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   --enable-osfuzz          Enable building fuzzer tool
 442   --libfuzzer=PATH         path to libfuzzer
 443
 444 NOTE: Object files are built at the place where configure is launched.
 445 EOF
 446   exit 0
 447 }
 448
 449 quotes='""'
 450 if test -t 1 && which tput >/dev/null 2>&1; then
 451     ncolors=$(tput colors)
 452     if test -n "$ncolors" && test $ncolors -ge 8; then
 453         bold_color=$(tput bold)
 454         warn_color=$(tput setaf 3)
 455         error_color=$(tput setaf 1)
 456         reset_color=$(tput sgr0)
 457     fi
 458     # 72 used instead of 80 since that's the default of pr
 459     ncols=$(tput cols)
 460 fi
 461 : ${ncols:=72}
 462
 463 log(){
 464     echo "$@" >> $logfile
 465 }
 466
 467 log_file(){
 468     log BEGIN $1
 469     pr -n -t $1 >> $logfile
 470     log END $1
 471 }
 472
 473 warn(){
 474     log "WARNING: $*"
 475     WARNINGS="${WARNINGS}WARNING: $*\n"
 476 }
 477
 478 die(){
 479     log "$@"
 480     echo "$error_color$bold_color$@$reset_color"
 481     cat <<EOF
 482
 483 If you think configure made a mistake, make sure you are using the latest
 484 version from Git.  If the latest version fails, report the problem to the
 485 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 486 EOF
 487     if disabled logging; then
 488         cat <<EOF
 489 Rerun configure with logging enabled (do not use --disable-logging), and
 490 include the log this produces with your report.
 491 EOF
 492     else
 493         cat <<EOF
 494 Include the log file "$logfile" produced by configure as this will help
 495 solve the problem.
 496 EOF
 497     fi
 498     exit 1
 499 }
 500
 501 # Avoid locale weirdness, besides we really just want to translate ASCII.
 502 toupper(){
 503     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 504 }
 505
 506 tolower(){
 507     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 508 }
 509
 510 c_escape(){
 511     echo "$*" | sed 's/["\\]/\\\0/g'
 512 }
 513
 514 sh_quote(){
 515     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 516     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 517     echo "$v"
 518 }
 519
 520 cleanws(){
 521     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 522 }
 523
 524 filter(){
 525     pat=$1
 526     shift
 527     for v; do
 528         eval "case $v in $pat) printf '%s ' $v ;; esac"
 529     done
 530 }
 531
 532 filter_out(){
 533     pat=$1
 534     shift
 535     for v; do
 536         eval "case $v in $pat) ;; *) printf '%s ' $v ;; esac"
 537     done
 538 }
 539
 540 map(){
 541     m=$1
 542     shift
 543     for v; do eval $m; done
 544 }
 545
 546 add_suffix(){
 547     suffix=$1
 548     shift
 549     for v; do echo ${v}${suffix}; done
 550 }
 551
 552 set_all(){
 553     value=$1
 554     shift
 555     for var in $*; do
 556         eval $var=$value
 557     done
 558 }
 559
 560 set_weak(){
 561     value=$1
 562     shift
 563     for var; do
 564         eval : \${$var:=$value}
 565     done
 566 }
 567
 568 sanitize_var_name(){
 569     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 570 }
 571
 572 set_safe(){
 573     var=$1
 574     shift
 575     eval $(sanitize_var_name "$var")='$*'
 576 }
 577
 578 get_safe(){
 579     eval echo \$$(sanitize_var_name "$1")
 580 }
 581
 582 pushvar(){
 583     for pvar in $*; do
 584         eval level=\${${pvar}_level:=0}
 585         eval ${pvar}_${level}="\$$pvar"
 586         eval ${pvar}_level=$(($level+1))
 587     done
 588 }
 589
 590 popvar(){
 591     for pvar in $*; do
 592         eval level=\${${pvar}_level:-0}
 593         test $level = 0 && continue
 594         eval level=$(($level-1))
 595         eval $pvar="\${${pvar}_${level}}"
 596         eval ${pvar}_level=$level
 597         eval unset ${pvar}_${level}
 598     done
 599 }
 600
 601 request(){
 602     for var in $*; do
 603         eval ${var}_requested=yes
 604         eval $var=
 605     done
 606 }
 607
 608 enable(){
 609     set_all yes $*
 610 }
 611
 612 disable(){
 613     set_all no $*
 614 }
 615
 616 enable_weak(){
 617     set_weak yes $*
 618 }
 619
 620 disable_weak(){
 621     set_weak no $*
 622 }
 623
 624 enable_safe(){
 625     for var; do
 626         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 627     done
 628 }
 629
 630 disable_safe(){
 631     for var; do
 632         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 633     done
 634 }
 635
 636 do_enable_deep(){
 637     for var; do
 638         enabled $var && continue
 639         eval sel="\$${var}_select"
 640         eval sgs="\$${var}_suggest"
 641         pushvar var sgs
 642         enable_deep $sel
 643         popvar sgs
 644         enable_deep_weak $sgs
 645         popvar var
 646     done
 647 }
 648
 649 enable_deep(){
 650     do_enable_deep $*
 651     enable $*
 652 }
 653
 654 enable_deep_weak(){
 655     for var; do
 656         disabled $var && continue
 657         pushvar var
 658         do_enable_deep $var
 659         popvar var
 660         enable_weak $var
 661     done
 662 }
 663
 664 requested(){
 665     test "${1#!}" = "$1" && op='=' || op=!=
 666     eval test "x\$${1#!}_requested" $op "xyes"
 667 }
 668
 669 enabled(){
 670     test "${1#!}" = "$1" && op='=' || op=!=
 671     eval test "x\$${1#!}" $op "xyes"
 672 }
 673
 674 disabled(){
 675     test "${1#!}" = "$1" && op='=' || op=!=
 676     eval test "x\$${1#!}" $op "xno"
 677 }
 678
 679 enabled_all(){
 680     for opt; do
 681         enabled $opt || return 1
 682     done
 683 }
 684
 685 disabled_all(){
 686     for opt; do
 687         disabled $opt || return 1
 688     done
 689 }
 690
 691 enabled_any(){
 692     for opt; do
 693         enabled $opt && return 0
 694     done
 695 }
 696
 697 disabled_any(){
 698     for opt; do
 699         disabled $opt && return 0
 700     done
 701     return 1
 702 }
 703
 704 set_default(){
 705     for opt; do
 706         eval : \${$opt:=\$${opt}_default}
 707     done
 708 }
 709
 710 is_in(){
 711     value=$1
 712     shift
 713     for var in $*; do
 714         [ $var = $value ] && return 0
 715     done
 716     return 1
 717 }
 718
 719 do_check_deps(){
 720     for cfg; do
 721         cfg="${cfg#!}"
 722         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 723         disabled ${cfg}_checking && continue
 724         enable ${cfg}_checking
 725         append allopts $cfg
 726
 727         eval dep_all="\$${cfg}_deps"
 728         eval dep_any="\$${cfg}_deps_any"
 729         eval dep_sel="\$${cfg}_select"
 730         eval dep_sgs="\$${cfg}_suggest"
 731         eval dep_ifa="\$${cfg}_if"
 732         eval dep_ifn="\$${cfg}_if_any"
 733
 734         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 735         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
 736         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 737
 738         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 739         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 740         enabled_all  $dep_all || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not all dependencies are satisfied: $dep_all"; }
 741         enabled_any  $dep_any || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not any dependency is satisfied: $dep_any"; }
 742         disabled_any $dep_sel && { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some selected dependency is unsatisfied: $dep_sel"; }
 743
 744         if enabled $cfg; then
 745             enable_deep $dep_sel
 746             enable_deep_weak $dep_sgs
 747         fi
 748
 749         disable ${cfg}_checking
 750     done
 751 }
 752
 753 check_deps(){
 754     unset allopts
 755
 756     do_check_deps "$@"
 757
 758     for cfg in $allopts; do
 759         enabled $cfg || continue
 760         eval dep_extralibs="\$${cfg}_extralibs"
 761         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
 762     done
 763 }
 764
 765 print_config(){
 766     pfx=$1
 767     files=$2
 768     shift 2
 769     map 'eval echo "$v \${$v:-no}"' "$@" |
 770     awk "BEGIN { split(\"$files\", files) }
 771         {
 772             c = \"$pfx\" toupper(\$1);
 773             v = \$2;
 774             sub(/yes/, 1, v);
 775             sub(/no/,  0, v);
 776             for (f in files) {
 777                 file = files[f];
 778                 if (file ~ /\\.h\$/) {
 779                     printf(\"#define %s %d\\n\", c, v) >>file;
 780                 } else if (file ~ /\\.asm\$/) {
 781                     printf(\"%%define %s %d\\n\", c, v) >>file;
 782                 } else if (file ~ /\\.mak\$/) {
 783                     n = -v ? \"\" : \"!\";
 784                     printf(\"%s%s=yes\\n\", n, c) >>file;
 785                 } else if (file ~ /\\.texi\$/) {
 786                     pre = -v ? \"\" : \"@c \";
 787                     yesno = \$2;
 788                     c2 = tolower(c);
 789                     gsub(/_/, \"-\", c2);
 790                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 791                 }
 792             }
 793         }"
 794 }
 795
 796 print_enabled(){
 797     suf=$1
 798     shift
 799     for v; do
 800         enabled $v && printf "%s\n" ${v%$suf}
 801     done
 802 }
 803
 804 append(){
 805     var=$1
 806     shift
 807     eval "$var=\"\$$var $*\""
 808 }
 809
 810 prepend(){
 811     var=$1
 812     shift
 813     eval "$var=\"$* \$$var\""
 814 }
 815
 816 unique(){
 817     var=$1
 818     uniq_list=""
 819     for tok in $(eval echo \$$var); do
 820         uniq_list="$(filter_out $tok $uniq_list) $tok"
 821     done
 822     eval "$var=\"${uniq_list}\""
 823 }
 824
 825 add_cppflags(){
 826     append CPPFLAGS "$@"
 827 }
 828
 829 add_cflags(){
 830     append CFLAGS $($cflags_filter "$@")
 831 }
 832
 833 add_cflags_headers(){
 834     append CFLAGS_HEADERS $($cflags_filter "$@")
 835 }
 836
 837 add_cxxflags(){
 838     append CXXFLAGS $($cflags_filter "$@")
 839 }
 840
 841 add_asflags(){
 842     append ASFLAGS $($asflags_filter "$@")
 843 }
 844
 845 add_objcflags(){
 846     append OBJCFLAGS $($objcflags_filter "$@")
 847 }
 848
 849 add_ldflags(){
 850     append LDFLAGS $($ldflags_filter "$@")
 851 }
 852
 853 add_ldexeflags(){
 854     append LDEXEFLAGS $($ldflags_filter "$@")
 855 }
 856
 857 add_ldlibflags(){
 858     append LDLIBFLAGS $($ldflags_filter "$@")
 859 }
 860
 861 add_stripflags(){
 862     append ASMSTRIPFLAGS "$@"
 863 }
 864
 865 add_extralibs(){
 866     prepend extralibs $($ldflags_filter "$@")
 867 }
 868
 869 add_host_cppflags(){
 870     append host_cppflags "$@"
 871 }
 872
 873 add_host_cflags(){
 874     append host_cflags $($host_cflags_filter "$@")
 875 }
 876
 877 add_host_ldflags(){
 878     append host_ldflags $($host_ldflags_filter "$@")
 879 }
 880
 881 add_compat(){
 882     append compat_objs $1
 883     shift
 884     map 'add_cppflags -D$v' "$@"
 885 }
 886
 887 check_cmd(){
 888     log "$@"
 889     "$@" >> $logfile 2>&1
 890 }
 891
 892 check_stat(){
 893     log check_stat "$@"
 894     stat "$1" >> $logfile 2>&1
 895 }
 896
 897 cc_o(){
 898     eval printf '%s\\n' $CC_O
 899 }
 900
 901 cc_e(){
 902     eval printf '%s\\n' $CC_E
 903 }
 904
 905 check_cc(){
 906     log check_cc "$@"
 907     cat > $TMPC
 908     log_file $TMPC
 909     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 910 }
 911
 912 check_cxx(){
 913     log check_cxx "$@"
 914     cat > $TMPCPP
 915     log_file $TMPCPP
 916     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 917 }
 918
 919 check_objcc(){
 920     log check_objcc "$@"
 921     cat > $TMPM
 922     log_file $TMPM
 923     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
 924 }
 925
 926 check_cpp(){
 927     log check_cpp "$@"
 928     cat > $TMPC
 929     log_file $TMPC
 930     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 931 }
 932
 933 as_o(){
 934     eval printf '%s\\n' $AS_O
 935 }
 936
 937 check_as(){
 938     log check_as "$@"
 939     cat > $TMPS
 940     log_file $TMPS
 941     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 942 }
 943
 944 check_inline_asm(){
 945     log check_inline_asm "$@"
 946     name="$1"
 947     code="$2"
 948     shift 2
 949     disable $name
 950     check_cc "$@" <<EOF && enable $name
 951 void foo(void){ __asm__ volatile($code); }
 952 EOF
 953 }
 954
 955 check_inline_asm_flags(){
 956     log check_inline_asm_flags "$@"
 957     name="$1"
 958     code="$2"
 959     flags=''
 960     shift 2
 961     while [ "$1" != "" ]; do
 962       append flags $1
 963       shift
 964     done;
 965     disable $name
 966     cat > $TMPC <<EOF
 967 void foo(void){ __asm__ volatile($code); }
 968 EOF
 969     log_file $TMPC
 970     check_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
 971     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
 972 }
 973
 974 check_insn(){
 975     log check_insn "$@"
 976     check_inline_asm ${1}_inline "\"$2\""
 977     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 978 }
 979
 980 check_yasm(){
 981     log check_yasm "$@"
 982     echo "$1" > $TMPS
 983     log_file $TMPS
 984     shift 1
 985     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
 986 }
 987
 988 ld_o(){
 989     eval printf '%s\\n' $LD_O
 990 }
 991
 992 check_ld(){
 993     log check_ld "$@"
 994     type=$1
 995     shift 1
 996     flags=$(filter_out '-l*|*.so' $@)
 997     libs=$(filter '-l*|*.so' $@)
 998     check_$type $($cflags_filter $flags) || return
 999     flags=$($ldflags_filter $flags)
1000     libs=$($ldflags_filter $libs)
1001     check_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1002 }
1003
1004 print_include(){
1005     hdr=$1
1006     test "${hdr%.h}" = "${hdr}" &&
1007         echo "#include $hdr"    ||
1008         echo "#include <$hdr>"
1009 }
1010
1011 check_code(){
1012     log check_code "$@"
1013     check=$1
1014     headers=$2
1015     code=$3
1016     shift 3
1017     {
1018         for hdr in $headers; do
1019             print_include $hdr
1020         done
1021         echo "int main(void) { $code; return 0; }"
1022     } | check_$check "$@"
1023 }
1024
1025 check_cppflags(){
1026     log check_cppflags "$@"
1027     check_cpp "$@" <<EOF && append CPPFLAGS "$@"
1028 int x;
1029 EOF
1030 }
1031
1032 test_cflags(){
1033     log test_cflags "$@"
1034     set -- $($cflags_filter "$@")
1035     check_cc "$@" <<EOF
1036 int x;
1037 EOF
1038 }
1039
1040 check_cflags(){
1041     log check_cflags "$@"
1042     test_cflags "$@" && add_cflags "$@"
1043 }
1044
1045 check_cxxflags(){
1046     log check_cxxflags "$@"
1047     set -- $($cflags_filter "$@")
1048     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
1049 int x;
1050 EOF
1051 }
1052
1053 test_objcflags(){
1054     log test_objcflags "$@"
1055     set -- $($objcflags_filter "$@")
1056     check_objcc "$@" <<EOF
1057 int x;
1058 EOF
1059 }
1060
1061 check_objcflags(){
1062     log check_objcflags "$@"
1063     test_objcflags "$@" && add_objcflags "$@"
1064 }
1065
1066 test_ldflags(){
1067     log test_ldflags "$@"
1068     check_ld "cc" "$@" <<EOF
1069 int main(void){ return 0; }
1070 EOF
1071 }
1072
1073 check_ldflags(){
1074     log check_ldflags "$@"
1075     test_ldflags "$@" && add_ldflags "$@"
1076 }
1077
1078 test_stripflags(){
1079     log test_stripflags "$@"
1080     # call check_cc to get a fresh TMPO
1081     check_cc <<EOF
1082 int main(void) { return 0; }
1083 EOF
1084     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1085 }
1086
1087 check_stripflags(){
1088     log check_stripflags "$@"
1089     test_stripflags "$@" && add_stripflags "$@"
1090 }
1091
1092 check_header(){
1093     log check_header "$@"
1094     header=$1
1095     shift
1096     disable_safe $header
1097     check_cpp "$@" <<EOF && enable_safe $header
1098 #include <$header>
1099 int x;
1100 EOF
1101 }
1102
1103 check_header_objcc(){
1104     log check_header_objcc "$@"
1105     rm -f -- "$TMPO"
1106     header=$1
1107     shift
1108     disable_safe $header
1109     {
1110        echo "#include <$header>"
1111        echo "int main(void) { return 0; }"
1112     } | check_objcc && check_stat "$TMPO" && enable_safe $headers
1113 }
1114
1115 check_func(){
1116     log check_func "$@"
1117     func=$1
1118     shift
1119     disable $func
1120     check_ld "cc" "$@" <<EOF && enable $func
1121 extern int $func();
1122 int main(void){ $func(); }
1123 EOF
1124 }
1125
1126 check_complexfunc(){
1127     log check_complexfunc "$@"
1128     func=$1
1129     narg=$2
1130     shift 2
1131     test $narg = 2 && args="f, g" || args="f * I"
1132     disable $func
1133     check_ld "cc" "$@" <<EOF && enable $func
1134 #include <complex.h>
1135 #include <math.h>
1136 float foo(complex float f, complex float g) { return $func($args); }
1137 int main(void){ return (int) foo; }
1138 EOF
1139 }
1140
1141 check_mathfunc(){
1142     log check_mathfunc "$@"
1143     func=$1
1144     narg=$2
1145     shift 2
1146     test $narg = 2 && args="f, g" || args="f"
1147     disable $func
1148     check_ld "cc" "$@" <<EOF && enable $func
1149 #include <math.h>
1150 float foo(float f, float g) { return $func($args); }
1151 int main(void){ return (int) foo; }
1152 EOF
1153 }
1154
1155 check_func_headers(){
1156     log check_func_headers "$@"
1157     headers=$1
1158     funcs=$2
1159     shift 2
1160     {
1161         for hdr in $headers; do
1162             print_include $hdr
1163         done
1164         echo "#include <stdint.h>"
1165         for func in $funcs; do
1166             echo "long check_$func(void) { return (long) $func; }"
1167         done
1168         echo "int main(void) { int ret = 0;"
1169         # LTO could optimize out the test functions without this
1170         for func in $funcs; do
1171             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1172         done
1173         echo "return ret; }"
1174     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1175 }
1176
1177 check_class_headers_cpp(){
1178     log check_class_headers_cpp "$@"
1179     headers=$1
1180     classes=$2
1181     shift 2
1182     {
1183         for hdr in $headers; do
1184             echo "#include <$hdr>"
1185         done
1186         echo "int main(void) { "
1187         i=1
1188         for class in $classes; do
1189             echo "$class obj$i;"
1190             i=$(expr $i + 1)
1191         done
1192         echo "return 0; }"
1193     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1194 }
1195
1196 check_cpp_condition(){
1197     log check_cpp_condition "$@"
1198     header=$1
1199     condition=$2
1200     shift 2
1201     check_cpp "$@" <<EOF
1202 #include <$header>
1203 #if !($condition)
1204 #error "unsatisfied condition: $condition"
1205 #endif
1206 EOF
1207 }
1208
1209 test_cflags_cc(){
1210     log test_cflags_cc "$@"
1211     flags=$1
1212     header=$2
1213     condition=$3
1214     shift 3
1215     set -- $($cflags_filter "$flags")
1216     check_cc "$@" <<EOF
1217 #include <$header>
1218 #if !($condition)
1219 #error "unsatisfied condition: $condition"
1220 #endif
1221 EOF
1222 }
1223
1224 check_lib(){
1225     log check_lib "$@"
1226     headers="$1"
1227     funcs="$2"
1228     shift 2
1229     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1230 }
1231
1232 check_lib_cpp(){
1233     log check_lib_cpp "$@"
1234     headers="$1"
1235     classes="$2"
1236     shift 2
1237     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1238 }
1239
1240 check_pkg_config(){
1241     log check_pkg_config "$@"
1242     pkg_version="$1"
1243     pkg="${1%% *}"
1244     headers="$2"
1245     funcs="$3"
1246     shift 3
1247     check_cmd $pkg_config --exists --print-errors $pkg_version || return
1248     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1249     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1250     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1251         set_safe "${pkg}_cflags"    $pkg_cflags &&
1252         set_safe "${pkg}_extralibs" $pkg_libs
1253 }
1254
1255 check_exec(){
1256     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1257 }
1258
1259 check_exec_crash(){
1260     log check_exec_crash "$@"
1261     code=$(cat)
1262
1263     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1264     # are safe but may not be available everywhere.  Thus we use
1265     # raise(SIGTERM) instead.  The check is run in a subshell so we
1266     # can redirect the "Terminated" message from the shell.  SIGBUS
1267     # is not defined by standard C so it is used conditionally.
1268
1269     (check_exec "$@") >> $logfile 2>&1 <<EOF
1270 #include <signal.h>
1271 static void sighandler(int sig){
1272     raise(SIGTERM);
1273 }
1274 int foo(void){
1275     $code
1276 }
1277 int (*func_ptr)(void) = foo;
1278 int main(void){
1279     signal(SIGILL, sighandler);
1280     signal(SIGFPE, sighandler);
1281     signal(SIGSEGV, sighandler);
1282 #ifdef SIGBUS
1283     signal(SIGBUS, sighandler);
1284 #endif
1285     return func_ptr();
1286 }
1287 EOF
1288 }
1289
1290 check_type(){
1291     log check_type "$@"
1292     headers=$1
1293     type=$2
1294     shift 2
1295     disable_safe "$type"
1296     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1297 }
1298
1299 check_struct(){
1300     log check_struct "$@"
1301     headers=$1
1302     struct=$2
1303     member=$3
1304     shift 3
1305     disable_safe "${struct}_${member}"
1306     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1307         enable_safe "${struct}_${member}"
1308 }
1309
1310 check_builtin(){
1311     log check_builtin "$@"
1312     name=$1
1313     headers=$2
1314     builtin=$3
1315     shift 3
1316     disable "$name"
1317     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1318 }
1319
1320 check_compile_assert(){
1321     log check_compile_assert "$@"
1322     name=$1
1323     headers=$2
1324     condition=$3
1325     shift 3
1326     disable "$name"
1327     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1328 }
1329
1330 require(){
1331     log require "$@"
1332     name_version="$1"
1333     headers="$2"
1334     func="$3"
1335     shift 3
1336     check_lib "$headers" $func "$@" || die "ERROR: $name_version not found"
1337 }
1338
1339 require_cpp(){
1340     name="$1"
1341     headers="$2"
1342     classes="$3"
1343     shift 3
1344     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1345 }
1346
1347 use_pkg_config(){
1348     log use_pkg_config "$@"
1349     pkg="$1"
1350     check_pkg_config "$@" || return 1
1351     add_cflags    $(get_safe "${pkg}_cflags")
1352     add_extralibs $(get_safe "${pkg}_extralibs")
1353 }
1354
1355 require_pkg_config(){
1356     use_pkg_config "$@" || die "ERROR: $pkg not found using pkg-config$pkg_config_fail_message"
1357 }
1358
1359 hostcc_e(){
1360     eval printf '%s\\n' $HOSTCC_E
1361 }
1362
1363 hostcc_o(){
1364     eval printf '%s\\n' $HOSTCC_O
1365 }
1366
1367 check_host_cc(){
1368     log check_host_cc "$@"
1369     cat > $TMPC
1370     log_file $TMPC
1371     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1372 }
1373
1374 check_host_cpp(){
1375     log check_host_cpp "$@"
1376     cat > $TMPC
1377     log_file $TMPC
1378     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1379 }
1380
1381 check_host_cppflags(){
1382     log check_host_cppflags "$@"
1383     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1384 int x;
1385 EOF
1386 }
1387
1388 check_host_cflags(){
1389     log check_host_cflags "$@"
1390     set -- $($host_cflags_filter "$@")
1391     check_host_cc "$@" <<EOF && append host_cflags "$@"
1392 int x;
1393 EOF
1394 }
1395
1396 check_host_cpp_condition(){
1397     log check_host_cpp_condition "$@"
1398     header=$1
1399     condition=$2
1400     shift 2
1401     check_host_cpp "$@" <<EOF
1402 #include <$header>
1403 #if !($condition)
1404 #error "unsatisfied condition: $condition"
1405 #endif
1406 EOF
1407 }
1408
1409 cp_if_changed(){
1410     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1411     mkdir -p "$(dirname $2)"
1412     cp -f "$1" "$2"
1413 }
1414
1415 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1416 # system-dependent things.
1417
1418 AVCODEC_COMPONENTS="
1419     bsfs
1420     decoders
1421     encoders
1422     hwaccels
1423     parsers
1424 "
1425
1426 AVDEVICE_COMPONENTS="
1427     indevs
1428     outdevs
1429 "
1430 AVFILTER_COMPONENTS="
1431     filters
1432 "
1433 AVFORMAT_COMPONENTS="
1434     demuxers
1435     muxers
1436     protocols
1437 "
1438
1439 AVRESAMPLE_COMPONENTS=""
1440 AVUTIL_COMPONENTS=""
1441
1442 COMPONENT_LIST="
1443     $AVCODEC_COMPONENTS
1444     $AVDEVICE_COMPONENTS
1445     $AVFILTER_COMPONENTS
1446     $AVFORMAT_COMPONENTS
1447     $AVRESAMPLE_COMPONENTS
1448     $AVUTIL_COMPONENTS
1449 "
1450
1451 EXAMPLE_LIST="
1452     avio_dir_cmd_example
1453     avio_reading_example
1454     decode_audio_example
1455     decode_video_example
1456     demuxing_decoding_example
1457     encode_audio_example
1458     encode_video_example
1459     extract_mvs_example
1460     filter_audio_example
1461     filtering_audio_example
1462     filtering_video_example
1463     http_multiclient_example
1464     metadata_example
1465     muxing_example
1466     qsvdec_example
1467     remuxing_example
1468     resampling_audio_example
1469     scaling_video_example
1470     transcode_aac_example
1471     transcoding_example
1472 "
1473 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1474     bzlib
1475     iconv
1476     libxcb
1477     libxcb_shm
1478     libxcb_shape
1479     libxcb_xfixes
1480     lzma
1481     schannel
1482     sdl
1483     sdl2
1484     securetransport
1485     xlib
1486     zlib
1487 "
1488
1489 EXTERNAL_LIBRARY_GPL_LIST="
1490     avisynth
1491     frei0r
1492     libcdio
1493     librubberband
1494     libvidstab
1495     libx264
1496     libx265
1497     libxavs
1498     libxvid
1499 "
1500
1501 EXTERNAL_LIBRARY_NONFREE_LIST="
1502     decklink
1503     libfdk_aac
1504     openssl
1505 "
1506
1507 EXTERNAL_LIBRARY_VERSION3_LIST="
1508     gmp
1509     libopencore_amrnb
1510     libopencore_amrwb
1511     libvo_amrwbenc
1512 "
1513
1514 EXTERNAL_LIBRARY_GPLV3_LIST="
1515     libsmbclient
1516 "
1517
1518 EXTERNAL_LIBRARY_LIST="
1519     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1520     $EXTERNAL_LIBRARY_GPL_LIST
1521     $EXTERNAL_LIBRARY_NONFREE_LIST
1522     $EXTERNAL_LIBRARY_VERSION3_LIST
1523     $EXTERNAL_LIBRARY_GPLV3_LIST
1524     chromaprint
1525     crystalhd
1526     gcrypt
1527     gnutls
1528     jni
1529     ladspa
1530     libass
1531     libbluray
1532     libbs2b
1533     libcaca
1534     libcelt
1535     libdc1394
1536     libflite
1537     libfontconfig
1538     libfreetype
1539     libfribidi
1540     libgme
1541     libgsm
1542     libiec61883
1543     libilbc
1544     libkvazaar
1545     libmodplug
1546     libmp3lame
1547     libnut
1548     libopencv
1549     libopenh264
1550     libopenjpeg
1551     libopenmpt
1552     libopus
1553     libpulse
1554     librtmp
1555     libschroedinger
1556     libshine
1557     libsmbclient
1558     libsnappy
1559     libsoxr
1560     libspeex
1561     libssh
1562     libtesseract
1563     libtheora
1564     libtwolame
1565     libv4l2
1566     libvorbis
1567     libvpx
1568     libwavpack
1569     libwebp
1570     libzimg
1571     libzmq
1572     libzvbi
1573     mediacodec
1574     netcdf
1575     openal
1576     opencl
1577     opengl
1578     videotoolbox
1579 "
1580 HWACCEL_AUTODETECT_LIBRARY_LIST="
1581     audiotoolbox
1582     cuda
1583     cuvid
1584     d3d11va
1585     dxva2
1586     nvenc
1587     vaapi
1588     vda
1589     vdpau
1590     videotoolbox_hwaccel
1591     xvmc
1592 "
1593
1594 HWACCEL_LIBRARY_NONFREE_LIST="
1595     libnpp
1596 "
1597
1598 HWACCEL_LIBRARY_LIST="
1599     $HWACCEL_AUTODETECT_LIBRARY_LIST
1600     $HWACCEL_LIBRARY_NONFREE_LIST
1601     libmfx
1602     mmal
1603     omx
1604 "
1605
1606 DOCUMENT_LIST="
1607     doc
1608     htmlpages
1609     manpages
1610     podpages
1611     txtpages
1612 "
1613
1614 FEATURE_LIST="
1615     ftrapv
1616     gray
1617     hardcoded_tables
1618     omx_rpi
1619     runtime_cpudetect
1620     safe_bitstream_reader
1621     shared
1622     small
1623     static
1624     swscale_alpha
1625 "
1626
1627 LIBRARY_LIST="
1628     avcodec
1629     avdevice
1630     avfilter
1631     avformat
1632     avresample
1633     avutil
1634     postproc
1635     swresample
1636     swscale
1637 "
1638
1639 LICENSE_LIST="
1640     gpl
1641     nonfree
1642     version3
1643 "
1644
1645 PROGRAM_LIST="
1646     ffplay
1647     ffprobe
1648     ffserver
1649     ffmpeg
1650 "
1651
1652 SUBSYSTEM_LIST="
1653     dct
1654     dwt
1655     error_resilience
1656     faan
1657     fast_unaligned
1658     fft
1659     lsp
1660     lzo
1661     mdct
1662     pixelutils
1663     network
1664     rdft
1665 "
1666
1667 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1668 CONFIG_LIST="
1669     $DOCUMENT_LIST
1670     $EXAMPLE_LIST
1671     $EXTERNAL_LIBRARY_LIST
1672     $HWACCEL_LIBRARY_LIST
1673     $FEATURE_LIST
1674     $LICENSE_LIST
1675     $LIBRARY_LIST
1676     $PROGRAM_LIST
1677     $SUBSYSTEM_LIST
1678     fontconfig
1679     memory_poisoning
1680     neon_clobber_test
1681     ossfuzz
1682     pic
1683     raise_major
1684     thumb
1685     valgrind_backtrace
1686     xmm_clobber_test
1687     $COMPONENT_LIST
1688 "
1689
1690 THREADS_LIST="
1691     pthreads
1692     os2threads
1693     w32threads
1694 "
1695
1696 ATOMICS_LIST="
1697     atomics_gcc
1698     atomics_suncc
1699     atomics_win32
1700 "
1701
1702 AUTODETECT_LIBS="
1703     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1704     $HWACCEL_AUTODETECT_LIBRARY_LIST
1705     $THREADS_LIST
1706 "
1707
1708 ARCH_LIST="
1709     aarch64
1710     alpha
1711     arm
1712     avr32
1713     avr32_ap
1714     avr32_uc
1715     bfin
1716     ia64
1717     m68k
1718     mips
1719     mips64
1720     parisc
1721     ppc
1722     ppc64
1723     s390
1724     sh4
1725     sparc
1726     sparc64
1727     tilegx
1728     tilepro
1729     tomi
1730     x86
1731     x86_32
1732     x86_64
1733 "
1734
1735 ARCH_EXT_LIST_ARM="
1736     armv5te
1737     armv6
1738     armv6t2
1739     armv8
1740     neon
1741     vfp
1742     vfpv3
1743     setend
1744 "
1745
1746 ARCH_EXT_LIST_MIPS="
1747     mipsfpu
1748     mips32r2
1749     mips32r5
1750     mips64r2
1751     mips32r6
1752     mips64r6
1753     mipsdsp
1754     mipsdspr2
1755     msa
1756 "
1757
1758 ARCH_EXT_LIST_LOONGSON="
1759     loongson2
1760     loongson3
1761     mmi
1762 "
1763
1764 ARCH_EXT_LIST_X86_SIMD="
1765     aesni
1766     amd3dnow
1767     amd3dnowext
1768     avx
1769     avx2
1770     fma3
1771     fma4
1772     mmx
1773     mmxext
1774     sse
1775     sse2
1776     sse3
1777     sse4
1778     sse42
1779     ssse3
1780     xop
1781 "
1782
1783 ARCH_EXT_LIST_PPC="
1784     altivec
1785     dcbzl
1786     ldbrx
1787     power8
1788     ppc4xx
1789     vsx
1790 "
1791
1792 ARCH_EXT_LIST_X86="
1793     $ARCH_EXT_LIST_X86_SIMD
1794     cpunop
1795     i686
1796 "
1797
1798 ARCH_EXT_LIST="
1799     $ARCH_EXT_LIST_ARM
1800     $ARCH_EXT_LIST_PPC
1801     $ARCH_EXT_LIST_X86
1802     $ARCH_EXT_LIST_MIPS
1803     $ARCH_EXT_LIST_LOONGSON
1804 "
1805
1806 ARCH_FEATURES="
1807     aligned_stack
1808     fast_64bit
1809     fast_clz
1810     fast_cmov
1811     local_aligned_8
1812     local_aligned_16
1813     local_aligned_32
1814     simd_align_16
1815     simd_align_32
1816 "
1817
1818 BUILTIN_LIST="
1819     atomic_cas_ptr
1820     machine_rw_barrier
1821     MemoryBarrier
1822     mm_empty
1823     rdtsc
1824     sarestart
1825     sem_timedwait
1826     sync_val_compare_and_swap
1827 "
1828 HAVE_LIST_CMDLINE="
1829     inline_asm
1830     symver
1831     yasm
1832 "
1833
1834 HAVE_LIST_PUB="
1835     bigendian
1836     fast_unaligned
1837 "
1838
1839 HEADERS_LIST="
1840     alsa_asoundlib_h
1841     altivec_h
1842     arpa_inet_h
1843     asm_types_h
1844     cdio_paranoia_h
1845     cdio_paranoia_paranoia_h
1846     cuda_h
1847     dispatch_dispatch_h
1848     dev_bktr_ioctl_bt848_h
1849     dev_bktr_ioctl_meteor_h
1850     dev_ic_bt8xx_h
1851     dev_video_bktr_ioctl_bt848_h
1852     dev_video_meteor_ioctl_meteor_h
1853     direct_h
1854     dirent_h
1855     dlfcn_h
1856     d3d11_h
1857     dxva_h
1858     ES2_gl_h
1859     gsm_h
1860     io_h
1861     mach_mach_time_h
1862     machine_ioctl_bt848_h
1863     machine_ioctl_meteor_h
1864     malloc_h
1865     opencv2_core_core_c_h
1866     openjpeg_2_1_openjpeg_h
1867     openjpeg_2_0_openjpeg_h
1868     openjpeg_1_5_openjpeg_h
1869     OpenGL_gl3_h
1870     poll_h
1871     sndio_h
1872     soundcard_h
1873     stdatomic_h
1874     sys_mman_h
1875     sys_param_h
1876     sys_resource_h
1877     sys_select_h
1878     sys_soundcard_h
1879     sys_time_h
1880     sys_un_h
1881     sys_videoio_h
1882     termios_h
1883     udplite_h
1884     unistd_h
1885     valgrind_valgrind_h
1886     windows_h
1887     winsock2_h
1888 "
1889
1890 INTRINSICS_LIST="
1891     intrinsics_neon
1892 "
1893
1894 COMPLEX_FUNCS="
1895     cabs
1896     cexp
1897 "
1898
1899 MATH_FUNCS="
1900     atanf
1901     atan2f
1902     cbrt
1903     cbrtf
1904     copysign
1905     cosf
1906     erf
1907     exp2
1908     exp2f
1909     expf
1910     hypot
1911     isfinite
1912     isinf
1913     isnan
1914     ldexpf
1915     llrint
1916     llrintf
1917     log2
1918     log2f
1919     log10f
1920     lrint
1921     lrintf
1922     powf
1923     rint
1924     round
1925     roundf
1926     sinf
1927     trunc
1928     truncf
1929 "
1930
1931 SYSTEM_FUNCS="
1932     access
1933     aligned_malloc
1934     arc4random
1935     clock_gettime
1936     closesocket
1937     CommandLineToArgvW
1938     CoTaskMemFree
1939     CryptGenRandom
1940     dlopen
1941     fcntl
1942     flt_lim
1943     fork
1944     getaddrinfo
1945     gethrtime
1946     getopt
1947     GetProcessAffinityMask
1948     GetProcessMemoryInfo
1949     GetProcessTimes
1950     getrusage
1951     GetSystemTimeAsFileTime
1952     gettimeofday
1953     glob
1954     glXGetProcAddress
1955     gmtime_r
1956     inet_aton
1957     isatty
1958     jack_port_get_latency_range
1959     kbhit
1960     LoadLibrary
1961     localtime_r
1962     lstat
1963     lzo1x_999_compress
1964     mach_absolute_time
1965     MapViewOfFile
1966     memalign
1967     mkstemp
1968     mmap
1969     mprotect
1970     nanosleep
1971     PeekNamedPipe
1972     posix_memalign
1973     pthread_cancel
1974     sched_getaffinity
1975     SetConsoleTextAttribute
1976     SetConsoleCtrlHandler
1977     setmode
1978     setrlimit
1979     Sleep
1980     strerror_r
1981     sysconf
1982     sysctl
1983     usleep
1984     UTGetOSTypeFromString
1985     VirtualAlloc
1986     wglGetProcAddress
1987 "
1988
1989 TOOLCHAIN_FEATURES="
1990     as_dn_directive
1991     as_fpu_directive
1992     as_func
1993     as_object_arch
1994     asm_mod_q
1995     attribute_may_alias
1996     attribute_packed
1997     ebp_available
1998     ebx_available
1999     gnu_as
2000     gnu_windres
2001     ibm_asm
2002     inline_asm_direct_symbol_refs
2003     inline_asm_labels
2004     inline_asm_nonlocal_labels
2005     pragma_deprecated
2006     rsync_contimeout
2007     symver_asm_label
2008     symver_gnu_asm
2009     vfp_args
2010     xform_asm
2011     xmm_clobbers
2012 "
2013
2014 TYPES_LIST="
2015     CONDITION_VARIABLE_Ptr
2016     socklen_t
2017     struct_addrinfo
2018     struct_group_source_req
2019     struct_ip_mreq_source
2020     struct_ipv6_mreq
2021     struct_msghdr_msg_flags
2022     struct_pollfd
2023     struct_rusage_ru_maxrss
2024     struct_sctp_event_subscribe
2025     struct_sockaddr_in6
2026     struct_sockaddr_sa_len
2027     struct_sockaddr_storage
2028     struct_stat_st_mtim_tv_nsec
2029     struct_v4l2_frmivalenum_discrete
2030 "
2031
2032 HAVE_LIST="
2033     $ARCH_EXT_LIST
2034     $(add_suffix _external $ARCH_EXT_LIST)
2035     $(add_suffix _inline   $ARCH_EXT_LIST)
2036     $ARCH_FEATURES
2037     $ATOMICS_LIST
2038     $BUILTIN_LIST
2039     $COMPLEX_FUNCS
2040     $HAVE_LIST_CMDLINE
2041     $HAVE_LIST_PUB
2042     $HEADERS_LIST
2043     $INTRINSICS_LIST
2044     $MATH_FUNCS
2045     $SYSTEM_FUNCS
2046     $THREADS_LIST
2047     $TOOLCHAIN_FEATURES
2048     $TYPES_LIST
2049     alsa
2050     atomics_native
2051     dos_paths
2052     dxva2_lib
2053     dxva2api_cobj
2054     jack
2055     libc_msvcrt
2056     makeinfo
2057     makeinfo_html
2058     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2059     perl
2060     pod2man
2061     sdl2
2062     section_data_rel_ro
2063     sndio
2064     texi2html
2065     threads
2066     vaapi_drm
2067     vaapi_x11
2068     vdpau_x11
2069     winrt
2070 "
2071
2072 # options emitted with CONFIG_ prefix but not available on the command line
2073 CONFIG_EXTRA="
2074     aandcttables
2075     ac3dsp
2076     audio_frame_queue
2077     audiodsp
2078     blockdsp
2079     bswapdsp
2080     cabac
2081     dirac_parse
2082     dvprofile
2083     exif
2084     faandct
2085     faanidct
2086     fdctdsp
2087     flacdsp
2088     fmtconvert
2089     frame_thread_encoder
2090     g722dsp
2091     golomb
2092     gplv3
2093     h263dsp
2094     h264chroma
2095     h264dsp
2096     h264parse
2097     h264pred
2098     h264qpel
2099     hevcparse
2100     hpeldsp
2101     huffman
2102     huffyuvdsp
2103     huffyuvencdsp
2104     idctdsp
2105     iirfilter
2106     mdct15
2107     intrax8
2108     iso_media
2109     ividsp
2110     jpegtables
2111     lgplv3
2112     libx262
2113     llauddsp
2114     llviddsp
2115     llvidencdsp
2116     lpc
2117     lzf
2118     me_cmp
2119     mpeg_er
2120     mpegaudio
2121     mpegaudiodsp
2122     mpegaudioheader
2123     mpegvideo
2124     mpegvideoenc
2125     mss34dsp
2126     pixblockdsp
2127     qpeldsp
2128     qsv
2129     qsvdec
2130     qsvenc
2131     rangecoder
2132     riffdec
2133     riffenc
2134     rtpdec
2135     rtpenc_chain
2136     rv34dsp
2137     sinewin
2138     snappy
2139     srtp
2140     startcode
2141     texturedsp
2142     texturedspenc
2143     tpeldsp
2144     vaapi_encode
2145     vc1dsp
2146     videodsp
2147     vp3dsp
2148     vp56dsp
2149     vp8dsp
2150     vt_bt2020
2151     wma_freqs
2152     wmv2dsp
2153 "
2154
2155 CMDLINE_SELECT="
2156     $ARCH_EXT_LIST
2157     $CONFIG_LIST
2158     $HAVE_LIST_CMDLINE
2159     $THREADS_LIST
2160     asm
2161     cross_compile
2162     debug
2163     extra_warnings
2164     logging
2165     lto
2166     optimizations
2167     rpath
2168     stripping
2169 "
2170
2171 PATHS_LIST="
2172     bindir
2173     datadir
2174     docdir
2175     incdir
2176     libdir
2177     mandir
2178     pkgconfigdir
2179     prefix
2180     shlibdir
2181     install_name_dir
2182 "
2183
2184 CMDLINE_SET="
2185     $PATHS_LIST
2186     ar
2187     arch
2188     as
2189     assert_level
2190     build_suffix
2191     cc
2192     objcc
2193     cpu
2194     cross_prefix
2195     custom_allocator
2196     cxx
2197     dep_cc
2198     doxygen
2199     env
2200     extra_version
2201     gas
2202     host_cc
2203     host_cflags
2204     host_extralibs
2205     host_ld
2206     host_ldflags
2207     host_os
2208     install
2209     ld
2210     ln_s
2211     logfile
2212     malloc_prefix
2213     nm
2214     optflags
2215     pkg_config
2216     pkg_config_flags
2217     progs_suffix
2218     random_seed
2219     ranlib
2220     samples
2221     strip
2222     sws_max_filter_size
2223     sysinclude
2224     sysroot
2225     target_exec
2226     target_os
2227     target_path
2228     target_samples
2229     tempprefix
2230     toolchain
2231     valgrind
2232     yasmexe
2233 "
2234
2235 CMDLINE_APPEND="
2236     extra_cflags
2237     extra_cxxflags
2238     extra_objcflags
2239     host_cppflags
2240 "
2241
2242 # code dependency declarations
2243
2244 # architecture extensions
2245
2246 armv5te_deps="arm"
2247 armv6_deps="arm"
2248 armv6t2_deps="arm"
2249 armv8_deps="aarch64"
2250 neon_deps_any="aarch64 arm"
2251 intrinsics_neon_deps="neon"
2252 vfp_deps_any="aarch64 arm"
2253 vfpv3_deps="vfp"
2254 setend_deps="arm"
2255
2256 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2257
2258 loongson2_deps="mips"
2259 loongson3_deps="mips"
2260 mipsfpu_deps="mips"
2261 mipsdsp_deps="mips"
2262 mipsdspr2_deps="mips"
2263 mips32r2_deps="mips"
2264 mips32r5_deps="mips"
2265 mips32r6_deps="mips"
2266 mips64r2_deps="mips"
2267 mips64r6_deps="mips"
2268 msa_deps="mipsfpu"
2269 mmi_deps="mips"
2270
2271 altivec_deps="ppc"
2272 dcbzl_deps="ppc"
2273 ldbrx_deps="ppc"
2274 ppc4xx_deps="ppc"
2275 vsx_deps="altivec"
2276 power8_deps="vsx"
2277
2278 cpunop_deps="i686"
2279 x86_64_select="i686"
2280 x86_64_suggest="fast_cmov"
2281
2282 amd3dnow_deps="mmx"
2283 amd3dnowext_deps="amd3dnow"
2284 i686_deps="x86"
2285 mmx_deps="x86"
2286 mmxext_deps="mmx"
2287 sse_deps="mmxext"
2288 sse2_deps="sse"
2289 sse3_deps="sse2"
2290 ssse3_deps="sse3"
2291 sse4_deps="ssse3"
2292 sse42_deps="sse4"
2293 aesni_deps="sse42"
2294 avx_deps="sse42"
2295 xop_deps="avx"
2296 fma3_deps="avx"
2297 fma4_deps="avx"
2298 avx2_deps="avx"
2299
2300 mmx_external_deps="yasm"
2301 mmx_inline_deps="inline_asm"
2302 mmx_suggest="mmx_external mmx_inline"
2303
2304 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2305     eval dep=\$${ext}_deps
2306     eval ${ext}_external_deps='"${dep}_external"'
2307     eval ${ext}_inline_deps='"${dep}_inline"'
2308     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2309 done
2310
2311 aligned_stack_if_any="aarch64 ppc x86"
2312 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2313 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2314 fast_unaligned_if_any="aarch64 ppc x86"
2315 simd_align_16_if_any="altivec neon sse"
2316 simd_align_32_if_any="avx"
2317
2318 # system capabilities
2319 symver_if_any="symver_asm_label symver_gnu_asm"
2320 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
2321
2322 # threading support
2323 atomics_gcc_if="sync_val_compare_and_swap"
2324 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2325 atomics_win32_if="MemoryBarrier"
2326 atomics_native_if_any="$ATOMICS_LIST"
2327 w32threads_deps="atomics_native"
2328 threads_if_any="$THREADS_LIST"
2329
2330 # subsystems
2331 dct_select="rdft"
2332 dirac_parse_select="golomb"
2333 error_resilience_select="me_cmp"
2334 faandct_deps="faan fdctdsp"
2335 faanidct_deps="faan idctdsp"
2336 h264dsp_select="startcode"
2337 hevcparse_select="golomb"
2338 frame_thread_encoder_deps="encoders threads"
2339 intrax8_select="blockdsp idctdsp"
2340 mdct_select="fft"
2341 mdct15_select="fft"
2342 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2343 mpeg_er_select="error_resilience"
2344 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2345 mpegaudiodsp_select="dct"
2346 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2347 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2348 vc1dsp_select="h264chroma qpeldsp startcode"
2349 rdft_select="fft"
2350
2351 # decoders / encoders
2352 aac_decoder_select="mdct15 mdct sinewin"
2353 aac_fixed_decoder_select="mdct sinewin"
2354 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2355 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2356 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2357 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2358 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2359 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2360 adpcm_g722_decoder_select="g722dsp"
2361 adpcm_g722_encoder_select="g722dsp"
2362 aic_decoder_select="golomb idctdsp"
2363 alac_encoder_select="lpc"
2364 als_decoder_select="bswapdsp"
2365 amrnb_decoder_select="lsp"
2366 amrwb_decoder_select="lsp"
2367 amv_decoder_select="sp5x_decoder exif"
2368 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2369 ape_decoder_select="bswapdsp llauddsp"
2370 apng_decoder_select="zlib"
2371 apng_encoder_select="llvidencdsp zlib"
2372 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2373 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2374 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2375 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2376 atrac1_decoder_select="mdct sinewin"
2377 atrac3_decoder_select="mdct"
2378 atrac3p_decoder_select="mdct sinewin"
2379 avrn_decoder_select="exif jpegtables"
2380 bink_decoder_select="blockdsp hpeldsp"
2381 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2382 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2383 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2384 cllc_decoder_select="bswapdsp"
2385 comfortnoise_encoder_select="lpc"
2386 cook_decoder_select="audiodsp mdct sinewin"
2387 cscd_decoder_select="lzo"
2388 cscd_decoder_suggest="zlib"
2389 dca_decoder_select="mdct"
2390 dds_decoder_select="texturedsp"
2391 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2392 dnxhd_decoder_select="blockdsp idctdsp"
2393 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2394 dvvideo_decoder_select="dvprofile idctdsp"
2395 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2396 dxa_decoder_select="zlib"
2397 dxv_decoder_select="lzf texturedsp"
2398 eac3_decoder_select="ac3_decoder"
2399 eac3_encoder_select="ac3_encoder"
2400 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2401 eatgq_decoder_select="aandcttables"
2402 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2403 exr_decoder_select="zlib"
2404 ffv1_decoder_select="rangecoder"
2405 ffv1_encoder_select="rangecoder"
2406 ffvhuff_decoder_select="huffyuv_decoder"
2407 ffvhuff_encoder_select="huffyuv_encoder"
2408 fic_decoder_select="golomb"
2409 flac_decoder_select="flacdsp"
2410 flac_encoder_select="bswapdsp flacdsp lpc"
2411 flashsv2_decoder_select="zlib"
2412 flashsv2_encoder_select="zlib"
2413 flashsv_decoder_select="zlib"
2414 flashsv_encoder_select="zlib"
2415 flv_decoder_select="h263_decoder"
2416 flv_encoder_select="h263_encoder"
2417 fourxm_decoder_select="blockdsp bswapdsp"
2418 fraps_decoder_select="bswapdsp huffman"
2419 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2420 g729_decoder_select="audiodsp"
2421 h261_decoder_select="mpegvideo"
2422 h261_encoder_select="aandcttables mpegvideoenc"
2423 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2424 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2425 h263i_decoder_select="h263_decoder"
2426 h263p_decoder_select="h263_decoder"
2427 h263p_encoder_select="h263_encoder"
2428 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2429 h264_decoder_suggest="error_resilience"
2430 hap_decoder_select="snappy texturedsp"
2431 hap_encoder_deps="libsnappy"
2432 hap_encoder_select="texturedspenc"
2433 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2434 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2435 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2436 iac_decoder_select="imc_decoder"
2437 imc_decoder_select="bswapdsp fft mdct sinewin"
2438 indeo3_decoder_select="hpeldsp"
2439 indeo4_decoder_select="ividsp"
2440 indeo5_decoder_select="ividsp"
2441 interplay_video_decoder_select="hpeldsp"
2442 jpegls_decoder_select="mjpeg_decoder"
2443 jv_decoder_select="blockdsp"
2444 lagarith_decoder_select="llviddsp"
2445 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2446 magicyuv_decoder_select="llviddsp"
2447 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2448 metasound_decoder_select="lsp mdct sinewin"
2449 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2450 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2451 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2452 mjpegb_decoder_select="mjpeg_decoder"
2453 mlp_decoder_select="mlp_parser"
2454 motionpixels_decoder_select="bswapdsp"
2455 mp1_decoder_select="mpegaudio"
2456 mp1float_decoder_select="mpegaudio"
2457 mp2_decoder_select="mpegaudio"
2458 mp2float_decoder_select="mpegaudio"
2459 mp3_decoder_select="mpegaudio"
2460 mp3adu_decoder_select="mpegaudio"
2461 mp3adufloat_decoder_select="mpegaudio"
2462 mp3float_decoder_select="mpegaudio"
2463 mp3on4_decoder_select="mpegaudio"
2464 mp3on4float_decoder_select="mpegaudio"
2465 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2466 mpc8_decoder_select="mpegaudiodsp"
2467 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2468 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2469 mpegvideo_decoder_select="mpegvideo"
2470 mpeg1video_decoder_select="mpegvideo"
2471 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2472 mpeg2video_decoder_select="mpegvideo"
2473 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2474 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2475 mpeg4_encoder_select="h263_encoder"
2476 msa1_decoder_select="mss34dsp"
2477 mscc_decoder_select="zlib"
2478 msmpeg4v1_decoder_select="h263_decoder"
2479 msmpeg4v2_decoder_select="h263_decoder"
2480 msmpeg4v2_encoder_select="h263_encoder"
2481 msmpeg4v3_decoder_select="h263_decoder"
2482 msmpeg4v3_encoder_select="h263_encoder"
2483 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2484 mts2_decoder_select="mss34dsp"
2485 mxpeg_decoder_select="mjpeg_decoder"
2486 nellymoser_decoder_select="mdct sinewin"
2487 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2488 nuv_decoder_select="idctdsp lzo"
2489 on2avc_decoder_select="mdct"
2490 opus_decoder_deps="swresample"
2491 opus_decoder_select="mdct15"
2492 opus_encoder_select="audio_frame_queue mdct15"
2493 png_decoder_select="zlib"
2494 png_encoder_select="llvidencdsp zlib"
2495 prores_decoder_select="blockdsp idctdsp"
2496 prores_encoder_select="fdctdsp"
2497 qcelp_decoder_select="lsp"
2498 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2499 ra_144_decoder_select="audiodsp"
2500 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2501 ralf_decoder_select="golomb"
2502 rawvideo_decoder_select="bswapdsp"
2503 rscc_decoder_select="zlib"
2504 rtjpeg_decoder_select="me_cmp"
2505 rv10_decoder_select="h263_decoder"
2506 rv10_encoder_select="h263_encoder"
2507 rv20_decoder_select="h263_decoder"
2508 rv20_encoder_select="h263_encoder"
2509 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2510 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2511 screenpresso_decoder_select="zlib"
2512 shorten_decoder_select="bswapdsp"
2513 sipr_decoder_select="lsp"
2514 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2515 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2516 sonic_decoder_select="golomb rangecoder"
2517 sonic_encoder_select="golomb rangecoder"
2518 sonic_ls_encoder_select="golomb rangecoder"
2519 sp5x_decoder_select="mjpeg_decoder"
2520 srgc_decoder_select="zlib"
2521 svq1_decoder_select="hpeldsp"
2522 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2523 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2524 svq3_decoder_suggest="zlib"
2525 tak_decoder_select="audiodsp"
2526 tdsc_decoder_select="zlib mjpeg_decoder"
2527 theora_decoder_select="vp3_decoder"
2528 thp_decoder_select="mjpeg_decoder"
2529 tiff_decoder_suggest="zlib lzma"
2530 tiff_encoder_suggest="zlib"
2531 truehd_decoder_select="mlp_parser"
2532 truemotion2_decoder_select="bswapdsp"
2533 truespeech_decoder_select="bswapdsp"
2534 tscc_decoder_select="zlib"
2535 twinvq_decoder_select="mdct lsp sinewin"
2536 txd_decoder_select="texturedsp"
2537 utvideo_decoder_select="bswapdsp llviddsp"
2538 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2539 vble_decoder_select="llviddsp"
2540 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2541 vc1_qsv_decoder_deps="libmfx"
2542 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2543 vc1image_decoder_select="vc1_decoder"
2544 vorbis_decoder_select="mdct"
2545 vorbis_encoder_select="mdct"
2546 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2547 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2548 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2549 vp6a_decoder_select="vp6_decoder"
2550 vp6f_decoder_select="vp6_decoder"
2551 vp7_decoder_select="h264pred videodsp vp8dsp"
2552 vp8_decoder_select="h264pred videodsp vp8dsp"
2553 vp9_decoder_select="videodsp vp9_parser"
2554 webp_decoder_select="vp8_decoder exif"
2555 wmalossless_decoder_select="llauddsp"
2556 wmapro_decoder_select="mdct sinewin wma_freqs"
2557 wmav1_decoder_select="mdct sinewin wma_freqs"
2558 wmav1_encoder_select="mdct sinewin wma_freqs"
2559 wmav2_decoder_select="mdct sinewin wma_freqs"
2560 wmav2_encoder_select="mdct sinewin wma_freqs"
2561 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2562 wmv1_decoder_select="h263_decoder"
2563 wmv1_encoder_select="h263_encoder"
2564 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2565 wmv2_encoder_select="h263_encoder wmv2dsp"
2566 wmv3_decoder_select="vc1_decoder"
2567 wmv3image_decoder_select="wmv3_decoder"
2568 xma1_decoder_select="wmapro_decoder"
2569 xma2_decoder_select="wmapro_decoder"
2570 zerocodec_decoder_select="zlib"
2571 zlib_decoder_select="zlib"
2572 zlib_encoder_select="zlib"
2573 zmbv_decoder_select="zlib"
2574 zmbv_encoder_select="zlib"
2575
2576 # platform codecs
2577 audiotoolbox_deps="AudioToolbox_AudioToolbox_h"
2578 audiotoolbox_extralibs="-framework CoreFoundation -framework AudioToolbox -framework CoreMedia"
2579
2580 # hardware accelerators
2581 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2582 cuda_deps_any="dlopen LoadLibrary"
2583 cuvid_deps="cuda"
2584 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2585 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2586 dxva2_extralibs="-luser32"
2587 dxva2_lib_deps="dxva2"
2588 vda_framework_deps="VideoDecodeAcceleration_VDADecoder_h"
2589 vda_framework_extralibs="-framework VideoDecodeAcceleration"
2590 vda_deps="vda_framework pthreads"
2591 vda_extralibs="-framework CoreFoundation -framework QuartzCore"
2592 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2593 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2594 xvmc_deps="X11_extensions_XvMClib_h"
2595
2596 h263_vaapi_hwaccel_deps="vaapi"
2597 h263_vaapi_hwaccel_select="h263_decoder"
2598 h263_videotoolbox_hwaccel_deps="videotoolbox"
2599 h263_videotoolbox_hwaccel_select="h263_decoder"
2600 h264_cuvid_hwaccel_deps="cuda cuvid"
2601 h264_cuvid_hwaccel_select="h264_cuvid_decoder"
2602 h264_d3d11va_hwaccel_deps="d3d11va"
2603 h264_d3d11va_hwaccel_select="h264_decoder"
2604 h264_dxva2_hwaccel_deps="dxva2"
2605 h264_dxva2_hwaccel_select="h264_decoder"
2606 h264_mediacodec_hwaccel_deps="mediacodec"
2607 h264_mmal_hwaccel_deps="mmal"
2608 h264_qsv_hwaccel_deps="libmfx"
2609 h264_vaapi_hwaccel_deps="vaapi"
2610 h264_vaapi_hwaccel_select="h264_decoder"
2611 h264_vda_hwaccel_deps="vda"
2612 h264_vda_hwaccel_select="h264_decoder"
2613 h264_vda_old_hwaccel_deps="vda"
2614 h264_vda_old_hwaccel_select="h264_decoder"
2615 h264_vdpau_hwaccel_deps="vdpau"
2616 h264_vdpau_hwaccel_select="h264_decoder"
2617 h264_videotoolbox_hwaccel_deps="videotoolbox"
2618 h264_videotoolbox_hwaccel_select="h264_decoder"
2619 hevc_cuvid_hwaccel_deps="cuda cuvid"
2620 hevc_cuvid_hwaccel_select="hevc_cuvid_decoder"
2621 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2622 hevc_d3d11va_hwaccel_select="hevc_decoder"
2623 hevc_mediacodec_hwaccel_deps="mediacodec"
2624 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2625 hevc_dxva2_hwaccel_select="hevc_decoder"
2626 hevc_qsv_hwaccel_deps="libmfx"
2627 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2628 hevc_vaapi_hwaccel_select="hevc_decoder"
2629 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2630 hevc_vdpau_hwaccel_select="hevc_decoder"
2631 mjpeg_cuvid_hwaccel_deps="cuda cuvid"
2632 mjpeg_cuvid_hwaccel_select="mjpeg_cuvid_decoder"
2633 mpeg_xvmc_hwaccel_deps="xvmc"
2634 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2635 mpeg1_cuvid_hwaccel_deps="cuda cuvid"
2636 mpeg1_cuvid_hwaccel_select="mpeg1_cuvid_decoder"
2637 mpeg1_vdpau_hwaccel_deps="vdpau"
2638 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2639 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2640 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2641 mpeg1_xvmc_hwaccel_deps="xvmc"
2642 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2643 mpeg2_cuvid_hwaccel_deps="cuda cuvid"
2644 mpeg2_cuvid_hwaccel_select="mpeg2_cuvid_decoder"
2645 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2646 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2647 mpeg2_dxva2_hwaccel_deps="dxva2"
2648 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2649 mpeg2_mmal_hwaccel_deps="mmal"
2650 mpeg2_qsv_hwaccel_deps="libmfx"
2651 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2652 mpeg2_vaapi_hwaccel_deps="vaapi"
2653 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2654 mpeg2_vdpau_hwaccel_deps="vdpau"
2655 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2656 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2657 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2658 mpeg2_xvmc_hwaccel_deps="xvmc"
2659 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2660 mpeg4_cuvid_hwaccel_deps="cuda cuvid"
2661 mpeg4_cuvid_hwaccel_select="mpeg4_cuvid_decoder"
2662 mpeg4_mediacodec_hwaccel_deps="mediacodec"
2663 mpeg4_mmal_hwaccel_deps="mmal"
2664 mpeg4_vaapi_hwaccel_deps="vaapi"
2665 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2666 mpeg4_vdpau_hwaccel_deps="vdpau"
2667 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2668 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2669 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2670 vc1_cuvid_hwaccel_deps="cuda cuvid"
2671 vc1_cuvid_hwaccel_select="vc1_cuvid_decoder"
2672 vc1_d3d11va_hwaccel_deps="d3d11va"
2673 vc1_d3d11va_hwaccel_select="vc1_decoder"
2674 vc1_dxva2_hwaccel_deps="dxva2"
2675 vc1_dxva2_hwaccel_select="vc1_decoder"
2676 vc1_mmal_hwaccel_deps="mmal"
2677 vc1_qsv_hwaccel_deps="libmfx"
2678 vc1_qsv_hwaccel_select="qsvdec_vc1"
2679 vc1_vaapi_hwaccel_deps="vaapi"
2680 vc1_vaapi_hwaccel_select="vc1_decoder"
2681 vc1_vdpau_hwaccel_deps="vdpau"
2682 vc1_vdpau_hwaccel_select="vc1_decoder"
2683 vp8_cuvid_hwaccel_deps="cuda cuvid"
2684 vp8_cuvid_hwaccel_select="vp8_cuvid_decoder"
2685 vp9_cuvid_hwaccel_deps="cuda cuvid"
2686 vp9_cuvid_hwaccel_select="vp9_cuvid_decoder"
2687 vp8_mediacodec_hwaccel_deps="mediacodec"
2688 vp8_qsv_hwaccel_deps="libmfx"
2689 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2690 vp9_d3d11va_hwaccel_select="vp9_decoder"
2691 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2692 vp9_dxva2_hwaccel_select="vp9_decoder"
2693 vp9_mediacodec_hwaccel_deps="mediacodec"
2694 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2695 vp9_vaapi_hwaccel_select="vp9_decoder"
2696 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2697 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2698 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2699 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2700
2701 # hardware-accelerated codecs
2702 omx_deps="dlopen pthreads"
2703 omx_extralibs='$ldl'
2704 omx_rpi_select="omx"
2705 qsvdec_select="qsv"
2706 qsvenc_select="qsv"
2707 vaapi_encode_deps="vaapi"
2708
2709 hwupload_cuda_filter_deps="cuda"
2710 scale_npp_filter_deps="cuda libnpp"
2711
2712 nvenc_deps="cuda"
2713 nvenc_deps_any="dlopen LoadLibrary"
2714 nvenc_encoder_deps="nvenc"
2715
2716 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2717 h264_cuvid_decoder_deps="cuda cuvid"
2718 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2719 h264_mediacodec_decoder_deps="mediacodec"
2720 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2721 h264_mmal_decoder_deps="mmal"
2722 h264_nvenc_encoder_deps="nvenc"
2723 h264_omx_encoder_deps="omx"
2724 h264_qsv_decoder_deps="libmfx"
2725 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2726 h264_qsv_encoder_deps="libmfx"
2727 h264_qsv_encoder_select="qsvenc"
2728 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2729 h264_vaapi_encoder_select="vaapi_encode golomb"
2730 h264_vda_decoder_deps="vda"
2731 h264_vda_decoder_select="h264_decoder"
2732 h264_vdpau_decoder_deps="vdpau"
2733 h264_vdpau_decoder_select="h264_decoder"
2734 hevc_cuvid_decoder_deps="cuda cuvid"
2735 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2736 hevc_mediacodec_decoder_deps="mediacodec"
2737 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2738 hevc_nvenc_encoder_deps="nvenc"
2739 hevc_qsv_decoder_deps="libmfx"
2740 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2741 hevc_qsv_encoder_deps="libmfx"
2742 hevc_qsv_encoder_select="hevcparse qsvenc"
2743 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2744 hevc_vaapi_encoder_select="vaapi_encode golomb"
2745 mjpeg_cuvid_decoder_deps="cuda cuvid"
2746 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2747 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2748 mpeg1_cuvid_decoder_deps="cuda cuvid"
2749 mpeg1_vdpau_decoder_deps="vdpau"
2750 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2751 mpeg2_crystalhd_decoder_select="crystalhd"
2752 mpeg2_cuvid_decoder_deps="cuda cuvid"
2753 mpeg2_mmal_decoder_deps="mmal"
2754 mpeg2_qsv_decoder_deps="libmfx"
2755 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2756 mpeg2_qsv_encoder_deps="libmfx"
2757 mpeg2_qsv_encoder_select="qsvenc"
2758 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2759 mpeg2_vaapi_encoder_select="vaapi_encode"
2760 mpeg4_crystalhd_decoder_select="crystalhd"
2761 mpeg4_cuvid_decoder_deps="cuda cuvid"
2762 mpeg4_mediacodec_decoder_deps="mediacodec"
2763 mpeg4_mmal_decoder_deps="mmal"
2764 mpeg4_omx_encoder_deps="omx"
2765 mpeg4_vdpau_decoder_deps="vdpau"
2766 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2767 mpeg_vdpau_decoder_deps="vdpau"
2768 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2769 msmpeg4_crystalhd_decoder_select="crystalhd"
2770 nvenc_h264_encoder_select="h264_nvenc_encoder"
2771 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2772 vc1_crystalhd_decoder_select="crystalhd"
2773 vc1_cuvid_decoder_deps="cuda cuvid"
2774 vc1_mmal_decoder_deps="mmal"
2775 vc1_vdpau_decoder_deps="vdpau"
2776 vc1_vdpau_decoder_select="vc1_decoder"
2777 vp8_cuvid_decoder_deps="cuda cuvid"
2778 vp8_mediacodec_decoder_deps="mediacodec"
2779 vp8_qsv_decoder_deps="libmfx"
2780 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2781 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2782 vp8_vaapi_encoder_select="vaapi_encode"
2783 vp9_cuvid_decoder_deps="cuda cuvid"
2784 vp9_mediacodec_decoder_deps="mediacodec"
2785 wmv3_crystalhd_decoder_select="crystalhd"
2786 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2787
2788 # parsers
2789 h264_parser_select="golomb h264dsp h264parse"
2790 hevc_parser_select="hevcparse"
2791 mpegaudio_parser_select="mpegaudioheader"
2792 mpegvideo_parser_select="mpegvideo"
2793 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2794 vc1_parser_select="vc1dsp"
2795
2796 # bitstream_filters
2797 mjpeg2jpeg_bsf_select="jpegtables"
2798
2799 # external libraries
2800 aac_at_decoder_deps="audiotoolbox"
2801 ac3_at_decoder_deps="audiotoolbox"
2802 ac3_at_decoder_select="ac3_parser"
2803 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2804 alac_at_decoder_deps="audiotoolbox"
2805 amr_nb_at_decoder_deps="audiotoolbox"
2806 avisynth_deps_any="dlopen LoadLibrary"
2807 avisynth_demuxer_deps="avisynth"
2808 avisynth_demuxer_select="riffdec"
2809 eac3_at_decoder_deps="audiotoolbox"
2810 eac3_at_decoder_select="ac3_parser"
2811 gsm_ms_at_decoder_deps="audiotoolbox"
2812 ilbc_at_decoder_deps="audiotoolbox"
2813 mp1_at_decoder_deps="audiotoolbox"
2814 mp2_at_decoder_deps="audiotoolbox"
2815 mp3_at_decoder_deps="audiotoolbox"
2816 mp1_at_decoder_select="mpegaudioheader"
2817 mp2_at_decoder_select="mpegaudioheader"
2818 mp3_at_decoder_select="mpegaudioheader"
2819 pcm_alaw_at_decoder_deps="audiotoolbox"
2820 pcm_mulaw_at_decoder_deps="audiotoolbox"
2821 qdmc_at_decoder_deps="audiotoolbox"
2822 qdm2_at_decoder_deps="audiotoolbox"
2823 aac_at_encoder_deps="audiotoolbox"
2824 aac_at_encoder_select="audio_frame_queue"
2825 alac_at_encoder_deps="audiotoolbox"
2826 alac_at_encoder_select="audio_frame_queue"
2827 ilbc_at_encoder_deps="audiotoolbox"
2828 ilbc_at_encoder_select="audio_frame_queue"
2829 pcm_alaw_at_encoder_deps="audiotoolbox"
2830 pcm_alaw_at_encoder_select="audio_frame_queue"
2831 pcm_mulaw_at_encoder_deps="audiotoolbox"
2832 pcm_mulaw_at_encoder_select="audio_frame_queue"
2833 chromaprint_muxer_deps="chromaprint"
2834 h264_videotoolbox_encoder_deps="videotoolbox_encoder pthreads"
2835 libcelt_decoder_deps="libcelt"
2836 libfdk_aac_decoder_deps="libfdk_aac"
2837 libfdk_aac_encoder_deps="libfdk_aac"
2838 libfdk_aac_encoder_select="audio_frame_queue"
2839 libgme_demuxer_deps="libgme"
2840 libgsm_decoder_deps="libgsm"
2841 libgsm_encoder_deps="libgsm"
2842 libgsm_ms_decoder_deps="libgsm"
2843 libgsm_ms_encoder_deps="libgsm"
2844 libilbc_decoder_deps="libilbc"
2845 libilbc_encoder_deps="libilbc"
2846 libkvazaar_encoder_deps="libkvazaar"
2847 libmodplug_demuxer_deps="libmodplug"
2848 libmp3lame_encoder_deps="libmp3lame"
2849 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2850 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2851 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2852 libopencore_amrnb_encoder_select="audio_frame_queue"
2853 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2854 libopenh264_decoder_deps="libopenh264"
2855 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2856 libopenh264_encoder_deps="libopenh264"
2857 libopenjpeg_decoder_deps="libopenjpeg"
2858 libopenjpeg_encoder_deps="libopenjpeg"
2859 libopenmpt_demuxer_deps="libopenmpt"
2860 libopus_decoder_deps="libopus"
2861 libopus_encoder_deps="libopus"
2862 libopus_encoder_select="audio_frame_queue"
2863 libschroedinger_decoder_deps="libschroedinger"
2864 libschroedinger_encoder_deps="libschroedinger"
2865 libshine_encoder_deps="libshine"
2866 libshine_encoder_select="audio_frame_queue"
2867 libspeex_decoder_deps="libspeex"
2868 libspeex_encoder_deps="libspeex"
2869 libspeex_encoder_select="audio_frame_queue"
2870 libtheora_encoder_deps="libtheora"
2871 libtwolame_encoder_deps="libtwolame"
2872 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2873 libvorbis_decoder_deps="libvorbis"
2874 libvorbis_encoder_deps="libvorbis"
2875 libvorbis_encoder_select="audio_frame_queue"
2876 libvpx_vp8_decoder_deps="libvpx"
2877 libvpx_vp8_encoder_deps="libvpx"
2878 libvpx_vp9_decoder_deps="libvpx"
2879 libvpx_vp9_encoder_deps="libvpx"
2880 libwavpack_encoder_deps="libwavpack"
2881 libwavpack_encoder_select="audio_frame_queue"
2882 libwebp_encoder_deps="libwebp"
2883 libwebp_anim_encoder_deps="libwebp"
2884 libx262_encoder_deps="libx262"
2885 libx264_encoder_deps="libx264"
2886 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2887 libx264rgb_encoder_select="libx264_encoder"
2888 libx265_encoder_deps="libx265"
2889 libxavs_encoder_deps="libxavs"
2890 libxvid_encoder_deps="libxvid"
2891 libzvbi_teletext_decoder_deps="libzvbi"
2892 videotoolbox_deps="VideoToolbox_VideoToolbox_h"
2893 videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework CoreVideo"
2894 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2895 videotoolbox_encoder_suggest="vda_framework vt_bt2020"
2896 vt_bt2020_deps="kCVImageBufferColorPrimaries_ITU_R_2020"
2897
2898 # demuxers / muxers
2899 ac3_demuxer_select="ac3_parser"
2900 aiff_muxer_select="iso_media"
2901 asf_demuxer_select="riffdec"
2902 asf_o_demuxer_select="riffdec"
2903 asf_muxer_select="riffenc"
2904 asf_stream_muxer_select="asf_muxer"
2905 avi_demuxer_select="iso_media riffdec exif"
2906 avi_muxer_select="riffenc"
2907 caf_demuxer_select="iso_media riffdec"
2908 caf_muxer_select="iso_media"
2909 dash_muxer_select="mp4_muxer"
2910 dirac_demuxer_select="dirac_parser"
2911 dts_demuxer_select="dca_parser"
2912 dtshd_demuxer_select="dca_parser"
2913 dv_demuxer_select="dvprofile"
2914 dv_muxer_select="dvprofile"
2915 dxa_demuxer_select="riffdec"
2916 eac3_demuxer_select="ac3_parser"
2917 f4v_muxer_select="mov_muxer"
2918 fifo_muxer_deps="threads"
2919 flac_demuxer_select="flac_parser"
2920 hds_muxer_select="flv_muxer"
2921 hls_muxer_select="mpegts_muxer"
2922 image2_alias_pix_demuxer_select="image2_demuxer"
2923 image2_brender_pix_demuxer_select="image2_demuxer"
2924 ipod_muxer_select="mov_muxer"
2925 ismv_muxer_select="mov_muxer"
2926 libnut_demuxer_deps="libnut"
2927 libnut_muxer_deps="libnut"
2928 matroska_audio_muxer_select="matroska_muxer"
2929 matroska_demuxer_select="iso_media riffdec"
2930 matroska_demuxer_suggest="bzlib lzo zlib"
2931 matroska_muxer_select="iso_media riffenc"
2932 mmf_muxer_select="riffenc"
2933 mov_demuxer_select="iso_media riffdec"
2934 mov_demuxer_suggest="zlib"
2935 mov_muxer_select="iso_media riffenc rtpenc_chain"
2936 mp3_demuxer_select="mpegaudio_parser"
2937 mp3_muxer_select="mpegaudioheader"
2938 mp4_muxer_select="mov_muxer"
2939 mpegts_demuxer_select="iso_media"
2940 mpegts_muxer_select="adts_muxer latm_muxer"
2941 mpegtsraw_demuxer_select="mpegts_demuxer"
2942 mxf_d10_muxer_select="mxf_muxer"
2943 mxf_opatom_muxer_select="mxf_muxer"
2944 nut_muxer_select="riffenc"
2945 nuv_demuxer_select="riffdec"
2946 oga_muxer_select="ogg_muxer"
2947 ogg_demuxer_select="dirac_parse"
2948 ogv_muxer_select="ogg_muxer"
2949 opus_muxer_select="ogg_muxer"
2950 psp_muxer_select="mov_muxer"
2951 rtp_demuxer_select="sdp_demuxer"
2952 rtp_muxer_select="golomb"
2953 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2954 rtsp_demuxer_select="http_protocol rtpdec"
2955 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2956 sap_demuxer_select="sdp_demuxer"
2957 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2958 sdp_demuxer_select="rtpdec"
2959 smoothstreaming_muxer_select="ismv_muxer"
2960 spdif_muxer_select="aac_parser"
2961 spx_muxer_select="ogg_muxer"
2962 swf_demuxer_suggest="zlib"
2963 tak_demuxer_select="tak_parser"
2964 tg2_muxer_select="mov_muxer"
2965 tgp_muxer_select="mov_muxer"
2966 vobsub_demuxer_select="mpegps_demuxer"
2967 w64_demuxer_select="wav_demuxer"
2968 w64_muxer_select="wav_muxer"
2969 wav_demuxer_select="riffdec"
2970 wav_muxer_select="riffenc"
2971 webm_muxer_select="iso_media riffenc"
2972 webm_dash_manifest_demuxer_select="matroska_demuxer"
2973 wtv_demuxer_select="mpegts_demuxer riffdec"
2974 wtv_muxer_select="mpegts_muxer riffenc"
2975 xmv_demuxer_select="riffdec"
2976 xwma_demuxer_select="riffdec"
2977
2978 # indevs / outdevs
2979 alsa_indev_deps="alsa"
2980 alsa_outdev_deps="alsa"
2981 avfoundation_indev_deps="pthreads"
2982 avfoundation_indev_extralibs="-framework Foundation -framework AVFoundation -framework CoreVideo -framework CoreMedia"
2983 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2984 caca_outdev_deps="libcaca"
2985 decklink_indev_deps="decklink threads"
2986 decklink_indev_extralibs="-lstdc++"
2987 decklink_outdev_deps="decklink threads"
2988 decklink_outdev_extralibs="-lstdc++"
2989 dshow_indev_deps="IBaseFilter"
2990 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
2991 dv1394_indev_deps="dv1394"
2992 dv1394_indev_select="dv_demuxer"
2993 fbdev_indev_deps="linux_fb_h"
2994 fbdev_outdev_deps="linux_fb_h"
2995 gdigrab_indev_deps="CreateDIBSection"
2996 gdigrab_indev_extralibs="-lgdi32"
2997 gdigrab_indev_select="bmp_decoder"
2998 iec61883_indev_deps="libiec61883"
2999 jack_indev_deps="jack"
3000 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3001 lavfi_indev_deps="avfilter"
3002 libcdio_indev_deps="libcdio"
3003 libdc1394_indev_deps="libdc1394"
3004 libv4l2_indev_deps="libv4l2"
3005 openal_indev_deps="openal"
3006 opengl_outdev_deps="opengl"
3007 oss_indev_deps_any="soundcard_h sys_soundcard_h"
3008 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
3009 pulse_indev_deps="libpulse"
3010 pulse_outdev_deps="libpulse"
3011 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
3012 qtkit_indev_select="qtkit"
3013 sdl2_outdev_deps="sdl2"
3014 sndio_indev_deps="sndio"
3015 sndio_outdev_deps="sndio"
3016 v4l_indev_deps="linux_videodev_h"
3017 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3018 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3019 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
3020 vfwcap_indev_extralibs="-lavicap32"
3021 xcbgrab_indev_deps="libxcb"
3022 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3023 xv_outdev_extralibs="-lXv -lX11 -lXext"
3024
3025 # protocols
3026 async_protocol_deps="threads"
3027 bluray_protocol_deps="libbluray"
3028 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
3029 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3030 ffrtmpcrypt_protocol_select="tcp_protocol"
3031 ffrtmphttp_protocol_deps="!librtmp_protocol"
3032 ffrtmphttp_protocol_select="http_protocol"
3033 ftp_protocol_select="tcp_protocol"
3034 gopher_protocol_select="network"
3035 http_protocol_select="tcp_protocol"
3036 httpproxy_protocol_select="tcp_protocol"
3037 https_protocol_select="tls_protocol"
3038 icecast_protocol_select="http_protocol"
3039 librtmp_protocol_deps="librtmp"
3040 librtmpe_protocol_deps="librtmp"
3041 librtmps_protocol_deps="librtmp"
3042 librtmpt_protocol_deps="librtmp"
3043 librtmpte_protocol_deps="librtmp"
3044 libsmbclient_protocol_deps="libsmbclient gplv3"
3045 libssh_protocol_deps="libssh"
3046 mmsh_protocol_select="http_protocol"
3047 mmst_protocol_select="network"
3048 rtmp_protocol_deps="!librtmp_protocol"
3049 rtmp_protocol_select="tcp_protocol"
3050 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3051 rtmps_protocol_deps="!librtmp_protocol"
3052 rtmps_protocol_select="tls_protocol"
3053 rtmpt_protocol_select="ffrtmphttp_protocol"
3054 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3055 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3056 rtp_protocol_select="udp_protocol"
3057 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3058 sctp_protocol_select="network"
3059 srtp_protocol_select="rtp_protocol srtp"
3060 tcp_protocol_select="network"
3061 tls_gnutls_protocol_deps="gnutls !tls_schannel_protocol !tls_securetransport_protocol"
3062 tls_gnutls_protocol_select="tcp_protocol"
3063 tls_openssl_protocol_deps="openssl !tls_schannel_protocol !tls_securetransport_protocol !tls_gnutls_protocol"
3064 tls_openssl_protocol_select="tcp_protocol"
3065 tls_schannel_protocol_deps="schannel"
3066 tls_schannel_protocol_select="tcp_protocol"
3067 tls_securetransport_protocol_deps="securetransport"
3068 tls_securetransport_protocol_select="tcp_protocol"
3069 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
3070 udp_protocol_select="network"
3071 udplite_protocol_select="network"
3072 unix_protocol_deps="sys_un_h"
3073 unix_protocol_select="network"
3074
3075 # filters
3076 afftfilt_filter_deps="avcodec"
3077 afftfilt_filter_select="fft"
3078 amovie_filter_deps="avcodec avformat"
3079 aresample_filter_deps="swresample"
3080 ass_filter_deps="libass"
3081 atempo_filter_deps="avcodec"
3082 atempo_filter_select="rdft"
3083 azmq_filter_deps="libzmq"
3084 blackframe_filter_deps="gpl"
3085 boxblur_filter_deps="gpl"
3086 bs2b_filter_deps="libbs2b"
3087 colormatrix_filter_deps="gpl"
3088 cover_rect_filter_deps="avcodec avformat gpl"
3089 cropdetect_filter_deps="gpl"
3090 deinterlace_qsv_filter_deps="libmfx"
3091 deinterlace_vaapi_filter_deps="vaapi"
3092 delogo_filter_deps="gpl"
3093 deshake_filter_select="pixelutils"
3094 drawtext_filter_deps="libfreetype"
3095 eq_filter_deps="gpl"
3096 fftfilt_filter_deps="avcodec"
3097 fftfilt_filter_select="rdft"
3098 find_rect_filter_deps="avcodec avformat gpl"
3099 firequalizer_filter_deps="avcodec"
3100 firequalizer_filter_select="rdft"
3101 flite_filter_deps="libflite"
3102 framerate_filter_select="pixelutils"
3103 frei0r_filter_deps="frei0r dlopen"
3104 frei0r_src_filter_deps="frei0r dlopen"
3105 fspp_filter_deps="gpl"
3106 geq_filter_deps="gpl"
3107 histeq_filter_deps="gpl"
3108 hqdn3d_filter_deps="gpl"
3109 interlace_filter_deps="gpl"
3110 kerndeint_filter_deps="gpl"
3111 ladspa_filter_deps="ladspa dlopen"
3112 mcdeint_filter_deps="avcodec gpl"
3113 movie_filter_deps="avcodec avformat"
3114 mpdecimate_filter_deps="gpl"
3115 mpdecimate_filter_select="pixelutils"
3116 mptestsrc_filter_deps="gpl"
3117 negate_filter_deps="lut_filter"
3118 nnedi_filter_deps="gpl"
3119 ocr_filter_deps="libtesseract"
3120 ocv_filter_deps="libopencv"
3121 owdenoise_filter_deps="gpl"
3122 pan_filter_deps="swresample"
3123 perspective_filter_deps="gpl"
3124 phase_filter_deps="gpl"
3125 pp7_filter_deps="gpl"
3126 pp_filter_deps="gpl postproc"
3127 pullup_filter_deps="gpl"
3128 removelogo_filter_deps="avcodec avformat swscale"
3129 repeatfields_filter_deps="gpl"
3130 resample_filter_deps="avresample"
3131 rubberband_filter_deps="librubberband"
3132 sab_filter_deps="gpl swscale"
3133 scale2ref_filter_deps="swscale"
3134 scale_filter_deps="swscale"
3135 scale_qsv_filter_deps="libmfx"
3136 select_filter_select="pixelutils"
3137 showcqt_filter_deps="avcodec avformat swscale"
3138 showcqt_filter_select="fft"
3139 showfreqs_filter_deps="avcodec"
3140 showfreqs_filter_select="fft"
3141 showspectrum_filter_deps="avcodec"
3142 showspectrum_filter_select="fft"
3143 showspectrumpic_filter_deps="avcodec"
3144 showspectrumpic_filter_select="fft"
3145 signature_filter_deps="gpl avcodec avformat"
3146 smartblur_filter_deps="gpl swscale"
3147 sofalizer_filter_deps="netcdf avcodec"
3148 sofalizer_filter_select="fft"
3149 spectrumsynth_filter_deps="avcodec"
3150 spectrumsynth_filter_select="fft"
3151 spp_filter_deps="gpl avcodec"
3152 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3153 stereo3d_filter_deps="gpl"
3154 subtitles_filter_deps="avformat avcodec libass"
3155 super2xsai_filter_deps="gpl"
3156 pixfmts_super2xsai_test_deps="super2xsai_filter"
3157 tinterlace_filter_deps="gpl"
3158 tinterlace_merge_test_deps="tinterlace_filter"
3159 tinterlace_pad_test_deps="tinterlace_filter"
3160 uspp_filter_deps="gpl avcodec"
3161 vaguedenoiser_filter_deps="gpl"
3162 vidstabdetect_filter_deps="libvidstab"
3163 vidstabtransform_filter_deps="libvidstab"
3164 zmq_filter_deps="libzmq"
3165 zoompan_filter_deps="swscale"
3166 zscale_filter_deps="libzimg"
3167 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3168
3169 # examples
3170 avio_dir_cmd_deps="avformat avutil"
3171 avio_reading_deps="avformat avcodec avutil"
3172 decode_audio_example_deps="avcodec avutil"
3173 decode_video_example_deps="avcodec avutil"
3174 demuxing_decoding_example_deps="avcodec avformat avutil"
3175 encode_audio_example_deps="avcodec avutil"
3176 encode_video_example_deps="avcodec avutil"
3177 extract_mvs_example_deps="avcodec avformat avutil"
3178 filter_audio_example_deps="avfilter avutil"
3179 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3180 filtering_video_example_deps="avfilter avcodec avformat avutil"
3181 http_multiclient_example_deps="avformat avutil fork"
3182 metadata_example_deps="avformat avutil"
3183 muxing_example_deps="avcodec avformat avutil swscale"
3184 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3185 remuxing_example_deps="avcodec avformat avutil"
3186 resampling_audio_example_deps="avutil swresample"
3187 scaling_video_example_deps="avutil swscale"
3188 transcode_aac_example_deps="avcodec avformat swresample"
3189 transcoding_example_deps="avfilter avcodec avformat avutil"
3190
3191 # libraries, in linking order
3192 avcodec_deps="avutil"
3193 avcodec_select="null_bsf"
3194 avdevice_deps="avformat avcodec avutil"
3195 avfilter_deps="avutil"
3196 avformat_deps="avcodec avutil"
3197 avresample_deps="avutil"
3198 postproc_deps="avutil gpl"
3199 swresample_deps="avutil"
3200 swscale_deps="avutil"
3201
3202 # programs
3203 ffmpeg_deps="avcodec avfilter avformat swresample"
3204 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3205                null_filter
3206                trim_filter"
3207 ffplay_deps="avcodec avformat swscale swresample sdl2"
3208 ffplay_extralibs='$sdl2_extralibs'
3209 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3210 ffprobe_deps="avcodec avformat"
3211 ffserver_deps="avformat fork sarestart"
3212 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3213
3214 # documentation
3215 podpages_deps="perl"
3216 manpages_deps="perl pod2man"
3217 htmlpages_deps="perl"
3218 htmlpages_deps_any="makeinfo_html texi2html"
3219 txtpages_deps="perl makeinfo"
3220 doc_deps_any="manpages htmlpages podpages txtpages"
3221
3222 # default parameters
3223
3224 logfile="config.log"
3225
3226 # installation paths
3227 prefix_default="/usr/local"
3228 bindir_default='${prefix}/bin'
3229 datadir_default='${prefix}/share/ffmpeg'
3230 docdir_default='${prefix}/share/doc/ffmpeg'
3231 incdir_default='${prefix}/include'
3232 libdir_default='${prefix}/lib'
3233 mandir_default='${prefix}/share/man'
3234
3235 # toolchain
3236 ar_default="ar"
3237 cc_default="gcc"
3238 cxx_default="g++"
3239 host_cc_default="gcc"
3240 doxygen_default="doxygen"
3241 install="install"
3242 ln_s_default="ln -s -f"
3243 nm_default="nm -g"
3244 objformat="elf"
3245 pkg_config_default=pkg-config
3246 ranlib_default="ranlib"
3247 strip_default="strip"
3248 version_script='--version-script'
3249 yasmexe_default="yasm"
3250 windres_default="windres"
3251
3252 # OS
3253 target_os_default=$(tolower $(uname -s))
3254 host_os=$target_os_default
3255
3256 # machine
3257 if test "$target_os_default" = aix; then
3258     arch_default=$(uname -p)
3259     strip_default="strip -X32_64"
3260 else
3261     arch_default=$(uname -m)
3262 fi
3263 cpu="generic"
3264 intrinsics="none"
3265
3266 # configurable options
3267 enable $PROGRAM_LIST
3268 enable $DOCUMENT_LIST
3269 enable $EXAMPLE_LIST
3270 enable $(filter_out avresample $LIBRARY_LIST)
3271 enable stripping
3272
3273 enable asm
3274 enable debug
3275 enable doc
3276 enable faan faandct faanidct
3277 enable optimizations
3278 enable runtime_cpudetect
3279 enable safe_bitstream_reader
3280 enable static
3281 enable swscale_alpha
3282 enable valgrind_backtrace
3283
3284 sws_max_filter_size_default=256
3285 set_default sws_max_filter_size
3286
3287 # build settings
3288 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3289 LIBPREF="lib"
3290 LIBSUF=".a"
3291 FULLNAME='$(NAME)$(BUILDSUF)'
3292 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3293 SLIBPREF="lib"
3294 SLIBSUF=".so"
3295 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3296 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3297 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3298 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3299 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3300 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3301 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3302
3303 asflags_filter=echo
3304 cflags_filter=echo
3305 ldflags_filter=echo
3306
3307 AS_C='-c'
3308 AS_O='-o $@'
3309 CC_C='-c'
3310 CC_E='-E -o $@'
3311 CC_O='-o $@'
3312 CXX_C='-c'
3313 CXX_O='-o $@'
3314 OBJCC_C='-c'
3315 OBJCC_E='-E -o $@'
3316 OBJCC_O='-o $@'
3317 LD_O='-o $@'
3318 LD_LIB='-l%'
3319 LD_PATH='-L'
3320 HOSTCC_C='-c'
3321 HOSTCC_E='-E -o $@'
3322 HOSTCC_O='-o $@'
3323 HOSTLD_O='-o $@'
3324
3325 host_extralibs='-lm'
3326 host_cflags_filter=echo
3327 host_ldflags_filter=echo
3328
3329 target_path='$(CURDIR)'
3330
3331 # since the object filename is not given with the -MM flag, the compiler
3332 # is only able to print the basename, and we must add the path ourselves
3333 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3334 DEPFLAGS='-MM'
3335
3336 # find source path
3337 if test -f configure; then
3338     source_path=.
3339 else
3340     source_path=$(cd $(dirname "$0"); pwd)
3341     case "$source_path" in
3342         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3343     esac
3344     test -e "$source_path/config.h" &&
3345         die "Out of tree builds are impossible with config.h in source dir."
3346 fi
3347
3348 for v in "$@"; do
3349     r=${v#*=}
3350     l=${v%"$r"}
3351     r=$(sh_quote "$r")
3352     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3353 done
3354
3355 find_things(){
3356     thing=$1
3357     pattern=$2
3358     file=$source_path/$3
3359     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3360 }
3361
3362 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3363 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3364 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3365 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3366 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3367 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3368 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3369 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3370 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3371
3372 find_things_extern(){
3373     thing=$1
3374     pattern=$2
3375     file=$source_path/$3
3376     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3377 }
3378
3379 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3380 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3381
3382 ALL_COMPONENTS="
3383     $BSF_LIST
3384     $DECODER_LIST
3385     $DEMUXER_LIST
3386     $ENCODER_LIST
3387     $FILTER_LIST
3388     $HWACCEL_LIST
3389     $INDEV_LIST
3390     $MUXER_LIST
3391     $OUTDEV_LIST
3392     $PARSER_LIST
3393     $PROTOCOL_LIST
3394 "
3395
3396 for n in $COMPONENT_LIST; do
3397     v=$(toupper ${n%s})_LIST
3398     eval enable \$$v
3399     eval ${n}_if_any="\$$v"
3400 done
3401
3402 enable $ARCH_EXT_LIST
3403
3404 die_unknown(){
3405     echo "Unknown option \"$1\"."
3406     echo "See $0 --help for available options."
3407     exit 1
3408 }
3409
3410 print_in_columns() {
3411     cols=$(expr $ncols / 24)
3412     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3413 }
3414
3415 show_list() {
3416     suffix=_$1
3417     shift
3418     echo $* | sed s/$suffix//g | print_in_columns
3419     exit 0
3420 }
3421
3422 rand_list(){
3423     IFS=', '
3424     set -- $*
3425     unset IFS
3426     for thing; do
3427         comp=${thing%:*}
3428         prob=${thing#$comp}
3429         prob=${prob#:}
3430         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3431         echo "prob ${prob:-0.5}"
3432         printf '%s\n' $comp
3433     done
3434 }
3435
3436 do_random(){
3437     action=$1
3438     shift
3439     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3440     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3441 }
3442
3443 for opt do
3444     optval="${opt#*=}"
3445     case "$opt" in
3446         --extra-ldflags=*)
3447             add_ldflags $optval
3448         ;;
3449         --extra-ldexeflags=*)
3450             add_ldexeflags $optval
3451         ;;
3452         --extra-ldlibflags=*)
3453             add_ldlibflags $optval
3454         ;;
3455         --extra-libs=*)
3456             add_extralibs $optval
3457         ;;
3458         --disable-devices)
3459             disable $INDEV_LIST $OUTDEV_LIST
3460         ;;
3461         --enable-debug=*)
3462             debuglevel="$optval"
3463         ;;
3464         --disable-programs)
3465             disable $PROGRAM_LIST
3466         ;;
3467         --disable-everything)
3468             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3469         ;;
3470         --disable-all)
3471             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3472             disable $LIBRARY_LIST $PROGRAM_LIST doc
3473             enable avutil
3474         ;;
3475         --enable-random|--disable-random)
3476             action=${opt%%-random}
3477             do_random ${action#--} $COMPONENT_LIST
3478         ;;
3479         --enable-random=*|--disable-random=*)
3480             action=${opt%%-random=*}
3481             do_random ${action#--} $optval
3482         ;;
3483         --enable-*=*|--disable-*=*)
3484             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3485             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3486             eval list=\$$(toupper $thing)_LIST
3487             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3488             list=$(filter "$name" $list)
3489             [ "$list" = "" ] && warn "Option $opt did not match anything"
3490             $action $list
3491         ;;
3492         --enable-?*|--disable-?*)
3493             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3494             if is_in $option $COMPONENT_LIST; then
3495                 test $action = disable && action=unset
3496                 eval $action \$$(toupper ${option%s})_LIST
3497             elif is_in $option $CMDLINE_SELECT; then
3498                 $action $option
3499             else
3500                 die_unknown $opt
3501             fi
3502         ;;
3503         --list-*)
3504             NAME="${opt#--list-}"
3505             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3506             NAME=${NAME%s}
3507             eval show_list $NAME \$$(toupper $NAME)_LIST
3508         ;;
3509         --help|-h) show_help
3510         ;;
3511         --quiet|-q) quiet=yes
3512         ;;
3513         --fatal-warnings) enable fatal_warnings
3514         ;;
3515         --libfuzzer=*)
3516             libfuzzer_path="$optval"
3517         ;;
3518         *)
3519             optname="${opt%%=*}"
3520             optname="${optname#--}"
3521             optname=$(echo "$optname" | sed 's/-/_/g')
3522             if is_in $optname $CMDLINE_SET; then
3523                 eval $optname='$optval'
3524             elif is_in $optname $CMDLINE_APPEND; then
3525                 append $optname "$optval"
3526             else
3527                 die_unknown $opt
3528             fi
3529         ;;
3530     esac
3531 done
3532
3533 for e in $env; do
3534     eval "export $e"
3535 done
3536
3537 # Mark specifically enabled, but normally autodetected libraries as requested.
3538 for lib in $AUTODETECT_LIBS; do
3539     enabled $lib && request $lib
3540 done
3541
3542 # Enable platform codecs by default.
3543 enable_weak audiotoolbox
3544
3545 # Enable hwaccels by default.
3546 enable_weak d3d11va dxva2 vaapi vda vdpau videotoolbox_hwaccel xvmc
3547 enable_weak xlib
3548
3549 enable_weak cuda cuvid nvenc vda_framework videotoolbox videotoolbox_encoder
3550
3551 disabled logging && logfile=/dev/null
3552
3553 die_license_disabled() {
3554     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3555 }
3556
3557 die_license_disabled_gpl() {
3558     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3559 }
3560
3561 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3562 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3563
3564 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3565 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3566
3567 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3568
3569 # Disable all the library-specific components if the library itself
3570 # is disabled, see AVCODEC_LIST and following _LIST variables.
3571
3572 disable_components(){
3573     disabled ${1} && disable $(
3574         eval components="\$$(toupper ${1})_COMPONENTS"
3575         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3576     )
3577 }
3578
3579 map 'disable_components $v' $LIBRARY_LIST
3580
3581 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3582 set >> $logfile
3583
3584 test -n "$valgrind" && toolchain="valgrind-memcheck"
3585
3586 enabled ossfuzz && {
3587     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
3588     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
3589 }
3590
3591 case "$toolchain" in
3592     *-asan)
3593         cc_default="${toolchain%-asan}"
3594         add_cflags  -fsanitize=address
3595         add_ldflags -fsanitize=address
3596     ;;
3597     *-msan)
3598         cc_default="${toolchain%-msan}"
3599         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3600         add_ldflags -fsanitize=memory
3601     ;;
3602     *-tsan)
3603         cc_default="${toolchain%-tsan}"
3604         add_cflags  -fsanitize=thread -fPIE
3605         add_ldflags -fsanitize=thread -pie
3606         case "$toolchain" in
3607             gcc-tsan)
3608                 add_cflags  -fPIC
3609                 add_ldflags -fPIC
3610                 ;;
3611         esac
3612     ;;
3613     *-usan)
3614         cc_default="${toolchain%-usan}"
3615         add_cflags  -fsanitize=undefined
3616         add_ldflags -fsanitize=undefined
3617     ;;
3618     valgrind-*)
3619         target_exec_default="valgrind"
3620         case "$toolchain" in
3621             valgrind-massif)
3622                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3623                 ;;
3624             valgrind-memcheck)
3625                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3626                 ;;
3627         esac
3628     ;;
3629     msvc)
3630         # Check whether the current MSVC version needs the C99 converter.
3631         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3632         # support enough of C99 to build ffmpeg. Default to the new
3633         # behaviour if the regexp was unable to match anything, since this
3634         # successfully parses the version number of existing supported
3635         # versions that require the converter (MSVC 2010 and 2012).
3636         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3637         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3638             cc_default="cl"
3639             cxx_default="cl"
3640         else
3641             cc_default="c99wrap cl"
3642             cxx_default="c99wrap cl"
3643         fi
3644         ld_default="$source_path/compat/windows/mslink"
3645         nm_default="dumpbin -symbols"
3646         ar_default="lib"
3647         case "$arch" in
3648         arm*)
3649             as_default="armasm"
3650             ;;
3651         esac
3652         target_os_default="win32"
3653         # Use a relative path for TMPDIR. This makes sure all the
3654         # ffconf temp files are written with a relative path, avoiding
3655         # issues with msys/win32 path conversion for MSVC parameters
3656         # such as -Fo<file> or -out:<file>.
3657         TMPDIR=.
3658     ;;
3659     icl)
3660         cc_default="icl"
3661         ld_default="xilink"
3662         nm_default="dumpbin -symbols"
3663         ar_default="xilib"
3664         target_os_default="win32"
3665         TMPDIR=.
3666     ;;
3667     gcov)
3668         add_cflags  -fprofile-arcs -ftest-coverage
3669         add_ldflags -fprofile-arcs -ftest-coverage
3670     ;;
3671     llvm-cov)
3672         add_cflags -fprofile-arcs -ftest-coverage
3673         add_ldflags --coverage
3674     ;;
3675     hardened)
3676         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3677         add_cflags   -fno-strict-overflow -fstack-protector-all
3678         add_ldflags  -Wl,-z,relro -Wl,-z,now
3679         add_cflags   -fPIE
3680         add_ldexeflags -fPIE -pie
3681     ;;
3682     ?*)
3683         die "Unknown toolchain $toolchain"
3684     ;;
3685 esac
3686
3687 test -n "$cross_prefix" && enable cross_compile
3688
3689 if enabled cross_compile; then
3690     test -n "$arch" && test -n "$target_os" ||
3691         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3692 fi
3693
3694 ar_default="${cross_prefix}${ar_default}"
3695 cc_default="${cross_prefix}${cc_default}"
3696 cxx_default="${cross_prefix}${cxx_default}"
3697 nm_default="${cross_prefix}${nm_default}"
3698 pkg_config_default="${cross_prefix}${pkg_config_default}"
3699 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3700     ranlib_default="${cross_prefix}${ranlib_default} -D"
3701 else
3702     ranlib_default="${cross_prefix}${ranlib_default}"
3703 fi
3704 strip_default="${cross_prefix}${strip_default}"
3705 windres_default="${cross_prefix}${windres_default}"
3706
3707 sysinclude_default="${sysroot}/usr/include"
3708
3709 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3710     target_exec target_os yasmexe
3711 enabled cross_compile || host_cc_default=$cc
3712 set_default host_cc
3713
3714 pkg_config_fail_message=""
3715 if ! $pkg_config --version >/dev/null 2>&1; then
3716     warn "$pkg_config not found, library detection may fail."
3717     pkg_config=false
3718 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3719     pkg_config_fail_message="
3720 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3721 fi
3722
3723 if test $doxygen != $doxygen_default && \
3724   ! $doxygen --version >/dev/null 2>&1; then
3725     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3726 fi
3727
3728 exesuf() {
3729     case $1 in
3730         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3731     esac
3732 }
3733
3734 EXESUF=$(exesuf $target_os)
3735 HOSTEXESUF=$(exesuf $host_os)
3736
3737 # set temporary file name
3738 : ${TMPDIR:=$TEMPDIR}
3739 : ${TMPDIR:=$TMP}
3740 : ${TMPDIR:=/tmp}
3741
3742 if [ -n "$tempprefix" ] ; then
3743     mktemp(){
3744         echo $tempprefix.${HOSTNAME}.${UID}
3745     }
3746 elif ! check_cmd mktemp -u XXXXXX; then
3747     # simple replacement for missing mktemp
3748     # NOT SAFE FOR GENERAL USE
3749     mktemp(){
3750         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3751     }
3752 fi
3753
3754 tmpfile(){
3755     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3756         (set -C; exec > $tmp) 2>/dev/null ||
3757         die "Unable to create temporary file in $TMPDIR."
3758     append TMPFILES $tmp
3759     eval $1=$tmp
3760 }
3761
3762 trap 'rm -f -- $TMPFILES' EXIT
3763
3764 tmpfile TMPASM .asm
3765 tmpfile TMPC   .c
3766 tmpfile TMPCPP .cpp
3767 tmpfile TMPE   $EXESUF
3768 tmpfile TMPH   .h
3769 tmpfile TMPM   .m
3770 tmpfile TMPO   .o
3771 tmpfile TMPS   .S
3772 tmpfile TMPSH  .sh
3773 tmpfile TMPV   .ver
3774
3775 unset -f mktemp
3776
3777 chmod +x $TMPE
3778
3779 # make sure we can execute files in $TMPDIR
3780 cat > $TMPSH 2>> $logfile <<EOF
3781 #! /bin/sh
3782 EOF
3783 chmod +x $TMPSH >> $logfile 2>&1
3784 if ! $TMPSH >> $logfile 2>&1; then
3785     cat <<EOF
3786 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3787 variable to another directory and make sure that it is not mounted noexec.
3788 EOF
3789     die "Sanity test failed."
3790 fi
3791
3792 armasm_flags(){
3793     for flag; do
3794         case $flag in
3795             # Filter out MSVC cl.exe options from cflags that shouldn't
3796             # be passed to gas-preprocessor
3797             -M[TD]*)                                            ;;
3798             *)                  echo $flag                      ;;
3799         esac
3800    done
3801 }
3802
3803 ccc_flags(){
3804     for flag; do
3805         case $flag in
3806             -std=c99)           echo -c99                       ;;
3807             -mcpu=*)            echo -arch ${flag#*=}           ;;
3808             -mieee)             echo -ieee                      ;;
3809             -O*|-fast)          echo $flag                      ;;
3810             -fno-math-errno)    echo -assume nomath_errno       ;;
3811             -g)                 echo -g3                        ;;
3812             -Wall)              echo -msg_enable level2         ;;
3813             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3814             -Wl,*)              echo $flag                      ;;
3815             -f*|-W*)                                            ;;
3816             *)                  echo $flag                      ;;
3817         esac
3818    done
3819 }
3820
3821 cparser_flags(){
3822     for flag; do
3823         case $flag in
3824             -Wno-switch)             echo -Wno-switch-enum ;;
3825             -Wno-format-zero-length) ;;
3826             -Wdisabled-optimization) ;;
3827             -Wno-pointer-sign)       echo -Wno-other ;;
3828             *)                       echo $flag ;;
3829         esac
3830     done
3831 }
3832
3833 msvc_common_flags(){
3834     for flag; do
3835         case $flag in
3836             # In addition to specifying certain flags under the compiler
3837             # specific filters, they must be specified here as well or else the
3838             # generic catch all at the bottom will print the original flag.
3839             -Wall)                ;;
3840             -std=c99)             ;;
3841             # Common flags
3842             -fomit-frame-pointer) ;;
3843             -g)                   echo -Z7 ;;
3844             -fno-math-errno)      ;;
3845             -fno-common)          ;;
3846             -fno-signed-zeros)    ;;
3847             -fPIC)                ;;
3848             -mthumb)              ;;
3849             -march=*)             ;;
3850             -lz)                  echo zlib.lib ;;
3851             -lavicap32)           echo vfw32.lib user32.lib ;;
3852             -lx264)               echo libx264.lib ;;
3853             -lstdc++)             ;;
3854             -l*)                  echo ${flag#-l}.lib ;;
3855             -LARGEADDRESSAWARE)   echo $flag ;;
3856             -L*)                  echo -libpath:${flag#-L} ;;
3857             *)                    echo $flag ;;
3858         esac
3859     done
3860 }
3861
3862 msvc_flags(){
3863     msvc_common_flags "$@"
3864     for flag; do
3865         case $flag in
3866             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3867                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3868                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3869                                        -wd4307 \
3870                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
3871         esac
3872     done
3873 }
3874
3875 icl_flags(){
3876     msvc_common_flags "$@"
3877     for flag; do
3878         case $flag in
3879             # Despite what Intel's documentation says -Wall, which is supported
3880             # on Windows, does enable remarks so disable them here.
3881             -Wall)                echo $flag -Qdiag-disable:remark ;;
3882             -std=c99)             echo -Qstd=c99 ;;
3883             -flto)                echo -ipo ;;
3884         esac
3885     done
3886 }
3887
3888 icc_flags(){
3889     for flag; do
3890         case $flag in
3891             -flto)                echo -ipo ;;
3892             *)                    echo $flag ;;
3893         esac
3894     done
3895 }
3896
3897 pgi_flags(){
3898     for flag; do
3899         case $flag in
3900             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3901             -fomit-frame-pointer) echo -Mnoframe ;;
3902             -g)                   echo -gopt ;;
3903             *)                    echo $flag ;;
3904         esac
3905     done
3906 }
3907
3908 suncc_flags(){
3909     for flag; do
3910         case $flag in
3911             -march=*|-mcpu=*)
3912                 case "${flag#*=}" in
3913                     native)                   echo -xtarget=native       ;;
3914                     v9|niagara)               echo -xarch=sparc          ;;
3915                     ultrasparc)               echo -xarch=sparcvis       ;;
3916                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3917                     i586|pentium)             echo -xchip=pentium        ;;
3918                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3919                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3920                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3921                     pentium4*)          echo -xtarget=pentium4           ;;
3922                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3923                     *-sse3)             echo -xarch=sse3                 ;;
3924                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3925                     bonnell)                   echo -xarch=ssse3         ;;
3926                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3927                     westmere)                  echo -xtarget=westmere    ;;
3928                     silvermont)                echo -xarch=sse4_2        ;;
3929                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3930                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
3931                                                echo -xarch=avx           ;;
3932                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3933                     btver1)                    echo -xarch=amdsse4a      ;;
3934                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
3935                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3936                     k8|opteron|athlon64|athlon-fx)
3937                                                echo -xarch=sse2a         ;;
3938                     athlon*)                   echo -xarch=pentium_proa  ;;
3939                 esac
3940                 ;;
3941             -std=c99)             echo -xc99              ;;
3942             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3943             -fPIC)                echo -KPIC -xcode=pic32 ;;
3944             -W*,*)                echo $flag              ;;
3945             -f*-*|-W*|-mimpure-text)                      ;;
3946             -shared)              echo -G                 ;;
3947             *)                    echo $flag              ;;
3948         esac
3949     done
3950 }
3951
3952 tms470_flags(){
3953     for flag; do
3954         case $flag in
3955             -march=*|-mcpu=*)
3956                 case "${flag#*=}" in
3957                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3958                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3959                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3960                     armv6*|arm11*)          echo -mv=6   ;;
3961                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3962                                             echo -mv=5e  ;;
3963                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3964                 esac
3965                 ;;
3966             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3967             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3968             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3969             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3970             -msoft-float)   echo --float_support=vfplib       ;;
3971             -O[0-3]|-mf=*)  echo $flag                        ;;
3972             -g)             echo -g -mn                       ;;
3973             -pds=*)         echo $flag                        ;;
3974             -D*|-I*)        echo $flag                        ;;
3975             --gcc|--abi=*)  echo $flag                        ;;
3976             -me)            echo $flag                        ;;
3977         esac
3978     done
3979 }
3980
3981 probe_cc(){
3982     pfx=$1
3983     _cc=$2
3984     first=$3
3985
3986     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3987     unset _ld_o _ldflags _ld_lib _ld_path
3988     unset _depflags _DEPCMD _DEPFLAGS
3989     _flags_filter=echo
3990
3991     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3992         true # no-op to avoid reading stdin in following checks
3993     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3994         _type=llvm_gcc
3995         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3996         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3997         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3998         _cflags_speed='-O3'
3999         _cflags_size='-Os'
4000     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4001         _type=gcc
4002         gcc_version=$($_cc --version | head -n1)
4003         gcc_basever=$($_cc -dumpversion)
4004         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4005         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4006         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4007         case $gcc_basever in
4008             2) ;;
4009             2.*) ;;
4010             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4011         esac
4012         if [ "$first" = true ]; then
4013             case $gcc_basever in
4014                 4.2*)
4015                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4016             esac
4017         fi
4018         _cflags_speed='-O3'
4019         _cflags_size='-Os'
4020     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4021         _type=icc
4022         _ident=$($_cc --version | head -n1)
4023         _depflags='-MMD'
4024         _cflags_speed='-O3'
4025         _cflags_size='-Os'
4026         _cflags_noopt='-O1'
4027         _flags_filter=icc_flags
4028     elif $_cc -v 2>&1 | grep -q xlc; then
4029         _type=xlc
4030         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4031         _cflags_speed='-O5'
4032         _cflags_size='-O5 -qcompact'
4033     elif $_cc -V 2>/dev/null | grep -q Compaq; then
4034         _type=ccc
4035         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
4036         _DEPFLAGS='-M'
4037         _cflags_speed='-fast'
4038         _cflags_size='-O1'
4039         _flags_filter=ccc_flags
4040     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4041         test -d "$sysroot" || die "No valid sysroot specified."
4042         _type=armcc
4043         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4044         armcc_conf="$PWD/armcc.conf"
4045         $_cc --arm_linux_configure                 \
4046              --arm_linux_config_file="$armcc_conf" \
4047              --configure_sysroot="$sysroot"        \
4048              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4049              die "Error creating armcc configuration file."
4050         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4051         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4052         as_default="${cross_prefix}gcc"
4053         _depflags='-MMD'
4054         _cflags_speed='-O3'
4055         _cflags_size='-Os'
4056     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
4057         _type=tms470
4058         _ident=$($_cc -version | head -n1 | tr -s ' ')
4059         _flags='--gcc --abi=eabi -me'
4060         _cc_e='-ppl -fe=$@'
4061         _cc_o='-fe=$@'
4062         _depflags='-ppa -ppd=$(@:.o=.d)'
4063         _cflags_speed='-O3 -mf=5'
4064         _cflags_size='-O3 -mf=2'
4065         _flags_filter=tms470_flags
4066     elif $_cc -v 2>&1 | grep -q clang; then
4067         _type=clang
4068         _ident=$($_cc --version 2>/dev/null | head -n1)
4069         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4070         _cflags_speed='-O3'
4071         _cflags_size='-Oz'
4072     elif $_cc -V 2>&1 | grep -q Sun; then
4073         _type=suncc
4074         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4075         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4076         _DEPFLAGS='-xM1 -xc99'
4077         _ldflags='-std=c99'
4078         _cflags_speed='-O5'
4079         _cflags_size='-O5 -xspace'
4080         _flags_filter=suncc_flags
4081     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4082         _type=pathscale
4083         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4084         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4085         _cflags_speed='-O2'
4086         _cflags_size='-Os'
4087         _flags_filter='filter_out -Wdisabled-optimization'
4088     elif $_cc -v 2>&1 | grep -q Open64; then
4089         _type=open64
4090         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4091         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4092         _cflags_speed='-O2'
4093         _cflags_size='-Os'
4094         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4095     elif $_cc -V 2>&1 | grep -q Portland; then
4096         _type=pgi
4097         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
4098         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
4099         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
4100         _cflags_size="-O2 -Munroll=c:1 $opt_common"
4101         _cflags_noopt="-O"
4102         _flags_filter=pgi_flags
4103     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4104         _type=armasm
4105         _ident=$($_cc | head -n1)
4106         # 4509: "This form of conditional instruction is deprecated"
4107         _flags="-nologo -ignore 4509"
4108         _flags_filter=armasm_flags
4109     elif $_cc 2>&1 | grep -q Intel; then
4110         _type=icl
4111         _ident=$($_cc 2>&1 | head -n1)
4112         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4113         # Not only is O3 broken on 13.x+ but it is slower on all previous
4114         # versions (tested) as well.
4115         _cflags_speed="-O2"
4116         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4117         if $_cc 2>&1 | grep -q Linker; then
4118             _ld_o='-out:$@'
4119         else
4120             _ld_o='-Fe$@'
4121         fi
4122         _cc_o='-Fo$@'
4123         _cc_e='-P'
4124         _flags_filter=icl_flags
4125         _ld_lib='lib%.a'
4126         _ld_path='-libpath:'
4127         # -Qdiag-error to make icl error when seeing certain unknown arguments
4128         _flags='-nologo -Qdiag-error:4044,10157'
4129         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4130         # with MSVC which enables it by default.
4131         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4132         disable stripping
4133     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4134         # lld can emulate multiple different linkers; in ms link.exe mode,
4135         # the -? parameter gives the help output which contains an identifyable
4136         # string, while it gives an error in other modes.
4137         _type=lld-link
4138         # The link.exe mode doesn't have a switch for getting the version,
4139         # but we can force it back to gnu mode and get the version from there.
4140         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4141         _ld_o='-out:$@'
4142         _flags_filter=msvc_flags
4143         _ld_lib='lib%.a'
4144         _ld_path='-libpath:'
4145     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4146         _type=msvc
4147         _ident=$($_cc 2>&1 | head -n1)
4148         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4149         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4150         _cflags_speed="-O2"
4151         _cflags_size="-O1"
4152         if $_cc -nologo- 2>&1 | grep -q Linker; then
4153             _ld_o='-out:$@'
4154         else
4155             _ld_o='-Fe$@'
4156         fi
4157         _cc_o='-Fo$@'
4158         _cc_e='-P -Fi$@'
4159         _flags_filter=msvc_flags
4160         _ld_lib='lib%.a'
4161         _ld_path='-libpath:'
4162         _flags='-nologo'
4163         disable stripping
4164     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4165         _type=cparser
4166         _ident=$($_cc --version | head -n1)
4167         _depflags='-MMD'
4168         _cflags_speed='-O4'
4169         _cflags_size='-O2'
4170         _flags_filter=cparser_flags
4171     fi
4172
4173     eval ${pfx}_type=\$_type
4174     eval ${pfx}_ident=\$_ident
4175 }
4176
4177 set_ccvars(){
4178     eval ${1}_C=\${_cc_c-\${${1}_C}}
4179     eval ${1}_E=\${_cc_e-\${${1}_E}}
4180     eval ${1}_O=\${_cc_o-\${${1}_O}}
4181
4182     if [ -n "$_depflags" ]; then
4183         eval ${1}_DEPFLAGS=\$_depflags
4184     else
4185         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4186         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4187         eval DEP${1}FLAGS=\$_flags
4188     fi
4189 }
4190
4191 probe_cc cc "$cc" "true"
4192 cflags_filter=$_flags_filter
4193 cflags_speed=$_cflags_speed
4194 cflags_size=$_cflags_size
4195 cflags_noopt=$_cflags_noopt
4196 add_cflags $_flags $_cflags
4197 cc_ldflags=$_ldflags
4198 set_ccvars CC
4199 set_ccvars CXX
4200
4201 probe_cc hostcc "$host_cc"
4202 host_cflags_filter=$_flags_filter
4203 add_host_cflags  $_flags $_cflags
4204 set_ccvars HOSTCC
4205
4206 test -n "$cc_type" && enable $cc_type ||
4207     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4208
4209 : ${as_default:=$cc}
4210 : ${objcc_default:=$cc}
4211 : ${dep_cc_default:=$cc}
4212 : ${ld_default:=$cc}
4213 : ${host_ld_default:=$host_cc}
4214 set_default ar as objcc dep_cc ld ln_s host_ld windres
4215
4216 probe_cc as "$as"
4217 asflags_filter=$_flags_filter
4218 add_asflags $_flags $_cflags
4219 set_ccvars AS
4220
4221 probe_cc objcc "$objcc"
4222 objcflags_filter=$_flags_filter
4223 add_objcflags $_flags $_cflags
4224 set_ccvars OBJC
4225
4226 probe_cc ld "$ld"
4227 ldflags_filter=$_flags_filter
4228 add_ldflags $_flags $_ldflags
4229 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4230 LD_O=${_ld_o-$LD_O}
4231 LD_LIB=${_ld_lib-$LD_LIB}
4232 LD_PATH=${_ld_path-$LD_PATH}
4233
4234 probe_cc hostld "$host_ld"
4235 host_ldflags_filter=$_flags_filter
4236 add_host_ldflags $_flags $_ldflags
4237 HOSTLD_O=${_ld_o-$HOSTLD_O}
4238
4239 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4240     probe_cc depcc "$dep_cc"
4241     CCDEP=${_DEPCMD:-$DEPCMD}
4242     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4243     DEPCCFLAGS=$_flags
4244 fi
4245
4246 if $ar 2>&1 | grep -q Microsoft; then
4247     arflags="-nologo"
4248     ar_o='-out:$@'
4249 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
4250     arflags="rq"
4251     ar_o='$@'
4252 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
4253     arflags='-Xany -r -c'
4254     ar_o='$@'
4255 elif $ar 2>&1 | grep -q "\[D\] "; then
4256     arflags="rcD"
4257     ar_o='$@'
4258 else
4259     arflags="rc"
4260     ar_o='$@'
4261 fi
4262
4263 add_cflags $extra_cflags
4264 add_cxxflags $extra_cxxflags
4265 add_objcflags $extra_objcflags
4266 add_asflags $extra_cflags
4267
4268 if test -n "$sysroot"; then
4269     case "$cc_type" in
4270         gcc|llvm_gcc|clang)
4271             add_cppflags --sysroot="$sysroot"
4272             add_ldflags --sysroot="$sysroot"
4273 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
4274             add_cppflags -isysroot "$sysroot"
4275             add_ldflags -isysroot "$sysroot"
4276         ;;
4277         tms470)
4278             add_cppflags -I"$sysinclude"
4279             add_ldflags  --sysroot="$sysroot"
4280         ;;
4281     esac
4282 fi
4283
4284 if test "$cpu" = host; then
4285     enabled cross_compile &&
4286         die "--cpu=host makes no sense when cross-compiling."
4287
4288     case "$cc_type" in
4289         gcc|llvm_gcc)
4290             check_native(){
4291                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4292                 sed -n "/cc1.*$1=/{
4293                             s/.*$1=\\([^ ]*\\).*/\\1/
4294                             p
4295                             q
4296                         }" $TMPE
4297             }
4298             cpu=$(check_native -march || check_native -mcpu)
4299         ;;
4300         clang)
4301             check_native(){
4302                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4303                 sed -n "/cc1.*-target-cpu /{
4304                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4305                             p
4306                             q
4307                         }" $TMPE
4308             }
4309             cpu=$(check_native -march)
4310         ;;
4311     esac
4312
4313     test "${cpu:-host}" = host &&
4314         die "--cpu=host not supported with compiler $cc"
4315 fi
4316
4317 # Deal with common $arch aliases
4318 case "$arch" in
4319     aarch64|arm64)
4320         arch="aarch64"
4321     ;;
4322     arm*|iPad*|iPhone*)
4323         arch="arm"
4324     ;;
4325     mips*|IP*)
4326         case "$arch" in
4327         *el)
4328             add_cppflags -EL
4329             add_ldflags -EL
4330         ;;
4331         *eb)
4332             add_cppflags -EB
4333             add_ldflags -EB
4334         ;;
4335         esac
4336         arch="mips"
4337     ;;
4338     parisc*|hppa*)
4339         arch="parisc"
4340     ;;
4341     "Power Macintosh"|ppc*|powerpc*)
4342         arch="ppc"
4343     ;;
4344     s390|s390x)
4345         arch="s390"
4346     ;;
4347     sh4|sh)
4348         arch="sh4"
4349     ;;
4350     sun4*|sparc*)
4351         arch="sparc"
4352     ;;
4353     tilegx|tile-gx)
4354         arch="tilegx"
4355     ;;
4356     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4357         arch="x86"
4358     ;;
4359 esac
4360
4361 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4362 enable $arch
4363
4364 # Add processor-specific flags
4365 if enabled aarch64; then
4366
4367     case $cpu in
4368         armv*)
4369             cpuflags="-march=$cpu"
4370         ;;
4371         *)
4372             cpuflags="-mcpu=$cpu"
4373         ;;
4374     esac
4375
4376 elif enabled alpha; then
4377
4378     cpuflags="-mcpu=$cpu"
4379
4380 elif enabled arm; then
4381
4382     check_arm_arch() {
4383         check_cpp_condition stddef.h \
4384             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4385             $cpuflags
4386     }
4387
4388     probe_arm_arch() {
4389         if   check_arm_arch 4;        then echo armv4
4390         elif check_arm_arch 4T;       then echo armv4t
4391         elif check_arm_arch 5;        then echo armv5
4392         elif check_arm_arch 5E;       then echo armv5e
4393         elif check_arm_arch 5T;       then echo armv5t
4394         elif check_arm_arch 5TE;      then echo armv5te
4395         elif check_arm_arch 5TEJ;     then echo armv5te
4396         elif check_arm_arch 6;        then echo armv6
4397         elif check_arm_arch 6J;       then echo armv6j
4398         elif check_arm_arch 6K;       then echo armv6k
4399         elif check_arm_arch 6Z;       then echo armv6z
4400         elif check_arm_arch 6ZK;      then echo armv6zk
4401         elif check_arm_arch 6T2;      then echo armv6t2
4402         elif check_arm_arch 7;        then echo armv7
4403         elif check_arm_arch 7A  7_A;  then echo armv7-a
4404         elif check_arm_arch 7S;       then echo armv7-a
4405         elif check_arm_arch 7R  7_R;  then echo armv7-r
4406         elif check_arm_arch 7M  7_M;  then echo armv7-m
4407         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4408         elif check_arm_arch 8A  8_A;  then echo armv8-a
4409         fi
4410     }
4411
4412     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4413
4414     case $cpu in
4415         armv*)
4416             cpuflags="-march=$cpu"
4417             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4418         ;;
4419         *)
4420             cpuflags="-mcpu=$cpu"
4421             case $cpu in
4422                 cortex-a*)                               subarch=armv7a  ;;
4423                 cortex-r*)                               subarch=armv7r  ;;
4424                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4425                 arm11*)                                  subarch=armv6   ;;
4426                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4427                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4428                 *)                             subarch=$(probe_arm_arch) ;;
4429             esac
4430         ;;
4431     esac
4432
4433     case "$subarch" in
4434         armv5t*)    enable fast_clz                ;;
4435         armv[6-8]*)
4436             enable fast_clz
4437             disabled fast_unaligned || enable fast_unaligned
4438             ;;
4439     esac
4440
4441 elif enabled avr32; then
4442
4443     case $cpu in
4444         ap7[02]0[0-2])
4445             subarch="avr32_ap"
4446             cpuflags="-mpart=$cpu"
4447         ;;
4448         ap)
4449             subarch="avr32_ap"
4450             cpuflags="-march=$cpu"
4451         ;;
4452         uc3[ab]*)
4453             subarch="avr32_uc"
4454             cpuflags="-mcpu=$cpu"
4455         ;;
4456         uc)
4457             subarch="avr32_uc"
4458             cpuflags="-march=$cpu"
4459         ;;
4460     esac
4461
4462 elif enabled bfin; then
4463
4464     cpuflags="-mcpu=$cpu"
4465
4466 elif enabled mips; then
4467
4468     cpuflags="-march=$cpu"
4469
4470     if [ "$cpu" != "generic" ]; then
4471         disable mips32r2
4472         disable mips32r5
4473         disable mips64r2
4474         disable mips32r6
4475         disable mips64r6
4476         disable loongson2
4477         disable loongson3
4478
4479         case $cpu in
4480             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4481                 enable mips32r2
4482                 disable msa
4483             ;;
4484             p5600|i6400|p6600)
4485                 disable mipsdsp
4486                 disable mipsdspr2
4487             ;;
4488             loongson*)
4489                 enable loongson2
4490                 enable loongson3
4491                 enable local_aligned_8 local_aligned_16 local_aligned_32
4492                 enable simd_align_16
4493                 enable fast_64bit
4494                 enable fast_clz
4495                 enable fast_cmov
4496                 enable fast_unaligned
4497                 disable aligned_stack
4498                 disable mipsfpu
4499                 disable mipsdsp
4500                 disable mipsdspr2
4501                 case $cpu in
4502                     loongson3*)
4503                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4504                     ;;
4505                     loongson2e)
4506                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4507                     ;;
4508                     loongson2f)
4509                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4510                     ;;
4511                 esac
4512             ;;
4513             *)
4514                 # Unknown CPU. Disable everything.
4515                 warn "unknown CPU. Disabling all MIPS optimizations."
4516                 disable mipsfpu
4517                 disable mipsdsp
4518                 disable mipsdspr2
4519                 disable msa
4520                 disable mmi
4521             ;;
4522         esac
4523
4524         case $cpu in
4525             24kc)
4526                 disable mipsfpu
4527                 disable mipsdsp
4528                 disable mipsdspr2
4529             ;;
4530             24kf*)
4531                 disable mipsdsp
4532                 disable mipsdspr2
4533             ;;
4534             24kec|34kc|1004kc)
4535                 disable mipsfpu
4536                 disable mipsdspr2
4537             ;;
4538             24kef*|34kf*|1004kf*)
4539                 disable mipsdspr2
4540             ;;
4541             74kc)
4542                 disable mipsfpu
4543             ;;
4544             p5600)
4545                 enable mips32r5
4546                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4547             ;;
4548             i6400)
4549                 enable mips64r6
4550                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4551             ;;
4552             p6600)
4553                 enable mips64r6
4554                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4555             ;;
4556         esac
4557     else
4558         # We do not disable anything. Is up to the user to disable the unwanted features.
4559         warn 'generic cpu selected'
4560     fi
4561
4562 elif enabled ppc; then
4563
4564     disable ldbrx
4565
4566     case $(tolower $cpu) in
4567         601|ppc601|powerpc601)
4568             cpuflags="-mcpu=601"
4569             disable altivec
4570         ;;
4571         603*|ppc603*|powerpc603*)
4572             cpuflags="-mcpu=603"
4573             disable altivec
4574         ;;
4575         604*|ppc604*|powerpc604*)
4576             cpuflags="-mcpu=604"
4577             disable altivec
4578         ;;
4579         g3|75*|ppc75*|powerpc75*)
4580             cpuflags="-mcpu=750"
4581             disable altivec
4582         ;;
4583         g4|745*|ppc745*|powerpc745*)
4584             cpuflags="-mcpu=7450"
4585             disable vsx
4586         ;;
4587         74*|ppc74*|powerpc74*)
4588             cpuflags="-mcpu=7400"
4589             disable vsx
4590         ;;
4591         g5|970|ppc970|powerpc970)
4592             cpuflags="-mcpu=970"
4593             disable vsx
4594         ;;
4595         power[3-6]*)
4596             cpuflags="-mcpu=$cpu"
4597             disable vsx
4598         ;;
4599         power[7-8]*)
4600             cpuflags="-mcpu=$cpu"
4601         ;;
4602         cell)
4603             cpuflags="-mcpu=cell"
4604             enable ldbrx
4605             disable vsx
4606         ;;
4607         e500mc)
4608             cpuflags="-mcpu=e500mc"
4609             disable altivec
4610         ;;
4611         e500v2)
4612             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4613             disable altivec
4614             disable dcbzl
4615         ;;
4616         e500)
4617             cpuflags="-mcpu=8540 -mhard-float"
4618             disable altivec
4619             disable dcbzl
4620         ;;
4621     esac
4622
4623 elif enabled sparc; then
4624
4625     case $cpu in
4626         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4627             cpuflags="-mcpu=$cpu"
4628         ;;
4629         ultrasparc*|niagara[234])
4630             cpuflags="-mcpu=$cpu"
4631         ;;
4632     esac
4633
4634 elif enabled x86; then
4635
4636     case $cpu in
4637         i[345]86|pentium)
4638             cpuflags="-march=$cpu"
4639             disable i686
4640             disable mmx
4641         ;;
4642         # targets that do NOT support nopl and conditional mov (cmov)
4643         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4644             cpuflags="-march=$cpu"
4645             disable i686
4646         ;;
4647         # targets that do support nopl and conditional mov (cmov)
4648         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4649         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4650         |amdfam10|barcelona|b[dt]ver*|znver*)
4651             cpuflags="-march=$cpu"
4652             enable i686
4653             enable fast_cmov
4654         ;;
4655         # targets that do support conditional mov but on which it's slow
4656         pentium4|pentium4m|prescott|nocona)
4657             cpuflags="-march=$cpu"
4658             enable i686
4659             disable fast_cmov
4660         ;;
4661     esac
4662
4663 fi
4664
4665 if [ "$cpu" != generic ]; then
4666     add_cflags  $cpuflags
4667     add_asflags $cpuflags
4668     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4669 fi
4670
4671 # compiler sanity check
4672 check_exec <<EOF
4673 int main(void){ return 0; }
4674 EOF
4675 if test "$?" != 0; then
4676     echo "$cc is unable to create an executable file."
4677     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4678         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4679         echo "Only do this if you know what cross compiling means."
4680     fi
4681     die "C compiler test failed."
4682 fi
4683
4684 add_cppflags -D_ISOC99_SOURCE
4685 add_cxxflags -D__STDC_CONSTANT_MACROS
4686 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4687
4688 # some compilers silently accept -std=c11, so we also need to check that the
4689 # version macro is defined properly
4690 if test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L"; then
4691     add_cflags -std=c11
4692 else
4693     check_cflags -std=c99
4694 fi
4695
4696 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4697 #include <stdlib.h>
4698 EOF
4699 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4700 #include <stdlib.h>
4701 EOF
4702
4703 add_host_cppflags -D_ISOC99_SOURCE
4704 check_host_cflags -std=c99
4705 check_host_cflags -Wall
4706 check_host_cflags -O3
4707
4708 check_64bit(){
4709     arch32=$1
4710     arch64=$2
4711     expr=$3
4712     check_code cc "" "int test[2*($expr) - 1]" &&
4713         subarch=$arch64 || subarch=$arch32
4714 }
4715
4716 case "$arch" in
4717     aarch64|alpha|ia64)
4718         spic=$shared
4719     ;;
4720     mips)
4721         check_64bit mips mips64 '_MIPS_SIM > 1'
4722         spic=$shared
4723     ;;
4724     parisc)
4725         check_64bit parisc parisc64 'sizeof(void *) > 4'
4726         spic=$shared
4727     ;;
4728     ppc)
4729         check_64bit ppc ppc64 'sizeof(void *) > 4'
4730         spic=$shared
4731     ;;
4732     s390)
4733         check_64bit s390 s390x 'sizeof(void *) > 4'
4734         spic=$shared
4735     ;;
4736     sparc)
4737         check_64bit sparc sparc64 'sizeof(void *) > 4'
4738         spic=$shared
4739     ;;
4740     x86)
4741         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4742         # Treat x32 as x64 for now. Note it also needs spic=$shared
4743         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4744             subarch=x86_64
4745         if test "$subarch" = "x86_64"; then
4746             spic=$shared
4747         fi
4748     ;;
4749     ppc)
4750         check_cc <<EOF && subarch="ppc64"
4751         int test[(int)sizeof(char*) - 7];
4752 EOF
4753     ;;
4754 esac
4755
4756 enable $subarch
4757 enabled spic && enable_weak pic
4758
4759 # OS specific
4760 case $target_os in
4761     aix)
4762         SHFLAGS=-shared
4763         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4764         enabled shared && add_ldflags -Wl,-brtl
4765         ;;
4766     android)
4767         disable symver
4768         enable section_data_rel_ro
4769         SLIB_INSTALL_NAME='$(SLIBNAME)'
4770         SLIB_INSTALL_LINKS=
4771         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4772         ;;
4773     haiku)
4774         prefix_default="/boot/common"
4775         network_extralibs="-lnetwork"
4776         host_extralibs=
4777         ;;
4778     sunos)
4779         SHFLAGS='-shared -Wl,-h,$$(@F)'
4780         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4781         network_extralibs="-lsocket -lnsl"
4782         add_cppflags -D__EXTENSIONS__
4783         # When using suncc to build, the Solaris linker will mark
4784         # an executable with each instruction set encountered by
4785         # the Solaris assembler.  As our libraries contain their own
4786         # guards for processor-specific code, instead suppress
4787         # generation of the HWCAPS ELF section on Solaris x86 only.
4788         enabled_all suncc x86 &&
4789             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4790             add_ldflags -Wl,-M,mapfile
4791         nm_default='nm -P -g'
4792         version_script='-M'
4793         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
4794         ;;
4795     netbsd)
4796         disable symver
4797         oss_indev_extralibs="-lossaudio"
4798         oss_outdev_extralibs="-lossaudio"
4799         enabled gcc || check_ldflags -Wl,-zmuldefs
4800         ;;
4801     openbsd|bitrig)
4802         disable symver
4803         SHFLAGS='-shared'
4804         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4805         SLIB_INSTALL_LINKS=
4806         oss_indev_extralibs="-lossaudio"
4807         oss_outdev_extralibs="-lossaudio"
4808         ;;
4809     dragonfly)
4810         disable symver
4811         ;;
4812     freebsd)
4813         ;;
4814     bsd/os)
4815         add_extralibs -lpoll -lgnugetopt
4816         strip="strip -d"
4817         ;;
4818     darwin)
4819         enabled ppc && add_asflags -force_cpusubtype_ALL
4820         install_name_dir_default='$(SHLIBDIR)'
4821         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4822         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4823         strip="${strip} -x"
4824         add_ldflags -Wl,-dynamic,-search_paths_first
4825         SLIBSUF=".dylib"
4826         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4827         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4828         objformat="macho"
4829         enabled x86_64 && objformat="macho64"
4830         enabled_any pic shared x86_64 ||
4831             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4832         check_header dispatch/dispatch.h &&
4833             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
4834         version_script='-exported_symbols_list'
4835         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
4836         ;;
4837     msys*)
4838         die "Native MSYS builds are discouraged, please use the MINGW environment."
4839         ;;
4840     mingw32*|mingw64*)
4841         if test $target_os = "mingw32ce"; then
4842             disable network
4843         else
4844             target_os=mingw32
4845         fi
4846         decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
4847         decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
4848         LIBTARGET=i386
4849         if enabled x86_64; then
4850             LIBTARGET="i386:x86-64"
4851         elif enabled arm; then
4852             LIBTARGET=arm-wince
4853         fi
4854         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4855         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4856         shlibdir_default="$bindir_default"
4857         SLIBPREF=""
4858         SLIBSUF=".dll"
4859         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4860         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4861         dlltool="${cross_prefix}dlltool"
4862         if check_cmd lib.exe -list; then
4863             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4864             if enabled x86_64; then
4865                 LIBTARGET=x64
4866             fi
4867         elif check_cmd $dlltool --version; then
4868             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4869         fi
4870         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4871         SLIB_INSTALL_LINKS=
4872         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4873         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4874         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--disable-auto-image-base'
4875         objformat="win32"
4876         ranlib=:
4877         enable dos_paths
4878         check_ldflags -Wl,--nxcompat,--dynamicbase
4879         # Lets work around some stupidity in binutils.
4880         # ld will strip relocations from executables even though we need them
4881         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4882         # however ld then forgets what the entry point should be (oops) so we
4883         # have to manually (re)set it.
4884         if enabled x86_32; then
4885             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
4886         elif enabled x86_64; then
4887             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
4888             check_ldflags -Wl,--high-entropy-va # binutils 2.25
4889             # Set image base >4GB for extra entropy with HEASLR
4890             add_ldexeflags -Wl,--image-base,0x140000000
4891             append SHFLAGS -Wl,--image-base,0x180000000
4892         fi
4893         ;;
4894     win32|win64)
4895         disable symver
4896         if enabled shared; then
4897             # Link to the import library instead of the normal static library
4898             # for shared libs.
4899             LD_LIB='%.lib'
4900             # Cannot build both shared and static libs with MSVC or icl.
4901             disable static
4902         fi
4903         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4904         shlibdir_default="$bindir_default"
4905         SLIBPREF=""
4906         SLIBSUF=".dll"
4907         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4908         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4909         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4910         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4911         SLIB_INSTALL_LINKS=
4912         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4913         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4914         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4915         objformat="win32"
4916         ranlib=:
4917         enable dos_paths
4918         ;;
4919     cygwin*)
4920         target_os=cygwin
4921         shlibdir_default="$bindir_default"
4922         SLIBPREF="cyg"
4923         SLIBSUF=".dll"
4924         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4925         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4926         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4927         SLIB_INSTALL_LINKS=
4928         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4929         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4930         objformat="win32"
4931         enable dos_paths
4932         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4933         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4934         ;;
4935     *-dos|freedos|opendos)
4936         network_extralibs="-lsocket"
4937         objformat="coff"
4938         enable dos_paths
4939         add_cppflags -U__STRICT_ANSI__
4940         ;;
4941     linux)
4942         enable dv1394
4943         enable section_data_rel_ro
4944         ;;
4945     irix*)
4946         target_os=irix
4947         ranlib="echo ignoring ranlib"
4948         ;;
4949     os/2*)
4950         strip="lxlite -CS"
4951         objformat="aout"
4952         add_cppflags -D_GNU_SOURCE
4953         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4954         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4955         LIBSUF="_s.a"
4956         SLIBPREF=""
4957         SLIBSUF=".dll"
4958         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4959         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4960         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
4961             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
4962             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
4963             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
4964             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
4965         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
4966             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
4967         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4968         SLIB_INSTALL_LINKS=
4969         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
4970         enable dos_paths
4971         enable_weak os2threads
4972         ;;
4973     gnu/kfreebsd)
4974         add_cppflags -D_BSD_SOURCE
4975         ;;
4976     gnu)
4977         ;;
4978     qnx)
4979         add_cppflags -D_QNX_SOURCE
4980         network_extralibs="-lsocket"
4981         ;;
4982     symbian)
4983         SLIBSUF=".dll"
4984         enable dos_paths
4985         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4986         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4987         add_ldflags -Wl,--target1-abs,--no-undefined \
4988                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4989                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4990         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4991                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4992                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4993         ;;
4994     osf1)
4995         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4996         ;;
4997     minix)
4998         ;;
4999     none)
5000         ;;
5001     *)
5002         die "Unknown OS '$target_os'."
5003         ;;
5004 esac
5005
5006 # test if creating links works
5007 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5008 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5009 mkdir "$link_dest"
5010 $ln_s "$link_dest" "$link_name"
5011 touch "$link_dest/test_file"
5012 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5013     # create link to source path
5014     [ -e src ] && rm src
5015     $ln_s "$source_path" src
5016     source_link=src
5017 else
5018     # creating directory links doesn't work
5019     # fall back to using the full source path
5020     source_link="$source_path"
5021 fi
5022 # cleanup
5023 rm -r "$link_dest"
5024 rm -r "$link_name"
5025
5026 # determine libc flavour
5027
5028 probe_libc(){
5029     pfx=$1
5030     pfx_no_=${pfx%_}
5031     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5032     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5033         eval ${pfx}libc_type=uclibc
5034         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5035     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5036         eval ${pfx}libc_type=glibc
5037         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5038     # MinGW headers can be installed on Cygwin, so check for newlib first.
5039     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5040         eval ${pfx}libc_type=newlib
5041         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5042     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5043     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5044         eval ${pfx}libc_type=mingw64
5045         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5046             add_compat msvcrt/snprintf.o
5047             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5048         fi
5049         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5050         eval test \$${pfx_no_}cc_type = "gcc" &&
5051             add_${pfx}cppflags -D__printf__=__gnu_printf__
5052     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5053          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5054         eval ${pfx}libc_type=mingw32
5055         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5056             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5057             die "ERROR: MinGW32 runtime version must be >= 3.15."
5058         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5059         check_${pfx}cpp_condition _mingw.h "defined(_WIN32_WINNT) && _WIN32_WINNT >= 0x0502" ||
5060             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
5061         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700__" &&
5062             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5063         eval test \$${pfx_no_}cc_type = "gcc" &&
5064             add_${pfx}cppflags -D__printf__=__gnu_printf__
5065     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5066         eval ${pfx}libc_type=msvcrt
5067         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5068             if [ "$pfx" = host_ ]; then
5069                 add_host_cppflags -Dsnprintf=_snprintf
5070             else
5071                 add_compat strtod.o strtod=avpriv_strtod
5072                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5073                                              _snprintf=avpriv_snprintf  \
5074                                              vsnprintf=avpriv_vsnprintf
5075             fi
5076         fi
5077         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5078         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5079         # 0x601 by default unless something else is set by the user.
5080         # This can easily lead to us detecting functions only present
5081         # in such new versions and producing binaries requiring windows 7.0.
5082         # Therefore explicitly set the default to XP unless the user has
5083         # set something else on the command line.
5084         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5085         # family. For these cases, configure is free to use any functions
5086         # found in the SDK headers by default. (Alternatively, we could force
5087         # _WIN32_WINNT to 0x0602 in that case.)
5088         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5089             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
5090 #ifdef WINAPI_FAMILY
5091 #include <winapifamily.h>
5092 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5093 #error not desktop
5094 #endif
5095 #endif
5096 EOF
5097         if [ "$pfx" = "" ]; then
5098             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5099             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5100         fi
5101     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5102         eval ${pfx}libc_type=klibc
5103     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5104         eval ${pfx}libc_type=bionic
5105     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5106         eval ${pfx}libc_type=solaris
5107         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5108     fi
5109     check_${pfx}cc <<EOF
5110 #include <time.h>
5111 void *v = localtime_r;
5112 EOF
5113 test "$?" != 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
5114 #include <time.h>
5115 void *v = localtime_r;
5116 EOF
5117
5118 }
5119
5120 probe_libc
5121 test -n "$libc_type" && enable libc_$libc_type
5122 probe_libc host_
5123 test -n "$host_libc_type" && enable host_libc_$host_libc_type
5124
5125 case $libc_type in
5126     bionic)
5127         add_compat strtod.o strtod=avpriv_strtod
5128         ;;
5129 esac
5130
5131 # hacks for compiler/libc/os combinations
5132
5133 if enabled_all tms470 libc_glibc; then
5134     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
5135     add_cppflags -D__USER_LABEL_PREFIX__=
5136     add_cppflags -D__builtin_memset=memset
5137     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
5138     add_cflags   -pds=48    # incompatible redefinition of macro
5139 fi
5140
5141 if enabled_all ccc libc_glibc; then
5142     add_ldflags -Wl,-z,now  # calls to libots crash without this
5143 fi
5144
5145 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5146     add_cppflags '-I\$(SRC_PATH)/compat/float'
5147
5148 esc(){
5149     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
5150 }
5151
5152 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
5153
5154 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5155
5156 set_default libdir
5157 : ${shlibdir_default:="$libdir"}
5158 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5159
5160 set_default $PATHS_LIST
5161 set_default nm
5162
5163 # we need to build at least one lib type
5164 if ! enabled_any static shared; then
5165     cat <<EOF
5166 At least one library type must be built.
5167 Specify --enable-static to build the static libraries or --enable-shared to
5168 build the shared libraries as well. To only build the shared libraries specify
5169 --disable-static in addition to --enable-shared.
5170 EOF
5171     exit 1
5172 fi
5173
5174 disabled optimizations || check_cflags -fomit-frame-pointer
5175
5176 enable_weak_pic() {
5177     disabled pic && return
5178     enable pic
5179     add_cppflags -DPIC
5180     case "$target_os" in
5181     mingw*|cygwin*)
5182         ;;
5183     *)
5184         add_cflags -fPIC
5185         ;;
5186     esac
5187     add_asflags  -fPIC
5188 }
5189
5190 enabled pic && enable_weak_pic
5191
5192 check_cc <<EOF || die "Symbol mangling check failed."
5193 int ff_extern;
5194 EOF
5195 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5196 extern_prefix=${sym%%ff_extern*}
5197
5198 check_cc <<EOF && enable_weak inline_asm
5199 void foo(void) { __asm__ volatile ("" ::); }
5200 EOF
5201
5202 _restrict=
5203 for restrict_keyword in restrict __restrict__ __restrict; do
5204     check_cc <<EOF && _restrict=$restrict_keyword && break
5205 void foo(char * $restrict_keyword p);
5206 EOF
5207 done
5208
5209 check_cc <<EOF && enable pragma_deprecated
5210 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
5211 EOF
5212
5213 check_cc <<EOF && enable attribute_packed
5214 struct { int x; } __attribute__((packed)) x;
5215 EOF
5216
5217 check_cc <<EOF && enable attribute_may_alias
5218 union { int x; } __attribute__((may_alias)) x;
5219 EOF
5220
5221 check_cc <<EOF || die "endian test failed"
5222 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5223 EOF
5224 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5225
5226 if ! enabled ppc64 || enabled bigendian; then
5227     disable vsx
5228 fi
5229
5230 check_gas() {
5231     log "check_gas using '$as' as AS"
5232     # :vararg is used on aarch64, arm and ppc altivec
5233     check_as <<EOF || return 1
5234 .macro m n, y:vararg=0
5235 \n: .int \y
5236 .endm
5237 m x
5238 EOF
5239     # .altmacro is only used in arm asm
5240     ! enabled arm || check_as <<EOF || return 1
5241 .altmacro
5242 EOF
5243     enable gnu_as
5244     return 0
5245 }
5246
5247 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5248     nogas=:
5249     enabled_any arm aarch64 && nogas=die
5250     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5251     as_noop=-v
5252
5253     case $as_type in
5254         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5255         gcc)  gaspp_as_type=gas ;;
5256         *)    gaspp_as_type=$as_type ;;
5257     esac
5258
5259     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5260
5261     test "${as#*gas-preprocessor.pl}" != "$as" ||
5262     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5263         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5264
5265     if ! check_gas ; then
5266         as=${gas:=$as}
5267         check_gas || \
5268             $nogas "GNU assembler not found, install/update gas-preprocessor"
5269     fi
5270
5271     check_as <<EOF && enable as_func
5272 .func test
5273 .endfunc
5274 EOF
5275 fi
5276
5277 check_inline_asm inline_asm_labels '"1:\n"'
5278
5279 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5280
5281 if enabled aarch64; then
5282     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5283     # internal assembler in clang 3.3 does not support this instruction
5284     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5285     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5286
5287     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5288
5289 elif enabled alpha; then
5290
5291     check_cflags -mieee
5292
5293 elif enabled arm; then
5294
5295     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
5296
5297     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
5298 float func(float a, float b){ return a+b; }
5299 EOF
5300
5301     enabled thumb && check_cflags -mthumb || check_cflags -marm
5302
5303     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
5304         enable vfp_args
5305     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5306         enable vfp_args
5307     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5308         case "${cross_prefix:-$cc}" in
5309             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
5310             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
5311 __asm__ (".eabi_attribute 28, 1");
5312 int main(void) { return 0; }
5313 EOF
5314         esac
5315         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5316     fi
5317
5318     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5319     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5320     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5321     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5322     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5323     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5324     enabled setend  && check_insn setend  'setend be'
5325
5326     [ $target_os = linux ] || [ $target_os = android ] ||
5327         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5328             $ARCH_EXT_LIST_ARM
5329
5330     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5331
5332     check_as <<EOF && enable as_dn_directive
5333 ra .dn d0.i16
5334 .unreq ra
5335 EOF
5336     check_as <<EOF && enable as_fpu_directive
5337 .fpu neon
5338 EOF
5339
5340     # llvm's integrated assembler supports .object_arch from llvm 3.5
5341     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
5342 .object_arch armv4
5343 EOF
5344
5345     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5346
5347 elif enabled mips; then
5348
5349     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5350     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5351     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5352
5353     # Enable minimum ISA based on selected options
5354     if enabled mips64; then
5355         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5356         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5357         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5358     else
5359         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5360         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5361         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5362         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5363     fi
5364
5365     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5366     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5367     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
5368     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5369     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5370
5371 elif enabled parisc; then
5372
5373     if enabled gcc; then
5374         case $($cc -dumpversion) in
5375             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5376         esac
5377     fi
5378
5379 elif enabled ppc; then
5380
5381     enable local_aligned_8 local_aligned_16 local_aligned_32
5382
5383     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5384     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5385     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5386     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5387
5388     # AltiVec flags: The FSF version of GCC differs from the Apple version
5389     if enabled altivec; then
5390         check_cflags -maltivec -mabi=altivec &&
5391         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
5392         check_cflags -faltivec
5393
5394         # check if our compiler supports Motorola AltiVec C API
5395         check_cc <<EOF || disable altivec
5396 $inc_altivec_h
5397 int main(void) {
5398     vector signed int v1 = (vector signed int) { 0 };
5399     vector signed int v2 = (vector signed int) { 1 };
5400     v1 = vec_add(v1, v2);
5401     return 0;
5402 }
5403 EOF
5404
5405         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5406     fi
5407
5408     if enabled vsx; then
5409         check_cflags -mvsx &&
5410         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
5411     fi
5412
5413     if enabled power8; then
5414         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
5415     fi
5416
5417 elif enabled x86; then
5418
5419     check_builtin rdtsc    intrin.h   "__rdtsc()"
5420     check_builtin mm_empty mmintrin.h "_mm_empty()"
5421
5422     enable local_aligned_8 local_aligned_16 local_aligned_32
5423
5424     # check whether EBP is available on x86
5425     # As 'i' is stored on the stack, this program will crash
5426     # if the base pointer is used to access it because the
5427     # base pointer is cleared in the inline assembly code.
5428     check_exec_crash <<EOF && enable ebp_available
5429 volatile int i=0;
5430 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5431 return i;
5432 EOF
5433
5434     # check whether EBX is available on x86
5435     check_inline_asm ebx_available '""::"b"(0)' &&
5436         check_inline_asm ebx_available '"":::"%ebx"'
5437
5438     # check whether xmm clobbers are supported
5439     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5440
5441     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5442         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5443
5444     # check whether binutils is new enough to compile SSSE3/MMXEXT
5445     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5446     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5447
5448     if ! disabled_any asm mmx yasm; then
5449         if check_cmd $yasmexe --version; then
5450             enabled x86_64 && yasm_extra="-m amd64"
5451             yasm_debug="-g dwarf2"
5452         elif check_cmd nasm -v; then
5453             yasmexe=nasm
5454             yasm_debug="-g -F dwarf"
5455             if enabled x86_64; then
5456                 case "$objformat" in
5457                     elf)   objformat=elf64 ;;
5458                     win32) objformat=win64 ;;
5459                 esac
5460             fi
5461         fi
5462
5463         YASMFLAGS="-f $objformat $yasm_extra"
5464         enabled pic               && append YASMFLAGS "-DPIC"
5465         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
5466         case "$objformat" in
5467             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
5468         esac
5469
5470         check_yasm "movbe ecx, [5]" && enable yasm ||
5471             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
5472         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
5473         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
5474         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
5475         check_yasm "CPU amdnop" || disable cpunop
5476     fi
5477
5478     case "$cpu" in
5479         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5480             disable fast_clz
5481         ;;
5482     esac
5483
5484 fi
5485
5486 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
5487
5488 check_ldflags -Wl,--as-needed
5489 check_ldflags -Wl,-z,noexecstack
5490
5491 if check_func dlopen && check_func dlsym; then
5492     ldl=
5493 elif check_func dlopen -ldl && check_func dlsym -ldl; then
5494     ldl=-ldl
5495 fi
5496
5497 avisynth_demuxer_extralibs='$ldl'
5498 cuda_extralibs='$ldl'
5499 decklink_outdev_extralibs="$decklink_outdev_extralibs $ldl"
5500 decklink_indev_extralibs="$decklink_indev_extralibs $ldl"
5501 frei0r_filter_extralibs='$ldl'
5502 frei0r_src_filter_extralibs='$ldl'
5503 ladspa_filter_extralibs='$ldl'
5504 nvenc_extralibs='$ldl'
5505 coreimage_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5506 coreimagesrc_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5507
5508 if ! disabled network; then
5509     check_func getaddrinfo $network_extralibs
5510     check_func inet_aton $network_extralibs
5511
5512     check_type netdb.h "struct addrinfo"
5513     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5514     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5515     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5516     check_type poll.h "struct pollfd"
5517     check_type netinet/sctp.h "struct sctp_event_subscribe"
5518     check_struct "sys/socket.h" "struct msghdr" msg_flags
5519     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5520     check_type netinet/in.h "struct sockaddr_in6"
5521     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5522     check_type "sys/types.h sys/socket.h" socklen_t
5523
5524     # Prefer arpa/inet.h over winsock2
5525     if check_header arpa/inet.h ; then
5526         check_func closesocket
5527     elif check_header winsock2.h ; then
5528         check_func_headers winsock2.h closesocket -lws2 &&
5529             network_extralibs="-lws2" ||
5530         { check_func_headers winsock2.h closesocket -lws2_32 &&
5531             network_extralibs="-lws2_32"; } || disable winsock2_h network
5532         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5533
5534         check_type ws2tcpip.h socklen_t
5535         check_type ws2tcpip.h "struct addrinfo"
5536         check_type ws2tcpip.h "struct group_source_req"
5537         check_type ws2tcpip.h "struct ip_mreq_source"
5538         check_type ws2tcpip.h "struct ipv6_mreq"
5539         check_type winsock2.h "struct pollfd"
5540         check_struct winsock2.h "struct sockaddr" sa_len
5541         check_type ws2tcpip.h "struct sockaddr_in6"
5542         check_type ws2tcpip.h "struct sockaddr_storage"
5543     else
5544         disable network
5545     fi
5546 fi
5547
5548 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5549 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5550 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5551 check_builtin sarestart signal.h "SA_RESTART"
5552 check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" -lpthread
5553 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5554 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5555 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5556 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5557
5558 case "$custom_allocator" in
5559     jemalloc)
5560         # jemalloc by default does not use a prefix
5561         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5562     ;;
5563     tcmalloc)
5564         require_pkg_config libtcmalloc gperftools/tcmalloc.h tc_malloc
5565         malloc_prefix=tc_
5566     ;;
5567 esac
5568
5569 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5570 check_func  ${malloc_prefix}memalign            && enable memalign
5571 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5572
5573 check_func  access
5574 check_func_headers stdlib.h arc4random
5575 check_func_headers time.h clock_gettime ||
5576     { check_lib time.h clock_gettime -lrt && LIBRT="-lrt"; }
5577 check_func  fcntl
5578 check_func  fork
5579 check_func  gethrtime
5580 check_func  getopt
5581 check_func  getrusage
5582 check_func  gettimeofday
5583 check_func  isatty
5584 check_func  mach_absolute_time
5585 check_func  mkstemp
5586 check_func  mmap
5587 check_func  mprotect
5588 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5589 check_func_headers time.h nanosleep ||
5590     { check_lib time.h nanosleep -lrt && LIBRT="-lrt"; }
5591 check_func  sched_getaffinity
5592 check_func  setrlimit
5593 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5594 check_func  strerror_r
5595 check_func  sysconf
5596 check_func  sysctl
5597 check_func  usleep
5598
5599 check_func_headers conio.h kbhit
5600 check_func_headers io.h setmode
5601 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5602 check_func_headers stdlib.h getenv
5603 check_func_headers sys/stat.h lstat
5604
5605 check_func_headers windows.h GetProcessAffinityMask
5606 check_func_headers windows.h GetProcessTimes
5607 check_func_headers windows.h GetSystemTimeAsFileTime
5608 check_func_headers windows.h LoadLibrary
5609 check_func_headers windows.h MapViewOfFile
5610 check_func_headers windows.h PeekNamedPipe
5611 check_func_headers windows.h SetConsoleTextAttribute
5612 check_func_headers windows.h SetConsoleCtrlHandler
5613 check_func_headers windows.h Sleep
5614 check_func_headers windows.h VirtualAlloc
5615 check_struct windows.h "CONDITION_VARIABLE" Ptr
5616 check_func_headers glob.h glob
5617 enabled xlib &&
5618     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5619
5620 check_header AudioToolbox/AudioToolbox.h
5621 check_header direct.h
5622 check_header dirent.h
5623 check_header dlfcn.h
5624 check_header d3d11.h
5625 check_header dxva.h
5626 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5627 check_header io.h
5628 check_header libcrystalhd/libcrystalhd_if.h
5629 check_header mach/mach_time.h
5630 check_header malloc.h
5631 check_header net/udplite.h
5632 check_header poll.h
5633 check_header sys/mman.h
5634 check_header sys/param.h
5635 check_header sys/resource.h
5636 check_header sys/select.h
5637 check_header sys/time.h
5638 check_header sys/un.h
5639 check_header termios.h
5640 check_header unistd.h
5641 check_header valgrind/valgrind.h
5642 check_header VideoDecodeAcceleration/VDADecoder.h
5643 check_header VideoToolbox/VideoToolbox.h
5644 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5645 enabled videotoolbox && check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferColorPrimaries_ITU_R_2020 -framework CoreVideo
5646 check_header windows.h
5647 check_header X11/extensions/XvMClib.h
5648 check_header asm/types.h
5649
5650 # it seems there are versions of clang in some distros that try to use the
5651 # gcc headers, which explodes for stdatomic
5652 # so we also check that atomics actually work here
5653 check_builtin stdatomic_h stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0)"
5654
5655 check_lib "windows.h shellapi.h" CommandLineToArgvW   -lshell32
5656 check_lib "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
5657 check_lib "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
5658
5659 check_lib "CoreServices/CoreServices.h" UTGetOSTypeFromString "-framework CoreServices"
5660
5661 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5662
5663 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5664 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5665 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5666 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5667 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5668
5669 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
5670 check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
5671 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
5672 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
5673 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5674 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5675 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
5676 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
5677
5678 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5679
5680 check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt
5681
5682 if ! disabled w32threads && ! enabled pthreads; then
5683     check_func_headers "windows.h process.h" _beginthreadex &&
5684         enable w32threads || disable w32threads
5685     if ! enabled w32threads && enabled winrt; then
5686         check_func_headers "windows.h" CreateThread &&
5687             enable w32threads || disable w32threads
5688     fi
5689 fi
5690
5691 # check for some common methods of building with pthread support
5692 # do this before the optional library checks as some of them require pthreads
5693 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5694     enable pthreads
5695     if check_func pthread_join -pthread && check_func pthread_create -pthread; then
5696         add_cflags -pthread
5697         add_extralibs -pthread
5698     elif check_func pthread_join -pthreads && check_func pthread_create -pthreads; then
5699         add_cflags -pthreads
5700         add_extralibs -pthreads
5701     elif check_func pthread_join -ldl -pthread && check_func pthread_create -ldl -pthread; then
5702         add_cflags -ldl -pthread
5703         add_extralibs -ldl -pthread
5704     elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
5705         add_extralibs -lpthreadGC2
5706     elif check_lib pthread.h pthread_join -lpthread && check_lib pthread.h pthread_create -lpthread; then
5707         :
5708     elif ! check_func pthread_join && ! check_func pthread_create; then
5709         disable pthreads
5710     fi
5711     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5712 fi
5713
5714
5715 if enabled pthreads; then
5716   check_func pthread_cancel
5717 fi
5718
5719 enabled pthreads &&
5720     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)"
5721
5722 disabled  zlib || check_lib  zlib.h      zlibVersion    -lz    || disable  zlib
5723 disabled bzlib || check_lib bzlib.h BZ2_bzlibVersion    -lbz2  || disable bzlib
5724 disabled  lzma || check_lib  lzma.h lzma_version_number -llzma || disable lzma
5725
5726 check_lib math.h sin -lm && LIBM="-lm"
5727 disabled crystalhd || check_lib "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd || disable crystalhd
5728
5729 atan2f_args=2
5730 copysign_args=2
5731 hypot_args=2
5732 ldexpf_args=2
5733 powf_args=2
5734
5735 for func in $MATH_FUNCS; do
5736     eval check_mathfunc $func \${${func}_args:-1} $LIBM
5737 done
5738
5739 for func in $COMPLEX_FUNCS; do
5740     eval check_complexfunc $func \${${func}_args:-1}
5741 done
5742
5743 # these are off by default, so fail if requested and not available
5744 enabled avfoundation_indev && { check_header_objcc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
5745 enabled avfoundation_indev && { check_lib CoreGraphics/CoreGraphics.h CGGetActiveDisplayList -framework CoreGraphics ||
5746                                 check_lib ApplicationServices/ApplicationServices.h CGGetActiveDisplayList -framework ApplicationServices; }
5747 enabled cuda              && check_header cuda.h # this is not a dependency
5748 enabled cuvid             && { enabled cuda ||
5749                                die "ERROR: CUVID requires CUDA"; }
5750 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5751 enabled coreimage_filter  && { check_header_objcc QuartzCore/CoreImage.h || disable coreimage_filter; }
5752 enabled coreimagesrc_filter && { check_header_objcc QuartzCore/CoreImage.h || disable coreimagesrc_filter; }
5753 enabled decklink          && { { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; } &&
5754                                { check_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a060100" || die "ERROR: Decklink API version must be >= 10.6.1."; } }
5755 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
5756 enabled gmp               && require gmp gmp.h mpz_export -lgmp
5757 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
5758 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads &&
5759                                check_lib "dlfcn.h" dlopen -ldl || die "ERROR: jni not found"; }
5760 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
5761 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5762 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
5763 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
5764 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
5765 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5766                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
5767                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5768 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
5769 enabled libdc1394         && require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new
5770 enabled libfdk_aac        && { use_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5771                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5772                                  warn "using libfdk without pkg-config"; } }
5773 flite_extralibs="-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"
5774 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
5775 enabled fontconfig        && enable libfontconfig
5776 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
5777 enabled libfreetype       && require_pkg_config freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
5778 enabled libfribidi        && require_pkg_config fribidi fribidi.h fribidi_version_info
5779 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
5780 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5781                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
5782                                done || die "ERROR: libgsm not found"; }
5783 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
5784 enabled libkvazaar        && require_pkg_config "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
5785 enabled libmfx            && require_pkg_config libmfx "mfx/mfxvideo.h" MFXInit
5786 enabled libmodplug        && require_pkg_config libmodplug libmodplug/modplug.h ModPlug_Load
5787 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5788 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
5789 enabled libnpp            && require libnpp npp.h nppGetLibVersion -lnppi -lnppc
5790 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5791 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5792 enabled libopencv         && { check_header opencv2/core/core_c.h &&
5793                                { use_pkg_config opencv opencv2/core/core_c.h cvCreateImageHeader ||
5794                                  require opencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
5795                                require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader; }
5796 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
5797 enabled libopenjpeg       && { { check_lib openjpeg-2.1/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5798                                check_lib openjpeg-2.1/openjpeg.h opj_version -lopenjp2 ||
5799                                { check_lib openjpeg-2.0/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5800                                { check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5801                                { check_lib openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5802                                die "ERROR: libopenjpeg not found"; }
5803 enabled libopenmpt        && require_pkg_config "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create
5804 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
5805 enabled libpulse          && require_pkg_config libpulse pulse/pulseaudio.h pa_context_new
5806 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
5807 enabled librubberband     && require_pkg_config "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new
5808 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
5809 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
5810 enabled libsmbclient      && { use_pkg_config smbclient libsmbclient.h smbc_init ||
5811                                require smbclient libsmbclient.h smbc_init -lsmbclient; }
5812 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy
5813 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr && LIBSOXR="-lsoxr"
5814 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
5815 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
5816 enabled libtesseract      && require_pkg_config tesseract tesseract/capi.h TessBaseAPICreate
5817 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
5818 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
5819                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
5820                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
5821 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
5822 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
5823 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
5824 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
5825
5826 enabled libvpx            && {
5827     enabled libvpx_vp8_decoder && {
5828         use_pkg_config "vpx >= 0.9.1" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
5829             check_lib "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
5830                 die "ERROR: libvpx decoder version must be >=0.9.1";
5831     }
5832     enabled libvpx_vp8_encoder && {
5833         use_pkg_config "vpx >= 0.9.7" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
5834             check_lib "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
5835                 die "ERROR: libvpx encoder version must be >=0.9.7";
5836     }
5837     enabled libvpx_vp9_decoder && {
5838         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
5839             check_lib "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx ||
5840                 disable libvpx_vp9_decoder;
5841     }
5842     enabled libvpx_vp9_encoder && {
5843         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
5844             check_lib "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx ||
5845                 disable libvpx_vp9_encoder;
5846     }
5847     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
5848         die "libvpx enabled but no supported decoders found"
5849     fi
5850 }
5851
5852 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
5853 enabled libwebp           && {
5854     enabled libwebp_encoder      && require_pkg_config "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
5855     enabled libwebp_anim_encoder && { use_pkg_config "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit || disable libwebp_anim_encoder; } }
5856 enabled libx264           && { use_pkg_config x264 "stdint.h x264.h" x264_encoder_encode ||
5857                                { require libx264 "stdint.h x264.h" x264_encoder_encode -lx264 &&
5858                                  warn "using libx264 without pkg-config"; } } &&
5859                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
5860                                die "ERROR: libx264 must be installed and version must be >= 0.118."; } &&
5861                              { check_cpp_condition x264.h "X264_MPEG2" &&
5862                                enable libx262; }
5863 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
5864                              { check_cpp_condition x265.h "X265_BUILD >= 68" ||
5865                                die "ERROR: libx265 version must be >= 68."; }
5866 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode -lxavs
5867 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
5868 enabled libzimg           && require_pkg_config "zimg >= 2.3.0" zimg.h zimg_get_api_version
5869 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
5870 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi &&
5871                              { check_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
5872                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
5873 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
5874 enabled mmal              && { check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
5875                                { ! enabled cross_compile &&
5876                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
5877                                  add_ldflags -L/opt/vc/lib/ &&
5878                                  check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
5879                                die "ERROR: mmal not found" &&
5880                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
5881 enabled netcdf            && require_pkg_config netcdf netcdf.h nc_inq_libvers
5882 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
5883                                check_lib 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
5884                                die "ERROR: openal not found"; } &&
5885                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
5886                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
5887 enabled opencl            && { check_lib OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
5888                                check_lib CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
5889                                die "ERROR: opencl not found"; } &&
5890                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
5891                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
5892                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
5893 enabled opengl            && { check_lib GL/glx.h glXGetProcAddress "-lGL" ||
5894                                check_lib windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
5895                                check_lib OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
5896                                check_lib ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
5897                                die "ERROR: opengl not found."
5898                              }
5899 enabled omx_rpi           && { check_header OMX_Core.h ||
5900                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_header OMX_Core.h ; } ||
5901                                die "ERROR: OpenMAX IL headers not found"; }
5902 enabled omx               && { check_header OMX_Core.h || die "ERROR: OpenMAX IL headers not found"; }
5903 enabled openssl           && { use_pkg_config openssl openssl/ssl.h OPENSSL_init_ssl ||
5904                                use_pkg_config openssl openssl/ssl.h SSL_library_init ||
5905                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
5906                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
5907                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
5908                                die "ERROR: openssl not found"; }
5909 enabled qtkit_indev      && { check_header_objcc QTKit/QTKit.h || disable qtkit_indev; }
5910
5911 if enabled gcrypt; then
5912     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
5913     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
5914         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
5915         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
5916         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
5917             die "ERROR: gcrypt not found"
5918         add_cflags $gcrypt_cflags && add_extralibs $gcrypt_extralibs
5919     else
5920         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
5921     fi
5922 fi
5923
5924 disabled sdl && disable sdl2
5925 if ! disabled sdl2; then
5926     SDL2_CONFIG="${cross_prefix}sdl2-config"
5927     if check_pkg_config sdl2 SDL_events.h SDL_PollEvent; then
5928         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
5929         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
5930         check_func SDL_Init $sdl2_extralibs $sdl2_cflags && enable sdl2
5931     else
5932       if "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
5933         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
5934         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
5935         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
5936         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
5937         check_func SDL_Init $sdl2_extralibs $sdl2_cflags && enable sdl2
5938       fi
5939     fi
5940     if test $target_os = "mingw32"; then
5941         sdl2_extralibs="$sdl2_extralibs -mconsole"
5942     fi
5943 fi
5944 enabled sdl2 && enable sdl && add_cflags $sdl2_cflags && add_extralibs $sdl2_extralibs
5945
5946 disabled securetransport || { check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5947     check_lib "Security/SecureTransport.h Security/Security.h" "SSLCreateContext SecItemImport" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5948     enable securetransport; }
5949
5950 disabled schannel || { check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
5951                        check_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" && enable schannel && add_extralibs -lsecur32; }
5952
5953 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
5954 enabled makeinfo \
5955     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
5956     && enable makeinfo_html || disable makeinfo_html
5957 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
5958 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
5959 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
5960 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
5961
5962 check_header linux/fb.h
5963 check_header linux/videodev.h
5964 check_header linux/videodev2.h
5965 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5966
5967 check_header sys/videoio.h
5968 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5969
5970 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
5971 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
5972 # w32api 3.12 had it defined wrong
5973 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
5974
5975 check_type "dshow.h" IBaseFilter
5976
5977 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
5978 { check_header dev/bktr/ioctl_meteor.h &&
5979   check_header dev/bktr/ioctl_bt848.h; } ||
5980 { check_header machine/ioctl_meteor.h &&
5981   check_header machine/ioctl_bt848.h; } ||
5982 { check_header dev/video/meteor/ioctl_meteor.h &&
5983   check_header dev/video/bktr/ioctl_bt848.h; } ||
5984 check_header dev/ic/bt8xx.h
5985
5986 if check_struct sys/soundcard.h audio_buf_info bytes; then
5987     enable_safe sys/soundcard.h
5988 else
5989     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
5990     #include <sys/soundcard.h>
5991     audio_buf_info abc;
5992 EOF
5993 fi
5994 check_header soundcard.h
5995
5996 enabled_any alsa_indev alsa_outdev &&
5997     check_lib alsa/asoundlib.h snd_pcm_htimestamp -lasound && enable alsa
5998
5999 enabled jack_indev && check_lib jack/jack.h jack_client_open -ljack && enable jack &&
6000     check_func jack_port_get_latency_range -ljack
6001
6002 enabled_any sndio_indev sndio_outdev && check_lib sndio.h sio_open -lsndio && enable sndio
6003
6004 if enabled libcdio; then
6005     check_lib "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6006     check_lib "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6007     die "ERROR: No usable libcdio/cdparanoia found"
6008 fi
6009
6010 if ! disabled libxcb; then
6011     check_pkg_config "xcb >= 1.4" xcb/xcb.h xcb_connect || {
6012         enabled libxcb && die "ERROR: libxcb >= 1.4 not found";
6013     } && enable libxcb
6014
6015 if enabled libxcb; then
6016     disabled libxcb_shm || {
6017         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
6018             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
6019         } && check_header sys/shm.h && enable libxcb_shm; }
6020
6021     disabled libxcb_xfixes || {
6022         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
6023             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
6024         } && enable libxcb_xfixes; }
6025
6026     disabled libxcb_shape || {
6027         check_pkg_config xcb-shape xcb/shape.h xcb_shape_get_rectangles || {
6028             enabled libxcb_shape && die "ERROR: libxcb_shape not found";
6029         } && enable libxcb_shape; }
6030
6031     add_cflags $xcb_cflags $xcb_shm_cflags $xcb_xfixes_cflags $xcb_shape_cflags
6032     add_extralibs $xcb_extralibs $xcb_shm_extralibs $xcb_xfixes_extralibs $xcb_shape_extralibs
6033 fi
6034 fi
6035
6036 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6037
6038 enabled dxva2api_h &&
6039     check_cc <<EOF && enable dxva2api_cobj
6040 #define _WIN32_WINNT 0x0600
6041 #define COBJMACROS
6042 #include <windows.h>
6043 #include <d3d9.h>
6044 #include <dxva2api.h>
6045 int main(void) { IDirectXVideoDecoder *o = NULL; IDirectXVideoDecoder_Release(o); return 0; }
6046 EOF
6047
6048 enabled dxva2 &&
6049     check_lib windows.h CoTaskMemFree -lole32 &&
6050     enable dxva2_lib
6051
6052 enabled vaapi &&
6053     check_lib va/va.h vaInitialize -lva ||
6054     disable vaapi
6055
6056 enabled vaapi &&
6057     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
6058     disable vaapi
6059
6060 enabled vaapi &&
6061     check_lib "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm &&
6062     enable vaapi_drm
6063
6064 enabled vaapi &&
6065     check_lib "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 -lX11 &&
6066     enable vaapi_x11
6067
6068 enabled vdpau &&
6069     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
6070     disable vdpau
6071
6072 enabled vdpau &&
6073     check_lib "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11 &&
6074     enable vdpau_x11
6075
6076 if enabled x86; then
6077     case $target_os in
6078         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6079             ;;
6080         *)
6081             disable cuda cuvid nvenc
6082             ;;
6083     esac
6084 else
6085     disable cuda cuvid nvenc
6086 fi
6087
6088 enabled nvenc &&
6089     check_cc -I$source_path <<EOF || disable nvenc
6090 #include "compat/nvenc/nvEncodeAPI.h"
6091 NV_ENCODE_API_FUNCTION_LIST flist;
6092 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6093 int main(void) { return 0; }
6094 EOF
6095
6096 # Funny iconv installations are not unusual, so check it after all flags have been set
6097 disabled iconv || check_func_headers iconv.h iconv || check_lib iconv.h iconv -liconv || disable iconv
6098
6099 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6100
6101 # add some useful compiler flags if supported
6102 check_cflags -Wdeclaration-after-statement
6103 check_cflags -Wall
6104 check_cflags -Wdisabled-optimization
6105 check_cflags -Wpointer-arith
6106 check_cflags -Wredundant-decls
6107 check_cflags -Wwrite-strings
6108 check_cflags -Wtype-limits
6109 check_cflags -Wundef
6110 check_cflags -Wmissing-prototypes
6111 check_cflags -Wno-pointer-to-int-cast
6112 check_cflags -Wstrict-prototypes
6113 check_cflags -Wempty-body
6114
6115 if enabled extra_warnings; then
6116     check_cflags -Wcast-qual
6117     check_cflags -Wextra
6118     check_cflags -Wpedantic
6119 fi
6120
6121 check_disable_warning(){
6122     warning_flag=-W${1#-Wno-}
6123     test_cflags $warning_flag && add_cflags $1
6124 }
6125
6126 check_disable_warning -Wno-parentheses
6127 check_disable_warning -Wno-switch
6128 check_disable_warning -Wno-format-zero-length
6129 check_disable_warning -Wno-pointer-sign
6130 check_disable_warning -Wno-unused-const-variable
6131
6132 check_disable_warning_headers(){
6133     warning_flag=-W${1#-Wno-}
6134     test_cflags $warning_flag && add_cflags_headers $1
6135 }
6136
6137 check_disable_warning_headers -Wno-deprecated-declarations
6138 check_disable_warning_headers -Wno-unused-variable
6139
6140 # add some linker flags
6141 check_ldflags -Wl,--warn-common
6142 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6143 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
6144 enabled rpath && add_ldlibflags -Wl,-rpath,$libdir
6145 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6146
6147 # add some strip flags
6148 # -wN '..@*' is more selective than -x, but not available everywhere.
6149 check_stripflags -wN \'..@*\' || check_stripflags -x
6150
6151 enabled neon_clobber_test &&
6152     check_ldflags -Wl,--wrap,avcodec_open2              \
6153                   -Wl,--wrap,avcodec_decode_audio4      \
6154                   -Wl,--wrap,avcodec_decode_video2      \
6155                   -Wl,--wrap,avcodec_decode_subtitle2   \
6156                   -Wl,--wrap,avcodec_encode_audio2      \
6157                   -Wl,--wrap,avcodec_encode_video2      \
6158                   -Wl,--wrap,avcodec_encode_subtitle    \
6159                   -Wl,--wrap,avcodec_send_packet        \
6160                   -Wl,--wrap,avcodec_receive_packet     \
6161                   -Wl,--wrap,avcodec_send_frame         \
6162                   -Wl,--wrap,avcodec_receive_frame      \
6163                   -Wl,--wrap,swr_convert                \
6164                   -Wl,--wrap,avresample_convert ||
6165     disable neon_clobber_test
6166
6167 enabled xmm_clobber_test &&
6168     check_ldflags -Wl,--wrap,avcodec_open2              \
6169                   -Wl,--wrap,avcodec_decode_audio4      \
6170                   -Wl,--wrap,avcodec_decode_video2      \
6171                   -Wl,--wrap,avcodec_decode_subtitle2   \
6172                   -Wl,--wrap,avcodec_encode_audio2      \
6173                   -Wl,--wrap,avcodec_encode_video2      \
6174                   -Wl,--wrap,avcodec_encode_subtitle    \
6175                   -Wl,--wrap,avcodec_send_packet        \
6176                   -Wl,--wrap,avcodec_receive_packet     \
6177                   -Wl,--wrap,avcodec_send_frame         \
6178                   -Wl,--wrap,avcodec_receive_frame      \
6179                   -Wl,--wrap,swr_convert                \
6180                   -Wl,--wrap,avresample_convert         \
6181                   -Wl,--wrap,sws_scale ||
6182     disable xmm_clobber_test
6183
6184 check_ld "cc" <<EOF && enable proper_dce
6185 extern const int array[512];
6186 static inline int func(void) { return array[0]; }
6187 int main(void) { return 0; }
6188 EOF
6189
6190 if enabled proper_dce; then
6191     echo "X { local: *; };" > $TMPV
6192     if test_ldflags -Wl,${version_script},$TMPV; then
6193         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6194         check_cc <<EOF && enable symver_asm_label
6195 void ff_foo(void) __asm__ ("av_foo@VERSION");
6196 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6197 EOF
6198         check_cc <<EOF && enable symver_gnu_asm
6199 __asm__(".symver ff_foo,av_foo@VERSION");
6200 void ff_foo(void) {}
6201 EOF
6202     fi
6203 fi
6204
6205 if [ -z "$optflags" ]; then
6206     if enabled small; then
6207         optflags=$cflags_size
6208     elif enabled optimizations; then
6209         optflags=$cflags_speed
6210     else
6211         optflags=$cflags_noopt
6212     fi
6213 fi
6214
6215 check_optflags(){
6216     check_cflags "$@"
6217     enabled lto && check_ldflags "$@"
6218 }
6219
6220
6221 if enabled lto; then
6222     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6223     check_cflags  -flto
6224     check_ldflags -flto $cpuflags
6225     disable inline_asm_direct_symbol_refs
6226 fi
6227
6228 check_optflags $optflags
6229 check_optflags -fno-math-errno
6230 check_optflags -fno-signed-zeros
6231
6232 enabled ftrapv && check_cflags -ftrapv
6233
6234 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6235 int x;
6236 EOF
6237
6238
6239 if enabled icc; then
6240     # Just warnings, no remarks
6241     check_cflags -w1
6242     # -wd: Disable following warnings
6243     # 144, 167, 556: -Wno-pointer-sign
6244     # 188: enumerated type mixed with another type
6245     # 1292: attribute "foo" ignored
6246     # 1419: external declaration in primary source file
6247     # 10006: ignoring unknown option -fno-signed-zeros
6248     # 10148: ignoring unknown option -Wno-parentheses
6249     # 10156: ignoring option '-W'; no argument required
6250     # 13200: No EMMS instruction before call to function
6251     # 13203: No EMMS instruction before return from function
6252     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6253     # 11030: Warning unknown option --as-needed
6254     # 10156: ignoring option '-export'; no argument required
6255     check_ldflags -wd10156,11030
6256     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6257     enable ebp_available
6258     # The test above does not test linking
6259     enabled lto && disable symver_asm_label
6260     if enabled x86_32; then
6261         icc_version=$($cc -dumpversion)
6262         test ${icc_version%%.*} -ge 11 &&
6263             check_cflags -falign-stack=maintain-16-byte ||
6264             disable aligned_stack
6265     fi
6266 elif enabled ccc; then
6267     # disable some annoying warnings
6268     add_cflags -msg_disable bitnotint
6269     add_cflags -msg_disable mixfuncvoid
6270     add_cflags -msg_disable nonstandcast
6271     add_cflags -msg_disable unsupieee
6272 elif enabled gcc; then
6273     check_optflags -fno-tree-vectorize
6274     check_cflags -Werror=format-security
6275     check_cflags -Werror=implicit-function-declaration
6276     check_cflags -Werror=missing-prototypes
6277     check_cflags -Werror=return-type
6278     check_cflags -Werror=vla
6279     check_cflags -Wformat
6280     check_cflags -fdiagnostics-color=auto
6281     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6282 elif enabled llvm_gcc; then
6283     check_cflags -mllvm -stack-alignment=16
6284 elif enabled clang; then
6285     check_cflags -mllvm -stack-alignment=16
6286     check_cflags -mstack-alignment=16
6287     check_cflags -Qunused-arguments
6288     check_cflags -Werror=implicit-function-declaration
6289     check_cflags -Werror=missing-prototypes
6290     check_cflags -Werror=return-type
6291 elif enabled cparser; then
6292     add_cflags -Wno-missing-variable-declarations
6293     add_cflags -Wno-empty-statement
6294 elif enabled armcc; then
6295     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6296     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6297     # 2523: use of inline assembly is deprecated
6298     add_cflags -W${armcc_opt},--diag_suppress=2523
6299     add_cflags -W${armcc_opt},--diag_suppress=1207
6300     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6301     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6302     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6303     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6304 elif enabled tms470; then
6305     add_cflags -pds=824 -pds=837
6306     disable inline_asm
6307 elif enabled pathscale; then
6308     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6309 elif enabled_any msvc icl; then
6310     enabled x86_32 && disable aligned_stack
6311     enabled_all x86_32 debug && add_cflags -Oy-
6312     enabled debug && add_ldflags -debug
6313     enable pragma_deprecated
6314     if enabled icl; then
6315         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6316         # (correctly) on icl 13.x.
6317         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6318             add_cflags -Qansi-alias
6319         # Some inline asm is not compilable in debug
6320         if enabled debug; then
6321             disable ebp_available
6322             disable ebx_available
6323         fi
6324     fi
6325     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6326     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
6327     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6328     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6329     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6330     # MSVC 2013 and newer can handle it fine.
6331     # If this declspec fails, force including stdlib.h before the restrict redefinition
6332     # happens in config.h.
6333     if [ $_restrict != restrict ]; then
6334         check_cc <<EOF || add_cflags -FIstdlib.h
6335 __declspec($_restrict) void* foo(int);
6336 EOF
6337     fi
6338     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6339     # Issue has been fixed in MSVC v19.00.24218.
6340     check_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6341         check_cflags -d2SSAOptimizer-
6342     # enable utf-8 source processing on VS2015 U2 and newer
6343     check_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6344         add_cflags -utf-8
6345 fi
6346
6347 for pfx in "" host_; do
6348     varname=${pfx%_}cc_type
6349     eval "type=\$$varname"
6350     if [ $type = "msvc" ]; then
6351         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6352 static inline int foo(int a) { return a; }
6353 EOF
6354     fi
6355 done
6356
6357 case $as_type in
6358     clang)
6359         add_asflags -Qunused-arguments
6360     ;;
6361 esac
6362
6363 case $ld_type in
6364     clang)
6365         check_ldflags -Qunused-arguments
6366     ;;
6367 esac
6368
6369 case $target_os in
6370     osf1)
6371         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
6372     ;;
6373 esac
6374
6375 enable frame_thread_encoder
6376
6377 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6378
6379 check_deps $CONFIG_LIST       \
6380            $CONFIG_EXTRA      \
6381            $HAVE_LIST         \
6382            $ALL_COMPONENTS    \
6383
6384 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"
6385
6386
6387 if test $target_os = "haiku"; then
6388     disable memalign
6389     disable posix_memalign
6390 fi
6391
6392 # add_dep lib dep
6393 # -> enable ${lib}_deps_${dep}
6394 # -> add $dep to ${lib}_deps only once
6395 add_dep() {
6396     lib=$1
6397     dep=$2
6398     enabled "${lib}_deps_${dep}" && return 0
6399     enable  "${lib}_deps_${dep}"
6400     prepend "${lib}_deps" $dep
6401 }
6402
6403 # merge deps lib components
6404 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
6405 merge_deps() {
6406     lib=$1
6407     shift
6408     for comp in $*; do
6409         enabled $comp || continue
6410         eval "dep=\"\$${comp}_deps\""
6411         for d in $dep; do
6412             add_dep $lib $d
6413         done
6414     done
6415 }
6416
6417 merge_deps libavfilter $FILTER_LIST
6418
6419 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6420
6421 for thread in $THREADS_LIST; do
6422     if enabled $thread; then
6423         test -n "$thread_type" &&
6424             die "ERROR: Only one thread type must be selected." ||
6425             thread_type="$thread"
6426     fi
6427 done
6428
6429 if disabled stdatomic_h; then
6430     if enabled atomics_gcc; then
6431         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6432     elif enabled atomics_win32; then
6433         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6434     elif enabled atomics_suncc; then
6435         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6436     elif enabled pthreads; then
6437         add_compat atomics/pthread/stdatomic.o
6438         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6439     else
6440         enabled threads && die "Threading is enabled, but no atomics are available"
6441         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6442     fi
6443 fi
6444
6445 # Check if requested libraries were found.
6446 for lib in $AUTODETECT_LIBS; do
6447     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6448 done
6449
6450 enabled zlib && add_cppflags -DZLIB_CONST
6451
6452 # conditional library dependencies, in linking order
6453 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6454 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6455 enabled aresample_filter    && prepend avfilter_deps "swresample"
6456 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6457 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6458 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6459 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6460 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6461 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6462 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6463 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6464 enabled pan_filter          && prepend avfilter_deps "swresample"
6465 enabled pp_filter           && prepend avfilter_deps "postproc"
6466 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6467 enabled resample_filter && prepend avfilter_deps "avresample"
6468 enabled sab_filter          && prepend avfilter_deps "swscale"
6469 enabled scale_filter    && prepend avfilter_deps "swscale"
6470 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6471 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6472 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6473 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6474 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6475 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6476 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6477 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6478 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6479
6480 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6481
6482 enabled opus_decoder    && prepend avcodec_deps "swresample"
6483
6484 expand_deps(){
6485     lib_deps=${1}_deps
6486     eval "deps=\$$lib_deps"
6487     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6488     unique $lib_deps
6489 }
6490
6491 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6492 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6493
6494 map 'expand_deps $v' $LIBRARY_LIST
6495
6496 license="LGPL version 2.1 or later"
6497 if enabled nonfree; then
6498     license="nonfree and unredistributable"
6499 elif enabled gplv3; then
6500     license="GPL version 3 or later"
6501 elif enabled lgplv3; then
6502     license="LGPL version 3 or later"
6503 elif enabled gpl; then
6504     license="GPL version 2 or later"
6505 fi
6506
6507 if test "$quiet" != "yes"; then
6508
6509 echo "install prefix            $prefix"
6510 echo "source path               $source_path"
6511 echo "C compiler                $cc"
6512 echo "C library                 $libc_type"
6513 if test "$host_cc" != "$cc"; then
6514     echo "host C compiler           $host_cc"
6515     echo "host C library            $host_libc_type"
6516 fi
6517 echo "ARCH                      $arch ($cpu)"
6518 if test "$build_suffix" != ""; then
6519     echo "build suffix              $build_suffix"
6520 fi
6521 if test "$progs_suffix" != ""; then
6522     echo "progs suffix              $progs_suffix"
6523 fi
6524 if test "$extra_version" != ""; then
6525     echo "version string suffix     $extra_version"
6526 fi
6527 echo "big-endian                ${bigendian-no}"
6528 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6529 if enabled x86; then
6530     echo "${yasmexe}                      ${yasm-no}"
6531     echo "MMX enabled               ${mmx-no}"
6532     echo "MMXEXT enabled            ${mmxext-no}"
6533     echo "3DNow! enabled            ${amd3dnow-no}"
6534     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6535     echo "SSE enabled               ${sse-no}"
6536     echo "SSSE3 enabled             ${ssse3-no}"
6537     echo "AESNI enabled             ${aesni-no}"
6538     echo "AVX enabled               ${avx-no}"
6539     echo "XOP enabled               ${xop-no}"
6540     echo "FMA3 enabled              ${fma3-no}"
6541     echo "FMA4 enabled              ${fma4-no}"
6542     echo "i686 features enabled     ${i686-no}"
6543     echo "CMOV is fast              ${fast_cmov-no}"
6544     echo "EBX available             ${ebx_available-no}"
6545     echo "EBP available             ${ebp_available-no}"
6546 fi
6547 if enabled aarch64; then
6548     echo "NEON enabled              ${neon-no}"
6549     echo "VFP enabled               ${vfp-no}"
6550 fi
6551 if enabled arm; then
6552     echo "ARMv5TE enabled           ${armv5te-no}"
6553     echo "ARMv6 enabled             ${armv6-no}"
6554     echo "ARMv6T2 enabled           ${armv6t2-no}"
6555     echo "VFP enabled               ${vfp-no}"
6556     echo "NEON enabled              ${neon-no}"
6557     echo "THUMB enabled             ${thumb-no}"
6558 fi
6559 if enabled mips; then
6560     echo "MIPS FPU enabled          ${mipsfpu-no}"
6561     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6562     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6563     echo "MIPS MSA enabled          ${msa-no}"
6564     echo "LOONGSON MMI enabled      ${mmi-no}"
6565 fi
6566 if enabled ppc; then
6567     echo "AltiVec enabled           ${altivec-no}"
6568     echo "VSX enabled               ${vsx-no}"
6569     echo "POWER8 enabled            ${power8-no}"
6570     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6571     echo "dcbzl available           ${dcbzl-no}"
6572 fi
6573 echo "debug symbols             ${debug-no}"
6574 echo "strip symbols             ${stripping-no}"
6575 echo "optimize for size         ${small-no}"
6576 echo "optimizations             ${optimizations-no}"
6577 echo "static                    ${static-no}"
6578 echo "shared                    ${shared-no}"
6579 echo "postprocessing support    ${postproc-no}"
6580 echo "network support           ${network-no}"
6581 echo "threading support         ${thread_type-no}"
6582 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6583 echo "texi2html enabled         ${texi2html-no}"
6584 echo "perl enabled              ${perl-no}"
6585 echo "pod2man enabled           ${pod2man-no}"
6586 echo "makeinfo enabled          ${makeinfo-no}"
6587 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6588 test -n "$random_seed" &&
6589     echo "random seed               ${random_seed}"
6590 echo
6591
6592 echo "External libraries:"
6593 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_in_columns
6594 echo
6595
6596 echo "External libraries providing hardware acceleration:"
6597 print_enabled '' $HWACCEL_LIBRARY_LIST | print_in_columns
6598 echo
6599
6600 echo "Libraries:"
6601 print_enabled '' $LIBRARY_LIST | print_in_columns
6602 echo
6603
6604 echo "Programs:"
6605 print_enabled '' $PROGRAM_LIST | print_in_columns
6606 echo
6607
6608 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6609     echo "Enabled ${type}s:"
6610     eval list=\$$(toupper $type)_LIST
6611     print_enabled '_*' $list | print_in_columns
6612     echo
6613 done
6614
6615 echo "License: $license"
6616
6617 echo "Creating configuration files ..."
6618
6619 fi # test "$quiet" != "yes"
6620
6621 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6622
6623 enabled stripping || strip="echo skipping strip"
6624
6625 config_files="$TMPH config.mak doc/config.texi"
6626
6627 cat > config.mak <<EOF
6628 # Automatically generated by configure - do not modify!
6629 ifndef FFMPEG_CONFIG_MAK
6630 FFMPEG_CONFIG_MAK=1
6631 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6632 prefix=$prefix
6633 LIBDIR=\$(DESTDIR)$libdir
6634 SHLIBDIR=\$(DESTDIR)$shlibdir
6635 INCDIR=\$(DESTDIR)$incdir
6636 BINDIR=\$(DESTDIR)$bindir
6637 DATADIR=\$(DESTDIR)$datadir
6638 DOCDIR=\$(DESTDIR)$docdir
6639 MANDIR=\$(DESTDIR)$mandir
6640 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6641 INSTALL_NAME_DIR=$install_name_dir
6642 SRC_PATH=$source_path
6643 SRC_LINK=$source_link
6644 ifndef MAIN_MAKEFILE
6645 SRC_PATH:=\$(SRC_PATH:.%=..%)
6646 endif
6647 CC_IDENT=$cc_ident
6648 ARCH=$arch
6649 INTRINSICS=$intrinsics
6650 CC=$cc
6651 CXX=$cxx
6652 AS=$as
6653 OBJCC=$objcc
6654 LD=$ld
6655 DEPCC=$dep_cc
6656 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6657 DEPAS=$as
6658 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6659 YASM=$yasmexe
6660 DEPYASM=$yasmexe
6661 AR=$ar
6662 ARFLAGS=$arflags
6663 AR_O=$ar_o
6664 RANLIB=$ranlib
6665 STRIP=$strip
6666 CP=cp -p
6667 LN_S=$ln_s
6668 CPPFLAGS=$CPPFLAGS
6669 CFLAGS=$CFLAGS
6670 CXXFLAGS=$CXXFLAGS
6671 OBJCFLAGS=$OBJCFLAGS
6672 ASFLAGS=$ASFLAGS
6673 AS_C=$AS_C
6674 AS_O=$AS_O
6675 OBJCC_C=$OBJCC_C
6676 OBJCC_E=$OBJCC_E
6677 OBJCC_O=$OBJCC_O
6678 CC_C=$CC_C
6679 CC_E=$CC_E
6680 CC_O=$CC_O
6681 CXX_C=$CXX_C
6682 CXX_O=$CXX_O
6683 LD_O=$LD_O
6684 LD_LIB=$LD_LIB
6685 LD_PATH=$LD_PATH
6686 DLLTOOL=$dlltool
6687 WINDRES=$windres
6688 DEPWINDRES=$dep_cc
6689 DOXYGEN=$doxygen
6690 LDFLAGS=$LDFLAGS
6691 LDEXEFLAGS=$LDEXEFLAGS
6692 LDLIBFLAGS=$LDLIBFLAGS
6693 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
6694 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
6695 YASMFLAGS=$YASMFLAGS
6696 BUILDSUF=$build_suffix
6697 PROGSSUF=$progs_suffix
6698 FULLNAME=$FULLNAME
6699 LIBPREF=$LIBPREF
6700 LIBSUF=$LIBSUF
6701 LIBNAME=$LIBNAME
6702 SLIBPREF=$SLIBPREF
6703 SLIBSUF=$SLIBSUF
6704 EXESUF=$EXESUF
6705 EXTRA_VERSION=$extra_version
6706 CCDEP=$CCDEP
6707 CXXDEP=$CXXDEP
6708 CCDEP_FLAGS=$CCDEP_FLAGS
6709 ASDEP=$ASDEP
6710 ASDEP_FLAGS=$ASDEP_FLAGS
6711 CC_DEPFLAGS=$CC_DEPFLAGS
6712 AS_DEPFLAGS=$AS_DEPFLAGS
6713 HOSTCC=$host_cc
6714 HOSTLD=$host_ld
6715 HOSTCFLAGS=$host_cflags
6716 HOSTCPPFLAGS=$host_cppflags
6717 HOSTEXESUF=$HOSTEXESUF
6718 HOSTLDFLAGS=$host_ldflags
6719 HOSTEXTRALIBS=$host_extralibs
6720 DEPHOSTCC=$host_cc
6721 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
6722 HOSTCCDEP=$HOSTCCDEP
6723 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
6724 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
6725 HOSTCC_C=$HOSTCC_C
6726 HOSTCC_O=$HOSTCC_O
6727 HOSTLD_O=$HOSTLD_O
6728 TARGET_EXEC=$target_exec $target_exec_args
6729 TARGET_PATH=$target_path
6730 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
6731 CFLAGS-ffplay=${sdl2_cflags}
6732 CFLAGS_HEADERS=$CFLAGS_HEADERS
6733 ZLIB=$($ldflags_filter -lz)
6734 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
6735 EXTRALIBS=$extralibs
6736 COMPAT_OBJS=$compat_objs
6737 INSTALL=$install
6738 LIBTARGET=${LIBTARGET}
6739 SLIBNAME=${SLIBNAME}
6740 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
6741 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
6742 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
6743 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
6744 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
6745 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
6746 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
6747 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
6748 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
6749 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
6750 NOREDZONE_FLAGS=$noredzone_flags
6751 LIBFUZZER_PATH=$libfuzzer_path
6752 EOF
6753
6754 get_version(){
6755     lcname=lib${1}
6756     name=$(toupper $lcname)
6757     file=$source_path/$lcname/version.h
6758     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
6759     enabled raise_major && eval ${name}_VERSION_MAJOR=$((${name}_VERSION_MAJOR+100))
6760     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
6761     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
6762     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
6763     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
6764 }
6765
6766 map 'get_version $v' $LIBRARY_LIST
6767
6768 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> config.mak' $LIBRARY_LIST
6769
6770 print_program_extralibs(){
6771     eval "program_extralibs=\$${1}_extralibs"
6772     eval echo "EXTRALIBS-${1}=${program_extralibs}" >> config.mak
6773 }
6774
6775 map 'print_program_extralibs $v' $PROGRAM_LIST
6776
6777 cat > $TMPH <<EOF
6778 /* Automatically generated by configure - do not modify! */
6779 #ifndef FFMPEG_CONFIG_H
6780 #define FFMPEG_CONFIG_H
6781 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
6782 #define FFMPEG_LICENSE "$(c_escape $license)"
6783 #define CONFIG_THIS_YEAR 2017
6784 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
6785 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
6786 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
6787 #define av_restrict $_restrict
6788 #define EXTERN_PREFIX "${extern_prefix}"
6789 #define EXTERN_ASM ${extern_prefix}
6790 #define BUILDSUF "$build_suffix"
6791 #define SLIBSUF "$SLIBSUF"
6792 #define HAVE_MMX2 HAVE_MMXEXT
6793 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
6794 EOF
6795
6796 test -n "$assert_level" &&
6797     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
6798
6799 test -n "$malloc_prefix" &&
6800     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
6801
6802 if enabled yasm; then
6803     append config_files $TMPASM
6804     printf '' >$TMPASM
6805 fi
6806
6807 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
6808
6809
6810 mkdir -p doc
6811 mkdir -p tests
6812 mkdir -p tests/api
6813 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
6814
6815 print_config ARCH_   "$config_files" $ARCH_LIST
6816 print_config HAVE_   "$config_files" $HAVE_LIST
6817 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
6818                                      $CONFIG_EXTRA      \
6819                                      $ALL_COMPONENTS    \
6820
6821 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
6822 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
6823
6824 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
6825 cp_if_changed $TMPH config.h
6826 touch .config
6827
6828 enabled yasm && cp_if_changed $TMPASM config.asm
6829
6830 cat > $TMPH <<EOF
6831 /* Generated by ffconf */
6832 #ifndef AVUTIL_AVCONFIG_H
6833 #define AVUTIL_AVCONFIG_H
6834 EOF
6835
6836 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
6837
6838 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
6839
6840 cp_if_changed $TMPH libavutil/avconfig.h
6841
6842 # generate the lists of enabled components
6843 print_enabled_components(){
6844     file=$1
6845     struct_name=$2
6846     name=$3
6847     shift 3
6848     echo "static const $struct_name *$name[] = {" > $TMPH
6849     for c in $*; do
6850         enabled $c && printf "    &ff_%s,\n" $c >> $TMPH
6851     done
6852     echo "    NULL };" >> $TMPH
6853     cp_if_changed $TMPH $file
6854 }
6855
6856 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
6857 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
6858
6859 if test -n "$WARNINGS"; then
6860     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
6861     enabled fatal_warnings && exit 1
6862 fi
6863
6864 # build pkg-config files
6865
6866 lib_version(){
6867     eval printf "\"lib${1}${build_suffix} >= \$LIB$(toupper ${1})_VERSION, \""
6868 }
6869
6870 pkgconfig_generate(){
6871     name=$1
6872     shortname=${name#lib}${build_suffix}
6873     comment=$2
6874     version=$3
6875     libs=$4
6876     requires=$(map 'lib_version $v' $(eval echo \$${name#lib}_deps))
6877     requires=${requires%, }
6878     enabled ${name#lib} || return 0
6879     mkdir -p $name
6880     cat <<EOF > $name/$name${build_suffix}.pc
6881 prefix=$prefix
6882 exec_prefix=\${prefix}
6883 libdir=$libdir
6884 includedir=$incdir
6885
6886 Name: $name
6887 Description: $comment
6888 Version: $version
6889 Requires: $(enabled shared || echo $requires)
6890 Requires.private: $(enabled shared && echo $requires)
6891 Conflicts:
6892 Libs: -L\${libdir} $(enabled rpath && echo "-Wl,-rpath,\${libdir}") -l${shortname} $(enabled shared || echo $libs)
6893 Libs.private: $(enabled shared && echo $libs)
6894 Cflags: -I\${includedir}
6895 EOF
6896
6897 mkdir -p doc/examples/pc-uninstalled
6898 includedir=${source_path}
6899 [ "$includedir" = . ] && includedir="\${pcfiledir}/../../.."
6900     cat <<EOF > doc/examples/pc-uninstalled/${name}-uninstalled.pc
6901 prefix=
6902 exec_prefix=
6903 libdir=\${pcfiledir}/../../../$name
6904 includedir=${includedir}
6905
6906 Name: $name
6907 Description: $comment
6908 Version: $version
6909 Requires: $requires
6910 Conflicts:
6911 Libs: -L\${libdir} -Wl,-rpath,\${libdir} -l${shortname} $(enabled shared || echo $libs)
6912 Cflags: -I\${includedir}
6913 EOF
6914 }
6915
6916 pkgconfig_generate libavutil     "FFmpeg utility library"               "$LIBAVUTIL_VERSION"     "$LIBRT $LIBM"
6917 pkgconfig_generate libavcodec    "FFmpeg codec library"                 "$LIBAVCODEC_VERSION"    "$extralibs"
6918 pkgconfig_generate libavformat   "FFmpeg container format library"      "$LIBAVFORMAT_VERSION"   "$extralibs"
6919 pkgconfig_generate libavdevice   "FFmpeg device handling library"       "$LIBAVDEVICE_VERSION"   "$extralibs"
6920 pkgconfig_generate libavfilter   "FFmpeg audio/video filtering library" "$LIBAVFILTER_VERSION"   "$extralibs"
6921 pkgconfig_generate libpostproc   "FFmpeg postprocessing library"        "$LIBPOSTPROC_VERSION"   ""
6922 pkgconfig_generate libavresample "Libav audio resampling library"       "$LIBAVRESAMPLE_VERSION" "$LIBM"
6923 pkgconfig_generate libswscale    "FFmpeg image rescaling library"       "$LIBSWSCALE_VERSION"    "$LIBM"
6924 pkgconfig_generate libswresample "FFmpeg audio resampling library"      "$LIBSWRESAMPLE_VERSION" "$LIBM $LIBSOXR"