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