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:$PATH
  58
  59 show_help(){
  60     cat <<EOF
  61 Usage: configure [options]
  62 Options: [defaults in brackets after descriptions]
  63
  64 Help options:
  65   --help                   print this message
  66   --quiet                  Suppress showing informative output
  67   --list-decoders          show all available decoders
  68   --list-encoders          show all available encoders
  69   --list-hwaccels          show all available hardware accelerators
  70   --list-demuxers          show all available demuxers
  71   --list-muxers            show all available muxers
  72   --list-parsers           show all available parsers
  73   --list-protocols         show all available protocols
  74   --list-bsfs              show all available bitstream filters
  75   --list-indevs            show all available input devices
  76   --list-outdevs           show all available output devices
  77   --list-filters           show all available filters
  78
  79 Standard options:
  80   --logfile=FILE           log tests and output to FILE [ffbuild/config.log]
  81   --disable-logging        do not log configure debug information
  82   --fatal-warnings         fail if any configure warning is generated
  83   --prefix=PREFIX          install in PREFIX [$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   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
 444                            in the name) of tests whose result is ignored
 445
 446 NOTE: Object files are built at the place where configure is launched.
 447 EOF
 448   exit 0
 449 }
 450
 451 quotes='""'
 452 if test -t 1 && which tput >/dev/null 2>&1; then
 453     ncolors=$(tput colors)
 454     if test -n "$ncolors" && test $ncolors -ge 8; then
 455         bold_color=$(tput bold)
 456         warn_color=$(tput setaf 3)
 457         error_color=$(tput setaf 1)
 458         reset_color=$(tput sgr0)
 459     fi
 460     # 72 used instead of 80 since that's the default of pr
 461     ncols=$(tput cols)
 462 fi
 463 : ${ncols:=72}
 464
 465 log(){
 466     echo "$@" >> $logfile
 467 }
 468
 469 log_file(){
 470     log BEGIN $1
 471     pr -n -t $1 >> $logfile
 472     log END $1
 473 }
 474
 475 warn(){
 476     log "WARNING: $*"
 477     WARNINGS="${WARNINGS}WARNING: $*\n"
 478 }
 479
 480 die(){
 481     log "$@"
 482     echo "$error_color$bold_color$@$reset_color"
 483     cat <<EOF
 484
 485 If you think configure made a mistake, make sure you are using the latest
 486 version from Git.  If the latest version fails, report the problem to the
 487 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 488 EOF
 489     if disabled logging; then
 490         cat <<EOF
 491 Rerun configure with logging enabled (do not use --disable-logging), and
 492 include the log this produces with your report.
 493 EOF
 494     else
 495         cat <<EOF
 496 Include the log file "$logfile" produced by configure as this will help
 497 solve the problem.
 498 EOF
 499     fi
 500     exit 1
 501 }
 502
 503 # Avoid locale weirdness, besides we really just want to translate ASCII.
 504 toupper(){
 505     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 506 }
 507
 508 tolower(){
 509     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 510 }
 511
 512 c_escape(){
 513     echo "$*" | sed 's/["\\]/\\\0/g'
 514 }
 515
 516 sh_quote(){
 517     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 518     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 519     echo "$v"
 520 }
 521
 522 cleanws(){
 523     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 524 }
 525
 526 filter(){
 527     pat=$1
 528     shift
 529     for v; do
 530         eval "case $v in $pat) printf '%s ' $v ;; esac"
 531     done
 532 }
 533
 534 filter_out(){
 535     pat=$1
 536     shift
 537     for v; do
 538         eval "case $v in $pat) ;; *) printf '%s ' $v ;; esac"
 539     done
 540 }
 541
 542 map(){
 543     m=$1
 544     shift
 545     for v; do eval $m; done
 546 }
 547
 548 add_suffix(){
 549     suffix=$1
 550     shift
 551     for v; do echo ${v}${suffix}; done
 552 }
 553
 554 set_all(){
 555     value=$1
 556     shift
 557     for var in $*; do
 558         eval $var=$value
 559     done
 560 }
 561
 562 set_weak(){
 563     value=$1
 564     shift
 565     for var; do
 566         eval : \${$var:=$value}
 567     done
 568 }
 569
 570 sanitize_var_name(){
 571     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 572 }
 573
 574 set_safe(){
 575     var=$1
 576     shift
 577     eval $(sanitize_var_name "$var")='$*'
 578 }
 579
 580 get_safe(){
 581     eval echo \$$(sanitize_var_name "$1")
 582 }
 583
 584 pushvar(){
 585     for pvar in $*; do
 586         eval level=\${${pvar}_level:=0}
 587         eval ${pvar}_${level}="\$$pvar"
 588         eval ${pvar}_level=$(($level+1))
 589     done
 590 }
 591
 592 popvar(){
 593     for pvar in $*; do
 594         eval level=\${${pvar}_level:-0}
 595         test $level = 0 && continue
 596         eval level=$(($level-1))
 597         eval $pvar="\${${pvar}_${level}}"
 598         eval ${pvar}_level=$level
 599         eval unset ${pvar}_${level}
 600     done
 601 }
 602
 603 request(){
 604     for var in $*; do
 605         eval ${var}_requested=yes
 606         eval $var=
 607     done
 608 }
 609
 610 enable(){
 611     set_all yes $*
 612 }
 613
 614 disable(){
 615     set_all no $*
 616 }
 617
 618 enable_weak(){
 619     set_weak yes $*
 620 }
 621
 622 disable_weak(){
 623     set_weak no $*
 624 }
 625
 626 enable_safe(){
 627     for var; do
 628         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 629     done
 630 }
 631
 632 disable_safe(){
 633     for var; do
 634         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 635     done
 636 }
 637
 638 do_enable_deep(){
 639     for var; do
 640         enabled $var && continue
 641         eval sel="\$${var}_select"
 642         eval sgs="\$${var}_suggest"
 643         pushvar var sgs
 644         enable_deep $sel
 645         popvar sgs
 646         enable_deep_weak $sgs
 647         popvar var
 648     done
 649 }
 650
 651 enable_deep(){
 652     do_enable_deep $*
 653     enable $*
 654 }
 655
 656 enable_deep_weak(){
 657     for var; do
 658         disabled $var && continue
 659         pushvar var
 660         do_enable_deep $var
 661         popvar var
 662         enable_weak $var
 663     done
 664 }
 665
 666 requested(){
 667     test "${1#!}" = "$1" && op='=' || op=!=
 668     eval test "x\$${1#!}_requested" $op "xyes"
 669 }
 670
 671 enabled(){
 672     test "${1#!}" = "$1" && op='=' || op=!=
 673     eval test "x\$${1#!}" $op "xyes"
 674 }
 675
 676 disabled(){
 677     test "${1#!}" = "$1" && op='=' || op=!=
 678     eval test "x\$${1#!}" $op "xno"
 679 }
 680
 681 enabled_all(){
 682     for opt; do
 683         enabled $opt || return 1
 684     done
 685 }
 686
 687 disabled_all(){
 688     for opt; do
 689         disabled $opt || return 1
 690     done
 691 }
 692
 693 enabled_any(){
 694     for opt; do
 695         enabled $opt && return 0
 696     done
 697 }
 698
 699 disabled_any(){
 700     for opt; do
 701         disabled $opt && return 0
 702     done
 703     return 1
 704 }
 705
 706 set_default(){
 707     for opt; do
 708         eval : \${$opt:=\$${opt}_default}
 709     done
 710 }
 711
 712 is_in(){
 713     value=$1
 714     shift
 715     for var in $*; do
 716         [ $var = $value ] && return 0
 717     done
 718     return 1
 719 }
 720
 721 do_check_deps(){
 722     for cfg; do
 723         cfg="${cfg#!}"
 724         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 725         disabled ${cfg}_checking && continue
 726         enable ${cfg}_checking
 727         append allopts $cfg
 728
 729         eval dep_all="\$${cfg}_deps"
 730         eval dep_any="\$${cfg}_deps_any"
 731         eval dep_sel="\$${cfg}_select"
 732         eval dep_sgs="\$${cfg}_suggest"
 733         eval dep_ifa="\$${cfg}_if"
 734         eval dep_ifn="\$${cfg}_if_any"
 735
 736         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 737         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
 738         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 739
 740         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 741         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 742         enabled_all  $dep_all || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not all dependencies are satisfied: $dep_all"; }
 743         enabled_any  $dep_any || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not any dependency is satisfied: $dep_any"; }
 744         disabled_any $dep_sel && { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some selected dependency is unsatisfied: $dep_sel"; }
 745
 746         if enabled $cfg; then
 747             enable_deep $dep_sel
 748             enable_deep_weak $dep_sgs
 749         fi
 750
 751         disable ${cfg}_checking
 752     done
 753 }
 754
 755 check_deps(){
 756     unset allopts
 757
 758     do_check_deps "$@"
 759
 760     for cfg in $allopts; do
 761         enabled $cfg || continue
 762         eval dep_extralibs="\$${cfg}_extralibs"
 763         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
 764     done
 765 }
 766
 767 print_config(){
 768     pfx=$1
 769     files=$2
 770     shift 2
 771     map 'eval echo "$v \${$v:-no}"' "$@" |
 772     awk "BEGIN { split(\"$files\", files) }
 773         {
 774             c = \"$pfx\" toupper(\$1);
 775             v = \$2;
 776             sub(/yes/, 1, v);
 777             sub(/no/,  0, v);
 778             for (f in files) {
 779                 file = files[f];
 780                 if (file ~ /\\.h\$/) {
 781                     printf(\"#define %s %d\\n\", c, v) >>file;
 782                 } else if (file ~ /\\.asm\$/) {
 783                     printf(\"%%define %s %d\\n\", c, v) >>file;
 784                 } else if (file ~ /\\.mak\$/) {
 785                     n = -v ? \"\" : \"!\";
 786                     printf(\"%s%s=yes\\n\", n, c) >>file;
 787                 } else if (file ~ /\\.texi\$/) {
 788                     pre = -v ? \"\" : \"@c \";
 789                     yesno = \$2;
 790                     c2 = tolower(c);
 791                     gsub(/_/, \"-\", c2);
 792                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 793                 }
 794             }
 795         }"
 796 }
 797
 798 print_enabled(){
 799     suf=$1
 800     shift
 801     for v; do
 802         enabled $v && printf "%s\n" ${v%$suf}
 803     done
 804 }
 805
 806 append(){
 807     var=$1
 808     shift
 809     eval "$var=\"\$$var $*\""
 810 }
 811
 812 prepend(){
 813     var=$1
 814     shift
 815     eval "$var=\"$* \$$var\""
 816 }
 817
 818 unique(){
 819     var=$1
 820     uniq_list=""
 821     for tok in $(eval echo \$$var); do
 822         uniq_list="$(filter_out $tok $uniq_list) $tok"
 823     done
 824     eval "$var=\"${uniq_list}\""
 825 }
 826
 827 add_cppflags(){
 828     append CPPFLAGS "$@"
 829 }
 830
 831 add_cflags(){
 832     append CFLAGS $($cflags_filter "$@")
 833 }
 834
 835 add_cflags_headers(){
 836     append CFLAGS_HEADERS $($cflags_filter "$@")
 837 }
 838
 839 add_cxxflags(){
 840     append CXXFLAGS $($cflags_filter "$@")
 841 }
 842
 843 add_asflags(){
 844     append ASFLAGS $($asflags_filter "$@")
 845 }
 846
 847 add_objcflags(){
 848     append OBJCFLAGS $($objcflags_filter "$@")
 849 }
 850
 851 add_ldflags(){
 852     append LDFLAGS $($ldflags_filter "$@")
 853 }
 854
 855 add_ldexeflags(){
 856     append LDEXEFLAGS $($ldflags_filter "$@")
 857 }
 858
 859 add_ldlibflags(){
 860     append LDLIBFLAGS $($ldflags_filter "$@")
 861 }
 862
 863 add_stripflags(){
 864     append ASMSTRIPFLAGS "$@"
 865 }
 866
 867 add_extralibs(){
 868     prepend extralibs $($ldflags_filter "$@")
 869 }
 870
 871 add_host_cppflags(){
 872     append host_cppflags "$@"
 873 }
 874
 875 add_host_cflags(){
 876     append host_cflags $($host_cflags_filter "$@")
 877 }
 878
 879 add_host_ldflags(){
 880     append host_ldflags $($host_ldflags_filter "$@")
 881 }
 882
 883 add_compat(){
 884     append compat_objs $1
 885     shift
 886     map 'add_cppflags -D$v' "$@"
 887 }
 888
 889 check_cmd(){
 890     log "$@"
 891     "$@" >> $logfile 2>&1
 892 }
 893
 894 check_stat(){
 895     log check_stat "$@"
 896     stat "$1" >> $logfile 2>&1
 897 }
 898
 899 cc_o(){
 900     eval printf '%s\\n' $CC_O
 901 }
 902
 903 cc_e(){
 904     eval printf '%s\\n' $CC_E
 905 }
 906
 907 check_cc(){
 908     log check_cc "$@"
 909     cat > $TMPC
 910     log_file $TMPC
 911     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 912 }
 913
 914 check_cxx(){
 915     log check_cxx "$@"
 916     cat > $TMPCPP
 917     log_file $TMPCPP
 918     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 919 }
 920
 921 check_objcc(){
 922     log check_objcc "$@"
 923     cat > $TMPM
 924     log_file $TMPM
 925     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
 926 }
 927
 928 check_cpp(){
 929     log check_cpp "$@"
 930     cat > $TMPC
 931     log_file $TMPC
 932     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 933 }
 934
 935 as_o(){
 936     eval printf '%s\\n' $AS_O
 937 }
 938
 939 check_as(){
 940     log check_as "$@"
 941     cat > $TMPS
 942     log_file $TMPS
 943     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 944 }
 945
 946 check_inline_asm(){
 947     log check_inline_asm "$@"
 948     name="$1"
 949     code="$2"
 950     shift 2
 951     disable $name
 952     check_cc "$@" <<EOF && enable $name
 953 void foo(void){ __asm__ volatile($code); }
 954 EOF
 955 }
 956
 957 check_inline_asm_flags(){
 958     log check_inline_asm_flags "$@"
 959     name="$1"
 960     code="$2"
 961     flags=''
 962     shift 2
 963     while [ "$1" != "" ]; do
 964       append flags $1
 965       shift
 966     done;
 967     disable $name
 968     cat > $TMPC <<EOF
 969 void foo(void){ __asm__ volatile($code); }
 970 EOF
 971     log_file $TMPC
 972     check_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
 973     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
 974 }
 975
 976 check_insn(){
 977     log check_insn "$@"
 978     check_inline_asm ${1}_inline "\"$2\""
 979     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 980 }
 981
 982 check_yasm(){
 983     log check_yasm "$@"
 984     echo "$1" > $TMPS
 985     log_file $TMPS
 986     shift 1
 987     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
 988 }
 989
 990 ld_o(){
 991     eval printf '%s\\n' $LD_O
 992 }
 993
 994 check_ld(){
 995     log check_ld "$@"
 996     type=$1
 997     shift 1
 998     flags=$(filter_out '-l*|*.so' $@)
 999     libs=$(filter '-l*|*.so' $@)
1000     check_$type $($cflags_filter $flags) || return
1001     flags=$($ldflags_filter $flags)
1002     libs=$($ldflags_filter $libs)
1003     check_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1004 }
1005
1006 print_include(){
1007     hdr=$1
1008     test "${hdr%.h}" = "${hdr}" &&
1009         echo "#include $hdr"    ||
1010         echo "#include <$hdr>"
1011 }
1012
1013 check_code(){
1014     log check_code "$@"
1015     check=$1
1016     headers=$2
1017     code=$3
1018     shift 3
1019     {
1020         for hdr in $headers; do
1021             print_include $hdr
1022         done
1023         echo "int main(void) { $code; return 0; }"
1024     } | check_$check "$@"
1025 }
1026
1027 check_cppflags(){
1028     log check_cppflags "$@"
1029     check_cpp "$@" <<EOF && append CPPFLAGS "$@"
1030 int x;
1031 EOF
1032 }
1033
1034 test_cflags(){
1035     log test_cflags "$@"
1036     set -- $($cflags_filter "$@")
1037     check_cc "$@" <<EOF
1038 int x;
1039 EOF
1040 }
1041
1042 check_cflags(){
1043     log check_cflags "$@"
1044     test_cflags "$@" && add_cflags "$@"
1045 }
1046
1047 check_cxxflags(){
1048     log check_cxxflags "$@"
1049     set -- $($cflags_filter "$@")
1050     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
1051 int x;
1052 EOF
1053 }
1054
1055 test_objcflags(){
1056     log test_objcflags "$@"
1057     set -- $($objcflags_filter "$@")
1058     check_objcc "$@" <<EOF
1059 int x;
1060 EOF
1061 }
1062
1063 check_objcflags(){
1064     log check_objcflags "$@"
1065     test_objcflags "$@" && add_objcflags "$@"
1066 }
1067
1068 test_ldflags(){
1069     log test_ldflags "$@"
1070     check_ld "cc" "$@" <<EOF
1071 int main(void){ return 0; }
1072 EOF
1073 }
1074
1075 check_ldflags(){
1076     log check_ldflags "$@"
1077     test_ldflags "$@" && add_ldflags "$@"
1078 }
1079
1080 test_stripflags(){
1081     log test_stripflags "$@"
1082     # call check_cc to get a fresh TMPO
1083     check_cc <<EOF
1084 int main(void) { return 0; }
1085 EOF
1086     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1087 }
1088
1089 check_stripflags(){
1090     log check_stripflags "$@"
1091     test_stripflags "$@" && add_stripflags "$@"
1092 }
1093
1094 check_header(){
1095     log check_header "$@"
1096     header=$1
1097     shift
1098     disable_safe $header
1099     check_cpp "$@" <<EOF && enable_safe $header
1100 #include <$header>
1101 int x;
1102 EOF
1103 }
1104
1105 check_header_objcc(){
1106     log check_header_objcc "$@"
1107     rm -f -- "$TMPO"
1108     header=$1
1109     shift
1110     disable_safe $header
1111     {
1112        echo "#include <$header>"
1113        echo "int main(void) { return 0; }"
1114     } | check_objcc && check_stat "$TMPO" && enable_safe $headers
1115 }
1116
1117 check_func(){
1118     log check_func "$@"
1119     func=$1
1120     shift
1121     disable $func
1122     check_ld "cc" "$@" <<EOF && enable $func
1123 extern int $func();
1124 int main(void){ $func(); }
1125 EOF
1126 }
1127
1128 check_complexfunc(){
1129     log check_complexfunc "$@"
1130     func=$1
1131     narg=$2
1132     shift 2
1133     test $narg = 2 && args="f, g" || args="f * I"
1134     disable $func
1135     check_ld "cc" "$@" <<EOF && enable $func
1136 #include <complex.h>
1137 #include <math.h>
1138 float foo(complex float f, complex float g) { return $func($args); }
1139 int main(void){ return (int) foo; }
1140 EOF
1141 }
1142
1143 check_mathfunc(){
1144     log check_mathfunc "$@"
1145     func=$1
1146     narg=$2
1147     shift 2
1148     test $narg = 2 && args="f, g" || args="f"
1149     disable $func
1150     check_ld "cc" "$@" <<EOF && enable $func
1151 #include <math.h>
1152 float foo(float f, float g) { return $func($args); }
1153 int main(void){ return (int) foo; }
1154 EOF
1155 }
1156
1157 check_func_headers(){
1158     log check_func_headers "$@"
1159     headers=$1
1160     funcs=$2
1161     shift 2
1162     {
1163         for hdr in $headers; do
1164             print_include $hdr
1165         done
1166         echo "#include <stdint.h>"
1167         for func in $funcs; do
1168             echo "long check_$func(void) { return (long) $func; }"
1169         done
1170         echo "int main(void) { int ret = 0;"
1171         # LTO could optimize out the test functions without this
1172         for func in $funcs; do
1173             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1174         done
1175         echo "return ret; }"
1176     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1177 }
1178
1179 check_class_headers_cpp(){
1180     log check_class_headers_cpp "$@"
1181     headers=$1
1182     classes=$2
1183     shift 2
1184     {
1185         for hdr in $headers; do
1186             echo "#include <$hdr>"
1187         done
1188         echo "int main(void) { "
1189         i=1
1190         for class in $classes; do
1191             echo "$class obj$i;"
1192             i=$(expr $i + 1)
1193         done
1194         echo "return 0; }"
1195     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1196 }
1197
1198 check_cpp_condition(){
1199     log check_cpp_condition "$@"
1200     header=$1
1201     condition=$2
1202     shift 2
1203     check_cpp "$@" <<EOF
1204 #include <$header>
1205 #if !($condition)
1206 #error "unsatisfied condition: $condition"
1207 #endif
1208 EOF
1209 }
1210
1211 test_cflags_cc(){
1212     log test_cflags_cc "$@"
1213     flags=$1
1214     header=$2
1215     condition=$3
1216     shift 3
1217     set -- $($cflags_filter "$flags")
1218     check_cc "$@" <<EOF
1219 #include <$header>
1220 #if !($condition)
1221 #error "unsatisfied condition: $condition"
1222 #endif
1223 EOF
1224 }
1225
1226 check_lib(){
1227     log check_lib "$@"
1228     name="$1"
1229     headers="$2"
1230     funcs="$3"
1231     shift 3
1232     disable $name
1233     check_func_headers "$headers" "$funcs" "$@" &&
1234         enable $name && add_extralibs "$@"
1235 }
1236
1237 check_lib_cpp(){
1238     log check_lib_cpp "$@"
1239     headers="$1"
1240     classes="$2"
1241     shift 2
1242     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1243 }
1244
1245 check_pkg_config(){
1246     log check_pkg_config "$@"
1247     pkg_version="$1"
1248     pkg="${1%% *}"
1249     headers="$2"
1250     funcs="$3"
1251     shift 3
1252     check_cmd $pkg_config --exists --print-errors $pkg_version || return
1253     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1254     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1255     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1256         set_safe "${pkg}_cflags"    $pkg_cflags &&
1257         set_safe "${pkg}_extralibs" $pkg_libs
1258 }
1259
1260 check_exec(){
1261     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1262 }
1263
1264 check_exec_crash(){
1265     log check_exec_crash "$@"
1266     code=$(cat)
1267
1268     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1269     # are safe but may not be available everywhere.  Thus we use
1270     # raise(SIGTERM) instead.  The check is run in a subshell so we
1271     # can redirect the "Terminated" message from the shell.  SIGBUS
1272     # is not defined by standard C so it is used conditionally.
1273
1274     (check_exec "$@") >> $logfile 2>&1 <<EOF
1275 #include <signal.h>
1276 static void sighandler(int sig){
1277     raise(SIGTERM);
1278 }
1279 int foo(void){
1280     $code
1281 }
1282 int (*func_ptr)(void) = foo;
1283 int main(void){
1284     signal(SIGILL, sighandler);
1285     signal(SIGFPE, sighandler);
1286     signal(SIGSEGV, sighandler);
1287 #ifdef SIGBUS
1288     signal(SIGBUS, sighandler);
1289 #endif
1290     return func_ptr();
1291 }
1292 EOF
1293 }
1294
1295 check_type(){
1296     log check_type "$@"
1297     headers=$1
1298     type=$2
1299     shift 2
1300     disable_safe "$type"
1301     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1302 }
1303
1304 check_struct(){
1305     log check_struct "$@"
1306     headers=$1
1307     struct=$2
1308     member=$3
1309     shift 3
1310     disable_safe "${struct}_${member}"
1311     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1312         enable_safe "${struct}_${member}"
1313 }
1314
1315 check_builtin(){
1316     log check_builtin "$@"
1317     name=$1
1318     headers=$2
1319     builtin=$3
1320     shift 3
1321     disable "$name"
1322     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1323 }
1324
1325 check_compile_assert(){
1326     log check_compile_assert "$@"
1327     name=$1
1328     headers=$2
1329     condition=$3
1330     shift 3
1331     disable "$name"
1332     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1333 }
1334
1335 require(){
1336     log require "$@"
1337     name_version="$1"
1338     name="${1%% *}"
1339     headers="$2"
1340     func="$3"
1341     shift 3
1342     check_lib $name "$headers" $func "$@" || die "ERROR: $name_version not found"
1343 }
1344
1345 require_cpp(){
1346     name="$1"
1347     headers="$2"
1348     classes="$3"
1349     shift 3
1350     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1351 }
1352
1353 use_pkg_config(){
1354     log use_pkg_config "$@"
1355     pkg="$1"
1356     check_pkg_config "$@" || return 1
1357     add_cflags    $(get_safe "${pkg}_cflags")
1358     add_extralibs $(get_safe "${pkg}_extralibs")
1359 }
1360
1361 require_pkg_config(){
1362     use_pkg_config "$@" || die "ERROR: $pkg not found using pkg-config$pkg_config_fail_message"
1363 }
1364
1365 hostcc_e(){
1366     eval printf '%s\\n' $HOSTCC_E
1367 }
1368
1369 hostcc_o(){
1370     eval printf '%s\\n' $HOSTCC_O
1371 }
1372
1373 check_host_cc(){
1374     log check_host_cc "$@"
1375     cat > $TMPC
1376     log_file $TMPC
1377     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1378 }
1379
1380 check_host_cpp(){
1381     log check_host_cpp "$@"
1382     cat > $TMPC
1383     log_file $TMPC
1384     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1385 }
1386
1387 check_host_cppflags(){
1388     log check_host_cppflags "$@"
1389     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1390 int x;
1391 EOF
1392 }
1393
1394 check_host_cflags(){
1395     log check_host_cflags "$@"
1396     set -- $($host_cflags_filter "$@")
1397     check_host_cc "$@" <<EOF && append host_cflags "$@"
1398 int x;
1399 EOF
1400 }
1401
1402 check_host_cpp_condition(){
1403     log check_host_cpp_condition "$@"
1404     header=$1
1405     condition=$2
1406     shift 2
1407     check_host_cpp "$@" <<EOF
1408 #include <$header>
1409 #if !($condition)
1410 #error "unsatisfied condition: $condition"
1411 #endif
1412 EOF
1413 }
1414
1415 cp_if_changed(){
1416     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1417     mkdir -p "$(dirname $2)"
1418     cp -f "$1" "$2"
1419 }
1420
1421 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1422 # system-dependent things.
1423
1424 AVCODEC_COMPONENTS="
1425     bsfs
1426     decoders
1427     encoders
1428     hwaccels
1429     parsers
1430 "
1431
1432 AVDEVICE_COMPONENTS="
1433     indevs
1434     outdevs
1435 "
1436 AVFILTER_COMPONENTS="
1437     filters
1438 "
1439 AVFORMAT_COMPONENTS="
1440     demuxers
1441     muxers
1442     protocols
1443 "
1444
1445 AVRESAMPLE_COMPONENTS=""
1446 AVUTIL_COMPONENTS=""
1447
1448 COMPONENT_LIST="
1449     $AVCODEC_COMPONENTS
1450     $AVDEVICE_COMPONENTS
1451     $AVFILTER_COMPONENTS
1452     $AVFORMAT_COMPONENTS
1453     $AVRESAMPLE_COMPONENTS
1454     $AVUTIL_COMPONENTS
1455 "
1456
1457 EXAMPLE_LIST="
1458     avio_dir_cmd_example
1459     avio_reading_example
1460     decode_audio_example
1461     decode_video_example
1462     demuxing_decoding_example
1463     encode_audio_example
1464     encode_video_example
1465     extract_mvs_example
1466     filter_audio_example
1467     filtering_audio_example
1468     filtering_video_example
1469     http_multiclient_example
1470     metadata_example
1471     muxing_example
1472     qsvdec_example
1473     remuxing_example
1474     resampling_audio_example
1475     scaling_video_example
1476     transcode_aac_example
1477     transcoding_example
1478 "
1479 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1480     bzlib
1481     iconv
1482     libxcb
1483     libxcb_shm
1484     libxcb_shape
1485     libxcb_xfixes
1486     lzma
1487     schannel
1488     sdl
1489     sdl2
1490     securetransport
1491     xlib
1492     zlib
1493 "
1494
1495 EXTERNAL_LIBRARY_GPL_LIST="
1496     avisynth
1497     frei0r
1498     libcdio
1499     librubberband
1500     libvidstab
1501     libx264
1502     libx265
1503     libxavs
1504     libxvid
1505 "
1506
1507 EXTERNAL_LIBRARY_NONFREE_LIST="
1508     decklink
1509     libfdk_aac
1510     openssl
1511 "
1512
1513 EXTERNAL_LIBRARY_VERSION3_LIST="
1514     gmp
1515     libopencore_amrnb
1516     libopencore_amrwb
1517     libvo_amrwbenc
1518 "
1519
1520 EXTERNAL_LIBRARY_GPLV3_LIST="
1521     libsmbclient
1522 "
1523
1524 EXTERNAL_LIBRARY_LIST="
1525     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1526     $EXTERNAL_LIBRARY_GPL_LIST
1527     $EXTERNAL_LIBRARY_NONFREE_LIST
1528     $EXTERNAL_LIBRARY_VERSION3_LIST
1529     $EXTERNAL_LIBRARY_GPLV3_LIST
1530     chromaprint
1531     crystalhd
1532     gcrypt
1533     gnutls
1534     jni
1535     ladspa
1536     libass
1537     libbluray
1538     libbs2b
1539     libcaca
1540     libcelt
1541     libdc1394
1542     libflite
1543     libfontconfig
1544     libfreetype
1545     libfribidi
1546     libgme
1547     libgsm
1548     libiec61883
1549     libilbc
1550     libkvazaar
1551     libmodplug
1552     libmp3lame
1553     libnut
1554     libopencv
1555     libopenh264
1556     libopenjpeg
1557     libopenmpt
1558     libopus
1559     libpulse
1560     librtmp
1561     libschroedinger
1562     libshine
1563     libsmbclient
1564     libsnappy
1565     libsoxr
1566     libspeex
1567     libssh
1568     libtesseract
1569     libtheora
1570     libtwolame
1571     libv4l2
1572     libvorbis
1573     libvpx
1574     libwavpack
1575     libwebp
1576     libzimg
1577     libzmq
1578     libzvbi
1579     mediacodec
1580     netcdf
1581     openal
1582     opencl
1583     opengl
1584     videotoolbox
1585 "
1586 HWACCEL_AUTODETECT_LIBRARY_LIST="
1587     audiotoolbox
1588     cuda
1589     cuvid
1590     d3d11va
1591     dxva2
1592     nvenc
1593     vaapi
1594     vda
1595     vdpau
1596     videotoolbox_hwaccel
1597     xvmc
1598 "
1599
1600 HWACCEL_LIBRARY_NONFREE_LIST="
1601     libnpp
1602 "
1603
1604 HWACCEL_LIBRARY_LIST="
1605     $HWACCEL_AUTODETECT_LIBRARY_LIST
1606     $HWACCEL_LIBRARY_NONFREE_LIST
1607     libmfx
1608     mmal
1609     omx
1610 "
1611
1612 DOCUMENT_LIST="
1613     doc
1614     htmlpages
1615     manpages
1616     podpages
1617     txtpages
1618 "
1619
1620 FEATURE_LIST="
1621     ftrapv
1622     gray
1623     hardcoded_tables
1624     omx_rpi
1625     runtime_cpudetect
1626     safe_bitstream_reader
1627     shared
1628     small
1629     static
1630     swscale_alpha
1631 "
1632
1633 LIBRARY_LIST="
1634     avcodec
1635     avdevice
1636     avfilter
1637     avformat
1638     avresample
1639     avutil
1640     postproc
1641     swresample
1642     swscale
1643 "
1644
1645 LICENSE_LIST="
1646     gpl
1647     nonfree
1648     version3
1649 "
1650
1651 PROGRAM_LIST="
1652     ffplay
1653     ffprobe
1654     ffserver
1655     ffmpeg
1656 "
1657
1658 SUBSYSTEM_LIST="
1659     dct
1660     dwt
1661     error_resilience
1662     faan
1663     fast_unaligned
1664     fft
1665     lsp
1666     lzo
1667     mdct
1668     pixelutils
1669     network
1670     rdft
1671 "
1672
1673 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1674 CONFIG_LIST="
1675     $DOCUMENT_LIST
1676     $EXAMPLE_LIST
1677     $EXTERNAL_LIBRARY_LIST
1678     $HWACCEL_LIBRARY_LIST
1679     $FEATURE_LIST
1680     $LICENSE_LIST
1681     $LIBRARY_LIST
1682     $PROGRAM_LIST
1683     $SUBSYSTEM_LIST
1684     fontconfig
1685     memory_poisoning
1686     neon_clobber_test
1687     ossfuzz
1688     pic
1689     raise_major
1690     thumb
1691     valgrind_backtrace
1692     xmm_clobber_test
1693     $COMPONENT_LIST
1694 "
1695
1696 THREADS_LIST="
1697     pthreads
1698     os2threads
1699     w32threads
1700 "
1701
1702 ATOMICS_LIST="
1703     atomics_gcc
1704     atomics_suncc
1705     atomics_win32
1706 "
1707
1708 AUTODETECT_LIBS="
1709     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1710     $HWACCEL_AUTODETECT_LIBRARY_LIST
1711     $THREADS_LIST
1712 "
1713
1714 ARCH_LIST="
1715     aarch64
1716     alpha
1717     arm
1718     avr32
1719     avr32_ap
1720     avr32_uc
1721     bfin
1722     ia64
1723     m68k
1724     mips
1725     mips64
1726     parisc
1727     ppc
1728     ppc64
1729     s390
1730     sh4
1731     sparc
1732     sparc64
1733     tilegx
1734     tilepro
1735     tomi
1736     x86
1737     x86_32
1738     x86_64
1739 "
1740
1741 ARCH_EXT_LIST_ARM="
1742     armv5te
1743     armv6
1744     armv6t2
1745     armv8
1746     neon
1747     vfp
1748     vfpv3
1749     setend
1750 "
1751
1752 ARCH_EXT_LIST_MIPS="
1753     mipsfpu
1754     mips32r2
1755     mips32r5
1756     mips64r2
1757     mips32r6
1758     mips64r6
1759     mipsdsp
1760     mipsdspr2
1761     msa
1762 "
1763
1764 ARCH_EXT_LIST_LOONGSON="
1765     loongson2
1766     loongson3
1767     mmi
1768 "
1769
1770 ARCH_EXT_LIST_X86_SIMD="
1771     aesni
1772     amd3dnow
1773     amd3dnowext
1774     avx
1775     avx2
1776     fma3
1777     fma4
1778     mmx
1779     mmxext
1780     sse
1781     sse2
1782     sse3
1783     sse4
1784     sse42
1785     ssse3
1786     xop
1787 "
1788
1789 ARCH_EXT_LIST_PPC="
1790     altivec
1791     dcbzl
1792     ldbrx
1793     power8
1794     ppc4xx
1795     vsx
1796 "
1797
1798 ARCH_EXT_LIST_X86="
1799     $ARCH_EXT_LIST_X86_SIMD
1800     cpunop
1801     i686
1802 "
1803
1804 ARCH_EXT_LIST="
1805     $ARCH_EXT_LIST_ARM
1806     $ARCH_EXT_LIST_PPC
1807     $ARCH_EXT_LIST_X86
1808     $ARCH_EXT_LIST_MIPS
1809     $ARCH_EXT_LIST_LOONGSON
1810 "
1811
1812 ARCH_FEATURES="
1813     aligned_stack
1814     fast_64bit
1815     fast_clz
1816     fast_cmov
1817     local_aligned_8
1818     local_aligned_16
1819     local_aligned_32
1820     simd_align_16
1821     simd_align_32
1822 "
1823
1824 BUILTIN_LIST="
1825     atomic_cas_ptr
1826     machine_rw_barrier
1827     MemoryBarrier
1828     mm_empty
1829     rdtsc
1830     sarestart
1831     sem_timedwait
1832     sync_val_compare_and_swap
1833 "
1834 HAVE_LIST_CMDLINE="
1835     inline_asm
1836     symver
1837     yasm
1838 "
1839
1840 HAVE_LIST_PUB="
1841     bigendian
1842     fast_unaligned
1843 "
1844
1845 HEADERS_LIST="
1846     alsa_asoundlib_h
1847     altivec_h
1848     arpa_inet_h
1849     asm_types_h
1850     cdio_paranoia_h
1851     cdio_paranoia_paranoia_h
1852     cuda_h
1853     d3d11_h
1854     dispatch_dispatch_h
1855     dev_bktr_ioctl_bt848_h
1856     dev_bktr_ioctl_meteor_h
1857     dev_ic_bt8xx_h
1858     dev_video_bktr_ioctl_bt848_h
1859     dev_video_meteor_ioctl_meteor_h
1860     direct_h
1861     dirent_h
1862     dlfcn_h
1863     dxva_h
1864     ES2_gl_h
1865     gsm_h
1866     io_h
1867     mach_mach_time_h
1868     machine_ioctl_bt848_h
1869     machine_ioctl_meteor_h
1870     malloc_h
1871     opencv2_core_core_c_h
1872     openjpeg_2_1_openjpeg_h
1873     openjpeg_2_0_openjpeg_h
1874     openjpeg_1_5_openjpeg_h
1875     OpenGL_gl3_h
1876     poll_h
1877     sndio_h
1878     soundcard_h
1879     stdatomic_h
1880     sys_mman_h
1881     sys_param_h
1882     sys_resource_h
1883     sys_select_h
1884     sys_soundcard_h
1885     sys_time_h
1886     sys_un_h
1887     sys_videoio_h
1888     termios_h
1889     udplite_h
1890     unistd_h
1891     valgrind_valgrind_h
1892     windows_h
1893     winsock2_h
1894 "
1895
1896 INTRINSICS_LIST="
1897     intrinsics_neon
1898 "
1899
1900 COMPLEX_FUNCS="
1901     cabs
1902     cexp
1903 "
1904
1905 MATH_FUNCS="
1906     atanf
1907     atan2f
1908     cbrt
1909     cbrtf
1910     copysign
1911     cosf
1912     erf
1913     exp2
1914     exp2f
1915     expf
1916     hypot
1917     isfinite
1918     isinf
1919     isnan
1920     ldexpf
1921     llrint
1922     llrintf
1923     log2
1924     log2f
1925     log10f
1926     lrint
1927     lrintf
1928     powf
1929     rint
1930     round
1931     roundf
1932     sinf
1933     trunc
1934     truncf
1935 "
1936
1937 SYSTEM_FUNCS="
1938     access
1939     aligned_malloc
1940     arc4random
1941     clock_gettime
1942     closesocket
1943     CommandLineToArgvW
1944     CoTaskMemFree
1945     CryptGenRandom
1946     dlopen
1947     fcntl
1948     flt_lim
1949     fork
1950     getaddrinfo
1951     gethrtime
1952     getopt
1953     GetProcessAffinityMask
1954     GetProcessMemoryInfo
1955     GetProcessTimes
1956     getrusage
1957     GetSystemTimeAsFileTime
1958     gettimeofday
1959     glob
1960     glXGetProcAddress
1961     gmtime_r
1962     inet_aton
1963     isatty
1964     jack_port_get_latency_range
1965     kbhit
1966     LoadLibrary
1967     localtime_r
1968     lstat
1969     lzo1x_999_compress
1970     mach_absolute_time
1971     MapViewOfFile
1972     memalign
1973     mkstemp
1974     mmap
1975     mprotect
1976     nanosleep
1977     PeekNamedPipe
1978     posix_memalign
1979     pthread_cancel
1980     sched_getaffinity
1981     SetConsoleTextAttribute
1982     SetConsoleCtrlHandler
1983     setmode
1984     setrlimit
1985     Sleep
1986     strerror_r
1987     sysconf
1988     sysctl
1989     usleep
1990     UTGetOSTypeFromString
1991     VirtualAlloc
1992     wglGetProcAddress
1993 "
1994
1995 TOOLCHAIN_FEATURES="
1996     as_dn_directive
1997     as_fpu_directive
1998     as_func
1999     as_object_arch
2000     asm_mod_q
2001     attribute_may_alias
2002     attribute_packed
2003     ebp_available
2004     ebx_available
2005     gnu_as
2006     gnu_windres
2007     ibm_asm
2008     inline_asm_direct_symbol_refs
2009     inline_asm_labels
2010     inline_asm_nonlocal_labels
2011     pragma_deprecated
2012     rsync_contimeout
2013     symver_asm_label
2014     symver_gnu_asm
2015     vfp_args
2016     xform_asm
2017     xmm_clobbers
2018 "
2019
2020 TYPES_LIST="
2021     CONDITION_VARIABLE_Ptr
2022     socklen_t
2023     struct_addrinfo
2024     struct_group_source_req
2025     struct_ip_mreq_source
2026     struct_ipv6_mreq
2027     struct_msghdr_msg_flags
2028     struct_pollfd
2029     struct_rusage_ru_maxrss
2030     struct_sctp_event_subscribe
2031     struct_sockaddr_in6
2032     struct_sockaddr_sa_len
2033     struct_sockaddr_storage
2034     struct_stat_st_mtim_tv_nsec
2035     struct_v4l2_frmivalenum_discrete
2036 "
2037
2038 HAVE_LIST="
2039     $ARCH_EXT_LIST
2040     $(add_suffix _external $ARCH_EXT_LIST)
2041     $(add_suffix _inline   $ARCH_EXT_LIST)
2042     $ARCH_FEATURES
2043     $ATOMICS_LIST
2044     $BUILTIN_LIST
2045     $COMPLEX_FUNCS
2046     $HAVE_LIST_CMDLINE
2047     $HAVE_LIST_PUB
2048     $HEADERS_LIST
2049     $INTRINSICS_LIST
2050     $MATH_FUNCS
2051     $SYSTEM_FUNCS
2052     $THREADS_LIST
2053     $TOOLCHAIN_FEATURES
2054     $TYPES_LIST
2055     alsa
2056     atomics_native
2057     dos_paths
2058     dxva2_lib
2059     dxva2api_cobj
2060     jack
2061     libc_msvcrt
2062     makeinfo
2063     makeinfo_html
2064     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2065     perl
2066     pod2man
2067     sdl2
2068     section_data_rel_ro
2069     sndio
2070     texi2html
2071     threads
2072     vaapi_drm
2073     vaapi_x11
2074     vdpau_x11
2075     winrt
2076 "
2077
2078 # options emitted with CONFIG_ prefix but not available on the command line
2079 CONFIG_EXTRA="
2080     aandcttables
2081     ac3dsp
2082     audio_frame_queue
2083     audiodsp
2084     blockdsp
2085     bswapdsp
2086     cabac
2087     dirac_parse
2088     dvprofile
2089     exif
2090     faandct
2091     faanidct
2092     fdctdsp
2093     flacdsp
2094     fmtconvert
2095     frame_thread_encoder
2096     g722dsp
2097     golomb
2098     gplv3
2099     h263dsp
2100     h264chroma
2101     h264dsp
2102     h264parse
2103     h264pred
2104     h264qpel
2105     hevcparse
2106     hpeldsp
2107     huffman
2108     huffyuvdsp
2109     huffyuvencdsp
2110     idctdsp
2111     iirfilter
2112     mdct15
2113     intrax8
2114     iso_media
2115     ividsp
2116     jpegtables
2117     lgplv3
2118     libx262
2119     llauddsp
2120     llviddsp
2121     llvidencdsp
2122     lpc
2123     lzf
2124     me_cmp
2125     mpeg_er
2126     mpegaudio
2127     mpegaudiodsp
2128     mpegaudioheader
2129     mpegvideo
2130     mpegvideoenc
2131     mss34dsp
2132     pixblockdsp
2133     qpeldsp
2134     qsv
2135     qsvdec
2136     qsvenc
2137     rangecoder
2138     riffdec
2139     riffenc
2140     rtpdec
2141     rtpenc_chain
2142     rv34dsp
2143     sinewin
2144     snappy
2145     srtp
2146     startcode
2147     texturedsp
2148     texturedspenc
2149     tpeldsp
2150     vaapi_encode
2151     vc1dsp
2152     videodsp
2153     vp3dsp
2154     vp56dsp
2155     vp8dsp
2156     vt_bt2020
2157     wma_freqs
2158     wmv2dsp
2159 "
2160
2161 CMDLINE_SELECT="
2162     $ARCH_EXT_LIST
2163     $CONFIG_LIST
2164     $HAVE_LIST_CMDLINE
2165     $THREADS_LIST
2166     asm
2167     cross_compile
2168     debug
2169     extra_warnings
2170     logging
2171     lto
2172     optimizations
2173     rpath
2174     stripping
2175 "
2176
2177 PATHS_LIST="
2178     bindir
2179     datadir
2180     docdir
2181     incdir
2182     libdir
2183     mandir
2184     pkgconfigdir
2185     prefix
2186     shlibdir
2187     install_name_dir
2188 "
2189
2190 CMDLINE_SET="
2191     $PATHS_LIST
2192     ar
2193     arch
2194     as
2195     assert_level
2196     build_suffix
2197     cc
2198     objcc
2199     cpu
2200     cross_prefix
2201     custom_allocator
2202     cxx
2203     dep_cc
2204     doxygen
2205     env
2206     extra_version
2207     gas
2208     host_cc
2209     host_cflags
2210     host_extralibs
2211     host_ld
2212     host_ldflags
2213     host_os
2214     ignore_tests
2215     install
2216     ld
2217     ln_s
2218     logfile
2219     malloc_prefix
2220     nm
2221     optflags
2222     pkg_config
2223     pkg_config_flags
2224     progs_suffix
2225     random_seed
2226     ranlib
2227     samples
2228     strip
2229     sws_max_filter_size
2230     sysinclude
2231     sysroot
2232     target_exec
2233     target_os
2234     target_path
2235     target_samples
2236     tempprefix
2237     toolchain
2238     valgrind
2239     yasmexe
2240 "
2241
2242 CMDLINE_APPEND="
2243     extra_cflags
2244     extra_cxxflags
2245     extra_objcflags
2246     host_cppflags
2247 "
2248
2249 # code dependency declarations
2250
2251 # architecture extensions
2252
2253 armv5te_deps="arm"
2254 armv6_deps="arm"
2255 armv6t2_deps="arm"
2256 armv8_deps="aarch64"
2257 neon_deps_any="aarch64 arm"
2258 intrinsics_neon_deps="neon"
2259 vfp_deps_any="aarch64 arm"
2260 vfpv3_deps="vfp"
2261 setend_deps="arm"
2262
2263 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2264
2265 loongson2_deps="mips"
2266 loongson3_deps="mips"
2267 mipsfpu_deps="mips"
2268 mipsdsp_deps="mips"
2269 mipsdspr2_deps="mips"
2270 mips32r2_deps="mips"
2271 mips32r5_deps="mips"
2272 mips32r6_deps="mips"
2273 mips64r2_deps="mips"
2274 mips64r6_deps="mips"
2275 msa_deps="mipsfpu"
2276 mmi_deps="mips"
2277
2278 altivec_deps="ppc"
2279 dcbzl_deps="ppc"
2280 ldbrx_deps="ppc"
2281 ppc4xx_deps="ppc"
2282 vsx_deps="altivec"
2283 power8_deps="vsx"
2284
2285 cpunop_deps="i686"
2286 x86_64_select="i686"
2287 x86_64_suggest="fast_cmov"
2288
2289 amd3dnow_deps="mmx"
2290 amd3dnowext_deps="amd3dnow"
2291 i686_deps="x86"
2292 mmx_deps="x86"
2293 mmxext_deps="mmx"
2294 sse_deps="mmxext"
2295 sse2_deps="sse"
2296 sse3_deps="sse2"
2297 ssse3_deps="sse3"
2298 sse4_deps="ssse3"
2299 sse42_deps="sse4"
2300 aesni_deps="sse42"
2301 avx_deps="sse42"
2302 xop_deps="avx"
2303 fma3_deps="avx"
2304 fma4_deps="avx"
2305 avx2_deps="avx"
2306
2307 mmx_external_deps="yasm"
2308 mmx_inline_deps="inline_asm"
2309 mmx_suggest="mmx_external mmx_inline"
2310
2311 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2312     eval dep=\$${ext}_deps
2313     eval ${ext}_external_deps='"${dep}_external"'
2314     eval ${ext}_inline_deps='"${dep}_inline"'
2315     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2316 done
2317
2318 aligned_stack_if_any="aarch64 ppc x86"
2319 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2320 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2321 fast_unaligned_if_any="aarch64 ppc x86"
2322 simd_align_16_if_any="altivec neon sse"
2323 simd_align_32_if_any="avx"
2324
2325 # system capabilities
2326 symver_if_any="symver_asm_label symver_gnu_asm"
2327 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
2328
2329 # threading support
2330 atomics_gcc_if="sync_val_compare_and_swap"
2331 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2332 atomics_win32_if="MemoryBarrier"
2333 atomics_native_if_any="$ATOMICS_LIST"
2334 w32threads_deps="atomics_native"
2335 threads_if_any="$THREADS_LIST"
2336
2337 # subsystems
2338 dct_select="rdft"
2339 dirac_parse_select="golomb"
2340 error_resilience_select="me_cmp"
2341 faandct_deps="faan fdctdsp"
2342 faanidct_deps="faan idctdsp"
2343 h264dsp_select="startcode"
2344 hevcparse_select="golomb"
2345 frame_thread_encoder_deps="encoders threads"
2346 intrax8_select="blockdsp idctdsp"
2347 mdct_select="fft"
2348 mdct15_select="fft"
2349 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2350 mpeg_er_select="error_resilience"
2351 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2352 mpegaudiodsp_select="dct"
2353 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2354 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2355 vc1dsp_select="h264chroma qpeldsp startcode"
2356 rdft_select="fft"
2357
2358 # decoders / encoders
2359 aac_decoder_select="mdct15 mdct sinewin"
2360 aac_fixed_decoder_select="mdct sinewin"
2361 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2362 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2363 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2364 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2365 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2366 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2367 adpcm_g722_decoder_select="g722dsp"
2368 adpcm_g722_encoder_select="g722dsp"
2369 aic_decoder_select="golomb idctdsp"
2370 alac_encoder_select="lpc"
2371 als_decoder_select="bswapdsp"
2372 amrnb_decoder_select="lsp"
2373 amrwb_decoder_select="lsp"
2374 amv_decoder_select="sp5x_decoder exif"
2375 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2376 ape_decoder_select="bswapdsp llauddsp"
2377 apng_decoder_select="zlib"
2378 apng_encoder_select="llvidencdsp zlib"
2379 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2380 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2381 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2382 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2383 atrac1_decoder_select="mdct sinewin"
2384 atrac3_decoder_select="mdct"
2385 atrac3p_decoder_select="mdct sinewin"
2386 avrn_decoder_select="exif jpegtables"
2387 bink_decoder_select="blockdsp hpeldsp"
2388 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2389 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2390 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2391 cllc_decoder_select="bswapdsp"
2392 comfortnoise_encoder_select="lpc"
2393 cook_decoder_select="audiodsp mdct sinewin"
2394 cscd_decoder_select="lzo"
2395 cscd_decoder_suggest="zlib"
2396 dca_decoder_select="mdct"
2397 dds_decoder_select="texturedsp"
2398 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2399 dnxhd_decoder_select="blockdsp idctdsp"
2400 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2401 dvvideo_decoder_select="dvprofile idctdsp"
2402 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2403 dxa_decoder_select="zlib"
2404 dxv_decoder_select="lzf texturedsp"
2405 eac3_decoder_select="ac3_decoder"
2406 eac3_encoder_select="ac3_encoder"
2407 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2408 eatgq_decoder_select="aandcttables"
2409 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2410 exr_decoder_select="zlib"
2411 ffv1_decoder_select="rangecoder"
2412 ffv1_encoder_select="rangecoder"
2413 ffvhuff_decoder_select="huffyuv_decoder"
2414 ffvhuff_encoder_select="huffyuv_encoder"
2415 fic_decoder_select="golomb"
2416 flac_decoder_select="flacdsp"
2417 flac_encoder_select="bswapdsp flacdsp lpc"
2418 flashsv2_decoder_select="zlib"
2419 flashsv2_encoder_select="zlib"
2420 flashsv_decoder_select="zlib"
2421 flashsv_encoder_select="zlib"
2422 flv_decoder_select="h263_decoder"
2423 flv_encoder_select="h263_encoder"
2424 fourxm_decoder_select="blockdsp bswapdsp"
2425 fraps_decoder_select="bswapdsp huffman"
2426 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2427 g729_decoder_select="audiodsp"
2428 h261_decoder_select="mpegvideo"
2429 h261_encoder_select="aandcttables mpegvideoenc"
2430 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2431 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2432 h263i_decoder_select="h263_decoder"
2433 h263p_decoder_select="h263_decoder"
2434 h263p_encoder_select="h263_encoder"
2435 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2436 h264_decoder_suggest="error_resilience"
2437 hap_decoder_select="snappy texturedsp"
2438 hap_encoder_deps="libsnappy"
2439 hap_encoder_select="texturedspenc"
2440 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2441 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2442 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2443 iac_decoder_select="imc_decoder"
2444 imc_decoder_select="bswapdsp fft mdct sinewin"
2445 indeo3_decoder_select="hpeldsp"
2446 indeo4_decoder_select="ividsp"
2447 indeo5_decoder_select="ividsp"
2448 interplay_video_decoder_select="hpeldsp"
2449 jpegls_decoder_select="mjpeg_decoder"
2450 jv_decoder_select="blockdsp"
2451 lagarith_decoder_select="llviddsp"
2452 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2453 magicyuv_decoder_select="llviddsp"
2454 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2455 metasound_decoder_select="lsp mdct sinewin"
2456 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2457 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2458 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2459 mjpegb_decoder_select="mjpeg_decoder"
2460 mlp_decoder_select="mlp_parser"
2461 motionpixels_decoder_select="bswapdsp"
2462 mp1_decoder_select="mpegaudio"
2463 mp1float_decoder_select="mpegaudio"
2464 mp2_decoder_select="mpegaudio"
2465 mp2float_decoder_select="mpegaudio"
2466 mp3_decoder_select="mpegaudio"
2467 mp3adu_decoder_select="mpegaudio"
2468 mp3adufloat_decoder_select="mpegaudio"
2469 mp3float_decoder_select="mpegaudio"
2470 mp3on4_decoder_select="mpegaudio"
2471 mp3on4float_decoder_select="mpegaudio"
2472 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2473 mpc8_decoder_select="mpegaudiodsp"
2474 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2475 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2476 mpegvideo_decoder_select="mpegvideo"
2477 mpeg1video_decoder_select="mpegvideo"
2478 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2479 mpeg2video_decoder_select="mpegvideo"
2480 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2481 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2482 mpeg4_encoder_select="h263_encoder"
2483 msa1_decoder_select="mss34dsp"
2484 mscc_decoder_select="zlib"
2485 msmpeg4v1_decoder_select="h263_decoder"
2486 msmpeg4v2_decoder_select="h263_decoder"
2487 msmpeg4v2_encoder_select="h263_encoder"
2488 msmpeg4v3_decoder_select="h263_decoder"
2489 msmpeg4v3_encoder_select="h263_encoder"
2490 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2491 mts2_decoder_select="mss34dsp"
2492 mxpeg_decoder_select="mjpeg_decoder"
2493 nellymoser_decoder_select="mdct sinewin"
2494 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2495 nuv_decoder_select="idctdsp lzo"
2496 on2avc_decoder_select="mdct"
2497 opus_decoder_deps="swresample"
2498 opus_decoder_select="mdct15"
2499 opus_encoder_select="audio_frame_queue mdct15"
2500 png_decoder_select="zlib"
2501 png_encoder_select="llvidencdsp zlib"
2502 prores_decoder_select="blockdsp idctdsp"
2503 prores_encoder_select="fdctdsp"
2504 qcelp_decoder_select="lsp"
2505 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2506 ra_144_decoder_select="audiodsp"
2507 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2508 ralf_decoder_select="golomb"
2509 rawvideo_decoder_select="bswapdsp"
2510 rscc_decoder_select="zlib"
2511 rtjpeg_decoder_select="me_cmp"
2512 rv10_decoder_select="h263_decoder"
2513 rv10_encoder_select="h263_encoder"
2514 rv20_decoder_select="h263_decoder"
2515 rv20_encoder_select="h263_encoder"
2516 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2517 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2518 screenpresso_decoder_select="zlib"
2519 shorten_decoder_select="bswapdsp"
2520 sipr_decoder_select="lsp"
2521 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2522 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2523 sonic_decoder_select="golomb rangecoder"
2524 sonic_encoder_select="golomb rangecoder"
2525 sonic_ls_encoder_select="golomb rangecoder"
2526 sp5x_decoder_select="mjpeg_decoder"
2527 srgc_decoder_select="zlib"
2528 svq1_decoder_select="hpeldsp"
2529 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2530 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2531 svq3_decoder_suggest="zlib"
2532 tak_decoder_select="audiodsp"
2533 tdsc_decoder_select="zlib mjpeg_decoder"
2534 theora_decoder_select="vp3_decoder"
2535 thp_decoder_select="mjpeg_decoder"
2536 tiff_decoder_suggest="zlib lzma"
2537 tiff_encoder_suggest="zlib"
2538 truehd_decoder_select="mlp_parser"
2539 truemotion2_decoder_select="bswapdsp"
2540 truespeech_decoder_select="bswapdsp"
2541 tscc_decoder_select="zlib"
2542 twinvq_decoder_select="mdct lsp sinewin"
2543 txd_decoder_select="texturedsp"
2544 utvideo_decoder_select="bswapdsp llviddsp"
2545 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2546 vble_decoder_select="llviddsp"
2547 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2548 vc1_qsv_decoder_deps="libmfx"
2549 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2550 vc1image_decoder_select="vc1_decoder"
2551 vorbis_decoder_select="mdct"
2552 vorbis_encoder_select="mdct"
2553 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2554 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2555 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2556 vp6a_decoder_select="vp6_decoder"
2557 vp6f_decoder_select="vp6_decoder"
2558 vp7_decoder_select="h264pred videodsp vp8dsp"
2559 vp8_decoder_select="h264pred videodsp vp8dsp"
2560 vp9_decoder_select="videodsp vp9_parser"
2561 webp_decoder_select="vp8_decoder exif"
2562 wmalossless_decoder_select="llauddsp"
2563 wmapro_decoder_select="mdct sinewin wma_freqs"
2564 wmav1_decoder_select="mdct sinewin wma_freqs"
2565 wmav1_encoder_select="mdct sinewin wma_freqs"
2566 wmav2_decoder_select="mdct sinewin wma_freqs"
2567 wmav2_encoder_select="mdct sinewin wma_freqs"
2568 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2569 wmv1_decoder_select="h263_decoder"
2570 wmv1_encoder_select="h263_encoder"
2571 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2572 wmv2_encoder_select="h263_encoder wmv2dsp"
2573 wmv3_decoder_select="vc1_decoder"
2574 wmv3image_decoder_select="wmv3_decoder"
2575 xma1_decoder_select="wmapro_decoder"
2576 xma2_decoder_select="wmapro_decoder"
2577 zerocodec_decoder_select="zlib"
2578 zlib_decoder_select="zlib"
2579 zlib_encoder_select="zlib"
2580 zmbv_decoder_select="zlib"
2581 zmbv_encoder_select="zlib"
2582
2583 # platform codecs
2584 audiotoolbox_deps="AudioToolbox_AudioToolbox_h"
2585 audiotoolbox_extralibs="-framework CoreFoundation -framework AudioToolbox -framework CoreMedia"
2586
2587 # hardware accelerators
2588 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2589 cuda_deps_any="dlopen LoadLibrary"
2590 cuvid_deps="cuda"
2591 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2592 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2593 dxva2_extralibs="-luser32"
2594 dxva2_lib_deps="dxva2"
2595 vda_framework_deps="VideoDecodeAcceleration_VDADecoder_h"
2596 vda_framework_extralibs="-framework VideoDecodeAcceleration"
2597 vda_deps="vda_framework pthreads"
2598 vda_extralibs="-framework CoreFoundation -framework QuartzCore"
2599 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2600 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2601 xvmc_deps="X11_extensions_XvMClib_h"
2602
2603 h263_vaapi_hwaccel_deps="vaapi"
2604 h263_vaapi_hwaccel_select="h263_decoder"
2605 h263_videotoolbox_hwaccel_deps="videotoolbox"
2606 h263_videotoolbox_hwaccel_select="h263_decoder"
2607 h264_cuvid_hwaccel_deps="cuda cuvid"
2608 h264_cuvid_hwaccel_select="h264_cuvid_decoder"
2609 h264_d3d11va_hwaccel_deps="d3d11va"
2610 h264_d3d11va_hwaccel_select="h264_decoder"
2611 h264_dxva2_hwaccel_deps="dxva2"
2612 h264_dxva2_hwaccel_select="h264_decoder"
2613 h264_mediacodec_hwaccel_deps="mediacodec"
2614 h264_mmal_hwaccel_deps="mmal"
2615 h264_qsv_hwaccel_deps="libmfx"
2616 h264_vaapi_hwaccel_deps="vaapi"
2617 h264_vaapi_hwaccel_select="h264_decoder"
2618 h264_vda_hwaccel_deps="vda"
2619 h264_vda_hwaccel_select="h264_decoder"
2620 h264_vda_old_hwaccel_deps="vda"
2621 h264_vda_old_hwaccel_select="h264_decoder"
2622 h264_vdpau_hwaccel_deps="vdpau"
2623 h264_vdpau_hwaccel_select="h264_decoder"
2624 h264_videotoolbox_hwaccel_deps="videotoolbox"
2625 h264_videotoolbox_hwaccel_select="h264_decoder"
2626 hevc_cuvid_hwaccel_deps="cuda cuvid"
2627 hevc_cuvid_hwaccel_select="hevc_cuvid_decoder"
2628 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2629 hevc_d3d11va_hwaccel_select="hevc_decoder"
2630 hevc_mediacodec_hwaccel_deps="mediacodec"
2631 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2632 hevc_dxva2_hwaccel_select="hevc_decoder"
2633 hevc_qsv_hwaccel_deps="libmfx"
2634 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2635 hevc_vaapi_hwaccel_select="hevc_decoder"
2636 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2637 hevc_vdpau_hwaccel_select="hevc_decoder"
2638 mjpeg_cuvid_hwaccel_deps="cuda cuvid"
2639 mjpeg_cuvid_hwaccel_select="mjpeg_cuvid_decoder"
2640 mpeg_xvmc_hwaccel_deps="xvmc"
2641 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2642 mpeg1_cuvid_hwaccel_deps="cuda cuvid"
2643 mpeg1_cuvid_hwaccel_select="mpeg1_cuvid_decoder"
2644 mpeg1_vdpau_hwaccel_deps="vdpau"
2645 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2646 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2647 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2648 mpeg1_xvmc_hwaccel_deps="xvmc"
2649 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2650 mpeg2_cuvid_hwaccel_deps="cuda cuvid"
2651 mpeg2_cuvid_hwaccel_select="mpeg2_cuvid_decoder"
2652 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2653 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2654 mpeg2_dxva2_hwaccel_deps="dxva2"
2655 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2656 mpeg2_mmal_hwaccel_deps="mmal"
2657 mpeg2_qsv_hwaccel_deps="libmfx"
2658 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2659 mpeg2_vaapi_hwaccel_deps="vaapi"
2660 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2661 mpeg2_vdpau_hwaccel_deps="vdpau"
2662 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2663 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2664 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2665 mpeg2_xvmc_hwaccel_deps="xvmc"
2666 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2667 mpeg4_cuvid_hwaccel_deps="cuda cuvid"
2668 mpeg4_cuvid_hwaccel_select="mpeg4_cuvid_decoder"
2669 mpeg4_mediacodec_hwaccel_deps="mediacodec"
2670 mpeg4_mmal_hwaccel_deps="mmal"
2671 mpeg4_vaapi_hwaccel_deps="vaapi"
2672 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2673 mpeg4_vdpau_hwaccel_deps="vdpau"
2674 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2675 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2676 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2677 vc1_cuvid_hwaccel_deps="cuda cuvid"
2678 vc1_cuvid_hwaccel_select="vc1_cuvid_decoder"
2679 vc1_d3d11va_hwaccel_deps="d3d11va"
2680 vc1_d3d11va_hwaccel_select="vc1_decoder"
2681 vc1_dxva2_hwaccel_deps="dxva2"
2682 vc1_dxva2_hwaccel_select="vc1_decoder"
2683 vc1_mmal_hwaccel_deps="mmal"
2684 vc1_qsv_hwaccel_deps="libmfx"
2685 vc1_qsv_hwaccel_select="qsvdec_vc1"
2686 vc1_vaapi_hwaccel_deps="vaapi"
2687 vc1_vaapi_hwaccel_select="vc1_decoder"
2688 vc1_vdpau_hwaccel_deps="vdpau"
2689 vc1_vdpau_hwaccel_select="vc1_decoder"
2690 vp8_cuvid_hwaccel_deps="cuda cuvid"
2691 vp8_cuvid_hwaccel_select="vp8_cuvid_decoder"
2692 vp9_cuvid_hwaccel_deps="cuda cuvid"
2693 vp9_cuvid_hwaccel_select="vp9_cuvid_decoder"
2694 vp8_mediacodec_hwaccel_deps="mediacodec"
2695 vp8_qsv_hwaccel_deps="libmfx"
2696 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2697 vp9_d3d11va_hwaccel_select="vp9_decoder"
2698 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2699 vp9_dxva2_hwaccel_select="vp9_decoder"
2700 vp9_mediacodec_hwaccel_deps="mediacodec"
2701 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2702 vp9_vaapi_hwaccel_select="vp9_decoder"
2703 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2704 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2705 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2706 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2707
2708 # hardware-accelerated codecs
2709 omx_deps="dlopen pthreads"
2710 omx_extralibs='$ldl'
2711 omx_rpi_select="omx"
2712 qsvdec_select="qsv"
2713 qsvenc_select="qsv"
2714 vaapi_encode_deps="vaapi"
2715
2716 hwupload_cuda_filter_deps="cuda"
2717 scale_npp_filter_deps="cuda libnpp"
2718
2719 nvenc_deps="cuda"
2720 nvenc_deps_any="dlopen LoadLibrary"
2721 nvenc_encoder_deps="nvenc"
2722
2723 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2724 h264_cuvid_decoder_deps="cuda cuvid"
2725 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2726 h264_mediacodec_decoder_deps="mediacodec"
2727 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2728 h264_mmal_decoder_deps="mmal"
2729 h264_nvenc_encoder_deps="nvenc"
2730 h264_omx_encoder_deps="omx"
2731 h264_qsv_decoder_deps="libmfx"
2732 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2733 h264_qsv_encoder_deps="libmfx"
2734 h264_qsv_encoder_select="qsvenc"
2735 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2736 h264_vaapi_encoder_select="vaapi_encode golomb"
2737 h264_vda_decoder_deps="vda"
2738 h264_vda_decoder_select="h264_decoder"
2739 h264_vdpau_decoder_deps="vdpau"
2740 h264_vdpau_decoder_select="h264_decoder"
2741 hevc_cuvid_decoder_deps="cuda cuvid"
2742 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2743 hevc_mediacodec_decoder_deps="mediacodec"
2744 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2745 hevc_nvenc_encoder_deps="nvenc"
2746 hevc_qsv_decoder_deps="libmfx"
2747 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2748 hevc_qsv_encoder_deps="libmfx"
2749 hevc_qsv_encoder_select="hevcparse qsvenc"
2750 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2751 hevc_vaapi_encoder_select="vaapi_encode golomb"
2752 mjpeg_cuvid_decoder_deps="cuda cuvid"
2753 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2754 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2755 mpeg1_cuvid_decoder_deps="cuda cuvid"
2756 mpeg1_vdpau_decoder_deps="vdpau"
2757 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2758 mpeg2_crystalhd_decoder_select="crystalhd"
2759 mpeg2_cuvid_decoder_deps="cuda cuvid"
2760 mpeg2_mmal_decoder_deps="mmal"
2761 mpeg2_qsv_decoder_deps="libmfx"
2762 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2763 mpeg2_qsv_encoder_deps="libmfx"
2764 mpeg2_qsv_encoder_select="qsvenc"
2765 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2766 mpeg2_vaapi_encoder_select="vaapi_encode"
2767 mpeg4_crystalhd_decoder_select="crystalhd"
2768 mpeg4_cuvid_decoder_deps="cuda cuvid"
2769 mpeg4_mediacodec_decoder_deps="mediacodec"
2770 mpeg4_mmal_decoder_deps="mmal"
2771 mpeg4_omx_encoder_deps="omx"
2772 mpeg4_vdpau_decoder_deps="vdpau"
2773 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2774 mpeg_vdpau_decoder_deps="vdpau"
2775 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2776 msmpeg4_crystalhd_decoder_select="crystalhd"
2777 nvenc_h264_encoder_select="h264_nvenc_encoder"
2778 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2779 vc1_crystalhd_decoder_select="crystalhd"
2780 vc1_cuvid_decoder_deps="cuda cuvid"
2781 vc1_mmal_decoder_deps="mmal"
2782 vc1_vdpau_decoder_deps="vdpau"
2783 vc1_vdpau_decoder_select="vc1_decoder"
2784 vp8_cuvid_decoder_deps="cuda cuvid"
2785 vp8_mediacodec_decoder_deps="mediacodec"
2786 vp8_qsv_decoder_deps="libmfx"
2787 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2788 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2789 vp8_vaapi_encoder_select="vaapi_encode"
2790 vp9_cuvid_decoder_deps="cuda cuvid"
2791 vp9_mediacodec_decoder_deps="mediacodec"
2792 wmv3_crystalhd_decoder_select="crystalhd"
2793 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2794
2795 # parsers
2796 h264_parser_select="golomb h264dsp h264parse"
2797 hevc_parser_select="hevcparse"
2798 mpegaudio_parser_select="mpegaudioheader"
2799 mpegvideo_parser_select="mpegvideo"
2800 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2801 vc1_parser_select="vc1dsp"
2802
2803 # bitstream_filters
2804 mjpeg2jpeg_bsf_select="jpegtables"
2805
2806 # external libraries
2807 aac_at_decoder_deps="audiotoolbox"
2808 ac3_at_decoder_deps="audiotoolbox"
2809 ac3_at_decoder_select="ac3_parser"
2810 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2811 alac_at_decoder_deps="audiotoolbox"
2812 amr_nb_at_decoder_deps="audiotoolbox"
2813 avisynth_deps_any="dlopen LoadLibrary"
2814 avisynth_demuxer_deps="avisynth"
2815 avisynth_demuxer_select="riffdec"
2816 eac3_at_decoder_deps="audiotoolbox"
2817 eac3_at_decoder_select="ac3_parser"
2818 gsm_ms_at_decoder_deps="audiotoolbox"
2819 ilbc_at_decoder_deps="audiotoolbox"
2820 mp1_at_decoder_deps="audiotoolbox"
2821 mp2_at_decoder_deps="audiotoolbox"
2822 mp3_at_decoder_deps="audiotoolbox"
2823 mp1_at_decoder_select="mpegaudioheader"
2824 mp2_at_decoder_select="mpegaudioheader"
2825 mp3_at_decoder_select="mpegaudioheader"
2826 pcm_alaw_at_decoder_deps="audiotoolbox"
2827 pcm_mulaw_at_decoder_deps="audiotoolbox"
2828 qdmc_at_decoder_deps="audiotoolbox"
2829 qdm2_at_decoder_deps="audiotoolbox"
2830 aac_at_encoder_deps="audiotoolbox"
2831 aac_at_encoder_select="audio_frame_queue"
2832 alac_at_encoder_deps="audiotoolbox"
2833 alac_at_encoder_select="audio_frame_queue"
2834 ilbc_at_encoder_deps="audiotoolbox"
2835 ilbc_at_encoder_select="audio_frame_queue"
2836 pcm_alaw_at_encoder_deps="audiotoolbox"
2837 pcm_alaw_at_encoder_select="audio_frame_queue"
2838 pcm_mulaw_at_encoder_deps="audiotoolbox"
2839 pcm_mulaw_at_encoder_select="audio_frame_queue"
2840 chromaprint_muxer_deps="chromaprint"
2841 h264_videotoolbox_encoder_deps="videotoolbox_encoder pthreads"
2842 libcelt_decoder_deps="libcelt"
2843 libfdk_aac_decoder_deps="libfdk_aac"
2844 libfdk_aac_encoder_deps="libfdk_aac"
2845 libfdk_aac_encoder_select="audio_frame_queue"
2846 libgme_demuxer_deps="libgme"
2847 libgsm_decoder_deps="libgsm"
2848 libgsm_encoder_deps="libgsm"
2849 libgsm_ms_decoder_deps="libgsm"
2850 libgsm_ms_encoder_deps="libgsm"
2851 libilbc_decoder_deps="libilbc"
2852 libilbc_encoder_deps="libilbc"
2853 libkvazaar_encoder_deps="libkvazaar"
2854 libmodplug_demuxer_deps="libmodplug"
2855 libmp3lame_encoder_deps="libmp3lame"
2856 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2857 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2858 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2859 libopencore_amrnb_encoder_select="audio_frame_queue"
2860 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2861 libopenh264_decoder_deps="libopenh264"
2862 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2863 libopenh264_encoder_deps="libopenh264"
2864 libopenjpeg_decoder_deps="libopenjpeg"
2865 libopenjpeg_encoder_deps="libopenjpeg"
2866 libopenmpt_demuxer_deps="libopenmpt"
2867 libopus_decoder_deps="libopus"
2868 libopus_encoder_deps="libopus"
2869 libopus_encoder_select="audio_frame_queue"
2870 libschroedinger_decoder_deps="libschroedinger"
2871 libschroedinger_encoder_deps="libschroedinger"
2872 libshine_encoder_deps="libshine"
2873 libshine_encoder_select="audio_frame_queue"
2874 libspeex_decoder_deps="libspeex"
2875 libspeex_encoder_deps="libspeex"
2876 libspeex_encoder_select="audio_frame_queue"
2877 libtheora_encoder_deps="libtheora"
2878 libtwolame_encoder_deps="libtwolame"
2879 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2880 libvorbis_decoder_deps="libvorbis"
2881 libvorbis_encoder_deps="libvorbis"
2882 libvorbis_encoder_select="audio_frame_queue"
2883 libvpx_vp8_decoder_deps="libvpx"
2884 libvpx_vp8_encoder_deps="libvpx"
2885 libvpx_vp9_decoder_deps="libvpx"
2886 libvpx_vp9_encoder_deps="libvpx"
2887 libwavpack_encoder_deps="libwavpack"
2888 libwavpack_encoder_select="audio_frame_queue"
2889 libwebp_encoder_deps="libwebp"
2890 libwebp_anim_encoder_deps="libwebp"
2891 libx262_encoder_deps="libx262"
2892 libx264_encoder_deps="libx264"
2893 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2894 libx264rgb_encoder_select="libx264_encoder"
2895 libx265_encoder_deps="libx265"
2896 libxavs_encoder_deps="libxavs"
2897 libxvid_encoder_deps="libxvid"
2898 libzvbi_teletext_decoder_deps="libzvbi"
2899 videotoolbox_deps="VideoToolbox_VideoToolbox_h"
2900 videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework CoreVideo"
2901 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2902 videotoolbox_encoder_suggest="vda_framework vt_bt2020"
2903 vt_bt2020_deps="kCVImageBufferColorPrimaries_ITU_R_2020"
2904
2905 # demuxers / muxers
2906 ac3_demuxer_select="ac3_parser"
2907 aiff_muxer_select="iso_media"
2908 asf_demuxer_select="riffdec"
2909 asf_o_demuxer_select="riffdec"
2910 asf_muxer_select="riffenc"
2911 asf_stream_muxer_select="asf_muxer"
2912 avi_demuxer_select="iso_media riffdec exif"
2913 avi_muxer_select="riffenc"
2914 caf_demuxer_select="iso_media riffdec"
2915 caf_muxer_select="iso_media"
2916 dash_muxer_select="mp4_muxer"
2917 dirac_demuxer_select="dirac_parser"
2918 dts_demuxer_select="dca_parser"
2919 dtshd_demuxer_select="dca_parser"
2920 dv_demuxer_select="dvprofile"
2921 dv_muxer_select="dvprofile"
2922 dxa_demuxer_select="riffdec"
2923 eac3_demuxer_select="ac3_parser"
2924 f4v_muxer_select="mov_muxer"
2925 fifo_muxer_deps="threads"
2926 flac_demuxer_select="flac_parser"
2927 hds_muxer_select="flv_muxer"
2928 hls_muxer_select="mpegts_muxer"
2929 image2_alias_pix_demuxer_select="image2_demuxer"
2930 image2_brender_pix_demuxer_select="image2_demuxer"
2931 ipod_muxer_select="mov_muxer"
2932 ismv_muxer_select="mov_muxer"
2933 libnut_demuxer_deps="libnut"
2934 libnut_muxer_deps="libnut"
2935 matroska_audio_muxer_select="matroska_muxer"
2936 matroska_demuxer_select="iso_media riffdec"
2937 matroska_demuxer_suggest="bzlib lzo zlib"
2938 matroska_muxer_select="iso_media riffenc"
2939 mmf_muxer_select="riffenc"
2940 mov_demuxer_select="iso_media riffdec"
2941 mov_demuxer_suggest="zlib"
2942 mov_muxer_select="iso_media riffenc rtpenc_chain"
2943 mp3_demuxer_select="mpegaudio_parser"
2944 mp3_muxer_select="mpegaudioheader"
2945 mp4_muxer_select="mov_muxer"
2946 mpegts_demuxer_select="iso_media"
2947 mpegts_muxer_select="adts_muxer latm_muxer"
2948 mpegtsraw_demuxer_select="mpegts_demuxer"
2949 mxf_d10_muxer_select="mxf_muxer"
2950 mxf_opatom_muxer_select="mxf_muxer"
2951 nut_muxer_select="riffenc"
2952 nuv_demuxer_select="riffdec"
2953 oga_muxer_select="ogg_muxer"
2954 ogg_demuxer_select="dirac_parse"
2955 ogv_muxer_select="ogg_muxer"
2956 opus_muxer_select="ogg_muxer"
2957 psp_muxer_select="mov_muxer"
2958 rtp_demuxer_select="sdp_demuxer"
2959 rtp_muxer_select="golomb"
2960 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2961 rtsp_demuxer_select="http_protocol rtpdec"
2962 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2963 sap_demuxer_select="sdp_demuxer"
2964 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2965 sdp_demuxer_select="rtpdec"
2966 smoothstreaming_muxer_select="ismv_muxer"
2967 spdif_muxer_select="aac_parser"
2968 spx_muxer_select="ogg_muxer"
2969 swf_demuxer_suggest="zlib"
2970 tak_demuxer_select="tak_parser"
2971 tg2_muxer_select="mov_muxer"
2972 tgp_muxer_select="mov_muxer"
2973 vobsub_demuxer_select="mpegps_demuxer"
2974 w64_demuxer_select="wav_demuxer"
2975 w64_muxer_select="wav_muxer"
2976 wav_demuxer_select="riffdec"
2977 wav_muxer_select="riffenc"
2978 webm_muxer_select="iso_media riffenc"
2979 webm_dash_manifest_demuxer_select="matroska_demuxer"
2980 wtv_demuxer_select="mpegts_demuxer riffdec"
2981 wtv_muxer_select="mpegts_muxer riffenc"
2982 xmv_demuxer_select="riffdec"
2983 xwma_demuxer_select="riffdec"
2984
2985 # indevs / outdevs
2986 alsa_indev_deps="alsa"
2987 alsa_outdev_deps="alsa"
2988 avfoundation_indev_deps="pthreads"
2989 avfoundation_indev_extralibs="-framework Foundation -framework AVFoundation -framework CoreVideo -framework CoreMedia"
2990 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2991 caca_outdev_deps="libcaca"
2992 decklink_indev_deps="decklink threads"
2993 decklink_indev_extralibs="-lstdc++"
2994 decklink_outdev_deps="decklink threads"
2995 decklink_outdev_extralibs="-lstdc++"
2996 dshow_indev_deps="IBaseFilter"
2997 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
2998 dv1394_indev_deps="dv1394"
2999 dv1394_indev_select="dv_demuxer"
3000 fbdev_indev_deps="linux_fb_h"
3001 fbdev_outdev_deps="linux_fb_h"
3002 gdigrab_indev_deps="CreateDIBSection"
3003 gdigrab_indev_extralibs="-lgdi32"
3004 gdigrab_indev_select="bmp_decoder"
3005 iec61883_indev_deps="libiec61883"
3006 jack_indev_deps="jack"
3007 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3008 lavfi_indev_deps="avfilter"
3009 libcdio_indev_deps="libcdio"
3010 libdc1394_indev_deps="libdc1394"
3011 libv4l2_indev_deps="libv4l2"
3012 openal_indev_deps="openal"
3013 opengl_outdev_deps="opengl"
3014 oss_indev_deps_any="soundcard_h sys_soundcard_h"
3015 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
3016 pulse_indev_deps="libpulse"
3017 pulse_outdev_deps="libpulse"
3018 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
3019 qtkit_indev_select="qtkit"
3020 sdl2_outdev_deps="sdl2"
3021 sndio_indev_deps="sndio"
3022 sndio_outdev_deps="sndio"
3023 v4l_indev_deps="linux_videodev_h"
3024 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3025 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3026 vfwcap_indev_deps="vfw32 vfwcap_defines"
3027 xcbgrab_indev_deps="libxcb"
3028 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3029 xv_outdev_extralibs="-lXv -lX11 -lXext"
3030
3031 # protocols
3032 async_protocol_deps="threads"
3033 bluray_protocol_deps="libbluray"
3034 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
3035 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3036 ffrtmpcrypt_protocol_select="tcp_protocol"
3037 ffrtmphttp_protocol_deps="!librtmp_protocol"
3038 ffrtmphttp_protocol_select="http_protocol"
3039 ftp_protocol_select="tcp_protocol"
3040 gopher_protocol_select="network"
3041 http_protocol_select="tcp_protocol"
3042 httpproxy_protocol_select="tcp_protocol"
3043 https_protocol_select="tls_protocol"
3044 icecast_protocol_select="http_protocol"
3045 librtmp_protocol_deps="librtmp"
3046 librtmpe_protocol_deps="librtmp"
3047 librtmps_protocol_deps="librtmp"
3048 librtmpt_protocol_deps="librtmp"
3049 librtmpte_protocol_deps="librtmp"
3050 libsmbclient_protocol_deps="libsmbclient gplv3"
3051 libssh_protocol_deps="libssh"
3052 mmsh_protocol_select="http_protocol"
3053 mmst_protocol_select="network"
3054 rtmp_protocol_deps="!librtmp_protocol"
3055 rtmp_protocol_select="tcp_protocol"
3056 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3057 rtmps_protocol_deps="!librtmp_protocol"
3058 rtmps_protocol_select="tls_protocol"
3059 rtmpt_protocol_select="ffrtmphttp_protocol"
3060 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3061 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3062 rtp_protocol_select="udp_protocol"
3063 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3064 sctp_protocol_select="network"
3065 srtp_protocol_select="rtp_protocol srtp"
3066 tcp_protocol_select="network"
3067 tls_gnutls_protocol_deps="gnutls !tls_schannel_protocol !tls_securetransport_protocol"
3068 tls_gnutls_protocol_select="tcp_protocol"
3069 tls_openssl_protocol_deps="openssl !tls_schannel_protocol !tls_securetransport_protocol !tls_gnutls_protocol"
3070 tls_openssl_protocol_select="tcp_protocol"
3071 tls_schannel_protocol_deps="schannel"
3072 tls_schannel_protocol_select="tcp_protocol"
3073 tls_securetransport_protocol_deps="securetransport"
3074 tls_securetransport_protocol_select="tcp_protocol"
3075 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
3076 udp_protocol_select="network"
3077 udplite_protocol_select="network"
3078 unix_protocol_deps="sys_un_h"
3079 unix_protocol_select="network"
3080
3081 # filters
3082 afftfilt_filter_deps="avcodec"
3083 afftfilt_filter_select="fft"
3084 amovie_filter_deps="avcodec avformat"
3085 aresample_filter_deps="swresample"
3086 ass_filter_deps="libass"
3087 atempo_filter_deps="avcodec"
3088 atempo_filter_select="rdft"
3089 azmq_filter_deps="libzmq"
3090 blackframe_filter_deps="gpl"
3091 boxblur_filter_deps="gpl"
3092 bs2b_filter_deps="libbs2b"
3093 colormatrix_filter_deps="gpl"
3094 cover_rect_filter_deps="avcodec avformat gpl"
3095 cropdetect_filter_deps="gpl"
3096 deinterlace_qsv_filter_deps="libmfx"
3097 deinterlace_vaapi_filter_deps="vaapi"
3098 delogo_filter_deps="gpl"
3099 deshake_filter_select="pixelutils"
3100 drawtext_filter_deps="libfreetype"
3101 eq_filter_deps="gpl"
3102 fftfilt_filter_deps="avcodec"
3103 fftfilt_filter_select="rdft"
3104 find_rect_filter_deps="avcodec avformat gpl"
3105 firequalizer_filter_deps="avcodec"
3106 firequalizer_filter_select="rdft"
3107 flite_filter_deps="libflite"
3108 framerate_filter_select="pixelutils"
3109 frei0r_filter_deps="frei0r dlopen"
3110 frei0r_src_filter_deps="frei0r dlopen"
3111 fspp_filter_deps="gpl"
3112 geq_filter_deps="gpl"
3113 histeq_filter_deps="gpl"
3114 hqdn3d_filter_deps="gpl"
3115 interlace_filter_deps="gpl"
3116 kerndeint_filter_deps="gpl"
3117 ladspa_filter_deps="ladspa dlopen"
3118 mcdeint_filter_deps="avcodec gpl"
3119 movie_filter_deps="avcodec avformat"
3120 mpdecimate_filter_deps="gpl"
3121 mpdecimate_filter_select="pixelutils"
3122 mptestsrc_filter_deps="gpl"
3123 negate_filter_deps="lut_filter"
3124 nnedi_filter_deps="gpl"
3125 ocr_filter_deps="libtesseract"
3126 ocv_filter_deps="libopencv"
3127 owdenoise_filter_deps="gpl"
3128 pan_filter_deps="swresample"
3129 perspective_filter_deps="gpl"
3130 phase_filter_deps="gpl"
3131 pp7_filter_deps="gpl"
3132 pp_filter_deps="gpl postproc"
3133 pullup_filter_deps="gpl"
3134 removelogo_filter_deps="avcodec avformat swscale"
3135 repeatfields_filter_deps="gpl"
3136 resample_filter_deps="avresample"
3137 rubberband_filter_deps="librubberband"
3138 sab_filter_deps="gpl swscale"
3139 scale2ref_filter_deps="swscale"
3140 scale_filter_deps="swscale"
3141 scale_qsv_filter_deps="libmfx"
3142 select_filter_select="pixelutils"
3143 showcqt_filter_deps="avcodec avformat swscale"
3144 showcqt_filter_select="fft"
3145 showfreqs_filter_deps="avcodec"
3146 showfreqs_filter_select="fft"
3147 showspectrum_filter_deps="avcodec"
3148 showspectrum_filter_select="fft"
3149 showspectrumpic_filter_deps="avcodec"
3150 showspectrumpic_filter_select="fft"
3151 signature_filter_deps="gpl avcodec avformat"
3152 smartblur_filter_deps="gpl swscale"
3153 sofalizer_filter_deps="netcdf avcodec"
3154 sofalizer_filter_select="fft"
3155 spectrumsynth_filter_deps="avcodec"
3156 spectrumsynth_filter_select="fft"
3157 spp_filter_deps="gpl avcodec"
3158 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3159 stereo3d_filter_deps="gpl"
3160 subtitles_filter_deps="avformat avcodec libass"
3161 super2xsai_filter_deps="gpl"
3162 pixfmts_super2xsai_test_deps="super2xsai_filter"
3163 tinterlace_filter_deps="gpl"
3164 tinterlace_merge_test_deps="tinterlace_filter"
3165 tinterlace_pad_test_deps="tinterlace_filter"
3166 uspp_filter_deps="gpl avcodec"
3167 vaguedenoiser_filter_deps="gpl"
3168 vidstabdetect_filter_deps="libvidstab"
3169 vidstabtransform_filter_deps="libvidstab"
3170 zmq_filter_deps="libzmq"
3171 zoompan_filter_deps="swscale"
3172 zscale_filter_deps="libzimg"
3173 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3174
3175 # examples
3176 avio_dir_cmd_deps="avformat avutil"
3177 avio_reading_deps="avformat avcodec avutil"
3178 decode_audio_example_deps="avcodec avutil"
3179 decode_video_example_deps="avcodec avutil"
3180 demuxing_decoding_example_deps="avcodec avformat avutil"
3181 encode_audio_example_deps="avcodec avutil"
3182 encode_video_example_deps="avcodec avutil"
3183 extract_mvs_example_deps="avcodec avformat avutil"
3184 filter_audio_example_deps="avfilter avutil"
3185 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3186 filtering_video_example_deps="avfilter avcodec avformat avutil"
3187 http_multiclient_example_deps="avformat avutil fork"
3188 metadata_example_deps="avformat avutil"
3189 muxing_example_deps="avcodec avformat avutil swscale"
3190 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3191 remuxing_example_deps="avcodec avformat avutil"
3192 resampling_audio_example_deps="avutil swresample"
3193 scaling_video_example_deps="avutil swscale"
3194 transcode_aac_example_deps="avcodec avformat swresample"
3195 transcoding_example_deps="avfilter avcodec avformat avutil"
3196
3197 # libraries, in linking order
3198 avcodec_deps="avutil"
3199 avcodec_select="null_bsf"
3200 avdevice_deps="avformat avcodec avutil"
3201 avfilter_deps="avutil"
3202 avformat_deps="avcodec avutil"
3203 avresample_deps="avutil"
3204 postproc_deps="avutil gpl"
3205 swresample_deps="avutil"
3206 swscale_deps="avutil"
3207
3208 # programs
3209 ffmpeg_deps="avcodec avfilter avformat swresample"
3210 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3211                null_filter
3212                trim_filter"
3213 ffplay_deps="avcodec avformat swscale swresample sdl2"
3214 ffplay_extralibs='$sdl2_extralibs'
3215 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3216 ffprobe_deps="avcodec avformat"
3217 ffserver_deps="avformat fork sarestart"
3218 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3219
3220 # documentation
3221 podpages_deps="perl"
3222 manpages_deps="perl pod2man"
3223 htmlpages_deps="perl"
3224 htmlpages_deps_any="makeinfo_html texi2html"
3225 txtpages_deps="perl makeinfo"
3226 doc_deps_any="manpages htmlpages podpages txtpages"
3227
3228 # default parameters
3229
3230 logfile="ffbuild/config.log"
3231
3232 # installation paths
3233 prefix_default="/usr/local"
3234 bindir_default='${prefix}/bin'
3235 datadir_default='${prefix}/share/ffmpeg'
3236 docdir_default='${prefix}/share/doc/ffmpeg'
3237 incdir_default='${prefix}/include'
3238 libdir_default='${prefix}/lib'
3239 mandir_default='${prefix}/share/man'
3240
3241 # toolchain
3242 ar_default="ar"
3243 cc_default="gcc"
3244 cxx_default="g++"
3245 host_cc_default="gcc"
3246 doxygen_default="doxygen"
3247 install="install"
3248 ln_s_default="ln -s -f"
3249 nm_default="nm -g"
3250 objformat="elf"
3251 pkg_config_default=pkg-config
3252 ranlib_default="ranlib"
3253 strip_default="strip"
3254 version_script='--version-script'
3255 yasmexe_default="yasm"
3256 windres_default="windres"
3257
3258 # OS
3259 target_os_default=$(tolower $(uname -s))
3260 host_os=$target_os_default
3261
3262 # machine
3263 if test "$target_os_default" = aix; then
3264     arch_default=$(uname -p)
3265     strip_default="strip -X32_64"
3266 else
3267     arch_default=$(uname -m)
3268 fi
3269 cpu="generic"
3270 intrinsics="none"
3271
3272 # configurable options
3273 enable $PROGRAM_LIST
3274 enable $DOCUMENT_LIST
3275 enable $EXAMPLE_LIST
3276 enable $(filter_out avresample $LIBRARY_LIST)
3277 enable stripping
3278
3279 enable asm
3280 enable debug
3281 enable doc
3282 enable faan faandct faanidct
3283 enable optimizations
3284 enable runtime_cpudetect
3285 enable safe_bitstream_reader
3286 enable static
3287 enable swscale_alpha
3288 enable valgrind_backtrace
3289
3290 sws_max_filter_size_default=256
3291 set_default sws_max_filter_size
3292
3293 # build settings
3294 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3295 LIBPREF="lib"
3296 LIBSUF=".a"
3297 FULLNAME='$(NAME)$(BUILDSUF)'
3298 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3299 SLIBPREF="lib"
3300 SLIBSUF=".so"
3301 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3302 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3303 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3304 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3305 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3306 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3307 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3308
3309 asflags_filter=echo
3310 cflags_filter=echo
3311 ldflags_filter=echo
3312
3313 AS_C='-c'
3314 AS_O='-o $@'
3315 CC_C='-c'
3316 CC_E='-E -o $@'
3317 CC_O='-o $@'
3318 CXX_C='-c'
3319 CXX_O='-o $@'
3320 OBJCC_C='-c'
3321 OBJCC_E='-E -o $@'
3322 OBJCC_O='-o $@'
3323 LD_O='-o $@'
3324 LD_LIB='-l%'
3325 LD_PATH='-L'
3326 HOSTCC_C='-c'
3327 HOSTCC_E='-E -o $@'
3328 HOSTCC_O='-o $@'
3329 HOSTLD_O='-o $@'
3330
3331 host_extralibs='-lm'
3332 host_cflags_filter=echo
3333 host_ldflags_filter=echo
3334
3335 target_path='$(CURDIR)'
3336
3337 # since the object filename is not given with the -MM flag, the compiler
3338 # is only able to print the basename, and we must add the path ourselves
3339 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3340 DEPFLAGS='-MM'
3341
3342 # find source path
3343 if test -f configure; then
3344     source_path=.
3345 else
3346     source_path=$(cd $(dirname "$0"); pwd)
3347     case "$source_path" in
3348         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3349     esac
3350     test -e "$source_path/config.h" &&
3351         die "Out of tree builds are impossible with config.h in source dir."
3352 fi
3353
3354 for v in "$@"; do
3355     r=${v#*=}
3356     l=${v%"$r"}
3357     r=$(sh_quote "$r")
3358     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3359 done
3360
3361 find_things(){
3362     thing=$1
3363     pattern=$2
3364     file=$source_path/$3
3365     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3366 }
3367
3368 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3369 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3370 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3371 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3372 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3373 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3374 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3375 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3376 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3377
3378 find_things_extern(){
3379     thing=$1
3380     pattern=$2
3381     file=$source_path/$3
3382     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3383 }
3384
3385 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3386 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3387
3388 ALL_COMPONENTS="
3389     $BSF_LIST
3390     $DECODER_LIST
3391     $DEMUXER_LIST
3392     $ENCODER_LIST
3393     $FILTER_LIST
3394     $HWACCEL_LIST
3395     $INDEV_LIST
3396     $MUXER_LIST
3397     $OUTDEV_LIST
3398     $PARSER_LIST
3399     $PROTOCOL_LIST
3400 "
3401
3402 for n in $COMPONENT_LIST; do
3403     v=$(toupper ${n%s})_LIST
3404     eval enable \$$v
3405     eval ${n}_if_any="\$$v"
3406 done
3407
3408 enable $ARCH_EXT_LIST
3409
3410 die_unknown(){
3411     echo "Unknown option \"$1\"."
3412     echo "See $0 --help for available options."
3413     exit 1
3414 }
3415
3416 print_in_columns() {
3417     cols=$(expr $ncols / 24)
3418     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3419 }
3420
3421 show_list() {
3422     suffix=_$1
3423     shift
3424     echo $* | sed s/$suffix//g | print_in_columns
3425     exit 0
3426 }
3427
3428 rand_list(){
3429     IFS=', '
3430     set -- $*
3431     unset IFS
3432     for thing; do
3433         comp=${thing%:*}
3434         prob=${thing#$comp}
3435         prob=${prob#:}
3436         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3437         echo "prob ${prob:-0.5}"
3438         printf '%s\n' $comp
3439     done
3440 }
3441
3442 do_random(){
3443     action=$1
3444     shift
3445     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3446     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3447 }
3448
3449 for opt do
3450     optval="${opt#*=}"
3451     case "$opt" in
3452         --extra-ldflags=*)
3453             add_ldflags $optval
3454         ;;
3455         --extra-ldexeflags=*)
3456             add_ldexeflags $optval
3457         ;;
3458         --extra-ldlibflags=*)
3459             add_ldlibflags $optval
3460         ;;
3461         --extra-libs=*)
3462             add_extralibs $optval
3463         ;;
3464         --disable-devices)
3465             disable $INDEV_LIST $OUTDEV_LIST
3466         ;;
3467         --enable-debug=*)
3468             debuglevel="$optval"
3469         ;;
3470         --disable-programs)
3471             disable $PROGRAM_LIST
3472         ;;
3473         --disable-everything)
3474             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3475         ;;
3476         --disable-all)
3477             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3478             disable $LIBRARY_LIST $PROGRAM_LIST doc
3479             enable avutil
3480         ;;
3481         --enable-random|--disable-random)
3482             action=${opt%%-random}
3483             do_random ${action#--} $COMPONENT_LIST
3484         ;;
3485         --enable-random=*|--disable-random=*)
3486             action=${opt%%-random=*}
3487             do_random ${action#--} $optval
3488         ;;
3489         --enable-*=*|--disable-*=*)
3490             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3491             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3492             eval list=\$$(toupper $thing)_LIST
3493             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3494             list=$(filter "$name" $list)
3495             [ "$list" = "" ] && warn "Option $opt did not match anything"
3496             $action $list
3497         ;;
3498         --enable-?*|--disable-?*)
3499             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3500             if is_in $option $COMPONENT_LIST; then
3501                 test $action = disable && action=unset
3502                 eval $action \$$(toupper ${option%s})_LIST
3503             elif is_in $option $CMDLINE_SELECT; then
3504                 $action $option
3505             else
3506                 die_unknown $opt
3507             fi
3508         ;;
3509         --list-*)
3510             NAME="${opt#--list-}"
3511             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3512             NAME=${NAME%s}
3513             eval show_list $NAME \$$(toupper $NAME)_LIST
3514         ;;
3515         --help|-h) show_help
3516         ;;
3517         --quiet|-q) quiet=yes
3518         ;;
3519         --fatal-warnings) enable fatal_warnings
3520         ;;
3521         --libfuzzer=*)
3522             libfuzzer_path="$optval"
3523         ;;
3524         *)
3525             optname="${opt%%=*}"
3526             optname="${optname#--}"
3527             optname=$(echo "$optname" | sed 's/-/_/g')
3528             if is_in $optname $CMDLINE_SET; then
3529                 eval $optname='$optval'
3530             elif is_in $optname $CMDLINE_APPEND; then
3531                 append $optname "$optval"
3532             else
3533                 die_unknown $opt
3534             fi
3535         ;;
3536     esac
3537 done
3538
3539 for e in $env; do
3540     eval "export $e"
3541 done
3542
3543 # Mark specifically enabled, but normally autodetected libraries as requested.
3544 for lib in $AUTODETECT_LIBS; do
3545     enabled $lib && request $lib
3546 done
3547
3548 # Enable platform codecs by default.
3549 enable_weak audiotoolbox
3550
3551 # Enable hwaccels by default.
3552 enable_weak d3d11va dxva2 vaapi vda vdpau videotoolbox_hwaccel xvmc
3553 enable_weak xlib
3554
3555 enable_weak cuda cuvid nvenc vda_framework videotoolbox videotoolbox_encoder
3556
3557 disabled logging && logfile=/dev/null
3558
3559 die_license_disabled() {
3560     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3561 }
3562
3563 die_license_disabled_gpl() {
3564     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3565 }
3566
3567 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3568 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3569
3570 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3571 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3572
3573 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3574
3575 # Disable all the library-specific components if the library itself
3576 # is disabled, see AVCODEC_LIST and following _LIST variables.
3577
3578 disable_components(){
3579     disabled ${1} && disable $(
3580         eval components="\$$(toupper ${1})_COMPONENTS"
3581         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3582     )
3583 }
3584
3585 map 'disable_components $v' $LIBRARY_LIST
3586
3587 mkdir -p ffbuild
3588 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3589 set >> $logfile
3590
3591 test -n "$valgrind" && toolchain="valgrind-memcheck"
3592
3593 enabled ossfuzz && {
3594     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
3595     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
3596 }
3597
3598 case "$toolchain" in
3599     *-asan)
3600         cc_default="${toolchain%-asan}"
3601         add_cflags  -fsanitize=address
3602         add_ldflags -fsanitize=address
3603     ;;
3604     *-msan)
3605         cc_default="${toolchain%-msan}"
3606         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3607         add_ldflags -fsanitize=memory
3608     ;;
3609     *-tsan)
3610         cc_default="${toolchain%-tsan}"
3611         add_cflags  -fsanitize=thread -fPIE
3612         add_ldflags -fsanitize=thread -pie
3613         case "$toolchain" in
3614             gcc-tsan)
3615                 add_cflags  -fPIC
3616                 add_ldflags -fPIC
3617                 ;;
3618         esac
3619     ;;
3620     *-usan)
3621         cc_default="${toolchain%-usan}"
3622         add_cflags  -fsanitize=undefined
3623         add_ldflags -fsanitize=undefined
3624     ;;
3625     valgrind-*)
3626         target_exec_default="valgrind"
3627         case "$toolchain" in
3628             valgrind-massif)
3629                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3630                 ;;
3631             valgrind-memcheck)
3632                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3633                 ;;
3634         esac
3635     ;;
3636     msvc)
3637         # Check whether the current MSVC version needs the C99 converter.
3638         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3639         # support enough of C99 to build ffmpeg. Default to the new
3640         # behaviour if the regexp was unable to match anything, since this
3641         # successfully parses the version number of existing supported
3642         # versions that require the converter (MSVC 2010 and 2012).
3643         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3644         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3645             cc_default="cl"
3646             cxx_default="cl"
3647         else
3648             cc_default="c99wrap cl"
3649             cxx_default="c99wrap cl"
3650         fi
3651         ld_default="$source_path/compat/windows/mslink"
3652         nm_default="dumpbin -symbols"
3653         ar_default="lib"
3654         case "$arch" in
3655         arm*)
3656             as_default="armasm"
3657             ;;
3658         esac
3659         target_os_default="win32"
3660         # Use a relative path for TMPDIR. This makes sure all the
3661         # ffconf temp files are written with a relative path, avoiding
3662         # issues with msys/win32 path conversion for MSVC parameters
3663         # such as -Fo<file> or -out:<file>.
3664         TMPDIR=.
3665     ;;
3666     icl)
3667         cc_default="icl"
3668         ld_default="xilink"
3669         nm_default="dumpbin -symbols"
3670         ar_default="xilib"
3671         target_os_default="win32"
3672         TMPDIR=.
3673     ;;
3674     gcov)
3675         add_cflags  -fprofile-arcs -ftest-coverage
3676         add_ldflags -fprofile-arcs -ftest-coverage
3677     ;;
3678     llvm-cov)
3679         add_cflags -fprofile-arcs -ftest-coverage
3680         add_ldflags --coverage
3681     ;;
3682     hardened)
3683         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3684         add_cflags   -fno-strict-overflow -fstack-protector-all
3685         add_ldflags  -Wl,-z,relro -Wl,-z,now
3686         add_cflags   -fPIE
3687         add_ldexeflags -fPIE -pie
3688     ;;
3689     ?*)
3690         die "Unknown toolchain $toolchain"
3691     ;;
3692 esac
3693
3694 test -n "$cross_prefix" && enable cross_compile
3695
3696 if enabled cross_compile; then
3697     test -n "$arch" && test -n "$target_os" ||
3698         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3699 fi
3700
3701 ar_default="${cross_prefix}${ar_default}"
3702 cc_default="${cross_prefix}${cc_default}"
3703 cxx_default="${cross_prefix}${cxx_default}"
3704 nm_default="${cross_prefix}${nm_default}"
3705 pkg_config_default="${cross_prefix}${pkg_config_default}"
3706 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3707     ranlib_default="${cross_prefix}${ranlib_default} -D"
3708 else
3709     ranlib_default="${cross_prefix}${ranlib_default}"
3710 fi
3711 strip_default="${cross_prefix}${strip_default}"
3712 windres_default="${cross_prefix}${windres_default}"
3713
3714 sysinclude_default="${sysroot}/usr/include"
3715
3716 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3717     target_exec target_os yasmexe
3718 enabled cross_compile || host_cc_default=$cc
3719 set_default host_cc
3720
3721 pkg_config_fail_message=""
3722 if ! $pkg_config --version >/dev/null 2>&1; then
3723     warn "$pkg_config not found, library detection may fail."
3724     pkg_config=false
3725 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3726     pkg_config_fail_message="
3727 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3728 fi
3729
3730 if test $doxygen != $doxygen_default && \
3731   ! $doxygen --version >/dev/null 2>&1; then
3732     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3733 fi
3734
3735 exesuf() {
3736     case $1 in
3737         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3738     esac
3739 }
3740
3741 EXESUF=$(exesuf $target_os)
3742 HOSTEXESUF=$(exesuf $host_os)
3743
3744 # set temporary file name
3745 : ${TMPDIR:=$TEMPDIR}
3746 : ${TMPDIR:=$TMP}
3747 : ${TMPDIR:=/tmp}
3748
3749 if [ -n "$tempprefix" ] ; then
3750     mktemp(){
3751         echo $tempprefix.${HOSTNAME}.${UID}
3752     }
3753 elif ! check_cmd mktemp -u XXXXXX; then
3754     # simple replacement for missing mktemp
3755     # NOT SAFE FOR GENERAL USE
3756     mktemp(){
3757         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3758     }
3759 fi
3760
3761 tmpfile(){
3762     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3763         (set -C; exec > $tmp) 2>/dev/null ||
3764         die "Unable to create temporary file in $TMPDIR."
3765     append TMPFILES $tmp
3766     eval $1=$tmp
3767 }
3768
3769 trap 'rm -f -- $TMPFILES' EXIT
3770
3771 tmpfile TMPASM .asm
3772 tmpfile TMPC   .c
3773 tmpfile TMPCPP .cpp
3774 tmpfile TMPE   $EXESUF
3775 tmpfile TMPH   .h
3776 tmpfile TMPM   .m
3777 tmpfile TMPO   .o
3778 tmpfile TMPS   .S
3779 tmpfile TMPSH  .sh
3780 tmpfile TMPV   .ver
3781
3782 unset -f mktemp
3783
3784 chmod +x $TMPE
3785
3786 # make sure we can execute files in $TMPDIR
3787 cat > $TMPSH 2>> $logfile <<EOF
3788 #! /bin/sh
3789 EOF
3790 chmod +x $TMPSH >> $logfile 2>&1
3791 if ! $TMPSH >> $logfile 2>&1; then
3792     cat <<EOF
3793 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3794 variable to another directory and make sure that it is not mounted noexec.
3795 EOF
3796     die "Sanity test failed."
3797 fi
3798
3799 armasm_flags(){
3800     for flag; do
3801         case $flag in
3802             # Filter out MSVC cl.exe options from cflags that shouldn't
3803             # be passed to gas-preprocessor
3804             -M[TD]*)                                            ;;
3805             *)                  echo $flag                      ;;
3806         esac
3807    done
3808 }
3809
3810 ccc_flags(){
3811     for flag; do
3812         case $flag in
3813             -std=c99)           echo -c99                       ;;
3814             -mcpu=*)            echo -arch ${flag#*=}           ;;
3815             -mieee)             echo -ieee                      ;;
3816             -O*|-fast)          echo $flag                      ;;
3817             -fno-math-errno)    echo -assume nomath_errno       ;;
3818             -g)                 echo -g3                        ;;
3819             -Wall)              echo -msg_enable level2         ;;
3820             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3821             -Wl,*)              echo $flag                      ;;
3822             -f*|-W*)                                            ;;
3823             *)                  echo $flag                      ;;
3824         esac
3825    done
3826 }
3827
3828 cparser_flags(){
3829     for flag; do
3830         case $flag in
3831             -Wno-switch)             echo -Wno-switch-enum ;;
3832             -Wno-format-zero-length) ;;
3833             -Wdisabled-optimization) ;;
3834             -Wno-pointer-sign)       echo -Wno-other ;;
3835             *)                       echo $flag ;;
3836         esac
3837     done
3838 }
3839
3840 msvc_common_flags(){
3841     for flag; do
3842         case $flag in
3843             # In addition to specifying certain flags under the compiler
3844             # specific filters, they must be specified here as well or else the
3845             # generic catch all at the bottom will print the original flag.
3846             -Wall)                ;;
3847             -std=c99)             ;;
3848             # Common flags
3849             -fomit-frame-pointer) ;;
3850             -g)                   echo -Z7 ;;
3851             -fno-math-errno)      ;;
3852             -fno-common)          ;;
3853             -fno-signed-zeros)    ;;
3854             -fPIC)                ;;
3855             -mthumb)              ;;
3856             -march=*)             ;;
3857             -lz)                  echo zlib.lib ;;
3858             -lx264)               echo libx264.lib ;;
3859             -lstdc++)             ;;
3860             -l*)                  echo ${flag#-l}.lib ;;
3861             -LARGEADDRESSAWARE)   echo $flag ;;
3862             -L*)                  echo -libpath:${flag#-L} ;;
3863             *)                    echo $flag ;;
3864         esac
3865     done
3866 }
3867
3868 msvc_flags(){
3869     msvc_common_flags "$@"
3870     for flag; do
3871         case $flag in
3872             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3873                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3874                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3875                                        -wd4307 \
3876                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
3877         esac
3878     done
3879 }
3880
3881 icl_flags(){
3882     msvc_common_flags "$@"
3883     for flag; do
3884         case $flag in
3885             # Despite what Intel's documentation says -Wall, which is supported
3886             # on Windows, does enable remarks so disable them here.
3887             -Wall)                echo $flag -Qdiag-disable:remark ;;
3888             -std=c99)             echo -Qstd=c99 ;;
3889             -flto)                echo -ipo ;;
3890         esac
3891     done
3892 }
3893
3894 icc_flags(){
3895     for flag; do
3896         case $flag in
3897             -flto)                echo -ipo ;;
3898             *)                    echo $flag ;;
3899         esac
3900     done
3901 }
3902
3903 pgi_flags(){
3904     for flag; do
3905         case $flag in
3906             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3907             -fomit-frame-pointer) echo -Mnoframe ;;
3908             -g)                   echo -gopt ;;
3909             *)                    echo $flag ;;
3910         esac
3911     done
3912 }
3913
3914 suncc_flags(){
3915     for flag; do
3916         case $flag in
3917             -march=*|-mcpu=*)
3918                 case "${flag#*=}" in
3919                     native)                   echo -xtarget=native       ;;
3920                     v9|niagara)               echo -xarch=sparc          ;;
3921                     ultrasparc)               echo -xarch=sparcvis       ;;
3922                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3923                     i586|pentium)             echo -xchip=pentium        ;;
3924                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3925                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3926                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3927                     pentium4*)          echo -xtarget=pentium4           ;;
3928                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3929                     *-sse3)             echo -xarch=sse3                 ;;
3930                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3931                     bonnell)                   echo -xarch=ssse3         ;;
3932                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3933                     westmere)                  echo -xtarget=westmere    ;;
3934                     silvermont)                echo -xarch=sse4_2        ;;
3935                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3936                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
3937                                                echo -xarch=avx           ;;
3938                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3939                     btver1)                    echo -xarch=amdsse4a      ;;
3940                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
3941                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3942                     k8|opteron|athlon64|athlon-fx)
3943                                                echo -xarch=sse2a         ;;
3944                     athlon*)                   echo -xarch=pentium_proa  ;;
3945                 esac
3946                 ;;
3947             -std=c99)             echo -xc99              ;;
3948             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3949             -fPIC)                echo -KPIC -xcode=pic32 ;;
3950             -W*,*)                echo $flag              ;;
3951             -f*-*|-W*|-mimpure-text)                      ;;
3952             -shared)              echo -G                 ;;
3953             *)                    echo $flag              ;;
3954         esac
3955     done
3956 }
3957
3958 tms470_flags(){
3959     for flag; do
3960         case $flag in
3961             -march=*|-mcpu=*)
3962                 case "${flag#*=}" in
3963                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3964                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3965                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3966                     armv6*|arm11*)          echo -mv=6   ;;
3967                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3968                                             echo -mv=5e  ;;
3969                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3970                 esac
3971                 ;;
3972             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3973             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3974             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3975             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3976             -msoft-float)   echo --float_support=vfplib       ;;
3977             -O[0-3]|-mf=*)  echo $flag                        ;;
3978             -g)             echo -g -mn                       ;;
3979             -pds=*)         echo $flag                        ;;
3980             -D*|-I*)        echo $flag                        ;;
3981             --gcc|--abi=*)  echo $flag                        ;;
3982             -me)            echo $flag                        ;;
3983         esac
3984     done
3985 }
3986
3987 probe_cc(){
3988     pfx=$1
3989     _cc=$2
3990     first=$3
3991
3992     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3993     unset _ld_o _ldflags _ld_lib _ld_path
3994     unset _depflags _DEPCMD _DEPFLAGS
3995     _flags_filter=echo
3996
3997     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3998         true # no-op to avoid reading stdin in following checks
3999     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4000         _type=llvm_gcc
4001         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4002         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4003         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4004         _cflags_speed='-O3'
4005         _cflags_size='-Os'
4006     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4007         _type=gcc
4008         gcc_version=$($_cc --version | head -n1)
4009         gcc_basever=$($_cc -dumpversion)
4010         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4011         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4012         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4013         case $gcc_basever in
4014             2) ;;
4015             2.*) ;;
4016             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4017         esac
4018         if [ "$first" = true ]; then
4019             case $gcc_basever in
4020                 4.2*)
4021                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4022             esac
4023         fi
4024         _cflags_speed='-O3'
4025         _cflags_size='-Os'
4026     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4027         _type=icc
4028         _ident=$($_cc --version | head -n1)
4029         _depflags='-MMD'
4030         _cflags_speed='-O3'
4031         _cflags_size='-Os'
4032         _cflags_noopt='-O1'
4033         _flags_filter=icc_flags
4034     elif $_cc -v 2>&1 | grep -q xlc; then
4035         _type=xlc
4036         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4037         _cflags_speed='-O5'
4038         _cflags_size='-O5 -qcompact'
4039     elif $_cc -V 2>/dev/null | grep -q Compaq; then
4040         _type=ccc
4041         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
4042         _DEPFLAGS='-M'
4043         _cflags_speed='-fast'
4044         _cflags_size='-O1'
4045         _flags_filter=ccc_flags
4046     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4047         test -d "$sysroot" || die "No valid sysroot specified."
4048         _type=armcc
4049         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4050         armcc_conf="$PWD/armcc.conf"
4051         $_cc --arm_linux_configure                 \
4052              --arm_linux_config_file="$armcc_conf" \
4053              --configure_sysroot="$sysroot"        \
4054              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4055              die "Error creating armcc configuration file."
4056         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4057         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4058         as_default="${cross_prefix}gcc"
4059         _depflags='-MMD'
4060         _cflags_speed='-O3'
4061         _cflags_size='-Os'
4062     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
4063         _type=tms470
4064         _ident=$($_cc -version | head -n1 | tr -s ' ')
4065         _flags='--gcc --abi=eabi -me'
4066         _cc_e='-ppl -fe=$@'
4067         _cc_o='-fe=$@'
4068         _depflags='-ppa -ppd=$(@:.o=.d)'
4069         _cflags_speed='-O3 -mf=5'
4070         _cflags_size='-O3 -mf=2'
4071         _flags_filter=tms470_flags
4072     elif $_cc -v 2>&1 | grep -q clang; then
4073         _type=clang
4074         _ident=$($_cc --version 2>/dev/null | head -n1)
4075         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4076         _cflags_speed='-O3'
4077         _cflags_size='-Oz'
4078     elif $_cc -V 2>&1 | grep -q Sun; then
4079         _type=suncc
4080         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4081         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4082         _DEPFLAGS='-xM1 -xc99'
4083         _ldflags='-std=c99'
4084         _cflags_speed='-O5'
4085         _cflags_size='-O5 -xspace'
4086         _flags_filter=suncc_flags
4087     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4088         _type=pathscale
4089         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4090         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4091         _cflags_speed='-O2'
4092         _cflags_size='-Os'
4093         _flags_filter='filter_out -Wdisabled-optimization'
4094     elif $_cc -v 2>&1 | grep -q Open64; then
4095         _type=open64
4096         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4097         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4098         _cflags_speed='-O2'
4099         _cflags_size='-Os'
4100         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4101     elif $_cc -V 2>&1 | grep -q Portland; then
4102         _type=pgi
4103         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
4104         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
4105         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
4106         _cflags_size="-O2 -Munroll=c:1 $opt_common"
4107         _cflags_noopt="-O"
4108         _flags_filter=pgi_flags
4109     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4110         _type=armasm
4111         _ident=$($_cc | head -n1)
4112         # 4509: "This form of conditional instruction is deprecated"
4113         _flags="-nologo -ignore 4509"
4114         _flags_filter=armasm_flags
4115     elif $_cc 2>&1 | grep -q Intel; then
4116         _type=icl
4117         _ident=$($_cc 2>&1 | head -n1)
4118         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4119         # Not only is O3 broken on 13.x+ but it is slower on all previous
4120         # versions (tested) as well.
4121         _cflags_speed="-O2"
4122         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4123         if $_cc 2>&1 | grep -q Linker; then
4124             _ld_o='-out:$@'
4125         else
4126             _ld_o='-Fe$@'
4127         fi
4128         _cc_o='-Fo$@'
4129         _cc_e='-P'
4130         _flags_filter=icl_flags
4131         _ld_lib='lib%.a'
4132         _ld_path='-libpath:'
4133         # -Qdiag-error to make icl error when seeing certain unknown arguments
4134         _flags='-nologo -Qdiag-error:4044,10157'
4135         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4136         # with MSVC which enables it by default.
4137         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4138         disable stripping
4139     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4140         # lld can emulate multiple different linkers; in ms link.exe mode,
4141         # the -? parameter gives the help output which contains an identifyable
4142         # string, while it gives an error in other modes.
4143         _type=lld-link
4144         # The link.exe mode doesn't have a switch for getting the version,
4145         # but we can force it back to gnu mode and get the version from there.
4146         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4147         _ld_o='-out:$@'
4148         _flags_filter=msvc_flags
4149         _ld_lib='lib%.a'
4150         _ld_path='-libpath:'
4151     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4152         _type=msvc
4153         _ident=$($_cc 2>&1 | head -n1)
4154         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4155         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4156         _cflags_speed="-O2"
4157         _cflags_size="-O1"
4158         _cflags_noopt="-O1"
4159         if $_cc -nologo- 2>&1 | grep -q Linker; then
4160             _ld_o='-out:$@'
4161         else
4162             _ld_o='-Fe$@'
4163         fi
4164         _cc_o='-Fo$@'
4165         _cc_e='-P -Fi$@'
4166         _flags_filter=msvc_flags
4167         _ld_lib='lib%.a'
4168         _ld_path='-libpath:'
4169         _flags='-nologo'
4170         disable stripping
4171     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4172         _type=cparser
4173         _ident=$($_cc --version | head -n1)
4174         _depflags='-MMD'
4175         _cflags_speed='-O4'
4176         _cflags_size='-O2'
4177         _flags_filter=cparser_flags
4178     fi
4179
4180     eval ${pfx}_type=\$_type
4181     eval ${pfx}_ident=\$_ident
4182 }
4183
4184 set_ccvars(){
4185     eval ${1}_C=\${_cc_c-\${${1}_C}}
4186     eval ${1}_E=\${_cc_e-\${${1}_E}}
4187     eval ${1}_O=\${_cc_o-\${${1}_O}}
4188
4189     if [ -n "$_depflags" ]; then
4190         eval ${1}_DEPFLAGS=\$_depflags
4191     else
4192         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4193         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4194         eval DEP${1}FLAGS=\$_flags
4195     fi
4196 }
4197
4198 probe_cc cc "$cc" "true"
4199 cflags_filter=$_flags_filter
4200 cflags_speed=$_cflags_speed
4201 cflags_size=$_cflags_size
4202 cflags_noopt=$_cflags_noopt
4203 add_cflags $_flags $_cflags
4204 cc_ldflags=$_ldflags
4205 set_ccvars CC
4206 set_ccvars CXX
4207
4208 probe_cc hostcc "$host_cc"
4209 host_cflags_filter=$_flags_filter
4210 add_host_cflags  $_flags $_cflags
4211 set_ccvars HOSTCC
4212
4213 test -n "$cc_type" && enable $cc_type ||
4214     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4215
4216 : ${as_default:=$cc}
4217 : ${objcc_default:=$cc}
4218 : ${dep_cc_default:=$cc}
4219 : ${ld_default:=$cc}
4220 : ${host_ld_default:=$host_cc}
4221 set_default ar as objcc dep_cc ld ln_s host_ld windres
4222
4223 probe_cc as "$as"
4224 asflags_filter=$_flags_filter
4225 add_asflags $_flags $_cflags
4226 set_ccvars AS
4227
4228 probe_cc objcc "$objcc"
4229 objcflags_filter=$_flags_filter
4230 add_objcflags $_flags $_cflags
4231 set_ccvars OBJC
4232
4233 probe_cc ld "$ld"
4234 ldflags_filter=$_flags_filter
4235 add_ldflags $_flags $_ldflags
4236 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4237 LD_O=${_ld_o-$LD_O}
4238 LD_LIB=${_ld_lib-$LD_LIB}
4239 LD_PATH=${_ld_path-$LD_PATH}
4240
4241 probe_cc hostld "$host_ld"
4242 host_ldflags_filter=$_flags_filter
4243 add_host_ldflags $_flags $_ldflags
4244 HOSTLD_O=${_ld_o-$HOSTLD_O}
4245
4246 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4247     probe_cc depcc "$dep_cc"
4248     CCDEP=${_DEPCMD:-$DEPCMD}
4249     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4250     DEPCCFLAGS=$_flags
4251 fi
4252
4253 if $ar 2>&1 | grep -q Microsoft; then
4254     arflags="-nologo"
4255     ar_o='-out:$@'
4256 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
4257     arflags="rq"
4258     ar_o='$@'
4259 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
4260     arflags='-Xany -r -c'
4261     ar_o='$@'
4262 elif $ar 2>&1 | grep -q "\[D\] "; then
4263     arflags="rcD"
4264     ar_o='$@'
4265 else
4266     arflags="rc"
4267     ar_o='$@'
4268 fi
4269
4270 add_cflags $extra_cflags
4271 add_cxxflags $extra_cxxflags
4272 add_objcflags $extra_objcflags
4273 add_asflags $extra_cflags
4274
4275 if test -n "$sysroot"; then
4276     case "$cc_type" in
4277         gcc|llvm_gcc|clang)
4278             add_cppflags --sysroot="$sysroot"
4279             add_ldflags --sysroot="$sysroot"
4280 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
4281             add_cppflags -isysroot "$sysroot"
4282             add_ldflags -isysroot "$sysroot"
4283         ;;
4284         tms470)
4285             add_cppflags -I"$sysinclude"
4286             add_ldflags  --sysroot="$sysroot"
4287         ;;
4288     esac
4289 fi
4290
4291 if test "$cpu" = host; then
4292     enabled cross_compile &&
4293         die "--cpu=host makes no sense when cross-compiling."
4294
4295     case "$cc_type" in
4296         gcc|llvm_gcc)
4297             check_native(){
4298                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4299                 sed -n "/cc1.*$1=/{
4300                             s/.*$1=\\([^ ]*\\).*/\\1/
4301                             p
4302                             q
4303                         }" $TMPE
4304             }
4305             cpu=$(check_native -march || check_native -mcpu)
4306         ;;
4307         clang)
4308             check_native(){
4309                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4310                 sed -n "/cc1.*-target-cpu /{
4311                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4312                             p
4313                             q
4314                         }" $TMPE
4315             }
4316             cpu=$(check_native -march)
4317         ;;
4318     esac
4319
4320     test "${cpu:-host}" = host &&
4321         die "--cpu=host not supported with compiler $cc"
4322 fi
4323
4324 # Deal with common $arch aliases
4325 case "$arch" in
4326     aarch64|arm64)
4327         arch="aarch64"
4328     ;;
4329     arm*|iPad*|iPhone*)
4330         arch="arm"
4331     ;;
4332     mips*|IP*)
4333         case "$arch" in
4334         *el)
4335             add_cppflags -EL
4336             add_ldflags -EL
4337         ;;
4338         *eb)
4339             add_cppflags -EB
4340             add_ldflags -EB
4341         ;;
4342         esac
4343         arch="mips"
4344     ;;
4345     parisc*|hppa*)
4346         arch="parisc"
4347     ;;
4348     "Power Macintosh"|ppc*|powerpc*)
4349         arch="ppc"
4350     ;;
4351     s390|s390x)
4352         arch="s390"
4353     ;;
4354     sh4|sh)
4355         arch="sh4"
4356     ;;
4357     sun4*|sparc*)
4358         arch="sparc"
4359     ;;
4360     tilegx|tile-gx)
4361         arch="tilegx"
4362     ;;
4363     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4364         arch="x86"
4365     ;;
4366 esac
4367
4368 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4369 enable $arch
4370
4371 # Add processor-specific flags
4372 if enabled aarch64; then
4373
4374     case $cpu in
4375         armv*)
4376             cpuflags="-march=$cpu"
4377         ;;
4378         *)
4379             cpuflags="-mcpu=$cpu"
4380         ;;
4381     esac
4382
4383 elif enabled alpha; then
4384
4385     cpuflags="-mcpu=$cpu"
4386
4387 elif enabled arm; then
4388
4389     check_arm_arch() {
4390         check_cpp_condition stddef.h \
4391             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4392             $cpuflags
4393     }
4394
4395     probe_arm_arch() {
4396         if   check_arm_arch 4;        then echo armv4
4397         elif check_arm_arch 4T;       then echo armv4t
4398         elif check_arm_arch 5;        then echo armv5
4399         elif check_arm_arch 5E;       then echo armv5e
4400         elif check_arm_arch 5T;       then echo armv5t
4401         elif check_arm_arch 5TE;      then echo armv5te
4402         elif check_arm_arch 5TEJ;     then echo armv5te
4403         elif check_arm_arch 6;        then echo armv6
4404         elif check_arm_arch 6J;       then echo armv6j
4405         elif check_arm_arch 6K;       then echo armv6k
4406         elif check_arm_arch 6Z;       then echo armv6z
4407         elif check_arm_arch 6ZK;      then echo armv6zk
4408         elif check_arm_arch 6T2;      then echo armv6t2
4409         elif check_arm_arch 7;        then echo armv7
4410         elif check_arm_arch 7A  7_A;  then echo armv7-a
4411         elif check_arm_arch 7S;       then echo armv7-a
4412         elif check_arm_arch 7R  7_R;  then echo armv7-r
4413         elif check_arm_arch 7M  7_M;  then echo armv7-m
4414         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4415         elif check_arm_arch 8A  8_A;  then echo armv8-a
4416         fi
4417     }
4418
4419     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4420
4421     case $cpu in
4422         armv*)
4423             cpuflags="-march=$cpu"
4424             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4425         ;;
4426         *)
4427             cpuflags="-mcpu=$cpu"
4428             case $cpu in
4429                 cortex-a*)                               subarch=armv7a  ;;
4430                 cortex-r*)                               subarch=armv7r  ;;
4431                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4432                 arm11*)                                  subarch=armv6   ;;
4433                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4434                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4435                 *)                             subarch=$(probe_arm_arch) ;;
4436             esac
4437         ;;
4438     esac
4439
4440     case "$subarch" in
4441         armv5t*)    enable fast_clz                ;;
4442         armv[6-8]*)
4443             enable fast_clz
4444             disabled fast_unaligned || enable fast_unaligned
4445             ;;
4446     esac
4447
4448 elif enabled avr32; then
4449
4450     case $cpu in
4451         ap7[02]0[0-2])
4452             subarch="avr32_ap"
4453             cpuflags="-mpart=$cpu"
4454         ;;
4455         ap)
4456             subarch="avr32_ap"
4457             cpuflags="-march=$cpu"
4458         ;;
4459         uc3[ab]*)
4460             subarch="avr32_uc"
4461             cpuflags="-mcpu=$cpu"
4462         ;;
4463         uc)
4464             subarch="avr32_uc"
4465             cpuflags="-march=$cpu"
4466         ;;
4467     esac
4468
4469 elif enabled bfin; then
4470
4471     cpuflags="-mcpu=$cpu"
4472
4473 elif enabled mips; then
4474
4475     cpuflags="-march=$cpu"
4476
4477     if [ "$cpu" != "generic" ]; then
4478         disable mips32r2
4479         disable mips32r5
4480         disable mips64r2
4481         disable mips32r6
4482         disable mips64r6
4483         disable loongson2
4484         disable loongson3
4485
4486         case $cpu in
4487             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4488                 enable mips32r2
4489                 disable msa
4490             ;;
4491             p5600|i6400|p6600)
4492                 disable mipsdsp
4493                 disable mipsdspr2
4494             ;;
4495             loongson*)
4496                 enable loongson2
4497                 enable loongson3
4498                 enable local_aligned_8 local_aligned_16 local_aligned_32
4499                 enable simd_align_16
4500                 enable fast_64bit
4501                 enable fast_clz
4502                 enable fast_cmov
4503                 enable fast_unaligned
4504                 disable aligned_stack
4505                 disable mipsfpu
4506                 disable mipsdsp
4507                 disable mipsdspr2
4508                 case $cpu in
4509                     loongson3*)
4510                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4511                     ;;
4512                     loongson2e)
4513                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4514                     ;;
4515                     loongson2f)
4516                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4517                     ;;
4518                 esac
4519             ;;
4520             *)
4521                 # Unknown CPU. Disable everything.
4522                 warn "unknown CPU. Disabling all MIPS optimizations."
4523                 disable mipsfpu
4524                 disable mipsdsp
4525                 disable mipsdspr2
4526                 disable msa
4527                 disable mmi
4528             ;;
4529         esac
4530
4531         case $cpu in
4532             24kc)
4533                 disable mipsfpu
4534                 disable mipsdsp
4535                 disable mipsdspr2
4536             ;;
4537             24kf*)
4538                 disable mipsdsp
4539                 disable mipsdspr2
4540             ;;
4541             24kec|34kc|1004kc)
4542                 disable mipsfpu
4543                 disable mipsdspr2
4544             ;;
4545             24kef*|34kf*|1004kf*)
4546                 disable mipsdspr2
4547             ;;
4548             74kc)
4549                 disable mipsfpu
4550             ;;
4551             p5600)
4552                 enable mips32r5
4553                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4554             ;;
4555             i6400)
4556                 enable mips64r6
4557                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4558             ;;
4559             p6600)
4560                 enable mips64r6
4561                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4562             ;;
4563         esac
4564     else
4565         # We do not disable anything. Is up to the user to disable the unwanted features.
4566         warn 'generic cpu selected'
4567     fi
4568
4569 elif enabled ppc; then
4570
4571     disable ldbrx
4572
4573     case $(tolower $cpu) in
4574         601|ppc601|powerpc601)
4575             cpuflags="-mcpu=601"
4576             disable altivec
4577         ;;
4578         603*|ppc603*|powerpc603*)
4579             cpuflags="-mcpu=603"
4580             disable altivec
4581         ;;
4582         604*|ppc604*|powerpc604*)
4583             cpuflags="-mcpu=604"
4584             disable altivec
4585         ;;
4586         g3|75*|ppc75*|powerpc75*)
4587             cpuflags="-mcpu=750"
4588             disable altivec
4589         ;;
4590         g4|745*|ppc745*|powerpc745*)
4591             cpuflags="-mcpu=7450"
4592             disable vsx
4593         ;;
4594         74*|ppc74*|powerpc74*)
4595             cpuflags="-mcpu=7400"
4596             disable vsx
4597         ;;
4598         g5|970|ppc970|powerpc970)
4599             cpuflags="-mcpu=970"
4600             disable vsx
4601         ;;
4602         power[3-6]*)
4603             cpuflags="-mcpu=$cpu"
4604             disable vsx
4605         ;;
4606         power[7-8]*)
4607             cpuflags="-mcpu=$cpu"
4608         ;;
4609         cell)
4610             cpuflags="-mcpu=cell"
4611             enable ldbrx
4612             disable vsx
4613         ;;
4614         e500mc)
4615             cpuflags="-mcpu=e500mc"
4616             disable altivec
4617         ;;
4618         e500v2)
4619             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4620             disable altivec
4621             disable dcbzl
4622         ;;
4623         e500)
4624             cpuflags="-mcpu=8540 -mhard-float"
4625             disable altivec
4626             disable dcbzl
4627         ;;
4628     esac
4629
4630 elif enabled sparc; then
4631
4632     case $cpu in
4633         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4634             cpuflags="-mcpu=$cpu"
4635         ;;
4636         ultrasparc*|niagara[234])
4637             cpuflags="-mcpu=$cpu"
4638         ;;
4639     esac
4640
4641 elif enabled x86; then
4642
4643     case $cpu in
4644         i[345]86|pentium)
4645             cpuflags="-march=$cpu"
4646             disable i686
4647             disable mmx
4648         ;;
4649         # targets that do NOT support nopl and conditional mov (cmov)
4650         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4651             cpuflags="-march=$cpu"
4652             disable i686
4653         ;;
4654         # targets that do support nopl and conditional mov (cmov)
4655         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4656         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4657         |amdfam10|barcelona|b[dt]ver*|znver*)
4658             cpuflags="-march=$cpu"
4659             enable i686
4660             enable fast_cmov
4661         ;;
4662         # targets that do support conditional mov but on which it's slow
4663         pentium4|pentium4m|prescott|nocona)
4664             cpuflags="-march=$cpu"
4665             enable i686
4666             disable fast_cmov
4667         ;;
4668     esac
4669
4670 fi
4671
4672 if [ "$cpu" != generic ]; then
4673     add_cflags  $cpuflags
4674     add_asflags $cpuflags
4675     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4676 fi
4677
4678 # compiler sanity check
4679 check_exec <<EOF
4680 int main(void){ return 0; }
4681 EOF
4682 if test "$?" != 0; then
4683     echo "$cc is unable to create an executable file."
4684     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4685         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4686         echo "Only do this if you know what cross compiling means."
4687     fi
4688     die "C compiler test failed."
4689 fi
4690
4691 add_cppflags -D_ISOC99_SOURCE
4692 add_cxxflags -D__STDC_CONSTANT_MACROS
4693 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4694
4695 # some compilers silently accept -std=c11, so we also need to check that the
4696 # version macro is defined properly
4697 if test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L"; then
4698     add_cflags -std=c11
4699 else
4700     check_cflags -std=c99
4701 fi
4702
4703 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4704 #include <stdlib.h>
4705 EOF
4706 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4707 #include <stdlib.h>
4708 EOF
4709
4710 add_host_cppflags -D_ISOC99_SOURCE
4711 check_host_cflags -std=c99
4712 check_host_cflags -Wall
4713 check_host_cflags -O3
4714
4715 check_64bit(){
4716     arch32=$1
4717     arch64=$2
4718     expr=$3
4719     check_code cc "" "int test[2*($expr) - 1]" &&
4720         subarch=$arch64 || subarch=$arch32
4721 }
4722
4723 case "$arch" in
4724     aarch64|alpha|ia64)
4725         spic=$shared
4726     ;;
4727     mips)
4728         check_64bit mips mips64 '_MIPS_SIM > 1'
4729         spic=$shared
4730     ;;
4731     parisc)
4732         check_64bit parisc parisc64 'sizeof(void *) > 4'
4733         spic=$shared
4734     ;;
4735     ppc)
4736         check_64bit ppc ppc64 'sizeof(void *) > 4'
4737         spic=$shared
4738     ;;
4739     s390)
4740         check_64bit s390 s390x 'sizeof(void *) > 4'
4741         spic=$shared
4742     ;;
4743     sparc)
4744         check_64bit sparc sparc64 'sizeof(void *) > 4'
4745         spic=$shared
4746     ;;
4747     x86)
4748         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4749         # Treat x32 as x64 for now. Note it also needs spic=$shared
4750         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4751             subarch=x86_64
4752         if test "$subarch" = "x86_64"; then
4753             spic=$shared
4754         fi
4755     ;;
4756     ppc)
4757         check_cc <<EOF && subarch="ppc64"
4758         int test[(int)sizeof(char*) - 7];
4759 EOF
4760     ;;
4761 esac
4762
4763 enable $subarch
4764 enabled spic && enable_weak pic
4765
4766 # OS specific
4767 case $target_os in
4768     aix)
4769         SHFLAGS=-shared
4770         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4771         enabled shared && add_ldflags -Wl,-brtl
4772         ;;
4773     android)
4774         disable symver
4775         enable section_data_rel_ro
4776         SLIB_INSTALL_NAME='$(SLIBNAME)'
4777         SLIB_INSTALL_LINKS=
4778         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4779         ;;
4780     haiku)
4781         prefix_default="/boot/common"
4782         network_extralibs="-lnetwork"
4783         host_extralibs=
4784         ;;
4785     sunos)
4786         SHFLAGS='-shared -Wl,-h,$$(@F)'
4787         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4788         network_extralibs="-lsocket -lnsl"
4789         add_cppflags -D__EXTENSIONS__
4790         # When using suncc to build, the Solaris linker will mark
4791         # an executable with each instruction set encountered by
4792         # the Solaris assembler.  As our libraries contain their own
4793         # guards for processor-specific code, instead suppress
4794         # generation of the HWCAPS ELF section on Solaris x86 only.
4795         enabled_all suncc x86 &&
4796             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4797             add_ldflags -Wl,-M,mapfile
4798         nm_default='nm -P -g'
4799         version_script='-M'
4800         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
4801         ;;
4802     netbsd)
4803         disable symver
4804         oss_indev_extralibs="-lossaudio"
4805         oss_outdev_extralibs="-lossaudio"
4806         enabled gcc || check_ldflags -Wl,-zmuldefs
4807         ;;
4808     openbsd|bitrig)
4809         disable symver
4810         SHFLAGS='-shared'
4811         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4812         SLIB_INSTALL_LINKS=
4813         oss_indev_extralibs="-lossaudio"
4814         oss_outdev_extralibs="-lossaudio"
4815         ;;
4816     dragonfly)
4817         disable symver
4818         ;;
4819     freebsd)
4820         ;;
4821     bsd/os)
4822         add_extralibs -lpoll -lgnugetopt
4823         strip="strip -d"
4824         ;;
4825     darwin)
4826         enabled ppc && add_asflags -force_cpusubtype_ALL
4827         install_name_dir_default='$(SHLIBDIR)'
4828         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4829         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4830         strip="${strip} -x"
4831         add_ldflags -Wl,-dynamic,-search_paths_first
4832         SLIBSUF=".dylib"
4833         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4834         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4835         objformat="macho"
4836         enabled x86_64 && objformat="macho64"
4837         enabled_any pic shared x86_64 ||
4838             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4839         check_header dispatch/dispatch.h &&
4840             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
4841         version_script='-exported_symbols_list'
4842         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
4843         ;;
4844     msys*)
4845         die "Native MSYS builds are discouraged, please use the MINGW environment."
4846         ;;
4847     mingw32*|mingw64*)
4848         if test $target_os = "mingw32ce"; then
4849             disable network
4850         else
4851             target_os=mingw32
4852         fi
4853         decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
4854         decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
4855         LIBTARGET=i386
4856         if enabled x86_64; then
4857             LIBTARGET="i386:x86-64"
4858         elif enabled arm; then
4859             LIBTARGET=arm-wince
4860         fi
4861         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4862         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4863         shlibdir_default="$bindir_default"
4864         SLIBPREF=""
4865         SLIBSUF=".dll"
4866         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4867         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4868         dlltool="${cross_prefix}dlltool"
4869         if check_cmd lib.exe -list; then
4870             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4871             if enabled x86_64; then
4872                 LIBTARGET=x64
4873             fi
4874         elif check_cmd $dlltool --version; then
4875             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4876         fi
4877         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4878         SLIB_INSTALL_LINKS=
4879         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4880         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4881         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--disable-auto-image-base'
4882         objformat="win32"
4883         ranlib=:
4884         enable dos_paths
4885         check_ldflags -Wl,--nxcompat,--dynamicbase
4886         # Lets work around some stupidity in binutils.
4887         # ld will strip relocations from executables even though we need them
4888         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4889         # however ld then forgets what the entry point should be (oops) so we
4890         # have to manually (re)set it.
4891         if enabled x86_32; then
4892             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
4893         elif enabled x86_64; then
4894             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
4895             check_ldflags -Wl,--high-entropy-va # binutils 2.25
4896             # Set image base >4GB for extra entropy with HEASLR
4897             add_ldexeflags -Wl,--image-base,0x140000000
4898             append SHFLAGS -Wl,--image-base,0x180000000
4899         fi
4900         ;;
4901     win32|win64)
4902         disable symver
4903         if enabled shared; then
4904             # Link to the import library instead of the normal static library
4905             # for shared libs.
4906             LD_LIB='%.lib'
4907             # Cannot build both shared and static libs with MSVC or icl.
4908             disable static
4909         fi
4910         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4911         shlibdir_default="$bindir_default"
4912         SLIBPREF=""
4913         SLIBSUF=".dll"
4914         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4915         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4916         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4917         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4918         SLIB_INSTALL_LINKS=
4919         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4920         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4921         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4922         objformat="win32"
4923         ranlib=:
4924         enable dos_paths
4925         ;;
4926     cygwin*)
4927         target_os=cygwin
4928         shlibdir_default="$bindir_default"
4929         SLIBPREF="cyg"
4930         SLIBSUF=".dll"
4931         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4932         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4933         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4934         SLIB_INSTALL_LINKS=
4935         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4936         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4937         objformat="win32"
4938         enable dos_paths
4939         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4940         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4941         ;;
4942     *-dos|freedos|opendos)
4943         network_extralibs="-lsocket"
4944         objformat="coff"
4945         enable dos_paths
4946         add_cppflags -U__STRICT_ANSI__
4947         ;;
4948     linux)
4949         enable dv1394
4950         enable section_data_rel_ro
4951         ;;
4952     irix*)
4953         target_os=irix
4954         ranlib="echo ignoring ranlib"
4955         ;;
4956     os/2*)
4957         strip="lxlite -CS"
4958         objformat="aout"
4959         add_cppflags -D_GNU_SOURCE
4960         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4961         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4962         LIBSUF="_s.a"
4963         SLIBPREF=""
4964         SLIBSUF=".dll"
4965         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4966         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4967         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
4968             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
4969             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
4970             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
4971             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
4972         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
4973             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
4974         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4975         SLIB_INSTALL_LINKS=
4976         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
4977         enable dos_paths
4978         enable_weak os2threads
4979         ;;
4980     gnu/kfreebsd)
4981         add_cppflags -D_BSD_SOURCE
4982         ;;
4983     gnu)
4984         ;;
4985     qnx)
4986         add_cppflags -D_QNX_SOURCE
4987         network_extralibs="-lsocket"
4988         ;;
4989     symbian)
4990         SLIBSUF=".dll"
4991         enable dos_paths
4992         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4993         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4994         add_ldflags -Wl,--target1-abs,--no-undefined \
4995                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4996                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4997         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4998                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4999                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5000         ;;
5001     osf1)
5002         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
5003         ;;
5004     minix)
5005         ;;
5006     none)
5007         ;;
5008     *)
5009         die "Unknown OS '$target_os'."
5010         ;;
5011 esac
5012
5013 # test if creating links works
5014 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5015 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5016 mkdir "$link_dest"
5017 $ln_s "$link_dest" "$link_name"
5018 touch "$link_dest/test_file"
5019 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5020     # create link to source path
5021     [ -e src ] && rm src
5022     $ln_s "$source_path" src
5023     source_link=src
5024 else
5025     # creating directory links doesn't work
5026     # fall back to using the full source path
5027     source_link="$source_path"
5028 fi
5029 # cleanup
5030 rm -r "$link_dest"
5031 rm -r "$link_name"
5032
5033 # determine libc flavour
5034
5035 probe_libc(){
5036     pfx=$1
5037     pfx_no_=${pfx%_}
5038     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5039     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5040         eval ${pfx}libc_type=uclibc
5041         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5042     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5043         eval ${pfx}libc_type=glibc
5044         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5045     # MinGW headers can be installed on Cygwin, so check for newlib first.
5046     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5047         eval ${pfx}libc_type=newlib
5048         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5049     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5050     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5051         eval ${pfx}libc_type=mingw64
5052         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5053             add_compat msvcrt/snprintf.o
5054             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5055         fi
5056         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5057         eval test \$${pfx_no_}cc_type = "gcc" &&
5058             add_${pfx}cppflags -D__printf__=__gnu_printf__
5059     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5060          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5061         eval ${pfx}libc_type=mingw32
5062         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5063             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5064             die "ERROR: MinGW32 runtime version must be >= 3.15."
5065         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5066         check_${pfx}cpp_condition _mingw.h "defined(_WIN32_WINNT) && _WIN32_WINNT >= 0x0502" ||
5067             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
5068         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700__" &&
5069             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5070         eval test \$${pfx_no_}cc_type = "gcc" &&
5071             add_${pfx}cppflags -D__printf__=__gnu_printf__
5072     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5073         eval ${pfx}libc_type=msvcrt
5074         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5075             if [ "$pfx" = host_ ]; then
5076                 add_host_cppflags -Dsnprintf=_snprintf
5077             else
5078                 add_compat strtod.o strtod=avpriv_strtod
5079                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5080                                              _snprintf=avpriv_snprintf  \
5081                                              vsnprintf=avpriv_vsnprintf
5082             fi
5083         fi
5084         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5085         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5086         # 0x601 by default unless something else is set by the user.
5087         # This can easily lead to us detecting functions only present
5088         # in such new versions and producing binaries requiring windows 7.0.
5089         # Therefore explicitly set the default to XP unless the user has
5090         # set something else on the command line.
5091         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5092         # family. For these cases, configure is free to use any functions
5093         # found in the SDK headers by default. (Alternatively, we could force
5094         # _WIN32_WINNT to 0x0602 in that case.)
5095         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5096             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
5097 #ifdef WINAPI_FAMILY
5098 #include <winapifamily.h>
5099 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5100 #error not desktop
5101 #endif
5102 #endif
5103 EOF
5104         if [ "$pfx" = "" ]; then
5105             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5106             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5107         fi
5108     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5109         eval ${pfx}libc_type=klibc
5110     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5111         eval ${pfx}libc_type=bionic
5112     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5113         eval ${pfx}libc_type=solaris
5114         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5115     fi
5116     check_${pfx}cc <<EOF
5117 #include <time.h>
5118 void *v = localtime_r;
5119 EOF
5120 test "$?" != 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
5121 #include <time.h>
5122 void *v = localtime_r;
5123 EOF
5124
5125 }
5126
5127 probe_libc
5128 test -n "$libc_type" && enable libc_$libc_type
5129 probe_libc host_
5130 test -n "$host_libc_type" && enable host_libc_$host_libc_type
5131
5132 case $libc_type in
5133     bionic)
5134         add_compat strtod.o strtod=avpriv_strtod
5135         ;;
5136 esac
5137
5138 # hacks for compiler/libc/os combinations
5139
5140 if enabled_all tms470 libc_glibc; then
5141     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
5142     add_cppflags -D__USER_LABEL_PREFIX__=
5143     add_cppflags -D__builtin_memset=memset
5144     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
5145     add_cflags   -pds=48    # incompatible redefinition of macro
5146 fi
5147
5148 if enabled_all ccc libc_glibc; then
5149     add_ldflags -Wl,-z,now  # calls to libots crash without this
5150 fi
5151
5152 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5153     add_cppflags '-I\$(SRC_PATH)/compat/float'
5154
5155 esc(){
5156     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
5157 }
5158
5159 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
5160
5161 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5162
5163 set_default libdir
5164 : ${shlibdir_default:="$libdir"}
5165 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5166
5167 set_default $PATHS_LIST
5168 set_default nm
5169
5170 # we need to build at least one lib type
5171 if ! enabled_any static shared; then
5172     cat <<EOF
5173 At least one library type must be built.
5174 Specify --enable-static to build the static libraries or --enable-shared to
5175 build the shared libraries as well. To only build the shared libraries specify
5176 --disable-static in addition to --enable-shared.
5177 EOF
5178     exit 1
5179 fi
5180
5181 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5182
5183 enable_weak_pic() {
5184     disabled pic && return
5185     enable pic
5186     add_cppflags -DPIC
5187     case "$target_os" in
5188     mingw*|cygwin*)
5189         ;;
5190     *)
5191         add_cflags -fPIC
5192         ;;
5193     esac
5194     add_asflags  -fPIC
5195 }
5196
5197 enabled pic && enable_weak_pic
5198
5199 check_cc <<EOF || die "Symbol mangling check failed."
5200 int ff_extern;
5201 EOF
5202 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5203 extern_prefix=${sym%%ff_extern*}
5204
5205 check_cc <<EOF && enable_weak inline_asm
5206 void foo(void) { __asm__ volatile ("" ::); }
5207 EOF
5208
5209 _restrict=
5210 for restrict_keyword in restrict __restrict__ __restrict; do
5211     check_cc <<EOF && _restrict=$restrict_keyword && break
5212 void foo(char * $restrict_keyword p);
5213 EOF
5214 done
5215
5216 check_cc <<EOF && enable pragma_deprecated
5217 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
5218 EOF
5219
5220 check_cc <<EOF && enable attribute_packed
5221 struct { int x; } __attribute__((packed)) x;
5222 EOF
5223
5224 check_cc <<EOF && enable attribute_may_alias
5225 union { int x; } __attribute__((may_alias)) x;
5226 EOF
5227
5228 check_cc <<EOF || die "endian test failed"
5229 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5230 EOF
5231 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5232
5233 if ! enabled ppc64 || enabled bigendian; then
5234     disable vsx
5235 fi
5236
5237 check_gas() {
5238     log "check_gas using '$as' as AS"
5239     # :vararg is used on aarch64, arm and ppc altivec
5240     check_as <<EOF || return 1
5241 .macro m n, y:vararg=0
5242 \n: .int \y
5243 .endm
5244 m x
5245 EOF
5246     # .altmacro is only used in arm asm
5247     ! enabled arm || check_as <<EOF || return 1
5248 .altmacro
5249 EOF
5250     enable gnu_as
5251     return 0
5252 }
5253
5254 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5255     nogas=:
5256     enabled_any arm aarch64 && nogas=die
5257     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5258     as_noop=-v
5259
5260     case $as_type in
5261         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5262         gcc)  gaspp_as_type=gas ;;
5263         *)    gaspp_as_type=$as_type ;;
5264     esac
5265
5266     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5267
5268     test "${as#*gas-preprocessor.pl}" != "$as" ||
5269     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5270         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5271
5272     if ! check_gas ; then
5273         as=${gas:=$as}
5274         check_gas || \
5275             $nogas "GNU assembler not found, install/update gas-preprocessor"
5276     fi
5277
5278     check_as <<EOF && enable as_func
5279 .func test
5280 .endfunc
5281 EOF
5282 fi
5283
5284 check_inline_asm inline_asm_labels '"1:\n"'
5285
5286 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5287
5288 if enabled aarch64; then
5289     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5290     # internal assembler in clang 3.3 does not support this instruction
5291     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5292     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5293
5294     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5295
5296 elif enabled alpha; then
5297
5298     check_cflags -mieee
5299
5300 elif enabled arm; then
5301
5302     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
5303
5304     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
5305 float func(float a, float b){ return a+b; }
5306 EOF
5307
5308     enabled thumb && check_cflags -mthumb || check_cflags -marm
5309
5310     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
5311         enable vfp_args
5312     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5313         enable vfp_args
5314     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5315         case "${cross_prefix:-$cc}" in
5316             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
5317             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
5318 __asm__ (".eabi_attribute 28, 1");
5319 int main(void) { return 0; }
5320 EOF
5321         esac
5322         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5323     fi
5324
5325     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5326     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5327     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5328     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5329     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5330     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5331     enabled setend  && check_insn setend  'setend be'
5332
5333     [ $target_os = linux ] || [ $target_os = android ] ||
5334         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5335             $ARCH_EXT_LIST_ARM
5336
5337     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5338
5339     check_as <<EOF && enable as_dn_directive
5340 ra .dn d0.i16
5341 .unreq ra
5342 EOF
5343     check_as <<EOF && enable as_fpu_directive
5344 .fpu neon
5345 EOF
5346
5347     # llvm's integrated assembler supports .object_arch from llvm 3.5
5348     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
5349 .object_arch armv4
5350 EOF
5351
5352     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5353
5354 elif enabled mips; then
5355
5356     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5357     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5358     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5359
5360     # Enable minimum ISA based on selected options
5361     if enabled mips64; then
5362         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5363         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5364         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5365     else
5366         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5367         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5368         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5369         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5370     fi
5371
5372     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5373     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5374     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
5375     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5376     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5377
5378 elif enabled parisc; then
5379
5380     if enabled gcc; then
5381         case $($cc -dumpversion) in
5382             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5383         esac
5384     fi
5385
5386 elif enabled ppc; then
5387
5388     enable local_aligned_8 local_aligned_16 local_aligned_32
5389
5390     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5391     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5392     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5393     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5394
5395     # AltiVec flags: The FSF version of GCC differs from the Apple version
5396     if enabled altivec; then
5397         check_cflags -maltivec -mabi=altivec &&
5398         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
5399         check_cflags -faltivec
5400
5401         # check if our compiler supports Motorola AltiVec C API
5402         check_cc <<EOF || disable altivec
5403 $inc_altivec_h
5404 int main(void) {
5405     vector signed int v1 = (vector signed int) { 0 };
5406     vector signed int v2 = (vector signed int) { 1 };
5407     v1 = vec_add(v1, v2);
5408     return 0;
5409 }
5410 EOF
5411
5412         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5413     fi
5414
5415     if enabled vsx; then
5416         check_cflags -mvsx &&
5417         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
5418     fi
5419
5420     if enabled power8; then
5421         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
5422     fi
5423
5424 elif enabled x86; then
5425
5426     check_builtin rdtsc    intrin.h   "__rdtsc()"
5427     check_builtin mm_empty mmintrin.h "_mm_empty()"
5428
5429     enable local_aligned_8 local_aligned_16 local_aligned_32
5430
5431     # check whether EBP is available on x86
5432     # As 'i' is stored on the stack, this program will crash
5433     # if the base pointer is used to access it because the
5434     # base pointer is cleared in the inline assembly code.
5435     check_exec_crash <<EOF && enable ebp_available
5436 volatile int i=0;
5437 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5438 return i;
5439 EOF
5440
5441     # check whether EBX is available on x86
5442     check_inline_asm ebx_available '""::"b"(0)' &&
5443         check_inline_asm ebx_available '"":::"%ebx"'
5444
5445     # check whether xmm clobbers are supported
5446     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5447
5448     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5449         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5450
5451     # check whether binutils is new enough to compile SSSE3/MMXEXT
5452     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5453     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5454
5455     if ! disabled_any asm mmx yasm; then
5456         if check_cmd $yasmexe --version; then
5457             enabled x86_64 && yasm_extra="-m amd64"
5458             yasm_debug="-g dwarf2"
5459         elif check_cmd nasm -v; then
5460             yasmexe=nasm
5461             yasm_debug="-g -F dwarf"
5462             if enabled x86_64; then
5463                 case "$objformat" in
5464                     elf)   objformat=elf64 ;;
5465                     win32) objformat=win64 ;;
5466                 esac
5467             fi
5468         fi
5469
5470         YASMFLAGS="-f $objformat $yasm_extra"
5471         enabled pic               && append YASMFLAGS "-DPIC"
5472         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
5473         case "$objformat" in
5474             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
5475         esac
5476
5477         check_yasm "movbe ecx, [5]" && enable yasm ||
5478             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
5479         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
5480         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
5481         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
5482         check_yasm "CPU amdnop" || disable cpunop
5483     fi
5484
5485     case "$cpu" in
5486         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5487             disable fast_clz
5488         ;;
5489     esac
5490
5491 fi
5492
5493 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
5494
5495 check_ldflags -Wl,--as-needed
5496 check_ldflags -Wl,-z,noexecstack
5497
5498 if check_func dlopen && check_func dlsym; then
5499     ldl=
5500 elif check_func dlopen -ldl && check_func dlsym -ldl; then
5501     ldl=-ldl
5502 fi
5503
5504 avisynth_demuxer_extralibs='$ldl'
5505 cuda_extralibs='$ldl'
5506 decklink_outdev_extralibs="$decklink_outdev_extralibs $ldl"
5507 decklink_indev_extralibs="$decklink_indev_extralibs $ldl"
5508 frei0r_filter_extralibs='$ldl'
5509 frei0r_src_filter_extralibs='$ldl'
5510 ladspa_filter_extralibs='$ldl'
5511 nvenc_extralibs='$ldl'
5512 coreimage_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5513 coreimagesrc_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5514
5515 if ! disabled network; then
5516     check_func getaddrinfo $network_extralibs
5517     check_func inet_aton $network_extralibs
5518
5519     check_type netdb.h "struct addrinfo"
5520     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5521     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5522     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5523     check_type poll.h "struct pollfd"
5524     check_type netinet/sctp.h "struct sctp_event_subscribe"
5525     check_struct "sys/socket.h" "struct msghdr" msg_flags
5526     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5527     check_type netinet/in.h "struct sockaddr_in6"
5528     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5529     check_type "sys/types.h sys/socket.h" socklen_t
5530
5531     # Prefer arpa/inet.h over winsock2
5532     if check_header arpa/inet.h ; then
5533         check_func closesocket
5534     elif check_header winsock2.h ; then
5535         check_func_headers winsock2.h closesocket -lws2 &&
5536             network_extralibs="-lws2" ||
5537         { check_func_headers winsock2.h closesocket -lws2_32 &&
5538             network_extralibs="-lws2_32"; } || disable winsock2_h network
5539         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5540
5541         check_type ws2tcpip.h socklen_t
5542         check_type ws2tcpip.h "struct addrinfo"
5543         check_type ws2tcpip.h "struct group_source_req"
5544         check_type ws2tcpip.h "struct ip_mreq_source"
5545         check_type ws2tcpip.h "struct ipv6_mreq"
5546         check_type winsock2.h "struct pollfd"
5547         check_struct winsock2.h "struct sockaddr" sa_len
5548         check_type ws2tcpip.h "struct sockaddr_in6"
5549         check_type ws2tcpip.h "struct sockaddr_storage"
5550     else
5551         disable network
5552     fi
5553 fi
5554
5555 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5556 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5557 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5558 check_builtin sarestart signal.h "SA_RESTART"
5559 check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" -lpthread
5560 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5561 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5562 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5563 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5564
5565 case "$custom_allocator" in
5566     jemalloc)
5567         # jemalloc by default does not use a prefix
5568         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5569     ;;
5570     tcmalloc)
5571         require_pkg_config libtcmalloc gperftools/tcmalloc.h tc_malloc
5572         malloc_prefix=tc_
5573     ;;
5574 esac
5575
5576 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5577 check_func  ${malloc_prefix}memalign            && enable memalign
5578 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5579
5580 check_func  access
5581 check_func_headers stdlib.h arc4random
5582 check_func_headers time.h clock_gettime ||
5583     { check_lib clock_gettime time.h clock_gettime -lrt && LIBRT="-lrt"; }
5584 check_func  fcntl
5585 check_func  fork
5586 check_func  gethrtime
5587 check_func  getopt
5588 check_func  getrusage
5589 check_func  gettimeofday
5590 check_func  isatty
5591 check_func  mach_absolute_time
5592 check_func  mkstemp
5593 check_func  mmap
5594 check_func  mprotect
5595 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5596 check_func_headers time.h nanosleep ||
5597     { check_lib nanosleep time.h nanosleep -lrt && LIBRT="-lrt"; }
5598 check_func  sched_getaffinity
5599 check_func  setrlimit
5600 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5601 check_func  strerror_r
5602 check_func  sysconf
5603 check_func  sysctl
5604 check_func  usleep
5605
5606 check_func_headers conio.h kbhit
5607 check_func_headers io.h setmode
5608 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5609 check_func_headers stdlib.h getenv
5610 check_func_headers sys/stat.h lstat
5611
5612 check_func_headers windows.h GetProcessAffinityMask
5613 check_func_headers windows.h GetProcessTimes
5614 check_func_headers windows.h GetSystemTimeAsFileTime
5615 check_func_headers windows.h LoadLibrary
5616 check_func_headers windows.h MapViewOfFile
5617 check_func_headers windows.h PeekNamedPipe
5618 check_func_headers windows.h SetConsoleTextAttribute
5619 check_func_headers windows.h SetConsoleCtrlHandler
5620 check_func_headers windows.h Sleep
5621 check_func_headers windows.h VirtualAlloc
5622 check_struct windows.h "CONDITION_VARIABLE" Ptr
5623 check_func_headers glob.h glob
5624 enabled xlib &&
5625     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5626
5627 check_header AudioToolbox/AudioToolbox.h
5628 check_header d3d11.h
5629 check_header direct.h
5630 check_header dirent.h
5631 check_header dlfcn.h
5632 check_header dxva.h
5633 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5634 check_header io.h
5635 check_header libcrystalhd/libcrystalhd_if.h
5636 check_header mach/mach_time.h
5637 check_header malloc.h
5638 check_header net/udplite.h
5639 check_header poll.h
5640 check_header sys/mman.h
5641 check_header sys/param.h
5642 check_header sys/resource.h
5643 check_header sys/select.h
5644 check_header sys/time.h
5645 check_header sys/un.h
5646 check_header termios.h
5647 check_header unistd.h
5648 check_header valgrind/valgrind.h
5649 check_header VideoDecodeAcceleration/VDADecoder.h
5650 check_header VideoToolbox/VideoToolbox.h
5651 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5652 enabled videotoolbox && check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferColorPrimaries_ITU_R_2020 -framework CoreVideo
5653 check_header windows.h
5654 check_header X11/extensions/XvMClib.h
5655 check_header asm/types.h
5656
5657 # it seems there are versions of clang in some distros that try to use the
5658 # gcc headers, which explodes for stdatomic
5659 # so we also check that atomics actually work here
5660 check_builtin stdatomic_h stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0)"
5661
5662 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
5663 check_lib wincrypt "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
5664 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
5665
5666 check_lib coreservices "CoreServices/CoreServices.h" UTGetOSTypeFromString "-framework CoreServices"
5667
5668 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5669
5670 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5671 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5672 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5673 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5674 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5675
5676 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
5677 check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
5678 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
5679 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
5680 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5681 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5682 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
5683 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
5684
5685 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5686
5687 check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt
5688
5689 if ! disabled w32threads && ! enabled pthreads; then
5690     check_func_headers "windows.h process.h" _beginthreadex &&
5691         enable w32threads || disable w32threads
5692     if ! enabled w32threads && enabled winrt; then
5693         check_func_headers "windows.h" CreateThread &&
5694             enable w32threads || disable w32threads
5695     fi
5696 fi
5697
5698 # check for some common methods of building with pthread support
5699 # do this before the optional library checks as some of them require pthreads
5700 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5701     if check_lib pthreads pthread.h pthread_join   -pthread &&
5702        check_lib pthreads pthread.h pthread_create -pthread; then
5703         add_cflags -pthread
5704     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
5705          check_lib pthreads pthread.h pthread_create -pthreads; then
5706         add_cflags -pthreads
5707     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
5708          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
5709         add_cflags -ldl -pthread
5710     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
5711          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
5712         :
5713     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
5714          check_lib pthreads pthread.h pthread_create -lpthread; then
5715         :
5716     elif check_func pthread_join && check_func pthread_create; then
5717         enable pthreads
5718     fi
5719     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5720 fi
5721
5722
5723 if enabled pthreads; then
5724   check_func pthread_cancel
5725 fi
5726
5727 enabled pthreads &&
5728     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)"
5729
5730 disabled  zlib || check_lib zlib   zlib.h      zlibVersion    -lz
5731 disabled bzlib || check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
5732 disabled  lzma || check_lib lzma   lzma.h lzma_version_number -llzma
5733
5734 check_lib libm math.h sin -lm && LIBM="-lm"
5735 disabled crystalhd || check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
5736
5737 atan2f_args=2
5738 copysign_args=2
5739 hypot_args=2
5740 ldexpf_args=2
5741 powf_args=2
5742
5743 for func in $MATH_FUNCS; do
5744     eval check_mathfunc $func \${${func}_args:-1} $LIBM
5745 done
5746
5747 for func in $COMPLEX_FUNCS; do
5748     eval check_complexfunc $func \${${func}_args:-1}
5749 done
5750
5751 # these are off by default, so fail if requested and not available
5752 enabled avfoundation_indev && { check_header_objcc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
5753 enabled avfoundation_indev && { check_lib avfoundation_indev CoreGraphics/CoreGraphics.h CGGetActiveDisplayList -framework CoreGraphics ||
5754                                 check_lib avfoundation_indev ApplicationServices/ApplicationServices.h CGGetActiveDisplayList -framework ApplicationServices; }
5755 enabled cuda              && check_header cuda.h # this is not a dependency
5756 enabled cuvid             && { enabled cuda ||
5757                                die "ERROR: CUVID requires CUDA"; }
5758 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5759 enabled coreimage_filter  && { check_header_objcc QuartzCore/CoreImage.h || disable coreimage_filter; }
5760 enabled coreimagesrc_filter && { check_header_objcc QuartzCore/CoreImage.h || disable coreimagesrc_filter; }
5761 enabled decklink          && { { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; } &&
5762                                { check_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a060100" || die "ERROR: Decklink API version must be >= 10.6.1."; } }
5763 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
5764 enabled gmp               && require gmp gmp.h mpz_export -lgmp
5765 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
5766 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads &&
5767                                check_lib jni "dlfcn.h" dlopen -ldl || die "ERROR: jni not found"; }
5768 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
5769 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5770 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
5771 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
5772 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
5773 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5774                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
5775                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5776 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
5777 enabled libdc1394         && require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new
5778 enabled libfdk_aac        && { use_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5779                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5780                                  warn "using libfdk without pkg-config"; } }
5781 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"
5782 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
5783 enabled fontconfig        && enable libfontconfig
5784 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
5785 enabled libfreetype       && require_pkg_config freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
5786 enabled libfribidi        && require_pkg_config fribidi fribidi.h fribidi_version_info
5787 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
5788 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5789                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
5790                                done || die "ERROR: libgsm not found"; }
5791 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
5792 enabled libkvazaar        && require_pkg_config "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
5793 enabled libmfx            && require_pkg_config libmfx "mfx/mfxvideo.h" MFXInit
5794 enabled libmodplug        && require_pkg_config libmodplug libmodplug/modplug.h ModPlug_Load
5795 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5796 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
5797 enabled libnpp            && require libnpp npp.h nppGetLibVersion -lnppi -lnppc
5798 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5799 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5800 enabled libopencv         && { check_header opencv2/core/core_c.h &&
5801                                { use_pkg_config opencv opencv2/core/core_c.h cvCreateImageHeader ||
5802                                  require opencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
5803                                require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader; }
5804 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
5805 enabled libopenjpeg       && { { check_lib libopenjpeg openjpeg-2.1/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5806                                check_lib libopenjpeg openjpeg-2.1/openjpeg.h opj_version -lopenjp2 ||
5807                                { check_lib libopenjpeg openjpeg-2.0/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5808                                { check_lib libopenjpeg openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5809                                { check_lib libopenjpeg openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5810                                die "ERROR: libopenjpeg not found"; }
5811 enabled libopenmpt        && require_pkg_config "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create
5812 enabled libopus           && {
5813     enabled libopus_decoder && {
5814         require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
5815     }
5816     enabled libopus_encoder && {
5817         require_pkg_config opus opus_multistream.h opus_multistream_surround_encoder_create
5818     }
5819 }
5820 enabled libpulse          && require_pkg_config libpulse pulse/pulseaudio.h pa_context_new
5821 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
5822 enabled librubberband     && require_pkg_config "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new
5823 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
5824 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
5825 enabled libsmbclient      && { use_pkg_config smbclient libsmbclient.h smbc_init ||
5826                                require smbclient libsmbclient.h smbc_init -lsmbclient; }
5827 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy
5828 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr && LIBSOXR="-lsoxr"
5829 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
5830 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
5831 enabled libtesseract      && require_pkg_config tesseract tesseract/capi.h TessBaseAPICreate
5832 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
5833 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
5834                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
5835                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
5836 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
5837 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
5838 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
5839 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
5840
5841 enabled libvpx            && {
5842     enabled libvpx_vp8_decoder && {
5843         use_pkg_config "vpx >= 0.9.1" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
5844             check_lib libvpx_vp8_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
5845                 die "ERROR: libvpx decoder version must be >=0.9.1";
5846     }
5847     enabled libvpx_vp8_encoder && {
5848         use_pkg_config "vpx >= 0.9.7" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
5849             check_lib libvpx_vp8_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
5850                 die "ERROR: libvpx encoder version must be >=0.9.7";
5851     }
5852     enabled libvpx_vp9_decoder && {
5853         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
5854             check_lib libvpx_vp9_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx
5855     }
5856     enabled libvpx_vp9_encoder && {
5857         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
5858             check_lib libvpx_vp9_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx
5859     }
5860     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
5861         die "libvpx enabled but no supported decoders found"
5862     fi
5863 }
5864
5865 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
5866 enabled libwebp           && {
5867     enabled libwebp_encoder      && require_pkg_config "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
5868     enabled libwebp_anim_encoder && { use_pkg_config "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit || disable libwebp_anim_encoder; } }
5869 enabled libx264           && { use_pkg_config x264 "stdint.h x264.h" x264_encoder_encode ||
5870                                { require libx264 "stdint.h x264.h" x264_encoder_encode -lx264 &&
5871                                  warn "using libx264 without pkg-config"; } } &&
5872                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
5873                                die "ERROR: libx264 must be installed and version must be >= 0.118."; } &&
5874                              { check_cpp_condition x264.h "X264_MPEG2" &&
5875                                enable libx262; }
5876 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
5877                              { check_cpp_condition x265.h "X265_BUILD >= 68" ||
5878                                die "ERROR: libx265 version must be >= 68."; }
5879 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode -lxavs
5880 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
5881 enabled libzimg           && require_pkg_config "zimg >= 2.3.0" zimg.h zimg_get_api_version
5882 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
5883 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi &&
5884                              { check_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
5885                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
5886 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
5887 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
5888                                { ! enabled cross_compile &&
5889                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
5890                                  add_ldflags -L/opt/vc/lib/ &&
5891                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
5892                                die "ERROR: mmal not found" &&
5893                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
5894 enabled netcdf            && require_pkg_config netcdf netcdf.h nc_inq_libvers
5895 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
5896                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
5897                                die "ERROR: openal not found"; } &&
5898                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
5899                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
5900 enabled opencl            && { check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
5901                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
5902                                die "ERROR: opencl not found"; } &&
5903                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
5904                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
5905                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
5906 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
5907                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
5908                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
5909                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
5910                                die "ERROR: opengl not found."
5911                              }
5912 enabled omx_rpi           && { check_header OMX_Core.h ||
5913                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_header OMX_Core.h ; } ||
5914                                die "ERROR: OpenMAX IL headers not found"; }
5915 enabled omx               && { check_header OMX_Core.h || die "ERROR: OpenMAX IL headers not found"; }
5916 enabled openssl           && { use_pkg_config openssl openssl/ssl.h OPENSSL_init_ssl ||
5917                                use_pkg_config openssl openssl/ssl.h SSL_library_init ||
5918                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
5919                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
5920                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
5921                                die "ERROR: openssl not found"; }
5922 enabled qtkit_indev      && { check_header_objcc QTKit/QTKit.h || disable qtkit_indev; }
5923
5924 if enabled gcrypt; then
5925     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
5926     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
5927         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
5928         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
5929         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
5930             die "ERROR: gcrypt not found"
5931         add_cflags $gcrypt_cflags && add_extralibs $gcrypt_extralibs
5932     else
5933         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
5934     fi
5935 fi
5936
5937 disabled sdl && disable sdl2
5938 if ! disabled sdl2; then
5939     SDL2_CONFIG="${cross_prefix}sdl2-config"
5940     if check_pkg_config sdl2 SDL_events.h SDL_PollEvent; then
5941         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
5942         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
5943         check_func SDL_Init $sdl2_extralibs $sdl2_cflags && enable sdl2
5944     else
5945       if "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
5946         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
5947         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
5948         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
5949         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
5950         check_func SDL_Init $sdl2_extralibs $sdl2_cflags && enable sdl2
5951       fi
5952     fi
5953     if test $target_os = "mingw32"; then
5954         sdl2_extralibs="$sdl2_extralibs -mconsole"
5955     fi
5956 fi
5957 enabled sdl2 && enable sdl && add_cflags $sdl2_cflags && add_extralibs $sdl2_extralibs
5958
5959 disabled securetransport || { check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5960     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext SecItemImport" "-Wl,-framework,CoreFoundation -Wl,-framework,Security"; }
5961
5962 disabled schannel || { check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
5963                        check_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" && enable schannel && add_extralibs -lsecur32; }
5964
5965 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
5966 enabled makeinfo \
5967     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
5968     && enable makeinfo_html || disable makeinfo_html
5969 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
5970 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
5971 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
5972 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
5973
5974 check_header linux/fb.h
5975 check_header linux/videodev.h
5976 check_header linux/videodev2.h
5977 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5978
5979 check_header sys/videoio.h
5980 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5981
5982 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
5983 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
5984 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
5985 # w32api 3.12 had it defined wrong
5986 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
5987
5988 check_type "dshow.h" IBaseFilter
5989
5990 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
5991 { check_header dev/bktr/ioctl_meteor.h &&
5992   check_header dev/bktr/ioctl_bt848.h; } ||
5993 { check_header machine/ioctl_meteor.h &&
5994   check_header machine/ioctl_bt848.h; } ||
5995 { check_header dev/video/meteor/ioctl_meteor.h &&
5996   check_header dev/video/bktr/ioctl_bt848.h; } ||
5997 check_header dev/ic/bt8xx.h
5998
5999 if check_struct sys/soundcard.h audio_buf_info bytes; then
6000     enable_safe sys/soundcard.h
6001 else
6002     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
6003     #include <sys/soundcard.h>
6004     audio_buf_info abc;
6005 EOF
6006 fi
6007 check_header soundcard.h
6008
6009 enabled_any alsa_indev alsa_outdev &&
6010     check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
6011
6012 enabled jack_indev && check_lib jack jack/jack.h jack_client_open -ljack &&
6013     check_func jack_port_get_latency_range -ljack
6014
6015 enabled_any sndio_indev sndio_outdev && check_lib sndio sndio.h sio_open -lsndio
6016
6017 if enabled libcdio; then
6018     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6019     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6020     die "ERROR: No usable libcdio/cdparanoia found"
6021 fi
6022
6023 if ! disabled libxcb; then
6024     check_pkg_config "xcb >= 1.4" xcb/xcb.h xcb_connect || {
6025         enabled libxcb && die "ERROR: libxcb >= 1.4 not found";
6026     } && enable libxcb
6027
6028 if enabled libxcb; then
6029     disabled libxcb_shm || {
6030         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
6031             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
6032         } && check_header sys/shm.h && enable libxcb_shm; }
6033
6034     disabled libxcb_xfixes || {
6035         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
6036             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
6037         } && enable libxcb_xfixes; }
6038
6039     disabled libxcb_shape || {
6040         check_pkg_config xcb-shape xcb/shape.h xcb_shape_get_rectangles || {
6041             enabled libxcb_shape && die "ERROR: libxcb_shape not found";
6042         } && enable libxcb_shape; }
6043
6044     add_cflags $xcb_cflags $xcb_shm_cflags $xcb_xfixes_cflags $xcb_shape_cflags
6045     add_extralibs $xcb_extralibs $xcb_shm_extralibs $xcb_xfixes_extralibs $xcb_shape_extralibs
6046 fi
6047 fi
6048
6049 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6050
6051 enabled dxva2api_h &&
6052     check_cc <<EOF && enable dxva2api_cobj
6053 #define _WIN32_WINNT 0x0600
6054 #define COBJMACROS
6055 #include <windows.h>
6056 #include <d3d9.h>
6057 #include <dxva2api.h>
6058 int main(void) { IDirectXVideoDecoder *o = NULL; IDirectXVideoDecoder_Release(o); return 0; }
6059 EOF
6060
6061 enabled dxva2 &&
6062     check_lib dxva2_lib windows.h CoTaskMemFree -lole32
6063
6064 enabled vaapi &&
6065     check_lib vaapi va/va.h vaInitialize -lva
6066
6067 enabled vaapi &&
6068     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
6069     disable vaapi
6070
6071 enabled vaapi &&
6072     check_lib vaapi_drm "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm
6073
6074 enabled vaapi &&
6075     check_lib vaapi_x11 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 -lX11
6076
6077 enabled vdpau &&
6078     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
6079     disable vdpau
6080
6081 enabled vdpau &&
6082     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6083
6084 if enabled x86; then
6085     case $target_os in
6086         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6087             ;;
6088         *)
6089             disable cuda cuvid nvenc
6090             ;;
6091     esac
6092 else
6093     disable cuda cuvid nvenc
6094 fi
6095
6096 enabled nvenc &&
6097     check_cc -I$source_path <<EOF || disable nvenc
6098 #include "compat/nvenc/nvEncodeAPI.h"
6099 NV_ENCODE_API_FUNCTION_LIST flist;
6100 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6101 int main(void) { return 0; }
6102 EOF
6103
6104 # Funny iconv installations are not unusual, so check it after all flags have been set
6105 disabled iconv || check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6106
6107 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6108
6109 # add some useful compiler flags if supported
6110 check_cflags -Wdeclaration-after-statement
6111 check_cflags -Wall
6112 check_cflags -Wdisabled-optimization
6113 check_cflags -Wpointer-arith
6114 check_cflags -Wredundant-decls
6115 check_cflags -Wwrite-strings
6116 check_cflags -Wtype-limits
6117 check_cflags -Wundef
6118 check_cflags -Wmissing-prototypes
6119 check_cflags -Wno-pointer-to-int-cast
6120 check_cflags -Wstrict-prototypes
6121 check_cflags -Wempty-body
6122
6123 if enabled extra_warnings; then
6124     check_cflags -Wcast-qual
6125     check_cflags -Wextra
6126     check_cflags -Wpedantic
6127 fi
6128
6129 check_disable_warning(){
6130     warning_flag=-W${1#-Wno-}
6131     test_cflags $warning_flag && add_cflags $1
6132 }
6133
6134 check_disable_warning -Wno-parentheses
6135 check_disable_warning -Wno-switch
6136 check_disable_warning -Wno-format-zero-length
6137 check_disable_warning -Wno-pointer-sign
6138 check_disable_warning -Wno-unused-const-variable
6139
6140 check_disable_warning_headers(){
6141     warning_flag=-W${1#-Wno-}
6142     test_cflags $warning_flag && add_cflags_headers $1
6143 }
6144
6145 check_disable_warning_headers -Wno-deprecated-declarations
6146 check_disable_warning_headers -Wno-unused-variable
6147
6148 # add some linker flags
6149 check_ldflags -Wl,--warn-common
6150 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6151 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
6152 enabled rpath && add_ldlibflags -Wl,-rpath,$libdir
6153 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6154
6155 # add some strip flags
6156 # -wN '..@*' is more selective than -x, but not available everywhere.
6157 check_stripflags -wN \'..@*\' || check_stripflags -x
6158
6159 enabled neon_clobber_test &&
6160     check_ldflags -Wl,--wrap,avcodec_open2              \
6161                   -Wl,--wrap,avcodec_decode_audio4      \
6162                   -Wl,--wrap,avcodec_decode_video2      \
6163                   -Wl,--wrap,avcodec_decode_subtitle2   \
6164                   -Wl,--wrap,avcodec_encode_audio2      \
6165                   -Wl,--wrap,avcodec_encode_video2      \
6166                   -Wl,--wrap,avcodec_encode_subtitle    \
6167                   -Wl,--wrap,avcodec_send_packet        \
6168                   -Wl,--wrap,avcodec_receive_packet     \
6169                   -Wl,--wrap,avcodec_send_frame         \
6170                   -Wl,--wrap,avcodec_receive_frame      \
6171                   -Wl,--wrap,swr_convert                \
6172                   -Wl,--wrap,avresample_convert ||
6173     disable neon_clobber_test
6174
6175 enabled xmm_clobber_test &&
6176     check_ldflags -Wl,--wrap,avcodec_open2              \
6177                   -Wl,--wrap,avcodec_decode_audio4      \
6178                   -Wl,--wrap,avcodec_decode_video2      \
6179                   -Wl,--wrap,avcodec_decode_subtitle2   \
6180                   -Wl,--wrap,avcodec_encode_audio2      \
6181                   -Wl,--wrap,avcodec_encode_video2      \
6182                   -Wl,--wrap,avcodec_encode_subtitle    \
6183                   -Wl,--wrap,avcodec_send_packet        \
6184                   -Wl,--wrap,avcodec_receive_packet     \
6185                   -Wl,--wrap,avcodec_send_frame         \
6186                   -Wl,--wrap,avcodec_receive_frame      \
6187                   -Wl,--wrap,swr_convert                \
6188                   -Wl,--wrap,avresample_convert         \
6189                   -Wl,--wrap,sws_scale ||
6190     disable xmm_clobber_test
6191
6192 check_ld "cc" <<EOF && enable proper_dce
6193 extern const int array[512];
6194 static inline int func(void) { return array[0]; }
6195 int main(void) { return 0; }
6196 EOF
6197
6198 if enabled proper_dce; then
6199     echo "X { local: *; };" > $TMPV
6200     if test_ldflags -Wl,${version_script},$TMPV; then
6201         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6202         check_cc <<EOF && enable symver_asm_label
6203 void ff_foo(void) __asm__ ("av_foo@VERSION");
6204 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6205 EOF
6206         check_cc <<EOF && enable symver_gnu_asm
6207 __asm__(".symver ff_foo,av_foo@VERSION");
6208 void ff_foo(void) {}
6209 EOF
6210     fi
6211 fi
6212
6213 if [ -z "$optflags" ]; then
6214     if enabled small; then
6215         optflags=$cflags_size
6216     elif enabled optimizations; then
6217         optflags=$cflags_speed
6218     else
6219         optflags=$cflags_noopt
6220     fi
6221 fi
6222
6223 check_optflags(){
6224     check_cflags "$@"
6225     enabled lto && check_ldflags "$@"
6226 }
6227
6228
6229 if enabled lto; then
6230     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6231     check_cflags  -flto
6232     check_ldflags -flto $cpuflags
6233     disable inline_asm_direct_symbol_refs
6234 fi
6235
6236 check_optflags $optflags
6237 check_optflags -fno-math-errno
6238 check_optflags -fno-signed-zeros
6239
6240 enabled ftrapv && check_cflags -ftrapv
6241
6242 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6243 int x;
6244 EOF
6245
6246
6247 if enabled icc; then
6248     # Just warnings, no remarks
6249     check_cflags -w1
6250     # -wd: Disable following warnings
6251     # 144, 167, 556: -Wno-pointer-sign
6252     # 188: enumerated type mixed with another type
6253     # 1292: attribute "foo" ignored
6254     # 1419: external declaration in primary source file
6255     # 10006: ignoring unknown option -fno-signed-zeros
6256     # 10148: ignoring unknown option -Wno-parentheses
6257     # 10156: ignoring option '-W'; no argument required
6258     # 13200: No EMMS instruction before call to function
6259     # 13203: No EMMS instruction before return from function
6260     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6261     # 11030: Warning unknown option --as-needed
6262     # 10156: ignoring option '-export'; no argument required
6263     check_ldflags -wd10156,11030
6264     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6265     enable ebp_available
6266     # The test above does not test linking
6267     enabled lto && disable symver_asm_label
6268     if enabled x86_32; then
6269         icc_version=$($cc -dumpversion)
6270         test ${icc_version%%.*} -ge 11 &&
6271             check_cflags -falign-stack=maintain-16-byte ||
6272             disable aligned_stack
6273     fi
6274 elif enabled ccc; then
6275     # disable some annoying warnings
6276     add_cflags -msg_disable bitnotint
6277     add_cflags -msg_disable mixfuncvoid
6278     add_cflags -msg_disable nonstandcast
6279     add_cflags -msg_disable unsupieee
6280 elif enabled gcc; then
6281     check_optflags -fno-tree-vectorize
6282     check_cflags -Werror=format-security
6283     check_cflags -Werror=implicit-function-declaration
6284     check_cflags -Werror=missing-prototypes
6285     check_cflags -Werror=return-type
6286     check_cflags -Werror=vla
6287     check_cflags -Wformat
6288     check_cflags -fdiagnostics-color=auto
6289     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6290 elif enabled llvm_gcc; then
6291     check_cflags -mllvm -stack-alignment=16
6292 elif enabled clang; then
6293     check_cflags -mllvm -stack-alignment=16
6294     check_cflags -mstack-alignment=16
6295     check_cflags -Qunused-arguments
6296     check_cflags -Werror=implicit-function-declaration
6297     check_cflags -Werror=missing-prototypes
6298     check_cflags -Werror=return-type
6299 elif enabled cparser; then
6300     add_cflags -Wno-missing-variable-declarations
6301     add_cflags -Wno-empty-statement
6302 elif enabled armcc; then
6303     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6304     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6305     # 2523: use of inline assembly is deprecated
6306     add_cflags -W${armcc_opt},--diag_suppress=2523
6307     add_cflags -W${armcc_opt},--diag_suppress=1207
6308     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6309     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6310     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6311     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6312 elif enabled tms470; then
6313     add_cflags -pds=824 -pds=837
6314     disable inline_asm
6315 elif enabled pathscale; then
6316     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6317 elif enabled_any msvc icl; then
6318     enabled x86_32 && disable aligned_stack
6319     enabled_all x86_32 debug && add_cflags -Oy-
6320     enabled debug && add_ldflags -debug
6321     enable pragma_deprecated
6322     if enabled icl; then
6323         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6324         # (correctly) on icl 13.x.
6325         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6326             add_cflags -Qansi-alias
6327         # Some inline asm is not compilable in debug
6328         if enabled debug; then
6329             disable ebp_available
6330             disable ebx_available
6331         fi
6332     fi
6333     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6334     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
6335     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6336     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6337     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6338     # MSVC 2013 and newer can handle it fine.
6339     # If this declspec fails, force including stdlib.h before the restrict redefinition
6340     # happens in config.h.
6341     if [ $_restrict != restrict ]; then
6342         check_cc <<EOF || add_cflags -FIstdlib.h
6343 __declspec($_restrict) void* foo(int);
6344 EOF
6345     fi
6346     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6347     # Issue has been fixed in MSVC v19.00.24218.
6348     check_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6349         check_cflags -d2SSAOptimizer-
6350     # enable utf-8 source processing on VS2015 U2 and newer
6351     check_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6352         add_cflags -utf-8
6353 fi
6354
6355 for pfx in "" host_; do
6356     varname=${pfx%_}cc_type
6357     eval "type=\$$varname"
6358     if [ $type = "msvc" ]; then
6359         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6360 static inline int foo(int a) { return a; }
6361 EOF
6362     fi
6363 done
6364
6365 case $as_type in
6366     clang)
6367         add_asflags -Qunused-arguments
6368     ;;
6369 esac
6370
6371 case $ld_type in
6372     clang)
6373         check_ldflags -Qunused-arguments
6374     ;;
6375 esac
6376
6377 case $target_os in
6378     osf1)
6379         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
6380     ;;
6381 esac
6382
6383 enable frame_thread_encoder
6384
6385 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6386
6387 check_deps $CONFIG_LIST       \
6388            $CONFIG_EXTRA      \
6389            $HAVE_LIST         \
6390            $ALL_COMPONENTS    \
6391
6392 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"
6393
6394
6395 if test $target_os = "haiku"; then
6396     disable memalign
6397     disable posix_memalign
6398 fi
6399
6400 # add_dep lib dep
6401 # -> enable ${lib}_deps_${dep}
6402 # -> add $dep to ${lib}_deps only once
6403 add_dep() {
6404     lib=$1
6405     dep=$2
6406     enabled "${lib}_deps_${dep}" && return 0
6407     enable  "${lib}_deps_${dep}"
6408     prepend "${lib}_deps" $dep
6409 }
6410
6411 # merge deps lib components
6412 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
6413 merge_deps() {
6414     lib=$1
6415     shift
6416     for comp in $*; do
6417         enabled $comp || continue
6418         eval "dep=\"\$${comp}_deps\""
6419         for d in $dep; do
6420             add_dep $lib $d
6421         done
6422     done
6423 }
6424
6425 merge_deps libavfilter $FILTER_LIST
6426
6427 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6428
6429 for thread in $THREADS_LIST; do
6430     if enabled $thread; then
6431         test -n "$thread_type" &&
6432             die "ERROR: Only one thread type must be selected." ||
6433             thread_type="$thread"
6434     fi
6435 done
6436
6437 if disabled stdatomic_h; then
6438     if enabled atomics_gcc; then
6439         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6440     elif enabled atomics_win32; then
6441         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6442     elif enabled atomics_suncc; then
6443         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6444     elif enabled pthreads; then
6445         add_compat atomics/pthread/stdatomic.o
6446         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6447     else
6448         enabled threads && die "Threading is enabled, but no atomics are available"
6449         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6450     fi
6451 fi
6452
6453 # Check if requested libraries were found.
6454 for lib in $AUTODETECT_LIBS; do
6455     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6456 done
6457
6458 enabled zlib && add_cppflags -DZLIB_CONST
6459
6460 # conditional library dependencies, in linking order
6461 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6462 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6463 enabled aresample_filter    && prepend avfilter_deps "swresample"
6464 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6465 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6466 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6467 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6468 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6469 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6470 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6471 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6472 enabled pan_filter          && prepend avfilter_deps "swresample"
6473 enabled pp_filter           && prepend avfilter_deps "postproc"
6474 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6475 enabled resample_filter && prepend avfilter_deps "avresample"
6476 enabled sab_filter          && prepend avfilter_deps "swscale"
6477 enabled scale_filter    && prepend avfilter_deps "swscale"
6478 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6479 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6480 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6481 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6482 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6483 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6484 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6485 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6486 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6487
6488 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6489
6490 enabled opus_decoder    && prepend avcodec_deps "swresample"
6491
6492 expand_deps(){
6493     lib_deps=${1}_deps
6494     eval "deps=\$$lib_deps"
6495     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6496     unique $lib_deps
6497 }
6498
6499 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6500 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6501
6502 map 'expand_deps $v' $LIBRARY_LIST
6503
6504 license="LGPL version 2.1 or later"
6505 if enabled nonfree; then
6506     license="nonfree and unredistributable"
6507 elif enabled gplv3; then
6508     license="GPL version 3 or later"
6509 elif enabled lgplv3; then
6510     license="LGPL version 3 or later"
6511 elif enabled gpl; then
6512     license="GPL version 2 or later"
6513 fi
6514
6515 if test "$quiet" != "yes"; then
6516
6517 echo "install prefix            $prefix"
6518 echo "source path               $source_path"
6519 echo "C compiler                $cc"
6520 echo "C library                 $libc_type"
6521 if test "$host_cc" != "$cc"; then
6522     echo "host C compiler           $host_cc"
6523     echo "host C library            $host_libc_type"
6524 fi
6525 echo "ARCH                      $arch ($cpu)"
6526 if test "$build_suffix" != ""; then
6527     echo "build suffix              $build_suffix"
6528 fi
6529 if test "$progs_suffix" != ""; then
6530     echo "progs suffix              $progs_suffix"
6531 fi
6532 if test "$extra_version" != ""; then
6533     echo "version string suffix     $extra_version"
6534 fi
6535 echo "big-endian                ${bigendian-no}"
6536 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6537 if enabled x86; then
6538     echo "${yasmexe}                      ${yasm-no}"
6539     echo "MMX enabled               ${mmx-no}"
6540     echo "MMXEXT enabled            ${mmxext-no}"
6541     echo "3DNow! enabled            ${amd3dnow-no}"
6542     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6543     echo "SSE enabled               ${sse-no}"
6544     echo "SSSE3 enabled             ${ssse3-no}"
6545     echo "AESNI enabled             ${aesni-no}"
6546     echo "AVX enabled               ${avx-no}"
6547     echo "XOP enabled               ${xop-no}"
6548     echo "FMA3 enabled              ${fma3-no}"
6549     echo "FMA4 enabled              ${fma4-no}"
6550     echo "i686 features enabled     ${i686-no}"
6551     echo "CMOV is fast              ${fast_cmov-no}"
6552     echo "EBX available             ${ebx_available-no}"
6553     echo "EBP available             ${ebp_available-no}"
6554 fi
6555 if enabled aarch64; then
6556     echo "NEON enabled              ${neon-no}"
6557     echo "VFP enabled               ${vfp-no}"
6558 fi
6559 if enabled arm; then
6560     echo "ARMv5TE enabled           ${armv5te-no}"
6561     echo "ARMv6 enabled             ${armv6-no}"
6562     echo "ARMv6T2 enabled           ${armv6t2-no}"
6563     echo "VFP enabled               ${vfp-no}"
6564     echo "NEON enabled              ${neon-no}"
6565     echo "THUMB enabled             ${thumb-no}"
6566 fi
6567 if enabled mips; then
6568     echo "MIPS FPU enabled          ${mipsfpu-no}"
6569     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6570     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6571     echo "MIPS MSA enabled          ${msa-no}"
6572     echo "LOONGSON MMI enabled      ${mmi-no}"
6573 fi
6574 if enabled ppc; then
6575     echo "AltiVec enabled           ${altivec-no}"
6576     echo "VSX enabled               ${vsx-no}"
6577     echo "POWER8 enabled            ${power8-no}"
6578     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6579     echo "dcbzl available           ${dcbzl-no}"
6580 fi
6581 echo "debug symbols             ${debug-no}"
6582 echo "strip symbols             ${stripping-no}"
6583 echo "optimize for size         ${small-no}"
6584 echo "optimizations             ${optimizations-no}"
6585 echo "static                    ${static-no}"
6586 echo "shared                    ${shared-no}"
6587 echo "postprocessing support    ${postproc-no}"
6588 echo "network support           ${network-no}"
6589 echo "threading support         ${thread_type-no}"
6590 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6591 echo "texi2html enabled         ${texi2html-no}"
6592 echo "perl enabled              ${perl-no}"
6593 echo "pod2man enabled           ${pod2man-no}"
6594 echo "makeinfo enabled          ${makeinfo-no}"
6595 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6596 test -n "$random_seed" &&
6597     echo "random seed               ${random_seed}"
6598 echo
6599
6600 echo "External libraries:"
6601 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_in_columns
6602 echo
6603
6604 echo "External libraries providing hardware acceleration:"
6605 print_enabled '' $HWACCEL_LIBRARY_LIST | print_in_columns
6606 echo
6607
6608 echo "Libraries:"
6609 print_enabled '' $LIBRARY_LIST | print_in_columns
6610 echo
6611
6612 echo "Programs:"
6613 print_enabled '' $PROGRAM_LIST | print_in_columns
6614 echo
6615
6616 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6617     echo "Enabled ${type}s:"
6618     eval list=\$$(toupper $type)_LIST
6619     print_enabled '_*' $list | print_in_columns
6620     echo
6621 done
6622
6623 if test -n "$ignore_tests"; then
6624     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
6625     echo "Ignored FATE tests:"
6626     echo $ignore_tests | print_in_columns
6627     echo
6628 fi
6629
6630 echo "License: $license"
6631
6632 echo "Creating configuration files ..."
6633
6634 fi # test "$quiet" != "yes"
6635
6636 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6637
6638 enabled stripping || strip="echo skipping strip"
6639
6640 config_files="$TMPH ffbuild/config.mak doc/config.texi"
6641
6642 cat > ffbuild/config.mak <<EOF
6643 # Automatically generated by configure - do not modify!
6644 ifndef FFMPEG_CONFIG_MAK
6645 FFMPEG_CONFIG_MAK=1
6646 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6647 prefix=$prefix
6648 LIBDIR=\$(DESTDIR)$libdir
6649 SHLIBDIR=\$(DESTDIR)$shlibdir
6650 INCDIR=\$(DESTDIR)$incdir
6651 BINDIR=\$(DESTDIR)$bindir
6652 DATADIR=\$(DESTDIR)$datadir
6653 DOCDIR=\$(DESTDIR)$docdir
6654 MANDIR=\$(DESTDIR)$mandir
6655 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6656 INSTALL_NAME_DIR=$install_name_dir
6657 SRC_PATH=$source_path
6658 SRC_LINK=$source_link
6659 ifndef MAIN_MAKEFILE
6660 SRC_PATH:=\$(SRC_PATH:.%=..%)
6661 endif
6662 CC_IDENT=$cc_ident
6663 ARCH=$arch
6664 INTRINSICS=$intrinsics
6665 CC=$cc
6666 CXX=$cxx
6667 AS=$as
6668 OBJCC=$objcc
6669 LD=$ld
6670 DEPCC=$dep_cc
6671 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6672 DEPAS=$as
6673 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6674 YASM=$yasmexe
6675 DEPYASM=$yasmexe
6676 AR=$ar
6677 ARFLAGS=$arflags
6678 AR_O=$ar_o
6679 RANLIB=$ranlib
6680 STRIP=$strip
6681 CP=cp -p
6682 LN_S=$ln_s
6683 CPPFLAGS=$CPPFLAGS
6684 CFLAGS=$CFLAGS
6685 CXXFLAGS=$CXXFLAGS
6686 OBJCFLAGS=$OBJCFLAGS
6687 ASFLAGS=$ASFLAGS
6688 AS_C=$AS_C
6689 AS_O=$AS_O
6690 OBJCC_C=$OBJCC_C
6691 OBJCC_E=$OBJCC_E
6692 OBJCC_O=$OBJCC_O
6693 CC_C=$CC_C
6694 CC_E=$CC_E
6695 CC_O=$CC_O
6696 CXX_C=$CXX_C
6697 CXX_O=$CXX_O
6698 LD_O=$LD_O
6699 LD_LIB=$LD_LIB
6700 LD_PATH=$LD_PATH
6701 DLLTOOL=$dlltool
6702 WINDRES=$windres
6703 DEPWINDRES=$dep_cc
6704 DOXYGEN=$doxygen
6705 LDFLAGS=$LDFLAGS
6706 LDEXEFLAGS=$LDEXEFLAGS
6707 LDLIBFLAGS=$LDLIBFLAGS
6708 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
6709 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
6710 YASMFLAGS=$YASMFLAGS
6711 BUILDSUF=$build_suffix
6712 PROGSSUF=$progs_suffix
6713 FULLNAME=$FULLNAME
6714 LIBPREF=$LIBPREF
6715 LIBSUF=$LIBSUF
6716 LIBNAME=$LIBNAME
6717 SLIBPREF=$SLIBPREF
6718 SLIBSUF=$SLIBSUF
6719 EXESUF=$EXESUF
6720 EXTRA_VERSION=$extra_version
6721 CCDEP=$CCDEP
6722 CXXDEP=$CXXDEP
6723 CCDEP_FLAGS=$CCDEP_FLAGS
6724 ASDEP=$ASDEP
6725 ASDEP_FLAGS=$ASDEP_FLAGS
6726 CC_DEPFLAGS=$CC_DEPFLAGS
6727 AS_DEPFLAGS=$AS_DEPFLAGS
6728 HOSTCC=$host_cc
6729 HOSTLD=$host_ld
6730 HOSTCFLAGS=$host_cflags
6731 HOSTCPPFLAGS=$host_cppflags
6732 HOSTEXESUF=$HOSTEXESUF
6733 HOSTLDFLAGS=$host_ldflags
6734 HOSTEXTRALIBS=$host_extralibs
6735 DEPHOSTCC=$host_cc
6736 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
6737 HOSTCCDEP=$HOSTCCDEP
6738 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
6739 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
6740 HOSTCC_C=$HOSTCC_C
6741 HOSTCC_O=$HOSTCC_O
6742 HOSTLD_O=$HOSTLD_O
6743 TARGET_EXEC=$target_exec $target_exec_args
6744 TARGET_PATH=$target_path
6745 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
6746 CFLAGS-ffplay=${sdl2_cflags}
6747 CFLAGS_HEADERS=$CFLAGS_HEADERS
6748 ZLIB=$($ldflags_filter -lz)
6749 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
6750 EXTRALIBS=$extralibs
6751 COMPAT_OBJS=$compat_objs
6752 INSTALL=$install
6753 LIBTARGET=${LIBTARGET}
6754 SLIBNAME=${SLIBNAME}
6755 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
6756 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
6757 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
6758 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
6759 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
6760 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
6761 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
6762 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
6763 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
6764 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
6765 NOREDZONE_FLAGS=$noredzone_flags
6766 LIBFUZZER_PATH=$libfuzzer_path
6767 IGNORE_TESTS=$ignore_tests
6768 EOF
6769
6770 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
6771
6772 print_program_extralibs(){
6773     eval "program_extralibs=\$${1}_extralibs"
6774     eval echo "EXTRALIBS-${1}=${program_extralibs}" >> ffbuild/config.mak
6775 }
6776
6777 map 'print_program_extralibs $v' $PROGRAM_LIST
6778
6779 cat > $TMPH <<EOF
6780 /* Automatically generated by configure - do not modify! */
6781 #ifndef FFMPEG_CONFIG_H
6782 #define FFMPEG_CONFIG_H
6783 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
6784 #define FFMPEG_LICENSE "$(c_escape $license)"
6785 #define CONFIG_THIS_YEAR 2017
6786 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
6787 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
6788 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
6789 #define av_restrict $_restrict
6790 #define EXTERN_PREFIX "${extern_prefix}"
6791 #define EXTERN_ASM ${extern_prefix}
6792 #define BUILDSUF "$build_suffix"
6793 #define SLIBSUF "$SLIBSUF"
6794 #define HAVE_MMX2 HAVE_MMXEXT
6795 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
6796 EOF
6797
6798 test -n "$assert_level" &&
6799     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
6800
6801 test -n "$malloc_prefix" &&
6802     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
6803
6804 if enabled yasm; then
6805     append config_files $TMPASM
6806     printf '' >$TMPASM
6807 fi
6808
6809 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
6810
6811
6812 mkdir -p doc
6813 mkdir -p tests
6814 mkdir -p tests/api
6815 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
6816
6817 print_config ARCH_   "$config_files" $ARCH_LIST
6818 print_config HAVE_   "$config_files" $HAVE_LIST
6819 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
6820                                      $CONFIG_EXTRA      \
6821                                      $ALL_COMPONENTS    \
6822
6823 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
6824 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
6825
6826 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
6827 cp_if_changed $TMPH config.h
6828 touch ffbuild/.config
6829
6830 enabled yasm && cp_if_changed $TMPASM config.asm
6831
6832 cat > $TMPH <<EOF
6833 /* Generated by ffconf */
6834 #ifndef AVUTIL_AVCONFIG_H
6835 #define AVUTIL_AVCONFIG_H
6836 EOF
6837
6838 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
6839
6840 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
6841
6842 cp_if_changed $TMPH libavutil/avconfig.h
6843
6844 # generate the lists of enabled components
6845 print_enabled_components(){
6846     file=$1
6847     struct_name=$2
6848     name=$3
6849     shift 3
6850     echo "static const $struct_name *$name[] = {" > $TMPH
6851     for c in $*; do
6852         enabled $c && printf "    &ff_%s,\n" $c >> $TMPH
6853     done
6854     echo "    NULL };" >> $TMPH
6855     cp_if_changed $TMPH $file
6856 }
6857
6858 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
6859 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
6860
6861 if test -n "$WARNINGS"; then
6862     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
6863     enabled fatal_warnings && exit 1
6864 fi
6865
6866 # Settings for pkg-config files
6867
6868 cat > ffbuild/config.sh <<EOF
6869 # Automatically generated by configure - do not modify!
6870 shared=$shared
6871 build_suffix=$build_suffix
6872 prefix=$prefix
6873 libdir=$libdir
6874 incdir=$incdir
6875 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
6876 source_path=${source_path}
6877 LIBPREF=${LIBPREF}
6878 LIBSUF=${LIBSUF}
6879
6880 extralibs_avutil="$LIBRT $LIBM"
6881 extralibs_avcodec="$extralibs"
6882 extralibs_avformat="$extralibs"
6883 extralibs_avdevice="$extralibs"
6884 extralibs_avfilter="$extralibs"
6885 extralibs_avresample="$LIBM"
6886 extralibs_postproc=""
6887 extralibs_swscale="$LIBM"
6888 extralibs_swresample="$LIBM $LIBSOXR"
6889 EOF
6890
6891 for lib in $LIBRARY_LIST; do
6892     lib_deps="$(eval echo \$${lib}_deps)"
6893     echo ${lib}_deps=\"$lib_deps\" >> ffbuild/config.sh
6894 done