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:$PATH
  58
  59 show_help(){
  60     cat <<EOF
  61 Usage: configure [options]
  62 Options: [defaults in brackets after descriptions]
  63
  64 Help options:
  65   --help                   print this message
  66   --quiet                  Suppress showing informative output
  67   --list-decoders          show all available decoders
  68   --list-encoders          show all available encoders
  69   --list-hwaccels          show all available hardware accelerators
  70   --list-demuxers          show all available demuxers
  71   --list-muxers            show all available muxers
  72   --list-parsers           show all available parsers
  73   --list-protocols         show all available protocols
  74   --list-bsfs              show all available bitstream filters
  75   --list-indevs            show all available input devices
  76   --list-outdevs           show all available output devices
  77   --list-filters           show all available filters
  78
  79 Standard options:
  80   --logfile=FILE           log tests and output to FILE [config.log]
  81   --disable-logging        do not log configure debug information
  82   --fatal-warnings         fail if any configure warning is generated
  83   --prefix=PREFIX          install in PREFIX [$prefix_default]
  84   --bindir=DIR             install binaries in DIR [PREFIX/bin]
  85   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
  86   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
  87   --libdir=DIR             install libs in DIR [PREFIX/lib]
  88   --shlibdir=DIR           install shared libs in DIR [LIBDIR]
  89   --incdir=DIR             install includes in DIR [PREFIX/include]
  90   --mandir=DIR             install man page in DIR [PREFIX/share/man]
  91   --pkgconfigdir=DIR       install pkg-config files in DIR [LIBDIR/pkgconfig]
  92   --enable-rpath           use rpath to allow installing libraries in paths
  93                            not part of the dynamic linker search path
  94                            use rpath when linking programs (USE WITH CARE)
  95   --install-name-dir=DIR   Darwin directory name for installed targets
  96
  97 Licensing options:
  98   --enable-gpl             allow use of GPL code, the resulting libs
  99                            and binaries will be under GPL [no]
 100   --enable-version3        upgrade (L)GPL to version 3 [no]
 101   --enable-nonfree         allow use of nonfree code, the resulting libs
 102                            and binaries will be unredistributable [no]
 103
 104 Configuration options:
 105   --disable-static         do not build static libraries [no]
 106   --enable-shared          build shared libraries [no]
 107   --enable-small           optimize for size instead of speed
 108   --disable-runtime-cpudetect disable detecting CPU capabilities at runtime (smaller binary)
 109   --enable-gray            enable full grayscale support (slower color)
 110   --disable-swscale-alpha  disable alpha channel support in swscale
 111   --disable-all            disable building components, libraries and programs
 112   --enable-raise-major     increase major version numbers in sonames [no]
 113
 114 Program options:
 115   --disable-programs       do not build command line programs
 116   --disable-ffmpeg         disable ffmpeg build
 117   --disable-ffplay         disable ffplay build
 118   --disable-ffprobe        disable ffprobe build
 119   --disable-ffserver       disable ffserver build
 120
 121 Documentation options:
 122   --disable-doc            do not build documentation
 123   --disable-htmlpages      do not build HTML documentation pages
 124   --disable-manpages       do not build man documentation pages
 125   --disable-podpages       do not build POD documentation pages
 126   --disable-txtpages       do not build text documentation pages
 127
 128 Component options:
 129   --disable-avdevice       disable libavdevice build
 130   --disable-avcodec        disable libavcodec build
 131   --disable-avformat       disable libavformat build
 132   --disable-swresample     disable libswresample build
 133   --disable-swscale        disable libswscale build
 134   --disable-postproc       disable libpostproc build
 135   --disable-avfilter       disable libavfilter build
 136   --enable-avresample      enable libavresample build [no]
 137   --disable-pthreads       disable pthreads [autodetect]
 138   --disable-w32threads     disable Win32 threads [autodetect]
 139   --disable-os2threads     disable OS/2 threads [autodetect]
 140   --disable-network        disable network support [no]
 141   --disable-dct            disable DCT code
 142   --disable-dwt            disable DWT code
 143   --disable-error-resilience disable error resilience code
 144   --disable-lsp            disable LSP code
 145   --disable-lzo            disable LZO decoder code
 146   --disable-mdct           disable MDCT code
 147   --disable-rdft           disable RDFT code
 148   --disable-fft            disable FFT code
 149   --disable-faan           disable floating point AAN (I)DCT code
 150   --disable-pixelutils     disable pixel utils in libavutil
 151
 152 Individual component options:
 153   --disable-everything     disable all components listed below
 154   --disable-encoder=NAME   disable encoder NAME
 155   --enable-encoder=NAME    enable encoder NAME
 156   --disable-encoders       disable all encoders
 157   --disable-decoder=NAME   disable decoder NAME
 158   --enable-decoder=NAME    enable decoder NAME
 159   --disable-decoders       disable all decoders
 160   --disable-hwaccel=NAME   disable hwaccel NAME
 161   --enable-hwaccel=NAME    enable hwaccel NAME
 162   --disable-hwaccels       disable all hwaccels
 163   --disable-muxer=NAME     disable muxer NAME
 164   --enable-muxer=NAME      enable muxer NAME
 165   --disable-muxers         disable all muxers
 166   --disable-demuxer=NAME   disable demuxer NAME
 167   --enable-demuxer=NAME    enable demuxer NAME
 168   --disable-demuxers       disable all demuxers
 169   --enable-parser=NAME     enable parser NAME
 170   --disable-parser=NAME    disable parser NAME
 171   --disable-parsers        disable all parsers
 172   --enable-bsf=NAME        enable bitstream filter NAME
 173   --disable-bsf=NAME       disable bitstream filter NAME
 174   --disable-bsfs           disable all bitstream filters
 175   --enable-protocol=NAME   enable protocol NAME
 176   --disable-protocol=NAME  disable protocol NAME
 177   --disable-protocols      disable all protocols
 178   --enable-indev=NAME      enable input device NAME
 179   --disable-indev=NAME     disable input device NAME
 180   --disable-indevs         disable input devices
 181   --enable-outdev=NAME     enable output device NAME
 182   --disable-outdev=NAME    disable output device NAME
 183   --disable-outdevs        disable output devices
 184   --disable-devices        disable all devices
 185   --enable-filter=NAME     enable filter NAME
 186   --disable-filter=NAME    disable filter NAME
 187   --disable-filters        disable all filters
 188
 189 External library support:
 190
 191   Using any of the following switches will allow FFmpeg to link to the
 192   corresponding external library. All the components depending on that library
 193   will become enabled, if all their other dependencies are met and they are not
 194   explicitly disabled. E.g. --enable-libwavpack will enable linking to
 195   libwavpack and allow the libwavpack encoder to be built, unless it is
 196   specifically disabled with --disable-encoder=libwavpack.
 197
 198   Note that only the system libraries are auto-detected. All the other external
 199   libraries must be explicitly enabled.
 200
 201   Also note that the following help text describes the purpose of the libraries
 202   themselves, not all their features will necessarily be usable by FFmpeg.
 203
 204   --enable-avisynth        enable reading of AviSynth script files [no]
 205   --disable-bzlib          disable bzlib [autodetect]
 206   --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
 207   --enable-frei0r          enable frei0r video filtering [no]
 208   --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
 209                            if openssl, librtmp or gmp is not used [no]
 210   --enable-gmp             enable gmp, needed for rtmp(t)e support
 211                            if openssl or librtmp is not used [no]
 212   --enable-gnutls          enable gnutls, needed for https support
 213                            if openssl is not used [no]
 214   --disable-iconv          disable iconv [autodetect]
 215   --enable-jni             enable JNI support [no]
 216   --enable-ladspa          enable LADSPA audio filtering [no]
 217   --enable-libass          enable libass subtitles rendering,
 218                            needed for subtitles and ass filter [no]
 219   --enable-libbluray       enable BluRay reading using libbluray [no]
 220   --enable-libbs2b         enable bs2b DSP library [no]
 221   --enable-libcaca         enable textual display using libcaca [no]
 222   --enable-libcelt         enable CELT decoding via libcelt [no]
 223   --enable-libcdio         enable audio CD grabbing with libcdio [no]
 224   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 225                            and libraw1394 [no]
 226   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 227   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 228   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
 229   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
 230   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
 231   --enable-libgme          enable Game Music Emu via libgme [no]
 232   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 233   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 234   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 235   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
 236   --enable-libmodplug      enable ModPlug via libmodplug [no]
 237   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 238   --enable-libnut          enable NUT (de)muxing via libnut,
 239                            native (de)muxer exists [no]
 240   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 241   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 242   --enable-libopencv       enable video filtering via libopencv [no]
 243   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 244   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 245   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
 246   --enable-libopus         enable Opus de/encoding via libopus [no]
 247   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 248   --enable-librubberband   enable rubberband needed for rubberband filter [no]
 249   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 250   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
 251   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 252   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 253   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
 254   --enable-libsoxr         enable Include libsoxr resampling [no]
 255   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 256   --enable-libssh          enable SFTP protocol via libssh [no]
 257   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
 258   --enable-libtheora       enable Theora encoding via libtheora [no]
 259   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 260   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 261   --enable-libvidstab      enable video stabilization using vid.stab [no]
 262   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 263   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 264                            native implementation exists [no]
 265   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 266   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 267   --enable-libwebp         enable WebP encoding via libwebp [no]
 268   --enable-libx264         enable H.264 encoding via x264 [no]
 269   --enable-libx265         enable HEVC encoding via x265 [no]
 270   --enable-libxavs         enable AVS encoding via xavs [no]
 271   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
 272   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
 273   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
 274   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
 275   --enable-libxvid         enable Xvid encoding via xvidcore,
 276                            native MPEG-4/Xvid encoder exists [no]
 277   --enable-libzimg         enable z.lib, needed for zscale filter [no]
 278   --enable-libzmq          enable message passing via libzmq [no]
 279   --enable-libzvbi         enable teletext support via libzvbi [no]
 280   --disable-lzma           disable lzma [autodetect]
 281   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
 282   --enable-mediacodec      enable Android MediaCodec support [no]
 283   --enable-netcdf          enable NetCDF, needed for sofalizer filter [no]
 284   --enable-openal          enable OpenAL 1.1 capture support [no]
 285   --enable-opencl          enable OpenCL code
 286   --enable-opengl          enable OpenGL rendering [no]
 287   --enable-openssl         enable openssl, needed for https support
 288                            if gnutls is not used [no]
 289   --disable-schannel       disable SChannel SSP, needed for TLS support on
 290                            Windows if openssl and gnutls are not used [autodetect]
 291   --disable-sdl2           disable sdl2 [autodetect]
 292   --disable-securetransport disable Secure Transport, needed for TLS support
 293                            on OSX if openssl and gnutls are not used [autodetect]
 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   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 376
 377 Optimization options (experts only):
 378   --disable-asm            disable all assembly optimizations
 379   --disable-altivec        disable AltiVec optimizations
 380   --disable-vsx            disable VSX optimizations
 381   --disable-power8         disable POWER8 optimizations
 382   --disable-amd3dnow       disable 3DNow! optimizations
 383   --disable-amd3dnowext    disable 3DNow! extended optimizations
 384   --disable-mmx            disable MMX optimizations
 385   --disable-mmxext         disable MMXEXT optimizations
 386   --disable-sse            disable SSE optimizations
 387   --disable-sse2           disable SSE2 optimizations
 388   --disable-sse3           disable SSE3 optimizations
 389   --disable-ssse3          disable SSSE3 optimizations
 390   --disable-sse4           disable SSE4 optimizations
 391   --disable-sse42          disable SSE4.2 optimizations
 392   --disable-avx            disable AVX optimizations
 393   --disable-xop            disable XOP optimizations
 394   --disable-fma3           disable FMA3 optimizations
 395   --disable-fma4           disable FMA4 optimizations
 396   --disable-avx2           disable AVX2 optimizations
 397   --disable-aesni          disable AESNI optimizations
 398   --disable-armv5te        disable armv5te optimizations
 399   --disable-armv6          disable armv6 optimizations
 400   --disable-armv6t2        disable armv6t2 optimizations
 401   --disable-vfp            disable VFP optimizations
 402   --disable-neon           disable NEON optimizations
 403   --disable-inline-asm     disable use of inline assembly
 404   --disable-yasm           disable use of nasm/yasm assembly
 405   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
 406   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 407   --disable-msa            disable MSA optimizations
 408   --disable-mipsfpu        disable floating point MIPS optimizations
 409   --disable-mmi            disable Loongson SIMD optimizations
 410   --disable-fast-unaligned consider unaligned accesses slow
 411
 412 Developer options (useful when working on FFmpeg itself):
 413   --disable-debug          disable debugging symbols
 414   --enable-debug=LEVEL     set the debug level [$debuglevel]
 415   --disable-optimizations  disable compiler optimizations
 416   --enable-extra-warnings  enable more compiler warnings
 417   --disable-stripping      disable stripping of executables and shared libraries
 418   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 419                            2 causes a slowdown at runtime.
 420   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 421   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 422                            leaks and errors, using the specified valgrind binary.
 423                            Cannot be combined with --target-exec
 424   --enable-ftrapv          Trap arithmetic overflows
 425   --samples=PATH           location of test samples for FATE, if not set use
 426                            \$FATE_SAMPLES at make invocation time.
 427   --enable-neon-clobber-test check NEON registers for clobbering (should be
 428                            used only for debugging purposes)
 429   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 430                            should be used only for debugging purposes)
 431   --enable-random          randomly enable/disable components
 432   --disable-random
 433   --enable-random=LIST     randomly enable/disable specific components or
 434   --disable-random=LIST    component groups. LIST is a comma-separated list
 435                            of NAME[:PROB] entries where NAME is a component
 436                            (group) and PROB the probability associated with
 437                            NAME (default 0.5).
 438   --random-seed=VALUE      seed value for --enable/disable-random
 439   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 440                            (only applies to --disable-optimizations builds)
 441
 442 NOTE: Object files are built at the place where configure is launched.
 443 EOF
 444   exit 0
 445 }
 446
 447 quotes='""'
 448 if test -t 1 && which tput >/dev/null 2>&1; then
 449     ncolors=$(tput colors)
 450     if test -n "$ncolors" && test $ncolors -ge 8; then
 451         bold_color=$(tput bold)
 452         warn_color=$(tput setaf 3)
 453         error_color=$(tput setaf 1)
 454         reset_color=$(tput sgr0)
 455     fi
 456     # 72 used instead of 80 since that's the default of pr
 457     ncols=$(tput cols)
 458 fi
 459 : ${ncols:=72}
 460
 461 log(){
 462     echo "$@" >> $logfile
 463 }
 464
 465 log_file(){
 466     log BEGIN $1
 467     pr -n -t $1 >> $logfile
 468     log END $1
 469 }
 470
 471 warn(){
 472     log "WARNING: $*"
 473     WARNINGS="${WARNINGS}WARNING: $*\n"
 474 }
 475
 476 die(){
 477     log "$@"
 478     echo "$error_color$bold_color$@$reset_color"
 479     cat <<EOF
 480
 481 If you think configure made a mistake, make sure you are using the latest
 482 version from Git.  If the latest version fails, report the problem to the
 483 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 484 EOF
 485     if disabled logging; then
 486         cat <<EOF
 487 Rerun configure with logging enabled (do not use --disable-logging), and
 488 include the log this produces with your report.
 489 EOF
 490     else
 491         cat <<EOF
 492 Include the log file "$logfile" produced by configure as this will help
 493 solve the problem.
 494 EOF
 495     fi
 496     exit 1
 497 }
 498
 499 # Avoid locale weirdness, besides we really just want to translate ASCII.
 500 toupper(){
 501     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 502 }
 503
 504 tolower(){
 505     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 506 }
 507
 508 c_escape(){
 509     echo "$*" | sed 's/["\\]/\\\0/g'
 510 }
 511
 512 sh_quote(){
 513     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 514     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 515     echo "$v"
 516 }
 517
 518 cleanws(){
 519     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 520 }
 521
 522 filter(){
 523     pat=$1
 524     shift
 525     for v; do
 526         eval "case $v in $pat) echo $v ;; esac"
 527     done
 528 }
 529
 530 filter_out(){
 531     pat=$1
 532     shift
 533     for v; do
 534         eval "case $v in $pat) ;; *) echo $v ;; esac"
 535     done
 536 }
 537
 538 map(){
 539     m=$1
 540     shift
 541     for v; do eval $m; done
 542 }
 543
 544 add_suffix(){
 545     suffix=$1
 546     shift
 547     for v; do echo ${v}${suffix}; done
 548 }
 549
 550 set_all(){
 551     value=$1
 552     shift
 553     for var in $*; do
 554         eval $var=$value
 555     done
 556 }
 557
 558 set_weak(){
 559     value=$1
 560     shift
 561     for var; do
 562         eval : \${$var:=$value}
 563     done
 564 }
 565
 566 sanitize_var_name(){
 567     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 568 }
 569
 570 set_safe(){
 571     var=$1
 572     shift
 573     eval $(sanitize_var_name "$var")='$*'
 574 }
 575
 576 get_safe(){
 577     eval echo \$$(sanitize_var_name "$1")
 578 }
 579
 580 pushvar(){
 581     for pvar in $*; do
 582         eval level=\${${pvar}_level:=0}
 583         eval ${pvar}_${level}="\$$pvar"
 584         eval ${pvar}_level=$(($level+1))
 585     done
 586 }
 587
 588 popvar(){
 589     for pvar in $*; do
 590         eval level=\${${pvar}_level:-0}
 591         test $level = 0 && continue
 592         eval level=$(($level-1))
 593         eval $pvar="\${${pvar}_${level}}"
 594         eval ${pvar}_level=$level
 595         eval unset ${pvar}_${level}
 596     done
 597 }
 598
 599 request(){
 600     for var in $*; do
 601         eval ${var}_requested=yes
 602         eval $var=
 603     done
 604 }
 605
 606 enable(){
 607     set_all yes $*
 608 }
 609
 610 disable(){
 611     set_all no $*
 612 }
 613
 614 enable_weak(){
 615     set_weak yes $*
 616 }
 617
 618 disable_weak(){
 619     set_weak no $*
 620 }
 621
 622 enable_safe(){
 623     for var; do
 624         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 625     done
 626 }
 627
 628 disable_safe(){
 629     for var; do
 630         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 631     done
 632 }
 633
 634 do_enable_deep(){
 635     for var; do
 636         enabled $var && continue
 637         eval sel="\$${var}_select"
 638         eval sgs="\$${var}_suggest"
 639         pushvar var sgs
 640         enable_deep $sel
 641         popvar sgs
 642         enable_deep_weak $sgs
 643         popvar var
 644     done
 645 }
 646
 647 enable_deep(){
 648     do_enable_deep $*
 649     enable $*
 650 }
 651
 652 enable_deep_weak(){
 653     for var; do
 654         disabled $var && continue
 655         pushvar var
 656         do_enable_deep $var
 657         popvar var
 658         enable_weak $var
 659     done
 660 }
 661
 662 requested(){
 663     test "${1#!}" = "$1" && op='=' || op=!=
 664     eval test "x\$${1#!}_requested" $op "xyes"
 665 }
 666
 667 enabled(){
 668     test "${1#!}" = "$1" && op='=' || op=!=
 669     eval test "x\$${1#!}" $op "xyes"
 670 }
 671
 672 disabled(){
 673     test "${1#!}" = "$1" && op='=' || op=!=
 674     eval test "x\$${1#!}" $op "xno"
 675 }
 676
 677 enabled_all(){
 678     for opt; do
 679         enabled $opt || return 1
 680     done
 681 }
 682
 683 disabled_all(){
 684     for opt; do
 685         disabled $opt || return 1
 686     done
 687 }
 688
 689 enabled_any(){
 690     for opt; do
 691         enabled $opt && return 0
 692     done
 693 }
 694
 695 disabled_any(){
 696     for opt; do
 697         disabled $opt && return 0
 698     done
 699     return 1
 700 }
 701
 702 set_default(){
 703     for opt; do
 704         eval : \${$opt:=\$${opt}_default}
 705     done
 706 }
 707
 708 is_in(){
 709     value=$1
 710     shift
 711     for var in $*; do
 712         [ $var = $value ] && return 0
 713     done
 714     return 1
 715 }
 716
 717 do_check_deps(){
 718     for cfg; do
 719         cfg="${cfg#!}"
 720         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 721         disabled ${cfg}_checking && continue
 722         enable ${cfg}_checking
 723         append allopts $cfg
 724
 725         eval dep_all="\$${cfg}_deps"
 726         eval dep_any="\$${cfg}_deps_any"
 727         eval dep_sel="\$${cfg}_select"
 728         eval dep_sgs="\$${cfg}_suggest"
 729         eval dep_ifa="\$${cfg}_if"
 730         eval dep_ifn="\$${cfg}_if_any"
 731
 732         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 733         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
 734         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 735
 736         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 737         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 738         enabled_all  $dep_all || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not all dependencies are satisfied: $dep_all"; }
 739         enabled_any  $dep_any || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not any dependency is satisfied: $dep_any"; }
 740         disabled_any $dep_sel && { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some selected dependency is unsatisfied: $dep_sel"; }
 741
 742         if enabled $cfg; then
 743             enable_deep $dep_sel
 744             enable_deep_weak $dep_sgs
 745         fi
 746
 747         disable ${cfg}_checking
 748     done
 749 }
 750
 751 check_deps(){
 752     unset allopts
 753
 754     do_check_deps "$@"
 755
 756     for cfg in $allopts; do
 757         enabled $cfg || continue
 758         eval dep_extralibs="\$${cfg}_extralibs"
 759         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
 760     done
 761 }
 762
 763 print_config(){
 764     pfx=$1
 765     files=$2
 766     shift 2
 767     map 'eval echo "$v \${$v:-no}"' "$@" |
 768     awk "BEGIN { split(\"$files\", files) }
 769         {
 770             c = \"$pfx\" toupper(\$1);
 771             v = \$2;
 772             sub(/yes/, 1, v);
 773             sub(/no/,  0, v);
 774             for (f in files) {
 775                 file = files[f];
 776                 if (file ~ /\\.h\$/) {
 777                     printf(\"#define %s %d\\n\", c, v) >>file;
 778                 } else if (file ~ /\\.asm\$/) {
 779                     printf(\"%%define %s %d\\n\", c, v) >>file;
 780                 } else if (file ~ /\\.mak\$/) {
 781                     n = -v ? \"\" : \"!\";
 782                     printf(\"%s%s=yes\\n\", n, c) >>file;
 783                 } else if (file ~ /\\.texi\$/) {
 784                     pre = -v ? \"\" : \"@c \";
 785                     yesno = \$2;
 786                     c2 = tolower(c);
 787                     gsub(/_/, \"-\", c2);
 788                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 789                 }
 790             }
 791         }"
 792 }
 793
 794 print_enabled(){
 795     suf=$1
 796     shift
 797     for v; do
 798         enabled $v && printf "%s\n" ${v%$suf}
 799     done
 800 }
 801
 802 append(){
 803     var=$1
 804     shift
 805     eval "$var=\"\$$var $*\""
 806 }
 807
 808 prepend(){
 809     var=$1
 810     shift
 811     eval "$var=\"$* \$$var\""
 812 }
 813
 814 unique(){
 815     var=$1
 816     uniq_list=""
 817     for tok in $(eval echo \$$var); do
 818         uniq_list="$(filter_out $tok $uniq_list) $tok"
 819     done
 820     eval "$var=\"${uniq_list}\""
 821 }
 822
 823 add_cppflags(){
 824     append CPPFLAGS "$@"
 825 }
 826
 827 add_cflags(){
 828     append CFLAGS $($cflags_filter "$@")
 829 }
 830
 831 add_cxxflags(){
 832     append CXXFLAGS $($cflags_filter "$@")
 833 }
 834
 835 add_asflags(){
 836     append ASFLAGS $($asflags_filter "$@")
 837 }
 838
 839 add_objcflags(){
 840     append OBJCFLAGS $($objcflags_filter "$@")
 841 }
 842
 843 add_ldflags(){
 844     append LDFLAGS $($ldflags_filter "$@")
 845 }
 846
 847 add_ldexeflags(){
 848     append LDEXEFLAGS $($ldflags_filter "$@")
 849 }
 850
 851 add_ldlibflags(){
 852     append LDLIBFLAGS $($ldflags_filter "$@")
 853 }
 854
 855 add_stripflags(){
 856     append ASMSTRIPFLAGS "$@"
 857 }
 858
 859 add_extralibs(){
 860     prepend extralibs $($ldflags_filter "$@")
 861 }
 862
 863 add_host_cppflags(){
 864     append host_cppflags "$@"
 865 }
 866
 867 add_host_cflags(){
 868     append host_cflags $($host_cflags_filter "$@")
 869 }
 870
 871 add_host_ldflags(){
 872     append host_ldflags $($host_ldflags_filter "$@")
 873 }
 874
 875 add_compat(){
 876     append compat_objs $1
 877     shift
 878     map 'add_cppflags -D$v' "$@"
 879 }
 880
 881 check_cmd(){
 882     log "$@"
 883     "$@" >> $logfile 2>&1
 884 }
 885
 886 check_stat(){
 887     log check_stat "$@"
 888     stat "$1" >> $logfile 2>&1
 889 }
 890
 891 cc_o(){
 892     eval printf '%s\\n' $CC_O
 893 }
 894
 895 cc_e(){
 896     eval printf '%s\\n' $CC_E
 897 }
 898
 899 check_cc(){
 900     log check_cc "$@"
 901     cat > $TMPC
 902     log_file $TMPC
 903     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 904 }
 905
 906 check_cxx(){
 907     log check_cxx "$@"
 908     cat > $TMPCPP
 909     log_file $TMPCPP
 910     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 911 }
 912
 913 check_objcc(){
 914     log check_objcc "$@"
 915     cat > $TMPM
 916     log_file $TMPM
 917     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
 918 }
 919
 920 check_cpp(){
 921     log check_cpp "$@"
 922     cat > $TMPC
 923     log_file $TMPC
 924     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 925 }
 926
 927 as_o(){
 928     eval printf '%s\\n' $AS_O
 929 }
 930
 931 check_as(){
 932     log check_as "$@"
 933     cat > $TMPS
 934     log_file $TMPS
 935     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 936 }
 937
 938 check_inline_asm(){
 939     log check_inline_asm "$@"
 940     name="$1"
 941     code="$2"
 942     shift 2
 943     disable $name
 944     check_cc "$@" <<EOF && enable $name
 945 void foo(void){ __asm__ volatile($code); }
 946 EOF
 947 }
 948
 949 check_inline_asm_flags(){
 950     log check_inline_asm_flags "$@"
 951     name="$1"
 952     code="$2"
 953     flags=''
 954     shift 2
 955     while [ "$1" != "" ]; do
 956       append flags $1
 957       shift
 958     done;
 959     disable $name
 960     cat > $TMPC <<EOF
 961 void foo(void){ __asm__ volatile($code); }
 962 EOF
 963     log_file $TMPC
 964     check_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
 965     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
 966 }
 967
 968 check_insn(){
 969     log check_insn "$@"
 970     check_inline_asm ${1}_inline "\"$2\""
 971     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 972 }
 973
 974 check_yasm(){
 975     log check_yasm "$@"
 976     echo "$1" > $TMPS
 977     log_file $TMPS
 978     shift 1
 979     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
 980 }
 981
 982 ld_o(){
 983     eval printf '%s\\n' $LD_O
 984 }
 985
 986 check_ld(){
 987     log check_ld "$@"
 988     type=$1
 989     shift 1
 990     flags=$(filter_out '-l*|*.so' $@)
 991     libs=$(filter '-l*|*.so' $@)
 992     check_$type $($cflags_filter $flags) || return
 993     flags=$($ldflags_filter $flags)
 994     libs=$($ldflags_filter $libs)
 995     check_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
 996 }
 997
 998 print_include(){
 999     hdr=$1
1000     test "${hdr%.h}" = "${hdr}" &&
1001         echo "#include $hdr"    ||
1002         echo "#include <$hdr>"
1003 }
1004
1005 check_code(){
1006     log check_code "$@"
1007     check=$1
1008     headers=$2
1009     code=$3
1010     shift 3
1011     {
1012         for hdr in $headers; do
1013             print_include $hdr
1014         done
1015         echo "int main(void) { $code; return 0; }"
1016     } | check_$check "$@"
1017 }
1018
1019 check_cppflags(){
1020     log check_cppflags "$@"
1021     check_cpp "$@" <<EOF && append CPPFLAGS "$@"
1022 int x;
1023 EOF
1024 }
1025
1026 test_cflags(){
1027     log test_cflags "$@"
1028     set -- $($cflags_filter "$@")
1029     check_cc "$@" <<EOF
1030 int x;
1031 EOF
1032 }
1033
1034 check_cflags(){
1035     log check_cflags "$@"
1036     test_cflags "$@" && add_cflags "$@"
1037 }
1038
1039 check_cxxflags(){
1040     log check_cxxflags "$@"
1041     set -- $($cflags_filter "$@")
1042     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
1043 int x;
1044 EOF
1045 }
1046
1047 test_objcflags(){
1048     log test_objcflags "$@"
1049     set -- $($objcflags_filter "$@")
1050     check_objcc "$@" <<EOF
1051 int x;
1052 EOF
1053 }
1054
1055 check_objcflags(){
1056     log check_objcflags "$@"
1057     test_objcflags "$@" && add_objcflags "$@"
1058 }
1059
1060 test_ldflags(){
1061     log test_ldflags "$@"
1062     check_ld "cc" "$@" <<EOF
1063 int main(void){ return 0; }
1064 EOF
1065 }
1066
1067 check_ldflags(){
1068     log check_ldflags "$@"
1069     test_ldflags "$@" && add_ldflags "$@"
1070 }
1071
1072 test_stripflags(){
1073     log test_stripflags "$@"
1074     # call check_cc to get a fresh TMPO
1075     check_cc <<EOF
1076 int main(void) { return 0; }
1077 EOF
1078     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1079 }
1080
1081 check_stripflags(){
1082     log check_stripflags "$@"
1083     test_stripflags "$@" && add_stripflags "$@"
1084 }
1085
1086 check_header(){
1087     log check_header "$@"
1088     header=$1
1089     shift
1090     disable_safe $header
1091     check_cpp "$@" <<EOF && enable_safe $header
1092 #include <$header>
1093 int x;
1094 EOF
1095 }
1096
1097 check_header_objcc(){
1098     log check_header_objcc "$@"
1099     rm -f -- "$TMPO"
1100     header=$1
1101     shift
1102     disable_safe $header
1103     {
1104        echo "#include <$header>"
1105        echo "int main(void) { return 0; }"
1106     } | check_objcc && check_stat "$TMPO" && enable_safe $headers
1107 }
1108
1109 check_func(){
1110     log check_func "$@"
1111     func=$1
1112     shift
1113     disable $func
1114     check_ld "cc" "$@" <<EOF && enable $func
1115 extern int $func();
1116 int main(void){ $func(); }
1117 EOF
1118 }
1119
1120 check_complexfunc(){
1121     log check_complexfunc "$@"
1122     func=$1
1123     narg=$2
1124     shift 2
1125     test $narg = 2 && args="f, g" || args="f * I"
1126     disable $func
1127     check_ld "cc" "$@" <<EOF && enable $func
1128 #include <complex.h>
1129 #include <math.h>
1130 float foo(complex float f, complex float g) { return $func($args); }
1131 int main(void){ return (int) foo; }
1132 EOF
1133 }
1134
1135 check_mathfunc(){
1136     log check_mathfunc "$@"
1137     func=$1
1138     narg=$2
1139     shift 2
1140     test $narg = 2 && args="f, g" || args="f"
1141     disable $func
1142     check_ld "cc" "$@" <<EOF && enable $func
1143 #include <math.h>
1144 float foo(float f, float g) { return $func($args); }
1145 int main(void){ return (int) foo; }
1146 EOF
1147 }
1148
1149 check_func_headers(){
1150     log check_func_headers "$@"
1151     headers=$1
1152     funcs=$2
1153     shift 2
1154     {
1155         for hdr in $headers; do
1156             print_include $hdr
1157         done
1158         echo "#include <stdint.h>"
1159         for func in $funcs; do
1160             echo "long check_$func(void) { return (long) $func; }"
1161         done
1162         echo "int main(void) { int ret = 0;"
1163         # LTO could optimize out the test functions without this
1164         for func in $funcs; do
1165             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1166         done
1167         echo "return ret; }"
1168     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1169 }
1170
1171 check_class_headers_cpp(){
1172     log check_class_headers_cpp "$@"
1173     headers=$1
1174     classes=$2
1175     shift 2
1176     {
1177         for hdr in $headers; do
1178             echo "#include <$hdr>"
1179         done
1180         echo "int main(void) { "
1181         i=1
1182         for class in $classes; do
1183             echo "$class obj$i;"
1184             i=$(expr $i + 1)
1185         done
1186         echo "return 0; }"
1187     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1188 }
1189
1190 check_cpp_condition(){
1191     log check_cpp_condition "$@"
1192     header=$1
1193     condition=$2
1194     shift 2
1195     check_cpp "$@" <<EOF
1196 #include <$header>
1197 #if !($condition)
1198 #error "unsatisfied condition: $condition"
1199 #endif
1200 EOF
1201 }
1202
1203 test_cflags_cc(){
1204     log test_cflags_cc "$@"
1205     flags=$1
1206     header=$2
1207     condition=$3
1208     shift 3
1209     set -- $($cflags_filter "$flags")
1210     check_cc "$@" <<EOF
1211 #include <$header>
1212 #if !($condition)
1213 #error "unsatisfied condition: $condition"
1214 #endif
1215 EOF
1216 }
1217
1218 check_lib(){
1219     log check_lib "$@"
1220     headers="$1"
1221     funcs="$2"
1222     shift 2
1223     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1224 }
1225
1226 check_lib_cpp(){
1227     log check_lib_cpp "$@"
1228     headers="$1"
1229     classes="$2"
1230     shift 2
1231     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1232 }
1233
1234 check_pkg_config(){
1235     log check_pkg_config "$@"
1236     pkgandversion="$1"
1237     pkg="${1%% *}"
1238     headers="$2"
1239     funcs="$3"
1240     shift 3
1241     check_cmd $pkg_config --exists --print-errors $pkgandversion || return
1242     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1243     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1244     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1245         set_safe "${pkg}_cflags" $pkg_cflags   &&
1246         set_safe "${pkg}_libs"   $pkg_libs
1247 }
1248
1249 check_exec(){
1250     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1251 }
1252
1253 check_exec_crash(){
1254     log check_exec_crash "$@"
1255     code=$(cat)
1256
1257     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1258     # are safe but may not be available everywhere.  Thus we use
1259     # raise(SIGTERM) instead.  The check is run in a subshell so we
1260     # can redirect the "Terminated" message from the shell.  SIGBUS
1261     # is not defined by standard C so it is used conditionally.
1262
1263     (check_exec "$@") >> $logfile 2>&1 <<EOF
1264 #include <signal.h>
1265 static void sighandler(int sig){
1266     raise(SIGTERM);
1267 }
1268 int foo(void){
1269     $code
1270 }
1271 int (*func_ptr)(void) = foo;
1272 int main(void){
1273     signal(SIGILL, sighandler);
1274     signal(SIGFPE, sighandler);
1275     signal(SIGSEGV, sighandler);
1276 #ifdef SIGBUS
1277     signal(SIGBUS, sighandler);
1278 #endif
1279     return func_ptr();
1280 }
1281 EOF
1282 }
1283
1284 check_type(){
1285     log check_type "$@"
1286     headers=$1
1287     type=$2
1288     shift 2
1289     disable_safe "$type"
1290     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1291 }
1292
1293 check_struct(){
1294     log check_struct "$@"
1295     headers=$1
1296     struct=$2
1297     member=$3
1298     shift 3
1299     disable_safe "${struct}_${member}"
1300     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1301         enable_safe "${struct}_${member}"
1302 }
1303
1304 check_builtin(){
1305     log check_builtin "$@"
1306     name=$1
1307     headers=$2
1308     builtin=$3
1309     shift 3
1310     disable "$name"
1311     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1312 }
1313
1314 check_compile_assert(){
1315     log check_compile_assert "$@"
1316     name=$1
1317     headers=$2
1318     condition=$3
1319     shift 3
1320     disable "$name"
1321     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1322 }
1323
1324 require(){
1325     log require "$@"
1326     name="$1"
1327     headers="$2"
1328     func="$3"
1329     shift 3
1330     check_lib "$headers" $func "$@" || die "ERROR: $name not found"
1331 }
1332
1333 require_cpp(){
1334     name="$1"
1335     headers="$2"
1336     classes="$3"
1337     shift 3
1338     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1339 }
1340
1341 use_pkg_config(){
1342     log use_pkg_config "$@"
1343     pkg="$1"
1344     check_pkg_config "$@" || return 1
1345     add_cflags    $(get_safe "${pkg}_cflags")
1346     add_extralibs $(get_safe "${pkg}_libs")
1347 }
1348
1349 require_pkg_config(){
1350     use_pkg_config "$@" || die "ERROR: $pkg not found using pkg-config$pkg_config_fail_message"
1351 }
1352
1353 require_libfreetype(){
1354     log require_libfreetype "$@"
1355     pkg="freetype2"
1356     check_cmd $pkg_config --exists --print-errors $pkg \
1357       || die "ERROR: $pkg not found"
1358     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1359     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1360     {
1361         echo "#include <ft2build.h>"
1362         echo "#include FT_FREETYPE_H"
1363         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1364         echo "int main(void) { return 0; }"
1365     } | check_ld "cc" $pkg_cflags $pkg_libs \
1366       && set_safe "${pkg}_cflags" $pkg_cflags \
1367       && set_safe "${pkg}_libs"   $pkg_libs \
1368       || die "ERROR: $pkg not found"
1369     add_cflags    $(get_safe "${pkg}_cflags")
1370     add_extralibs $(get_safe "${pkg}_libs")
1371 }
1372
1373 hostcc_e(){
1374     eval printf '%s\\n' $HOSTCC_E
1375 }
1376
1377 hostcc_o(){
1378     eval printf '%s\\n' $HOSTCC_O
1379 }
1380
1381 check_host_cc(){
1382     log check_host_cc "$@"
1383     cat > $TMPC
1384     log_file $TMPC
1385     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1386 }
1387
1388 check_host_cpp(){
1389     log check_host_cpp "$@"
1390     cat > $TMPC
1391     log_file $TMPC
1392     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1393 }
1394
1395 check_host_cppflags(){
1396     log check_host_cppflags "$@"
1397     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1398 int x;
1399 EOF
1400 }
1401
1402 check_host_cflags(){
1403     log check_host_cflags "$@"
1404     set -- $($host_cflags_filter "$@")
1405     check_host_cc "$@" <<EOF && append host_cflags "$@"
1406 int x;
1407 EOF
1408 }
1409
1410 check_host_cpp_condition(){
1411     log check_host_cpp_condition "$@"
1412     header=$1
1413     condition=$2
1414     shift 2
1415     check_host_cpp "$@" <<EOF
1416 #include <$header>
1417 #if !($condition)
1418 #error "unsatisfied condition: $condition"
1419 #endif
1420 EOF
1421 }
1422
1423 cp_if_changed(){
1424     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1425     mkdir -p "$(dirname $2)"
1426     $cp_f "$1" "$2"
1427 }
1428
1429 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1430 # system-dependent things.
1431
1432 AVCODEC_COMPONENTS="
1433     bsfs
1434     decoders
1435     encoders
1436     hwaccels
1437     parsers
1438 "
1439
1440 AVDEVICE_COMPONENTS="
1441     indevs
1442     outdevs
1443 "
1444 AVFILTER_COMPONENTS="
1445     filters
1446 "
1447 AVFORMAT_COMPONENTS="
1448     demuxers
1449     muxers
1450     protocols
1451 "
1452
1453 AVRESAMPLE_COMPONENTS=""
1454 AVUTIL_COMPONENTS=""
1455
1456 COMPONENT_LIST="
1457     $AVCODEC_COMPONENTS
1458     $AVDEVICE_COMPONENTS
1459     $AVFILTER_COMPONENTS
1460     $AVFORMAT_COMPONENTS
1461     $AVRESAMPLE_COMPONENTS
1462     $AVUTIL_COMPONENTS
1463 "
1464
1465 EXAMPLE_LIST="
1466     avio_dir_cmd_example
1467     avio_reading_example
1468     decode_audio_example
1469     decode_video_example
1470     demuxing_decoding_example
1471     encode_audio_example
1472     encode_video_example
1473     extract_mvs_example
1474     filter_audio_example
1475     filtering_audio_example
1476     filtering_video_example
1477     http_multiclient_example
1478     metadata_example
1479     muxing_example
1480     qsvdec_example
1481     remuxing_example
1482     resampling_audio_example
1483     scaling_video_example
1484     transcode_aac_example
1485     transcoding_example
1486 "
1487 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1488     bzlib
1489     iconv
1490     libxcb
1491     libxcb_shm
1492     libxcb_shape
1493     libxcb_xfixes
1494     lzma
1495     schannel
1496     sdl
1497     sdl2
1498     securetransport
1499     xlib
1500     zlib
1501 "
1502
1503 EXTERNAL_LIBRARY_GPL_LIST="
1504     avisynth
1505     frei0r
1506     libcdio
1507     librubberband
1508     libvidstab
1509     libx264
1510     libx265
1511     libxavs
1512     libxvid
1513 "
1514
1515 EXTERNAL_LIBRARY_NONFREE_LIST="
1516     libfdk_aac
1517     openssl
1518 "
1519
1520 EXTERNAL_LIBRARY_VERSION3_LIST="
1521     gmp
1522     libopencore_amrnb
1523     libopencore_amrwb
1524     libvo_amrwbenc
1525 "
1526
1527 EXTERNAL_LIBRARY_GPLV3_LIST="
1528     libsmbclient
1529 "
1530
1531 EXTERNAL_LIBRARY_LIST="
1532     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1533     $EXTERNAL_LIBRARY_GPL_LIST
1534     $EXTERNAL_LIBRARY_NONFREE_LIST
1535     $EXTERNAL_LIBRARY_VERSION3_LIST
1536     $EXTERNAL_LIBRARY_GPLV3_LIST
1537     chromaprint
1538     crystalhd
1539     decklink
1540     gcrypt
1541     gnutls
1542     jni
1543     ladspa
1544     libass
1545     libbluray
1546     libbs2b
1547     libcaca
1548     libcelt
1549     libdc1394
1550     libflite
1551     libfontconfig
1552     libfreetype
1553     libfribidi
1554     libgme
1555     libgsm
1556     libiec61883
1557     libilbc
1558     libkvazaar
1559     libmodplug
1560     libmp3lame
1561     libnut
1562     libopencv
1563     libopenh264
1564     libopenjpeg
1565     libopenmpt
1566     libopus
1567     libpulse
1568     librtmp
1569     libschroedinger
1570     libshine
1571     libsmbclient
1572     libsnappy
1573     libsoxr
1574     libspeex
1575     libssh
1576     libtesseract
1577     libtheora
1578     libtwolame
1579     libv4l2
1580     libvorbis
1581     libvpx
1582     libwavpack
1583     libwebp
1584     libzimg
1585     libzmq
1586     libzvbi
1587     mediacodec
1588     netcdf
1589     openal
1590     opencl
1591     opengl
1592     videotoolbox
1593 "
1594 HWACCEL_AUTODETECT_LIBRARY_LIST="
1595     audiotoolbox
1596     cuda
1597     cuvid
1598     d3d11va
1599     dxva2
1600     nvenc
1601     vaapi
1602     vda
1603     vdpau
1604     videotoolbox_hwaccel
1605     xvmc
1606 "
1607
1608 HWACCEL_LIBRARY_NONFREE_LIST="
1609     libnpp
1610 "
1611
1612 HWACCEL_LIBRARY_LIST="
1613     $HWACCEL_AUTODETECT_LIBRARY_LIST
1614     $HWACCEL_LIBRARY_NONFREE_LIST
1615     libmfx
1616     mmal
1617     omx
1618 "
1619
1620 DOCUMENT_LIST="
1621     doc
1622     htmlpages
1623     manpages
1624     podpages
1625     txtpages
1626 "
1627
1628 FEATURE_LIST="
1629     ftrapv
1630     gray
1631     hardcoded_tables
1632     omx_rpi
1633     runtime_cpudetect
1634     safe_bitstream_reader
1635     shared
1636     small
1637     static
1638     swscale_alpha
1639 "
1640
1641 LIBRARY_LIST="
1642     avcodec
1643     avdevice
1644     avfilter
1645     avformat
1646     avresample
1647     avutil
1648     postproc
1649     swresample
1650     swscale
1651 "
1652
1653 LICENSE_LIST="
1654     gpl
1655     nonfree
1656     version3
1657 "
1658
1659 PROGRAM_LIST="
1660     ffplay
1661     ffprobe
1662     ffserver
1663     ffmpeg
1664 "
1665
1666 SUBSYSTEM_LIST="
1667     dct
1668     dwt
1669     error_resilience
1670     faan
1671     fast_unaligned
1672     fft
1673     lsp
1674     lzo
1675     mdct
1676     pixelutils
1677     network
1678     rdft
1679 "
1680
1681 CONFIG_LIST="
1682     $COMPONENT_LIST
1683     $DOCUMENT_LIST
1684     $EXAMPLE_LIST
1685     $EXTERNAL_LIBRARY_LIST
1686     $HWACCEL_LIBRARY_LIST
1687     $FEATURE_LIST
1688     $LICENSE_LIST
1689     $LIBRARY_LIST
1690     $PROGRAM_LIST
1691     $SUBSYSTEM_LIST
1692     fontconfig
1693     memory_poisoning
1694     neon_clobber_test
1695     pic
1696     raise_major
1697     thumb
1698     valgrind_backtrace
1699     xmm_clobber_test
1700 "
1701
1702 THREADS_LIST="
1703     pthreads
1704     os2threads
1705     w32threads
1706 "
1707
1708 ATOMICS_LIST="
1709     atomics_gcc
1710     atomics_suncc
1711     atomics_win32
1712 "
1713
1714 AUTODETECT_LIBS="
1715     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1716     $HWACCEL_AUTODETECT_LIBRARY_LIST
1717     $THREADS_LIST
1718 "
1719
1720 ARCH_LIST="
1721     aarch64
1722     alpha
1723     arm
1724     avr32
1725     avr32_ap
1726     avr32_uc
1727     bfin
1728     ia64
1729     m68k
1730     mips
1731     mips64
1732     parisc
1733     ppc
1734     ppc64
1735     s390
1736     sh4
1737     sparc
1738     sparc64
1739     tilegx
1740     tilepro
1741     tomi
1742     x86
1743     x86_32
1744     x86_64
1745 "
1746
1747 ARCH_EXT_LIST_ARM="
1748     armv5te
1749     armv6
1750     armv6t2
1751     armv8
1752     neon
1753     vfp
1754     vfpv3
1755     setend
1756 "
1757
1758 ARCH_EXT_LIST_MIPS="
1759     mipsfpu
1760     mips32r2
1761     mips32r5
1762     mips64r2
1763     mips32r6
1764     mips64r6
1765     mipsdsp
1766     mipsdspr2
1767     msa
1768 "
1769
1770 ARCH_EXT_LIST_LOONGSON="
1771     loongson2
1772     loongson3
1773     mmi
1774 "
1775
1776 ARCH_EXT_LIST_X86_SIMD="
1777     aesni
1778     amd3dnow
1779     amd3dnowext
1780     avx
1781     avx2
1782     fma3
1783     fma4
1784     mmx
1785     mmxext
1786     sse
1787     sse2
1788     sse3
1789     sse4
1790     sse42
1791     ssse3
1792     xop
1793 "
1794
1795 ARCH_EXT_LIST_PPC="
1796     altivec
1797     dcbzl
1798     ldbrx
1799     power8
1800     ppc4xx
1801     vsx
1802 "
1803
1804 ARCH_EXT_LIST_X86="
1805     $ARCH_EXT_LIST_X86_SIMD
1806     cpunop
1807     i686
1808 "
1809
1810 ARCH_EXT_LIST="
1811     $ARCH_EXT_LIST_ARM
1812     $ARCH_EXT_LIST_PPC
1813     $ARCH_EXT_LIST_X86
1814     $ARCH_EXT_LIST_MIPS
1815     $ARCH_EXT_LIST_LOONGSON
1816 "
1817
1818 ARCH_FEATURES="
1819     aligned_stack
1820     fast_64bit
1821     fast_clz
1822     fast_cmov
1823     local_aligned_8
1824     local_aligned_16
1825     local_aligned_32
1826     simd_align_16
1827     simd_align_32
1828 "
1829
1830 BUILTIN_LIST="
1831     atomic_cas_ptr
1832     machine_rw_barrier
1833     MemoryBarrier
1834     mm_empty
1835     rdtsc
1836     sarestart
1837     sem_timedwait
1838     sync_val_compare_and_swap
1839 "
1840 HAVE_LIST_CMDLINE="
1841     inline_asm
1842     symver
1843     yasm
1844 "
1845
1846 HAVE_LIST_PUB="
1847     bigendian
1848     fast_unaligned
1849 "
1850
1851 HEADERS_LIST="
1852     alsa_asoundlib_h
1853     altivec_h
1854     arpa_inet_h
1855     asm_types_h
1856     cdio_paranoia_h
1857     cdio_paranoia_paranoia_h
1858     cuda_h
1859     dispatch_dispatch_h
1860     dev_bktr_ioctl_bt848_h
1861     dev_bktr_ioctl_meteor_h
1862     dev_ic_bt8xx_h
1863     dev_video_bktr_ioctl_bt848_h
1864     dev_video_meteor_ioctl_meteor_h
1865     direct_h
1866     dirent_h
1867     dlfcn_h
1868     d3d11_h
1869     dxva_h
1870     ES2_gl_h
1871     gsm_h
1872     io_h
1873     mach_mach_time_h
1874     machine_ioctl_bt848_h
1875     machine_ioctl_meteor_h
1876     malloc_h
1877     opencv2_core_core_c_h
1878     openjpeg_2_1_openjpeg_h
1879     openjpeg_2_0_openjpeg_h
1880     openjpeg_1_5_openjpeg_h
1881     OpenGL_gl3_h
1882     poll_h
1883     sndio_h
1884     soundcard_h
1885     stdatomic_h
1886     sys_mman_h
1887     sys_param_h
1888     sys_resource_h
1889     sys_select_h
1890     sys_soundcard_h
1891     sys_time_h
1892     sys_un_h
1893     sys_videoio_h
1894     termios_h
1895     udplite_h
1896     unistd_h
1897     valgrind_valgrind_h
1898     windows_h
1899     winsock2_h
1900 "
1901
1902 INTRINSICS_LIST="
1903     intrinsics_neon
1904 "
1905
1906 COMPLEX_FUNCS="
1907     cabs
1908     cexp
1909 "
1910
1911 MATH_FUNCS="
1912     atanf
1913     atan2f
1914     cbrt
1915     cbrtf
1916     copysign
1917     cosf
1918     erf
1919     exp2
1920     exp2f
1921     expf
1922     hypot
1923     isfinite
1924     isinf
1925     isnan
1926     ldexpf
1927     llrint
1928     llrintf
1929     log2
1930     log2f
1931     log10f
1932     lrint
1933     lrintf
1934     powf
1935     rint
1936     round
1937     roundf
1938     sinf
1939     trunc
1940     truncf
1941 "
1942
1943 SYSTEM_FUNCS="
1944     access
1945     aligned_malloc
1946     arc4random
1947     clock_gettime
1948     closesocket
1949     CommandLineToArgvW
1950     CoTaskMemFree
1951     CryptGenRandom
1952     dlopen
1953     fcntl
1954     flt_lim
1955     fork
1956     getaddrinfo
1957     gethrtime
1958     getopt
1959     GetProcessAffinityMask
1960     GetProcessMemoryInfo
1961     GetProcessTimes
1962     getrusage
1963     GetSystemTimeAsFileTime
1964     gettimeofday
1965     glob
1966     glXGetProcAddress
1967     gmtime_r
1968     inet_aton
1969     isatty
1970     jack_port_get_latency_range
1971     kbhit
1972     LoadLibrary
1973     localtime_r
1974     lstat
1975     lzo1x_999_compress
1976     mach_absolute_time
1977     MapViewOfFile
1978     memalign
1979     mkstemp
1980     mmap
1981     mprotect
1982     nanosleep
1983     PeekNamedPipe
1984     posix_memalign
1985     pthread_cancel
1986     sched_getaffinity
1987     SetConsoleTextAttribute
1988     SetConsoleCtrlHandler
1989     setmode
1990     setrlimit
1991     Sleep
1992     strerror_r
1993     sysconf
1994     sysctl
1995     usleep
1996     UTGetOSTypeFromString
1997     VirtualAlloc
1998     wglGetProcAddress
1999 "
2000
2001 TOOLCHAIN_FEATURES="
2002     as_dn_directive
2003     as_fpu_directive
2004     as_func
2005     as_object_arch
2006     asm_mod_q
2007     attribute_may_alias
2008     attribute_packed
2009     ebp_available
2010     ebx_available
2011     gnu_as
2012     gnu_windres
2013     ibm_asm
2014     inline_asm_direct_symbol_refs
2015     inline_asm_labels
2016     inline_asm_nonlocal_labels
2017     pragma_deprecated
2018     rsync_contimeout
2019     symver_asm_label
2020     symver_gnu_asm
2021     vfp_args
2022     xform_asm
2023     xmm_clobbers
2024 "
2025
2026 TYPES_LIST="
2027     CONDITION_VARIABLE_Ptr
2028     socklen_t
2029     struct_addrinfo
2030     struct_group_source_req
2031     struct_ip_mreq_source
2032     struct_ipv6_mreq
2033     struct_msghdr_msg_flags
2034     struct_pollfd
2035     struct_rusage_ru_maxrss
2036     struct_sctp_event_subscribe
2037     struct_sockaddr_in6
2038     struct_sockaddr_sa_len
2039     struct_sockaddr_storage
2040     struct_stat_st_mtim_tv_nsec
2041     struct_v4l2_frmivalenum_discrete
2042 "
2043
2044 HAVE_LIST="
2045     $ARCH_EXT_LIST
2046     $(add_suffix _external $ARCH_EXT_LIST)
2047     $(add_suffix _inline   $ARCH_EXT_LIST)
2048     $ARCH_FEATURES
2049     $ATOMICS_LIST
2050     $BUILTIN_LIST
2051     $COMPLEX_FUNCS
2052     $HAVE_LIST_CMDLINE
2053     $HAVE_LIST_PUB
2054     $HEADERS_LIST
2055     $INTRINSICS_LIST
2056     $MATH_FUNCS
2057     $SYSTEM_FUNCS
2058     $THREADS_LIST
2059     $TOOLCHAIN_FEATURES
2060     $TYPES_LIST
2061     atomics_native
2062     dos_paths
2063     dxva2_lib
2064     dxva2api_cobj
2065     libc_msvcrt
2066     libdc1394_1
2067     libdc1394_2
2068     makeinfo
2069     makeinfo_html
2070     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2071     perl
2072     pod2man
2073     sdl2
2074     section_data_rel_ro
2075     texi2html
2076     threads
2077     vaapi_drm
2078     vaapi_x11
2079     vdpau_x11
2080     winrt
2081     xlib
2082 "
2083
2084 # options emitted with CONFIG_ prefix but not available on the command line
2085 CONFIG_EXTRA="
2086     aandcttables
2087     ac3dsp
2088     audio_frame_queue
2089     audiodsp
2090     blockdsp
2091     bswapdsp
2092     cabac
2093     dirac_parse
2094     dvprofile
2095     exif
2096     faandct
2097     faanidct
2098     fdctdsp
2099     flacdsp
2100     fmtconvert
2101     frame_thread_encoder
2102     g722dsp
2103     golomb
2104     gplv3
2105     h263dsp
2106     h264chroma
2107     h264dsp
2108     h264parse
2109     h264pred
2110     h264qpel
2111     hpeldsp
2112     huffman
2113     huffyuvdsp
2114     huffyuvencdsp
2115     idctdsp
2116     iirfilter
2117     mdct15
2118     intrax8
2119     iso_media
2120     ividsp
2121     jpegtables
2122     lgplv3
2123     libx262
2124     llauddsp
2125     llviddsp
2126     llvidencdsp
2127     lpc
2128     lzf
2129     me_cmp
2130     mpeg_er
2131     mpegaudio
2132     mpegaudiodsp
2133     mpegvideo
2134     mpegvideoenc
2135     mss34dsp
2136     pixblockdsp
2137     qpeldsp
2138     qsv
2139     qsvdec
2140     qsvenc
2141     rangecoder
2142     riffdec
2143     riffenc
2144     rtpdec
2145     rtpenc_chain
2146     rv34dsp
2147     sinewin
2148     snappy
2149     srtp
2150     startcode
2151     texturedsp
2152     texturedspenc
2153     tpeldsp
2154     vaapi_encode
2155     vc1dsp
2156     videodsp
2157     vp3dsp
2158     vp56dsp
2159     vp8dsp
2160     vt_bt2020
2161     wma_freqs
2162     wmv2dsp
2163 "
2164
2165 CMDLINE_SELECT="
2166     $ARCH_EXT_LIST
2167     $CONFIG_LIST
2168     $HAVE_LIST_CMDLINE
2169     $THREADS_LIST
2170     asm
2171     cross_compile
2172     debug
2173     extra_warnings
2174     logging
2175     lto
2176     optimizations
2177     rpath
2178     stripping
2179 "
2180
2181 PATHS_LIST="
2182     bindir
2183     datadir
2184     docdir
2185     incdir
2186     libdir
2187     mandir
2188     pkgconfigdir
2189     prefix
2190     shlibdir
2191     install_name_dir
2192 "
2193
2194 CMDLINE_SET="
2195     $PATHS_LIST
2196     ar
2197     arch
2198     as
2199     assert_level
2200     build_suffix
2201     cc
2202     objcc
2203     cpu
2204     cross_prefix
2205     custom_allocator
2206     cxx
2207     dep_cc
2208     doxygen
2209     env
2210     extra_version
2211     gas
2212     host_cc
2213     host_cflags
2214     host_ld
2215     host_ldflags
2216     host_libs
2217     host_os
2218     install
2219     ld
2220     ln_s
2221     logfile
2222     malloc_prefix
2223     nm
2224     optflags
2225     pkg_config
2226     pkg_config_flags
2227     progs_suffix
2228     random_seed
2229     ranlib
2230     samples
2231     strip
2232     sws_max_filter_size
2233     sysinclude
2234     sysroot
2235     target_exec
2236     target_os
2237     target_path
2238     target_samples
2239     tempprefix
2240     toolchain
2241     valgrind
2242     yasmexe
2243 "
2244
2245 CMDLINE_APPEND="
2246     extra_cflags
2247     extra_cxxflags
2248     extra_objcflags
2249     host_cppflags
2250 "
2251
2252 # code dependency declarations
2253
2254 # architecture extensions
2255
2256 armv5te_deps="arm"
2257 armv6_deps="arm"
2258 armv6t2_deps="arm"
2259 armv8_deps="aarch64"
2260 neon_deps_any="aarch64 arm"
2261 intrinsics_neon_deps="neon"
2262 vfp_deps_any="aarch64 arm"
2263 vfpv3_deps="vfp"
2264 setend_deps="arm"
2265
2266 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2267
2268 loongson2_deps="mips"
2269 loongson3_deps="mips"
2270 mipsfpu_deps="mips"
2271 mipsdsp_deps="mips"
2272 mipsdspr2_deps="mips"
2273 mips32r2_deps="mips"
2274 mips32r5_deps="mips"
2275 mips32r6_deps="mips"
2276 mips64r2_deps="mips"
2277 mips64r6_deps="mips"
2278 msa_deps="mipsfpu"
2279 mmi_deps="mips"
2280
2281 altivec_deps="ppc"
2282 dcbzl_deps="ppc"
2283 ldbrx_deps="ppc"
2284 ppc4xx_deps="ppc"
2285 vsx_deps="altivec"
2286 power8_deps="vsx"
2287
2288 cpunop_deps="i686"
2289 x86_64_select="i686"
2290 x86_64_suggest="fast_cmov"
2291
2292 amd3dnow_deps="mmx"
2293 amd3dnowext_deps="amd3dnow"
2294 i686_deps="x86"
2295 mmx_deps="x86"
2296 mmxext_deps="mmx"
2297 sse_deps="mmxext"
2298 sse2_deps="sse"
2299 sse3_deps="sse2"
2300 ssse3_deps="sse3"
2301 sse4_deps="ssse3"
2302 sse42_deps="sse4"
2303 aesni_deps="sse42"
2304 avx_deps="sse42"
2305 xop_deps="avx"
2306 fma3_deps="avx"
2307 fma4_deps="avx"
2308 avx2_deps="avx"
2309
2310 mmx_external_deps="yasm"
2311 mmx_inline_deps="inline_asm"
2312 mmx_suggest="mmx_external mmx_inline"
2313
2314 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2315     eval dep=\$${ext}_deps
2316     eval ${ext}_external_deps='"${dep}_external"'
2317     eval ${ext}_inline_deps='"${dep}_inline"'
2318     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2319 done
2320
2321 aligned_stack_if_any="aarch64 ppc x86"
2322 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2323 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2324 fast_unaligned_if_any="aarch64 ppc x86"
2325 simd_align_16_if_any="altivec neon sse"
2326 simd_align_32_if_any="avx"
2327
2328 # system capabilities
2329 symver_if_any="symver_asm_label symver_gnu_asm"
2330 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
2331
2332 # threading support
2333 atomics_gcc_if="sync_val_compare_and_swap"
2334 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2335 atomics_win32_if="MemoryBarrier"
2336 atomics_native_if_any="$ATOMICS_LIST"
2337 w32threads_deps="atomics_native"
2338 threads_if_any="$THREADS_LIST"
2339
2340 # subsystems
2341 dct_select="rdft"
2342 dirac_parse_select="golomb"
2343 error_resilience_select="me_cmp"
2344 faandct_deps="faan fdctdsp"
2345 faanidct_deps="faan idctdsp"
2346 h264dsp_select="startcode"
2347 frame_thread_encoder_deps="encoders threads"
2348 intrax8_select="blockdsp idctdsp"
2349 mdct_select="fft"
2350 mdct15_select="fft"
2351 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2352 mpeg_er_select="error_resilience"
2353 mpegaudio_select="mpegaudiodsp"
2354 mpegaudiodsp_select="dct"
2355 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2356 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2357 vc1dsp_select="h264chroma qpeldsp startcode"
2358 rdft_select="fft"
2359
2360 # decoders / encoders
2361 aac_decoder_select="mdct15 mdct sinewin"
2362 aac_fixed_decoder_select="mdct sinewin"
2363 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2364 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2365 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2366 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2367 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2368 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2369 adpcm_g722_decoder_select="g722dsp"
2370 adpcm_g722_encoder_select="g722dsp"
2371 aic_decoder_select="golomb idctdsp"
2372 alac_encoder_select="lpc"
2373 als_decoder_select="bswapdsp"
2374 amrnb_decoder_select="lsp"
2375 amrwb_decoder_select="lsp"
2376 amv_decoder_select="sp5x_decoder exif"
2377 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2378 ape_decoder_select="bswapdsp llauddsp"
2379 apng_decoder_select="zlib"
2380 apng_encoder_select="llvidencdsp zlib"
2381 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2382 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2383 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2384 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2385 atrac1_decoder_select="mdct sinewin"
2386 atrac3_decoder_select="mdct"
2387 atrac3p_decoder_select="mdct sinewin"
2388 avrn_decoder_select="exif jpegtables"
2389 bink_decoder_select="blockdsp hpeldsp"
2390 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2391 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2392 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2393 cllc_decoder_select="bswapdsp"
2394 comfortnoise_encoder_select="lpc"
2395 cook_decoder_select="audiodsp mdct sinewin"
2396 cscd_decoder_select="lzo"
2397 cscd_decoder_suggest="zlib"
2398 dca_decoder_select="mdct"
2399 dds_decoder_select="texturedsp"
2400 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2401 dnxhd_decoder_select="blockdsp idctdsp"
2402 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2403 dvvideo_decoder_select="dvprofile idctdsp"
2404 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2405 dxa_decoder_select="zlib"
2406 dxv_decoder_select="lzf texturedsp"
2407 eac3_decoder_select="ac3_decoder"
2408 eac3_encoder_select="ac3_encoder"
2409 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2410 eatgq_decoder_select="aandcttables"
2411 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2412 exr_decoder_select="zlib"
2413 ffv1_decoder_select="golomb rangecoder"
2414 ffv1_encoder_select="rangecoder"
2415 ffvhuff_decoder_select="huffyuv_decoder"
2416 ffvhuff_encoder_select="huffyuv_encoder"
2417 fic_decoder_select="golomb"
2418 flac_decoder_select="flacdsp golomb"
2419 flac_encoder_select="bswapdsp flacdsp golomb lpc"
2420 flashsv2_decoder_select="zlib"
2421 flashsv2_encoder_select="zlib"
2422 flashsv_decoder_select="zlib"
2423 flashsv_encoder_select="zlib"
2424 flv_decoder_select="h263_decoder"
2425 flv_encoder_select="h263_encoder"
2426 fourxm_decoder_select="blockdsp bswapdsp"
2427 fraps_decoder_select="bswapdsp huffman"
2428 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2429 g729_decoder_select="audiodsp"
2430 h261_decoder_select="mpegvideo"
2431 h261_encoder_select="aandcttables mpegvideoenc"
2432 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2433 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2434 h263i_decoder_select="h263_decoder"
2435 h263p_decoder_select="h263_decoder"
2436 h263p_encoder_select="h263_encoder"
2437 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2438 h264_decoder_suggest="error_resilience"
2439 hap_decoder_select="snappy texturedsp"
2440 hap_encoder_deps="libsnappy"
2441 hap_encoder_select="texturedspenc"
2442 hevc_decoder_select="bswapdsp cabac golomb videodsp"
2443 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2444 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2445 iac_decoder_select="imc_decoder"
2446 imc_decoder_select="bswapdsp fft mdct sinewin"
2447 indeo3_decoder_select="hpeldsp"
2448 indeo4_decoder_select="ividsp"
2449 indeo5_decoder_select="ividsp"
2450 interplay_video_decoder_select="hpeldsp"
2451 jpegls_decoder_select="golomb mjpeg_decoder"
2452 jpegls_encoder_select="golomb"
2453 jv_decoder_select="blockdsp"
2454 lagarith_decoder_select="llviddsp"
2455 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2456 loco_decoder_select="golomb"
2457 magicyuv_decoder_select="llviddsp"
2458 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2459 metasound_decoder_select="lsp mdct sinewin"
2460 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2461 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2462 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2463 mjpegb_decoder_select="mjpeg_decoder"
2464 mlp_decoder_select="mlp_parser"
2465 motionpixels_decoder_select="bswapdsp"
2466 mp1_decoder_select="mpegaudio"
2467 mp1float_decoder_select="mpegaudio"
2468 mp2_decoder_select="mpegaudio"
2469 mp2float_decoder_select="mpegaudio"
2470 mp3_decoder_select="mpegaudio"
2471 mp3adu_decoder_select="mpegaudio"
2472 mp3adufloat_decoder_select="mpegaudio"
2473 mp3float_decoder_select="mpegaudio"
2474 mp3on4_decoder_select="mpegaudio"
2475 mp3on4float_decoder_select="mpegaudio"
2476 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2477 mpc8_decoder_select="mpegaudiodsp"
2478 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2479 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2480 mpegvideo_decoder_select="mpegvideo"
2481 mpeg1video_decoder_select="mpegvideo"
2482 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2483 mpeg2video_decoder_select="mpegvideo"
2484 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2485 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2486 mpeg4_encoder_select="h263_encoder"
2487 msa1_decoder_select="mss34dsp"
2488 msmpeg4v1_decoder_select="h263_decoder"
2489 msmpeg4v2_decoder_select="h263_decoder"
2490 msmpeg4v2_encoder_select="h263_encoder"
2491 msmpeg4v3_decoder_select="h263_decoder"
2492 msmpeg4v3_encoder_select="h263_encoder"
2493 mss2_decoder_select="vc1_decoder mpegvideo"
2494 mts2_decoder_select="mss34dsp"
2495 mxpeg_decoder_select="mjpeg_decoder"
2496 nellymoser_decoder_select="mdct sinewin"
2497 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2498 nuv_decoder_select="idctdsp lzo"
2499 on2avc_decoder_select="mdct"
2500 opus_decoder_deps="swresample"
2501 opus_decoder_select="mdct15"
2502 opus_encoder_select="audio_frame_queue mdct15"
2503 png_decoder_select="zlib"
2504 png_encoder_select="llvidencdsp zlib"
2505 prores_decoder_select="blockdsp idctdsp"
2506 prores_encoder_select="fdctdsp"
2507 qcelp_decoder_select="lsp"
2508 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2509 ra_144_decoder_select="audiodsp"
2510 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2511 ralf_decoder_select="golomb"
2512 rawvideo_decoder_select="bswapdsp"
2513 rscc_decoder_select="zlib"
2514 rtjpeg_decoder_select="me_cmp"
2515 rv10_decoder_select="h263_decoder"
2516 rv10_encoder_select="h263_encoder"
2517 rv20_decoder_select="h263_decoder"
2518 rv20_encoder_select="h263_encoder"
2519 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2520 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2521 screenpresso_decoder_select="zlib"
2522 shorten_decoder_select="golomb bswapdsp"
2523 sipr_decoder_select="lsp"
2524 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2525 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2526 sonic_decoder_select="golomb rangecoder"
2527 sonic_encoder_select="golomb rangecoder"
2528 sonic_ls_encoder_select="golomb rangecoder"
2529 sp5x_decoder_select="mjpeg_decoder"
2530 svq1_decoder_select="hpeldsp"
2531 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2532 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2533 svq3_decoder_suggest="zlib"
2534 tak_decoder_select="audiodsp"
2535 tdsc_decoder_select="zlib mjpeg_decoder"
2536 theora_decoder_select="vp3_decoder"
2537 thp_decoder_select="mjpeg_decoder"
2538 tiff_decoder_suggest="zlib lzma"
2539 tiff_encoder_suggest="zlib"
2540 truehd_decoder_select="mlp_parser"
2541 truemotion2_decoder_select="bswapdsp"
2542 truespeech_decoder_select="bswapdsp"
2543 tscc_decoder_select="zlib"
2544 twinvq_decoder_select="mdct lsp sinewin"
2545 txd_decoder_select="texturedsp"
2546 utvideo_decoder_select="bswapdsp llviddsp"
2547 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2548 vble_decoder_select="llviddsp"
2549 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2550 vc1_qsv_decoder_deps="libmfx"
2551 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2552 vc1image_decoder_select="vc1_decoder"
2553 vorbis_decoder_select="mdct"
2554 vorbis_encoder_select="mdct"
2555 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2556 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2557 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2558 vp6a_decoder_select="vp6_decoder"
2559 vp6f_decoder_select="vp6_decoder"
2560 vp7_decoder_select="h264pred videodsp vp8dsp"
2561 vp8_decoder_select="h264pred videodsp vp8dsp"
2562 vp9_decoder_select="videodsp vp9_parser"
2563 webp_decoder_select="vp8_decoder exif"
2564 wmalossless_decoder_select="llauddsp"
2565 wmapro_decoder_select="mdct sinewin wma_freqs"
2566 wmav1_decoder_select="mdct sinewin wma_freqs"
2567 wmav1_encoder_select="mdct sinewin wma_freqs"
2568 wmav2_decoder_select="mdct sinewin wma_freqs"
2569 wmav2_encoder_select="mdct sinewin wma_freqs"
2570 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2571 wmv1_decoder_select="h263_decoder"
2572 wmv1_encoder_select="h263_encoder"
2573 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2574 wmv2_encoder_select="h263_encoder wmv2dsp"
2575 wmv3_decoder_select="vc1_decoder"
2576 wmv3image_decoder_select="wmv3_decoder"
2577 xma1_decoder_select="wmapro_decoder"
2578 xma2_decoder_select="wmapro_decoder"
2579 zerocodec_decoder_select="zlib"
2580 zlib_decoder_select="zlib"
2581 zlib_encoder_select="zlib"
2582 zmbv_decoder_select="zlib"
2583 zmbv_encoder_select="zlib"
2584
2585 # platform codecs
2586 audiotoolbox_deps="AudioToolbox_AudioToolbox_h"
2587 audiotoolbox_extralibs="-framework CoreFoundation -framework AudioToolbox -framework CoreMedia"
2588
2589 # hardware accelerators
2590 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2591 cuda_deps_any="dlopen LoadLibrary"
2592 cuvid_deps="cuda"
2593 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2594 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2595 dxva2_extralibs="-luser32"
2596 vaapi_deps="va_va_h"
2597 vda_framework_deps="VideoDecodeAcceleration_VDADecoder_h"
2598 vda_framework_extralibs="-framework VideoDecodeAcceleration"
2599 vda_deps="vda_framework pthreads"
2600 vda_extralibs="-framework CoreFoundation -framework QuartzCore"
2601 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2602 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2603 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2604 xvmc_deps="X11_extensions_XvMClib_h"
2605
2606 h263_vaapi_hwaccel_deps="vaapi"
2607 h263_vaapi_hwaccel_select="h263_decoder"
2608 h263_videotoolbox_hwaccel_deps="videotoolbox"
2609 h263_videotoolbox_hwaccel_select="h263_decoder"
2610 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2611 h264_cuvid_hwaccel_deps="cuda cuvid"
2612 h264_cuvid_hwaccel_select="h264_cuvid_decoder"
2613 h264_d3d11va_hwaccel_deps="d3d11va"
2614 h264_d3d11va_hwaccel_select="h264_decoder"
2615 h264_dxva2_hwaccel_deps="dxva2"
2616 h264_dxva2_hwaccel_select="h264_decoder"
2617 h264_mediacodec_decoder_deps="mediacodec"
2618 h264_mediacodec_hwaccel_deps="mediacodec"
2619 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2620 h264_mmal_decoder_deps="mmal"
2621 h264_mmal_decoder_select="mmal"
2622 h264_mmal_hwaccel_deps="mmal"
2623 h264_omx_encoder_deps="omx"
2624 h264_qsv_hwaccel_deps="libmfx"
2625 h264_vaapi_hwaccel_deps="vaapi"
2626 h264_vaapi_hwaccel_select="h264_decoder"
2627 h264_vda_decoder_deps="vda"
2628 h264_vda_decoder_select="h264_decoder"
2629 h264_vda_hwaccel_deps="vda"
2630 h264_vda_hwaccel_select="h264_decoder"
2631 h264_vda_old_hwaccel_deps="vda"
2632 h264_vda_old_hwaccel_select="h264_decoder"
2633 h264_vdpau_decoder_deps="vdpau"
2634 h264_vdpau_decoder_select="h264_decoder"
2635 h264_vdpau_hwaccel_deps="vdpau"
2636 h264_vdpau_hwaccel_select="h264_decoder"
2637 h264_videotoolbox_hwaccel_deps="videotoolbox"
2638 h264_videotoolbox_hwaccel_select="h264_decoder"
2639 hevc_cuvid_hwaccel_deps="cuda cuvid"
2640 hevc_cuvid_hwaccel_select="hevc_cuvid_decoder"
2641 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2642 hevc_d3d11va_hwaccel_select="hevc_decoder"
2643 hevc_mediacodec_decoder_deps="mediacodec"
2644 hevc_mediacodec_hwaccel_deps="mediacodec"
2645 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2646 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2647 hevc_dxva2_hwaccel_select="hevc_decoder"
2648 hevc_qsv_hwaccel_deps="libmfx"
2649 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2650 hevc_vaapi_hwaccel_select="hevc_decoder"
2651 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2652 hevc_vdpau_hwaccel_select="hevc_decoder"
2653 mjpeg_cuvid_hwaccel_deps="cuda cuvid"
2654 mjpeg_cuvid_hwaccel_select="mjpeg_cuvid_decoder"
2655 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2656 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2657 mpeg_vdpau_decoder_deps="vdpau"
2658 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2659 mpeg_xvmc_hwaccel_deps="xvmc"
2660 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2661 mpeg1_cuvid_hwaccel_deps="cuda cuvid"
2662 mpeg1_cuvid_hwaccel_select="mpeg1_cuvid_decoder"
2663 mpeg1_vdpau_decoder_deps="vdpau"
2664 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2665 mpeg1_vdpau_hwaccel_deps="vdpau"
2666 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2667 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2668 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2669 mpeg1_xvmc_hwaccel_deps="xvmc"
2670 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2671 mpeg2_crystalhd_decoder_select="crystalhd"
2672 mpeg2_cuvid_hwaccel_deps="cuda cuvid"
2673 mpeg2_cuvid_hwaccel_select="mpeg2_cuvid_decoder"
2674 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2675 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2676 mpeg2_dxva2_hwaccel_deps="dxva2"
2677 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2678 mpeg2_mmal_decoder_deps="mmal"
2679 mpeg2_mmal_decoder_select="mmal"
2680 mpeg2_mmal_hwaccel_deps="mmal"
2681 mpeg2_qsv_hwaccel_deps="libmfx"
2682 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2683 mpeg2_vaapi_hwaccel_deps="vaapi"
2684 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2685 mpeg2_vdpau_hwaccel_deps="vdpau"
2686 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2687 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2688 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2689 mpeg2_xvmc_hwaccel_deps="xvmc"
2690 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2691 mpeg4_crystalhd_decoder_select="crystalhd"
2692 mpeg4_cuvid_hwaccel_deps="cuda cuvid"
2693 mpeg4_cuvid_hwaccel_select="mpeg4_cuvid_decoder"
2694 mpeg4_mediacodec_decoder_deps="mediacodec"
2695 mpeg4_mediacodec_hwaccel_deps="mediacodec"
2696 mpeg4_mmal_decoder_deps="mmal"
2697 mpeg4_mmal_decoder_select="mmal"
2698 mpeg4_mmal_hwaccel_deps="mmal"
2699 mpeg4_omx_encoder_deps="omx"
2700 mpeg4_vaapi_hwaccel_deps="vaapi"
2701 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2702 mpeg4_vdpau_decoder_deps="vdpau"
2703 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2704 mpeg4_vdpau_hwaccel_deps="vdpau"
2705 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2706 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2707 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2708 msmpeg4_crystalhd_decoder_select="crystalhd"
2709 vc1_crystalhd_decoder_select="crystalhd"
2710 vc1_cuvid_hwaccel_deps="cuda cuvid"
2711 vc1_cuvid_hwaccel_select="vc1_cuvid_decoder"
2712 vc1_d3d11va_hwaccel_deps="d3d11va"
2713 vc1_d3d11va_hwaccel_select="vc1_decoder"
2714 vc1_dxva2_hwaccel_deps="dxva2"
2715 vc1_dxva2_hwaccel_select="vc1_decoder"
2716 vc1_mmal_decoder_deps="mmal"
2717 vc1_mmal_decoder_select="mmal"
2718 vc1_mmal_hwaccel_deps="mmal"
2719 vc1_qsv_hwaccel_deps="libmfx"
2720 vc1_qsv_hwaccel_select="qsvdec_vc1"
2721 vc1_vaapi_hwaccel_deps="vaapi"
2722 vc1_vaapi_hwaccel_select="vc1_decoder"
2723 vc1_vdpau_decoder_deps="vdpau"
2724 vc1_vdpau_decoder_select="vc1_decoder"
2725 vc1_vdpau_hwaccel_deps="vdpau"
2726 vc1_vdpau_hwaccel_select="vc1_decoder"
2727 vp8_cuvid_hwaccel_deps="cuda cuvid"
2728 vp8_cuvid_hwaccel_select="vp8_cuvid_decoder"
2729 vp9_cuvid_hwaccel_deps="cuda cuvid"
2730 vp9_cuvid_hwaccel_select="vp9_cuvid_decoder"
2731 vp8_mediacodec_decoder_deps="mediacodec"
2732 vp8_mediacodec_hwaccel_deps="mediacodec"
2733 vp8_qsv_hwaccel_deps="libmfx"
2734 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2735 vp9_d3d11va_hwaccel_select="vp9_decoder"
2736 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2737 vp9_dxva2_hwaccel_select="vp9_decoder"
2738 vp9_mediacodec_decoder_deps="mediacodec"
2739 vp9_mediacodec_hwaccel_deps="mediacodec"
2740 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2741 vp9_vaapi_hwaccel_select="vp9_decoder"
2742 wmv3_crystalhd_decoder_select="crystalhd"
2743 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2744 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2745 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2746 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2747 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2748
2749 # hardware-accelerated codecs
2750 omx_deps="dlopen pthreads"
2751 omx_extralibs='$ldl'
2752 qsvdec_select="qsv"
2753 qsvenc_select="qsv"
2754 vaapi_encode_deps="vaapi"
2755
2756 hwupload_cuda_filter_deps="cuda"
2757 scale_npp_filter_deps="cuda libnpp"
2758
2759 nvenc_deps="cuda"
2760 nvenc_deps_any="dlopen LoadLibrary"
2761 nvenc_encoder_deps="nvenc"
2762 h264_cuvid_decoder_deps="cuda cuvid"
2763 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2764 h264_nvenc_encoder_deps="nvenc"
2765 h264_qsv_decoder_deps="libmfx"
2766 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2767 h264_qsv_encoder_deps="libmfx"
2768 h264_qsv_encoder_select="qsvenc"
2769 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2770 h264_vaapi_encoder_select="vaapi_encode golomb"
2771
2772 hevc_cuvid_decoder_deps="cuda cuvid"
2773 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2774 hevc_nvenc_encoder_deps="nvenc"
2775 hevc_qsv_decoder_deps="libmfx"
2776 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2777 hevc_qsv_encoder_deps="libmfx"
2778 hevc_qsv_encoder_select="qsvenc"
2779 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2780 hevc_vaapi_encoder_select="vaapi_encode golomb"
2781 mjpeg_cuvid_decoder_deps="cuda cuvid"
2782 mpeg1_cuvid_decoder_deps="cuda cuvid"
2783 mpeg2_cuvid_decoder_deps="cuda cuvid"
2784 mpeg2_qsv_decoder_deps="libmfx"
2785 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2786 mpeg2_qsv_encoder_deps="libmfx"
2787 mpeg2_qsv_encoder_select="qsvenc"
2788 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2789 mpeg2_vaapi_encoder_select="vaapi_encode"
2790 mpeg4_cuvid_decoder_deps="cuda cuvid"
2791 nvenc_h264_encoder_deps="nvenc"
2792 nvenc_hevc_encoder_deps="nvenc"
2793
2794 vc1_cuvid_decoder_deps="cuda cuvid"
2795 vp8_cuvid_decoder_deps="cuda cuvid"
2796 vp8_qsv_decoder_deps="libmfx"
2797 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2798 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2799 vp8_vaapi_encoder_select="vaapi_encode"
2800 vp9_cuvid_decoder_deps="cuda cuvid"
2801
2802 # parsers
2803 h264_parser_select="golomb h264dsp h264parse"
2804 hevc_parser_select="golomb"
2805 mpegvideo_parser_select="mpegvideo"
2806 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2807 vc1_parser_select="vc1dsp"
2808
2809 # bitstream_filters
2810 mjpeg2jpeg_bsf_select="jpegtables"
2811
2812 # external libraries
2813 aac_at_decoder_deps="audiotoolbox"
2814 ac3_at_decoder_deps="audiotoolbox"
2815 ac3_at_decoder_select="ac3_parser"
2816 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2817 alac_at_decoder_deps="audiotoolbox"
2818 amr_nb_at_decoder_deps="audiotoolbox"
2819 avisynth_deps_any="dlopen LoadLibrary"
2820 avisynth_demuxer_deps="avisynth"
2821 avisynth_demuxer_select="riffdec"
2822 eac3_at_decoder_deps="audiotoolbox"
2823 eac3_at_decoder_select="ac3_parser"
2824 gsm_ms_at_decoder_deps="audiotoolbox"
2825 ilbc_at_decoder_deps="audiotoolbox"
2826 mp1_at_decoder_deps="audiotoolbox"
2827 mp2_at_decoder_deps="audiotoolbox"
2828 mp3_at_decoder_deps="audiotoolbox"
2829 pcm_alaw_at_decoder_deps="audiotoolbox"
2830 pcm_mulaw_at_decoder_deps="audiotoolbox"
2831 qdmc_at_decoder_deps="audiotoolbox"
2832 qdm2_at_decoder_deps="audiotoolbox"
2833 aac_at_encoder_deps="audiotoolbox"
2834 aac_at_encoder_select="audio_frame_queue"
2835 alac_at_encoder_deps="audiotoolbox"
2836 alac_at_encoder_select="audio_frame_queue"
2837 ilbc_at_encoder_deps="audiotoolbox"
2838 ilbc_at_encoder_select="audio_frame_queue"
2839 pcm_alaw_at_encoder_deps="audiotoolbox"
2840 pcm_alaw_at_encoder_select="audio_frame_queue"
2841 pcm_mulaw_at_encoder_deps="audiotoolbox"
2842 pcm_mulaw_at_encoder_select="audio_frame_queue"
2843 chromaprint_muxer_deps="chromaprint"
2844 h264_videotoolbox_encoder_deps="videotoolbox_encoder pthreads"
2845 libcelt_decoder_deps="libcelt"
2846 libfdk_aac_decoder_deps="libfdk_aac"
2847 libfdk_aac_encoder_deps="libfdk_aac"
2848 libfdk_aac_encoder_select="audio_frame_queue"
2849 libgme_demuxer_deps="libgme"
2850 libgsm_decoder_deps="libgsm"
2851 libgsm_encoder_deps="libgsm"
2852 libgsm_ms_decoder_deps="libgsm"
2853 libgsm_ms_encoder_deps="libgsm"
2854 libilbc_decoder_deps="libilbc"
2855 libilbc_encoder_deps="libilbc"
2856 libkvazaar_encoder_deps="libkvazaar"
2857 libmodplug_demuxer_deps="libmodplug"
2858 libmp3lame_encoder_deps="libmp3lame"
2859 libmp3lame_encoder_select="audio_frame_queue"
2860 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2861 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2862 libopencore_amrnb_encoder_select="audio_frame_queue"
2863 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2864 libopenh264_decoder_deps="libopenh264"
2865 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2866 libopenh264_encoder_deps="libopenh264"
2867 libopenjpeg_decoder_deps="libopenjpeg"
2868 libopenjpeg_encoder_deps="libopenjpeg"
2869 libopenmpt_demuxer_deps="libopenmpt"
2870 libopus_decoder_deps="libopus"
2871 libopus_encoder_deps="libopus"
2872 libopus_encoder_select="audio_frame_queue"
2873 libschroedinger_decoder_deps="libschroedinger"
2874 libschroedinger_encoder_deps="libschroedinger"
2875 libshine_encoder_deps="libshine"
2876 libshine_encoder_select="audio_frame_queue"
2877 libspeex_decoder_deps="libspeex"
2878 libspeex_encoder_deps="libspeex"
2879 libspeex_encoder_select="audio_frame_queue"
2880 libtheora_encoder_deps="libtheora"
2881 libtwolame_encoder_deps="libtwolame"
2882 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2883 libvorbis_decoder_deps="libvorbis"
2884 libvorbis_encoder_deps="libvorbis"
2885 libvorbis_encoder_select="audio_frame_queue"
2886 libvpx_vp8_decoder_deps="libvpx"
2887 libvpx_vp8_encoder_deps="libvpx"
2888 libvpx_vp9_decoder_deps="libvpx"
2889 libvpx_vp9_encoder_deps="libvpx"
2890 libwavpack_encoder_deps="libwavpack"
2891 libwebp_encoder_deps="libwebp"
2892 libwebp_anim_encoder_deps="libwebp"
2893 libx262_encoder_deps="libx262"
2894 libx264_encoder_deps="libx264"
2895 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2896 libx264rgb_encoder_select="libx264_encoder"
2897 libx265_encoder_deps="libx265"
2898 libxavs_encoder_deps="libxavs"
2899 libxvid_encoder_deps="libxvid"
2900 libzvbi_teletext_decoder_deps="libzvbi"
2901 videotoolbox_deps="VideoToolbox_VideoToolbox_h"
2902 videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework CoreVideo"
2903 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2904 videotoolbox_encoder_suggest="vda_framework vt_bt2020"
2905 vt_bt2020_deps="kCVImageBufferColorPrimaries_ITU_R_2020"
2906
2907 # demuxers / muxers
2908 ac3_demuxer_select="ac3_parser"
2909 aiff_muxer_select="iso_media"
2910 asf_demuxer_select="riffdec"
2911 asf_o_demuxer_select="riffdec"
2912 asf_muxer_select="riffenc"
2913 asf_stream_muxer_select="asf_muxer"
2914 avi_demuxer_select="iso_media riffdec exif"
2915 avi_muxer_select="riffenc"
2916 caf_demuxer_select="iso_media riffdec"
2917 caf_muxer_select="iso_media"
2918 dash_muxer_select="mp4_muxer"
2919 dirac_demuxer_select="dirac_parser"
2920 dts_demuxer_select="dca_parser"
2921 dtshd_demuxer_select="dca_parser"
2922 dv_demuxer_select="dvprofile"
2923 dv_muxer_select="dvprofile"
2924 dxa_demuxer_select="riffdec"
2925 eac3_demuxer_select="ac3_parser"
2926 f4v_muxer_select="mov_muxer"
2927 fifo_muxer_deps="threads"
2928 flac_demuxer_select="flac_parser"
2929 hds_muxer_select="flv_muxer"
2930 hls_muxer_select="mpegts_muxer"
2931 image2_alias_pix_demuxer_select="image2_demuxer"
2932 image2_brender_pix_demuxer_select="image2_demuxer"
2933 ipod_muxer_select="mov_muxer"
2934 ismv_muxer_select="mov_muxer"
2935 libnut_demuxer_deps="libnut"
2936 libnut_muxer_deps="libnut"
2937 matroska_audio_muxer_select="matroska_muxer"
2938 matroska_demuxer_select="iso_media riffdec"
2939 matroska_demuxer_suggest="bzlib lzo zlib"
2940 matroska_muxer_select="iso_media riffenc"
2941 mmf_muxer_select="riffenc"
2942 mov_demuxer_select="iso_media riffdec"
2943 mov_demuxer_suggest="zlib"
2944 mov_muxer_select="iso_media riffenc rtpenc_chain"
2945 mp3_demuxer_select="mpegaudio_parser"
2946 mp4_muxer_select="mov_muxer"
2947 mpegts_demuxer_select="iso_media"
2948 mpegts_muxer_select="adts_muxer latm_muxer"
2949 mpegtsraw_demuxer_select="mpegts_demuxer"
2950 mxf_d10_muxer_select="mxf_muxer"
2951 mxf_opatom_muxer_select="mxf_muxer"
2952 nut_muxer_select="riffenc"
2953 nuv_demuxer_select="riffdec"
2954 oga_muxer_select="ogg_muxer"
2955 ogg_demuxer_select="dirac_parse"
2956 ogv_muxer_select="ogg_muxer"
2957 opus_muxer_select="ogg_muxer"
2958 psp_muxer_select="mov_muxer"
2959 rtp_demuxer_select="sdp_demuxer"
2960 rtp_muxer_select="golomb"
2961 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2962 rtsp_demuxer_select="http_protocol rtpdec"
2963 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2964 sap_demuxer_select="sdp_demuxer"
2965 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2966 sdp_demuxer_select="rtpdec"
2967 smoothstreaming_muxer_select="ismv_muxer"
2968 spdif_muxer_select="aac_parser"
2969 spx_muxer_select="ogg_muxer"
2970 swf_demuxer_suggest="zlib"
2971 tak_demuxer_select="tak_parser"
2972 tg2_muxer_select="mov_muxer"
2973 tgp_muxer_select="mov_muxer"
2974 vobsub_demuxer_select="mpegps_demuxer"
2975 w64_demuxer_select="wav_demuxer"
2976 w64_muxer_select="wav_muxer"
2977 wav_demuxer_select="riffdec"
2978 wav_muxer_select="riffenc"
2979 webm_muxer_select="iso_media riffenc"
2980 webm_dash_manifest_demuxer_select="matroska_demuxer"
2981 wtv_demuxer_select="mpegts_demuxer riffdec"
2982 wtv_muxer_select="mpegts_muxer riffenc"
2983 xmv_demuxer_select="riffdec"
2984 xwma_demuxer_select="riffdec"
2985
2986 # indevs / outdevs
2987 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2988 alsa_outdev_deps="alsa_asoundlib_h"
2989 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2990 avfoundation_indev_select="avfoundation"
2991 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2992 caca_outdev_deps="libcaca"
2993 decklink_indev_deps="decklink pthreads"
2994 decklink_indev_extralibs="-lstdc++"
2995 decklink_outdev_deps="decklink pthreads"
2996 decklink_outdev_extralibs="-lstdc++"
2997 dshow_indev_deps="IBaseFilter"
2998 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
2999 dv1394_indev_deps="dv1394"
3000 dv1394_indev_select="dv_demuxer"
3001 fbdev_indev_deps="linux_fb_h"
3002 fbdev_outdev_deps="linux_fb_h"
3003 gdigrab_indev_deps="CreateDIBSection"
3004 gdigrab_indev_extralibs="-lgdi32"
3005 gdigrab_indev_select="bmp_decoder"
3006 iec61883_indev_deps="libiec61883"
3007 jack_indev_deps="jack_jack_h"
3008 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3009 lavfi_indev_deps="avfilter"
3010 libcdio_indev_deps="libcdio"
3011 libdc1394_indev_deps="libdc1394"
3012 libv4l2_indev_deps="libv4l2"
3013 openal_indev_deps="openal"
3014 opengl_outdev_deps="opengl"
3015 oss_indev_deps_any="soundcard_h sys_soundcard_h"
3016 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
3017 pulse_indev_deps="libpulse"
3018 pulse_outdev_deps="libpulse"
3019 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
3020 qtkit_indev_select="qtkit"
3021 sdl2_outdev_deps="sdl2"
3022 sndio_indev_deps="sndio_h"
3023 sndio_outdev_deps="sndio_h"
3024 v4l_indev_deps="linux_videodev_h"
3025 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3026 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3027 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
3028 vfwcap_indev_extralibs="-lavicap32"
3029 xcbgrab_indev_deps="libxcb"
3030 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3031 xv_outdev_extralibs="-lXv -lX11 -lXext"
3032
3033 # protocols
3034 async_protocol_deps="threads"
3035 bluray_protocol_deps="libbluray"
3036 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
3037 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3038 ffrtmpcrypt_protocol_select="tcp_protocol"
3039 ffrtmphttp_protocol_deps="!librtmp_protocol"
3040 ffrtmphttp_protocol_select="http_protocol"
3041 ftp_protocol_select="tcp_protocol"
3042 gopher_protocol_select="network"
3043 http_protocol_select="tcp_protocol"
3044 httpproxy_protocol_select="tcp_protocol"
3045 https_protocol_select="tls_protocol"
3046 icecast_protocol_select="http_protocol"
3047 librtmp_protocol_deps="librtmp"
3048 librtmpe_protocol_deps="librtmp"
3049 librtmps_protocol_deps="librtmp"
3050 librtmpt_protocol_deps="librtmp"
3051 librtmpte_protocol_deps="librtmp"
3052 libsmbclient_protocol_deps="libsmbclient gplv3"
3053 libssh_protocol_deps="libssh"
3054 mmsh_protocol_select="http_protocol"
3055 mmst_protocol_select="network"
3056 rtmp_protocol_deps="!librtmp_protocol"
3057 rtmp_protocol_select="tcp_protocol"
3058 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3059 rtmps_protocol_deps="!librtmp_protocol"
3060 rtmps_protocol_select="tls_protocol"
3061 rtmpt_protocol_select="ffrtmphttp_protocol"
3062 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3063 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3064 rtp_protocol_select="udp_protocol"
3065 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3066 sctp_protocol_select="network"
3067 srtp_protocol_select="rtp_protocol srtp"
3068 tcp_protocol_select="network"
3069 tls_gnutls_protocol_deps="gnutls !tls_schannel_protocol !tls_securetransport_protocol"
3070 tls_gnutls_protocol_select="tcp_protocol"
3071 tls_openssl_protocol_deps="openssl !tls_schannel_protocol !tls_securetransport_protocol !tls_gnutls_protocol"
3072 tls_openssl_protocol_select="tcp_protocol"
3073 tls_schannel_protocol_deps="schannel"
3074 tls_schannel_protocol_select="tcp_protocol"
3075 tls_securetransport_protocol_deps="securetransport"
3076 tls_securetransport_protocol_select="tcp_protocol"
3077 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
3078 udp_protocol_select="network"
3079 udplite_protocol_select="network"
3080 unix_protocol_deps="sys_un_h"
3081 unix_protocol_select="network"
3082
3083 # filters
3084 afftfilt_filter_deps="avcodec"
3085 afftfilt_filter_select="fft"
3086 amovie_filter_deps="avcodec avformat"
3087 aresample_filter_deps="swresample"
3088 ass_filter_deps="libass"
3089 atempo_filter_deps="avcodec"
3090 atempo_filter_select="rdft"
3091 azmq_filter_deps="libzmq"
3092 blackframe_filter_deps="gpl"
3093 boxblur_filter_deps="gpl"
3094 bs2b_filter_deps="libbs2b"
3095 colormatrix_filter_deps="gpl"
3096 cover_rect_filter_deps="avcodec avformat gpl"
3097 cropdetect_filter_deps="gpl"
3098 deinterlace_qsv_filter_deps="libmfx"
3099 deinterlace_vaapi_filter_deps="vaapi"
3100 delogo_filter_deps="gpl"
3101 deshake_filter_select="pixelutils"
3102 drawtext_filter_deps="libfreetype"
3103 eq_filter_deps="gpl"
3104 fftfilt_filter_deps="avcodec"
3105 fftfilt_filter_select="rdft"
3106 find_rect_filter_deps="avcodec avformat gpl"
3107 firequalizer_filter_deps="avcodec"
3108 firequalizer_filter_select="rdft"
3109 flite_filter_deps="libflite"
3110 framerate_filter_select="pixelutils"
3111 frei0r_filter_deps="frei0r dlopen"
3112 frei0r_src_filter_deps="frei0r dlopen"
3113 fspp_filter_deps="gpl"
3114 geq_filter_deps="gpl"
3115 histeq_filter_deps="gpl"
3116 hqdn3d_filter_deps="gpl"
3117 interlace_filter_deps="gpl"
3118 kerndeint_filter_deps="gpl"
3119 ladspa_filter_deps="ladspa dlopen"
3120 mcdeint_filter_deps="avcodec gpl"
3121 movie_filter_deps="avcodec avformat"
3122 mpdecimate_filter_deps="gpl"
3123 mpdecimate_filter_select="pixelutils"
3124 mptestsrc_filter_deps="gpl"
3125 negate_filter_deps="lut_filter"
3126 nnedi_filter_deps="gpl"
3127 ocr_filter_deps="libtesseract"
3128 ocv_filter_deps="libopencv"
3129 owdenoise_filter_deps="gpl"
3130 pan_filter_deps="swresample"
3131 perspective_filter_deps="gpl"
3132 phase_filter_deps="gpl"
3133 pp7_filter_deps="gpl"
3134 pp_filter_deps="gpl postproc"
3135 pullup_filter_deps="gpl"
3136 removelogo_filter_deps="avcodec avformat swscale"
3137 repeatfields_filter_deps="gpl"
3138 resample_filter_deps="avresample"
3139 rubberband_filter_deps="librubberband"
3140 sab_filter_deps="gpl swscale"
3141 scale2ref_filter_deps="swscale"
3142 scale_filter_deps="swscale"
3143 scale_qsv_filter_deps="libmfx"
3144 select_filter_select="pixelutils"
3145 showcqt_filter_deps="avcodec avformat swscale"
3146 showcqt_filter_select="fft"
3147 showfreqs_filter_deps="avcodec"
3148 showfreqs_filter_select="fft"
3149 showspectrum_filter_deps="avcodec"
3150 showspectrum_filter_select="fft"
3151 showspectrumpic_filter_deps="avcodec"
3152 showspectrumpic_filter_select="fft"
3153 signature_filter_deps="gpl avcodec avformat"
3154 smartblur_filter_deps="gpl swscale"
3155 sofalizer_filter_deps="netcdf avcodec"
3156 sofalizer_filter_select="fft"
3157 spectrumsynth_filter_deps="avcodec"
3158 spectrumsynth_filter_select="fft"
3159 spp_filter_deps="gpl avcodec"
3160 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3161 stereo3d_filter_deps="gpl"
3162 subtitles_filter_deps="avformat avcodec libass"
3163 super2xsai_filter_deps="gpl"
3164 pixfmts_super2xsai_test_deps="super2xsai_filter"
3165 tinterlace_filter_deps="gpl"
3166 tinterlace_merge_test_deps="tinterlace_filter"
3167 tinterlace_pad_test_deps="tinterlace_filter"
3168 uspp_filter_deps="gpl avcodec"
3169 vaguedenoiser_filter_deps="gpl"
3170 vidstabdetect_filter_deps="libvidstab"
3171 vidstabtransform_filter_deps="libvidstab"
3172 zmq_filter_deps="libzmq"
3173 zoompan_filter_deps="swscale"
3174 zscale_filter_deps="libzimg"
3175 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3176
3177 # examples
3178 avio_dir_cmd_deps="avformat avutil"
3179 avio_reading_deps="avformat avcodec avutil"
3180 decode_audio_example_deps="avcodec avutil"
3181 decode_video_example_deps="avcodec avutil"
3182 demuxing_decoding_example_deps="avcodec avformat avutil"
3183 encode_audio_example_deps="avcodec avutil"
3184 encode_video_example_deps="avcodec avutil"
3185 extract_mvs_example_deps="avcodec avformat avutil"
3186 filter_audio_example_deps="avfilter avutil"
3187 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3188 filtering_video_example_deps="avfilter avcodec avformat avutil"
3189 http_multiclient_example_deps="avformat avutil fork"
3190 metadata_example_deps="avformat avutil"
3191 muxing_example_deps="avcodec avformat avutil swscale"
3192 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
3193 remuxing_example_deps="avcodec avformat avutil"
3194 resampling_audio_example_deps="avutil swresample"
3195 scaling_video_example_deps="avutil swscale"
3196 transcode_aac_example_deps="avcodec avformat swresample"
3197 transcoding_example_deps="avfilter avcodec avformat avutil"
3198
3199 # libraries, in linking order
3200 avcodec_deps="avutil"
3201 avdevice_deps="avformat avcodec avutil"
3202 avfilter_deps="avutil"
3203 avformat_deps="avcodec avutil"
3204 avresample_deps="avutil"
3205 postproc_deps="avutil gpl"
3206 swresample_deps="avutil"
3207 swscale_deps="avutil"
3208
3209 # programs
3210 ffmpeg_deps="avcodec avfilter avformat swresample"
3211 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3212                null_filter
3213                trim_filter"
3214 ffplay_deps="avcodec avformat swscale swresample sdl2"
3215 ffplay_libs='$sdl2_libs'
3216 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3217 ffprobe_deps="avcodec avformat"
3218 ffserver_deps="avformat fork sarestart"
3219 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3220
3221 # documentation
3222 podpages_deps="perl"
3223 manpages_deps="perl pod2man"
3224 htmlpages_deps="perl"
3225 htmlpages_deps_any="makeinfo_html texi2html"
3226 txtpages_deps="perl makeinfo"
3227 doc_deps_any="manpages htmlpages podpages txtpages"
3228
3229 # default parameters
3230
3231 logfile="config.log"
3232
3233 # installation paths
3234 prefix_default="/usr/local"
3235 bindir_default='${prefix}/bin'
3236 datadir_default='${prefix}/share/ffmpeg'
3237 docdir_default='${prefix}/share/doc/ffmpeg'
3238 incdir_default='${prefix}/include'
3239 libdir_default='${prefix}/lib'
3240 mandir_default='${prefix}/share/man'
3241
3242 # toolchain
3243 ar_default="ar"
3244 cc_default="gcc"
3245 cxx_default="g++"
3246 host_cc_default="gcc"
3247 cp_f="cp -f"
3248 doxygen_default="doxygen"
3249 install="install"
3250 ln_s_default="ln -s -f"
3251 nm_default="nm -g"
3252 objformat="elf"
3253 pkg_config_default=pkg-config
3254 ranlib_default="ranlib"
3255 strip_default="strip"
3256 version_script='--version-script'
3257 yasmexe_default="yasm"
3258 windres_default="windres"
3259
3260 # OS
3261 target_os_default=$(tolower $(uname -s))
3262 host_os=$target_os_default
3263
3264 # machine
3265 if test "$target_os_default" = aix; then
3266     arch_default=$(uname -p)
3267     strip_default="strip -X32_64"
3268 else
3269     arch_default=$(uname -m)
3270 fi
3271 cpu="generic"
3272 intrinsics="none"
3273
3274 # configurable options
3275 enable $PROGRAM_LIST
3276 enable $DOCUMENT_LIST
3277 enable $EXAMPLE_LIST
3278 enable $(filter_out avresample $LIBRARY_LIST)
3279 enable stripping
3280
3281 enable asm
3282 enable debug
3283 enable doc
3284 enable faan faandct faanidct
3285 enable optimizations
3286 enable runtime_cpudetect
3287 enable safe_bitstream_reader
3288 enable static
3289 enable swscale_alpha
3290 enable valgrind_backtrace
3291
3292 sws_max_filter_size_default=256
3293 set_default sws_max_filter_size
3294
3295 # build settings
3296 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3297 LIBPREF="lib"
3298 LIBSUF=".a"
3299 FULLNAME='$(NAME)$(BUILDSUF)'
3300 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3301 SLIBPREF="lib"
3302 SLIBSUF=".so"
3303 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3304 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3305 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3306 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3307 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3308 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3309 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3310
3311 asflags_filter=echo
3312 cflags_filter=echo
3313 ldflags_filter=echo
3314
3315 AS_C='-c'
3316 AS_O='-o $@'
3317 CC_C='-c'
3318 CC_E='-E -o $@'
3319 CC_O='-o $@'
3320 CXX_C='-c'
3321 CXX_O='-o $@'
3322 OBJCC_C='-c'
3323 OBJCC_E='-E -o $@'
3324 OBJCC_O='-o $@'
3325 LD_O='-o $@'
3326 LD_LIB='-l%'
3327 LD_PATH='-L'
3328 HOSTCC_C='-c'
3329 HOSTCC_E='-E -o $@'
3330 HOSTCC_O='-o $@'
3331 HOSTLD_O='-o $@'
3332
3333 host_libs='-lm'
3334 host_cflags_filter=echo
3335 host_ldflags_filter=echo
3336
3337 target_path='$(CURDIR)'
3338
3339 # since the object filename is not given with the -MM flag, the compiler
3340 # is only able to print the basename, and we must add the path ourselves
3341 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3342 DEPFLAGS='-MM'
3343
3344 # find source path
3345 if test -f configure; then
3346     source_path=.
3347 else
3348     source_path=$(cd $(dirname "$0"); pwd)
3349     case "$source_path" in
3350         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3351     esac
3352     test -e "$source_path/config.h" &&
3353         die "Out of tree builds are impossible with config.h in source dir."
3354 fi
3355
3356 for v in "$@"; do
3357     r=${v#*=}
3358     l=${v%"$r"}
3359     r=$(sh_quote "$r")
3360     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3361 done
3362
3363 find_things(){
3364     thing=$1
3365     pattern=$2
3366     file=$source_path/$3
3367     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3368 }
3369
3370 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3371 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3372 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3373 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3374 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3375 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3376 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3377 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3378 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3379
3380 find_things_extern(){
3381     thing=$1
3382     pattern=$2
3383     file=$source_path/$3
3384     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3385 }
3386
3387 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3388 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3389
3390 ALL_COMPONENTS="
3391     $BSF_LIST
3392     $DECODER_LIST
3393     $DEMUXER_LIST
3394     $ENCODER_LIST
3395     $FILTER_LIST
3396     $HWACCEL_LIST
3397     $INDEV_LIST
3398     $MUXER_LIST
3399     $OUTDEV_LIST
3400     $PARSER_LIST
3401     $PROTOCOL_LIST
3402 "
3403
3404 for n in $COMPONENT_LIST; do
3405     v=$(toupper ${n%s})_LIST
3406     eval enable \$$v
3407     eval ${n}_if_any="\$$v"
3408 done
3409
3410 enable $ARCH_EXT_LIST
3411
3412 die_unknown(){
3413     echo "Unknown option \"$1\"."
3414     echo "See $0 --help for available options."
3415     exit 1
3416 }
3417
3418 print_in_columns() {
3419     cols=$(expr $ncols / 24)
3420     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3421 }
3422
3423 show_list() {
3424     suffix=_$1
3425     shift
3426     echo $* | sed s/$suffix//g | print_in_columns
3427     exit 0
3428 }
3429
3430 rand_list(){
3431     IFS=', '
3432     set -- $*
3433     unset IFS
3434     for thing; do
3435         comp=${thing%:*}
3436         prob=${thing#$comp}
3437         prob=${prob#:}
3438         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3439         echo "prob ${prob:-0.5}"
3440         printf '%s\n' $comp
3441     done
3442 }
3443
3444 do_random(){
3445     action=$1
3446     shift
3447     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3448     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3449 }
3450
3451 for opt do
3452     optval="${opt#*=}"
3453     case "$opt" in
3454         --extra-ldflags=*)
3455             add_ldflags $optval
3456         ;;
3457         --extra-ldexeflags=*)
3458             add_ldexeflags $optval
3459         ;;
3460         --extra-ldlibflags=*)
3461             add_ldlibflags $optval
3462         ;;
3463         --extra-libs=*)
3464             add_extralibs $optval
3465         ;;
3466         --disable-devices)
3467             disable $INDEV_LIST $OUTDEV_LIST
3468         ;;
3469         --enable-debug=*)
3470             debuglevel="$optval"
3471         ;;
3472         --disable-programs)
3473             disable $PROGRAM_LIST
3474         ;;
3475         --disable-everything)
3476             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3477         ;;
3478         --disable-all)
3479             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3480             disable $LIBRARY_LIST $PROGRAM_LIST doc
3481             enable avutil
3482         ;;
3483         --enable-random|--disable-random)
3484             action=${opt%%-random}
3485             do_random ${action#--} $COMPONENT_LIST
3486         ;;
3487         --enable-random=*|--disable-random=*)
3488             action=${opt%%-random=*}
3489             do_random ${action#--} $optval
3490         ;;
3491         --enable-*=*|--disable-*=*)
3492             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3493             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3494             eval list=\$$(toupper $thing)_LIST
3495             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3496             list=$(filter "$name" $list)
3497             [ "$list" = "" ] && warn "Option $opt did not match anything"
3498             $action $list
3499         ;;
3500         --enable-?*|--disable-?*)
3501             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3502             if is_in $option $COMPONENT_LIST; then
3503                 test $action = disable && action=unset
3504                 eval $action \$$(toupper ${option%s})_LIST
3505             elif is_in $option $CMDLINE_SELECT; then
3506                 $action $option
3507             else
3508                 die_unknown $opt
3509             fi
3510         ;;
3511         --list-*)
3512             NAME="${opt#--list-}"
3513             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3514             NAME=${NAME%s}
3515             eval show_list $NAME \$$(toupper $NAME)_LIST
3516         ;;
3517         --help|-h) show_help
3518         ;;
3519         --quiet|-q) quiet=yes
3520         ;;
3521         --fatal-warnings) enable fatal_warnings
3522         ;;
3523         *)
3524             optname="${opt%%=*}"
3525             optname="${optname#--}"
3526             optname=$(echo "$optname" | sed 's/-/_/g')
3527             if is_in $optname $CMDLINE_SET; then
3528                 eval $optname='$optval'
3529             elif is_in $optname $CMDLINE_APPEND; then
3530                 append $optname "$optval"
3531             else
3532                 die_unknown $opt
3533             fi
3534         ;;
3535     esac
3536 done
3537
3538 for e in $env; do
3539     eval "export $e"
3540 done
3541
3542 # Mark specifically enabled, but normally autodetected libraries as requested.
3543 for lib in $AUTODETECT_LIBS; do
3544     enabled $lib && request $lib
3545 done
3546
3547 # Enable platform codecs by default.
3548 enable_weak audiotoolbox
3549
3550 # Enable hwaccels by default.
3551 enable_weak d3d11va dxva2 vaapi vda vdpau videotoolbox_hwaccel xvmc
3552 enable_weak xlib
3553
3554 enable_weak cuda cuvid nvenc vda_framework videotoolbox videotoolbox_encoder
3555
3556 disabled logging && logfile=/dev/null
3557
3558 die_license_disabled() {
3559     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3560 }
3561
3562 die_license_disabled_gpl() {
3563     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3564 }
3565
3566 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3567 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3568
3569 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3570 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3571
3572 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3573
3574 # Disable all the library-specific components if the library itself
3575 # is disabled, see AVCODEC_LIST and following _LIST variables.
3576
3577 disable_components(){
3578     disabled ${1} && disable $(
3579         eval components="\$$(toupper ${1})_COMPONENTS"
3580         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3581     )
3582 }
3583
3584 map 'disable_components $v' $LIBRARY_LIST
3585
3586 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3587 set >> $logfile
3588
3589 test -n "$valgrind" && toolchain="valgrind-memcheck"
3590
3591 case "$toolchain" in
3592     *-asan)
3593         cc_default="${toolchain%-asan}"
3594         add_cflags  -fsanitize=address
3595         add_ldflags -fsanitize=address
3596     ;;
3597     *-msan)
3598         cc_default="${toolchain%-msan}"
3599         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3600         add_ldflags -fsanitize=memory
3601     ;;
3602     *-tsan)
3603         cc_default="${toolchain%-tsan}"
3604         add_cflags  -fsanitize=thread -fPIE
3605         add_ldflags -fsanitize=thread -pie
3606         case "$toolchain" in
3607             gcc-tsan)
3608                 add_cflags  -fPIC
3609                 add_ldflags -fPIC
3610                 ;;
3611         esac
3612     ;;
3613     *-usan)
3614         cc_default="${toolchain%-usan}"
3615         add_cflags  -fsanitize=undefined
3616         add_ldflags -fsanitize=undefined
3617     ;;
3618     valgrind-*)
3619         target_exec_default="valgrind"
3620         case "$toolchain" in
3621             valgrind-massif)
3622                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3623                 ;;
3624             valgrind-memcheck)
3625                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3626                 ;;
3627         esac
3628     ;;
3629     msvc)
3630         # Check whether the current MSVC version needs the C99 converter.
3631         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3632         # support enough of C99 to build ffmpeg. Default to the new
3633         # behaviour if the regexp was unable to match anything, since this
3634         # successfully parses the version number of existing supported
3635         # versions that require the converter (MSVC 2010 and 2012).
3636         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3637         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3638             cc_default="cl"
3639         else
3640             cc_default="c99wrap cl"
3641         fi
3642         ld_default="$source_path/compat/windows/mslink"
3643         nm_default="dumpbin -symbols"
3644         ar_default="lib"
3645         case "$arch" in
3646         arm*)
3647             as_default="armasm"
3648             ;;
3649         esac
3650         target_os_default="win32"
3651         # Use a relative path for TMPDIR. This makes sure all the
3652         # ffconf temp files are written with a relative path, avoiding
3653         # issues with msys/win32 path conversion for MSVC parameters
3654         # such as -Fo<file> or -out:<file>.
3655         TMPDIR=.
3656     ;;
3657     icl)
3658         cc_default="icl"
3659         ld_default="xilink"
3660         nm_default="dumpbin -symbols"
3661         ar_default="xilib"
3662         target_os_default="win32"
3663         TMPDIR=.
3664     ;;
3665     gcov)
3666         add_cflags  -fprofile-arcs -ftest-coverage
3667         add_ldflags -fprofile-arcs -ftest-coverage
3668     ;;
3669     llvm-cov)
3670         add_cflags -fprofile-arcs -ftest-coverage
3671         add_ldflags --coverage
3672     ;;
3673     hardened)
3674         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3675         add_cflags   -fno-strict-overflow -fstack-protector-all
3676         add_ldflags  -Wl,-z,relro -Wl,-z,now
3677         add_cflags   -fPIE
3678         add_ldexeflags -fPIE -pie
3679     ;;
3680     ?*)
3681         die "Unknown toolchain $toolchain"
3682     ;;
3683 esac
3684
3685 test -n "$cross_prefix" && enable cross_compile
3686
3687 if enabled cross_compile; then
3688     test -n "$arch" && test -n "$target_os" ||
3689         die "Must specify target arch and OS when cross-compiling"
3690 fi
3691
3692 ar_default="${cross_prefix}${ar_default}"
3693 cc_default="${cross_prefix}${cc_default}"
3694 cxx_default="${cross_prefix}${cxx_default}"
3695 nm_default="${cross_prefix}${nm_default}"
3696 pkg_config_default="${cross_prefix}${pkg_config_default}"
3697 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3698     ranlib_default="${cross_prefix}${ranlib_default} -D"
3699 else
3700     ranlib_default="${cross_prefix}${ranlib_default}"
3701 fi
3702 strip_default="${cross_prefix}${strip_default}"
3703 windres_default="${cross_prefix}${windres_default}"
3704
3705 sysinclude_default="${sysroot}/usr/include"
3706
3707 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3708     target_exec target_os yasmexe
3709 enabled cross_compile || host_cc_default=$cc
3710 set_default host_cc
3711
3712 pkg_config_fail_message=""
3713 if ! $pkg_config --version >/dev/null 2>&1; then
3714     warn "$pkg_config not found, library detection may fail."
3715     pkg_config=false
3716 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3717     pkg_config_fail_message="
3718 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3719 fi
3720
3721 if test $doxygen != $doxygen_default && \
3722   ! $doxygen --version >/dev/null 2>&1; then
3723     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3724 fi
3725
3726 exesuf() {
3727     case $1 in
3728         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3729     esac
3730 }
3731
3732 EXESUF=$(exesuf $target_os)
3733 HOSTEXESUF=$(exesuf $host_os)
3734
3735 # set temporary file name
3736 : ${TMPDIR:=$TEMPDIR}
3737 : ${TMPDIR:=$TMP}
3738 : ${TMPDIR:=/tmp}
3739
3740 if [ -n "$tempprefix" ] ; then
3741     mktemp(){
3742         echo $tempprefix.${HOSTNAME}.${UID}
3743     }
3744 elif ! check_cmd mktemp -u XXXXXX; then
3745     # simple replacement for missing mktemp
3746     # NOT SAFE FOR GENERAL USE
3747     mktemp(){
3748         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3749     }
3750 fi
3751
3752 tmpfile(){
3753     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3754         (set -C; exec > $tmp) 2>/dev/null ||
3755         die "Unable to create temporary file in $TMPDIR."
3756     append TMPFILES $tmp
3757     eval $1=$tmp
3758 }
3759
3760 trap 'rm -f -- $TMPFILES' EXIT
3761
3762 tmpfile TMPASM .asm
3763 tmpfile TMPC   .c
3764 tmpfile TMPCPP .cpp
3765 tmpfile TMPE   $EXESUF
3766 tmpfile TMPH   .h
3767 tmpfile TMPM   .m
3768 tmpfile TMPO   .o
3769 tmpfile TMPS   .S
3770 tmpfile TMPSH  .sh
3771 tmpfile TMPV   .ver
3772
3773 unset -f mktemp
3774
3775 chmod +x $TMPE
3776
3777 # make sure we can execute files in $TMPDIR
3778 cat > $TMPSH 2>> $logfile <<EOF
3779 #! /bin/sh
3780 EOF
3781 chmod +x $TMPSH >> $logfile 2>&1
3782 if ! $TMPSH >> $logfile 2>&1; then
3783     cat <<EOF
3784 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3785 variable to another directory and make sure that it is not mounted noexec.
3786 EOF
3787     die "Sanity test failed."
3788 fi
3789
3790 armasm_flags(){
3791     for flag; do
3792         case $flag in
3793             # Filter out MSVC cl.exe options from cflags that shouldn't
3794             # be passed to gas-preprocessor
3795             -M[TD]*)                                            ;;
3796             *)                  echo $flag                      ;;
3797         esac
3798    done
3799 }
3800
3801 ccc_flags(){
3802     for flag; do
3803         case $flag in
3804             -std=c99)           echo -c99                       ;;
3805             -mcpu=*)            echo -arch ${flag#*=}           ;;
3806             -mieee)             echo -ieee                      ;;
3807             -O*|-fast)          echo $flag                      ;;
3808             -fno-math-errno)    echo -assume nomath_errno       ;;
3809             -g)                 echo -g3                        ;;
3810             -Wall)              echo -msg_enable level2         ;;
3811             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3812             -Wl,*)              echo $flag                      ;;
3813             -f*|-W*)                                            ;;
3814             *)                  echo $flag                      ;;
3815         esac
3816    done
3817 }
3818
3819 cparser_flags(){
3820     for flag; do
3821         case $flag in
3822             -Wno-switch)             echo -Wno-switch-enum ;;
3823             -Wno-format-zero-length) ;;
3824             -Wdisabled-optimization) ;;
3825             -Wno-pointer-sign)       echo -Wno-other ;;
3826             *)                       echo $flag ;;
3827         esac
3828     done
3829 }
3830
3831 msvc_common_flags(){
3832     for flag; do
3833         case $flag in
3834             # In addition to specifying certain flags under the compiler
3835             # specific filters, they must be specified here as well or else the
3836             # generic catch all at the bottom will print the original flag.
3837             -Wall)                ;;
3838             -std=c99)             ;;
3839             # Common flags
3840             -fomit-frame-pointer) ;;
3841             -g)                   echo -Z7 ;;
3842             -fno-math-errno)      ;;
3843             -fno-common)          ;;
3844             -fno-signed-zeros)    ;;
3845             -fPIC)                ;;
3846             -mthumb)              ;;
3847             -march=*)             ;;
3848             -lz)                  echo zlib.lib ;;
3849             -lavifil32)           echo vfw32.lib ;;
3850             -lavicap32)           echo vfw32.lib user32.lib ;;
3851             -lx264)               echo libx264.lib ;;
3852             -l*)                  echo ${flag#-l}.lib ;;
3853             -LARGEADDRESSAWARE)   echo $flag ;;
3854             -L*)                  echo -libpath:${flag#-L} ;;
3855             *)                    echo $flag ;;
3856         esac
3857     done
3858 }
3859
3860 msvc_flags(){
3861     msvc_common_flags "$@"
3862     for flag; do
3863         case $flag in
3864             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3865                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3866                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3867                                        -wd4307 \
3868                                        -wd4273 -wd4554 -wd4701 ;;
3869         esac
3870     done
3871 }
3872
3873 icl_flags(){
3874     msvc_common_flags "$@"
3875     for flag; do
3876         case $flag in
3877             # Despite what Intel's documentation says -Wall, which is supported
3878             # on Windows, does enable remarks so disable them here.
3879             -Wall)                echo $flag -Qdiag-disable:remark ;;
3880             -std=c99)             echo -Qstd=c99 ;;
3881             -flto)                echo -ipo ;;
3882         esac
3883     done
3884 }
3885
3886 icc_flags(){
3887     for flag; do
3888         case $flag in
3889             -flto)                echo -ipo ;;
3890             *)                    echo $flag ;;
3891         esac
3892     done
3893 }
3894
3895 pgi_flags(){
3896     for flag; do
3897         case $flag in
3898             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3899             -fomit-frame-pointer) echo -Mnoframe ;;
3900             -g)                   echo -gopt ;;
3901             *)                    echo $flag ;;
3902         esac
3903     done
3904 }
3905
3906 suncc_flags(){
3907     for flag; do
3908         case $flag in
3909             -march=*|-mcpu=*)
3910                 case "${flag#*=}" in
3911                     native)                   echo -xtarget=native       ;;
3912                     v9|niagara)               echo -xarch=sparc          ;;
3913                     ultrasparc)               echo -xarch=sparcvis       ;;
3914                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3915                     i586|pentium)             echo -xchip=pentium        ;;
3916                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3917                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3918                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3919                     pentium4*)          echo -xtarget=pentium4           ;;
3920                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3921                     *-sse3)             echo -xarch=sse3                 ;;
3922                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3923                     bonnell)                   echo -xarch=ssse3         ;;
3924                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3925                     westmere)                  echo -xtarget=westmere    ;;
3926                     silvermont)                echo -xarch=sse4_2        ;;
3927                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3928                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
3929                                                echo -xarch=avx           ;;
3930                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3931                     btver1)                    echo -xarch=amdsse4a      ;;
3932                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
3933                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3934                     k8|opteron|athlon64|athlon-fx)
3935                                                echo -xarch=sse2a         ;;
3936                     athlon*)                   echo -xarch=pentium_proa  ;;
3937                 esac
3938                 ;;
3939             -std=c99)             echo -xc99              ;;
3940             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3941             -fPIC)                echo -KPIC -xcode=pic32 ;;
3942             -W*,*)                echo $flag              ;;
3943             -f*-*|-W*|-mimpure-text)                      ;;
3944             -shared)              echo -G                 ;;
3945             *)                    echo $flag              ;;
3946         esac
3947     done
3948 }
3949
3950 tms470_flags(){
3951     for flag; do
3952         case $flag in
3953             -march=*|-mcpu=*)
3954                 case "${flag#*=}" in
3955                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3956                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3957                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3958                     armv6*|arm11*)          echo -mv=6   ;;
3959                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3960                                             echo -mv=5e  ;;
3961                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3962                 esac
3963                 ;;
3964             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3965             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3966             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3967             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3968             -msoft-float)   echo --float_support=vfplib       ;;
3969             -O[0-3]|-mf=*)  echo $flag                        ;;
3970             -g)             echo -g -mn                       ;;
3971             -pds=*)         echo $flag                        ;;
3972             -D*|-I*)        echo $flag                        ;;
3973             --gcc|--abi=*)  echo $flag                        ;;
3974             -me)            echo $flag                        ;;
3975         esac
3976     done
3977 }
3978
3979 probe_cc(){
3980     pfx=$1
3981     _cc=$2
3982     first=$3
3983
3984     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3985     unset _ld_o _ldflags _ld_lib _ld_path
3986     unset _depflags _DEPCMD _DEPFLAGS
3987     _flags_filter=echo
3988
3989     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3990         true # no-op to avoid reading stdin in following checks
3991     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3992         _type=llvm_gcc
3993         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3994         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3995         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3996         _cflags_speed='-O3'
3997         _cflags_size='-Os'
3998     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3999         _type=gcc
4000         gcc_version=$($_cc --version | head -n1)
4001         gcc_basever=$($_cc -dumpversion)
4002         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4003         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4004         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4005         case $gcc_basever in
4006             2) ;;
4007             2.*) ;;
4008             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4009         esac
4010         if [ "$first" = true ]; then
4011             case $gcc_basever in
4012                 4.2*)
4013                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4014             esac
4015         fi
4016         _cflags_speed='-O3'
4017         _cflags_size='-Os'
4018     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4019         _type=icc
4020         _ident=$($_cc --version | head -n1)
4021         _depflags='-MMD'
4022         _cflags_speed='-O3'
4023         _cflags_size='-Os'
4024         _cflags_noopt='-O1'
4025         _flags_filter=icc_flags
4026     elif $_cc -v 2>&1 | grep -q xlc; then
4027         _type=xlc
4028         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4029         _cflags_speed='-O5'
4030         _cflags_size='-O5 -qcompact'
4031     elif $_cc -V 2>/dev/null | grep -q Compaq; then
4032         _type=ccc
4033         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
4034         _DEPFLAGS='-M'
4035         _cflags_speed='-fast'
4036         _cflags_size='-O1'
4037         _flags_filter=ccc_flags
4038     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4039         test -d "$sysroot" || die "No valid sysroot specified."
4040         _type=armcc
4041         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4042         armcc_conf="$PWD/armcc.conf"
4043         $_cc --arm_linux_configure                 \
4044              --arm_linux_config_file="$armcc_conf" \
4045              --configure_sysroot="$sysroot"        \
4046              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4047              die "Error creating armcc configuration file."
4048         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4049         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4050         as_default="${cross_prefix}gcc"
4051         _depflags='-MMD'
4052         _cflags_speed='-O3'
4053         _cflags_size='-Os'
4054     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
4055         _type=tms470
4056         _ident=$($_cc -version | head -n1 | tr -s ' ')
4057         _flags='--gcc --abi=eabi -me'
4058         _cc_e='-ppl -fe=$@'
4059         _cc_o='-fe=$@'
4060         _depflags='-ppa -ppd=$(@:.o=.d)'
4061         _cflags_speed='-O3 -mf=5'
4062         _cflags_size='-O3 -mf=2'
4063         _flags_filter=tms470_flags
4064     elif $_cc -v 2>&1 | grep -q clang; then
4065         _type=clang
4066         _ident=$($_cc --version 2>/dev/null | head -n1)
4067         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4068         _cflags_speed='-O3'
4069         _cflags_size='-Oz'
4070     elif $_cc -V 2>&1 | grep -q Sun; then
4071         _type=suncc
4072         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4073         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4074         _DEPFLAGS='-xM1 -xc99'
4075         _ldflags='-std=c99'
4076         _cflags_speed='-O5'
4077         _cflags_size='-O5 -xspace'
4078         _flags_filter=suncc_flags
4079     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4080         _type=pathscale
4081         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4082         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4083         _cflags_speed='-O2'
4084         _cflags_size='-Os'
4085         _flags_filter='filter_out -Wdisabled-optimization'
4086     elif $_cc -v 2>&1 | grep -q Open64; then
4087         _type=open64
4088         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4089         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4090         _cflags_speed='-O2'
4091         _cflags_size='-Os'
4092         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4093     elif $_cc -V 2>&1 | grep -q Portland; then
4094         _type=pgi
4095         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
4096         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
4097         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
4098         _cflags_size="-O2 -Munroll=c:1 $opt_common"
4099         _cflags_noopt="-O"
4100         _flags_filter=pgi_flags
4101     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4102         _type=armasm
4103         _ident=$($_cc | head -n1)
4104         # 4509: "This form of conditional instruction is deprecated"
4105         _flags="-nologo -ignore 4509"
4106         _flags_filter=armasm_flags
4107     elif $_cc 2>&1 | grep -q Intel; then
4108         _type=icl
4109         _ident=$($_cc 2>&1 | head -n1)
4110         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4111         # Not only is O3 broken on 13.x+ but it is slower on all previous
4112         # versions (tested) as well.
4113         _cflags_speed="-O2"
4114         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4115         if $_cc 2>&1 | grep -q Linker; then
4116             _ld_o='-out:$@'
4117         else
4118             _ld_o='-Fe$@'
4119         fi
4120         _cc_o='-Fo$@'
4121         _cc_e='-P'
4122         _flags_filter=icl_flags
4123         _ld_lib='lib%.a'
4124         _ld_path='-libpath:'
4125         # -Qdiag-error to make icl error when seeing certain unknown arguments
4126         _flags='-nologo -Qdiag-error:4044,10157'
4127         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4128         # with MSVC which enables it by default.
4129         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4130         disable stripping
4131     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4132         # lld can emulate multiple different linkers; in ms link.exe mode,
4133         # the -? parameter gives the help output which contains an identifyable
4134         # string, while it gives an error in other modes.
4135         _type=lld-link
4136         # The link.exe mode doesn't have a switch for getting the version,
4137         # but we can force it back to gnu mode and get the version from there.
4138         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4139         _ld_o='-out:$@'
4140         _flags_filter=msvc_flags
4141         _ld_lib='lib%.a'
4142         _ld_path='-libpath:'
4143     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4144         _type=msvc
4145         _ident=$($_cc 2>&1 | head -n1)
4146         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4147         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4148         _cflags_speed="-O2"
4149         _cflags_size="-O1"
4150         if $_cc -nologo- 2>&1 | grep -q Linker; then
4151             _ld_o='-out:$@'
4152         else
4153             _ld_o='-Fe$@'
4154         fi
4155         _cc_o='-Fo$@'
4156         _cc_e='-P -Fi$@'
4157         _flags_filter=msvc_flags
4158         _ld_lib='lib%.a'
4159         _ld_path='-libpath:'
4160         _flags='-nologo'
4161         disable stripping
4162     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4163         _type=cparser
4164         _ident=$($_cc --version | head -n1)
4165         _depflags='-MMD'
4166         _cflags_speed='-O4'
4167         _cflags_size='-O2'
4168         _flags_filter=cparser_flags
4169     fi
4170
4171     eval ${pfx}_type=\$_type
4172     eval ${pfx}_ident=\$_ident
4173 }
4174
4175 set_ccvars(){
4176     eval ${1}_C=\${_cc_c-\${${1}_C}}
4177     eval ${1}_E=\${_cc_e-\${${1}_E}}
4178     eval ${1}_O=\${_cc_o-\${${1}_O}}
4179
4180     if [ -n "$_depflags" ]; then
4181         eval ${1}_DEPFLAGS=\$_depflags
4182     else
4183         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4184         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4185         eval DEP${1}FLAGS=\$_flags
4186     fi
4187 }
4188
4189 probe_cc cc "$cc" "true"
4190 cflags_filter=$_flags_filter
4191 cflags_speed=$_cflags_speed
4192 cflags_size=$_cflags_size
4193 cflags_noopt=$_cflags_noopt
4194 add_cflags $_flags $_cflags
4195 cc_ldflags=$_ldflags
4196 set_ccvars CC
4197
4198 probe_cc hostcc "$host_cc"
4199 host_cflags_filter=$_flags_filter
4200 add_host_cflags  $_flags $_cflags
4201 set_ccvars HOSTCC
4202
4203 test -n "$cc_type" && enable $cc_type ||
4204     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4205
4206 : ${as_default:=$cc}
4207 : ${objcc_default:=$cc}
4208 : ${dep_cc_default:=$cc}
4209 : ${ld_default:=$cc}
4210 : ${host_ld_default:=$host_cc}
4211 set_default ar as objcc dep_cc ld ln_s host_ld windres
4212
4213 probe_cc as "$as"
4214 asflags_filter=$_flags_filter
4215 add_asflags $_flags $_cflags
4216 set_ccvars AS
4217
4218 probe_cc objcc "$objcc"
4219 objcflags_filter=$_flags_filter
4220 add_objcflags $_flags $_cflags
4221 set_ccvars OBJC
4222
4223 probe_cc ld "$ld"
4224 ldflags_filter=$_flags_filter
4225 add_ldflags $_flags $_ldflags
4226 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4227 LD_O=${_ld_o-$LD_O}
4228 LD_LIB=${_ld_lib-$LD_LIB}
4229 LD_PATH=${_ld_path-$LD_PATH}
4230
4231 probe_cc hostld "$host_ld"
4232 host_ldflags_filter=$_flags_filter
4233 add_host_ldflags $_flags $_ldflags
4234 HOSTLD_O=${_ld_o-$HOSTLD_O}
4235
4236 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4237     probe_cc depcc "$dep_cc"
4238     CCDEP=${_DEPCMD:-$DEPCMD}
4239     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4240     DEPCCFLAGS=$_flags
4241 fi
4242
4243 if $ar 2>&1 | grep -q Microsoft; then
4244     arflags="-nologo"
4245     ar_o='-out:$@'
4246 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
4247     arflags="rq"
4248     ar_o='$@'
4249 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
4250     arflags='-Xany -r -c'
4251     ar_o='$@'
4252 elif $ar 2>&1 | grep -q "\[D\] "; then
4253     arflags="rcD"
4254     ar_o='$@'
4255 else
4256     arflags="rc"
4257     ar_o='$@'
4258 fi
4259
4260 add_cflags $extra_cflags
4261 add_cxxflags $extra_cxxflags
4262 add_objcflags $extra_objcflags
4263 add_asflags $extra_cflags
4264
4265 if test -n "$sysroot"; then
4266     case "$cc_type" in
4267         gcc|llvm_gcc|clang)
4268             add_cppflags --sysroot="$sysroot"
4269             add_ldflags --sysroot="$sysroot"
4270 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
4271             add_cppflags -isysroot "$sysroot"
4272             add_ldflags -isysroot "$sysroot"
4273         ;;
4274         tms470)
4275             add_cppflags -I"$sysinclude"
4276             add_ldflags  --sysroot="$sysroot"
4277         ;;
4278     esac
4279 fi
4280
4281 if test "$cpu" = host; then
4282     enabled cross_compile &&
4283         die "--cpu=host makes no sense when cross-compiling."
4284
4285     case "$cc_type" in
4286         gcc|llvm_gcc)
4287             check_native(){
4288                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4289                 sed -n "/cc1.*$1=/{
4290                             s/.*$1=\\([^ ]*\\).*/\\1/
4291                             p
4292                             q
4293                         }" $TMPE
4294             }
4295             cpu=$(check_native -march || check_native -mcpu)
4296         ;;
4297         clang)
4298             check_native(){
4299                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4300                 sed -n "/cc1.*-target-cpu /{
4301                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4302                             p
4303                             q
4304                         }" $TMPE
4305             }
4306             cpu=$(check_native -march)
4307         ;;
4308     esac
4309
4310     test "${cpu:-host}" = host &&
4311         die "--cpu=host not supported with compiler $cc"
4312 fi
4313
4314 # Deal with common $arch aliases
4315 case "$arch" in
4316     aarch64|arm64)
4317         arch="aarch64"
4318     ;;
4319     arm*|iPad*|iPhone*)
4320         arch="arm"
4321     ;;
4322     mips*|IP*)
4323         case "$arch" in
4324         *el)
4325             add_cppflags -EL
4326             add_ldflags -EL
4327         ;;
4328         *eb)
4329             add_cppflags -EB
4330             add_ldflags -EB
4331         ;;
4332         esac
4333         arch="mips"
4334     ;;
4335     parisc*|hppa*)
4336         arch="parisc"
4337     ;;
4338     "Power Macintosh"|ppc*|powerpc*)
4339         arch="ppc"
4340     ;;
4341     s390|s390x)
4342         arch="s390"
4343     ;;
4344     sh4|sh)
4345         arch="sh4"
4346     ;;
4347     sun4*|sparc*)
4348         arch="sparc"
4349     ;;
4350     tilegx|tile-gx)
4351         arch="tilegx"
4352     ;;
4353     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4354         arch="x86"
4355     ;;
4356 esac
4357
4358 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4359 enable $arch
4360
4361 # Add processor-specific flags
4362 if enabled aarch64; then
4363
4364     case $cpu in
4365         armv*)
4366             cpuflags="-march=$cpu"
4367         ;;
4368         *)
4369             cpuflags="-mcpu=$cpu"
4370         ;;
4371     esac
4372
4373 elif enabled alpha; then
4374
4375     cpuflags="-mcpu=$cpu"
4376
4377 elif enabled arm; then
4378
4379     check_arm_arch() {
4380         check_cpp_condition stddef.h \
4381             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4382             $cpuflags
4383     }
4384
4385     probe_arm_arch() {
4386         if   check_arm_arch 4;        then echo armv4
4387         elif check_arm_arch 4T;       then echo armv4t
4388         elif check_arm_arch 5;        then echo armv5
4389         elif check_arm_arch 5E;       then echo armv5e
4390         elif check_arm_arch 5T;       then echo armv5t
4391         elif check_arm_arch 5TE;      then echo armv5te
4392         elif check_arm_arch 5TEJ;     then echo armv5te
4393         elif check_arm_arch 6;        then echo armv6
4394         elif check_arm_arch 6J;       then echo armv6j
4395         elif check_arm_arch 6K;       then echo armv6k
4396         elif check_arm_arch 6Z;       then echo armv6z
4397         elif check_arm_arch 6ZK;      then echo armv6zk
4398         elif check_arm_arch 6T2;      then echo armv6t2
4399         elif check_arm_arch 7;        then echo armv7
4400         elif check_arm_arch 7A  7_A;  then echo armv7-a
4401         elif check_arm_arch 7S;       then echo armv7-a
4402         elif check_arm_arch 7R  7_R;  then echo armv7-r
4403         elif check_arm_arch 7M  7_M;  then echo armv7-m
4404         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4405         elif check_arm_arch 8A  8_A;  then echo armv8-a
4406         fi
4407     }
4408
4409     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4410
4411     case $cpu in
4412         armv*)
4413             cpuflags="-march=$cpu"
4414             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4415         ;;
4416         *)
4417             cpuflags="-mcpu=$cpu"
4418             case $cpu in
4419                 cortex-a*)                               subarch=armv7a  ;;
4420                 cortex-r*)                               subarch=armv7r  ;;
4421                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4422                 arm11*)                                  subarch=armv6   ;;
4423                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4424                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4425                 *)                             subarch=$(probe_arm_arch) ;;
4426             esac
4427         ;;
4428     esac
4429
4430     case "$subarch" in
4431         armv5t*)    enable fast_clz                ;;
4432         armv[6-8]*)
4433             enable fast_clz
4434             disabled fast_unaligned || enable fast_unaligned
4435             ;;
4436     esac
4437
4438 elif enabled avr32; then
4439
4440     case $cpu in
4441         ap7[02]0[0-2])
4442             subarch="avr32_ap"
4443             cpuflags="-mpart=$cpu"
4444         ;;
4445         ap)
4446             subarch="avr32_ap"
4447             cpuflags="-march=$cpu"
4448         ;;
4449         uc3[ab]*)
4450             subarch="avr32_uc"
4451             cpuflags="-mcpu=$cpu"
4452         ;;
4453         uc)
4454             subarch="avr32_uc"
4455             cpuflags="-march=$cpu"
4456         ;;
4457     esac
4458
4459 elif enabled bfin; then
4460
4461     cpuflags="-mcpu=$cpu"
4462
4463 elif enabled mips; then
4464
4465     cpuflags="-march=$cpu"
4466
4467     if [ "$cpu" != "generic" ]; then
4468         disable mips32r2
4469         disable mips32r5
4470         disable mips64r2
4471         disable mips32r6
4472         disable mips64r6
4473         disable loongson2
4474         disable loongson3
4475
4476         case $cpu in
4477             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4478                 enable mips32r2
4479                 disable msa
4480             ;;
4481             p5600|i6400|p6600)
4482                 disable mipsdsp
4483                 disable mipsdspr2
4484             ;;
4485             loongson*)
4486                 enable loongson2
4487                 enable loongson3
4488                 enable local_aligned_8 local_aligned_16 local_aligned_32
4489                 enable simd_align_16
4490                 enable fast_64bit
4491                 enable fast_clz
4492                 enable fast_cmov
4493                 enable fast_unaligned
4494                 disable aligned_stack
4495                 disable mipsfpu
4496                 disable mipsdsp
4497                 disable mipsdspr2
4498                 case $cpu in
4499                     loongson3*)
4500                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4501                     ;;
4502                     loongson2e)
4503                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4504                     ;;
4505                     loongson2f)
4506                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4507                     ;;
4508                 esac
4509             ;;
4510             *)
4511                 # Unknown CPU. Disable everything.
4512                 warn "unknown CPU. Disabling all MIPS optimizations."
4513                 disable mipsfpu
4514                 disable mipsdsp
4515                 disable mipsdspr2
4516                 disable msa
4517                 disable mmi
4518             ;;
4519         esac
4520
4521         case $cpu in
4522             24kc)
4523                 disable mipsfpu
4524                 disable mipsdsp
4525                 disable mipsdspr2
4526             ;;
4527             24kf*)
4528                 disable mipsdsp
4529                 disable mipsdspr2
4530             ;;
4531             24kec|34kc|1004kc)
4532                 disable mipsfpu
4533                 disable mipsdspr2
4534             ;;
4535             24kef*|34kf*|1004kf*)
4536                 disable mipsdspr2
4537             ;;
4538             74kc)
4539                 disable mipsfpu
4540             ;;
4541             p5600)
4542                 enable mips32r5
4543                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4544             ;;
4545             i6400)
4546                 enable mips64r6
4547                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4548             ;;
4549             p6600)
4550                 enable mips64r6
4551                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4552             ;;
4553         esac
4554     else
4555         # We do not disable anything. Is up to the user to disable the unwanted features.
4556         warn 'generic cpu selected'
4557     fi
4558
4559 elif enabled ppc; then
4560
4561     disable ldbrx
4562
4563     case $(tolower $cpu) in
4564         601|ppc601|powerpc601)
4565             cpuflags="-mcpu=601"
4566             disable altivec
4567         ;;
4568         603*|ppc603*|powerpc603*)
4569             cpuflags="-mcpu=603"
4570             disable altivec
4571         ;;
4572         604*|ppc604*|powerpc604*)
4573             cpuflags="-mcpu=604"
4574             disable altivec
4575         ;;
4576         g3|75*|ppc75*|powerpc75*)
4577             cpuflags="-mcpu=750"
4578             disable altivec
4579         ;;
4580         g4|745*|ppc745*|powerpc745*)
4581             cpuflags="-mcpu=7450"
4582             disable vsx
4583         ;;
4584         74*|ppc74*|powerpc74*)
4585             cpuflags="-mcpu=7400"
4586             disable vsx
4587         ;;
4588         g5|970|ppc970|powerpc970)
4589             cpuflags="-mcpu=970"
4590             disable vsx
4591         ;;
4592         power[3-6]*)
4593             cpuflags="-mcpu=$cpu"
4594             disable vsx
4595         ;;
4596         power[7-8]*)
4597             cpuflags="-mcpu=$cpu"
4598         ;;
4599         cell)
4600             cpuflags="-mcpu=cell"
4601             enable ldbrx
4602             disable vsx
4603         ;;
4604         e500mc)
4605             cpuflags="-mcpu=e500mc"
4606             disable altivec
4607         ;;
4608         e500v2)
4609             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4610             disable altivec
4611             disable dcbzl
4612         ;;
4613         e500)
4614             cpuflags="-mcpu=8540 -mhard-float"
4615             disable altivec
4616             disable dcbzl
4617         ;;
4618     esac
4619
4620 elif enabled sparc; then
4621
4622     case $cpu in
4623         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4624             cpuflags="-mcpu=$cpu"
4625         ;;
4626         ultrasparc*|niagara[234])
4627             cpuflags="-mcpu=$cpu"
4628         ;;
4629     esac
4630
4631 elif enabled x86; then
4632
4633     case $cpu in
4634         i[345]86|pentium)
4635             cpuflags="-march=$cpu"
4636             disable i686
4637             disable mmx
4638         ;;
4639         # targets that do NOT support nopl and conditional mov (cmov)
4640         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4641             cpuflags="-march=$cpu"
4642             disable i686
4643         ;;
4644         # targets that do support nopl and conditional mov (cmov)
4645         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4646         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4647         |amdfam10|barcelona|b[dt]ver*|znver*)
4648             cpuflags="-march=$cpu"
4649             enable i686
4650             enable fast_cmov
4651         ;;
4652         # targets that do support conditional mov but on which it's slow
4653         pentium4|pentium4m|prescott|nocona)
4654             cpuflags="-march=$cpu"
4655             enable i686
4656             disable fast_cmov
4657         ;;
4658     esac
4659
4660 fi
4661
4662 if [ "$cpu" != generic ]; then
4663     add_cflags  $cpuflags
4664     add_asflags $cpuflags
4665     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4666 fi
4667
4668 # compiler sanity check
4669 check_exec <<EOF
4670 int main(void){ return 0; }
4671 EOF
4672 if test "$?" != 0; then
4673     echo "$cc is unable to create an executable file."
4674     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4675         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4676         echo "Only do this if you know what cross compiling means."
4677     fi
4678     die "C compiler test failed."
4679 fi
4680
4681 add_cppflags -D_ISOC99_SOURCE
4682 add_cxxflags -D__STDC_CONSTANT_MACROS
4683 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4684
4685 # some compilers silently accept -std=c11, so we also need to check that the
4686 # version macro is defined properly
4687 if test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L"; then
4688     add_cflags -std=c11
4689 else
4690     check_cflags -std=c99
4691 fi
4692
4693 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4694 #include <stdlib.h>
4695 EOF
4696 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4697 #include <stdlib.h>
4698 EOF
4699
4700 add_host_cppflags -D_ISOC99_SOURCE
4701 check_host_cflags -std=c99
4702 check_host_cflags -Wall
4703 check_host_cflags -O3
4704
4705 check_64bit(){
4706     arch32=$1
4707     arch64=$2
4708     expr=$3
4709     check_code cc "" "int test[2*($expr) - 1]" &&
4710         subarch=$arch64 || subarch=$arch32
4711 }
4712
4713 case "$arch" in
4714     aarch64|alpha|ia64)
4715         spic=$shared
4716     ;;
4717     mips)
4718         check_64bit mips mips64 '_MIPS_SIM > 1'
4719         spic=$shared
4720     ;;
4721     parisc)
4722         check_64bit parisc parisc64 'sizeof(void *) > 4'
4723         spic=$shared
4724     ;;
4725     ppc)
4726         check_64bit ppc ppc64 'sizeof(void *) > 4'
4727         spic=$shared
4728     ;;
4729     s390)
4730         check_64bit s390 s390x 'sizeof(void *) > 4'
4731         spic=$shared
4732     ;;
4733     sparc)
4734         check_64bit sparc sparc64 'sizeof(void *) > 4'
4735         spic=$shared
4736     ;;
4737     x86)
4738         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4739         # Treat x32 as x64 for now. Note it also needs spic=$shared
4740         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4741             subarch=x86_64
4742         if test "$subarch" = "x86_64"; then
4743             spic=$shared
4744         fi
4745     ;;
4746     ppc)
4747         check_cc <<EOF && subarch="ppc64"
4748         int test[(int)sizeof(char*) - 7];
4749 EOF
4750     ;;
4751 esac
4752
4753 enable $subarch
4754 enabled spic && enable_weak pic
4755
4756 # OS specific
4757 case $target_os in
4758     aix)
4759         SHFLAGS=-shared
4760         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4761         enabled shared && add_ldflags -Wl,-brtl
4762         ;;
4763     android)
4764         disable symver
4765         enable section_data_rel_ro
4766         SLIB_INSTALL_NAME='$(SLIBNAME)'
4767         SLIB_INSTALL_LINKS=
4768         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4769         ;;
4770     haiku)
4771         prefix_default="/boot/common"
4772         network_extralibs="-lnetwork"
4773         host_libs=
4774         ;;
4775     sunos)
4776         SHFLAGS='-shared -Wl,-h,$$(@F)'
4777         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4778         network_extralibs="-lsocket -lnsl"
4779         add_cppflags -D__EXTENSIONS__
4780         # When using suncc to build, the Solaris linker will mark
4781         # an executable with each instruction set encountered by
4782         # the Solaris assembler.  As our libraries contain their own
4783         # guards for processor-specific code, instead suppress
4784         # generation of the HWCAPS ELF section on Solaris x86 only.
4785         enabled_all suncc x86 &&
4786             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4787             add_ldflags -Wl,-M,mapfile
4788         nm_default='nm -P -g'
4789         version_script='-M'
4790         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
4791         ;;
4792     netbsd)
4793         disable symver
4794         oss_indev_extralibs="-lossaudio"
4795         oss_outdev_extralibs="-lossaudio"
4796         enabled gcc || check_ldflags -Wl,-zmuldefs
4797         ;;
4798     openbsd|bitrig)
4799         disable symver
4800         SHFLAGS='-shared'
4801         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4802         SLIB_INSTALL_LINKS=
4803         oss_indev_extralibs="-lossaudio"
4804         oss_outdev_extralibs="-lossaudio"
4805         ;;
4806     dragonfly)
4807         disable symver
4808         ;;
4809     freebsd)
4810         ;;
4811     bsd/os)
4812         add_extralibs -lpoll -lgnugetopt
4813         strip="strip -d"
4814         ;;
4815     darwin)
4816         enabled ppc && add_asflags -force_cpusubtype_ALL
4817         install_name_dir_default='$(SHLIBDIR)'
4818         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4819         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4820         strip="${strip} -x"
4821         add_ldflags -Wl,-dynamic,-search_paths_first
4822         SLIBSUF=".dylib"
4823         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4824         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4825         objformat="macho"
4826         enabled x86_64 && objformat="macho64"
4827         enabled_any pic shared x86_64 ||
4828             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4829         check_header dispatch/dispatch.h &&
4830             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
4831         version_script='-exported_symbols_list'
4832         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
4833         ;;
4834     msys*)
4835         die "Native MSYS builds are discouraged, please use the MINGW environment."
4836         ;;
4837     mingw32*|mingw64*)
4838         if test $target_os = "mingw32ce"; then
4839             disable network
4840         else
4841             target_os=mingw32
4842         fi
4843         decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
4844         decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
4845         LIBTARGET=i386
4846         if enabled x86_64; then
4847             LIBTARGET="i386:x86-64"
4848         elif enabled arm; then
4849             LIBTARGET=arm-wince
4850         fi
4851         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4852         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4853         shlibdir_default="$bindir_default"
4854         SLIBPREF=""
4855         SLIBSUF=".dll"
4856         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4857         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4858         dlltool="${cross_prefix}dlltool"
4859         if check_cmd lib.exe -list; then
4860             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4861             if enabled x86_64; then
4862                 LIBTARGET=x64
4863             fi
4864         elif check_cmd $dlltool --version; then
4865             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4866         fi
4867         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4868         SLIB_INSTALL_LINKS=
4869         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4870         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4871         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--disable-auto-image-base'
4872         objformat="win32"
4873         ranlib=:
4874         enable dos_paths
4875         check_ldflags -Wl,--nxcompat,--dynamicbase
4876         # Lets work around some stupidity in binutils.
4877         # ld will strip relocations from executables even though we need them
4878         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4879         # however ld then forgets what the entry point should be (oops) so we
4880         # have to manually (re)set it.
4881         if enabled x86_32; then
4882             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
4883         elif enabled x86_64; then
4884             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
4885             check_ldflags -Wl,--high-entropy-va # binutils 2.25
4886             # Set image base >4GB for extra entropy with HEASLR
4887             add_ldexeflags -Wl,--image-base,0x140000000
4888             append SHFLAGS -Wl,--image-base,0x180000000
4889         fi
4890         ;;
4891     win32|win64)
4892         disable symver
4893         if enabled shared; then
4894             # Link to the import library instead of the normal static library
4895             # for shared libs.
4896             LD_LIB='%.lib'
4897             # Cannot build both shared and static libs with MSVC or icl.
4898             disable static
4899         fi
4900         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4901         shlibdir_default="$bindir_default"
4902         SLIBPREF=""
4903         SLIBSUF=".dll"
4904         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4905         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4906         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4907         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4908         SLIB_INSTALL_LINKS=
4909         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4910         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4911         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4912         objformat="win32"
4913         ranlib=:
4914         enable dos_paths
4915         ;;
4916     cygwin*)
4917         target_os=cygwin
4918         shlibdir_default="$bindir_default"
4919         SLIBPREF="cyg"
4920         SLIBSUF=".dll"
4921         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4922         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4923         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4924         SLIB_INSTALL_LINKS=
4925         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4926         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4927         objformat="win32"
4928         enable dos_paths
4929         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4930         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4931         ;;
4932     *-dos|freedos|opendos)
4933         network_extralibs="-lsocket"
4934         objformat="coff"
4935         enable dos_paths
4936         add_cppflags -U__STRICT_ANSI__
4937         ;;
4938     linux)
4939         enable dv1394
4940         enable section_data_rel_ro
4941         ;;
4942     irix*)
4943         target_os=irix
4944         ranlib="echo ignoring ranlib"
4945         ;;
4946     os/2*)
4947         strip="lxlite -CS"
4948         objformat="aout"
4949         add_cppflags -D_GNU_SOURCE
4950         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4951         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4952         LIBSUF="_s.a"
4953         SLIBPREF=""
4954         SLIBSUF=".dll"
4955         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4956         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4957         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
4958             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
4959             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
4960             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
4961             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
4962         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
4963             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
4964         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4965         SLIB_INSTALL_LINKS=
4966         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
4967         enable dos_paths
4968         enable_weak os2threads
4969         ;;
4970     gnu/kfreebsd)
4971         add_cppflags -D_BSD_SOURCE
4972         ;;
4973     gnu)
4974         ;;
4975     qnx)
4976         add_cppflags -D_QNX_SOURCE
4977         network_extralibs="-lsocket"
4978         ;;
4979     symbian)
4980         SLIBSUF=".dll"
4981         enable dos_paths
4982         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4983         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4984         add_ldflags -Wl,--target1-abs,--no-undefined \
4985                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4986                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4987         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4988                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4989                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4990         ;;
4991     osf1)
4992         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4993         ;;
4994     minix)
4995         ;;
4996     plan9)
4997         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4998                      -D_REENTRANT_SOURCE        \
4999                      -D_RESEARCH_SOURCE         \
5000                      -DFD_SETSIZE=96            \
5001                      -DHAVE_SOCK_OPTS
5002         add_compat strtod.o strtod=avpriv_strtod
5003         network_extralibs='-lbsd'
5004         exeobjs=compat/plan9/main.o
5005         disable ffserver
5006         cp_f='cp'
5007         ;;
5008     none)
5009         ;;
5010     *)
5011         die "Unknown OS '$target_os'."
5012         ;;
5013 esac
5014
5015 # test if creating links works
5016 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5017 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5018 mkdir "$link_dest"
5019 $ln_s "$link_dest" "$link_name"
5020 touch "$link_dest/test_file"
5021 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5022     # create link to source path
5023     [ -e src ] && rm src
5024     $ln_s "$source_path" src
5025     source_link=src
5026 else
5027     # creating directory links doesn't work
5028     # fall back to using the full source path
5029     source_link="$source_path"
5030 fi
5031 # cleanup
5032 rm -r "$link_dest"
5033 rm -r "$link_name"
5034
5035 # determine libc flavour
5036
5037 probe_libc(){
5038     pfx=$1
5039     pfx_no_=${pfx%_}
5040     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5041     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5042         eval ${pfx}libc_type=uclibc
5043         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5044     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5045         eval ${pfx}libc_type=glibc
5046         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5047     # MinGW headers can be installed on Cygwin, so check for newlib first.
5048     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5049         eval ${pfx}libc_type=newlib
5050         add_${pfx}cppflags -U__STRICT_ANSI__
5051     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5052     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5053         eval ${pfx}libc_type=mingw64
5054         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5055             add_compat msvcrt/snprintf.o
5056             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5057         fi
5058         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5059         eval test \$${pfx_no_}cc_type = "gcc" &&
5060             add_${pfx}cppflags -D__printf__=__gnu_printf__
5061     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5062          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5063         eval ${pfx}libc_type=mingw32
5064         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5065             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5066             die "ERROR: MinGW32 runtime version must be >= 3.15."
5067         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5068         check_${pfx}cpp_condition _mingw.h "defined(_WIN32_WINNT) && _WIN32_WINNT >= 0x0502" ||
5069             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
5070         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700__" &&
5071             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5072         eval test \$${pfx_no_}cc_type = "gcc" &&
5073             add_${pfx}cppflags -D__printf__=__gnu_printf__
5074     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5075         eval ${pfx}libc_type=msvcrt
5076         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5077             if [ "$pfx" = host_ ]; then
5078                 add_host_cppflags -Dsnprintf=_snprintf
5079             else
5080                 add_compat strtod.o strtod=avpriv_strtod
5081                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5082                                              _snprintf=avpriv_snprintf  \
5083                                              vsnprintf=avpriv_vsnprintf
5084             fi
5085         fi
5086         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5087         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5088         # 0x601 by default unless something else is set by the user.
5089         # This can easily lead to us detecting functions only present
5090         # in such new versions and producing binaries requiring windows 7.0.
5091         # Therefore explicitly set the default to XP unless the user has
5092         # set something else on the command line.
5093         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5094         # family. For these cases, configure is free to use any functions
5095         # found in the SDK headers by default. (Alternatively, we could force
5096         # _WIN32_WINNT to 0x0602 in that case.)
5097         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5098             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
5099 #ifdef WINAPI_FAMILY
5100 #include <winapifamily.h>
5101 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5102 #error not desktop
5103 #endif
5104 #endif
5105 EOF
5106         if [ "$pfx" = "" ]; then
5107             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5108             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5109         fi
5110     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5111         eval ${pfx}libc_type=klibc
5112     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5113         eval ${pfx}libc_type=bionic
5114     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5115         eval ${pfx}libc_type=solaris
5116         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5117     fi
5118     check_${pfx}cc <<EOF
5119 #include <time.h>
5120 void *v = localtime_r;
5121 EOF
5122 test "$?" != 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
5123 #include <time.h>
5124 void *v = localtime_r;
5125 EOF
5126
5127 }
5128
5129 probe_libc
5130 test -n "$libc_type" && enable libc_$libc_type
5131 probe_libc host_
5132 test -n "$host_libc_type" && enable host_libc_$host_libc_type
5133
5134 case $libc_type in
5135     bionic)
5136         add_compat strtod.o strtod=avpriv_strtod
5137         ;;
5138 esac
5139
5140 # hacks for compiler/libc/os combinations
5141
5142 if enabled_all tms470 libc_glibc; then
5143     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
5144     add_cppflags -D__USER_LABEL_PREFIX__=
5145     add_cppflags -D__builtin_memset=memset
5146     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
5147     add_cflags   -pds=48    # incompatible redefinition of macro
5148 fi
5149
5150 if enabled_all ccc libc_glibc; then
5151     add_ldflags -Wl,-z,now  # calls to libots crash without this
5152 fi
5153
5154 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5155     add_cppflags '-I\$(SRC_PATH)/compat/float'
5156
5157 esc(){
5158     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
5159 }
5160
5161 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
5162
5163 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5164
5165 set_default libdir
5166 : ${shlibdir_default:="$libdir"}
5167 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5168
5169 set_default $PATHS_LIST
5170 set_default nm
5171
5172 # we need to build at least one lib type
5173 if ! enabled_any static shared; then
5174     cat <<EOF
5175 At least one library type must be built.
5176 Specify --enable-static to build the static libraries or --enable-shared to
5177 build the shared libraries as well. To only build the shared libraries specify
5178 --disable-static in addition to --enable-shared.
5179 EOF
5180     exit 1
5181 fi
5182
5183 disabled optimizations || check_cflags -fomit-frame-pointer
5184
5185 enable_weak_pic() {
5186     disabled pic && return
5187     enable pic
5188     add_cppflags -DPIC
5189     case "$target_os" in
5190     mingw*|cygwin*)
5191         ;;
5192     *)
5193         add_cflags -fPIC
5194         ;;
5195     esac
5196     add_asflags  -fPIC
5197 }
5198
5199 enabled pic && enable_weak_pic
5200
5201 check_cc <<EOF || die "Symbol mangling check failed."
5202 int ff_extern;
5203 EOF
5204 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5205 extern_prefix=${sym%%ff_extern*}
5206
5207 check_cc <<EOF && enable_weak inline_asm
5208 void foo(void) { __asm__ volatile ("" ::); }
5209 EOF
5210
5211 _restrict=
5212 for restrict_keyword in restrict __restrict__ __restrict; do
5213     check_cc <<EOF && _restrict=$restrict_keyword && break
5214 void foo(char * $restrict_keyword p);
5215 EOF
5216 done
5217
5218 check_cc <<EOF && enable pragma_deprecated
5219 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
5220 EOF
5221
5222 check_cc <<EOF && enable attribute_packed
5223 struct { int x; } __attribute__((packed)) x;
5224 EOF
5225
5226 check_cc <<EOF && enable attribute_may_alias
5227 union { int x; } __attribute__((may_alias)) x;
5228 EOF
5229
5230 check_cc <<EOF || die "endian test failed"
5231 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5232 EOF
5233 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5234
5235 if ! enabled ppc64 || enabled bigendian; then
5236     disable vsx
5237 fi
5238
5239 check_gas() {
5240     log "check_gas using '$as' as AS"
5241     # :vararg is used on aarch64, arm and ppc altivec
5242     check_as <<EOF || return 1
5243 .macro m n, y:vararg=0
5244 \n: .int \y
5245 .endm
5246 m x
5247 EOF
5248     # .altmacro is only used in arm asm
5249     ! enabled arm || check_as <<EOF || return 1
5250 .altmacro
5251 EOF
5252     enable gnu_as
5253     return 0
5254 }
5255
5256 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5257     nogas=:
5258     enabled_any arm aarch64 && nogas=die
5259     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5260     as_noop=-v
5261
5262     case $as_type in
5263         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5264         gcc)  gaspp_as_type=gas ;;
5265         *)    gaspp_as_type=$as_type ;;
5266     esac
5267
5268     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5269
5270     test "${as#*gas-preprocessor.pl}" != "$as" ||
5271     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5272         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5273
5274     if ! check_gas ; then
5275         as=${gas:=$as}
5276         check_gas || \
5277             $nogas "GNU assembler not found, install/update gas-preprocessor"
5278     fi
5279
5280     check_as <<EOF && enable as_func
5281 .func test
5282 .endfunc
5283 EOF
5284 fi
5285
5286 check_inline_asm inline_asm_labels '"1:\n"'
5287
5288 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5289
5290 if enabled aarch64; then
5291     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5292     # internal assembler in clang 3.3 does not support this instruction
5293     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5294     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5295
5296     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5297
5298 elif enabled alpha; then
5299
5300     check_cflags -mieee
5301
5302 elif enabled arm; then
5303
5304     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
5305
5306     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
5307 float func(float a, float b){ return a+b; }
5308 EOF
5309
5310     enabled thumb && check_cflags -mthumb || check_cflags -marm
5311
5312     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
5313         enable vfp_args
5314     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5315         enable vfp_args
5316     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5317         case "${cross_prefix:-$cc}" in
5318             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
5319             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
5320 __asm__ (".eabi_attribute 28, 1");
5321 int main(void) { return 0; }
5322 EOF
5323         esac
5324         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5325     fi
5326
5327     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5328     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5329     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5330     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5331     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5332     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5333     enabled setend  && check_insn setend  'setend be'
5334
5335     [ $target_os = linux ] || [ $target_os = android ] ||
5336         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5337             $ARCH_EXT_LIST_ARM
5338
5339     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5340
5341     check_as <<EOF && enable as_dn_directive
5342 ra .dn d0.i16
5343 .unreq ra
5344 EOF
5345     check_as <<EOF && enable as_fpu_directive
5346 .fpu neon
5347 EOF
5348
5349     # llvm's integrated assembler supports .object_arch from llvm 3.5
5350     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
5351 .object_arch armv4
5352 EOF
5353
5354     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5355
5356 elif enabled mips; then
5357
5358     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5359     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5360     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5361
5362     # Enable minimum ISA based on selected options
5363     if enabled mips64; then
5364         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5365         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5366         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5367     else
5368         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5369         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5370         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5371         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5372     fi
5373
5374     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5375     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5376     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
5377     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5378     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5379
5380 elif enabled parisc; then
5381
5382     if enabled gcc; then
5383         case $($cc -dumpversion) in
5384             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5385         esac
5386     fi
5387
5388 elif enabled ppc; then
5389
5390     enable local_aligned_8 local_aligned_16 local_aligned_32
5391
5392     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5393     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5394     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5395     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5396
5397     # AltiVec flags: The FSF version of GCC differs from the Apple version
5398     if enabled altivec; then
5399         check_cflags -maltivec -mabi=altivec &&
5400         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
5401         check_cflags -faltivec
5402
5403         # check if our compiler supports Motorola AltiVec C API
5404         check_cc <<EOF || disable altivec
5405 $inc_altivec_h
5406 int main(void) {
5407     vector signed int v1 = (vector signed int) { 0 };
5408     vector signed int v2 = (vector signed int) { 1 };
5409     v1 = vec_add(v1, v2);
5410     return 0;
5411 }
5412 EOF
5413
5414         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5415     fi
5416
5417     if enabled vsx; then
5418         check_cflags -mvsx &&
5419         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
5420     fi
5421
5422     if enabled power8; then
5423         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
5424     fi
5425
5426 elif enabled x86; then
5427
5428     check_builtin rdtsc    intrin.h   "__rdtsc()"
5429     check_builtin mm_empty mmintrin.h "_mm_empty()"
5430
5431     enable local_aligned_8 local_aligned_16 local_aligned_32
5432
5433     # check whether EBP is available on x86
5434     # As 'i' is stored on the stack, this program will crash
5435     # if the base pointer is used to access it because the
5436     # base pointer is cleared in the inline assembly code.
5437     check_exec_crash <<EOF && enable ebp_available
5438 volatile int i=0;
5439 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5440 return i;
5441 EOF
5442
5443     # check whether EBX is available on x86
5444     check_inline_asm ebx_available '""::"b"(0)' &&
5445         check_inline_asm ebx_available '"":::"%ebx"'
5446
5447     # check whether xmm clobbers are supported
5448     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5449
5450     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5451         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5452
5453     # check whether binutils is new enough to compile SSSE3/MMXEXT
5454     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5455     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5456
5457     if ! disabled_any asm mmx yasm; then
5458         if check_cmd $yasmexe --version; then
5459             enabled x86_64 && yasm_extra="-m amd64"
5460             yasm_debug="-g dwarf2"
5461         elif check_cmd nasm -v; then
5462             yasmexe=nasm
5463             yasm_debug="-g -F dwarf"
5464             if enabled x86_64; then
5465                 case "$objformat" in
5466                     elf)   objformat=elf64 ;;
5467                     win32) objformat=win64 ;;
5468                 esac
5469             fi
5470         fi
5471
5472         YASMFLAGS="-f $objformat $yasm_extra"
5473         enabled pic               && append YASMFLAGS "-DPIC"
5474         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
5475         case "$objformat" in
5476             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
5477         esac
5478
5479         check_yasm "movbe ecx, [5]" && enable yasm ||
5480             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
5481         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
5482         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
5483         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
5484         check_yasm "CPU amdnop" || disable cpunop
5485     fi
5486
5487     case "$cpu" in
5488         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5489             disable fast_clz
5490         ;;
5491     esac
5492
5493 fi
5494
5495 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
5496
5497 check_ldflags -Wl,--as-needed
5498 check_ldflags -Wl,-z,noexecstack
5499
5500 if check_func dlopen && check_func dlsym; then
5501     ldl=
5502 elif check_func dlopen -ldl && check_func dlsym -ldl; then
5503     ldl=-ldl
5504 fi
5505
5506 avisynth_demuxer_extralibs='$ldl'
5507 cuda_extralibs='$ldl'
5508 decklink_outdev_extralibs="$decklink_outdev_extralibs $ldl"
5509 decklink_indev_extralibs="$decklink_indev_extralibs $ldl"
5510 frei0r_filter_extralibs='$ldl'
5511 frei0r_src_filter_extralibs='$ldl'
5512 ladspa_filter_extralibs='$ldl'
5513 nvenc_extralibs='$ldl'
5514 coreimage_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5515 coreimagesrc_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5516
5517 if ! disabled network; then
5518     check_func getaddrinfo $network_extralibs
5519     check_func inet_aton $network_extralibs
5520
5521     check_type netdb.h "struct addrinfo"
5522     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5523     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5524     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5525     check_type poll.h "struct pollfd"
5526     check_type netinet/sctp.h "struct sctp_event_subscribe"
5527     check_struct "sys/socket.h" "struct msghdr" msg_flags
5528     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5529     check_type netinet/in.h "struct sockaddr_in6"
5530     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5531     check_type "sys/types.h sys/socket.h" socklen_t
5532
5533     # Prefer arpa/inet.h over winsock2
5534     if check_header arpa/inet.h ; then
5535         check_func closesocket
5536     elif check_header winsock2.h ; then
5537         check_func_headers winsock2.h closesocket -lws2 &&
5538             network_extralibs="-lws2" ||
5539         { check_func_headers winsock2.h closesocket -lws2_32 &&
5540             network_extralibs="-lws2_32"; } || disable winsock2_h network
5541         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5542
5543         check_type ws2tcpip.h socklen_t
5544         check_type ws2tcpip.h "struct addrinfo"
5545         check_type ws2tcpip.h "struct group_source_req"
5546         check_type ws2tcpip.h "struct ip_mreq_source"
5547         check_type ws2tcpip.h "struct ipv6_mreq"
5548         check_type winsock2.h "struct pollfd"
5549         check_struct winsock2.h "struct sockaddr" sa_len
5550         check_type ws2tcpip.h "struct sockaddr_in6"
5551         check_type ws2tcpip.h "struct sockaddr_storage"
5552     else
5553         disable network
5554     fi
5555 fi
5556
5557 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5558 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5559 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5560 check_builtin sarestart signal.h "SA_RESTART"
5561 check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" -lpthread
5562 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5563 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5564 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5565 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5566
5567 case "$custom_allocator" in
5568     jemalloc)
5569         # jemalloc by default does not use a prefix
5570         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5571     ;;
5572     tcmalloc)
5573         require_pkg_config libtcmalloc gperftools/tcmalloc.h tc_malloc
5574         malloc_prefix=tc_
5575     ;;
5576 esac
5577
5578 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5579 check_func  ${malloc_prefix}memalign            && enable memalign
5580 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5581
5582 check_func  access
5583 check_func_headers stdlib.h arc4random
5584 check_func_headers time.h clock_gettime ||
5585     { check_lib time.h clock_gettime -lrt && LIBRT="-lrt"; }
5586 check_func  fcntl
5587 check_func  fork
5588 check_func  gethrtime
5589 check_func  getopt
5590 check_func  getrusage
5591 check_func  gettimeofday
5592 check_func  isatty
5593 check_func  mach_absolute_time
5594 check_func  mkstemp
5595 check_func  mmap
5596 check_func  mprotect
5597 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5598 check_func_headers time.h nanosleep ||
5599     { check_lib time.h nanosleep -lrt && LIBRT="-lrt"; }
5600 check_func  sched_getaffinity
5601 check_func  setrlimit
5602 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5603 check_func  strerror_r
5604 check_func  sysconf
5605 check_func  sysctl
5606 check_func  usleep
5607
5608 check_func_headers conio.h kbhit
5609 check_func_headers io.h setmode
5610 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5611 check_func_headers stdlib.h getenv
5612 check_func_headers sys/stat.h lstat
5613
5614 check_func_headers windows.h CoTaskMemFree -lole32
5615 check_func_headers windows.h GetProcessAffinityMask
5616 check_func_headers windows.h GetProcessTimes
5617 check_func_headers windows.h GetSystemTimeAsFileTime
5618 check_func_headers windows.h LoadLibrary
5619 check_func_headers windows.h MapViewOfFile
5620 check_func_headers windows.h PeekNamedPipe
5621 check_func_headers windows.h SetConsoleTextAttribute
5622 check_func_headers windows.h SetConsoleCtrlHandler
5623 check_func_headers windows.h Sleep
5624 check_func_headers windows.h VirtualAlloc
5625 check_struct windows.h "CONDITION_VARIABLE" Ptr
5626 check_func_headers glob.h glob
5627 enabled xlib &&
5628     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5629
5630 check_header AudioToolbox/AudioToolbox.h
5631 check_header direct.h
5632 check_header dirent.h
5633 check_header dlfcn.h
5634 check_header d3d11.h
5635 check_header dxva.h
5636 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5637 check_header io.h
5638 check_header libcrystalhd/libcrystalhd_if.h
5639 check_header mach/mach_time.h
5640 check_header malloc.h
5641 check_header net/udplite.h
5642 check_header poll.h
5643 check_header sys/mman.h
5644 check_header sys/param.h
5645 check_header sys/resource.h
5646 check_header sys/select.h
5647 check_header sys/time.h
5648 check_header sys/un.h
5649 check_header termios.h
5650 check_header unistd.h
5651 check_header valgrind/valgrind.h
5652 check_header vdpau/vdpau.h
5653 check_header vdpau/vdpau_x11.h
5654 check_header VideoDecodeAcceleration/VDADecoder.h
5655 check_header VideoToolbox/VideoToolbox.h
5656 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5657 enabled videotoolbox && check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferColorPrimaries_ITU_R_2020 -framework CoreVideo
5658 check_header windows.h
5659 check_header X11/extensions/XvMClib.h
5660 check_header asm/types.h
5661
5662 # it seems there are versions of clang in some distros that try to use the
5663 # gcc headers, which explodes for stdatomic
5664 # so we also check that atomics actually work here
5665 check_builtin stdatomic_h stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0)"
5666
5667 check_lib "windows.h shellapi.h" CommandLineToArgvW   -lshell32
5668 check_lib "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
5669 check_lib "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
5670
5671 check_lib "CoreServices/CoreServices.h" UTGetOSTypeFromString "-framework CoreServices"
5672
5673 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5674
5675 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5676 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5677 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5678 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5679 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5680
5681 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
5682 check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
5683 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
5684 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
5685 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5686 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5687 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
5688 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
5689
5690 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5691
5692 check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt
5693
5694 if ! disabled w32threads && ! enabled pthreads; then
5695     check_func_headers "windows.h process.h" _beginthreadex &&
5696         enable w32threads || disable w32threads
5697     if ! enabled w32threads && enabled winrt; then
5698         check_func_headers "windows.h" CreateThread &&
5699             enable w32threads || disable w32threads
5700     fi
5701 fi
5702
5703 # check for some common methods of building with pthread support
5704 # do this before the optional library checks as some of them require pthreads
5705 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5706     enable pthreads
5707     if check_func pthread_join -pthread && check_func pthread_create -pthread; then
5708         add_cflags -pthread
5709         add_extralibs -pthread
5710     elif check_func pthread_join -pthreads && check_func pthread_create -pthreads; then
5711         add_cflags -pthreads
5712         add_extralibs -pthreads
5713     elif check_func pthread_join -ldl -pthread && check_func pthread_create -ldl -pthread; then
5714         add_cflags -ldl -pthread
5715         add_extralibs -ldl -pthread
5716     elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
5717         add_extralibs -lpthreadGC2
5718     elif check_lib pthread.h pthread_join -lpthread && check_lib pthread.h pthread_create -lpthread; then
5719         :
5720     elif ! check_func pthread_join && ! check_func pthread_create; then
5721         disable pthreads
5722     fi
5723     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5724 fi
5725
5726
5727 if enabled pthreads; then
5728   check_func pthread_cancel
5729 fi
5730
5731 enabled pthreads &&
5732     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)"
5733
5734 disabled  zlib || check_lib  zlib.h      zlibVersion    -lz    || disable  zlib
5735 disabled bzlib || check_lib bzlib.h BZ2_bzlibVersion    -lbz2  || disable bzlib
5736 disabled  lzma || check_lib  lzma.h lzma_version_number -llzma || disable lzma
5737
5738 check_lib math.h sin -lm && LIBM="-lm"
5739 disabled crystalhd || check_lib "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd || disable crystalhd
5740
5741 atan2f_args=2
5742 copysign_args=2
5743 hypot_args=2
5744 ldexpf_args=2
5745 powf_args=2
5746
5747 for func in $MATH_FUNCS; do
5748     eval check_mathfunc $func \${${func}_args:-1}
5749 done
5750
5751 for func in $COMPLEX_FUNCS; do
5752     eval check_complexfunc $func \${${func}_args:-1}
5753 done
5754
5755 # these are off by default, so fail if requested and not available
5756 enabled avfoundation_indev && { check_header_objcc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
5757 enabled avfoundation_indev && { check_lib CoreGraphics/CoreGraphics.h CGGetActiveDisplayList -framework CoreGraphics ||
5758                                 check_lib ApplicationServices/ApplicationServices.h CGGetActiveDisplayList -framework ApplicationServices; }
5759 enabled cuda              && check_header cuda.h # this is not a dependency
5760 enabled cuvid             && { enabled cuda ||
5761                                die "ERROR: CUVID requires CUDA"; }
5762 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5763 enabled coreimage_filter  && { check_header_objcc QuartzCore/CoreImage.h || disable coreimage_filter; }
5764 enabled coreimagesrc_filter && { check_header_objcc QuartzCore/CoreImage.h || disable coreimagesrc_filter; }
5765 enabled decklink          && { { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; } &&
5766                                { check_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a060100" || die "ERROR: Decklink API version must be >= 10.6.1."; } }
5767 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
5768 enabled gmp               && require gmp gmp.h mpz_export -lgmp
5769 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
5770 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads &&
5771                                check_lib "dlfcn.h" dlopen -ldl || die "ERROR: jni not found"; }
5772 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
5773 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5774 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
5775 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
5776 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
5777 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5778                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
5779                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5780 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
5781 enabled libfdk_aac        && { use_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5782                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5783                                  warn "using libfdk without pkg-config"; } }
5784 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"
5785 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_libs
5786 enabled fontconfig        && enable libfontconfig
5787 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
5788 enabled libfreetype       && require_libfreetype
5789 enabled libfribidi        && require_pkg_config fribidi fribidi.h fribidi_version_info
5790 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
5791 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5792                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
5793                                done || die "ERROR: libgsm not found"; }
5794 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
5795 enabled libkvazaar        && require_pkg_config "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
5796 enabled libmfx            && require_pkg_config libmfx "mfx/mfxvideo.h" MFXInit
5797 enabled libmodplug        && require_pkg_config libmodplug libmodplug/modplug.h ModPlug_Load
5798 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5799 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
5800 enabled libnpp            && require libnpp npp.h nppGetLibVersion -lnppi -lnppc
5801 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5802 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5803 enabled libopencv         && { check_header opencv2/core/core_c.h &&
5804                                { use_pkg_config opencv opencv2/core/core_c.h cvCreateImageHeader ||
5805                                  require opencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
5806                                require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader; }
5807 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
5808 enabled libopenjpeg       && { { check_lib openjpeg-2.1/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5809                                check_lib openjpeg-2.1/openjpeg.h opj_version -lopenjp2 ||
5810                                { check_lib openjpeg-2.0/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5811                                { check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5812                                { check_lib openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5813                                die "ERROR: libopenjpeg not found"; }
5814 enabled libopenmpt        && require_pkg_config "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create
5815 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
5816 enabled libpulse          && require_pkg_config libpulse pulse/pulseaudio.h pa_context_new
5817 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
5818 enabled librubberband     && require_pkg_config "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new
5819 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
5820 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
5821 enabled libsmbclient      && { use_pkg_config smbclient libsmbclient.h smbc_init ||
5822                                require smbclient libsmbclient.h smbc_init -lsmbclient; }
5823 enabled libsnappy         && require snappy snappy-c.h snappy_compress -lsnappy
5824 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr && LIBSOXR="-lsoxr"
5825 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
5826 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
5827 enabled libtesseract      && require_pkg_config tesseract tesseract/capi.h TessBaseAPICreate
5828 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
5829 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
5830                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
5831                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
5832 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
5833 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
5834 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
5835 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
5836
5837 enabled libvpx            && {
5838     enabled libvpx_vp8_decoder && {
5839         use_pkg_config "vpx >= 0.9.1" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
5840             check_lib "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
5841                 die "ERROR: libvpx decoder version must be >=0.9.1";
5842     }
5843     enabled libvpx_vp8_encoder && {
5844         use_pkg_config "vpx >= 0.9.7" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
5845             check_lib "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
5846                 die "ERROR: libvpx encoder version must be >=0.9.7";
5847     }
5848     enabled libvpx_vp9_decoder && {
5849         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
5850             check_lib "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx ||
5851                 disable libvpx_vp9_decoder;
5852     }
5853     enabled libvpx_vp9_encoder && {
5854         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
5855             check_lib "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx ||
5856                 disable libvpx_vp9_encoder;
5857     }
5858     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
5859         die "libvpx enabled but no supported decoders found"
5860     fi
5861 }
5862
5863 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
5864 enabled libwebp           && {
5865     enabled libwebp_encoder      && require_pkg_config "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
5866     enabled libwebp_anim_encoder && { use_pkg_config "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit || disable libwebp_anim_encoder; } }
5867 enabled libx264           && { use_pkg_config x264 "stdint.h x264.h" x264_encoder_encode ||
5868                                { require libx264 "stdint.h x264.h" x264_encoder_encode -lx264 &&
5869                                  warn "using libx264 without pkg-config"; } } &&
5870                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
5871                                die "ERROR: libx264 must be installed and version must be >= 0.118."; } &&
5872                              { check_cpp_condition x264.h "X264_MPEG2" &&
5873                                enable libx262; }
5874 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
5875                              { check_cpp_condition x265.h "X265_BUILD >= 68" ||
5876                                die "ERROR: libx265 version must be >= 68."; }
5877 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode -lxavs
5878 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
5879 enabled libzimg           && require_pkg_config "zimg >= 2.3.0" zimg.h zimg_get_api_version
5880 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
5881 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi &&
5882                              { check_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
5883                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
5884 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
5885 enabled mmal              && { check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
5886                                 { ! enabled cross_compile && {
5887                                     add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline ;
5888                                     add_extralibs -L/opt/vc/lib/ -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ;
5889                                     check_lib interface/mmal/mmal.h mmal_port_connect ; }
5890                                 check_lib interface/mmal/mmal.h mmal_port_connect ; } ||
5891                                die "ERROR: mmal not found"; }
5892 enabled mmal && check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"
5893
5894 enabled netcdf            && require_pkg_config netcdf netcdf.h nc_inq_libvers
5895 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
5896                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
5897                                die "ERROR: openal not found"; } &&
5898                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
5899                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
5900 enabled opencl            && { check_lib OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
5901                                check_lib CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
5902                                die "ERROR: opencl not found"; } &&
5903                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
5904                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
5905                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
5906 enabled opengl            && { check_lib GL/glx.h glXGetProcAddress "-lGL" ||
5907                                check_lib windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
5908                                check_lib OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
5909                                check_lib ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
5910                                die "ERROR: opengl not found."
5911                              }
5912 enabled omx_rpi && enable omx
5913 enabled omx               && { check_header OMX_Core.h ||
5914                                 { ! enabled cross_compile && enabled omx_rpi && {
5915                                     add_cflags -isystem/opt/vc/include/IL ; }
5916                                 check_header OMX_Core.h ; } ||
5917                                die "ERROR: OpenMAX IL headers not found"; }
5918 enabled openssl           && { use_pkg_config openssl openssl/ssl.h OPENSSL_init_ssl ||
5919                                use_pkg_config openssl openssl/ssl.h SSL_library_init ||
5920                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
5921                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
5922                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
5923                                die "ERROR: openssl not found"; }
5924 enabled qtkit_indev      && { check_header_objcc QTKit/QTKit.h || disable qtkit_indev; }
5925
5926 # libdc1394 check
5927 if enabled libdc1394; then
5928     { require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new &&
5929         enable libdc1394_2; } ||
5930     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
5931         enable libdc1394_1; } ||
5932     die "ERROR: No version of libdc1394 found "
5933 fi
5934
5935 if enabled gcrypt; then
5936     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
5937     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
5938         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
5939         gcrypt_libs=$("${GCRYPT_CONFIG}" --libs)
5940         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_libs ||
5941             die "ERROR: gcrypt not found"
5942         add_cflags $gcrypt_cflags && add_extralibs $gcrypt_libs
5943     else
5944         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
5945     fi
5946 fi
5947
5948 disabled sdl && disable sdl2
5949 if ! disabled sdl2; then
5950     SDL2_CONFIG="${cross_prefix}sdl2-config"
5951     if check_pkg_config sdl2 SDL_events.h SDL_PollEvent; then
5952         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
5953         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
5954         check_func SDL_Init $sdl2_libs $sdl2_cflags && enable sdl2
5955     else
5956       if "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
5957         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
5958         sdl2_libs=$("${SDL2_CONFIG}" --libs)
5959         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
5960         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
5961         check_func SDL_Init $sdl2_libs $sdl2_cflags && enable sdl2
5962       fi
5963     fi
5964     if test $target_os = "mingw32"; then
5965         sdl2_libs="$sdl2_libs -mconsole"
5966     fi
5967 fi
5968 enabled sdl2 && enable sdl && add_cflags $sdl2_cflags && add_extralibs $sdl2_libs
5969
5970 disabled securetransport || { check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5971     check_lib "Security/SecureTransport.h Security/Security.h" "SSLCreateContext SecItemImport" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5972     enable securetransport; }
5973
5974 disabled schannel || { check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
5975                        check_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" && enable schannel && add_extralibs -lsecur32; }
5976
5977 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
5978 enabled makeinfo \
5979     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
5980     && enable makeinfo_html || disable makeinfo_html
5981 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
5982 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
5983 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
5984 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
5985
5986 check_header linux/fb.h
5987 check_header linux/videodev.h
5988 check_header linux/videodev2.h
5989 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5990
5991 check_header sys/videoio.h
5992 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5993
5994 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
5995 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
5996 # w32api 3.12 had it defined wrong
5997 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
5998
5999 check_type "dshow.h" IBaseFilter
6000
6001 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6002 { check_header dev/bktr/ioctl_meteor.h &&
6003   check_header dev/bktr/ioctl_bt848.h; } ||
6004 { check_header machine/ioctl_meteor.h &&
6005   check_header machine/ioctl_bt848.h; } ||
6006 { check_header dev/video/meteor/ioctl_meteor.h &&
6007   check_header dev/video/bktr/ioctl_bt848.h; } ||
6008 check_header dev/ic/bt8xx.h
6009
6010 check_header sndio.h
6011 if check_struct sys/soundcard.h audio_buf_info bytes; then
6012     enable_safe sys/soundcard.h
6013 else
6014     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
6015     #include <sys/soundcard.h>
6016     audio_buf_info abc;
6017 EOF
6018 fi
6019 check_header soundcard.h
6020
6021 enabled_any alsa_indev alsa_outdev &&
6022     check_lib alsa/asoundlib.h snd_pcm_htimestamp -lasound
6023
6024 enabled jack_indev && check_lib jack/jack.h jack_client_open -ljack &&
6025     check_func jack_port_get_latency_range -ljack
6026
6027 enabled_any sndio_indev sndio_outdev && check_lib sndio.h sio_open -lsndio
6028
6029 if enabled libcdio; then
6030     check_lib "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6031     check_lib "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6032     die "ERROR: No usable libcdio/cdparanoia found"
6033 fi
6034
6035 if ! disabled libxcb; then
6036     check_pkg_config "xcb >= 1.4" xcb/xcb.h xcb_connect || {
6037         enabled libxcb && die "ERROR: libxcb >= 1.4 not found";
6038     } && enable libxcb
6039
6040 if enabled libxcb; then
6041     disabled libxcb_shm || {
6042         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
6043             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
6044         } && check_header sys/shm.h && enable libxcb_shm; }
6045
6046     disabled libxcb_xfixes || {
6047         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
6048             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
6049         } && enable libxcb_xfixes; }
6050
6051     disabled libxcb_shape || {
6052         check_pkg_config xcb-shape xcb/shape.h xcb_shape_get_rectangles || {
6053             enabled libxcb_shape && die "ERROR: libxcb_shape not found";
6054         } && enable libxcb_shape; }
6055
6056     add_cflags $xcb_cflags $xcb_shm_cflags $xcb_xfixes_cflags $xcb_shape_cflags
6057     add_extralibs $xcb_libs $xcb_shm_libs $xcb_xfixes_libs $xcb_shape_libs
6058 fi
6059 fi
6060
6061 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6062
6063 enabled dxva2api_h &&
6064     check_cc <<EOF && enable dxva2api_cobj
6065 #define _WIN32_WINNT 0x0600
6066 #define COBJMACROS
6067 #include <windows.h>
6068 #include <d3d9.h>
6069 #include <dxva2api.h>
6070 int main(void) { IDirectXVideoDecoder *o = NULL; IDirectXVideoDecoder_Release(o); return 0; }
6071 EOF
6072
6073 enabled vaapi &&
6074     check_lib va/va.h vaInitialize -lva ||
6075     disable vaapi
6076
6077 enabled vaapi &&
6078     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
6079     disable vaapi
6080
6081 enabled vaapi &&
6082     check_lib "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm &&
6083     enable vaapi_drm
6084
6085 enabled vdpau &&
6086     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
6087     disable vdpau
6088
6089 enabled_any vaapi vdpau && check_lib X11/Xlib.h XOpenDisplay -lX11 && enable xlib
6090
6091 enabled vaapi && enabled xlib &&
6092     check_lib "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 &&
6093     enable vaapi_x11
6094
6095 enabled vdpau && enabled xlib &&
6096     check_lib "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
6097     enable vdpau_x11
6098
6099 if enabled x86; then
6100     case $target_os in
6101         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6102             ;;
6103         *)
6104             disable cuda cuvid nvenc
6105             ;;
6106     esac
6107 else
6108     disable cuda cuvid nvenc
6109 fi
6110
6111 enabled nvenc &&
6112     check_cc -I$source_path <<EOF || disable nvenc
6113 #include "compat/nvenc/nvEncodeAPI.h"
6114 NV_ENCODE_API_FUNCTION_LIST flist;
6115 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6116 int main(void) { return 0; }
6117 EOF
6118
6119 # Funny iconv installations are not unusual, so check it after all flags have been set
6120 disabled iconv || check_func_headers iconv.h iconv || check_lib iconv.h iconv -liconv || disable iconv
6121
6122 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6123
6124 # add some useful compiler flags if supported
6125 check_cflags -Wdeclaration-after-statement
6126 check_cflags -Wall
6127 check_cflags -Wdisabled-optimization
6128 check_cflags -Wpointer-arith
6129 check_cflags -Wredundant-decls
6130 check_cflags -Wwrite-strings
6131 check_cflags -Wtype-limits
6132 check_cflags -Wundef
6133 check_cflags -Wmissing-prototypes
6134 check_cflags -Wno-pointer-to-int-cast
6135 check_cflags -Wstrict-prototypes
6136 check_cflags -Wempty-body
6137 enabled extra_warnings && check_cflags -Winline
6138 enabled extra_warnings && check_cflags -Wcast-qual
6139
6140 check_disable_warning(){
6141     warning_flag=-W${1#-Wno-}
6142     test_cflags $warning_flag && add_cflags $1
6143 }
6144
6145 check_disable_warning -Wno-parentheses
6146 check_disable_warning -Wno-switch
6147 check_disable_warning -Wno-format-zero-length
6148 check_disable_warning -Wno-pointer-sign
6149 check_disable_warning -Wno-unused-const-variable
6150
6151 # add some linker flags
6152 check_ldflags -Wl,--warn-common
6153 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6154 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
6155 enabled rpath && add_ldlibflags -Wl,-rpath,$libdir
6156 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6157
6158 # add some strip flags
6159 # -wN '..@*' is more selective than -x, but not available everywhere.
6160 check_stripflags -wN \'..@*\' || check_stripflags -x
6161
6162 enabled neon_clobber_test &&
6163     check_ldflags -Wl,--wrap,avcodec_open2              \
6164                   -Wl,--wrap,avcodec_decode_audio4      \
6165                   -Wl,--wrap,avcodec_decode_video2      \
6166                   -Wl,--wrap,avcodec_decode_subtitle2   \
6167                   -Wl,--wrap,avcodec_encode_audio2      \
6168                   -Wl,--wrap,avcodec_encode_video2      \
6169                   -Wl,--wrap,avcodec_encode_subtitle    \
6170                   -Wl,--wrap,avcodec_send_packet        \
6171                   -Wl,--wrap,avcodec_receive_packet     \
6172                   -Wl,--wrap,avcodec_send_frame         \
6173                   -Wl,--wrap,avcodec_receive_frame      \
6174                   -Wl,--wrap,swr_convert                \
6175                   -Wl,--wrap,avresample_convert ||
6176     disable neon_clobber_test
6177
6178 enabled xmm_clobber_test &&
6179     check_ldflags -Wl,--wrap,avcodec_open2              \
6180                   -Wl,--wrap,avcodec_decode_audio4      \
6181                   -Wl,--wrap,avcodec_decode_video2      \
6182                   -Wl,--wrap,avcodec_decode_subtitle2   \
6183                   -Wl,--wrap,avcodec_encode_audio2      \
6184                   -Wl,--wrap,avcodec_encode_video2      \
6185                   -Wl,--wrap,avcodec_encode_subtitle    \
6186                   -Wl,--wrap,avcodec_send_packet        \
6187                   -Wl,--wrap,avcodec_receive_packet     \
6188                   -Wl,--wrap,avcodec_send_frame         \
6189                   -Wl,--wrap,avcodec_receive_frame      \
6190                   -Wl,--wrap,swr_convert                \
6191                   -Wl,--wrap,avresample_convert         \
6192                   -Wl,--wrap,sws_scale ||
6193     disable xmm_clobber_test
6194
6195 check_ld "cc" <<EOF && enable proper_dce
6196 extern const int array[512];
6197 static inline int func(void) { return array[0]; }
6198 int main(void) { return 0; }
6199 EOF
6200
6201 if enabled proper_dce; then
6202     echo "X { local: *; };" > $TMPV
6203     if test_ldflags -Wl,${version_script},$TMPV; then
6204         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6205         check_cc <<EOF && enable symver_asm_label
6206 void ff_foo(void) __asm__ ("av_foo@VERSION");
6207 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6208 EOF
6209         check_cc <<EOF && enable symver_gnu_asm
6210 __asm__(".symver ff_foo,av_foo@VERSION");
6211 void ff_foo(void) {}
6212 EOF
6213     fi
6214 fi
6215
6216 if [ -z "$optflags" ]; then
6217     if enabled small; then
6218         optflags=$cflags_size
6219     elif enabled optimizations; then
6220         optflags=$cflags_speed
6221     else
6222         optflags=$cflags_noopt
6223     fi
6224 fi
6225
6226 check_optflags(){
6227     check_cflags "$@"
6228     enabled lto && check_ldflags "$@"
6229 }
6230
6231
6232 if enabled lto; then
6233     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6234     check_cflags  -flto
6235     check_ldflags -flto $cpuflags
6236     disable inline_asm_direct_symbol_refs
6237 fi
6238
6239 check_optflags $optflags
6240 check_optflags -fno-math-errno
6241 check_optflags -fno-signed-zeros
6242
6243 enabled ftrapv && check_cflags -ftrapv
6244
6245 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6246 int x;
6247 EOF
6248
6249
6250 if enabled icc; then
6251     # Just warnings, no remarks
6252     check_cflags -w1
6253     # -wd: Disable following warnings
6254     # 144, 167, 556: -Wno-pointer-sign
6255     # 188: enumerated type mixed with another type
6256     # 1292: attribute "foo" ignored
6257     # 1419: external declaration in primary source file
6258     # 10006: ignoring unknown option -fno-signed-zeros
6259     # 10148: ignoring unknown option -Wno-parentheses
6260     # 10156: ignoring option '-W'; no argument required
6261     # 13200: No EMMS instruction before call to function
6262     # 13203: No EMMS instruction before return from function
6263     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6264     # 11030: Warning unknown option --as-needed
6265     # 10156: ignoring option '-export'; no argument required
6266     check_ldflags -wd10156,11030
6267     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6268     enable ebp_available
6269     # The test above does not test linking
6270     enabled lto && disable symver_asm_label
6271     if enabled x86_32; then
6272         icc_version=$($cc -dumpversion)
6273         test ${icc_version%%.*} -ge 11 &&
6274             check_cflags -falign-stack=maintain-16-byte ||
6275             disable aligned_stack
6276     fi
6277 elif enabled ccc; then
6278     # disable some annoying warnings
6279     add_cflags -msg_disable bitnotint
6280     add_cflags -msg_disable mixfuncvoid
6281     add_cflags -msg_disable nonstandcast
6282     add_cflags -msg_disable unsupieee
6283 elif enabled gcc; then
6284     check_optflags -fno-tree-vectorize
6285     check_cflags -Werror=format-security
6286     check_cflags -Werror=implicit-function-declaration
6287     check_cflags -Werror=missing-prototypes
6288     check_cflags -Werror=return-type
6289     check_cflags -Werror=vla
6290     check_cflags -Wformat
6291     check_cflags -fdiagnostics-color=auto
6292     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6293 elif enabled llvm_gcc; then
6294     check_cflags -mllvm -stack-alignment=16
6295 elif enabled clang; then
6296     check_cflags -mllvm -stack-alignment=16
6297     check_cflags -mstack-alignment=16
6298     check_cflags -Qunused-arguments
6299     check_cflags -Werror=implicit-function-declaration
6300     check_cflags -Werror=missing-prototypes
6301     check_cflags -Werror=return-type
6302 elif enabled cparser; then
6303     add_cflags -Wno-missing-variable-declarations
6304     add_cflags -Wno-empty-statement
6305 elif enabled armcc; then
6306     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6307     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6308     # 2523: use of inline assembly is deprecated
6309     add_cflags -W${armcc_opt},--diag_suppress=2523
6310     add_cflags -W${armcc_opt},--diag_suppress=1207
6311     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6312     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6313     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6314     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6315 elif enabled tms470; then
6316     add_cflags -pds=824 -pds=837
6317     disable inline_asm
6318 elif enabled pathscale; then
6319     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6320 elif enabled_any msvc icl; then
6321     enabled x86_32 && disable aligned_stack
6322     enabled_all x86_32 debug && add_cflags -Oy-
6323     enabled debug && add_ldflags -debug
6324     enable pragma_deprecated
6325     if enabled icl; then
6326         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6327         # (correctly) on icl 13.x.
6328         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6329             add_cflags -Qansi-alias
6330         # Some inline asm is not compilable in debug
6331         if enabled debug; then
6332             disable ebp_available
6333             disable ebx_available
6334         fi
6335     fi
6336     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6337     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
6338     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6339     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6340     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6341     # MSVC 2013 and newer can handle it fine.
6342     # If this declspec fails, force including stdlib.h before the restrict redefinition
6343     # happens in config.h.
6344     if [ $_restrict != restrict ]; then
6345         check_cc <<EOF || add_cflags -FIstdlib.h
6346 __declspec($_restrict) void* foo(int);
6347 EOF
6348     fi
6349     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6350     # Issue has been fixed in MSVC v19.00.24218.
6351     check_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6352         check_cflags -d2SSAOptimizer-
6353     # enable utf-8 source processing on VS2015 U2 and newer
6354     check_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6355         add_cflags -utf-8
6356 fi
6357
6358 for pfx in "" host_; do
6359     varname=${pfx%_}cc_type
6360     eval "type=\$$varname"
6361     if [ $type = "msvc" ]; then
6362         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6363 static inline int foo(int a) { return a; }
6364 EOF
6365     fi
6366 done
6367
6368 case $as_type in
6369     clang)
6370         add_asflags -Qunused-arguments
6371     ;;
6372 esac
6373
6374 case $ld_type in
6375     clang)
6376         check_ldflags -Qunused-arguments
6377     ;;
6378 esac
6379
6380 case $target_os in
6381     osf1)
6382         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
6383     ;;
6384     plan9)
6385         add_cppflags -Dmain=plan9_main
6386     ;;
6387 esac
6388
6389 enable frame_thread_encoder
6390
6391 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6392
6393 check_deps $CONFIG_LIST       \
6394            $CONFIG_EXTRA      \
6395            $HAVE_LIST         \
6396            $ALL_COMPONENTS    \
6397
6398 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"
6399
6400
6401 if test $target_os = "haiku"; then
6402     disable memalign
6403     disable posix_memalign
6404 fi
6405
6406 enabled_all dxva2 dxva2api_cobj CoTaskMemFree &&
6407     prepend ffmpeg_libs $($ldflags_filter "-lole32") &&
6408     enable dxva2_lib
6409
6410 # add_dep lib dep
6411 # -> enable ${lib}_deps_${dep}
6412 # -> add $dep to ${lib}_deps only once
6413 add_dep() {
6414     lib=$1
6415     dep=$2
6416     enabled "${lib}_deps_${dep}" && return 0
6417     enable  "${lib}_deps_${dep}"
6418     prepend "${lib}_deps" $dep
6419 }
6420
6421 # merge deps lib components
6422 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
6423 merge_deps() {
6424     lib=$1
6425     shift
6426     for comp in $*; do
6427         enabled $comp || continue
6428         eval "dep=\"\$${comp}_deps\""
6429         for d in $dep; do
6430             add_dep $lib $d
6431         done
6432     done
6433 }
6434
6435 merge_deps libavfilter $FILTER_LIST
6436
6437 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6438
6439 for thread in $THREADS_LIST; do
6440     if enabled $thread; then
6441         test -n "$thread_type" &&
6442             die "ERROR: Only one thread type must be selected." ||
6443             thread_type="$thread"
6444     fi
6445 done
6446
6447 if disabled stdatomic_h; then
6448     if enabled atomics_gcc; then
6449         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6450     elif enabled atomics_win32; then
6451         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6452     elif enabled atomics_suncc; then
6453         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6454     elif enabled pthreads; then
6455         add_compat atomics/pthread/stdatomic.o
6456         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6457     else
6458         enabled threads && die "Threading is enabled, but no atomics are available"
6459         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6460     fi
6461 fi
6462
6463 # Check if requested libraries were found.
6464 for lib in $AUTODETECT_LIBS; do
6465     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6466 done
6467
6468 enabled zlib && add_cppflags -DZLIB_CONST
6469
6470 # conditional library dependencies, in linking order
6471 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6472 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6473 enabled aresample_filter    && prepend avfilter_deps "swresample"
6474 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6475 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6476 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6477 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6478 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6479 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6480 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6481 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6482 enabled pan_filter          && prepend avfilter_deps "swresample"
6483 enabled pp_filter           && prepend avfilter_deps "postproc"
6484 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6485 enabled resample_filter && prepend avfilter_deps "avresample"
6486 enabled sab_filter          && prepend avfilter_deps "swscale"
6487 enabled scale_filter    && prepend avfilter_deps "swscale"
6488 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6489 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6490 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6491 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6492 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6493 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6494 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6495 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6496 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6497
6498 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6499
6500 enabled opus_decoder    && prepend avcodec_deps "swresample"
6501
6502 expand_deps(){
6503     lib_deps=${1}_deps
6504     eval "deps=\$$lib_deps"
6505     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6506     unique $lib_deps
6507 }
6508
6509 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6510 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6511
6512 map 'expand_deps $v' $LIBRARY_LIST
6513
6514 license="LGPL version 2.1 or later"
6515 if enabled nonfree; then
6516     license="nonfree and unredistributable"
6517 elif enabled gplv3; then
6518     license="GPL version 3 or later"
6519 elif enabled lgplv3; then
6520     license="LGPL version 3 or later"
6521 elif enabled gpl; then
6522     license="GPL version 2 or later"
6523 fi
6524
6525 if test "$quiet" != "yes"; then
6526
6527 echo "install prefix            $prefix"
6528 echo "source path               $source_path"
6529 echo "C compiler                $cc"
6530 echo "C library                 $libc_type"
6531 if test "$host_cc" != "$cc"; then
6532     echo "host C compiler           $host_cc"
6533     echo "host C library            $host_libc_type"
6534 fi
6535 echo "ARCH                      $arch ($cpu)"
6536 if test "$build_suffix" != ""; then
6537     echo "build suffix              $build_suffix"
6538 fi
6539 if test "$progs_suffix" != ""; then
6540     echo "progs suffix              $progs_suffix"
6541 fi
6542 if test "$extra_version" != ""; then
6543     echo "version string suffix     $extra_version"
6544 fi
6545 echo "big-endian                ${bigendian-no}"
6546 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6547 if enabled x86; then
6548     echo "${yasmexe}                      ${yasm-no}"
6549     echo "MMX enabled               ${mmx-no}"
6550     echo "MMXEXT enabled            ${mmxext-no}"
6551     echo "3DNow! enabled            ${amd3dnow-no}"
6552     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6553     echo "SSE enabled               ${sse-no}"
6554     echo "SSSE3 enabled             ${ssse3-no}"
6555     echo "AESNI enabled             ${aesni-no}"
6556     echo "AVX enabled               ${avx-no}"
6557     echo "XOP enabled               ${xop-no}"
6558     echo "FMA3 enabled              ${fma3-no}"
6559     echo "FMA4 enabled              ${fma4-no}"
6560     echo "i686 features enabled     ${i686-no}"
6561     echo "CMOV is fast              ${fast_cmov-no}"
6562     echo "EBX available             ${ebx_available-no}"
6563     echo "EBP available             ${ebp_available-no}"
6564 fi
6565 if enabled aarch64; then
6566     echo "NEON enabled              ${neon-no}"
6567     echo "VFP enabled               ${vfp-no}"
6568 fi
6569 if enabled arm; then
6570     echo "ARMv5TE enabled           ${armv5te-no}"
6571     echo "ARMv6 enabled             ${armv6-no}"
6572     echo "ARMv6T2 enabled           ${armv6t2-no}"
6573     echo "VFP enabled               ${vfp-no}"
6574     echo "NEON enabled              ${neon-no}"
6575     echo "THUMB enabled             ${thumb-no}"
6576 fi
6577 if enabled mips; then
6578     echo "MIPS FPU enabled          ${mipsfpu-no}"
6579     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6580     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6581     echo "MIPS MSA enabled          ${msa-no}"
6582     echo "LOONGSON MMI enabled      ${mmi-no}"
6583 fi
6584 if enabled ppc; then
6585     echo "AltiVec enabled           ${altivec-no}"
6586     echo "VSX enabled               ${vsx-no}"
6587     echo "POWER8 enabled            ${power8-no}"
6588     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6589     echo "dcbzl available           ${dcbzl-no}"
6590 fi
6591 echo "debug symbols             ${debug-no}"
6592 echo "strip symbols             ${stripping-no}"
6593 echo "optimize for size         ${small-no}"
6594 echo "optimizations             ${optimizations-no}"
6595 echo "static                    ${static-no}"
6596 echo "shared                    ${shared-no}"
6597 echo "postprocessing support    ${postproc-no}"
6598 echo "network support           ${network-no}"
6599 echo "threading support         ${thread_type-no}"
6600 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6601 echo "texi2html enabled         ${texi2html-no}"
6602 echo "perl enabled              ${perl-no}"
6603 echo "pod2man enabled           ${pod2man-no}"
6604 echo "makeinfo enabled          ${makeinfo-no}"
6605 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6606 test -n "$random_seed" &&
6607     echo "random seed               ${random_seed}"
6608 echo
6609
6610 echo "External libraries:"
6611 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_in_columns
6612 echo
6613
6614 echo "External libraries providing hardware acceleration:"
6615 print_enabled '' $HWACCEL_LIBRARY_LIST | print_in_columns
6616 echo
6617
6618 echo "Libraries:"
6619 print_enabled '' $LIBRARY_LIST | print_in_columns
6620 echo
6621
6622 echo "Programs:"
6623 print_enabled '' $PROGRAM_LIST | print_in_columns
6624 echo
6625
6626 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6627     echo "Enabled ${type}s:"
6628     eval list=\$$(toupper $type)_LIST
6629     print_enabled '_*' $list | print_in_columns
6630     echo
6631 done
6632
6633 echo "License: $license"
6634
6635 echo "Creating configuration files ..."
6636
6637 fi # test "$quiet" != "yes"
6638
6639 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6640
6641 enabled stripping || strip="echo skipping strip"
6642
6643 config_files="$TMPH config.mak doc/config.texi"
6644
6645 cat > config.mak <<EOF
6646 # Automatically generated by configure - do not modify!
6647 ifndef FFMPEG_CONFIG_MAK
6648 FFMPEG_CONFIG_MAK=1
6649 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6650 prefix=$prefix
6651 LIBDIR=\$(DESTDIR)$libdir
6652 SHLIBDIR=\$(DESTDIR)$shlibdir
6653 INCDIR=\$(DESTDIR)$incdir
6654 BINDIR=\$(DESTDIR)$bindir
6655 DATADIR=\$(DESTDIR)$datadir
6656 DOCDIR=\$(DESTDIR)$docdir
6657 MANDIR=\$(DESTDIR)$mandir
6658 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6659 INSTALL_NAME_DIR=$install_name_dir
6660 SRC_PATH=$source_path
6661 SRC_LINK=$source_link
6662 ifndef MAIN_MAKEFILE
6663 SRC_PATH:=\$(SRC_PATH:.%=..%)
6664 endif
6665 CC_IDENT=$cc_ident
6666 ARCH=$arch
6667 INTRINSICS=$intrinsics
6668 CC=$cc
6669 CXX=$cxx
6670 AS=$as
6671 OBJCC=$objcc
6672 LD=$ld
6673 DEPCC=$dep_cc
6674 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6675 DEPAS=$as
6676 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6677 YASM=$yasmexe
6678 DEPYASM=$yasmexe
6679 AR=$ar
6680 ARFLAGS=$arflags
6681 AR_O=$ar_o
6682 RANLIB=$ranlib
6683 STRIP=$strip
6684 CP=cp -p
6685 LN_S=$ln_s
6686 CPPFLAGS=$CPPFLAGS
6687 CFLAGS=$CFLAGS
6688 CXXFLAGS=$CXXFLAGS
6689 OBJCFLAGS=$OBJCFLAGS
6690 ASFLAGS=$ASFLAGS
6691 AS_C=$AS_C
6692 AS_O=$AS_O
6693 OBJCC_C=$OBJCC_C
6694 OBJCC_E=$OBJCC_E
6695 OBJCC_O=$OBJCC_O
6696 CC_C=$CC_C
6697 CC_E=$CC_E
6698 CC_O=$CC_O
6699 CXX_C=$CXX_C
6700 CXX_O=$CXX_O
6701 LD_O=$LD_O
6702 LD_LIB=$LD_LIB
6703 LD_PATH=$LD_PATH
6704 DLLTOOL=$dlltool
6705 WINDRES=$windres
6706 DEPWINDRES=$dep_cc
6707 DOXYGEN=$doxygen
6708 LDFLAGS=$LDFLAGS
6709 LDEXEFLAGS=$LDEXEFLAGS
6710 LDLIBFLAGS=$LDLIBFLAGS
6711 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
6712 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
6713 YASMFLAGS=$YASMFLAGS
6714 BUILDSUF=$build_suffix
6715 PROGSSUF=$progs_suffix
6716 FULLNAME=$FULLNAME
6717 LIBPREF=$LIBPREF
6718 LIBSUF=$LIBSUF
6719 LIBNAME=$LIBNAME
6720 SLIBPREF=$SLIBPREF
6721 SLIBSUF=$SLIBSUF
6722 EXESUF=$EXESUF
6723 EXTRA_VERSION=$extra_version
6724 CCDEP=$CCDEP
6725 CXXDEP=$CXXDEP
6726 CCDEP_FLAGS=$CCDEP_FLAGS
6727 ASDEP=$ASDEP
6728 ASDEP_FLAGS=$ASDEP_FLAGS
6729 CC_DEPFLAGS=$CC_DEPFLAGS
6730 AS_DEPFLAGS=$AS_DEPFLAGS
6731 HOSTCC=$host_cc
6732 HOSTLD=$host_ld
6733 HOSTCFLAGS=$host_cflags
6734 HOSTCPPFLAGS=$host_cppflags
6735 HOSTEXESUF=$HOSTEXESUF
6736 HOSTLDFLAGS=$host_ldflags
6737 HOSTLIBS=$host_libs
6738 DEPHOSTCC=$host_cc
6739 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
6740 HOSTCCDEP=$HOSTCCDEP
6741 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
6742 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
6743 HOSTCC_C=$HOSTCC_C
6744 HOSTCC_O=$HOSTCC_O
6745 HOSTLD_O=$HOSTLD_O
6746 TARGET_EXEC=$target_exec $target_exec_args
6747 TARGET_PATH=$target_path
6748 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
6749 CFLAGS-ffplay=${sdl2_cflags}
6750 ZLIB=$($ldflags_filter -lz)
6751 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
6752 EXTRALIBS=$extralibs
6753 COMPAT_OBJS=$compat_objs
6754 EXEOBJS=$exeobjs
6755 INSTALL=$install
6756 LIBTARGET=${LIBTARGET}
6757 SLIBNAME=${SLIBNAME}
6758 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
6759 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
6760 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
6761 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
6762 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
6763 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
6764 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
6765 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
6766 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
6767 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
6768 NOREDZONE_FLAGS=$noredzone_flags
6769 EOF
6770
6771 get_version(){
6772     lcname=lib${1}
6773     name=$(toupper $lcname)
6774     file=$source_path/$lcname/version.h
6775     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
6776     enabled raise_major && eval ${name}_VERSION_MAJOR=$((${name}_VERSION_MAJOR+100))
6777     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
6778     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
6779     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
6780     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
6781 }
6782
6783 map 'get_version $v' $LIBRARY_LIST
6784
6785 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> config.mak' $LIBRARY_LIST
6786
6787 print_program_libs(){
6788     eval "program_libs=\$${1}_libs"
6789     eval echo "LIBS-${1}=${program_libs}" >> config.mak
6790 }
6791
6792 map 'print_program_libs $v' $PROGRAM_LIST
6793
6794 cat > $TMPH <<EOF
6795 /* Automatically generated by configure - do not modify! */
6796 #ifndef FFMPEG_CONFIG_H
6797 #define FFMPEG_CONFIG_H
6798 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
6799 #define FFMPEG_LICENSE "$(c_escape $license)"
6800 #define CONFIG_THIS_YEAR 2017
6801 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
6802 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
6803 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
6804 #define av_restrict $_restrict
6805 #define EXTERN_PREFIX "${extern_prefix}"
6806 #define EXTERN_ASM ${extern_prefix}
6807 #define BUILDSUF "$build_suffix"
6808 #define SLIBSUF "$SLIBSUF"
6809 #define HAVE_MMX2 HAVE_MMXEXT
6810 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
6811 EOF
6812
6813 test -n "$assert_level" &&
6814     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
6815
6816 test -n "$malloc_prefix" &&
6817     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
6818
6819 if enabled yasm; then
6820     append config_files $TMPASM
6821     printf '' >$TMPASM
6822 fi
6823
6824 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
6825
6826
6827 mkdir -p doc
6828 mkdir -p tests
6829 mkdir -p tests/api
6830 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
6831
6832 print_config ARCH_   "$config_files" $ARCH_LIST
6833 print_config HAVE_   "$config_files" $HAVE_LIST
6834 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
6835                                      $CONFIG_EXTRA      \
6836                                      $ALL_COMPONENTS    \
6837
6838 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
6839 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
6840
6841 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
6842 cp_if_changed $TMPH config.h
6843 touch .config
6844
6845 enabled yasm && cp_if_changed $TMPASM config.asm
6846
6847 cat > $TMPH <<EOF
6848 /* Generated by ffconf */
6849 #ifndef AVUTIL_AVCONFIG_H
6850 #define AVUTIL_AVCONFIG_H
6851 EOF
6852
6853 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
6854
6855 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
6856
6857 cp_if_changed $TMPH libavutil/avconfig.h
6858
6859 # generate the lists of enabled components
6860 print_enabled_components(){
6861     file=$1
6862     struct_name=$2
6863     name=$3
6864     shift 3
6865     echo "static const $struct_name *$name[] = {" > $TMPH
6866     for c in $*; do
6867         enabled $c && printf "    &ff_%s,\n" $c >> $TMPH
6868     done
6869     echo "    NULL };" >> $TMPH
6870     cp_if_changed $TMPH $file
6871 }
6872
6873 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
6874 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
6875
6876 if test -n "$WARNINGS"; then
6877     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
6878     enabled fatal_warnings && exit 1
6879 fi
6880
6881 # build pkg-config files
6882
6883 lib_version(){
6884     eval printf "\"lib${1}${build_suffix} >= \$LIB$(toupper ${1})_VERSION, \""
6885 }
6886
6887 pkgconfig_generate(){
6888     name=$1
6889     shortname=${name#lib}${build_suffix}
6890     comment=$2
6891     version=$3
6892     libs=$4
6893     requires=$(map 'lib_version $v' $(eval echo \$${name#lib}_deps))
6894     requires=${requires%, }
6895     enabled ${name#lib} || return 0
6896     mkdir -p $name
6897     cat <<EOF > $name/$name${build_suffix}.pc
6898 prefix=$prefix
6899 exec_prefix=\${prefix}
6900 libdir=$libdir
6901 includedir=$incdir
6902
6903 Name: $name
6904 Description: $comment
6905 Version: $version
6906 Requires: $(enabled shared || echo $requires)
6907 Requires.private: $(enabled shared && echo $requires)
6908 Conflicts:
6909 Libs: -L\${libdir} $(enabled rpath && echo "-Wl,-rpath,\${libdir}") -l${shortname} $(enabled shared || echo $libs)
6910 Libs.private: $(enabled shared && echo $libs)
6911 Cflags: -I\${includedir}
6912 EOF
6913
6914 mkdir -p doc/examples/pc-uninstalled
6915 includedir=${source_path}
6916 [ "$includedir" = . ] && includedir="\${pcfiledir}/../../.."
6917     cat <<EOF > doc/examples/pc-uninstalled/${name}-uninstalled.pc
6918 prefix=
6919 exec_prefix=
6920 libdir=\${pcfiledir}/../../../$name
6921 includedir=${includedir}
6922
6923 Name: $name
6924 Description: $comment
6925 Version: $version
6926 Requires: $requires
6927 Conflicts:
6928 Libs: -L\${libdir} -Wl,-rpath,\${libdir} -l${shortname} $(enabled shared || echo $libs)
6929 Cflags: -I\${includedir}
6930 EOF
6931 }
6932
6933 pkgconfig_generate libavutil     "FFmpeg utility library"               "$LIBAVUTIL_VERSION"     "$LIBRT $LIBM"
6934 pkgconfig_generate libavcodec    "FFmpeg codec library"                 "$LIBAVCODEC_VERSION"    "$extralibs"
6935 pkgconfig_generate libavformat   "FFmpeg container format library"      "$LIBAVFORMAT_VERSION"   "$extralibs"
6936 pkgconfig_generate libavdevice   "FFmpeg device handling library"       "$LIBAVDEVICE_VERSION"   "$extralibs"
6937 pkgconfig_generate libavfilter   "FFmpeg audio/video filtering library" "$LIBAVFILTER_VERSION"   "$extralibs"
6938 pkgconfig_generate libpostproc   "FFmpeg postprocessing library"        "$LIBPOSTPROC_VERSION"   ""
6939 pkgconfig_generate libavresample "Libav audio resampling library"       "$LIBAVRESAMPLE_VERSION" "$LIBM"
6940 pkgconfig_generate libswscale    "FFmpeg image rescaling library"       "$LIBSWSCALE_VERSION"    "$LIBM"
6941 pkgconfig_generate libswresample "FFmpeg audio resampling library"      "$LIBSWRESAMPLE_VERSION" "$LIBM $LIBSOXR"