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     imdct15
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 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2343 mpeg_er_select="error_resilience"
2344 mpegaudio_select="mpegaudiodsp"
2345 mpegaudiodsp_select="dct"
2346 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2347 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2348 vc1dsp_select="h264chroma qpeldsp startcode"
2349 rdft_select="fft"
2350
2351 # decoders / encoders
2352 aac_decoder_select="imdct15 mdct sinewin"
2353 aac_fixed_decoder_select="mdct sinewin"
2354 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2355 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2356 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2357 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2358 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2359 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2360 adpcm_g722_decoder_select="g722dsp"
2361 adpcm_g722_encoder_select="g722dsp"
2362 aic_decoder_select="golomb idctdsp"
2363 alac_encoder_select="lpc"
2364 als_decoder_select="bswapdsp"
2365 amrnb_decoder_select="lsp"
2366 amrwb_decoder_select="lsp"
2367 amv_decoder_select="sp5x_decoder exif"
2368 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2369 ape_decoder_select="bswapdsp llauddsp"
2370 apng_decoder_select="zlib"
2371 apng_encoder_select="llvidencdsp zlib"
2372 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2373 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2374 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2375 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2376 atrac1_decoder_select="mdct sinewin"
2377 atrac3_decoder_select="mdct"
2378 atrac3p_decoder_select="mdct sinewin"
2379 avrn_decoder_select="exif jpegtables"
2380 bink_decoder_select="blockdsp hpeldsp"
2381 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2382 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2383 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2384 cllc_decoder_select="bswapdsp"
2385 comfortnoise_encoder_select="lpc"
2386 cook_decoder_select="audiodsp mdct sinewin"
2387 cscd_decoder_select="lzo"
2388 cscd_decoder_suggest="zlib"
2389 dca_decoder_select="mdct"
2390 dds_decoder_select="texturedsp"
2391 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2392 dnxhd_decoder_select="blockdsp idctdsp"
2393 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2394 dvvideo_decoder_select="dvprofile idctdsp"
2395 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2396 dxa_decoder_select="zlib"
2397 dxv_decoder_select="lzf texturedsp"
2398 eac3_decoder_select="ac3_decoder"
2399 eac3_encoder_select="ac3_encoder"
2400 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2401 eatgq_decoder_select="aandcttables"
2402 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2403 exr_decoder_select="zlib"
2404 ffv1_decoder_select="golomb rangecoder"
2405 ffv1_encoder_select="rangecoder"
2406 ffvhuff_decoder_select="huffyuv_decoder"
2407 ffvhuff_encoder_select="huffyuv_encoder"
2408 fic_decoder_select="golomb"
2409 flac_decoder_select="flacdsp golomb"
2410 flac_encoder_select="bswapdsp flacdsp golomb lpc"
2411 flashsv2_decoder_select="zlib"
2412 flashsv2_encoder_select="zlib"
2413 flashsv_decoder_select="zlib"
2414 flashsv_encoder_select="zlib"
2415 flv_decoder_select="h263_decoder"
2416 flv_encoder_select="h263_encoder"
2417 fourxm_decoder_select="blockdsp bswapdsp"
2418 fraps_decoder_select="bswapdsp huffman"
2419 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2420 g729_decoder_select="audiodsp"
2421 h261_decoder_select="mpegvideo"
2422 h261_encoder_select="aandcttables mpegvideoenc"
2423 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2424 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2425 h263i_decoder_select="h263_decoder"
2426 h263p_decoder_select="h263_decoder"
2427 h263p_encoder_select="h263_encoder"
2428 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2429 h264_decoder_suggest="error_resilience"
2430 hap_decoder_select="snappy texturedsp"
2431 hap_encoder_deps="libsnappy"
2432 hap_encoder_select="texturedspenc"
2433 hevc_decoder_select="bswapdsp cabac golomb videodsp"
2434 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2435 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2436 iac_decoder_select="imc_decoder"
2437 imc_decoder_select="bswapdsp fft mdct sinewin"
2438 indeo3_decoder_select="hpeldsp"
2439 indeo4_decoder_select="ividsp"
2440 indeo5_decoder_select="ividsp"
2441 interplay_video_decoder_select="hpeldsp"
2442 jpegls_decoder_select="golomb mjpeg_decoder"
2443 jpegls_encoder_select="golomb"
2444 jv_decoder_select="blockdsp"
2445 lagarith_decoder_select="llviddsp"
2446 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2447 loco_decoder_select="golomb"
2448 magicyuv_decoder_select="llviddsp"
2449 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2450 metasound_decoder_select="lsp mdct sinewin"
2451 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2452 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2453 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2454 mjpegb_decoder_select="mjpeg_decoder"
2455 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2456 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2457 mlp_decoder_select="mlp_parser"
2458 motionpixels_decoder_select="bswapdsp"
2459 mp1_decoder_select="mpegaudio"
2460 mp1float_decoder_select="mpegaudio"
2461 mp2_decoder_select="mpegaudio"
2462 mp2float_decoder_select="mpegaudio"
2463 mp3_decoder_select="mpegaudio"
2464 mp3adu_decoder_select="mpegaudio"
2465 mp3adufloat_decoder_select="mpegaudio"
2466 mp3float_decoder_select="mpegaudio"
2467 mp3on4_decoder_select="mpegaudio"
2468 mp3on4float_decoder_select="mpegaudio"
2469 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2470 mpc8_decoder_select="mpegaudiodsp"
2471 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2472 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2473 mpegvideo_decoder_select="mpegvideo"
2474 mpeg1video_decoder_select="mpegvideo"
2475 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2476 mpeg2video_decoder_select="mpegvideo"
2477 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2478 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2479 mpeg4_encoder_select="h263_encoder"
2480 msa1_decoder_select="mss34dsp"
2481 msmpeg4v1_decoder_select="h263_decoder"
2482 msmpeg4v2_decoder_select="h263_decoder"
2483 msmpeg4v2_encoder_select="h263_encoder"
2484 msmpeg4v3_decoder_select="h263_decoder"
2485 msmpeg4v3_encoder_select="h263_encoder"
2486 mss2_decoder_select="vc1_decoder mpegvideo"
2487 mts2_decoder_select="mss34dsp"
2488 mxpeg_decoder_select="mjpeg_decoder"
2489 nellymoser_decoder_select="mdct sinewin"
2490 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2491 nuv_decoder_select="idctdsp lzo"
2492 on2avc_decoder_select="mdct"
2493 opus_decoder_deps="swresample"
2494 opus_decoder_select="imdct15"
2495 png_decoder_select="zlib"
2496 png_encoder_select="llvidencdsp zlib"
2497 prores_decoder_select="blockdsp idctdsp"
2498 prores_encoder_select="fdctdsp"
2499 qcelp_decoder_select="lsp"
2500 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2501 ra_144_decoder_select="audiodsp"
2502 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2503 ralf_decoder_select="golomb"
2504 rawvideo_decoder_select="bswapdsp"
2505 rscc_decoder_select="zlib"
2506 rtjpeg_decoder_select="me_cmp"
2507 rv10_decoder_select="h263_decoder"
2508 rv10_encoder_select="h263_encoder"
2509 rv20_decoder_select="h263_decoder"
2510 rv20_encoder_select="h263_encoder"
2511 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2512 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2513 screenpresso_decoder_select="zlib"
2514 shorten_decoder_select="golomb"
2515 sipr_decoder_select="lsp"
2516 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2517 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2518 sonic_decoder_select="golomb rangecoder"
2519 sonic_encoder_select="golomb rangecoder"
2520 sonic_ls_encoder_select="golomb rangecoder"
2521 sp5x_decoder_select="mjpeg_decoder"
2522 svq1_decoder_select="hpeldsp"
2523 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2524 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2525 svq3_decoder_suggest="zlib"
2526 tak_decoder_select="audiodsp"
2527 tdsc_decoder_select="zlib mjpeg_decoder"
2528 theora_decoder_select="vp3_decoder"
2529 thp_decoder_select="mjpeg_decoder"
2530 tiff_decoder_suggest="zlib lzma"
2531 tiff_encoder_suggest="zlib"
2532 truehd_decoder_select="mlp_parser"
2533 truemotion2_decoder_select="bswapdsp"
2534 truespeech_decoder_select="bswapdsp"
2535 tscc_decoder_select="zlib"
2536 twinvq_decoder_select="mdct lsp sinewin"
2537 txd_decoder_select="texturedsp"
2538 utvideo_decoder_select="bswapdsp llviddsp"
2539 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2540 vble_decoder_select="llviddsp"
2541 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2542 vc1_qsv_decoder_deps="libmfx"
2543 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel"
2544 vc1image_decoder_select="vc1_decoder"
2545 vorbis_decoder_select="mdct"
2546 vorbis_encoder_select="mdct"
2547 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2548 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2549 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2550 vp6a_decoder_select="vp6_decoder"
2551 vp6f_decoder_select="vp6_decoder"
2552 vp7_decoder_select="h264pred videodsp vp8dsp"
2553 vp8_decoder_select="h264pred videodsp vp8dsp"
2554 vp9_decoder_select="videodsp vp9_parser"
2555 webp_decoder_select="vp8_decoder exif"
2556 wmalossless_decoder_select="llauddsp"
2557 wmapro_decoder_select="mdct sinewin wma_freqs"
2558 wmav1_decoder_select="mdct sinewin wma_freqs"
2559 wmav1_encoder_select="mdct sinewin wma_freqs"
2560 wmav2_decoder_select="mdct sinewin wma_freqs"
2561 wmav2_encoder_select="mdct sinewin wma_freqs"
2562 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2563 wmv1_decoder_select="h263_decoder"
2564 wmv1_encoder_select="h263_encoder"
2565 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2566 wmv2_encoder_select="h263_encoder wmv2dsp"
2567 wmv3_decoder_select="vc1_decoder"
2568 wmv3image_decoder_select="wmv3_decoder"
2569 xma1_decoder_select="wmapro_decoder"
2570 xma2_decoder_select="wmapro_decoder"
2571 zerocodec_decoder_select="zlib"
2572 zlib_decoder_select="zlib"
2573 zlib_encoder_select="zlib"
2574 zmbv_decoder_select="zlib"
2575 zmbv_encoder_select="zlib"
2576
2577 # platform codecs
2578 audiotoolbox_deps="AudioToolbox_AudioToolbox_h"
2579 audiotoolbox_extralibs="-framework CoreFoundation -framework AudioToolbox -framework CoreMedia"
2580
2581 # hardware accelerators
2582 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2583 cuda_deps_any="dlopen LoadLibrary"
2584 cuvid_deps="cuda"
2585 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2586 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2587 dxva2_extralibs="-luser32"
2588 vaapi_deps="va_va_h"
2589 vda_framework_deps="VideoDecodeAcceleration_VDADecoder_h"
2590 vda_framework_extralibs="-framework VideoDecodeAcceleration"
2591 vda_deps="vda_framework pthreads"
2592 vda_extralibs="-framework CoreFoundation -framework QuartzCore"
2593 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2594 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2595 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2596 xvmc_deps="X11_extensions_XvMClib_h"
2597
2598 h263_vaapi_hwaccel_deps="vaapi"
2599 h263_vaapi_hwaccel_select="h263_decoder"
2600 h263_videotoolbox_hwaccel_deps="videotoolbox"
2601 h263_videotoolbox_hwaccel_select="h263_decoder"
2602 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2603 h264_cuvid_hwaccel_deps="cuda cuvid"
2604 h264_d3d11va_hwaccel_deps="d3d11va"
2605 h264_d3d11va_hwaccel_select="h264_decoder"
2606 h264_dxva2_hwaccel_deps="dxva2"
2607 h264_dxva2_hwaccel_select="h264_decoder"
2608 h264_mediacodec_decoder_deps="mediacodec"
2609 h264_mediacodec_hwaccel_deps="mediacodec"
2610 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2611 h264_mmal_decoder_deps="mmal"
2612 h264_mmal_decoder_select="mmal"
2613 h264_mmal_hwaccel_deps="mmal"
2614 h264_omx_encoder_deps="omx"
2615 h264_qsv_hwaccel_deps="libmfx"
2616 h264_vaapi_hwaccel_deps="vaapi"
2617 h264_vaapi_hwaccel_select="h264_decoder"
2618 h264_vda_decoder_deps="vda"
2619 h264_vda_decoder_select="h264_decoder"
2620 h264_vda_hwaccel_deps="vda"
2621 h264_vda_hwaccel_select="h264_decoder"
2622 h264_vda_old_hwaccel_deps="vda"
2623 h264_vda_old_hwaccel_select="h264_decoder"
2624 h264_vdpau_decoder_deps="vdpau"
2625 h264_vdpau_decoder_select="h264_decoder"
2626 h264_vdpau_hwaccel_deps="vdpau"
2627 h264_vdpau_hwaccel_select="h264_decoder"
2628 h264_videotoolbox_hwaccel_deps="videotoolbox"
2629 h264_videotoolbox_hwaccel_select="h264_decoder"
2630 hevc_cuvid_hwaccel_deps="cuda cuvid"
2631 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2632 hevc_d3d11va_hwaccel_select="hevc_decoder"
2633 hevc_mediacodec_decoder_deps="mediacodec"
2634 hevc_mediacodec_hwaccel_deps="mediacodec"
2635 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2636 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2637 hevc_dxva2_hwaccel_select="hevc_decoder"
2638 hevc_qsv_hwaccel_deps="libmfx"
2639 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2640 hevc_vaapi_hwaccel_select="hevc_decoder"
2641 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2642 hevc_vdpau_hwaccel_select="hevc_decoder"
2643 mjpeg_cuvid_hwaccel_deps="cuda cuvid"
2644 mpeg_vdpau_decoder_deps="vdpau"
2645 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2646 mpeg_xvmc_hwaccel_deps="xvmc"
2647 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2648 mpeg1_cuvid_hwaccel_deps="cuda cuvid"
2649 mpeg1_vdpau_decoder_deps="vdpau"
2650 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2651 mpeg1_vdpau_hwaccel_deps="vdpau"
2652 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2653 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2654 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2655 mpeg1_xvmc_hwaccel_deps="xvmc"
2656 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2657 mpeg2_crystalhd_decoder_select="crystalhd"
2658 mpeg2_cuvid_hwaccel_deps="cuda cuvid"
2659 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2660 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2661 mpeg2_dxva2_hwaccel_deps="dxva2"
2662 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2663 mpeg2_mmal_decoder_deps="mmal"
2664 mpeg2_mmal_decoder_select="mmal"
2665 mpeg2_mmal_hwaccel_deps="mmal"
2666 mpeg2_qsv_hwaccel_deps="libmfx"
2667 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2668 mpeg2_vaapi_hwaccel_deps="vaapi"
2669 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2670 mpeg2_vdpau_hwaccel_deps="vdpau"
2671 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2672 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2673 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2674 mpeg2_xvmc_hwaccel_deps="xvmc"
2675 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2676 mpeg4_crystalhd_decoder_select="crystalhd"
2677 mpeg4_cuvid_hwaccel_deps="cuda cuvid"
2678 mpeg4_mediacodec_decoder_deps="mediacodec"
2679 mpeg4_mediacodec_hwaccel_deps="mediacodec"
2680 mpeg4_mmal_decoder_deps="mmal"
2681 mpeg4_mmal_decoder_select="mmal"
2682 mpeg4_mmal_hwaccel_deps="mmal"
2683 mpeg4_omx_encoder_deps="omx"
2684 mpeg4_vaapi_hwaccel_deps="vaapi"
2685 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2686 mpeg4_vdpau_decoder_deps="vdpau"
2687 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2688 mpeg4_vdpau_hwaccel_deps="vdpau"
2689 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2690 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2691 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2692 msmpeg4_crystalhd_decoder_select="crystalhd"
2693 vc1_crystalhd_decoder_select="crystalhd"
2694 vc1_cuvid_hwaccel_deps="cuda cuvid"
2695 vc1_d3d11va_hwaccel_deps="d3d11va"
2696 vc1_d3d11va_hwaccel_select="vc1_decoder"
2697 vc1_dxva2_hwaccel_deps="dxva2"
2698 vc1_dxva2_hwaccel_select="vc1_decoder"
2699 vc1_mmal_decoder_deps="mmal"
2700 vc1_mmal_decoder_select="mmal"
2701 vc1_mmal_hwaccel_deps="mmal"
2702 vc1_qsv_hwaccel_deps="libmfx"
2703 vc1_qsv_hwaccel_select="qsvdec_vc1"
2704 vc1_vaapi_hwaccel_deps="vaapi"
2705 vc1_vaapi_hwaccel_select="vc1_decoder"
2706 vc1_vdpau_decoder_deps="vdpau"
2707 vc1_vdpau_decoder_select="vc1_decoder"
2708 vc1_vdpau_hwaccel_deps="vdpau"
2709 vc1_vdpau_hwaccel_select="vc1_decoder"
2710 vp8_cuvid_hwaccel_deps="cuda cuvid"
2711 vp9_cuvid_hwaccel_deps="cuda cuvid"
2712 vp8_mediacodec_decoder_deps="mediacodec"
2713 vp8_mediacodec_hwaccel_deps="mediacodec"
2714 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2715 vp9_d3d11va_hwaccel_select="vp9_decoder"
2716 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2717 vp9_dxva2_hwaccel_select="vp9_decoder"
2718 vp9_mediacodec_decoder_deps="mediacodec"
2719 vp9_mediacodec_hwaccel_deps="mediacodec"
2720 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2721 vp9_vaapi_hwaccel_select="vp9_decoder"
2722 wmv3_crystalhd_decoder_select="crystalhd"
2723 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2724 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2725 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2726 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2727 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2728
2729 # hardware-accelerated codecs
2730 omx_deps="dlopen pthreads"
2731 omx_extralibs='$ldl'
2732 qsvdec_select="qsv"
2733 qsvenc_select="qsv"
2734 vaapi_encode_deps="vaapi"
2735
2736 hwupload_cuda_filter_deps="cuda"
2737 scale_npp_filter_deps="cuda libnpp"
2738
2739 nvenc_deps="cuda"
2740 nvenc_deps_any="dlopen LoadLibrary"
2741 nvenc_encoder_deps="nvenc"
2742 h264_cuvid_decoder_deps="cuda cuvid"
2743 h264_cuvid_decoder_select="h264_mp4toannexb_bsf h264_cuvid_hwaccel"
2744 h264_nvenc_encoder_deps="nvenc"
2745 h264_qsv_decoder_deps="libmfx"
2746 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2747 h264_qsv_encoder_deps="libmfx"
2748 h264_qsv_encoder_select="qsvenc"
2749 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2750 h264_vaapi_encoder_select="vaapi_encode golomb"
2751
2752 hevc_cuvid_decoder_deps="cuda cuvid"
2753 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf hevc_cuvid_hwaccel"
2754 hevc_nvenc_encoder_deps="nvenc"
2755 hevc_qsv_decoder_deps="libmfx"
2756 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2757 hevc_qsv_encoder_deps="libmfx"
2758 hevc_qsv_encoder_select="qsvenc"
2759 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2760 hevc_vaapi_encoder_select="vaapi_encode golomb"
2761 mjpeg_cuvid_decoder_deps="cuda cuvid"
2762 mjpeg_cuvid_decoder_select="mjpeg_cuvid_hwaccel"
2763 mpeg1_cuvid_decoder_deps="cuda cuvid"
2764 mpeg1_cuvid_decoder_select="mpeg1_cuvid_hwaccel"
2765 mpeg2_cuvid_decoder_deps="cuda cuvid"
2766 mpeg2_cuvid_decoder_select="mpeg2_cuvid_hwaccel"
2767 mpeg2_qsv_decoder_deps="libmfx"
2768 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2769 mpeg2_qsv_encoder_deps="libmfx"
2770 mpeg2_qsv_encoder_select="qsvenc"
2771 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2772 mpeg2_vaapi_encoder_select="vaapi_encode"
2773 mpeg4_cuvid_decoder_deps="cuda cuvid"
2774 mpeg4_cuvid_decoder_select="mpeg4_cuvid_hwaccel"
2775 nvenc_h264_encoder_deps="nvenc"
2776 nvenc_hevc_encoder_deps="nvenc"
2777
2778 vc1_cuvid_decoder_deps="cuda cuvid"
2779 vc1_cuvid_decoder_select="vc1_cuvid_hwaccel"
2780 vp8_cuvid_decoder_deps="cuda cuvid"
2781 vp8_cuvid_decoder_select="vp8_cuvid_hwaccel"
2782 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2783 vp8_vaapi_encoder_select="vaapi_encode"
2784 vp9_cuvid_decoder_deps="cuda cuvid"
2785 vp9_cuvid_decoder_select="vp9_cuvid_hwaccel"
2786
2787 # parsers
2788 h264_parser_select="golomb h264dsp h264parse"
2789 hevc_parser_select="golomb"
2790 mpegvideo_parser_select="mpegvideo"
2791 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2792 vc1_parser_select="vc1dsp"
2793
2794 # bitstream_filters
2795 mjpeg2jpeg_bsf_select="jpegtables"
2796
2797 # external libraries
2798 aac_at_decoder_deps="audiotoolbox"
2799 ac3_at_decoder_deps="audiotoolbox"
2800 ac3_at_decoder_select="ac3_parser"
2801 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2802 alac_at_decoder_deps="audiotoolbox"
2803 amr_nb_at_decoder_deps="audiotoolbox"
2804 avisynth_deps_any="dlopen LoadLibrary"
2805 avisynth_demuxer_deps="avisynth"
2806 avisynth_demuxer_select="riffdec"
2807 eac3_at_decoder_deps="audiotoolbox"
2808 eac3_at_decoder_select="ac3_parser"
2809 gsm_ms_at_decoder_deps="audiotoolbox"
2810 ilbc_at_decoder_deps="audiotoolbox"
2811 mp1_at_decoder_deps="audiotoolbox"
2812 mp2_at_decoder_deps="audiotoolbox"
2813 mp3_at_decoder_deps="audiotoolbox"
2814 pcm_alaw_at_decoder_deps="audiotoolbox"
2815 pcm_mulaw_at_decoder_deps="audiotoolbox"
2816 qdmc_at_decoder_deps="audiotoolbox"
2817 qdm2_at_decoder_deps="audiotoolbox"
2818 aac_at_encoder_deps="audiotoolbox"
2819 aac_at_encoder_select="audio_frame_queue"
2820 alac_at_encoder_deps="audiotoolbox"
2821 alac_at_encoder_select="audio_frame_queue"
2822 ilbc_at_encoder_deps="audiotoolbox"
2823 ilbc_at_encoder_select="audio_frame_queue"
2824 pcm_alaw_at_encoder_deps="audiotoolbox"
2825 pcm_alaw_at_encoder_select="audio_frame_queue"
2826 pcm_mulaw_at_encoder_deps="audiotoolbox"
2827 pcm_mulaw_at_encoder_select="audio_frame_queue"
2828 chromaprint_muxer_deps="chromaprint"
2829 h264_videotoolbox_encoder_deps="videotoolbox_encoder pthreads"
2830 libcelt_decoder_deps="libcelt"
2831 libfdk_aac_decoder_deps="libfdk_aac"
2832 libfdk_aac_encoder_deps="libfdk_aac"
2833 libfdk_aac_encoder_select="audio_frame_queue"
2834 libgme_demuxer_deps="libgme"
2835 libgsm_decoder_deps="libgsm"
2836 libgsm_encoder_deps="libgsm"
2837 libgsm_ms_decoder_deps="libgsm"
2838 libgsm_ms_encoder_deps="libgsm"
2839 libilbc_decoder_deps="libilbc"
2840 libilbc_encoder_deps="libilbc"
2841 libkvazaar_encoder_deps="libkvazaar"
2842 libmodplug_demuxer_deps="libmodplug"
2843 libmp3lame_encoder_deps="libmp3lame"
2844 libmp3lame_encoder_select="audio_frame_queue"
2845 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2846 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2847 libopencore_amrnb_encoder_select="audio_frame_queue"
2848 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2849 libopenh264_decoder_deps="libopenh264"
2850 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2851 libopenh264_encoder_deps="libopenh264"
2852 libopenjpeg_decoder_deps="libopenjpeg"
2853 libopenjpeg_encoder_deps="libopenjpeg"
2854 libopenmpt_demuxer_deps="libopenmpt"
2855 libopus_decoder_deps="libopus"
2856 libopus_encoder_deps="libopus"
2857 libopus_encoder_select="audio_frame_queue"
2858 libschroedinger_decoder_deps="libschroedinger"
2859 libschroedinger_encoder_deps="libschroedinger"
2860 libshine_encoder_deps="libshine"
2861 libshine_encoder_select="audio_frame_queue"
2862 libspeex_decoder_deps="libspeex"
2863 libspeex_encoder_deps="libspeex"
2864 libspeex_encoder_select="audio_frame_queue"
2865 libtheora_encoder_deps="libtheora"
2866 libtwolame_encoder_deps="libtwolame"
2867 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2868 libvorbis_decoder_deps="libvorbis"
2869 libvorbis_encoder_deps="libvorbis"
2870 libvorbis_encoder_select="audio_frame_queue"
2871 libvpx_vp8_decoder_deps="libvpx"
2872 libvpx_vp8_encoder_deps="libvpx"
2873 libvpx_vp9_decoder_deps="libvpx"
2874 libvpx_vp9_encoder_deps="libvpx"
2875 libwavpack_encoder_deps="libwavpack"
2876 libwebp_encoder_deps="libwebp"
2877 libwebp_anim_encoder_deps="libwebp"
2878 libx262_encoder_deps="libx262"
2879 libx264_encoder_deps="libx264"
2880 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2881 libx264rgb_encoder_select="libx264_encoder"
2882 libx265_encoder_deps="libx265"
2883 libxavs_encoder_deps="libxavs"
2884 libxvid_encoder_deps="libxvid"
2885 libzvbi_teletext_decoder_deps="libzvbi"
2886 videotoolbox_deps="VideoToolbox_VideoToolbox_h"
2887 videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework CoreVideo"
2888 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2889 videotoolbox_encoder_suggest="vda_framework vt_bt2020"
2890 vt_bt2020_deps="kCVImageBufferColorPrimaries_ITU_R_2020"
2891
2892 # demuxers / muxers
2893 ac3_demuxer_select="ac3_parser"
2894 aiff_muxer_select="iso_media"
2895 asf_demuxer_select="riffdec"
2896 asf_o_demuxer_select="riffdec"
2897 asf_muxer_select="riffenc"
2898 asf_stream_muxer_select="asf_muxer"
2899 avi_demuxer_select="iso_media riffdec exif"
2900 avi_muxer_select="riffenc"
2901 caf_demuxer_select="iso_media riffdec"
2902 caf_muxer_select="iso_media"
2903 dash_muxer_select="mp4_muxer"
2904 dirac_demuxer_select="dirac_parser"
2905 dts_demuxer_select="dca_parser"
2906 dtshd_demuxer_select="dca_parser"
2907 dv_demuxer_select="dvprofile"
2908 dv_muxer_select="dvprofile"
2909 dxa_demuxer_select="riffdec"
2910 eac3_demuxer_select="ac3_parser"
2911 f4v_muxer_select="mov_muxer"
2912 fifo_muxer_deps="threads"
2913 flac_demuxer_select="flac_parser"
2914 hds_muxer_select="flv_muxer"
2915 hls_muxer_select="mpegts_muxer"
2916 image2_alias_pix_demuxer_select="image2_demuxer"
2917 image2_brender_pix_demuxer_select="image2_demuxer"
2918 ipod_muxer_select="mov_muxer"
2919 ismv_muxer_select="mov_muxer"
2920 libnut_demuxer_deps="libnut"
2921 libnut_muxer_deps="libnut"
2922 matroska_audio_muxer_select="matroska_muxer"
2923 matroska_demuxer_select="iso_media riffdec"
2924 matroska_demuxer_suggest="bzlib lzo zlib"
2925 matroska_muxer_select="iso_media riffenc"
2926 mmf_muxer_select="riffenc"
2927 mov_demuxer_select="iso_media riffdec"
2928 mov_demuxer_suggest="zlib"
2929 mov_muxer_select="iso_media riffenc rtpenc_chain"
2930 mp3_demuxer_select="mpegaudio_parser"
2931 mp4_muxer_select="mov_muxer"
2932 mpegts_demuxer_select="iso_media"
2933 mpegts_muxer_select="adts_muxer latm_muxer"
2934 mpegtsraw_demuxer_select="mpegts_demuxer"
2935 mxf_d10_muxer_select="mxf_muxer"
2936 mxf_opatom_muxer_select="mxf_muxer"
2937 nut_muxer_select="riffenc"
2938 nuv_demuxer_select="riffdec"
2939 oga_muxer_select="ogg_muxer"
2940 ogg_demuxer_select="dirac_parse"
2941 ogv_muxer_select="ogg_muxer"
2942 opus_muxer_select="ogg_muxer"
2943 psp_muxer_select="mov_muxer"
2944 rtp_demuxer_select="sdp_demuxer"
2945 rtp_muxer_select="golomb"
2946 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2947 rtsp_demuxer_select="http_protocol rtpdec"
2948 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2949 sap_demuxer_select="sdp_demuxer"
2950 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2951 sdp_demuxer_select="rtpdec"
2952 smoothstreaming_muxer_select="ismv_muxer"
2953 spdif_muxer_select="aac_parser"
2954 spx_muxer_select="ogg_muxer"
2955 swf_demuxer_suggest="zlib"
2956 tak_demuxer_select="tak_parser"
2957 tg2_muxer_select="mov_muxer"
2958 tgp_muxer_select="mov_muxer"
2959 vobsub_demuxer_select="mpegps_demuxer"
2960 w64_demuxer_select="wav_demuxer"
2961 w64_muxer_select="wav_muxer"
2962 wav_demuxer_select="riffdec"
2963 wav_muxer_select="riffenc"
2964 webm_muxer_select="iso_media riffenc"
2965 webm_dash_manifest_demuxer_select="matroska_demuxer"
2966 wtv_demuxer_select="mpegts_demuxer riffdec"
2967 wtv_muxer_select="mpegts_muxer riffenc"
2968 xmv_demuxer_select="riffdec"
2969 xwma_demuxer_select="riffdec"
2970
2971 # indevs / outdevs
2972 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2973 alsa_outdev_deps="alsa_asoundlib_h"
2974 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2975 avfoundation_indev_select="avfoundation"
2976 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2977 caca_outdev_deps="libcaca"
2978 decklink_indev_deps="decklink pthreads"
2979 decklink_indev_extralibs="-lstdc++"
2980 decklink_outdev_deps="decklink pthreads"
2981 decklink_outdev_extralibs="-lstdc++"
2982 dshow_indev_deps="IBaseFilter"
2983 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
2984 dv1394_indev_deps="dv1394"
2985 dv1394_indev_select="dv_demuxer"
2986 fbdev_indev_deps="linux_fb_h"
2987 fbdev_outdev_deps="linux_fb_h"
2988 gdigrab_indev_deps="CreateDIBSection"
2989 gdigrab_indev_extralibs="-lgdi32"
2990 gdigrab_indev_select="bmp_decoder"
2991 iec61883_indev_deps="libiec61883"
2992 jack_indev_deps="jack_jack_h"
2993 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2994 lavfi_indev_deps="avfilter"
2995 libcdio_indev_deps="libcdio"
2996 libdc1394_indev_deps="libdc1394"
2997 libv4l2_indev_deps="libv4l2"
2998 openal_indev_deps="openal"
2999 opengl_outdev_deps="opengl"
3000 oss_indev_deps_any="soundcard_h sys_soundcard_h"
3001 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
3002 pulse_indev_deps="libpulse"
3003 pulse_outdev_deps="libpulse"
3004 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
3005 qtkit_indev_select="qtkit"
3006 sdl2_outdev_deps="sdl2"
3007 sndio_indev_deps="sndio_h"
3008 sndio_outdev_deps="sndio_h"
3009 v4l_indev_deps="linux_videodev_h"
3010 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3011 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3012 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
3013 vfwcap_indev_extralibs="-lavicap32"
3014 x11grab_indev_deps="x11grab"
3015 x11grab_xcb_indev_deps="libxcb"
3016 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3017 xv_outdev_extralibs="-lXv -lX11 -lXext"
3018
3019 # protocols
3020 async_protocol_deps="threads"
3021 bluray_protocol_deps="libbluray"
3022 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
3023 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3024 ffrtmpcrypt_protocol_select="tcp_protocol"
3025 ffrtmphttp_protocol_deps="!librtmp_protocol"
3026 ffrtmphttp_protocol_select="http_protocol"
3027 ftp_protocol_select="tcp_protocol"
3028 gopher_protocol_select="network"
3029 http_protocol_select="tcp_protocol"
3030 httpproxy_protocol_select="tcp_protocol"
3031 https_protocol_select="tls_protocol"
3032 icecast_protocol_select="http_protocol"
3033 librtmp_protocol_deps="librtmp"
3034 librtmpe_protocol_deps="librtmp"
3035 librtmps_protocol_deps="librtmp"
3036 librtmpt_protocol_deps="librtmp"
3037 librtmpte_protocol_deps="librtmp"
3038 libsmbclient_protocol_deps="libsmbclient gplv3"
3039 libssh_protocol_deps="libssh"
3040 mmsh_protocol_select="http_protocol"
3041 mmst_protocol_select="network"
3042 rtmp_protocol_deps="!librtmp_protocol"
3043 rtmp_protocol_select="tcp_protocol"
3044 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3045 rtmps_protocol_deps="!librtmp_protocol"
3046 rtmps_protocol_select="tls_protocol"
3047 rtmpt_protocol_select="ffrtmphttp_protocol"
3048 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3049 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3050 rtp_protocol_select="udp_protocol"
3051 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3052 sctp_protocol_select="network"
3053 srtp_protocol_select="rtp_protocol srtp"
3054 tcp_protocol_select="network"
3055 tls_gnutls_protocol_deps="gnutls !tls_schannel_protocol !tls_securetransport_protocol"
3056 tls_gnutls_protocol_select="tcp_protocol"
3057 tls_openssl_protocol_deps="openssl !tls_schannel_protocol !tls_securetransport_protocol !tls_gnutls_protocol"
3058 tls_openssl_protocol_select="tcp_protocol"
3059 tls_schannel_protocol_deps="schannel"
3060 tls_schannel_protocol_select="tcp_protocol"
3061 tls_securetransport_protocol_deps="securetransport"
3062 tls_securetransport_protocol_select="tcp_protocol"
3063 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
3064 udp_protocol_select="network"
3065 udplite_protocol_select="network"
3066 unix_protocol_deps="sys_un_h"
3067 unix_protocol_select="network"
3068
3069 # filters
3070 afftfilt_filter_deps="avcodec"
3071 afftfilt_filter_select="fft"
3072 amovie_filter_deps="avcodec avformat"
3073 aresample_filter_deps="swresample"
3074 ass_filter_deps="libass"
3075 asyncts_filter_deps="avresample"
3076 atempo_filter_deps="avcodec"
3077 atempo_filter_select="rdft"
3078 azmq_filter_deps="libzmq"
3079 blackframe_filter_deps="gpl"
3080 boxblur_filter_deps="gpl"
3081 bs2b_filter_deps="libbs2b"
3082 colormatrix_filter_deps="gpl"
3083 cover_rect_filter_deps="avcodec avformat gpl"
3084 cropdetect_filter_deps="gpl"
3085 delogo_filter_deps="gpl"
3086 deshake_filter_select="pixelutils"
3087 drawtext_filter_deps="libfreetype"
3088 eq_filter_deps="gpl"
3089 fftfilt_filter_deps="avcodec"
3090 fftfilt_filter_select="rdft"
3091 find_rect_filter_deps="avcodec avformat gpl"
3092 firequalizer_filter_deps="avcodec"
3093 firequalizer_filter_select="rdft"
3094 flite_filter_deps="libflite"
3095 framerate_filter_select="pixelutils"
3096 frei0r_filter_deps="frei0r dlopen"
3097 frei0r_src_filter_deps="frei0r dlopen"
3098 fspp_filter_deps="gpl"
3099 geq_filter_deps="gpl"
3100 histeq_filter_deps="gpl"
3101 hqdn3d_filter_deps="gpl"
3102 interlace_filter_deps="gpl"
3103 kerndeint_filter_deps="gpl"
3104 ladspa_filter_deps="ladspa dlopen"
3105 mcdeint_filter_deps="avcodec gpl"
3106 movie_filter_deps="avcodec avformat"
3107 mpdecimate_filter_deps="gpl"
3108 mpdecimate_filter_select="pixelutils"
3109 mptestsrc_filter_deps="gpl"
3110 negate_filter_deps="lut_filter"
3111 nnedi_filter_deps="gpl"
3112 ocr_filter_deps="libtesseract"
3113 ocv_filter_deps="libopencv"
3114 owdenoise_filter_deps="gpl"
3115 pan_filter_deps="swresample"
3116 perspective_filter_deps="gpl"
3117 phase_filter_deps="gpl"
3118 pp7_filter_deps="gpl"
3119 pp_filter_deps="gpl postproc"
3120 pullup_filter_deps="gpl"
3121 removelogo_filter_deps="avcodec avformat swscale"
3122 repeatfields_filter_deps="gpl"
3123 resample_filter_deps="avresample"
3124 rubberband_filter_deps="librubberband"
3125 sab_filter_deps="gpl swscale"
3126 scale2ref_filter_deps="swscale"
3127 scale_filter_deps="swscale"
3128 select_filter_select="pixelutils"
3129 showcqt_filter_deps="avcodec avformat swscale"
3130 showcqt_filter_select="fft"
3131 showfreqs_filter_deps="avcodec"
3132 showfreqs_filter_select="fft"
3133 showspectrum_filter_deps="avcodec"
3134 showspectrum_filter_select="fft"
3135 showspectrumpic_filter_deps="avcodec"
3136 showspectrumpic_filter_select="fft"
3137 smartblur_filter_deps="gpl swscale"
3138 sofalizer_filter_deps="netcdf avcodec"
3139 sofalizer_filter_select="fft"
3140 spectrumsynth_filter_deps="avcodec"
3141 spectrumsynth_filter_select="fft"
3142 spp_filter_deps="gpl avcodec"
3143 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3144 stereo3d_filter_deps="gpl"
3145 subtitles_filter_deps="avformat avcodec libass"
3146 super2xsai_filter_deps="gpl"
3147 pixfmts_super2xsai_test_deps="super2xsai_filter"
3148 tinterlace_filter_deps="gpl"
3149 tinterlace_merge_test_deps="tinterlace_filter"
3150 tinterlace_pad_test_deps="tinterlace_filter"
3151 uspp_filter_deps="gpl avcodec"
3152 vaguedenoiser_filter_deps="gpl"
3153 vidstabdetect_filter_deps="libvidstab"
3154 vidstabtransform_filter_deps="libvidstab"
3155 zmq_filter_deps="libzmq"
3156 zoompan_filter_deps="swscale"
3157 zscale_filter_deps="libzimg"
3158 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3159
3160 # examples
3161 avio_dir_cmd_deps="avformat avutil"
3162 avio_reading_deps="avformat avcodec avutil"
3163 decoding_encoding_example_deps="avcodec avformat avutil"
3164 demuxing_decoding_example_deps="avcodec avformat avutil"
3165 extract_mvs_example_deps="avcodec avformat avutil"
3166 filter_audio_example_deps="avfilter avutil"
3167 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3168 filtering_video_example_deps="avfilter avcodec avformat avutil"
3169 http_multiclient_example_deps="avformat avutil fork"
3170 metadata_example_deps="avformat avutil"
3171 muxing_example_deps="avcodec avformat avutil swscale"
3172 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
3173 remuxing_example_deps="avcodec avformat avutil"
3174 resampling_audio_example_deps="avutil swresample"
3175 scaling_video_example_deps="avutil swscale"
3176 transcode_aac_example_deps="avcodec avformat swresample"
3177 transcoding_example_deps="avfilter avcodec avformat avutil"
3178
3179 # libraries, in linking order
3180 avcodec_deps="avutil"
3181 avdevice_deps="avformat avcodec avutil"
3182 avfilter_deps="avutil"
3183 avformat_deps="avcodec avutil"
3184 avresample_deps="avutil"
3185 postproc_deps="avutil gpl"
3186 swresample_deps="avutil"
3187 swscale_deps="avutil"
3188
3189 # programs
3190 ffmpeg_deps="avcodec avfilter avformat swresample"
3191 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3192                null_filter
3193                setpts_filter trim_filter"
3194 ffplay_deps="avcodec avformat swscale swresample sdl2"
3195 ffplay_libs='$sdl2_libs'
3196 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3197 ffprobe_deps="avcodec avformat"
3198 ffserver_deps="avformat fork sarestart"
3199 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3200
3201 # documentation
3202 podpages_deps="perl"
3203 manpages_deps="perl pod2man"
3204 htmlpages_deps="perl"
3205 htmlpages_deps_any="makeinfo_html texi2html"
3206 txtpages_deps="perl makeinfo"
3207 doc_deps_any="manpages htmlpages podpages txtpages"
3208
3209 # default parameters
3210
3211 logfile="config.log"
3212
3213 # installation paths
3214 prefix_default="/usr/local"
3215 bindir_default='${prefix}/bin'
3216 datadir_default='${prefix}/share/ffmpeg'
3217 docdir_default='${prefix}/share/doc/ffmpeg'
3218 incdir_default='${prefix}/include'
3219 libdir_default='${prefix}/lib'
3220 mandir_default='${prefix}/share/man'
3221
3222 # toolchain
3223 ar_default="ar"
3224 cc_default="gcc"
3225 cxx_default="g++"
3226 host_cc_default="gcc"
3227 cp_f="cp -f"
3228 doxygen_default="doxygen"
3229 install="install"
3230 ln_s_default="ln -s -f"
3231 nm_default="nm -g"
3232 objformat="elf"
3233 pkg_config_default=pkg-config
3234 ranlib_default="ranlib"
3235 strip_default="strip"
3236 version_script='--version-script'
3237 yasmexe_default="yasm"
3238 windres_default="windres"
3239
3240 # OS
3241 target_os_default=$(tolower $(uname -s))
3242 host_os=$target_os_default
3243
3244 # machine
3245 if test "$target_os_default" = aix; then
3246     arch_default=$(uname -p)
3247     strip_default="strip -X32_64"
3248 else
3249     arch_default=$(uname -m)
3250 fi
3251 cpu="generic"
3252 intrinsics="none"
3253
3254 # configurable options
3255 enable $PROGRAM_LIST
3256 enable $DOCUMENT_LIST
3257 enable $EXAMPLE_LIST
3258 enable $(filter_out avresample $LIBRARY_LIST)
3259 enable stripping
3260
3261 enable asm
3262 enable debug
3263 enable doc
3264 enable faan faandct faanidct
3265 enable optimizations
3266 enable runtime_cpudetect
3267 enable safe_bitstream_reader
3268 enable static
3269 enable swscale_alpha
3270 enable valgrind_backtrace
3271
3272 sws_max_filter_size_default=256
3273 set_default sws_max_filter_size
3274
3275 # build settings
3276 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3277 LIBPREF="lib"
3278 LIBSUF=".a"
3279 FULLNAME='$(NAME)$(BUILDSUF)'
3280 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3281 SLIBPREF="lib"
3282 SLIBSUF=".so"
3283 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3284 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3285 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3286 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3287 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3288 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3289 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3290
3291 asflags_filter=echo
3292 cflags_filter=echo
3293 ldflags_filter=echo
3294
3295 AS_C='-c'
3296 AS_O='-o $@'
3297 CC_C='-c'
3298 CC_E='-E -o $@'
3299 CC_O='-o $@'
3300 CXX_C='-c'
3301 CXX_O='-o $@'
3302 OBJCC_C='-c'
3303 OBJCC_E='-E -o $@'
3304 OBJCC_O='-o $@'
3305 LD_O='-o $@'
3306 LD_LIB='-l%'
3307 LD_PATH='-L'
3308 HOSTCC_C='-c'
3309 HOSTCC_E='-E -o $@'
3310 HOSTCC_O='-o $@'
3311 HOSTLD_O='-o $@'
3312
3313 host_libs='-lm'
3314 host_cflags_filter=echo
3315 host_ldflags_filter=echo
3316
3317 target_path='$(CURDIR)'
3318
3319 # since the object filename is not given with the -MM flag, the compiler
3320 # is only able to print the basename, and we must add the path ourselves
3321 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3322 DEPFLAGS='-MM'
3323
3324 # find source path
3325 if test -f configure; then
3326     source_path=.
3327 else
3328     source_path=$(cd $(dirname "$0"); pwd)
3329     case "$source_path" in
3330         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3331     esac
3332     test -e "$source_path/config.h" &&
3333         die "Out of tree builds are impossible with config.h in source dir."
3334 fi
3335
3336 for v in "$@"; do
3337     r=${v#*=}
3338     l=${v%"$r"}
3339     r=$(sh_quote "$r")
3340     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3341 done
3342
3343 find_things(){
3344     thing=$1
3345     pattern=$2
3346     file=$source_path/$3
3347     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3348 }
3349
3350 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3351 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3352 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3353 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3354 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3355 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3356 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3357 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3358 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3359
3360 find_things_extern(){
3361     thing=$1
3362     pattern=$2
3363     file=$source_path/$3
3364     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3365 }
3366
3367 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3368 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3369
3370 ALL_COMPONENTS="
3371     $BSF_LIST
3372     $DECODER_LIST
3373     $DEMUXER_LIST
3374     $ENCODER_LIST
3375     $FILTER_LIST
3376     $HWACCEL_LIST
3377     $INDEV_LIST
3378     $MUXER_LIST
3379     $OUTDEV_LIST
3380     $PARSER_LIST
3381     $PROTOCOL_LIST
3382 "
3383
3384 for n in $COMPONENT_LIST; do
3385     v=$(toupper ${n%s})_LIST
3386     eval enable \$$v
3387     eval ${n}_if_any="\$$v"
3388 done
3389
3390 enable $ARCH_EXT_LIST
3391
3392 die_unknown(){
3393     echo "Unknown option \"$1\"."
3394     echo "See $0 --help for available options."
3395     exit 1
3396 }
3397
3398 print_in_columns() {
3399     cols=$(expr $ncols / 24)
3400     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3401 }
3402
3403 show_list() {
3404     suffix=_$1
3405     shift
3406     echo $* | sed s/$suffix//g | print_in_columns
3407     exit 0
3408 }
3409
3410 rand_list(){
3411     IFS=', '
3412     set -- $*
3413     unset IFS
3414     for thing; do
3415         comp=${thing%:*}
3416         prob=${thing#$comp}
3417         prob=${prob#:}
3418         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3419         echo "prob ${prob:-0.5}"
3420         printf '%s\n' $comp
3421     done
3422 }
3423
3424 do_random(){
3425     action=$1
3426     shift
3427     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3428     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3429 }
3430
3431 for opt do
3432     optval="${opt#*=}"
3433     case "$opt" in
3434         --extra-ldflags=*)
3435             add_ldflags $optval
3436         ;;
3437         --extra-ldexeflags=*)
3438             add_ldexeflags $optval
3439         ;;
3440         --extra-ldlibflags=*)
3441             add_ldlibflags $optval
3442         ;;
3443         --extra-libs=*)
3444             add_extralibs $optval
3445         ;;
3446         --disable-devices)
3447             disable $INDEV_LIST $OUTDEV_LIST
3448         ;;
3449         --enable-debug=*)
3450             debuglevel="$optval"
3451         ;;
3452         --disable-programs)
3453             disable $PROGRAM_LIST
3454         ;;
3455         --disable-everything)
3456             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3457         ;;
3458         --disable-all)
3459             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3460             disable $LIBRARY_LIST $PROGRAM_LIST doc
3461             enable avutil
3462         ;;
3463         --enable-random|--disable-random)
3464             action=${opt%%-random}
3465             do_random ${action#--} $COMPONENT_LIST
3466         ;;
3467         --enable-random=*|--disable-random=*)
3468             action=${opt%%-random=*}
3469             do_random ${action#--} $optval
3470         ;;
3471         --enable-*=*|--disable-*=*)
3472             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3473             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3474             eval list=\$$(toupper $thing)_LIST
3475             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3476             list=$(filter "$name" $list)
3477             [ "$list" = "" ] && warn "Option $opt did not match anything"
3478             $action $list
3479         ;;
3480         --enable-?*|--disable-?*)
3481             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3482             if is_in $option $COMPONENT_LIST; then
3483                 test $action = disable && action=unset
3484                 eval $action \$$(toupper ${option%s})_LIST
3485             elif is_in $option $CMDLINE_SELECT; then
3486                 $action $option
3487             else
3488                 die_unknown $opt
3489             fi
3490         ;;
3491         --list-*)
3492             NAME="${opt#--list-}"
3493             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3494             NAME=${NAME%s}
3495             eval show_list $NAME \$$(toupper $NAME)_LIST
3496         ;;
3497         --help|-h) show_help
3498         ;;
3499         --fatal-warnings) enable fatal_warnings
3500         ;;
3501         *)
3502             optname="${opt%%=*}"
3503             optname="${optname#--}"
3504             optname=$(echo "$optname" | sed 's/-/_/g')
3505             if is_in $optname $CMDLINE_SET; then
3506                 eval $optname='$optval'
3507             elif is_in $optname $CMDLINE_APPEND; then
3508                 append $optname "$optval"
3509             else
3510                 die_unknown $opt
3511             fi
3512         ;;
3513     esac
3514 done
3515
3516 for e in $env; do
3517     eval "export $e"
3518 done
3519
3520 # Mark specifically enabled, but normally autodetected libraries as requested.
3521 for lib in $AUTODETECT_LIBS; do
3522     enabled $lib && request $lib
3523 done
3524
3525 # Enable platform codecs by default.
3526 enable_weak audiotoolbox
3527
3528 # Enable hwaccels by default.
3529 enable_weak d3d11va dxva2 vaapi vda vdpau videotoolbox_hwaccel xvmc
3530 enable_weak xlib
3531
3532 enable_weak cuda cuvid nvenc vda_framework videotoolbox videotoolbox_encoder
3533
3534 disabled logging && logfile=/dev/null
3535
3536 # Disable all the library-specific components if the library itself
3537 # is disabled, see AVCODEC_LIST and following _LIST variables.
3538
3539 disable_components(){
3540     disabled ${1} && disable $(
3541         eval components="\$$(toupper ${1})_COMPONENTS"
3542         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3543     )
3544 }
3545
3546 map 'disable_components $v' $LIBRARY_LIST
3547
3548 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3549 set >> $logfile
3550
3551 test -n "$valgrind" && toolchain="valgrind-memcheck"
3552
3553 case "$toolchain" in
3554     *-asan)
3555         cc_default="${toolchain%-asan}"
3556         add_cflags  -fsanitize=address
3557         add_ldflags -fsanitize=address
3558     ;;
3559     *-msan)
3560         cc_default="${toolchain%-msan}"
3561         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3562         add_ldflags -fsanitize=memory
3563     ;;
3564     *-tsan)
3565         cc_default="${toolchain%-tsan}"
3566         add_cflags  -fsanitize=thread -fPIE
3567         add_ldflags -fsanitize=thread -pie
3568         case "$toolchain" in
3569             gcc-tsan)
3570                 add_cflags  -fPIC
3571                 add_ldflags -fPIC
3572                 ;;
3573         esac
3574     ;;
3575     *-usan)
3576         cc_default="${toolchain%-usan}"
3577         add_cflags  -fsanitize=undefined
3578         add_ldflags -fsanitize=undefined
3579     ;;
3580     valgrind-*)
3581         target_exec_default="valgrind"
3582         case "$toolchain" in
3583             valgrind-massif)
3584                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3585                 ;;
3586             valgrind-memcheck)
3587                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3588                 ;;
3589         esac
3590     ;;
3591     msvc)
3592         # Check whether the current MSVC version needs the C99 converter.
3593         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3594         # support enough of C99 to build ffmpeg. Default to the new
3595         # behaviour if the regexp was unable to match anything, since this
3596         # successfully parses the version number of existing supported
3597         # versions that require the converter (MSVC 2010 and 2012).
3598         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3599         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3600             cc_default="cl"
3601         else
3602             cc_default="c99wrap cl"
3603         fi
3604         ld_default="$source_path/compat/windows/mslink"
3605         nm_default="dumpbin -symbols"
3606         ar_default="lib"
3607         case "$arch" in
3608         arm*)
3609             as_default="armasm"
3610             ;;
3611         esac
3612         target_os_default="win32"
3613         # Use a relative path for TMPDIR. This makes sure all the
3614         # ffconf temp files are written with a relative path, avoiding
3615         # issues with msys/win32 path conversion for MSVC parameters
3616         # such as -Fo<file> or -out:<file>.
3617         TMPDIR=.
3618     ;;
3619     icl)
3620         cc_default="icl"
3621         ld_default="xilink"
3622         nm_default="dumpbin -symbols"
3623         ar_default="xilib"
3624         target_os_default="win32"
3625         TMPDIR=.
3626     ;;
3627     gcov)
3628         add_cflags  -fprofile-arcs -ftest-coverage
3629         add_ldflags -fprofile-arcs -ftest-coverage
3630     ;;
3631     llvm-cov)
3632         add_cflags -fprofile-arcs -ftest-coverage
3633         add_ldflags --coverage
3634     ;;
3635     hardened)
3636         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3637         add_cflags   -fno-strict-overflow -fstack-protector-all
3638         add_ldflags  -Wl,-z,relro -Wl,-z,now
3639         add_cflags   -fPIE
3640         add_ldexeflags -fPIE -pie
3641     ;;
3642     ?*)
3643         die "Unknown toolchain $toolchain"
3644     ;;
3645 esac
3646
3647 test -n "$cross_prefix" && enable cross_compile
3648
3649 if enabled cross_compile; then
3650     test -n "$arch" && test -n "$target_os" ||
3651         die "Must specify target arch and OS when cross-compiling"
3652 fi
3653
3654 ar_default="${cross_prefix}${ar_default}"
3655 cc_default="${cross_prefix}${cc_default}"
3656 cxx_default="${cross_prefix}${cxx_default}"
3657 nm_default="${cross_prefix}${nm_default}"
3658 pkg_config_default="${cross_prefix}${pkg_config_default}"
3659 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3660     ranlib_default="${cross_prefix}${ranlib_default} -D"
3661 else
3662     ranlib_default="${cross_prefix}${ranlib_default}"
3663 fi
3664 strip_default="${cross_prefix}${strip_default}"
3665 windres_default="${cross_prefix}${windres_default}"
3666
3667 sysinclude_default="${sysroot}/usr/include"
3668
3669 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3670     target_exec target_os yasmexe
3671 enabled cross_compile || host_cc_default=$cc
3672 set_default host_cc
3673
3674 pkg_config_fail_message=""
3675 if ! $pkg_config --version >/dev/null 2>&1; then
3676     warn "$pkg_config not found, library detection may fail."
3677     pkg_config=false
3678 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3679     pkg_config_fail_message="
3680 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3681 fi
3682
3683 if test $doxygen != $doxygen_default && \
3684   ! $doxygen --version >/dev/null 2>&1; then
3685     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3686 fi
3687
3688 exesuf() {
3689     case $1 in
3690         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3691     esac
3692 }
3693
3694 EXESUF=$(exesuf $target_os)
3695 HOSTEXESUF=$(exesuf $host_os)
3696
3697 # set temporary file name
3698 : ${TMPDIR:=$TEMPDIR}
3699 : ${TMPDIR:=$TMP}
3700 : ${TMPDIR:=/tmp}
3701
3702 if [ -n "$tempprefix" ] ; then
3703     mktemp(){
3704         echo $tempprefix.${HOSTNAME}.${UID}
3705     }
3706 elif ! check_cmd mktemp -u XXXXXX; then
3707     # simple replacement for missing mktemp
3708     # NOT SAFE FOR GENERAL USE
3709     mktemp(){
3710         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3711     }
3712 fi
3713
3714 tmpfile(){
3715     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3716         (set -C; exec > $tmp) 2>/dev/null ||
3717         die "Unable to create temporary file in $TMPDIR."
3718     append TMPFILES $tmp
3719     eval $1=$tmp
3720 }
3721
3722 trap 'rm -f -- $TMPFILES' EXIT
3723
3724 tmpfile TMPASM .asm
3725 tmpfile TMPC   .c
3726 tmpfile TMPCPP .cpp
3727 tmpfile TMPE   $EXESUF
3728 tmpfile TMPH   .h
3729 tmpfile TMPM   .m
3730 tmpfile TMPO   .o
3731 tmpfile TMPS   .S
3732 tmpfile TMPSH  .sh
3733 tmpfile TMPV   .ver
3734
3735 unset -f mktemp
3736
3737 chmod +x $TMPE
3738
3739 # make sure we can execute files in $TMPDIR
3740 cat > $TMPSH 2>> $logfile <<EOF
3741 #! /bin/sh
3742 EOF
3743 chmod +x $TMPSH >> $logfile 2>&1
3744 if ! $TMPSH >> $logfile 2>&1; then
3745     cat <<EOF
3746 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3747 variable to another directory and make sure that it is not mounted noexec.
3748 EOF
3749     die "Sanity test failed."
3750 fi
3751
3752 armasm_flags(){
3753     for flag; do
3754         case $flag in
3755             # Filter out MSVC cl.exe options from cflags that shouldn't
3756             # be passed to gas-preprocessor
3757             -M[TD]*)                                            ;;
3758             *)                  echo $flag                      ;;
3759         esac
3760    done
3761 }
3762
3763 ccc_flags(){
3764     for flag; do
3765         case $flag in
3766             -std=c99)           echo -c99                       ;;
3767             -mcpu=*)            echo -arch ${flag#*=}           ;;
3768             -mieee)             echo -ieee                      ;;
3769             -O*|-fast)          echo $flag                      ;;
3770             -fno-math-errno)    echo -assume nomath_errno       ;;
3771             -g)                 echo -g3                        ;;
3772             -Wall)              echo -msg_enable level2         ;;
3773             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3774             -Wl,*)              echo $flag                      ;;
3775             -f*|-W*)                                            ;;
3776             *)                  echo $flag                      ;;
3777         esac
3778    done
3779 }
3780
3781 cparser_flags(){
3782     for flag; do
3783         case $flag in
3784             -Wno-switch)             echo -Wno-switch-enum ;;
3785             -Wno-format-zero-length) ;;
3786             -Wdisabled-optimization) ;;
3787             -Wno-pointer-sign)       echo -Wno-other ;;
3788             *)                       echo $flag ;;
3789         esac
3790     done
3791 }
3792
3793 msvc_common_flags(){
3794     for flag; do
3795         case $flag in
3796             # In addition to specifying certain flags under the compiler
3797             # specific filters, they must be specified here as well or else the
3798             # generic catch all at the bottom will print the original flag.
3799             -Wall)                ;;
3800             -std=c99)             ;;
3801             # Common flags
3802             -fomit-frame-pointer) ;;
3803             -g)                   echo -Z7 ;;
3804             -fno-math-errno)      ;;
3805             -fno-common)          ;;
3806             -fno-signed-zeros)    ;;
3807             -fPIC)                ;;
3808             -mthumb)              ;;
3809             -march=*)             ;;
3810             -lz)                  echo zlib.lib ;;
3811             -lavifil32)           echo vfw32.lib ;;
3812             -lavicap32)           echo vfw32.lib user32.lib ;;
3813             -lx264)               echo libx264.lib ;;
3814             -l*)                  echo ${flag#-l}.lib ;;
3815             -LARGEADDRESSAWARE)   echo $flag ;;
3816             -L*)                  echo -libpath:${flag#-L} ;;
3817             *)                    echo $flag ;;
3818         esac
3819     done
3820 }
3821
3822 msvc_flags(){
3823     msvc_common_flags "$@"
3824     for flag; do
3825         case $flag in
3826             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3827                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3828                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3829                                        -wd4307 \
3830                                        -wd4273 -wd4554 -wd4701 ;;
3831         esac
3832     done
3833 }
3834
3835 icl_flags(){
3836     msvc_common_flags "$@"
3837     for flag; do
3838         case $flag in
3839             # Despite what Intel's documentation says -Wall, which is supported
3840             # on Windows, does enable remarks so disable them here.
3841             -Wall)                echo $flag -Qdiag-disable:remark ;;
3842             -std=c99)             echo -Qstd=c99 ;;
3843             -flto)                echo -ipo ;;
3844         esac
3845     done
3846 }
3847
3848 icc_flags(){
3849     for flag; do
3850         case $flag in
3851             -flto)                echo -ipo ;;
3852             *)                    echo $flag ;;
3853         esac
3854     done
3855 }
3856
3857 pgi_flags(){
3858     for flag; do
3859         case $flag in
3860             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3861             -fomit-frame-pointer) echo -Mnoframe ;;
3862             -g)                   echo -gopt ;;
3863             *)                    echo $flag ;;
3864         esac
3865     done
3866 }
3867
3868 suncc_flags(){
3869     for flag; do
3870         case $flag in
3871             -march=*|-mcpu=*)
3872                 case "${flag#*=}" in
3873                     native)                   echo -xtarget=native       ;;
3874                     v9|niagara)               echo -xarch=sparc          ;;
3875                     ultrasparc)               echo -xarch=sparcvis       ;;
3876                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3877                     i586|pentium)             echo -xchip=pentium        ;;
3878                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3879                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3880                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3881                     pentium4*)          echo -xtarget=pentium4           ;;
3882                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3883                     *-sse3)             echo -xarch=sse3                 ;;
3884                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3885                     bonnell)                   echo -xarch=ssse3         ;;
3886                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3887                     westmere)                  echo -xtarget=westmere    ;;
3888                     silvermont)                echo -xarch=sse4_2        ;;
3889                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3890                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
3891                                                echo -xarch=avx           ;;
3892                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3893                     btver1)                    echo -xarch=amdsse4a      ;;
3894                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
3895                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3896                     k8|opteron|athlon64|athlon-fx)
3897                                                echo -xarch=sse2a         ;;
3898                     athlon*)                   echo -xarch=pentium_proa  ;;
3899                 esac
3900                 ;;
3901             -std=c99)             echo -xc99              ;;
3902             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3903             -fPIC)                echo -KPIC -xcode=pic32 ;;
3904             -W*,*)                echo $flag              ;;
3905             -f*-*|-W*|-mimpure-text)                      ;;
3906             -shared)              echo -G                 ;;
3907             *)                    echo $flag              ;;
3908         esac
3909     done
3910 }
3911
3912 tms470_flags(){
3913     for flag; do
3914         case $flag in
3915             -march=*|-mcpu=*)
3916                 case "${flag#*=}" in
3917                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3918                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3919                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3920                     armv6*|arm11*)          echo -mv=6   ;;
3921                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3922                                             echo -mv=5e  ;;
3923                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3924                 esac
3925                 ;;
3926             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3927             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3928             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3929             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3930             -msoft-float)   echo --float_support=vfplib       ;;
3931             -O[0-3]|-mf=*)  echo $flag                        ;;
3932             -g)             echo -g -mn                       ;;
3933             -pds=*)         echo $flag                        ;;
3934             -D*|-I*)        echo $flag                        ;;
3935             --gcc|--abi=*)  echo $flag                        ;;
3936             -me)            echo $flag                        ;;
3937         esac
3938     done
3939 }
3940
3941 probe_cc(){
3942     pfx=$1
3943     _cc=$2
3944     first=$3
3945
3946     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3947     unset _ld_o _ldflags _ld_lib _ld_path
3948     unset _depflags _DEPCMD _DEPFLAGS
3949     _flags_filter=echo
3950
3951     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3952         true # no-op to avoid reading stdin in following checks
3953     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3954         _type=llvm_gcc
3955         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3956         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3957         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3958         _cflags_speed='-O3'
3959         _cflags_size='-Os'
3960     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3961         _type=gcc
3962         gcc_version=$($_cc --version | head -n1)
3963         gcc_basever=$($_cc -dumpversion)
3964         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3965         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3966         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3967         case $gcc_basever in
3968             2) ;;
3969             2.*) ;;
3970             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
3971         esac
3972         if [ "$first" = true ]; then
3973             case $gcc_basever in
3974                 4.2*)
3975                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
3976             esac
3977         fi
3978         _cflags_speed='-O3'
3979         _cflags_size='-Os'
3980     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3981         _type=icc
3982         _ident=$($_cc --version | head -n1)
3983         _depflags='-MMD'
3984         _cflags_speed='-O3'
3985         _cflags_size='-Os'
3986         _cflags_noopt='-O1'
3987         _flags_filter=icc_flags
3988     elif $_cc -v 2>&1 | grep -q xlc; then
3989         _type=xlc
3990         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3991         _cflags_speed='-O5'
3992         _cflags_size='-O5 -qcompact'
3993     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3994         _type=ccc
3995         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3996         _DEPFLAGS='-M'
3997         _cflags_speed='-fast'
3998         _cflags_size='-O1'
3999         _flags_filter=ccc_flags
4000     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4001         test -d "$sysroot" || die "No valid sysroot specified."
4002         _type=armcc
4003         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4004         armcc_conf="$PWD/armcc.conf"
4005         $_cc --arm_linux_configure                 \
4006              --arm_linux_config_file="$armcc_conf" \
4007              --configure_sysroot="$sysroot"        \
4008              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4009              die "Error creating armcc configuration file."
4010         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4011         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4012         as_default="${cross_prefix}gcc"
4013         _depflags='-MMD'
4014         _cflags_speed='-O3'
4015         _cflags_size='-Os'
4016     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
4017         _type=tms470
4018         _ident=$($_cc -version | head -n1 | tr -s ' ')
4019         _flags='--gcc --abi=eabi -me'
4020         _cc_e='-ppl -fe=$@'
4021         _cc_o='-fe=$@'
4022         _depflags='-ppa -ppd=$(@:.o=.d)'
4023         _cflags_speed='-O3 -mf=5'
4024         _cflags_size='-O3 -mf=2'
4025         _flags_filter=tms470_flags
4026     elif $_cc -v 2>&1 | grep -q clang; then
4027         _type=clang
4028         _ident=$($_cc --version 2>/dev/null | head -n1)
4029         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4030         _cflags_speed='-O3'
4031         _cflags_size='-Os'
4032     elif $_cc -V 2>&1 | grep -q Sun; then
4033         _type=suncc
4034         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4035         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4036         _DEPFLAGS='-xM1 -xc99'
4037         _ldflags='-std=c99'
4038         _cflags_speed='-O5'
4039         _cflags_size='-O5 -xspace'
4040         _flags_filter=suncc_flags
4041     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4042         _type=pathscale
4043         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4044         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4045         _cflags_speed='-O2'
4046         _cflags_size='-Os'
4047         _flags_filter='filter_out -Wdisabled-optimization'
4048     elif $_cc -v 2>&1 | grep -q Open64; then
4049         _type=open64
4050         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4051         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4052         _cflags_speed='-O2'
4053         _cflags_size='-Os'
4054         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4055     elif $_cc -V 2>&1 | grep -q Portland; then
4056         _type=pgi
4057         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
4058         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
4059         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
4060         _cflags_size="-O2 -Munroll=c:1 $opt_common"
4061         _cflags_noopt="-O"
4062         _flags_filter=pgi_flags
4063     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4064         _type=armasm
4065         _ident=$($_cc | head -n1)
4066         # 4509: "This form of conditional instruction is deprecated"
4067         _flags="-nologo -ignore 4509"
4068         _flags_filter=armasm_flags
4069     elif $_cc 2>&1 | grep -q Intel; then
4070         _type=icl
4071         _ident=$($_cc 2>&1 | head -n1)
4072         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4073         # Not only is O3 broken on 13.x+ but it is slower on all previous
4074         # versions (tested) as well.
4075         _cflags_speed="-O2"
4076         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4077         if $_cc 2>&1 | grep -q Linker; then
4078             _ld_o='-out:$@'
4079         else
4080             _ld_o='-Fe$@'
4081         fi
4082         _cc_o='-Fo$@'
4083         _cc_e='-P'
4084         _flags_filter=icl_flags
4085         _ld_lib='lib%.a'
4086         _ld_path='-libpath:'
4087         # -Qdiag-error to make icl error when seeing certain unknown arguments
4088         _flags='-nologo -Qdiag-error:4044,10157'
4089         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4090         # with MSVC which enables it by default.
4091         _cflags='-D_USE_MATH_DEFINES -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4092         disable stripping
4093     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4094         _type=msvc
4095         _ident=$($_cc 2>&1 | head -n1)
4096         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4097         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4098         _cflags_speed="-O2"
4099         _cflags_size="-O1"
4100         if $_cc -nologo- 2>&1 | grep -q Linker; then
4101             _ld_o='-out:$@'
4102         else
4103             _ld_o='-Fe$@'
4104         fi
4105         _cc_o='-Fo$@'
4106         _cc_e='-P -Fi$@'
4107         _flags_filter=msvc_flags
4108         _ld_lib='lib%.a'
4109         _ld_path='-libpath:'
4110         _flags='-nologo'
4111         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS'
4112         disable stripping
4113     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4114         _type=cparser
4115         _ident=$($_cc --version | head -n1)
4116         _depflags='-MMD'
4117         _cflags_speed='-O4'
4118         _cflags_size='-O2'
4119         _flags_filter=cparser_flags
4120     fi
4121
4122     eval ${pfx}_type=\$_type
4123     eval ${pfx}_ident=\$_ident
4124 }
4125
4126 set_ccvars(){
4127     eval ${1}_C=\${_cc_c-\${${1}_C}}
4128     eval ${1}_E=\${_cc_e-\${${1}_E}}
4129     eval ${1}_O=\${_cc_o-\${${1}_O}}
4130
4131     if [ -n "$_depflags" ]; then
4132         eval ${1}_DEPFLAGS=\$_depflags
4133     else
4134         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4135         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4136         eval DEP${1}FLAGS=\$_flags
4137     fi
4138 }
4139
4140 probe_cc cc "$cc" "true"
4141 cflags_filter=$_flags_filter
4142 cflags_speed=$_cflags_speed
4143 cflags_size=$_cflags_size
4144 cflags_noopt=$_cflags_noopt
4145 add_cflags $_flags $_cflags
4146 cc_ldflags=$_ldflags
4147 set_ccvars CC
4148
4149 probe_cc hostcc "$host_cc"
4150 host_cflags_filter=$_flags_filter
4151 add_host_cflags  $_flags $_cflags
4152 set_ccvars HOSTCC
4153
4154 test -n "$cc_type" && enable $cc_type ||
4155     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4156
4157 : ${as_default:=$cc}
4158 : ${objcc_default:=$cc}
4159 : ${dep_cc_default:=$cc}
4160 : ${ld_default:=$cc}
4161 : ${host_ld_default:=$host_cc}
4162 set_default ar as objcc dep_cc ld ln_s host_ld windres
4163
4164 probe_cc as "$as"
4165 asflags_filter=$_flags_filter
4166 add_asflags $_flags $_cflags
4167 set_ccvars AS
4168
4169 probe_cc objcc "$objcc"
4170 objcflags_filter=$_flags_filter
4171 add_objcflags $_flags $_cflags
4172 set_ccvars OBJC
4173
4174 probe_cc ld "$ld"
4175 ldflags_filter=$_flags_filter
4176 add_ldflags $_flags $_ldflags
4177 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4178 LD_O=${_ld_o-$LD_O}
4179 LD_LIB=${_ld_lib-$LD_LIB}
4180 LD_PATH=${_ld_path-$LD_PATH}
4181
4182 probe_cc hostld "$host_ld"
4183 host_ldflags_filter=$_flags_filter
4184 add_host_ldflags $_flags $_ldflags
4185 HOSTLD_O=${_ld_o-$HOSTLD_O}
4186
4187 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4188     probe_cc depcc "$dep_cc"
4189     CCDEP=${_DEPCMD:-$DEPCMD}
4190     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4191     DEPCCFLAGS=$_flags
4192 fi
4193
4194 if $ar 2>&1 | grep -q Microsoft; then
4195     arflags="-nologo"
4196     ar_o='-out:$@'
4197 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
4198     arflags="rq"
4199     ar_o='$@'
4200 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
4201     arflags='-Xany -r -c'
4202     ar_o='$@'
4203 elif $ar 2>&1 | grep -q "\[D\] "; then
4204     arflags="rcD"
4205     ar_o='$@'
4206 else
4207     arflags="rc"
4208     ar_o='$@'
4209 fi
4210
4211 add_cflags $extra_cflags
4212 add_cxxflags $extra_cxxflags
4213 add_objcflags $extra_objcflags
4214 add_asflags $extra_cflags
4215
4216 if test -n "$sysroot"; then
4217     case "$cc_type" in
4218         gcc|llvm_gcc|clang)
4219             add_cppflags --sysroot="$sysroot"
4220             add_ldflags --sysroot="$sysroot"
4221 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
4222             add_cppflags -isysroot "$sysroot"
4223             add_ldflags -isysroot "$sysroot"
4224         ;;
4225         tms470)
4226             add_cppflags -I"$sysinclude"
4227             add_ldflags  --sysroot="$sysroot"
4228         ;;
4229     esac
4230 fi
4231
4232 if test "$cpu" = host; then
4233     enabled cross_compile &&
4234         die "--cpu=host makes no sense when cross-compiling."
4235
4236     case "$cc_type" in
4237         gcc|llvm_gcc)
4238             check_native(){
4239                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4240                 sed -n "/cc1.*$1=/{
4241                             s/.*$1=\\([^ ]*\\).*/\\1/
4242                             p
4243                             q
4244                         }" $TMPE
4245             }
4246             cpu=$(check_native -march || check_native -mcpu)
4247         ;;
4248         clang)
4249             check_native(){
4250                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4251                 sed -n "/cc1.*-target-cpu /{
4252                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4253                             p
4254                             q
4255                         }" $TMPE
4256             }
4257             cpu=$(check_native -march)
4258         ;;
4259     esac
4260
4261     test "${cpu:-host}" = host &&
4262         die "--cpu=host not supported with compiler $cc"
4263 fi
4264
4265 # Deal with common $arch aliases
4266 case "$arch" in
4267     aarch64|arm64)
4268         arch="aarch64"
4269     ;;
4270     arm*|iPad*|iPhone*)
4271         arch="arm"
4272     ;;
4273     mips*|IP*)
4274         case "$arch" in
4275         *el)
4276             add_cppflags -EL
4277             add_ldflags -EL
4278         ;;
4279         *eb)
4280             add_cppflags -EB
4281             add_ldflags -EB
4282         ;;
4283         esac
4284         arch="mips"
4285     ;;
4286     parisc*|hppa*)
4287         arch="parisc"
4288     ;;
4289     "Power Macintosh"|ppc*|powerpc*)
4290         arch="ppc"
4291     ;;
4292     s390|s390x)
4293         arch="s390"
4294     ;;
4295     sh4|sh)
4296         arch="sh4"
4297     ;;
4298     sun4*|sparc*)
4299         arch="sparc"
4300     ;;
4301     tilegx|tile-gx)
4302         arch="tilegx"
4303     ;;
4304     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4305         arch="x86"
4306     ;;
4307 esac
4308
4309 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4310 enable $arch
4311
4312 # Add processor-specific flags
4313 if enabled aarch64; then
4314
4315     case $cpu in
4316         armv*)
4317             cpuflags="-march=$cpu"
4318         ;;
4319         *)
4320             cpuflags="-mcpu=$cpu"
4321         ;;
4322     esac
4323
4324 elif enabled alpha; then
4325
4326     cpuflags="-mcpu=$cpu"
4327
4328 elif enabled arm; then
4329
4330     check_arm_arch() {
4331         check_cpp_condition stddef.h \
4332             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4333             $cpuflags
4334     }
4335
4336     probe_arm_arch() {
4337         if   check_arm_arch 4;        then echo armv4
4338         elif check_arm_arch 4T;       then echo armv4t
4339         elif check_arm_arch 5;        then echo armv5
4340         elif check_arm_arch 5E;       then echo armv5e
4341         elif check_arm_arch 5T;       then echo armv5t
4342         elif check_arm_arch 5TE;      then echo armv5te
4343         elif check_arm_arch 5TEJ;     then echo armv5te
4344         elif check_arm_arch 6;        then echo armv6
4345         elif check_arm_arch 6J;       then echo armv6j
4346         elif check_arm_arch 6K;       then echo armv6k
4347         elif check_arm_arch 6Z;       then echo armv6z
4348         elif check_arm_arch 6ZK;      then echo armv6zk
4349         elif check_arm_arch 6T2;      then echo armv6t2
4350         elif check_arm_arch 7;        then echo armv7
4351         elif check_arm_arch 7A  7_A;  then echo armv7-a
4352         elif check_arm_arch 7S;       then echo armv7-a
4353         elif check_arm_arch 7R  7_R;  then echo armv7-r
4354         elif check_arm_arch 7M  7_M;  then echo armv7-m
4355         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4356         elif check_arm_arch 8A  8_A;  then echo armv8-a
4357         fi
4358     }
4359
4360     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4361
4362     case $cpu in
4363         armv*)
4364             cpuflags="-march=$cpu"
4365             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4366         ;;
4367         *)
4368             cpuflags="-mcpu=$cpu"
4369             case $cpu in
4370                 cortex-a*)                               subarch=armv7a  ;;
4371                 cortex-r*)                               subarch=armv7r  ;;
4372                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4373                 arm11*)                                  subarch=armv6   ;;
4374                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4375                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4376                 *)                             subarch=$(probe_arm_arch) ;;
4377             esac
4378         ;;
4379     esac
4380
4381     case "$subarch" in
4382         armv5t*)    enable fast_clz                ;;
4383         armv[6-8]*)
4384             enable fast_clz
4385             disabled fast_unaligned || enable fast_unaligned
4386             ;;
4387     esac
4388
4389 elif enabled avr32; then
4390
4391     case $cpu in
4392         ap7[02]0[0-2])
4393             subarch="avr32_ap"
4394             cpuflags="-mpart=$cpu"
4395         ;;
4396         ap)
4397             subarch="avr32_ap"
4398             cpuflags="-march=$cpu"
4399         ;;
4400         uc3[ab]*)
4401             subarch="avr32_uc"
4402             cpuflags="-mcpu=$cpu"
4403         ;;
4404         uc)
4405             subarch="avr32_uc"
4406             cpuflags="-march=$cpu"
4407         ;;
4408     esac
4409
4410 elif enabled bfin; then
4411
4412     cpuflags="-mcpu=$cpu"
4413
4414 elif enabled mips; then
4415
4416     cpuflags="-march=$cpu"
4417
4418     if [ "$cpu" != "generic" ]; then
4419         disable mips32r2
4420         disable mips32r5
4421         disable mips64r2
4422         disable mips32r6
4423         disable mips64r6
4424         disable loongson2
4425         disable loongson3
4426
4427         case $cpu in
4428             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4429                 enable mips32r2
4430                 disable msa
4431             ;;
4432             p5600|i6400|p6600)
4433                 disable mipsdsp
4434                 disable mipsdspr2
4435             ;;
4436             loongson*)
4437                 enable loongson2
4438                 enable loongson3
4439                 enable local_aligned_8 local_aligned_16 local_aligned_32
4440                 enable simd_align_16
4441                 enable fast_64bit
4442                 enable fast_clz
4443                 enable fast_cmov
4444                 enable fast_unaligned
4445                 disable aligned_stack
4446                 disable mipsfpu
4447                 disable mipsdsp
4448                 disable mipsdspr2
4449                 case $cpu in
4450                     loongson3*)
4451                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4452                     ;;
4453                     loongson2e)
4454                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4455                     ;;
4456                     loongson2f)
4457                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4458                     ;;
4459                 esac
4460             ;;
4461             *)
4462                 # Unknown CPU. Disable everything.
4463                 warn "unknown CPU. Disabling all MIPS optimizations."
4464                 disable mipsfpu
4465                 disable mipsdsp
4466                 disable mipsdspr2
4467                 disable msa
4468                 disable mmi
4469             ;;
4470         esac
4471
4472         case $cpu in
4473             24kc)
4474                 disable mipsfpu
4475                 disable mipsdsp
4476                 disable mipsdspr2
4477             ;;
4478             24kf*)
4479                 disable mipsdsp
4480                 disable mipsdspr2
4481             ;;
4482             24kec|34kc|1004kc)
4483                 disable mipsfpu
4484                 disable mipsdspr2
4485             ;;
4486             24kef*|34kf*|1004kf*)
4487                 disable mipsdspr2
4488             ;;
4489             74kc)
4490                 disable mipsfpu
4491             ;;
4492             p5600)
4493                 enable mips32r5
4494                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4495             ;;
4496             i6400)
4497                 enable mips64r6
4498                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4499             ;;
4500             p6600)
4501                 enable mips64r6
4502                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4503             ;;
4504         esac
4505     else
4506         # We do not disable anything. Is up to the user to disable the unwanted features.
4507         warn 'generic cpu selected'
4508     fi
4509
4510 elif enabled ppc; then
4511
4512     disable ldbrx
4513
4514     case $(tolower $cpu) in
4515         601|ppc601|powerpc601)
4516             cpuflags="-mcpu=601"
4517             disable altivec
4518         ;;
4519         603*|ppc603*|powerpc603*)
4520             cpuflags="-mcpu=603"
4521             disable altivec
4522         ;;
4523         604*|ppc604*|powerpc604*)
4524             cpuflags="-mcpu=604"
4525             disable altivec
4526         ;;
4527         g3|75*|ppc75*|powerpc75*)
4528             cpuflags="-mcpu=750"
4529             disable altivec
4530         ;;
4531         g4|745*|ppc745*|powerpc745*)
4532             cpuflags="-mcpu=7450"
4533             disable vsx
4534         ;;
4535         74*|ppc74*|powerpc74*)
4536             cpuflags="-mcpu=7400"
4537             disable vsx
4538         ;;
4539         g5|970|ppc970|powerpc970)
4540             cpuflags="-mcpu=970"
4541             disable vsx
4542         ;;
4543         power[3-6]*)
4544             cpuflags="-mcpu=$cpu"
4545             disable vsx
4546         ;;
4547         power[7-8]*)
4548             cpuflags="-mcpu=$cpu"
4549         ;;
4550         cell)
4551             cpuflags="-mcpu=cell"
4552             enable ldbrx
4553             disable vsx
4554         ;;
4555         e500mc)
4556             cpuflags="-mcpu=e500mc"
4557             disable altivec
4558         ;;
4559         e500v2)
4560             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4561             disable altivec
4562             disable dcbzl
4563         ;;
4564         e500)
4565             cpuflags="-mcpu=8540 -mhard-float"
4566             disable altivec
4567             disable dcbzl
4568         ;;
4569     esac
4570
4571 elif enabled sparc; then
4572
4573     case $cpu in
4574         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4575             cpuflags="-mcpu=$cpu"
4576         ;;
4577         ultrasparc*|niagara[234])
4578             cpuflags="-mcpu=$cpu"
4579         ;;
4580     esac
4581
4582 elif enabled x86; then
4583
4584     case $cpu in
4585         i[345]86|pentium)
4586             cpuflags="-march=$cpu"
4587             disable i686
4588             disable mmx
4589         ;;
4590         # targets that do NOT support nopl and conditional mov (cmov)
4591         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4592             cpuflags="-march=$cpu"
4593             disable i686
4594         ;;
4595         # targets that do support nopl and conditional mov (cmov)
4596         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4597         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4598         |amdfam10|barcelona|b[dt]ver*|znver*)
4599             cpuflags="-march=$cpu"
4600             enable i686
4601             enable fast_cmov
4602         ;;
4603         # targets that do support conditional mov but on which it's slow
4604         pentium4|pentium4m|prescott|nocona)
4605             cpuflags="-march=$cpu"
4606             enable i686
4607             disable fast_cmov
4608         ;;
4609     esac
4610
4611 fi
4612
4613 if [ "$cpu" != generic ]; then
4614     add_cflags  $cpuflags
4615     add_asflags $cpuflags
4616     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4617 fi
4618
4619 # compiler sanity check
4620 check_exec <<EOF
4621 int main(void){ return 0; }
4622 EOF
4623 if test "$?" != 0; then
4624     echo "$cc is unable to create an executable file."
4625     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4626         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4627         echo "Only do this if you know what cross compiling means."
4628     fi
4629     die "C compiler test failed."
4630 fi
4631
4632 add_cppflags -D_ISOC99_SOURCE
4633 add_cxxflags -D__STDC_CONSTANT_MACROS
4634 add_cxxflags -std=c++98
4635
4636 # some compilers silently accept -std=c11, so we also need to check that the
4637 # version macro is defined properly
4638 if test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L"; then
4639     add_cflags -std=c11
4640 else
4641     check_cflags -std=c99
4642 fi
4643
4644 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4645 #include <stdlib.h>
4646 EOF
4647 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4648 #include <stdlib.h>
4649 EOF
4650
4651 add_host_cppflags -D_ISOC99_SOURCE
4652 check_host_cflags -std=c99
4653 check_host_cflags -Wall
4654 check_host_cflags -O3
4655
4656 check_64bit(){
4657     arch32=$1
4658     arch64=$2
4659     expr=$3
4660     check_code cc "" "int test[2*($expr) - 1]" &&
4661         subarch=$arch64 || subarch=$arch32
4662 }
4663
4664 case "$arch" in
4665     aarch64|alpha|ia64)
4666         spic=$shared
4667     ;;
4668     mips)
4669         check_64bit mips mips64 '_MIPS_SIM > 1'
4670         spic=$shared
4671     ;;
4672     parisc)
4673         check_64bit parisc parisc64 'sizeof(void *) > 4'
4674         spic=$shared
4675     ;;
4676     ppc)
4677         check_64bit ppc ppc64 'sizeof(void *) > 4'
4678         spic=$shared
4679     ;;
4680     s390)
4681         check_64bit s390 s390x 'sizeof(void *) > 4'
4682         spic=$shared
4683     ;;
4684     sparc)
4685         check_64bit sparc sparc64 'sizeof(void *) > 4'
4686         spic=$shared
4687     ;;
4688     x86)
4689         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4690         # Treat x32 as x64 for now. Note it also needs spic=$shared
4691         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4692             subarch=x86_64
4693         if test "$subarch" = "x86_64"; then
4694             spic=$shared
4695         fi
4696     ;;
4697     ppc)
4698         check_cc <<EOF && subarch="ppc64"
4699         int test[(int)sizeof(char*) - 7];
4700 EOF
4701     ;;
4702 esac
4703
4704 enable $subarch
4705 enabled spic && enable_weak pic
4706
4707 # OS specific
4708 case $target_os in
4709     aix)
4710         SHFLAGS=-shared
4711         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4712         enabled shared && add_ldflags -Wl,-brtl
4713         ;;
4714     android)
4715         disable symver
4716         enable section_data_rel_ro
4717         SLIB_INSTALL_NAME='$(SLIBNAME)'
4718         SLIB_INSTALL_LINKS=
4719         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4720         ;;
4721     haiku)
4722         prefix_default="/boot/common"
4723         network_extralibs="-lnetwork"
4724         host_libs=
4725         ;;
4726     sunos)
4727         SHFLAGS='-shared -Wl,-h,$$(@F)'
4728         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4729         network_extralibs="-lsocket -lnsl"
4730         add_cppflags -D__EXTENSIONS__
4731         # When using suncc to build, the Solaris linker will mark
4732         # an executable with each instruction set encountered by
4733         # the Solaris assembler.  As our libraries contain their own
4734         # guards for processor-specific code, instead suppress
4735         # generation of the HWCAPS ELF section on Solaris x86 only.
4736         enabled_all suncc x86 &&
4737             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4738             add_ldflags -Wl,-M,mapfile
4739         nm_default='nm -P -g'
4740         version_script='-M'
4741         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
4742         ;;
4743     netbsd)
4744         disable symver
4745         oss_indev_extralibs="-lossaudio"
4746         oss_outdev_extralibs="-lossaudio"
4747         enabled gcc || check_ldflags -Wl,-zmuldefs
4748         ;;
4749     openbsd|bitrig)
4750         disable symver
4751         SHFLAGS='-shared'
4752         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4753         SLIB_INSTALL_LINKS=
4754         oss_indev_extralibs="-lossaudio"
4755         oss_outdev_extralibs="-lossaudio"
4756         ;;
4757     dragonfly)
4758         disable symver
4759         ;;
4760     freebsd)
4761         ;;
4762     bsd/os)
4763         add_extralibs -lpoll -lgnugetopt
4764         strip="strip -d"
4765         ;;
4766     darwin)
4767         enabled ppc && add_asflags -force_cpusubtype_ALL
4768         install_name_dir_default='$(SHLIBDIR)'
4769         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4770         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4771         strip="${strip} -x"
4772         add_ldflags -Wl,-dynamic,-search_paths_first
4773         SLIBSUF=".dylib"
4774         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4775         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4776         objformat="macho"
4777         enabled x86_64 && objformat="macho64"
4778         enabled_any pic shared x86_64 ||
4779             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4780         check_header dispatch/dispatch.h &&
4781             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
4782         version_script='-exported_symbols_list'
4783         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
4784         ;;
4785     msys*)
4786         die "Native MSYS builds are discouraged, please use the MINGW environment."
4787         ;;
4788     mingw32*|mingw64*)
4789         if test $target_os = "mingw32ce"; then
4790             disable network
4791         else
4792             target_os=mingw32
4793         fi
4794         decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
4795         decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
4796         LIBTARGET=i386
4797         if enabled x86_64; then
4798             LIBTARGET="i386:x86-64"
4799         elif enabled arm; then
4800             LIBTARGET=arm-wince
4801         fi
4802         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4803         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4804         shlibdir_default="$bindir_default"
4805         SLIBPREF=""
4806         SLIBSUF=".dll"
4807         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4808         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4809         dlltool="${cross_prefix}dlltool"
4810         if check_cmd lib.exe -list; then
4811             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4812             if enabled x86_64; then
4813                 LIBTARGET=x64
4814             fi
4815         elif check_cmd $dlltool --version; then
4816             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4817         fi
4818         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4819         SLIB_INSTALL_LINKS=
4820         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4821         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4822         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--disable-auto-image-base'
4823         objformat="win32"
4824         ranlib=:
4825         enable dos_paths
4826         check_ldflags -Wl,--nxcompat,--dynamicbase
4827         # Lets work around some stupidity in binutils.
4828         # ld will strip relocations from executables even though we need them
4829         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4830         # however ld then forgets what the entry point should be (oops) so we
4831         # have to manually (re)set it.
4832         if enabled x86_32; then
4833             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
4834         elif enabled x86_64; then
4835             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
4836             check_ldflags -Wl,--high-entropy-va # binutils 2.25
4837             # Set image base >4GB for extra entropy with HEASLR
4838             add_ldexeflags -Wl,--image-base,0x140000000
4839             append SHFLAGS -Wl,--image-base,0x180000000
4840         fi
4841         ;;
4842     win32|win64)
4843         disable symver
4844         if enabled shared; then
4845             # Link to the import library instead of the normal static library
4846             # for shared libs.
4847             LD_LIB='%.lib'
4848             # Cannot build both shared and static libs with MSVC or icl.
4849             disable static
4850         fi
4851         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4852         shlibdir_default="$bindir_default"
4853         SLIBPREF=""
4854         SLIBSUF=".dll"
4855         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4856         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4857         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4858         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4859         SLIB_INSTALL_LINKS=
4860         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4861         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4862         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4863         objformat="win32"
4864         ranlib=:
4865         enable dos_paths
4866         ;;
4867     cygwin*)
4868         target_os=cygwin
4869         shlibdir_default="$bindir_default"
4870         SLIBPREF="cyg"
4871         SLIBSUF=".dll"
4872         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4873         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4874         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4875         SLIB_INSTALL_LINKS=
4876         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4877         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4878         objformat="win32"
4879         enable dos_paths
4880         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4881         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4882         ;;
4883     *-dos|freedos|opendos)
4884         network_extralibs="-lsocket"
4885         objformat="coff"
4886         enable dos_paths
4887         add_cppflags -U__STRICT_ANSI__
4888         ;;
4889     linux)
4890         enable dv1394
4891         enable section_data_rel_ro
4892         ;;
4893     irix*)
4894         target_os=irix
4895         ranlib="echo ignoring ranlib"
4896         ;;
4897     os/2*)
4898         strip="lxlite -CS"
4899         objformat="aout"
4900         add_cppflags -D_GNU_SOURCE
4901         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4902         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4903         LIBSUF="_s.a"
4904         SLIBPREF=""
4905         SLIBSUF=".dll"
4906         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4907         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4908         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
4909             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
4910             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
4911             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
4912             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
4913         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
4914             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
4915         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4916         SLIB_INSTALL_LINKS=
4917         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
4918         enable dos_paths
4919         enable_weak os2threads
4920         ;;
4921     gnu/kfreebsd)
4922         add_cppflags -D_BSD_SOURCE
4923         ;;
4924     gnu)
4925         ;;
4926     qnx)
4927         add_cppflags -D_QNX_SOURCE
4928         network_extralibs="-lsocket"
4929         ;;
4930     symbian)
4931         SLIBSUF=".dll"
4932         enable dos_paths
4933         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4934         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4935         add_ldflags -Wl,--target1-abs,--no-undefined \
4936                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4937                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4938         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4939                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4940                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4941         ;;
4942     osf1)
4943         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4944         ;;
4945     minix)
4946         ;;
4947     plan9)
4948         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4949                      -D_REENTRANT_SOURCE        \
4950                      -D_RESEARCH_SOURCE         \
4951                      -DFD_SETSIZE=96            \
4952                      -DHAVE_SOCK_OPTS
4953         add_compat strtod.o strtod=avpriv_strtod
4954         network_extralibs='-lbsd'
4955         exeobjs=compat/plan9/main.o
4956         disable ffserver
4957         cp_f='cp'
4958         ;;
4959     none)
4960         ;;
4961     *)
4962         die "Unknown OS '$target_os'."
4963         ;;
4964 esac
4965
4966 # test if creating links works
4967 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
4968 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
4969 mkdir "$link_dest"
4970 $ln_s "$link_dest" "$link_name"
4971 touch "$link_dest/test_file"
4972 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
4973     # create link to source path
4974     [ -e src ] && rm src
4975     $ln_s "$source_path" src
4976     source_link=src
4977 else
4978     # creating directory links doesn't work
4979     # fall back to using the full source path
4980     source_link="$source_path"
4981 fi
4982 # cleanup
4983 rm -r "$link_dest"
4984 rm -r "$link_name"
4985
4986 # determine libc flavour
4987
4988 probe_libc(){
4989     pfx=$1
4990     pfx_no_=${pfx%_}
4991     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4992     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4993         eval ${pfx}libc_type=uclibc
4994         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4995     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4996         eval ${pfx}libc_type=glibc
4997         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4998     # MinGW headers can be installed on Cygwin, so check for newlib first.
4999     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5000         eval ${pfx}libc_type=newlib
5001         add_${pfx}cppflags -U__STRICT_ANSI__
5002     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5003     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5004         eval ${pfx}libc_type=mingw64
5005         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5006             add_compat msvcrt/snprintf.o
5007             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5008         fi
5009         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5010         eval test \$${pfx_no_}cc_type = "gcc" &&
5011             add_${pfx}cppflags -D__printf__=__gnu_printf__
5012     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5013          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5014         eval ${pfx}libc_type=mingw32
5015         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5016             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5017             die "ERROR: MinGW32 runtime version must be >= 3.15."
5018         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5019         check_${pfx}cpp_condition _mingw.h "defined(_WIN32_WINNT) && _WIN32_WINNT >= 0x0502" ||
5020             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
5021         eval test \$${pfx_no_}cc_type = "gcc" &&
5022             add_${pfx}cppflags -D__printf__=__gnu_printf__
5023     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5024         eval ${pfx}libc_type=msvcrt
5025         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5026             if [ "$pfx" = host_ ]; then
5027                 add_host_cppflags -Dsnprintf=_snprintf
5028             else
5029                 add_compat strtod.o strtod=avpriv_strtod
5030                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5031                                              _snprintf=avpriv_snprintf  \
5032                                              vsnprintf=avpriv_vsnprintf
5033             fi
5034         fi
5035         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5036         # 0x601 by default unless something else is set by the user.
5037         # This can easily lead to us detecting functions only present
5038         # in such new versions and producing binaries requiring windows 7.0.
5039         # Therefore explicitly set the default to XP unless the user has
5040         # set something else on the command line.
5041         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5042         # family. For these cases, configure is free to use any functions
5043         # found in the SDK headers by default. (Alternatively, we could force
5044         # _WIN32_WINNT to 0x0602 in that case.)
5045         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5046             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
5047 #ifdef WINAPI_FAMILY
5048 #include <winapifamily.h>
5049 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5050 #error not desktop
5051 #endif
5052 #endif
5053 EOF
5054     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5055         eval ${pfx}libc_type=klibc
5056     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5057         eval ${pfx}libc_type=bionic
5058     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5059         eval ${pfx}libc_type=solaris
5060         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5061     fi
5062     check_${pfx}cc <<EOF
5063 #include <time.h>
5064 void *v = localtime_r;
5065 EOF
5066 test "$?" != 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
5067 #include <time.h>
5068 void *v = localtime_r;
5069 EOF
5070
5071 }
5072
5073 probe_libc
5074 test -n "$libc_type" && enable libc_$libc_type
5075 probe_libc host_
5076 test -n "$host_libc_type" && enable host_libc_$host_libc_type
5077
5078 case $libc_type in
5079     bionic)
5080         add_compat strtod.o strtod=avpriv_strtod
5081         ;;
5082 esac
5083
5084 # hacks for compiler/libc/os combinations
5085
5086 if enabled_all tms470 libc_glibc; then
5087     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
5088     add_cppflags -D__USER_LABEL_PREFIX__=
5089     add_cppflags -D__builtin_memset=memset
5090     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
5091     add_cflags   -pds=48    # incompatible redefinition of macro
5092 fi
5093
5094 if enabled_all ccc libc_glibc; then
5095     add_ldflags -Wl,-z,now  # calls to libots crash without this
5096 fi
5097
5098 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5099     add_cppflags '-I\$(SRC_PATH)/compat/float'
5100
5101 esc(){
5102     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
5103 }
5104
5105 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
5106
5107 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5108
5109 set_default libdir
5110 : ${shlibdir_default:="$libdir"}
5111 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5112
5113 set_default $PATHS_LIST
5114 set_default nm
5115
5116 # we need to build at least one lib type
5117 if ! enabled_any static shared; then
5118     cat <<EOF
5119 At least one library type must be built.
5120 Specify --enable-static to build the static libraries or --enable-shared to
5121 build the shared libraries as well. To only build the shared libraries specify
5122 --disable-static in addition to --enable-shared.
5123 EOF
5124     exit 1
5125 fi
5126
5127 die_license_disabled() {
5128     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
5129 }
5130
5131 die_license_disabled_gpl() {
5132     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
5133 }
5134
5135 die_license_disabled gpl frei0r
5136 die_license_disabled gpl libcdio
5137 die_license_disabled gpl librubberband
5138 die_license_disabled gpl libsmbclient
5139 die_license_disabled gpl libvidstab
5140 die_license_disabled gpl libx264
5141 die_license_disabled gpl libx265
5142 die_license_disabled gpl libxavs
5143 die_license_disabled gpl libxvid
5144 die_license_disabled gpl x11grab
5145
5146 die_license_disabled nonfree libnpp
5147 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
5148 enabled gpl && die_license_disabled_gpl nonfree openssl
5149
5150 die_license_disabled version3 gmp
5151 die_license_disabled version3 libopencore_amrnb
5152 die_license_disabled version3 libopencore_amrwb
5153 die_license_disabled version3 libsmbclient
5154 die_license_disabled version3 libvo_amrwbenc
5155
5156 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
5157
5158 disabled optimizations || check_cflags -fomit-frame-pointer
5159
5160 enable_weak_pic() {
5161     disabled pic && return
5162     enable pic
5163     add_cppflags -DPIC
5164     case "$target_os" in
5165     mingw*|cygwin*)
5166         ;;
5167     *)
5168         add_cflags -fPIC
5169         ;;
5170     esac
5171     add_asflags  -fPIC
5172 }
5173
5174 enabled pic && enable_weak_pic
5175
5176 check_cc <<EOF || die "Symbol mangling check failed."
5177 int ff_extern;
5178 EOF
5179 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5180 extern_prefix=${sym%%ff_extern*}
5181
5182 check_cc <<EOF && enable_weak inline_asm
5183 void foo(void) { __asm__ volatile ("" ::); }
5184 EOF
5185
5186 _restrict=
5187 for restrict_keyword in restrict __restrict__ __restrict; do
5188     check_cc <<EOF && _restrict=$restrict_keyword && break
5189 void foo(char * $restrict_keyword p);
5190 EOF
5191 done
5192
5193 check_cc <<EOF && enable pragma_deprecated
5194 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
5195 EOF
5196
5197 check_cc <<EOF && enable attribute_packed
5198 struct { int x; } __attribute__((packed)) x;
5199 EOF
5200
5201 check_cc <<EOF && enable attribute_may_alias
5202 union { int x; } __attribute__((may_alias)) x;
5203 EOF
5204
5205 check_cc <<EOF || die "endian test failed"
5206 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5207 EOF
5208 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5209
5210 if ! enabled ppc64 || enabled bigendian; then
5211     disable vsx
5212 fi
5213
5214 check_gas() {
5215     log "check_gas using '$as' as AS"
5216     # :vararg is used on aarch64, arm and ppc altivec
5217     check_as <<EOF || return 1
5218 .macro m n, y:vararg=0
5219 \n: .int \y
5220 .endm
5221 m x
5222 EOF
5223     # .altmacro is only used in arm asm
5224     ! enabled arm || check_as <<EOF || return 1
5225 .altmacro
5226 EOF
5227     enable gnu_as
5228     return 0
5229 }
5230
5231 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5232     nogas=:
5233     enabled_any arm aarch64 && nogas=die
5234     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5235     as_noop=-v
5236
5237     case $as_type in
5238         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5239         gcc)  gaspp_as_type=gas ;;
5240         *)    gaspp_as_type=$as_type ;;
5241     esac
5242
5243     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5244
5245     test "${as#*gas-preprocessor.pl}" != "$as" ||
5246     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5247         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5248
5249     if ! check_gas ; then
5250         as=${gas:=$as}
5251         check_gas || \
5252             $nogas "GNU assembler not found, install/update gas-preprocessor"
5253     fi
5254
5255     check_as <<EOF && enable as_func
5256 .func test
5257 .endfunc
5258 EOF
5259 fi
5260
5261 check_inline_asm inline_asm_labels '"1:\n"'
5262
5263 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5264
5265 if enabled aarch64; then
5266     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5267     # internal assembler in clang 3.3 does not support this instruction
5268     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5269     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5270
5271     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5272
5273 elif enabled alpha; then
5274
5275     check_cflags -mieee
5276
5277 elif enabled arm; then
5278
5279     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
5280
5281     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
5282 float func(float a, float b){ return a+b; }
5283 EOF
5284
5285     enabled thumb && check_cflags -mthumb || check_cflags -marm
5286
5287     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
5288         enable vfp_args
5289     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5290         enable vfp_args
5291     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5292         case "${cross_prefix:-$cc}" in
5293             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
5294             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
5295 __asm__ (".eabi_attribute 28, 1");
5296 int main(void) { return 0; }
5297 EOF
5298         esac
5299         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5300     fi
5301
5302     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5303     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5304     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5305     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5306     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5307     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5308     enabled setend  && check_insn setend  'setend be'
5309
5310     [ $target_os = linux ] || [ $target_os = android ] ||
5311         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5312             $ARCH_EXT_LIST_ARM
5313
5314     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5315
5316     check_as <<EOF && enable as_dn_directive
5317 ra .dn d0.i16
5318 .unreq ra
5319 EOF
5320     check_as <<EOF && enable as_fpu_directive
5321 .fpu neon
5322 EOF
5323
5324     # llvm's integrated assembler supports .object_arch from llvm 3.5
5325     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
5326 .object_arch armv4
5327 EOF
5328
5329     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5330
5331 elif enabled mips; then
5332
5333     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5334     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5335     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5336
5337     # Enable minimum ISA based on selected options
5338     if enabled mips64; then
5339         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5340         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5341         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5342     else
5343         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5344         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5345         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5346         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5347     fi
5348
5349     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5350     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5351     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
5352     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5353     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5354
5355 elif enabled parisc; then
5356
5357     if enabled gcc; then
5358         case $($cc -dumpversion) in
5359             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5360         esac
5361     fi
5362
5363 elif enabled ppc; then
5364
5365     enable local_aligned_8 local_aligned_16 local_aligned_32
5366
5367     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5368     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5369     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5370     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5371
5372     # AltiVec flags: The FSF version of GCC differs from the Apple version
5373     if enabled altivec; then
5374         check_cflags -maltivec -mabi=altivec &&
5375         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
5376         check_cflags -faltivec
5377
5378         # check if our compiler supports Motorola AltiVec C API
5379         check_cc <<EOF || disable altivec
5380 $inc_altivec_h
5381 int main(void) {
5382     vector signed int v1 = (vector signed int) { 0 };
5383     vector signed int v2 = (vector signed int) { 1 };
5384     v1 = vec_add(v1, v2);
5385     return 0;
5386 }
5387 EOF
5388
5389         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5390     fi
5391
5392     if enabled vsx; then
5393         check_cflags -mvsx &&
5394         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
5395     fi
5396
5397     if enabled power8; then
5398         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
5399     fi
5400
5401 elif enabled x86; then
5402
5403     check_builtin rdtsc    intrin.h   "__rdtsc()"
5404     check_builtin mm_empty mmintrin.h "_mm_empty()"
5405
5406     enable local_aligned_8 local_aligned_16 local_aligned_32
5407
5408     # check whether EBP is available on x86
5409     # As 'i' is stored on the stack, this program will crash
5410     # if the base pointer is used to access it because the
5411     # base pointer is cleared in the inline assembly code.
5412     check_exec_crash <<EOF && enable ebp_available
5413 volatile int i=0;
5414 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5415 return i;
5416 EOF
5417
5418     # check whether EBX is available on x86
5419     check_inline_asm ebx_available '""::"b"(0)' &&
5420         check_inline_asm ebx_available '"":::"%ebx"'
5421
5422     # check whether xmm clobbers are supported
5423     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5424
5425     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5426         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5427
5428     # check whether binutils is new enough to compile SSSE3/MMXEXT
5429     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5430     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5431
5432     if ! disabled_any asm mmx yasm; then
5433         if check_cmd $yasmexe --version; then
5434             enabled x86_64 && yasm_extra="-m amd64"
5435             yasm_debug="-g dwarf2"
5436         elif check_cmd nasm -v; then
5437             yasmexe=nasm
5438             yasm_debug="-g -F dwarf"
5439             if enabled x86_64; then
5440                 case "$objformat" in
5441                     elf)   objformat=elf64 ;;
5442                     win32) objformat=win64 ;;
5443                 esac
5444             fi
5445         fi
5446
5447         YASMFLAGS="-f $objformat $yasm_extra"
5448         enabled pic               && append YASMFLAGS "-DPIC"
5449         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
5450         case "$objformat" in
5451             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
5452         esac
5453
5454         check_yasm "movbe ecx, [5]" && enable yasm ||
5455             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
5456         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
5457         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
5458         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
5459         check_yasm "CPU amdnop" || disable cpunop
5460     fi
5461
5462     case "$cpu" in
5463         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5464             disable fast_clz
5465         ;;
5466     esac
5467
5468 fi
5469
5470 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
5471
5472 check_ldflags -Wl,--as-needed
5473 check_ldflags -Wl,-z,noexecstack
5474
5475 if check_func dlopen && check_func dlsym; then
5476     ldl=
5477 elif check_func dlopen -ldl && check_func dlsym -ldl; then
5478     ldl=-ldl
5479 fi
5480
5481 avisynth_demuxer_extralibs='$ldl'
5482 cuda_extralibs='$ldl'
5483 decklink_outdev_extralibs="$decklink_outdev_extralibs $ldl"
5484 decklink_indev_extralibs="$decklink_indev_extralibs $ldl"
5485 frei0r_filter_extralibs='$ldl'
5486 frei0r_src_filter_extralibs='$ldl'
5487 ladspa_filter_extralibs='$ldl'
5488 nvenc_extralibs='$ldl'
5489 coreimage_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5490 coreimagesrc_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5491
5492 if ! disabled network; then
5493     check_func getaddrinfo $network_extralibs
5494     check_func inet_aton $network_extralibs
5495
5496     check_type netdb.h "struct addrinfo"
5497     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5498     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5499     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5500     check_type poll.h "struct pollfd"
5501     check_type netinet/sctp.h "struct sctp_event_subscribe"
5502     check_struct "sys/socket.h" "struct msghdr" msg_flags
5503     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5504     check_type netinet/in.h "struct sockaddr_in6"
5505     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5506     check_type "sys/types.h sys/socket.h" socklen_t
5507
5508     # Prefer arpa/inet.h over winsock2
5509     if check_header arpa/inet.h ; then
5510         check_func closesocket
5511     elif check_header winsock2.h ; then
5512         check_func_headers winsock2.h closesocket -lws2 &&
5513             network_extralibs="-lws2" ||
5514         { check_func_headers winsock2.h closesocket -lws2_32 &&
5515             network_extralibs="-lws2_32"; } || disable winsock2_h network
5516         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5517
5518         check_type ws2tcpip.h socklen_t
5519         check_type ws2tcpip.h "struct addrinfo"
5520         check_type ws2tcpip.h "struct group_source_req"
5521         check_type ws2tcpip.h "struct ip_mreq_source"
5522         check_type ws2tcpip.h "struct ipv6_mreq"
5523         check_type winsock2.h "struct pollfd"
5524         check_struct winsock2.h "struct sockaddr" sa_len
5525         check_type ws2tcpip.h "struct sockaddr_in6"
5526         check_type ws2tcpip.h "struct sockaddr_storage"
5527     else
5528         disable network
5529     fi
5530 fi
5531
5532 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5533 check_builtin atomic_compare_exchange "" "int *ptr, *oldval; int newval; __atomic_compare_exchange_n(ptr, oldval, newval, 0, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST)"
5534 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5535 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5536 check_builtin sarestart signal.h "SA_RESTART"
5537 check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" -lpthread
5538 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5539 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5540 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5541 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5542
5543 case "$custom_allocator" in
5544     jemalloc)
5545         # jemalloc by default does not use a prefix
5546         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5547     ;;
5548     tcmalloc)
5549         require_pkg_config libtcmalloc gperftools/tcmalloc.h tc_malloc
5550         malloc_prefix=tc_
5551     ;;
5552 esac
5553
5554 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5555 check_func  ${malloc_prefix}memalign            && enable memalign
5556 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5557
5558 check_func  access
5559 check_func_headers stdlib.h arc4random
5560 check_func_headers time.h clock_gettime || { check_func_headers time.h clock_gettime -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
5561 check_func  fcntl
5562 check_func  fork
5563 check_func  gethrtime
5564 check_func  getopt
5565 check_func  getrusage
5566 check_func  gettimeofday
5567 check_func  isatty
5568 check_func  mach_absolute_time
5569 check_func  mkstemp
5570 check_func  mmap
5571 check_func  mprotect
5572 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5573 check_func_headers time.h nanosleep || { check_func_headers time.h nanosleep -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
5574 check_func  sched_getaffinity
5575 check_func  setrlimit
5576 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5577 check_func  strerror_r
5578 check_func  sysconf
5579 check_func  sysctl
5580 check_func  usleep
5581
5582 check_func_headers conio.h kbhit
5583 check_func_headers io.h setmode
5584 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5585 check_func_headers stdlib.h getenv
5586 check_func_headers sys/stat.h lstat
5587
5588 check_func_headers windows.h CoTaskMemFree -lole32
5589 check_func_headers windows.h GetProcessAffinityMask
5590 check_func_headers windows.h GetProcessTimes
5591 check_func_headers windows.h GetSystemTimeAsFileTime
5592 check_func_headers windows.h LoadLibrary
5593 check_func_headers windows.h MapViewOfFile
5594 check_func_headers windows.h PeekNamedPipe
5595 check_func_headers windows.h SetConsoleTextAttribute
5596 check_func_headers windows.h SetConsoleCtrlHandler
5597 check_func_headers windows.h Sleep
5598 check_func_headers windows.h VirtualAlloc
5599 check_struct windows.h "CONDITION_VARIABLE" Ptr
5600 check_func_headers glob.h glob
5601 enabled xlib &&
5602     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5603
5604 check_header AudioToolbox/AudioToolbox.h
5605 check_header direct.h
5606 check_header dirent.h
5607 check_header dlfcn.h
5608 check_header d3d11.h
5609 check_header dxva.h
5610 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5611 check_header io.h
5612 check_header libcrystalhd/libcrystalhd_if.h
5613 check_header mach/mach_time.h
5614 check_header malloc.h
5615 check_header net/udplite.h
5616 check_header poll.h
5617 check_header sys/mman.h
5618 check_header sys/param.h
5619 check_header sys/resource.h
5620 check_header sys/select.h
5621 check_header sys/time.h
5622 check_header sys/un.h
5623 check_header termios.h
5624 check_header unistd.h
5625 check_header valgrind/valgrind.h
5626 check_header vdpau/vdpau.h
5627 check_header vdpau/vdpau_x11.h
5628 check_header VideoDecodeAcceleration/VDADecoder.h
5629 check_header VideoToolbox/VideoToolbox.h
5630 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5631 enabled videotoolbox && check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferColorPrimaries_ITU_R_2020 -framework CoreVideo
5632 check_header windows.h
5633 check_header X11/extensions/XvMClib.h
5634 check_header asm/types.h
5635
5636 # it seems there are versions of clang in some distros that try to use the
5637 # gcc headers, which explodes for stdatomic
5638 # so we also check that atomics actually work here
5639 check_builtin stdatomic_h stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0)"
5640
5641 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
5642 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
5643 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
5644 check_lib "CoreServices/CoreServices.h" UTGetOSTypeFromString "-framework CoreServices"
5645
5646 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5647
5648 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5649 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5650 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5651 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5652 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5653
5654 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
5655 check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
5656 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
5657 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
5658 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5659 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5660 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
5661 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
5662
5663 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5664
5665 check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt
5666
5667 if ! disabled w32threads && ! enabled pthreads; then
5668     check_func_headers "windows.h process.h" _beginthreadex &&
5669         enable w32threads || disable w32threads
5670     if ! enabled w32threads && enabled winrt; then
5671         check_func_headers "windows.h" CreateThread &&
5672             enable w32threads || disable w32threads
5673     fi
5674 fi
5675
5676 # check for some common methods of building with pthread support
5677 # do this before the optional library checks as some of them require pthreads
5678 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5679     enable pthreads
5680     if check_func pthread_join -pthread && check_func pthread_create -pthread; then
5681         add_cflags -pthread
5682         add_extralibs -pthread
5683     elif check_func pthread_join -pthreads && check_func pthread_create -pthreads; then
5684         add_cflags -pthreads
5685         add_extralibs -pthreads
5686     elif check_func pthread_join -ldl -pthread && check_func pthread_create -ldl -pthread; then
5687         add_cflags -ldl -pthread
5688         add_extralibs -ldl -pthread
5689     elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
5690         add_extralibs -lpthreadGC2
5691     elif check_lib pthread.h pthread_join -lpthread && check_lib pthread.h pthread_create -lpthread; then
5692         :
5693     elif ! check_func pthread_join && ! check_func pthread_create; then
5694         disable pthreads
5695     fi
5696     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5697 fi
5698
5699
5700 if enabled pthreads; then
5701   check_func pthread_cancel
5702 fi
5703
5704 enabled pthreads &&
5705     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)"
5706
5707 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
5708 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
5709 disabled  lzma || check_lib2  lzma.h lzma_version_number -llzma || disable lzma
5710
5711 check_lib math.h sin -lm && LIBM="-lm"
5712 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
5713
5714 atan2f_args=2
5715 copysign_args=2
5716 hypot_args=2
5717 ldexpf_args=2
5718 powf_args=2
5719
5720 for func in $MATH_FUNCS; do
5721     eval check_mathfunc $func \${${func}_args:-1}
5722 done
5723
5724 for func in $COMPLEX_FUNCS; do
5725     eval check_complexfunc $func \${${func}_args:-1}
5726 done
5727
5728 # these are off by default, so fail if requested and not available
5729 enabled avfoundation_indev && { check_header_objcc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
5730 enabled avfoundation_indev && { check_lib2 CoreGraphics/CoreGraphics.h CGGetActiveDisplayList -framework CoreGraphics ||
5731                                 check_lib2 ApplicationServices/ApplicationServices.h CGGetActiveDisplayList -framework ApplicationServices; }
5732 enabled cuda              && check_header cuda.h # this is not a dependency
5733 enabled cuvid             && { enabled cuda ||
5734                                die "ERROR: CUVID requires CUDA"; }
5735 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5736 enabled coreimage_filter  && { check_header_objcc QuartzCore/CoreImage.h || disable coreimage_filter; }
5737 enabled coreimagesrc_filter && { check_header_objcc QuartzCore/CoreImage.h || disable coreimagesrc_filter; }
5738 enabled decklink          && { { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; } &&
5739                                { check_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a060100" || die "ERROR: Decklink API version must be >= 10.6.1."; } }
5740 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
5741 enabled gmp               && require2 gmp gmp.h mpz_export -lgmp
5742 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
5743 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads &&
5744                                check_lib2 "dlfcn.h" dlopen -ldl; }
5745 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
5746 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5747 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
5748 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
5749 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
5750 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5751                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
5752                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5753 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
5754 enabled libfdk_aac        && { use_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5755                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5756                                  warn "using libfdk without pkg-config"; } }
5757 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"
5758 enabled libflite          && require2 libflite "flite/flite.h" flite_init $flite_libs
5759 enabled fontconfig        && enable libfontconfig
5760 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
5761 enabled libfreetype       && require_libfreetype
5762 enabled libfribidi        && require_pkg_config fribidi fribidi.h fribidi_version_info
5763 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
5764 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5765                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
5766                                done || die "ERROR: libgsm not found"; }
5767 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
5768 enabled libkvazaar        && require_pkg_config "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
5769 enabled libmfx            && require_pkg_config libmfx "mfx/mfxvideo.h" MFXInit
5770 enabled libmodplug        && require_pkg_config libmodplug libmodplug/modplug.h ModPlug_Load
5771 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5772 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
5773 enabled libnpp            && require libnpp npp.h nppGetLibVersion -lnppi -lnppc
5774 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5775 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5776 enabled libopencv         && { check_header opencv2/core/core_c.h &&
5777                                { use_pkg_config opencv opencv2/core/core_c.h cvCreateImageHeader ||
5778                                  require opencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
5779                                require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader; }
5780 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
5781 enabled libopenjpeg       && { { check_lib2 openjpeg-2.1/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5782                                check_lib2 openjpeg-2.1/openjpeg.h opj_version -lopenjp2 ||
5783                                { check_lib2 openjpeg-2.0/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5784                                { check_lib2 openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5785                                { check_lib2 openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5786                                die "ERROR: libopenjpeg not found"; }
5787 enabled libopenmpt        && require_pkg_config "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create
5788 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
5789 enabled libpulse          && require_pkg_config libpulse pulse/pulseaudio.h pa_context_new
5790 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
5791 enabled librubberband     && require_pkg_config "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new
5792 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
5793 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
5794 enabled libsmbclient      && { use_pkg_config smbclient libsmbclient.h smbc_init ||
5795                                require smbclient libsmbclient.h smbc_init -lsmbclient; }
5796 enabled libsnappy         && require snappy snappy-c.h snappy_compress -lsnappy
5797 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr && LIBSOXR="-lsoxr"
5798 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
5799 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
5800 enabled libtesseract      && require_pkg_config tesseract tesseract/capi.h TessBaseAPICreate
5801 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
5802 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
5803                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
5804                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
5805 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
5806 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
5807 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
5808 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
5809
5810 enabled libvpx            && {
5811     enabled libvpx_vp8_decoder && {
5812         use_pkg_config "vpx >= 0.9.1" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
5813             check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
5814                 die "ERROR: libvpx decoder version must be >=0.9.1";
5815     }
5816     enabled libvpx_vp8_encoder && {
5817         use_pkg_config "vpx >= 0.9.7" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
5818             check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
5819                 die "ERROR: libvpx encoder version must be >=0.9.7";
5820     }
5821     enabled libvpx_vp9_decoder && {
5822         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
5823             check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx ||
5824                 disable libvpx_vp9_decoder;
5825     }
5826     enabled libvpx_vp9_encoder && {
5827         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
5828             check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx ||
5829                 disable libvpx_vp9_encoder;
5830     }
5831     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
5832         die "libvpx enabled but no supported decoders found"
5833     fi
5834 }
5835
5836 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
5837 enabled libwebp           && {
5838     enabled libwebp_encoder      && require_pkg_config "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
5839     enabled libwebp_anim_encoder && { use_pkg_config "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit || disable libwebp_anim_encoder; } }
5840 enabled libx264           && { use_pkg_config x264 "stdint.h x264.h" x264_encoder_encode ||
5841                                { require libx264 x264.h x264_encoder_encode -lx264 &&
5842                                  warn "using libx264 without pkg-config"; } } &&
5843                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
5844                                die "ERROR: libx264 must be installed and version must be >= 0.118."; } &&
5845                              { check_cpp_condition x264.h "X264_MPEG2" &&
5846                                enable libx262; }
5847 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
5848                              { check_cpp_condition x265.h "X265_BUILD >= 68" ||
5849                                die "ERROR: libx265 version must be >= 68."; }
5850 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
5851 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
5852 enabled libzimg           && require_pkg_config "zimg >= 2.3.0" zimg.h zimg_get_api_version
5853 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
5854 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi &&
5855                              { check_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
5856                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
5857 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
5858 enabled mmal              && { check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
5859                                 { ! enabled cross_compile && {
5860                                     add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline ;
5861                                     add_extralibs -L/opt/vc/lib/ -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ;
5862                                     check_lib interface/mmal/mmal.h mmal_port_connect ; }
5863                                 check_lib interface/mmal/mmal.h mmal_port_connect ; } ||
5864                                die "ERROR: mmal not found"; }
5865 enabled mmal && check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"
5866
5867 enabled netcdf            && require_pkg_config netcdf netcdf.h nc_inq_libvers
5868 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
5869                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
5870                                die "ERROR: openal not found"; } &&
5871                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
5872                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
5873 enabled opencl            && { check_lib2 OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
5874                                check_lib2 CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
5875                                die "ERROR: opencl not found"; } &&
5876                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
5877                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
5878                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
5879 enabled opengl            && { check_lib GL/glx.h glXGetProcAddress "-lGL" ||
5880                                check_lib2 windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
5881                                check_lib2 OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
5882                                check_lib2 ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
5883                                die "ERROR: opengl not found."
5884                              }
5885 enabled omx_rpi && enable omx
5886 enabled omx               && { check_header OMX_Core.h ||
5887                                 { ! enabled cross_compile && enabled omx_rpi && {
5888                                     add_cflags -isystem/opt/vc/include/IL ; }
5889                                 check_header OMX_Core.h ; } ||
5890                                die "ERROR: OpenMAX IL headers not found"; }
5891 enabled openssl           && { use_pkg_config openssl openssl/ssl.h OPENSSL_init_ssl ||
5892                                use_pkg_config openssl openssl/ssl.h SSL_library_init ||
5893                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
5894                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
5895                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
5896                                die "ERROR: openssl not found"; }
5897 enabled qtkit_indev      && { check_header_objcc QTKit/QTKit.h || disable qtkit_indev; }
5898
5899 # libdc1394 check
5900 if enabled libdc1394; then
5901     { require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new &&
5902         enable libdc1394_2; } ||
5903     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
5904         enable libdc1394_1; } ||
5905     die "ERROR: No version of libdc1394 found "
5906 fi
5907
5908 if enabled gcrypt; then
5909     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
5910     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
5911         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
5912         gcrypt_libs=$("${GCRYPT_CONFIG}" --libs)
5913         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_libs ||
5914             die "ERROR: gcrypt not found"
5915         add_cflags $gcrypt_cflags && add_extralibs $gcrypt_libs
5916     else
5917         require2 gcrypt gcrypt.h gcry_mpi_new -lgcrypt
5918     fi
5919 fi
5920
5921 disabled sdl && disable sdl2
5922 if ! disabled sdl2; then
5923     SDL2_CONFIG="${cross_prefix}sdl2-config"
5924     if check_pkg_config sdl2 SDL_events.h SDL_PollEvent; then
5925         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
5926         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
5927         check_func SDL_Init $sdl2_libs $sdl2_cflags && enable sdl2
5928     else
5929       if "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
5930         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
5931         sdl2_libs=$("${SDL2_CONFIG}" --libs)
5932         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
5933         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
5934         check_func SDL_Init $sdl2_libs $sdl2_cflags && enable sdl2
5935       fi
5936     fi
5937     if test $target_os = "mingw32"; then
5938         sdl2_libs="$sdl2_libs -mconsole"
5939     fi
5940 fi
5941 enabled sdl2 && enable sdl && add_cflags $sdl2_cflags && add_extralibs $sdl2_libs
5942
5943 disabled securetransport || { check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5944     check_lib2 "Security/SecureTransport.h Security/Security.h" "SSLCreateContext SecItemImport" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5945     enable securetransport; }
5946
5947 disabled schannel || { check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
5948                        check_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" && enable schannel && add_extralibs -lsecur32; }
5949
5950 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
5951 enabled makeinfo \
5952     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
5953     && enable makeinfo_html || disable makeinfo_html
5954 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
5955 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
5956 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
5957 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
5958
5959 check_header linux/fb.h
5960 check_header linux/videodev.h
5961 check_header linux/videodev2.h
5962 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5963
5964 check_header sys/videoio.h
5965 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5966
5967 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
5968 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
5969 # w32api 3.12 had it defined wrong
5970 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
5971
5972 check_type "dshow.h" IBaseFilter
5973
5974 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
5975 { check_header dev/bktr/ioctl_meteor.h &&
5976   check_header dev/bktr/ioctl_bt848.h; } ||
5977 { check_header machine/ioctl_meteor.h &&
5978   check_header machine/ioctl_bt848.h; } ||
5979 { check_header dev/video/meteor/ioctl_meteor.h &&
5980   check_header dev/video/bktr/ioctl_bt848.h; } ||
5981 check_header dev/ic/bt8xx.h
5982
5983 check_header sndio.h
5984 if check_struct sys/soundcard.h audio_buf_info bytes; then
5985     enable_safe sys/soundcard.h
5986 else
5987     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
5988     #include <sys/soundcard.h>
5989     audio_buf_info abc;
5990 EOF
5991 fi
5992 check_header soundcard.h
5993
5994 enabled_any alsa_indev alsa_outdev &&
5995     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
5996
5997 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack &&
5998     check_func jack_port_get_latency_range -ljack
5999
6000 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
6001
6002 if enabled libcdio; then
6003     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6004     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6005     die "ERROR: No usable libcdio/cdparanoia found"
6006 fi
6007
6008 enabled xlib &&
6009     check_lib X11/Xlib.h XOpenDisplay -lX11 || disable xlib
6010
6011 if ! disabled libxcb; then
6012     check_pkg_config "xcb >= 1.4" xcb/xcb.h xcb_connect || {
6013         enabled libxcb && die "ERROR: libxcb >= 1.4 not found";
6014     } && disable x11grab && enable libxcb
6015
6016 if enabled libxcb; then
6017     disabled libxcb_shm || {
6018         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
6019             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
6020         } && check_header sys/shm.h && enable libxcb_shm; }
6021
6022     disabled libxcb_xfixes || {
6023         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
6024             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
6025         } && enable libxcb_xfixes; }
6026
6027     disabled libxcb_shape || {
6028         check_pkg_config xcb-shape xcb/shape.h xcb_shape_get_rectangles || {
6029             enabled libxcb_shape && die "ERROR: libxcb_shape not found";
6030         } && enable libxcb_shape; }
6031
6032     add_cflags $xcb_cflags $xcb_shm_cflags $xcb_xfixes_cflags $xcb_shape_cflags
6033     add_extralibs $xcb_libs $xcb_shm_libs $xcb_xfixes_libs $xcb_shape_libs
6034 fi
6035 fi
6036
6037 if enabled x11grab; then
6038     enabled xlib || die "ERROR: Xlib not found"
6039     require Xext X11/extensions/XShm.h XShmCreateImage -lXext
6040     require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
6041 fi
6042
6043 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6044
6045 enabled dxva2api_h &&
6046     check_cc <<EOF && enable dxva2api_cobj
6047 #define _WIN32_WINNT 0x0600
6048 #define COBJMACROS
6049 #include <windows.h>
6050 #include <d3d9.h>
6051 #include <dxva2api.h>
6052 int main(void) { IDirectXVideoDecoder *o = NULL; IDirectXVideoDecoder_Release(o); return 0; }
6053 EOF
6054
6055 enabled vaapi &&
6056     check_lib va/va.h vaInitialize -lva ||
6057     disable vaapi
6058
6059 enabled vaapi &&
6060     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
6061     disable vaapi
6062
6063 if enabled vaapi ; then
6064     enabled xlib &&
6065     check_lib2 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 &&
6066     enable vaapi_x11
6067
6068     check_lib2 "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm &&
6069     enable vaapi_drm
6070 fi
6071
6072 enabled vdpau &&
6073     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
6074     disable vdpau
6075
6076 enabled vdpau && enabled xlib &&
6077     check_lib2 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
6078     enable vdpau_x11
6079
6080 if enabled x86; then
6081     case $target_os in
6082         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6083             ;;
6084         *)
6085             disable cuda cuvid nvenc
6086             ;;
6087     esac
6088 else
6089     disable cuda cuvid nvenc
6090 fi
6091
6092 enabled nvenc &&
6093     check_cc -I$source_path <<EOF || disable nvenc
6094 #include "compat/nvenc/nvEncodeAPI.h"
6095 NV_ENCODE_API_FUNCTION_LIST flist;
6096 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6097 int main(void) { return 0; }
6098 EOF
6099
6100 # Funny iconv installations are not unusual, so check it after all flags have been set
6101 disabled iconv || check_func_headers iconv.h iconv || check_lib2 iconv.h iconv -liconv || disable iconv
6102
6103 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6104
6105 # add some useful compiler flags if supported
6106 check_cflags -Wdeclaration-after-statement
6107 check_cflags -Wall
6108 check_cflags -Wdisabled-optimization
6109 check_cflags -Wpointer-arith
6110 check_cflags -Wredundant-decls
6111 check_cflags -Wwrite-strings
6112 check_cflags -Wtype-limits
6113 check_cflags -Wundef
6114 check_cflags -Wmissing-prototypes
6115 check_cflags -Wno-pointer-to-int-cast
6116 check_cflags -Wstrict-prototypes
6117 check_cflags -Wempty-body
6118 enabled extra_warnings && check_cflags -Winline
6119 enabled extra_warnings && check_cflags -Wcast-qual
6120
6121 check_disable_warning(){
6122     warning_flag=-W${1#-Wno-}
6123     test_cflags $warning_flag && add_cflags $1
6124 }
6125
6126 check_disable_warning -Wno-parentheses
6127 check_disable_warning -Wno-switch
6128 check_disable_warning -Wno-format-zero-length
6129 check_disable_warning -Wno-pointer-sign
6130 check_disable_warning -Wno-unused-const-variable
6131
6132 # add some linker flags
6133 check_ldflags -Wl,--warn-common
6134 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6135 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
6136 enabled rpath && add_ldlibflags -Wl,-rpath,$libdir
6137 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6138
6139 # add some strip flags
6140 # -wN '..@*' is more selective than -x, but not available everywhere.
6141 check_stripflags -wN \'..@*\' || check_stripflags -x
6142
6143 enabled neon_clobber_test &&
6144     check_ldflags -Wl,--wrap,avcodec_open2              \
6145                   -Wl,--wrap,avcodec_decode_audio4      \
6146                   -Wl,--wrap,avcodec_decode_video2      \
6147                   -Wl,--wrap,avcodec_decode_subtitle2   \
6148                   -Wl,--wrap,avcodec_encode_audio2      \
6149                   -Wl,--wrap,avcodec_encode_video2      \
6150                   -Wl,--wrap,avcodec_send_packet        \
6151                   -Wl,--wrap,avcodec_receive_frame      \
6152                   -Wl,--wrap,avcodec_send_frame         \
6153                   -Wl,--wrap,avcodec_receive_packet     \
6154                   -Wl,--wrap,avcodec_encode_subtitle    \
6155                   -Wl,--wrap,swr_convert                \
6156                   -Wl,--wrap,avresample_convert ||
6157     disable neon_clobber_test
6158
6159 enabled xmm_clobber_test &&
6160     check_ldflags -Wl,--wrap,avcodec_open2              \
6161                   -Wl,--wrap,avcodec_decode_audio4      \
6162                   -Wl,--wrap,avcodec_decode_video2      \
6163                   -Wl,--wrap,avcodec_decode_subtitle2   \
6164                   -Wl,--wrap,avcodec_encode_audio2      \
6165                   -Wl,--wrap,avcodec_encode_video2      \
6166                   -Wl,--wrap,avcodec_encode_subtitle    \
6167                   -Wl,--wrap,avcodec_send_packet        \
6168                   -Wl,--wrap,avcodec_receive_frame      \
6169                   -Wl,--wrap,avcodec_send_frame         \
6170                   -Wl,--wrap,avcodec_receive_packet     \
6171                   -Wl,--wrap,swr_convert                \
6172                   -Wl,--wrap,avresample_convert         \
6173                   -Wl,--wrap,sws_scale ||
6174     disable xmm_clobber_test
6175
6176 check_ld "cc" <<EOF && enable proper_dce
6177 extern const int array[512];
6178 static inline int func(void) { return array[0]; }
6179 int main(void) { return 0; }
6180 EOF
6181
6182 if enabled proper_dce; then
6183     echo "X { local: *; };" > $TMPV
6184     if test_ldflags -Wl,${version_script},$TMPV; then
6185         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6186         check_cc <<EOF && enable symver_asm_label
6187 void ff_foo(void) __asm__ ("av_foo@VERSION");
6188 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6189 EOF
6190         check_cc <<EOF && enable symver_gnu_asm
6191 __asm__(".symver ff_foo,av_foo@VERSION");
6192 void ff_foo(void) {}
6193 EOF
6194     fi
6195 fi
6196
6197 if [ -z "$optflags" ]; then
6198     if enabled small; then
6199         optflags=$cflags_size
6200     elif enabled optimizations; then
6201         optflags=$cflags_speed
6202     else
6203         optflags=$cflags_noopt
6204     fi
6205 fi
6206
6207 check_optflags(){
6208     check_cflags "$@"
6209     enabled lto && check_ldflags "$@"
6210 }
6211
6212
6213 if enabled lto; then
6214     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6215     check_cflags  -flto
6216     check_ldflags -flto $cpuflags
6217     disable inline_asm_direct_symbol_refs
6218 fi
6219
6220 check_optflags $optflags
6221 check_optflags -fno-math-errno
6222 check_optflags -fno-signed-zeros
6223
6224 enabled ftrapv && check_cflags -ftrapv
6225
6226 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6227 int x;
6228 EOF
6229
6230
6231 if enabled icc; then
6232     # Just warnings, no remarks
6233     check_cflags -w1
6234     # -wd: Disable following warnings
6235     # 144, 167, 556: -Wno-pointer-sign
6236     # 188: enumerated type mixed with another type
6237     # 1292: attribute "foo" ignored
6238     # 1419: external declaration in primary source file
6239     # 10006: ignoring unknown option -fno-signed-zeros
6240     # 10148: ignoring unknown option -Wno-parentheses
6241     # 10156: ignoring option '-W'; no argument required
6242     # 13200: No EMMS instruction before call to function
6243     # 13203: No EMMS instruction before return from function
6244     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6245     # 11030: Warning unknown option --as-needed
6246     # 10156: ignoring option '-export'; no argument required
6247     check_ldflags -wd10156,11030
6248     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6249     enable ebp_available
6250     # The test above does not test linking
6251     enabled lto && disable symver_asm_label
6252     if enabled x86_32; then
6253         icc_version=$($cc -dumpversion)
6254         test ${icc_version%%.*} -ge 11 &&
6255             check_cflags -falign-stack=maintain-16-byte ||
6256             disable aligned_stack
6257     fi
6258 elif enabled ccc; then
6259     # disable some annoying warnings
6260     add_cflags -msg_disable bitnotint
6261     add_cflags -msg_disable mixfuncvoid
6262     add_cflags -msg_disable nonstandcast
6263     add_cflags -msg_disable unsupieee
6264 elif enabled gcc; then
6265     check_optflags -fno-tree-vectorize
6266     check_cflags -Werror=format-security
6267     check_cflags -Werror=implicit-function-declaration
6268     check_cflags -Werror=missing-prototypes
6269     check_cflags -Werror=return-type
6270     check_cflags -Werror=vla
6271     check_cflags -Wformat
6272     check_cflags -fdiagnostics-color=auto
6273     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6274 elif enabled llvm_gcc; then
6275     check_cflags -mllvm -stack-alignment=16
6276 elif enabled clang; then
6277     check_cflags -mllvm -stack-alignment=16
6278     check_cflags -mstack-alignment=16
6279     check_cflags -Qunused-arguments
6280     check_cflags -Werror=implicit-function-declaration
6281     check_cflags -Werror=missing-prototypes
6282     check_cflags -Werror=return-type
6283 elif enabled cparser; then
6284     add_cflags -Wno-missing-variable-declarations
6285     add_cflags -Wno-empty-statement
6286 elif enabled armcc; then
6287     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6288     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6289     # 2523: use of inline assembly is deprecated
6290     add_cflags -W${armcc_opt},--diag_suppress=2523
6291     add_cflags -W${armcc_opt},--diag_suppress=1207
6292     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6293     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6294     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6295     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6296 elif enabled tms470; then
6297     add_cflags -pds=824 -pds=837
6298     disable inline_asm
6299 elif enabled pathscale; then
6300     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6301 elif enabled_any msvc icl; then
6302     enabled x86_32 && disable aligned_stack
6303     enabled_all x86_32 debug && add_cflags -Oy-
6304     enabled debug && add_ldflags -debug
6305     enable pragma_deprecated
6306     if enabled icl; then
6307         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6308         # (correctly) on icl 13.x.
6309         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6310             add_cflags -Qansi-alias
6311         # Some inline asm is not compilable in debug
6312         if enabled debug; then
6313             disable ebp_available
6314             disable ebx_available
6315         fi
6316     fi
6317     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6318     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
6319     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6320     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6321     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6322     # MSVC 2013 and newer can handle it fine.
6323     # If this declspec fails, force including stdlib.h before the restrict redefinition
6324     # happens in config.h.
6325     if [ $_restrict != restrict ]; then
6326         check_cc <<EOF || add_cflags -FIstdlib.h
6327 __declspec($_restrict) void* foo(int);
6328 EOF
6329     fi
6330     check_func strtoll || add_cflags -Dstrtoll=_strtoi64
6331     check_func strtoull || add_cflags -Dstrtoull=_strtoui64
6332     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6333     # Issue has been fixed in MSVC v19.00.24218.
6334     check_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6335         check_cflags -d2SSAOptimizer-
6336     # enable utf-8 source processing on VS2015 U2 and newer
6337     check_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6338         add_cflags -utf-8
6339 fi
6340
6341 for pfx in "" host_; do
6342     varname=${pfx%_}cc_type
6343     eval "type=\$$varname"
6344     if [ $type = "msvc" ]; then
6345         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6346 static inline int foo(int a) { return a; }
6347 EOF
6348     fi
6349 done
6350
6351 case $as_type in
6352     clang)
6353         add_asflags -Qunused-arguments
6354     ;;
6355 esac
6356
6357 case $ld_type in
6358     clang)
6359         check_ldflags -Qunused-arguments
6360     ;;
6361 esac
6362
6363 case $target_os in
6364     osf1)
6365         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
6366     ;;
6367     plan9)
6368         add_cppflags -Dmain=plan9_main
6369     ;;
6370 esac
6371
6372 enable frame_thread_encoder
6373
6374 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6375
6376 check_deps $CONFIG_LIST       \
6377            $CONFIG_EXTRA      \
6378            $HAVE_LIST         \
6379            $ALL_COMPONENTS    \
6380
6381 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"
6382
6383
6384 if test $target_os = "haiku"; then
6385     disable memalign
6386     disable posix_memalign
6387 fi
6388
6389 enabled_all dxva2 dxva2api_cobj CoTaskMemFree &&
6390     prepend ffmpeg_libs $($ldflags_filter "-lole32") &&
6391     enable dxva2_lib
6392
6393 ! enabled_any memalign posix_memalign aligned_malloc &&
6394     enabled simd_align_16 && enable memalign_hack
6395
6396 # add_dep lib dep
6397 # -> enable ${lib}_deps_${dep}
6398 # -> add $dep to ${lib}_deps only once
6399 add_dep() {
6400     lib=$1
6401     dep=$2
6402     enabled "${lib}_deps_${dep}" && return 0
6403     enable  "${lib}_deps_${dep}"
6404     prepend "${lib}_deps" $dep
6405 }
6406
6407 # merge deps lib components
6408 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
6409 merge_deps() {
6410     lib=$1
6411     shift
6412     for comp in $*; do
6413         enabled $comp || continue
6414         eval "dep=\"\$${comp}_deps\""
6415         for d in $dep; do
6416             add_dep $lib $d
6417         done
6418     done
6419 }
6420
6421 merge_deps libavfilter $FILTER_LIST
6422
6423 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6424
6425 for thread in $THREADS_LIST; do
6426     if enabled $thread; then
6427         test -n "$thread_type" &&
6428             die "ERROR: Only one thread type must be selected." ||
6429             thread_type="$thread"
6430     fi
6431 done
6432
6433 if disabled stdatomic_h; then
6434     if enabled atomics_gcc; then
6435         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6436     elif enabled atomics_win32; then
6437         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6438     elif enabled atomics_suncc; then
6439         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6440     elif enabled pthreads; then
6441         add_compat atomics/pthread/stdatomic.o
6442         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6443     else
6444         enabled threads && die "Threading is enabled, but no atomics are available"
6445         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6446     fi
6447 fi
6448
6449 # Check if requested libraries were found.
6450 for lib in $AUTODETECT_LIBS; do
6451     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6452 done
6453
6454 enabled zlib && add_cppflags -DZLIB_CONST
6455
6456 # conditional library dependencies, in linking order
6457 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6458 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6459 enabled aresample_filter    && prepend avfilter_deps "swresample"
6460 enabled asyncts_filter      && prepend avfilter_deps "avresample"
6461 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6462 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6463 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6464 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6465 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6466 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6467 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6468 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6469 enabled pan_filter          && prepend avfilter_deps "swresample"
6470 enabled pp_filter           && prepend avfilter_deps "postproc"
6471 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6472 enabled resample_filter && prepend avfilter_deps "avresample"
6473 enabled sab_filter          && prepend avfilter_deps "swscale"
6474 enabled scale_filter    && prepend avfilter_deps "swscale"
6475 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6476 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6477 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6478 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6479 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6480 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6481 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6482 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6483 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6484
6485 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6486
6487 enabled opus_decoder    && prepend avcodec_deps "swresample"
6488
6489 expand_deps(){
6490     lib_deps=${1}_deps
6491     eval "deps=\$$lib_deps"
6492     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6493     unique $lib_deps
6494 }
6495
6496 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6497 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6498
6499 map 'expand_deps $v' $LIBRARY_LIST
6500
6501 echo "install prefix            $prefix"
6502 echo "source path               $source_path"
6503 echo "C compiler                $cc"
6504 echo "C library                 $libc_type"
6505 if test "$host_cc" != "$cc"; then
6506     echo "host C compiler           $host_cc"
6507     echo "host C library            $host_libc_type"
6508 fi
6509 echo "ARCH                      $arch ($cpu)"
6510 if test "$build_suffix" != ""; then
6511     echo "build suffix              $build_suffix"
6512 fi
6513 if test "$progs_suffix" != ""; then
6514     echo "progs suffix              $progs_suffix"
6515 fi
6516 if test "$extra_version" != ""; then
6517     echo "version string suffix     $extra_version"
6518 fi
6519 echo "big-endian                ${bigendian-no}"
6520 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6521 if enabled x86; then
6522     echo "${yasmexe}                      ${yasm-no}"
6523     echo "MMX enabled               ${mmx-no}"
6524     echo "MMXEXT enabled            ${mmxext-no}"
6525     echo "3DNow! enabled            ${amd3dnow-no}"
6526     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6527     echo "SSE enabled               ${sse-no}"
6528     echo "SSSE3 enabled             ${ssse3-no}"
6529     echo "AESNI enabled             ${aesni-no}"
6530     echo "AVX enabled               ${avx-no}"
6531     echo "XOP enabled               ${xop-no}"
6532     echo "FMA3 enabled              ${fma3-no}"
6533     echo "FMA4 enabled              ${fma4-no}"
6534     echo "i686 features enabled     ${i686-no}"
6535     echo "CMOV is fast              ${fast_cmov-no}"
6536     echo "EBX available             ${ebx_available-no}"
6537     echo "EBP available             ${ebp_available-no}"
6538 fi
6539 if enabled aarch64; then
6540     echo "NEON enabled              ${neon-no}"
6541     echo "VFP enabled               ${vfp-no}"
6542 fi
6543 if enabled arm; then
6544     echo "ARMv5TE enabled           ${armv5te-no}"
6545     echo "ARMv6 enabled             ${armv6-no}"
6546     echo "ARMv6T2 enabled           ${armv6t2-no}"
6547     echo "VFP enabled               ${vfp-no}"
6548     echo "NEON enabled              ${neon-no}"
6549     echo "THUMB enabled             ${thumb-no}"
6550 fi
6551 if enabled mips; then
6552     echo "MIPS FPU enabled          ${mipsfpu-no}"
6553     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6554     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6555     echo "MIPS MSA enabled          ${msa-no}"
6556     echo "LOONGSON MMI enabled      ${mmi-no}"
6557 fi
6558 if enabled ppc; then
6559     echo "AltiVec enabled           ${altivec-no}"
6560     echo "VSX enabled               ${vsx-no}"
6561     echo "POWER8 enabled            ${power8-no}"
6562     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6563     echo "dcbzl available           ${dcbzl-no}"
6564 fi
6565 echo "debug symbols             ${debug-no}"
6566 echo "strip symbols             ${stripping-no}"
6567 echo "optimize for size         ${small-no}"
6568 echo "optimizations             ${optimizations-no}"
6569 echo "static                    ${static-no}"
6570 echo "shared                    ${shared-no}"
6571 echo "postprocessing support    ${postproc-no}"
6572 echo "new filter support        ${avfilter-no}"
6573 echo "network support           ${network-no}"
6574 echo "threading support         ${thread_type-no}"
6575 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6576 echo "SDL2 support              ${sdl2-no}"
6577 echo "opencl enabled            ${opencl-no}"
6578 echo "JNI support               ${jni-no}"
6579 echo "texi2html enabled         ${texi2html-no}"
6580 echo "perl enabled              ${perl-no}"
6581 echo "pod2man enabled           ${pod2man-no}"
6582 echo "makeinfo enabled          ${makeinfo-no}"
6583 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6584 test -n "$random_seed" &&
6585     echo "random seed               ${random_seed}"
6586 echo
6587
6588 echo "Enabled programs:"
6589 print_enabled '' $PROGRAM_LIST | print_in_columns
6590 echo
6591
6592 echo "External libraries:"
6593 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_in_columns
6594 echo
6595
6596 echo "External libraries providing hardware acceleration:"
6597 print_enabled '' $HWACCEL_LIBRARY_LIST | print_in_columns
6598 echo
6599
6600 echo "Libraries:"
6601 print_enabled '' $LIBRARY_LIST | print_in_columns
6602 echo
6603
6604 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6605     echo "Enabled ${type}s:"
6606     eval list=\$$(toupper $type)_LIST
6607     print_enabled '_*' $list | print_in_columns
6608     echo
6609 done
6610
6611 license="LGPL version 2.1 or later"
6612 if enabled nonfree; then
6613     license="nonfree and unredistributable"
6614 elif enabled gplv3; then
6615     license="GPL version 3 or later"
6616 elif enabled lgplv3; then
6617     license="LGPL version 3 or later"
6618 elif enabled gpl; then
6619     license="GPL version 2 or later"
6620 fi
6621
6622 echo "License: $license"
6623
6624 echo "Creating config.mak, config.h, and doc/config.texi..."
6625
6626 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6627
6628 enabled stripping || strip="echo skipping strip"
6629
6630 config_files="$TMPH config.mak doc/config.texi"
6631
6632 cat > config.mak <<EOF
6633 # Automatically generated by configure - do not modify!
6634 ifndef FFMPEG_CONFIG_MAK
6635 FFMPEG_CONFIG_MAK=1
6636 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6637 prefix=$prefix
6638 LIBDIR=\$(DESTDIR)$libdir
6639 SHLIBDIR=\$(DESTDIR)$shlibdir
6640 INCDIR=\$(DESTDIR)$incdir
6641 BINDIR=\$(DESTDIR)$bindir
6642 DATADIR=\$(DESTDIR)$datadir
6643 DOCDIR=\$(DESTDIR)$docdir
6644 MANDIR=\$(DESTDIR)$mandir
6645 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6646 INSTALL_NAME_DIR=$install_name_dir
6647 SRC_PATH=$source_path
6648 SRC_LINK=$source_link
6649 ifndef MAIN_MAKEFILE
6650 SRC_PATH:=\$(SRC_PATH:.%=..%)
6651 endif
6652 CC_IDENT=$cc_ident
6653 ARCH=$arch
6654 INTRINSICS=$intrinsics
6655 CC=$cc
6656 CXX=$cxx
6657 AS=$as
6658 OBJCC=$objcc
6659 LD=$ld
6660 DEPCC=$dep_cc
6661 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6662 DEPAS=$as
6663 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6664 YASM=$yasmexe
6665 DEPYASM=$yasmexe
6666 AR=$ar
6667 ARFLAGS=$arflags
6668 AR_O=$ar_o
6669 RANLIB=$ranlib
6670 STRIP=$strip
6671 CP=cp -p
6672 LN_S=$ln_s
6673 CPPFLAGS=$CPPFLAGS
6674 CFLAGS=$CFLAGS
6675 CXXFLAGS=$CXXFLAGS
6676 OBJCFLAGS=$OBJCFLAGS
6677 ASFLAGS=$ASFLAGS
6678 AS_C=$AS_C
6679 AS_O=$AS_O
6680 OBJCC_C=$OBJCC_C
6681 OBJCC_E=$OBJCC_E
6682 OBJCC_O=$OBJCC_O
6683 CC_C=$CC_C
6684 CC_E=$CC_E
6685 CC_O=$CC_O
6686 CXX_C=$CXX_C
6687 CXX_O=$CXX_O
6688 LD_O=$LD_O
6689 LD_LIB=$LD_LIB
6690 LD_PATH=$LD_PATH
6691 DLLTOOL=$dlltool
6692 WINDRES=$windres
6693 DEPWINDRES=$dep_cc
6694 DOXYGEN=$doxygen
6695 LDFLAGS=$LDFLAGS
6696 LDEXEFLAGS=$LDEXEFLAGS
6697 LDLIBFLAGS=$LDLIBFLAGS
6698 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
6699 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
6700 YASMFLAGS=$YASMFLAGS
6701 BUILDSUF=$build_suffix
6702 PROGSSUF=$progs_suffix
6703 FULLNAME=$FULLNAME
6704 LIBPREF=$LIBPREF
6705 LIBSUF=$LIBSUF
6706 LIBNAME=$LIBNAME
6707 SLIBPREF=$SLIBPREF
6708 SLIBSUF=$SLIBSUF
6709 EXESUF=$EXESUF
6710 EXTRA_VERSION=$extra_version
6711 CCDEP=$CCDEP
6712 CXXDEP=$CXXDEP
6713 CCDEP_FLAGS=$CCDEP_FLAGS
6714 ASDEP=$ASDEP
6715 ASDEP_FLAGS=$ASDEP_FLAGS
6716 CC_DEPFLAGS=$CC_DEPFLAGS
6717 AS_DEPFLAGS=$AS_DEPFLAGS
6718 HOSTCC=$host_cc
6719 HOSTLD=$host_ld
6720 HOSTCFLAGS=$host_cflags
6721 HOSTCPPFLAGS=$host_cppflags
6722 HOSTEXESUF=$HOSTEXESUF
6723 HOSTLDFLAGS=$host_ldflags
6724 HOSTLIBS=$host_libs
6725 DEPHOSTCC=$host_cc
6726 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
6727 HOSTCCDEP=$HOSTCCDEP
6728 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
6729 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
6730 HOSTCC_C=$HOSTCC_C
6731 HOSTCC_O=$HOSTCC_O
6732 HOSTLD_O=$HOSTLD_O
6733 TARGET_EXEC=$target_exec $target_exec_args
6734 TARGET_PATH=$target_path
6735 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
6736 CFLAGS-ffplay=${sdl2_cflags}
6737 ZLIB=$($ldflags_filter -lz)
6738 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
6739 EXTRALIBS=$extralibs
6740 COMPAT_OBJS=$compat_objs
6741 EXEOBJS=$exeobjs
6742 INSTALL=$install
6743 LIBTARGET=${LIBTARGET}
6744 SLIBNAME=${SLIBNAME}
6745 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
6746 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
6747 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
6748 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
6749 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
6750 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
6751 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
6752 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
6753 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
6754 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
6755 NOREDZONE_FLAGS=$noredzone_flags
6756 EOF
6757
6758 get_version(){
6759     lcname=lib${1}
6760     name=$(toupper $lcname)
6761     file=$source_path/$lcname/version.h
6762     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
6763     enabled raise_major && eval ${name}_VERSION_MAJOR=$((${name}_VERSION_MAJOR+100))
6764     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
6765     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
6766     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
6767     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
6768 }
6769
6770 map 'get_version $v' $LIBRARY_LIST
6771
6772 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> config.mak' $LIBRARY_LIST
6773
6774 print_program_libs(){
6775     eval "program_libs=\$${1}_libs"
6776     eval echo "LIBS-${1}=${program_libs}" >> config.mak
6777 }
6778
6779 map 'print_program_libs $v' $PROGRAM_LIST
6780
6781 cat > $TMPH <<EOF
6782 /* Automatically generated by configure - do not modify! */
6783 #ifndef FFMPEG_CONFIG_H
6784 #define FFMPEG_CONFIG_H
6785 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
6786 #define FFMPEG_LICENSE "$(c_escape $license)"
6787 #define CONFIG_THIS_YEAR 2017
6788 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
6789 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
6790 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
6791 #define av_restrict $_restrict
6792 #define EXTERN_PREFIX "${extern_prefix}"
6793 #define EXTERN_ASM ${extern_prefix}
6794 #define BUILDSUF "$build_suffix"
6795 #define SLIBSUF "$SLIBSUF"
6796 #define HAVE_MMX2 HAVE_MMXEXT
6797 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
6798 EOF
6799
6800 test -n "$assert_level" &&
6801     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
6802
6803 test -n "$malloc_prefix" &&
6804     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
6805
6806 if enabled yasm; then
6807     append config_files $TMPASM
6808     printf '' >$TMPASM
6809 fi
6810
6811 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
6812
6813
6814 mkdir -p doc
6815 mkdir -p tests
6816 mkdir -p tests/api
6817 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
6818
6819 print_config ARCH_   "$config_files" $ARCH_LIST
6820 print_config HAVE_   "$config_files" $HAVE_LIST
6821 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
6822                                      $CONFIG_EXTRA      \
6823                                      $ALL_COMPONENTS    \
6824
6825 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
6826 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
6827
6828 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
6829 cp_if_changed $TMPH config.h
6830 touch .config
6831
6832 enabled yasm && cp_if_changed $TMPASM config.asm
6833
6834 cat > $TMPH <<EOF
6835 /* Generated by ffconf */
6836 #ifndef AVUTIL_AVCONFIG_H
6837 #define AVUTIL_AVCONFIG_H
6838 EOF
6839
6840 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
6841
6842 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
6843
6844 cp_if_changed $TMPH libavutil/avconfig.h
6845
6846 if test -n "$WARNINGS"; then
6847     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
6848     enabled fatal_warnings && exit 1
6849 fi
6850
6851 # generate the lists of enabled components
6852 print_enabled_components(){
6853     file=$1
6854     struct_name=$2
6855     name=$3
6856     shift 3
6857     echo "static const $struct_name *$name[] = {" > $TMPH
6858     for c in $*; do
6859         enabled $c && printf "    &ff_%s,\n" $c >> $TMPH
6860     done
6861     echo "    NULL };" >> $TMPH
6862     cp_if_changed $TMPH $file
6863 }
6864
6865 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
6866 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
6867
6868 # build pkg-config files
6869
6870 lib_version(){
6871     eval printf "\"lib${1}${build_suffix} >= \$LIB$(toupper ${1})_VERSION, \""
6872 }
6873
6874 pkgconfig_generate(){
6875     name=$1
6876     shortname=${name#lib}${build_suffix}
6877     comment=$2
6878     version=$3
6879     libs=$4
6880     requires=$(map 'lib_version $v' $(eval echo \$${name#lib}_deps))
6881     requires=${requires%, }
6882     enabled ${name#lib} || return 0
6883     mkdir -p $name
6884     cat <<EOF > $name/$name${build_suffix}.pc
6885 prefix=$prefix
6886 exec_prefix=\${prefix}
6887 libdir=$libdir
6888 includedir=$incdir
6889
6890 Name: $name
6891 Description: $comment
6892 Version: $version
6893 Requires: $(enabled shared || echo $requires)
6894 Requires.private: $(enabled shared && echo $requires)
6895 Conflicts:
6896 Libs: -L\${libdir} $(enabled rpath && echo "-Wl,-rpath,\${libdir}") -l${shortname} $(enabled shared || echo $libs)
6897 Libs.private: $(enabled shared && echo $libs)
6898 Cflags: -I\${includedir}
6899 EOF
6900
6901 mkdir -p doc/examples/pc-uninstalled
6902 includedir=${source_path}
6903 [ "$includedir" = . ] && includedir="\${pcfiledir}/../../.."
6904     cat <<EOF > doc/examples/pc-uninstalled/${name}-uninstalled.pc
6905 prefix=
6906 exec_prefix=
6907 libdir=\${pcfiledir}/../../../$name
6908 includedir=${includedir}
6909
6910 Name: $name
6911 Description: $comment
6912 Version: $version
6913 Requires: $requires
6914 Conflicts:
6915 Libs: -L\${libdir} -Wl,-rpath,\${libdir} -l${shortname} $(enabled shared || echo $libs)
6916 Cflags: -I\${includedir}
6917 EOF
6918 }
6919
6920 pkgconfig_generate libavutil     "FFmpeg utility library"               "$LIBAVUTIL_VERSION"     "$LIBRT $LIBM"
6921 pkgconfig_generate libavcodec    "FFmpeg codec library"                 "$LIBAVCODEC_VERSION"    "$extralibs"
6922 pkgconfig_generate libavformat   "FFmpeg container format library"      "$LIBAVFORMAT_VERSION"   "$extralibs"
6923 pkgconfig_generate libavdevice   "FFmpeg device handling library"       "$LIBAVDEVICE_VERSION"   "$extralibs"
6924 pkgconfig_generate libavfilter   "FFmpeg audio/video filtering library" "$LIBAVFILTER_VERSION"   "$extralibs"
6925 pkgconfig_generate libpostproc   "FFmpeg postprocessing library"        "$LIBPOSTPROC_VERSION"   ""
6926 pkgconfig_generate libavresample "Libav audio resampling library"       "$LIBAVRESAMPLE_VERSION" "$LIBM"
6927 pkgconfig_generate libswscale    "FFmpeg image rescaling library"       "$LIBSWSCALE_VERSION"    "$LIBM"
6928 pkgconfig_generate libswresample "FFmpeg audio resampling library"      "$LIBSWRESAMPLE_VERSION" "$LIBM $LIBSOXR"