git.sesse.net Git - ffmpeg/blob - configure

   1 #!/bin/sh
   2 #
   3 # FFmpeg configure script
   4 #
   5 # Copyright (c) 2000-2002 Fabrice Bellard
   6 # Copyright (c) 2005-2008 Diego Biurrun
   7 # Copyright (c) 2005-2008 Mans Rullgard
   8 #
   9
  10 # Prevent locale nonsense from breaking basic text processing.
  11 LC_ALL=C
  12 export LC_ALL
  13
  14 # make sure we are running under a compatible shell
  15 # try to make this part work with most shells
  16
  17 try_exec(){
  18     echo "Trying shell $1"
  19     type "$1" > /dev/null 2>&1 && exec "$@"
  20 }
  21
  22 unset foo
  23 (: ${foo%%bar}) 2> /dev/null
  24 E1="$?"
  25
  26 (: ${foo?}) 2> /dev/null
  27 E2="$?"
  28
  29 if test "$E1" != 0 || test "$E2" = 0; then
  30     echo "Broken shell detected.  Trying alternatives."
  31     export FF_CONF_EXEC
  32     if test "0$FF_CONF_EXEC" -lt 1; then
  33         FF_CONF_EXEC=1
  34         try_exec bash "$0" "$@"
  35     fi
  36     if test "0$FF_CONF_EXEC" -lt 2; then
  37         FF_CONF_EXEC=2
  38         try_exec ksh "$0" "$@"
  39     fi
  40     if test "0$FF_CONF_EXEC" -lt 3; then
  41         FF_CONF_EXEC=3
  42         try_exec /usr/xpg4/bin/sh "$0" "$@"
  43     fi
  44     echo "No compatible shell script interpreter found."
  45     echo "This configure script requires a POSIX-compatible shell"
  46     echo "such as bash or ksh."
  47     echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
  48     echo "Instead, install a working POSIX-compatible shell."
  49     echo "Disabling this configure test will create a broken FFmpeg."
  50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
  51         echo "This bash version ($BASH_VERSION) is broken on your platform."
  52         echo "Upgrade to a later version if available."
  53     fi
  54     exit 1
  55 fi
  56
  57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
  58
  59 show_help(){
  60     cat <<EOF
  61 Usage: configure [options]
  62 Options: [defaults in brackets after descriptions]
  63
  64 Help options:
  65   --help                   print this message
  66   --list-decoders          show all available decoders
  67   --list-encoders          show all available encoders
  68   --list-hwaccels          show all available hardware accelerators
  69   --list-demuxers          show all available demuxers
  70   --list-muxers            show all available muxers
  71   --list-parsers           show all available parsers
  72   --list-protocols         show all available protocols
  73   --list-bsfs              show all available bitstream filters
  74   --list-indevs            show all available input devices
  75   --list-outdevs           show all available output devices
  76   --list-filters           show all available filters
  77
  78 Standard options:
  79   --logfile=FILE           log tests and output to FILE [config.log]
  80   --disable-logging        do not log configure debug information
  81   --fatal-warnings         fail if any configure warning is generated
  82   --prefix=PREFIX          install in PREFIX [$prefix]
  83   --bindir=DIR             install binaries in DIR [PREFIX/bin]
  84   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
  85   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
  86   --libdir=DIR             install libs in DIR [PREFIX/lib]
  87   --shlibdir=DIR           install shared libs in DIR [LIBDIR]
  88   --incdir=DIR             install includes in DIR [PREFIX/include]
  89   --mandir=DIR             install man page in DIR [PREFIX/share/man]
  90   --pkgconfigdir=DIR       install pkg-config files in DIR [LIBDIR/pkgconfig]
  91   --enable-rpath           use rpath to allow installing libraries in paths
  92                            not part of the dynamic linker search path
  93                            use rpath when linking programs [USE WITH CARE]
  94   --install-name-dir=DIR   Darwin directory name for installed targets
  95
  96 Licensing options:
  97   --enable-gpl             allow use of GPL code, the resulting libs
  98                            and binaries will be under GPL [no]
  99   --enable-version3        upgrade (L)GPL to version 3 [no]
 100   --enable-nonfree         allow use of nonfree code, the resulting libs
 101                            and binaries will be unredistributable [no]
 102
 103 Configuration options:
 104   --disable-static         do not build static libraries [no]
 105   --enable-shared          build shared libraries [no]
 106   --enable-small           optimize for size instead of speed
 107   --disable-runtime-cpudetect disable detecting cpu capabilities at runtime (smaller binary)
 108   --enable-gray            enable full grayscale support (slower color)
 109   --disable-swscale-alpha  disable alpha channel support in swscale
 110   --disable-all            disable building components, libraries and programs
 111   --enable-raise-major     increase major version numbers in sonames [no]
 112
 113 Program options:
 114   --disable-programs       do not build command line programs
 115   --disable-ffmpeg         disable ffmpeg build
 116   --disable-ffplay         disable ffplay build
 117   --disable-ffprobe        disable ffprobe build
 118   --disable-ffserver       disable ffserver build
 119
 120 Documentation options:
 121   --disable-doc            do not build documentation
 122   --disable-htmlpages      do not build HTML documentation pages
 123   --disable-manpages       do not build man documentation pages
 124   --disable-podpages       do not build POD documentation pages
 125   --disable-txtpages       do not build text documentation pages
 126
 127 Component options:
 128   --disable-avdevice       disable libavdevice build
 129   --disable-avcodec        disable libavcodec build
 130   --disable-avformat       disable libavformat build
 131   --disable-swresample     disable libswresample build
 132   --disable-swscale        disable libswscale build
 133   --disable-postproc       disable libpostproc build
 134   --disable-avfilter       disable libavfilter build
 135   --enable-avresample      enable libavresample build [no]
 136   --disable-pthreads       disable pthreads [autodetect]
 137   --disable-w32threads     disable Win32 threads [autodetect]
 138   --disable-os2threads     disable OS/2 threads [autodetect]
 139   --disable-network        disable network support [no]
 140   --disable-dct            disable DCT code
 141   --disable-dwt            disable DWT code
 142   --disable-error-resilience disable error resilience code
 143   --disable-lsp            disable LSP code
 144   --disable-lzo            disable LZO decoder code
 145   --disable-mdct           disable MDCT code
 146   --disable-rdft           disable RDFT code
 147   --disable-fft            disable FFT code
 148   --disable-faan           disable floating point AAN (I)DCT code
 149   --disable-pixelutils     disable pixel utils in libavutil
 150
 151 Individual component options:
 152   --disable-everything     disable all components listed below
 153   --disable-encoder=NAME   disable encoder NAME
 154   --enable-encoder=NAME    enable encoder NAME
 155   --disable-encoders       disable all encoders
 156   --disable-decoder=NAME   disable decoder NAME
 157   --enable-decoder=NAME    enable decoder NAME
 158   --disable-decoders       disable all decoders
 159   --disable-hwaccel=NAME   disable hwaccel NAME
 160   --enable-hwaccel=NAME    enable hwaccel NAME
 161   --disable-hwaccels       disable all hwaccels
 162   --disable-muxer=NAME     disable muxer NAME
 163   --enable-muxer=NAME      enable muxer NAME
 164   --disable-muxers         disable all muxers
 165   --disable-demuxer=NAME   disable demuxer NAME
 166   --enable-demuxer=NAME    enable demuxer NAME
 167   --disable-demuxers       disable all demuxers
 168   --enable-parser=NAME     enable parser NAME
 169   --disable-parser=NAME    disable parser NAME
 170   --disable-parsers        disable all parsers
 171   --enable-bsf=NAME        enable bitstream filter NAME
 172   --disable-bsf=NAME       disable bitstream filter NAME
 173   --disable-bsfs           disable all bitstream filters
 174   --enable-protocol=NAME   enable protocol NAME
 175   --disable-protocol=NAME  disable protocol NAME
 176   --disable-protocols      disable all protocols
 177   --enable-indev=NAME      enable input device NAME
 178   --disable-indev=NAME     disable input device NAME
 179   --disable-indevs         disable input devices
 180   --enable-outdev=NAME     enable output device NAME
 181   --disable-outdev=NAME    disable output device NAME
 182   --disable-outdevs        disable output devices
 183   --disable-devices        disable all devices
 184   --enable-filter=NAME     enable filter NAME
 185   --disable-filter=NAME    disable filter NAME
 186   --disable-filters        disable all filters
 187
 188 External library support:
 189
 190   Using any of the following switches will allow FFmpeg to link to the
 191   corresponding external library. All the components depending on that library
 192   will become enabled, if all their other dependencies are met and they are not
 193   explicitly disabled. E.g. --enable-libwavpack will enable linking to
 194   libwavpack and allow the libwavpack encoder to be built, unless it is
 195   specifically disabled with --disable-encoder=libwavpack.
 196
 197   Note that only the system libraries are auto-detected. All the other external
 198   libraries must be explicitly enabled.
 199
 200   Also note that the following help text describes the purpose of the libraries
 201   themselves, not all their features will necessarily be usable by FFmpeg.
 202
 203   --enable-avisynth        enable reading of AviSynth script files [no]
 204   --disable-bzlib          disable bzlib [autodetect]
 205   --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
 206   --enable-frei0r          enable frei0r video filtering [no]
 207   --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
 208                            if openssl, librtmp or gmp is not used [no]
 209   --enable-gmp             enable gmp, needed for rtmp(t)e support
 210                            if openssl or librtmp is not used [no]
 211   --enable-gnutls          enable gnutls, needed for https support
 212                            if openssl is not used [no]
 213   --disable-iconv          disable iconv [autodetect]
 214   --enable-jni             enable JNI support [no]
 215   --enable-ladspa          enable LADSPA audio filtering [no]
 216   --enable-libass          enable libass subtitles rendering,
 217                            needed for subtitles and ass filter [no]
 218   --enable-libbluray       enable BluRay reading using libbluray [no]
 219   --enable-libbs2b         enable bs2b DSP library [no]
 220   --enable-libcaca         enable textual display using libcaca [no]
 221   --enable-libcelt         enable CELT decoding via libcelt [no]
 222   --enable-libcdio         enable audio CD grabbing with libcdio [no]
 223   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 224                            and libraw1394 [no]
 225   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 226   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 227   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
 228   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
 229   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
 230   --enable-libgme          enable Game Music Emu via libgme [no]
 231   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 232   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 233   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 234   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
 235   --enable-libmodplug      enable ModPlug via libmodplug [no]
 236   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 237   --enable-libnut          enable NUT (de)muxing via libnut,
 238                            native (de)muxer exists [no]
 239   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 240   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 241   --enable-libopencv       enable video filtering via libopencv [no]
 242   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 243   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 244   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
 245   --enable-libopus         enable Opus de/encoding via libopus [no]
 246   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 247   --enable-librubberband   enable rubberband needed for rubberband filter [no]
 248   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 249   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
 250   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 251   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 252   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
 253   --enable-libsoxr         enable Include libsoxr resampling [no]
 254   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 255   --enable-libssh          enable SFTP protocol via libssh [no]
 256   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
 257   --enable-libtheora       enable Theora encoding via libtheora [no]
 258   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 259   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 260   --enable-libvidstab      enable video stabilization using vid.stab [no]
 261   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 262   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 263                            native implementation exists [no]
 264   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 265   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 266   --enable-libwebp         enable WebP encoding via libwebp [no]
 267   --enable-libx264         enable H.264 encoding via x264 [no]
 268   --enable-libx265         enable HEVC encoding via x265 [no]
 269   --enable-libxavs         enable AVS encoding via xavs [no]
 270   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
 271   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
 272   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
 273   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
 274   --enable-libxvid         enable Xvid encoding via xvidcore,
 275                            native MPEG-4/Xvid encoder exists [no]
 276   --enable-libzimg         enable z.lib, needed for zscale filter [no]
 277   --enable-libzmq          enable message passing via libzmq [no]
 278   --enable-libzvbi         enable teletext support via libzvbi [no]
 279   --disable-lzma           disable lzma [autodetect]
 280   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
 281   --enable-mediacodec      enable Android MediaCodec support [no]
 282   --enable-netcdf          enable NetCDF, needed for sofalizer filter [no]
 283   --enable-openal          enable OpenAL 1.1 capture support [no]
 284   --enable-opencl          enable OpenCL code
 285   --enable-opengl          enable OpenGL rendering [no]
 286   --enable-openssl         enable openssl, needed for https support
 287                            if gnutls is not used [no]
 288   --disable-schannel       disable SChannel SSP, needed for TLS support on
 289                            Windows if openssl and gnutls are not used [autodetect]
 290   --disable-sdl2           disable sdl2 [autodetect]
 291   --disable-securetransport disable Secure Transport, needed for TLS support
 292                            on OSX if openssl and gnutls are not used [autodetect]
 293   --enable-x11grab         enable X11 grabbing (legacy) [no]
 294   --disable-xlib           disable xlib [autodetect]
 295   --disable-zlib           disable zlib [autodetect]
 296
 297   The following libraries provide various hardware acceleration features:
 298   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
 299   --disable-cuda           disable dynamically linked Nvidia CUDA code [autodetect]
 300   --disable-cuvid          disable Nvidia CUVID support [autodetect]
 301   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
 302   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
 303   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
 304   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
 305   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
 306   --disable-nvenc          disable Nvidia video encoding code [autodetect]
 307   --enable-omx             enable OpenMAX IL code [no]
 308   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
 309   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
 310   --disable-vda            disable Apple Video Decode Acceleration code [autodetect]
 311   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
 312   --disable-videotoolbox   disable VideoToolbox code [autodetect]
 313
 314 Toolchain options:
 315   --arch=ARCH              select architecture [$arch]
 316   --cpu=CPU                select the minimum required CPU (affects
 317                            instruction selection, may crash on older CPUs)
 318   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 319   --progs-suffix=SUFFIX    program name suffix []
 320   --enable-cross-compile   assume a cross-compiler is used
 321   --sysroot=PATH           root of cross-build tree
 322   --sysinclude=PATH        location of cross-build system headers
 323   --target-os=OS           compiler targets OS [$target_os]
 324   --target-exec=CMD        command to run executables on target
 325   --target-path=DIR        path to view of build directory on target
 326   --target-samples=DIR     path to samples directory on target
 327   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 328   --toolchain=NAME         set tool defaults according to NAME
 329   --nm=NM                  use nm tool NM [$nm_default]
 330   --ar=AR                  use archive tool AR [$ar_default]
 331   --as=AS                  use assembler AS [$as_default]
 332   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
 333   --strip=STRIP            use strip tool STRIP [$strip_default]
 334   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 335   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
 336   --cc=CC                  use C compiler CC [$cc_default]
 337   --cxx=CXX                use C compiler CXX [$cxx_default]
 338   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 339   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 340   --ld=LD                  use linker LD [$ld_default]
 341   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 342   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 343   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 344   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 345   --host-cc=HOSTCC         use host C compiler HOSTCC
 346   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 347   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 348   --host-ld=HOSTLD         use host linker HOSTLD
 349   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 350   --host-libs=HLIBS        use libs HLIBS when linking for host
 351   --host-os=OS             compiler host OS [$target_os]
 352   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 353   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 354   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 355   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 356   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 357   --extra-ldlibflags=ELDFLAGS add ELDFLAGS to LDLIBFLAGS [$LDLIBFLAGS]
 358   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 359   --extra-version=STRING   version string suffix []
 360   --optflags=OPTFLAGS      override optimization-related compiler flags
 361   --build-suffix=SUFFIX    library name suffix []
 362   --enable-pic             build position-independent code
 363   --enable-thumb           compile for Thumb instruction set
 364   --enable-lto             use link-time optimization
 365   --env="ENV=override"     override the environment variables
 366
 367 Advanced options (experts only):
 368   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 369   --custom-allocator=NAME  use a supported custom allocator
 370   --disable-symver         disable symbol versioning
 371   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 372   --disable-safe-bitstream-reader
 373                            disable buffer boundary checking in bitreaders
 374                            (faster, but may crash)
 375   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
 376   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 377
 378 Optimization options (experts only):
 379   --disable-asm            disable all assembly optimizations
 380   --disable-altivec        disable AltiVec optimizations
 381   --disable-vsx            disable VSX optimizations
 382   --disable-power8         disable POWER8 optimizations
 383   --disable-amd3dnow       disable 3DNow! optimizations
 384   --disable-amd3dnowext    disable 3DNow! extended optimizations
 385   --disable-mmx            disable MMX optimizations
 386   --disable-mmxext         disable MMXEXT optimizations
 387   --disable-sse            disable SSE optimizations
 388   --disable-sse2           disable SSE2 optimizations
 389   --disable-sse3           disable SSE3 optimizations
 390   --disable-ssse3          disable SSSE3 optimizations
 391   --disable-sse4           disable SSE4 optimizations
 392   --disable-sse42          disable SSE4.2 optimizations
 393   --disable-avx            disable AVX optimizations
 394   --disable-xop            disable XOP optimizations
 395   --disable-fma3           disable FMA3 optimizations
 396   --disable-fma4           disable FMA4 optimizations
 397   --disable-avx2           disable AVX2 optimizations
 398   --disable-aesni          disable AESNI optimizations
 399   --disable-armv5te        disable armv5te optimizations
 400   --disable-armv6          disable armv6 optimizations
 401   --disable-armv6t2        disable armv6t2 optimizations
 402   --disable-vfp            disable VFP optimizations
 403   --disable-neon           disable NEON optimizations
 404   --disable-inline-asm     disable use of inline assembly
 405   --disable-yasm           disable use of nasm/yasm assembly
 406   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
 407   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 408   --disable-msa            disable MSA optimizations
 409   --disable-mipsfpu        disable floating point MIPS optimizations
 410   --disable-mmi            disable Loongson SIMD optimizations
 411   --disable-fast-unaligned consider unaligned accesses slow
 412
 413 Developer options (useful when working on FFmpeg itself):
 414   --disable-debug          disable debugging symbols
 415   --enable-debug=LEVEL     set the debug level [$debuglevel]
 416   --disable-optimizations  disable compiler optimizations
 417   --enable-extra-warnings  enable more compiler warnings
 418   --disable-stripping      disable stripping of executables and shared libraries
 419   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 420                            2 causes a slowdown at runtime.
 421   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 422   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 423                            leaks and errors, using the specified valgrind binary.
 424                            Cannot be combined with --target-exec
 425   --enable-ftrapv          Trap arithmetic overflows
 426   --samples=PATH           location of test samples for FATE, if not set use
 427                            \$FATE_SAMPLES at make invocation time.
 428   --enable-neon-clobber-test check NEON registers for clobbering (should be
 429                            used only for debugging purposes)
 430   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 431                            should be used only for debugging purposes)
 432   --enable-random          randomly enable/disable components
 433   --disable-random
 434   --enable-random=LIST     randomly enable/disable specific components or
 435   --disable-random=LIST    component groups. LIST is a comma-separated list
 436                            of NAME[:PROB] entries where NAME is a component
 437                            (group) and PROB the probability associated with
 438                            NAME (default 0.5).
 439   --random-seed=VALUE      seed value for --enable/disable-random
 440   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 441                            (only applies to --disable-optimizations builds)
 442
 443 NOTE: Object files are built at the place where configure is launched.
 444 EOF
 445   exit 0
 446 }
 447
 448 quotes='""'
 449 if test -t 1 && which tput >/dev/null 2>&1; then
 450     ncolors=$(tput colors)
 451     if test -n "$ncolors" && test $ncolors -ge 8; then
 452         bold_color=$(tput bold)
 453         warn_color=$(tput setaf 3)
 454         error_color=$(tput setaf 1)
 455         reset_color=$(tput sgr0)
 456     fi
 457     # 72 used instead of 80 since that's the default of pr
 458     ncols=$(tput cols)
 459 fi
 460 : ${ncols:=72}
 461
 462 log(){
 463     echo "$@" >> $logfile
 464 }
 465
 466 log_file(){
 467     log BEGIN $1
 468     pr -n -t $1 >> $logfile
 469     log END $1
 470 }
 471
 472 warn(){
 473     log "WARNING: $*"
 474     WARNINGS="${WARNINGS}WARNING: $*\n"
 475 }
 476
 477 die(){
 478     log "$@"
 479     echo "$error_color$bold_color$@$reset_color"
 480     cat <<EOF
 481
 482 If you think configure made a mistake, make sure you are using the latest
 483 version from Git.  If the latest version fails, report the problem to the
 484 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 485 EOF
 486     if disabled logging; then
 487         cat <<EOF
 488 Rerun configure with logging enabled (do not use --disable-logging), and
 489 include the log this produces with your report.
 490 EOF
 491     else
 492         cat <<EOF
 493 Include the log file "$logfile" produced by configure as this will help
 494 solve the problem.
 495 EOF
 496     fi
 497     exit 1
 498 }
 499
 500 # Avoid locale weirdness, besides we really just want to translate ASCII.
 501 toupper(){
 502     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 503 }
 504
 505 tolower(){
 506     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 507 }
 508
 509 c_escape(){
 510     echo "$*" | sed 's/["\\]/\\\0/g'
 511 }
 512
 513 sh_quote(){
 514     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 515     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 516     echo "$v"
 517 }
 518
 519 cleanws(){
 520     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 521 }
 522
 523 filter(){
 524     pat=$1
 525     shift
 526     for v; do
 527         eval "case $v in $pat) echo $v ;; esac"
 528     done
 529 }
 530
 531 filter_out(){
 532     pat=$1
 533     shift
 534     for v; do
 535         eval "case $v in $pat) ;; *) echo $v ;; esac"
 536     done
 537 }
 538
 539 map(){
 540     m=$1
 541     shift
 542     for v; do eval $m; done
 543 }
 544
 545 add_suffix(){
 546     suffix=$1
 547     shift
 548     for v; do echo ${v}${suffix}; done
 549 }
 550
 551 set_all(){
 552     value=$1
 553     shift
 554     for var in $*; do
 555         eval $var=$value
 556     done
 557 }
 558
 559 set_weak(){
 560     value=$1
 561     shift
 562     for var; do
 563         eval : \${$var:=$value}
 564     done
 565 }
 566
 567 sanitize_var_name(){
 568     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 569 }
 570
 571 set_safe(){
 572     var=$1
 573     shift
 574     eval $(sanitize_var_name "$var")='$*'
 575 }
 576
 577 get_safe(){
 578     eval echo \$$(sanitize_var_name "$1")
 579 }
 580
 581 pushvar(){
 582     for pvar in $*; do
 583         eval level=\${${pvar}_level:=0}
 584         eval ${pvar}_${level}="\$$pvar"
 585         eval ${pvar}_level=$(($level+1))
 586     done
 587 }
 588
 589 popvar(){
 590     for pvar in $*; do
 591         eval level=\${${pvar}_level:-0}
 592         test $level = 0 && continue
 593         eval level=$(($level-1))
 594         eval $pvar="\${${pvar}_${level}}"
 595         eval ${pvar}_level=$level
 596         eval unset ${pvar}_${level}
 597     done
 598 }
 599
 600 request(){
 601     for var in $*; do
 602         eval ${var}_requested=yes
 603         eval $var=
 604     done
 605 }
 606
 607 enable(){
 608     set_all yes $*
 609 }
 610
 611 disable(){
 612     set_all no $*
 613 }
 614
 615 enable_weak(){
 616     set_weak yes $*
 617 }
 618
 619 disable_weak(){
 620     set_weak no $*
 621 }
 622
 623 enable_safe(){
 624     for var; do
 625         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 626     done
 627 }
 628
 629 disable_safe(){
 630     for var; do
 631         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 632     done
 633 }
 634
 635 do_enable_deep(){
 636     for var; do
 637         enabled $var && continue
 638         eval sel="\$${var}_select"
 639         eval sgs="\$${var}_suggest"
 640         pushvar var sgs
 641         enable_deep $sel
 642         popvar sgs
 643         enable_deep_weak $sgs
 644         popvar var
 645     done
 646 }
 647
 648 enable_deep(){
 649     do_enable_deep $*
 650     enable $*
 651 }
 652
 653 enable_deep_weak(){
 654     for var; do
 655         disabled $var && continue
 656         pushvar var
 657         do_enable_deep $var
 658         popvar var
 659         enable_weak $var
 660     done
 661 }
 662
 663 requested(){
 664     test "${1#!}" = "$1" && op='=' || op=!=
 665     eval test "x\$${1#!}_requested" $op "xyes"
 666 }
 667
 668 enabled(){
 669     test "${1#!}" = "$1" && op='=' || op=!=
 670     eval test "x\$${1#!}" $op "xyes"
 671 }
 672
 673 disabled(){
 674     test "${1#!}" = "$1" && op='=' || op=!=
 675     eval test "x\$${1#!}" $op "xno"
 676 }
 677
 678 enabled_all(){
 679     for opt; do
 680         enabled $opt || return 1
 681     done
 682 }
 683
 684 disabled_all(){
 685     for opt; do
 686         disabled $opt || return 1
 687     done
 688 }
 689
 690 enabled_any(){
 691     for opt; do
 692         enabled $opt && return 0
 693     done
 694 }
 695
 696 disabled_any(){
 697     for opt; do
 698         disabled $opt && return 0
 699     done
 700     return 1
 701 }
 702
 703 set_default(){
 704     for opt; do
 705         eval : \${$opt:=\$${opt}_default}
 706     done
 707 }
 708
 709 is_in(){
 710     value=$1
 711     shift
 712     for var in $*; do
 713         [ $var = $value ] && return 0
 714     done
 715     return 1
 716 }
 717
 718 do_check_deps(){
 719     for cfg; do
 720         cfg="${cfg#!}"
 721         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 722         disabled ${cfg}_checking && continue
 723         enable ${cfg}_checking
 724         append allopts $cfg
 725
 726         eval dep_all="\$${cfg}_deps"
 727         eval dep_any="\$${cfg}_deps_any"
 728         eval dep_sel="\$${cfg}_select"
 729         eval dep_sgs="\$${cfg}_suggest"
 730         eval dep_ifa="\$${cfg}_if"
 731         eval dep_ifn="\$${cfg}_if_any"
 732
 733         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 734         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
 735         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 736
 737         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 738         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 739         enabled_all  $dep_all || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not all dependencies are satisfied: $dep_all"; }
 740         enabled_any  $dep_any || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not any dependency is satisfied: $dep_any"; }
 741         disabled_any $dep_sel && { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some selected dependency is unsatisfied: $dep_sel"; }
 742
 743         if enabled $cfg; then
 744             enable_deep $dep_sel
 745             enable_deep_weak $dep_sgs
 746         fi
 747
 748         disable ${cfg}_checking
 749     done
 750 }
 751
 752 check_deps(){
 753     unset allopts
 754
 755     do_check_deps "$@"
 756
 757     for cfg in $allopts; do
 758         enabled $cfg || continue
 759         eval dep_extralibs="\$${cfg}_extralibs"
 760         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
 761     done
 762 }
 763
 764 print_config(){
 765     pfx=$1
 766     files=$2
 767     shift 2
 768     map 'eval echo "$v \${$v:-no}"' "$@" |
 769     awk "BEGIN { split(\"$files\", files) }
 770         {
 771             c = \"$pfx\" toupper(\$1);
 772             v = \$2;
 773             sub(/yes/, 1, v);
 774             sub(/no/,  0, v);
 775             for (f in files) {
 776                 file = files[f];
 777                 if (file ~ /\\.h\$/) {
 778                     printf(\"#define %s %d\\n\", c, v) >>file;
 779                 } else if (file ~ /\\.asm\$/) {
 780                     printf(\"%%define %s %d\\n\", c, v) >>file;
 781                 } else if (file ~ /\\.mak\$/) {
 782                     n = -v ? \"\" : \"!\";
 783                     printf(\"%s%s=yes\\n\", n, c) >>file;
 784                 } else if (file ~ /\\.texi\$/) {
 785                     pre = -v ? \"\" : \"@c \";
 786                     yesno = \$2;
 787                     c2 = tolower(c);
 788                     gsub(/_/, \"-\", c2);
 789                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 790                 }
 791             }
 792         }"
 793 }
 794
 795 print_enabled(){
 796     suf=$1
 797     shift
 798     for v; do
 799         enabled $v && printf "%s\n" ${v%$suf}
 800     done
 801 }
 802
 803 append(){
 804     var=$1
 805     shift
 806     eval "$var=\"\$$var $*\""
 807 }
 808
 809 prepend(){
 810     var=$1
 811     shift
 812     eval "$var=\"$* \$$var\""
 813 }
 814
 815 unique(){
 816     var=$1
 817     uniq_list=""
 818     for tok in $(eval echo \$$var); do
 819         uniq_list="$(filter_out $tok $uniq_list) $tok"
 820     done
 821     eval "$var=\"${uniq_list}\""
 822 }
 823
 824 add_cppflags(){
 825     append CPPFLAGS "$@"
 826 }
 827
 828 add_cflags(){
 829     append CFLAGS $($cflags_filter "$@")
 830 }
 831
 832 add_cxxflags(){
 833     append CXXFLAGS $($cflags_filter "$@")
 834 }
 835
 836 add_asflags(){
 837     append ASFLAGS $($asflags_filter "$@")
 838 }
 839
 840 add_objcflags(){
 841     append OBJCFLAGS $($objcflags_filter "$@")
 842 }
 843
 844 add_ldflags(){
 845     append LDFLAGS $($ldflags_filter "$@")
 846 }
 847
 848 add_ldexeflags(){
 849     append LDEXEFLAGS $($ldflags_filter "$@")
 850 }
 851
 852 add_ldlibflags(){
 853     append LDLIBFLAGS $($ldflags_filter "$@")
 854 }
 855
 856 add_stripflags(){
 857     append ASMSTRIPFLAGS "$@"
 858 }
 859
 860 add_extralibs(){
 861     prepend extralibs $($ldflags_filter "$@")
 862 }
 863
 864 add_host_cppflags(){
 865     append host_cppflags "$@"
 866 }
 867
 868 add_host_cflags(){
 869     append host_cflags $($host_cflags_filter "$@")
 870 }
 871
 872 add_host_ldflags(){
 873     append host_ldflags $($host_ldflags_filter "$@")
 874 }
 875
 876 add_compat(){
 877     append compat_objs $1
 878     shift
 879     map 'add_cppflags -D$v' "$@"
 880 }
 881
 882 check_cmd(){
 883     log "$@"
 884     "$@" >> $logfile 2>&1
 885 }
 886
 887 check_stat(){
 888     log check_stat "$@"
 889     stat "$1" >> $logfile 2>&1
 890 }
 891
 892 cc_o(){
 893     eval printf '%s\\n' $CC_O
 894 }
 895
 896 cc_e(){
 897     eval printf '%s\\n' $CC_E
 898 }
 899
 900 check_cc(){
 901     log check_cc "$@"
 902     cat > $TMPC
 903     log_file $TMPC
 904     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 905 }
 906
 907 check_cxx(){
 908     log check_cxx "$@"
 909     cat > $TMPCPP
 910     log_file $TMPCPP
 911     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 912 }
 913
 914 check_objcc(){
 915     log check_objcc "$@"
 916     cat > $TMPM
 917     log_file $TMPM
 918     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
 919 }
 920
 921 check_cpp(){
 922     log check_cpp "$@"
 923     cat > $TMPC
 924     log_file $TMPC
 925     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 926 }
 927
 928 as_o(){
 929     eval printf '%s\\n' $AS_O
 930 }
 931
 932 check_as(){
 933     log check_as "$@"
 934     cat > $TMPS
 935     log_file $TMPS
 936     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 937 }
 938
 939 check_inline_asm(){
 940     log check_inline_asm "$@"
 941     name="$1"
 942     code="$2"
 943     shift 2
 944     disable $name
 945     check_cc "$@" <<EOF && enable $name
 946 void foo(void){ __asm__ volatile($code); }
 947 EOF
 948 }
 949
 950 check_inline_asm_flags(){
 951     log check_inline_asm_flags "$@"
 952     name="$1"
 953     code="$2"
 954     flags=''
 955     shift 2
 956     while [ "$1" != "" ]; do
 957       append flags $1
 958       shift
 959     done;
 960     disable $name
 961     cat > $TMPC <<EOF
 962 void foo(void){ __asm__ volatile($code); }
 963 EOF
 964     log_file $TMPC
 965     check_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
 966     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
 967 }
 968
 969 check_insn(){
 970     log check_insn "$@"
 971     check_inline_asm ${1}_inline "\"$2\""
 972     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 973 }
 974
 975 check_yasm(){
 976     log check_yasm "$@"
 977     echo "$1" > $TMPS
 978     log_file $TMPS
 979     shift 1
 980     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
 981 }
 982
 983 ld_o(){
 984     eval printf '%s\\n' $LD_O
 985 }
 986
 987 check_ld(){
 988     log check_ld "$@"
 989     type=$1
 990     shift 1
 991     flags=$(filter_out '-l*|*.so' $@)
 992     libs=$(filter '-l*|*.so' $@)
 993     check_$type $($cflags_filter $flags) || return
 994     flags=$($ldflags_filter $flags)
 995     libs=$($ldflags_filter $libs)
 996     check_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
 997 }
 998
 999 print_include(){
1000     hdr=$1
1001     test "${hdr%.h}" = "${hdr}" &&
1002         echo "#include $hdr"    ||
1003         echo "#include <$hdr>"
1004 }
1005
1006 check_code(){
1007     log check_code "$@"
1008     check=$1
1009     headers=$2
1010     code=$3
1011     shift 3
1012     {
1013         for hdr in $headers; do
1014             print_include $hdr
1015         done
1016         echo "int main(void) { $code; return 0; }"
1017     } | check_$check "$@"
1018 }
1019
1020 check_cppflags(){
1021     log check_cppflags "$@"
1022     check_cc "$@" <<EOF && append CPPFLAGS "$@"
1023 int x;
1024 EOF
1025 }
1026
1027 test_cflags(){
1028     log test_cflags "$@"
1029     set -- $($cflags_filter "$@")
1030     check_cc "$@" <<EOF
1031 int x;
1032 EOF
1033 }
1034
1035 check_cflags(){
1036     log check_cflags "$@"
1037     test_cflags "$@" && add_cflags "$@"
1038 }
1039
1040 check_cxxflags(){
1041     log check_cxxflags "$@"
1042     set -- $($cflags_filter "$@")
1043     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
1044 int x;
1045 EOF
1046 }
1047
1048 test_objcflags(){
1049     log test_cflags "$@"
1050     set -- $($cflags_filter "$@")
1051     check_objcc "$@" <<EOF
1052 int x;
1053 EOF
1054 }
1055
1056 check_objcflags(){
1057     log check_cflags "$@"
1058     test_objcflags "$@" && add_objcflags "$@"
1059 }
1060
1061 test_ldflags(){
1062     log test_ldflags "$@"
1063     check_ld "cc" "$@" <<EOF
1064 int main(void){ return 0; }
1065 EOF
1066 }
1067
1068 check_ldflags(){
1069     log check_ldflags "$@"
1070     test_ldflags "$@" && add_ldflags "$@"
1071 }
1072
1073 test_stripflags(){
1074     log test_stripflags "$@"
1075     # call check_cc to get a fresh TMPO
1076     check_cc <<EOF
1077 int main(void) { return 0; }
1078 EOF
1079     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1080 }
1081
1082 check_stripflags(){
1083     log check_stripflags "$@"
1084     test_stripflags "$@" && add_stripflags "$@"
1085 }
1086
1087 check_header(){
1088     log check_header "$@"
1089     header=$1
1090     shift
1091     disable_safe $header
1092     check_cpp "$@" <<EOF && enable_safe $header
1093 #include <$header>
1094 int x;
1095 EOF
1096 }
1097
1098 check_header_objcc(){
1099     log check_header_objcc "$@"
1100     rm -f -- "$TMPO"
1101     header=$1
1102     shift
1103     disable_safe $header
1104     {
1105        echo "#include <$header>"
1106        echo "int main(void) { return 0; }"
1107     } | check_objcc && check_stat "$TMPO" && enable_safe $headers
1108 }
1109
1110 check_func(){
1111     log check_func "$@"
1112     func=$1
1113     shift
1114     disable $func
1115     check_ld "cc" "$@" <<EOF && enable $func
1116 extern int $func();
1117 int main(void){ $func(); }
1118 EOF
1119 }
1120
1121 check_complexfunc(){
1122     log check_complexfunc "$@"
1123     func=$1
1124     narg=$2
1125     shift 2
1126     test $narg = 2 && args="f, g" || args="f * I"
1127     disable $func
1128     check_ld "cc" "$@" <<EOF && enable $func
1129 #include <complex.h>
1130 #include <math.h>
1131 float foo(complex float f, complex float g) { return $func($args); }
1132 int main(void){ return (int) foo; }
1133 EOF
1134 }
1135
1136 check_mathfunc(){
1137     log check_mathfunc "$@"
1138     func=$1
1139     narg=$2
1140     shift 2
1141     test $narg = 2 && args="f, g" || args="f"
1142     disable $func
1143     check_ld "cc" "$@" <<EOF && enable $func
1144 #include <math.h>
1145 float foo(float f, float g) { return $func($args); }
1146 int main(void){ return (int) foo; }
1147 EOF
1148 }
1149
1150 check_func_headers(){
1151     log check_func_headers "$@"
1152     headers=$1
1153     funcs=$2
1154     shift 2
1155     {
1156         for hdr in $headers; do
1157             print_include $hdr
1158         done
1159         echo "#include <stdint.h>"
1160         for func in $funcs; do
1161             echo "long check_$func(void) { return (long) $func; }"
1162         done
1163         echo "int main(void) { int ret = 0;"
1164         # LTO could optimize out the test functions without this
1165         for func in $funcs; do
1166             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1167         done
1168         echo "return ret; }"
1169     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1170 }
1171
1172 check_class_headers_cpp(){
1173     log check_class_headers_cpp "$@"
1174     headers=$1
1175     classes=$2
1176     shift 2
1177     {
1178         for hdr in $headers; do
1179             echo "#include <$hdr>"
1180         done
1181         echo "int main(void) { "
1182         i=1
1183         for class in $classes; do
1184             echo "$class obj$i;"
1185             i=$(expr $i + 1)
1186         done
1187         echo "return 0; }"
1188     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1189 }
1190
1191 check_cpp_condition(){
1192     log check_cpp_condition "$@"
1193     header=$1
1194     condition=$2
1195     shift 2
1196     check_cpp "$@" <<EOF
1197 #include <$header>
1198 #if !($condition)
1199 #error "unsatisfied condition: $condition"
1200 #endif
1201 EOF
1202 }
1203
1204 test_cflags_cc(){
1205     log test_cflags_cc "$@"
1206     flags=$1
1207     header=$2
1208     condition=$3
1209     shift 3
1210     set -- $($cflags_filter "$flags")
1211     check_cc "$@" <<EOF
1212 #include <$header>
1213 #if !($condition)
1214 #error "unsatisfied condition: $condition"
1215 #endif
1216 EOF
1217 }
1218
1219 check_lib(){
1220     log check_lib "$@"
1221     header="$1"
1222     func="$2"
1223     shift 2
1224     check_header $header && check_func $func "$@" && add_extralibs "$@"
1225 }
1226
1227 check_lib2(){
1228     log check_lib2 "$@"
1229     headers="$1"
1230     funcs="$2"
1231     shift 2
1232     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1233 }
1234
1235 check_lib_cpp(){
1236     log check_lib_cpp "$@"
1237     headers="$1"
1238     classes="$2"
1239     shift 2
1240     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1241 }
1242
1243 check_pkg_config(){
1244     log check_pkg_config "$@"
1245     pkgandversion="$1"
1246     pkg="${1%% *}"
1247     headers="$2"
1248     funcs="$3"
1249     shift 3
1250     check_cmd $pkg_config --exists --print-errors $pkgandversion || return
1251     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1252     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1253     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1254         set_safe "${pkg}_cflags" $pkg_cflags   &&
1255         set_safe "${pkg}_libs"   $pkg_libs
1256 }
1257
1258 check_exec(){
1259     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1260 }
1261
1262 check_exec_crash(){
1263     code=$(cat)
1264
1265     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1266     # are safe but may not be available everywhere.  Thus we use
1267     # raise(SIGTERM) instead.  The check is run in a subshell so we
1268     # can redirect the "Terminated" message from the shell.  SIGBUS
1269     # is not defined by standard C so it is used conditionally.
1270
1271     (check_exec "$@") >> $logfile 2>&1 <<EOF
1272 #include <signal.h>
1273 static void sighandler(int sig){
1274     raise(SIGTERM);
1275 }
1276 int foo(void){
1277     $code
1278 }
1279 int (*func_ptr)(void) = foo;
1280 int main(void){
1281     signal(SIGILL, sighandler);
1282     signal(SIGFPE, sighandler);
1283     signal(SIGSEGV, sighandler);
1284 #ifdef SIGBUS
1285     signal(SIGBUS, sighandler);
1286 #endif
1287     return func_ptr();
1288 }
1289 EOF
1290 }
1291
1292 check_type(){
1293     log check_type "$@"
1294     headers=$1
1295     type=$2
1296     shift 2
1297     disable_safe "$type"
1298     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1299 }
1300
1301 check_struct(){
1302     log check_struct "$@"
1303     headers=$1
1304     struct=$2
1305     member=$3
1306     shift 3
1307     disable_safe "${struct}_${member}"
1308     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1309         enable_safe "${struct}_${member}"
1310 }
1311
1312 check_builtin(){
1313     log check_builtin "$@"
1314     name=$1
1315     headers=$2
1316     builtin=$3
1317     shift 3
1318     disable "$name"
1319     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1320 }
1321
1322 check_compile_assert(){
1323     log check_compile_assert "$@"
1324     name=$1
1325     headers=$2
1326     condition=$3
1327     shift 3
1328     disable "$name"
1329     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1330 }
1331
1332 require(){
1333     name="$1"
1334     header="$2"
1335     func="$3"
1336     shift 3
1337     check_lib $header $func "$@" || die "ERROR: $name not found"
1338 }
1339
1340 require2(){
1341     name="$1"
1342     headers="$2"
1343     func="$3"
1344     shift 3
1345     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1346 }
1347
1348 require_cpp(){
1349     name="$1"
1350     headers="$2"
1351     classes="$3"
1352     shift 3
1353     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1354 }
1355
1356 use_pkg_config(){
1357     pkg="$1"
1358     check_pkg_config "$@" || return 1
1359     add_cflags    $(get_safe "${pkg}_cflags")
1360     add_extralibs $(get_safe "${pkg}_libs")
1361 }
1362
1363 require_pkg_config(){
1364     use_pkg_config "$@" || die "ERROR: $pkg not found using pkg-config$pkg_config_fail_message"
1365 }
1366
1367 require_libfreetype(){
1368     log require_libfreetype "$@"
1369     pkg="freetype2"
1370     check_cmd $pkg_config --exists --print-errors $pkg \
1371       || die "ERROR: $pkg not found"
1372     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1373     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1374     {
1375         echo "#include <ft2build.h>"
1376         echo "#include FT_FREETYPE_H"
1377         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1378         echo "int main(void) { return 0; }"
1379     } | check_ld "cc" $pkg_cflags $pkg_libs \
1380       && set_safe "${pkg}_cflags" $pkg_cflags \
1381       && set_safe "${pkg}_libs"   $pkg_libs \
1382       || die "ERROR: $pkg not found"
1383     add_cflags    $(get_safe "${pkg}_cflags")
1384     add_extralibs $(get_safe "${pkg}_libs")
1385 }
1386
1387 hostcc_e(){
1388     eval printf '%s\\n' $HOSTCC_E
1389 }
1390
1391 hostcc_o(){
1392     eval printf '%s\\n' $HOSTCC_O
1393 }
1394
1395 check_host_cc(){
1396     log check_host_cc "$@"
1397     cat > $TMPC
1398     log_file $TMPC
1399     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1400 }
1401
1402 check_host_cpp(){
1403     log check_host_cpp "$@"
1404     cat > $TMPC
1405     log_file $TMPC
1406     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1407 }
1408
1409 check_host_cppflags(){
1410     log check_host_cppflags "$@"
1411     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1412 int x;
1413 EOF
1414 }
1415
1416 check_host_cflags(){
1417     log check_host_cflags "$@"
1418     set -- $($host_cflags_filter "$@")
1419     check_host_cc "$@" <<EOF && append host_cflags "$@"
1420 int x;
1421 EOF
1422 }
1423
1424 check_host_cpp_condition(){
1425     log check_host_cpp_condition "$@"
1426     header=$1
1427     condition=$2
1428     shift 2
1429     check_host_cpp "$@" <<EOF
1430 #include <$header>
1431 #if !($condition)
1432 #error "unsatisfied condition: $condition"
1433 #endif
1434 EOF
1435 }
1436
1437 cp_if_changed(){
1438     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1439     mkdir -p "$(dirname $2)"
1440     $cp_f "$1" "$2"
1441 }
1442
1443 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1444 # system-dependent things.
1445
1446 AVCODEC_COMPONENTS="
1447     bsfs
1448     decoders
1449     encoders
1450     hwaccels
1451     parsers
1452 "
1453
1454 AVDEVICE_COMPONENTS="
1455     indevs
1456     outdevs
1457 "
1458 AVFILTER_COMPONENTS="
1459     filters
1460 "
1461 AVFORMAT_COMPONENTS="
1462     demuxers
1463     muxers
1464     protocols
1465 "
1466
1467 AVRESAMPLE_COMPONENTS=""
1468 AVUTIL_COMPONENTS=""
1469
1470 COMPONENT_LIST="
1471     $AVCODEC_COMPONENTS
1472     $AVDEVICE_COMPONENTS
1473     $AVFILTER_COMPONENTS
1474     $AVFORMAT_COMPONENTS
1475     $AVRESAMPLE_COMPONENTS
1476     $AVUTIL_COMPONENTS
1477 "
1478
1479 EXAMPLE_LIST="
1480     avio_dir_cmd_example
1481     avio_reading_example
1482     decoding_encoding_example
1483     demuxing_decoding_example
1484     extract_mvs_example
1485     filter_audio_example
1486     filtering_audio_example
1487     filtering_video_example
1488     http_multiclient_example
1489     metadata_example
1490     muxing_example
1491     qsvdec_example
1492     remuxing_example
1493     resampling_audio_example
1494     scaling_video_example
1495     transcode_aac_example
1496     transcoding_example
1497 "
1498 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1499     bzlib
1500     iconv
1501     libxcb
1502     libxcb_shm
1503     libxcb_shape
1504     libxcb_xfixes
1505     lzma
1506     schannel
1507     sdl
1508     sdl2
1509     securetransport
1510     xlib
1511     zlib
1512 "
1513
1514 EXTERNAL_LIBRARY_LIST="
1515     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1516     avisynth
1517     chromaprint
1518     crystalhd
1519     decklink
1520     frei0r
1521     gcrypt
1522     gmp
1523     gnutls
1524     jni
1525     ladspa
1526     libass
1527     libbluray
1528     libbs2b
1529     libcaca
1530     libcdio
1531     libcelt
1532     libdc1394
1533     libfdk_aac
1534     libflite
1535     libfontconfig
1536     libfreetype
1537     libfribidi
1538     libgme
1539     libgsm
1540     libiec61883
1541     libilbc
1542     libkvazaar
1543     libmodplug
1544     libmp3lame
1545     libnut
1546     libopencore_amrnb
1547     libopencore_amrwb
1548     libopencv
1549     libopenh264
1550     libopenjpeg
1551     libopenmpt
1552     libopus
1553     libpulse
1554     librtmp
1555     librubberband
1556     libschroedinger
1557     libshine
1558     libsmbclient
1559     libsnappy
1560     libsoxr
1561     libspeex
1562     libssh
1563     libtesseract
1564     libtheora
1565     libtwolame
1566     libv4l2
1567     libvidstab
1568     libvo_amrwbenc
1569     libvorbis
1570     libvpx
1571     libwavpack
1572     libwebp
1573     libx264
1574     libx265
1575     libxavs
1576     libxvid
1577     libzimg
1578     libzmq
1579     libzvbi
1580     mediacodec
1581     netcdf
1582     openal
1583     opencl
1584     opengl
1585     openssl
1586     videotoolbox
1587     x11grab
1588 "
1589 HWACCEL_AUTODETECT_LIBRARY_LIST="
1590     audiotoolbox
1591     cuda
1592     cuvid
1593     d3d11va
1594     dxva2
1595     nvenc
1596     vaapi
1597     vda
1598     vdpau
1599     videotoolbox_hwaccel
1600     xvmc
1601 "
1602
1603 HWACCEL_LIBRARY_LIST="
1604     $HWACCEL_AUTODETECT_LIBRARY_LIST
1605     libmfx
1606     libnpp
1607     mmal
1608     omx
1609 "
1610
1611 DOCUMENT_LIST="
1612     doc
1613     htmlpages
1614     manpages
1615     podpages
1616     txtpages
1617 "
1618
1619 FEATURE_LIST="
1620     ftrapv
1621     gray
1622     hardcoded_tables
1623     omx_rpi
1624     runtime_cpudetect
1625     safe_bitstream_reader
1626     shared
1627     small
1628     static
1629     swscale_alpha
1630 "
1631
1632 LIBRARY_LIST="
1633     avcodec
1634     avdevice
1635     avfilter
1636     avformat
1637     avresample
1638     avutil
1639     postproc
1640     swresample
1641     swscale
1642 "
1643
1644 LICENSE_LIST="
1645     gpl
1646     nonfree
1647     version3
1648 "
1649
1650 PROGRAM_LIST="
1651     ffplay
1652     ffprobe
1653     ffserver
1654     ffmpeg
1655 "
1656
1657 SUBSYSTEM_LIST="
1658     dct
1659     dwt
1660     error_resilience
1661     faan
1662     fast_unaligned
1663     fft
1664     lsp
1665     lzo
1666     mdct
1667     pixelutils
1668     network
1669     rdft
1670 "
1671
1672 CONFIG_LIST="
1673     $COMPONENT_LIST
1674     $DOCUMENT_LIST
1675     $EXAMPLE_LIST
1676     $EXTERNAL_LIBRARY_LIST
1677     $HWACCEL_LIBRARY_LIST
1678     $FEATURE_LIST
1679     $LICENSE_LIST
1680     $LIBRARY_LIST
1681     $PROGRAM_LIST
1682     $SUBSYSTEM_LIST
1683     fontconfig
1684     memalign_hack
1685     memory_poisoning
1686     neon_clobber_test
1687     pic
1688     pod2man
1689     raise_major
1690     thumb
1691     valgrind_backtrace
1692     xmm_clobber_test
1693 "
1694
1695 THREADS_LIST="
1696     pthreads
1697     os2threads
1698     w32threads
1699 "
1700
1701 ATOMICS_LIST="
1702     atomics_gcc
1703     atomics_suncc
1704     atomics_win32
1705 "
1706
1707 AUTODETECT_LIBS="
1708     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1709     $HWACCEL_AUTODETECT_LIBRARY_LIST
1710     $THREADS_LIST
1711 "
1712
1713 ARCH_LIST="
1714     aarch64
1715     alpha
1716     arm
1717     avr32
1718     avr32_ap
1719     avr32_uc
1720     bfin
1721     ia64
1722     m68k
1723     mips
1724     mips64
1725     parisc
1726     ppc
1727     ppc64
1728     s390
1729     sh4
1730     sparc
1731     sparc64
1732     tilegx
1733     tilepro
1734     tomi
1735     x86
1736     x86_32
1737     x86_64
1738 "
1739
1740 ARCH_EXT_LIST_ARM="
1741     armv5te
1742     armv6
1743     armv6t2
1744     armv8
1745     neon
1746     vfp
1747     vfpv3
1748     setend
1749 "
1750
1751 ARCH_EXT_LIST_MIPS="
1752     mipsfpu
1753     mips32r2
1754     mips32r5
1755     mips64r2
1756     mips32r6
1757     mips64r6
1758     mipsdsp
1759     mipsdspr2
1760     msa
1761 "
1762
1763 ARCH_EXT_LIST_LOONGSON="
1764     loongson2
1765     loongson3
1766     mmi
1767 "
1768
1769 ARCH_EXT_LIST_X86_SIMD="
1770     aesni
1771     amd3dnow
1772     amd3dnowext
1773     avx
1774     avx2
1775     fma3
1776     fma4
1777     mmx
1778     mmxext
1779     sse
1780     sse2
1781     sse3
1782     sse4
1783     sse42
1784     ssse3
1785     xop
1786 "
1787
1788 ARCH_EXT_LIST_PPC="
1789     altivec
1790     dcbzl
1791     ldbrx
1792     power8
1793     ppc4xx
1794     vsx
1795 "
1796
1797 ARCH_EXT_LIST_X86="
1798     $ARCH_EXT_LIST_X86_SIMD
1799     cpunop
1800     i686
1801 "
1802
1803 ARCH_EXT_LIST="
1804     $ARCH_EXT_LIST_ARM
1805     $ARCH_EXT_LIST_PPC
1806     $ARCH_EXT_LIST_X86
1807     $ARCH_EXT_LIST_MIPS
1808     $ARCH_EXT_LIST_LOONGSON
1809 "
1810
1811 ARCH_FEATURES="
1812     aligned_stack
1813     fast_64bit
1814     fast_clz
1815     fast_cmov
1816     local_aligned_8
1817     local_aligned_16
1818     local_aligned_32
1819     simd_align_16
1820 "
1821
1822 BUILTIN_LIST="
1823     atomic_cas_ptr
1824     atomic_compare_exchange
1825     machine_rw_barrier
1826     MemoryBarrier
1827     mm_empty
1828     rdtsc
1829     sarestart
1830     sem_timedwait
1831     sync_val_compare_and_swap
1832 "
1833 HAVE_LIST_CMDLINE="
1834     inline_asm
1835     symver
1836     yasm
1837 "
1838
1839 HAVE_LIST_PUB="
1840     bigendian
1841     fast_unaligned
1842 "
1843
1844 HEADERS_LIST="
1845     alsa_asoundlib_h
1846     altivec_h
1847     arpa_inet_h
1848     asm_types_h
1849     cdio_paranoia_h
1850     cdio_paranoia_paranoia_h
1851     cuda_h
1852     dispatch_dispatch_h
1853     dev_bktr_ioctl_bt848_h
1854     dev_bktr_ioctl_meteor_h
1855     dev_ic_bt8xx_h
1856     dev_video_bktr_ioctl_bt848_h
1857     dev_video_meteor_ioctl_meteor_h
1858     direct_h
1859     dirent_h
1860     dlfcn_h
1861     d3d11_h
1862     dxva_h
1863     ES2_gl_h
1864     gsm_h
1865     io_h
1866     mach_mach_time_h
1867     machine_ioctl_bt848_h
1868     machine_ioctl_meteor_h
1869     malloc_h
1870     opencv2_core_core_c_h
1871     openjpeg_2_1_openjpeg_h
1872     openjpeg_2_0_openjpeg_h
1873     openjpeg_1_5_openjpeg_h
1874     OpenGL_gl3_h
1875     poll_h
1876     sndio_h
1877     soundcard_h
1878     stdatomic_h
1879     sys_mman_h
1880     sys_param_h
1881     sys_resource_h
1882     sys_select_h
1883     sys_soundcard_h
1884     sys_time_h
1885     sys_un_h
1886     sys_videoio_h
1887     termios_h
1888     udplite_h
1889     unistd_h
1890     valgrind_valgrind_h
1891     windows_h
1892     winsock2_h
1893 "
1894
1895 INTRINSICS_LIST="
1896     intrinsics_neon
1897 "
1898
1899 COMPLEX_FUNCS="
1900     cabs
1901     cexp
1902 "
1903
1904 MATH_FUNCS="
1905     atanf
1906     atan2f
1907     cbrt
1908     cbrtf
1909     copysign
1910     cosf
1911     erf
1912     exp2
1913     exp2f
1914     expf
1915     hypot
1916     isfinite
1917     isinf
1918     isnan
1919     ldexpf
1920     llrint
1921     llrintf
1922     log2
1923     log2f
1924     log10f
1925     lrint
1926     lrintf
1927     powf
1928     rint
1929     round
1930     roundf
1931     sinf
1932     trunc
1933     truncf
1934 "
1935
1936 SYSTEM_FUNCS="
1937     access
1938     aligned_malloc
1939     arc4random
1940     clock_gettime
1941     closesocket
1942     CommandLineToArgvW
1943     CoTaskMemFree
1944     CryptGenRandom
1945     dlopen
1946     fcntl
1947     flt_lim
1948     fork
1949     getaddrinfo
1950     gethrtime
1951     getopt
1952     GetProcessAffinityMask
1953     GetProcessMemoryInfo
1954     GetProcessTimes
1955     getrusage
1956     GetSystemTimeAsFileTime
1957     gettimeofday
1958     glob
1959     glXGetProcAddress
1960     gmtime_r
1961     inet_aton
1962     isatty
1963     jack_port_get_latency_range
1964     kbhit
1965     LoadLibrary
1966     localtime_r
1967     lstat
1968     lzo1x_999_compress
1969     mach_absolute_time
1970     MapViewOfFile
1971     memalign
1972     mkstemp
1973     mmap
1974     mprotect
1975     nanosleep
1976     PeekNamedPipe
1977     posix_memalign
1978     pthread_cancel
1979     sched_getaffinity
1980     SetConsoleTextAttribute
1981     SetConsoleCtrlHandler
1982     setmode
1983     setrlimit
1984     Sleep
1985     strerror_r
1986     sysconf
1987     sysctl
1988     usleep
1989     UTGetOSTypeFromString
1990     VirtualAlloc
1991     wglGetProcAddress
1992 "
1993
1994 TOOLCHAIN_FEATURES="
1995     as_dn_directive
1996     as_fpu_directive
1997     as_func
1998     as_object_arch
1999     asm_mod_q
2000     attribute_may_alias
2001     attribute_packed
2002     ebp_available
2003     ebx_available
2004     gnu_as
2005     gnu_windres
2006     ibm_asm
2007     inline_asm_direct_symbol_refs
2008     inline_asm_labels
2009     inline_asm_nonlocal_labels
2010     pragma_deprecated
2011     rsync_contimeout
2012     symver_asm_label
2013     symver_gnu_asm
2014     vfp_args
2015     xform_asm
2016     xmm_clobbers
2017 "
2018
2019 TYPES_LIST="
2020     CONDITION_VARIABLE_Ptr
2021     socklen_t
2022     struct_addrinfo
2023     struct_group_source_req
2024     struct_ip_mreq_source
2025     struct_ipv6_mreq
2026     struct_msghdr_msg_flags
2027     struct_pollfd
2028     struct_rusage_ru_maxrss
2029     struct_sctp_event_subscribe
2030     struct_sockaddr_in6
2031     struct_sockaddr_sa_len
2032     struct_sockaddr_storage
2033     struct_stat_st_mtim_tv_nsec
2034     struct_v4l2_frmivalenum_discrete
2035 "
2036
2037 HAVE_LIST="
2038     $ARCH_EXT_LIST
2039     $(add_suffix _external $ARCH_EXT_LIST)
2040     $(add_suffix _inline   $ARCH_EXT_LIST)
2041     $ARCH_FEATURES
2042     $ATOMICS_LIST
2043     $BUILTIN_LIST
2044     $COMPLEX_FUNCS
2045     $HAVE_LIST_CMDLINE
2046     $HAVE_LIST_PUB
2047     $HEADERS_LIST
2048     $INTRINSICS_LIST
2049     $MATH_FUNCS
2050     $SYSTEM_FUNCS
2051     $THREADS_LIST
2052     $TOOLCHAIN_FEATURES
2053     $TYPES_LIST
2054     atomics_native
2055     dos_paths
2056     dxva2_lib
2057     dxva2api_cobj
2058     libc_msvcrt
2059     libdc1394_1
2060     libdc1394_2
2061     makeinfo
2062     makeinfo_html
2063     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2064     perl
2065     pod2man
2066     sdl2
2067     section_data_rel_ro
2068     texi2html
2069     threads
2070     vaapi_drm
2071     vaapi_x11
2072     vdpau_x11
2073     winrt
2074     xlib
2075 "
2076
2077 # options emitted with CONFIG_ prefix but not available on the command line
2078 CONFIG_EXTRA="
2079     aandcttables
2080     ac3dsp
2081     audio_frame_queue
2082     audiodsp
2083     blockdsp
2084     bswapdsp
2085     cabac
2086     dirac_parse
2087     dvprofile
2088     exif
2089     faandct
2090     faanidct
2091     fdctdsp
2092     flacdsp
2093     fmtconvert
2094     frame_thread_encoder
2095     g722dsp
2096     golomb
2097     gplv3
2098     h263dsp
2099     h264chroma
2100     h264dsp
2101     h264parse
2102     h264pred
2103     h264qpel
2104     hpeldsp
2105     huffman
2106     huffyuvdsp
2107     huffyuvencdsp
2108     idctdsp
2109     iirfilter
2110     mdct15
2111     intrax8
2112     iso_media
2113     ividsp
2114     jpegtables
2115     lgplv3
2116     libx262
2117     llauddsp
2118     llviddsp
2119     llvidencdsp
2120     lpc
2121     lzf
2122     me_cmp
2123     mpeg_er
2124     mpegaudio
2125     mpegaudiodsp
2126     mpegvideo
2127     mpegvideoenc
2128     mss34dsp
2129     pixblockdsp
2130     qpeldsp
2131     qsv
2132     qsvdec
2133     qsvenc
2134     rangecoder
2135     riffdec
2136     riffenc
2137     rtpdec
2138     rtpenc_chain
2139     rv34dsp
2140     sinewin
2141     snappy
2142     srtp
2143     startcode
2144     texturedsp
2145     texturedspenc
2146     tpeldsp
2147     vaapi_encode
2148     vc1dsp
2149     videodsp
2150     vp3dsp
2151     vp56dsp
2152     vp8dsp
2153     vt_bt2020
2154     wma_freqs
2155     wmv2dsp
2156 "
2157
2158 CMDLINE_SELECT="
2159     $ARCH_EXT_LIST
2160     $CONFIG_LIST
2161     $HAVE_LIST_CMDLINE
2162     $THREADS_LIST
2163     asm
2164     cross_compile
2165     debug
2166     extra_warnings
2167     logging
2168     lto
2169     optimizations
2170     rpath
2171     stripping
2172 "
2173
2174 PATHS_LIST="
2175     bindir
2176     datadir
2177     docdir
2178     incdir
2179     libdir
2180     mandir
2181     pkgconfigdir
2182     prefix
2183     shlibdir
2184     install_name_dir
2185 "
2186
2187 CMDLINE_SET="
2188     $PATHS_LIST
2189     ar
2190     arch
2191     as
2192     assert_level
2193     build_suffix
2194     cc
2195     objcc
2196     cpu
2197     cross_prefix
2198     custom_allocator
2199     cxx
2200     dep_cc
2201     doxygen
2202     env
2203     extra_version
2204     gas
2205     host_cc
2206     host_cflags
2207     host_ld
2208     host_ldflags
2209     host_libs
2210     host_os
2211     install
2212     ld
2213     ln_s
2214     logfile
2215     malloc_prefix
2216     nm
2217     optflags
2218     pkg_config
2219     pkg_config_flags
2220     progs_suffix
2221     random_seed
2222     ranlib
2223     samples
2224     strip
2225     sws_max_filter_size
2226     sysinclude
2227     sysroot
2228     target_exec
2229     target_os
2230     target_path
2231     target_samples
2232     tempprefix
2233     toolchain
2234     valgrind
2235     yasmexe
2236 "
2237
2238 CMDLINE_APPEND="
2239     extra_cflags
2240     extra_cxxflags
2241     extra_objcflags
2242     host_cppflags
2243 "
2244
2245 # code dependency declarations
2246
2247 # architecture extensions
2248
2249 armv5te_deps="arm"
2250 armv6_deps="arm"
2251 armv6t2_deps="arm"
2252 armv8_deps="aarch64"
2253 neon_deps_any="aarch64 arm"
2254 intrinsics_neon_deps="neon"
2255 vfp_deps_any="aarch64 arm"
2256 vfpv3_deps="vfp"
2257 setend_deps="arm"
2258
2259 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2260
2261 loongson2_deps="mips"
2262 loongson3_deps="mips"
2263 mipsfpu_deps="mips"
2264 mipsdsp_deps="mips"
2265 mipsdspr2_deps="mips"
2266 mips32r2_deps="mips"
2267 mips32r5_deps="mips"
2268 mips32r6_deps="mips"
2269 mips64r2_deps="mips"
2270 mips64r6_deps="mips"
2271 msa_deps="mipsfpu"
2272 mmi_deps="mips"
2273
2274 altivec_deps="ppc"
2275 dcbzl_deps="ppc"
2276 ldbrx_deps="ppc"
2277 ppc4xx_deps="ppc"
2278 vsx_deps="altivec"
2279 power8_deps="vsx"
2280
2281 cpunop_deps="i686"
2282 x86_64_select="i686"
2283 x86_64_suggest="fast_cmov"
2284
2285 amd3dnow_deps="mmx"
2286 amd3dnowext_deps="amd3dnow"
2287 i686_deps="x86"
2288 mmx_deps="x86"
2289 mmxext_deps="mmx"
2290 sse_deps="mmxext"
2291 sse2_deps="sse"
2292 sse3_deps="sse2"
2293 ssse3_deps="sse3"
2294 sse4_deps="ssse3"
2295 sse42_deps="sse4"
2296 aesni_deps="sse42"
2297 avx_deps="sse42"
2298 xop_deps="avx"
2299 fma3_deps="avx"
2300 fma4_deps="avx"
2301 avx2_deps="avx"
2302
2303 mmx_external_deps="yasm"
2304 mmx_inline_deps="inline_asm"
2305 mmx_suggest="mmx_external mmx_inline"
2306
2307 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2308     eval dep=\$${ext}_deps
2309     eval ${ext}_external_deps='"${dep}_external"'
2310     eval ${ext}_inline_deps='"${dep}_inline"'
2311     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2312 done
2313
2314 aligned_stack_if_any="aarch64 ppc x86"
2315 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2316 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2317 fast_unaligned_if_any="aarch64 ppc x86"
2318 simd_align_16_if_any="altivec neon sse"
2319
2320 # system capabilities
2321 symver_if_any="symver_asm_label symver_gnu_asm"
2322 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
2323
2324 # threading support
2325 atomics_gcc_if_any="sync_val_compare_and_swap atomic_compare_exchange"
2326 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2327 atomics_win32_if="MemoryBarrier"
2328 atomics_native_if_any="$ATOMICS_LIST"
2329 w32threads_deps="atomics_native"
2330 threads_if_any="$THREADS_LIST"
2331
2332 # subsystems
2333 dct_select="rdft"
2334 dirac_parse_select="golomb"
2335 error_resilience_select="me_cmp"
2336 faandct_deps="faan fdctdsp"
2337 faanidct_deps="faan idctdsp"
2338 h264dsp_select="startcode"
2339 frame_thread_encoder_deps="encoders threads"
2340 intrax8_select="blockdsp idctdsp"
2341 mdct_select="fft"
2342 mdct15_select="fft"
2343 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2344 mpeg_er_select="error_resilience"
2345 mpegaudio_select="mpegaudiodsp"
2346 mpegaudiodsp_select="dct"
2347 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2348 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2349 vc1dsp_select="h264chroma qpeldsp startcode"
2350 rdft_select="fft"
2351
2352 # decoders / encoders
2353 aac_decoder_select="mdct15 mdct sinewin"
2354 aac_fixed_decoder_select="mdct sinewin"
2355 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2356 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2357 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2358 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2359 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2360 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2361 adpcm_g722_decoder_select="g722dsp"
2362 adpcm_g722_encoder_select="g722dsp"
2363 aic_decoder_select="golomb idctdsp"
2364 alac_encoder_select="lpc"
2365 als_decoder_select="bswapdsp"
2366 amrnb_decoder_select="lsp"
2367 amrwb_decoder_select="lsp"
2368 amv_decoder_select="sp5x_decoder exif"
2369 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2370 ape_decoder_select="bswapdsp llauddsp"
2371 apng_decoder_select="zlib"
2372 apng_encoder_select="llvidencdsp zlib"
2373 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2374 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2375 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2376 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2377 atrac1_decoder_select="mdct sinewin"
2378 atrac3_decoder_select="mdct"
2379 atrac3p_decoder_select="mdct sinewin"
2380 avrn_decoder_select="exif jpegtables"
2381 bink_decoder_select="blockdsp hpeldsp"
2382 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2383 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2384 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2385 cllc_decoder_select="bswapdsp"
2386 comfortnoise_encoder_select="lpc"
2387 cook_decoder_select="audiodsp mdct sinewin"
2388 cscd_decoder_select="lzo"
2389 cscd_decoder_suggest="zlib"
2390 dca_decoder_select="mdct"
2391 dds_decoder_select="texturedsp"
2392 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2393 dnxhd_decoder_select="blockdsp idctdsp"
2394 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2395 dvvideo_decoder_select="dvprofile idctdsp"
2396 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2397 dxa_decoder_select="zlib"
2398 dxv_decoder_select="lzf texturedsp"
2399 eac3_decoder_select="ac3_decoder"
2400 eac3_encoder_select="ac3_encoder"
2401 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2402 eatgq_decoder_select="aandcttables"
2403 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2404 exr_decoder_select="zlib"
2405 ffv1_decoder_select="golomb rangecoder"
2406 ffv1_encoder_select="rangecoder"
2407 ffvhuff_decoder_select="huffyuv_decoder"
2408 ffvhuff_encoder_select="huffyuv_encoder"
2409 fic_decoder_select="golomb"
2410 flac_decoder_select="flacdsp golomb"
2411 flac_encoder_select="bswapdsp flacdsp golomb lpc"
2412 flashsv2_decoder_select="zlib"
2413 flashsv2_encoder_select="zlib"
2414 flashsv_decoder_select="zlib"
2415 flashsv_encoder_select="zlib"
2416 flv_decoder_select="h263_decoder"
2417 flv_encoder_select="h263_encoder"
2418 fourxm_decoder_select="blockdsp bswapdsp"
2419 fraps_decoder_select="bswapdsp huffman"
2420 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2421 g729_decoder_select="audiodsp"
2422 h261_decoder_select="mpegvideo"
2423 h261_encoder_select="aandcttables mpegvideoenc"
2424 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2425 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2426 h263i_decoder_select="h263_decoder"
2427 h263p_decoder_select="h263_decoder"
2428 h263p_encoder_select="h263_encoder"
2429 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2430 h264_decoder_suggest="error_resilience"
2431 hap_decoder_select="snappy texturedsp"
2432 hap_encoder_deps="libsnappy"
2433 hap_encoder_select="texturedspenc"
2434 hevc_decoder_select="bswapdsp cabac golomb videodsp"
2435 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2436 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2437 iac_decoder_select="imc_decoder"
2438 imc_decoder_select="bswapdsp fft mdct sinewin"
2439 indeo3_decoder_select="hpeldsp"
2440 indeo4_decoder_select="ividsp"
2441 indeo5_decoder_select="ividsp"
2442 interplay_video_decoder_select="hpeldsp"
2443 jpegls_decoder_select="golomb mjpeg_decoder"
2444 jpegls_encoder_select="golomb"
2445 jv_decoder_select="blockdsp"
2446 lagarith_decoder_select="llviddsp"
2447 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2448 loco_decoder_select="golomb"
2449 magicyuv_decoder_select="llviddsp"
2450 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2451 metasound_decoder_select="lsp mdct sinewin"
2452 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2453 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2454 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2455 mjpegb_decoder_select="mjpeg_decoder"
2456 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2457 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2458 mlp_decoder_select="mlp_parser"
2459 motionpixels_decoder_select="bswapdsp"
2460 mp1_decoder_select="mpegaudio"
2461 mp1float_decoder_select="mpegaudio"
2462 mp2_decoder_select="mpegaudio"
2463 mp2float_decoder_select="mpegaudio"
2464 mp3_decoder_select="mpegaudio"
2465 mp3adu_decoder_select="mpegaudio"
2466 mp3adufloat_decoder_select="mpegaudio"
2467 mp3float_decoder_select="mpegaudio"
2468 mp3on4_decoder_select="mpegaudio"
2469 mp3on4float_decoder_select="mpegaudio"
2470 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2471 mpc8_decoder_select="mpegaudiodsp"
2472 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2473 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2474 mpegvideo_decoder_select="mpegvideo"
2475 mpeg1video_decoder_select="mpegvideo"
2476 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2477 mpeg2video_decoder_select="mpegvideo"
2478 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2479 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2480 mpeg4_encoder_select="h263_encoder"
2481 msa1_decoder_select="mss34dsp"
2482 msmpeg4v1_decoder_select="h263_decoder"
2483 msmpeg4v2_decoder_select="h263_decoder"
2484 msmpeg4v2_encoder_select="h263_encoder"
2485 msmpeg4v3_decoder_select="h263_decoder"
2486 msmpeg4v3_encoder_select="h263_encoder"
2487 mss2_decoder_select="vc1_decoder mpegvideo"
2488 mts2_decoder_select="mss34dsp"
2489 mxpeg_decoder_select="mjpeg_decoder"
2490 nellymoser_decoder_select="mdct sinewin"
2491 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2492 nuv_decoder_select="idctdsp lzo"
2493 on2avc_decoder_select="mdct"
2494 opus_decoder_deps="swresample"
2495 opus_decoder_select="mdct15"
2496 opus_encoder_select="audio_frame_queue mdct15"
2497 png_decoder_select="zlib"
2498 png_encoder_select="llvidencdsp zlib"
2499 prores_decoder_select="blockdsp idctdsp"
2500 prores_encoder_select="fdctdsp"
2501 qcelp_decoder_select="lsp"
2502 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2503 ra_144_decoder_select="audiodsp"
2504 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2505 ralf_decoder_select="golomb"
2506 rawvideo_decoder_select="bswapdsp"
2507 rscc_decoder_select="zlib"
2508 rtjpeg_decoder_select="me_cmp"
2509 rv10_decoder_select="h263_decoder"
2510 rv10_encoder_select="h263_encoder"
2511 rv20_decoder_select="h263_decoder"
2512 rv20_encoder_select="h263_encoder"
2513 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2514 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2515 screenpresso_decoder_select="zlib"
2516 shorten_decoder_select="golomb"
2517 sipr_decoder_select="lsp"
2518 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2519 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2520 sonic_decoder_select="golomb rangecoder"
2521 sonic_encoder_select="golomb rangecoder"
2522 sonic_ls_encoder_select="golomb rangecoder"
2523 sp5x_decoder_select="mjpeg_decoder"
2524 svq1_decoder_select="hpeldsp"
2525 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2526 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2527 svq3_decoder_suggest="zlib"
2528 tak_decoder_select="audiodsp"
2529 tdsc_decoder_select="zlib mjpeg_decoder"
2530 theora_decoder_select="vp3_decoder"
2531 thp_decoder_select="mjpeg_decoder"
2532 tiff_decoder_suggest="zlib lzma"
2533 tiff_encoder_suggest="zlib"
2534 truehd_decoder_select="mlp_parser"
2535 truemotion2_decoder_select="bswapdsp"
2536 truespeech_decoder_select="bswapdsp"
2537 tscc_decoder_select="zlib"
2538 twinvq_decoder_select="mdct lsp sinewin"
2539 txd_decoder_select="texturedsp"
2540 utvideo_decoder_select="bswapdsp llviddsp"
2541 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2542 vble_decoder_select="llviddsp"
2543 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2544 vc1_qsv_decoder_deps="libmfx"
2545 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel"
2546 vc1image_decoder_select="vc1_decoder"
2547 vorbis_decoder_select="mdct"
2548 vorbis_encoder_select="mdct"
2549 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2550 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2551 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2552 vp6a_decoder_select="vp6_decoder"
2553 vp6f_decoder_select="vp6_decoder"
2554 vp7_decoder_select="h264pred videodsp vp8dsp"
2555 vp8_decoder_select="h264pred videodsp vp8dsp"
2556 vp9_decoder_select="videodsp vp9_parser"
2557 webp_decoder_select="vp8_decoder exif"
2558 wmalossless_decoder_select="llauddsp"
2559 wmapro_decoder_select="mdct sinewin wma_freqs"
2560 wmav1_decoder_select="mdct sinewin wma_freqs"
2561 wmav1_encoder_select="mdct sinewin wma_freqs"
2562 wmav2_decoder_select="mdct sinewin wma_freqs"
2563 wmav2_encoder_select="mdct sinewin wma_freqs"
2564 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2565 wmv1_decoder_select="h263_decoder"
2566 wmv1_encoder_select="h263_encoder"
2567 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2568 wmv2_encoder_select="h263_encoder wmv2dsp"
2569 wmv3_decoder_select="vc1_decoder"
2570 wmv3image_decoder_select="wmv3_decoder"
2571 xma1_decoder_select="wmapro_decoder"
2572 xma2_decoder_select="wmapro_decoder"
2573 zerocodec_decoder_select="zlib"
2574 zlib_decoder_select="zlib"
2575 zlib_encoder_select="zlib"
2576 zmbv_decoder_select="zlib"
2577 zmbv_encoder_select="zlib"
2578
2579 # platform codecs
2580 audiotoolbox_deps="AudioToolbox_AudioToolbox_h"
2581 audiotoolbox_extralibs="-framework CoreFoundation -framework AudioToolbox -framework CoreMedia"
2582
2583 # hardware accelerators
2584 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2585 cuda_deps_any="dlopen LoadLibrary"
2586 cuvid_deps="cuda"
2587 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2588 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2589 dxva2_extralibs="-luser32"
2590 vaapi_deps="va_va_h"
2591 vda_framework_deps="VideoDecodeAcceleration_VDADecoder_h"
2592 vda_framework_extralibs="-framework VideoDecodeAcceleration"
2593 vda_deps="vda_framework pthreads"
2594 vda_extralibs="-framework CoreFoundation -framework QuartzCore"
2595 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2596 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2597 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2598 xvmc_deps="X11_extensions_XvMClib_h"
2599
2600 h263_vaapi_hwaccel_deps="vaapi"
2601 h263_vaapi_hwaccel_select="h263_decoder"
2602 h263_videotoolbox_hwaccel_deps="videotoolbox"
2603 h263_videotoolbox_hwaccel_select="h263_decoder"
2604 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2605 h264_cuvid_hwaccel_deps="cuda cuvid"
2606 h264_d3d11va_hwaccel_deps="d3d11va"
2607 h264_d3d11va_hwaccel_select="h264_decoder"
2608 h264_dxva2_hwaccel_deps="dxva2"
2609 h264_dxva2_hwaccel_select="h264_decoder"
2610 h264_mediacodec_decoder_deps="mediacodec"
2611 h264_mediacodec_hwaccel_deps="mediacodec"
2612 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2613 h264_mmal_decoder_deps="mmal"
2614 h264_mmal_decoder_select="mmal"
2615 h264_mmal_hwaccel_deps="mmal"
2616 h264_omx_encoder_deps="omx"
2617 h264_qsv_hwaccel_deps="libmfx"
2618 h264_vaapi_hwaccel_deps="vaapi"
2619 h264_vaapi_hwaccel_select="h264_decoder"
2620 h264_vda_decoder_deps="vda"
2621 h264_vda_decoder_select="h264_decoder"
2622 h264_vda_hwaccel_deps="vda"
2623 h264_vda_hwaccel_select="h264_decoder"
2624 h264_vda_old_hwaccel_deps="vda"
2625 h264_vda_old_hwaccel_select="h264_decoder"
2626 h264_vdpau_decoder_deps="vdpau"
2627 h264_vdpau_decoder_select="h264_decoder"
2628 h264_vdpau_hwaccel_deps="vdpau"
2629 h264_vdpau_hwaccel_select="h264_decoder"
2630 h264_videotoolbox_hwaccel_deps="videotoolbox"
2631 h264_videotoolbox_hwaccel_select="h264_decoder"
2632 hevc_cuvid_hwaccel_deps="cuda cuvid"
2633 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2634 hevc_d3d11va_hwaccel_select="hevc_decoder"
2635 hevc_mediacodec_decoder_deps="mediacodec"
2636 hevc_mediacodec_hwaccel_deps="mediacodec"
2637 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2638 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2639 hevc_dxva2_hwaccel_select="hevc_decoder"
2640 hevc_qsv_hwaccel_deps="libmfx"
2641 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2642 hevc_vaapi_hwaccel_select="hevc_decoder"
2643 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2644 hevc_vdpau_hwaccel_select="hevc_decoder"
2645 mjpeg_cuvid_hwaccel_deps="cuda cuvid"
2646 mpeg_vdpau_decoder_deps="vdpau"
2647 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2648 mpeg_xvmc_hwaccel_deps="xvmc"
2649 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2650 mpeg1_cuvid_hwaccel_deps="cuda cuvid"
2651 mpeg1_vdpau_decoder_deps="vdpau"
2652 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2653 mpeg1_vdpau_hwaccel_deps="vdpau"
2654 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2655 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2656 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2657 mpeg1_xvmc_hwaccel_deps="xvmc"
2658 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2659 mpeg2_crystalhd_decoder_select="crystalhd"
2660 mpeg2_cuvid_hwaccel_deps="cuda cuvid"
2661 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2662 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2663 mpeg2_dxva2_hwaccel_deps="dxva2"
2664 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2665 mpeg2_mmal_decoder_deps="mmal"
2666 mpeg2_mmal_decoder_select="mmal"
2667 mpeg2_mmal_hwaccel_deps="mmal"
2668 mpeg2_qsv_hwaccel_deps="libmfx"
2669 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2670 mpeg2_vaapi_hwaccel_deps="vaapi"
2671 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2672 mpeg2_vdpau_hwaccel_deps="vdpau"
2673 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2674 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2675 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2676 mpeg2_xvmc_hwaccel_deps="xvmc"
2677 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2678 mpeg4_crystalhd_decoder_select="crystalhd"
2679 mpeg4_cuvid_hwaccel_deps="cuda cuvid"
2680 mpeg4_mediacodec_decoder_deps="mediacodec"
2681 mpeg4_mediacodec_hwaccel_deps="mediacodec"
2682 mpeg4_mmal_decoder_deps="mmal"
2683 mpeg4_mmal_decoder_select="mmal"
2684 mpeg4_mmal_hwaccel_deps="mmal"
2685 mpeg4_omx_encoder_deps="omx"
2686 mpeg4_vaapi_hwaccel_deps="vaapi"
2687 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2688 mpeg4_vdpau_decoder_deps="vdpau"
2689 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2690 mpeg4_vdpau_hwaccel_deps="vdpau"
2691 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2692 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2693 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2694 msmpeg4_crystalhd_decoder_select="crystalhd"
2695 vc1_crystalhd_decoder_select="crystalhd"
2696 vc1_cuvid_hwaccel_deps="cuda cuvid"
2697 vc1_d3d11va_hwaccel_deps="d3d11va"
2698 vc1_d3d11va_hwaccel_select="vc1_decoder"
2699 vc1_dxva2_hwaccel_deps="dxva2"
2700 vc1_dxva2_hwaccel_select="vc1_decoder"
2701 vc1_mmal_decoder_deps="mmal"
2702 vc1_mmal_decoder_select="mmal"
2703 vc1_mmal_hwaccel_deps="mmal"
2704 vc1_qsv_hwaccel_deps="libmfx"
2705 vc1_qsv_hwaccel_select="qsvdec_vc1"
2706 vc1_vaapi_hwaccel_deps="vaapi"
2707 vc1_vaapi_hwaccel_select="vc1_decoder"
2708 vc1_vdpau_decoder_deps="vdpau"
2709 vc1_vdpau_decoder_select="vc1_decoder"
2710 vc1_vdpau_hwaccel_deps="vdpau"
2711 vc1_vdpau_hwaccel_select="vc1_decoder"
2712 vp8_cuvid_hwaccel_deps="cuda cuvid"
2713 vp9_cuvid_hwaccel_deps="cuda cuvid"
2714 vp8_mediacodec_decoder_deps="mediacodec"
2715 vp8_mediacodec_hwaccel_deps="mediacodec"
2716 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2717 vp9_d3d11va_hwaccel_select="vp9_decoder"
2718 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2719 vp9_dxva2_hwaccel_select="vp9_decoder"
2720 vp9_mediacodec_decoder_deps="mediacodec"
2721 vp9_mediacodec_hwaccel_deps="mediacodec"
2722 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2723 vp9_vaapi_hwaccel_select="vp9_decoder"
2724 wmv3_crystalhd_decoder_select="crystalhd"
2725 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2726 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2727 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2728 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2729 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2730
2731 # hardware-accelerated codecs
2732 omx_deps="dlopen pthreads"
2733 omx_extralibs='$ldl'
2734 qsvdec_select="qsv"
2735 qsvenc_select="qsv"
2736 vaapi_encode_deps="vaapi"
2737
2738 hwupload_cuda_filter_deps="cuda"
2739 scale_npp_filter_deps="cuda libnpp"
2740
2741 nvenc_deps="cuda"
2742 nvenc_deps_any="dlopen LoadLibrary"
2743 nvenc_encoder_deps="nvenc"
2744 h264_cuvid_decoder_deps="cuda cuvid"
2745 h264_cuvid_decoder_select="h264_mp4toannexb_bsf h264_cuvid_hwaccel"
2746 h264_nvenc_encoder_deps="nvenc"
2747 h264_qsv_decoder_deps="libmfx"
2748 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2749 h264_qsv_encoder_deps="libmfx"
2750 h264_qsv_encoder_select="qsvenc"
2751 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2752 h264_vaapi_encoder_select="vaapi_encode golomb"
2753
2754 hevc_cuvid_decoder_deps="cuda cuvid"
2755 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf hevc_cuvid_hwaccel"
2756 hevc_nvenc_encoder_deps="nvenc"
2757 hevc_qsv_decoder_deps="libmfx"
2758 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2759 hevc_qsv_encoder_deps="libmfx"
2760 hevc_qsv_encoder_select="qsvenc"
2761 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2762 hevc_vaapi_encoder_select="vaapi_encode golomb"
2763 mjpeg_cuvid_decoder_deps="cuda cuvid"
2764 mjpeg_cuvid_decoder_select="mjpeg_cuvid_hwaccel"
2765 mpeg1_cuvid_decoder_deps="cuda cuvid"
2766 mpeg1_cuvid_decoder_select="mpeg1_cuvid_hwaccel"
2767 mpeg2_cuvid_decoder_deps="cuda cuvid"
2768 mpeg2_cuvid_decoder_select="mpeg2_cuvid_hwaccel"
2769 mpeg2_qsv_decoder_deps="libmfx"
2770 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2771 mpeg2_qsv_encoder_deps="libmfx"
2772 mpeg2_qsv_encoder_select="qsvenc"
2773 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2774 mpeg2_vaapi_encoder_select="vaapi_encode"
2775 mpeg4_cuvid_decoder_deps="cuda cuvid"
2776 mpeg4_cuvid_decoder_select="mpeg4_cuvid_hwaccel"
2777 nvenc_h264_encoder_deps="nvenc"
2778 nvenc_hevc_encoder_deps="nvenc"
2779
2780 vc1_cuvid_decoder_deps="cuda cuvid"
2781 vc1_cuvid_decoder_select="vc1_cuvid_hwaccel"
2782 vp8_cuvid_decoder_deps="cuda cuvid"
2783 vp8_cuvid_decoder_select="vp8_cuvid_hwaccel"
2784 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2785 vp8_vaapi_encoder_select="vaapi_encode"
2786 vp9_cuvid_decoder_deps="cuda cuvid"
2787 vp9_cuvid_decoder_select="vp9_cuvid_hwaccel"
2788
2789 # parsers
2790 h264_parser_select="golomb h264dsp h264parse"
2791 hevc_parser_select="golomb"
2792 mpegvideo_parser_select="mpegvideo"
2793 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2794 vc1_parser_select="vc1dsp"
2795
2796 # bitstream_filters
2797 mjpeg2jpeg_bsf_select="jpegtables"
2798
2799 # external libraries
2800 aac_at_decoder_deps="audiotoolbox"
2801 ac3_at_decoder_deps="audiotoolbox"
2802 ac3_at_decoder_select="ac3_parser"
2803 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2804 alac_at_decoder_deps="audiotoolbox"
2805 amr_nb_at_decoder_deps="audiotoolbox"
2806 avisynth_deps_any="dlopen LoadLibrary"
2807 avisynth_demuxer_deps="avisynth"
2808 avisynth_demuxer_select="riffdec"
2809 eac3_at_decoder_deps="audiotoolbox"
2810 eac3_at_decoder_select="ac3_parser"
2811 gsm_ms_at_decoder_deps="audiotoolbox"
2812 ilbc_at_decoder_deps="audiotoolbox"
2813 mp1_at_decoder_deps="audiotoolbox"
2814 mp2_at_decoder_deps="audiotoolbox"
2815 mp3_at_decoder_deps="audiotoolbox"
2816 pcm_alaw_at_decoder_deps="audiotoolbox"
2817 pcm_mulaw_at_decoder_deps="audiotoolbox"
2818 qdmc_at_decoder_deps="audiotoolbox"
2819 qdm2_at_decoder_deps="audiotoolbox"
2820 aac_at_encoder_deps="audiotoolbox"
2821 aac_at_encoder_select="audio_frame_queue"
2822 alac_at_encoder_deps="audiotoolbox"
2823 alac_at_encoder_select="audio_frame_queue"
2824 ilbc_at_encoder_deps="audiotoolbox"
2825 ilbc_at_encoder_select="audio_frame_queue"
2826 pcm_alaw_at_encoder_deps="audiotoolbox"
2827 pcm_alaw_at_encoder_select="audio_frame_queue"
2828 pcm_mulaw_at_encoder_deps="audiotoolbox"
2829 pcm_mulaw_at_encoder_select="audio_frame_queue"
2830 chromaprint_muxer_deps="chromaprint"
2831 h264_videotoolbox_encoder_deps="videotoolbox_encoder pthreads"
2832 libcelt_decoder_deps="libcelt"
2833 libfdk_aac_decoder_deps="libfdk_aac"
2834 libfdk_aac_encoder_deps="libfdk_aac"
2835 libfdk_aac_encoder_select="audio_frame_queue"
2836 libgme_demuxer_deps="libgme"
2837 libgsm_decoder_deps="libgsm"
2838 libgsm_encoder_deps="libgsm"
2839 libgsm_ms_decoder_deps="libgsm"
2840 libgsm_ms_encoder_deps="libgsm"
2841 libilbc_decoder_deps="libilbc"
2842 libilbc_encoder_deps="libilbc"
2843 libkvazaar_encoder_deps="libkvazaar"
2844 libmodplug_demuxer_deps="libmodplug"
2845 libmp3lame_encoder_deps="libmp3lame"
2846 libmp3lame_encoder_select="audio_frame_queue"
2847 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2848 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2849 libopencore_amrnb_encoder_select="audio_frame_queue"
2850 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2851 libopenh264_decoder_deps="libopenh264"
2852 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2853 libopenh264_encoder_deps="libopenh264"
2854 libopenjpeg_decoder_deps="libopenjpeg"
2855 libopenjpeg_encoder_deps="libopenjpeg"
2856 libopenmpt_demuxer_deps="libopenmpt"
2857 libopus_decoder_deps="libopus"
2858 libopus_encoder_deps="libopus"
2859 libopus_encoder_select="audio_frame_queue"
2860 libschroedinger_decoder_deps="libschroedinger"
2861 libschroedinger_encoder_deps="libschroedinger"
2862 libshine_encoder_deps="libshine"
2863 libshine_encoder_select="audio_frame_queue"
2864 libspeex_decoder_deps="libspeex"
2865 libspeex_encoder_deps="libspeex"
2866 libspeex_encoder_select="audio_frame_queue"
2867 libtheora_encoder_deps="libtheora"
2868 libtwolame_encoder_deps="libtwolame"
2869 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2870 libvorbis_decoder_deps="libvorbis"
2871 libvorbis_encoder_deps="libvorbis"
2872 libvorbis_encoder_select="audio_frame_queue"
2873 libvpx_vp8_decoder_deps="libvpx"
2874 libvpx_vp8_encoder_deps="libvpx"
2875 libvpx_vp9_decoder_deps="libvpx"
2876 libvpx_vp9_encoder_deps="libvpx"
2877 libwavpack_encoder_deps="libwavpack"
2878 libwebp_encoder_deps="libwebp"
2879 libwebp_anim_encoder_deps="libwebp"
2880 libx262_encoder_deps="libx262"
2881 libx264_encoder_deps="libx264"
2882 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2883 libx264rgb_encoder_select="libx264_encoder"
2884 libx265_encoder_deps="libx265"
2885 libxavs_encoder_deps="libxavs"
2886 libxvid_encoder_deps="libxvid"
2887 libzvbi_teletext_decoder_deps="libzvbi"
2888 videotoolbox_deps="VideoToolbox_VideoToolbox_h"
2889 videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework CoreVideo"
2890 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2891 videotoolbox_encoder_suggest="vda_framework vt_bt2020"
2892 vt_bt2020_deps="kCVImageBufferColorPrimaries_ITU_R_2020"
2893
2894 # demuxers / muxers
2895 ac3_demuxer_select="ac3_parser"
2896 aiff_muxer_select="iso_media"
2897 asf_demuxer_select="riffdec"
2898 asf_o_demuxer_select="riffdec"
2899 asf_muxer_select="riffenc"
2900 asf_stream_muxer_select="asf_muxer"
2901 avi_demuxer_select="iso_media riffdec exif"
2902 avi_muxer_select="riffenc"
2903 caf_demuxer_select="iso_media riffdec"
2904 caf_muxer_select="iso_media"
2905 dash_muxer_select="mp4_muxer"
2906 dirac_demuxer_select="dirac_parser"
2907 dts_demuxer_select="dca_parser"
2908 dtshd_demuxer_select="dca_parser"
2909 dv_demuxer_select="dvprofile"
2910 dv_muxer_select="dvprofile"
2911 dxa_demuxer_select="riffdec"
2912 eac3_demuxer_select="ac3_parser"
2913 f4v_muxer_select="mov_muxer"
2914 fifo_muxer_deps="threads"
2915 flac_demuxer_select="flac_parser"
2916 hds_muxer_select="flv_muxer"
2917 hls_muxer_select="mpegts_muxer"
2918 image2_alias_pix_demuxer_select="image2_demuxer"
2919 image2_brender_pix_demuxer_select="image2_demuxer"
2920 ipod_muxer_select="mov_muxer"
2921 ismv_muxer_select="mov_muxer"
2922 libnut_demuxer_deps="libnut"
2923 libnut_muxer_deps="libnut"
2924 matroska_audio_muxer_select="matroska_muxer"
2925 matroska_demuxer_select="iso_media riffdec"
2926 matroska_demuxer_suggest="bzlib lzo zlib"
2927 matroska_muxer_select="iso_media riffenc"
2928 mmf_muxer_select="riffenc"
2929 mov_demuxer_select="iso_media riffdec"
2930 mov_demuxer_suggest="zlib"
2931 mov_muxer_select="iso_media riffenc rtpenc_chain"
2932 mp3_demuxer_select="mpegaudio_parser"
2933 mp4_muxer_select="mov_muxer"
2934 mpegts_demuxer_select="iso_media"
2935 mpegts_muxer_select="adts_muxer latm_muxer"
2936 mpegtsraw_demuxer_select="mpegts_demuxer"
2937 mxf_d10_muxer_select="mxf_muxer"
2938 mxf_opatom_muxer_select="mxf_muxer"
2939 nut_muxer_select="riffenc"
2940 nuv_demuxer_select="riffdec"
2941 oga_muxer_select="ogg_muxer"
2942 ogg_demuxer_select="dirac_parse"
2943 ogv_muxer_select="ogg_muxer"
2944 opus_muxer_select="ogg_muxer"
2945 psp_muxer_select="mov_muxer"
2946 rtp_demuxer_select="sdp_demuxer"
2947 rtp_muxer_select="golomb"
2948 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2949 rtsp_demuxer_select="http_protocol rtpdec"
2950 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2951 sap_demuxer_select="sdp_demuxer"
2952 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2953 sdp_demuxer_select="rtpdec"
2954 smoothstreaming_muxer_select="ismv_muxer"
2955 spdif_muxer_select="aac_parser"
2956 spx_muxer_select="ogg_muxer"
2957 swf_demuxer_suggest="zlib"
2958 tak_demuxer_select="tak_parser"
2959 tg2_muxer_select="mov_muxer"
2960 tgp_muxer_select="mov_muxer"
2961 vobsub_demuxer_select="mpegps_demuxer"
2962 w64_demuxer_select="wav_demuxer"
2963 w64_muxer_select="wav_muxer"
2964 wav_demuxer_select="riffdec"
2965 wav_muxer_select="riffenc"
2966 webm_muxer_select="iso_media riffenc"
2967 webm_dash_manifest_demuxer_select="matroska_demuxer"
2968 wtv_demuxer_select="mpegts_demuxer riffdec"
2969 wtv_muxer_select="mpegts_muxer riffenc"
2970 xmv_demuxer_select="riffdec"
2971 xwma_demuxer_select="riffdec"
2972
2973 # indevs / outdevs
2974 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2975 alsa_outdev_deps="alsa_asoundlib_h"
2976 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2977 avfoundation_indev_select="avfoundation"
2978 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2979 caca_outdev_deps="libcaca"
2980 decklink_indev_deps="decklink pthreads"
2981 decklink_indev_extralibs="-lstdc++"
2982 decklink_outdev_deps="decklink pthreads"
2983 decklink_outdev_extralibs="-lstdc++"
2984 dshow_indev_deps="IBaseFilter"
2985 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
2986 dv1394_indev_deps="dv1394"
2987 dv1394_indev_select="dv_demuxer"
2988 fbdev_indev_deps="linux_fb_h"
2989 fbdev_outdev_deps="linux_fb_h"
2990 gdigrab_indev_deps="CreateDIBSection"
2991 gdigrab_indev_extralibs="-lgdi32"
2992 gdigrab_indev_select="bmp_decoder"
2993 iec61883_indev_deps="libiec61883"
2994 jack_indev_deps="jack_jack_h"
2995 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2996 lavfi_indev_deps="avfilter"
2997 libcdio_indev_deps="libcdio"
2998 libdc1394_indev_deps="libdc1394"
2999 libv4l2_indev_deps="libv4l2"
3000 openal_indev_deps="openal"
3001 opengl_outdev_deps="opengl"
3002 oss_indev_deps_any="soundcard_h sys_soundcard_h"
3003 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
3004 pulse_indev_deps="libpulse"
3005 pulse_outdev_deps="libpulse"
3006 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
3007 qtkit_indev_select="qtkit"
3008 sdl2_outdev_deps="sdl2"
3009 sndio_indev_deps="sndio_h"
3010 sndio_outdev_deps="sndio_h"
3011 v4l_indev_deps="linux_videodev_h"
3012 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3013 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3014 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
3015 vfwcap_indev_extralibs="-lavicap32"
3016 x11grab_indev_deps="x11grab"
3017 x11grab_xcb_indev_deps="libxcb"
3018 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3019 xv_outdev_extralibs="-lXv -lX11 -lXext"
3020
3021 # protocols
3022 async_protocol_deps="threads"
3023 bluray_protocol_deps="libbluray"
3024 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
3025 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3026 ffrtmpcrypt_protocol_select="tcp_protocol"
3027 ffrtmphttp_protocol_deps="!librtmp_protocol"
3028 ffrtmphttp_protocol_select="http_protocol"
3029 ftp_protocol_select="tcp_protocol"
3030 gopher_protocol_select="network"
3031 http_protocol_select="tcp_protocol"
3032 httpproxy_protocol_select="tcp_protocol"
3033 https_protocol_select="tls_protocol"
3034 icecast_protocol_select="http_protocol"
3035 librtmp_protocol_deps="librtmp"
3036 librtmpe_protocol_deps="librtmp"
3037 librtmps_protocol_deps="librtmp"
3038 librtmpt_protocol_deps="librtmp"
3039 librtmpte_protocol_deps="librtmp"
3040 libsmbclient_protocol_deps="libsmbclient gplv3"
3041 libssh_protocol_deps="libssh"
3042 mmsh_protocol_select="http_protocol"
3043 mmst_protocol_select="network"
3044 rtmp_protocol_deps="!librtmp_protocol"
3045 rtmp_protocol_select="tcp_protocol"
3046 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3047 rtmps_protocol_deps="!librtmp_protocol"
3048 rtmps_protocol_select="tls_protocol"
3049 rtmpt_protocol_select="ffrtmphttp_protocol"
3050 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3051 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3052 rtp_protocol_select="udp_protocol"
3053 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3054 sctp_protocol_select="network"
3055 srtp_protocol_select="rtp_protocol srtp"
3056 tcp_protocol_select="network"
3057 tls_gnutls_protocol_deps="gnutls !tls_schannel_protocol !tls_securetransport_protocol"
3058 tls_gnutls_protocol_select="tcp_protocol"
3059 tls_openssl_protocol_deps="openssl !tls_schannel_protocol !tls_securetransport_protocol !tls_gnutls_protocol"
3060 tls_openssl_protocol_select="tcp_protocol"
3061 tls_schannel_protocol_deps="schannel"
3062 tls_schannel_protocol_select="tcp_protocol"
3063 tls_securetransport_protocol_deps="securetransport"
3064 tls_securetransport_protocol_select="tcp_protocol"
3065 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
3066 udp_protocol_select="network"
3067 udplite_protocol_select="network"
3068 unix_protocol_deps="sys_un_h"
3069 unix_protocol_select="network"
3070
3071 # filters
3072 afftfilt_filter_deps="avcodec"
3073 afftfilt_filter_select="fft"
3074 amovie_filter_deps="avcodec avformat"
3075 aresample_filter_deps="swresample"
3076 ass_filter_deps="libass"
3077 asyncts_filter_deps="avresample"
3078 atempo_filter_deps="avcodec"
3079 atempo_filter_select="rdft"
3080 azmq_filter_deps="libzmq"
3081 blackframe_filter_deps="gpl"
3082 boxblur_filter_deps="gpl"
3083 bs2b_filter_deps="libbs2b"
3084 colormatrix_filter_deps="gpl"
3085 cover_rect_filter_deps="avcodec avformat gpl"
3086 cropdetect_filter_deps="gpl"
3087 delogo_filter_deps="gpl"
3088 deshake_filter_select="pixelutils"
3089 drawtext_filter_deps="libfreetype"
3090 eq_filter_deps="gpl"
3091 fftfilt_filter_deps="avcodec"
3092 fftfilt_filter_select="rdft"
3093 find_rect_filter_deps="avcodec avformat gpl"
3094 firequalizer_filter_deps="avcodec"
3095 firequalizer_filter_select="rdft"
3096 flite_filter_deps="libflite"
3097 framerate_filter_select="pixelutils"
3098 frei0r_filter_deps="frei0r dlopen"
3099 frei0r_src_filter_deps="frei0r dlopen"
3100 fspp_filter_deps="gpl"
3101 geq_filter_deps="gpl"
3102 histeq_filter_deps="gpl"
3103 hqdn3d_filter_deps="gpl"
3104 interlace_filter_deps="gpl"
3105 kerndeint_filter_deps="gpl"
3106 ladspa_filter_deps="ladspa dlopen"
3107 mcdeint_filter_deps="avcodec gpl"
3108 movie_filter_deps="avcodec avformat"
3109 mpdecimate_filter_deps="gpl"
3110 mpdecimate_filter_select="pixelutils"
3111 mptestsrc_filter_deps="gpl"
3112 negate_filter_deps="lut_filter"
3113 nnedi_filter_deps="gpl"
3114 ocr_filter_deps="libtesseract"
3115 ocv_filter_deps="libopencv"
3116 owdenoise_filter_deps="gpl"
3117 pan_filter_deps="swresample"
3118 perspective_filter_deps="gpl"
3119 phase_filter_deps="gpl"
3120 pp7_filter_deps="gpl"
3121 pp_filter_deps="gpl postproc"
3122 pullup_filter_deps="gpl"
3123 removelogo_filter_deps="avcodec avformat swscale"
3124 repeatfields_filter_deps="gpl"
3125 resample_filter_deps="avresample"
3126 rubberband_filter_deps="librubberband"
3127 sab_filter_deps="gpl swscale"
3128 scale2ref_filter_deps="swscale"
3129 scale_filter_deps="swscale"
3130 select_filter_select="pixelutils"
3131 showcqt_filter_deps="avcodec avformat swscale"
3132 showcqt_filter_select="fft"
3133 showfreqs_filter_deps="avcodec"
3134 showfreqs_filter_select="fft"
3135 showspectrum_filter_deps="avcodec"
3136 showspectrum_filter_select="fft"
3137 showspectrumpic_filter_deps="avcodec"
3138 showspectrumpic_filter_select="fft"
3139 smartblur_filter_deps="gpl swscale"
3140 sofalizer_filter_deps="netcdf avcodec"
3141 sofalizer_filter_select="fft"
3142 spectrumsynth_filter_deps="avcodec"
3143 spectrumsynth_filter_select="fft"
3144 spp_filter_deps="gpl avcodec"
3145 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3146 stereo3d_filter_deps="gpl"
3147 subtitles_filter_deps="avformat avcodec libass"
3148 super2xsai_filter_deps="gpl"
3149 pixfmts_super2xsai_test_deps="super2xsai_filter"
3150 tinterlace_filter_deps="gpl"
3151 tinterlace_merge_test_deps="tinterlace_filter"
3152 tinterlace_pad_test_deps="tinterlace_filter"
3153 uspp_filter_deps="gpl avcodec"
3154 vaguedenoiser_filter_deps="gpl"
3155 vidstabdetect_filter_deps="libvidstab"
3156 vidstabtransform_filter_deps="libvidstab"
3157 zmq_filter_deps="libzmq"
3158 zoompan_filter_deps="swscale"
3159 zscale_filter_deps="libzimg"
3160 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3161
3162 # examples
3163 avio_dir_cmd_deps="avformat avutil"
3164 avio_reading_deps="avformat avcodec avutil"
3165 decoding_encoding_example_deps="avcodec avformat avutil"
3166 demuxing_decoding_example_deps="avcodec avformat avutil"
3167 extract_mvs_example_deps="avcodec avformat avutil"
3168 filter_audio_example_deps="avfilter avutil"
3169 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3170 filtering_video_example_deps="avfilter avcodec avformat avutil"
3171 http_multiclient_example_deps="avformat avutil fork"
3172 metadata_example_deps="avformat avutil"
3173 muxing_example_deps="avcodec avformat avutil swscale"
3174 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
3175 remuxing_example_deps="avcodec avformat avutil"
3176 resampling_audio_example_deps="avutil swresample"
3177 scaling_video_example_deps="avutil swscale"
3178 transcode_aac_example_deps="avcodec avformat swresample"
3179 transcoding_example_deps="avfilter avcodec avformat avutil"
3180
3181 # libraries, in linking order
3182 avcodec_deps="avutil"
3183 avdevice_deps="avformat avcodec avutil"
3184 avfilter_deps="avutil"
3185 avformat_deps="avcodec avutil"
3186 avresample_deps="avutil"
3187 postproc_deps="avutil gpl"
3188 swresample_deps="avutil"
3189 swscale_deps="avutil"
3190
3191 # programs
3192 ffmpeg_deps="avcodec avfilter avformat swresample"
3193 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3194                null_filter
3195                setpts_filter trim_filter"
3196 ffplay_deps="avcodec avformat swscale swresample sdl2"
3197 ffplay_libs='$sdl2_libs'
3198 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3199 ffprobe_deps="avcodec avformat"
3200 ffserver_deps="avformat fork sarestart"
3201 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3202
3203 # documentation
3204 podpages_deps="perl"
3205 manpages_deps="perl pod2man"
3206 htmlpages_deps="perl"
3207 htmlpages_deps_any="makeinfo_html texi2html"
3208 txtpages_deps="perl makeinfo"
3209 doc_deps_any="manpages htmlpages podpages txtpages"
3210
3211 # default parameters
3212
3213 logfile="config.log"
3214
3215 # installation paths
3216 prefix_default="/usr/local"
3217 bindir_default='${prefix}/bin'
3218 datadir_default='${prefix}/share/ffmpeg'
3219 docdir_default='${prefix}/share/doc/ffmpeg'
3220 incdir_default='${prefix}/include'
3221 libdir_default='${prefix}/lib'
3222 mandir_default='${prefix}/share/man'
3223
3224 # toolchain
3225 ar_default="ar"
3226 cc_default="gcc"
3227 cxx_default="g++"
3228 host_cc_default="gcc"
3229 cp_f="cp -f"
3230 doxygen_default="doxygen"
3231 install="install"
3232 ln_s_default="ln -s -f"
3233 nm_default="nm -g"
3234 objformat="elf"
3235 pkg_config_default=pkg-config
3236 ranlib_default="ranlib"
3237 strip_default="strip"
3238 version_script='--version-script'
3239 yasmexe_default="yasm"
3240 windres_default="windres"
3241
3242 # OS
3243 target_os_default=$(tolower $(uname -s))
3244 host_os=$target_os_default
3245
3246 # machine
3247 if test "$target_os_default" = aix; then
3248     arch_default=$(uname -p)
3249     strip_default="strip -X32_64"
3250 else
3251     arch_default=$(uname -m)
3252 fi
3253 cpu="generic"
3254 intrinsics="none"
3255
3256 # configurable options
3257 enable $PROGRAM_LIST
3258 enable $DOCUMENT_LIST
3259 enable $EXAMPLE_LIST
3260 enable $(filter_out avresample $LIBRARY_LIST)
3261 enable stripping
3262
3263 enable asm
3264 enable debug
3265 enable doc
3266 enable faan faandct faanidct
3267 enable optimizations
3268 enable runtime_cpudetect
3269 enable safe_bitstream_reader
3270 enable static
3271 enable swscale_alpha
3272 enable valgrind_backtrace
3273
3274 sws_max_filter_size_default=256
3275 set_default sws_max_filter_size
3276
3277 # build settings
3278 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3279 LIBPREF="lib"
3280 LIBSUF=".a"
3281 FULLNAME='$(NAME)$(BUILDSUF)'
3282 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3283 SLIBPREF="lib"
3284 SLIBSUF=".so"
3285 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3286 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3287 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3288 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3289 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3290 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3291 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3292
3293 asflags_filter=echo
3294 cflags_filter=echo
3295 ldflags_filter=echo
3296
3297 AS_C='-c'
3298 AS_O='-o $@'
3299 CC_C='-c'
3300 CC_E='-E -o $@'
3301 CC_O='-o $@'
3302 CXX_C='-c'
3303 CXX_O='-o $@'
3304 OBJCC_C='-c'
3305 OBJCC_E='-E -o $@'
3306 OBJCC_O='-o $@'
3307 LD_O='-o $@'
3308 LD_LIB='-l%'
3309 LD_PATH='-L'
3310 HOSTCC_C='-c'
3311 HOSTCC_E='-E -o $@'
3312 HOSTCC_O='-o $@'
3313 HOSTLD_O='-o $@'
3314
3315 host_libs='-lm'
3316 host_cflags_filter=echo
3317 host_ldflags_filter=echo
3318
3319 target_path='$(CURDIR)'
3320
3321 # since the object filename is not given with the -MM flag, the compiler
3322 # is only able to print the basename, and we must add the path ourselves
3323 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3324 DEPFLAGS='-MM'
3325
3326 # find source path
3327 if test -f configure; then
3328     source_path=.
3329 else
3330     source_path=$(cd $(dirname "$0"); pwd)
3331     case "$source_path" in
3332         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3333     esac
3334     test -e "$source_path/config.h" &&
3335         die "Out of tree builds are impossible with config.h in source dir."
3336 fi
3337
3338 for v in "$@"; do
3339     r=${v#*=}
3340     l=${v%"$r"}
3341     r=$(sh_quote "$r")
3342     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3343 done
3344
3345 find_things(){
3346     thing=$1
3347     pattern=$2
3348     file=$source_path/$3
3349     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3350 }
3351
3352 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3353 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3354 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3355 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3356 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3357 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3358 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3359 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3360 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3361
3362 find_things_extern(){
3363     thing=$1
3364     pattern=$2
3365     file=$source_path/$3
3366     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3367 }
3368
3369 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3370 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3371
3372 ALL_COMPONENTS="
3373     $BSF_LIST
3374     $DECODER_LIST
3375     $DEMUXER_LIST
3376     $ENCODER_LIST
3377     $FILTER_LIST
3378     $HWACCEL_LIST
3379     $INDEV_LIST
3380     $MUXER_LIST
3381     $OUTDEV_LIST
3382     $PARSER_LIST
3383     $PROTOCOL_LIST
3384 "
3385
3386 for n in $COMPONENT_LIST; do
3387     v=$(toupper ${n%s})_LIST
3388     eval enable \$$v
3389     eval ${n}_if_any="\$$v"
3390 done
3391
3392 enable $ARCH_EXT_LIST
3393
3394 die_unknown(){
3395     echo "Unknown option \"$1\"."
3396     echo "See $0 --help for available options."
3397     exit 1
3398 }
3399
3400 print_in_columns() {
3401     cols=$(expr $ncols / 24)
3402     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3403 }
3404
3405 show_list() {
3406     suffix=_$1
3407     shift
3408     echo $* | sed s/$suffix//g | print_in_columns
3409     exit 0
3410 }
3411
3412 rand_list(){
3413     IFS=', '
3414     set -- $*
3415     unset IFS
3416     for thing; do
3417         comp=${thing%:*}
3418         prob=${thing#$comp}
3419         prob=${prob#:}
3420         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3421         echo "prob ${prob:-0.5}"
3422         printf '%s\n' $comp
3423     done
3424 }
3425
3426 do_random(){
3427     action=$1
3428     shift
3429     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3430     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3431 }
3432
3433 for opt do
3434     optval="${opt#*=}"
3435     case "$opt" in
3436         --extra-ldflags=*)
3437             add_ldflags $optval
3438         ;;
3439         --extra-ldexeflags=*)
3440             add_ldexeflags $optval
3441         ;;
3442         --extra-ldlibflags=*)
3443             add_ldlibflags $optval
3444         ;;
3445         --extra-libs=*)
3446             add_extralibs $optval
3447         ;;
3448         --disable-devices)
3449             disable $INDEV_LIST $OUTDEV_LIST
3450         ;;
3451         --enable-debug=*)
3452             debuglevel="$optval"
3453         ;;
3454         --disable-programs)
3455             disable $PROGRAM_LIST
3456         ;;
3457         --disable-everything)
3458             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3459         ;;
3460         --disable-all)
3461             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3462             disable $LIBRARY_LIST $PROGRAM_LIST doc
3463             enable avutil
3464         ;;
3465         --enable-random|--disable-random)
3466             action=${opt%%-random}
3467             do_random ${action#--} $COMPONENT_LIST
3468         ;;
3469         --enable-random=*|--disable-random=*)
3470             action=${opt%%-random=*}
3471             do_random ${action#--} $optval
3472         ;;
3473         --enable-*=*|--disable-*=*)
3474             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3475             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3476             eval list=\$$(toupper $thing)_LIST
3477             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3478             list=$(filter "$name" $list)
3479             [ "$list" = "" ] && warn "Option $opt did not match anything"
3480             $action $list
3481         ;;
3482         --enable-?*|--disable-?*)
3483             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3484             if is_in $option $COMPONENT_LIST; then
3485                 test $action = disable && action=unset
3486                 eval $action \$$(toupper ${option%s})_LIST
3487             elif is_in $option $CMDLINE_SELECT; then
3488                 $action $option
3489             else
3490                 die_unknown $opt
3491             fi
3492         ;;
3493         --list-*)
3494             NAME="${opt#--list-}"
3495             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3496             NAME=${NAME%s}
3497             eval show_list $NAME \$$(toupper $NAME)_LIST
3498         ;;
3499         --help|-h) show_help
3500         ;;
3501         --fatal-warnings) enable fatal_warnings
3502         ;;
3503         *)
3504             optname="${opt%%=*}"
3505             optname="${optname#--}"
3506             optname=$(echo "$optname" | sed 's/-/_/g')
3507             if is_in $optname $CMDLINE_SET; then
3508                 eval $optname='$optval'
3509             elif is_in $optname $CMDLINE_APPEND; then
3510                 append $optname "$optval"
3511             else
3512                 die_unknown $opt
3513             fi
3514         ;;
3515     esac
3516 done
3517
3518 for e in $env; do
3519     eval "export $e"
3520 done
3521
3522 # Mark specifically enabled, but normally autodetected libraries as requested.
3523 for lib in $AUTODETECT_LIBS; do
3524     enabled $lib && request $lib
3525 done
3526
3527 # Enable platform codecs by default.
3528 enable_weak audiotoolbox
3529
3530 # Enable hwaccels by default.
3531 enable_weak d3d11va dxva2 vaapi vda vdpau videotoolbox_hwaccel xvmc
3532 enable_weak xlib
3533
3534 enable_weak cuda cuvid nvenc vda_framework videotoolbox videotoolbox_encoder
3535
3536 disabled logging && logfile=/dev/null
3537
3538 # Disable all the library-specific components if the library itself
3539 # is disabled, see AVCODEC_LIST and following _LIST variables.
3540
3541 disable_components(){
3542     disabled ${1} && disable $(
3543         eval components="\$$(toupper ${1})_COMPONENTS"
3544         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3545     )
3546 }
3547
3548 map 'disable_components $v' $LIBRARY_LIST
3549
3550 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3551 set >> $logfile
3552
3553 test -n "$valgrind" && toolchain="valgrind-memcheck"
3554
3555 case "$toolchain" in
3556     *-asan)
3557         cc_default="${toolchain%-asan}"
3558         add_cflags  -fsanitize=address
3559         add_ldflags -fsanitize=address
3560     ;;
3561     *-msan)
3562         cc_default="${toolchain%-msan}"
3563         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3564         add_ldflags -fsanitize=memory
3565     ;;
3566     *-tsan)
3567         cc_default="${toolchain%-tsan}"
3568         add_cflags  -fsanitize=thread -fPIE
3569         add_ldflags -fsanitize=thread -pie
3570         case "$toolchain" in
3571             gcc-tsan)
3572                 add_cflags  -fPIC
3573                 add_ldflags -fPIC
3574                 ;;
3575         esac
3576     ;;
3577     *-usan)
3578         cc_default="${toolchain%-usan}"
3579         add_cflags  -fsanitize=undefined
3580         add_ldflags -fsanitize=undefined
3581     ;;
3582     valgrind-*)
3583         target_exec_default="valgrind"
3584         case "$toolchain" in
3585             valgrind-massif)
3586                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3587                 ;;
3588             valgrind-memcheck)
3589                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3590                 ;;
3591         esac
3592     ;;
3593     msvc)
3594         # Check whether the current MSVC version needs the C99 converter.
3595         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3596         # support enough of C99 to build ffmpeg. Default to the new
3597         # behaviour if the regexp was unable to match anything, since this
3598         # successfully parses the version number of existing supported
3599         # versions that require the converter (MSVC 2010 and 2012).
3600         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3601         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3602             cc_default="cl"
3603         else
3604             cc_default="c99wrap cl"
3605         fi
3606         ld_default="$source_path/compat/windows/mslink"
3607         nm_default="dumpbin -symbols"
3608         ar_default="lib"
3609         case "$arch" in
3610         arm*)
3611             as_default="armasm"
3612             ;;
3613         esac
3614         target_os_default="win32"
3615         # Use a relative path for TMPDIR. This makes sure all the
3616         # ffconf temp files are written with a relative path, avoiding
3617         # issues with msys/win32 path conversion for MSVC parameters
3618         # such as -Fo<file> or -out:<file>.
3619         TMPDIR=.
3620     ;;
3621     icl)
3622         cc_default="icl"
3623         ld_default="xilink"
3624         nm_default="dumpbin -symbols"
3625         ar_default="xilib"
3626         target_os_default="win32"
3627         TMPDIR=.
3628     ;;
3629     gcov)
3630         add_cflags  -fprofile-arcs -ftest-coverage
3631         add_ldflags -fprofile-arcs -ftest-coverage
3632     ;;
3633     llvm-cov)
3634         add_cflags -fprofile-arcs -ftest-coverage
3635         add_ldflags --coverage
3636     ;;
3637     hardened)
3638         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3639         add_cflags   -fno-strict-overflow -fstack-protector-all
3640         add_ldflags  -Wl,-z,relro -Wl,-z,now
3641         add_cflags   -fPIE
3642         add_ldexeflags -fPIE -pie
3643     ;;
3644     ?*)
3645         die "Unknown toolchain $toolchain"
3646     ;;
3647 esac
3648
3649 test -n "$cross_prefix" && enable cross_compile
3650
3651 if enabled cross_compile; then
3652     test -n "$arch" && test -n "$target_os" ||
3653         die "Must specify target arch and OS when cross-compiling"
3654 fi
3655
3656 ar_default="${cross_prefix}${ar_default}"
3657 cc_default="${cross_prefix}${cc_default}"
3658 cxx_default="${cross_prefix}${cxx_default}"
3659 nm_default="${cross_prefix}${nm_default}"
3660 pkg_config_default="${cross_prefix}${pkg_config_default}"
3661 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3662     ranlib_default="${cross_prefix}${ranlib_default} -D"
3663 else
3664     ranlib_default="${cross_prefix}${ranlib_default}"
3665 fi
3666 strip_default="${cross_prefix}${strip_default}"
3667 windres_default="${cross_prefix}${windres_default}"
3668
3669 sysinclude_default="${sysroot}/usr/include"
3670
3671 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3672     target_exec target_os yasmexe
3673 enabled cross_compile || host_cc_default=$cc
3674 set_default host_cc
3675
3676 pkg_config_fail_message=""
3677 if ! $pkg_config --version >/dev/null 2>&1; then
3678     warn "$pkg_config not found, library detection may fail."
3679     pkg_config=false
3680 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3681     pkg_config_fail_message="
3682 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3683 fi
3684
3685 if test $doxygen != $doxygen_default && \
3686   ! $doxygen --version >/dev/null 2>&1; then
3687     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3688 fi
3689
3690 exesuf() {
3691     case $1 in
3692         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3693     esac
3694 }
3695
3696 EXESUF=$(exesuf $target_os)
3697 HOSTEXESUF=$(exesuf $host_os)
3698
3699 # set temporary file name
3700 : ${TMPDIR:=$TEMPDIR}
3701 : ${TMPDIR:=$TMP}
3702 : ${TMPDIR:=/tmp}
3703
3704 if [ -n "$tempprefix" ] ; then
3705     mktemp(){
3706         echo $tempprefix.${HOSTNAME}.${UID}
3707     }
3708 elif ! check_cmd mktemp -u XXXXXX; then
3709     # simple replacement for missing mktemp
3710     # NOT SAFE FOR GENERAL USE
3711     mktemp(){
3712         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3713     }
3714 fi
3715
3716 tmpfile(){
3717     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3718         (set -C; exec > $tmp) 2>/dev/null ||
3719         die "Unable to create temporary file in $TMPDIR."
3720     append TMPFILES $tmp
3721     eval $1=$tmp
3722 }
3723
3724 trap 'rm -f -- $TMPFILES' EXIT
3725
3726 tmpfile TMPASM .asm
3727 tmpfile TMPC   .c
3728 tmpfile TMPCPP .cpp
3729 tmpfile TMPE   $EXESUF
3730 tmpfile TMPH   .h
3731 tmpfile TMPM   .m
3732 tmpfile TMPO   .o
3733 tmpfile TMPS   .S
3734 tmpfile TMPSH  .sh
3735 tmpfile TMPV   .ver
3736
3737 unset -f mktemp
3738
3739 chmod +x $TMPE
3740
3741 # make sure we can execute files in $TMPDIR
3742 cat > $TMPSH 2>> $logfile <<EOF
3743 #! /bin/sh
3744 EOF
3745 chmod +x $TMPSH >> $logfile 2>&1
3746 if ! $TMPSH >> $logfile 2>&1; then
3747     cat <<EOF
3748 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3749 variable to another directory and make sure that it is not mounted noexec.
3750 EOF
3751     die "Sanity test failed."
3752 fi
3753
3754 armasm_flags(){
3755     for flag; do
3756         case $flag in
3757             # Filter out MSVC cl.exe options from cflags that shouldn't
3758             # be passed to gas-preprocessor
3759             -M[TD]*)                                            ;;
3760             *)                  echo $flag                      ;;
3761         esac
3762    done
3763 }
3764
3765 ccc_flags(){
3766     for flag; do
3767         case $flag in
3768             -std=c99)           echo -c99                       ;;
3769             -mcpu=*)            echo -arch ${flag#*=}           ;;
3770             -mieee)             echo -ieee                      ;;
3771             -O*|-fast)          echo $flag                      ;;
3772             -fno-math-errno)    echo -assume nomath_errno       ;;
3773             -g)                 echo -g3                        ;;
3774             -Wall)              echo -msg_enable level2         ;;
3775             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3776             -Wl,*)              echo $flag                      ;;
3777             -f*|-W*)                                            ;;
3778             *)                  echo $flag                      ;;
3779         esac
3780    done
3781 }
3782
3783 cparser_flags(){
3784     for flag; do
3785         case $flag in
3786             -Wno-switch)             echo -Wno-switch-enum ;;
3787             -Wno-format-zero-length) ;;
3788             -Wdisabled-optimization) ;;
3789             -Wno-pointer-sign)       echo -Wno-other ;;
3790             *)                       echo $flag ;;
3791         esac
3792     done
3793 }
3794
3795 msvc_common_flags(){
3796     for flag; do
3797         case $flag in
3798             # In addition to specifying certain flags under the compiler
3799             # specific filters, they must be specified here as well or else the
3800             # generic catch all at the bottom will print the original flag.
3801             -Wall)                ;;
3802             -std=c99)             ;;
3803             # Common flags
3804             -fomit-frame-pointer) ;;
3805             -g)                   echo -Z7 ;;
3806             -fno-math-errno)      ;;
3807             -fno-common)          ;;
3808             -fno-signed-zeros)    ;;
3809             -fPIC)                ;;
3810             -mthumb)              ;;
3811             -march=*)             ;;
3812             -lz)                  echo zlib.lib ;;
3813             -lavifil32)           echo vfw32.lib ;;
3814             -lavicap32)           echo vfw32.lib user32.lib ;;
3815             -lx264)               echo libx264.lib ;;
3816             -l*)                  echo ${flag#-l}.lib ;;
3817             -LARGEADDRESSAWARE)   echo $flag ;;
3818             -L*)                  echo -libpath:${flag#-L} ;;
3819             *)                    echo $flag ;;
3820         esac
3821     done
3822 }
3823
3824 msvc_flags(){
3825     msvc_common_flags "$@"
3826     for flag; do
3827         case $flag in
3828             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3829                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3830                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3831                                        -wd4307 \
3832                                        -wd4273 -wd4554 -wd4701 ;;
3833         esac
3834     done
3835 }
3836
3837 icl_flags(){
3838     msvc_common_flags "$@"
3839     for flag; do
3840         case $flag in
3841             # Despite what Intel's documentation says -Wall, which is supported
3842             # on Windows, does enable remarks so disable them here.
3843             -Wall)                echo $flag -Qdiag-disable:remark ;;
3844             -std=c99)             echo -Qstd=c99 ;;
3845             -flto)                echo -ipo ;;
3846         esac
3847     done
3848 }
3849
3850 icc_flags(){
3851     for flag; do
3852         case $flag in
3853             -flto)                echo -ipo ;;
3854             *)                    echo $flag ;;
3855         esac
3856     done
3857 }
3858
3859 pgi_flags(){
3860     for flag; do
3861         case $flag in
3862             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3863             -fomit-frame-pointer) echo -Mnoframe ;;
3864             -g)                   echo -gopt ;;
3865             *)                    echo $flag ;;
3866         esac
3867     done
3868 }
3869
3870 suncc_flags(){
3871     for flag; do
3872         case $flag in
3873             -march=*|-mcpu=*)
3874                 case "${flag#*=}" in
3875                     native)                   echo -xtarget=native       ;;
3876                     v9|niagara)               echo -xarch=sparc          ;;
3877                     ultrasparc)               echo -xarch=sparcvis       ;;
3878                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3879                     i586|pentium)             echo -xchip=pentium        ;;
3880                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3881                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3882                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3883                     pentium4*)          echo -xtarget=pentium4           ;;
3884                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3885                     *-sse3)             echo -xarch=sse3                 ;;
3886                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3887                     bonnell)                   echo -xarch=ssse3         ;;
3888                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3889                     westmere)                  echo -xtarget=westmere    ;;
3890                     silvermont)                echo -xarch=sse4_2        ;;
3891                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3892                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
3893                                                echo -xarch=avx           ;;
3894                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3895                     btver1)                    echo -xarch=amdsse4a      ;;
3896                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
3897                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3898                     k8|opteron|athlon64|athlon-fx)
3899                                                echo -xarch=sse2a         ;;
3900                     athlon*)                   echo -xarch=pentium_proa  ;;
3901                 esac
3902                 ;;
3903             -std=c99)             echo -xc99              ;;
3904             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3905             -fPIC)                echo -KPIC -xcode=pic32 ;;
3906             -W*,*)                echo $flag              ;;
3907             -f*-*|-W*|-mimpure-text)                      ;;
3908             -shared)              echo -G                 ;;
3909             *)                    echo $flag              ;;
3910         esac
3911     done
3912 }
3913
3914 tms470_flags(){
3915     for flag; do
3916         case $flag in
3917             -march=*|-mcpu=*)
3918                 case "${flag#*=}" in
3919                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3920                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3921                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3922                     armv6*|arm11*)          echo -mv=6   ;;
3923                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3924                                             echo -mv=5e  ;;
3925                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3926                 esac
3927                 ;;
3928             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3929             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3930             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3931             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3932             -msoft-float)   echo --float_support=vfplib       ;;
3933             -O[0-3]|-mf=*)  echo $flag                        ;;
3934             -g)             echo -g -mn                       ;;
3935             -pds=*)         echo $flag                        ;;
3936             -D*|-I*)        echo $flag                        ;;
3937             --gcc|--abi=*)  echo $flag                        ;;
3938             -me)            echo $flag                        ;;
3939         esac
3940     done
3941 }
3942
3943 probe_cc(){
3944     pfx=$1
3945     _cc=$2
3946     first=$3
3947
3948     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3949     unset _ld_o _ldflags _ld_lib _ld_path
3950     unset _depflags _DEPCMD _DEPFLAGS
3951     _flags_filter=echo
3952
3953     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3954         true # no-op to avoid reading stdin in following checks
3955     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3956         _type=llvm_gcc
3957         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3958         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3959         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3960         _cflags_speed='-O3'
3961         _cflags_size='-Os'
3962     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3963         _type=gcc
3964         gcc_version=$($_cc --version | head -n1)
3965         gcc_basever=$($_cc -dumpversion)
3966         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3967         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3968         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3969         case $gcc_basever in
3970             2) ;;
3971             2.*) ;;
3972             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
3973         esac
3974         if [ "$first" = true ]; then
3975             case $gcc_basever in
3976                 4.2*)
3977                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
3978             esac
3979         fi
3980         _cflags_speed='-O3'
3981         _cflags_size='-Os'
3982     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3983         _type=icc
3984         _ident=$($_cc --version | head -n1)
3985         _depflags='-MMD'
3986         _cflags_speed='-O3'
3987         _cflags_size='-Os'
3988         _cflags_noopt='-O1'
3989         _flags_filter=icc_flags
3990     elif $_cc -v 2>&1 | grep -q xlc; then
3991         _type=xlc
3992         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3993         _cflags_speed='-O5'
3994         _cflags_size='-O5 -qcompact'
3995     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3996         _type=ccc
3997         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3998         _DEPFLAGS='-M'
3999         _cflags_speed='-fast'
4000         _cflags_size='-O1'
4001         _flags_filter=ccc_flags
4002     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4003         test -d "$sysroot" || die "No valid sysroot specified."
4004         _type=armcc
4005         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4006         armcc_conf="$PWD/armcc.conf"
4007         $_cc --arm_linux_configure                 \
4008              --arm_linux_config_file="$armcc_conf" \
4009              --configure_sysroot="$sysroot"        \
4010              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4011              die "Error creating armcc configuration file."
4012         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4013         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4014         as_default="${cross_prefix}gcc"
4015         _depflags='-MMD'
4016         _cflags_speed='-O3'
4017         _cflags_size='-Os'
4018     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
4019         _type=tms470
4020         _ident=$($_cc -version | head -n1 | tr -s ' ')
4021         _flags='--gcc --abi=eabi -me'
4022         _cc_e='-ppl -fe=$@'
4023         _cc_o='-fe=$@'
4024         _depflags='-ppa -ppd=$(@:.o=.d)'
4025         _cflags_speed='-O3 -mf=5'
4026         _cflags_size='-O3 -mf=2'
4027         _flags_filter=tms470_flags
4028     elif $_cc -v 2>&1 | grep -q clang; then
4029         _type=clang
4030         _ident=$($_cc --version 2>/dev/null | head -n1)
4031         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4032         _cflags_speed='-O3'
4033         _cflags_size='-Os'
4034     elif $_cc -V 2>&1 | grep -q Sun; then
4035         _type=suncc
4036         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4037         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4038         _DEPFLAGS='-xM1 -xc99'
4039         _ldflags='-std=c99'
4040         _cflags_speed='-O5'
4041         _cflags_size='-O5 -xspace'
4042         _flags_filter=suncc_flags
4043     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4044         _type=pathscale
4045         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4046         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4047         _cflags_speed='-O2'
4048         _cflags_size='-Os'
4049         _flags_filter='filter_out -Wdisabled-optimization'
4050     elif $_cc -v 2>&1 | grep -q Open64; then
4051         _type=open64
4052         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4053         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4054         _cflags_speed='-O2'
4055         _cflags_size='-Os'
4056         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4057     elif $_cc -V 2>&1 | grep -q Portland; then
4058         _type=pgi
4059         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
4060         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
4061         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
4062         _cflags_size="-O2 -Munroll=c:1 $opt_common"
4063         _cflags_noopt="-O"
4064         _flags_filter=pgi_flags
4065     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4066         _type=armasm
4067         _ident=$($_cc | head -n1)
4068         # 4509: "This form of conditional instruction is deprecated"
4069         _flags="-nologo -ignore 4509"
4070         _flags_filter=armasm_flags
4071     elif $_cc 2>&1 | grep -q Intel; then
4072         _type=icl
4073         _ident=$($_cc 2>&1 | head -n1)
4074         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4075         # Not only is O3 broken on 13.x+ but it is slower on all previous
4076         # versions (tested) as well.
4077         _cflags_speed="-O2"
4078         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4079         if $_cc 2>&1 | grep -q Linker; then
4080             _ld_o='-out:$@'
4081         else
4082             _ld_o='-Fe$@'
4083         fi
4084         _cc_o='-Fo$@'
4085         _cc_e='-P'
4086         _flags_filter=icl_flags
4087         _ld_lib='lib%.a'
4088         _ld_path='-libpath:'
4089         # -Qdiag-error to make icl error when seeing certain unknown arguments
4090         _flags='-nologo -Qdiag-error:4044,10157'
4091         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4092         # with MSVC which enables it by default.
4093         _cflags='-D_USE_MATH_DEFINES -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4094         disable stripping
4095     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4096         _type=msvc
4097         _ident=$($_cc 2>&1 | head -n1)
4098         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4099         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4100         _cflags_speed="-O2"
4101         _cflags_size="-O1"
4102         if $_cc -nologo- 2>&1 | grep -q Linker; then
4103             _ld_o='-out:$@'
4104         else
4105             _ld_o='-Fe$@'
4106         fi
4107         _cc_o='-Fo$@'
4108         _cc_e='-P -Fi$@'
4109         _flags_filter=msvc_flags
4110         _ld_lib='lib%.a'
4111         _ld_path='-libpath:'
4112         _flags='-nologo'
4113         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS'
4114         disable stripping
4115     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4116         _type=cparser
4117         _ident=$($_cc --version | head -n1)
4118         _depflags='-MMD'
4119         _cflags_speed='-O4'
4120         _cflags_size='-O2'
4121         _flags_filter=cparser_flags
4122     fi
4123
4124     eval ${pfx}_type=\$_type
4125     eval ${pfx}_ident=\$_ident
4126 }
4127
4128 set_ccvars(){
4129     eval ${1}_C=\${_cc_c-\${${1}_C}}
4130     eval ${1}_E=\${_cc_e-\${${1}_E}}
4131     eval ${1}_O=\${_cc_o-\${${1}_O}}
4132
4133     if [ -n "$_depflags" ]; then
4134         eval ${1}_DEPFLAGS=\$_depflags
4135     else
4136         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4137         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4138         eval DEP${1}FLAGS=\$_flags
4139     fi
4140 }
4141
4142 probe_cc cc "$cc" "true"
4143 cflags_filter=$_flags_filter
4144 cflags_speed=$_cflags_speed
4145 cflags_size=$_cflags_size
4146 cflags_noopt=$_cflags_noopt
4147 add_cflags $_flags $_cflags
4148 cc_ldflags=$_ldflags
4149 set_ccvars CC
4150
4151 probe_cc hostcc "$host_cc"
4152 host_cflags_filter=$_flags_filter
4153 add_host_cflags  $_flags $_cflags
4154 set_ccvars HOSTCC
4155
4156 test -n "$cc_type" && enable $cc_type ||
4157     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4158
4159 : ${as_default:=$cc}
4160 : ${objcc_default:=$cc}
4161 : ${dep_cc_default:=$cc}
4162 : ${ld_default:=$cc}
4163 : ${host_ld_default:=$host_cc}
4164 set_default ar as objcc dep_cc ld ln_s host_ld windres
4165
4166 probe_cc as "$as"
4167 asflags_filter=$_flags_filter
4168 add_asflags $_flags $_cflags
4169 set_ccvars AS
4170
4171 probe_cc objcc "$objcc"
4172 objcflags_filter=$_flags_filter
4173 add_objcflags $_flags $_cflags
4174 set_ccvars OBJC
4175
4176 probe_cc ld "$ld"
4177 ldflags_filter=$_flags_filter
4178 add_ldflags $_flags $_ldflags
4179 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4180 LD_O=${_ld_o-$LD_O}
4181 LD_LIB=${_ld_lib-$LD_LIB}
4182 LD_PATH=${_ld_path-$LD_PATH}
4183
4184 probe_cc hostld "$host_ld"
4185 host_ldflags_filter=$_flags_filter
4186 add_host_ldflags $_flags $_ldflags
4187 HOSTLD_O=${_ld_o-$HOSTLD_O}
4188
4189 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4190     probe_cc depcc "$dep_cc"
4191     CCDEP=${_DEPCMD:-$DEPCMD}
4192     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4193     DEPCCFLAGS=$_flags
4194 fi
4195
4196 if $ar 2>&1 | grep -q Microsoft; then
4197     arflags="-nologo"
4198     ar_o='-out:$@'
4199 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
4200     arflags="rq"
4201     ar_o='$@'
4202 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
4203     arflags='-Xany -r -c'
4204     ar_o='$@'
4205 elif $ar 2>&1 | grep -q "\[D\] "; then
4206     arflags="rcD"
4207     ar_o='$@'
4208 else
4209     arflags="rc"
4210     ar_o='$@'
4211 fi
4212
4213 add_cflags $extra_cflags
4214 add_cxxflags $extra_cxxflags
4215 add_objcflags $extra_objcflags
4216 add_asflags $extra_cflags
4217
4218 if test -n "$sysroot"; then
4219     case "$cc_type" in
4220         gcc|llvm_gcc|clang)
4221             add_cppflags --sysroot="$sysroot"
4222             add_ldflags --sysroot="$sysroot"
4223 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
4224             add_cppflags -isysroot "$sysroot"
4225             add_ldflags -isysroot "$sysroot"
4226         ;;
4227         tms470)
4228             add_cppflags -I"$sysinclude"
4229             add_ldflags  --sysroot="$sysroot"
4230         ;;
4231     esac
4232 fi
4233
4234 if test "$cpu" = host; then
4235     enabled cross_compile &&
4236         die "--cpu=host makes no sense when cross-compiling."
4237
4238     case "$cc_type" in
4239         gcc|llvm_gcc)
4240             check_native(){
4241                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4242                 sed -n "/cc1.*$1=/{
4243                             s/.*$1=\\([^ ]*\\).*/\\1/
4244                             p
4245                             q
4246                         }" $TMPE
4247             }
4248             cpu=$(check_native -march || check_native -mcpu)
4249         ;;
4250         clang)
4251             check_native(){
4252                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4253                 sed -n "/cc1.*-target-cpu /{
4254                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4255                             p
4256                             q
4257                         }" $TMPE
4258             }
4259             cpu=$(check_native -march)
4260         ;;
4261     esac
4262
4263     test "${cpu:-host}" = host &&
4264         die "--cpu=host not supported with compiler $cc"
4265 fi
4266
4267 # Deal with common $arch aliases
4268 case "$arch" in
4269     aarch64|arm64)
4270         arch="aarch64"
4271     ;;
4272     arm*|iPad*|iPhone*)
4273         arch="arm"
4274     ;;
4275     mips*|IP*)
4276         case "$arch" in
4277         *el)
4278             add_cppflags -EL
4279             add_ldflags -EL
4280         ;;
4281         *eb)
4282             add_cppflags -EB
4283             add_ldflags -EB
4284         ;;
4285         esac
4286         arch="mips"
4287     ;;
4288     parisc*|hppa*)
4289         arch="parisc"
4290     ;;
4291     "Power Macintosh"|ppc*|powerpc*)
4292         arch="ppc"
4293     ;;
4294     s390|s390x)
4295         arch="s390"
4296     ;;
4297     sh4|sh)
4298         arch="sh4"
4299     ;;
4300     sun4*|sparc*)
4301         arch="sparc"
4302     ;;
4303     tilegx|tile-gx)
4304         arch="tilegx"
4305     ;;
4306     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4307         arch="x86"
4308     ;;
4309 esac
4310
4311 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4312 enable $arch
4313
4314 # Add processor-specific flags
4315 if enabled aarch64; then
4316
4317     case $cpu in
4318         armv*)
4319             cpuflags="-march=$cpu"
4320         ;;
4321         *)
4322             cpuflags="-mcpu=$cpu"
4323         ;;
4324     esac
4325
4326 elif enabled alpha; then
4327
4328     cpuflags="-mcpu=$cpu"
4329
4330 elif enabled arm; then
4331
4332     check_arm_arch() {
4333         check_cpp_condition stddef.h \
4334             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4335             $cpuflags
4336     }
4337
4338     probe_arm_arch() {
4339         if   check_arm_arch 4;        then echo armv4
4340         elif check_arm_arch 4T;       then echo armv4t
4341         elif check_arm_arch 5;        then echo armv5
4342         elif check_arm_arch 5E;       then echo armv5e
4343         elif check_arm_arch 5T;       then echo armv5t
4344         elif check_arm_arch 5TE;      then echo armv5te
4345         elif check_arm_arch 5TEJ;     then echo armv5te
4346         elif check_arm_arch 6;        then echo armv6
4347         elif check_arm_arch 6J;       then echo armv6j
4348         elif check_arm_arch 6K;       then echo armv6k
4349         elif check_arm_arch 6Z;       then echo armv6z
4350         elif check_arm_arch 6ZK;      then echo armv6zk
4351         elif check_arm_arch 6T2;      then echo armv6t2
4352         elif check_arm_arch 7;        then echo armv7
4353         elif check_arm_arch 7A  7_A;  then echo armv7-a
4354         elif check_arm_arch 7S;       then echo armv7-a
4355         elif check_arm_arch 7R  7_R;  then echo armv7-r
4356         elif check_arm_arch 7M  7_M;  then echo armv7-m
4357         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4358         elif check_arm_arch 8A  8_A;  then echo armv8-a
4359         fi
4360     }
4361
4362     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4363
4364     case $cpu in
4365         armv*)
4366             cpuflags="-march=$cpu"
4367             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4368         ;;
4369         *)
4370             cpuflags="-mcpu=$cpu"
4371             case $cpu in
4372                 cortex-a*)                               subarch=armv7a  ;;
4373                 cortex-r*)                               subarch=armv7r  ;;
4374                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4375                 arm11*)                                  subarch=armv6   ;;
4376                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4377                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4378                 *)                             subarch=$(probe_arm_arch) ;;
4379             esac
4380         ;;
4381     esac
4382
4383     case "$subarch" in
4384         armv5t*)    enable fast_clz                ;;
4385         armv[6-8]*)
4386             enable fast_clz
4387             disabled fast_unaligned || enable fast_unaligned
4388             ;;
4389     esac
4390
4391 elif enabled avr32; then
4392
4393     case $cpu in
4394         ap7[02]0[0-2])
4395             subarch="avr32_ap"
4396             cpuflags="-mpart=$cpu"
4397         ;;
4398         ap)
4399             subarch="avr32_ap"
4400             cpuflags="-march=$cpu"
4401         ;;
4402         uc3[ab]*)
4403             subarch="avr32_uc"
4404             cpuflags="-mcpu=$cpu"
4405         ;;
4406         uc)
4407             subarch="avr32_uc"
4408             cpuflags="-march=$cpu"
4409         ;;
4410     esac
4411
4412 elif enabled bfin; then
4413
4414     cpuflags="-mcpu=$cpu"
4415
4416 elif enabled mips; then
4417
4418     cpuflags="-march=$cpu"
4419
4420     if [ "$cpu" != "generic" ]; then
4421         disable mips32r2
4422         disable mips32r5
4423         disable mips64r2
4424         disable mips32r6
4425         disable mips64r6
4426         disable loongson2
4427         disable loongson3
4428
4429         case $cpu in
4430             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4431                 enable mips32r2
4432                 disable msa
4433             ;;
4434             p5600|i6400|p6600)
4435                 disable mipsdsp
4436                 disable mipsdspr2
4437             ;;
4438             loongson*)
4439                 enable loongson2
4440                 enable loongson3
4441                 enable local_aligned_8 local_aligned_16 local_aligned_32
4442                 enable simd_align_16
4443                 enable fast_64bit
4444                 enable fast_clz
4445                 enable fast_cmov
4446                 enable fast_unaligned
4447                 disable aligned_stack
4448                 disable mipsfpu
4449                 disable mipsdsp
4450                 disable mipsdspr2
4451                 case $cpu in
4452                     loongson3*)
4453                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4454                     ;;
4455                     loongson2e)
4456                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4457                     ;;
4458                     loongson2f)
4459                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4460                     ;;
4461                 esac
4462             ;;
4463             *)
4464                 # Unknown CPU. Disable everything.
4465                 warn "unknown CPU. Disabling all MIPS optimizations."
4466                 disable mipsfpu
4467                 disable mipsdsp
4468                 disable mipsdspr2
4469                 disable msa
4470                 disable mmi
4471             ;;
4472         esac
4473
4474         case $cpu in
4475             24kc)
4476                 disable mipsfpu
4477                 disable mipsdsp
4478                 disable mipsdspr2
4479             ;;
4480             24kf*)
4481                 disable mipsdsp
4482                 disable mipsdspr2
4483             ;;
4484             24kec|34kc|1004kc)
4485                 disable mipsfpu
4486                 disable mipsdspr2
4487             ;;
4488             24kef*|34kf*|1004kf*)
4489                 disable mipsdspr2
4490             ;;
4491             74kc)
4492                 disable mipsfpu
4493             ;;
4494             p5600)
4495                 enable mips32r5
4496                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4497             ;;
4498             i6400)
4499                 enable mips64r6
4500                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4501             ;;
4502             p6600)
4503                 enable mips64r6
4504                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4505             ;;
4506         esac
4507     else
4508         # We do not disable anything. Is up to the user to disable the unwanted features.
4509         warn 'generic cpu selected'
4510     fi
4511
4512 elif enabled ppc; then
4513
4514     disable ldbrx
4515
4516     case $(tolower $cpu) in
4517         601|ppc601|powerpc601)
4518             cpuflags="-mcpu=601"
4519             disable altivec
4520         ;;
4521         603*|ppc603*|powerpc603*)
4522             cpuflags="-mcpu=603"
4523             disable altivec
4524         ;;
4525         604*|ppc604*|powerpc604*)
4526             cpuflags="-mcpu=604"
4527             disable altivec
4528         ;;
4529         g3|75*|ppc75*|powerpc75*)
4530             cpuflags="-mcpu=750"
4531             disable altivec
4532         ;;
4533         g4|745*|ppc745*|powerpc745*)
4534             cpuflags="-mcpu=7450"
4535             disable vsx
4536         ;;
4537         74*|ppc74*|powerpc74*)
4538             cpuflags="-mcpu=7400"
4539             disable vsx
4540         ;;
4541         g5|970|ppc970|powerpc970)
4542             cpuflags="-mcpu=970"
4543             disable vsx
4544         ;;
4545         power[3-6]*)
4546             cpuflags="-mcpu=$cpu"
4547             disable vsx
4548         ;;
4549         power[7-8]*)
4550             cpuflags="-mcpu=$cpu"
4551         ;;
4552         cell)
4553             cpuflags="-mcpu=cell"
4554             enable ldbrx
4555             disable vsx
4556         ;;
4557         e500mc)
4558             cpuflags="-mcpu=e500mc"
4559             disable altivec
4560         ;;
4561         e500v2)
4562             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4563             disable altivec
4564             disable dcbzl
4565         ;;
4566         e500)
4567             cpuflags="-mcpu=8540 -mhard-float"
4568             disable altivec
4569             disable dcbzl
4570         ;;
4571     esac
4572
4573 elif enabled sparc; then
4574
4575     case $cpu in
4576         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4577             cpuflags="-mcpu=$cpu"
4578         ;;
4579         ultrasparc*|niagara[234])
4580             cpuflags="-mcpu=$cpu"
4581         ;;
4582     esac
4583
4584 elif enabled x86; then
4585
4586     case $cpu in
4587         i[345]86|pentium)
4588             cpuflags="-march=$cpu"
4589             disable i686
4590             disable mmx
4591         ;;
4592         # targets that do NOT support nopl and conditional mov (cmov)
4593         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4594             cpuflags="-march=$cpu"
4595             disable i686
4596         ;;
4597         # targets that do support nopl and conditional mov (cmov)
4598         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4599         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4600         |amdfam10|barcelona|b[dt]ver*|znver*)
4601             cpuflags="-march=$cpu"
4602             enable i686
4603             enable fast_cmov
4604         ;;
4605         # targets that do support conditional mov but on which it's slow
4606         pentium4|pentium4m|prescott|nocona)
4607             cpuflags="-march=$cpu"
4608             enable i686
4609             disable fast_cmov
4610         ;;
4611     esac
4612
4613 fi
4614
4615 if [ "$cpu" != generic ]; then
4616     add_cflags  $cpuflags
4617     add_asflags $cpuflags
4618     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4619 fi
4620
4621 # compiler sanity check
4622 check_exec <<EOF
4623 int main(void){ return 0; }
4624 EOF
4625 if test "$?" != 0; then
4626     echo "$cc is unable to create an executable file."
4627     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4628         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4629         echo "Only do this if you know what cross compiling means."
4630     fi
4631     die "C compiler test failed."
4632 fi
4633
4634 add_cppflags -D_ISOC99_SOURCE
4635 add_cxxflags -D__STDC_CONSTANT_MACROS
4636 add_cxxflags -std=c++98
4637
4638 # some compilers silently accept -std=c11, so we also need to check that the
4639 # version macro is defined properly
4640 if test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L"; then
4641     add_cflags -std=c11
4642 else
4643     check_cflags -std=c99
4644 fi
4645
4646 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4647 #include <stdlib.h>
4648 EOF
4649 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4650 #include <stdlib.h>
4651 EOF
4652
4653 add_host_cppflags -D_ISOC99_SOURCE
4654 check_host_cflags -std=c99
4655 check_host_cflags -Wall
4656 check_host_cflags -O3
4657
4658 check_64bit(){
4659     arch32=$1
4660     arch64=$2
4661     expr=$3
4662     check_code cc "" "int test[2*($expr) - 1]" &&
4663         subarch=$arch64 || subarch=$arch32
4664 }
4665
4666 case "$arch" in
4667     aarch64|alpha|ia64)
4668         spic=$shared
4669     ;;
4670     mips)
4671         check_64bit mips mips64 '_MIPS_SIM > 1'
4672         spic=$shared
4673     ;;
4674     parisc)
4675         check_64bit parisc parisc64 'sizeof(void *) > 4'
4676         spic=$shared
4677     ;;
4678     ppc)
4679         check_64bit ppc ppc64 'sizeof(void *) > 4'
4680         spic=$shared
4681     ;;
4682     s390)
4683         check_64bit s390 s390x 'sizeof(void *) > 4'
4684         spic=$shared
4685     ;;
4686     sparc)
4687         check_64bit sparc sparc64 'sizeof(void *) > 4'
4688         spic=$shared
4689     ;;
4690     x86)
4691         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4692         # Treat x32 as x64 for now. Note it also needs spic=$shared
4693         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4694             subarch=x86_64
4695         if test "$subarch" = "x86_64"; then
4696             spic=$shared
4697         fi
4698     ;;
4699     ppc)
4700         check_cc <<EOF && subarch="ppc64"
4701         int test[(int)sizeof(char*) - 7];
4702 EOF
4703     ;;
4704 esac
4705
4706 enable $subarch
4707 enabled spic && enable_weak pic
4708
4709 # OS specific
4710 case $target_os in
4711     aix)
4712         SHFLAGS=-shared
4713         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4714         enabled shared && add_ldflags -Wl,-brtl
4715         ;;
4716     android)
4717         disable symver
4718         enable section_data_rel_ro
4719         SLIB_INSTALL_NAME='$(SLIBNAME)'
4720         SLIB_INSTALL_LINKS=
4721         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4722         ;;
4723     haiku)
4724         prefix_default="/boot/common"
4725         network_extralibs="-lnetwork"
4726         host_libs=
4727         ;;
4728     sunos)
4729         SHFLAGS='-shared -Wl,-h,$$(@F)'
4730         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4731         network_extralibs="-lsocket -lnsl"
4732         add_cppflags -D__EXTENSIONS__
4733         # When using suncc to build, the Solaris linker will mark
4734         # an executable with each instruction set encountered by
4735         # the Solaris assembler.  As our libraries contain their own
4736         # guards for processor-specific code, instead suppress
4737         # generation of the HWCAPS ELF section on Solaris x86 only.
4738         enabled_all suncc x86 &&
4739             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4740             add_ldflags -Wl,-M,mapfile
4741         nm_default='nm -P -g'
4742         version_script='-M'
4743         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
4744         ;;
4745     netbsd)
4746         disable symver
4747         oss_indev_extralibs="-lossaudio"
4748         oss_outdev_extralibs="-lossaudio"
4749         enabled gcc || check_ldflags -Wl,-zmuldefs
4750         ;;
4751     openbsd|bitrig)
4752         disable symver
4753         SHFLAGS='-shared'
4754         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4755         SLIB_INSTALL_LINKS=
4756         oss_indev_extralibs="-lossaudio"
4757         oss_outdev_extralibs="-lossaudio"
4758         ;;
4759     dragonfly)
4760         disable symver
4761         ;;
4762     freebsd)
4763         ;;
4764     bsd/os)
4765         add_extralibs -lpoll -lgnugetopt
4766         strip="strip -d"
4767         ;;
4768     darwin)
4769         enabled ppc && add_asflags -force_cpusubtype_ALL
4770         install_name_dir_default='$(SHLIBDIR)'
4771         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4772         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4773         strip="${strip} -x"
4774         add_ldflags -Wl,-dynamic,-search_paths_first
4775         SLIBSUF=".dylib"
4776         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4777         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4778         objformat="macho"
4779         enabled x86_64 && objformat="macho64"
4780         enabled_any pic shared x86_64 ||
4781             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4782         check_header dispatch/dispatch.h &&
4783             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
4784         version_script='-exported_symbols_list'
4785         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
4786         ;;
4787     msys*)
4788         die "Native MSYS builds are discouraged, please use the MINGW environment."
4789         ;;
4790     mingw32*|mingw64*)
4791         if test $target_os = "mingw32ce"; then
4792             disable network
4793         else
4794             target_os=mingw32
4795         fi
4796         decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
4797         decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
4798         LIBTARGET=i386
4799         if enabled x86_64; then
4800             LIBTARGET="i386:x86-64"
4801         elif enabled arm; then
4802             LIBTARGET=arm-wince
4803         fi
4804         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4805         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4806         shlibdir_default="$bindir_default"
4807         SLIBPREF=""
4808         SLIBSUF=".dll"
4809         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4810         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4811         dlltool="${cross_prefix}dlltool"
4812         if check_cmd lib.exe -list; then
4813             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4814             if enabled x86_64; then
4815                 LIBTARGET=x64
4816             fi
4817         elif check_cmd $dlltool --version; then
4818             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4819         fi
4820         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4821         SLIB_INSTALL_LINKS=
4822         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4823         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4824         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--disable-auto-image-base'
4825         objformat="win32"
4826         ranlib=:
4827         enable dos_paths
4828         check_ldflags -Wl,--nxcompat,--dynamicbase
4829         # Lets work around some stupidity in binutils.
4830         # ld will strip relocations from executables even though we need them
4831         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4832         # however ld then forgets what the entry point should be (oops) so we
4833         # have to manually (re)set it.
4834         if enabled x86_32; then
4835             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
4836         elif enabled x86_64; then
4837             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
4838             check_ldflags -Wl,--high-entropy-va # binutils 2.25
4839             # Set image base >4GB for extra entropy with HEASLR
4840             add_ldexeflags -Wl,--image-base,0x140000000
4841             append SHFLAGS -Wl,--image-base,0x180000000
4842         fi
4843         ;;
4844     win32|win64)
4845         disable symver
4846         if enabled shared; then
4847             # Link to the import library instead of the normal static library
4848             # for shared libs.
4849             LD_LIB='%.lib'
4850             # Cannot build both shared and static libs with MSVC or icl.
4851             disable static
4852         fi
4853         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4854         shlibdir_default="$bindir_default"
4855         SLIBPREF=""
4856         SLIBSUF=".dll"
4857         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4858         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4859         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4860         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4861         SLIB_INSTALL_LINKS=
4862         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4863         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4864         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4865         objformat="win32"
4866         ranlib=:
4867         enable dos_paths
4868         ;;
4869     cygwin*)
4870         target_os=cygwin
4871         shlibdir_default="$bindir_default"
4872         SLIBPREF="cyg"
4873         SLIBSUF=".dll"
4874         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4875         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4876         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4877         SLIB_INSTALL_LINKS=
4878         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4879         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4880         objformat="win32"
4881         enable dos_paths
4882         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4883         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4884         ;;
4885     *-dos|freedos|opendos)
4886         network_extralibs="-lsocket"
4887         objformat="coff"
4888         enable dos_paths
4889         add_cppflags -U__STRICT_ANSI__
4890         ;;
4891     linux)
4892         enable dv1394
4893         enable section_data_rel_ro
4894         ;;
4895     irix*)
4896         target_os=irix
4897         ranlib="echo ignoring ranlib"
4898         ;;
4899     os/2*)
4900         strip="lxlite -CS"
4901         objformat="aout"
4902         add_cppflags -D_GNU_SOURCE
4903         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4904         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4905         LIBSUF="_s.a"
4906         SLIBPREF=""
4907         SLIBSUF=".dll"
4908         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4909         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4910         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
4911             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
4912             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
4913             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
4914             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
4915         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
4916             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
4917         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4918         SLIB_INSTALL_LINKS=
4919         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
4920         enable dos_paths
4921         enable_weak os2threads
4922         ;;
4923     gnu/kfreebsd)
4924         add_cppflags -D_BSD_SOURCE
4925         ;;
4926     gnu)
4927         ;;
4928     qnx)
4929         add_cppflags -D_QNX_SOURCE
4930         network_extralibs="-lsocket"
4931         ;;
4932     symbian)
4933         SLIBSUF=".dll"
4934         enable dos_paths
4935         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4936         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4937         add_ldflags -Wl,--target1-abs,--no-undefined \
4938                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4939                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4940         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4941                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4942                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4943         ;;
4944     osf1)
4945         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4946         ;;
4947     minix)
4948         ;;
4949     plan9)
4950         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4951                      -D_REENTRANT_SOURCE        \
4952                      -D_RESEARCH_SOURCE         \
4953                      -DFD_SETSIZE=96            \
4954                      -DHAVE_SOCK_OPTS
4955         add_compat strtod.o strtod=avpriv_strtod
4956         network_extralibs='-lbsd'
4957         exeobjs=compat/plan9/main.o
4958         disable ffserver
4959         cp_f='cp'
4960         ;;
4961     none)
4962         ;;
4963     *)
4964         die "Unknown OS '$target_os'."
4965         ;;
4966 esac
4967
4968 # test if creating links works
4969 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
4970 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
4971 mkdir "$link_dest"
4972 $ln_s "$link_dest" "$link_name"
4973 touch "$link_dest/test_file"
4974 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
4975     # create link to source path
4976     [ -e src ] && rm src
4977     $ln_s "$source_path" src
4978     source_link=src
4979 else
4980     # creating directory links doesn't work
4981     # fall back to using the full source path
4982     source_link="$source_path"
4983 fi
4984 # cleanup
4985 rm -r "$link_dest"
4986 rm -r "$link_name"
4987
4988 # determine libc flavour
4989
4990 probe_libc(){
4991     pfx=$1
4992     pfx_no_=${pfx%_}
4993     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4994     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4995         eval ${pfx}libc_type=uclibc
4996         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4997     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4998         eval ${pfx}libc_type=glibc
4999         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5000     # MinGW headers can be installed on Cygwin, so check for newlib first.
5001     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5002         eval ${pfx}libc_type=newlib
5003         add_${pfx}cppflags -U__STRICT_ANSI__
5004     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5005     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5006         eval ${pfx}libc_type=mingw64
5007         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5008             add_compat msvcrt/snprintf.o
5009             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5010         fi
5011         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5012         eval test \$${pfx_no_}cc_type = "gcc" &&
5013             add_${pfx}cppflags -D__printf__=__gnu_printf__
5014     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5015          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5016         eval ${pfx}libc_type=mingw32
5017         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5018             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5019             die "ERROR: MinGW32 runtime version must be >= 3.15."
5020         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5021         check_${pfx}cpp_condition _mingw.h "defined(_WIN32_WINNT) && _WIN32_WINNT >= 0x0502" ||
5022             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
5023         eval test \$${pfx_no_}cc_type = "gcc" &&
5024             add_${pfx}cppflags -D__printf__=__gnu_printf__
5025     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5026         eval ${pfx}libc_type=msvcrt
5027         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5028             if [ "$pfx" = host_ ]; then
5029                 add_host_cppflags -Dsnprintf=_snprintf
5030             else
5031                 add_compat strtod.o strtod=avpriv_strtod
5032                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5033                                              _snprintf=avpriv_snprintf  \
5034                                              vsnprintf=avpriv_vsnprintf
5035             fi
5036         fi
5037         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5038         # 0x601 by default unless something else is set by the user.
5039         # This can easily lead to us detecting functions only present
5040         # in such new versions and producing binaries requiring windows 7.0.
5041         # Therefore explicitly set the default to XP unless the user has
5042         # set something else on the command line.
5043         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5044         # family. For these cases, configure is free to use any functions
5045         # found in the SDK headers by default. (Alternatively, we could force
5046         # _WIN32_WINNT to 0x0602 in that case.)
5047         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5048             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
5049 #ifdef WINAPI_FAMILY
5050 #include <winapifamily.h>
5051 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5052 #error not desktop
5053 #endif
5054 #endif
5055 EOF
5056     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5057         eval ${pfx}libc_type=klibc
5058     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5059         eval ${pfx}libc_type=bionic
5060     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5061         eval ${pfx}libc_type=solaris
5062         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5063     fi
5064     check_${pfx}cc <<EOF
5065 #include <time.h>
5066 void *v = localtime_r;
5067 EOF
5068 test "$?" != 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
5069 #include <time.h>
5070 void *v = localtime_r;
5071 EOF
5072
5073 }
5074
5075 probe_libc
5076 test -n "$libc_type" && enable libc_$libc_type
5077 probe_libc host_
5078 test -n "$host_libc_type" && enable host_libc_$host_libc_type
5079
5080 case $libc_type in
5081     bionic)
5082         add_compat strtod.o strtod=avpriv_strtod
5083         ;;
5084 esac
5085
5086 # hacks for compiler/libc/os combinations
5087
5088 if enabled_all tms470 libc_glibc; then
5089     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
5090     add_cppflags -D__USER_LABEL_PREFIX__=
5091     add_cppflags -D__builtin_memset=memset
5092     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
5093     add_cflags   -pds=48    # incompatible redefinition of macro
5094 fi
5095
5096 if enabled_all ccc libc_glibc; then
5097     add_ldflags -Wl,-z,now  # calls to libots crash without this
5098 fi
5099
5100 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5101     add_cppflags '-I\$(SRC_PATH)/compat/float'
5102
5103 esc(){
5104     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
5105 }
5106
5107 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
5108
5109 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5110
5111 set_default libdir
5112 : ${shlibdir_default:="$libdir"}
5113 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5114
5115 set_default $PATHS_LIST
5116 set_default nm
5117
5118 # we need to build at least one lib type
5119 if ! enabled_any static shared; then
5120     cat <<EOF
5121 At least one library type must be built.
5122 Specify --enable-static to build the static libraries or --enable-shared to
5123 build the shared libraries as well. To only build the shared libraries specify
5124 --disable-static in addition to --enable-shared.
5125 EOF
5126     exit 1
5127 fi
5128
5129 die_license_disabled() {
5130     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
5131 }
5132
5133 die_license_disabled_gpl() {
5134     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
5135 }
5136
5137 die_license_disabled gpl frei0r
5138 die_license_disabled gpl libcdio
5139 die_license_disabled gpl librubberband
5140 die_license_disabled gpl libsmbclient
5141 die_license_disabled gpl libvidstab
5142 die_license_disabled gpl libx264
5143 die_license_disabled gpl libx265
5144 die_license_disabled gpl libxavs
5145 die_license_disabled gpl libxvid
5146 die_license_disabled gpl x11grab
5147
5148 die_license_disabled nonfree libnpp
5149 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
5150 enabled gpl && die_license_disabled_gpl nonfree openssl
5151
5152 die_license_disabled version3 gmp
5153 die_license_disabled version3 libopencore_amrnb
5154 die_license_disabled version3 libopencore_amrwb
5155 die_license_disabled version3 libsmbclient
5156 die_license_disabled version3 libvo_amrwbenc
5157
5158 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
5159
5160 disabled optimizations || check_cflags -fomit-frame-pointer
5161
5162 enable_weak_pic() {
5163     disabled pic && return
5164     enable pic
5165     add_cppflags -DPIC
5166     case "$target_os" in
5167     mingw*|cygwin*)
5168         ;;
5169     *)
5170         add_cflags -fPIC
5171         ;;
5172     esac
5173     add_asflags  -fPIC
5174 }
5175
5176 enabled pic && enable_weak_pic
5177
5178 check_cc <<EOF || die "Symbol mangling check failed."
5179 int ff_extern;
5180 EOF
5181 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5182 extern_prefix=${sym%%ff_extern*}
5183
5184 check_cc <<EOF && enable_weak inline_asm
5185 void foo(void) { __asm__ volatile ("" ::); }
5186 EOF
5187
5188 _restrict=
5189 for restrict_keyword in restrict __restrict__ __restrict; do
5190     check_cc <<EOF && _restrict=$restrict_keyword && break
5191 void foo(char * $restrict_keyword p);
5192 EOF
5193 done
5194
5195 check_cc <<EOF && enable pragma_deprecated
5196 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
5197 EOF
5198
5199 check_cc <<EOF && enable attribute_packed
5200 struct { int x; } __attribute__((packed)) x;
5201 EOF
5202
5203 check_cc <<EOF && enable attribute_may_alias
5204 union { int x; } __attribute__((may_alias)) x;
5205 EOF
5206
5207 check_cc <<EOF || die "endian test failed"
5208 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5209 EOF
5210 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5211
5212 if ! enabled ppc64 || enabled bigendian; then
5213     disable vsx
5214 fi
5215
5216 check_gas() {
5217     log "check_gas using '$as' as AS"
5218     # :vararg is used on aarch64, arm and ppc altivec
5219     check_as <<EOF || return 1
5220 .macro m n, y:vararg=0
5221 \n: .int \y
5222 .endm
5223 m x
5224 EOF
5225     # .altmacro is only used in arm asm
5226     ! enabled arm || check_as <<EOF || return 1
5227 .altmacro
5228 EOF
5229     enable gnu_as
5230     return 0
5231 }
5232
5233 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5234     nogas=:
5235     enabled_any arm aarch64 && nogas=die
5236     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5237     as_noop=-v
5238
5239     case $as_type in
5240         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5241         gcc)  gaspp_as_type=gas ;;
5242         *)    gaspp_as_type=$as_type ;;
5243     esac
5244
5245     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5246
5247     test "${as#*gas-preprocessor.pl}" != "$as" ||
5248     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5249         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5250
5251     if ! check_gas ; then
5252         as=${gas:=$as}
5253         check_gas || \
5254             $nogas "GNU assembler not found, install/update gas-preprocessor"
5255     fi
5256
5257     check_as <<EOF && enable as_func
5258 .func test
5259 .endfunc
5260 EOF
5261 fi
5262
5263 check_inline_asm inline_asm_labels '"1:\n"'
5264
5265 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5266
5267 if enabled aarch64; then
5268     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5269     # internal assembler in clang 3.3 does not support this instruction
5270     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5271     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5272
5273     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5274
5275 elif enabled alpha; then
5276
5277     check_cflags -mieee
5278
5279 elif enabled arm; then
5280
5281     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
5282
5283     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
5284 float func(float a, float b){ return a+b; }
5285 EOF
5286
5287     enabled thumb && check_cflags -mthumb || check_cflags -marm
5288
5289     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
5290         enable vfp_args
5291     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5292         enable vfp_args
5293     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5294         case "${cross_prefix:-$cc}" in
5295             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
5296             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
5297 __asm__ (".eabi_attribute 28, 1");
5298 int main(void) { return 0; }
5299 EOF
5300         esac
5301         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5302     fi
5303
5304     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5305     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5306     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5307     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5308     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5309     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5310     enabled setend  && check_insn setend  'setend be'
5311
5312     [ $target_os = linux ] || [ $target_os = android ] ||
5313         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5314             $ARCH_EXT_LIST_ARM
5315
5316     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5317
5318     check_as <<EOF && enable as_dn_directive
5319 ra .dn d0.i16
5320 .unreq ra
5321 EOF
5322     check_as <<EOF && enable as_fpu_directive
5323 .fpu neon
5324 EOF
5325
5326     # llvm's integrated assembler supports .object_arch from llvm 3.5
5327     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
5328 .object_arch armv4
5329 EOF
5330
5331     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5332
5333 elif enabled mips; then
5334
5335     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5336     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5337     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5338
5339     # Enable minimum ISA based on selected options
5340     if enabled mips64; then
5341         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5342         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5343         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5344     else
5345         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5346         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5347         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5348         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5349     fi
5350
5351     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5352     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5353     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
5354     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5355     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5356
5357 elif enabled parisc; then
5358
5359     if enabled gcc; then
5360         case $($cc -dumpversion) in
5361             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5362         esac
5363     fi
5364
5365 elif enabled ppc; then
5366
5367     enable local_aligned_8 local_aligned_16 local_aligned_32
5368
5369     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5370     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5371     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5372     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5373
5374     # AltiVec flags: The FSF version of GCC differs from the Apple version
5375     if enabled altivec; then
5376         check_cflags -maltivec -mabi=altivec &&
5377         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
5378         check_cflags -faltivec
5379
5380         # check if our compiler supports Motorola AltiVec C API
5381         check_cc <<EOF || disable altivec
5382 $inc_altivec_h
5383 int main(void) {
5384     vector signed int v1 = (vector signed int) { 0 };
5385     vector signed int v2 = (vector signed int) { 1 };
5386     v1 = vec_add(v1, v2);
5387     return 0;
5388 }
5389 EOF
5390
5391         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5392     fi
5393
5394     if enabled vsx; then
5395         check_cflags -mvsx &&
5396         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
5397     fi
5398
5399     if enabled power8; then
5400         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
5401     fi
5402
5403 elif enabled x86; then
5404
5405     check_builtin rdtsc    intrin.h   "__rdtsc()"
5406     check_builtin mm_empty mmintrin.h "_mm_empty()"
5407
5408     enable local_aligned_8 local_aligned_16 local_aligned_32
5409
5410     # check whether EBP is available on x86
5411     # As 'i' is stored on the stack, this program will crash
5412     # if the base pointer is used to access it because the
5413     # base pointer is cleared in the inline assembly code.
5414     check_exec_crash <<EOF && enable ebp_available
5415 volatile int i=0;
5416 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5417 return i;
5418 EOF
5419
5420     # check whether EBX is available on x86
5421     check_inline_asm ebx_available '""::"b"(0)' &&
5422         check_inline_asm ebx_available '"":::"%ebx"'
5423
5424     # check whether xmm clobbers are supported
5425     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5426
5427     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5428         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5429
5430     # check whether binutils is new enough to compile SSSE3/MMXEXT
5431     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5432     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5433
5434     if ! disabled_any asm mmx yasm; then
5435         if check_cmd $yasmexe --version; then
5436             enabled x86_64 && yasm_extra="-m amd64"
5437             yasm_debug="-g dwarf2"
5438         elif check_cmd nasm -v; then
5439             yasmexe=nasm
5440             yasm_debug="-g -F dwarf"
5441             if enabled x86_64; then
5442                 case "$objformat" in
5443                     elf)   objformat=elf64 ;;
5444                     win32) objformat=win64 ;;
5445                 esac
5446             fi
5447         fi
5448
5449         YASMFLAGS="-f $objformat $yasm_extra"
5450         enabled pic               && append YASMFLAGS "-DPIC"
5451         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
5452         case "$objformat" in
5453             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
5454         esac
5455
5456         check_yasm "movbe ecx, [5]" && enable yasm ||
5457             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
5458         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
5459         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
5460         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
5461         check_yasm "CPU amdnop" || disable cpunop
5462     fi
5463
5464     case "$cpu" in
5465         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5466             disable fast_clz
5467         ;;
5468     esac
5469
5470 fi
5471
5472 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
5473
5474 check_ldflags -Wl,--as-needed
5475 check_ldflags -Wl,-z,noexecstack
5476
5477 if check_func dlopen && check_func dlsym; then
5478     ldl=
5479 elif check_func dlopen -ldl && check_func dlsym -ldl; then
5480     ldl=-ldl
5481 fi
5482
5483 avisynth_demuxer_extralibs='$ldl'
5484 cuda_extralibs='$ldl'
5485 decklink_outdev_extralibs="$decklink_outdev_extralibs $ldl"
5486 decklink_indev_extralibs="$decklink_indev_extralibs $ldl"
5487 frei0r_filter_extralibs='$ldl'
5488 frei0r_src_filter_extralibs='$ldl'
5489 ladspa_filter_extralibs='$ldl'
5490 nvenc_extralibs='$ldl'
5491 coreimage_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5492 coreimagesrc_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5493
5494 if ! disabled network; then
5495     check_func getaddrinfo $network_extralibs
5496     check_func inet_aton $network_extralibs
5497
5498     check_type netdb.h "struct addrinfo"
5499     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5500     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5501     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5502     check_type poll.h "struct pollfd"
5503     check_type netinet/sctp.h "struct sctp_event_subscribe"
5504     check_struct "sys/socket.h" "struct msghdr" msg_flags
5505     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5506     check_type netinet/in.h "struct sockaddr_in6"
5507     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5508     check_type "sys/types.h sys/socket.h" socklen_t
5509
5510     # Prefer arpa/inet.h over winsock2
5511     if check_header arpa/inet.h ; then
5512         check_func closesocket
5513     elif check_header winsock2.h ; then
5514         check_func_headers winsock2.h closesocket -lws2 &&
5515             network_extralibs="-lws2" ||
5516         { check_func_headers winsock2.h closesocket -lws2_32 &&
5517             network_extralibs="-lws2_32"; } || disable winsock2_h network
5518         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5519
5520         check_type ws2tcpip.h socklen_t
5521         check_type ws2tcpip.h "struct addrinfo"
5522         check_type ws2tcpip.h "struct group_source_req"
5523         check_type ws2tcpip.h "struct ip_mreq_source"
5524         check_type ws2tcpip.h "struct ipv6_mreq"
5525         check_type winsock2.h "struct pollfd"
5526         check_struct winsock2.h "struct sockaddr" sa_len
5527         check_type ws2tcpip.h "struct sockaddr_in6"
5528         check_type ws2tcpip.h "struct sockaddr_storage"
5529     else
5530         disable network
5531     fi
5532 fi
5533
5534 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5535 check_builtin atomic_compare_exchange "" "int *ptr, *oldval; int newval; __atomic_compare_exchange_n(ptr, oldval, newval, 0, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST)"
5536 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5537 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5538 check_builtin sarestart signal.h "SA_RESTART"
5539 check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" -lpthread
5540 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5541 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5542 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5543 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5544
5545 case "$custom_allocator" in
5546     jemalloc)
5547         # jemalloc by default does not use a prefix
5548         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5549     ;;
5550     tcmalloc)
5551         require_pkg_config libtcmalloc gperftools/tcmalloc.h tc_malloc
5552         malloc_prefix=tc_
5553     ;;
5554 esac
5555
5556 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5557 check_func  ${malloc_prefix}memalign            && enable memalign
5558 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5559
5560 check_func  access
5561 check_func_headers stdlib.h arc4random
5562 check_func_headers time.h clock_gettime || { check_func_headers time.h clock_gettime -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
5563 check_func  fcntl
5564 check_func  fork
5565 check_func  gethrtime
5566 check_func  getopt
5567 check_func  getrusage
5568 check_func  gettimeofday
5569 check_func  isatty
5570 check_func  mach_absolute_time
5571 check_func  mkstemp
5572 check_func  mmap
5573 check_func  mprotect
5574 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5575 check_func_headers time.h nanosleep || { check_func_headers time.h nanosleep -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
5576 check_func  sched_getaffinity
5577 check_func  setrlimit
5578 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5579 check_func  strerror_r
5580 check_func  sysconf
5581 check_func  sysctl
5582 check_func  usleep
5583
5584 check_func_headers conio.h kbhit
5585 check_func_headers io.h setmode
5586 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5587 check_func_headers stdlib.h getenv
5588 check_func_headers sys/stat.h lstat
5589
5590 check_func_headers windows.h CoTaskMemFree -lole32
5591 check_func_headers windows.h GetProcessAffinityMask
5592 check_func_headers windows.h GetProcessTimes
5593 check_func_headers windows.h GetSystemTimeAsFileTime
5594 check_func_headers windows.h LoadLibrary
5595 check_func_headers windows.h MapViewOfFile
5596 check_func_headers windows.h PeekNamedPipe
5597 check_func_headers windows.h SetConsoleTextAttribute
5598 check_func_headers windows.h SetConsoleCtrlHandler
5599 check_func_headers windows.h Sleep
5600 check_func_headers windows.h VirtualAlloc
5601 check_struct windows.h "CONDITION_VARIABLE" Ptr
5602 check_func_headers glob.h glob
5603 enabled xlib &&
5604     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5605
5606 check_header AudioToolbox/AudioToolbox.h
5607 check_header direct.h
5608 check_header dirent.h
5609 check_header dlfcn.h
5610 check_header d3d11.h
5611 check_header dxva.h
5612 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5613 check_header io.h
5614 check_header libcrystalhd/libcrystalhd_if.h
5615 check_header mach/mach_time.h
5616 check_header malloc.h
5617 check_header net/udplite.h
5618 check_header poll.h
5619 check_header sys/mman.h
5620 check_header sys/param.h
5621 check_header sys/resource.h
5622 check_header sys/select.h
5623 check_header sys/time.h
5624 check_header sys/un.h
5625 check_header termios.h
5626 check_header unistd.h
5627 check_header valgrind/valgrind.h
5628 check_header vdpau/vdpau.h
5629 check_header vdpau/vdpau_x11.h
5630 check_header VideoDecodeAcceleration/VDADecoder.h
5631 check_header VideoToolbox/VideoToolbox.h
5632 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5633 enabled videotoolbox && check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferColorPrimaries_ITU_R_2020 -framework CoreVideo
5634 check_header windows.h
5635 check_header X11/extensions/XvMClib.h
5636 check_header asm/types.h
5637
5638 # it seems there are versions of clang in some distros that try to use the
5639 # gcc headers, which explodes for stdatomic
5640 # so we also check that atomics actually work here
5641 check_builtin stdatomic_h stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0)"
5642
5643 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
5644 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
5645 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
5646 check_lib "CoreServices/CoreServices.h" UTGetOSTypeFromString "-framework CoreServices"
5647
5648 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5649
5650 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5651 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5652 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5653 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5654 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5655
5656 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
5657 check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
5658 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
5659 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
5660 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5661 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5662 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
5663 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
5664
5665 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5666
5667 check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt
5668
5669 if ! disabled w32threads && ! enabled pthreads; then
5670     check_func_headers "windows.h process.h" _beginthreadex &&
5671         enable w32threads || disable w32threads
5672     if ! enabled w32threads && enabled winrt; then
5673         check_func_headers "windows.h" CreateThread &&
5674             enable w32threads || disable w32threads
5675     fi
5676 fi
5677
5678 # check for some common methods of building with pthread support
5679 # do this before the optional library checks as some of them require pthreads
5680 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5681     enable pthreads
5682     if check_func pthread_join -pthread && check_func pthread_create -pthread; then
5683         add_cflags -pthread
5684         add_extralibs -pthread
5685     elif check_func pthread_join -pthreads && check_func pthread_create -pthreads; then
5686         add_cflags -pthreads
5687         add_extralibs -pthreads
5688     elif check_func pthread_join -ldl -pthread && check_func pthread_create -ldl -pthread; then
5689         add_cflags -ldl -pthread
5690         add_extralibs -ldl -pthread
5691     elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
5692         add_extralibs -lpthreadGC2
5693     elif check_lib pthread.h pthread_join -lpthread && check_lib pthread.h pthread_create -lpthread; then
5694         :
5695     elif ! check_func pthread_join && ! check_func pthread_create; then
5696         disable pthreads
5697     fi
5698     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5699 fi
5700
5701
5702 if enabled pthreads; then
5703   check_func pthread_cancel
5704 fi
5705
5706 enabled pthreads &&
5707     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)"
5708
5709 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
5710 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
5711 disabled  lzma || check_lib2  lzma.h lzma_version_number -llzma || disable lzma
5712
5713 check_lib math.h sin -lm && LIBM="-lm"
5714 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
5715
5716 atan2f_args=2
5717 copysign_args=2
5718 hypot_args=2
5719 ldexpf_args=2
5720 powf_args=2
5721
5722 for func in $MATH_FUNCS; do
5723     eval check_mathfunc $func \${${func}_args:-1}
5724 done
5725
5726 for func in $COMPLEX_FUNCS; do
5727     eval check_complexfunc $func \${${func}_args:-1}
5728 done
5729
5730 # these are off by default, so fail if requested and not available
5731 enabled avfoundation_indev && { check_header_objcc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
5732 enabled avfoundation_indev && { check_lib2 CoreGraphics/CoreGraphics.h CGGetActiveDisplayList -framework CoreGraphics ||
5733                                 check_lib2 ApplicationServices/ApplicationServices.h CGGetActiveDisplayList -framework ApplicationServices; }
5734 enabled cuda              && check_header cuda.h # this is not a dependency
5735 enabled cuvid             && { enabled cuda ||
5736                                die "ERROR: CUVID requires CUDA"; }
5737 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5738 enabled coreimage_filter  && { check_header_objcc QuartzCore/CoreImage.h || disable coreimage_filter; }
5739 enabled coreimagesrc_filter && { check_header_objcc QuartzCore/CoreImage.h || disable coreimagesrc_filter; }
5740 enabled decklink          && { { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; } &&
5741                                { check_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a060100" || die "ERROR: Decklink API version must be >= 10.6.1."; } }
5742 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
5743 enabled gmp               && require2 gmp gmp.h mpz_export -lgmp
5744 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
5745 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads &&
5746                                check_lib2 "dlfcn.h" dlopen -ldl; }
5747 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
5748 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5749 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
5750 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
5751 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
5752 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5753                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
5754                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5755 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
5756 enabled libfdk_aac        && { use_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5757                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5758                                  warn "using libfdk without pkg-config"; } }
5759 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"
5760 enabled libflite          && require2 libflite "flite/flite.h" flite_init $flite_libs
5761 enabled fontconfig        && enable libfontconfig
5762 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
5763 enabled libfreetype       && require_libfreetype
5764 enabled libfribidi        && require_pkg_config fribidi fribidi.h fribidi_version_info
5765 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
5766 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5767                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
5768                                done || die "ERROR: libgsm not found"; }
5769 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
5770 enabled libkvazaar        && require_pkg_config "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
5771 enabled libmfx            && require_pkg_config libmfx "mfx/mfxvideo.h" MFXInit
5772 enabled libmodplug        && require_pkg_config libmodplug libmodplug/modplug.h ModPlug_Load
5773 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5774 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
5775 enabled libnpp            && require libnpp npp.h nppGetLibVersion -lnppi -lnppc
5776 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5777 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5778 enabled libopencv         && { check_header opencv2/core/core_c.h &&
5779                                { use_pkg_config opencv opencv2/core/core_c.h cvCreateImageHeader ||
5780                                  require opencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
5781                                require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader; }
5782 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
5783 enabled libopenjpeg       && { { check_lib2 openjpeg-2.1/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5784                                check_lib2 openjpeg-2.1/openjpeg.h opj_version -lopenjp2 ||
5785                                { check_lib2 openjpeg-2.0/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5786                                { check_lib2 openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5787                                { check_lib2 openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5788                                die "ERROR: libopenjpeg not found"; }
5789 enabled libopenmpt        && require_pkg_config "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create
5790 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
5791 enabled libpulse          && require_pkg_config libpulse pulse/pulseaudio.h pa_context_new
5792 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
5793 enabled librubberband     && require_pkg_config "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new
5794 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
5795 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
5796 enabled libsmbclient      && { use_pkg_config smbclient libsmbclient.h smbc_init ||
5797                                require smbclient libsmbclient.h smbc_init -lsmbclient; }
5798 enabled libsnappy         && require snappy snappy-c.h snappy_compress -lsnappy
5799 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr && LIBSOXR="-lsoxr"
5800 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
5801 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
5802 enabled libtesseract      && require_pkg_config tesseract tesseract/capi.h TessBaseAPICreate
5803 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
5804 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
5805                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
5806                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
5807 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
5808 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
5809 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
5810 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
5811
5812 enabled libvpx            && {
5813     enabled libvpx_vp8_decoder && {
5814         use_pkg_config "vpx >= 0.9.1" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
5815             check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
5816                 die "ERROR: libvpx decoder version must be >=0.9.1";
5817     }
5818     enabled libvpx_vp8_encoder && {
5819         use_pkg_config "vpx >= 0.9.7" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
5820             check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
5821                 die "ERROR: libvpx encoder version must be >=0.9.7";
5822     }
5823     enabled libvpx_vp9_decoder && {
5824         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
5825             check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx ||
5826                 disable libvpx_vp9_decoder;
5827     }
5828     enabled libvpx_vp9_encoder && {
5829         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
5830             check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx ||
5831                 disable libvpx_vp9_encoder;
5832     }
5833     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
5834         die "libvpx enabled but no supported decoders found"
5835     fi
5836 }
5837
5838 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
5839 enabled libwebp           && {
5840     enabled libwebp_encoder      && require_pkg_config "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
5841     enabled libwebp_anim_encoder && { use_pkg_config "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit || disable libwebp_anim_encoder; } }
5842 enabled libx264           && { use_pkg_config x264 "stdint.h x264.h" x264_encoder_encode ||
5843                                { require libx264 x264.h x264_encoder_encode -lx264 &&
5844                                  warn "using libx264 without pkg-config"; } } &&
5845                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
5846                                die "ERROR: libx264 must be installed and version must be >= 0.118."; } &&
5847                              { check_cpp_condition x264.h "X264_MPEG2" &&
5848                                enable libx262; }
5849 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
5850                              { check_cpp_condition x265.h "X265_BUILD >= 68" ||
5851                                die "ERROR: libx265 version must be >= 68."; }
5852 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
5853 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
5854 enabled libzimg           && require_pkg_config "zimg >= 2.3.0" zimg.h zimg_get_api_version
5855 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
5856 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi &&
5857                              { check_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
5858                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
5859 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
5860 enabled mmal              && { check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
5861                                 { ! enabled cross_compile && {
5862                                     add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline ;
5863                                     add_extralibs -L/opt/vc/lib/ -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ;
5864                                     check_lib interface/mmal/mmal.h mmal_port_connect ; }
5865                                 check_lib interface/mmal/mmal.h mmal_port_connect ; } ||
5866                                die "ERROR: mmal not found"; }
5867 enabled mmal && check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"
5868
5869 enabled netcdf            && require_pkg_config netcdf netcdf.h nc_inq_libvers
5870 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
5871                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
5872                                die "ERROR: openal not found"; } &&
5873                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
5874                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
5875 enabled opencl            && { check_lib2 OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
5876                                check_lib2 CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
5877                                die "ERROR: opencl not found"; } &&
5878                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
5879                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
5880                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
5881 enabled opengl            && { check_lib GL/glx.h glXGetProcAddress "-lGL" ||
5882                                check_lib2 windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
5883                                check_lib2 OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
5884                                check_lib2 ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
5885                                die "ERROR: opengl not found."
5886                              }
5887 enabled omx_rpi && enable omx
5888 enabled omx               && { check_header OMX_Core.h ||
5889                                 { ! enabled cross_compile && enabled omx_rpi && {
5890                                     add_cflags -isystem/opt/vc/include/IL ; }
5891                                 check_header OMX_Core.h ; } ||
5892                                die "ERROR: OpenMAX IL headers not found"; }
5893 enabled openssl           && { use_pkg_config openssl openssl/ssl.h OPENSSL_init_ssl ||
5894                                use_pkg_config openssl openssl/ssl.h SSL_library_init ||
5895                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
5896                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
5897                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
5898                                die "ERROR: openssl not found"; }
5899 enabled qtkit_indev      && { check_header_objcc QTKit/QTKit.h || disable qtkit_indev; }
5900
5901 # libdc1394 check
5902 if enabled libdc1394; then
5903     { require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new &&
5904         enable libdc1394_2; } ||
5905     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
5906         enable libdc1394_1; } ||
5907     die "ERROR: No version of libdc1394 found "
5908 fi
5909
5910 if enabled gcrypt; then
5911     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
5912     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
5913         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
5914         gcrypt_libs=$("${GCRYPT_CONFIG}" --libs)
5915         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_libs ||
5916             die "ERROR: gcrypt not found"
5917         add_cflags $gcrypt_cflags && add_extralibs $gcrypt_libs
5918     else
5919         require2 gcrypt gcrypt.h gcry_mpi_new -lgcrypt
5920     fi
5921 fi
5922
5923 disabled sdl && disable sdl2
5924 if ! disabled sdl2; then
5925     SDL2_CONFIG="${cross_prefix}sdl2-config"
5926     if check_pkg_config sdl2 SDL_events.h SDL_PollEvent; then
5927         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
5928         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
5929         check_func SDL_Init $sdl2_libs $sdl2_cflags && enable sdl2
5930     else
5931       if "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
5932         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
5933         sdl2_libs=$("${SDL2_CONFIG}" --libs)
5934         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
5935         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
5936         check_func SDL_Init $sdl2_libs $sdl2_cflags && enable sdl2
5937       fi
5938     fi
5939     if test $target_os = "mingw32"; then
5940         sdl2_libs="$sdl2_libs -mconsole"
5941     fi
5942 fi
5943 enabled sdl2 && enable sdl && add_cflags $sdl2_cflags && add_extralibs $sdl2_libs
5944
5945 disabled securetransport || { check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5946     check_lib2 "Security/SecureTransport.h Security/Security.h" "SSLCreateContext SecItemImport" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5947     enable securetransport; }
5948
5949 disabled schannel || { check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
5950                        check_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" && enable schannel && add_extralibs -lsecur32; }
5951
5952 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
5953 enabled makeinfo \
5954     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
5955     && enable makeinfo_html || disable makeinfo_html
5956 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
5957 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
5958 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
5959 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
5960
5961 check_header linux/fb.h
5962 check_header linux/videodev.h
5963 check_header linux/videodev2.h
5964 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5965
5966 check_header sys/videoio.h
5967 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5968
5969 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
5970 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
5971 # w32api 3.12 had it defined wrong
5972 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
5973
5974 check_type "dshow.h" IBaseFilter
5975
5976 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
5977 { check_header dev/bktr/ioctl_meteor.h &&
5978   check_header dev/bktr/ioctl_bt848.h; } ||
5979 { check_header machine/ioctl_meteor.h &&
5980   check_header machine/ioctl_bt848.h; } ||
5981 { check_header dev/video/meteor/ioctl_meteor.h &&
5982   check_header dev/video/bktr/ioctl_bt848.h; } ||
5983 check_header dev/ic/bt8xx.h
5984
5985 check_header sndio.h
5986 if check_struct sys/soundcard.h audio_buf_info bytes; then
5987     enable_safe sys/soundcard.h
5988 else
5989     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
5990     #include <sys/soundcard.h>
5991     audio_buf_info abc;
5992 EOF
5993 fi
5994 check_header soundcard.h
5995
5996 enabled_any alsa_indev alsa_outdev &&
5997     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
5998
5999 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack &&
6000     check_func jack_port_get_latency_range -ljack
6001
6002 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
6003
6004 if enabled libcdio; then
6005     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6006     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6007     die "ERROR: No usable libcdio/cdparanoia found"
6008 fi
6009
6010 enabled xlib &&
6011     check_lib X11/Xlib.h XOpenDisplay -lX11 || disable xlib
6012
6013 if ! disabled libxcb; then
6014     check_pkg_config "xcb >= 1.4" xcb/xcb.h xcb_connect || {
6015         enabled libxcb && die "ERROR: libxcb >= 1.4 not found";
6016     } && disable x11grab && enable libxcb
6017
6018 if enabled libxcb; then
6019     disabled libxcb_shm || {
6020         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
6021             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
6022         } && check_header sys/shm.h && enable libxcb_shm; }
6023
6024     disabled libxcb_xfixes || {
6025         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
6026             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
6027         } && enable libxcb_xfixes; }
6028
6029     disabled libxcb_shape || {
6030         check_pkg_config xcb-shape xcb/shape.h xcb_shape_get_rectangles || {
6031             enabled libxcb_shape && die "ERROR: libxcb_shape not found";
6032         } && enable libxcb_shape; }
6033
6034     add_cflags $xcb_cflags $xcb_shm_cflags $xcb_xfixes_cflags $xcb_shape_cflags
6035     add_extralibs $xcb_libs $xcb_shm_libs $xcb_xfixes_libs $xcb_shape_libs
6036 fi
6037 fi
6038
6039 if enabled x11grab; then
6040     enabled xlib || die "ERROR: Xlib not found"
6041     require Xext X11/extensions/XShm.h XShmCreateImage -lXext
6042     require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
6043 fi
6044
6045 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6046
6047 enabled dxva2api_h &&
6048     check_cc <<EOF && enable dxva2api_cobj
6049 #define _WIN32_WINNT 0x0600
6050 #define COBJMACROS
6051 #include <windows.h>
6052 #include <d3d9.h>
6053 #include <dxva2api.h>
6054 int main(void) { IDirectXVideoDecoder *o = NULL; IDirectXVideoDecoder_Release(o); return 0; }
6055 EOF
6056
6057 enabled vaapi &&
6058     check_lib va/va.h vaInitialize -lva ||
6059     disable vaapi
6060
6061 enabled vaapi &&
6062     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
6063     disable vaapi
6064
6065 if enabled vaapi ; then
6066     enabled xlib &&
6067     check_lib2 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 &&
6068     enable vaapi_x11
6069
6070     check_lib2 "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm &&
6071     enable vaapi_drm
6072 fi
6073
6074 enabled vdpau &&
6075     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
6076     disable vdpau
6077
6078 enabled vdpau && enabled xlib &&
6079     check_lib2 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
6080     enable vdpau_x11
6081
6082 if enabled x86; then
6083     case $target_os in
6084         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6085             ;;
6086         *)
6087             disable cuda cuvid nvenc
6088             ;;
6089     esac
6090 else
6091     disable cuda cuvid nvenc
6092 fi
6093
6094 enabled nvenc &&
6095     check_cc -I$source_path <<EOF || disable nvenc
6096 #include "compat/nvenc/nvEncodeAPI.h"
6097 NV_ENCODE_API_FUNCTION_LIST flist;
6098 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6099 int main(void) { return 0; }
6100 EOF
6101
6102 # Funny iconv installations are not unusual, so check it after all flags have been set
6103 disabled iconv || check_func_headers iconv.h iconv || check_lib2 iconv.h iconv -liconv || disable iconv
6104
6105 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6106
6107 # add some useful compiler flags if supported
6108 check_cflags -Wdeclaration-after-statement
6109 check_cflags -Wall
6110 check_cflags -Wdisabled-optimization
6111 check_cflags -Wpointer-arith
6112 check_cflags -Wredundant-decls
6113 check_cflags -Wwrite-strings
6114 check_cflags -Wtype-limits
6115 check_cflags -Wundef
6116 check_cflags -Wmissing-prototypes
6117 check_cflags -Wno-pointer-to-int-cast
6118 check_cflags -Wstrict-prototypes
6119 check_cflags -Wempty-body
6120 enabled extra_warnings && check_cflags -Winline
6121 enabled extra_warnings && check_cflags -Wcast-qual
6122
6123 check_disable_warning(){
6124     warning_flag=-W${1#-Wno-}
6125     test_cflags $warning_flag && add_cflags $1
6126 }
6127
6128 check_disable_warning -Wno-parentheses
6129 check_disable_warning -Wno-switch
6130 check_disable_warning -Wno-format-zero-length
6131 check_disable_warning -Wno-pointer-sign
6132 check_disable_warning -Wno-unused-const-variable
6133
6134 # add some linker flags
6135 check_ldflags -Wl,--warn-common
6136 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6137 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
6138 enabled rpath && add_ldlibflags -Wl,-rpath,$libdir
6139 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6140
6141 # add some strip flags
6142 # -wN '..@*' is more selective than -x, but not available everywhere.
6143 check_stripflags -wN \'..@*\' || check_stripflags -x
6144
6145 enabled neon_clobber_test &&
6146     check_ldflags -Wl,--wrap,avcodec_open2              \
6147                   -Wl,--wrap,avcodec_decode_audio4      \
6148                   -Wl,--wrap,avcodec_decode_video2      \
6149                   -Wl,--wrap,avcodec_decode_subtitle2   \
6150                   -Wl,--wrap,avcodec_encode_audio2      \
6151                   -Wl,--wrap,avcodec_encode_video2      \
6152                   -Wl,--wrap,avcodec_send_packet        \
6153                   -Wl,--wrap,avcodec_receive_frame      \
6154                   -Wl,--wrap,avcodec_send_frame         \
6155                   -Wl,--wrap,avcodec_receive_packet     \
6156                   -Wl,--wrap,avcodec_encode_subtitle    \
6157                   -Wl,--wrap,swr_convert                \
6158                   -Wl,--wrap,avresample_convert ||
6159     disable neon_clobber_test
6160
6161 enabled xmm_clobber_test &&
6162     check_ldflags -Wl,--wrap,avcodec_open2              \
6163                   -Wl,--wrap,avcodec_decode_audio4      \
6164                   -Wl,--wrap,avcodec_decode_video2      \
6165                   -Wl,--wrap,avcodec_decode_subtitle2   \
6166                   -Wl,--wrap,avcodec_encode_audio2      \
6167                   -Wl,--wrap,avcodec_encode_video2      \
6168                   -Wl,--wrap,avcodec_encode_subtitle    \
6169                   -Wl,--wrap,avcodec_send_packet        \
6170                   -Wl,--wrap,avcodec_receive_frame      \
6171                   -Wl,--wrap,avcodec_send_frame         \
6172                   -Wl,--wrap,avcodec_receive_packet     \
6173                   -Wl,--wrap,swr_convert                \
6174                   -Wl,--wrap,avresample_convert         \
6175                   -Wl,--wrap,sws_scale ||
6176     disable xmm_clobber_test
6177
6178 check_ld "cc" <<EOF && enable proper_dce
6179 extern const int array[512];
6180 static inline int func(void) { return array[0]; }
6181 int main(void) { return 0; }
6182 EOF
6183
6184 if enabled proper_dce; then
6185     echo "X { local: *; };" > $TMPV
6186     if test_ldflags -Wl,${version_script},$TMPV; then
6187         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6188         check_cc <<EOF && enable symver_asm_label
6189 void ff_foo(void) __asm__ ("av_foo@VERSION");
6190 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6191 EOF
6192         check_cc <<EOF && enable symver_gnu_asm
6193 __asm__(".symver ff_foo,av_foo@VERSION");
6194 void ff_foo(void) {}
6195 EOF
6196     fi
6197 fi
6198
6199 if [ -z "$optflags" ]; then
6200     if enabled small; then
6201         optflags=$cflags_size
6202     elif enabled optimizations; then
6203         optflags=$cflags_speed
6204     else
6205         optflags=$cflags_noopt
6206     fi
6207 fi
6208
6209 check_optflags(){
6210     check_cflags "$@"
6211     enabled lto && check_ldflags "$@"
6212 }
6213
6214
6215 if enabled lto; then
6216     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6217     check_cflags  -flto
6218     check_ldflags -flto $cpuflags
6219     disable inline_asm_direct_symbol_refs
6220 fi
6221
6222 check_optflags $optflags
6223 check_optflags -fno-math-errno
6224 check_optflags -fno-signed-zeros
6225
6226 enabled ftrapv && check_cflags -ftrapv
6227
6228 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6229 int x;
6230 EOF
6231
6232
6233 if enabled icc; then
6234     # Just warnings, no remarks
6235     check_cflags -w1
6236     # -wd: Disable following warnings
6237     # 144, 167, 556: -Wno-pointer-sign
6238     # 188: enumerated type mixed with another type
6239     # 1292: attribute "foo" ignored
6240     # 1419: external declaration in primary source file
6241     # 10006: ignoring unknown option -fno-signed-zeros
6242     # 10148: ignoring unknown option -Wno-parentheses
6243     # 10156: ignoring option '-W'; no argument required
6244     # 13200: No EMMS instruction before call to function
6245     # 13203: No EMMS instruction before return from function
6246     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6247     # 11030: Warning unknown option --as-needed
6248     # 10156: ignoring option '-export'; no argument required
6249     check_ldflags -wd10156,11030
6250     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6251     enable ebp_available
6252     # The test above does not test linking
6253     enabled lto && disable symver_asm_label
6254     if enabled x86_32; then
6255         icc_version=$($cc -dumpversion)
6256         test ${icc_version%%.*} -ge 11 &&
6257             check_cflags -falign-stack=maintain-16-byte ||
6258             disable aligned_stack
6259     fi
6260 elif enabled ccc; then
6261     # disable some annoying warnings
6262     add_cflags -msg_disable bitnotint
6263     add_cflags -msg_disable mixfuncvoid
6264     add_cflags -msg_disable nonstandcast
6265     add_cflags -msg_disable unsupieee
6266 elif enabled gcc; then
6267     check_optflags -fno-tree-vectorize
6268     check_cflags -Werror=format-security
6269     check_cflags -Werror=implicit-function-declaration
6270     check_cflags -Werror=missing-prototypes
6271     check_cflags -Werror=return-type
6272     check_cflags -Werror=vla
6273     check_cflags -Wformat
6274     check_cflags -fdiagnostics-color=auto
6275     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6276 elif enabled llvm_gcc; then
6277     check_cflags -mllvm -stack-alignment=16
6278 elif enabled clang; then
6279     check_cflags -mllvm -stack-alignment=16
6280     check_cflags -mstack-alignment=16
6281     check_cflags -Qunused-arguments
6282     check_cflags -Werror=implicit-function-declaration
6283     check_cflags -Werror=missing-prototypes
6284     check_cflags -Werror=return-type
6285 elif enabled cparser; then
6286     add_cflags -Wno-missing-variable-declarations
6287     add_cflags -Wno-empty-statement
6288 elif enabled armcc; then
6289     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6290     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6291     # 2523: use of inline assembly is deprecated
6292     add_cflags -W${armcc_opt},--diag_suppress=2523
6293     add_cflags -W${armcc_opt},--diag_suppress=1207
6294     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6295     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6296     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6297     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6298 elif enabled tms470; then
6299     add_cflags -pds=824 -pds=837
6300     disable inline_asm
6301 elif enabled pathscale; then
6302     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6303 elif enabled_any msvc icl; then
6304     enabled x86_32 && disable aligned_stack
6305     enabled_all x86_32 debug && add_cflags -Oy-
6306     enabled debug && add_ldflags -debug
6307     enable pragma_deprecated
6308     if enabled icl; then
6309         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6310         # (correctly) on icl 13.x.
6311         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6312             add_cflags -Qansi-alias
6313         # Some inline asm is not compilable in debug
6314         if enabled debug; then
6315             disable ebp_available
6316             disable ebx_available
6317         fi
6318     fi
6319     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6320     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
6321     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6322     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6323     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6324     # MSVC 2013 and newer can handle it fine.
6325     # If this declspec fails, force including stdlib.h before the restrict redefinition
6326     # happens in config.h.
6327     if [ $_restrict != restrict ]; then
6328         check_cc <<EOF || add_cflags -FIstdlib.h
6329 __declspec($_restrict) void* foo(int);
6330 EOF
6331     fi
6332     check_func strtoll || add_cflags -Dstrtoll=_strtoi64
6333     check_func strtoull || add_cflags -Dstrtoull=_strtoui64
6334     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6335     # Issue has been fixed in MSVC v19.00.24218.
6336     check_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6337         check_cflags -d2SSAOptimizer-
6338     # enable utf-8 source processing on VS2015 U2 and newer
6339     check_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6340         add_cflags -utf-8
6341 fi
6342
6343 for pfx in "" host_; do
6344     varname=${pfx%_}cc_type
6345     eval "type=\$$varname"
6346     if [ $type = "msvc" ]; then
6347         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6348 static inline int foo(int a) { return a; }
6349 EOF
6350     fi
6351 done
6352
6353 case $as_type in
6354     clang)
6355         add_asflags -Qunused-arguments
6356     ;;
6357 esac
6358
6359 case $ld_type in
6360     clang)
6361         check_ldflags -Qunused-arguments
6362     ;;
6363 esac
6364
6365 case $target_os in
6366     osf1)
6367         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
6368     ;;
6369     plan9)
6370         add_cppflags -Dmain=plan9_main
6371     ;;
6372 esac
6373
6374 enable frame_thread_encoder
6375
6376 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6377
6378 check_deps $CONFIG_LIST       \
6379            $CONFIG_EXTRA      \
6380            $HAVE_LIST         \
6381            $ALL_COMPONENTS    \
6382
6383 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"
6384
6385
6386 if test $target_os = "haiku"; then
6387     disable memalign
6388     disable posix_memalign
6389 fi
6390
6391 enabled_all dxva2 dxva2api_cobj CoTaskMemFree &&
6392     prepend ffmpeg_libs $($ldflags_filter "-lole32") &&
6393     enable dxva2_lib
6394
6395 ! enabled_any memalign posix_memalign aligned_malloc &&
6396     enabled simd_align_16 && enable memalign_hack
6397
6398 # add_dep lib dep
6399 # -> enable ${lib}_deps_${dep}
6400 # -> add $dep to ${lib}_deps only once
6401 add_dep() {
6402     lib=$1
6403     dep=$2
6404     enabled "${lib}_deps_${dep}" && return 0
6405     enable  "${lib}_deps_${dep}"
6406     prepend "${lib}_deps" $dep
6407 }
6408
6409 # merge deps lib components
6410 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
6411 merge_deps() {
6412     lib=$1
6413     shift
6414     for comp in $*; do
6415         enabled $comp || continue
6416         eval "dep=\"\$${comp}_deps\""
6417         for d in $dep; do
6418             add_dep $lib $d
6419         done
6420     done
6421 }
6422
6423 merge_deps libavfilter $FILTER_LIST
6424
6425 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6426
6427 for thread in $THREADS_LIST; do
6428     if enabled $thread; then
6429         test -n "$thread_type" &&
6430             die "ERROR: Only one thread type must be selected." ||
6431             thread_type="$thread"
6432     fi
6433 done
6434
6435 if disabled stdatomic_h; then
6436     if enabled atomics_gcc; then
6437         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6438     elif enabled atomics_win32; then
6439         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6440     elif enabled atomics_suncc; then
6441         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6442     elif enabled pthreads; then
6443         add_compat atomics/pthread/stdatomic.o
6444         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6445     else
6446         enabled threads && die "Threading is enabled, but no atomics are available"
6447         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6448     fi
6449 fi
6450
6451 # Check if requested libraries were found.
6452 for lib in $AUTODETECT_LIBS; do
6453     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6454 done
6455
6456 enabled zlib && add_cppflags -DZLIB_CONST
6457
6458 # conditional library dependencies, in linking order
6459 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6460 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6461 enabled aresample_filter    && prepend avfilter_deps "swresample"
6462 enabled asyncts_filter      && prepend avfilter_deps "avresample"
6463 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6464 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6465 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6466 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6467 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6468 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6469 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6470 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6471 enabled pan_filter          && prepend avfilter_deps "swresample"
6472 enabled pp_filter           && prepend avfilter_deps "postproc"
6473 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6474 enabled resample_filter && prepend avfilter_deps "avresample"
6475 enabled sab_filter          && prepend avfilter_deps "swscale"
6476 enabled scale_filter    && prepend avfilter_deps "swscale"
6477 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6478 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6479 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6480 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6481 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6482 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6483 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6484 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6485 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6486
6487 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6488
6489 enabled opus_decoder    && prepend avcodec_deps "swresample"
6490
6491 expand_deps(){
6492     lib_deps=${1}_deps
6493     eval "deps=\$$lib_deps"
6494     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6495     unique $lib_deps
6496 }
6497
6498 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6499 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6500
6501 map 'expand_deps $v' $LIBRARY_LIST
6502
6503 echo "install prefix            $prefix"
6504 echo "source path               $source_path"
6505 echo "C compiler                $cc"
6506 echo "C library                 $libc_type"
6507 if test "$host_cc" != "$cc"; then
6508     echo "host C compiler           $host_cc"
6509     echo "host C library            $host_libc_type"
6510 fi
6511 echo "ARCH                      $arch ($cpu)"
6512 if test "$build_suffix" != ""; then
6513     echo "build suffix              $build_suffix"
6514 fi
6515 if test "$progs_suffix" != ""; then
6516     echo "progs suffix              $progs_suffix"
6517 fi
6518 if test "$extra_version" != ""; then
6519     echo "version string suffix     $extra_version"
6520 fi
6521 echo "big-endian                ${bigendian-no}"
6522 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6523 if enabled x86; then
6524     echo "${yasmexe}                      ${yasm-no}"
6525     echo "MMX enabled               ${mmx-no}"
6526     echo "MMXEXT enabled            ${mmxext-no}"
6527     echo "3DNow! enabled            ${amd3dnow-no}"
6528     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6529     echo "SSE enabled               ${sse-no}"
6530     echo "SSSE3 enabled             ${ssse3-no}"
6531     echo "AESNI enabled             ${aesni-no}"
6532     echo "AVX enabled               ${avx-no}"
6533     echo "XOP enabled               ${xop-no}"
6534     echo "FMA3 enabled              ${fma3-no}"
6535     echo "FMA4 enabled              ${fma4-no}"
6536     echo "i686 features enabled     ${i686-no}"
6537     echo "CMOV is fast              ${fast_cmov-no}"
6538     echo "EBX available             ${ebx_available-no}"
6539     echo "EBP available             ${ebp_available-no}"
6540 fi
6541 if enabled aarch64; then
6542     echo "NEON enabled              ${neon-no}"
6543     echo "VFP enabled               ${vfp-no}"
6544 fi
6545 if enabled arm; then
6546     echo "ARMv5TE enabled           ${armv5te-no}"
6547     echo "ARMv6 enabled             ${armv6-no}"
6548     echo "ARMv6T2 enabled           ${armv6t2-no}"
6549     echo "VFP enabled               ${vfp-no}"
6550     echo "NEON enabled              ${neon-no}"
6551     echo "THUMB enabled             ${thumb-no}"
6552 fi
6553 if enabled mips; then
6554     echo "MIPS FPU enabled          ${mipsfpu-no}"
6555     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6556     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6557     echo "MIPS MSA enabled          ${msa-no}"
6558     echo "LOONGSON MMI enabled      ${mmi-no}"
6559 fi
6560 if enabled ppc; then
6561     echo "AltiVec enabled           ${altivec-no}"
6562     echo "VSX enabled               ${vsx-no}"
6563     echo "POWER8 enabled            ${power8-no}"
6564     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6565     echo "dcbzl available           ${dcbzl-no}"
6566 fi
6567 echo "debug symbols             ${debug-no}"
6568 echo "strip symbols             ${stripping-no}"
6569 echo "optimize for size         ${small-no}"
6570 echo "optimizations             ${optimizations-no}"
6571 echo "static                    ${static-no}"
6572 echo "shared                    ${shared-no}"
6573 echo "postprocessing support    ${postproc-no}"
6574 echo "new filter support        ${avfilter-no}"
6575 echo "network support           ${network-no}"
6576 echo "threading support         ${thread_type-no}"
6577 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6578 echo "SDL2 support              ${sdl2-no}"
6579 echo "opencl enabled            ${opencl-no}"
6580 echo "JNI support               ${jni-no}"
6581 echo "texi2html enabled         ${texi2html-no}"
6582 echo "perl enabled              ${perl-no}"
6583 echo "pod2man enabled           ${pod2man-no}"
6584 echo "makeinfo enabled          ${makeinfo-no}"
6585 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6586 test -n "$random_seed" &&
6587     echo "random seed               ${random_seed}"
6588 echo
6589
6590 echo "Enabled programs:"
6591 print_enabled '' $PROGRAM_LIST | print_in_columns
6592 echo
6593
6594 echo "External libraries:"
6595 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_in_columns
6596 echo
6597
6598 echo "External libraries providing hardware acceleration:"
6599 print_enabled '' $HWACCEL_LIBRARY_LIST | print_in_columns
6600 echo
6601
6602 echo "Libraries:"
6603 print_enabled '' $LIBRARY_LIST | print_in_columns
6604 echo
6605
6606 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6607     echo "Enabled ${type}s:"
6608     eval list=\$$(toupper $type)_LIST
6609     print_enabled '_*' $list | print_in_columns
6610     echo
6611 done
6612
6613 license="LGPL version 2.1 or later"
6614 if enabled nonfree; then
6615     license="nonfree and unredistributable"
6616 elif enabled gplv3; then
6617     license="GPL version 3 or later"
6618 elif enabled lgplv3; then
6619     license="LGPL version 3 or later"
6620 elif enabled gpl; then
6621     license="GPL version 2 or later"
6622 fi
6623
6624 echo "License: $license"
6625
6626 echo "Creating config.mak, config.h, and doc/config.texi..."
6627
6628 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6629
6630 enabled stripping || strip="echo skipping strip"
6631
6632 config_files="$TMPH config.mak doc/config.texi"
6633
6634 cat > config.mak <<EOF
6635 # Automatically generated by configure - do not modify!
6636 ifndef FFMPEG_CONFIG_MAK
6637 FFMPEG_CONFIG_MAK=1
6638 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6639 prefix=$prefix
6640 LIBDIR=\$(DESTDIR)$libdir
6641 SHLIBDIR=\$(DESTDIR)$shlibdir
6642 INCDIR=\$(DESTDIR)$incdir
6643 BINDIR=\$(DESTDIR)$bindir
6644 DATADIR=\$(DESTDIR)$datadir
6645 DOCDIR=\$(DESTDIR)$docdir
6646 MANDIR=\$(DESTDIR)$mandir
6647 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6648 INSTALL_NAME_DIR=$install_name_dir
6649 SRC_PATH=$source_path
6650 SRC_LINK=$source_link
6651 ifndef MAIN_MAKEFILE
6652 SRC_PATH:=\$(SRC_PATH:.%=..%)
6653 endif
6654 CC_IDENT=$cc_ident
6655 ARCH=$arch
6656 INTRINSICS=$intrinsics
6657 CC=$cc
6658 CXX=$cxx
6659 AS=$as
6660 OBJCC=$objcc
6661 LD=$ld
6662 DEPCC=$dep_cc
6663 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6664 DEPAS=$as
6665 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6666 YASM=$yasmexe
6667 DEPYASM=$yasmexe
6668 AR=$ar
6669 ARFLAGS=$arflags
6670 AR_O=$ar_o
6671 RANLIB=$ranlib
6672 STRIP=$strip
6673 CP=cp -p
6674 LN_S=$ln_s
6675 CPPFLAGS=$CPPFLAGS
6676 CFLAGS=$CFLAGS
6677 CXXFLAGS=$CXXFLAGS
6678 OBJCFLAGS=$OBJCFLAGS
6679 ASFLAGS=$ASFLAGS
6680 AS_C=$AS_C
6681 AS_O=$AS_O
6682 OBJCC_C=$OBJCC_C
6683 OBJCC_E=$OBJCC_E
6684 OBJCC_O=$OBJCC_O
6685 CC_C=$CC_C
6686 CC_E=$CC_E
6687 CC_O=$CC_O
6688 CXX_C=$CXX_C
6689 CXX_O=$CXX_O
6690 LD_O=$LD_O
6691 LD_LIB=$LD_LIB
6692 LD_PATH=$LD_PATH
6693 DLLTOOL=$dlltool
6694 WINDRES=$windres
6695 DEPWINDRES=$dep_cc
6696 DOXYGEN=$doxygen
6697 LDFLAGS=$LDFLAGS
6698 LDEXEFLAGS=$LDEXEFLAGS
6699 LDLIBFLAGS=$LDLIBFLAGS
6700 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
6701 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
6702 YASMFLAGS=$YASMFLAGS
6703 BUILDSUF=$build_suffix
6704 PROGSSUF=$progs_suffix
6705 FULLNAME=$FULLNAME
6706 LIBPREF=$LIBPREF
6707 LIBSUF=$LIBSUF
6708 LIBNAME=$LIBNAME
6709 SLIBPREF=$SLIBPREF
6710 SLIBSUF=$SLIBSUF
6711 EXESUF=$EXESUF
6712 EXTRA_VERSION=$extra_version
6713 CCDEP=$CCDEP
6714 CXXDEP=$CXXDEP
6715 CCDEP_FLAGS=$CCDEP_FLAGS
6716 ASDEP=$ASDEP
6717 ASDEP_FLAGS=$ASDEP_FLAGS
6718 CC_DEPFLAGS=$CC_DEPFLAGS
6719 AS_DEPFLAGS=$AS_DEPFLAGS
6720 HOSTCC=$host_cc
6721 HOSTLD=$host_ld
6722 HOSTCFLAGS=$host_cflags
6723 HOSTCPPFLAGS=$host_cppflags
6724 HOSTEXESUF=$HOSTEXESUF
6725 HOSTLDFLAGS=$host_ldflags
6726 HOSTLIBS=$host_libs
6727 DEPHOSTCC=$host_cc
6728 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
6729 HOSTCCDEP=$HOSTCCDEP
6730 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
6731 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
6732 HOSTCC_C=$HOSTCC_C
6733 HOSTCC_O=$HOSTCC_O
6734 HOSTLD_O=$HOSTLD_O
6735 TARGET_EXEC=$target_exec $target_exec_args
6736 TARGET_PATH=$target_path
6737 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
6738 CFLAGS-ffplay=${sdl2_cflags}
6739 ZLIB=$($ldflags_filter -lz)
6740 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
6741 EXTRALIBS=$extralibs
6742 COMPAT_OBJS=$compat_objs
6743 EXEOBJS=$exeobjs
6744 INSTALL=$install
6745 LIBTARGET=${LIBTARGET}
6746 SLIBNAME=${SLIBNAME}
6747 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
6748 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
6749 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
6750 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
6751 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
6752 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
6753 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
6754 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
6755 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
6756 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
6757 NOREDZONE_FLAGS=$noredzone_flags
6758 EOF
6759
6760 get_version(){
6761     lcname=lib${1}
6762     name=$(toupper $lcname)
6763     file=$source_path/$lcname/version.h
6764     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
6765     enabled raise_major && eval ${name}_VERSION_MAJOR=$((${name}_VERSION_MAJOR+100))
6766     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
6767     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
6768     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
6769     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
6770 }
6771
6772 map 'get_version $v' $LIBRARY_LIST
6773
6774 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> config.mak' $LIBRARY_LIST
6775
6776 print_program_libs(){
6777     eval "program_libs=\$${1}_libs"
6778     eval echo "LIBS-${1}=${program_libs}" >> config.mak
6779 }
6780
6781 map 'print_program_libs $v' $PROGRAM_LIST
6782
6783 cat > $TMPH <<EOF
6784 /* Automatically generated by configure - do not modify! */
6785 #ifndef FFMPEG_CONFIG_H
6786 #define FFMPEG_CONFIG_H
6787 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
6788 #define FFMPEG_LICENSE "$(c_escape $license)"
6789 #define CONFIG_THIS_YEAR 2017
6790 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
6791 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
6792 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
6793 #define av_restrict $_restrict
6794 #define EXTERN_PREFIX "${extern_prefix}"
6795 #define EXTERN_ASM ${extern_prefix}
6796 #define BUILDSUF "$build_suffix"
6797 #define SLIBSUF "$SLIBSUF"
6798 #define HAVE_MMX2 HAVE_MMXEXT
6799 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
6800 EOF
6801
6802 test -n "$assert_level" &&
6803     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
6804
6805 test -n "$malloc_prefix" &&
6806     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
6807
6808 if enabled yasm; then
6809     append config_files $TMPASM
6810     printf '' >$TMPASM
6811 fi
6812
6813 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
6814
6815
6816 mkdir -p doc
6817 mkdir -p tests
6818 mkdir -p tests/api
6819 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
6820
6821 print_config ARCH_   "$config_files" $ARCH_LIST
6822 print_config HAVE_   "$config_files" $HAVE_LIST
6823 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
6824                                      $CONFIG_EXTRA      \
6825                                      $ALL_COMPONENTS    \
6826
6827 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
6828 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
6829
6830 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
6831 cp_if_changed $TMPH config.h
6832 touch .config
6833
6834 enabled yasm && cp_if_changed $TMPASM config.asm
6835
6836 cat > $TMPH <<EOF
6837 /* Generated by ffconf */
6838 #ifndef AVUTIL_AVCONFIG_H
6839 #define AVUTIL_AVCONFIG_H
6840 EOF
6841
6842 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
6843
6844 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
6845
6846 cp_if_changed $TMPH libavutil/avconfig.h
6847
6848 if test -n "$WARNINGS"; then
6849     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
6850     enabled fatal_warnings && exit 1
6851 fi
6852
6853 # generate the lists of enabled components
6854 print_enabled_components(){
6855     file=$1
6856     struct_name=$2
6857     name=$3
6858     shift 3
6859     echo "static const $struct_name *$name[] = {" > $TMPH
6860     for c in $*; do
6861         enabled $c && printf "    &ff_%s,\n" $c >> $TMPH
6862     done
6863     echo "    NULL };" >> $TMPH
6864     cp_if_changed $TMPH $file
6865 }
6866
6867 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
6868 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
6869
6870 # build pkg-config files
6871
6872 lib_version(){
6873     eval printf "\"lib${1}${build_suffix} >= \$LIB$(toupper ${1})_VERSION, \""
6874 }
6875
6876 pkgconfig_generate(){
6877     name=$1
6878     shortname=${name#lib}${build_suffix}
6879     comment=$2
6880     version=$3
6881     libs=$4
6882     requires=$(map 'lib_version $v' $(eval echo \$${name#lib}_deps))
6883     requires=${requires%, }
6884     enabled ${name#lib} || return 0
6885     mkdir -p $name
6886     cat <<EOF > $name/$name${build_suffix}.pc
6887 prefix=$prefix
6888 exec_prefix=\${prefix}
6889 libdir=$libdir
6890 includedir=$incdir
6891
6892 Name: $name
6893 Description: $comment
6894 Version: $version
6895 Requires: $(enabled shared || echo $requires)
6896 Requires.private: $(enabled shared && echo $requires)
6897 Conflicts:
6898 Libs: -L\${libdir} $(enabled rpath && echo "-Wl,-rpath,\${libdir}") -l${shortname} $(enabled shared || echo $libs)
6899 Libs.private: $(enabled shared && echo $libs)
6900 Cflags: -I\${includedir}
6901 EOF
6902
6903 mkdir -p doc/examples/pc-uninstalled
6904 includedir=${source_path}
6905 [ "$includedir" = . ] && includedir="\${pcfiledir}/../../.."
6906     cat <<EOF > doc/examples/pc-uninstalled/${name}-uninstalled.pc
6907 prefix=
6908 exec_prefix=
6909 libdir=\${pcfiledir}/../../../$name
6910 includedir=${includedir}
6911
6912 Name: $name
6913 Description: $comment
6914 Version: $version
6915 Requires: $requires
6916 Conflicts:
6917 Libs: -L\${libdir} -Wl,-rpath,\${libdir} -l${shortname} $(enabled shared || echo $libs)
6918 Cflags: -I\${includedir}
6919 EOF
6920 }
6921
6922 pkgconfig_generate libavutil     "FFmpeg utility library"               "$LIBAVUTIL_VERSION"     "$LIBRT $LIBM"
6923 pkgconfig_generate libavcodec    "FFmpeg codec library"                 "$LIBAVCODEC_VERSION"    "$extralibs"
6924 pkgconfig_generate libavformat   "FFmpeg container format library"      "$LIBAVFORMAT_VERSION"   "$extralibs"
6925 pkgconfig_generate libavdevice   "FFmpeg device handling library"       "$LIBAVDEVICE_VERSION"   "$extralibs"
6926 pkgconfig_generate libavfilter   "FFmpeg audio/video filtering library" "$LIBAVFILTER_VERSION"   "$extralibs"
6927 pkgconfig_generate libpostproc   "FFmpeg postprocessing library"        "$LIBPOSTPROC_VERSION"   ""
6928 pkgconfig_generate libavresample "Libav audio resampling library"       "$LIBAVRESAMPLE_VERSION" "$LIBM"
6929 pkgconfig_generate libswscale    "FFmpeg image rescaling library"       "$LIBSWSCALE_VERSION"    "$LIBM"
6930 pkgconfig_generate libswresample "FFmpeg audio resampling library"      "$LIBSWRESAMPLE_VERSION" "$LIBM $LIBSOXR"