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_func
1997     as_object_arch
1998     asm_mod_q
1999     attribute_may_alias
2000     attribute_packed
2001     ebp_available
2002     ebx_available
2003     gnu_as
2004     gnu_windres
2005     ibm_asm
2006     inline_asm_direct_symbol_refs
2007     inline_asm_labels
2008     inline_asm_nonlocal_labels
2009     pragma_deprecated
2010     rsync_contimeout
2011     symver_asm_label
2012     symver_gnu_asm
2013     vfp_args
2014     xform_asm
2015     xmm_clobbers
2016 "
2017
2018 TYPES_LIST="
2019     CONDITION_VARIABLE_Ptr
2020     socklen_t
2021     struct_addrinfo
2022     struct_group_source_req
2023     struct_ip_mreq_source
2024     struct_ipv6_mreq
2025     struct_msghdr_msg_flags
2026     struct_pollfd
2027     struct_rusage_ru_maxrss
2028     struct_sctp_event_subscribe
2029     struct_sockaddr_in6
2030     struct_sockaddr_sa_len
2031     struct_sockaddr_storage
2032     struct_stat_st_mtim_tv_nsec
2033     struct_v4l2_frmivalenum_discrete
2034 "
2035
2036 HAVE_LIST="
2037     $ARCH_EXT_LIST
2038     $(add_suffix _external $ARCH_EXT_LIST)
2039     $(add_suffix _inline   $ARCH_EXT_LIST)
2040     $ARCH_FEATURES
2041     $ATOMICS_LIST
2042     $BUILTIN_LIST
2043     $COMPLEX_FUNCS
2044     $HAVE_LIST_CMDLINE
2045     $HAVE_LIST_PUB
2046     $HEADERS_LIST
2047     $INTRINSICS_LIST
2048     $MATH_FUNCS
2049     $SYSTEM_FUNCS
2050     $THREADS_LIST
2051     $TOOLCHAIN_FEATURES
2052     $TYPES_LIST
2053     atomics_native
2054     dos_paths
2055     dxva2_lib
2056     dxva2api_cobj
2057     libc_msvcrt
2058     libdc1394_1
2059     libdc1394_2
2060     makeinfo
2061     makeinfo_html
2062     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2063     perl
2064     pod2man
2065     sdl2
2066     section_data_rel_ro
2067     texi2html
2068     threads
2069     vaapi_drm
2070     vaapi_x11
2071     vdpau_x11
2072     winrt
2073     xlib
2074 "
2075
2076 # options emitted with CONFIG_ prefix but not available on the command line
2077 CONFIG_EXTRA="
2078     aandcttables
2079     ac3dsp
2080     audio_frame_queue
2081     audiodsp
2082     blockdsp
2083     bswapdsp
2084     cabac
2085     dirac_parse
2086     dvprofile
2087     exif
2088     faandct
2089     faanidct
2090     fdctdsp
2091     flacdsp
2092     fmtconvert
2093     frame_thread_encoder
2094     g722dsp
2095     golomb
2096     gplv3
2097     h263dsp
2098     h264chroma
2099     h264dsp
2100     h264parse
2101     h264pred
2102     h264qpel
2103     hpeldsp
2104     huffman
2105     huffyuvdsp
2106     huffyuvencdsp
2107     idctdsp
2108     iirfilter
2109     imdct15
2110     intrax8
2111     iso_media
2112     ividsp
2113     jpegtables
2114     lgplv3
2115     libx262
2116     llauddsp
2117     llviddsp
2118     llvidencdsp
2119     lpc
2120     lzf
2121     me_cmp
2122     mpeg_er
2123     mpegaudio
2124     mpegaudiodsp
2125     mpegvideo
2126     mpegvideoenc
2127     mss34dsp
2128     pixblockdsp
2129     qpeldsp
2130     qsv
2131     qsvdec
2132     qsvenc
2133     rangecoder
2134     riffdec
2135     riffenc
2136     rtpdec
2137     rtpenc_chain
2138     rv34dsp
2139     sinewin
2140     snappy
2141     srtp
2142     startcode
2143     texturedsp
2144     texturedspenc
2145     tpeldsp
2146     vaapi_encode
2147     vc1dsp
2148     videodsp
2149     vp3dsp
2150     vp56dsp
2151     vp8dsp
2152     vt_bt2020
2153     wma_freqs
2154     wmv2dsp
2155 "
2156
2157 CMDLINE_SELECT="
2158     $ARCH_EXT_LIST
2159     $CONFIG_LIST
2160     $HAVE_LIST_CMDLINE
2161     $THREADS_LIST
2162     asm
2163     cross_compile
2164     debug
2165     extra_warnings
2166     logging
2167     lto
2168     optimizations
2169     rpath
2170     stripping
2171 "
2172
2173 PATHS_LIST="
2174     bindir
2175     datadir
2176     docdir
2177     incdir
2178     libdir
2179     mandir
2180     pkgconfigdir
2181     prefix
2182     shlibdir
2183     install_name_dir
2184 "
2185
2186 CMDLINE_SET="
2187     $PATHS_LIST
2188     ar
2189     arch
2190     as
2191     assert_level
2192     build_suffix
2193     cc
2194     objcc
2195     cpu
2196     cross_prefix
2197     custom_allocator
2198     cxx
2199     dep_cc
2200     doxygen
2201     env
2202     extra_version
2203     gas
2204     host_cc
2205     host_cflags
2206     host_ld
2207     host_ldflags
2208     host_libs
2209     host_os
2210     install
2211     ld
2212     ln_s
2213     logfile
2214     malloc_prefix
2215     nm
2216     optflags
2217     pkg_config
2218     pkg_config_flags
2219     progs_suffix
2220     random_seed
2221     ranlib
2222     samples
2223     strip
2224     sws_max_filter_size
2225     sysinclude
2226     sysroot
2227     target_exec
2228     target_os
2229     target_path
2230     target_samples
2231     tempprefix
2232     toolchain
2233     valgrind
2234     yasmexe
2235 "
2236
2237 CMDLINE_APPEND="
2238     extra_cflags
2239     extra_cxxflags
2240     extra_objcflags
2241     host_cppflags
2242 "
2243
2244 # code dependency declarations
2245
2246 # architecture extensions
2247
2248 armv5te_deps="arm"
2249 armv6_deps="arm"
2250 armv6t2_deps="arm"
2251 armv8_deps="aarch64"
2252 neon_deps_any="aarch64 arm"
2253 intrinsics_neon_deps="neon"
2254 vfp_deps_any="aarch64 arm"
2255 vfpv3_deps="vfp"
2256 setend_deps="arm"
2257
2258 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2259
2260 loongson2_deps="mips"
2261 loongson3_deps="mips"
2262 mipsfpu_deps="mips"
2263 mipsdsp_deps="mips"
2264 mipsdspr2_deps="mips"
2265 mips32r2_deps="mips"
2266 mips32r5_deps="mips"
2267 mips32r6_deps="mips"
2268 mips64r2_deps="mips"
2269 mips64r6_deps="mips"
2270 msa_deps="mipsfpu"
2271 mmi_deps="mips"
2272
2273 altivec_deps="ppc"
2274 dcbzl_deps="ppc"
2275 ldbrx_deps="ppc"
2276 ppc4xx_deps="ppc"
2277 vsx_deps="altivec"
2278 power8_deps="vsx"
2279
2280 cpunop_deps="i686"
2281 x86_64_select="i686"
2282 x86_64_suggest="fast_cmov"
2283
2284 amd3dnow_deps="mmx"
2285 amd3dnowext_deps="amd3dnow"
2286 i686_deps="x86"
2287 mmx_deps="x86"
2288 mmxext_deps="mmx"
2289 sse_deps="mmxext"
2290 sse2_deps="sse"
2291 sse3_deps="sse2"
2292 ssse3_deps="sse3"
2293 sse4_deps="ssse3"
2294 sse42_deps="sse4"
2295 aesni_deps="sse42"
2296 avx_deps="sse42"
2297 xop_deps="avx"
2298 fma3_deps="avx"
2299 fma4_deps="avx"
2300 avx2_deps="avx"
2301
2302 mmx_external_deps="yasm"
2303 mmx_inline_deps="inline_asm"
2304 mmx_suggest="mmx_external mmx_inline"
2305
2306 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2307     eval dep=\$${ext}_deps
2308     eval ${ext}_external_deps='"${dep}_external"'
2309     eval ${ext}_inline_deps='"${dep}_inline"'
2310     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2311 done
2312
2313 aligned_stack_if_any="aarch64 ppc x86"
2314 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2315 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2316 fast_unaligned_if_any="aarch64 ppc x86"
2317 simd_align_16_if_any="altivec neon sse"
2318
2319 # system capabilities
2320 symver_if_any="symver_asm_label symver_gnu_asm"
2321 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
2322
2323 # threading support
2324 atomics_gcc_if_any="sync_val_compare_and_swap atomic_compare_exchange"
2325 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2326 atomics_win32_if="MemoryBarrier"
2327 atomics_native_if_any="$ATOMICS_LIST"
2328 w32threads_deps="atomics_native"
2329 threads_if_any="$THREADS_LIST"
2330
2331 # subsystems
2332 dct_select="rdft"
2333 dirac_parse_select="golomb"
2334 error_resilience_select="me_cmp"
2335 faandct_deps="faan fdctdsp"
2336 faanidct_deps="faan idctdsp"
2337 h264dsp_select="startcode"
2338 frame_thread_encoder_deps="encoders threads"
2339 intrax8_select="blockdsp idctdsp"
2340 mdct_select="fft"
2341 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2342 mpeg_er_select="error_resilience"
2343 mpegaudio_select="mpegaudiodsp"
2344 mpegaudiodsp_select="dct"
2345 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2346 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2347 vc1dsp_select="h264chroma qpeldsp startcode"
2348 rdft_select="fft"
2349
2350 # decoders / encoders
2351 aac_decoder_select="imdct15 mdct sinewin"
2352 aac_fixed_decoder_select="mdct sinewin"
2353 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2354 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2355 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2356 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2357 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2358 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2359 adpcm_g722_decoder_select="g722dsp"
2360 adpcm_g722_encoder_select="g722dsp"
2361 aic_decoder_select="golomb idctdsp"
2362 alac_encoder_select="lpc"
2363 als_decoder_select="bswapdsp"
2364 amrnb_decoder_select="lsp"
2365 amrwb_decoder_select="lsp"
2366 amv_decoder_select="sp5x_decoder exif"
2367 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2368 ape_decoder_select="bswapdsp llauddsp"
2369 apng_decoder_select="zlib"
2370 apng_encoder_select="llvidencdsp zlib"
2371 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2372 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2373 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2374 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2375 atrac1_decoder_select="mdct sinewin"
2376 atrac3_decoder_select="mdct"
2377 atrac3p_decoder_select="mdct sinewin"
2378 avrn_decoder_select="exif jpegtables"
2379 bink_decoder_select="blockdsp hpeldsp"
2380 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2381 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2382 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2383 cllc_decoder_select="bswapdsp"
2384 comfortnoise_encoder_select="lpc"
2385 cook_decoder_select="audiodsp mdct sinewin"
2386 cscd_decoder_select="lzo"
2387 cscd_decoder_suggest="zlib"
2388 dca_decoder_select="mdct"
2389 dds_decoder_select="texturedsp"
2390 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2391 dnxhd_decoder_select="blockdsp idctdsp"
2392 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2393 dvvideo_decoder_select="dvprofile idctdsp"
2394 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2395 dxa_decoder_select="zlib"
2396 dxv_decoder_select="lzf texturedsp"
2397 eac3_decoder_select="ac3_decoder"
2398 eac3_encoder_select="ac3_encoder"
2399 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2400 eatgq_decoder_select="aandcttables"
2401 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2402 exr_decoder_select="zlib"
2403 ffv1_decoder_select="golomb rangecoder"
2404 ffv1_encoder_select="rangecoder"
2405 ffvhuff_decoder_select="huffyuv_decoder"
2406 ffvhuff_encoder_select="huffyuv_encoder"
2407 fic_decoder_select="golomb"
2408 flac_decoder_select="flacdsp golomb"
2409 flac_encoder_select="bswapdsp flacdsp golomb lpc"
2410 flashsv2_decoder_select="zlib"
2411 flashsv2_encoder_select="zlib"
2412 flashsv_decoder_select="zlib"
2413 flashsv_encoder_select="zlib"
2414 flv_decoder_select="h263_decoder"
2415 flv_encoder_select="h263_encoder"
2416 fourxm_decoder_select="blockdsp bswapdsp"
2417 fraps_decoder_select="bswapdsp huffman"
2418 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2419 g729_decoder_select="audiodsp"
2420 h261_decoder_select="mpegvideo"
2421 h261_encoder_select="aandcttables mpegvideoenc"
2422 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2423 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2424 h263i_decoder_select="h263_decoder"
2425 h263p_decoder_select="h263_decoder"
2426 h263p_encoder_select="h263_encoder"
2427 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2428 h264_decoder_suggest="error_resilience"
2429 hap_decoder_select="snappy texturedsp"
2430 hap_encoder_deps="libsnappy"
2431 hap_encoder_select="texturedspenc"
2432 hevc_decoder_select="bswapdsp cabac golomb videodsp"
2433 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2434 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2435 iac_decoder_select="imc_decoder"
2436 imc_decoder_select="bswapdsp fft mdct sinewin"
2437 indeo3_decoder_select="hpeldsp"
2438 indeo4_decoder_select="ividsp"
2439 indeo5_decoder_select="ividsp"
2440 interplay_video_decoder_select="hpeldsp"
2441 jpegls_decoder_select="golomb mjpeg_decoder"
2442 jpegls_encoder_select="golomb"
2443 jv_decoder_select="blockdsp"
2444 lagarith_decoder_select="llviddsp"
2445 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2446 loco_decoder_select="golomb"
2447 magicyuv_decoder_select="llviddsp"
2448 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2449 metasound_decoder_select="lsp mdct sinewin"
2450 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2451 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2452 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2453 mjpegb_decoder_select="mjpeg_decoder"
2454 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2455 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2456 mlp_decoder_select="mlp_parser"
2457 motionpixels_decoder_select="bswapdsp"
2458 mp1_decoder_select="mpegaudio"
2459 mp1float_decoder_select="mpegaudio"
2460 mp2_decoder_select="mpegaudio"
2461 mp2float_decoder_select="mpegaudio"
2462 mp3_decoder_select="mpegaudio"
2463 mp3adu_decoder_select="mpegaudio"
2464 mp3adufloat_decoder_select="mpegaudio"
2465 mp3float_decoder_select="mpegaudio"
2466 mp3on4_decoder_select="mpegaudio"
2467 mp3on4float_decoder_select="mpegaudio"
2468 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2469 mpc8_decoder_select="mpegaudiodsp"
2470 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2471 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2472 mpegvideo_decoder_select="mpegvideo"
2473 mpeg1video_decoder_select="mpegvideo"
2474 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2475 mpeg2video_decoder_select="mpegvideo"
2476 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2477 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2478 mpeg4_encoder_select="h263_encoder"
2479 msa1_decoder_select="mss34dsp"
2480 msmpeg4v1_decoder_select="h263_decoder"
2481 msmpeg4v2_decoder_select="h263_decoder"
2482 msmpeg4v2_encoder_select="h263_encoder"
2483 msmpeg4v3_decoder_select="h263_decoder"
2484 msmpeg4v3_encoder_select="h263_encoder"
2485 mss2_decoder_select="vc1_decoder mpegvideo"
2486 mts2_decoder_select="mss34dsp"
2487 mxpeg_decoder_select="mjpeg_decoder"
2488 nellymoser_decoder_select="mdct sinewin"
2489 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2490 nuv_decoder_select="idctdsp lzo"
2491 on2avc_decoder_select="mdct"
2492 opus_decoder_deps="swresample"
2493 opus_decoder_select="imdct15"
2494 png_decoder_select="zlib"
2495 png_encoder_select="llvidencdsp zlib"
2496 prores_decoder_select="blockdsp idctdsp"
2497 prores_encoder_select="fdctdsp"
2498 qcelp_decoder_select="lsp"
2499 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2500 ra_144_decoder_select="audiodsp"
2501 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2502 ralf_decoder_select="golomb"
2503 rawvideo_decoder_select="bswapdsp"
2504 rscc_decoder_select="zlib"
2505 rtjpeg_decoder_select="me_cmp"
2506 rv10_decoder_select="h263_decoder"
2507 rv10_encoder_select="h263_encoder"
2508 rv20_decoder_select="h263_decoder"
2509 rv20_encoder_select="h263_encoder"
2510 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2511 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2512 screenpresso_decoder_select="zlib"
2513 shorten_decoder_select="golomb"
2514 sipr_decoder_select="lsp"
2515 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2516 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2517 sonic_decoder_select="golomb rangecoder"
2518 sonic_encoder_select="golomb rangecoder"
2519 sonic_ls_encoder_select="golomb rangecoder"
2520 sp5x_decoder_select="mjpeg_decoder"
2521 svq1_decoder_select="hpeldsp"
2522 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2523 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2524 svq3_decoder_suggest="zlib"
2525 tak_decoder_select="audiodsp"
2526 tdsc_decoder_select="zlib mjpeg_decoder"
2527 theora_decoder_select="vp3_decoder"
2528 thp_decoder_select="mjpeg_decoder"
2529 tiff_decoder_suggest="zlib lzma"
2530 tiff_encoder_suggest="zlib"
2531 truehd_decoder_select="mlp_parser"
2532 truemotion2_decoder_select="bswapdsp"
2533 truespeech_decoder_select="bswapdsp"
2534 tscc_decoder_select="zlib"
2535 twinvq_decoder_select="mdct lsp sinewin"
2536 txd_decoder_select="texturedsp"
2537 utvideo_decoder_select="bswapdsp llviddsp"
2538 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2539 vble_decoder_select="llviddsp"
2540 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2541 vc1_qsv_decoder_deps="libmfx"
2542 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel"
2543 vc1image_decoder_select="vc1_decoder"
2544 vorbis_decoder_select="mdct"
2545 vorbis_encoder_select="mdct"
2546 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2547 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2548 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2549 vp6a_decoder_select="vp6_decoder"
2550 vp6f_decoder_select="vp6_decoder"
2551 vp7_decoder_select="h264pred videodsp vp8dsp"
2552 vp8_decoder_select="h264pred videodsp vp8dsp"
2553 vp9_decoder_select="videodsp vp9_parser"
2554 webp_decoder_select="vp8_decoder exif"
2555 wmalossless_decoder_select="llauddsp"
2556 wmapro_decoder_select="mdct sinewin wma_freqs"
2557 wmav1_decoder_select="mdct sinewin wma_freqs"
2558 wmav1_encoder_select="mdct sinewin wma_freqs"
2559 wmav2_decoder_select="mdct sinewin wma_freqs"
2560 wmav2_encoder_select="mdct sinewin wma_freqs"
2561 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2562 wmv1_decoder_select="h263_decoder"
2563 wmv1_encoder_select="h263_encoder"
2564 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2565 wmv2_encoder_select="h263_encoder wmv2dsp"
2566 wmv3_decoder_select="vc1_decoder"
2567 wmv3image_decoder_select="wmv3_decoder"
2568 xma1_decoder_select="wmapro_decoder"
2569 xma2_decoder_select="wmapro_decoder"
2570 zerocodec_decoder_select="zlib"
2571 zlib_decoder_select="zlib"
2572 zlib_encoder_select="zlib"
2573 zmbv_decoder_select="zlib"
2574 zmbv_encoder_select="zlib"
2575
2576 # platform codecs
2577 audiotoolbox_deps="AudioToolbox_AudioToolbox_h"
2578 audiotoolbox_extralibs="-framework CoreFoundation -framework AudioToolbox -framework CoreMedia"
2579
2580 # hardware accelerators
2581 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2582 cuda_deps_any="dlopen LoadLibrary"
2583 cuvid_deps="cuda"
2584 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2585 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2586 dxva2_extralibs="-luser32"
2587 vaapi_deps="va_va_h"
2588 vda_framework_deps="VideoDecodeAcceleration_VDADecoder_h"
2589 vda_framework_extralibs="-framework VideoDecodeAcceleration"
2590 vda_deps="vda_framework pthreads"
2591 vda_extralibs="-framework CoreFoundation -framework QuartzCore"
2592 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2593 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2594 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2595 xvmc_deps="X11_extensions_XvMClib_h"
2596
2597 h263_vaapi_hwaccel_deps="vaapi"
2598 h263_vaapi_hwaccel_select="h263_decoder"
2599 h263_videotoolbox_hwaccel_deps="videotoolbox"
2600 h263_videotoolbox_hwaccel_select="h263_decoder"
2601 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2602 h264_cuvid_hwaccel_deps="cuda cuvid"
2603 h264_d3d11va_hwaccel_deps="d3d11va"
2604 h264_d3d11va_hwaccel_select="h264_decoder"
2605 h264_dxva2_hwaccel_deps="dxva2"
2606 h264_dxva2_hwaccel_select="h264_decoder"
2607 h264_mediacodec_decoder_deps="mediacodec"
2608 h264_mediacodec_hwaccel_deps="mediacodec"
2609 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2610 h264_mmal_decoder_deps="mmal"
2611 h264_mmal_decoder_select="mmal"
2612 h264_mmal_hwaccel_deps="mmal"
2613 h264_omx_encoder_deps="omx"
2614 h264_qsv_hwaccel_deps="libmfx"
2615 h264_vaapi_hwaccel_deps="vaapi"
2616 h264_vaapi_hwaccel_select="h264_decoder"
2617 h264_vda_decoder_deps="vda"
2618 h264_vda_decoder_select="h264_decoder"
2619 h264_vda_hwaccel_deps="vda"
2620 h264_vda_hwaccel_select="h264_decoder"
2621 h264_vda_old_hwaccel_deps="vda"
2622 h264_vda_old_hwaccel_select="h264_decoder"
2623 h264_vdpau_decoder_deps="vdpau"
2624 h264_vdpau_decoder_select="h264_decoder"
2625 h264_vdpau_hwaccel_deps="vdpau"
2626 h264_vdpau_hwaccel_select="h264_decoder"
2627 h264_videotoolbox_hwaccel_deps="videotoolbox"
2628 h264_videotoolbox_hwaccel_select="h264_decoder"
2629 hevc_cuvid_hwaccel_deps="cuda cuvid"
2630 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2631 hevc_d3d11va_hwaccel_select="hevc_decoder"
2632 hevc_mediacodec_decoder_deps="mediacodec"
2633 hevc_mediacodec_hwaccel_deps="mediacodec"
2634 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2635 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2636 hevc_dxva2_hwaccel_select="hevc_decoder"
2637 hevc_qsv_hwaccel_deps="libmfx"
2638 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2639 hevc_vaapi_hwaccel_select="hevc_decoder"
2640 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2641 hevc_vdpau_hwaccel_select="hevc_decoder"
2642 mjpeg_cuvid_hwaccel_deps="cuda cuvid"
2643 mpeg_vdpau_decoder_deps="vdpau"
2644 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2645 mpeg_xvmc_hwaccel_deps="xvmc"
2646 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2647 mpeg1_cuvid_hwaccel_deps="cuda cuvid"
2648 mpeg1_vdpau_decoder_deps="vdpau"
2649 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2650 mpeg1_vdpau_hwaccel_deps="vdpau"
2651 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2652 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2653 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2654 mpeg1_xvmc_hwaccel_deps="xvmc"
2655 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2656 mpeg2_crystalhd_decoder_select="crystalhd"
2657 mpeg2_cuvid_hwaccel_deps="cuda cuvid"
2658 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2659 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2660 mpeg2_dxva2_hwaccel_deps="dxva2"
2661 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2662 mpeg2_mmal_decoder_deps="mmal"
2663 mpeg2_mmal_decoder_select="mmal"
2664 mpeg2_mmal_hwaccel_deps="mmal"
2665 mpeg2_qsv_hwaccel_deps="libmfx"
2666 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2667 mpeg2_vaapi_hwaccel_deps="vaapi"
2668 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2669 mpeg2_vdpau_hwaccel_deps="vdpau"
2670 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2671 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2672 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2673 mpeg2_xvmc_hwaccel_deps="xvmc"
2674 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2675 mpeg4_crystalhd_decoder_select="crystalhd"
2676 mpeg4_cuvid_hwaccel_deps="cuda cuvid"
2677 mpeg4_mediacodec_decoder_deps="mediacodec"
2678 mpeg4_mediacodec_hwaccel_deps="mediacodec"
2679 mpeg4_mmal_decoder_deps="mmal"
2680 mpeg4_mmal_decoder_select="mmal"
2681 mpeg4_mmal_hwaccel_deps="mmal"
2682 mpeg4_omx_encoder_deps="omx"
2683 mpeg4_vaapi_hwaccel_deps="vaapi"
2684 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2685 mpeg4_vdpau_decoder_deps="vdpau"
2686 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2687 mpeg4_vdpau_hwaccel_deps="vdpau"
2688 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2689 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2690 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2691 msmpeg4_crystalhd_decoder_select="crystalhd"
2692 vc1_crystalhd_decoder_select="crystalhd"
2693 vc1_cuvid_hwaccel_deps="cuda cuvid"
2694 vc1_d3d11va_hwaccel_deps="d3d11va"
2695 vc1_d3d11va_hwaccel_select="vc1_decoder"
2696 vc1_dxva2_hwaccel_deps="dxva2"
2697 vc1_dxva2_hwaccel_select="vc1_decoder"
2698 vc1_mmal_decoder_deps="mmal"
2699 vc1_mmal_decoder_select="mmal"
2700 vc1_mmal_hwaccel_deps="mmal"
2701 vc1_qsv_hwaccel_deps="libmfx"
2702 vc1_qsv_hwaccel_select="qsvdec_vc1"
2703 vc1_vaapi_hwaccel_deps="vaapi"
2704 vc1_vaapi_hwaccel_select="vc1_decoder"
2705 vc1_vdpau_decoder_deps="vdpau"
2706 vc1_vdpau_decoder_select="vc1_decoder"
2707 vc1_vdpau_hwaccel_deps="vdpau"
2708 vc1_vdpau_hwaccel_select="vc1_decoder"
2709 vp8_cuvid_hwaccel_deps="cuda cuvid"
2710 vp9_cuvid_hwaccel_deps="cuda cuvid"
2711 vp8_mediacodec_decoder_deps="mediacodec"
2712 vp8_mediacodec_hwaccel_deps="mediacodec"
2713 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2714 vp9_d3d11va_hwaccel_select="vp9_decoder"
2715 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2716 vp9_dxva2_hwaccel_select="vp9_decoder"
2717 vp9_mediacodec_decoder_deps="mediacodec"
2718 vp9_mediacodec_hwaccel_deps="mediacodec"
2719 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2720 vp9_vaapi_hwaccel_select="vp9_decoder"
2721 wmv3_crystalhd_decoder_select="crystalhd"
2722 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2723 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2724 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2725 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2726 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2727
2728 # hardware-accelerated codecs
2729 omx_deps="dlopen pthreads"
2730 omx_extralibs='$ldl'
2731 qsvdec_select="qsv"
2732 qsvenc_select="qsv"
2733 vaapi_encode_deps="vaapi"
2734
2735 hwupload_cuda_filter_deps="cuda"
2736 scale_npp_filter_deps="cuda libnpp"
2737
2738 nvenc_deps="cuda"
2739 nvenc_deps_any="dlopen LoadLibrary"
2740 nvenc_encoder_deps="nvenc"
2741 h264_cuvid_decoder_deps="cuda cuvid"
2742 h264_cuvid_decoder_select="h264_mp4toannexb_bsf h264_cuvid_hwaccel"
2743 h264_nvenc_encoder_deps="nvenc"
2744 h264_qsv_decoder_deps="libmfx"
2745 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2746 h264_qsv_encoder_deps="libmfx"
2747 h264_qsv_encoder_select="qsvenc"
2748 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2749 h264_vaapi_encoder_select="vaapi_encode golomb"
2750
2751 hevc_cuvid_decoder_deps="cuda cuvid"
2752 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf hevc_cuvid_hwaccel"
2753 hevc_nvenc_encoder_deps="nvenc"
2754 hevc_qsv_decoder_deps="libmfx"
2755 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2756 hevc_qsv_encoder_deps="libmfx"
2757 hevc_qsv_encoder_select="qsvenc"
2758 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2759 hevc_vaapi_encoder_select="vaapi_encode golomb"
2760 mjpeg_cuvid_decoder_deps="cuda cuvid"
2761 mjpeg_cuvid_decoder_select="mjpeg_cuvid_hwaccel"
2762 mpeg1_cuvid_decoder_deps="cuda cuvid"
2763 mpeg1_cuvid_decoder_select="mpeg1_cuvid_hwaccel"
2764 mpeg2_cuvid_decoder_deps="cuda cuvid"
2765 mpeg2_cuvid_decoder_select="mpeg2_cuvid_hwaccel"
2766 mpeg2_qsv_decoder_deps="libmfx"
2767 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2768 mpeg2_qsv_encoder_deps="libmfx"
2769 mpeg2_qsv_encoder_select="qsvenc"
2770 mpeg4_cuvid_decoder_deps="cuda cuvid"
2771 mpeg4_cuvid_decoder_select="mpeg4_cuvid_hwaccel"
2772 nvenc_h264_encoder_deps="nvenc"
2773 nvenc_hevc_encoder_deps="nvenc"
2774
2775 vc1_cuvid_decoder_deps="cuda cuvid"
2776 vc1_cuvid_decoder_select="vc1_cuvid_hwaccel"
2777 vp8_cuvid_decoder_deps="cuda cuvid"
2778 vp8_cuvid_decoder_select="vp8_cuvid_hwaccel"
2779 vp9_cuvid_decoder_deps="cuda cuvid"
2780 vp9_cuvid_decoder_select="vp9_cuvid_hwaccel"
2781
2782 # parsers
2783 h264_parser_select="golomb h264dsp h264parse"
2784 hevc_parser_select="golomb"
2785 mpegvideo_parser_select="mpegvideo"
2786 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2787 vc1_parser_select="vc1dsp"
2788
2789 # bitstream_filters
2790 mjpeg2jpeg_bsf_select="jpegtables"
2791
2792 # external libraries
2793 aac_at_decoder_deps="audiotoolbox"
2794 ac3_at_decoder_deps="audiotoolbox"
2795 ac3_at_decoder_select="ac3_parser"
2796 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2797 alac_at_decoder_deps="audiotoolbox"
2798 amr_nb_at_decoder_deps="audiotoolbox"
2799 avisynth_deps_any="dlopen LoadLibrary"
2800 avisynth_demuxer_deps="avisynth"
2801 avisynth_demuxer_select="riffdec"
2802 eac3_at_decoder_deps="audiotoolbox"
2803 eac3_at_decoder_select="ac3_parser"
2804 gsm_ms_at_decoder_deps="audiotoolbox"
2805 ilbc_at_decoder_deps="audiotoolbox"
2806 mp1_at_decoder_deps="audiotoolbox"
2807 mp2_at_decoder_deps="audiotoolbox"
2808 mp3_at_decoder_deps="audiotoolbox"
2809 pcm_alaw_at_decoder_deps="audiotoolbox"
2810 pcm_mulaw_at_decoder_deps="audiotoolbox"
2811 qdmc_at_decoder_deps="audiotoolbox"
2812 qdm2_at_decoder_deps="audiotoolbox"
2813 aac_at_encoder_deps="audiotoolbox"
2814 aac_at_encoder_select="audio_frame_queue"
2815 alac_at_encoder_deps="audiotoolbox"
2816 alac_at_encoder_select="audio_frame_queue"
2817 ilbc_at_encoder_deps="audiotoolbox"
2818 ilbc_at_encoder_select="audio_frame_queue"
2819 pcm_alaw_at_encoder_deps="audiotoolbox"
2820 pcm_alaw_at_encoder_select="audio_frame_queue"
2821 pcm_mulaw_at_encoder_deps="audiotoolbox"
2822 pcm_mulaw_at_encoder_select="audio_frame_queue"
2823 chromaprint_muxer_deps="chromaprint"
2824 h264_videotoolbox_encoder_deps="videotoolbox_encoder pthreads"
2825 libcelt_decoder_deps="libcelt"
2826 libfdk_aac_decoder_deps="libfdk_aac"
2827 libfdk_aac_encoder_deps="libfdk_aac"
2828 libfdk_aac_encoder_select="audio_frame_queue"
2829 libgme_demuxer_deps="libgme"
2830 libgsm_decoder_deps="libgsm"
2831 libgsm_encoder_deps="libgsm"
2832 libgsm_ms_decoder_deps="libgsm"
2833 libgsm_ms_encoder_deps="libgsm"
2834 libilbc_decoder_deps="libilbc"
2835 libilbc_encoder_deps="libilbc"
2836 libkvazaar_encoder_deps="libkvazaar"
2837 libmodplug_demuxer_deps="libmodplug"
2838 libmp3lame_encoder_deps="libmp3lame"
2839 libmp3lame_encoder_select="audio_frame_queue"
2840 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2841 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2842 libopencore_amrnb_encoder_select="audio_frame_queue"
2843 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2844 libopenh264_decoder_deps="libopenh264"
2845 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2846 libopenh264_encoder_deps="libopenh264"
2847 libopenjpeg_decoder_deps="libopenjpeg"
2848 libopenjpeg_encoder_deps="libopenjpeg"
2849 libopenmpt_demuxer_deps="libopenmpt"
2850 libopus_decoder_deps="libopus"
2851 libopus_encoder_deps="libopus"
2852 libopus_encoder_select="audio_frame_queue"
2853 libschroedinger_decoder_deps="libschroedinger"
2854 libschroedinger_encoder_deps="libschroedinger"
2855 libshine_encoder_deps="libshine"
2856 libshine_encoder_select="audio_frame_queue"
2857 libspeex_decoder_deps="libspeex"
2858 libspeex_encoder_deps="libspeex"
2859 libspeex_encoder_select="audio_frame_queue"
2860 libtheora_encoder_deps="libtheora"
2861 libtwolame_encoder_deps="libtwolame"
2862 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2863 libvorbis_decoder_deps="libvorbis"
2864 libvorbis_encoder_deps="libvorbis"
2865 libvorbis_encoder_select="audio_frame_queue"
2866 libvpx_vp8_decoder_deps="libvpx"
2867 libvpx_vp8_encoder_deps="libvpx"
2868 libvpx_vp9_decoder_deps="libvpx"
2869 libvpx_vp9_encoder_deps="libvpx"
2870 libwavpack_encoder_deps="libwavpack"
2871 libwebp_encoder_deps="libwebp"
2872 libwebp_anim_encoder_deps="libwebp"
2873 libx262_encoder_deps="libx262"
2874 libx264_encoder_deps="libx264"
2875 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2876 libx264rgb_encoder_select="libx264_encoder"
2877 libx265_encoder_deps="libx265"
2878 libxavs_encoder_deps="libxavs"
2879 libxvid_encoder_deps="libxvid"
2880 libzvbi_teletext_decoder_deps="libzvbi"
2881 videotoolbox_deps="VideoToolbox_VideoToolbox_h"
2882 videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework CoreVideo"
2883 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2884 videotoolbox_encoder_suggest="vda_framework vt_bt2020"
2885 vt_bt2020_deps="kCVImageBufferColorPrimaries_ITU_R_2020"
2886
2887 # demuxers / muxers
2888 ac3_demuxer_select="ac3_parser"
2889 aiff_muxer_select="iso_media"
2890 asf_demuxer_select="riffdec"
2891 asf_o_demuxer_select="riffdec"
2892 asf_muxer_select="riffenc"
2893 asf_stream_muxer_select="asf_muxer"
2894 avi_demuxer_select="iso_media riffdec exif"
2895 avi_muxer_select="riffenc"
2896 caf_demuxer_select="iso_media riffdec"
2897 caf_muxer_select="iso_media"
2898 dash_muxer_select="mp4_muxer"
2899 dirac_demuxer_select="dirac_parser"
2900 dts_demuxer_select="dca_parser"
2901 dtshd_demuxer_select="dca_parser"
2902 dv_demuxer_select="dvprofile"
2903 dv_muxer_select="dvprofile"
2904 dxa_demuxer_select="riffdec"
2905 eac3_demuxer_select="ac3_parser"
2906 f4v_muxer_select="mov_muxer"
2907 fifo_muxer_deps="threads"
2908 flac_demuxer_select="flac_parser"
2909 hds_muxer_select="flv_muxer"
2910 hls_muxer_select="mpegts_muxer"
2911 image2_alias_pix_demuxer_select="image2_demuxer"
2912 image2_brender_pix_demuxer_select="image2_demuxer"
2913 ipod_muxer_select="mov_muxer"
2914 ismv_muxer_select="mov_muxer"
2915 libnut_demuxer_deps="libnut"
2916 libnut_muxer_deps="libnut"
2917 matroska_audio_muxer_select="matroska_muxer"
2918 matroska_demuxer_select="iso_media riffdec"
2919 matroska_demuxer_suggest="bzlib lzo zlib"
2920 matroska_muxer_select="iso_media riffenc"
2921 mmf_muxer_select="riffenc"
2922 mov_demuxer_select="iso_media riffdec"
2923 mov_demuxer_suggest="zlib"
2924 mov_muxer_select="iso_media riffenc rtpenc_chain"
2925 mp3_demuxer_select="mpegaudio_parser"
2926 mp4_muxer_select="mov_muxer"
2927 mpegts_demuxer_select="iso_media"
2928 mpegts_muxer_select="adts_muxer latm_muxer"
2929 mpegtsraw_demuxer_select="mpegts_demuxer"
2930 mxf_d10_muxer_select="mxf_muxer"
2931 mxf_opatom_muxer_select="mxf_muxer"
2932 nut_muxer_select="riffenc"
2933 nuv_demuxer_select="riffdec"
2934 oga_muxer_select="ogg_muxer"
2935 ogg_demuxer_select="dirac_parse"
2936 ogv_muxer_select="ogg_muxer"
2937 opus_muxer_select="ogg_muxer"
2938 psp_muxer_select="mov_muxer"
2939 rtp_demuxer_select="sdp_demuxer"
2940 rtp_muxer_select="golomb"
2941 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2942 rtsp_demuxer_select="http_protocol rtpdec"
2943 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2944 sap_demuxer_select="sdp_demuxer"
2945 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2946 sdp_demuxer_select="rtpdec"
2947 smoothstreaming_muxer_select="ismv_muxer"
2948 spdif_muxer_select="aac_parser"
2949 spx_muxer_select="ogg_muxer"
2950 swf_demuxer_suggest="zlib"
2951 tak_demuxer_select="tak_parser"
2952 tg2_muxer_select="mov_muxer"
2953 tgp_muxer_select="mov_muxer"
2954 vobsub_demuxer_select="mpegps_demuxer"
2955 w64_demuxer_select="wav_demuxer"
2956 w64_muxer_select="wav_muxer"
2957 wav_demuxer_select="riffdec"
2958 wav_muxer_select="riffenc"
2959 webm_muxer_select="iso_media riffenc"
2960 webm_dash_manifest_demuxer_select="matroska_demuxer"
2961 wtv_demuxer_select="mpegts_demuxer riffdec"
2962 wtv_muxer_select="mpegts_muxer riffenc"
2963 xmv_demuxer_select="riffdec"
2964 xwma_demuxer_select="riffdec"
2965
2966 # indevs / outdevs
2967 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2968 alsa_outdev_deps="alsa_asoundlib_h"
2969 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2970 avfoundation_indev_select="avfoundation"
2971 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2972 caca_outdev_deps="libcaca"
2973 decklink_indev_deps="decklink pthreads"
2974 decklink_indev_extralibs="-lstdc++"
2975 decklink_outdev_deps="decklink pthreads"
2976 decklink_outdev_extralibs="-lstdc++"
2977 dshow_indev_deps="IBaseFilter"
2978 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
2979 dv1394_indev_deps="dv1394"
2980 dv1394_indev_select="dv_demuxer"
2981 fbdev_indev_deps="linux_fb_h"
2982 fbdev_outdev_deps="linux_fb_h"
2983 gdigrab_indev_deps="CreateDIBSection"
2984 gdigrab_indev_extralibs="-lgdi32"
2985 gdigrab_indev_select="bmp_decoder"
2986 iec61883_indev_deps="libiec61883"
2987 jack_indev_deps="jack_jack_h"
2988 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2989 lavfi_indev_deps="avfilter"
2990 libcdio_indev_deps="libcdio"
2991 libdc1394_indev_deps="libdc1394"
2992 libv4l2_indev_deps="libv4l2"
2993 openal_indev_deps="openal"
2994 opengl_outdev_deps="opengl"
2995 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2996 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2997 pulse_indev_deps="libpulse"
2998 pulse_outdev_deps="libpulse"
2999 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
3000 qtkit_indev_select="qtkit"
3001 sdl2_outdev_deps="sdl2"
3002 sndio_indev_deps="sndio_h"
3003 sndio_outdev_deps="sndio_h"
3004 v4l_indev_deps="linux_videodev_h"
3005 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3006 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3007 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
3008 vfwcap_indev_extralibs="-lavicap32"
3009 x11grab_indev_deps="x11grab"
3010 x11grab_xcb_indev_deps="libxcb"
3011 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3012 xv_outdev_extralibs="-lXv -lX11 -lXext"
3013
3014 # protocols
3015 async_protocol_deps="threads"
3016 bluray_protocol_deps="libbluray"
3017 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
3018 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3019 ffrtmpcrypt_protocol_select="tcp_protocol"
3020 ffrtmphttp_protocol_deps="!librtmp_protocol"
3021 ffrtmphttp_protocol_select="http_protocol"
3022 ftp_protocol_select="tcp_protocol"
3023 gopher_protocol_select="network"
3024 http_protocol_select="tcp_protocol"
3025 httpproxy_protocol_select="tcp_protocol"
3026 https_protocol_select="tls_protocol"
3027 icecast_protocol_select="http_protocol"
3028 librtmp_protocol_deps="librtmp"
3029 librtmpe_protocol_deps="librtmp"
3030 librtmps_protocol_deps="librtmp"
3031 librtmpt_protocol_deps="librtmp"
3032 librtmpte_protocol_deps="librtmp"
3033 libsmbclient_protocol_deps="libsmbclient gplv3"
3034 libssh_protocol_deps="libssh"
3035 mmsh_protocol_select="http_protocol"
3036 mmst_protocol_select="network"
3037 rtmp_protocol_deps="!librtmp_protocol"
3038 rtmp_protocol_select="tcp_protocol"
3039 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3040 rtmps_protocol_deps="!librtmp_protocol"
3041 rtmps_protocol_select="tls_protocol"
3042 rtmpt_protocol_select="ffrtmphttp_protocol"
3043 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3044 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3045 rtp_protocol_select="udp_protocol"
3046 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3047 sctp_protocol_select="network"
3048 srtp_protocol_select="rtp_protocol srtp"
3049 tcp_protocol_select="network"
3050 tls_gnutls_protocol_deps="gnutls !tls_schannel_protocol !tls_securetransport_protocol"
3051 tls_gnutls_protocol_select="tcp_protocol"
3052 tls_openssl_protocol_deps="openssl !tls_schannel_protocol !tls_securetransport_protocol !tls_gnutls_protocol"
3053 tls_openssl_protocol_select="tcp_protocol"
3054 tls_schannel_protocol_deps="schannel"
3055 tls_schannel_protocol_select="tcp_protocol"
3056 tls_securetransport_protocol_deps="securetransport"
3057 tls_securetransport_protocol_select="tcp_protocol"
3058 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
3059 udp_protocol_select="network"
3060 udplite_protocol_select="network"
3061 unix_protocol_deps="sys_un_h"
3062 unix_protocol_select="network"
3063
3064 # filters
3065 afftfilt_filter_deps="avcodec"
3066 afftfilt_filter_select="fft"
3067 amovie_filter_deps="avcodec avformat"
3068 aresample_filter_deps="swresample"
3069 ass_filter_deps="libass"
3070 asyncts_filter_deps="avresample"
3071 atempo_filter_deps="avcodec"
3072 atempo_filter_select="rdft"
3073 azmq_filter_deps="libzmq"
3074 blackframe_filter_deps="gpl"
3075 boxblur_filter_deps="gpl"
3076 bs2b_filter_deps="libbs2b"
3077 colormatrix_filter_deps="gpl"
3078 cover_rect_filter_deps="avcodec avformat gpl"
3079 cropdetect_filter_deps="gpl"
3080 delogo_filter_deps="gpl"
3081 deshake_filter_select="pixelutils"
3082 drawtext_filter_deps="libfreetype"
3083 eq_filter_deps="gpl"
3084 fftfilt_filter_deps="avcodec"
3085 fftfilt_filter_select="rdft"
3086 find_rect_filter_deps="avcodec avformat gpl"
3087 firequalizer_filter_deps="avcodec"
3088 firequalizer_filter_select="rdft"
3089 flite_filter_deps="libflite"
3090 framerate_filter_select="pixelutils"
3091 frei0r_filter_deps="frei0r dlopen"
3092 frei0r_src_filter_deps="frei0r dlopen"
3093 fspp_filter_deps="gpl"
3094 geq_filter_deps="gpl"
3095 histeq_filter_deps="gpl"
3096 hqdn3d_filter_deps="gpl"
3097 interlace_filter_deps="gpl"
3098 kerndeint_filter_deps="gpl"
3099 ladspa_filter_deps="ladspa dlopen"
3100 mcdeint_filter_deps="avcodec gpl"
3101 movie_filter_deps="avcodec avformat"
3102 mpdecimate_filter_deps="gpl"
3103 mpdecimate_filter_select="pixelutils"
3104 mptestsrc_filter_deps="gpl"
3105 negate_filter_deps="lut_filter"
3106 nnedi_filter_deps="gpl"
3107 ocr_filter_deps="libtesseract"
3108 ocv_filter_deps="libopencv"
3109 owdenoise_filter_deps="gpl"
3110 pan_filter_deps="swresample"
3111 perspective_filter_deps="gpl"
3112 phase_filter_deps="gpl"
3113 pp7_filter_deps="gpl"
3114 pp_filter_deps="gpl postproc"
3115 pullup_filter_deps="gpl"
3116 removelogo_filter_deps="avcodec avformat swscale"
3117 repeatfields_filter_deps="gpl"
3118 resample_filter_deps="avresample"
3119 rubberband_filter_deps="librubberband"
3120 sab_filter_deps="gpl swscale"
3121 scale2ref_filter_deps="swscale"
3122 scale_filter_deps="swscale"
3123 select_filter_select="pixelutils"
3124 showcqt_filter_deps="avcodec avformat swscale"
3125 showcqt_filter_select="fft"
3126 showfreqs_filter_deps="avcodec"
3127 showfreqs_filter_select="fft"
3128 showspectrum_filter_deps="avcodec"
3129 showspectrum_filter_select="fft"
3130 showspectrumpic_filter_deps="avcodec"
3131 showspectrumpic_filter_select="fft"
3132 smartblur_filter_deps="gpl swscale"
3133 sofalizer_filter_deps="netcdf avcodec"
3134 sofalizer_filter_select="fft"
3135 spectrumsynth_filter_deps="avcodec"
3136 spectrumsynth_filter_select="fft"
3137 spp_filter_deps="gpl avcodec"
3138 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3139 stereo3d_filter_deps="gpl"
3140 subtitles_filter_deps="avformat avcodec libass"
3141 super2xsai_filter_deps="gpl"
3142 pixfmts_super2xsai_test_deps="super2xsai_filter"
3143 tinterlace_filter_deps="gpl"
3144 tinterlace_merge_test_deps="tinterlace_filter"
3145 tinterlace_pad_test_deps="tinterlace_filter"
3146 uspp_filter_deps="gpl avcodec"
3147 vaguedenoiser_filter_deps="gpl"
3148 vidstabdetect_filter_deps="libvidstab"
3149 vidstabtransform_filter_deps="libvidstab"
3150 zmq_filter_deps="libzmq"
3151 zoompan_filter_deps="swscale"
3152 zscale_filter_deps="libzimg"
3153 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3154
3155 # examples
3156 avio_dir_cmd_deps="avformat avutil"
3157 avio_reading_deps="avformat avcodec avutil"
3158 decoding_encoding_example_deps="avcodec avformat avutil"
3159 demuxing_decoding_example_deps="avcodec avformat avutil"
3160 extract_mvs_example_deps="avcodec avformat avutil"
3161 filter_audio_example_deps="avfilter avutil"
3162 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3163 filtering_video_example_deps="avfilter avcodec avformat avutil"
3164 http_multiclient_example_deps="avformat avutil fork"
3165 metadata_example_deps="avformat avutil"
3166 muxing_example_deps="avcodec avformat avutil swscale"
3167 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
3168 remuxing_example_deps="avcodec avformat avutil"
3169 resampling_audio_example_deps="avutil swresample"
3170 scaling_video_example_deps="avutil swscale"
3171 transcode_aac_example_deps="avcodec avformat swresample"
3172 transcoding_example_deps="avfilter avcodec avformat avutil"
3173
3174 # libraries, in linking order
3175 avcodec_deps="avutil"
3176 avdevice_deps="avformat avcodec avutil"
3177 avfilter_deps="avutil"
3178 avformat_deps="avcodec avutil"
3179 avresample_deps="avutil"
3180 postproc_deps="avutil gpl"
3181 swresample_deps="avutil"
3182 swscale_deps="avutil"
3183
3184 # programs
3185 ffmpeg_deps="avcodec avfilter avformat swresample"
3186 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3187                null_filter
3188                setpts_filter trim_filter"
3189 ffplay_deps="avcodec avformat swscale swresample sdl2"
3190 ffplay_libs='$sdl2_libs'
3191 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3192 ffprobe_deps="avcodec avformat"
3193 ffserver_deps="avformat fork sarestart"
3194 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3195
3196 # documentation
3197 podpages_deps="perl"
3198 manpages_deps="perl pod2man"
3199 htmlpages_deps="perl"
3200 htmlpages_deps_any="makeinfo_html texi2html"
3201 txtpages_deps="perl makeinfo"
3202 doc_deps_any="manpages htmlpages podpages txtpages"
3203
3204 # default parameters
3205
3206 logfile="config.log"
3207
3208 # installation paths
3209 prefix_default="/usr/local"
3210 bindir_default='${prefix}/bin'
3211 datadir_default='${prefix}/share/ffmpeg'
3212 docdir_default='${prefix}/share/doc/ffmpeg'
3213 incdir_default='${prefix}/include'
3214 libdir_default='${prefix}/lib'
3215 mandir_default='${prefix}/share/man'
3216
3217 # toolchain
3218 ar_default="ar"
3219 cc_default="gcc"
3220 cxx_default="g++"
3221 host_cc_default="gcc"
3222 cp_f="cp -f"
3223 doxygen_default="doxygen"
3224 install="install"
3225 ln_s_default="ln -s -f"
3226 nm_default="nm -g"
3227 objformat="elf"
3228 pkg_config_default=pkg-config
3229 ranlib_default="ranlib"
3230 strip_default="strip"
3231 version_script='--version-script'
3232 yasmexe_default="yasm"
3233 windres_default="windres"
3234
3235 # OS
3236 target_os_default=$(tolower $(uname -s))
3237 host_os=$target_os_default
3238
3239 # machine
3240 if test "$target_os_default" = aix; then
3241     arch_default=$(uname -p)
3242     strip_default="strip -X32_64"
3243 else
3244     arch_default=$(uname -m)
3245 fi
3246 cpu="generic"
3247 intrinsics="none"
3248
3249 # configurable options
3250 enable $PROGRAM_LIST
3251 enable $DOCUMENT_LIST
3252 enable $EXAMPLE_LIST
3253 enable $(filter_out avresample $LIBRARY_LIST)
3254 enable stripping
3255
3256 enable asm
3257 enable debug
3258 enable doc
3259 enable faan faandct faanidct
3260 enable optimizations
3261 enable runtime_cpudetect
3262 enable safe_bitstream_reader
3263 enable static
3264 enable swscale_alpha
3265 enable valgrind_backtrace
3266
3267 sws_max_filter_size_default=256
3268 set_default sws_max_filter_size
3269
3270 # build settings
3271 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3272 LIBPREF="lib"
3273 LIBSUF=".a"
3274 FULLNAME='$(NAME)$(BUILDSUF)'
3275 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3276 SLIBPREF="lib"
3277 SLIBSUF=".so"
3278 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3279 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3280 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3281 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3282 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3283 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3284 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3285
3286 asflags_filter=echo
3287 cflags_filter=echo
3288 ldflags_filter=echo
3289
3290 AS_C='-c'
3291 AS_O='-o $@'
3292 CC_C='-c'
3293 CC_E='-E -o $@'
3294 CC_O='-o $@'
3295 CXX_C='-c'
3296 CXX_O='-o $@'
3297 OBJCC_C='-c'
3298 OBJCC_E='-E -o $@'
3299 OBJCC_O='-o $@'
3300 LD_O='-o $@'
3301 LD_LIB='-l%'
3302 LD_PATH='-L'
3303 HOSTCC_C='-c'
3304 HOSTCC_E='-E -o $@'
3305 HOSTCC_O='-o $@'
3306 HOSTLD_O='-o $@'
3307
3308 host_libs='-lm'
3309 host_cflags_filter=echo
3310 host_ldflags_filter=echo
3311
3312 target_path='$(CURDIR)'
3313
3314 # since the object filename is not given with the -MM flag, the compiler
3315 # is only able to print the basename, and we must add the path ourselves
3316 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3317 DEPFLAGS='-MM'
3318
3319 # find source path
3320 if test -f configure; then
3321     source_path=.
3322 else
3323     source_path=$(cd $(dirname "$0"); pwd)
3324     case "$source_path" in
3325         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3326     esac
3327     test -e "$source_path/config.h" &&
3328         die "Out of tree builds are impossible with config.h in source dir."
3329 fi
3330
3331 for v in "$@"; do
3332     r=${v#*=}
3333     l=${v%"$r"}
3334     r=$(sh_quote "$r")
3335     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3336 done
3337
3338 find_things(){
3339     thing=$1
3340     pattern=$2
3341     file=$source_path/$3
3342     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3343 }
3344
3345 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3346 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3347 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3348 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3349 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3350 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3351 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3352 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3353 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3354
3355 find_things_extern(){
3356     thing=$1
3357     pattern=$2
3358     file=$source_path/$3
3359     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3360 }
3361
3362 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3363 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3364
3365 ALL_COMPONENTS="
3366     $BSF_LIST
3367     $DECODER_LIST
3368     $DEMUXER_LIST
3369     $ENCODER_LIST
3370     $FILTER_LIST
3371     $HWACCEL_LIST
3372     $INDEV_LIST
3373     $MUXER_LIST
3374     $OUTDEV_LIST
3375     $PARSER_LIST
3376     $PROTOCOL_LIST
3377 "
3378
3379 for n in $COMPONENT_LIST; do
3380     v=$(toupper ${n%s})_LIST
3381     eval enable \$$v
3382     eval ${n}_if_any="\$$v"
3383 done
3384
3385 enable $ARCH_EXT_LIST
3386
3387 die_unknown(){
3388     echo "Unknown option \"$1\"."
3389     echo "See $0 --help for available options."
3390     exit 1
3391 }
3392
3393 print_in_columns() {
3394     cols=$(expr $ncols / 24)
3395     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3396 }
3397
3398 show_list() {
3399     suffix=_$1
3400     shift
3401     echo $* | sed s/$suffix//g | print_in_columns
3402     exit 0
3403 }
3404
3405 rand_list(){
3406     IFS=', '
3407     set -- $*
3408     unset IFS
3409     for thing; do
3410         comp=${thing%:*}
3411         prob=${thing#$comp}
3412         prob=${prob#:}
3413         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3414         echo "prob ${prob:-0.5}"
3415         printf '%s\n' $comp
3416     done
3417 }
3418
3419 do_random(){
3420     action=$1
3421     shift
3422     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3423     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3424 }
3425
3426 for opt do
3427     optval="${opt#*=}"
3428     case "$opt" in
3429         --extra-ldflags=*)
3430             add_ldflags $optval
3431         ;;
3432         --extra-ldexeflags=*)
3433             add_ldexeflags $optval
3434         ;;
3435         --extra-ldlibflags=*)
3436             add_ldlibflags $optval
3437         ;;
3438         --extra-libs=*)
3439             add_extralibs $optval
3440         ;;
3441         --disable-devices)
3442             disable $INDEV_LIST $OUTDEV_LIST
3443         ;;
3444         --enable-debug=*)
3445             debuglevel="$optval"
3446         ;;
3447         --disable-programs)
3448             disable $PROGRAM_LIST
3449         ;;
3450         --disable-everything)
3451             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3452         ;;
3453         --disable-all)
3454             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3455             disable $LIBRARY_LIST $PROGRAM_LIST doc
3456             enable avutil
3457         ;;
3458         --enable-random|--disable-random)
3459             action=${opt%%-random}
3460             do_random ${action#--} $COMPONENT_LIST
3461         ;;
3462         --enable-random=*|--disable-random=*)
3463             action=${opt%%-random=*}
3464             do_random ${action#--} $optval
3465         ;;
3466         --enable-*=*|--disable-*=*)
3467             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3468             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3469             eval list=\$$(toupper $thing)_LIST
3470             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3471             list=$(filter "$name" $list)
3472             [ "$list" = "" ] && warn "Option $opt did not match anything"
3473             $action $list
3474         ;;
3475         --enable-?*|--disable-?*)
3476             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3477             if is_in $option $COMPONENT_LIST; then
3478                 test $action = disable && action=unset
3479                 eval $action \$$(toupper ${option%s})_LIST
3480             elif is_in $option $CMDLINE_SELECT; then
3481                 $action $option
3482             else
3483                 die_unknown $opt
3484             fi
3485         ;;
3486         --list-*)
3487             NAME="${opt#--list-}"
3488             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3489             NAME=${NAME%s}
3490             eval show_list $NAME \$$(toupper $NAME)_LIST
3491         ;;
3492         --help|-h) show_help
3493         ;;
3494         --fatal-warnings) enable fatal_warnings
3495         ;;
3496         *)
3497             optname="${opt%%=*}"
3498             optname="${optname#--}"
3499             optname=$(echo "$optname" | sed 's/-/_/g')
3500             if is_in $optname $CMDLINE_SET; then
3501                 eval $optname='$optval'
3502             elif is_in $optname $CMDLINE_APPEND; then
3503                 append $optname "$optval"
3504             else
3505                 die_unknown $opt
3506             fi
3507         ;;
3508     esac
3509 done
3510
3511 for e in $env; do
3512     eval "export $e"
3513 done
3514
3515 # Mark specifically enabled, but normally autodetected libraries as requested.
3516 for lib in $AUTODETECT_LIBS; do
3517     enabled $lib && request $lib
3518 done
3519
3520 # Enable platform codecs by default.
3521 enable_weak audiotoolbox
3522
3523 # Enable hwaccels by default.
3524 enable_weak d3d11va dxva2 vaapi vda vdpau videotoolbox_hwaccel xvmc
3525 enable_weak xlib
3526
3527 enable_weak cuda cuvid nvenc vda_framework videotoolbox videotoolbox_encoder
3528
3529 disabled logging && logfile=/dev/null
3530
3531 # Disable all the library-specific components if the library itself
3532 # is disabled, see AVCODEC_LIST and following _LIST variables.
3533
3534 disable_components(){
3535     disabled ${1} && disable $(
3536         eval components="\$$(toupper ${1})_COMPONENTS"
3537         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3538     )
3539 }
3540
3541 map 'disable_components $v' $LIBRARY_LIST
3542
3543 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3544 set >> $logfile
3545
3546 test -n "$valgrind" && toolchain="valgrind-memcheck"
3547
3548 case "$toolchain" in
3549     *-asan)
3550         cc_default="${toolchain%-asan}"
3551         add_cflags  -fsanitize=address
3552         add_ldflags -fsanitize=address
3553     ;;
3554     *-msan)
3555         cc_default="${toolchain%-msan}"
3556         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3557         add_ldflags -fsanitize=memory
3558     ;;
3559     *-tsan)
3560         cc_default="${toolchain%-tsan}"
3561         add_cflags  -fsanitize=thread -fPIE
3562         add_ldflags -fsanitize=thread -pie
3563         case "$toolchain" in
3564             gcc-tsan)
3565                 add_cflags  -fPIC
3566                 add_ldflags -fPIC
3567                 ;;
3568         esac
3569     ;;
3570     *-usan)
3571         cc_default="${toolchain%-usan}"
3572         add_cflags  -fsanitize=undefined
3573         add_ldflags -fsanitize=undefined
3574     ;;
3575     valgrind-*)
3576         target_exec_default="valgrind"
3577         case "$toolchain" in
3578             valgrind-massif)
3579                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3580                 ;;
3581             valgrind-memcheck)
3582                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3583                 ;;
3584         esac
3585     ;;
3586     msvc)
3587         # Check whether the current MSVC version needs the C99 converter.
3588         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3589         # support enough of C99 to build ffmpeg. Default to the new
3590         # behaviour if the regexp was unable to match anything, since this
3591         # successfully parses the version number of existing supported
3592         # versions that require the converter (MSVC 2010 and 2012).
3593         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3594         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3595             cc_default="cl"
3596         else
3597             cc_default="c99wrap cl"
3598         fi
3599         ld_default="$source_path/compat/windows/mslink"
3600         nm_default="dumpbin -symbols"
3601         ar_default="lib"
3602         case "$arch" in
3603         arm*)
3604             as_default="armasm"
3605             ;;
3606         esac
3607         target_os_default="win32"
3608         # Use a relative path for TMPDIR. This makes sure all the
3609         # ffconf temp files are written with a relative path, avoiding
3610         # issues with msys/win32 path conversion for MSVC parameters
3611         # such as -Fo<file> or -out:<file>.
3612         TMPDIR=.
3613     ;;
3614     icl)
3615         cc_default="icl"
3616         ld_default="xilink"
3617         nm_default="dumpbin -symbols"
3618         ar_default="xilib"
3619         target_os_default="win32"
3620         TMPDIR=.
3621     ;;
3622     gcov)
3623         add_cflags  -fprofile-arcs -ftest-coverage
3624         add_ldflags -fprofile-arcs -ftest-coverage
3625     ;;
3626     llvm-cov)
3627         add_cflags -fprofile-arcs -ftest-coverage
3628         add_ldflags --coverage
3629     ;;
3630     hardened)
3631         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3632         add_cflags   -fno-strict-overflow -fstack-protector-all
3633         add_ldflags  -Wl,-z,relro -Wl,-z,now
3634         add_cflags   -fPIE
3635         add_ldexeflags -fPIE -pie
3636     ;;
3637     ?*)
3638         die "Unknown toolchain $toolchain"
3639     ;;
3640 esac
3641
3642 test -n "$cross_prefix" && enable cross_compile
3643
3644 if enabled cross_compile; then
3645     test -n "$arch" && test -n "$target_os" ||
3646         die "Must specify target arch and OS when cross-compiling"
3647 fi
3648
3649 ar_default="${cross_prefix}${ar_default}"
3650 cc_default="${cross_prefix}${cc_default}"
3651 cxx_default="${cross_prefix}${cxx_default}"
3652 nm_default="${cross_prefix}${nm_default}"
3653 pkg_config_default="${cross_prefix}${pkg_config_default}"
3654 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3655     ranlib_default="${cross_prefix}${ranlib_default} -D"
3656 else
3657     ranlib_default="${cross_prefix}${ranlib_default}"
3658 fi
3659 strip_default="${cross_prefix}${strip_default}"
3660 windres_default="${cross_prefix}${windres_default}"
3661
3662 sysinclude_default="${sysroot}/usr/include"
3663
3664 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3665     target_exec target_os yasmexe
3666 enabled cross_compile || host_cc_default=$cc
3667 set_default host_cc
3668
3669 pkg_config_fail_message=""
3670 if ! $pkg_config --version >/dev/null 2>&1; then
3671     warn "$pkg_config not found, library detection may fail."
3672     pkg_config=false
3673 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3674     pkg_config_fail_message="
3675 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3676 fi
3677
3678 if test $doxygen != $doxygen_default && \
3679   ! $doxygen --version >/dev/null 2>&1; then
3680     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3681 fi
3682
3683 exesuf() {
3684     case $1 in
3685         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3686     esac
3687 }
3688
3689 EXESUF=$(exesuf $target_os)
3690 HOSTEXESUF=$(exesuf $host_os)
3691
3692 # set temporary file name
3693 : ${TMPDIR:=$TEMPDIR}
3694 : ${TMPDIR:=$TMP}
3695 : ${TMPDIR:=/tmp}
3696
3697 if [ -n "$tempprefix" ] ; then
3698     mktemp(){
3699         echo $tempprefix.${HOSTNAME}.${UID}
3700     }
3701 elif ! check_cmd mktemp -u XXXXXX; then
3702     # simple replacement for missing mktemp
3703     # NOT SAFE FOR GENERAL USE
3704     mktemp(){
3705         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3706     }
3707 fi
3708
3709 tmpfile(){
3710     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3711         (set -C; exec > $tmp) 2>/dev/null ||
3712         die "Unable to create temporary file in $TMPDIR."
3713     append TMPFILES $tmp
3714     eval $1=$tmp
3715 }
3716
3717 trap 'rm -f -- $TMPFILES' EXIT
3718
3719 tmpfile TMPASM .asm
3720 tmpfile TMPC   .c
3721 tmpfile TMPCPP .cpp
3722 tmpfile TMPE   $EXESUF
3723 tmpfile TMPH   .h
3724 tmpfile TMPM   .m
3725 tmpfile TMPO   .o
3726 tmpfile TMPS   .S
3727 tmpfile TMPSH  .sh
3728 tmpfile TMPV   .ver
3729
3730 unset -f mktemp
3731
3732 chmod +x $TMPE
3733
3734 # make sure we can execute files in $TMPDIR
3735 cat > $TMPSH 2>> $logfile <<EOF
3736 #! /bin/sh
3737 EOF
3738 chmod +x $TMPSH >> $logfile 2>&1
3739 if ! $TMPSH >> $logfile 2>&1; then
3740     cat <<EOF
3741 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3742 variable to another directory and make sure that it is not mounted noexec.
3743 EOF
3744     die "Sanity test failed."
3745 fi
3746
3747 armasm_flags(){
3748     for flag; do
3749         case $flag in
3750             # Filter out MSVC cl.exe options from cflags that shouldn't
3751             # be passed to gas-preprocessor
3752             -M[TD]*)                                            ;;
3753             *)                  echo $flag                      ;;
3754         esac
3755    done
3756 }
3757
3758 ccc_flags(){
3759     for flag; do
3760         case $flag in
3761             -std=c99)           echo -c99                       ;;
3762             -mcpu=*)            echo -arch ${flag#*=}           ;;
3763             -mieee)             echo -ieee                      ;;
3764             -O*|-fast)          echo $flag                      ;;
3765             -fno-math-errno)    echo -assume nomath_errno       ;;
3766             -g)                 echo -g3                        ;;
3767             -Wall)              echo -msg_enable level2         ;;
3768             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3769             -Wl,*)              echo $flag                      ;;
3770             -f*|-W*)                                            ;;
3771             *)                  echo $flag                      ;;
3772         esac
3773    done
3774 }
3775
3776 cparser_flags(){
3777     for flag; do
3778         case $flag in
3779             -Wno-switch)             echo -Wno-switch-enum ;;
3780             -Wno-format-zero-length) ;;
3781             -Wdisabled-optimization) ;;
3782             -Wno-pointer-sign)       echo -Wno-other ;;
3783             *)                       echo $flag ;;
3784         esac
3785     done
3786 }
3787
3788 msvc_common_flags(){
3789     for flag; do
3790         case $flag in
3791             # In addition to specifying certain flags under the compiler
3792             # specific filters, they must be specified here as well or else the
3793             # generic catch all at the bottom will print the original flag.
3794             -Wall)                ;;
3795             -std=c99)             ;;
3796             # Common flags
3797             -fomit-frame-pointer) ;;
3798             -g)                   echo -Z7 ;;
3799             -fno-math-errno)      ;;
3800             -fno-common)          ;;
3801             -fno-signed-zeros)    ;;
3802             -fPIC)                ;;
3803             -mthumb)              ;;
3804             -march=*)             ;;
3805             -lz)                  echo zlib.lib ;;
3806             -lavifil32)           echo vfw32.lib ;;
3807             -lavicap32)           echo vfw32.lib user32.lib ;;
3808             -lx264)               echo libx264.lib ;;
3809             -l*)                  echo ${flag#-l}.lib ;;
3810             -LARGEADDRESSAWARE)   echo $flag ;;
3811             -L*)                  echo -libpath:${flag#-L} ;;
3812             *)                    echo $flag ;;
3813         esac
3814     done
3815 }
3816
3817 msvc_flags(){
3818     msvc_common_flags "$@"
3819     for flag; do
3820         case $flag in
3821             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3822                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3823                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3824                                        -wd4307 \
3825                                        -wd4273 -wd4554 -wd4701 ;;
3826         esac
3827     done
3828 }
3829
3830 icl_flags(){
3831     msvc_common_flags "$@"
3832     for flag; do
3833         case $flag in
3834             # Despite what Intel's documentation says -Wall, which is supported
3835             # on Windows, does enable remarks so disable them here.
3836             -Wall)                echo $flag -Qdiag-disable:remark ;;
3837             -std=c99)             echo -Qstd=c99 ;;
3838             -flto)                echo -ipo ;;
3839         esac
3840     done
3841 }
3842
3843 icc_flags(){
3844     for flag; do
3845         case $flag in
3846             -flto)                echo -ipo ;;
3847             *)                    echo $flag ;;
3848         esac
3849     done
3850 }
3851
3852 pgi_flags(){
3853     for flag; do
3854         case $flag in
3855             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3856             -fomit-frame-pointer) echo -Mnoframe ;;
3857             -g)                   echo -gopt ;;
3858             *)                    echo $flag ;;
3859         esac
3860     done
3861 }
3862
3863 suncc_flags(){
3864     for flag; do
3865         case $flag in
3866             -march=*|-mcpu=*)
3867                 case "${flag#*=}" in
3868                     native)                   echo -xtarget=native       ;;
3869                     v9|niagara)               echo -xarch=sparc          ;;
3870                     ultrasparc)               echo -xarch=sparcvis       ;;
3871                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3872                     i586|pentium)             echo -xchip=pentium        ;;
3873                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3874                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3875                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3876                     pentium4*)          echo -xtarget=pentium4           ;;
3877                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3878                     *-sse3)             echo -xarch=sse3                 ;;
3879                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3880                     bonnell)                   echo -xarch=ssse3         ;;
3881                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3882                     westmere)                  echo -xtarget=westmere    ;;
3883                     silvermont)                echo -xarch=sse4_2        ;;
3884                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3885                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
3886                                                echo -xarch=avx           ;;
3887                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3888                     btver1)                    echo -xarch=amdsse4a      ;;
3889                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
3890                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3891                     k8|opteron|athlon64|athlon-fx)
3892                                                echo -xarch=sse2a         ;;
3893                     athlon*)                   echo -xarch=pentium_proa  ;;
3894                 esac
3895                 ;;
3896             -std=c99)             echo -xc99              ;;
3897             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3898             -fPIC)                echo -KPIC -xcode=pic32 ;;
3899             -W*,*)                echo $flag              ;;
3900             -f*-*|-W*|-mimpure-text)                      ;;
3901             -shared)              echo -G                 ;;
3902             *)                    echo $flag              ;;
3903         esac
3904     done
3905 }
3906
3907 tms470_flags(){
3908     for flag; do
3909         case $flag in
3910             -march=*|-mcpu=*)
3911                 case "${flag#*=}" in
3912                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3913                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3914                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3915                     armv6*|arm11*)          echo -mv=6   ;;
3916                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3917                                             echo -mv=5e  ;;
3918                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3919                 esac
3920                 ;;
3921             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3922             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3923             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3924             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3925             -msoft-float)   echo --float_support=vfplib       ;;
3926             -O[0-3]|-mf=*)  echo $flag                        ;;
3927             -g)             echo -g -mn                       ;;
3928             -pds=*)         echo $flag                        ;;
3929             -D*|-I*)        echo $flag                        ;;
3930             --gcc|--abi=*)  echo $flag                        ;;
3931             -me)            echo $flag                        ;;
3932         esac
3933     done
3934 }
3935
3936 probe_cc(){
3937     pfx=$1
3938     _cc=$2
3939     first=$3
3940
3941     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3942     unset _ld_o _ldflags _ld_lib _ld_path
3943     unset _depflags _DEPCMD _DEPFLAGS
3944     _flags_filter=echo
3945
3946     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3947         true # no-op to avoid reading stdin in following checks
3948     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3949         _type=llvm_gcc
3950         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3951         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3952         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3953         _cflags_speed='-O3'
3954         _cflags_size='-Os'
3955     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3956         _type=gcc
3957         gcc_version=$($_cc --version | head -n1)
3958         gcc_basever=$($_cc -dumpversion)
3959         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3960         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3961         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3962         case $gcc_basever in
3963             2) ;;
3964             2.*) ;;
3965             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
3966         esac
3967         if [ "$first" = true ]; then
3968             case $gcc_basever in
3969                 4.2*)
3970                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
3971             esac
3972         fi
3973         _cflags_speed='-O3'
3974         _cflags_size='-Os'
3975     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3976         _type=icc
3977         _ident=$($_cc --version | head -n1)
3978         _depflags='-MMD'
3979         _cflags_speed='-O3'
3980         _cflags_size='-Os'
3981         _cflags_noopt='-O1'
3982         _flags_filter=icc_flags
3983     elif $_cc -v 2>&1 | grep -q xlc; then
3984         _type=xlc
3985         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3986         _cflags_speed='-O5'
3987         _cflags_size='-O5 -qcompact'
3988     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3989         _type=ccc
3990         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3991         _DEPFLAGS='-M'
3992         _cflags_speed='-fast'
3993         _cflags_size='-O1'
3994         _flags_filter=ccc_flags
3995     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3996         test -d "$sysroot" || die "No valid sysroot specified."
3997         _type=armcc
3998         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3999         armcc_conf="$PWD/armcc.conf"
4000         $_cc --arm_linux_configure                 \
4001              --arm_linux_config_file="$armcc_conf" \
4002              --configure_sysroot="$sysroot"        \
4003              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4004              die "Error creating armcc configuration file."
4005         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4006         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4007         as_default="${cross_prefix}gcc"
4008         _depflags='-MMD'
4009         _cflags_speed='-O3'
4010         _cflags_size='-Os'
4011     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
4012         _type=tms470
4013         _ident=$($_cc -version | head -n1 | tr -s ' ')
4014         _flags='--gcc --abi=eabi -me'
4015         _cc_e='-ppl -fe=$@'
4016         _cc_o='-fe=$@'
4017         _depflags='-ppa -ppd=$(@:.o=.d)'
4018         _cflags_speed='-O3 -mf=5'
4019         _cflags_size='-O3 -mf=2'
4020         _flags_filter=tms470_flags
4021     elif $_cc -v 2>&1 | grep -q clang; then
4022         _type=clang
4023         _ident=$($_cc --version 2>/dev/null | head -n1)
4024         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4025         _cflags_speed='-O3'
4026         _cflags_size='-Os'
4027     elif $_cc -V 2>&1 | grep -q Sun; then
4028         _type=suncc
4029         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4030         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4031         _DEPFLAGS='-xM1 -xc99'
4032         _ldflags='-std=c99'
4033         _cflags_speed='-O5'
4034         _cflags_size='-O5 -xspace'
4035         _flags_filter=suncc_flags
4036     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4037         _type=pathscale
4038         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4039         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4040         _cflags_speed='-O2'
4041         _cflags_size='-Os'
4042         _flags_filter='filter_out -Wdisabled-optimization'
4043     elif $_cc -v 2>&1 | grep -q Open64; then
4044         _type=open64
4045         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4046         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4047         _cflags_speed='-O2'
4048         _cflags_size='-Os'
4049         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4050     elif $_cc -V 2>&1 | grep -q Portland; then
4051         _type=pgi
4052         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
4053         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
4054         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
4055         _cflags_size="-O2 -Munroll=c:1 $opt_common"
4056         _cflags_noopt="-O"
4057         _flags_filter=pgi_flags
4058     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4059         _type=armasm
4060         _ident=$($_cc | head -n1)
4061         # 4509: "This form of conditional instruction is deprecated"
4062         _flags="-nologo -ignore 4509"
4063         _flags_filter=armasm_flags
4064     elif $_cc 2>&1 | grep -q Intel; then
4065         _type=icl
4066         _ident=$($_cc 2>&1 | head -n1)
4067         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4068         # Not only is O3 broken on 13.x+ but it is slower on all previous
4069         # versions (tested) as well.
4070         _cflags_speed="-O2"
4071         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4072         if $_cc 2>&1 | grep -q Linker; then
4073             _ld_o='-out:$@'
4074         else
4075             _ld_o='-Fe$@'
4076         fi
4077         _cc_o='-Fo$@'
4078         _cc_e='-P'
4079         _flags_filter=icl_flags
4080         _ld_lib='lib%.a'
4081         _ld_path='-libpath:'
4082         # -Qdiag-error to make icl error when seeing certain unknown arguments
4083         _flags='-nologo -Qdiag-error:4044,10157'
4084         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4085         # with MSVC which enables it by default.
4086         _cflags='-D_USE_MATH_DEFINES -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4087         disable stripping
4088     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4089         _type=msvc
4090         _ident=$($_cc 2>&1 | head -n1)
4091         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4092         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4093         _cflags_speed="-O2"
4094         _cflags_size="-O1"
4095         if $_cc -nologo- 2>&1 | grep -q Linker; then
4096             _ld_o='-out:$@'
4097         else
4098             _ld_o='-Fe$@'
4099         fi
4100         _cc_o='-Fo$@'
4101         _cc_e='-P -Fi$@'
4102         _flags_filter=msvc_flags
4103         _ld_lib='lib%.a'
4104         _ld_path='-libpath:'
4105         _flags='-nologo'
4106         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS'
4107         disable stripping
4108     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4109         _type=cparser
4110         _ident=$($_cc --version | head -n1)
4111         _depflags='-MMD'
4112         _cflags_speed='-O4'
4113         _cflags_size='-O2'
4114         _flags_filter=cparser_flags
4115     fi
4116
4117     eval ${pfx}_type=\$_type
4118     eval ${pfx}_ident=\$_ident
4119 }
4120
4121 set_ccvars(){
4122     eval ${1}_C=\${_cc_c-\${${1}_C}}
4123     eval ${1}_E=\${_cc_e-\${${1}_E}}
4124     eval ${1}_O=\${_cc_o-\${${1}_O}}
4125
4126     if [ -n "$_depflags" ]; then
4127         eval ${1}_DEPFLAGS=\$_depflags
4128     else
4129         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4130         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4131         eval DEP${1}FLAGS=\$_flags
4132     fi
4133 }
4134
4135 probe_cc cc "$cc" "true"
4136 cflags_filter=$_flags_filter
4137 cflags_speed=$_cflags_speed
4138 cflags_size=$_cflags_size
4139 cflags_noopt=$_cflags_noopt
4140 add_cflags $_flags $_cflags
4141 cc_ldflags=$_ldflags
4142 set_ccvars CC
4143
4144 probe_cc hostcc "$host_cc"
4145 host_cflags_filter=$_flags_filter
4146 add_host_cflags  $_flags $_cflags
4147 set_ccvars HOSTCC
4148
4149 test -n "$cc_type" && enable $cc_type ||
4150     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4151
4152 : ${as_default:=$cc}
4153 : ${objcc_default:=$cc}
4154 : ${dep_cc_default:=$cc}
4155 : ${ld_default:=$cc}
4156 : ${host_ld_default:=$host_cc}
4157 set_default ar as objcc dep_cc ld ln_s host_ld windres
4158
4159 probe_cc as "$as"
4160 asflags_filter=$_flags_filter
4161 add_asflags $_flags $_cflags
4162 set_ccvars AS
4163
4164 probe_cc objcc "$objcc"
4165 objcflags_filter=$_flags_filter
4166 add_objcflags $_flags $_cflags
4167 set_ccvars OBJC
4168
4169 probe_cc ld "$ld"
4170 ldflags_filter=$_flags_filter
4171 add_ldflags $_flags $_ldflags
4172 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4173 LD_O=${_ld_o-$LD_O}
4174 LD_LIB=${_ld_lib-$LD_LIB}
4175 LD_PATH=${_ld_path-$LD_PATH}
4176
4177 probe_cc hostld "$host_ld"
4178 host_ldflags_filter=$_flags_filter
4179 add_host_ldflags $_flags $_ldflags
4180 HOSTLD_O=${_ld_o-$HOSTLD_O}
4181
4182 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4183     probe_cc depcc "$dep_cc"
4184     CCDEP=${_DEPCMD:-$DEPCMD}
4185     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4186     DEPCCFLAGS=$_flags
4187 fi
4188
4189 if $ar 2>&1 | grep -q Microsoft; then
4190     arflags="-nologo"
4191     ar_o='-out:$@'
4192 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
4193     arflags="rq"
4194     ar_o='$@'
4195 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
4196     arflags='-Xany -r -c'
4197     ar_o='$@'
4198 elif $ar 2>&1 | grep -q "\[D\] "; then
4199     arflags="rcD"
4200     ar_o='$@'
4201 else
4202     arflags="rc"
4203     ar_o='$@'
4204 fi
4205
4206 add_cflags $extra_cflags
4207 add_cxxflags $extra_cxxflags
4208 add_objcflags $extra_objcflags
4209 add_asflags $extra_cflags
4210
4211 if test -n "$sysroot"; then
4212     case "$cc_type" in
4213         gcc|llvm_gcc|clang)
4214             add_cppflags --sysroot="$sysroot"
4215             add_ldflags --sysroot="$sysroot"
4216 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
4217             add_cppflags -isysroot "$sysroot"
4218             add_ldflags -isysroot "$sysroot"
4219         ;;
4220         tms470)
4221             add_cppflags -I"$sysinclude"
4222             add_ldflags  --sysroot="$sysroot"
4223         ;;
4224     esac
4225 fi
4226
4227 if test "$cpu" = host; then
4228     enabled cross_compile &&
4229         die "--cpu=host makes no sense when cross-compiling."
4230
4231     case "$cc_type" in
4232         gcc|llvm_gcc)
4233             check_native(){
4234                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4235                 sed -n "/cc1.*$1=/{
4236                             s/.*$1=\\([^ ]*\\).*/\\1/
4237                             p
4238                             q
4239                         }" $TMPE
4240             }
4241             cpu=$(check_native -march || check_native -mcpu)
4242         ;;
4243         clang)
4244             check_native(){
4245                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4246                 sed -n "/cc1.*-target-cpu /{
4247                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4248                             p
4249                             q
4250                         }" $TMPE
4251             }
4252             cpu=$(check_native -march)
4253         ;;
4254     esac
4255
4256     test "${cpu:-host}" = host &&
4257         die "--cpu=host not supported with compiler $cc"
4258 fi
4259
4260 # Deal with common $arch aliases
4261 case "$arch" in
4262     aarch64|arm64)
4263         arch="aarch64"
4264     ;;
4265     arm*|iPad*|iPhone*)
4266         arch="arm"
4267     ;;
4268     mips*|IP*)
4269         case "$arch" in
4270         *el)
4271             add_cppflags -EL
4272             add_ldflags -EL
4273         ;;
4274         *eb)
4275             add_cppflags -EB
4276             add_ldflags -EB
4277         ;;
4278         esac
4279         arch="mips"
4280     ;;
4281     parisc*|hppa*)
4282         arch="parisc"
4283     ;;
4284     "Power Macintosh"|ppc*|powerpc*)
4285         arch="ppc"
4286     ;;
4287     s390|s390x)
4288         arch="s390"
4289     ;;
4290     sh4|sh)
4291         arch="sh4"
4292     ;;
4293     sun4*|sparc*)
4294         arch="sparc"
4295     ;;
4296     tilegx|tile-gx)
4297         arch="tilegx"
4298     ;;
4299     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4300         arch="x86"
4301     ;;
4302 esac
4303
4304 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4305 enable $arch
4306
4307 # Add processor-specific flags
4308 if enabled aarch64; then
4309
4310     case $cpu in
4311         armv*)
4312             cpuflags="-march=$cpu"
4313         ;;
4314         *)
4315             cpuflags="-mcpu=$cpu"
4316         ;;
4317     esac
4318
4319 elif enabled alpha; then
4320
4321     cpuflags="-mcpu=$cpu"
4322
4323 elif enabled arm; then
4324
4325     check_arm_arch() {
4326         check_cpp_condition stddef.h \
4327             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4328             $cpuflags
4329     }
4330
4331     probe_arm_arch() {
4332         if   check_arm_arch 4;        then echo armv4
4333         elif check_arm_arch 4T;       then echo armv4t
4334         elif check_arm_arch 5;        then echo armv5
4335         elif check_arm_arch 5E;       then echo armv5e
4336         elif check_arm_arch 5T;       then echo armv5t
4337         elif check_arm_arch 5TE;      then echo armv5te
4338         elif check_arm_arch 5TEJ;     then echo armv5te
4339         elif check_arm_arch 6;        then echo armv6
4340         elif check_arm_arch 6J;       then echo armv6j
4341         elif check_arm_arch 6K;       then echo armv6k
4342         elif check_arm_arch 6Z;       then echo armv6z
4343         elif check_arm_arch 6ZK;      then echo armv6zk
4344         elif check_arm_arch 6T2;      then echo armv6t2
4345         elif check_arm_arch 7;        then echo armv7
4346         elif check_arm_arch 7A  7_A;  then echo armv7-a
4347         elif check_arm_arch 7S;       then echo armv7-a
4348         elif check_arm_arch 7R  7_R;  then echo armv7-r
4349         elif check_arm_arch 7M  7_M;  then echo armv7-m
4350         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4351         elif check_arm_arch 8A  8_A;  then echo armv8-a
4352         fi
4353     }
4354
4355     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4356
4357     case $cpu in
4358         armv*)
4359             cpuflags="-march=$cpu"
4360             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4361         ;;
4362         *)
4363             cpuflags="-mcpu=$cpu"
4364             case $cpu in
4365                 cortex-a*)                               subarch=armv7a  ;;
4366                 cortex-r*)                               subarch=armv7r  ;;
4367                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4368                 arm11*)                                  subarch=armv6   ;;
4369                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4370                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4371                 *)                             subarch=$(probe_arm_arch) ;;
4372             esac
4373         ;;
4374     esac
4375
4376     case "$subarch" in
4377         armv5t*)    enable fast_clz                ;;
4378         armv[6-8]*)
4379             enable fast_clz
4380             disabled fast_unaligned || enable fast_unaligned
4381             ;;
4382     esac
4383
4384 elif enabled avr32; then
4385
4386     case $cpu in
4387         ap7[02]0[0-2])
4388             subarch="avr32_ap"
4389             cpuflags="-mpart=$cpu"
4390         ;;
4391         ap)
4392             subarch="avr32_ap"
4393             cpuflags="-march=$cpu"
4394         ;;
4395         uc3[ab]*)
4396             subarch="avr32_uc"
4397             cpuflags="-mcpu=$cpu"
4398         ;;
4399         uc)
4400             subarch="avr32_uc"
4401             cpuflags="-march=$cpu"
4402         ;;
4403     esac
4404
4405 elif enabled bfin; then
4406
4407     cpuflags="-mcpu=$cpu"
4408
4409 elif enabled mips; then
4410
4411     cpuflags="-march=$cpu"
4412
4413     if [ "$cpu" != "generic" ]; then
4414         disable mips32r2
4415         disable mips32r5
4416         disable mips64r2
4417         disable mips32r6
4418         disable mips64r6
4419         disable loongson2
4420         disable loongson3
4421
4422         case $cpu in
4423             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4424                 enable mips32r2
4425                 disable msa
4426             ;;
4427             p5600|i6400|p6600)
4428                 disable mipsdsp
4429                 disable mipsdspr2
4430             ;;
4431             loongson*)
4432                 enable loongson2
4433                 enable loongson3
4434                 enable local_aligned_8 local_aligned_16 local_aligned_32
4435                 enable simd_align_16
4436                 enable fast_64bit
4437                 enable fast_clz
4438                 enable fast_cmov
4439                 enable fast_unaligned
4440                 disable aligned_stack
4441                 disable mipsfpu
4442                 disable mipsdsp
4443                 disable mipsdspr2
4444                 case $cpu in
4445                     loongson3*)
4446                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4447                     ;;
4448                     loongson2e)
4449                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4450                     ;;
4451                     loongson2f)
4452                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4453                     ;;
4454                 esac
4455             ;;
4456             *)
4457                 # Unknown CPU. Disable everything.
4458                 warn "unknown CPU. Disabling all MIPS optimizations."
4459                 disable mipsfpu
4460                 disable mipsdsp
4461                 disable mipsdspr2
4462                 disable msa
4463                 disable mmi
4464             ;;
4465         esac
4466
4467         case $cpu in
4468             24kc)
4469                 disable mipsfpu
4470                 disable mipsdsp
4471                 disable mipsdspr2
4472             ;;
4473             24kf*)
4474                 disable mipsdsp
4475                 disable mipsdspr2
4476             ;;
4477             24kec|34kc|1004kc)
4478                 disable mipsfpu
4479                 disable mipsdspr2
4480             ;;
4481             24kef*|34kf*|1004kf*)
4482                 disable mipsdspr2
4483             ;;
4484             74kc)
4485                 disable mipsfpu
4486             ;;
4487             p5600)
4488                 enable mips32r5
4489                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4490             ;;
4491             i6400)
4492                 enable mips64r6
4493                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4494             ;;
4495             p6600)
4496                 enable mips64r6
4497                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4498             ;;
4499         esac
4500     else
4501         # We do not disable anything. Is up to the user to disable the unwanted features.
4502         warn 'generic cpu selected'
4503     fi
4504
4505 elif enabled ppc; then
4506
4507     disable ldbrx
4508
4509     case $(tolower $cpu) in
4510         601|ppc601|powerpc601)
4511             cpuflags="-mcpu=601"
4512             disable altivec
4513         ;;
4514         603*|ppc603*|powerpc603*)
4515             cpuflags="-mcpu=603"
4516             disable altivec
4517         ;;
4518         604*|ppc604*|powerpc604*)
4519             cpuflags="-mcpu=604"
4520             disable altivec
4521         ;;
4522         g3|75*|ppc75*|powerpc75*)
4523             cpuflags="-mcpu=750"
4524             disable altivec
4525         ;;
4526         g4|745*|ppc745*|powerpc745*)
4527             cpuflags="-mcpu=7450"
4528             disable vsx
4529         ;;
4530         74*|ppc74*|powerpc74*)
4531             cpuflags="-mcpu=7400"
4532             disable vsx
4533         ;;
4534         g5|970|ppc970|powerpc970)
4535             cpuflags="-mcpu=970"
4536             disable vsx
4537         ;;
4538         power[3-6]*)
4539             cpuflags="-mcpu=$cpu"
4540             disable vsx
4541         ;;
4542         power[7-8]*)
4543             cpuflags="-mcpu=$cpu"
4544         ;;
4545         cell)
4546             cpuflags="-mcpu=cell"
4547             enable ldbrx
4548             disable vsx
4549         ;;
4550         e500mc)
4551             cpuflags="-mcpu=e500mc"
4552             disable altivec
4553         ;;
4554         e500v2)
4555             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4556             disable altivec
4557             disable dcbzl
4558         ;;
4559         e500)
4560             cpuflags="-mcpu=8540 -mhard-float"
4561             disable altivec
4562             disable dcbzl
4563         ;;
4564     esac
4565
4566 elif enabled sparc; then
4567
4568     case $cpu in
4569         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4570             cpuflags="-mcpu=$cpu"
4571         ;;
4572         ultrasparc*|niagara[234])
4573             cpuflags="-mcpu=$cpu"
4574         ;;
4575     esac
4576
4577 elif enabled x86; then
4578
4579     case $cpu in
4580         i[345]86|pentium)
4581             cpuflags="-march=$cpu"
4582             disable i686
4583             disable mmx
4584         ;;
4585         # targets that do NOT support nopl and conditional mov (cmov)
4586         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4587             cpuflags="-march=$cpu"
4588             disable i686
4589         ;;
4590         # targets that do support nopl and conditional mov (cmov)
4591         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4592         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4593         |amdfam10|barcelona|b[dt]ver*|znver*)
4594             cpuflags="-march=$cpu"
4595             enable i686
4596             enable fast_cmov
4597         ;;
4598         # targets that do support conditional mov but on which it's slow
4599         pentium4|pentium4m|prescott|nocona)
4600             cpuflags="-march=$cpu"
4601             enable i686
4602             disable fast_cmov
4603         ;;
4604     esac
4605
4606 fi
4607
4608 if [ "$cpu" != generic ]; then
4609     add_cflags  $cpuflags
4610     add_asflags $cpuflags
4611     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4612 fi
4613
4614 # compiler sanity check
4615 check_exec <<EOF
4616 int main(void){ return 0; }
4617 EOF
4618 if test "$?" != 0; then
4619     echo "$cc is unable to create an executable file."
4620     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4621         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4622         echo "Only do this if you know what cross compiling means."
4623     fi
4624     die "C compiler test failed."
4625 fi
4626
4627 add_cppflags -D_ISOC99_SOURCE
4628 add_cxxflags -D__STDC_CONSTANT_MACROS
4629 add_cxxflags -std=c++98
4630
4631 # some compilers silently accept -std=c11, so we also need to check that the
4632 # version macro is defined properly
4633 if test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L"; then
4634     add_cflags -std=c11
4635 else
4636     check_cflags -std=c99
4637 fi
4638
4639 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4640 #include <stdlib.h>
4641 EOF
4642 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4643 #include <stdlib.h>
4644 EOF
4645
4646 add_host_cppflags -D_ISOC99_SOURCE
4647 check_host_cflags -std=c99
4648 check_host_cflags -Wall
4649 check_host_cflags -O3
4650
4651 check_64bit(){
4652     arch32=$1
4653     arch64=$2
4654     expr=$3
4655     check_code cc "" "int test[2*($expr) - 1]" &&
4656         subarch=$arch64 || subarch=$arch32
4657 }
4658
4659 case "$arch" in
4660     aarch64|alpha|ia64)
4661         spic=$shared
4662     ;;
4663     mips)
4664         check_64bit mips mips64 '_MIPS_SIM > 1'
4665         spic=$shared
4666     ;;
4667     parisc)
4668         check_64bit parisc parisc64 'sizeof(void *) > 4'
4669         spic=$shared
4670     ;;
4671     ppc)
4672         check_64bit ppc ppc64 'sizeof(void *) > 4'
4673         spic=$shared
4674     ;;
4675     s390)
4676         check_64bit s390 s390x 'sizeof(void *) > 4'
4677         spic=$shared
4678     ;;
4679     sparc)
4680         check_64bit sparc sparc64 'sizeof(void *) > 4'
4681         spic=$shared
4682     ;;
4683     x86)
4684         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4685         # Treat x32 as x64 for now. Note it also needs spic=$shared
4686         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4687             subarch=x86_64
4688         if test "$subarch" = "x86_64"; then
4689             spic=$shared
4690         fi
4691     ;;
4692     ppc)
4693         check_cc <<EOF && subarch="ppc64"
4694         int test[(int)sizeof(char*) - 7];
4695 EOF
4696     ;;
4697 esac
4698
4699 enable $subarch
4700 enabled spic && enable_weak pic
4701
4702 # OS specific
4703 case $target_os in
4704     aix)
4705         SHFLAGS=-shared
4706         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4707         enabled shared && add_ldflags -Wl,-brtl
4708         ;;
4709     android)
4710         disable symver
4711         enable section_data_rel_ro
4712         SLIB_INSTALL_NAME='$(SLIBNAME)'
4713         SLIB_INSTALL_LINKS=
4714         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4715         ;;
4716     haiku)
4717         prefix_default="/boot/common"
4718         network_extralibs="-lnetwork"
4719         host_libs=
4720         ;;
4721     sunos)
4722         SHFLAGS='-shared -Wl,-h,$$(@F)'
4723         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4724         network_extralibs="-lsocket -lnsl"
4725         add_cppflags -D__EXTENSIONS__
4726         # When using suncc to build, the Solaris linker will mark
4727         # an executable with each instruction set encountered by
4728         # the Solaris assembler.  As our libraries contain their own
4729         # guards for processor-specific code, instead suppress
4730         # generation of the HWCAPS ELF section on Solaris x86 only.
4731         enabled_all suncc x86 &&
4732             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4733             add_ldflags -Wl,-M,mapfile
4734         nm_default='nm -P -g'
4735         version_script='-M'
4736         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
4737         ;;
4738     netbsd)
4739         disable symver
4740         oss_indev_extralibs="-lossaudio"
4741         oss_outdev_extralibs="-lossaudio"
4742         enabled gcc || check_ldflags -Wl,-zmuldefs
4743         ;;
4744     openbsd|bitrig)
4745         disable symver
4746         SHFLAGS='-shared'
4747         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4748         SLIB_INSTALL_LINKS=
4749         oss_indev_extralibs="-lossaudio"
4750         oss_outdev_extralibs="-lossaudio"
4751         ;;
4752     dragonfly)
4753         disable symver
4754         ;;
4755     freebsd)
4756         ;;
4757     bsd/os)
4758         add_extralibs -lpoll -lgnugetopt
4759         strip="strip -d"
4760         ;;
4761     darwin)
4762         enabled ppc && add_asflags -force_cpusubtype_ALL
4763         install_name_dir_default='$(SHLIBDIR)'
4764         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4765         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4766         strip="${strip} -x"
4767         add_ldflags -Wl,-dynamic,-search_paths_first
4768         SLIBSUF=".dylib"
4769         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4770         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4771         objformat="macho"
4772         enabled x86_64 && objformat="macho64"
4773         enabled_any pic shared x86_64 ||
4774             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4775         check_header dispatch/dispatch.h &&
4776             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
4777         version_script='-exported_symbols_list'
4778         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
4779         ;;
4780     msys*)
4781         die "Native MSYS builds are discouraged, please use the MINGW environment."
4782         ;;
4783     mingw32*|mingw64*)
4784         if test $target_os = "mingw32ce"; then
4785             disable network
4786         else
4787             target_os=mingw32
4788         fi
4789         decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
4790         decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
4791         LIBTARGET=i386
4792         if enabled x86_64; then
4793             LIBTARGET="i386:x86-64"
4794         elif enabled arm; then
4795             LIBTARGET=arm-wince
4796         fi
4797         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4798         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4799         shlibdir_default="$bindir_default"
4800         SLIBPREF=""
4801         SLIBSUF=".dll"
4802         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4803         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4804         dlltool="${cross_prefix}dlltool"
4805         if check_cmd lib.exe -list; then
4806             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4807             if enabled x86_64; then
4808                 LIBTARGET=x64
4809             fi
4810         elif check_cmd $dlltool --version; then
4811             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4812         fi
4813         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4814         SLIB_INSTALL_LINKS=
4815         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4816         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4817         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--disable-auto-image-base'
4818         objformat="win32"
4819         ranlib=:
4820         enable dos_paths
4821         check_ldflags -Wl,--nxcompat,--dynamicbase
4822         # Lets work around some stupidity in binutils.
4823         # ld will strip relocations from executables even though we need them
4824         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4825         # however ld then forgets what the entry point should be (oops) so we
4826         # have to manually (re)set it.
4827         if enabled x86_32; then
4828             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
4829         elif enabled x86_64; then
4830             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
4831             check_ldflags -Wl,--high-entropy-va # binutils 2.25
4832             # Set image base >4GB for extra entropy with HEASLR
4833             add_ldexeflags -Wl,--image-base,0x140000000
4834             append SHFLAGS -Wl,--image-base,0x180000000
4835         fi
4836         ;;
4837     win32|win64)
4838         disable symver
4839         if enabled shared; then
4840             # Link to the import library instead of the normal static library
4841             # for shared libs.
4842             LD_LIB='%.lib'
4843             # Cannot build both shared and static libs with MSVC or icl.
4844             disable static
4845         fi
4846         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4847         shlibdir_default="$bindir_default"
4848         SLIBPREF=""
4849         SLIBSUF=".dll"
4850         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4851         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4852         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4853         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4854         SLIB_INSTALL_LINKS=
4855         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4856         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4857         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4858         objformat="win32"
4859         ranlib=:
4860         enable dos_paths
4861         ;;
4862     cygwin*)
4863         target_os=cygwin
4864         shlibdir_default="$bindir_default"
4865         SLIBPREF="cyg"
4866         SLIBSUF=".dll"
4867         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4868         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4869         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4870         SLIB_INSTALL_LINKS=
4871         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4872         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4873         objformat="win32"
4874         enable dos_paths
4875         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4876         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4877         ;;
4878     *-dos|freedos|opendos)
4879         network_extralibs="-lsocket"
4880         objformat="coff"
4881         enable dos_paths
4882         add_cppflags -U__STRICT_ANSI__
4883         ;;
4884     linux)
4885         enable dv1394
4886         enable section_data_rel_ro
4887         ;;
4888     irix*)
4889         target_os=irix
4890         ranlib="echo ignoring ranlib"
4891         ;;
4892     os/2*)
4893         strip="lxlite -CS"
4894         objformat="aout"
4895         add_cppflags -D_GNU_SOURCE
4896         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4897         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4898         LIBSUF="_s.a"
4899         SLIBPREF=""
4900         SLIBSUF=".dll"
4901         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4902         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4903         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
4904             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
4905             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
4906             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
4907             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
4908         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
4909             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
4910         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4911         SLIB_INSTALL_LINKS=
4912         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
4913         enable dos_paths
4914         enable_weak os2threads
4915         ;;
4916     gnu/kfreebsd)
4917         add_cppflags -D_BSD_SOURCE
4918         ;;
4919     gnu)
4920         ;;
4921     qnx)
4922         add_cppflags -D_QNX_SOURCE
4923         network_extralibs="-lsocket"
4924         ;;
4925     symbian)
4926         SLIBSUF=".dll"
4927         enable dos_paths
4928         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4929         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4930         add_ldflags -Wl,--target1-abs,--no-undefined \
4931                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4932                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4933         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4934                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4935                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4936         ;;
4937     osf1)
4938         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4939         ;;
4940     minix)
4941         ;;
4942     plan9)
4943         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4944                      -D_REENTRANT_SOURCE        \
4945                      -D_RESEARCH_SOURCE         \
4946                      -DFD_SETSIZE=96            \
4947                      -DHAVE_SOCK_OPTS
4948         add_compat strtod.o strtod=avpriv_strtod
4949         network_extralibs='-lbsd'
4950         exeobjs=compat/plan9/main.o
4951         disable ffserver
4952         cp_f='cp'
4953         ;;
4954     none)
4955         ;;
4956     *)
4957         die "Unknown OS '$target_os'."
4958         ;;
4959 esac
4960
4961 # test if creating links works
4962 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
4963 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
4964 mkdir "$link_dest"
4965 $ln_s "$link_dest" "$link_name"
4966 touch "$link_dest/test_file"
4967 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
4968     # create link to source path
4969     [ -e src ] && rm src
4970     $ln_s "$source_path" src
4971     source_link=src
4972 else
4973     # creating directory links doesn't work
4974     # fall back to using the full source path
4975     source_link="$source_path"
4976 fi
4977 # cleanup
4978 rm -r "$link_dest"
4979 rm -r "$link_name"
4980
4981 # determine libc flavour
4982
4983 probe_libc(){
4984     pfx=$1
4985     pfx_no_=${pfx%_}
4986     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4987     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4988         eval ${pfx}libc_type=uclibc
4989         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4990     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4991         eval ${pfx}libc_type=glibc
4992         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4993     # MinGW headers can be installed on Cygwin, so check for newlib first.
4994     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4995         eval ${pfx}libc_type=newlib
4996         add_${pfx}cppflags -U__STRICT_ANSI__
4997     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4998     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4999         eval ${pfx}libc_type=mingw64
5000         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5001             add_compat msvcrt/snprintf.o
5002             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5003         fi
5004         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5005         eval test \$${pfx_no_}cc_type = "gcc" &&
5006             add_${pfx}cppflags -D__printf__=__gnu_printf__
5007     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5008          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5009         eval ${pfx}libc_type=mingw32
5010         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5011             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5012             die "ERROR: MinGW32 runtime version must be >= 3.15."
5013         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5014         check_${pfx}cpp_condition _mingw.h "defined(_WIN32_WINNT) && _WIN32_WINNT >= 0x0502" ||
5015             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
5016         eval test \$${pfx_no_}cc_type = "gcc" &&
5017             add_${pfx}cppflags -D__printf__=__gnu_printf__
5018     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5019         eval ${pfx}libc_type=msvcrt
5020         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5021             if [ "$pfx" = host_ ]; then
5022                 add_host_cppflags -Dsnprintf=_snprintf
5023             else
5024                 add_compat strtod.o strtod=avpriv_strtod
5025                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5026                                              _snprintf=avpriv_snprintf  \
5027                                              vsnprintf=avpriv_vsnprintf
5028             fi
5029         fi
5030         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5031         # 0x601 by default unless something else is set by the user.
5032         # This can easily lead to us detecting functions only present
5033         # in such new versions and producing binaries requiring windows 7.0.
5034         # Therefore explicitly set the default to XP unless the user has
5035         # set something else on the command line.
5036         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5037         # family. For these cases, configure is free to use any functions
5038         # found in the SDK headers by default. (Alternatively, we could force
5039         # _WIN32_WINNT to 0x0602 in that case.)
5040         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5041             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
5042 #ifdef WINAPI_FAMILY
5043 #include <winapifamily.h>
5044 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5045 #error not desktop
5046 #endif
5047 #endif
5048 EOF
5049     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5050         eval ${pfx}libc_type=klibc
5051     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5052         eval ${pfx}libc_type=bionic
5053     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5054         eval ${pfx}libc_type=solaris
5055         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5056     fi
5057     check_${pfx}cc <<EOF
5058 #include <time.h>
5059 void *v = localtime_r;
5060 EOF
5061 test "$?" != 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
5062 #include <time.h>
5063 void *v = localtime_r;
5064 EOF
5065
5066 }
5067
5068 probe_libc
5069 test -n "$libc_type" && enable libc_$libc_type
5070 probe_libc host_
5071 test -n "$host_libc_type" && enable host_libc_$host_libc_type
5072
5073 case $libc_type in
5074     bionic)
5075         add_compat strtod.o strtod=avpriv_strtod
5076         ;;
5077 esac
5078
5079 # hacks for compiler/libc/os combinations
5080
5081 if enabled_all tms470 libc_glibc; then
5082     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
5083     add_cppflags -D__USER_LABEL_PREFIX__=
5084     add_cppflags -D__builtin_memset=memset
5085     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
5086     add_cflags   -pds=48    # incompatible redefinition of macro
5087 fi
5088
5089 if enabled_all ccc libc_glibc; then
5090     add_ldflags -Wl,-z,now  # calls to libots crash without this
5091 fi
5092
5093 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5094     add_cppflags '-I\$(SRC_PATH)/compat/float'
5095
5096 esc(){
5097     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
5098 }
5099
5100 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
5101
5102 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5103
5104 set_default libdir
5105 : ${shlibdir_default:="$libdir"}
5106 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5107
5108 set_default $PATHS_LIST
5109 set_default nm
5110
5111 # we need to build at least one lib type
5112 if ! enabled_any static shared; then
5113     cat <<EOF
5114 At least one library type must be built.
5115 Specify --enable-static to build the static libraries or --enable-shared to
5116 build the shared libraries as well. To only build the shared libraries specify
5117 --disable-static in addition to --enable-shared.
5118 EOF
5119     exit 1
5120 fi
5121
5122 die_license_disabled() {
5123     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
5124 }
5125
5126 die_license_disabled_gpl() {
5127     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
5128 }
5129
5130 die_license_disabled gpl frei0r
5131 die_license_disabled gpl libcdio
5132 die_license_disabled gpl librubberband
5133 die_license_disabled gpl libsmbclient
5134 die_license_disabled gpl libvidstab
5135 die_license_disabled gpl libx264
5136 die_license_disabled gpl libx265
5137 die_license_disabled gpl libxavs
5138 die_license_disabled gpl libxvid
5139 die_license_disabled gpl x11grab
5140
5141 die_license_disabled nonfree libnpp
5142 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
5143 enabled gpl && die_license_disabled_gpl nonfree openssl
5144
5145 die_license_disabled version3 gmp
5146 die_license_disabled version3 libopencore_amrnb
5147 die_license_disabled version3 libopencore_amrwb
5148 die_license_disabled version3 libsmbclient
5149 die_license_disabled version3 libvo_amrwbenc
5150
5151 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
5152
5153 disabled optimizations || check_cflags -fomit-frame-pointer
5154
5155 enable_weak_pic() {
5156     disabled pic && return
5157     enable pic
5158     add_cppflags -DPIC
5159     case "$target_os" in
5160     mingw*|cygwin*)
5161         ;;
5162     *)
5163         add_cflags -fPIC
5164         ;;
5165     esac
5166     add_asflags  -fPIC
5167 }
5168
5169 enabled pic && enable_weak_pic
5170
5171 check_cc <<EOF || die "Symbol mangling check failed."
5172 int ff_extern;
5173 EOF
5174 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5175 extern_prefix=${sym%%ff_extern*}
5176
5177 check_cc <<EOF && enable_weak inline_asm
5178 void foo(void) { __asm__ volatile ("" ::); }
5179 EOF
5180
5181 _restrict=
5182 for restrict_keyword in restrict __restrict__ __restrict; do
5183     check_cc <<EOF && _restrict=$restrict_keyword && break
5184 void foo(char * $restrict_keyword p);
5185 EOF
5186 done
5187
5188 check_cc <<EOF && enable pragma_deprecated
5189 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
5190 EOF
5191
5192 check_cc <<EOF && enable attribute_packed
5193 struct { int x; } __attribute__((packed)) x;
5194 EOF
5195
5196 check_cc <<EOF && enable attribute_may_alias
5197 union { int x; } __attribute__((may_alias)) x;
5198 EOF
5199
5200 check_cc <<EOF || die "endian test failed"
5201 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5202 EOF
5203 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5204
5205 if ! enabled ppc64 || enabled bigendian; then
5206     disable vsx
5207 fi
5208
5209 check_gas() {
5210     log "check_gas using '$as' as AS"
5211     # :vararg is used on aarch64, arm and ppc altivec
5212     check_as <<EOF || return 1
5213 .macro m n, y:vararg=0
5214 \n: .int \y
5215 .endm
5216 m x
5217 EOF
5218     # .altmacro is only used in arm asm
5219     ! enabled arm || check_as <<EOF || return 1
5220 .altmacro
5221 EOF
5222     enable gnu_as
5223     return 0
5224 }
5225
5226 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5227     nogas=:
5228     enabled_any arm aarch64 && nogas=die
5229     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5230     as_noop=-v
5231
5232     case $as_type in
5233         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5234         gcc)  gaspp_as_type=gas ;;
5235         *)    gaspp_as_type=$as_type ;;
5236     esac
5237
5238     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5239
5240     test "${as#*gas-preprocessor.pl}" != "$as" ||
5241     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5242         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5243
5244     if ! check_gas ; then
5245         as=${gas:=$as}
5246         check_gas || \
5247             $nogas "GNU assembler not found, install/update gas-preprocessor"
5248     fi
5249
5250     check_as <<EOF && enable as_func
5251 .func test
5252 .endfunc
5253 EOF
5254 fi
5255
5256 check_inline_asm inline_asm_labels '"1:\n"'
5257
5258 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5259
5260 if enabled aarch64; then
5261     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5262     # internal assembler in clang 3.3 does not support this instruction
5263     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5264     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5265
5266     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5267
5268 elif enabled alpha; then
5269
5270     check_cflags -mieee
5271
5272 elif enabled arm; then
5273
5274     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
5275
5276     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
5277 float func(float a, float b){ return a+b; }
5278 EOF
5279
5280     enabled thumb && check_cflags -mthumb || check_cflags -marm
5281
5282     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
5283         enable vfp_args
5284     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5285         enable vfp_args
5286     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5287         case "${cross_prefix:-$cc}" in
5288             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
5289             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
5290 __asm__ (".eabi_attribute 28, 1");
5291 int main(void) { return 0; }
5292 EOF
5293         esac
5294         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5295     fi
5296
5297     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5298     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5299     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5300     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5301     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5302     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5303     enabled setend  && check_insn setend  'setend be'
5304
5305     [ $target_os = linux ] || [ $target_os = android ] ||
5306         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5307             $ARCH_EXT_LIST_ARM
5308
5309     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5310
5311     check_as <<EOF && enable as_dn_directive
5312 ra .dn d0.i16
5313 .unreq ra
5314 EOF
5315
5316     # llvm's integrated assembler supports .object_arch from llvm 3.5
5317     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
5318 .object_arch armv4
5319 EOF
5320
5321     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5322
5323 elif enabled mips; then
5324
5325     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5326     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5327     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5328
5329     # Enable minimum ISA based on selected options
5330     if enabled mips64; then
5331         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5332         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5333         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5334     else
5335         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5336         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5337         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5338         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5339     fi
5340
5341     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5342     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5343     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
5344     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5345     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5346
5347 elif enabled parisc; then
5348
5349     if enabled gcc; then
5350         case $($cc -dumpversion) in
5351             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5352         esac
5353     fi
5354
5355 elif enabled ppc; then
5356
5357     enable local_aligned_8 local_aligned_16 local_aligned_32
5358
5359     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5360     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5361     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5362     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5363
5364     # AltiVec flags: The FSF version of GCC differs from the Apple version
5365     if enabled altivec; then
5366         check_cflags -maltivec -mabi=altivec &&
5367         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
5368         check_cflags -faltivec
5369
5370         # check if our compiler supports Motorola AltiVec C API
5371         check_cc <<EOF || disable altivec
5372 $inc_altivec_h
5373 int main(void) {
5374     vector signed int v1 = (vector signed int) { 0 };
5375     vector signed int v2 = (vector signed int) { 1 };
5376     v1 = vec_add(v1, v2);
5377     return 0;
5378 }
5379 EOF
5380
5381         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5382     fi
5383
5384     if enabled vsx; then
5385         check_cflags -mvsx &&
5386         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
5387     fi
5388
5389     if enabled power8; then
5390         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
5391     fi
5392
5393 elif enabled x86; then
5394
5395     check_builtin rdtsc    intrin.h   "__rdtsc()"
5396     check_builtin mm_empty mmintrin.h "_mm_empty()"
5397
5398     enable local_aligned_8 local_aligned_16 local_aligned_32
5399
5400     # check whether EBP is available on x86
5401     # As 'i' is stored on the stack, this program will crash
5402     # if the base pointer is used to access it because the
5403     # base pointer is cleared in the inline assembly code.
5404     check_exec_crash <<EOF && enable ebp_available
5405 volatile int i=0;
5406 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5407 return i;
5408 EOF
5409
5410     # check whether EBX is available on x86
5411     check_inline_asm ebx_available '""::"b"(0)' &&
5412         check_inline_asm ebx_available '"":::"%ebx"'
5413
5414     # check whether xmm clobbers are supported
5415     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5416
5417     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5418         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5419
5420     # check whether binutils is new enough to compile SSSE3/MMXEXT
5421     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5422     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5423
5424     if ! disabled_any asm mmx yasm; then
5425         if check_cmd $yasmexe --version; then
5426             enabled x86_64 && yasm_extra="-m amd64"
5427             yasm_debug="-g dwarf2"
5428         elif check_cmd nasm -v; then
5429             yasmexe=nasm
5430             yasm_debug="-g -F dwarf"
5431             if enabled x86_64; then
5432                 case "$objformat" in
5433                     elf)   objformat=elf64 ;;
5434                     win32) objformat=win64 ;;
5435                 esac
5436             fi
5437         fi
5438
5439         YASMFLAGS="-f $objformat $yasm_extra"
5440         enabled pic               && append YASMFLAGS "-DPIC"
5441         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
5442         case "$objformat" in
5443             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
5444         esac
5445
5446         check_yasm "movbe ecx, [5]" && enable yasm ||
5447             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
5448         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
5449         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
5450         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
5451         check_yasm "CPU amdnop" || disable cpunop
5452     fi
5453
5454     case "$cpu" in
5455         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5456             disable fast_clz
5457         ;;
5458     esac
5459
5460 fi
5461
5462 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
5463
5464 check_ldflags -Wl,--as-needed
5465 check_ldflags -Wl,-z,noexecstack
5466
5467 if check_func dlopen && check_func dlsym; then
5468     ldl=
5469 elif check_func dlopen -ldl && check_func dlsym -ldl; then
5470     ldl=-ldl
5471 fi
5472
5473 avisynth_demuxer_extralibs='$ldl'
5474 cuda_extralibs='$ldl'
5475 decklink_outdev_extralibs="$decklink_outdev_extralibs $ldl"
5476 decklink_indev_extralibs="$decklink_indev_extralibs $ldl"
5477 frei0r_filter_extralibs='$ldl'
5478 frei0r_src_filter_extralibs='$ldl'
5479 ladspa_filter_extralibs='$ldl'
5480 nvenc_extralibs='$ldl'
5481 coreimage_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5482 coreimagesrc_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5483
5484 if ! disabled network; then
5485     check_func getaddrinfo $network_extralibs
5486     check_func inet_aton $network_extralibs
5487
5488     check_type netdb.h "struct addrinfo"
5489     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5490     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5491     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5492     check_type poll.h "struct pollfd"
5493     check_type netinet/sctp.h "struct sctp_event_subscribe"
5494     check_struct "sys/socket.h" "struct msghdr" msg_flags
5495     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5496     check_type netinet/in.h "struct sockaddr_in6"
5497     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5498     check_type "sys/types.h sys/socket.h" socklen_t
5499
5500     # Prefer arpa/inet.h over winsock2
5501     if check_header arpa/inet.h ; then
5502         check_func closesocket
5503     elif check_header winsock2.h ; then
5504         check_func_headers winsock2.h closesocket -lws2 &&
5505             network_extralibs="-lws2" ||
5506         { check_func_headers winsock2.h closesocket -lws2_32 &&
5507             network_extralibs="-lws2_32"; } || disable winsock2_h network
5508         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5509
5510         check_type ws2tcpip.h socklen_t
5511         check_type ws2tcpip.h "struct addrinfo"
5512         check_type ws2tcpip.h "struct group_source_req"
5513         check_type ws2tcpip.h "struct ip_mreq_source"
5514         check_type ws2tcpip.h "struct ipv6_mreq"
5515         check_type winsock2.h "struct pollfd"
5516         check_struct winsock2.h "struct sockaddr" sa_len
5517         check_type ws2tcpip.h "struct sockaddr_in6"
5518         check_type ws2tcpip.h "struct sockaddr_storage"
5519     else
5520         disable network
5521     fi
5522 fi
5523
5524 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5525 check_builtin atomic_compare_exchange "" "int *ptr, *oldval; int newval; __atomic_compare_exchange_n(ptr, oldval, newval, 0, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST)"
5526 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5527 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5528 check_builtin sarestart signal.h "SA_RESTART"
5529 check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" -lpthread
5530 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5531 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5532 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5533 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5534
5535 case "$custom_allocator" in
5536     jemalloc)
5537         # jemalloc by default does not use a prefix
5538         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5539     ;;
5540     tcmalloc)
5541         require_pkg_config libtcmalloc gperftools/tcmalloc.h tc_malloc
5542         malloc_prefix=tc_
5543     ;;
5544 esac
5545
5546 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5547 check_func  ${malloc_prefix}memalign            && enable memalign
5548 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5549
5550 check_func  access
5551 check_func_headers stdlib.h arc4random
5552 check_func_headers time.h clock_gettime || { check_func_headers time.h clock_gettime -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
5553 check_func  fcntl
5554 check_func  fork
5555 check_func  gethrtime
5556 check_func  getopt
5557 check_func  getrusage
5558 check_func  gettimeofday
5559 check_func  isatty
5560 check_func  mach_absolute_time
5561 check_func  mkstemp
5562 check_func  mmap
5563 check_func  mprotect
5564 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5565 check_func_headers time.h nanosleep || { check_func_headers time.h nanosleep -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
5566 check_func  sched_getaffinity
5567 check_func  setrlimit
5568 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5569 check_func  strerror_r
5570 check_func  sysconf
5571 check_func  sysctl
5572 check_func  usleep
5573
5574 check_func_headers conio.h kbhit
5575 check_func_headers io.h setmode
5576 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5577 check_func_headers stdlib.h getenv
5578 check_func_headers sys/stat.h lstat
5579
5580 check_func_headers windows.h CoTaskMemFree -lole32
5581 check_func_headers windows.h GetProcessAffinityMask
5582 check_func_headers windows.h GetProcessTimes
5583 check_func_headers windows.h GetSystemTimeAsFileTime
5584 check_func_headers windows.h LoadLibrary
5585 check_func_headers windows.h MapViewOfFile
5586 check_func_headers windows.h PeekNamedPipe
5587 check_func_headers windows.h SetConsoleTextAttribute
5588 check_func_headers windows.h SetConsoleCtrlHandler
5589 check_func_headers windows.h Sleep
5590 check_func_headers windows.h VirtualAlloc
5591 check_struct windows.h "CONDITION_VARIABLE" Ptr
5592 check_func_headers glob.h glob
5593 enabled xlib &&
5594     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5595
5596 check_header AudioToolbox/AudioToolbox.h
5597 check_header direct.h
5598 check_header dirent.h
5599 check_header dlfcn.h
5600 check_header d3d11.h
5601 check_header dxva.h
5602 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5603 check_header io.h
5604 check_header libcrystalhd/libcrystalhd_if.h
5605 check_header mach/mach_time.h
5606 check_header malloc.h
5607 check_header net/udplite.h
5608 check_header poll.h
5609 check_header sys/mman.h
5610 check_header sys/param.h
5611 check_header sys/resource.h
5612 check_header sys/select.h
5613 check_header sys/time.h
5614 check_header sys/un.h
5615 check_header termios.h
5616 check_header unistd.h
5617 check_header valgrind/valgrind.h
5618 check_header vdpau/vdpau.h
5619 check_header vdpau/vdpau_x11.h
5620 check_header VideoDecodeAcceleration/VDADecoder.h
5621 check_header VideoToolbox/VideoToolbox.h
5622 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5623 enabled videotoolbox && check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferColorPrimaries_ITU_R_2020 -framework CoreVideo
5624 check_header windows.h
5625 check_header X11/extensions/XvMClib.h
5626 check_header asm/types.h
5627
5628 # it seems there are versions of clang in some distros that try to use the
5629 # gcc headers, which explodes for stdatomic
5630 # so we also check that atomics actually work here
5631 check_builtin stdatomic_h stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0)"
5632
5633 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
5634 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
5635 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
5636 check_lib "CoreServices/CoreServices.h" UTGetOSTypeFromString "-framework CoreServices"
5637
5638 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5639
5640 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5641 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5642 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5643 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5644 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5645
5646 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
5647 check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
5648 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
5649 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
5650 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5651 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5652
5653 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5654
5655 check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt
5656
5657 if ! disabled w32threads && ! enabled pthreads; then
5658     check_func_headers "windows.h process.h" _beginthreadex &&
5659         enable w32threads || disable w32threads
5660     if ! enabled w32threads && enabled winrt; then
5661         check_func_headers "windows.h" CreateThread &&
5662             enable w32threads || disable w32threads
5663     fi
5664 fi
5665
5666 # check for some common methods of building with pthread support
5667 # do this before the optional library checks as some of them require pthreads
5668 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5669     enable pthreads
5670     if check_func pthread_join -pthread && check_func pthread_create -pthread; then
5671         add_cflags -pthread
5672         add_extralibs -pthread
5673     elif check_func pthread_join -pthreads && check_func pthread_create -pthreads; then
5674         add_cflags -pthreads
5675         add_extralibs -pthreads
5676     elif check_func pthread_join -ldl -pthread && check_func pthread_create -ldl -pthread; then
5677         add_cflags -ldl -pthread
5678         add_extralibs -ldl -pthread
5679     elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
5680         add_extralibs -lpthreadGC2
5681     elif check_lib pthread.h pthread_join -lpthread && check_lib pthread.h pthread_create -lpthread; then
5682         :
5683     elif ! check_func pthread_join && ! check_func pthread_create; then
5684         disable pthreads
5685     fi
5686     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5687 fi
5688
5689
5690 if enabled pthreads; then
5691   check_func pthread_cancel
5692 fi
5693
5694 enabled pthreads &&
5695     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)"
5696
5697 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
5698 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
5699 disabled  lzma || check_lib2  lzma.h lzma_version_number -llzma || disable lzma
5700
5701 check_lib math.h sin -lm && LIBM="-lm"
5702 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
5703
5704 atan2f_args=2
5705 copysign_args=2
5706 hypot_args=2
5707 ldexpf_args=2
5708 powf_args=2
5709
5710 for func in $MATH_FUNCS; do
5711     eval check_mathfunc $func \${${func}_args:-1}
5712 done
5713
5714 for func in $COMPLEX_FUNCS; do
5715     eval check_complexfunc $func \${${func}_args:-1}
5716 done
5717
5718 # these are off by default, so fail if requested and not available
5719 enabled avfoundation_indev && { check_header_objcc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
5720 enabled avfoundation_indev && { check_lib2 CoreGraphics/CoreGraphics.h CGGetActiveDisplayList -framework CoreGraphics ||
5721                                 check_lib2 ApplicationServices/ApplicationServices.h CGGetActiveDisplayList -framework ApplicationServices; }
5722 enabled cuda              && check_header cuda.h # this is not a dependency
5723 enabled cuvid             && { enabled cuda ||
5724                                die "ERROR: CUVID requires CUDA"; }
5725 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5726 enabled coreimage_filter  && { check_header_objcc QuartzCore/CoreImage.h || disable coreimage_filter; }
5727 enabled coreimagesrc_filter && { check_header_objcc QuartzCore/CoreImage.h || disable coreimagesrc_filter; }
5728 enabled decklink          && { { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; } &&
5729                                { check_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a060100" || die "ERROR: Decklink API version must be >= 10.6.1."; } }
5730 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
5731 enabled gmp               && require2 gmp gmp.h mpz_export -lgmp
5732 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
5733 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads &&
5734                                check_lib2 "dlfcn.h" dlopen -ldl; }
5735 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
5736 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5737 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
5738 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
5739 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
5740 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5741                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
5742                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5743 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
5744 enabled libfdk_aac        && { use_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5745                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5746                                  warn "using libfdk without pkg-config"; } }
5747 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"
5748 enabled libflite          && require2 libflite "flite/flite.h" flite_init $flite_libs
5749 enabled fontconfig        && enable libfontconfig
5750 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
5751 enabled libfreetype       && require_libfreetype
5752 enabled libfribidi        && require_pkg_config fribidi fribidi.h fribidi_version_info
5753 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
5754 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5755                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
5756                                done || die "ERROR: libgsm not found"; }
5757 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
5758 enabled libkvazaar        && require_pkg_config "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
5759 enabled libmfx            && require_pkg_config libmfx "mfx/mfxvideo.h" MFXInit
5760 enabled libmodplug        && require_pkg_config libmodplug libmodplug/modplug.h ModPlug_Load
5761 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5762 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
5763 enabled libnpp            && require libnpp npp.h nppGetLibVersion -lnppi -lnppc
5764 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5765 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5766 enabled libopencv         && { check_header opencv2/core/core_c.h &&
5767                                { use_pkg_config opencv opencv2/core/core_c.h cvCreateImageHeader ||
5768                                  require opencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
5769                                require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader; }
5770 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
5771 enabled libopenjpeg       && { { check_lib2 openjpeg-2.1/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5772                                check_lib2 openjpeg-2.1/openjpeg.h opj_version -lopenjp2 ||
5773                                { check_lib2 openjpeg-2.0/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5774                                { check_lib2 openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5775                                { check_lib2 openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5776                                die "ERROR: libopenjpeg not found"; }
5777 enabled libopenmpt        && require_pkg_config "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create
5778 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
5779 enabled libpulse          && require_pkg_config libpulse pulse/pulseaudio.h pa_context_new
5780 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
5781 enabled librubberband     && require_pkg_config "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new
5782 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
5783 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
5784 enabled libsmbclient      && { use_pkg_config smbclient libsmbclient.h smbc_init ||
5785                                require smbclient libsmbclient.h smbc_init -lsmbclient; }
5786 enabled libsnappy         && require snappy snappy-c.h snappy_compress -lsnappy
5787 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr && LIBSOXR="-lsoxr"
5788 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
5789 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
5790 enabled libtesseract      && require_pkg_config tesseract tesseract/capi.h TessBaseAPICreate
5791 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
5792 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
5793                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
5794                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
5795 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
5796 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
5797 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
5798 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
5799
5800 enabled libvpx            && {
5801     enabled libvpx_vp8_decoder && {
5802         use_pkg_config "vpx >= 0.9.1" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
5803             check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
5804                 die "ERROR: libvpx decoder version must be >=0.9.1";
5805     }
5806     enabled libvpx_vp8_encoder && {
5807         use_pkg_config "vpx >= 0.9.7" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
5808             check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
5809                 die "ERROR: libvpx encoder version must be >=0.9.7";
5810     }
5811     enabled libvpx_vp9_decoder && {
5812         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
5813             check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx ||
5814                 disable libvpx_vp9_decoder;
5815     }
5816     enabled libvpx_vp9_encoder && {
5817         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
5818             check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx ||
5819                 disable libvpx_vp9_encoder;
5820     }
5821     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
5822         die "libvpx enabled but no supported decoders found"
5823     fi
5824 }
5825
5826 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
5827 enabled libwebp           && {
5828     enabled libwebp_encoder      && require_pkg_config "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
5829     enabled libwebp_anim_encoder && { use_pkg_config "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit || disable libwebp_anim_encoder; } }
5830 enabled libx264           && { use_pkg_config x264 "stdint.h x264.h" x264_encoder_encode ||
5831                                { require libx264 x264.h x264_encoder_encode -lx264 &&
5832                                  warn "using libx264 without pkg-config"; } } &&
5833                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
5834                                die "ERROR: libx264 must be installed and version must be >= 0.118."; } &&
5835                              { check_cpp_condition x264.h "X264_MPEG2" &&
5836                                enable libx262; }
5837 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
5838                              { check_cpp_condition x265.h "X265_BUILD >= 68" ||
5839                                die "ERROR: libx265 version must be >= 68."; }
5840 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
5841 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
5842 enabled libzimg           && require_pkg_config "zimg >= 2.3.0" zimg.h zimg_get_api_version
5843 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
5844 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi &&
5845                              { check_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
5846                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
5847 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
5848 enabled mmal              && { check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
5849                                 { ! enabled cross_compile && {
5850                                     add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline ;
5851                                     add_extralibs -L/opt/vc/lib/ -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ;
5852                                     check_lib interface/mmal/mmal.h mmal_port_connect ; }
5853                                 check_lib interface/mmal/mmal.h mmal_port_connect ; } ||
5854                                die "ERROR: mmal not found"; }
5855 enabled mmal && check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"
5856
5857 enabled netcdf            && require_pkg_config netcdf netcdf.h nc_inq_libvers
5858 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
5859                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
5860                                die "ERROR: openal not found"; } &&
5861                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
5862                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
5863 enabled opencl            && { check_lib2 OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
5864                                check_lib2 CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
5865                                die "ERROR: opencl not found"; } &&
5866                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
5867                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
5868                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
5869 enabled opengl            && { check_lib GL/glx.h glXGetProcAddress "-lGL" ||
5870                                check_lib2 windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
5871                                check_lib2 OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
5872                                check_lib2 ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
5873                                die "ERROR: opengl not found."
5874                              }
5875 enabled omx_rpi && enable omx
5876 enabled omx               && { check_header OMX_Core.h ||
5877                                 { ! enabled cross_compile && enabled omx_rpi && {
5878                                     add_cflags -isystem/opt/vc/include/IL ; }
5879                                 check_header OMX_Core.h ; } ||
5880                                die "ERROR: OpenMAX IL headers not found"; }
5881 enabled openssl           && { use_pkg_config openssl openssl/ssl.h OPENSSL_init_ssl ||
5882                                use_pkg_config openssl openssl/ssl.h SSL_library_init ||
5883                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
5884                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
5885                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
5886                                die "ERROR: openssl not found"; }
5887 enabled qtkit_indev      && { check_header_objcc QTKit/QTKit.h || disable qtkit_indev; }
5888
5889 # libdc1394 check
5890 if enabled libdc1394; then
5891     { require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new &&
5892         enable libdc1394_2; } ||
5893     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
5894         enable libdc1394_1; } ||
5895     die "ERROR: No version of libdc1394 found "
5896 fi
5897
5898 if enabled gcrypt; then
5899     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
5900     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
5901         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
5902         gcrypt_libs=$("${GCRYPT_CONFIG}" --libs)
5903         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_libs ||
5904             die "ERROR: gcrypt not found"
5905         add_cflags $gcrypt_cflags && add_extralibs $gcrypt_libs
5906     else
5907         require2 gcrypt gcrypt.h gcry_mpi_new -lgcrypt
5908     fi
5909 fi
5910
5911 disabled sdl && disable sdl2
5912 if ! disabled sdl2; then
5913     SDL2_CONFIG="${cross_prefix}sdl2-config"
5914     if check_pkg_config sdl2 SDL_events.h SDL_PollEvent; then
5915         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
5916         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
5917         check_func SDL_Init $sdl2_libs $sdl2_cflags && enable sdl2
5918     else
5919       if "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
5920         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
5921         sdl2_libs=$("${SDL2_CONFIG}" --libs)
5922         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
5923         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
5924         check_func SDL_Init $sdl2_libs $sdl2_cflags && enable sdl2
5925       fi
5926     fi
5927     if test $target_os = "mingw32"; then
5928         sdl2_libs="$sdl2_libs -mconsole"
5929     fi
5930 fi
5931 enabled sdl2 && enable sdl && add_cflags $sdl2_cflags && add_extralibs $sdl2_libs
5932
5933 disabled securetransport || { check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5934     check_lib2 "Security/SecureTransport.h Security/Security.h" "SSLCreateContext SecItemImport" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5935     enable securetransport; }
5936
5937 disabled schannel || { check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
5938                        check_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" && enable schannel && add_extralibs -lsecur32; }
5939
5940 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
5941 enabled makeinfo \
5942     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
5943     && enable makeinfo_html || disable makeinfo_html
5944 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
5945 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
5946 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
5947 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
5948
5949 check_header linux/fb.h
5950 check_header linux/videodev.h
5951 check_header linux/videodev2.h
5952 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5953
5954 check_header sys/videoio.h
5955 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5956
5957 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
5958 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
5959 # w32api 3.12 had it defined wrong
5960 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
5961
5962 check_type "dshow.h" IBaseFilter
5963
5964 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
5965 { check_header dev/bktr/ioctl_meteor.h &&
5966   check_header dev/bktr/ioctl_bt848.h; } ||
5967 { check_header machine/ioctl_meteor.h &&
5968   check_header machine/ioctl_bt848.h; } ||
5969 { check_header dev/video/meteor/ioctl_meteor.h &&
5970   check_header dev/video/bktr/ioctl_bt848.h; } ||
5971 check_header dev/ic/bt8xx.h
5972
5973 check_header sndio.h
5974 if check_struct sys/soundcard.h audio_buf_info bytes; then
5975     enable_safe sys/soundcard.h
5976 else
5977     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
5978     #include <sys/soundcard.h>
5979     audio_buf_info abc;
5980 EOF
5981 fi
5982 check_header soundcard.h
5983
5984 enabled_any alsa_indev alsa_outdev &&
5985     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
5986
5987 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack &&
5988     check_func jack_port_get_latency_range -ljack
5989
5990 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
5991
5992 if enabled libcdio; then
5993     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
5994     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
5995     die "ERROR: No usable libcdio/cdparanoia found"
5996 fi
5997
5998 enabled xlib &&
5999     check_lib X11/Xlib.h XOpenDisplay -lX11 || disable xlib
6000
6001 if ! disabled libxcb; then
6002     check_pkg_config "xcb >= 1.4" xcb/xcb.h xcb_connect || {
6003         enabled libxcb && die "ERROR: libxcb >= 1.4 not found";
6004     } && disable x11grab && enable libxcb
6005
6006 if enabled libxcb; then
6007     disabled libxcb_shm || {
6008         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
6009             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
6010         } && check_header sys/shm.h && enable libxcb_shm; }
6011
6012     disabled libxcb_xfixes || {
6013         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
6014             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
6015         } && enable libxcb_xfixes; }
6016
6017     disabled libxcb_shape || {
6018         check_pkg_config xcb-shape xcb/shape.h xcb_shape_get_rectangles || {
6019             enabled libxcb_shape && die "ERROR: libxcb_shape not found";
6020         } && enable libxcb_shape; }
6021
6022     add_cflags $xcb_cflags $xcb_shm_cflags $xcb_xfixes_cflags $xcb_shape_cflags
6023     add_extralibs $xcb_libs $xcb_shm_libs $xcb_xfixes_libs $xcb_shape_libs
6024 fi
6025 fi
6026
6027 if enabled x11grab; then
6028     enabled xlib || die "ERROR: Xlib not found"
6029     require Xext X11/extensions/XShm.h XShmCreateImage -lXext
6030     require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
6031 fi
6032
6033 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6034
6035 enabled dxva2api_h &&
6036     check_cc <<EOF && enable dxva2api_cobj
6037 #define _WIN32_WINNT 0x0600
6038 #define COBJMACROS
6039 #include <windows.h>
6040 #include <d3d9.h>
6041 #include <dxva2api.h>
6042 int main(void) { IDirectXVideoDecoder *o = NULL; IDirectXVideoDecoder_Release(o); return 0; }
6043 EOF
6044
6045 enabled vaapi &&
6046     check_lib va/va.h vaInitialize -lva ||
6047     disable vaapi
6048
6049 enabled vaapi &&
6050     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
6051     disable vaapi
6052
6053 if enabled vaapi ; then
6054     enabled xlib &&
6055     check_lib2 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 &&
6056     enable vaapi_x11
6057
6058     check_lib2 "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm &&
6059     enable vaapi_drm
6060 fi
6061
6062 enabled vdpau &&
6063     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
6064     disable vdpau
6065
6066 enabled vdpau && enabled xlib &&
6067     check_lib2 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
6068     enable vdpau_x11
6069
6070 if enabled x86; then
6071     case $target_os in
6072         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6073             ;;
6074         *)
6075             disable cuda cuvid nvenc
6076             ;;
6077     esac
6078 else
6079     disable cuda cuvid nvenc
6080 fi
6081
6082 enabled nvenc &&
6083     check_cc -I$source_path <<EOF || disable nvenc
6084 #include "compat/nvenc/nvEncodeAPI.h"
6085 NV_ENCODE_API_FUNCTION_LIST flist;
6086 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6087 int main(void) { return 0; }
6088 EOF
6089
6090 # Funny iconv installations are not unusual, so check it after all flags have been set
6091 disabled iconv || check_func_headers iconv.h iconv || check_lib2 iconv.h iconv -liconv || disable iconv
6092
6093 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6094
6095 # add some useful compiler flags if supported
6096 check_cflags -Wdeclaration-after-statement
6097 check_cflags -Wall
6098 check_cflags -Wdisabled-optimization
6099 check_cflags -Wpointer-arith
6100 check_cflags -Wredundant-decls
6101 check_cflags -Wwrite-strings
6102 check_cflags -Wtype-limits
6103 check_cflags -Wundef
6104 check_cflags -Wmissing-prototypes
6105 check_cflags -Wno-pointer-to-int-cast
6106 check_cflags -Wstrict-prototypes
6107 check_cflags -Wempty-body
6108 enabled extra_warnings && check_cflags -Winline
6109 enabled extra_warnings && check_cflags -Wcast-qual
6110
6111 check_disable_warning(){
6112     warning_flag=-W${1#-Wno-}
6113     test_cflags $warning_flag && add_cflags $1
6114 }
6115
6116 check_disable_warning -Wno-parentheses
6117 check_disable_warning -Wno-switch
6118 check_disable_warning -Wno-format-zero-length
6119 check_disable_warning -Wno-pointer-sign
6120 check_disable_warning -Wno-unused-const-variable
6121
6122 # add some linker flags
6123 check_ldflags -Wl,--warn-common
6124 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6125 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
6126 enabled rpath && add_ldlibflags -Wl,-rpath,$libdir
6127 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6128
6129 # add some strip flags
6130 # -wN '..@*' is more selective than -x, but not available everywhere.
6131 check_stripflags -wN \'..@*\' || check_stripflags -x
6132
6133 enabled neon_clobber_test &&
6134     check_ldflags -Wl,--wrap,avcodec_open2              \
6135                   -Wl,--wrap,avcodec_decode_audio4      \
6136                   -Wl,--wrap,avcodec_decode_video2      \
6137                   -Wl,--wrap,avcodec_decode_subtitle2   \
6138                   -Wl,--wrap,avcodec_encode_audio2      \
6139                   -Wl,--wrap,avcodec_encode_video2      \
6140                   -Wl,--wrap,avcodec_send_packet        \
6141                   -Wl,--wrap,avcodec_receive_frame      \
6142                   -Wl,--wrap,avcodec_send_frame         \
6143                   -Wl,--wrap,avcodec_receive_packet     \
6144                   -Wl,--wrap,avcodec_encode_subtitle    \
6145                   -Wl,--wrap,swr_convert                \
6146                   -Wl,--wrap,avresample_convert ||
6147     disable neon_clobber_test
6148
6149 enabled xmm_clobber_test &&
6150     check_ldflags -Wl,--wrap,avcodec_open2              \
6151                   -Wl,--wrap,avcodec_decode_audio4      \
6152                   -Wl,--wrap,avcodec_decode_video2      \
6153                   -Wl,--wrap,avcodec_decode_subtitle2   \
6154                   -Wl,--wrap,avcodec_encode_audio2      \
6155                   -Wl,--wrap,avcodec_encode_video2      \
6156                   -Wl,--wrap,avcodec_encode_subtitle    \
6157                   -Wl,--wrap,avcodec_send_packet        \
6158                   -Wl,--wrap,avcodec_receive_frame      \
6159                   -Wl,--wrap,avcodec_send_frame         \
6160                   -Wl,--wrap,avcodec_receive_packet     \
6161                   -Wl,--wrap,swr_convert                \
6162                   -Wl,--wrap,avresample_convert         \
6163                   -Wl,--wrap,sws_scale ||
6164     disable xmm_clobber_test
6165
6166 check_ld "cc" <<EOF && enable proper_dce
6167 extern const int array[512];
6168 static inline int func(void) { return array[0]; }
6169 int main(void) { return 0; }
6170 EOF
6171
6172 if enabled proper_dce; then
6173     echo "X { local: *; };" > $TMPV
6174     if test_ldflags -Wl,${version_script},$TMPV; then
6175         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6176         check_cc <<EOF && enable symver_asm_label
6177 void ff_foo(void) __asm__ ("av_foo@VERSION");
6178 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6179 EOF
6180         check_cc <<EOF && enable symver_gnu_asm
6181 __asm__(".symver ff_foo,av_foo@VERSION");
6182 void ff_foo(void) {}
6183 EOF
6184     fi
6185 fi
6186
6187 if [ -z "$optflags" ]; then
6188     if enabled small; then
6189         optflags=$cflags_size
6190     elif enabled optimizations; then
6191         optflags=$cflags_speed
6192     else
6193         optflags=$cflags_noopt
6194     fi
6195 fi
6196
6197 check_optflags(){
6198     check_cflags "$@"
6199     enabled lto && check_ldflags "$@"
6200 }
6201
6202
6203 if enabled lto; then
6204     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6205     check_cflags  -flto
6206     check_ldflags -flto $cpuflags
6207     disable inline_asm_direct_symbol_refs
6208 fi
6209
6210 check_optflags $optflags
6211 check_optflags -fno-math-errno
6212 check_optflags -fno-signed-zeros
6213
6214 enabled ftrapv && check_cflags -ftrapv
6215
6216 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6217 int x;
6218 EOF
6219
6220
6221 if enabled icc; then
6222     # Just warnings, no remarks
6223     check_cflags -w1
6224     # -wd: Disable following warnings
6225     # 144, 167, 556: -Wno-pointer-sign
6226     # 188: enumerated type mixed with another type
6227     # 1292: attribute "foo" ignored
6228     # 1419: external declaration in primary source file
6229     # 10006: ignoring unknown option -fno-signed-zeros
6230     # 10148: ignoring unknown option -Wno-parentheses
6231     # 10156: ignoring option '-W'; no argument required
6232     # 13200: No EMMS instruction before call to function
6233     # 13203: No EMMS instruction before return from function
6234     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6235     # 11030: Warning unknown option --as-needed
6236     # 10156: ignoring option '-export'; no argument required
6237     check_ldflags -wd10156,11030
6238     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6239     enable ebp_available
6240     # The test above does not test linking
6241     enabled lto && disable symver_asm_label
6242     if enabled x86_32; then
6243         icc_version=$($cc -dumpversion)
6244         test ${icc_version%%.*} -ge 11 &&
6245             check_cflags -falign-stack=maintain-16-byte ||
6246             disable aligned_stack
6247     fi
6248 elif enabled ccc; then
6249     # disable some annoying warnings
6250     add_cflags -msg_disable bitnotint
6251     add_cflags -msg_disable mixfuncvoid
6252     add_cflags -msg_disable nonstandcast
6253     add_cflags -msg_disable unsupieee
6254 elif enabled gcc; then
6255     check_optflags -fno-tree-vectorize
6256     check_cflags -Werror=format-security
6257     check_cflags -Werror=implicit-function-declaration
6258     check_cflags -Werror=missing-prototypes
6259     check_cflags -Werror=return-type
6260     check_cflags -Werror=vla
6261     check_cflags -Wformat
6262     check_cflags -fdiagnostics-color=auto
6263     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6264 elif enabled llvm_gcc; then
6265     check_cflags -mllvm -stack-alignment=16
6266 elif enabled clang; then
6267     check_cflags -mllvm -stack-alignment=16
6268     check_cflags -mstack-alignment=16
6269     check_cflags -Qunused-arguments
6270     check_cflags -Werror=implicit-function-declaration
6271     check_cflags -Werror=missing-prototypes
6272     check_cflags -Werror=return-type
6273 elif enabled cparser; then
6274     add_cflags -Wno-missing-variable-declarations
6275     add_cflags -Wno-empty-statement
6276 elif enabled armcc; then
6277     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6278     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6279     # 2523: use of inline assembly is deprecated
6280     add_cflags -W${armcc_opt},--diag_suppress=2523
6281     add_cflags -W${armcc_opt},--diag_suppress=1207
6282     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6283     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6284     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6285     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6286 elif enabled tms470; then
6287     add_cflags -pds=824 -pds=837
6288     disable inline_asm
6289 elif enabled pathscale; then
6290     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6291 elif enabled_any msvc icl; then
6292     enabled x86_32 && disable aligned_stack
6293     enabled_all x86_32 debug && add_cflags -Oy-
6294     enabled debug && add_ldflags -debug
6295     enable pragma_deprecated
6296     if enabled icl; then
6297         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6298         # (correctly) on icl 13.x.
6299         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6300             add_cflags -Qansi-alias
6301         # Some inline asm is not compilable in debug
6302         if enabled debug; then
6303             disable ebp_available
6304             disable ebx_available
6305         fi
6306     fi
6307     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6308     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
6309     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6310     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6311     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6312     # MSVC 2013 and newer can handle it fine.
6313     # If this declspec fails, force including stdlib.h before the restrict redefinition
6314     # happens in config.h.
6315     if [ $_restrict != restrict ]; then
6316         check_cc <<EOF || add_cflags -FIstdlib.h
6317 __declspec($_restrict) void* foo(int);
6318 EOF
6319     fi
6320     check_func strtoll || add_cflags -Dstrtoll=_strtoi64
6321     check_func strtoull || add_cflags -Dstrtoull=_strtoui64
6322     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6323     # Issue has been fixed in MSVC v19.00.24218.
6324     check_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6325         check_cflags -d2SSAOptimizer-
6326 fi
6327
6328 for pfx in "" host_; do
6329     varname=${pfx%_}cc_type
6330     eval "type=\$$varname"
6331     if [ $type = "msvc" ]; then
6332         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6333 static inline int foo(int a) { return a; }
6334 EOF
6335     fi
6336 done
6337
6338 case $as_type in
6339     clang)
6340         add_asflags -Qunused-arguments
6341     ;;
6342 esac
6343
6344 case $ld_type in
6345     clang)
6346         check_ldflags -Qunused-arguments
6347     ;;
6348 esac
6349
6350 case $target_os in
6351     osf1)
6352         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
6353     ;;
6354     plan9)
6355         add_cppflags -Dmain=plan9_main
6356     ;;
6357 esac
6358
6359 enable frame_thread_encoder
6360
6361 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6362
6363 check_deps $CONFIG_LIST       \
6364            $CONFIG_EXTRA      \
6365            $HAVE_LIST         \
6366            $ALL_COMPONENTS    \
6367
6368 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"
6369
6370
6371 if test $target_os = "haiku"; then
6372     disable memalign
6373     disable posix_memalign
6374 fi
6375
6376 enabled_all dxva2 dxva2api_cobj CoTaskMemFree &&
6377     prepend ffmpeg_libs $($ldflags_filter "-lole32") &&
6378     enable dxva2_lib
6379
6380 ! enabled_any memalign posix_memalign aligned_malloc &&
6381     enabled simd_align_16 && enable memalign_hack
6382
6383 # add_dep lib dep
6384 # -> enable ${lib}_deps_${dep}
6385 # -> add $dep to ${lib}_deps only once
6386 add_dep() {
6387     lib=$1
6388     dep=$2
6389     enabled "${lib}_deps_${dep}" && return 0
6390     enable  "${lib}_deps_${dep}"
6391     prepend "${lib}_deps" $dep
6392 }
6393
6394 # merge deps lib components
6395 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
6396 merge_deps() {
6397     lib=$1
6398     shift
6399     for comp in $*; do
6400         enabled $comp || continue
6401         eval "dep=\"\$${comp}_deps\""
6402         for d in $dep; do
6403             add_dep $lib $d
6404         done
6405     done
6406 }
6407
6408 merge_deps libavfilter $FILTER_LIST
6409
6410 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6411
6412 for thread in $THREADS_LIST; do
6413     if enabled $thread; then
6414         test -n "$thread_type" &&
6415             die "ERROR: Only one thread type must be selected." ||
6416             thread_type="$thread"
6417     fi
6418 done
6419
6420 if disabled stdatomic_h; then
6421     if enabled atomics_gcc; then
6422         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6423     elif enabled atomics_win32; then
6424         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6425     elif enabled atomics_suncc; then
6426         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6427     elif enabled pthreads; then
6428         add_compat atomics/pthread/stdatomic.o
6429         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6430     else
6431         enabled threads && die "Threading is enabled, but no atomics are available"
6432         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6433     fi
6434 fi
6435
6436 # Check if requested libraries were found.
6437 for lib in $AUTODETECT_LIBS; do
6438     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6439 done
6440
6441 enabled zlib && add_cppflags -DZLIB_CONST
6442
6443 # conditional library dependencies, in linking order
6444 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6445 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6446 enabled aresample_filter    && prepend avfilter_deps "swresample"
6447 enabled asyncts_filter      && prepend avfilter_deps "avresample"
6448 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6449 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6450 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6451 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6452 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6453 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6454 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6455 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6456 enabled pan_filter          && prepend avfilter_deps "swresample"
6457 enabled pp_filter           && prepend avfilter_deps "postproc"
6458 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6459 enabled resample_filter && prepend avfilter_deps "avresample"
6460 enabled sab_filter          && prepend avfilter_deps "swscale"
6461 enabled scale_filter    && prepend avfilter_deps "swscale"
6462 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6463 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6464 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6465 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6466 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6467 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6468 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6469 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6470 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6471
6472 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6473
6474 enabled opus_decoder    && prepend avcodec_deps "swresample"
6475
6476 expand_deps(){
6477     lib_deps=${1}_deps
6478     eval "deps=\$$lib_deps"
6479     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6480     unique $lib_deps
6481 }
6482
6483 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6484 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6485
6486 map 'expand_deps $v' $LIBRARY_LIST
6487
6488 echo "install prefix            $prefix"
6489 echo "source path               $source_path"
6490 echo "C compiler                $cc"
6491 echo "C library                 $libc_type"
6492 if test "$host_cc" != "$cc"; then
6493     echo "host C compiler           $host_cc"
6494     echo "host C library            $host_libc_type"
6495 fi
6496 echo "ARCH                      $arch ($cpu)"
6497 if test "$build_suffix" != ""; then
6498     echo "build suffix              $build_suffix"
6499 fi
6500 if test "$progs_suffix" != ""; then
6501     echo "progs suffix              $progs_suffix"
6502 fi
6503 if test "$extra_version" != ""; then
6504     echo "version string suffix     $extra_version"
6505 fi
6506 echo "big-endian                ${bigendian-no}"
6507 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6508 if enabled x86; then
6509     echo "${yasmexe}                      ${yasm-no}"
6510     echo "MMX enabled               ${mmx-no}"
6511     echo "MMXEXT enabled            ${mmxext-no}"
6512     echo "3DNow! enabled            ${amd3dnow-no}"
6513     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6514     echo "SSE enabled               ${sse-no}"
6515     echo "SSSE3 enabled             ${ssse3-no}"
6516     echo "AESNI enabled             ${aesni-no}"
6517     echo "AVX enabled               ${avx-no}"
6518     echo "XOP enabled               ${xop-no}"
6519     echo "FMA3 enabled              ${fma3-no}"
6520     echo "FMA4 enabled              ${fma4-no}"
6521     echo "i686 features enabled     ${i686-no}"
6522     echo "CMOV is fast              ${fast_cmov-no}"
6523     echo "EBX available             ${ebx_available-no}"
6524     echo "EBP available             ${ebp_available-no}"
6525 fi
6526 if enabled aarch64; then
6527     echo "NEON enabled              ${neon-no}"
6528     echo "VFP enabled               ${vfp-no}"
6529 fi
6530 if enabled arm; then
6531     echo "ARMv5TE enabled           ${armv5te-no}"
6532     echo "ARMv6 enabled             ${armv6-no}"
6533     echo "ARMv6T2 enabled           ${armv6t2-no}"
6534     echo "VFP enabled               ${vfp-no}"
6535     echo "NEON enabled              ${neon-no}"
6536     echo "THUMB enabled             ${thumb-no}"
6537 fi
6538 if enabled mips; then
6539     echo "MIPS FPU enabled          ${mipsfpu-no}"
6540     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6541     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6542     echo "MIPS MSA enabled          ${msa-no}"
6543     echo "LOONGSON MMI enabled      ${mmi-no}"
6544 fi
6545 if enabled ppc; then
6546     echo "AltiVec enabled           ${altivec-no}"
6547     echo "VSX enabled               ${vsx-no}"
6548     echo "POWER8 enabled            ${power8-no}"
6549     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6550     echo "dcbzl available           ${dcbzl-no}"
6551 fi
6552 echo "debug symbols             ${debug-no}"
6553 echo "strip symbols             ${stripping-no}"
6554 echo "optimize for size         ${small-no}"
6555 echo "optimizations             ${optimizations-no}"
6556 echo "static                    ${static-no}"
6557 echo "shared                    ${shared-no}"
6558 echo "postprocessing support    ${postproc-no}"
6559 echo "new filter support        ${avfilter-no}"
6560 echo "network support           ${network-no}"
6561 echo "threading support         ${thread_type-no}"
6562 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6563 echo "SDL2 support              ${sdl2-no}"
6564 echo "opencl enabled            ${opencl-no}"
6565 echo "JNI support               ${jni-no}"
6566 echo "texi2html enabled         ${texi2html-no}"
6567 echo "perl enabled              ${perl-no}"
6568 echo "pod2man enabled           ${pod2man-no}"
6569 echo "makeinfo enabled          ${makeinfo-no}"
6570 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6571 test -n "$random_seed" &&
6572     echo "random seed               ${random_seed}"
6573 echo
6574
6575 echo "Enabled programs:"
6576 print_enabled '' $PROGRAM_LIST | print_in_columns
6577 echo
6578
6579 echo "External libraries:"
6580 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_in_columns
6581 echo
6582
6583 echo "External libraries providing hardware acceleration:"
6584 print_enabled '' $HWACCEL_LIBRARY_LIST | print_in_columns
6585 echo
6586
6587 echo "Libraries:"
6588 print_enabled '' $LIBRARY_LIST | print_in_columns
6589 echo
6590
6591 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6592     echo "Enabled ${type}s:"
6593     eval list=\$$(toupper $type)_LIST
6594     print_enabled '_*' $list | print_in_columns
6595     echo
6596 done
6597
6598 license="LGPL version 2.1 or later"
6599 if enabled nonfree; then
6600     license="nonfree and unredistributable"
6601 elif enabled gplv3; then
6602     license="GPL version 3 or later"
6603 elif enabled lgplv3; then
6604     license="LGPL version 3 or later"
6605 elif enabled gpl; then
6606     license="GPL version 2 or later"
6607 fi
6608
6609 echo "License: $license"
6610
6611 echo "Creating config.mak, config.h, and doc/config.texi..."
6612
6613 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6614
6615 enabled stripping || strip="echo skipping strip"
6616
6617 config_files="$TMPH config.mak doc/config.texi"
6618
6619 cat > config.mak <<EOF
6620 # Automatically generated by configure - do not modify!
6621 ifndef FFMPEG_CONFIG_MAK
6622 FFMPEG_CONFIG_MAK=1
6623 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6624 prefix=$prefix
6625 LIBDIR=\$(DESTDIR)$libdir
6626 SHLIBDIR=\$(DESTDIR)$shlibdir
6627 INCDIR=\$(DESTDIR)$incdir
6628 BINDIR=\$(DESTDIR)$bindir
6629 DATADIR=\$(DESTDIR)$datadir
6630 DOCDIR=\$(DESTDIR)$docdir
6631 MANDIR=\$(DESTDIR)$mandir
6632 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6633 INSTALL_NAME_DIR=$install_name_dir
6634 SRC_PATH=$source_path
6635 SRC_LINK=$source_link
6636 ifndef MAIN_MAKEFILE
6637 SRC_PATH:=\$(SRC_PATH:.%=..%)
6638 endif
6639 CC_IDENT=$cc_ident
6640 ARCH=$arch
6641 INTRINSICS=$intrinsics
6642 CC=$cc
6643 CXX=$cxx
6644 AS=$as
6645 OBJCC=$objcc
6646 LD=$ld
6647 DEPCC=$dep_cc
6648 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6649 DEPAS=$as
6650 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6651 YASM=$yasmexe
6652 DEPYASM=$yasmexe
6653 AR=$ar
6654 ARFLAGS=$arflags
6655 AR_O=$ar_o
6656 RANLIB=$ranlib
6657 STRIP=$strip
6658 CP=cp -p
6659 LN_S=$ln_s
6660 CPPFLAGS=$CPPFLAGS
6661 CFLAGS=$CFLAGS
6662 CXXFLAGS=$CXXFLAGS
6663 OBJCFLAGS=$OBJCFLAGS
6664 ASFLAGS=$ASFLAGS
6665 AS_C=$AS_C
6666 AS_O=$AS_O
6667 OBJCC_C=$OBJCC_C
6668 OBJCC_E=$OBJCC_E
6669 OBJCC_O=$OBJCC_O
6670 CC_C=$CC_C
6671 CC_E=$CC_E
6672 CC_O=$CC_O
6673 CXX_C=$CXX_C
6674 CXX_O=$CXX_O
6675 LD_O=$LD_O
6676 LD_LIB=$LD_LIB
6677 LD_PATH=$LD_PATH
6678 DLLTOOL=$dlltool
6679 WINDRES=$windres
6680 DEPWINDRES=$dep_cc
6681 DOXYGEN=$doxygen
6682 LDFLAGS=$LDFLAGS
6683 LDEXEFLAGS=$LDEXEFLAGS
6684 LDLIBFLAGS=$LDLIBFLAGS
6685 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
6686 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
6687 YASMFLAGS=$YASMFLAGS
6688 BUILDSUF=$build_suffix
6689 PROGSSUF=$progs_suffix
6690 FULLNAME=$FULLNAME
6691 LIBPREF=$LIBPREF
6692 LIBSUF=$LIBSUF
6693 LIBNAME=$LIBNAME
6694 SLIBPREF=$SLIBPREF
6695 SLIBSUF=$SLIBSUF
6696 EXESUF=$EXESUF
6697 EXTRA_VERSION=$extra_version
6698 CCDEP=$CCDEP
6699 CXXDEP=$CXXDEP
6700 CCDEP_FLAGS=$CCDEP_FLAGS
6701 ASDEP=$ASDEP
6702 ASDEP_FLAGS=$ASDEP_FLAGS
6703 CC_DEPFLAGS=$CC_DEPFLAGS
6704 AS_DEPFLAGS=$AS_DEPFLAGS
6705 HOSTCC=$host_cc
6706 HOSTLD=$host_ld
6707 HOSTCFLAGS=$host_cflags
6708 HOSTCPPFLAGS=$host_cppflags
6709 HOSTEXESUF=$HOSTEXESUF
6710 HOSTLDFLAGS=$host_ldflags
6711 HOSTLIBS=$host_libs
6712 DEPHOSTCC=$host_cc
6713 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
6714 HOSTCCDEP=$HOSTCCDEP
6715 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
6716 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
6717 HOSTCC_C=$HOSTCC_C
6718 HOSTCC_O=$HOSTCC_O
6719 HOSTLD_O=$HOSTLD_O
6720 TARGET_EXEC=$target_exec $target_exec_args
6721 TARGET_PATH=$target_path
6722 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
6723 CFLAGS-ffplay=${sdl2_cflags}
6724 ZLIB=$($ldflags_filter -lz)
6725 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
6726 EXTRALIBS=$extralibs
6727 COMPAT_OBJS=$compat_objs
6728 EXEOBJS=$exeobjs
6729 INSTALL=$install
6730 LIBTARGET=${LIBTARGET}
6731 SLIBNAME=${SLIBNAME}
6732 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
6733 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
6734 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
6735 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
6736 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
6737 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
6738 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
6739 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
6740 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
6741 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
6742 NOREDZONE_FLAGS=$noredzone_flags
6743 EOF
6744
6745 get_version(){
6746     lcname=lib${1}
6747     name=$(toupper $lcname)
6748     file=$source_path/$lcname/version.h
6749     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
6750     enabled raise_major && eval ${name}_VERSION_MAJOR=$((${name}_VERSION_MAJOR+100))
6751     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
6752     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
6753     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
6754     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
6755 }
6756
6757 map 'get_version $v' $LIBRARY_LIST
6758
6759 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> config.mak' $LIBRARY_LIST
6760
6761 print_program_libs(){
6762     eval "program_libs=\$${1}_libs"
6763     eval echo "LIBS-${1}=${program_libs}" >> config.mak
6764 }
6765
6766 map 'print_program_libs $v' $PROGRAM_LIST
6767
6768 cat > $TMPH <<EOF
6769 /* Automatically generated by configure - do not modify! */
6770 #ifndef FFMPEG_CONFIG_H
6771 #define FFMPEG_CONFIG_H
6772 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
6773 #define FFMPEG_LICENSE "$(c_escape $license)"
6774 #define CONFIG_THIS_YEAR 2017
6775 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
6776 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
6777 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
6778 #define av_restrict $_restrict
6779 #define EXTERN_PREFIX "${extern_prefix}"
6780 #define EXTERN_ASM ${extern_prefix}
6781 #define BUILDSUF "$build_suffix"
6782 #define SLIBSUF "$SLIBSUF"
6783 #define HAVE_MMX2 HAVE_MMXEXT
6784 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
6785 EOF
6786
6787 test -n "$assert_level" &&
6788     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
6789
6790 test -n "$malloc_prefix" &&
6791     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
6792
6793 if enabled yasm; then
6794     append config_files $TMPASM
6795     printf '' >$TMPASM
6796 fi
6797
6798 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
6799
6800
6801 mkdir -p doc
6802 mkdir -p tests
6803 mkdir -p tests/api
6804 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
6805
6806 print_config ARCH_   "$config_files" $ARCH_LIST
6807 print_config HAVE_   "$config_files" $HAVE_LIST
6808 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
6809                                      $CONFIG_EXTRA      \
6810                                      $ALL_COMPONENTS    \
6811
6812 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
6813 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
6814
6815 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
6816 cp_if_changed $TMPH config.h
6817 touch .config
6818
6819 enabled yasm && cp_if_changed $TMPASM config.asm
6820
6821 cat > $TMPH <<EOF
6822 /* Generated by ffconf */
6823 #ifndef AVUTIL_AVCONFIG_H
6824 #define AVUTIL_AVCONFIG_H
6825 EOF
6826
6827 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
6828
6829 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
6830
6831 cp_if_changed $TMPH libavutil/avconfig.h
6832
6833 if test -n "$WARNINGS"; then
6834     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
6835     enabled fatal_warnings && exit 1
6836 fi
6837
6838 # generate the lists of enabled components
6839 print_enabled_components(){
6840     file=$1
6841     struct_name=$2
6842     name=$3
6843     shift 3
6844     echo "static const $struct_name *$name[] = {" > $TMPH
6845     for c in $*; do
6846         enabled $c && printf "    &ff_%s,\n" $c >> $TMPH
6847     done
6848     echo "    NULL };" >> $TMPH
6849     cp_if_changed $TMPH $file
6850 }
6851
6852 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
6853 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
6854
6855 # build pkg-config files
6856
6857 lib_version(){
6858     eval printf "\"lib${1}${build_suffix} >= \$LIB$(toupper ${1})_VERSION, \""
6859 }
6860
6861 pkgconfig_generate(){
6862     name=$1
6863     shortname=${name#lib}${build_suffix}
6864     comment=$2
6865     version=$3
6866     libs=$4
6867     requires=$(map 'lib_version $v' $(eval echo \$${name#lib}_deps))
6868     requires=${requires%, }
6869     enabled ${name#lib} || return 0
6870     mkdir -p $name
6871     cat <<EOF > $name/$name${build_suffix}.pc
6872 prefix=$prefix
6873 exec_prefix=\${prefix}
6874 libdir=$libdir
6875 includedir=$incdir
6876
6877 Name: $name
6878 Description: $comment
6879 Version: $version
6880 Requires: $(enabled shared || echo $requires)
6881 Requires.private: $(enabled shared && echo $requires)
6882 Conflicts:
6883 Libs: -L\${libdir} $(enabled rpath && echo "-Wl,-rpath,\${libdir}") -l${shortname} $(enabled shared || echo $libs)
6884 Libs.private: $(enabled shared && echo $libs)
6885 Cflags: -I\${includedir}
6886 EOF
6887
6888 mkdir -p doc/examples/pc-uninstalled
6889 includedir=${source_path}
6890 [ "$includedir" = . ] && includedir="\${pcfiledir}/../../.."
6891     cat <<EOF > doc/examples/pc-uninstalled/${name}-uninstalled.pc
6892 prefix=
6893 exec_prefix=
6894 libdir=\${pcfiledir}/../../../$name
6895 includedir=${includedir}
6896
6897 Name: $name
6898 Description: $comment
6899 Version: $version
6900 Requires: $requires
6901 Conflicts:
6902 Libs: -L\${libdir} -Wl,-rpath,\${libdir} -l${shortname} $(enabled shared || echo $libs)
6903 Cflags: -I\${includedir}
6904 EOF
6905 }
6906
6907 pkgconfig_generate libavutil     "FFmpeg utility library"               "$LIBAVUTIL_VERSION"     "$LIBRT $LIBM"
6908 pkgconfig_generate libavcodec    "FFmpeg codec library"                 "$LIBAVCODEC_VERSION"    "$extralibs"
6909 pkgconfig_generate libavformat   "FFmpeg container format library"      "$LIBAVFORMAT_VERSION"   "$extralibs"
6910 pkgconfig_generate libavdevice   "FFmpeg device handling library"       "$LIBAVDEVICE_VERSION"   "$extralibs"
6911 pkgconfig_generate libavfilter   "FFmpeg audio/video filtering library" "$LIBAVFILTER_VERSION"   "$extralibs"
6912 pkgconfig_generate libpostproc   "FFmpeg postprocessing library"        "$LIBPOSTPROC_VERSION"   ""
6913 pkgconfig_generate libavresample "Libav audio resampling library"       "$LIBAVRESAMPLE_VERSION" "$LIBM"
6914 pkgconfig_generate libswscale    "FFmpeg image rescaling library"       "$LIBSWSCALE_VERSION"    "$LIBM"
6915 pkgconfig_generate libswresample "FFmpeg audio resampling library"      "$LIBSWRESAMPLE_VERSION" "$LIBM $LIBSOXR"