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) printf '%s ' $v ;; esac"
 527     done
 528 }
 529
 530 filter_out(){
 531     pat=$1
 532     shift
 533     for v; do
 534         eval "case $v in $pat) ;; *) printf '%s ' $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_cflags_headers(){
 832     append CFLAGS_HEADERS $($cflags_filter "$@")
 833 }
 834
 835 add_cxxflags(){
 836     append CXXFLAGS $($cflags_filter "$@")
 837 }
 838
 839 add_asflags(){
 840     append ASFLAGS $($asflags_filter "$@")
 841 }
 842
 843 add_objcflags(){
 844     append OBJCFLAGS $($objcflags_filter "$@")
 845 }
 846
 847 add_ldflags(){
 848     append LDFLAGS $($ldflags_filter "$@")
 849 }
 850
 851 add_ldexeflags(){
 852     append LDEXEFLAGS $($ldflags_filter "$@")
 853 }
 854
 855 add_ldlibflags(){
 856     append LDLIBFLAGS $($ldflags_filter "$@")
 857 }
 858
 859 add_stripflags(){
 860     append ASMSTRIPFLAGS "$@"
 861 }
 862
 863 add_extralibs(){
 864     prepend extralibs $($ldflags_filter "$@")
 865 }
 866
 867 add_host_cppflags(){
 868     append host_cppflags "$@"
 869 }
 870
 871 add_host_cflags(){
 872     append host_cflags $($host_cflags_filter "$@")
 873 }
 874
 875 add_host_ldflags(){
 876     append host_ldflags $($host_ldflags_filter "$@")
 877 }
 878
 879 add_compat(){
 880     append compat_objs $1
 881     shift
 882     map 'add_cppflags -D$v' "$@"
 883 }
 884
 885 check_cmd(){
 886     log "$@"
 887     "$@" >> $logfile 2>&1
 888 }
 889
 890 check_stat(){
 891     log check_stat "$@"
 892     stat "$1" >> $logfile 2>&1
 893 }
 894
 895 cc_o(){
 896     eval printf '%s\\n' $CC_O
 897 }
 898
 899 cc_e(){
 900     eval printf '%s\\n' $CC_E
 901 }
 902
 903 check_cc(){
 904     log check_cc "$@"
 905     cat > $TMPC
 906     log_file $TMPC
 907     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 908 }
 909
 910 check_cxx(){
 911     log check_cxx "$@"
 912     cat > $TMPCPP
 913     log_file $TMPCPP
 914     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 915 }
 916
 917 check_objcc(){
 918     log check_objcc "$@"
 919     cat > $TMPM
 920     log_file $TMPM
 921     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
 922 }
 923
 924 check_cpp(){
 925     log check_cpp "$@"
 926     cat > $TMPC
 927     log_file $TMPC
 928     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 929 }
 930
 931 as_o(){
 932     eval printf '%s\\n' $AS_O
 933 }
 934
 935 check_as(){
 936     log check_as "$@"
 937     cat > $TMPS
 938     log_file $TMPS
 939     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 940 }
 941
 942 check_inline_asm(){
 943     log check_inline_asm "$@"
 944     name="$1"
 945     code="$2"
 946     shift 2
 947     disable $name
 948     check_cc "$@" <<EOF && enable $name
 949 void foo(void){ __asm__ volatile($code); }
 950 EOF
 951 }
 952
 953 check_inline_asm_flags(){
 954     log check_inline_asm_flags "$@"
 955     name="$1"
 956     code="$2"
 957     flags=''
 958     shift 2
 959     while [ "$1" != "" ]; do
 960       append flags $1
 961       shift
 962     done;
 963     disable $name
 964     cat > $TMPC <<EOF
 965 void foo(void){ __asm__ volatile($code); }
 966 EOF
 967     log_file $TMPC
 968     check_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
 969     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
 970 }
 971
 972 check_insn(){
 973     log check_insn "$@"
 974     check_inline_asm ${1}_inline "\"$2\""
 975     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 976 }
 977
 978 check_yasm(){
 979     log check_yasm "$@"
 980     echo "$1" > $TMPS
 981     log_file $TMPS
 982     shift 1
 983     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
 984 }
 985
 986 ld_o(){
 987     eval printf '%s\\n' $LD_O
 988 }
 989
 990 check_ld(){
 991     log check_ld "$@"
 992     type=$1
 993     shift 1
 994     flags=$(filter_out '-l*|*.so' $@)
 995     libs=$(filter '-l*|*.so' $@)
 996     check_$type $($cflags_filter $flags) || return
 997     flags=$($ldflags_filter $flags)
 998     libs=$($ldflags_filter $libs)
 999     check_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1000 }
1001
1002 print_include(){
1003     hdr=$1
1004     test "${hdr%.h}" = "${hdr}" &&
1005         echo "#include $hdr"    ||
1006         echo "#include <$hdr>"
1007 }
1008
1009 check_code(){
1010     log check_code "$@"
1011     check=$1
1012     headers=$2
1013     code=$3
1014     shift 3
1015     {
1016         for hdr in $headers; do
1017             print_include $hdr
1018         done
1019         echo "int main(void) { $code; return 0; }"
1020     } | check_$check "$@"
1021 }
1022
1023 check_cppflags(){
1024     log check_cppflags "$@"
1025     check_cpp "$@" <<EOF && append CPPFLAGS "$@"
1026 int x;
1027 EOF
1028 }
1029
1030 test_cflags(){
1031     log test_cflags "$@"
1032     set -- $($cflags_filter "$@")
1033     check_cc "$@" <<EOF
1034 int x;
1035 EOF
1036 }
1037
1038 check_cflags(){
1039     log check_cflags "$@"
1040     test_cflags "$@" && add_cflags "$@"
1041 }
1042
1043 check_cxxflags(){
1044     log check_cxxflags "$@"
1045     set -- $($cflags_filter "$@")
1046     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
1047 int x;
1048 EOF
1049 }
1050
1051 test_objcflags(){
1052     log test_objcflags "$@"
1053     set -- $($objcflags_filter "$@")
1054     check_objcc "$@" <<EOF
1055 int x;
1056 EOF
1057 }
1058
1059 check_objcflags(){
1060     log check_objcflags "$@"
1061     test_objcflags "$@" && add_objcflags "$@"
1062 }
1063
1064 test_ldflags(){
1065     log test_ldflags "$@"
1066     check_ld "cc" "$@" <<EOF
1067 int main(void){ return 0; }
1068 EOF
1069 }
1070
1071 check_ldflags(){
1072     log check_ldflags "$@"
1073     test_ldflags "$@" && add_ldflags "$@"
1074 }
1075
1076 test_stripflags(){
1077     log test_stripflags "$@"
1078     # call check_cc to get a fresh TMPO
1079     check_cc <<EOF
1080 int main(void) { return 0; }
1081 EOF
1082     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1083 }
1084
1085 check_stripflags(){
1086     log check_stripflags "$@"
1087     test_stripflags "$@" && add_stripflags "$@"
1088 }
1089
1090 check_header(){
1091     log check_header "$@"
1092     header=$1
1093     shift
1094     disable_safe $header
1095     check_cpp "$@" <<EOF && enable_safe $header
1096 #include <$header>
1097 int x;
1098 EOF
1099 }
1100
1101 check_header_objcc(){
1102     log check_header_objcc "$@"
1103     rm -f -- "$TMPO"
1104     header=$1
1105     shift
1106     disable_safe $header
1107     {
1108        echo "#include <$header>"
1109        echo "int main(void) { return 0; }"
1110     } | check_objcc && check_stat "$TMPO" && enable_safe $headers
1111 }
1112
1113 check_func(){
1114     log check_func "$@"
1115     func=$1
1116     shift
1117     disable $func
1118     check_ld "cc" "$@" <<EOF && enable $func
1119 extern int $func();
1120 int main(void){ $func(); }
1121 EOF
1122 }
1123
1124 check_complexfunc(){
1125     log check_complexfunc "$@"
1126     func=$1
1127     narg=$2
1128     shift 2
1129     test $narg = 2 && args="f, g" || args="f * I"
1130     disable $func
1131     check_ld "cc" "$@" <<EOF && enable $func
1132 #include <complex.h>
1133 #include <math.h>
1134 float foo(complex float f, complex float g) { return $func($args); }
1135 int main(void){ return (int) foo; }
1136 EOF
1137 }
1138
1139 check_mathfunc(){
1140     log check_mathfunc "$@"
1141     func=$1
1142     narg=$2
1143     shift 2
1144     test $narg = 2 && args="f, g" || args="f"
1145     disable $func
1146     check_ld "cc" "$@" <<EOF && enable $func
1147 #include <math.h>
1148 float foo(float f, float g) { return $func($args); }
1149 int main(void){ return (int) foo; }
1150 EOF
1151 }
1152
1153 check_func_headers(){
1154     log check_func_headers "$@"
1155     headers=$1
1156     funcs=$2
1157     shift 2
1158     {
1159         for hdr in $headers; do
1160             print_include $hdr
1161         done
1162         echo "#include <stdint.h>"
1163         for func in $funcs; do
1164             echo "long check_$func(void) { return (long) $func; }"
1165         done
1166         echo "int main(void) { int ret = 0;"
1167         # LTO could optimize out the test functions without this
1168         for func in $funcs; do
1169             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1170         done
1171         echo "return ret; }"
1172     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1173 }
1174
1175 check_class_headers_cpp(){
1176     log check_class_headers_cpp "$@"
1177     headers=$1
1178     classes=$2
1179     shift 2
1180     {
1181         for hdr in $headers; do
1182             echo "#include <$hdr>"
1183         done
1184         echo "int main(void) { "
1185         i=1
1186         for class in $classes; do
1187             echo "$class obj$i;"
1188             i=$(expr $i + 1)
1189         done
1190         echo "return 0; }"
1191     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1192 }
1193
1194 check_cpp_condition(){
1195     log check_cpp_condition "$@"
1196     header=$1
1197     condition=$2
1198     shift 2
1199     check_cpp "$@" <<EOF
1200 #include <$header>
1201 #if !($condition)
1202 #error "unsatisfied condition: $condition"
1203 #endif
1204 EOF
1205 }
1206
1207 test_cflags_cc(){
1208     log test_cflags_cc "$@"
1209     flags=$1
1210     header=$2
1211     condition=$3
1212     shift 3
1213     set -- $($cflags_filter "$flags")
1214     check_cc "$@" <<EOF
1215 #include <$header>
1216 #if !($condition)
1217 #error "unsatisfied condition: $condition"
1218 #endif
1219 EOF
1220 }
1221
1222 check_lib(){
1223     log check_lib "$@"
1224     headers="$1"
1225     funcs="$2"
1226     shift 2
1227     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1228 }
1229
1230 check_lib_cpp(){
1231     log check_lib_cpp "$@"
1232     headers="$1"
1233     classes="$2"
1234     shift 2
1235     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1236 }
1237
1238 check_pkg_config(){
1239     log check_pkg_config "$@"
1240     pkg_version="$1"
1241     pkg="${1%% *}"
1242     headers="$2"
1243     funcs="$3"
1244     shift 3
1245     check_cmd $pkg_config --exists --print-errors $pkg_version || return
1246     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1247     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1248     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1249         set_safe "${pkg}_cflags" $pkg_cflags   &&
1250         set_safe "${pkg}_libs"   $pkg_libs
1251 }
1252
1253 check_exec(){
1254     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1255 }
1256
1257 check_exec_crash(){
1258     log check_exec_crash "$@"
1259     code=$(cat)
1260
1261     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1262     # are safe but may not be available everywhere.  Thus we use
1263     # raise(SIGTERM) instead.  The check is run in a subshell so we
1264     # can redirect the "Terminated" message from the shell.  SIGBUS
1265     # is not defined by standard C so it is used conditionally.
1266
1267     (check_exec "$@") >> $logfile 2>&1 <<EOF
1268 #include <signal.h>
1269 static void sighandler(int sig){
1270     raise(SIGTERM);
1271 }
1272 int foo(void){
1273     $code
1274 }
1275 int (*func_ptr)(void) = foo;
1276 int main(void){
1277     signal(SIGILL, sighandler);
1278     signal(SIGFPE, sighandler);
1279     signal(SIGSEGV, sighandler);
1280 #ifdef SIGBUS
1281     signal(SIGBUS, sighandler);
1282 #endif
1283     return func_ptr();
1284 }
1285 EOF
1286 }
1287
1288 check_type(){
1289     log check_type "$@"
1290     headers=$1
1291     type=$2
1292     shift 2
1293     disable_safe "$type"
1294     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1295 }
1296
1297 check_struct(){
1298     log check_struct "$@"
1299     headers=$1
1300     struct=$2
1301     member=$3
1302     shift 3
1303     disable_safe "${struct}_${member}"
1304     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1305         enable_safe "${struct}_${member}"
1306 }
1307
1308 check_builtin(){
1309     log check_builtin "$@"
1310     name=$1
1311     headers=$2
1312     builtin=$3
1313     shift 3
1314     disable "$name"
1315     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1316 }
1317
1318 check_compile_assert(){
1319     log check_compile_assert "$@"
1320     name=$1
1321     headers=$2
1322     condition=$3
1323     shift 3
1324     disable "$name"
1325     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1326 }
1327
1328 require(){
1329     log require "$@"
1330     name_version="$1"
1331     headers="$2"
1332     func="$3"
1333     shift 3
1334     check_lib "$headers" $func "$@" || die "ERROR: $name_version not found"
1335 }
1336
1337 require_cpp(){
1338     name="$1"
1339     headers="$2"
1340     classes="$3"
1341     shift 3
1342     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1343 }
1344
1345 use_pkg_config(){
1346     log use_pkg_config "$@"
1347     pkg="$1"
1348     check_pkg_config "$@" || return 1
1349     add_cflags    $(get_safe "${pkg}_cflags")
1350     add_extralibs $(get_safe "${pkg}_libs")
1351 }
1352
1353 require_pkg_config(){
1354     use_pkg_config "$@" || die "ERROR: $pkg not found using pkg-config$pkg_config_fail_message"
1355 }
1356
1357 require_libfreetype(){
1358     log require_libfreetype "$@"
1359     pkg="freetype2"
1360     check_cmd $pkg_config --exists --print-errors $pkg \
1361       || die "ERROR: $pkg not found"
1362     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1363     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1364     {
1365         echo "#include <ft2build.h>"
1366         echo "#include FT_FREETYPE_H"
1367         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1368         echo "int main(void) { return 0; }"
1369     } | check_ld "cc" $pkg_cflags $pkg_libs \
1370       && set_safe "${pkg}_cflags" $pkg_cflags \
1371       && set_safe "${pkg}_libs"   $pkg_libs \
1372       || die "ERROR: $pkg not found"
1373     add_cflags    $(get_safe "${pkg}_cflags")
1374     add_extralibs $(get_safe "${pkg}_libs")
1375 }
1376
1377 hostcc_e(){
1378     eval printf '%s\\n' $HOSTCC_E
1379 }
1380
1381 hostcc_o(){
1382     eval printf '%s\\n' $HOSTCC_O
1383 }
1384
1385 check_host_cc(){
1386     log check_host_cc "$@"
1387     cat > $TMPC
1388     log_file $TMPC
1389     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1390 }
1391
1392 check_host_cpp(){
1393     log check_host_cpp "$@"
1394     cat > $TMPC
1395     log_file $TMPC
1396     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1397 }
1398
1399 check_host_cppflags(){
1400     log check_host_cppflags "$@"
1401     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1402 int x;
1403 EOF
1404 }
1405
1406 check_host_cflags(){
1407     log check_host_cflags "$@"
1408     set -- $($host_cflags_filter "$@")
1409     check_host_cc "$@" <<EOF && append host_cflags "$@"
1410 int x;
1411 EOF
1412 }
1413
1414 check_host_cpp_condition(){
1415     log check_host_cpp_condition "$@"
1416     header=$1
1417     condition=$2
1418     shift 2
1419     check_host_cpp "$@" <<EOF
1420 #include <$header>
1421 #if !($condition)
1422 #error "unsatisfied condition: $condition"
1423 #endif
1424 EOF
1425 }
1426
1427 cp_if_changed(){
1428     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1429     mkdir -p "$(dirname $2)"
1430     cp -f "$1" "$2"
1431 }
1432
1433 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1434 # system-dependent things.
1435
1436 AVCODEC_COMPONENTS="
1437     bsfs
1438     decoders
1439     encoders
1440     hwaccels
1441     parsers
1442 "
1443
1444 AVDEVICE_COMPONENTS="
1445     indevs
1446     outdevs
1447 "
1448 AVFILTER_COMPONENTS="
1449     filters
1450 "
1451 AVFORMAT_COMPONENTS="
1452     demuxers
1453     muxers
1454     protocols
1455 "
1456
1457 AVRESAMPLE_COMPONENTS=""
1458 AVUTIL_COMPONENTS=""
1459
1460 COMPONENT_LIST="
1461     $AVCODEC_COMPONENTS
1462     $AVDEVICE_COMPONENTS
1463     $AVFILTER_COMPONENTS
1464     $AVFORMAT_COMPONENTS
1465     $AVRESAMPLE_COMPONENTS
1466     $AVUTIL_COMPONENTS
1467 "
1468
1469 EXAMPLE_LIST="
1470     avio_dir_cmd_example
1471     avio_reading_example
1472     decode_audio_example
1473     decode_video_example
1474     demuxing_decoding_example
1475     encode_audio_example
1476     encode_video_example
1477     extract_mvs_example
1478     filter_audio_example
1479     filtering_audio_example
1480     filtering_video_example
1481     http_multiclient_example
1482     metadata_example
1483     muxing_example
1484     qsvdec_example
1485     remuxing_example
1486     resampling_audio_example
1487     scaling_video_example
1488     transcode_aac_example
1489     transcoding_example
1490 "
1491 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1492     bzlib
1493     iconv
1494     libxcb
1495     libxcb_shm
1496     libxcb_shape
1497     libxcb_xfixes
1498     lzma
1499     schannel
1500     sdl
1501     sdl2
1502     securetransport
1503     xlib
1504     zlib
1505 "
1506
1507 EXTERNAL_LIBRARY_GPL_LIST="
1508     avisynth
1509     frei0r
1510     libcdio
1511     librubberband
1512     libvidstab
1513     libx264
1514     libx265
1515     libxavs
1516     libxvid
1517 "
1518
1519 EXTERNAL_LIBRARY_NONFREE_LIST="
1520     decklink
1521     libfdk_aac
1522     openssl
1523 "
1524
1525 EXTERNAL_LIBRARY_VERSION3_LIST="
1526     gmp
1527     libopencore_amrnb
1528     libopencore_amrwb
1529     libvo_amrwbenc
1530 "
1531
1532 EXTERNAL_LIBRARY_GPLV3_LIST="
1533     libsmbclient
1534 "
1535
1536 EXTERNAL_LIBRARY_LIST="
1537     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1538     $EXTERNAL_LIBRARY_GPL_LIST
1539     $EXTERNAL_LIBRARY_NONFREE_LIST
1540     $EXTERNAL_LIBRARY_VERSION3_LIST
1541     $EXTERNAL_LIBRARY_GPLV3_LIST
1542     chromaprint
1543     crystalhd
1544     gcrypt
1545     gnutls
1546     jni
1547     ladspa
1548     libass
1549     libbluray
1550     libbs2b
1551     libcaca
1552     libcelt
1553     libdc1394
1554     libflite
1555     libfontconfig
1556     libfreetype
1557     libfribidi
1558     libgme
1559     libgsm
1560     libiec61883
1561     libilbc
1562     libkvazaar
1563     libmodplug
1564     libmp3lame
1565     libnut
1566     libopencv
1567     libopenh264
1568     libopenjpeg
1569     libopenmpt
1570     libopus
1571     libpulse
1572     librtmp
1573     libschroedinger
1574     libshine
1575     libsmbclient
1576     libsnappy
1577     libsoxr
1578     libspeex
1579     libssh
1580     libtesseract
1581     libtheora
1582     libtwolame
1583     libv4l2
1584     libvorbis
1585     libvpx
1586     libwavpack
1587     libwebp
1588     libzimg
1589     libzmq
1590     libzvbi
1591     mediacodec
1592     netcdf
1593     openal
1594     opencl
1595     opengl
1596     videotoolbox
1597 "
1598 HWACCEL_AUTODETECT_LIBRARY_LIST="
1599     audiotoolbox
1600     cuda
1601     cuvid
1602     d3d11va
1603     dxva2
1604     nvenc
1605     vaapi
1606     vda
1607     vdpau
1608     videotoolbox_hwaccel
1609     xvmc
1610 "
1611
1612 HWACCEL_LIBRARY_NONFREE_LIST="
1613     libnpp
1614 "
1615
1616 HWACCEL_LIBRARY_LIST="
1617     $HWACCEL_AUTODETECT_LIBRARY_LIST
1618     $HWACCEL_LIBRARY_NONFREE_LIST
1619     libmfx
1620     mmal
1621     omx
1622 "
1623
1624 DOCUMENT_LIST="
1625     doc
1626     htmlpages
1627     manpages
1628     podpages
1629     txtpages
1630 "
1631
1632 FEATURE_LIST="
1633     ftrapv
1634     gray
1635     hardcoded_tables
1636     omx_rpi
1637     runtime_cpudetect
1638     safe_bitstream_reader
1639     shared
1640     small
1641     static
1642     swscale_alpha
1643 "
1644
1645 LIBRARY_LIST="
1646     avcodec
1647     avdevice
1648     avfilter
1649     avformat
1650     avresample
1651     avutil
1652     postproc
1653     swresample
1654     swscale
1655 "
1656
1657 LICENSE_LIST="
1658     gpl
1659     nonfree
1660     version3
1661 "
1662
1663 PROGRAM_LIST="
1664     ffplay
1665     ffprobe
1666     ffserver
1667     ffmpeg
1668 "
1669
1670 SUBSYSTEM_LIST="
1671     dct
1672     dwt
1673     error_resilience
1674     faan
1675     fast_unaligned
1676     fft
1677     lsp
1678     lzo
1679     mdct
1680     pixelutils
1681     network
1682     rdft
1683 "
1684
1685 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1686 CONFIG_LIST="
1687     $DOCUMENT_LIST
1688     $EXAMPLE_LIST
1689     $EXTERNAL_LIBRARY_LIST
1690     $HWACCEL_LIBRARY_LIST
1691     $FEATURE_LIST
1692     $LICENSE_LIST
1693     $LIBRARY_LIST
1694     $PROGRAM_LIST
1695     $SUBSYSTEM_LIST
1696     fontconfig
1697     memory_poisoning
1698     neon_clobber_test
1699     pic
1700     raise_major
1701     thumb
1702     valgrind_backtrace
1703     xmm_clobber_test
1704     $COMPONENT_LIST
1705 "
1706
1707 THREADS_LIST="
1708     pthreads
1709     os2threads
1710     w32threads
1711 "
1712
1713 ATOMICS_LIST="
1714     atomics_gcc
1715     atomics_suncc
1716     atomics_win32
1717 "
1718
1719 AUTODETECT_LIBS="
1720     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1721     $HWACCEL_AUTODETECT_LIBRARY_LIST
1722     $THREADS_LIST
1723 "
1724
1725 ARCH_LIST="
1726     aarch64
1727     alpha
1728     arm
1729     avr32
1730     avr32_ap
1731     avr32_uc
1732     bfin
1733     ia64
1734     m68k
1735     mips
1736     mips64
1737     parisc
1738     ppc
1739     ppc64
1740     s390
1741     sh4
1742     sparc
1743     sparc64
1744     tilegx
1745     tilepro
1746     tomi
1747     x86
1748     x86_32
1749     x86_64
1750 "
1751
1752 ARCH_EXT_LIST_ARM="
1753     armv5te
1754     armv6
1755     armv6t2
1756     armv8
1757     neon
1758     vfp
1759     vfpv3
1760     setend
1761 "
1762
1763 ARCH_EXT_LIST_MIPS="
1764     mipsfpu
1765     mips32r2
1766     mips32r5
1767     mips64r2
1768     mips32r6
1769     mips64r6
1770     mipsdsp
1771     mipsdspr2
1772     msa
1773 "
1774
1775 ARCH_EXT_LIST_LOONGSON="
1776     loongson2
1777     loongson3
1778     mmi
1779 "
1780
1781 ARCH_EXT_LIST_X86_SIMD="
1782     aesni
1783     amd3dnow
1784     amd3dnowext
1785     avx
1786     avx2
1787     fma3
1788     fma4
1789     mmx
1790     mmxext
1791     sse
1792     sse2
1793     sse3
1794     sse4
1795     sse42
1796     ssse3
1797     xop
1798 "
1799
1800 ARCH_EXT_LIST_PPC="
1801     altivec
1802     dcbzl
1803     ldbrx
1804     power8
1805     ppc4xx
1806     vsx
1807 "
1808
1809 ARCH_EXT_LIST_X86="
1810     $ARCH_EXT_LIST_X86_SIMD
1811     cpunop
1812     i686
1813 "
1814
1815 ARCH_EXT_LIST="
1816     $ARCH_EXT_LIST_ARM
1817     $ARCH_EXT_LIST_PPC
1818     $ARCH_EXT_LIST_X86
1819     $ARCH_EXT_LIST_MIPS
1820     $ARCH_EXT_LIST_LOONGSON
1821 "
1822
1823 ARCH_FEATURES="
1824     aligned_stack
1825     fast_64bit
1826     fast_clz
1827     fast_cmov
1828     local_aligned_8
1829     local_aligned_16
1830     local_aligned_32
1831     simd_align_16
1832     simd_align_32
1833 "
1834
1835 BUILTIN_LIST="
1836     atomic_cas_ptr
1837     machine_rw_barrier
1838     MemoryBarrier
1839     mm_empty
1840     rdtsc
1841     sarestart
1842     sem_timedwait
1843     sync_val_compare_and_swap
1844 "
1845 HAVE_LIST_CMDLINE="
1846     inline_asm
1847     symver
1848     yasm
1849 "
1850
1851 HAVE_LIST_PUB="
1852     bigendian
1853     fast_unaligned
1854 "
1855
1856 HEADERS_LIST="
1857     alsa_asoundlib_h
1858     altivec_h
1859     arpa_inet_h
1860     asm_types_h
1861     cdio_paranoia_h
1862     cdio_paranoia_paranoia_h
1863     cuda_h
1864     dispatch_dispatch_h
1865     dev_bktr_ioctl_bt848_h
1866     dev_bktr_ioctl_meteor_h
1867     dev_ic_bt8xx_h
1868     dev_video_bktr_ioctl_bt848_h
1869     dev_video_meteor_ioctl_meteor_h
1870     direct_h
1871     dirent_h
1872     dlfcn_h
1873     d3d11_h
1874     dxva_h
1875     ES2_gl_h
1876     gsm_h
1877     io_h
1878     mach_mach_time_h
1879     machine_ioctl_bt848_h
1880     machine_ioctl_meteor_h
1881     malloc_h
1882     opencv2_core_core_c_h
1883     openjpeg_2_1_openjpeg_h
1884     openjpeg_2_0_openjpeg_h
1885     openjpeg_1_5_openjpeg_h
1886     OpenGL_gl3_h
1887     poll_h
1888     sndio_h
1889     soundcard_h
1890     stdatomic_h
1891     sys_mman_h
1892     sys_param_h
1893     sys_resource_h
1894     sys_select_h
1895     sys_soundcard_h
1896     sys_time_h
1897     sys_un_h
1898     sys_videoio_h
1899     termios_h
1900     udplite_h
1901     unistd_h
1902     valgrind_valgrind_h
1903     windows_h
1904     winsock2_h
1905 "
1906
1907 INTRINSICS_LIST="
1908     intrinsics_neon
1909 "
1910
1911 COMPLEX_FUNCS="
1912     cabs
1913     cexp
1914 "
1915
1916 MATH_FUNCS="
1917     atanf
1918     atan2f
1919     cbrt
1920     cbrtf
1921     copysign
1922     cosf
1923     erf
1924     exp2
1925     exp2f
1926     expf
1927     hypot
1928     isfinite
1929     isinf
1930     isnan
1931     ldexpf
1932     llrint
1933     llrintf
1934     log2
1935     log2f
1936     log10f
1937     lrint
1938     lrintf
1939     powf
1940     rint
1941     round
1942     roundf
1943     sinf
1944     trunc
1945     truncf
1946 "
1947
1948 SYSTEM_FUNCS="
1949     access
1950     aligned_malloc
1951     arc4random
1952     clock_gettime
1953     closesocket
1954     CommandLineToArgvW
1955     CoTaskMemFree
1956     CryptGenRandom
1957     dlopen
1958     fcntl
1959     flt_lim
1960     fork
1961     getaddrinfo
1962     gethrtime
1963     getopt
1964     GetProcessAffinityMask
1965     GetProcessMemoryInfo
1966     GetProcessTimes
1967     getrusage
1968     GetSystemTimeAsFileTime
1969     gettimeofday
1970     glob
1971     glXGetProcAddress
1972     gmtime_r
1973     inet_aton
1974     isatty
1975     jack_port_get_latency_range
1976     kbhit
1977     LoadLibrary
1978     localtime_r
1979     lstat
1980     lzo1x_999_compress
1981     mach_absolute_time
1982     MapViewOfFile
1983     memalign
1984     mkstemp
1985     mmap
1986     mprotect
1987     nanosleep
1988     PeekNamedPipe
1989     posix_memalign
1990     pthread_cancel
1991     sched_getaffinity
1992     SetConsoleTextAttribute
1993     SetConsoleCtrlHandler
1994     setmode
1995     setrlimit
1996     Sleep
1997     strerror_r
1998     sysconf
1999     sysctl
2000     usleep
2001     UTGetOSTypeFromString
2002     VirtualAlloc
2003     wglGetProcAddress
2004 "
2005
2006 TOOLCHAIN_FEATURES="
2007     as_dn_directive
2008     as_fpu_directive
2009     as_func
2010     as_object_arch
2011     asm_mod_q
2012     attribute_may_alias
2013     attribute_packed
2014     ebp_available
2015     ebx_available
2016     gnu_as
2017     gnu_windres
2018     ibm_asm
2019     inline_asm_direct_symbol_refs
2020     inline_asm_labels
2021     inline_asm_nonlocal_labels
2022     pragma_deprecated
2023     rsync_contimeout
2024     symver_asm_label
2025     symver_gnu_asm
2026     vfp_args
2027     xform_asm
2028     xmm_clobbers
2029 "
2030
2031 TYPES_LIST="
2032     CONDITION_VARIABLE_Ptr
2033     socklen_t
2034     struct_addrinfo
2035     struct_group_source_req
2036     struct_ip_mreq_source
2037     struct_ipv6_mreq
2038     struct_msghdr_msg_flags
2039     struct_pollfd
2040     struct_rusage_ru_maxrss
2041     struct_sctp_event_subscribe
2042     struct_sockaddr_in6
2043     struct_sockaddr_sa_len
2044     struct_sockaddr_storage
2045     struct_stat_st_mtim_tv_nsec
2046     struct_v4l2_frmivalenum_discrete
2047 "
2048
2049 HAVE_LIST="
2050     $ARCH_EXT_LIST
2051     $(add_suffix _external $ARCH_EXT_LIST)
2052     $(add_suffix _inline   $ARCH_EXT_LIST)
2053     $ARCH_FEATURES
2054     $ATOMICS_LIST
2055     $BUILTIN_LIST
2056     $COMPLEX_FUNCS
2057     $HAVE_LIST_CMDLINE
2058     $HAVE_LIST_PUB
2059     $HEADERS_LIST
2060     $INTRINSICS_LIST
2061     $MATH_FUNCS
2062     $SYSTEM_FUNCS
2063     $THREADS_LIST
2064     $TOOLCHAIN_FEATURES
2065     $TYPES_LIST
2066     alsa
2067     atomics_native
2068     dos_paths
2069     dxva2_lib
2070     dxva2api_cobj
2071     jack
2072     libc_msvcrt
2073     makeinfo
2074     makeinfo_html
2075     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2076     perl
2077     pod2man
2078     sdl2
2079     section_data_rel_ro
2080     sndio
2081     texi2html
2082     threads
2083     vaapi_drm
2084     vaapi_x11
2085     vdpau_x11
2086     winrt
2087 "
2088
2089 # options emitted with CONFIG_ prefix but not available on the command line
2090 CONFIG_EXTRA="
2091     aandcttables
2092     ac3dsp
2093     audio_frame_queue
2094     audiodsp
2095     blockdsp
2096     bswapdsp
2097     cabac
2098     dirac_parse
2099     dvprofile
2100     exif
2101     faandct
2102     faanidct
2103     fdctdsp
2104     flacdsp
2105     fmtconvert
2106     frame_thread_encoder
2107     g722dsp
2108     golomb
2109     gplv3
2110     h263dsp
2111     h264chroma
2112     h264dsp
2113     h264parse
2114     h264pred
2115     h264qpel
2116     hevcparse
2117     hpeldsp
2118     huffman
2119     huffyuvdsp
2120     huffyuvencdsp
2121     idctdsp
2122     iirfilter
2123     mdct15
2124     intrax8
2125     iso_media
2126     ividsp
2127     jpegtables
2128     lgplv3
2129     libx262
2130     llauddsp
2131     llviddsp
2132     llvidencdsp
2133     lpc
2134     lzf
2135     me_cmp
2136     mpeg_er
2137     mpegaudio
2138     mpegaudiodsp
2139     mpegaudioheader
2140     mpegvideo
2141     mpegvideoenc
2142     mss34dsp
2143     pixblockdsp
2144     qpeldsp
2145     qsv
2146     qsvdec
2147     qsvenc
2148     rangecoder
2149     riffdec
2150     riffenc
2151     rtpdec
2152     rtpenc_chain
2153     rv34dsp
2154     sinewin
2155     snappy
2156     srtp
2157     startcode
2158     texturedsp
2159     texturedspenc
2160     tpeldsp
2161     vaapi_encode
2162     vc1dsp
2163     videodsp
2164     vp3dsp
2165     vp56dsp
2166     vp8dsp
2167     vt_bt2020
2168     wma_freqs
2169     wmv2dsp
2170 "
2171
2172 CMDLINE_SELECT="
2173     $ARCH_EXT_LIST
2174     $CONFIG_LIST
2175     $HAVE_LIST_CMDLINE
2176     $THREADS_LIST
2177     asm
2178     cross_compile
2179     debug
2180     extra_warnings
2181     logging
2182     lto
2183     optimizations
2184     rpath
2185     stripping
2186 "
2187
2188 PATHS_LIST="
2189     bindir
2190     datadir
2191     docdir
2192     incdir
2193     libdir
2194     mandir
2195     pkgconfigdir
2196     prefix
2197     shlibdir
2198     install_name_dir
2199 "
2200
2201 CMDLINE_SET="
2202     $PATHS_LIST
2203     ar
2204     arch
2205     as
2206     assert_level
2207     build_suffix
2208     cc
2209     objcc
2210     cpu
2211     cross_prefix
2212     custom_allocator
2213     cxx
2214     dep_cc
2215     doxygen
2216     env
2217     extra_version
2218     gas
2219     host_cc
2220     host_cflags
2221     host_extralibs
2222     host_ld
2223     host_ldflags
2224     host_os
2225     install
2226     ld
2227     ln_s
2228     logfile
2229     malloc_prefix
2230     nm
2231     optflags
2232     pkg_config
2233     pkg_config_flags
2234     progs_suffix
2235     random_seed
2236     ranlib
2237     samples
2238     strip
2239     sws_max_filter_size
2240     sysinclude
2241     sysroot
2242     target_exec
2243     target_os
2244     target_path
2245     target_samples
2246     tempprefix
2247     toolchain
2248     valgrind
2249     yasmexe
2250 "
2251
2252 CMDLINE_APPEND="
2253     extra_cflags
2254     extra_cxxflags
2255     extra_objcflags
2256     host_cppflags
2257 "
2258
2259 # code dependency declarations
2260
2261 # architecture extensions
2262
2263 armv5te_deps="arm"
2264 armv6_deps="arm"
2265 armv6t2_deps="arm"
2266 armv8_deps="aarch64"
2267 neon_deps_any="aarch64 arm"
2268 intrinsics_neon_deps="neon"
2269 vfp_deps_any="aarch64 arm"
2270 vfpv3_deps="vfp"
2271 setend_deps="arm"
2272
2273 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2274
2275 loongson2_deps="mips"
2276 loongson3_deps="mips"
2277 mipsfpu_deps="mips"
2278 mipsdsp_deps="mips"
2279 mipsdspr2_deps="mips"
2280 mips32r2_deps="mips"
2281 mips32r5_deps="mips"
2282 mips32r6_deps="mips"
2283 mips64r2_deps="mips"
2284 mips64r6_deps="mips"
2285 msa_deps="mipsfpu"
2286 mmi_deps="mips"
2287
2288 altivec_deps="ppc"
2289 dcbzl_deps="ppc"
2290 ldbrx_deps="ppc"
2291 ppc4xx_deps="ppc"
2292 vsx_deps="altivec"
2293 power8_deps="vsx"
2294
2295 cpunop_deps="i686"
2296 x86_64_select="i686"
2297 x86_64_suggest="fast_cmov"
2298
2299 amd3dnow_deps="mmx"
2300 amd3dnowext_deps="amd3dnow"
2301 i686_deps="x86"
2302 mmx_deps="x86"
2303 mmxext_deps="mmx"
2304 sse_deps="mmxext"
2305 sse2_deps="sse"
2306 sse3_deps="sse2"
2307 ssse3_deps="sse3"
2308 sse4_deps="ssse3"
2309 sse42_deps="sse4"
2310 aesni_deps="sse42"
2311 avx_deps="sse42"
2312 xop_deps="avx"
2313 fma3_deps="avx"
2314 fma4_deps="avx"
2315 avx2_deps="avx"
2316
2317 mmx_external_deps="yasm"
2318 mmx_inline_deps="inline_asm"
2319 mmx_suggest="mmx_external mmx_inline"
2320
2321 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2322     eval dep=\$${ext}_deps
2323     eval ${ext}_external_deps='"${dep}_external"'
2324     eval ${ext}_inline_deps='"${dep}_inline"'
2325     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2326 done
2327
2328 aligned_stack_if_any="aarch64 ppc x86"
2329 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2330 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2331 fast_unaligned_if_any="aarch64 ppc x86"
2332 simd_align_16_if_any="altivec neon sse"
2333 simd_align_32_if_any="avx"
2334
2335 # system capabilities
2336 symver_if_any="symver_asm_label symver_gnu_asm"
2337 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
2338
2339 # threading support
2340 atomics_gcc_if="sync_val_compare_and_swap"
2341 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2342 atomics_win32_if="MemoryBarrier"
2343 atomics_native_if_any="$ATOMICS_LIST"
2344 w32threads_deps="atomics_native"
2345 threads_if_any="$THREADS_LIST"
2346
2347 # subsystems
2348 dct_select="rdft"
2349 dirac_parse_select="golomb"
2350 error_resilience_select="me_cmp"
2351 faandct_deps="faan fdctdsp"
2352 faanidct_deps="faan idctdsp"
2353 h264dsp_select="startcode"
2354 hevcparse_select="golomb"
2355 frame_thread_encoder_deps="encoders threads"
2356 intrax8_select="blockdsp idctdsp"
2357 mdct_select="fft"
2358 mdct15_select="fft"
2359 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2360 mpeg_er_select="error_resilience"
2361 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2362 mpegaudiodsp_select="dct"
2363 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2364 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2365 vc1dsp_select="h264chroma qpeldsp startcode"
2366 rdft_select="fft"
2367
2368 # decoders / encoders
2369 aac_decoder_select="mdct15 mdct sinewin"
2370 aac_fixed_decoder_select="mdct sinewin"
2371 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2372 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2373 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2374 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2375 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2376 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2377 adpcm_g722_decoder_select="g722dsp"
2378 adpcm_g722_encoder_select="g722dsp"
2379 aic_decoder_select="golomb idctdsp"
2380 alac_encoder_select="lpc"
2381 als_decoder_select="bswapdsp"
2382 amrnb_decoder_select="lsp"
2383 amrwb_decoder_select="lsp"
2384 amv_decoder_select="sp5x_decoder exif"
2385 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2386 ape_decoder_select="bswapdsp llauddsp"
2387 apng_decoder_select="zlib"
2388 apng_encoder_select="llvidencdsp zlib"
2389 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2390 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2391 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2392 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2393 atrac1_decoder_select="mdct sinewin"
2394 atrac3_decoder_select="mdct"
2395 atrac3p_decoder_select="mdct sinewin"
2396 avrn_decoder_select="exif jpegtables"
2397 bink_decoder_select="blockdsp hpeldsp"
2398 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2399 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2400 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2401 cllc_decoder_select="bswapdsp"
2402 comfortnoise_encoder_select="lpc"
2403 cook_decoder_select="audiodsp mdct sinewin"
2404 cscd_decoder_select="lzo"
2405 cscd_decoder_suggest="zlib"
2406 dca_decoder_select="mdct"
2407 dds_decoder_select="texturedsp"
2408 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2409 dnxhd_decoder_select="blockdsp idctdsp"
2410 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2411 dvvideo_decoder_select="dvprofile idctdsp"
2412 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2413 dxa_decoder_select="zlib"
2414 dxv_decoder_select="lzf texturedsp"
2415 eac3_decoder_select="ac3_decoder"
2416 eac3_encoder_select="ac3_encoder"
2417 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2418 eatgq_decoder_select="aandcttables"
2419 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2420 exr_decoder_select="zlib"
2421 ffv1_decoder_select="rangecoder"
2422 ffv1_encoder_select="rangecoder"
2423 ffvhuff_decoder_select="huffyuv_decoder"
2424 ffvhuff_encoder_select="huffyuv_encoder"
2425 fic_decoder_select="golomb"
2426 flac_decoder_select="flacdsp"
2427 flac_encoder_select="bswapdsp flacdsp lpc"
2428 flashsv2_decoder_select="zlib"
2429 flashsv2_encoder_select="zlib"
2430 flashsv_decoder_select="zlib"
2431 flashsv_encoder_select="zlib"
2432 flv_decoder_select="h263_decoder"
2433 flv_encoder_select="h263_encoder"
2434 fourxm_decoder_select="blockdsp bswapdsp"
2435 fraps_decoder_select="bswapdsp huffman"
2436 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2437 g729_decoder_select="audiodsp"
2438 h261_decoder_select="mpegvideo"
2439 h261_encoder_select="aandcttables mpegvideoenc"
2440 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2441 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2442 h263i_decoder_select="h263_decoder"
2443 h263p_decoder_select="h263_decoder"
2444 h263p_encoder_select="h263_encoder"
2445 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2446 h264_decoder_suggest="error_resilience"
2447 hap_decoder_select="snappy texturedsp"
2448 hap_encoder_deps="libsnappy"
2449 hap_encoder_select="texturedspenc"
2450 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2451 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2452 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2453 iac_decoder_select="imc_decoder"
2454 imc_decoder_select="bswapdsp fft mdct sinewin"
2455 indeo3_decoder_select="hpeldsp"
2456 indeo4_decoder_select="ividsp"
2457 indeo5_decoder_select="ividsp"
2458 interplay_video_decoder_select="hpeldsp"
2459 jpegls_decoder_select="mjpeg_decoder"
2460 jv_decoder_select="blockdsp"
2461 lagarith_decoder_select="llviddsp"
2462 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2463 magicyuv_decoder_select="llviddsp"
2464 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2465 metasound_decoder_select="lsp mdct sinewin"
2466 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2467 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2468 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2469 mjpegb_decoder_select="mjpeg_decoder"
2470 mlp_decoder_select="mlp_parser"
2471 motionpixels_decoder_select="bswapdsp"
2472 mp1_decoder_select="mpegaudio"
2473 mp1float_decoder_select="mpegaudio"
2474 mp2_decoder_select="mpegaudio"
2475 mp2float_decoder_select="mpegaudio"
2476 mp3_decoder_select="mpegaudio"
2477 mp3adu_decoder_select="mpegaudio"
2478 mp3adufloat_decoder_select="mpegaudio"
2479 mp3float_decoder_select="mpegaudio"
2480 mp3on4_decoder_select="mpegaudio"
2481 mp3on4float_decoder_select="mpegaudio"
2482 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2483 mpc8_decoder_select="mpegaudiodsp"
2484 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2485 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2486 mpegvideo_decoder_select="mpegvideo"
2487 mpeg1video_decoder_select="mpegvideo"
2488 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2489 mpeg2video_decoder_select="mpegvideo"
2490 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2491 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2492 mpeg4_encoder_select="h263_encoder"
2493 msa1_decoder_select="mss34dsp"
2494 msmpeg4v1_decoder_select="h263_decoder"
2495 msmpeg4v2_decoder_select="h263_decoder"
2496 msmpeg4v2_encoder_select="h263_encoder"
2497 msmpeg4v3_decoder_select="h263_decoder"
2498 msmpeg4v3_encoder_select="h263_encoder"
2499 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2500 mts2_decoder_select="mss34dsp"
2501 mxpeg_decoder_select="mjpeg_decoder"
2502 nellymoser_decoder_select="mdct sinewin"
2503 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2504 nuv_decoder_select="idctdsp lzo"
2505 on2avc_decoder_select="mdct"
2506 opus_decoder_deps="swresample"
2507 opus_decoder_select="mdct15"
2508 opus_encoder_select="audio_frame_queue mdct15"
2509 png_decoder_select="zlib"
2510 png_encoder_select="llvidencdsp zlib"
2511 prores_decoder_select="blockdsp idctdsp"
2512 prores_encoder_select="fdctdsp"
2513 qcelp_decoder_select="lsp"
2514 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2515 ra_144_decoder_select="audiodsp"
2516 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2517 ralf_decoder_select="golomb"
2518 rawvideo_decoder_select="bswapdsp"
2519 rscc_decoder_select="zlib"
2520 rtjpeg_decoder_select="me_cmp"
2521 rv10_decoder_select="h263_decoder"
2522 rv10_encoder_select="h263_encoder"
2523 rv20_decoder_select="h263_decoder"
2524 rv20_encoder_select="h263_encoder"
2525 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2526 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2527 screenpresso_decoder_select="zlib"
2528 shorten_decoder_select="bswapdsp"
2529 sipr_decoder_select="lsp"
2530 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2531 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2532 sonic_decoder_select="golomb rangecoder"
2533 sonic_encoder_select="golomb rangecoder"
2534 sonic_ls_encoder_select="golomb rangecoder"
2535 sp5x_decoder_select="mjpeg_decoder"
2536 svq1_decoder_select="hpeldsp"
2537 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2538 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2539 svq3_decoder_suggest="zlib"
2540 tak_decoder_select="audiodsp"
2541 tdsc_decoder_select="zlib mjpeg_decoder"
2542 theora_decoder_select="vp3_decoder"
2543 thp_decoder_select="mjpeg_decoder"
2544 tiff_decoder_suggest="zlib lzma"
2545 tiff_encoder_suggest="zlib"
2546 truehd_decoder_select="mlp_parser"
2547 truemotion2_decoder_select="bswapdsp"
2548 truespeech_decoder_select="bswapdsp"
2549 tscc_decoder_select="zlib"
2550 twinvq_decoder_select="mdct lsp sinewin"
2551 txd_decoder_select="texturedsp"
2552 utvideo_decoder_select="bswapdsp llviddsp"
2553 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2554 vble_decoder_select="llviddsp"
2555 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2556 vc1_qsv_decoder_deps="libmfx"
2557 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2558 vc1image_decoder_select="vc1_decoder"
2559 vorbis_decoder_select="mdct"
2560 vorbis_encoder_select="mdct"
2561 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2562 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2563 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2564 vp6a_decoder_select="vp6_decoder"
2565 vp6f_decoder_select="vp6_decoder"
2566 vp7_decoder_select="h264pred videodsp vp8dsp"
2567 vp8_decoder_select="h264pred videodsp vp8dsp"
2568 vp9_decoder_select="videodsp vp9_parser"
2569 webp_decoder_select="vp8_decoder exif"
2570 wmalossless_decoder_select="llauddsp"
2571 wmapro_decoder_select="mdct sinewin wma_freqs"
2572 wmav1_decoder_select="mdct sinewin wma_freqs"
2573 wmav1_encoder_select="mdct sinewin wma_freqs"
2574 wmav2_decoder_select="mdct sinewin wma_freqs"
2575 wmav2_encoder_select="mdct sinewin wma_freqs"
2576 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2577 wmv1_decoder_select="h263_decoder"
2578 wmv1_encoder_select="h263_encoder"
2579 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2580 wmv2_encoder_select="h263_encoder wmv2dsp"
2581 wmv3_decoder_select="vc1_decoder"
2582 wmv3image_decoder_select="wmv3_decoder"
2583 xma1_decoder_select="wmapro_decoder"
2584 xma2_decoder_select="wmapro_decoder"
2585 zerocodec_decoder_select="zlib"
2586 zlib_decoder_select="zlib"
2587 zlib_encoder_select="zlib"
2588 zmbv_decoder_select="zlib"
2589 zmbv_encoder_select="zlib"
2590
2591 # platform codecs
2592 audiotoolbox_deps="AudioToolbox_AudioToolbox_h"
2593 audiotoolbox_extralibs="-framework CoreFoundation -framework AudioToolbox -framework CoreMedia"
2594
2595 # hardware accelerators
2596 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2597 cuda_deps_any="dlopen LoadLibrary"
2598 cuvid_deps="cuda"
2599 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2600 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2601 dxva2_extralibs="-luser32"
2602 vda_framework_deps="VideoDecodeAcceleration_VDADecoder_h"
2603 vda_framework_extralibs="-framework VideoDecodeAcceleration"
2604 vda_deps="vda_framework pthreads"
2605 vda_extralibs="-framework CoreFoundation -framework QuartzCore"
2606 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2607 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2608 xvmc_deps="X11_extensions_XvMClib_h"
2609
2610 h263_vaapi_hwaccel_deps="vaapi"
2611 h263_vaapi_hwaccel_select="h263_decoder"
2612 h263_videotoolbox_hwaccel_deps="videotoolbox"
2613 h263_videotoolbox_hwaccel_select="h263_decoder"
2614 h264_cuvid_hwaccel_deps="cuda cuvid"
2615 h264_cuvid_hwaccel_select="h264_cuvid_decoder"
2616 h264_d3d11va_hwaccel_deps="d3d11va"
2617 h264_d3d11va_hwaccel_select="h264_decoder"
2618 h264_dxva2_hwaccel_deps="dxva2"
2619 h264_dxva2_hwaccel_select="h264_decoder"
2620 h264_mediacodec_hwaccel_deps="mediacodec"
2621 h264_mmal_hwaccel_deps="mmal"
2622 h264_qsv_hwaccel_deps="libmfx"
2623 h264_vaapi_hwaccel_deps="vaapi"
2624 h264_vaapi_hwaccel_select="h264_decoder"
2625 h264_vda_hwaccel_deps="vda"
2626 h264_vda_hwaccel_select="h264_decoder"
2627 h264_vda_old_hwaccel_deps="vda"
2628 h264_vda_old_hwaccel_select="h264_decoder"
2629 h264_vdpau_hwaccel_deps="vdpau"
2630 h264_vdpau_hwaccel_select="h264_decoder"
2631 h264_videotoolbox_hwaccel_deps="videotoolbox"
2632 h264_videotoolbox_hwaccel_select="h264_decoder"
2633 hevc_cuvid_hwaccel_deps="cuda cuvid"
2634 hevc_cuvid_hwaccel_select="hevc_cuvid_decoder"
2635 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2636 hevc_d3d11va_hwaccel_select="hevc_decoder"
2637 hevc_mediacodec_hwaccel_deps="mediacodec"
2638 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2639 hevc_dxva2_hwaccel_select="hevc_decoder"
2640 hevc_qsv_hwaccel_deps="libmfx"
2641 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2642 hevc_vaapi_hwaccel_select="hevc_decoder"
2643 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2644 hevc_vdpau_hwaccel_select="hevc_decoder"
2645 mjpeg_cuvid_hwaccel_deps="cuda cuvid"
2646 mjpeg_cuvid_hwaccel_select="mjpeg_cuvid_decoder"
2647 mpeg_xvmc_hwaccel_deps="xvmc"
2648 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2649 mpeg1_cuvid_hwaccel_deps="cuda cuvid"
2650 mpeg1_cuvid_hwaccel_select="mpeg1_cuvid_decoder"
2651 mpeg1_vdpau_hwaccel_deps="vdpau"
2652 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2653 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2654 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2655 mpeg1_xvmc_hwaccel_deps="xvmc"
2656 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2657 mpeg2_cuvid_hwaccel_deps="cuda cuvid"
2658 mpeg2_cuvid_hwaccel_select="mpeg2_cuvid_decoder"
2659 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2660 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2661 mpeg2_dxva2_hwaccel_deps="dxva2"
2662 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2663 mpeg2_mmal_hwaccel_deps="mmal"
2664 mpeg2_qsv_hwaccel_deps="libmfx"
2665 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2666 mpeg2_vaapi_hwaccel_deps="vaapi"
2667 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2668 mpeg2_vdpau_hwaccel_deps="vdpau"
2669 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2670 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2671 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2672 mpeg2_xvmc_hwaccel_deps="xvmc"
2673 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2674 mpeg4_cuvid_hwaccel_deps="cuda cuvid"
2675 mpeg4_cuvid_hwaccel_select="mpeg4_cuvid_decoder"
2676 mpeg4_mediacodec_hwaccel_deps="mediacodec"
2677 mpeg4_mmal_hwaccel_deps="mmal"
2678 mpeg4_vaapi_hwaccel_deps="vaapi"
2679 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2680 mpeg4_vdpau_hwaccel_deps="vdpau"
2681 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2682 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2683 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2684 vc1_cuvid_hwaccel_deps="cuda cuvid"
2685 vc1_cuvid_hwaccel_select="vc1_cuvid_decoder"
2686 vc1_d3d11va_hwaccel_deps="d3d11va"
2687 vc1_d3d11va_hwaccel_select="vc1_decoder"
2688 vc1_dxva2_hwaccel_deps="dxva2"
2689 vc1_dxva2_hwaccel_select="vc1_decoder"
2690 vc1_mmal_hwaccel_deps="mmal"
2691 vc1_qsv_hwaccel_deps="libmfx"
2692 vc1_qsv_hwaccel_select="qsvdec_vc1"
2693 vc1_vaapi_hwaccel_deps="vaapi"
2694 vc1_vaapi_hwaccel_select="vc1_decoder"
2695 vc1_vdpau_hwaccel_deps="vdpau"
2696 vc1_vdpau_hwaccel_select="vc1_decoder"
2697 vp8_cuvid_hwaccel_deps="cuda cuvid"
2698 vp8_cuvid_hwaccel_select="vp8_cuvid_decoder"
2699 vp9_cuvid_hwaccel_deps="cuda cuvid"
2700 vp9_cuvid_hwaccel_select="vp9_cuvid_decoder"
2701 vp8_mediacodec_hwaccel_deps="mediacodec"
2702 vp8_qsv_hwaccel_deps="libmfx"
2703 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2704 vp9_d3d11va_hwaccel_select="vp9_decoder"
2705 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2706 vp9_dxva2_hwaccel_select="vp9_decoder"
2707 vp9_mediacodec_hwaccel_deps="mediacodec"
2708 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2709 vp9_vaapi_hwaccel_select="vp9_decoder"
2710 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2711 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2712 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2713 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2714
2715 # hardware-accelerated codecs
2716 omx_deps="dlopen pthreads"
2717 omx_extralibs='$ldl'
2718 omx_rpi_select="omx"
2719 qsvdec_select="qsv"
2720 qsvenc_select="qsv"
2721 vaapi_encode_deps="vaapi"
2722
2723 hwupload_cuda_filter_deps="cuda"
2724 scale_npp_filter_deps="cuda libnpp"
2725
2726 nvenc_deps="cuda"
2727 nvenc_deps_any="dlopen LoadLibrary"
2728 nvenc_encoder_deps="nvenc"
2729
2730 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2731 h264_cuvid_decoder_deps="cuda cuvid"
2732 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2733 h264_mediacodec_decoder_deps="mediacodec"
2734 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2735 h264_mmal_decoder_deps="mmal"
2736 h264_nvenc_encoder_deps="nvenc"
2737 h264_omx_encoder_deps="omx"
2738 h264_qsv_decoder_deps="libmfx"
2739 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2740 h264_qsv_encoder_deps="libmfx"
2741 h264_qsv_encoder_select="qsvenc"
2742 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2743 h264_vaapi_encoder_select="vaapi_encode golomb"
2744 h264_vda_decoder_deps="vda"
2745 h264_vda_decoder_select="h264_decoder"
2746 h264_vdpau_decoder_deps="vdpau"
2747 h264_vdpau_decoder_select="h264_decoder"
2748 hevc_cuvid_decoder_deps="cuda cuvid"
2749 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2750 hevc_mediacodec_decoder_deps="mediacodec"
2751 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2752 hevc_nvenc_encoder_deps="nvenc"
2753 hevc_qsv_decoder_deps="libmfx"
2754 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2755 hevc_qsv_encoder_deps="libmfx"
2756 hevc_qsv_encoder_select="hevcparse qsvenc"
2757 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2758 hevc_vaapi_encoder_select="vaapi_encode golomb"
2759 mjpeg_cuvid_decoder_deps="cuda cuvid"
2760 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2761 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2762 mpeg1_cuvid_decoder_deps="cuda cuvid"
2763 mpeg1_vdpau_decoder_deps="vdpau"
2764 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2765 mpeg2_crystalhd_decoder_select="crystalhd"
2766 mpeg2_cuvid_decoder_deps="cuda cuvid"
2767 mpeg2_mmal_decoder_deps="mmal"
2768 mpeg2_qsv_decoder_deps="libmfx"
2769 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2770 mpeg2_qsv_encoder_deps="libmfx"
2771 mpeg2_qsv_encoder_select="qsvenc"
2772 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2773 mpeg2_vaapi_encoder_select="vaapi_encode"
2774 mpeg4_crystalhd_decoder_select="crystalhd"
2775 mpeg4_cuvid_decoder_deps="cuda cuvid"
2776 mpeg4_mediacodec_decoder_deps="mediacodec"
2777 mpeg4_mmal_decoder_deps="mmal"
2778 mpeg4_omx_encoder_deps="omx"
2779 mpeg4_vdpau_decoder_deps="vdpau"
2780 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2781 mpeg_vdpau_decoder_deps="vdpau"
2782 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2783 msmpeg4_crystalhd_decoder_select="crystalhd"
2784 nvenc_h264_encoder_select="h264_nvenc_encoder"
2785 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2786 vc1_crystalhd_decoder_select="crystalhd"
2787 vc1_cuvid_decoder_deps="cuda cuvid"
2788 vc1_mmal_decoder_deps="mmal"
2789 vc1_vdpau_decoder_deps="vdpau"
2790 vc1_vdpau_decoder_select="vc1_decoder"
2791 vp8_cuvid_decoder_deps="cuda cuvid"
2792 vp8_mediacodec_decoder_deps="mediacodec"
2793 vp8_qsv_decoder_deps="libmfx"
2794 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2795 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2796 vp8_vaapi_encoder_select="vaapi_encode"
2797 vp9_cuvid_decoder_deps="cuda cuvid"
2798 vp9_mediacodec_decoder_deps="mediacodec"
2799 wmv3_crystalhd_decoder_select="crystalhd"
2800 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2801
2802 # parsers
2803 h264_parser_select="golomb h264dsp h264parse"
2804 hevc_parser_select="hevcparse"
2805 mpegaudio_parser_select="mpegaudioheader"
2806 mpegvideo_parser_select="mpegvideo"
2807 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2808 vc1_parser_select="vc1dsp"
2809
2810 # bitstream_filters
2811 mjpeg2jpeg_bsf_select="jpegtables"
2812
2813 # external libraries
2814 aac_at_decoder_deps="audiotoolbox"
2815 ac3_at_decoder_deps="audiotoolbox"
2816 ac3_at_decoder_select="ac3_parser"
2817 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2818 alac_at_decoder_deps="audiotoolbox"
2819 amr_nb_at_decoder_deps="audiotoolbox"
2820 avisynth_deps_any="dlopen LoadLibrary"
2821 avisynth_demuxer_deps="avisynth"
2822 avisynth_demuxer_select="riffdec"
2823 eac3_at_decoder_deps="audiotoolbox"
2824 eac3_at_decoder_select="ac3_parser"
2825 gsm_ms_at_decoder_deps="audiotoolbox"
2826 ilbc_at_decoder_deps="audiotoolbox"
2827 mp1_at_decoder_deps="audiotoolbox"
2828 mp2_at_decoder_deps="audiotoolbox"
2829 mp3_at_decoder_deps="audiotoolbox"
2830 mp1_at_decoder_select="mpegaudioheader"
2831 mp2_at_decoder_select="mpegaudioheader"
2832 mp3_at_decoder_select="mpegaudioheader"
2833 pcm_alaw_at_decoder_deps="audiotoolbox"
2834 pcm_mulaw_at_decoder_deps="audiotoolbox"
2835 qdmc_at_decoder_deps="audiotoolbox"
2836 qdm2_at_decoder_deps="audiotoolbox"
2837 aac_at_encoder_deps="audiotoolbox"
2838 aac_at_encoder_select="audio_frame_queue"
2839 alac_at_encoder_deps="audiotoolbox"
2840 alac_at_encoder_select="audio_frame_queue"
2841 ilbc_at_encoder_deps="audiotoolbox"
2842 ilbc_at_encoder_select="audio_frame_queue"
2843 pcm_alaw_at_encoder_deps="audiotoolbox"
2844 pcm_alaw_at_encoder_select="audio_frame_queue"
2845 pcm_mulaw_at_encoder_deps="audiotoolbox"
2846 pcm_mulaw_at_encoder_select="audio_frame_queue"
2847 chromaprint_muxer_deps="chromaprint"
2848 h264_videotoolbox_encoder_deps="videotoolbox_encoder pthreads"
2849 libcelt_decoder_deps="libcelt"
2850 libfdk_aac_decoder_deps="libfdk_aac"
2851 libfdk_aac_encoder_deps="libfdk_aac"
2852 libfdk_aac_encoder_select="audio_frame_queue"
2853 libgme_demuxer_deps="libgme"
2854 libgsm_decoder_deps="libgsm"
2855 libgsm_encoder_deps="libgsm"
2856 libgsm_ms_decoder_deps="libgsm"
2857 libgsm_ms_encoder_deps="libgsm"
2858 libilbc_decoder_deps="libilbc"
2859 libilbc_encoder_deps="libilbc"
2860 libkvazaar_encoder_deps="libkvazaar"
2861 libmodplug_demuxer_deps="libmodplug"
2862 libmp3lame_encoder_deps="libmp3lame"
2863 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2864 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2865 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2866 libopencore_amrnb_encoder_select="audio_frame_queue"
2867 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2868 libopenh264_decoder_deps="libopenh264"
2869 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2870 libopenh264_encoder_deps="libopenh264"
2871 libopenjpeg_decoder_deps="libopenjpeg"
2872 libopenjpeg_encoder_deps="libopenjpeg"
2873 libopenmpt_demuxer_deps="libopenmpt"
2874 libopus_decoder_deps="libopus"
2875 libopus_encoder_deps="libopus"
2876 libopus_encoder_select="audio_frame_queue"
2877 libschroedinger_decoder_deps="libschroedinger"
2878 libschroedinger_encoder_deps="libschroedinger"
2879 libshine_encoder_deps="libshine"
2880 libshine_encoder_select="audio_frame_queue"
2881 libspeex_decoder_deps="libspeex"
2882 libspeex_encoder_deps="libspeex"
2883 libspeex_encoder_select="audio_frame_queue"
2884 libtheora_encoder_deps="libtheora"
2885 libtwolame_encoder_deps="libtwolame"
2886 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2887 libvorbis_decoder_deps="libvorbis"
2888 libvorbis_encoder_deps="libvorbis"
2889 libvorbis_encoder_select="audio_frame_queue"
2890 libvpx_vp8_decoder_deps="libvpx"
2891 libvpx_vp8_encoder_deps="libvpx"
2892 libvpx_vp9_decoder_deps="libvpx"
2893 libvpx_vp9_encoder_deps="libvpx"
2894 libwavpack_encoder_deps="libwavpack"
2895 libwavpack_encoder_select="audio_frame_queue"
2896 libwebp_encoder_deps="libwebp"
2897 libwebp_anim_encoder_deps="libwebp"
2898 libx262_encoder_deps="libx262"
2899 libx264_encoder_deps="libx264"
2900 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2901 libx264rgb_encoder_select="libx264_encoder"
2902 libx265_encoder_deps="libx265"
2903 libxavs_encoder_deps="libxavs"
2904 libxvid_encoder_deps="libxvid"
2905 libzvbi_teletext_decoder_deps="libzvbi"
2906 videotoolbox_deps="VideoToolbox_VideoToolbox_h"
2907 videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework CoreVideo"
2908 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2909 videotoolbox_encoder_suggest="vda_framework vt_bt2020"
2910 vt_bt2020_deps="kCVImageBufferColorPrimaries_ITU_R_2020"
2911
2912 # demuxers / muxers
2913 ac3_demuxer_select="ac3_parser"
2914 aiff_muxer_select="iso_media"
2915 asf_demuxer_select="riffdec"
2916 asf_o_demuxer_select="riffdec"
2917 asf_muxer_select="riffenc"
2918 asf_stream_muxer_select="asf_muxer"
2919 avi_demuxer_select="iso_media riffdec exif"
2920 avi_muxer_select="riffenc"
2921 caf_demuxer_select="iso_media riffdec"
2922 caf_muxer_select="iso_media"
2923 dash_muxer_select="mp4_muxer"
2924 dirac_demuxer_select="dirac_parser"
2925 dts_demuxer_select="dca_parser"
2926 dtshd_demuxer_select="dca_parser"
2927 dv_demuxer_select="dvprofile"
2928 dv_muxer_select="dvprofile"
2929 dxa_demuxer_select="riffdec"
2930 eac3_demuxer_select="ac3_parser"
2931 f4v_muxer_select="mov_muxer"
2932 fifo_muxer_deps="threads"
2933 flac_demuxer_select="flac_parser"
2934 hds_muxer_select="flv_muxer"
2935 hls_muxer_select="mpegts_muxer"
2936 image2_alias_pix_demuxer_select="image2_demuxer"
2937 image2_brender_pix_demuxer_select="image2_demuxer"
2938 ipod_muxer_select="mov_muxer"
2939 ismv_muxer_select="mov_muxer"
2940 libnut_demuxer_deps="libnut"
2941 libnut_muxer_deps="libnut"
2942 matroska_audio_muxer_select="matroska_muxer"
2943 matroska_demuxer_select="iso_media riffdec"
2944 matroska_demuxer_suggest="bzlib lzo zlib"
2945 matroska_muxer_select="iso_media riffenc"
2946 mmf_muxer_select="riffenc"
2947 mov_demuxer_select="iso_media riffdec"
2948 mov_demuxer_suggest="zlib"
2949 mov_muxer_select="iso_media riffenc rtpenc_chain"
2950 mp3_demuxer_select="mpegaudio_parser"
2951 mp3_muxer_select="mpegaudioheader"
2952 mp4_muxer_select="mov_muxer"
2953 mpegts_demuxer_select="iso_media"
2954 mpegts_muxer_select="adts_muxer latm_muxer"
2955 mpegtsraw_demuxer_select="mpegts_demuxer"
2956 mxf_d10_muxer_select="mxf_muxer"
2957 mxf_opatom_muxer_select="mxf_muxer"
2958 nut_muxer_select="riffenc"
2959 nuv_demuxer_select="riffdec"
2960 oga_muxer_select="ogg_muxer"
2961 ogg_demuxer_select="dirac_parse"
2962 ogv_muxer_select="ogg_muxer"
2963 opus_muxer_select="ogg_muxer"
2964 psp_muxer_select="mov_muxer"
2965 rtp_demuxer_select="sdp_demuxer"
2966 rtp_muxer_select="golomb"
2967 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2968 rtsp_demuxer_select="http_protocol rtpdec"
2969 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2970 sap_demuxer_select="sdp_demuxer"
2971 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2972 sdp_demuxer_select="rtpdec"
2973 smoothstreaming_muxer_select="ismv_muxer"
2974 spdif_muxer_select="aac_parser"
2975 spx_muxer_select="ogg_muxer"
2976 swf_demuxer_suggest="zlib"
2977 tak_demuxer_select="tak_parser"
2978 tg2_muxer_select="mov_muxer"
2979 tgp_muxer_select="mov_muxer"
2980 vobsub_demuxer_select="mpegps_demuxer"
2981 w64_demuxer_select="wav_demuxer"
2982 w64_muxer_select="wav_muxer"
2983 wav_demuxer_select="riffdec"
2984 wav_muxer_select="riffenc"
2985 webm_muxer_select="iso_media riffenc"
2986 webm_dash_manifest_demuxer_select="matroska_demuxer"
2987 wtv_demuxer_select="mpegts_demuxer riffdec"
2988 wtv_muxer_select="mpegts_muxer riffenc"
2989 xmv_demuxer_select="riffdec"
2990 xwma_demuxer_select="riffdec"
2991
2992 # indevs / outdevs
2993 alsa_indev_deps="alsa"
2994 alsa_outdev_deps="alsa"
2995 avfoundation_indev_deps="pthreads"
2996 avfoundation_indev_extralibs="-framework Foundation -framework AVFoundation -framework CoreVideo -framework CoreMedia"
2997 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2998 caca_outdev_deps="libcaca"
2999 decklink_indev_deps="decklink threads"
3000 decklink_indev_extralibs="-lstdc++"
3001 decklink_outdev_deps="decklink threads"
3002 decklink_outdev_extralibs="-lstdc++"
3003 dshow_indev_deps="IBaseFilter"
3004 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3005 dv1394_indev_deps="dv1394"
3006 dv1394_indev_select="dv_demuxer"
3007 fbdev_indev_deps="linux_fb_h"
3008 fbdev_outdev_deps="linux_fb_h"
3009 gdigrab_indev_deps="CreateDIBSection"
3010 gdigrab_indev_extralibs="-lgdi32"
3011 gdigrab_indev_select="bmp_decoder"
3012 iec61883_indev_deps="libiec61883"
3013 jack_indev_deps="jack"
3014 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3015 lavfi_indev_deps="avfilter"
3016 libcdio_indev_deps="libcdio"
3017 libdc1394_indev_deps="libdc1394"
3018 libv4l2_indev_deps="libv4l2"
3019 openal_indev_deps="openal"
3020 opengl_outdev_deps="opengl"
3021 oss_indev_deps_any="soundcard_h sys_soundcard_h"
3022 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
3023 pulse_indev_deps="libpulse"
3024 pulse_outdev_deps="libpulse"
3025 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
3026 qtkit_indev_select="qtkit"
3027 sdl2_outdev_deps="sdl2"
3028 sndio_indev_deps="sndio"
3029 sndio_outdev_deps="sndio"
3030 v4l_indev_deps="linux_videodev_h"
3031 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3032 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3033 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
3034 vfwcap_indev_extralibs="-lavicap32"
3035 xcbgrab_indev_deps="libxcb"
3036 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3037 xv_outdev_extralibs="-lXv -lX11 -lXext"
3038
3039 # protocols
3040 async_protocol_deps="threads"
3041 bluray_protocol_deps="libbluray"
3042 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
3043 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3044 ffrtmpcrypt_protocol_select="tcp_protocol"
3045 ffrtmphttp_protocol_deps="!librtmp_protocol"
3046 ffrtmphttp_protocol_select="http_protocol"
3047 ftp_protocol_select="tcp_protocol"
3048 gopher_protocol_select="network"
3049 http_protocol_select="tcp_protocol"
3050 httpproxy_protocol_select="tcp_protocol"
3051 https_protocol_select="tls_protocol"
3052 icecast_protocol_select="http_protocol"
3053 librtmp_protocol_deps="librtmp"
3054 librtmpe_protocol_deps="librtmp"
3055 librtmps_protocol_deps="librtmp"
3056 librtmpt_protocol_deps="librtmp"
3057 librtmpte_protocol_deps="librtmp"
3058 libsmbclient_protocol_deps="libsmbclient gplv3"
3059 libssh_protocol_deps="libssh"
3060 mmsh_protocol_select="http_protocol"
3061 mmst_protocol_select="network"
3062 rtmp_protocol_deps="!librtmp_protocol"
3063 rtmp_protocol_select="tcp_protocol"
3064 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3065 rtmps_protocol_deps="!librtmp_protocol"
3066 rtmps_protocol_select="tls_protocol"
3067 rtmpt_protocol_select="ffrtmphttp_protocol"
3068 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3069 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3070 rtp_protocol_select="udp_protocol"
3071 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3072 sctp_protocol_select="network"
3073 srtp_protocol_select="rtp_protocol srtp"
3074 tcp_protocol_select="network"
3075 tls_gnutls_protocol_deps="gnutls !tls_schannel_protocol !tls_securetransport_protocol"
3076 tls_gnutls_protocol_select="tcp_protocol"
3077 tls_openssl_protocol_deps="openssl !tls_schannel_protocol !tls_securetransport_protocol !tls_gnutls_protocol"
3078 tls_openssl_protocol_select="tcp_protocol"
3079 tls_schannel_protocol_deps="schannel"
3080 tls_schannel_protocol_select="tcp_protocol"
3081 tls_securetransport_protocol_deps="securetransport"
3082 tls_securetransport_protocol_select="tcp_protocol"
3083 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
3084 udp_protocol_select="network"
3085 udplite_protocol_select="network"
3086 unix_protocol_deps="sys_un_h"
3087 unix_protocol_select="network"
3088
3089 # filters
3090 afftfilt_filter_deps="avcodec"
3091 afftfilt_filter_select="fft"
3092 amovie_filter_deps="avcodec avformat"
3093 aresample_filter_deps="swresample"
3094 ass_filter_deps="libass"
3095 atempo_filter_deps="avcodec"
3096 atempo_filter_select="rdft"
3097 azmq_filter_deps="libzmq"
3098 blackframe_filter_deps="gpl"
3099 boxblur_filter_deps="gpl"
3100 bs2b_filter_deps="libbs2b"
3101 colormatrix_filter_deps="gpl"
3102 cover_rect_filter_deps="avcodec avformat gpl"
3103 cropdetect_filter_deps="gpl"
3104 deinterlace_qsv_filter_deps="libmfx"
3105 deinterlace_vaapi_filter_deps="vaapi"
3106 delogo_filter_deps="gpl"
3107 deshake_filter_select="pixelutils"
3108 drawtext_filter_deps="libfreetype"
3109 eq_filter_deps="gpl"
3110 fftfilt_filter_deps="avcodec"
3111 fftfilt_filter_select="rdft"
3112 find_rect_filter_deps="avcodec avformat gpl"
3113 firequalizer_filter_deps="avcodec"
3114 firequalizer_filter_select="rdft"
3115 flite_filter_deps="libflite"
3116 framerate_filter_select="pixelutils"
3117 frei0r_filter_deps="frei0r dlopen"
3118 frei0r_src_filter_deps="frei0r dlopen"
3119 fspp_filter_deps="gpl"
3120 geq_filter_deps="gpl"
3121 histeq_filter_deps="gpl"
3122 hqdn3d_filter_deps="gpl"
3123 interlace_filter_deps="gpl"
3124 kerndeint_filter_deps="gpl"
3125 ladspa_filter_deps="ladspa dlopen"
3126 mcdeint_filter_deps="avcodec gpl"
3127 movie_filter_deps="avcodec avformat"
3128 mpdecimate_filter_deps="gpl"
3129 mpdecimate_filter_select="pixelutils"
3130 mptestsrc_filter_deps="gpl"
3131 negate_filter_deps="lut_filter"
3132 nnedi_filter_deps="gpl"
3133 ocr_filter_deps="libtesseract"
3134 ocv_filter_deps="libopencv"
3135 owdenoise_filter_deps="gpl"
3136 pan_filter_deps="swresample"
3137 perspective_filter_deps="gpl"
3138 phase_filter_deps="gpl"
3139 pp7_filter_deps="gpl"
3140 pp_filter_deps="gpl postproc"
3141 pullup_filter_deps="gpl"
3142 removelogo_filter_deps="avcodec avformat swscale"
3143 repeatfields_filter_deps="gpl"
3144 resample_filter_deps="avresample"
3145 rubberband_filter_deps="librubberband"
3146 sab_filter_deps="gpl swscale"
3147 scale2ref_filter_deps="swscale"
3148 scale_filter_deps="swscale"
3149 scale_qsv_filter_deps="libmfx"
3150 select_filter_select="pixelutils"
3151 showcqt_filter_deps="avcodec avformat swscale"
3152 showcqt_filter_select="fft"
3153 showfreqs_filter_deps="avcodec"
3154 showfreqs_filter_select="fft"
3155 showspectrum_filter_deps="avcodec"
3156 showspectrum_filter_select="fft"
3157 showspectrumpic_filter_deps="avcodec"
3158 showspectrumpic_filter_select="fft"
3159 signature_filter_deps="gpl avcodec avformat"
3160 smartblur_filter_deps="gpl swscale"
3161 sofalizer_filter_deps="netcdf avcodec"
3162 sofalizer_filter_select="fft"
3163 spectrumsynth_filter_deps="avcodec"
3164 spectrumsynth_filter_select="fft"
3165 spp_filter_deps="gpl avcodec"
3166 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3167 stereo3d_filter_deps="gpl"
3168 subtitles_filter_deps="avformat avcodec libass"
3169 super2xsai_filter_deps="gpl"
3170 pixfmts_super2xsai_test_deps="super2xsai_filter"
3171 tinterlace_filter_deps="gpl"
3172 tinterlace_merge_test_deps="tinterlace_filter"
3173 tinterlace_pad_test_deps="tinterlace_filter"
3174 uspp_filter_deps="gpl avcodec"
3175 vaguedenoiser_filter_deps="gpl"
3176 vidstabdetect_filter_deps="libvidstab"
3177 vidstabtransform_filter_deps="libvidstab"
3178 zmq_filter_deps="libzmq"
3179 zoompan_filter_deps="swscale"
3180 zscale_filter_deps="libzimg"
3181 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3182
3183 # examples
3184 avio_dir_cmd_deps="avformat avutil"
3185 avio_reading_deps="avformat avcodec avutil"
3186 decode_audio_example_deps="avcodec avutil"
3187 decode_video_example_deps="avcodec avutil"
3188 demuxing_decoding_example_deps="avcodec avformat avutil"
3189 encode_audio_example_deps="avcodec avutil"
3190 encode_video_example_deps="avcodec avutil"
3191 extract_mvs_example_deps="avcodec avformat avutil"
3192 filter_audio_example_deps="avfilter avutil"
3193 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3194 filtering_video_example_deps="avfilter avcodec avformat avutil"
3195 http_multiclient_example_deps="avformat avutil fork"
3196 metadata_example_deps="avformat avutil"
3197 muxing_example_deps="avcodec avformat avutil swscale"
3198 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3199 remuxing_example_deps="avcodec avformat avutil"
3200 resampling_audio_example_deps="avutil swresample"
3201 scaling_video_example_deps="avutil swscale"
3202 transcode_aac_example_deps="avcodec avformat swresample"
3203 transcoding_example_deps="avfilter avcodec avformat avutil"
3204
3205 # libraries, in linking order
3206 avcodec_deps="avutil"
3207 avdevice_deps="avformat avcodec avutil"
3208 avfilter_deps="avutil"
3209 avformat_deps="avcodec avutil"
3210 avresample_deps="avutil"
3211 postproc_deps="avutil gpl"
3212 swresample_deps="avutil"
3213 swscale_deps="avutil"
3214
3215 # programs
3216 ffmpeg_deps="avcodec avfilter avformat swresample"
3217 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3218                null_filter
3219                trim_filter"
3220 ffplay_deps="avcodec avformat swscale swresample sdl2"
3221 ffplay_libs='$sdl2_libs'
3222 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3223 ffprobe_deps="avcodec avformat"
3224 ffserver_deps="avformat fork sarestart"
3225 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3226
3227 # documentation
3228 podpages_deps="perl"
3229 manpages_deps="perl pod2man"
3230 htmlpages_deps="perl"
3231 htmlpages_deps_any="makeinfo_html texi2html"
3232 txtpages_deps="perl makeinfo"
3233 doc_deps_any="manpages htmlpages podpages txtpages"
3234
3235 # default parameters
3236
3237 logfile="config.log"
3238
3239 # installation paths
3240 prefix_default="/usr/local"
3241 bindir_default='${prefix}/bin'
3242 datadir_default='${prefix}/share/ffmpeg'
3243 docdir_default='${prefix}/share/doc/ffmpeg'
3244 incdir_default='${prefix}/include'
3245 libdir_default='${prefix}/lib'
3246 mandir_default='${prefix}/share/man'
3247
3248 # toolchain
3249 ar_default="ar"
3250 cc_default="gcc"
3251 cxx_default="g++"
3252 host_cc_default="gcc"
3253 doxygen_default="doxygen"
3254 install="install"
3255 ln_s_default="ln -s -f"
3256 nm_default="nm -g"
3257 objformat="elf"
3258 pkg_config_default=pkg-config
3259 ranlib_default="ranlib"
3260 strip_default="strip"
3261 version_script='--version-script'
3262 yasmexe_default="yasm"
3263 windres_default="windres"
3264
3265 # OS
3266 target_os_default=$(tolower $(uname -s))
3267 host_os=$target_os_default
3268
3269 # machine
3270 if test "$target_os_default" = aix; then
3271     arch_default=$(uname -p)
3272     strip_default="strip -X32_64"
3273 else
3274     arch_default=$(uname -m)
3275 fi
3276 cpu="generic"
3277 intrinsics="none"
3278
3279 # configurable options
3280 enable $PROGRAM_LIST
3281 enable $DOCUMENT_LIST
3282 enable $EXAMPLE_LIST
3283 enable $(filter_out avresample $LIBRARY_LIST)
3284 enable stripping
3285
3286 enable asm
3287 enable debug
3288 enable doc
3289 enable faan faandct faanidct
3290 enable optimizations
3291 enable runtime_cpudetect
3292 enable safe_bitstream_reader
3293 enable static
3294 enable swscale_alpha
3295 enable valgrind_backtrace
3296
3297 sws_max_filter_size_default=256
3298 set_default sws_max_filter_size
3299
3300 # build settings
3301 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3302 LIBPREF="lib"
3303 LIBSUF=".a"
3304 FULLNAME='$(NAME)$(BUILDSUF)'
3305 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3306 SLIBPREF="lib"
3307 SLIBSUF=".so"
3308 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3309 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3310 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3311 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3312 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3313 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3314 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3315
3316 asflags_filter=echo
3317 cflags_filter=echo
3318 ldflags_filter=echo
3319
3320 AS_C='-c'
3321 AS_O='-o $@'
3322 CC_C='-c'
3323 CC_E='-E -o $@'
3324 CC_O='-o $@'
3325 CXX_C='-c'
3326 CXX_O='-o $@'
3327 OBJCC_C='-c'
3328 OBJCC_E='-E -o $@'
3329 OBJCC_O='-o $@'
3330 LD_O='-o $@'
3331 LD_LIB='-l%'
3332 LD_PATH='-L'
3333 HOSTCC_C='-c'
3334 HOSTCC_E='-E -o $@'
3335 HOSTCC_O='-o $@'
3336 HOSTLD_O='-o $@'
3337
3338 host_extralibs='-lm'
3339 host_cflags_filter=echo
3340 host_ldflags_filter=echo
3341
3342 target_path='$(CURDIR)'
3343
3344 # since the object filename is not given with the -MM flag, the compiler
3345 # is only able to print the basename, and we must add the path ourselves
3346 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3347 DEPFLAGS='-MM'
3348
3349 # find source path
3350 if test -f configure; then
3351     source_path=.
3352 else
3353     source_path=$(cd $(dirname "$0"); pwd)
3354     case "$source_path" in
3355         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3356     esac
3357     test -e "$source_path/config.h" &&
3358         die "Out of tree builds are impossible with config.h in source dir."
3359 fi
3360
3361 for v in "$@"; do
3362     r=${v#*=}
3363     l=${v%"$r"}
3364     r=$(sh_quote "$r")
3365     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3366 done
3367
3368 find_things(){
3369     thing=$1
3370     pattern=$2
3371     file=$source_path/$3
3372     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3373 }
3374
3375 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3376 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3377 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3378 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3379 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3380 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3381 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3382 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3383 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3384
3385 find_things_extern(){
3386     thing=$1
3387     pattern=$2
3388     file=$source_path/$3
3389     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3390 }
3391
3392 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3393 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3394
3395 ALL_COMPONENTS="
3396     $BSF_LIST
3397     $DECODER_LIST
3398     $DEMUXER_LIST
3399     $ENCODER_LIST
3400     $FILTER_LIST
3401     $HWACCEL_LIST
3402     $INDEV_LIST
3403     $MUXER_LIST
3404     $OUTDEV_LIST
3405     $PARSER_LIST
3406     $PROTOCOL_LIST
3407 "
3408
3409 for n in $COMPONENT_LIST; do
3410     v=$(toupper ${n%s})_LIST
3411     eval enable \$$v
3412     eval ${n}_if_any="\$$v"
3413 done
3414
3415 enable $ARCH_EXT_LIST
3416
3417 die_unknown(){
3418     echo "Unknown option \"$1\"."
3419     echo "See $0 --help for available options."
3420     exit 1
3421 }
3422
3423 print_in_columns() {
3424     cols=$(expr $ncols / 24)
3425     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3426 }
3427
3428 show_list() {
3429     suffix=_$1
3430     shift
3431     echo $* | sed s/$suffix//g | print_in_columns
3432     exit 0
3433 }
3434
3435 rand_list(){
3436     IFS=', '
3437     set -- $*
3438     unset IFS
3439     for thing; do
3440         comp=${thing%:*}
3441         prob=${thing#$comp}
3442         prob=${prob#:}
3443         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3444         echo "prob ${prob:-0.5}"
3445         printf '%s\n' $comp
3446     done
3447 }
3448
3449 do_random(){
3450     action=$1
3451     shift
3452     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3453     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3454 }
3455
3456 for opt do
3457     optval="${opt#*=}"
3458     case "$opt" in
3459         --extra-ldflags=*)
3460             add_ldflags $optval
3461         ;;
3462         --extra-ldexeflags=*)
3463             add_ldexeflags $optval
3464         ;;
3465         --extra-ldlibflags=*)
3466             add_ldlibflags $optval
3467         ;;
3468         --extra-libs=*)
3469             add_extralibs $optval
3470         ;;
3471         --disable-devices)
3472             disable $INDEV_LIST $OUTDEV_LIST
3473         ;;
3474         --enable-debug=*)
3475             debuglevel="$optval"
3476         ;;
3477         --disable-programs)
3478             disable $PROGRAM_LIST
3479         ;;
3480         --disable-everything)
3481             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3482         ;;
3483         --disable-all)
3484             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3485             disable $LIBRARY_LIST $PROGRAM_LIST doc
3486             enable avutil
3487         ;;
3488         --enable-random|--disable-random)
3489             action=${opt%%-random}
3490             do_random ${action#--} $COMPONENT_LIST
3491         ;;
3492         --enable-random=*|--disable-random=*)
3493             action=${opt%%-random=*}
3494             do_random ${action#--} $optval
3495         ;;
3496         --enable-*=*|--disable-*=*)
3497             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3498             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3499             eval list=\$$(toupper $thing)_LIST
3500             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3501             list=$(filter "$name" $list)
3502             [ "$list" = "" ] && warn "Option $opt did not match anything"
3503             $action $list
3504         ;;
3505         --enable-?*|--disable-?*)
3506             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3507             if is_in $option $COMPONENT_LIST; then
3508                 test $action = disable && action=unset
3509                 eval $action \$$(toupper ${option%s})_LIST
3510             elif is_in $option $CMDLINE_SELECT; then
3511                 $action $option
3512             else
3513                 die_unknown $opt
3514             fi
3515         ;;
3516         --list-*)
3517             NAME="${opt#--list-}"
3518             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3519             NAME=${NAME%s}
3520             eval show_list $NAME \$$(toupper $NAME)_LIST
3521         ;;
3522         --help|-h) show_help
3523         ;;
3524         --quiet|-q) quiet=yes
3525         ;;
3526         --fatal-warnings) enable fatal_warnings
3527         ;;
3528         *)
3529             optname="${opt%%=*}"
3530             optname="${optname#--}"
3531             optname=$(echo "$optname" | sed 's/-/_/g')
3532             if is_in $optname $CMDLINE_SET; then
3533                 eval $optname='$optval'
3534             elif is_in $optname $CMDLINE_APPEND; then
3535                 append $optname "$optval"
3536             else
3537                 die_unknown $opt
3538             fi
3539         ;;
3540     esac
3541 done
3542
3543 for e in $env; do
3544     eval "export $e"
3545 done
3546
3547 # Mark specifically enabled, but normally autodetected libraries as requested.
3548 for lib in $AUTODETECT_LIBS; do
3549     enabled $lib && request $lib
3550 done
3551
3552 # Enable platform codecs by default.
3553 enable_weak audiotoolbox
3554
3555 # Enable hwaccels by default.
3556 enable_weak d3d11va dxva2 vaapi vda vdpau videotoolbox_hwaccel xvmc
3557 enable_weak xlib
3558
3559 enable_weak cuda cuvid nvenc vda_framework videotoolbox videotoolbox_encoder
3560
3561 disabled logging && logfile=/dev/null
3562
3563 die_license_disabled() {
3564     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3565 }
3566
3567 die_license_disabled_gpl() {
3568     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3569 }
3570
3571 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3572 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3573
3574 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3575 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3576
3577 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3578
3579 # Disable all the library-specific components if the library itself
3580 # is disabled, see AVCODEC_LIST and following _LIST variables.
3581
3582 disable_components(){
3583     disabled ${1} && disable $(
3584         eval components="\$$(toupper ${1})_COMPONENTS"
3585         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3586     )
3587 }
3588
3589 map 'disable_components $v' $LIBRARY_LIST
3590
3591 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3592 set >> $logfile
3593
3594 test -n "$valgrind" && toolchain="valgrind-memcheck"
3595
3596 case "$toolchain" in
3597     *-asan)
3598         cc_default="${toolchain%-asan}"
3599         add_cflags  -fsanitize=address
3600         add_ldflags -fsanitize=address
3601     ;;
3602     *-msan)
3603         cc_default="${toolchain%-msan}"
3604         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3605         add_ldflags -fsanitize=memory
3606     ;;
3607     *-tsan)
3608         cc_default="${toolchain%-tsan}"
3609         add_cflags  -fsanitize=thread -fPIE
3610         add_ldflags -fsanitize=thread -pie
3611         case "$toolchain" in
3612             gcc-tsan)
3613                 add_cflags  -fPIC
3614                 add_ldflags -fPIC
3615                 ;;
3616         esac
3617     ;;
3618     *-usan)
3619         cc_default="${toolchain%-usan}"
3620         add_cflags  -fsanitize=undefined
3621         add_ldflags -fsanitize=undefined
3622     ;;
3623     valgrind-*)
3624         target_exec_default="valgrind"
3625         case "$toolchain" in
3626             valgrind-massif)
3627                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3628                 ;;
3629             valgrind-memcheck)
3630                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3631                 ;;
3632         esac
3633     ;;
3634     msvc)
3635         # Check whether the current MSVC version needs the C99 converter.
3636         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3637         # support enough of C99 to build ffmpeg. Default to the new
3638         # behaviour if the regexp was unable to match anything, since this
3639         # successfully parses the version number of existing supported
3640         # versions that require the converter (MSVC 2010 and 2012).
3641         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3642         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3643             cc_default="cl"
3644             cxx_default="cl"
3645         else
3646             cc_default="c99wrap cl"
3647             cxx_default="c99wrap cl"
3648         fi
3649         ld_default="$source_path/compat/windows/mslink"
3650         nm_default="dumpbin -symbols"
3651         ar_default="lib"
3652         case "$arch" in
3653         arm*)
3654             as_default="armasm"
3655             ;;
3656         esac
3657         target_os_default="win32"
3658         # Use a relative path for TMPDIR. This makes sure all the
3659         # ffconf temp files are written with a relative path, avoiding
3660         # issues with msys/win32 path conversion for MSVC parameters
3661         # such as -Fo<file> or -out:<file>.
3662         TMPDIR=.
3663     ;;
3664     icl)
3665         cc_default="icl"
3666         ld_default="xilink"
3667         nm_default="dumpbin -symbols"
3668         ar_default="xilib"
3669         target_os_default="win32"
3670         TMPDIR=.
3671     ;;
3672     gcov)
3673         add_cflags  -fprofile-arcs -ftest-coverage
3674         add_ldflags -fprofile-arcs -ftest-coverage
3675     ;;
3676     llvm-cov)
3677         add_cflags -fprofile-arcs -ftest-coverage
3678         add_ldflags --coverage
3679     ;;
3680     hardened)
3681         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3682         add_cflags   -fno-strict-overflow -fstack-protector-all
3683         add_ldflags  -Wl,-z,relro -Wl,-z,now
3684         add_cflags   -fPIE
3685         add_ldexeflags -fPIE -pie
3686     ;;
3687     ?*)
3688         die "Unknown toolchain $toolchain"
3689     ;;
3690 esac
3691
3692 test -n "$cross_prefix" && enable cross_compile
3693
3694 if enabled cross_compile; then
3695     test -n "$arch" && test -n "$target_os" ||
3696         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3697 fi
3698
3699 ar_default="${cross_prefix}${ar_default}"
3700 cc_default="${cross_prefix}${cc_default}"
3701 cxx_default="${cross_prefix}${cxx_default}"
3702 nm_default="${cross_prefix}${nm_default}"
3703 pkg_config_default="${cross_prefix}${pkg_config_default}"
3704 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3705     ranlib_default="${cross_prefix}${ranlib_default} -D"
3706 else
3707     ranlib_default="${cross_prefix}${ranlib_default}"
3708 fi
3709 strip_default="${cross_prefix}${strip_default}"
3710 windres_default="${cross_prefix}${windres_default}"
3711
3712 sysinclude_default="${sysroot}/usr/include"
3713
3714 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3715     target_exec target_os yasmexe
3716 enabled cross_compile || host_cc_default=$cc
3717 set_default host_cc
3718
3719 pkg_config_fail_message=""
3720 if ! $pkg_config --version >/dev/null 2>&1; then
3721     warn "$pkg_config not found, library detection may fail."
3722     pkg_config=false
3723 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3724     pkg_config_fail_message="
3725 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3726 fi
3727
3728 if test $doxygen != $doxygen_default && \
3729   ! $doxygen --version >/dev/null 2>&1; then
3730     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3731 fi
3732
3733 exesuf() {
3734     case $1 in
3735         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3736     esac
3737 }
3738
3739 EXESUF=$(exesuf $target_os)
3740 HOSTEXESUF=$(exesuf $host_os)
3741
3742 # set temporary file name
3743 : ${TMPDIR:=$TEMPDIR}
3744 : ${TMPDIR:=$TMP}
3745 : ${TMPDIR:=/tmp}
3746
3747 if [ -n "$tempprefix" ] ; then
3748     mktemp(){
3749         echo $tempprefix.${HOSTNAME}.${UID}
3750     }
3751 elif ! check_cmd mktemp -u XXXXXX; then
3752     # simple replacement for missing mktemp
3753     # NOT SAFE FOR GENERAL USE
3754     mktemp(){
3755         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3756     }
3757 fi
3758
3759 tmpfile(){
3760     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3761         (set -C; exec > $tmp) 2>/dev/null ||
3762         die "Unable to create temporary file in $TMPDIR."
3763     append TMPFILES $tmp
3764     eval $1=$tmp
3765 }
3766
3767 trap 'rm -f -- $TMPFILES' EXIT
3768
3769 tmpfile TMPASM .asm
3770 tmpfile TMPC   .c
3771 tmpfile TMPCPP .cpp
3772 tmpfile TMPE   $EXESUF
3773 tmpfile TMPH   .h
3774 tmpfile TMPM   .m
3775 tmpfile TMPO   .o
3776 tmpfile TMPS   .S
3777 tmpfile TMPSH  .sh
3778 tmpfile TMPV   .ver
3779
3780 unset -f mktemp
3781
3782 chmod +x $TMPE
3783
3784 # make sure we can execute files in $TMPDIR
3785 cat > $TMPSH 2>> $logfile <<EOF
3786 #! /bin/sh
3787 EOF
3788 chmod +x $TMPSH >> $logfile 2>&1
3789 if ! $TMPSH >> $logfile 2>&1; then
3790     cat <<EOF
3791 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3792 variable to another directory and make sure that it is not mounted noexec.
3793 EOF
3794     die "Sanity test failed."
3795 fi
3796
3797 armasm_flags(){
3798     for flag; do
3799         case $flag in
3800             # Filter out MSVC cl.exe options from cflags that shouldn't
3801             # be passed to gas-preprocessor
3802             -M[TD]*)                                            ;;
3803             *)                  echo $flag                      ;;
3804         esac
3805    done
3806 }
3807
3808 ccc_flags(){
3809     for flag; do
3810         case $flag in
3811             -std=c99)           echo -c99                       ;;
3812             -mcpu=*)            echo -arch ${flag#*=}           ;;
3813             -mieee)             echo -ieee                      ;;
3814             -O*|-fast)          echo $flag                      ;;
3815             -fno-math-errno)    echo -assume nomath_errno       ;;
3816             -g)                 echo -g3                        ;;
3817             -Wall)              echo -msg_enable level2         ;;
3818             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3819             -Wl,*)              echo $flag                      ;;
3820             -f*|-W*)                                            ;;
3821             *)                  echo $flag                      ;;
3822         esac
3823    done
3824 }
3825
3826 cparser_flags(){
3827     for flag; do
3828         case $flag in
3829             -Wno-switch)             echo -Wno-switch-enum ;;
3830             -Wno-format-zero-length) ;;
3831             -Wdisabled-optimization) ;;
3832             -Wno-pointer-sign)       echo -Wno-other ;;
3833             *)                       echo $flag ;;
3834         esac
3835     done
3836 }
3837
3838 msvc_common_flags(){
3839     for flag; do
3840         case $flag in
3841             # In addition to specifying certain flags under the compiler
3842             # specific filters, they must be specified here as well or else the
3843             # generic catch all at the bottom will print the original flag.
3844             -Wall)                ;;
3845             -std=c99)             ;;
3846             # Common flags
3847             -fomit-frame-pointer) ;;
3848             -g)                   echo -Z7 ;;
3849             -fno-math-errno)      ;;
3850             -fno-common)          ;;
3851             -fno-signed-zeros)    ;;
3852             -fPIC)                ;;
3853             -mthumb)              ;;
3854             -march=*)             ;;
3855             -lz)                  echo zlib.lib ;;
3856             -lavicap32)           echo vfw32.lib user32.lib ;;
3857             -lx264)               echo libx264.lib ;;
3858             -lstdc++)             ;;
3859             -l*)                  echo ${flag#-l}.lib ;;
3860             -LARGEADDRESSAWARE)   echo $flag ;;
3861             -L*)                  echo -libpath:${flag#-L} ;;
3862             *)                    echo $flag ;;
3863         esac
3864     done
3865 }
3866
3867 msvc_flags(){
3868     msvc_common_flags "$@"
3869     for flag; do
3870         case $flag in
3871             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3872                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3873                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3874                                        -wd4307 \
3875                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
3876         esac
3877     done
3878 }
3879
3880 icl_flags(){
3881     msvc_common_flags "$@"
3882     for flag; do
3883         case $flag in
3884             # Despite what Intel's documentation says -Wall, which is supported
3885             # on Windows, does enable remarks so disable them here.
3886             -Wall)                echo $flag -Qdiag-disable:remark ;;
3887             -std=c99)             echo -Qstd=c99 ;;
3888             -flto)                echo -ipo ;;
3889         esac
3890     done
3891 }
3892
3893 icc_flags(){
3894     for flag; do
3895         case $flag in
3896             -flto)                echo -ipo ;;
3897             *)                    echo $flag ;;
3898         esac
3899     done
3900 }
3901
3902 pgi_flags(){
3903     for flag; do
3904         case $flag in
3905             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3906             -fomit-frame-pointer) echo -Mnoframe ;;
3907             -g)                   echo -gopt ;;
3908             *)                    echo $flag ;;
3909         esac
3910     done
3911 }
3912
3913 suncc_flags(){
3914     for flag; do
3915         case $flag in
3916             -march=*|-mcpu=*)
3917                 case "${flag#*=}" in
3918                     native)                   echo -xtarget=native       ;;
3919                     v9|niagara)               echo -xarch=sparc          ;;
3920                     ultrasparc)               echo -xarch=sparcvis       ;;
3921                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3922                     i586|pentium)             echo -xchip=pentium        ;;
3923                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3924                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3925                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3926                     pentium4*)          echo -xtarget=pentium4           ;;
3927                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3928                     *-sse3)             echo -xarch=sse3                 ;;
3929                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3930                     bonnell)                   echo -xarch=ssse3         ;;
3931                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3932                     westmere)                  echo -xtarget=westmere    ;;
3933                     silvermont)                echo -xarch=sse4_2        ;;
3934                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3935                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
3936                                                echo -xarch=avx           ;;
3937                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3938                     btver1)                    echo -xarch=amdsse4a      ;;
3939                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
3940                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3941                     k8|opteron|athlon64|athlon-fx)
3942                                                echo -xarch=sse2a         ;;
3943                     athlon*)                   echo -xarch=pentium_proa  ;;
3944                 esac
3945                 ;;
3946             -std=c99)             echo -xc99              ;;
3947             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3948             -fPIC)                echo -KPIC -xcode=pic32 ;;
3949             -W*,*)                echo $flag              ;;
3950             -f*-*|-W*|-mimpure-text)                      ;;
3951             -shared)              echo -G                 ;;
3952             *)                    echo $flag              ;;
3953         esac
3954     done
3955 }
3956
3957 tms470_flags(){
3958     for flag; do
3959         case $flag in
3960             -march=*|-mcpu=*)
3961                 case "${flag#*=}" in
3962                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3963                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3964                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3965                     armv6*|arm11*)          echo -mv=6   ;;
3966                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3967                                             echo -mv=5e  ;;
3968                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3969                 esac
3970                 ;;
3971             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3972             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3973             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3974             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3975             -msoft-float)   echo --float_support=vfplib       ;;
3976             -O[0-3]|-mf=*)  echo $flag                        ;;
3977             -g)             echo -g -mn                       ;;
3978             -pds=*)         echo $flag                        ;;
3979             -D*|-I*)        echo $flag                        ;;
3980             --gcc|--abi=*)  echo $flag                        ;;
3981             -me)            echo $flag                        ;;
3982         esac
3983     done
3984 }
3985
3986 probe_cc(){
3987     pfx=$1
3988     _cc=$2
3989     first=$3
3990
3991     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3992     unset _ld_o _ldflags _ld_lib _ld_path
3993     unset _depflags _DEPCMD _DEPFLAGS
3994     _flags_filter=echo
3995
3996     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3997         true # no-op to avoid reading stdin in following checks
3998     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3999         _type=llvm_gcc
4000         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4001         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4002         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4003         _cflags_speed='-O3'
4004         _cflags_size='-Os'
4005     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4006         _type=gcc
4007         gcc_version=$($_cc --version | head -n1)
4008         gcc_basever=$($_cc -dumpversion)
4009         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4010         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4011         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4012         case $gcc_basever in
4013             2) ;;
4014             2.*) ;;
4015             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4016         esac
4017         if [ "$first" = true ]; then
4018             case $gcc_basever in
4019                 4.2*)
4020                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4021             esac
4022         fi
4023         _cflags_speed='-O3'
4024         _cflags_size='-Os'
4025     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4026         _type=icc
4027         _ident=$($_cc --version | head -n1)
4028         _depflags='-MMD'
4029         _cflags_speed='-O3'
4030         _cflags_size='-Os'
4031         _cflags_noopt='-O1'
4032         _flags_filter=icc_flags
4033     elif $_cc -v 2>&1 | grep -q xlc; then
4034         _type=xlc
4035         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4036         _cflags_speed='-O5'
4037         _cflags_size='-O5 -qcompact'
4038     elif $_cc -V 2>/dev/null | grep -q Compaq; then
4039         _type=ccc
4040         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
4041         _DEPFLAGS='-M'
4042         _cflags_speed='-fast'
4043         _cflags_size='-O1'
4044         _flags_filter=ccc_flags
4045     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4046         test -d "$sysroot" || die "No valid sysroot specified."
4047         _type=armcc
4048         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4049         armcc_conf="$PWD/armcc.conf"
4050         $_cc --arm_linux_configure                 \
4051              --arm_linux_config_file="$armcc_conf" \
4052              --configure_sysroot="$sysroot"        \
4053              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4054              die "Error creating armcc configuration file."
4055         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4056         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4057         as_default="${cross_prefix}gcc"
4058         _depflags='-MMD'
4059         _cflags_speed='-O3'
4060         _cflags_size='-Os'
4061     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
4062         _type=tms470
4063         _ident=$($_cc -version | head -n1 | tr -s ' ')
4064         _flags='--gcc --abi=eabi -me'
4065         _cc_e='-ppl -fe=$@'
4066         _cc_o='-fe=$@'
4067         _depflags='-ppa -ppd=$(@:.o=.d)'
4068         _cflags_speed='-O3 -mf=5'
4069         _cflags_size='-O3 -mf=2'
4070         _flags_filter=tms470_flags
4071     elif $_cc -v 2>&1 | grep -q clang; then
4072         _type=clang
4073         _ident=$($_cc --version 2>/dev/null | head -n1)
4074         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4075         _cflags_speed='-O3'
4076         _cflags_size='-Oz'
4077     elif $_cc -V 2>&1 | grep -q Sun; then
4078         _type=suncc
4079         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4080         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4081         _DEPFLAGS='-xM1 -xc99'
4082         _ldflags='-std=c99'
4083         _cflags_speed='-O5'
4084         _cflags_size='-O5 -xspace'
4085         _flags_filter=suncc_flags
4086     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4087         _type=pathscale
4088         _ident=$($_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'
4093     elif $_cc -v 2>&1 | grep -q Open64; then
4094         _type=open64
4095         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4096         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4097         _cflags_speed='-O2'
4098         _cflags_size='-Os'
4099         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4100     elif $_cc -V 2>&1 | grep -q Portland; then
4101         _type=pgi
4102         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
4103         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
4104         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
4105         _cflags_size="-O2 -Munroll=c:1 $opt_common"
4106         _cflags_noopt="-O"
4107         _flags_filter=pgi_flags
4108     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4109         _type=armasm
4110         _ident=$($_cc | head -n1)
4111         # 4509: "This form of conditional instruction is deprecated"
4112         _flags="-nologo -ignore 4509"
4113         _flags_filter=armasm_flags
4114     elif $_cc 2>&1 | grep -q Intel; then
4115         _type=icl
4116         _ident=$($_cc 2>&1 | head -n1)
4117         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4118         # Not only is O3 broken on 13.x+ but it is slower on all previous
4119         # versions (tested) as well.
4120         _cflags_speed="-O2"
4121         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4122         if $_cc 2>&1 | grep -q Linker; then
4123             _ld_o='-out:$@'
4124         else
4125             _ld_o='-Fe$@'
4126         fi
4127         _cc_o='-Fo$@'
4128         _cc_e='-P'
4129         _flags_filter=icl_flags
4130         _ld_lib='lib%.a'
4131         _ld_path='-libpath:'
4132         # -Qdiag-error to make icl error when seeing certain unknown arguments
4133         _flags='-nologo -Qdiag-error:4044,10157'
4134         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4135         # with MSVC which enables it by default.
4136         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4137         disable stripping
4138     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4139         # lld can emulate multiple different linkers; in ms link.exe mode,
4140         # the -? parameter gives the help output which contains an identifyable
4141         # string, while it gives an error in other modes.
4142         _type=lld-link
4143         # The link.exe mode doesn't have a switch for getting the version,
4144         # but we can force it back to gnu mode and get the version from there.
4145         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4146         _ld_o='-out:$@'
4147         _flags_filter=msvc_flags
4148         _ld_lib='lib%.a'
4149         _ld_path='-libpath:'
4150     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4151         _type=msvc
4152         _ident=$($_cc 2>&1 | head -n1)
4153         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4154         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4155         _cflags_speed="-O2"
4156         _cflags_size="-O1"
4157         if $_cc -nologo- 2>&1 | grep -q Linker; then
4158             _ld_o='-out:$@'
4159         else
4160             _ld_o='-Fe$@'
4161         fi
4162         _cc_o='-Fo$@'
4163         _cc_e='-P -Fi$@'
4164         _flags_filter=msvc_flags
4165         _ld_lib='lib%.a'
4166         _ld_path='-libpath:'
4167         _flags='-nologo'
4168         disable stripping
4169     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4170         _type=cparser
4171         _ident=$($_cc --version | head -n1)
4172         _depflags='-MMD'
4173         _cflags_speed='-O4'
4174         _cflags_size='-O2'
4175         _flags_filter=cparser_flags
4176     fi
4177
4178     eval ${pfx}_type=\$_type
4179     eval ${pfx}_ident=\$_ident
4180 }
4181
4182 set_ccvars(){
4183     eval ${1}_C=\${_cc_c-\${${1}_C}}
4184     eval ${1}_E=\${_cc_e-\${${1}_E}}
4185     eval ${1}_O=\${_cc_o-\${${1}_O}}
4186
4187     if [ -n "$_depflags" ]; then
4188         eval ${1}_DEPFLAGS=\$_depflags
4189     else
4190         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4191         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4192         eval DEP${1}FLAGS=\$_flags
4193     fi
4194 }
4195
4196 probe_cc cc "$cc" "true"
4197 cflags_filter=$_flags_filter
4198 cflags_speed=$_cflags_speed
4199 cflags_size=$_cflags_size
4200 cflags_noopt=$_cflags_noopt
4201 add_cflags $_flags $_cflags
4202 cc_ldflags=$_ldflags
4203 set_ccvars CC
4204 set_ccvars CXX
4205
4206 probe_cc hostcc "$host_cc"
4207 host_cflags_filter=$_flags_filter
4208 add_host_cflags  $_flags $_cflags
4209 set_ccvars HOSTCC
4210
4211 test -n "$cc_type" && enable $cc_type ||
4212     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4213
4214 : ${as_default:=$cc}
4215 : ${objcc_default:=$cc}
4216 : ${dep_cc_default:=$cc}
4217 : ${ld_default:=$cc}
4218 : ${host_ld_default:=$host_cc}
4219 set_default ar as objcc dep_cc ld ln_s host_ld windres
4220
4221 probe_cc as "$as"
4222 asflags_filter=$_flags_filter
4223 add_asflags $_flags $_cflags
4224 set_ccvars AS
4225
4226 probe_cc objcc "$objcc"
4227 objcflags_filter=$_flags_filter
4228 add_objcflags $_flags $_cflags
4229 set_ccvars OBJC
4230
4231 probe_cc ld "$ld"
4232 ldflags_filter=$_flags_filter
4233 add_ldflags $_flags $_ldflags
4234 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4235 LD_O=${_ld_o-$LD_O}
4236 LD_LIB=${_ld_lib-$LD_LIB}
4237 LD_PATH=${_ld_path-$LD_PATH}
4238
4239 probe_cc hostld "$host_ld"
4240 host_ldflags_filter=$_flags_filter
4241 add_host_ldflags $_flags $_ldflags
4242 HOSTLD_O=${_ld_o-$HOSTLD_O}
4243
4244 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4245     probe_cc depcc "$dep_cc"
4246     CCDEP=${_DEPCMD:-$DEPCMD}
4247     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4248     DEPCCFLAGS=$_flags
4249 fi
4250
4251 if $ar 2>&1 | grep -q Microsoft; then
4252     arflags="-nologo"
4253     ar_o='-out:$@'
4254 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
4255     arflags="rq"
4256     ar_o='$@'
4257 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
4258     arflags='-Xany -r -c'
4259     ar_o='$@'
4260 elif $ar 2>&1 | grep -q "\[D\] "; then
4261     arflags="rcD"
4262     ar_o='$@'
4263 else
4264     arflags="rc"
4265     ar_o='$@'
4266 fi
4267
4268 add_cflags $extra_cflags
4269 add_cxxflags $extra_cxxflags
4270 add_objcflags $extra_objcflags
4271 add_asflags $extra_cflags
4272
4273 if test -n "$sysroot"; then
4274     case "$cc_type" in
4275         gcc|llvm_gcc|clang)
4276             add_cppflags --sysroot="$sysroot"
4277             add_ldflags --sysroot="$sysroot"
4278 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
4279             add_cppflags -isysroot "$sysroot"
4280             add_ldflags -isysroot "$sysroot"
4281         ;;
4282         tms470)
4283             add_cppflags -I"$sysinclude"
4284             add_ldflags  --sysroot="$sysroot"
4285         ;;
4286     esac
4287 fi
4288
4289 if test "$cpu" = host; then
4290     enabled cross_compile &&
4291         die "--cpu=host makes no sense when cross-compiling."
4292
4293     case "$cc_type" in
4294         gcc|llvm_gcc)
4295             check_native(){
4296                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4297                 sed -n "/cc1.*$1=/{
4298                             s/.*$1=\\([^ ]*\\).*/\\1/
4299                             p
4300                             q
4301                         }" $TMPE
4302             }
4303             cpu=$(check_native -march || check_native -mcpu)
4304         ;;
4305         clang)
4306             check_native(){
4307                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4308                 sed -n "/cc1.*-target-cpu /{
4309                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4310                             p
4311                             q
4312                         }" $TMPE
4313             }
4314             cpu=$(check_native -march)
4315         ;;
4316     esac
4317
4318     test "${cpu:-host}" = host &&
4319         die "--cpu=host not supported with compiler $cc"
4320 fi
4321
4322 # Deal with common $arch aliases
4323 case "$arch" in
4324     aarch64|arm64)
4325         arch="aarch64"
4326     ;;
4327     arm*|iPad*|iPhone*)
4328         arch="arm"
4329     ;;
4330     mips*|IP*)
4331         case "$arch" in
4332         *el)
4333             add_cppflags -EL
4334             add_ldflags -EL
4335         ;;
4336         *eb)
4337             add_cppflags -EB
4338             add_ldflags -EB
4339         ;;
4340         esac
4341         arch="mips"
4342     ;;
4343     parisc*|hppa*)
4344         arch="parisc"
4345     ;;
4346     "Power Macintosh"|ppc*|powerpc*)
4347         arch="ppc"
4348     ;;
4349     s390|s390x)
4350         arch="s390"
4351     ;;
4352     sh4|sh)
4353         arch="sh4"
4354     ;;
4355     sun4*|sparc*)
4356         arch="sparc"
4357     ;;
4358     tilegx|tile-gx)
4359         arch="tilegx"
4360     ;;
4361     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4362         arch="x86"
4363     ;;
4364 esac
4365
4366 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4367 enable $arch
4368
4369 # Add processor-specific flags
4370 if enabled aarch64; then
4371
4372     case $cpu in
4373         armv*)
4374             cpuflags="-march=$cpu"
4375         ;;
4376         *)
4377             cpuflags="-mcpu=$cpu"
4378         ;;
4379     esac
4380
4381 elif enabled alpha; then
4382
4383     cpuflags="-mcpu=$cpu"
4384
4385 elif enabled arm; then
4386
4387     check_arm_arch() {
4388         check_cpp_condition stddef.h \
4389             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4390             $cpuflags
4391     }
4392
4393     probe_arm_arch() {
4394         if   check_arm_arch 4;        then echo armv4
4395         elif check_arm_arch 4T;       then echo armv4t
4396         elif check_arm_arch 5;        then echo armv5
4397         elif check_arm_arch 5E;       then echo armv5e
4398         elif check_arm_arch 5T;       then echo armv5t
4399         elif check_arm_arch 5TE;      then echo armv5te
4400         elif check_arm_arch 5TEJ;     then echo armv5te
4401         elif check_arm_arch 6;        then echo armv6
4402         elif check_arm_arch 6J;       then echo armv6j
4403         elif check_arm_arch 6K;       then echo armv6k
4404         elif check_arm_arch 6Z;       then echo armv6z
4405         elif check_arm_arch 6ZK;      then echo armv6zk
4406         elif check_arm_arch 6T2;      then echo armv6t2
4407         elif check_arm_arch 7;        then echo armv7
4408         elif check_arm_arch 7A  7_A;  then echo armv7-a
4409         elif check_arm_arch 7S;       then echo armv7-a
4410         elif check_arm_arch 7R  7_R;  then echo armv7-r
4411         elif check_arm_arch 7M  7_M;  then echo armv7-m
4412         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4413         elif check_arm_arch 8A  8_A;  then echo armv8-a
4414         fi
4415     }
4416
4417     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4418
4419     case $cpu in
4420         armv*)
4421             cpuflags="-march=$cpu"
4422             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4423         ;;
4424         *)
4425             cpuflags="-mcpu=$cpu"
4426             case $cpu in
4427                 cortex-a*)                               subarch=armv7a  ;;
4428                 cortex-r*)                               subarch=armv7r  ;;
4429                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4430                 arm11*)                                  subarch=armv6   ;;
4431                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4432                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4433                 *)                             subarch=$(probe_arm_arch) ;;
4434             esac
4435         ;;
4436     esac
4437
4438     case "$subarch" in
4439         armv5t*)    enable fast_clz                ;;
4440         armv[6-8]*)
4441             enable fast_clz
4442             disabled fast_unaligned || enable fast_unaligned
4443             ;;
4444     esac
4445
4446 elif enabled avr32; then
4447
4448     case $cpu in
4449         ap7[02]0[0-2])
4450             subarch="avr32_ap"
4451             cpuflags="-mpart=$cpu"
4452         ;;
4453         ap)
4454             subarch="avr32_ap"
4455             cpuflags="-march=$cpu"
4456         ;;
4457         uc3[ab]*)
4458             subarch="avr32_uc"
4459             cpuflags="-mcpu=$cpu"
4460         ;;
4461         uc)
4462             subarch="avr32_uc"
4463             cpuflags="-march=$cpu"
4464         ;;
4465     esac
4466
4467 elif enabled bfin; then
4468
4469     cpuflags="-mcpu=$cpu"
4470
4471 elif enabled mips; then
4472
4473     cpuflags="-march=$cpu"
4474
4475     if [ "$cpu" != "generic" ]; then
4476         disable mips32r2
4477         disable mips32r5
4478         disable mips64r2
4479         disable mips32r6
4480         disable mips64r6
4481         disable loongson2
4482         disable loongson3
4483
4484         case $cpu in
4485             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4486                 enable mips32r2
4487                 disable msa
4488             ;;
4489             p5600|i6400|p6600)
4490                 disable mipsdsp
4491                 disable mipsdspr2
4492             ;;
4493             loongson*)
4494                 enable loongson2
4495                 enable loongson3
4496                 enable local_aligned_8 local_aligned_16 local_aligned_32
4497                 enable simd_align_16
4498                 enable fast_64bit
4499                 enable fast_clz
4500                 enable fast_cmov
4501                 enable fast_unaligned
4502                 disable aligned_stack
4503                 disable mipsfpu
4504                 disable mipsdsp
4505                 disable mipsdspr2
4506                 case $cpu in
4507                     loongson3*)
4508                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4509                     ;;
4510                     loongson2e)
4511                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4512                     ;;
4513                     loongson2f)
4514                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4515                     ;;
4516                 esac
4517             ;;
4518             *)
4519                 # Unknown CPU. Disable everything.
4520                 warn "unknown CPU. Disabling all MIPS optimizations."
4521                 disable mipsfpu
4522                 disable mipsdsp
4523                 disable mipsdspr2
4524                 disable msa
4525                 disable mmi
4526             ;;
4527         esac
4528
4529         case $cpu in
4530             24kc)
4531                 disable mipsfpu
4532                 disable mipsdsp
4533                 disable mipsdspr2
4534             ;;
4535             24kf*)
4536                 disable mipsdsp
4537                 disable mipsdspr2
4538             ;;
4539             24kec|34kc|1004kc)
4540                 disable mipsfpu
4541                 disable mipsdspr2
4542             ;;
4543             24kef*|34kf*|1004kf*)
4544                 disable mipsdspr2
4545             ;;
4546             74kc)
4547                 disable mipsfpu
4548             ;;
4549             p5600)
4550                 enable mips32r5
4551                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4552             ;;
4553             i6400)
4554                 enable mips64r6
4555                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4556             ;;
4557             p6600)
4558                 enable mips64r6
4559                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4560             ;;
4561         esac
4562     else
4563         # We do not disable anything. Is up to the user to disable the unwanted features.
4564         warn 'generic cpu selected'
4565     fi
4566
4567 elif enabled ppc; then
4568
4569     disable ldbrx
4570
4571     case $(tolower $cpu) in
4572         601|ppc601|powerpc601)
4573             cpuflags="-mcpu=601"
4574             disable altivec
4575         ;;
4576         603*|ppc603*|powerpc603*)
4577             cpuflags="-mcpu=603"
4578             disable altivec
4579         ;;
4580         604*|ppc604*|powerpc604*)
4581             cpuflags="-mcpu=604"
4582             disable altivec
4583         ;;
4584         g3|75*|ppc75*|powerpc75*)
4585             cpuflags="-mcpu=750"
4586             disable altivec
4587         ;;
4588         g4|745*|ppc745*|powerpc745*)
4589             cpuflags="-mcpu=7450"
4590             disable vsx
4591         ;;
4592         74*|ppc74*|powerpc74*)
4593             cpuflags="-mcpu=7400"
4594             disable vsx
4595         ;;
4596         g5|970|ppc970|powerpc970)
4597             cpuflags="-mcpu=970"
4598             disable vsx
4599         ;;
4600         power[3-6]*)
4601             cpuflags="-mcpu=$cpu"
4602             disable vsx
4603         ;;
4604         power[7-8]*)
4605             cpuflags="-mcpu=$cpu"
4606         ;;
4607         cell)
4608             cpuflags="-mcpu=cell"
4609             enable ldbrx
4610             disable vsx
4611         ;;
4612         e500mc)
4613             cpuflags="-mcpu=e500mc"
4614             disable altivec
4615         ;;
4616         e500v2)
4617             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4618             disable altivec
4619             disable dcbzl
4620         ;;
4621         e500)
4622             cpuflags="-mcpu=8540 -mhard-float"
4623             disable altivec
4624             disable dcbzl
4625         ;;
4626     esac
4627
4628 elif enabled sparc; then
4629
4630     case $cpu in
4631         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4632             cpuflags="-mcpu=$cpu"
4633         ;;
4634         ultrasparc*|niagara[234])
4635             cpuflags="-mcpu=$cpu"
4636         ;;
4637     esac
4638
4639 elif enabled x86; then
4640
4641     case $cpu in
4642         i[345]86|pentium)
4643             cpuflags="-march=$cpu"
4644             disable i686
4645             disable mmx
4646         ;;
4647         # targets that do NOT support nopl and conditional mov (cmov)
4648         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4649             cpuflags="-march=$cpu"
4650             disable i686
4651         ;;
4652         # targets that do support nopl and conditional mov (cmov)
4653         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4654         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4655         |amdfam10|barcelona|b[dt]ver*|znver*)
4656             cpuflags="-march=$cpu"
4657             enable i686
4658             enable fast_cmov
4659         ;;
4660         # targets that do support conditional mov but on which it's slow
4661         pentium4|pentium4m|prescott|nocona)
4662             cpuflags="-march=$cpu"
4663             enable i686
4664             disable fast_cmov
4665         ;;
4666     esac
4667
4668 fi
4669
4670 if [ "$cpu" != generic ]; then
4671     add_cflags  $cpuflags
4672     add_asflags $cpuflags
4673     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4674 fi
4675
4676 # compiler sanity check
4677 check_exec <<EOF
4678 int main(void){ return 0; }
4679 EOF
4680 if test "$?" != 0; then
4681     echo "$cc is unable to create an executable file."
4682     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4683         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4684         echo "Only do this if you know what cross compiling means."
4685     fi
4686     die "C compiler test failed."
4687 fi
4688
4689 add_cppflags -D_ISOC99_SOURCE
4690 add_cxxflags -D__STDC_CONSTANT_MACROS
4691 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4692
4693 # some compilers silently accept -std=c11, so we also need to check that the
4694 # version macro is defined properly
4695 if test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L"; then
4696     add_cflags -std=c11
4697 else
4698     check_cflags -std=c99
4699 fi
4700
4701 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4702 #include <stdlib.h>
4703 EOF
4704 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4705 #include <stdlib.h>
4706 EOF
4707
4708 add_host_cppflags -D_ISOC99_SOURCE
4709 check_host_cflags -std=c99
4710 check_host_cflags -Wall
4711 check_host_cflags -O3
4712
4713 check_64bit(){
4714     arch32=$1
4715     arch64=$2
4716     expr=$3
4717     check_code cc "" "int test[2*($expr) - 1]" &&
4718         subarch=$arch64 || subarch=$arch32
4719 }
4720
4721 case "$arch" in
4722     aarch64|alpha|ia64)
4723         spic=$shared
4724     ;;
4725     mips)
4726         check_64bit mips mips64 '_MIPS_SIM > 1'
4727         spic=$shared
4728     ;;
4729     parisc)
4730         check_64bit parisc parisc64 'sizeof(void *) > 4'
4731         spic=$shared
4732     ;;
4733     ppc)
4734         check_64bit ppc ppc64 'sizeof(void *) > 4'
4735         spic=$shared
4736     ;;
4737     s390)
4738         check_64bit s390 s390x 'sizeof(void *) > 4'
4739         spic=$shared
4740     ;;
4741     sparc)
4742         check_64bit sparc sparc64 'sizeof(void *) > 4'
4743         spic=$shared
4744     ;;
4745     x86)
4746         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4747         # Treat x32 as x64 for now. Note it also needs spic=$shared
4748         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4749             subarch=x86_64
4750         if test "$subarch" = "x86_64"; then
4751             spic=$shared
4752         fi
4753     ;;
4754     ppc)
4755         check_cc <<EOF && subarch="ppc64"
4756         int test[(int)sizeof(char*) - 7];
4757 EOF
4758     ;;
4759 esac
4760
4761 enable $subarch
4762 enabled spic && enable_weak pic
4763
4764 # OS specific
4765 case $target_os in
4766     aix)
4767         SHFLAGS=-shared
4768         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4769         enabled shared && add_ldflags -Wl,-brtl
4770         ;;
4771     android)
4772         disable symver
4773         enable section_data_rel_ro
4774         SLIB_INSTALL_NAME='$(SLIBNAME)'
4775         SLIB_INSTALL_LINKS=
4776         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4777         ;;
4778     haiku)
4779         prefix_default="/boot/common"
4780         network_extralibs="-lnetwork"
4781         host_extralibs=
4782         ;;
4783     sunos)
4784         SHFLAGS='-shared -Wl,-h,$$(@F)'
4785         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4786         network_extralibs="-lsocket -lnsl"
4787         add_cppflags -D__EXTENSIONS__
4788         # When using suncc to build, the Solaris linker will mark
4789         # an executable with each instruction set encountered by
4790         # the Solaris assembler.  As our libraries contain their own
4791         # guards for processor-specific code, instead suppress
4792         # generation of the HWCAPS ELF section on Solaris x86 only.
4793         enabled_all suncc x86 &&
4794             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4795             add_ldflags -Wl,-M,mapfile
4796         nm_default='nm -P -g'
4797         version_script='-M'
4798         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
4799         ;;
4800     netbsd)
4801         disable symver
4802         oss_indev_extralibs="-lossaudio"
4803         oss_outdev_extralibs="-lossaudio"
4804         enabled gcc || check_ldflags -Wl,-zmuldefs
4805         ;;
4806     openbsd|bitrig)
4807         disable symver
4808         SHFLAGS='-shared'
4809         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4810         SLIB_INSTALL_LINKS=
4811         oss_indev_extralibs="-lossaudio"
4812         oss_outdev_extralibs="-lossaudio"
4813         ;;
4814     dragonfly)
4815         disable symver
4816         ;;
4817     freebsd)
4818         ;;
4819     bsd/os)
4820         add_extralibs -lpoll -lgnugetopt
4821         strip="strip -d"
4822         ;;
4823     darwin)
4824         enabled ppc && add_asflags -force_cpusubtype_ALL
4825         install_name_dir_default='$(SHLIBDIR)'
4826         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4827         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4828         strip="${strip} -x"
4829         add_ldflags -Wl,-dynamic,-search_paths_first
4830         SLIBSUF=".dylib"
4831         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4832         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4833         objformat="macho"
4834         enabled x86_64 && objformat="macho64"
4835         enabled_any pic shared x86_64 ||
4836             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4837         check_header dispatch/dispatch.h &&
4838             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
4839         version_script='-exported_symbols_list'
4840         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
4841         ;;
4842     msys*)
4843         die "Native MSYS builds are discouraged, please use the MINGW environment."
4844         ;;
4845     mingw32*|mingw64*)
4846         if test $target_os = "mingw32ce"; then
4847             disable network
4848         else
4849             target_os=mingw32
4850         fi
4851         decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
4852         decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
4853         LIBTARGET=i386
4854         if enabled x86_64; then
4855             LIBTARGET="i386:x86-64"
4856         elif enabled arm; then
4857             LIBTARGET=arm-wince
4858         fi
4859         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4860         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4861         shlibdir_default="$bindir_default"
4862         SLIBPREF=""
4863         SLIBSUF=".dll"
4864         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4865         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4866         dlltool="${cross_prefix}dlltool"
4867         if check_cmd lib.exe -list; then
4868             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4869             if enabled x86_64; then
4870                 LIBTARGET=x64
4871             fi
4872         elif check_cmd $dlltool --version; then
4873             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4874         fi
4875         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4876         SLIB_INSTALL_LINKS=
4877         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4878         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4879         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--disable-auto-image-base'
4880         objformat="win32"
4881         ranlib=:
4882         enable dos_paths
4883         check_ldflags -Wl,--nxcompat,--dynamicbase
4884         # Lets work around some stupidity in binutils.
4885         # ld will strip relocations from executables even though we need them
4886         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4887         # however ld then forgets what the entry point should be (oops) so we
4888         # have to manually (re)set it.
4889         if enabled x86_32; then
4890             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
4891         elif enabled x86_64; then
4892             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
4893             check_ldflags -Wl,--high-entropy-va # binutils 2.25
4894             # Set image base >4GB for extra entropy with HEASLR
4895             add_ldexeflags -Wl,--image-base,0x140000000
4896             append SHFLAGS -Wl,--image-base,0x180000000
4897         fi
4898         ;;
4899     win32|win64)
4900         disable symver
4901         if enabled shared; then
4902             # Link to the import library instead of the normal static library
4903             # for shared libs.
4904             LD_LIB='%.lib'
4905             # Cannot build both shared and static libs with MSVC or icl.
4906             disable static
4907         fi
4908         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4909         shlibdir_default="$bindir_default"
4910         SLIBPREF=""
4911         SLIBSUF=".dll"
4912         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4913         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4914         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4915         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4916         SLIB_INSTALL_LINKS=
4917         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4918         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4919         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4920         objformat="win32"
4921         ranlib=:
4922         enable dos_paths
4923         ;;
4924     cygwin*)
4925         target_os=cygwin
4926         shlibdir_default="$bindir_default"
4927         SLIBPREF="cyg"
4928         SLIBSUF=".dll"
4929         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4930         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4931         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4932         SLIB_INSTALL_LINKS=
4933         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4934         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4935         objformat="win32"
4936         enable dos_paths
4937         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4938         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4939         ;;
4940     *-dos|freedos|opendos)
4941         network_extralibs="-lsocket"
4942         objformat="coff"
4943         enable dos_paths
4944         add_cppflags -U__STRICT_ANSI__
4945         ;;
4946     linux)
4947         enable dv1394
4948         enable section_data_rel_ro
4949         ;;
4950     irix*)
4951         target_os=irix
4952         ranlib="echo ignoring ranlib"
4953         ;;
4954     os/2*)
4955         strip="lxlite -CS"
4956         objformat="aout"
4957         add_cppflags -D_GNU_SOURCE
4958         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4959         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4960         LIBSUF="_s.a"
4961         SLIBPREF=""
4962         SLIBSUF=".dll"
4963         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4964         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4965         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
4966             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
4967             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
4968             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
4969             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
4970         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
4971             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
4972         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4973         SLIB_INSTALL_LINKS=
4974         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
4975         enable dos_paths
4976         enable_weak os2threads
4977         ;;
4978     gnu/kfreebsd)
4979         add_cppflags -D_BSD_SOURCE
4980         ;;
4981     gnu)
4982         ;;
4983     qnx)
4984         add_cppflags -D_QNX_SOURCE
4985         network_extralibs="-lsocket"
4986         ;;
4987     symbian)
4988         SLIBSUF=".dll"
4989         enable dos_paths
4990         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4991         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4992         add_ldflags -Wl,--target1-abs,--no-undefined \
4993                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4994                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4995         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4996                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4997                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4998         ;;
4999     osf1)
5000         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
5001         ;;
5002     minix)
5003         ;;
5004     none)
5005         ;;
5006     *)
5007         die "Unknown OS '$target_os'."
5008         ;;
5009 esac
5010
5011 # test if creating links works
5012 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5013 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5014 mkdir "$link_dest"
5015 $ln_s "$link_dest" "$link_name"
5016 touch "$link_dest/test_file"
5017 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5018     # create link to source path
5019     [ -e src ] && rm src
5020     $ln_s "$source_path" src
5021     source_link=src
5022 else
5023     # creating directory links doesn't work
5024     # fall back to using the full source path
5025     source_link="$source_path"
5026 fi
5027 # cleanup
5028 rm -r "$link_dest"
5029 rm -r "$link_name"
5030
5031 # determine libc flavour
5032
5033 probe_libc(){
5034     pfx=$1
5035     pfx_no_=${pfx%_}
5036     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5037     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5038         eval ${pfx}libc_type=uclibc
5039         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5040     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5041         eval ${pfx}libc_type=glibc
5042         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5043     # MinGW headers can be installed on Cygwin, so check for newlib first.
5044     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5045         eval ${pfx}libc_type=newlib
5046         add_${pfx}cppflags -U__STRICT_ANSI__
5047     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5048     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5049         eval ${pfx}libc_type=mingw64
5050         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5051             add_compat msvcrt/snprintf.o
5052             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5053         fi
5054         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5055         eval test \$${pfx_no_}cc_type = "gcc" &&
5056             add_${pfx}cppflags -D__printf__=__gnu_printf__
5057     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5058          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5059         eval ${pfx}libc_type=mingw32
5060         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5061             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5062             die "ERROR: MinGW32 runtime version must be >= 3.15."
5063         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5064         check_${pfx}cpp_condition _mingw.h "defined(_WIN32_WINNT) && _WIN32_WINNT >= 0x0502" ||
5065             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
5066         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700__" &&
5067             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5068         eval test \$${pfx_no_}cc_type = "gcc" &&
5069             add_${pfx}cppflags -D__printf__=__gnu_printf__
5070     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5071         eval ${pfx}libc_type=msvcrt
5072         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5073             if [ "$pfx" = host_ ]; then
5074                 add_host_cppflags -Dsnprintf=_snprintf
5075             else
5076                 add_compat strtod.o strtod=avpriv_strtod
5077                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5078                                              _snprintf=avpriv_snprintf  \
5079                                              vsnprintf=avpriv_vsnprintf
5080             fi
5081         fi
5082         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5083         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5084         # 0x601 by default unless something else is set by the user.
5085         # This can easily lead to us detecting functions only present
5086         # in such new versions and producing binaries requiring windows 7.0.
5087         # Therefore explicitly set the default to XP unless the user has
5088         # set something else on the command line.
5089         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5090         # family. For these cases, configure is free to use any functions
5091         # found in the SDK headers by default. (Alternatively, we could force
5092         # _WIN32_WINNT to 0x0602 in that case.)
5093         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5094             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
5095 #ifdef WINAPI_FAMILY
5096 #include <winapifamily.h>
5097 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5098 #error not desktop
5099 #endif
5100 #endif
5101 EOF
5102         if [ "$pfx" = "" ]; then
5103             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5104             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5105         fi
5106     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5107         eval ${pfx}libc_type=klibc
5108     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5109         eval ${pfx}libc_type=bionic
5110     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5111         eval ${pfx}libc_type=solaris
5112         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5113     fi
5114     check_${pfx}cc <<EOF
5115 #include <time.h>
5116 void *v = localtime_r;
5117 EOF
5118 test "$?" != 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
5119 #include <time.h>
5120 void *v = localtime_r;
5121 EOF
5122
5123 }
5124
5125 probe_libc
5126 test -n "$libc_type" && enable libc_$libc_type
5127 probe_libc host_
5128 test -n "$host_libc_type" && enable host_libc_$host_libc_type
5129
5130 case $libc_type in
5131     bionic)
5132         add_compat strtod.o strtod=avpriv_strtod
5133         ;;
5134 esac
5135
5136 # hacks for compiler/libc/os combinations
5137
5138 if enabled_all tms470 libc_glibc; then
5139     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
5140     add_cppflags -D__USER_LABEL_PREFIX__=
5141     add_cppflags -D__builtin_memset=memset
5142     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
5143     add_cflags   -pds=48    # incompatible redefinition of macro
5144 fi
5145
5146 if enabled_all ccc libc_glibc; then
5147     add_ldflags -Wl,-z,now  # calls to libots crash without this
5148 fi
5149
5150 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5151     add_cppflags '-I\$(SRC_PATH)/compat/float'
5152
5153 esc(){
5154     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
5155 }
5156
5157 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
5158
5159 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5160
5161 set_default libdir
5162 : ${shlibdir_default:="$libdir"}
5163 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5164
5165 set_default $PATHS_LIST
5166 set_default nm
5167
5168 # we need to build at least one lib type
5169 if ! enabled_any static shared; then
5170     cat <<EOF
5171 At least one library type must be built.
5172 Specify --enable-static to build the static libraries or --enable-shared to
5173 build the shared libraries as well. To only build the shared libraries specify
5174 --disable-static in addition to --enable-shared.
5175 EOF
5176     exit 1
5177 fi
5178
5179 disabled optimizations || check_cflags -fomit-frame-pointer
5180
5181 enable_weak_pic() {
5182     disabled pic && return
5183     enable pic
5184     add_cppflags -DPIC
5185     case "$target_os" in
5186     mingw*|cygwin*)
5187         ;;
5188     *)
5189         add_cflags -fPIC
5190         ;;
5191     esac
5192     add_asflags  -fPIC
5193 }
5194
5195 enabled pic && enable_weak_pic
5196
5197 check_cc <<EOF || die "Symbol mangling check failed."
5198 int ff_extern;
5199 EOF
5200 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5201 extern_prefix=${sym%%ff_extern*}
5202
5203 check_cc <<EOF && enable_weak inline_asm
5204 void foo(void) { __asm__ volatile ("" ::); }
5205 EOF
5206
5207 _restrict=
5208 for restrict_keyword in restrict __restrict__ __restrict; do
5209     check_cc <<EOF && _restrict=$restrict_keyword && break
5210 void foo(char * $restrict_keyword p);
5211 EOF
5212 done
5213
5214 check_cc <<EOF && enable pragma_deprecated
5215 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
5216 EOF
5217
5218 check_cc <<EOF && enable attribute_packed
5219 struct { int x; } __attribute__((packed)) x;
5220 EOF
5221
5222 check_cc <<EOF && enable attribute_may_alias
5223 union { int x; } __attribute__((may_alias)) x;
5224 EOF
5225
5226 check_cc <<EOF || die "endian test failed"
5227 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5228 EOF
5229 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5230
5231 if ! enabled ppc64 || enabled bigendian; then
5232     disable vsx
5233 fi
5234
5235 check_gas() {
5236     log "check_gas using '$as' as AS"
5237     # :vararg is used on aarch64, arm and ppc altivec
5238     check_as <<EOF || return 1
5239 .macro m n, y:vararg=0
5240 \n: .int \y
5241 .endm
5242 m x
5243 EOF
5244     # .altmacro is only used in arm asm
5245     ! enabled arm || check_as <<EOF || return 1
5246 .altmacro
5247 EOF
5248     enable gnu_as
5249     return 0
5250 }
5251
5252 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5253     nogas=:
5254     enabled_any arm aarch64 && nogas=die
5255     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5256     as_noop=-v
5257
5258     case $as_type in
5259         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5260         gcc)  gaspp_as_type=gas ;;
5261         *)    gaspp_as_type=$as_type ;;
5262     esac
5263
5264     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5265
5266     test "${as#*gas-preprocessor.pl}" != "$as" ||
5267     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5268         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5269
5270     if ! check_gas ; then
5271         as=${gas:=$as}
5272         check_gas || \
5273             $nogas "GNU assembler not found, install/update gas-preprocessor"
5274     fi
5275
5276     check_as <<EOF && enable as_func
5277 .func test
5278 .endfunc
5279 EOF
5280 fi
5281
5282 check_inline_asm inline_asm_labels '"1:\n"'
5283
5284 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5285
5286 if enabled aarch64; then
5287     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5288     # internal assembler in clang 3.3 does not support this instruction
5289     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5290     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5291
5292     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5293
5294 elif enabled alpha; then
5295
5296     check_cflags -mieee
5297
5298 elif enabled arm; then
5299
5300     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
5301
5302     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
5303 float func(float a, float b){ return a+b; }
5304 EOF
5305
5306     enabled thumb && check_cflags -mthumb || check_cflags -marm
5307
5308     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
5309         enable vfp_args
5310     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5311         enable vfp_args
5312     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5313         case "${cross_prefix:-$cc}" in
5314             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
5315             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
5316 __asm__ (".eabi_attribute 28, 1");
5317 int main(void) { return 0; }
5318 EOF
5319         esac
5320         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5321     fi
5322
5323     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5324     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5325     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5326     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5327     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5328     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5329     enabled setend  && check_insn setend  'setend be'
5330
5331     [ $target_os = linux ] || [ $target_os = android ] ||
5332         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5333             $ARCH_EXT_LIST_ARM
5334
5335     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5336
5337     check_as <<EOF && enable as_dn_directive
5338 ra .dn d0.i16
5339 .unreq ra
5340 EOF
5341     check_as <<EOF && enable as_fpu_directive
5342 .fpu neon
5343 EOF
5344
5345     # llvm's integrated assembler supports .object_arch from llvm 3.5
5346     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
5347 .object_arch armv4
5348 EOF
5349
5350     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5351
5352 elif enabled mips; then
5353
5354     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5355     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5356     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5357
5358     # Enable minimum ISA based on selected options
5359     if enabled mips64; then
5360         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5361         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5362         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5363     else
5364         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5365         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5366         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5367         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5368     fi
5369
5370     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5371     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5372     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
5373     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5374     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5375
5376 elif enabled parisc; then
5377
5378     if enabled gcc; then
5379         case $($cc -dumpversion) in
5380             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5381         esac
5382     fi
5383
5384 elif enabled ppc; then
5385
5386     enable local_aligned_8 local_aligned_16 local_aligned_32
5387
5388     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5389     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5390     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5391     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5392
5393     # AltiVec flags: The FSF version of GCC differs from the Apple version
5394     if enabled altivec; then
5395         check_cflags -maltivec -mabi=altivec &&
5396         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
5397         check_cflags -faltivec
5398
5399         # check if our compiler supports Motorola AltiVec C API
5400         check_cc <<EOF || disable altivec
5401 $inc_altivec_h
5402 int main(void) {
5403     vector signed int v1 = (vector signed int) { 0 };
5404     vector signed int v2 = (vector signed int) { 1 };
5405     v1 = vec_add(v1, v2);
5406     return 0;
5407 }
5408 EOF
5409
5410         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5411     fi
5412
5413     if enabled vsx; then
5414         check_cflags -mvsx &&
5415         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
5416     fi
5417
5418     if enabled power8; then
5419         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
5420     fi
5421
5422 elif enabled x86; then
5423
5424     check_builtin rdtsc    intrin.h   "__rdtsc()"
5425     check_builtin mm_empty mmintrin.h "_mm_empty()"
5426
5427     enable local_aligned_8 local_aligned_16 local_aligned_32
5428
5429     # check whether EBP is available on x86
5430     # As 'i' is stored on the stack, this program will crash
5431     # if the base pointer is used to access it because the
5432     # base pointer is cleared in the inline assembly code.
5433     check_exec_crash <<EOF && enable ebp_available
5434 volatile int i=0;
5435 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5436 return i;
5437 EOF
5438
5439     # check whether EBX is available on x86
5440     check_inline_asm ebx_available '""::"b"(0)' &&
5441         check_inline_asm ebx_available '"":::"%ebx"'
5442
5443     # check whether xmm clobbers are supported
5444     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5445
5446     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5447         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5448
5449     # check whether binutils is new enough to compile SSSE3/MMXEXT
5450     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5451     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5452
5453     if ! disabled_any asm mmx yasm; then
5454         if check_cmd $yasmexe --version; then
5455             enabled x86_64 && yasm_extra="-m amd64"
5456             yasm_debug="-g dwarf2"
5457         elif check_cmd nasm -v; then
5458             yasmexe=nasm
5459             yasm_debug="-g -F dwarf"
5460             if enabled x86_64; then
5461                 case "$objformat" in
5462                     elf)   objformat=elf64 ;;
5463                     win32) objformat=win64 ;;
5464                 esac
5465             fi
5466         fi
5467
5468         YASMFLAGS="-f $objformat $yasm_extra"
5469         enabled pic               && append YASMFLAGS "-DPIC"
5470         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
5471         case "$objformat" in
5472             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
5473         esac
5474
5475         check_yasm "movbe ecx, [5]" && enable yasm ||
5476             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
5477         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
5478         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
5479         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
5480         check_yasm "CPU amdnop" || disable cpunop
5481     fi
5482
5483     case "$cpu" in
5484         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5485             disable fast_clz
5486         ;;
5487     esac
5488
5489 fi
5490
5491 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
5492
5493 check_ldflags -Wl,--as-needed
5494 check_ldflags -Wl,-z,noexecstack
5495
5496 if check_func dlopen && check_func dlsym; then
5497     ldl=
5498 elif check_func dlopen -ldl && check_func dlsym -ldl; then
5499     ldl=-ldl
5500 fi
5501
5502 avisynth_demuxer_extralibs='$ldl'
5503 cuda_extralibs='$ldl'
5504 decklink_outdev_extralibs="$decklink_outdev_extralibs $ldl"
5505 decklink_indev_extralibs="$decklink_indev_extralibs $ldl"
5506 frei0r_filter_extralibs='$ldl'
5507 frei0r_src_filter_extralibs='$ldl'
5508 ladspa_filter_extralibs='$ldl'
5509 nvenc_extralibs='$ldl'
5510 coreimage_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5511 coreimagesrc_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5512
5513 if ! disabled network; then
5514     check_func getaddrinfo $network_extralibs
5515     check_func inet_aton $network_extralibs
5516
5517     check_type netdb.h "struct addrinfo"
5518     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5519     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5520     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5521     check_type poll.h "struct pollfd"
5522     check_type netinet/sctp.h "struct sctp_event_subscribe"
5523     check_struct "sys/socket.h" "struct msghdr" msg_flags
5524     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5525     check_type netinet/in.h "struct sockaddr_in6"
5526     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5527     check_type "sys/types.h sys/socket.h" socklen_t
5528
5529     # Prefer arpa/inet.h over winsock2
5530     if check_header arpa/inet.h ; then
5531         check_func closesocket
5532     elif check_header winsock2.h ; then
5533         check_func_headers winsock2.h closesocket -lws2 &&
5534             network_extralibs="-lws2" ||
5535         { check_func_headers winsock2.h closesocket -lws2_32 &&
5536             network_extralibs="-lws2_32"; } || disable winsock2_h network
5537         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5538
5539         check_type ws2tcpip.h socklen_t
5540         check_type ws2tcpip.h "struct addrinfo"
5541         check_type ws2tcpip.h "struct group_source_req"
5542         check_type ws2tcpip.h "struct ip_mreq_source"
5543         check_type ws2tcpip.h "struct ipv6_mreq"
5544         check_type winsock2.h "struct pollfd"
5545         check_struct winsock2.h "struct sockaddr" sa_len
5546         check_type ws2tcpip.h "struct sockaddr_in6"
5547         check_type ws2tcpip.h "struct sockaddr_storage"
5548     else
5549         disable network
5550     fi
5551 fi
5552
5553 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5554 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5555 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5556 check_builtin sarestart signal.h "SA_RESTART"
5557 check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" -lpthread
5558 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5559 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5560 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5561 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5562
5563 case "$custom_allocator" in
5564     jemalloc)
5565         # jemalloc by default does not use a prefix
5566         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5567     ;;
5568     tcmalloc)
5569         require_pkg_config libtcmalloc gperftools/tcmalloc.h tc_malloc
5570         malloc_prefix=tc_
5571     ;;
5572 esac
5573
5574 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5575 check_func  ${malloc_prefix}memalign            && enable memalign
5576 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5577
5578 check_func  access
5579 check_func_headers stdlib.h arc4random
5580 check_func_headers time.h clock_gettime ||
5581     { check_lib time.h clock_gettime -lrt && LIBRT="-lrt"; }
5582 check_func  fcntl
5583 check_func  fork
5584 check_func  gethrtime
5585 check_func  getopt
5586 check_func  getrusage
5587 check_func  gettimeofday
5588 check_func  isatty
5589 check_func  mach_absolute_time
5590 check_func  mkstemp
5591 check_func  mmap
5592 check_func  mprotect
5593 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5594 check_func_headers time.h nanosleep ||
5595     { check_lib time.h nanosleep -lrt && LIBRT="-lrt"; }
5596 check_func  sched_getaffinity
5597 check_func  setrlimit
5598 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5599 check_func  strerror_r
5600 check_func  sysconf
5601 check_func  sysctl
5602 check_func  usleep
5603
5604 check_func_headers conio.h kbhit
5605 check_func_headers io.h setmode
5606 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5607 check_func_headers stdlib.h getenv
5608 check_func_headers sys/stat.h lstat
5609
5610 check_func_headers windows.h CoTaskMemFree -lole32
5611 check_func_headers windows.h GetProcessAffinityMask
5612 check_func_headers windows.h GetProcessTimes
5613 check_func_headers windows.h GetSystemTimeAsFileTime
5614 check_func_headers windows.h LoadLibrary
5615 check_func_headers windows.h MapViewOfFile
5616 check_func_headers windows.h PeekNamedPipe
5617 check_func_headers windows.h SetConsoleTextAttribute
5618 check_func_headers windows.h SetConsoleCtrlHandler
5619 check_func_headers windows.h Sleep
5620 check_func_headers windows.h VirtualAlloc
5621 check_struct windows.h "CONDITION_VARIABLE" Ptr
5622 check_func_headers glob.h glob
5623 enabled xlib &&
5624     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5625
5626 check_header AudioToolbox/AudioToolbox.h
5627 check_header direct.h
5628 check_header dirent.h
5629 check_header dlfcn.h
5630 check_header d3d11.h
5631 check_header dxva.h
5632 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5633 check_header io.h
5634 check_header libcrystalhd/libcrystalhd_if.h
5635 check_header mach/mach_time.h
5636 check_header malloc.h
5637 check_header net/udplite.h
5638 check_header poll.h
5639 check_header sys/mman.h
5640 check_header sys/param.h
5641 check_header sys/resource.h
5642 check_header sys/select.h
5643 check_header sys/time.h
5644 check_header sys/un.h
5645 check_header termios.h
5646 check_header unistd.h
5647 check_header valgrind/valgrind.h
5648 check_header VideoDecodeAcceleration/VDADecoder.h
5649 check_header VideoToolbox/VideoToolbox.h
5650 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5651 enabled videotoolbox && check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferColorPrimaries_ITU_R_2020 -framework CoreVideo
5652 check_header windows.h
5653 check_header X11/extensions/XvMClib.h
5654 check_header asm/types.h
5655
5656 # it seems there are versions of clang in some distros that try to use the
5657 # gcc headers, which explodes for stdatomic
5658 # so we also check that atomics actually work here
5659 check_builtin stdatomic_h stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0)"
5660
5661 check_lib "windows.h shellapi.h" CommandLineToArgvW   -lshell32
5662 check_lib "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
5663 check_lib "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
5664
5665 check_lib "CoreServices/CoreServices.h" UTGetOSTypeFromString "-framework CoreServices"
5666
5667 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5668
5669 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5670 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5671 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5672 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5673 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5674
5675 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
5676 check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
5677 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
5678 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
5679 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5680 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5681 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
5682 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
5683
5684 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5685
5686 check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt
5687
5688 if ! disabled w32threads && ! enabled pthreads; then
5689     check_func_headers "windows.h process.h" _beginthreadex &&
5690         enable w32threads || disable w32threads
5691     if ! enabled w32threads && enabled winrt; then
5692         check_func_headers "windows.h" CreateThread &&
5693             enable w32threads || disable w32threads
5694     fi
5695 fi
5696
5697 # check for some common methods of building with pthread support
5698 # do this before the optional library checks as some of them require pthreads
5699 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5700     enable pthreads
5701     if check_func pthread_join -pthread && check_func pthread_create -pthread; then
5702         add_cflags -pthread
5703         add_extralibs -pthread
5704     elif check_func pthread_join -pthreads && check_func pthread_create -pthreads; then
5705         add_cflags -pthreads
5706         add_extralibs -pthreads
5707     elif check_func pthread_join -ldl -pthread && check_func pthread_create -ldl -pthread; then
5708         add_cflags -ldl -pthread
5709         add_extralibs -ldl -pthread
5710     elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
5711         add_extralibs -lpthreadGC2
5712     elif check_lib pthread.h pthread_join -lpthread && check_lib pthread.h pthread_create -lpthread; then
5713         :
5714     elif ! check_func pthread_join && ! check_func pthread_create; then
5715         disable pthreads
5716     fi
5717     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5718 fi
5719
5720
5721 if enabled pthreads; then
5722   check_func pthread_cancel
5723 fi
5724
5725 enabled pthreads &&
5726     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)"
5727
5728 disabled  zlib || check_lib  zlib.h      zlibVersion    -lz    || disable  zlib
5729 disabled bzlib || check_lib bzlib.h BZ2_bzlibVersion    -lbz2  || disable bzlib
5730 disabled  lzma || check_lib  lzma.h lzma_version_number -llzma || disable lzma
5731
5732 check_lib math.h sin -lm && LIBM="-lm"
5733 disabled crystalhd || check_lib "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd || disable crystalhd
5734
5735 atan2f_args=2
5736 copysign_args=2
5737 hypot_args=2
5738 ldexpf_args=2
5739 powf_args=2
5740
5741 for func in $MATH_FUNCS; do
5742     eval check_mathfunc $func \${${func}_args:-1} $LIBM
5743 done
5744
5745 for func in $COMPLEX_FUNCS; do
5746     eval check_complexfunc $func \${${func}_args:-1}
5747 done
5748
5749 # these are off by default, so fail if requested and not available
5750 enabled avfoundation_indev && { check_header_objcc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
5751 enabled avfoundation_indev && { check_lib CoreGraphics/CoreGraphics.h CGGetActiveDisplayList -framework CoreGraphics ||
5752                                 check_lib ApplicationServices/ApplicationServices.h CGGetActiveDisplayList -framework ApplicationServices; }
5753 enabled cuda              && check_header cuda.h # this is not a dependency
5754 enabled cuvid             && { enabled cuda ||
5755                                die "ERROR: CUVID requires CUDA"; }
5756 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5757 enabled coreimage_filter  && { check_header_objcc QuartzCore/CoreImage.h || disable coreimage_filter; }
5758 enabled coreimagesrc_filter && { check_header_objcc QuartzCore/CoreImage.h || disable coreimagesrc_filter; }
5759 enabled decklink          && { { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; } &&
5760                                { check_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a060100" || die "ERROR: Decklink API version must be >= 10.6.1."; } }
5761 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
5762 enabled gmp               && require gmp gmp.h mpz_export -lgmp
5763 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
5764 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads &&
5765                                check_lib "dlfcn.h" dlopen -ldl || die "ERROR: jni not found"; }
5766 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
5767 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5768 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
5769 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
5770 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
5771 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5772                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
5773                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5774 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
5775 enabled libdc1394         && require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new
5776 enabled libfdk_aac        && { use_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5777                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5778                                  warn "using libfdk without pkg-config"; } }
5779 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"
5780 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_libs
5781 enabled fontconfig        && enable libfontconfig
5782 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
5783 enabled libfreetype       && require_libfreetype
5784 enabled libfribidi        && require_pkg_config fribidi fribidi.h fribidi_version_info
5785 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
5786 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5787                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
5788                                done || die "ERROR: libgsm not found"; }
5789 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
5790 enabled libkvazaar        && require_pkg_config "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
5791 enabled libmfx            && require_pkg_config libmfx "mfx/mfxvideo.h" MFXInit
5792 enabled libmodplug        && require_pkg_config libmodplug libmodplug/modplug.h ModPlug_Load
5793 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5794 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
5795 enabled libnpp            && require libnpp npp.h nppGetLibVersion -lnppi -lnppc
5796 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5797 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5798 enabled libopencv         && { check_header opencv2/core/core_c.h &&
5799                                { use_pkg_config opencv opencv2/core/core_c.h cvCreateImageHeader ||
5800                                  require opencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
5801                                require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader; }
5802 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
5803 enabled libopenjpeg       && { { check_lib openjpeg-2.1/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5804                                check_lib openjpeg-2.1/openjpeg.h opj_version -lopenjp2 ||
5805                                { check_lib openjpeg-2.0/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5806                                { check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5807                                { check_lib openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5808                                die "ERROR: libopenjpeg not found"; }
5809 enabled libopenmpt        && require_pkg_config "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create
5810 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
5811 enabled libpulse          && require_pkg_config libpulse pulse/pulseaudio.h pa_context_new
5812 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
5813 enabled librubberband     && require_pkg_config "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new
5814 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
5815 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
5816 enabled libsmbclient      && { use_pkg_config smbclient libsmbclient.h smbc_init ||
5817                                require smbclient libsmbclient.h smbc_init -lsmbclient; }
5818 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy
5819 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr && LIBSOXR="-lsoxr"
5820 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
5821 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
5822 enabled libtesseract      && require_pkg_config tesseract tesseract/capi.h TessBaseAPICreate
5823 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
5824 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
5825                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
5826                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
5827 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
5828 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
5829 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
5830 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
5831
5832 enabled libvpx            && {
5833     enabled libvpx_vp8_decoder && {
5834         use_pkg_config "vpx >= 0.9.1" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
5835             check_lib "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
5836                 die "ERROR: libvpx decoder version must be >=0.9.1";
5837     }
5838     enabled libvpx_vp8_encoder && {
5839         use_pkg_config "vpx >= 0.9.7" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
5840             check_lib "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
5841                 die "ERROR: libvpx encoder version must be >=0.9.7";
5842     }
5843     enabled libvpx_vp9_decoder && {
5844         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
5845             check_lib "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx ||
5846                 disable libvpx_vp9_decoder;
5847     }
5848     enabled libvpx_vp9_encoder && {
5849         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
5850             check_lib "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx ||
5851                 disable libvpx_vp9_encoder;
5852     }
5853     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
5854         die "libvpx enabled but no supported decoders found"
5855     fi
5856 }
5857
5858 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
5859 enabled libwebp           && {
5860     enabled libwebp_encoder      && require_pkg_config "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
5861     enabled libwebp_anim_encoder && { use_pkg_config "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit || disable libwebp_anim_encoder; } }
5862 enabled libx264           && { use_pkg_config x264 "stdint.h x264.h" x264_encoder_encode ||
5863                                { require libx264 "stdint.h x264.h" x264_encoder_encode -lx264 &&
5864                                  warn "using libx264 without pkg-config"; } } &&
5865                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
5866                                die "ERROR: libx264 must be installed and version must be >= 0.118."; } &&
5867                              { check_cpp_condition x264.h "X264_MPEG2" &&
5868                                enable libx262; }
5869 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
5870                              { check_cpp_condition x265.h "X265_BUILD >= 68" ||
5871                                die "ERROR: libx265 version must be >= 68."; }
5872 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode -lxavs
5873 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
5874 enabled libzimg           && require_pkg_config "zimg >= 2.3.0" zimg.h zimg_get_api_version
5875 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
5876 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi &&
5877                              { check_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
5878                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
5879 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
5880 enabled mmal              && { check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
5881                                { ! enabled cross_compile &&
5882                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
5883                                  add_ldflags -L/opt/vc/lib/ &&
5884                                  check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
5885                                die "ERROR: mmal not found" &&
5886                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
5887 enabled netcdf            && require_pkg_config netcdf netcdf.h nc_inq_libvers
5888 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
5889                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
5890                                die "ERROR: openal not found"; } &&
5891                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
5892                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
5893 enabled opencl            && { check_lib OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
5894                                check_lib CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
5895                                die "ERROR: opencl not found"; } &&
5896                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
5897                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
5898                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
5899 enabled opengl            && { check_lib GL/glx.h glXGetProcAddress "-lGL" ||
5900                                check_lib windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
5901                                check_lib OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
5902                                check_lib ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
5903                                die "ERROR: opengl not found."
5904                              }
5905 enabled omx_rpi           && { check_header OMX_Core.h ||
5906                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_header OMX_Core.h ; } ||
5907                                die "ERROR: OpenMAX IL headers not found"; }
5908 enabled omx               && { check_header OMX_Core.h || die "ERROR: OpenMAX IL headers not found"; }
5909 enabled openssl           && { use_pkg_config openssl openssl/ssl.h OPENSSL_init_ssl ||
5910                                use_pkg_config openssl openssl/ssl.h SSL_library_init ||
5911                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
5912                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
5913                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
5914                                die "ERROR: openssl not found"; }
5915 enabled qtkit_indev      && { check_header_objcc QTKit/QTKit.h || disable qtkit_indev; }
5916
5917 if enabled gcrypt; then
5918     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
5919     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
5920         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
5921         gcrypt_libs=$("${GCRYPT_CONFIG}" --libs)
5922         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_libs ||
5923             die "ERROR: gcrypt not found"
5924         add_cflags $gcrypt_cflags && add_extralibs $gcrypt_libs
5925     else
5926         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
5927     fi
5928 fi
5929
5930 disabled sdl && disable sdl2
5931 if ! disabled sdl2; then
5932     SDL2_CONFIG="${cross_prefix}sdl2-config"
5933     if check_pkg_config sdl2 SDL_events.h SDL_PollEvent; then
5934         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
5935         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
5936         check_func SDL_Init $sdl2_libs $sdl2_cflags && enable sdl2
5937     else
5938       if "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
5939         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
5940         sdl2_libs=$("${SDL2_CONFIG}" --libs)
5941         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
5942         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
5943         check_func SDL_Init $sdl2_libs $sdl2_cflags && enable sdl2
5944       fi
5945     fi
5946     if test $target_os = "mingw32"; then
5947         sdl2_libs="$sdl2_libs -mconsole"
5948     fi
5949 fi
5950 enabled sdl2 && enable sdl && add_cflags $sdl2_cflags && add_extralibs $sdl2_libs
5951
5952 disabled securetransport || { check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5953     check_lib "Security/SecureTransport.h Security/Security.h" "SSLCreateContext SecItemImport" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5954     enable securetransport; }
5955
5956 disabled schannel || { check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
5957                        check_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" && enable schannel && add_extralibs -lsecur32; }
5958
5959 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
5960 enabled makeinfo \
5961     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
5962     && enable makeinfo_html || disable makeinfo_html
5963 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
5964 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
5965 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
5966 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
5967
5968 check_header linux/fb.h
5969 check_header linux/videodev.h
5970 check_header linux/videodev2.h
5971 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5972
5973 check_header sys/videoio.h
5974 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5975
5976 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
5977 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
5978 # w32api 3.12 had it defined wrong
5979 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
5980
5981 check_type "dshow.h" IBaseFilter
5982
5983 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
5984 { check_header dev/bktr/ioctl_meteor.h &&
5985   check_header dev/bktr/ioctl_bt848.h; } ||
5986 { check_header machine/ioctl_meteor.h &&
5987   check_header machine/ioctl_bt848.h; } ||
5988 { check_header dev/video/meteor/ioctl_meteor.h &&
5989   check_header dev/video/bktr/ioctl_bt848.h; } ||
5990 check_header dev/ic/bt8xx.h
5991
5992 if check_struct sys/soundcard.h audio_buf_info bytes; then
5993     enable_safe sys/soundcard.h
5994 else
5995     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
5996     #include <sys/soundcard.h>
5997     audio_buf_info abc;
5998 EOF
5999 fi
6000 check_header soundcard.h
6001
6002 enabled_any alsa_indev alsa_outdev &&
6003     check_lib alsa/asoundlib.h snd_pcm_htimestamp -lasound && enable alsa
6004
6005 enabled jack_indev && check_lib jack/jack.h jack_client_open -ljack && enable jack &&
6006     check_func jack_port_get_latency_range -ljack
6007
6008 enabled_any sndio_indev sndio_outdev && check_lib sndio.h sio_open -lsndio && enable sndio
6009
6010 if enabled libcdio; then
6011     check_lib "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6012     check_lib "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6013     die "ERROR: No usable libcdio/cdparanoia found"
6014 fi
6015
6016 if ! disabled libxcb; then
6017     check_pkg_config "xcb >= 1.4" xcb/xcb.h xcb_connect || {
6018         enabled libxcb && die "ERROR: libxcb >= 1.4 not found";
6019     } && enable libxcb
6020
6021 if enabled libxcb; then
6022     disabled libxcb_shm || {
6023         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
6024             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
6025         } && check_header sys/shm.h && enable libxcb_shm; }
6026
6027     disabled libxcb_xfixes || {
6028         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
6029             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
6030         } && enable libxcb_xfixes; }
6031
6032     disabled libxcb_shape || {
6033         check_pkg_config xcb-shape xcb/shape.h xcb_shape_get_rectangles || {
6034             enabled libxcb_shape && die "ERROR: libxcb_shape not found";
6035         } && enable libxcb_shape; }
6036
6037     add_cflags $xcb_cflags $xcb_shm_cflags $xcb_xfixes_cflags $xcb_shape_cflags
6038     add_extralibs $xcb_libs $xcb_shm_libs $xcb_xfixes_libs $xcb_shape_libs
6039 fi
6040 fi
6041
6042 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6043
6044 enabled dxva2api_h &&
6045     check_cc <<EOF && enable dxva2api_cobj
6046 #define _WIN32_WINNT 0x0600
6047 #define COBJMACROS
6048 #include <windows.h>
6049 #include <d3d9.h>
6050 #include <dxva2api.h>
6051 int main(void) { IDirectXVideoDecoder *o = NULL; IDirectXVideoDecoder_Release(o); return 0; }
6052 EOF
6053
6054 enabled vaapi &&
6055     check_lib va/va.h vaInitialize -lva ||
6056     disable vaapi
6057
6058 enabled vaapi &&
6059     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
6060     disable vaapi
6061
6062 enabled vaapi &&
6063     check_lib "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm &&
6064     enable vaapi_drm
6065
6066 enabled vaapi &&
6067     check_lib "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 -lX11 &&
6068     enable vaapi_x11
6069
6070 enabled vdpau &&
6071     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
6072     disable vdpau
6073
6074 enabled vdpau &&
6075     check_lib "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11 &&
6076     enable vdpau_x11
6077
6078 if enabled x86; then
6079     case $target_os in
6080         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6081             ;;
6082         *)
6083             disable cuda cuvid nvenc
6084             ;;
6085     esac
6086 else
6087     disable cuda cuvid nvenc
6088 fi
6089
6090 enabled nvenc &&
6091     check_cc -I$source_path <<EOF || disable nvenc
6092 #include "compat/nvenc/nvEncodeAPI.h"
6093 NV_ENCODE_API_FUNCTION_LIST flist;
6094 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6095 int main(void) { return 0; }
6096 EOF
6097
6098 # Funny iconv installations are not unusual, so check it after all flags have been set
6099 disabled iconv || check_func_headers iconv.h iconv || check_lib iconv.h iconv -liconv || disable iconv
6100
6101 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6102
6103 # add some useful compiler flags if supported
6104 check_cflags -Wdeclaration-after-statement
6105 check_cflags -Wall
6106 check_cflags -Wdisabled-optimization
6107 check_cflags -Wpointer-arith
6108 check_cflags -Wredundant-decls
6109 check_cflags -Wwrite-strings
6110 check_cflags -Wtype-limits
6111 check_cflags -Wundef
6112 check_cflags -Wmissing-prototypes
6113 check_cflags -Wno-pointer-to-int-cast
6114 check_cflags -Wstrict-prototypes
6115 check_cflags -Wempty-body
6116
6117 if enabled extra_warnings; then
6118     check_cflags -Wcast-qual
6119     check_cflags -Wextra
6120     check_cflags -Wpedantic
6121 fi
6122
6123 check_disable_warning(){
6124     warning_flag=-W${1#-Wno-}
6125     test_cflags $warning_flag && add_cflags $1
6126 }
6127
6128 check_disable_warning -Wno-parentheses
6129 check_disable_warning -Wno-switch
6130 check_disable_warning -Wno-format-zero-length
6131 check_disable_warning -Wno-pointer-sign
6132 check_disable_warning -Wno-unused-const-variable
6133
6134 check_disable_warning_headers(){
6135     warning_flag=-W${1#-Wno-}
6136     test_cflags $warning_flag && add_cflags_headers $1
6137 }
6138
6139 check_disable_warning_headers -Wno-deprecated-declarations
6140 check_disable_warning_headers -Wno-unused-variable
6141
6142 # add some linker flags
6143 check_ldflags -Wl,--warn-common
6144 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6145 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
6146 enabled rpath && add_ldlibflags -Wl,-rpath,$libdir
6147 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6148
6149 # add some strip flags
6150 # -wN '..@*' is more selective than -x, but not available everywhere.
6151 check_stripflags -wN \'..@*\' || check_stripflags -x
6152
6153 enabled neon_clobber_test &&
6154     check_ldflags -Wl,--wrap,avcodec_open2              \
6155                   -Wl,--wrap,avcodec_decode_audio4      \
6156                   -Wl,--wrap,avcodec_decode_video2      \
6157                   -Wl,--wrap,avcodec_decode_subtitle2   \
6158                   -Wl,--wrap,avcodec_encode_audio2      \
6159                   -Wl,--wrap,avcodec_encode_video2      \
6160                   -Wl,--wrap,avcodec_encode_subtitle    \
6161                   -Wl,--wrap,avcodec_send_packet        \
6162                   -Wl,--wrap,avcodec_receive_packet     \
6163                   -Wl,--wrap,avcodec_send_frame         \
6164                   -Wl,--wrap,avcodec_receive_frame      \
6165                   -Wl,--wrap,swr_convert                \
6166                   -Wl,--wrap,avresample_convert ||
6167     disable neon_clobber_test
6168
6169 enabled xmm_clobber_test &&
6170     check_ldflags -Wl,--wrap,avcodec_open2              \
6171                   -Wl,--wrap,avcodec_decode_audio4      \
6172                   -Wl,--wrap,avcodec_decode_video2      \
6173                   -Wl,--wrap,avcodec_decode_subtitle2   \
6174                   -Wl,--wrap,avcodec_encode_audio2      \
6175                   -Wl,--wrap,avcodec_encode_video2      \
6176                   -Wl,--wrap,avcodec_encode_subtitle    \
6177                   -Wl,--wrap,avcodec_send_packet        \
6178                   -Wl,--wrap,avcodec_receive_packet     \
6179                   -Wl,--wrap,avcodec_send_frame         \
6180                   -Wl,--wrap,avcodec_receive_frame      \
6181                   -Wl,--wrap,swr_convert                \
6182                   -Wl,--wrap,avresample_convert         \
6183                   -Wl,--wrap,sws_scale ||
6184     disable xmm_clobber_test
6185
6186 check_ld "cc" <<EOF && enable proper_dce
6187 extern const int array[512];
6188 static inline int func(void) { return array[0]; }
6189 int main(void) { return 0; }
6190 EOF
6191
6192 if enabled proper_dce; then
6193     echo "X { local: *; };" > $TMPV
6194     if test_ldflags -Wl,${version_script},$TMPV; then
6195         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6196         check_cc <<EOF && enable symver_asm_label
6197 void ff_foo(void) __asm__ ("av_foo@VERSION");
6198 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6199 EOF
6200         check_cc <<EOF && enable symver_gnu_asm
6201 __asm__(".symver ff_foo,av_foo@VERSION");
6202 void ff_foo(void) {}
6203 EOF
6204     fi
6205 fi
6206
6207 if [ -z "$optflags" ]; then
6208     if enabled small; then
6209         optflags=$cflags_size
6210     elif enabled optimizations; then
6211         optflags=$cflags_speed
6212     else
6213         optflags=$cflags_noopt
6214     fi
6215 fi
6216
6217 check_optflags(){
6218     check_cflags "$@"
6219     enabled lto && check_ldflags "$@"
6220 }
6221
6222
6223 if enabled lto; then
6224     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6225     check_cflags  -flto
6226     check_ldflags -flto $cpuflags
6227     disable inline_asm_direct_symbol_refs
6228 fi
6229
6230 check_optflags $optflags
6231 check_optflags -fno-math-errno
6232 check_optflags -fno-signed-zeros
6233
6234 enabled ftrapv && check_cflags -ftrapv
6235
6236 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6237 int x;
6238 EOF
6239
6240
6241 if enabled icc; then
6242     # Just warnings, no remarks
6243     check_cflags -w1
6244     # -wd: Disable following warnings
6245     # 144, 167, 556: -Wno-pointer-sign
6246     # 188: enumerated type mixed with another type
6247     # 1292: attribute "foo" ignored
6248     # 1419: external declaration in primary source file
6249     # 10006: ignoring unknown option -fno-signed-zeros
6250     # 10148: ignoring unknown option -Wno-parentheses
6251     # 10156: ignoring option '-W'; no argument required
6252     # 13200: No EMMS instruction before call to function
6253     # 13203: No EMMS instruction before return from function
6254     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6255     # 11030: Warning unknown option --as-needed
6256     # 10156: ignoring option '-export'; no argument required
6257     check_ldflags -wd10156,11030
6258     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6259     enable ebp_available
6260     # The test above does not test linking
6261     enabled lto && disable symver_asm_label
6262     if enabled x86_32; then
6263         icc_version=$($cc -dumpversion)
6264         test ${icc_version%%.*} -ge 11 &&
6265             check_cflags -falign-stack=maintain-16-byte ||
6266             disable aligned_stack
6267     fi
6268 elif enabled ccc; then
6269     # disable some annoying warnings
6270     add_cflags -msg_disable bitnotint
6271     add_cflags -msg_disable mixfuncvoid
6272     add_cflags -msg_disable nonstandcast
6273     add_cflags -msg_disable unsupieee
6274 elif enabled gcc; then
6275     check_optflags -fno-tree-vectorize
6276     check_cflags -Werror=format-security
6277     check_cflags -Werror=implicit-function-declaration
6278     check_cflags -Werror=missing-prototypes
6279     check_cflags -Werror=return-type
6280     check_cflags -Werror=vla
6281     check_cflags -Wformat
6282     check_cflags -fdiagnostics-color=auto
6283     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6284 elif enabled llvm_gcc; then
6285     check_cflags -mllvm -stack-alignment=16
6286 elif enabled clang; then
6287     check_cflags -mllvm -stack-alignment=16
6288     check_cflags -mstack-alignment=16
6289     check_cflags -Qunused-arguments
6290     check_cflags -Werror=implicit-function-declaration
6291     check_cflags -Werror=missing-prototypes
6292     check_cflags -Werror=return-type
6293 elif enabled cparser; then
6294     add_cflags -Wno-missing-variable-declarations
6295     add_cflags -Wno-empty-statement
6296 elif enabled armcc; then
6297     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6298     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6299     # 2523: use of inline assembly is deprecated
6300     add_cflags -W${armcc_opt},--diag_suppress=2523
6301     add_cflags -W${armcc_opt},--diag_suppress=1207
6302     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6303     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6304     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6305     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6306 elif enabled tms470; then
6307     add_cflags -pds=824 -pds=837
6308     disable inline_asm
6309 elif enabled pathscale; then
6310     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6311 elif enabled_any msvc icl; then
6312     enabled x86_32 && disable aligned_stack
6313     enabled_all x86_32 debug && add_cflags -Oy-
6314     enabled debug && add_ldflags -debug
6315     enable pragma_deprecated
6316     if enabled icl; then
6317         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6318         # (correctly) on icl 13.x.
6319         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6320             add_cflags -Qansi-alias
6321         # Some inline asm is not compilable in debug
6322         if enabled debug; then
6323             disable ebp_available
6324             disable ebx_available
6325         fi
6326     fi
6327     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6328     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
6329     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6330     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6331     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6332     # MSVC 2013 and newer can handle it fine.
6333     # If this declspec fails, force including stdlib.h before the restrict redefinition
6334     # happens in config.h.
6335     if [ $_restrict != restrict ]; then
6336         check_cc <<EOF || add_cflags -FIstdlib.h
6337 __declspec($_restrict) void* foo(int);
6338 EOF
6339     fi
6340     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6341     # Issue has been fixed in MSVC v19.00.24218.
6342     check_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6343         check_cflags -d2SSAOptimizer-
6344     # enable utf-8 source processing on VS2015 U2 and newer
6345     check_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6346         add_cflags -utf-8
6347 fi
6348
6349 for pfx in "" host_; do
6350     varname=${pfx%_}cc_type
6351     eval "type=\$$varname"
6352     if [ $type = "msvc" ]; then
6353         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6354 static inline int foo(int a) { return a; }
6355 EOF
6356     fi
6357 done
6358
6359 case $as_type in
6360     clang)
6361         add_asflags -Qunused-arguments
6362     ;;
6363 esac
6364
6365 case $ld_type in
6366     clang)
6367         check_ldflags -Qunused-arguments
6368     ;;
6369 esac
6370
6371 case $target_os in
6372     osf1)
6373         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
6374     ;;
6375 esac
6376
6377 enable frame_thread_encoder
6378
6379 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6380
6381 check_deps $CONFIG_LIST       \
6382            $CONFIG_EXTRA      \
6383            $HAVE_LIST         \
6384            $ALL_COMPONENTS    \
6385
6386 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"
6387
6388
6389 if test $target_os = "haiku"; then
6390     disable memalign
6391     disable posix_memalign
6392 fi
6393
6394 enabled_all dxva2 dxva2api_cobj CoTaskMemFree &&
6395     prepend ffmpeg_libs $($ldflags_filter "-lole32") &&
6396     enable dxva2_lib
6397
6398 # add_dep lib dep
6399 # -> enable ${lib}_deps_${dep}
6400 # -> add $dep to ${lib}_deps only once
6401 add_dep() {
6402     lib=$1
6403     dep=$2
6404     enabled "${lib}_deps_${dep}" && return 0
6405     enable  "${lib}_deps_${dep}"
6406     prepend "${lib}_deps" $dep
6407 }
6408
6409 # merge deps lib components
6410 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
6411 merge_deps() {
6412     lib=$1
6413     shift
6414     for comp in $*; do
6415         enabled $comp || continue
6416         eval "dep=\"\$${comp}_deps\""
6417         for d in $dep; do
6418             add_dep $lib $d
6419         done
6420     done
6421 }
6422
6423 merge_deps libavfilter $FILTER_LIST
6424
6425 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6426
6427 for thread in $THREADS_LIST; do
6428     if enabled $thread; then
6429         test -n "$thread_type" &&
6430             die "ERROR: Only one thread type must be selected." ||
6431             thread_type="$thread"
6432     fi
6433 done
6434
6435 if disabled stdatomic_h; then
6436     if enabled atomics_gcc; then
6437         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6438     elif enabled atomics_win32; then
6439         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6440     elif enabled atomics_suncc; then
6441         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6442     elif enabled pthreads; then
6443         add_compat atomics/pthread/stdatomic.o
6444         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6445     else
6446         enabled threads && die "Threading is enabled, but no atomics are available"
6447         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6448     fi
6449 fi
6450
6451 # Check if requested libraries were found.
6452 for lib in $AUTODETECT_LIBS; do
6453     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6454 done
6455
6456 enabled zlib && add_cppflags -DZLIB_CONST
6457
6458 # conditional library dependencies, in linking order
6459 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6460 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6461 enabled aresample_filter    && prepend avfilter_deps "swresample"
6462 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6463 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6464 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6465 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6466 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6467 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6468 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6469 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6470 enabled pan_filter          && prepend avfilter_deps "swresample"
6471 enabled pp_filter           && prepend avfilter_deps "postproc"
6472 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6473 enabled resample_filter && prepend avfilter_deps "avresample"
6474 enabled sab_filter          && prepend avfilter_deps "swscale"
6475 enabled scale_filter    && prepend avfilter_deps "swscale"
6476 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6477 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6478 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6479 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6480 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6481 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6482 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6483 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6484 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6485
6486 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6487
6488 enabled opus_decoder    && prepend avcodec_deps "swresample"
6489
6490 expand_deps(){
6491     lib_deps=${1}_deps
6492     eval "deps=\$$lib_deps"
6493     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6494     unique $lib_deps
6495 }
6496
6497 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6498 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6499
6500 map 'expand_deps $v' $LIBRARY_LIST
6501
6502 license="LGPL version 2.1 or later"
6503 if enabled nonfree; then
6504     license="nonfree and unredistributable"
6505 elif enabled gplv3; then
6506     license="GPL version 3 or later"
6507 elif enabled lgplv3; then
6508     license="LGPL version 3 or later"
6509 elif enabled gpl; then
6510     license="GPL version 2 or later"
6511 fi
6512
6513 if test "$quiet" != "yes"; then
6514
6515 echo "install prefix            $prefix"
6516 echo "source path               $source_path"
6517 echo "C compiler                $cc"
6518 echo "C library                 $libc_type"
6519 if test "$host_cc" != "$cc"; then
6520     echo "host C compiler           $host_cc"
6521     echo "host C library            $host_libc_type"
6522 fi
6523 echo "ARCH                      $arch ($cpu)"
6524 if test "$build_suffix" != ""; then
6525     echo "build suffix              $build_suffix"
6526 fi
6527 if test "$progs_suffix" != ""; then
6528     echo "progs suffix              $progs_suffix"
6529 fi
6530 if test "$extra_version" != ""; then
6531     echo "version string suffix     $extra_version"
6532 fi
6533 echo "big-endian                ${bigendian-no}"
6534 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6535 if enabled x86; then
6536     echo "${yasmexe}                      ${yasm-no}"
6537     echo "MMX enabled               ${mmx-no}"
6538     echo "MMXEXT enabled            ${mmxext-no}"
6539     echo "3DNow! enabled            ${amd3dnow-no}"
6540     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6541     echo "SSE enabled               ${sse-no}"
6542     echo "SSSE3 enabled             ${ssse3-no}"
6543     echo "AESNI enabled             ${aesni-no}"
6544     echo "AVX enabled               ${avx-no}"
6545     echo "XOP enabled               ${xop-no}"
6546     echo "FMA3 enabled              ${fma3-no}"
6547     echo "FMA4 enabled              ${fma4-no}"
6548     echo "i686 features enabled     ${i686-no}"
6549     echo "CMOV is fast              ${fast_cmov-no}"
6550     echo "EBX available             ${ebx_available-no}"
6551     echo "EBP available             ${ebp_available-no}"
6552 fi
6553 if enabled aarch64; then
6554     echo "NEON enabled              ${neon-no}"
6555     echo "VFP enabled               ${vfp-no}"
6556 fi
6557 if enabled arm; then
6558     echo "ARMv5TE enabled           ${armv5te-no}"
6559     echo "ARMv6 enabled             ${armv6-no}"
6560     echo "ARMv6T2 enabled           ${armv6t2-no}"
6561     echo "VFP enabled               ${vfp-no}"
6562     echo "NEON enabled              ${neon-no}"
6563     echo "THUMB enabled             ${thumb-no}"
6564 fi
6565 if enabled mips; then
6566     echo "MIPS FPU enabled          ${mipsfpu-no}"
6567     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6568     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6569     echo "MIPS MSA enabled          ${msa-no}"
6570     echo "LOONGSON MMI enabled      ${mmi-no}"
6571 fi
6572 if enabled ppc; then
6573     echo "AltiVec enabled           ${altivec-no}"
6574     echo "VSX enabled               ${vsx-no}"
6575     echo "POWER8 enabled            ${power8-no}"
6576     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6577     echo "dcbzl available           ${dcbzl-no}"
6578 fi
6579 echo "debug symbols             ${debug-no}"
6580 echo "strip symbols             ${stripping-no}"
6581 echo "optimize for size         ${small-no}"
6582 echo "optimizations             ${optimizations-no}"
6583 echo "static                    ${static-no}"
6584 echo "shared                    ${shared-no}"
6585 echo "postprocessing support    ${postproc-no}"
6586 echo "network support           ${network-no}"
6587 echo "threading support         ${thread_type-no}"
6588 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6589 echo "texi2html enabled         ${texi2html-no}"
6590 echo "perl enabled              ${perl-no}"
6591 echo "pod2man enabled           ${pod2man-no}"
6592 echo "makeinfo enabled          ${makeinfo-no}"
6593 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6594 test -n "$random_seed" &&
6595     echo "random seed               ${random_seed}"
6596 echo
6597
6598 echo "External libraries:"
6599 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_in_columns
6600 echo
6601
6602 echo "External libraries providing hardware acceleration:"
6603 print_enabled '' $HWACCEL_LIBRARY_LIST | print_in_columns
6604 echo
6605
6606 echo "Libraries:"
6607 print_enabled '' $LIBRARY_LIST | print_in_columns
6608 echo
6609
6610 echo "Programs:"
6611 print_enabled '' $PROGRAM_LIST | print_in_columns
6612 echo
6613
6614 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6615     echo "Enabled ${type}s:"
6616     eval list=\$$(toupper $type)_LIST
6617     print_enabled '_*' $list | print_in_columns
6618     echo
6619 done
6620
6621 echo "License: $license"
6622
6623 echo "Creating configuration files ..."
6624
6625 fi # test "$quiet" != "yes"
6626
6627 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6628
6629 enabled stripping || strip="echo skipping strip"
6630
6631 config_files="$TMPH config.mak doc/config.texi"
6632
6633 cat > config.mak <<EOF
6634 # Automatically generated by configure - do not modify!
6635 ifndef FFMPEG_CONFIG_MAK
6636 FFMPEG_CONFIG_MAK=1
6637 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6638 prefix=$prefix
6639 LIBDIR=\$(DESTDIR)$libdir
6640 SHLIBDIR=\$(DESTDIR)$shlibdir
6641 INCDIR=\$(DESTDIR)$incdir
6642 BINDIR=\$(DESTDIR)$bindir
6643 DATADIR=\$(DESTDIR)$datadir
6644 DOCDIR=\$(DESTDIR)$docdir
6645 MANDIR=\$(DESTDIR)$mandir
6646 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6647 INSTALL_NAME_DIR=$install_name_dir
6648 SRC_PATH=$source_path
6649 SRC_LINK=$source_link
6650 ifndef MAIN_MAKEFILE
6651 SRC_PATH:=\$(SRC_PATH:.%=..%)
6652 endif
6653 CC_IDENT=$cc_ident
6654 ARCH=$arch
6655 INTRINSICS=$intrinsics
6656 CC=$cc
6657 CXX=$cxx
6658 AS=$as
6659 OBJCC=$objcc
6660 LD=$ld
6661 DEPCC=$dep_cc
6662 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6663 DEPAS=$as
6664 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6665 YASM=$yasmexe
6666 DEPYASM=$yasmexe
6667 AR=$ar
6668 ARFLAGS=$arflags
6669 AR_O=$ar_o
6670 RANLIB=$ranlib
6671 STRIP=$strip
6672 CP=cp -p
6673 LN_S=$ln_s
6674 CPPFLAGS=$CPPFLAGS
6675 CFLAGS=$CFLAGS
6676 CXXFLAGS=$CXXFLAGS
6677 OBJCFLAGS=$OBJCFLAGS
6678 ASFLAGS=$ASFLAGS
6679 AS_C=$AS_C
6680 AS_O=$AS_O
6681 OBJCC_C=$OBJCC_C
6682 OBJCC_E=$OBJCC_E
6683 OBJCC_O=$OBJCC_O
6684 CC_C=$CC_C
6685 CC_E=$CC_E
6686 CC_O=$CC_O
6687 CXX_C=$CXX_C
6688 CXX_O=$CXX_O
6689 LD_O=$LD_O
6690 LD_LIB=$LD_LIB
6691 LD_PATH=$LD_PATH
6692 DLLTOOL=$dlltool
6693 WINDRES=$windres
6694 DEPWINDRES=$dep_cc
6695 DOXYGEN=$doxygen
6696 LDFLAGS=$LDFLAGS
6697 LDEXEFLAGS=$LDEXEFLAGS
6698 LDLIBFLAGS=$LDLIBFLAGS
6699 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
6700 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
6701 YASMFLAGS=$YASMFLAGS
6702 BUILDSUF=$build_suffix
6703 PROGSSUF=$progs_suffix
6704 FULLNAME=$FULLNAME
6705 LIBPREF=$LIBPREF
6706 LIBSUF=$LIBSUF
6707 LIBNAME=$LIBNAME
6708 SLIBPREF=$SLIBPREF
6709 SLIBSUF=$SLIBSUF
6710 EXESUF=$EXESUF
6711 EXTRA_VERSION=$extra_version
6712 CCDEP=$CCDEP
6713 CXXDEP=$CXXDEP
6714 CCDEP_FLAGS=$CCDEP_FLAGS
6715 ASDEP=$ASDEP
6716 ASDEP_FLAGS=$ASDEP_FLAGS
6717 CC_DEPFLAGS=$CC_DEPFLAGS
6718 AS_DEPFLAGS=$AS_DEPFLAGS
6719 HOSTCC=$host_cc
6720 HOSTLD=$host_ld
6721 HOSTCFLAGS=$host_cflags
6722 HOSTCPPFLAGS=$host_cppflags
6723 HOSTEXESUF=$HOSTEXESUF
6724 HOSTLDFLAGS=$host_ldflags
6725 HOSTEXTRALIBS=$host_extralibs
6726 DEPHOSTCC=$host_cc
6727 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
6728 HOSTCCDEP=$HOSTCCDEP
6729 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
6730 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
6731 HOSTCC_C=$HOSTCC_C
6732 HOSTCC_O=$HOSTCC_O
6733 HOSTLD_O=$HOSTLD_O
6734 TARGET_EXEC=$target_exec $target_exec_args
6735 TARGET_PATH=$target_path
6736 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
6737 CFLAGS-ffplay=${sdl2_cflags}
6738 CFLAGS_HEADERS=$CFLAGS_HEADERS
6739 ZLIB=$($ldflags_filter -lz)
6740 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
6741 EXTRALIBS=$extralibs
6742 COMPAT_OBJS=$compat_objs
6743 INSTALL=$install
6744 LIBTARGET=${LIBTARGET}
6745 SLIBNAME=${SLIBNAME}
6746 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
6747 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
6748 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
6749 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
6750 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
6751 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
6752 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
6753 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
6754 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
6755 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
6756 NOREDZONE_FLAGS=$noredzone_flags
6757 EOF
6758
6759 get_version(){
6760     lcname=lib${1}
6761     name=$(toupper $lcname)
6762     file=$source_path/$lcname/version.h
6763     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
6764     enabled raise_major && eval ${name}_VERSION_MAJOR=$((${name}_VERSION_MAJOR+100))
6765     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
6766     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
6767     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
6768     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
6769 }
6770
6771 map 'get_version $v' $LIBRARY_LIST
6772
6773 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> config.mak' $LIBRARY_LIST
6774
6775 print_program_libs(){
6776     eval "program_libs=\$${1}_libs"
6777     eval echo "LIBS-${1}=${program_libs}" >> config.mak
6778 }
6779
6780 map 'print_program_libs $v' $PROGRAM_LIST
6781
6782 cat > $TMPH <<EOF
6783 /* Automatically generated by configure - do not modify! */
6784 #ifndef FFMPEG_CONFIG_H
6785 #define FFMPEG_CONFIG_H
6786 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
6787 #define FFMPEG_LICENSE "$(c_escape $license)"
6788 #define CONFIG_THIS_YEAR 2017
6789 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
6790 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
6791 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
6792 #define av_restrict $_restrict
6793 #define EXTERN_PREFIX "${extern_prefix}"
6794 #define EXTERN_ASM ${extern_prefix}
6795 #define BUILDSUF "$build_suffix"
6796 #define SLIBSUF "$SLIBSUF"
6797 #define HAVE_MMX2 HAVE_MMXEXT
6798 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
6799 EOF
6800
6801 test -n "$assert_level" &&
6802     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
6803
6804 test -n "$malloc_prefix" &&
6805     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
6806
6807 if enabled yasm; then
6808     append config_files $TMPASM
6809     printf '' >$TMPASM
6810 fi
6811
6812 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
6813
6814
6815 mkdir -p doc
6816 mkdir -p tests
6817 mkdir -p tests/api
6818 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
6819
6820 print_config ARCH_   "$config_files" $ARCH_LIST
6821 print_config HAVE_   "$config_files" $HAVE_LIST
6822 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
6823                                      $CONFIG_EXTRA      \
6824                                      $ALL_COMPONENTS    \
6825
6826 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
6827 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
6828
6829 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
6830 cp_if_changed $TMPH config.h
6831 touch .config
6832
6833 enabled yasm && cp_if_changed $TMPASM config.asm
6834
6835 cat > $TMPH <<EOF
6836 /* Generated by ffconf */
6837 #ifndef AVUTIL_AVCONFIG_H
6838 #define AVUTIL_AVCONFIG_H
6839 EOF
6840
6841 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
6842
6843 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
6844
6845 cp_if_changed $TMPH libavutil/avconfig.h
6846
6847 # generate the lists of enabled components
6848 print_enabled_components(){
6849     file=$1
6850     struct_name=$2
6851     name=$3
6852     shift 3
6853     echo "static const $struct_name *$name[] = {" > $TMPH
6854     for c in $*; do
6855         enabled $c && printf "    &ff_%s,\n" $c >> $TMPH
6856     done
6857     echo "    NULL };" >> $TMPH
6858     cp_if_changed $TMPH $file
6859 }
6860
6861 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
6862 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
6863
6864 if test -n "$WARNINGS"; then
6865     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
6866     enabled fatal_warnings && exit 1
6867 fi
6868
6869 # build pkg-config files
6870
6871 lib_version(){
6872     eval printf "\"lib${1}${build_suffix} >= \$LIB$(toupper ${1})_VERSION, \""
6873 }
6874
6875 pkgconfig_generate(){
6876     name=$1
6877     shortname=${name#lib}${build_suffix}
6878     comment=$2
6879     version=$3
6880     libs=$4
6881     requires=$(map 'lib_version $v' $(eval echo \$${name#lib}_deps))
6882     requires=${requires%, }
6883     enabled ${name#lib} || return 0
6884     mkdir -p $name
6885     cat <<EOF > $name/$name${build_suffix}.pc
6886 prefix=$prefix
6887 exec_prefix=\${prefix}
6888 libdir=$libdir
6889 includedir=$incdir
6890
6891 Name: $name
6892 Description: $comment
6893 Version: $version
6894 Requires: $(enabled shared || echo $requires)
6895 Requires.private: $(enabled shared && echo $requires)
6896 Conflicts:
6897 Libs: -L\${libdir} $(enabled rpath && echo "-Wl,-rpath,\${libdir}") -l${shortname} $(enabled shared || echo $libs)
6898 Libs.private: $(enabled shared && echo $libs)
6899 Cflags: -I\${includedir}
6900 EOF
6901
6902 mkdir -p doc/examples/pc-uninstalled
6903 includedir=${source_path}
6904 [ "$includedir" = . ] && includedir="\${pcfiledir}/../../.."
6905     cat <<EOF > doc/examples/pc-uninstalled/${name}-uninstalled.pc
6906 prefix=
6907 exec_prefix=
6908 libdir=\${pcfiledir}/../../../$name
6909 includedir=${includedir}
6910
6911 Name: $name
6912 Description: $comment
6913 Version: $version
6914 Requires: $requires
6915 Conflicts:
6916 Libs: -L\${libdir} -Wl,-rpath,\${libdir} -l${shortname} $(enabled shared || echo $libs)
6917 Cflags: -I\${includedir}
6918 EOF
6919 }
6920
6921 pkgconfig_generate libavutil     "FFmpeg utility library"               "$LIBAVUTIL_VERSION"     "$LIBRT $LIBM"
6922 pkgconfig_generate libavcodec    "FFmpeg codec library"                 "$LIBAVCODEC_VERSION"    "$extralibs"
6923 pkgconfig_generate libavformat   "FFmpeg container format library"      "$LIBAVFORMAT_VERSION"   "$extralibs"
6924 pkgconfig_generate libavdevice   "FFmpeg device handling library"       "$LIBAVDEVICE_VERSION"   "$extralibs"
6925 pkgconfig_generate libavfilter   "FFmpeg audio/video filtering library" "$LIBAVFILTER_VERSION"   "$extralibs"
6926 pkgconfig_generate libpostproc   "FFmpeg postprocessing library"        "$LIBPOSTPROC_VERSION"   ""
6927 pkgconfig_generate libavresample "Libav audio resampling library"       "$LIBAVRESAMPLE_VERSION" "$LIBM"
6928 pkgconfig_generate libswscale    "FFmpeg image rescaling library"       "$LIBSWSCALE_VERSION"    "$LIBM"
6929 pkgconfig_generate libswresample "FFmpeg audio resampling library"      "$LIBSWRESAMPLE_VERSION" "$LIBM $LIBSOXR"