git.sesse.net Git - ffmpeg/blob - configure

   1 #!/bin/sh
   2 #
   3 # FFmpeg configure script
   4 #
   5 # Copyright (c) 2000-2002 Fabrice Bellard
   6 # Copyright (c) 2005-2008 Diego Biurrun
   7 # Copyright (c) 2005-2008 Mans Rullgard
   8 #
   9
  10 # Prevent locale nonsense from breaking basic text processing.
  11 LC_ALL=C
  12 export LC_ALL
  13
  14 # make sure we are running under a compatible shell
  15 # try to make this part work with most shells
  16
  17 try_exec(){
  18     echo "Trying shell $1"
  19     type "$1" > /dev/null 2>&1 && exec "$@"
  20 }
  21
  22 unset foo
  23 (: ${foo%%bar}) 2> /dev/null
  24 E1="$?"
  25
  26 (: ${foo?}) 2> /dev/null
  27 E2="$?"
  28
  29 if test "$E1" != 0 || test "$E2" = 0; then
  30     echo "Broken shell detected.  Trying alternatives."
  31     export FF_CONF_EXEC
  32     if test "0$FF_CONF_EXEC" -lt 1; then
  33         FF_CONF_EXEC=1
  34         try_exec bash "$0" "$@"
  35     fi
  36     if test "0$FF_CONF_EXEC" -lt 2; then
  37         FF_CONF_EXEC=2
  38         try_exec ksh "$0" "$@"
  39     fi
  40     if test "0$FF_CONF_EXEC" -lt 3; then
  41         FF_CONF_EXEC=3
  42         try_exec /usr/xpg4/bin/sh "$0" "$@"
  43     fi
  44     echo "No compatible shell script interpreter found."
  45     echo "This configure script requires a POSIX-compatible shell"
  46     echo "such as bash or ksh."
  47     echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
  48     echo "Instead, install a working POSIX-compatible shell."
  49     echo "Disabling this configure test will create a broken FFmpeg."
  50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
  51         echo "This bash version ($BASH_VERSION) is broken on your platform."
  52         echo "Upgrade to a later version if available."
  53     fi
  54     exit 1
  55 fi
  56
  57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
  58
  59 show_help(){
  60     cat <<EOF
  61 Usage: configure [options]
  62 Options: [defaults in brackets after descriptions]
  63
  64 Help options:
  65   --help                   print this message
  66   --list-decoders          show all available decoders
  67   --list-encoders          show all available encoders
  68   --list-hwaccels          show all available hardware accelerators
  69   --list-demuxers          show all available demuxers
  70   --list-muxers            show all available muxers
  71   --list-parsers           show all available parsers
  72   --list-protocols         show all available protocols
  73   --list-bsfs              show all available bitstream filters
  74   --list-indevs            show all available input devices
  75   --list-outdevs           show all available output devices
  76   --list-filters           show all available filters
  77
  78 Standard options:
  79   --logfile=FILE           log tests and output to FILE [config.log]
  80   --disable-logging        do not log configure debug information
  81   --fatal-warnings         fail if any configure warning is generated
  82   --prefix=PREFIX          install in PREFIX [$prefix]
  83   --bindir=DIR             install binaries in DIR [PREFIX/bin]
  84   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
  85   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
  86   --libdir=DIR             install libs in DIR [PREFIX/lib]
  87   --shlibdir=DIR           install shared libs in DIR [LIBDIR]
  88   --incdir=DIR             install includes in DIR [PREFIX/include]
  89   --mandir=DIR             install man page in DIR [PREFIX/share/man]
  90   --pkgconfigdir=DIR       install pkg-config files in DIR [LIBDIR/pkgconfig]
  91   --enable-rpath           use rpath to allow installing libraries in paths
  92                            not part of the dynamic linker search path
  93                            use rpath when linking programs [USE WITH CARE]
  94   --install-name-dir=DIR   Darwin directory name for installed targets
  95
  96 Licensing options:
  97   --enable-gpl             allow use of GPL code, the resulting libs
  98                            and binaries will be under GPL [no]
  99   --enable-version3        upgrade (L)GPL to version 3 [no]
 100   --enable-nonfree         allow use of nonfree code, the resulting libs
 101                            and binaries will be unredistributable [no]
 102
 103 Configuration options:
 104   --disable-static         do not build static libraries [no]
 105   --enable-shared          build shared libraries [no]
 106   --enable-small           optimize for size instead of speed
 107   --disable-runtime-cpudetect disable detecting cpu capabilities at runtime (smaller binary)
 108   --enable-gray            enable full grayscale support (slower color)
 109   --disable-swscale-alpha  disable alpha channel support in swscale
 110   --disable-all            disable building components, libraries and programs
 111   --enable-raise-major     increase major version numbers in sonames [no]
 112
 113 Program options:
 114   --disable-programs       do not build command line programs
 115   --disable-ffmpeg         disable ffmpeg build
 116   --disable-ffplay         disable ffplay build
 117   --disable-ffprobe        disable ffprobe build
 118   --disable-ffserver       disable ffserver build
 119
 120 Documentation options:
 121   --disable-doc            do not build documentation
 122   --disable-htmlpages      do not build HTML documentation pages
 123   --disable-manpages       do not build man documentation pages
 124   --disable-podpages       do not build POD documentation pages
 125   --disable-txtpages       do not build text documentation pages
 126
 127 Component options:
 128   --disable-avdevice       disable libavdevice build
 129   --disable-avcodec        disable libavcodec build
 130   --disable-avformat       disable libavformat build
 131   --disable-swresample     disable libswresample build
 132   --disable-swscale        disable libswscale build
 133   --disable-postproc       disable libpostproc build
 134   --disable-avfilter       disable libavfilter build
 135   --enable-avresample      enable libavresample build [no]
 136   --disable-pthreads       disable pthreads [autodetect]
 137   --disable-w32threads     disable Win32 threads [autodetect]
 138   --disable-os2threads     disable OS/2 threads [autodetect]
 139   --disable-network        disable network support [no]
 140   --disable-dct            disable DCT code
 141   --disable-dwt            disable DWT code
 142   --disable-error-resilience disable error resilience code
 143   --disable-lsp            disable LSP code
 144   --disable-lzo            disable LZO decoder code
 145   --disable-mdct           disable MDCT code
 146   --disable-rdft           disable RDFT code
 147   --disable-fft            disable FFT code
 148   --disable-faan           disable floating point AAN (I)DCT code
 149   --disable-pixelutils     disable pixel utils in libavutil
 150
 151 Individual component options:
 152   --disable-everything     disable all components listed below
 153   --disable-encoder=NAME   disable encoder NAME
 154   --enable-encoder=NAME    enable encoder NAME
 155   --disable-encoders       disable all encoders
 156   --disable-decoder=NAME   disable decoder NAME
 157   --enable-decoder=NAME    enable decoder NAME
 158   --disable-decoders       disable all decoders
 159   --disable-hwaccel=NAME   disable hwaccel NAME
 160   --enable-hwaccel=NAME    enable hwaccel NAME
 161   --disable-hwaccels       disable all hwaccels
 162   --disable-muxer=NAME     disable muxer NAME
 163   --enable-muxer=NAME      enable muxer NAME
 164   --disable-muxers         disable all muxers
 165   --disable-demuxer=NAME   disable demuxer NAME
 166   --enable-demuxer=NAME    enable demuxer NAME
 167   --disable-demuxers       disable all demuxers
 168   --enable-parser=NAME     enable parser NAME
 169   --disable-parser=NAME    disable parser NAME
 170   --disable-parsers        disable all parsers
 171   --enable-bsf=NAME        enable bitstream filter NAME
 172   --disable-bsf=NAME       disable bitstream filter NAME
 173   --disable-bsfs           disable all bitstream filters
 174   --enable-protocol=NAME   enable protocol NAME
 175   --disable-protocol=NAME  disable protocol NAME
 176   --disable-protocols      disable all protocols
 177   --enable-indev=NAME      enable input device NAME
 178   --disable-indev=NAME     disable input device NAME
 179   --disable-indevs         disable input devices
 180   --enable-outdev=NAME     enable output device NAME
 181   --disable-outdev=NAME    disable output device NAME
 182   --disable-outdevs        disable output devices
 183   --disable-devices        disable all devices
 184   --enable-filter=NAME     enable filter NAME
 185   --disable-filter=NAME    disable filter NAME
 186   --disable-filters        disable all filters
 187
 188 External library support:
 189
 190   Using any of the following switches will allow FFmpeg to link to the
 191   corresponding external library. All the components depending on that library
 192   will become enabled, if all their other dependencies are met and they are not
 193   explicitly disabled. E.g. --enable-libwavpack will enable linking to
 194   libwavpack and allow the libwavpack encoder to be built, unless it is
 195   specifically disabled with --disable-encoder=libwavpack.
 196
 197   Note that only the system libraries are auto-detected. All the other external
 198   libraries must be explicitly enabled.
 199
 200   Also note that the following help text describes the purpose of the libraries
 201   themselves, not all their features will necessarily be usable by FFmpeg.
 202
 203   --enable-avisynth        enable reading of AviSynth script files [no]
 204   --disable-bzlib          disable bzlib [autodetect]
 205   --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
 206   --enable-frei0r          enable frei0r video filtering [no]
 207   --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
 208                            if openssl, librtmp or gmp is not used [no]
 209   --enable-gmp             enable gmp, needed for rtmp(t)e support
 210                            if openssl or librtmp is not used [no]
 211   --enable-gnutls          enable gnutls, needed for https support
 212                            if openssl is not used [no]
 213   --disable-iconv          disable iconv [autodetect]
 214   --enable-jni             enable JNI support [no]
 215   --enable-ladspa          enable LADSPA audio filtering [no]
 216   --enable-libass          enable libass subtitles rendering,
 217                            needed for subtitles and ass filter [no]
 218   --enable-libbluray       enable BluRay reading using libbluray [no]
 219   --enable-libbs2b         enable bs2b DSP library [no]
 220   --enable-libcaca         enable textual display using libcaca [no]
 221   --enable-libcelt         enable CELT decoding via libcelt [no]
 222   --enable-libcdio         enable audio CD grabbing with libcdio [no]
 223   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 224                            and libraw1394 [no]
 225   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 226   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 227   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
 228   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
 229   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
 230   --enable-libgme          enable Game Music Emu via libgme [no]
 231   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 232   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 233   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 234   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
 235   --enable-libmodplug      enable ModPlug via libmodplug [no]
 236   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 237   --enable-libnut          enable NUT (de)muxing via libnut,
 238                            native (de)muxer exists [no]
 239   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 240   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 241   --enable-libopencv       enable video filtering via libopencv [no]
 242   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 243   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 244   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
 245   --enable-libopus         enable Opus de/encoding via libopus [no]
 246   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 247   --enable-librubberband   enable rubberband needed for rubberband filter [no]
 248   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 249   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
 250   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 251   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 252   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
 253   --enable-libsoxr         enable Include libsoxr resampling [no]
 254   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 255   --enable-libssh          enable SFTP protocol via libssh [no]
 256   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
 257   --enable-libtheora       enable Theora encoding via libtheora [no]
 258   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 259   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 260   --enable-libvidstab      enable video stabilization using vid.stab [no]
 261   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 262   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 263                            native implementation exists [no]
 264   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 265   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 266   --enable-libwebp         enable WebP encoding via libwebp [no]
 267   --enable-libx264         enable H.264 encoding via x264 [no]
 268   --enable-libx265         enable HEVC encoding via x265 [no]
 269   --enable-libxavs         enable AVS encoding via xavs [no]
 270   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
 271   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
 272   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
 273   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
 274   --enable-libxvid         enable Xvid encoding via xvidcore,
 275                            native MPEG-4/Xvid encoder exists [no]
 276   --enable-libzimg         enable z.lib, needed for zscale filter [no]
 277   --enable-libzmq          enable message passing via libzmq [no]
 278   --enable-libzvbi         enable teletext support via libzvbi [no]
 279   --disable-lzma           disable lzma [autodetect]
 280   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
 281   --enable-mediacodec      enable Android MediaCodec support [no]
 282   --enable-netcdf          enable NetCDF, needed for sofalizer filter [no]
 283   --enable-openal          enable OpenAL 1.1 capture support [no]
 284   --enable-opencl          enable OpenCL code
 285   --enable-opengl          enable OpenGL rendering [no]
 286   --enable-openssl         enable openssl, needed for https support
 287                            if gnutls is not used [no]
 288   --disable-schannel       disable SChannel SSP, needed for TLS support on
 289                            Windows if openssl and gnutls are not used [autodetect]
 290   --disable-sdl2           disable sdl2 [autodetect]
 291   --disable-securetransport disable Secure Transport, needed for TLS support
 292                            on OSX if openssl and gnutls are not used [autodetect]
 293   --enable-x11grab         enable X11 grabbing (legacy) [no]
 294   --disable-xlib           disable xlib [autodetect]
 295   --disable-zlib           disable zlib [autodetect]
 296
 297   The following libraries provide various hardware acceleration features:
 298   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
 299   --disable-cuda           disable dynamically linked Nvidia CUDA code [autodetect]
 300   --disable-cuvid          disable Nvidia CUVID support [autodetect]
 301   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
 302   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
 303   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
 304   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
 305   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
 306   --disable-nvenc          disable Nvidia video encoding code [autodetect]
 307   --enable-omx             enable OpenMAX IL code [no]
 308   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
 309   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
 310   --disable-vda            disable Apple Video Decode Acceleration code [autodetect]
 311   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
 312   --disable-videotoolbox   disable VideoToolbox code [autodetect]
 313
 314 Toolchain options:
 315   --arch=ARCH              select architecture [$arch]
 316   --cpu=CPU                select the minimum required CPU (affects
 317                            instruction selection, may crash on older CPUs)
 318   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 319   --progs-suffix=SUFFIX    program name suffix []
 320   --enable-cross-compile   assume a cross-compiler is used
 321   --sysroot=PATH           root of cross-build tree
 322   --sysinclude=PATH        location of cross-build system headers
 323   --target-os=OS           compiler targets OS [$target_os]
 324   --target-exec=CMD        command to run executables on target
 325   --target-path=DIR        path to view of build directory on target
 326   --target-samples=DIR     path to samples directory on target
 327   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 328   --toolchain=NAME         set tool defaults according to NAME
 329   --nm=NM                  use nm tool NM [$nm_default]
 330   --ar=AR                  use archive tool AR [$ar_default]
 331   --as=AS                  use assembler AS [$as_default]
 332   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
 333   --strip=STRIP            use strip tool STRIP [$strip_default]
 334   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 335   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
 336   --cc=CC                  use C compiler CC [$cc_default]
 337   --cxx=CXX                use C compiler CXX [$cxx_default]
 338   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 339   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 340   --ld=LD                  use linker LD [$ld_default]
 341   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 342   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 343   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 344   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 345   --host-cc=HOSTCC         use host C compiler HOSTCC
 346   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 347   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 348   --host-ld=HOSTLD         use host linker HOSTLD
 349   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 350   --host-libs=HLIBS        use libs HLIBS when linking for host
 351   --host-os=OS             compiler host OS [$target_os]
 352   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 353   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 354   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 355   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 356   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 357   --extra-ldlibflags=ELDFLAGS add ELDFLAGS to LDLIBFLAGS [$LDLIBFLAGS]
 358   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 359   --extra-version=STRING   version string suffix []
 360   --optflags=OPTFLAGS      override optimization-related compiler flags
 361   --build-suffix=SUFFIX    library name suffix []
 362   --enable-pic             build position-independent code
 363   --enable-thumb           compile for Thumb instruction set
 364   --enable-lto             use link-time optimization
 365   --env="ENV=override"     override the environment variables
 366
 367 Advanced options (experts only):
 368   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 369   --custom-allocator=NAME  use a supported custom allocator
 370   --disable-symver         disable symbol versioning
 371   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 372   --disable-safe-bitstream-reader
 373                            disable buffer boundary checking in bitreaders
 374                            (faster, but may crash)
 375   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
 376   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 377
 378 Optimization options (experts only):
 379   --disable-asm            disable all assembly optimizations
 380   --disable-altivec        disable AltiVec optimizations
 381   --disable-vsx            disable VSX optimizations
 382   --disable-power8         disable POWER8 optimizations
 383   --disable-amd3dnow       disable 3DNow! optimizations
 384   --disable-amd3dnowext    disable 3DNow! extended optimizations
 385   --disable-mmx            disable MMX optimizations
 386   --disable-mmxext         disable MMXEXT optimizations
 387   --disable-sse            disable SSE optimizations
 388   --disable-sse2           disable SSE2 optimizations
 389   --disable-sse3           disable SSE3 optimizations
 390   --disable-ssse3          disable SSSE3 optimizations
 391   --disable-sse4           disable SSE4 optimizations
 392   --disable-sse42          disable SSE4.2 optimizations
 393   --disable-avx            disable AVX optimizations
 394   --disable-xop            disable XOP optimizations
 395   --disable-fma3           disable FMA3 optimizations
 396   --disable-fma4           disable FMA4 optimizations
 397   --disable-avx2           disable AVX2 optimizations
 398   --disable-aesni          disable AESNI optimizations
 399   --disable-armv5te        disable armv5te optimizations
 400   --disable-armv6          disable armv6 optimizations
 401   --disable-armv6t2        disable armv6t2 optimizations
 402   --disable-vfp            disable VFP optimizations
 403   --disable-neon           disable NEON optimizations
 404   --disable-inline-asm     disable use of inline assembly
 405   --disable-yasm           disable use of nasm/yasm assembly
 406   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
 407   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 408   --disable-msa            disable MSA optimizations
 409   --disable-mipsfpu        disable floating point MIPS optimizations
 410   --disable-mmi            disable Loongson SIMD optimizations
 411   --disable-fast-unaligned consider unaligned accesses slow
 412
 413 Developer options (useful when working on FFmpeg itself):
 414   --disable-debug          disable debugging symbols
 415   --enable-debug=LEVEL     set the debug level [$debuglevel]
 416   --disable-optimizations  disable compiler optimizations
 417   --enable-extra-warnings  enable more compiler warnings
 418   --disable-stripping      disable stripping of executables and shared libraries
 419   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 420                            2 causes a slowdown at runtime.
 421   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 422   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 423                            leaks and errors, using the specified valgrind binary.
 424                            Cannot be combined with --target-exec
 425   --enable-ftrapv          Trap arithmetic overflows
 426   --samples=PATH           location of test samples for FATE, if not set use
 427                            \$FATE_SAMPLES at make invocation time.
 428   --enable-neon-clobber-test check NEON registers for clobbering (should be
 429                            used only for debugging purposes)
 430   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 431                            should be used only for debugging purposes)
 432   --enable-random          randomly enable/disable components
 433   --disable-random
 434   --enable-random=LIST     randomly enable/disable specific components or
 435   --disable-random=LIST    component groups. LIST is a comma-separated list
 436                            of NAME[:PROB] entries where NAME is a component
 437                            (group) and PROB the probability associated with
 438                            NAME (default 0.5).
 439   --random-seed=VALUE      seed value for --enable/disable-random
 440   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 441                            (only applies to --disable-optimizations builds)
 442
 443 NOTE: Object files are built at the place where configure is launched.
 444 EOF
 445   exit 0
 446 }
 447
 448 quotes='""'
 449 if test -t 1 && which tput >/dev/null 2>&1; then
 450     ncolors=$(tput colors)
 451     if test -n "$ncolors" && test $ncolors -ge 8; then
 452         bold_color=$(tput bold)
 453         warn_color=$(tput setaf 3)
 454         error_color=$(tput setaf 1)
 455         reset_color=$(tput sgr0)
 456     fi
 457     # 72 used instead of 80 since that's the default of pr
 458     ncols=$(tput cols)
 459 fi
 460 : ${ncols:=72}
 461
 462 log(){
 463     echo "$@" >> $logfile
 464 }
 465
 466 log_file(){
 467     log BEGIN $1
 468     pr -n -t $1 >> $logfile
 469     log END $1
 470 }
 471
 472 warn(){
 473     log "WARNING: $*"
 474     WARNINGS="${WARNINGS}WARNING: $*\n"
 475 }
 476
 477 die(){
 478     log "$@"
 479     echo "$error_color$bold_color$@$reset_color"
 480     cat <<EOF
 481
 482 If you think configure made a mistake, make sure you are using the latest
 483 version from Git.  If the latest version fails, report the problem to the
 484 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 485 EOF
 486     if disabled logging; then
 487         cat <<EOF
 488 Rerun configure with logging enabled (do not use --disable-logging), and
 489 include the log this produces with your report.
 490 EOF
 491     else
 492         cat <<EOF
 493 Include the log file "$logfile" produced by configure as this will help
 494 solve the problem.
 495 EOF
 496     fi
 497     exit 1
 498 }
 499
 500 # Avoid locale weirdness, besides we really just want to translate ASCII.
 501 toupper(){
 502     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 503 }
 504
 505 tolower(){
 506     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 507 }
 508
 509 c_escape(){
 510     echo "$*" | sed 's/["\\]/\\\0/g'
 511 }
 512
 513 sh_quote(){
 514     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 515     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 516     echo "$v"
 517 }
 518
 519 cleanws(){
 520     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 521 }
 522
 523 filter(){
 524     pat=$1
 525     shift
 526     for v; do
 527         eval "case $v in $pat) echo $v ;; esac"
 528     done
 529 }
 530
 531 filter_out(){
 532     pat=$1
 533     shift
 534     for v; do
 535         eval "case $v in $pat) ;; *) echo $v ;; esac"
 536     done
 537 }
 538
 539 map(){
 540     m=$1
 541     shift
 542     for v; do eval $m; done
 543 }
 544
 545 add_suffix(){
 546     suffix=$1
 547     shift
 548     for v; do echo ${v}${suffix}; done
 549 }
 550
 551 set_all(){
 552     value=$1
 553     shift
 554     for var in $*; do
 555         eval $var=$value
 556     done
 557 }
 558
 559 set_weak(){
 560     value=$1
 561     shift
 562     for var; do
 563         eval : \${$var:=$value}
 564     done
 565 }
 566
 567 sanitize_var_name(){
 568     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 569 }
 570
 571 set_safe(){
 572     var=$1
 573     shift
 574     eval $(sanitize_var_name "$var")='$*'
 575 }
 576
 577 get_safe(){
 578     eval echo \$$(sanitize_var_name "$1")
 579 }
 580
 581 pushvar(){
 582     for pvar in $*; do
 583         eval level=\${${pvar}_level:=0}
 584         eval ${pvar}_${level}="\$$pvar"
 585         eval ${pvar}_level=$(($level+1))
 586     done
 587 }
 588
 589 popvar(){
 590     for pvar in $*; do
 591         eval level=\${${pvar}_level:-0}
 592         test $level = 0 && continue
 593         eval level=$(($level-1))
 594         eval $pvar="\${${pvar}_${level}}"
 595         eval ${pvar}_level=$level
 596         eval unset ${pvar}_${level}
 597     done
 598 }
 599
 600 request(){
 601     for var in $*; do
 602         eval ${var}_requested=yes
 603         eval $var=
 604     done
 605 }
 606
 607 enable(){
 608     set_all yes $*
 609 }
 610
 611 disable(){
 612     set_all no $*
 613 }
 614
 615 enable_weak(){
 616     set_weak yes $*
 617 }
 618
 619 disable_weak(){
 620     set_weak no $*
 621 }
 622
 623 enable_safe(){
 624     for var; do
 625         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 626     done
 627 }
 628
 629 disable_safe(){
 630     for var; do
 631         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 632     done
 633 }
 634
 635 do_enable_deep(){
 636     for var; do
 637         enabled $var && continue
 638         eval sel="\$${var}_select"
 639         eval sgs="\$${var}_suggest"
 640         pushvar var sgs
 641         enable_deep $sel
 642         popvar sgs
 643         enable_deep_weak $sgs
 644         popvar var
 645     done
 646 }
 647
 648 enable_deep(){
 649     do_enable_deep $*
 650     enable $*
 651 }
 652
 653 enable_deep_weak(){
 654     for var; do
 655         disabled $var && continue
 656         pushvar var
 657         do_enable_deep $var
 658         popvar var
 659         enable_weak $var
 660     done
 661 }
 662
 663 requested(){
 664     test "${1#!}" = "$1" && op='=' || op=!=
 665     eval test "x\$${1#!}_requested" $op "xyes"
 666 }
 667
 668 enabled(){
 669     test "${1#!}" = "$1" && op='=' || op=!=
 670     eval test "x\$${1#!}" $op "xyes"
 671 }
 672
 673 disabled(){
 674     test "${1#!}" = "$1" && op='=' || op=!=
 675     eval test "x\$${1#!}" $op "xno"
 676 }
 677
 678 enabled_all(){
 679     for opt; do
 680         enabled $opt || return 1
 681     done
 682 }
 683
 684 disabled_all(){
 685     for opt; do
 686         disabled $opt || return 1
 687     done
 688 }
 689
 690 enabled_any(){
 691     for opt; do
 692         enabled $opt && return 0
 693     done
 694 }
 695
 696 disabled_any(){
 697     for opt; do
 698         disabled $opt && return 0
 699     done
 700     return 1
 701 }
 702
 703 set_default(){
 704     for opt; do
 705         eval : \${$opt:=\$${opt}_default}
 706     done
 707 }
 708
 709 is_in(){
 710     value=$1
 711     shift
 712     for var in $*; do
 713         [ $var = $value ] && return 0
 714     done
 715     return 1
 716 }
 717
 718 do_check_deps(){
 719     for cfg; do
 720         cfg="${cfg#!}"
 721         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 722         disabled ${cfg}_checking && continue
 723         enable ${cfg}_checking
 724         append allopts $cfg
 725
 726         eval dep_all="\$${cfg}_deps"
 727         eval dep_any="\$${cfg}_deps_any"
 728         eval dep_sel="\$${cfg}_select"
 729         eval dep_sgs="\$${cfg}_suggest"
 730         eval dep_ifa="\$${cfg}_if"
 731         eval dep_ifn="\$${cfg}_if_any"
 732
 733         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 734         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
 735         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 736
 737         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 738         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 739         enabled_all  $dep_all || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not all dependencies are satisfied: $dep_all"; }
 740         enabled_any  $dep_any || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not any dependency is satisfied: $dep_any"; }
 741         disabled_any $dep_sel && { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some selected dependency is unsatisfied: $dep_sel"; }
 742
 743         if enabled $cfg; then
 744             enable_deep $dep_sel
 745             enable_deep_weak $dep_sgs
 746         fi
 747
 748         disable ${cfg}_checking
 749     done
 750 }
 751
 752 check_deps(){
 753     unset allopts
 754
 755     do_check_deps "$@"
 756
 757     for cfg in $allopts; do
 758         enabled $cfg || continue
 759         eval dep_extralibs="\$${cfg}_extralibs"
 760         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
 761     done
 762 }
 763
 764 print_config(){
 765     pfx=$1
 766     files=$2
 767     shift 2
 768     map 'eval echo "$v \${$v:-no}"' "$@" |
 769     awk "BEGIN { split(\"$files\", files) }
 770         {
 771             c = \"$pfx\" toupper(\$1);
 772             v = \$2;
 773             sub(/yes/, 1, v);
 774             sub(/no/,  0, v);
 775             for (f in files) {
 776                 file = files[f];
 777                 if (file ~ /\\.h\$/) {
 778                     printf(\"#define %s %d\\n\", c, v) >>file;
 779                 } else if (file ~ /\\.asm\$/) {
 780                     printf(\"%%define %s %d\\n\", c, v) >>file;
 781                 } else if (file ~ /\\.mak\$/) {
 782                     n = -v ? \"\" : \"!\";
 783                     printf(\"%s%s=yes\\n\", n, c) >>file;
 784                 } else if (file ~ /\\.texi\$/) {
 785                     pre = -v ? \"\" : \"@c \";
 786                     yesno = \$2;
 787                     c2 = tolower(c);
 788                     gsub(/_/, \"-\", c2);
 789                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 790                 }
 791             }
 792         }"
 793 }
 794
 795 print_enabled(){
 796     suf=$1
 797     shift
 798     for v; do
 799         enabled $v && printf "%s\n" ${v%$suf}
 800     done
 801 }
 802
 803 append(){
 804     var=$1
 805     shift
 806     eval "$var=\"\$$var $*\""
 807 }
 808
 809 prepend(){
 810     var=$1
 811     shift
 812     eval "$var=\"$* \$$var\""
 813 }
 814
 815 unique(){
 816     var=$1
 817     uniq_list=""
 818     for tok in $(eval echo \$$var); do
 819         uniq_list="$(filter_out $tok $uniq_list) $tok"
 820     done
 821     eval "$var=\"${uniq_list}\""
 822 }
 823
 824 add_cppflags(){
 825     append CPPFLAGS "$@"
 826 }
 827
 828 add_cflags(){
 829     append CFLAGS $($cflags_filter "$@")
 830 }
 831
 832 add_cxxflags(){
 833     append CXXFLAGS $($cflags_filter "$@")
 834 }
 835
 836 add_asflags(){
 837     append ASFLAGS $($asflags_filter "$@")
 838 }
 839
 840 add_objcflags(){
 841     append OBJCFLAGS $($objcflags_filter "$@")
 842 }
 843
 844 add_ldflags(){
 845     append LDFLAGS $($ldflags_filter "$@")
 846 }
 847
 848 add_ldexeflags(){
 849     append LDEXEFLAGS $($ldflags_filter "$@")
 850 }
 851
 852 add_ldlibflags(){
 853     append LDLIBFLAGS $($ldflags_filter "$@")
 854 }
 855
 856 add_stripflags(){
 857     append ASMSTRIPFLAGS "$@"
 858 }
 859
 860 add_extralibs(){
 861     prepend extralibs $($ldflags_filter "$@")
 862 }
 863
 864 add_host_cppflags(){
 865     append host_cppflags "$@"
 866 }
 867
 868 add_host_cflags(){
 869     append host_cflags $($host_cflags_filter "$@")
 870 }
 871
 872 add_host_ldflags(){
 873     append host_ldflags $($host_ldflags_filter "$@")
 874 }
 875
 876 add_compat(){
 877     append compat_objs $1
 878     shift
 879     map 'add_cppflags -D$v' "$@"
 880 }
 881
 882 check_cmd(){
 883     log "$@"
 884     "$@" >> $logfile 2>&1
 885 }
 886
 887 check_stat(){
 888     log check_stat "$@"
 889     stat "$1" >> $logfile 2>&1
 890 }
 891
 892 cc_o(){
 893     eval printf '%s\\n' $CC_O
 894 }
 895
 896 cc_e(){
 897     eval printf '%s\\n' $CC_E
 898 }
 899
 900 check_cc(){
 901     log check_cc "$@"
 902     cat > $TMPC
 903     log_file $TMPC
 904     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 905 }
 906
 907 check_cxx(){
 908     log check_cxx "$@"
 909     cat > $TMPCPP
 910     log_file $TMPCPP
 911     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 912 }
 913
 914 check_objcc(){
 915     log check_objcc "$@"
 916     cat > $TMPM
 917     log_file $TMPM
 918     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
 919 }
 920
 921 check_cpp(){
 922     log check_cpp "$@"
 923     cat > $TMPC
 924     log_file $TMPC
 925     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 926 }
 927
 928 as_o(){
 929     eval printf '%s\\n' $AS_O
 930 }
 931
 932 check_as(){
 933     log check_as "$@"
 934     cat > $TMPS
 935     log_file $TMPS
 936     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 937 }
 938
 939 check_inline_asm(){
 940     log check_inline_asm "$@"
 941     name="$1"
 942     code="$2"
 943     shift 2
 944     disable $name
 945     check_cc "$@" <<EOF && enable $name
 946 void foo(void){ __asm__ volatile($code); }
 947 EOF
 948 }
 949
 950 check_inline_asm_flags(){
 951     log check_inline_asm_flags "$@"
 952     name="$1"
 953     code="$2"
 954     flags=''
 955     shift 2
 956     while [ "$1" != "" ]; do
 957       append flags $1
 958       shift
 959     done;
 960     disable $name
 961     cat > $TMPC <<EOF
 962 void foo(void){ __asm__ volatile($code); }
 963 EOF
 964     log_file $TMPC
 965     check_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
 966     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
 967 }
 968
 969 check_insn(){
 970     log check_insn "$@"
 971     check_inline_asm ${1}_inline "\"$2\""
 972     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 973 }
 974
 975 check_yasm(){
 976     log check_yasm "$@"
 977     echo "$1" > $TMPS
 978     log_file $TMPS
 979     shift 1
 980     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
 981 }
 982
 983 ld_o(){
 984     eval printf '%s\\n' $LD_O
 985 }
 986
 987 check_ld(){
 988     log check_ld "$@"
 989     type=$1
 990     shift 1
 991     flags=$(filter_out '-l*|*.so' $@)
 992     libs=$(filter '-l*|*.so' $@)
 993     check_$type $($cflags_filter $flags) || return
 994     flags=$($ldflags_filter $flags)
 995     libs=$($ldflags_filter $libs)
 996     check_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
 997 }
 998
 999 print_include(){
1000     hdr=$1
1001     test "${hdr%.h}" = "${hdr}" &&
1002         echo "#include $hdr"    ||
1003         echo "#include <$hdr>"
1004 }
1005
1006 check_code(){
1007     log check_code "$@"
1008     check=$1
1009     headers=$2
1010     code=$3
1011     shift 3
1012     {
1013         for hdr in $headers; do
1014             print_include $hdr
1015         done
1016         echo "int main(void) { $code; return 0; }"
1017     } | check_$check "$@"
1018 }
1019
1020 check_cppflags(){
1021     log check_cppflags "$@"
1022     check_cc "$@" <<EOF && append CPPFLAGS "$@"
1023 int x;
1024 EOF
1025 }
1026
1027 test_cflags(){
1028     log test_cflags "$@"
1029     set -- $($cflags_filter "$@")
1030     check_cc "$@" <<EOF
1031 int x;
1032 EOF
1033 }
1034
1035 check_cflags(){
1036     log check_cflags "$@"
1037     test_cflags "$@" && add_cflags "$@"
1038 }
1039
1040 check_cxxflags(){
1041     log check_cxxflags "$@"
1042     set -- $($cflags_filter "$@")
1043     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
1044 int x;
1045 EOF
1046 }
1047
1048 test_objcflags(){
1049     log test_cflags "$@"
1050     set -- $($cflags_filter "$@")
1051     check_objcc "$@" <<EOF
1052 int x;
1053 EOF
1054 }
1055
1056 check_objcflags(){
1057     log check_cflags "$@"
1058     test_objcflags "$@" && add_objcflags "$@"
1059 }
1060
1061 test_ldflags(){
1062     log test_ldflags "$@"
1063     check_ld "cc" "$@" <<EOF
1064 int main(void){ return 0; }
1065 EOF
1066 }
1067
1068 check_ldflags(){
1069     log check_ldflags "$@"
1070     test_ldflags "$@" && add_ldflags "$@"
1071 }
1072
1073 test_stripflags(){
1074     log test_stripflags "$@"
1075     # call check_cc to get a fresh TMPO
1076     check_cc <<EOF
1077 int main(void) { return 0; }
1078 EOF
1079     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1080 }
1081
1082 check_stripflags(){
1083     log check_stripflags "$@"
1084     test_stripflags "$@" && add_stripflags "$@"
1085 }
1086
1087 check_header(){
1088     log check_header "$@"
1089     header=$1
1090     shift
1091     disable_safe $header
1092     check_cpp "$@" <<EOF && enable_safe $header
1093 #include <$header>
1094 int x;
1095 EOF
1096 }
1097
1098 check_header_objcc(){
1099     log check_header_objcc "$@"
1100     rm -f -- "$TMPO"
1101     header=$1
1102     shift
1103     disable_safe $header
1104     {
1105        echo "#include <$header>"
1106        echo "int main(void) { return 0; }"
1107     } | check_objcc && check_stat "$TMPO" && enable_safe $headers
1108 }
1109
1110 check_func(){
1111     log check_func "$@"
1112     func=$1
1113     shift
1114     disable $func
1115     check_ld "cc" "$@" <<EOF && enable $func
1116 extern int $func();
1117 int main(void){ $func(); }
1118 EOF
1119 }
1120
1121 check_complexfunc(){
1122     log check_complexfunc "$@"
1123     func=$1
1124     narg=$2
1125     shift 2
1126     test $narg = 2 && args="f, g" || args="f * I"
1127     disable $func
1128     check_ld "cc" "$@" <<EOF && enable $func
1129 #include <complex.h>
1130 #include <math.h>
1131 float foo(complex float f, complex float g) { return $func($args); }
1132 int main(void){ return (int) foo; }
1133 EOF
1134 }
1135
1136 check_mathfunc(){
1137     log check_mathfunc "$@"
1138     func=$1
1139     narg=$2
1140     shift 2
1141     test $narg = 2 && args="f, g" || args="f"
1142     disable $func
1143     check_ld "cc" "$@" <<EOF && enable $func
1144 #include <math.h>
1145 float foo(float f, float g) { return $func($args); }
1146 int main(void){ return (int) foo; }
1147 EOF
1148 }
1149
1150 check_func_headers(){
1151     log check_func_headers "$@"
1152     headers=$1
1153     funcs=$2
1154     shift 2
1155     {
1156         for hdr in $headers; do
1157             print_include $hdr
1158         done
1159         echo "#include <stdint.h>"
1160         for func in $funcs; do
1161             echo "long check_$func(void) { return (long) $func; }"
1162         done
1163         echo "int main(void) { int ret = 0;"
1164         # LTO could optimize out the test functions without this
1165         for func in $funcs; do
1166             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1167         done
1168         echo "return ret; }"
1169     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1170 }
1171
1172 check_class_headers_cpp(){
1173     log check_class_headers_cpp "$@"
1174     headers=$1
1175     classes=$2
1176     shift 2
1177     {
1178         for hdr in $headers; do
1179             echo "#include <$hdr>"
1180         done
1181         echo "int main(void) { "
1182         i=1
1183         for class in $classes; do
1184             echo "$class obj$i;"
1185             i=$(expr $i + 1)
1186         done
1187         echo "return 0; }"
1188     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1189 }
1190
1191 check_cpp_condition(){
1192     log check_cpp_condition "$@"
1193     header=$1
1194     condition=$2
1195     shift 2
1196     check_cpp "$@" <<EOF
1197 #include <$header>
1198 #if !($condition)
1199 #error "unsatisfied condition: $condition"
1200 #endif
1201 EOF
1202 }
1203
1204 test_cflags_cc(){
1205     log test_cflags_cc "$@"
1206     flags=$1
1207     header=$2
1208     condition=$3
1209     shift 3
1210     set -- $($cflags_filter "$flags")
1211     check_cc "$@" <<EOF
1212 #include <$header>
1213 #if !($condition)
1214 #error "unsatisfied condition: $condition"
1215 #endif
1216 EOF
1217 }
1218
1219 check_lib(){
1220     log check_lib "$@"
1221     header="$1"
1222     func="$2"
1223     shift 2
1224     check_header $header && check_func $func "$@" && add_extralibs "$@"
1225 }
1226
1227 check_lib2(){
1228     log check_lib2 "$@"
1229     headers="$1"
1230     funcs="$2"
1231     shift 2
1232     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1233 }
1234
1235 check_lib_cpp(){
1236     log check_lib_cpp "$@"
1237     headers="$1"
1238     classes="$2"
1239     shift 2
1240     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1241 }
1242
1243 check_pkg_config(){
1244     log check_pkg_config "$@"
1245     pkgandversion="$1"
1246     pkg="${1%% *}"
1247     headers="$2"
1248     funcs="$3"
1249     shift 3
1250     check_cmd $pkg_config --exists --print-errors $pkgandversion || return
1251     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1252     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1253     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1254         set_safe "${pkg}_cflags" $pkg_cflags   &&
1255         set_safe "${pkg}_libs"   $pkg_libs
1256 }
1257
1258 check_exec(){
1259     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1260 }
1261
1262 check_exec_crash(){
1263     code=$(cat)
1264
1265     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1266     # are safe but may not be available everywhere.  Thus we use
1267     # raise(SIGTERM) instead.  The check is run in a subshell so we
1268     # can redirect the "Terminated" message from the shell.  SIGBUS
1269     # is not defined by standard C so it is used conditionally.
1270
1271     (check_exec "$@") >> $logfile 2>&1 <<EOF
1272 #include <signal.h>
1273 static void sighandler(int sig){
1274     raise(SIGTERM);
1275 }
1276 int foo(void){
1277     $code
1278 }
1279 int (*func_ptr)(void) = foo;
1280 int main(void){
1281     signal(SIGILL, sighandler);
1282     signal(SIGFPE, sighandler);
1283     signal(SIGSEGV, sighandler);
1284 #ifdef SIGBUS
1285     signal(SIGBUS, sighandler);
1286 #endif
1287     return func_ptr();
1288 }
1289 EOF
1290 }
1291
1292 check_type(){
1293     log check_type "$@"
1294     headers=$1
1295     type=$2
1296     shift 2
1297     disable_safe "$type"
1298     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1299 }
1300
1301 check_struct(){
1302     log check_struct "$@"
1303     headers=$1
1304     struct=$2
1305     member=$3
1306     shift 3
1307     disable_safe "${struct}_${member}"
1308     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1309         enable_safe "${struct}_${member}"
1310 }
1311
1312 check_builtin(){
1313     log check_builtin "$@"
1314     name=$1
1315     headers=$2
1316     builtin=$3
1317     shift 3
1318     disable "$name"
1319     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1320 }
1321
1322 check_compile_assert(){
1323     log check_compile_assert "$@"
1324     name=$1
1325     headers=$2
1326     condition=$3
1327     shift 3
1328     disable "$name"
1329     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1330 }
1331
1332 require(){
1333     name="$1"
1334     header="$2"
1335     func="$3"
1336     shift 3
1337     check_lib $header $func "$@" || die "ERROR: $name not found"
1338 }
1339
1340 require2(){
1341     name="$1"
1342     headers="$2"
1343     func="$3"
1344     shift 3
1345     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1346 }
1347
1348 require_cpp(){
1349     name="$1"
1350     headers="$2"
1351     classes="$3"
1352     shift 3
1353     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1354 }
1355
1356 use_pkg_config(){
1357     pkg="$1"
1358     check_pkg_config "$@" || return 1
1359     add_cflags    $(get_safe "${pkg}_cflags")
1360     add_extralibs $(get_safe "${pkg}_libs")
1361 }
1362
1363 require_pkg_config(){
1364     use_pkg_config "$@" || die "ERROR: $pkg not found using pkg-config$pkg_config_fail_message"
1365 }
1366
1367 require_libfreetype(){
1368     log require_libfreetype "$@"
1369     pkg="freetype2"
1370     check_cmd $pkg_config --exists --print-errors $pkg \
1371       || die "ERROR: $pkg not found"
1372     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1373     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1374     {
1375         echo "#include <ft2build.h>"
1376         echo "#include FT_FREETYPE_H"
1377         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1378         echo "int main(void) { return 0; }"
1379     } | check_ld "cc" $pkg_cflags $pkg_libs \
1380       && set_safe "${pkg}_cflags" $pkg_cflags \
1381       && set_safe "${pkg}_libs"   $pkg_libs \
1382       || die "ERROR: $pkg not found"
1383     add_cflags    $(get_safe "${pkg}_cflags")
1384     add_extralibs $(get_safe "${pkg}_libs")
1385 }
1386
1387 hostcc_e(){
1388     eval printf '%s\\n' $HOSTCC_E
1389 }
1390
1391 hostcc_o(){
1392     eval printf '%s\\n' $HOSTCC_O
1393 }
1394
1395 check_host_cc(){
1396     log check_host_cc "$@"
1397     cat > $TMPC
1398     log_file $TMPC
1399     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1400 }
1401
1402 check_host_cpp(){
1403     log check_host_cpp "$@"
1404     cat > $TMPC
1405     log_file $TMPC
1406     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1407 }
1408
1409 check_host_cppflags(){
1410     log check_host_cppflags "$@"
1411     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1412 int x;
1413 EOF
1414 }
1415
1416 check_host_cflags(){
1417     log check_host_cflags "$@"
1418     set -- $($host_cflags_filter "$@")
1419     check_host_cc "$@" <<EOF && append host_cflags "$@"
1420 int x;
1421 EOF
1422 }
1423
1424 check_host_cpp_condition(){
1425     log check_host_cpp_condition "$@"
1426     header=$1
1427     condition=$2
1428     shift 2
1429     check_host_cpp "$@" <<EOF
1430 #include <$header>
1431 #if !($condition)
1432 #error "unsatisfied condition: $condition"
1433 #endif
1434 EOF
1435 }
1436
1437 cp_if_changed(){
1438     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1439     mkdir -p "$(dirname $2)"
1440     $cp_f "$1" "$2"
1441 }
1442
1443 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1444 # system-dependent things.
1445
1446 AVCODEC_COMPONENTS="
1447     bsfs
1448     decoders
1449     encoders
1450     hwaccels
1451     parsers
1452 "
1453
1454 AVDEVICE_COMPONENTS="
1455     indevs
1456     outdevs
1457 "
1458 AVFILTER_COMPONENTS="
1459     filters
1460 "
1461 AVFORMAT_COMPONENTS="
1462     demuxers
1463     muxers
1464     protocols
1465 "
1466
1467 AVRESAMPLE_COMPONENTS=""
1468 AVUTIL_COMPONENTS=""
1469
1470 COMPONENT_LIST="
1471     $AVCODEC_COMPONENTS
1472     $AVDEVICE_COMPONENTS
1473     $AVFILTER_COMPONENTS
1474     $AVFORMAT_COMPONENTS
1475     $AVRESAMPLE_COMPONENTS
1476     $AVUTIL_COMPONENTS
1477 "
1478
1479 EXAMPLE_LIST="
1480     avio_dir_cmd_example
1481     avio_reading_example
1482     decoding_encoding_example
1483     demuxing_decoding_example
1484     extract_mvs_example
1485     filter_audio_example
1486     filtering_audio_example
1487     filtering_video_example
1488     http_multiclient_example
1489     metadata_example
1490     muxing_example
1491     qsvdec_example
1492     remuxing_example
1493     resampling_audio_example
1494     scaling_video_example
1495     transcode_aac_example
1496     transcoding_example
1497 "
1498 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1499     bzlib
1500     iconv
1501     libxcb
1502     libxcb_shm
1503     libxcb_shape
1504     libxcb_xfixes
1505     lzma
1506     schannel
1507     sdl
1508     sdl2
1509     securetransport
1510     xlib
1511     zlib
1512 "
1513
1514 EXTERNAL_LIBRARY_LIST="
1515     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1516     avisynth
1517     chromaprint
1518     crystalhd
1519     decklink
1520     frei0r
1521     gcrypt
1522     gmp
1523     gnutls
1524     jni
1525     ladspa
1526     libass
1527     libbluray
1528     libbs2b
1529     libcaca
1530     libcdio
1531     libcelt
1532     libdc1394
1533     libfdk_aac
1534     libflite
1535     libfontconfig
1536     libfreetype
1537     libfribidi
1538     libgme
1539     libgsm
1540     libiec61883
1541     libilbc
1542     libkvazaar
1543     libmodplug
1544     libmp3lame
1545     libnut
1546     libopencore_amrnb
1547     libopencore_amrwb
1548     libopencv
1549     libopenh264
1550     libopenjpeg
1551     libopenmpt
1552     libopus
1553     libpulse
1554     librtmp
1555     librubberband
1556     libschroedinger
1557     libshine
1558     libsmbclient
1559     libsnappy
1560     libsoxr
1561     libspeex
1562     libssh
1563     libtesseract
1564     libtheora
1565     libtwolame
1566     libv4l2
1567     libvidstab
1568     libvo_amrwbenc
1569     libvorbis
1570     libvpx
1571     libwavpack
1572     libwebp
1573     libx264
1574     libx265
1575     libxavs
1576     libxvid
1577     libzimg
1578     libzmq
1579     libzvbi
1580     mediacodec
1581     netcdf
1582     openal
1583     opencl
1584     opengl
1585     openssl
1586     videotoolbox
1587     x11grab
1588 "
1589 HWACCEL_AUTODETECT_LIBRARY_LIST="
1590     audiotoolbox
1591     cuda
1592     cuvid
1593     d3d11va
1594     dxva2
1595     nvenc
1596     vaapi
1597     vda
1598     vdpau
1599     videotoolbox_hwaccel
1600     xvmc
1601 "
1602
1603 HWACCEL_LIBRARY_LIST="
1604     $HWACCEL_AUTODETECT_LIBRARY_LIST
1605     libmfx
1606     libnpp
1607     mmal
1608     omx
1609 "
1610
1611 DOCUMENT_LIST="
1612     doc
1613     htmlpages
1614     manpages
1615     podpages
1616     txtpages
1617 "
1618
1619 FEATURE_LIST="
1620     ftrapv
1621     gray
1622     hardcoded_tables
1623     omx_rpi
1624     runtime_cpudetect
1625     safe_bitstream_reader
1626     shared
1627     small
1628     static
1629     swscale_alpha
1630 "
1631
1632 LIBRARY_LIST="
1633     avcodec
1634     avdevice
1635     avfilter
1636     avformat
1637     avresample
1638     avutil
1639     postproc
1640     swresample
1641     swscale
1642 "
1643
1644 LICENSE_LIST="
1645     gpl
1646     nonfree
1647     version3
1648 "
1649
1650 PROGRAM_LIST="
1651     ffplay
1652     ffprobe
1653     ffserver
1654     ffmpeg
1655 "
1656
1657 SUBSYSTEM_LIST="
1658     dct
1659     dwt
1660     error_resilience
1661     faan
1662     fast_unaligned
1663     fft
1664     lsp
1665     lzo
1666     mdct
1667     pixelutils
1668     network
1669     rdft
1670 "
1671
1672 CONFIG_LIST="
1673     $COMPONENT_LIST
1674     $DOCUMENT_LIST
1675     $EXAMPLE_LIST
1676     $EXTERNAL_LIBRARY_LIST
1677     $HWACCEL_LIBRARY_LIST
1678     $FEATURE_LIST
1679     $LICENSE_LIST
1680     $LIBRARY_LIST
1681     $PROGRAM_LIST
1682     $SUBSYSTEM_LIST
1683     fontconfig
1684     memalign_hack
1685     memory_poisoning
1686     neon_clobber_test
1687     pic
1688     pod2man
1689     raise_major
1690     thumb
1691     valgrind_backtrace
1692     xmm_clobber_test
1693 "
1694
1695 THREADS_LIST="
1696     pthreads
1697     os2threads
1698     w32threads
1699 "
1700
1701 ATOMICS_LIST="
1702     atomics_gcc
1703     atomics_suncc
1704     atomics_win32
1705 "
1706
1707 AUTODETECT_LIBS="
1708     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1709     $HWACCEL_AUTODETECT_LIBRARY_LIST
1710     $THREADS_LIST
1711 "
1712
1713 ARCH_LIST="
1714     aarch64
1715     alpha
1716     arm
1717     avr32
1718     avr32_ap
1719     avr32_uc
1720     bfin
1721     ia64
1722     m68k
1723     mips
1724     mips64
1725     parisc
1726     ppc
1727     ppc64
1728     s390
1729     sh4
1730     sparc
1731     sparc64
1732     tilegx
1733     tilepro
1734     tomi
1735     x86
1736     x86_32
1737     x86_64
1738 "
1739
1740 ARCH_EXT_LIST_ARM="
1741     armv5te
1742     armv6
1743     armv6t2
1744     armv8
1745     neon
1746     vfp
1747     vfpv3
1748     setend
1749 "
1750
1751 ARCH_EXT_LIST_MIPS="
1752     mipsfpu
1753     mips32r2
1754     mips32r5
1755     mips64r2
1756     mips32r6
1757     mips64r6
1758     mipsdsp
1759     mipsdspr2
1760     msa
1761 "
1762
1763 ARCH_EXT_LIST_LOONGSON="
1764     loongson2
1765     loongson3
1766     mmi
1767 "
1768
1769 ARCH_EXT_LIST_X86_SIMD="
1770     aesni
1771     amd3dnow
1772     amd3dnowext
1773     avx
1774     avx2
1775     fma3
1776     fma4
1777     mmx
1778     mmxext
1779     sse
1780     sse2
1781     sse3
1782     sse4
1783     sse42
1784     ssse3
1785     xop
1786 "
1787
1788 ARCH_EXT_LIST_PPC="
1789     altivec
1790     dcbzl
1791     ldbrx
1792     power8
1793     ppc4xx
1794     vsx
1795 "
1796
1797 ARCH_EXT_LIST_X86="
1798     $ARCH_EXT_LIST_X86_SIMD
1799     cpunop
1800     i686
1801 "
1802
1803 ARCH_EXT_LIST="
1804     $ARCH_EXT_LIST_ARM
1805     $ARCH_EXT_LIST_PPC
1806     $ARCH_EXT_LIST_X86
1807     $ARCH_EXT_LIST_MIPS
1808     $ARCH_EXT_LIST_LOONGSON
1809 "
1810
1811 ARCH_FEATURES="
1812     aligned_stack
1813     fast_64bit
1814     fast_clz
1815     fast_cmov
1816     local_aligned_8
1817     local_aligned_16
1818     local_aligned_32
1819     simd_align_16
1820 "
1821
1822 BUILTIN_LIST="
1823     atomic_cas_ptr
1824     machine_rw_barrier
1825     MemoryBarrier
1826     mm_empty
1827     rdtsc
1828     sarestart
1829     sem_timedwait
1830     sync_val_compare_and_swap
1831 "
1832 HAVE_LIST_CMDLINE="
1833     inline_asm
1834     symver
1835     yasm
1836 "
1837
1838 HAVE_LIST_PUB="
1839     bigendian
1840     fast_unaligned
1841 "
1842
1843 HEADERS_LIST="
1844     alsa_asoundlib_h
1845     altivec_h
1846     arpa_inet_h
1847     asm_types_h
1848     cdio_paranoia_h
1849     cdio_paranoia_paranoia_h
1850     cuda_h
1851     dispatch_dispatch_h
1852     dev_bktr_ioctl_bt848_h
1853     dev_bktr_ioctl_meteor_h
1854     dev_ic_bt8xx_h
1855     dev_video_bktr_ioctl_bt848_h
1856     dev_video_meteor_ioctl_meteor_h
1857     direct_h
1858     dirent_h
1859     dlfcn_h
1860     d3d11_h
1861     dxva_h
1862     ES2_gl_h
1863     gsm_h
1864     io_h
1865     mach_mach_time_h
1866     machine_ioctl_bt848_h
1867     machine_ioctl_meteor_h
1868     malloc_h
1869     opencv2_core_core_c_h
1870     openjpeg_2_1_openjpeg_h
1871     openjpeg_2_0_openjpeg_h
1872     openjpeg_1_5_openjpeg_h
1873     OpenGL_gl3_h
1874     poll_h
1875     sndio_h
1876     soundcard_h
1877     stdatomic_h
1878     sys_mman_h
1879     sys_param_h
1880     sys_resource_h
1881     sys_select_h
1882     sys_soundcard_h
1883     sys_time_h
1884     sys_un_h
1885     sys_videoio_h
1886     termios_h
1887     udplite_h
1888     unistd_h
1889     valgrind_valgrind_h
1890     windows_h
1891     winsock2_h
1892 "
1893
1894 INTRINSICS_LIST="
1895     intrinsics_neon
1896 "
1897
1898 COMPLEX_FUNCS="
1899     cabs
1900     cexp
1901 "
1902
1903 MATH_FUNCS="
1904     atanf
1905     atan2f
1906     cbrt
1907     cbrtf
1908     copysign
1909     cosf
1910     erf
1911     exp2
1912     exp2f
1913     expf
1914     hypot
1915     isfinite
1916     isinf
1917     isnan
1918     ldexpf
1919     llrint
1920     llrintf
1921     log2
1922     log2f
1923     log10f
1924     lrint
1925     lrintf
1926     powf
1927     rint
1928     round
1929     roundf
1930     sinf
1931     trunc
1932     truncf
1933 "
1934
1935 SYSTEM_FUNCS="
1936     access
1937     aligned_malloc
1938     arc4random
1939     clock_gettime
1940     closesocket
1941     CommandLineToArgvW
1942     CoTaskMemFree
1943     CryptGenRandom
1944     dlopen
1945     fcntl
1946     flt_lim
1947     fork
1948     getaddrinfo
1949     gethrtime
1950     getopt
1951     GetProcessAffinityMask
1952     GetProcessMemoryInfo
1953     GetProcessTimes
1954     getrusage
1955     GetSystemTimeAsFileTime
1956     gettimeofday
1957     glob
1958     glXGetProcAddress
1959     gmtime_r
1960     inet_aton
1961     isatty
1962     jack_port_get_latency_range
1963     kbhit
1964     LoadLibrary
1965     localtime_r
1966     lstat
1967     lzo1x_999_compress
1968     mach_absolute_time
1969     MapViewOfFile
1970     memalign
1971     mkstemp
1972     mmap
1973     mprotect
1974     nanosleep
1975     PeekNamedPipe
1976     posix_memalign
1977     pthread_cancel
1978     sched_getaffinity
1979     SetConsoleTextAttribute
1980     SetConsoleCtrlHandler
1981     setmode
1982     setrlimit
1983     Sleep
1984     strerror_r
1985     sysconf
1986     sysctl
1987     usleep
1988     UTGetOSTypeFromString
1989     VirtualAlloc
1990     wglGetProcAddress
1991 "
1992
1993 TOOLCHAIN_FEATURES="
1994     as_dn_directive
1995     as_fpu_directive
1996     as_func
1997     as_object_arch
1998     asm_mod_q
1999     attribute_may_alias
2000     attribute_packed
2001     ebp_available
2002     ebx_available
2003     gnu_as
2004     gnu_windres
2005     ibm_asm
2006     inline_asm_direct_symbol_refs
2007     inline_asm_labels
2008     inline_asm_nonlocal_labels
2009     pragma_deprecated
2010     rsync_contimeout
2011     symver_asm_label
2012     symver_gnu_asm
2013     vfp_args
2014     xform_asm
2015     xmm_clobbers
2016 "
2017
2018 TYPES_LIST="
2019     CONDITION_VARIABLE_Ptr
2020     socklen_t
2021     struct_addrinfo
2022     struct_group_source_req
2023     struct_ip_mreq_source
2024     struct_ipv6_mreq
2025     struct_msghdr_msg_flags
2026     struct_pollfd
2027     struct_rusage_ru_maxrss
2028     struct_sctp_event_subscribe
2029     struct_sockaddr_in6
2030     struct_sockaddr_sa_len
2031     struct_sockaddr_storage
2032     struct_stat_st_mtim_tv_nsec
2033     struct_v4l2_frmivalenum_discrete
2034 "
2035
2036 HAVE_LIST="
2037     $ARCH_EXT_LIST
2038     $(add_suffix _external $ARCH_EXT_LIST)
2039     $(add_suffix _inline   $ARCH_EXT_LIST)
2040     $ARCH_FEATURES
2041     $ATOMICS_LIST
2042     $BUILTIN_LIST
2043     $COMPLEX_FUNCS
2044     $HAVE_LIST_CMDLINE
2045     $HAVE_LIST_PUB
2046     $HEADERS_LIST
2047     $INTRINSICS_LIST
2048     $MATH_FUNCS
2049     $SYSTEM_FUNCS
2050     $THREADS_LIST
2051     $TOOLCHAIN_FEATURES
2052     $TYPES_LIST
2053     atomics_native
2054     dos_paths
2055     dxva2_lib
2056     dxva2api_cobj
2057     libc_msvcrt
2058     libdc1394_1
2059     libdc1394_2
2060     makeinfo
2061     makeinfo_html
2062     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2063     perl
2064     pod2man
2065     sdl2
2066     section_data_rel_ro
2067     texi2html
2068     threads
2069     vaapi_drm
2070     vaapi_x11
2071     vdpau_x11
2072     winrt
2073     xlib
2074 "
2075
2076 # options emitted with CONFIG_ prefix but not available on the command line
2077 CONFIG_EXTRA="
2078     aandcttables
2079     ac3dsp
2080     audio_frame_queue
2081     audiodsp
2082     blockdsp
2083     bswapdsp
2084     cabac
2085     dirac_parse
2086     dvprofile
2087     exif
2088     faandct
2089     faanidct
2090     fdctdsp
2091     flacdsp
2092     fmtconvert
2093     frame_thread_encoder
2094     g722dsp
2095     golomb
2096     gplv3
2097     h263dsp
2098     h264chroma
2099     h264dsp
2100     h264parse
2101     h264pred
2102     h264qpel
2103     hpeldsp
2104     huffman
2105     huffyuvdsp
2106     huffyuvencdsp
2107     idctdsp
2108     iirfilter
2109     mdct15
2110     intrax8
2111     iso_media
2112     ividsp
2113     jpegtables
2114     lgplv3
2115     libx262
2116     llauddsp
2117     llviddsp
2118     llvidencdsp
2119     lpc
2120     lzf
2121     me_cmp
2122     mpeg_er
2123     mpegaudio
2124     mpegaudiodsp
2125     mpegvideo
2126     mpegvideoenc
2127     mss34dsp
2128     pixblockdsp
2129     qpeldsp
2130     qsv
2131     qsvdec
2132     qsvenc
2133     rangecoder
2134     riffdec
2135     riffenc
2136     rtpdec
2137     rtpenc_chain
2138     rv34dsp
2139     sinewin
2140     snappy
2141     srtp
2142     startcode
2143     texturedsp
2144     texturedspenc
2145     tpeldsp
2146     vaapi_encode
2147     vc1dsp
2148     videodsp
2149     vp3dsp
2150     vp56dsp
2151     vp8dsp
2152     vt_bt2020
2153     wma_freqs
2154     wmv2dsp
2155 "
2156
2157 CMDLINE_SELECT="
2158     $ARCH_EXT_LIST
2159     $CONFIG_LIST
2160     $HAVE_LIST_CMDLINE
2161     $THREADS_LIST
2162     asm
2163     cross_compile
2164     debug
2165     extra_warnings
2166     logging
2167     lto
2168     optimizations
2169     rpath
2170     stripping
2171 "
2172
2173 PATHS_LIST="
2174     bindir
2175     datadir
2176     docdir
2177     incdir
2178     libdir
2179     mandir
2180     pkgconfigdir
2181     prefix
2182     shlibdir
2183     install_name_dir
2184 "
2185
2186 CMDLINE_SET="
2187     $PATHS_LIST
2188     ar
2189     arch
2190     as
2191     assert_level
2192     build_suffix
2193     cc
2194     objcc
2195     cpu
2196     cross_prefix
2197     custom_allocator
2198     cxx
2199     dep_cc
2200     doxygen
2201     env
2202     extra_version
2203     gas
2204     host_cc
2205     host_cflags
2206     host_ld
2207     host_ldflags
2208     host_libs
2209     host_os
2210     install
2211     ld
2212     ln_s
2213     logfile
2214     malloc_prefix
2215     nm
2216     optflags
2217     pkg_config
2218     pkg_config_flags
2219     progs_suffix
2220     random_seed
2221     ranlib
2222     samples
2223     strip
2224     sws_max_filter_size
2225     sysinclude
2226     sysroot
2227     target_exec
2228     target_os
2229     target_path
2230     target_samples
2231     tempprefix
2232     toolchain
2233     valgrind
2234     yasmexe
2235 "
2236
2237 CMDLINE_APPEND="
2238     extra_cflags
2239     extra_cxxflags
2240     extra_objcflags
2241     host_cppflags
2242 "
2243
2244 # code dependency declarations
2245
2246 # architecture extensions
2247
2248 armv5te_deps="arm"
2249 armv6_deps="arm"
2250 armv6t2_deps="arm"
2251 armv8_deps="aarch64"
2252 neon_deps_any="aarch64 arm"
2253 intrinsics_neon_deps="neon"
2254 vfp_deps_any="aarch64 arm"
2255 vfpv3_deps="vfp"
2256 setend_deps="arm"
2257
2258 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2259
2260 loongson2_deps="mips"
2261 loongson3_deps="mips"
2262 mipsfpu_deps="mips"
2263 mipsdsp_deps="mips"
2264 mipsdspr2_deps="mips"
2265 mips32r2_deps="mips"
2266 mips32r5_deps="mips"
2267 mips32r6_deps="mips"
2268 mips64r2_deps="mips"
2269 mips64r6_deps="mips"
2270 msa_deps="mipsfpu"
2271 mmi_deps="mips"
2272
2273 altivec_deps="ppc"
2274 dcbzl_deps="ppc"
2275 ldbrx_deps="ppc"
2276 ppc4xx_deps="ppc"
2277 vsx_deps="altivec"
2278 power8_deps="vsx"
2279
2280 cpunop_deps="i686"
2281 x86_64_select="i686"
2282 x86_64_suggest="fast_cmov"
2283
2284 amd3dnow_deps="mmx"
2285 amd3dnowext_deps="amd3dnow"
2286 i686_deps="x86"
2287 mmx_deps="x86"
2288 mmxext_deps="mmx"
2289 sse_deps="mmxext"
2290 sse2_deps="sse"
2291 sse3_deps="sse2"
2292 ssse3_deps="sse3"
2293 sse4_deps="ssse3"
2294 sse42_deps="sse4"
2295 aesni_deps="sse42"
2296 avx_deps="sse42"
2297 xop_deps="avx"
2298 fma3_deps="avx"
2299 fma4_deps="avx"
2300 avx2_deps="avx"
2301
2302 mmx_external_deps="yasm"
2303 mmx_inline_deps="inline_asm"
2304 mmx_suggest="mmx_external mmx_inline"
2305
2306 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2307     eval dep=\$${ext}_deps
2308     eval ${ext}_external_deps='"${dep}_external"'
2309     eval ${ext}_inline_deps='"${dep}_inline"'
2310     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2311 done
2312
2313 aligned_stack_if_any="aarch64 ppc x86"
2314 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2315 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2316 fast_unaligned_if_any="aarch64 ppc x86"
2317 simd_align_16_if_any="altivec neon sse"
2318
2319 # system capabilities
2320 symver_if_any="symver_asm_label symver_gnu_asm"
2321 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
2322
2323 # threading support
2324 atomics_gcc_if="sync_val_compare_and_swap"
2325 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2326 atomics_win32_if="MemoryBarrier"
2327 atomics_native_if_any="$ATOMICS_LIST"
2328 w32threads_deps="atomics_native"
2329 threads_if_any="$THREADS_LIST"
2330
2331 # subsystems
2332 dct_select="rdft"
2333 dirac_parse_select="golomb"
2334 error_resilience_select="me_cmp"
2335 faandct_deps="faan fdctdsp"
2336 faanidct_deps="faan idctdsp"
2337 h264dsp_select="startcode"
2338 frame_thread_encoder_deps="encoders threads"
2339 intrax8_select="blockdsp idctdsp"
2340 mdct_select="fft"
2341 mdct15_select="fft"
2342 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2343 mpeg_er_select="error_resilience"
2344 mpegaudio_select="mpegaudiodsp"
2345 mpegaudiodsp_select="dct"
2346 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2347 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2348 vc1dsp_select="h264chroma qpeldsp startcode"
2349 rdft_select="fft"
2350
2351 # decoders / encoders
2352 aac_decoder_select="mdct15 mdct sinewin"
2353 aac_fixed_decoder_select="mdct sinewin"
2354 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2355 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2356 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2357 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2358 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2359 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2360 adpcm_g722_decoder_select="g722dsp"
2361 adpcm_g722_encoder_select="g722dsp"
2362 aic_decoder_select="golomb idctdsp"
2363 alac_encoder_select="lpc"
2364 als_decoder_select="bswapdsp"
2365 amrnb_decoder_select="lsp"
2366 amrwb_decoder_select="lsp"
2367 amv_decoder_select="sp5x_decoder exif"
2368 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2369 ape_decoder_select="bswapdsp llauddsp"
2370 apng_decoder_select="zlib"
2371 apng_encoder_select="llvidencdsp zlib"
2372 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2373 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2374 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2375 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2376 atrac1_decoder_select="mdct sinewin"
2377 atrac3_decoder_select="mdct"
2378 atrac3p_decoder_select="mdct sinewin"
2379 avrn_decoder_select="exif jpegtables"
2380 bink_decoder_select="blockdsp hpeldsp"
2381 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2382 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2383 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2384 cllc_decoder_select="bswapdsp"
2385 comfortnoise_encoder_select="lpc"
2386 cook_decoder_select="audiodsp mdct sinewin"
2387 cscd_decoder_select="lzo"
2388 cscd_decoder_suggest="zlib"
2389 dca_decoder_select="mdct"
2390 dds_decoder_select="texturedsp"
2391 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2392 dnxhd_decoder_select="blockdsp idctdsp"
2393 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2394 dvvideo_decoder_select="dvprofile idctdsp"
2395 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2396 dxa_decoder_select="zlib"
2397 dxv_decoder_select="lzf texturedsp"
2398 eac3_decoder_select="ac3_decoder"
2399 eac3_encoder_select="ac3_encoder"
2400 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2401 eatgq_decoder_select="aandcttables"
2402 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2403 exr_decoder_select="zlib"
2404 ffv1_decoder_select="golomb rangecoder"
2405 ffv1_encoder_select="rangecoder"
2406 ffvhuff_decoder_select="huffyuv_decoder"
2407 ffvhuff_encoder_select="huffyuv_encoder"
2408 fic_decoder_select="golomb"
2409 flac_decoder_select="flacdsp golomb"
2410 flac_encoder_select="bswapdsp flacdsp golomb lpc"
2411 flashsv2_decoder_select="zlib"
2412 flashsv2_encoder_select="zlib"
2413 flashsv_decoder_select="zlib"
2414 flashsv_encoder_select="zlib"
2415 flv_decoder_select="h263_decoder"
2416 flv_encoder_select="h263_encoder"
2417 fourxm_decoder_select="blockdsp bswapdsp"
2418 fraps_decoder_select="bswapdsp huffman"
2419 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2420 g729_decoder_select="audiodsp"
2421 h261_decoder_select="mpegvideo"
2422 h261_encoder_select="aandcttables mpegvideoenc"
2423 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2424 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2425 h263i_decoder_select="h263_decoder"
2426 h263p_decoder_select="h263_decoder"
2427 h263p_encoder_select="h263_encoder"
2428 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2429 h264_decoder_suggest="error_resilience"
2430 hap_decoder_select="snappy texturedsp"
2431 hap_encoder_deps="libsnappy"
2432 hap_encoder_select="texturedspenc"
2433 hevc_decoder_select="bswapdsp cabac golomb videodsp"
2434 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2435 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2436 iac_decoder_select="imc_decoder"
2437 imc_decoder_select="bswapdsp fft mdct sinewin"
2438 indeo3_decoder_select="hpeldsp"
2439 indeo4_decoder_select="ividsp"
2440 indeo5_decoder_select="ividsp"
2441 interplay_video_decoder_select="hpeldsp"
2442 jpegls_decoder_select="golomb mjpeg_decoder"
2443 jpegls_encoder_select="golomb"
2444 jv_decoder_select="blockdsp"
2445 lagarith_decoder_select="llviddsp"
2446 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2447 loco_decoder_select="golomb"
2448 magicyuv_decoder_select="llviddsp"
2449 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2450 metasound_decoder_select="lsp mdct sinewin"
2451 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2452 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2453 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2454 mjpegb_decoder_select="mjpeg_decoder"
2455 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2456 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2457 mlp_decoder_select="mlp_parser"
2458 motionpixels_decoder_select="bswapdsp"
2459 mp1_decoder_select="mpegaudio"
2460 mp1float_decoder_select="mpegaudio"
2461 mp2_decoder_select="mpegaudio"
2462 mp2float_decoder_select="mpegaudio"
2463 mp3_decoder_select="mpegaudio"
2464 mp3adu_decoder_select="mpegaudio"
2465 mp3adufloat_decoder_select="mpegaudio"
2466 mp3float_decoder_select="mpegaudio"
2467 mp3on4_decoder_select="mpegaudio"
2468 mp3on4float_decoder_select="mpegaudio"
2469 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2470 mpc8_decoder_select="mpegaudiodsp"
2471 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2472 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2473 mpegvideo_decoder_select="mpegvideo"
2474 mpeg1video_decoder_select="mpegvideo"
2475 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2476 mpeg2video_decoder_select="mpegvideo"
2477 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2478 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2479 mpeg4_encoder_select="h263_encoder"
2480 msa1_decoder_select="mss34dsp"
2481 msmpeg4v1_decoder_select="h263_decoder"
2482 msmpeg4v2_decoder_select="h263_decoder"
2483 msmpeg4v2_encoder_select="h263_encoder"
2484 msmpeg4v3_decoder_select="h263_decoder"
2485 msmpeg4v3_encoder_select="h263_encoder"
2486 mss2_decoder_select="vc1_decoder mpegvideo"
2487 mts2_decoder_select="mss34dsp"
2488 mxpeg_decoder_select="mjpeg_decoder"
2489 nellymoser_decoder_select="mdct sinewin"
2490 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2491 nuv_decoder_select="idctdsp lzo"
2492 on2avc_decoder_select="mdct"
2493 opus_decoder_deps="swresample"
2494 opus_decoder_select="mdct15"
2495 opus_encoder_select="audio_frame_queue mdct15"
2496 png_decoder_select="zlib"
2497 png_encoder_select="llvidencdsp zlib"
2498 prores_decoder_select="blockdsp idctdsp"
2499 prores_encoder_select="fdctdsp"
2500 qcelp_decoder_select="lsp"
2501 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2502 ra_144_decoder_select="audiodsp"
2503 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2504 ralf_decoder_select="golomb"
2505 rawvideo_decoder_select="bswapdsp"
2506 rscc_decoder_select="zlib"
2507 rtjpeg_decoder_select="me_cmp"
2508 rv10_decoder_select="h263_decoder"
2509 rv10_encoder_select="h263_encoder"
2510 rv20_decoder_select="h263_decoder"
2511 rv20_encoder_select="h263_encoder"
2512 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2513 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2514 screenpresso_decoder_select="zlib"
2515 shorten_decoder_select="golomb bswapdsp"
2516 sipr_decoder_select="lsp"
2517 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2518 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2519 sonic_decoder_select="golomb rangecoder"
2520 sonic_encoder_select="golomb rangecoder"
2521 sonic_ls_encoder_select="golomb rangecoder"
2522 sp5x_decoder_select="mjpeg_decoder"
2523 svq1_decoder_select="hpeldsp"
2524 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2525 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2526 svq3_decoder_suggest="zlib"
2527 tak_decoder_select="audiodsp"
2528 tdsc_decoder_select="zlib mjpeg_decoder"
2529 theora_decoder_select="vp3_decoder"
2530 thp_decoder_select="mjpeg_decoder"
2531 tiff_decoder_suggest="zlib lzma"
2532 tiff_encoder_suggest="zlib"
2533 truehd_decoder_select="mlp_parser"
2534 truemotion2_decoder_select="bswapdsp"
2535 truespeech_decoder_select="bswapdsp"
2536 tscc_decoder_select="zlib"
2537 twinvq_decoder_select="mdct lsp sinewin"
2538 txd_decoder_select="texturedsp"
2539 utvideo_decoder_select="bswapdsp llviddsp"
2540 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2541 vble_decoder_select="llviddsp"
2542 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2543 vc1_qsv_decoder_deps="libmfx"
2544 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel"
2545 vc1image_decoder_select="vc1_decoder"
2546 vorbis_decoder_select="mdct"
2547 vorbis_encoder_select="mdct"
2548 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2549 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2550 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2551 vp6a_decoder_select="vp6_decoder"
2552 vp6f_decoder_select="vp6_decoder"
2553 vp7_decoder_select="h264pred videodsp vp8dsp"
2554 vp8_decoder_select="h264pred videodsp vp8dsp"
2555 vp9_decoder_select="videodsp vp9_parser"
2556 webp_decoder_select="vp8_decoder exif"
2557 wmalossless_decoder_select="llauddsp"
2558 wmapro_decoder_select="mdct sinewin wma_freqs"
2559 wmav1_decoder_select="mdct sinewin wma_freqs"
2560 wmav1_encoder_select="mdct sinewin wma_freqs"
2561 wmav2_decoder_select="mdct sinewin wma_freqs"
2562 wmav2_encoder_select="mdct sinewin wma_freqs"
2563 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2564 wmv1_decoder_select="h263_decoder"
2565 wmv1_encoder_select="h263_encoder"
2566 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2567 wmv2_encoder_select="h263_encoder wmv2dsp"
2568 wmv3_decoder_select="vc1_decoder"
2569 wmv3image_decoder_select="wmv3_decoder"
2570 xma1_decoder_select="wmapro_decoder"
2571 xma2_decoder_select="wmapro_decoder"
2572 zerocodec_decoder_select="zlib"
2573 zlib_decoder_select="zlib"
2574 zlib_encoder_select="zlib"
2575 zmbv_decoder_select="zlib"
2576 zmbv_encoder_select="zlib"
2577
2578 # platform codecs
2579 audiotoolbox_deps="AudioToolbox_AudioToolbox_h"
2580 audiotoolbox_extralibs="-framework CoreFoundation -framework AudioToolbox -framework CoreMedia"
2581
2582 # hardware accelerators
2583 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2584 cuda_deps_any="dlopen LoadLibrary"
2585 cuvid_deps="cuda"
2586 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2587 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2588 dxva2_extralibs="-luser32"
2589 vaapi_deps="va_va_h"
2590 vda_framework_deps="VideoDecodeAcceleration_VDADecoder_h"
2591 vda_framework_extralibs="-framework VideoDecodeAcceleration"
2592 vda_deps="vda_framework pthreads"
2593 vda_extralibs="-framework CoreFoundation -framework QuartzCore"
2594 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2595 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2596 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2597 xvmc_deps="X11_extensions_XvMClib_h"
2598
2599 h263_vaapi_hwaccel_deps="vaapi"
2600 h263_vaapi_hwaccel_select="h263_decoder"
2601 h263_videotoolbox_hwaccel_deps="videotoolbox"
2602 h263_videotoolbox_hwaccel_select="h263_decoder"
2603 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2604 h264_cuvid_hwaccel_deps="cuda cuvid"
2605 h264_d3d11va_hwaccel_deps="d3d11va"
2606 h264_d3d11va_hwaccel_select="h264_decoder"
2607 h264_dxva2_hwaccel_deps="dxva2"
2608 h264_dxva2_hwaccel_select="h264_decoder"
2609 h264_mediacodec_decoder_deps="mediacodec"
2610 h264_mediacodec_hwaccel_deps="mediacodec"
2611 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2612 h264_mmal_decoder_deps="mmal"
2613 h264_mmal_decoder_select="mmal"
2614 h264_mmal_hwaccel_deps="mmal"
2615 h264_omx_encoder_deps="omx"
2616 h264_qsv_hwaccel_deps="libmfx"
2617 h264_vaapi_hwaccel_deps="vaapi"
2618 h264_vaapi_hwaccel_select="h264_decoder"
2619 h264_vda_decoder_deps="vda"
2620 h264_vda_decoder_select="h264_decoder"
2621 h264_vda_hwaccel_deps="vda"
2622 h264_vda_hwaccel_select="h264_decoder"
2623 h264_vda_old_hwaccel_deps="vda"
2624 h264_vda_old_hwaccel_select="h264_decoder"
2625 h264_vdpau_decoder_deps="vdpau"
2626 h264_vdpau_decoder_select="h264_decoder"
2627 h264_vdpau_hwaccel_deps="vdpau"
2628 h264_vdpau_hwaccel_select="h264_decoder"
2629 h264_videotoolbox_hwaccel_deps="videotoolbox"
2630 h264_videotoolbox_hwaccel_select="h264_decoder"
2631 hevc_cuvid_hwaccel_deps="cuda cuvid"
2632 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2633 hevc_d3d11va_hwaccel_select="hevc_decoder"
2634 hevc_mediacodec_decoder_deps="mediacodec"
2635 hevc_mediacodec_hwaccel_deps="mediacodec"
2636 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2637 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2638 hevc_dxva2_hwaccel_select="hevc_decoder"
2639 hevc_qsv_hwaccel_deps="libmfx"
2640 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2641 hevc_vaapi_hwaccel_select="hevc_decoder"
2642 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2643 hevc_vdpau_hwaccel_select="hevc_decoder"
2644 mjpeg_cuvid_hwaccel_deps="cuda cuvid"
2645 mpeg_vdpau_decoder_deps="vdpau"
2646 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2647 mpeg_xvmc_hwaccel_deps="xvmc"
2648 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2649 mpeg1_cuvid_hwaccel_deps="cuda cuvid"
2650 mpeg1_vdpau_decoder_deps="vdpau"
2651 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2652 mpeg1_vdpau_hwaccel_deps="vdpau"
2653 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2654 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2655 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2656 mpeg1_xvmc_hwaccel_deps="xvmc"
2657 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2658 mpeg2_crystalhd_decoder_select="crystalhd"
2659 mpeg2_cuvid_hwaccel_deps="cuda cuvid"
2660 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2661 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2662 mpeg2_dxva2_hwaccel_deps="dxva2"
2663 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2664 mpeg2_mmal_decoder_deps="mmal"
2665 mpeg2_mmal_decoder_select="mmal"
2666 mpeg2_mmal_hwaccel_deps="mmal"
2667 mpeg2_qsv_hwaccel_deps="libmfx"
2668 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2669 mpeg2_vaapi_hwaccel_deps="vaapi"
2670 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2671 mpeg2_vdpau_hwaccel_deps="vdpau"
2672 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2673 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2674 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2675 mpeg2_xvmc_hwaccel_deps="xvmc"
2676 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2677 mpeg4_crystalhd_decoder_select="crystalhd"
2678 mpeg4_cuvid_hwaccel_deps="cuda cuvid"
2679 mpeg4_mediacodec_decoder_deps="mediacodec"
2680 mpeg4_mediacodec_hwaccel_deps="mediacodec"
2681 mpeg4_mmal_decoder_deps="mmal"
2682 mpeg4_mmal_decoder_select="mmal"
2683 mpeg4_mmal_hwaccel_deps="mmal"
2684 mpeg4_omx_encoder_deps="omx"
2685 mpeg4_vaapi_hwaccel_deps="vaapi"
2686 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2687 mpeg4_vdpau_decoder_deps="vdpau"
2688 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2689 mpeg4_vdpau_hwaccel_deps="vdpau"
2690 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2691 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2692 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2693 msmpeg4_crystalhd_decoder_select="crystalhd"
2694 vc1_crystalhd_decoder_select="crystalhd"
2695 vc1_cuvid_hwaccel_deps="cuda cuvid"
2696 vc1_d3d11va_hwaccel_deps="d3d11va"
2697 vc1_d3d11va_hwaccel_select="vc1_decoder"
2698 vc1_dxva2_hwaccel_deps="dxva2"
2699 vc1_dxva2_hwaccel_select="vc1_decoder"
2700 vc1_mmal_decoder_deps="mmal"
2701 vc1_mmal_decoder_select="mmal"
2702 vc1_mmal_hwaccel_deps="mmal"
2703 vc1_qsv_hwaccel_deps="libmfx"
2704 vc1_qsv_hwaccel_select="qsvdec_vc1"
2705 vc1_vaapi_hwaccel_deps="vaapi"
2706 vc1_vaapi_hwaccel_select="vc1_decoder"
2707 vc1_vdpau_decoder_deps="vdpau"
2708 vc1_vdpau_decoder_select="vc1_decoder"
2709 vc1_vdpau_hwaccel_deps="vdpau"
2710 vc1_vdpau_hwaccel_select="vc1_decoder"
2711 vp8_cuvid_hwaccel_deps="cuda cuvid"
2712 vp9_cuvid_hwaccel_deps="cuda cuvid"
2713 vp8_mediacodec_decoder_deps="mediacodec"
2714 vp8_mediacodec_hwaccel_deps="mediacodec"
2715 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2716 vp9_d3d11va_hwaccel_select="vp9_decoder"
2717 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2718 vp9_dxva2_hwaccel_select="vp9_decoder"
2719 vp9_mediacodec_decoder_deps="mediacodec"
2720 vp9_mediacodec_hwaccel_deps="mediacodec"
2721 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2722 vp9_vaapi_hwaccel_select="vp9_decoder"
2723 wmv3_crystalhd_decoder_select="crystalhd"
2724 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2725 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2726 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2727 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2728 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2729
2730 # hardware-accelerated codecs
2731 omx_deps="dlopen pthreads"
2732 omx_extralibs='$ldl'
2733 qsvdec_select="qsv"
2734 qsvenc_select="qsv"
2735 vaapi_encode_deps="vaapi"
2736
2737 hwupload_cuda_filter_deps="cuda"
2738 scale_npp_filter_deps="cuda libnpp"
2739
2740 nvenc_deps="cuda"
2741 nvenc_deps_any="dlopen LoadLibrary"
2742 nvenc_encoder_deps="nvenc"
2743 h264_cuvid_decoder_deps="cuda cuvid"
2744 h264_cuvid_decoder_select="h264_mp4toannexb_bsf h264_cuvid_hwaccel"
2745 h264_nvenc_encoder_deps="nvenc"
2746 h264_qsv_decoder_deps="libmfx"
2747 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2748 h264_qsv_encoder_deps="libmfx"
2749 h264_qsv_encoder_select="qsvenc"
2750 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2751 h264_vaapi_encoder_select="vaapi_encode golomb"
2752
2753 hevc_cuvid_decoder_deps="cuda cuvid"
2754 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf hevc_cuvid_hwaccel"
2755 hevc_nvenc_encoder_deps="nvenc"
2756 hevc_qsv_decoder_deps="libmfx"
2757 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2758 hevc_qsv_encoder_deps="libmfx"
2759 hevc_qsv_encoder_select="qsvenc"
2760 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2761 hevc_vaapi_encoder_select="vaapi_encode golomb"
2762 mjpeg_cuvid_decoder_deps="cuda cuvid"
2763 mjpeg_cuvid_decoder_select="mjpeg_cuvid_hwaccel"
2764 mpeg1_cuvid_decoder_deps="cuda cuvid"
2765 mpeg1_cuvid_decoder_select="mpeg1_cuvid_hwaccel"
2766 mpeg2_cuvid_decoder_deps="cuda cuvid"
2767 mpeg2_cuvid_decoder_select="mpeg2_cuvid_hwaccel"
2768 mpeg2_qsv_decoder_deps="libmfx"
2769 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2770 mpeg2_qsv_encoder_deps="libmfx"
2771 mpeg2_qsv_encoder_select="qsvenc"
2772 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2773 mpeg2_vaapi_encoder_select="vaapi_encode"
2774 mpeg4_cuvid_decoder_deps="cuda cuvid"
2775 mpeg4_cuvid_decoder_select="mpeg4_cuvid_hwaccel"
2776 nvenc_h264_encoder_deps="nvenc"
2777 nvenc_hevc_encoder_deps="nvenc"
2778
2779 vc1_cuvid_decoder_deps="cuda cuvid"
2780 vc1_cuvid_decoder_select="vc1_cuvid_hwaccel"
2781 vp8_cuvid_decoder_deps="cuda cuvid"
2782 vp8_cuvid_decoder_select="vp8_cuvid_hwaccel"
2783 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2784 vp8_vaapi_encoder_select="vaapi_encode"
2785 vp9_cuvid_decoder_deps="cuda cuvid"
2786 vp9_cuvid_decoder_select="vp9_cuvid_hwaccel"
2787
2788 # parsers
2789 h264_parser_select="golomb h264dsp h264parse"
2790 hevc_parser_select="golomb"
2791 mpegvideo_parser_select="mpegvideo"
2792 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2793 vc1_parser_select="vc1dsp"
2794
2795 # bitstream_filters
2796 mjpeg2jpeg_bsf_select="jpegtables"
2797
2798 # external libraries
2799 aac_at_decoder_deps="audiotoolbox"
2800 ac3_at_decoder_deps="audiotoolbox"
2801 ac3_at_decoder_select="ac3_parser"
2802 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2803 alac_at_decoder_deps="audiotoolbox"
2804 amr_nb_at_decoder_deps="audiotoolbox"
2805 avisynth_deps_any="dlopen LoadLibrary"
2806 avisynth_demuxer_deps="avisynth"
2807 avisynth_demuxer_select="riffdec"
2808 eac3_at_decoder_deps="audiotoolbox"
2809 eac3_at_decoder_select="ac3_parser"
2810 gsm_ms_at_decoder_deps="audiotoolbox"
2811 ilbc_at_decoder_deps="audiotoolbox"
2812 mp1_at_decoder_deps="audiotoolbox"
2813 mp2_at_decoder_deps="audiotoolbox"
2814 mp3_at_decoder_deps="audiotoolbox"
2815 pcm_alaw_at_decoder_deps="audiotoolbox"
2816 pcm_mulaw_at_decoder_deps="audiotoolbox"
2817 qdmc_at_decoder_deps="audiotoolbox"
2818 qdm2_at_decoder_deps="audiotoolbox"
2819 aac_at_encoder_deps="audiotoolbox"
2820 aac_at_encoder_select="audio_frame_queue"
2821 alac_at_encoder_deps="audiotoolbox"
2822 alac_at_encoder_select="audio_frame_queue"
2823 ilbc_at_encoder_deps="audiotoolbox"
2824 ilbc_at_encoder_select="audio_frame_queue"
2825 pcm_alaw_at_encoder_deps="audiotoolbox"
2826 pcm_alaw_at_encoder_select="audio_frame_queue"
2827 pcm_mulaw_at_encoder_deps="audiotoolbox"
2828 pcm_mulaw_at_encoder_select="audio_frame_queue"
2829 chromaprint_muxer_deps="chromaprint"
2830 h264_videotoolbox_encoder_deps="videotoolbox_encoder pthreads"
2831 libcelt_decoder_deps="libcelt"
2832 libfdk_aac_decoder_deps="libfdk_aac"
2833 libfdk_aac_encoder_deps="libfdk_aac"
2834 libfdk_aac_encoder_select="audio_frame_queue"
2835 libgme_demuxer_deps="libgme"
2836 libgsm_decoder_deps="libgsm"
2837 libgsm_encoder_deps="libgsm"
2838 libgsm_ms_decoder_deps="libgsm"
2839 libgsm_ms_encoder_deps="libgsm"
2840 libilbc_decoder_deps="libilbc"
2841 libilbc_encoder_deps="libilbc"
2842 libkvazaar_encoder_deps="libkvazaar"
2843 libmodplug_demuxer_deps="libmodplug"
2844 libmp3lame_encoder_deps="libmp3lame"
2845 libmp3lame_encoder_select="audio_frame_queue"
2846 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2847 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2848 libopencore_amrnb_encoder_select="audio_frame_queue"
2849 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2850 libopenh264_decoder_deps="libopenh264"
2851 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2852 libopenh264_encoder_deps="libopenh264"
2853 libopenjpeg_decoder_deps="libopenjpeg"
2854 libopenjpeg_encoder_deps="libopenjpeg"
2855 libopenmpt_demuxer_deps="libopenmpt"
2856 libopus_decoder_deps="libopus"
2857 libopus_encoder_deps="libopus"
2858 libopus_encoder_select="audio_frame_queue"
2859 libschroedinger_decoder_deps="libschroedinger"
2860 libschroedinger_encoder_deps="libschroedinger"
2861 libshine_encoder_deps="libshine"
2862 libshine_encoder_select="audio_frame_queue"
2863 libspeex_decoder_deps="libspeex"
2864 libspeex_encoder_deps="libspeex"
2865 libspeex_encoder_select="audio_frame_queue"
2866 libtheora_encoder_deps="libtheora"
2867 libtwolame_encoder_deps="libtwolame"
2868 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2869 libvorbis_decoder_deps="libvorbis"
2870 libvorbis_encoder_deps="libvorbis"
2871 libvorbis_encoder_select="audio_frame_queue"
2872 libvpx_vp8_decoder_deps="libvpx"
2873 libvpx_vp8_encoder_deps="libvpx"
2874 libvpx_vp9_decoder_deps="libvpx"
2875 libvpx_vp9_encoder_deps="libvpx"
2876 libwavpack_encoder_deps="libwavpack"
2877 libwebp_encoder_deps="libwebp"
2878 libwebp_anim_encoder_deps="libwebp"
2879 libx262_encoder_deps="libx262"
2880 libx264_encoder_deps="libx264"
2881 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2882 libx264rgb_encoder_select="libx264_encoder"
2883 libx265_encoder_deps="libx265"
2884 libxavs_encoder_deps="libxavs"
2885 libxvid_encoder_deps="libxvid"
2886 libzvbi_teletext_decoder_deps="libzvbi"
2887 videotoolbox_deps="VideoToolbox_VideoToolbox_h"
2888 videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework CoreVideo"
2889 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2890 videotoolbox_encoder_suggest="vda_framework vt_bt2020"
2891 vt_bt2020_deps="kCVImageBufferColorPrimaries_ITU_R_2020"
2892
2893 # demuxers / muxers
2894 ac3_demuxer_select="ac3_parser"
2895 aiff_muxer_select="iso_media"
2896 asf_demuxer_select="riffdec"
2897 asf_o_demuxer_select="riffdec"
2898 asf_muxer_select="riffenc"
2899 asf_stream_muxer_select="asf_muxer"
2900 avi_demuxer_select="iso_media riffdec exif"
2901 avi_muxer_select="riffenc"
2902 caf_demuxer_select="iso_media riffdec"
2903 caf_muxer_select="iso_media"
2904 dash_muxer_select="mp4_muxer"
2905 dirac_demuxer_select="dirac_parser"
2906 dts_demuxer_select="dca_parser"
2907 dtshd_demuxer_select="dca_parser"
2908 dv_demuxer_select="dvprofile"
2909 dv_muxer_select="dvprofile"
2910 dxa_demuxer_select="riffdec"
2911 eac3_demuxer_select="ac3_parser"
2912 f4v_muxer_select="mov_muxer"
2913 fifo_muxer_deps="threads"
2914 flac_demuxer_select="flac_parser"
2915 hds_muxer_select="flv_muxer"
2916 hls_muxer_select="mpegts_muxer"
2917 image2_alias_pix_demuxer_select="image2_demuxer"
2918 image2_brender_pix_demuxer_select="image2_demuxer"
2919 ipod_muxer_select="mov_muxer"
2920 ismv_muxer_select="mov_muxer"
2921 libnut_demuxer_deps="libnut"
2922 libnut_muxer_deps="libnut"
2923 matroska_audio_muxer_select="matroska_muxer"
2924 matroska_demuxer_select="iso_media riffdec"
2925 matroska_demuxer_suggest="bzlib lzo zlib"
2926 matroska_muxer_select="iso_media riffenc"
2927 mmf_muxer_select="riffenc"
2928 mov_demuxer_select="iso_media riffdec"
2929 mov_demuxer_suggest="zlib"
2930 mov_muxer_select="iso_media riffenc rtpenc_chain"
2931 mp3_demuxer_select="mpegaudio_parser"
2932 mp4_muxer_select="mov_muxer"
2933 mpegts_demuxer_select="iso_media"
2934 mpegts_muxer_select="adts_muxer latm_muxer"
2935 mpegtsraw_demuxer_select="mpegts_demuxer"
2936 mxf_d10_muxer_select="mxf_muxer"
2937 mxf_opatom_muxer_select="mxf_muxer"
2938 nut_muxer_select="riffenc"
2939 nuv_demuxer_select="riffdec"
2940 oga_muxer_select="ogg_muxer"
2941 ogg_demuxer_select="dirac_parse"
2942 ogv_muxer_select="ogg_muxer"
2943 opus_muxer_select="ogg_muxer"
2944 psp_muxer_select="mov_muxer"
2945 rtp_demuxer_select="sdp_demuxer"
2946 rtp_muxer_select="golomb"
2947 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2948 rtsp_demuxer_select="http_protocol rtpdec"
2949 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2950 sap_demuxer_select="sdp_demuxer"
2951 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2952 sdp_demuxer_select="rtpdec"
2953 smoothstreaming_muxer_select="ismv_muxer"
2954 spdif_muxer_select="aac_parser"
2955 spx_muxer_select="ogg_muxer"
2956 swf_demuxer_suggest="zlib"
2957 tak_demuxer_select="tak_parser"
2958 tg2_muxer_select="mov_muxer"
2959 tgp_muxer_select="mov_muxer"
2960 vobsub_demuxer_select="mpegps_demuxer"
2961 w64_demuxer_select="wav_demuxer"
2962 w64_muxer_select="wav_muxer"
2963 wav_demuxer_select="riffdec"
2964 wav_muxer_select="riffenc"
2965 webm_muxer_select="iso_media riffenc"
2966 webm_dash_manifest_demuxer_select="matroska_demuxer"
2967 wtv_demuxer_select="mpegts_demuxer riffdec"
2968 wtv_muxer_select="mpegts_muxer riffenc"
2969 xmv_demuxer_select="riffdec"
2970 xwma_demuxer_select="riffdec"
2971
2972 # indevs / outdevs
2973 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2974 alsa_outdev_deps="alsa_asoundlib_h"
2975 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2976 avfoundation_indev_select="avfoundation"
2977 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2978 caca_outdev_deps="libcaca"
2979 decklink_indev_deps="decklink pthreads"
2980 decklink_indev_extralibs="-lstdc++"
2981 decklink_outdev_deps="decklink pthreads"
2982 decklink_outdev_extralibs="-lstdc++"
2983 dshow_indev_deps="IBaseFilter"
2984 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
2985 dv1394_indev_deps="dv1394"
2986 dv1394_indev_select="dv_demuxer"
2987 fbdev_indev_deps="linux_fb_h"
2988 fbdev_outdev_deps="linux_fb_h"
2989 gdigrab_indev_deps="CreateDIBSection"
2990 gdigrab_indev_extralibs="-lgdi32"
2991 gdigrab_indev_select="bmp_decoder"
2992 iec61883_indev_deps="libiec61883"
2993 jack_indev_deps="jack_jack_h"
2994 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2995 lavfi_indev_deps="avfilter"
2996 libcdio_indev_deps="libcdio"
2997 libdc1394_indev_deps="libdc1394"
2998 libv4l2_indev_deps="libv4l2"
2999 openal_indev_deps="openal"
3000 opengl_outdev_deps="opengl"
3001 oss_indev_deps_any="soundcard_h sys_soundcard_h"
3002 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
3003 pulse_indev_deps="libpulse"
3004 pulse_outdev_deps="libpulse"
3005 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
3006 qtkit_indev_select="qtkit"
3007 sdl2_outdev_deps="sdl2"
3008 sndio_indev_deps="sndio_h"
3009 sndio_outdev_deps="sndio_h"
3010 v4l_indev_deps="linux_videodev_h"
3011 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3012 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3013 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
3014 vfwcap_indev_extralibs="-lavicap32"
3015 x11grab_indev_deps="x11grab"
3016 x11grab_xcb_indev_deps="libxcb"
3017 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3018 xv_outdev_extralibs="-lXv -lX11 -lXext"
3019
3020 # protocols
3021 async_protocol_deps="threads"
3022 bluray_protocol_deps="libbluray"
3023 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
3024 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3025 ffrtmpcrypt_protocol_select="tcp_protocol"
3026 ffrtmphttp_protocol_deps="!librtmp_protocol"
3027 ffrtmphttp_protocol_select="http_protocol"
3028 ftp_protocol_select="tcp_protocol"
3029 gopher_protocol_select="network"
3030 http_protocol_select="tcp_protocol"
3031 httpproxy_protocol_select="tcp_protocol"
3032 https_protocol_select="tls_protocol"
3033 icecast_protocol_select="http_protocol"
3034 librtmp_protocol_deps="librtmp"
3035 librtmpe_protocol_deps="librtmp"
3036 librtmps_protocol_deps="librtmp"
3037 librtmpt_protocol_deps="librtmp"
3038 librtmpte_protocol_deps="librtmp"
3039 libsmbclient_protocol_deps="libsmbclient gplv3"
3040 libssh_protocol_deps="libssh"
3041 mmsh_protocol_select="http_protocol"
3042 mmst_protocol_select="network"
3043 rtmp_protocol_deps="!librtmp_protocol"
3044 rtmp_protocol_select="tcp_protocol"
3045 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3046 rtmps_protocol_deps="!librtmp_protocol"
3047 rtmps_protocol_select="tls_protocol"
3048 rtmpt_protocol_select="ffrtmphttp_protocol"
3049 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3050 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3051 rtp_protocol_select="udp_protocol"
3052 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3053 sctp_protocol_select="network"
3054 srtp_protocol_select="rtp_protocol srtp"
3055 tcp_protocol_select="network"
3056 tls_gnutls_protocol_deps="gnutls !tls_schannel_protocol !tls_securetransport_protocol"
3057 tls_gnutls_protocol_select="tcp_protocol"
3058 tls_openssl_protocol_deps="openssl !tls_schannel_protocol !tls_securetransport_protocol !tls_gnutls_protocol"
3059 tls_openssl_protocol_select="tcp_protocol"
3060 tls_schannel_protocol_deps="schannel"
3061 tls_schannel_protocol_select="tcp_protocol"
3062 tls_securetransport_protocol_deps="securetransport"
3063 tls_securetransport_protocol_select="tcp_protocol"
3064 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
3065 udp_protocol_select="network"
3066 udplite_protocol_select="network"
3067 unix_protocol_deps="sys_un_h"
3068 unix_protocol_select="network"
3069
3070 # filters
3071 afftfilt_filter_deps="avcodec"
3072 afftfilt_filter_select="fft"
3073 amovie_filter_deps="avcodec avformat"
3074 aresample_filter_deps="swresample"
3075 ass_filter_deps="libass"
3076 asyncts_filter_deps="avresample"
3077 atempo_filter_deps="avcodec"
3078 atempo_filter_select="rdft"
3079 azmq_filter_deps="libzmq"
3080 blackframe_filter_deps="gpl"
3081 boxblur_filter_deps="gpl"
3082 bs2b_filter_deps="libbs2b"
3083 colormatrix_filter_deps="gpl"
3084 cover_rect_filter_deps="avcodec avformat gpl"
3085 cropdetect_filter_deps="gpl"
3086 deinterlace_qsv_filter_deps="libmfx"
3087 deinterlace_vaapi_filter_deps="vaapi"
3088 delogo_filter_deps="gpl"
3089 deshake_filter_select="pixelutils"
3090 drawtext_filter_deps="libfreetype"
3091 eq_filter_deps="gpl"
3092 fftfilt_filter_deps="avcodec"
3093 fftfilt_filter_select="rdft"
3094 find_rect_filter_deps="avcodec avformat gpl"
3095 firequalizer_filter_deps="avcodec"
3096 firequalizer_filter_select="rdft"
3097 flite_filter_deps="libflite"
3098 framerate_filter_select="pixelutils"
3099 frei0r_filter_deps="frei0r dlopen"
3100 frei0r_src_filter_deps="frei0r dlopen"
3101 fspp_filter_deps="gpl"
3102 geq_filter_deps="gpl"
3103 histeq_filter_deps="gpl"
3104 hqdn3d_filter_deps="gpl"
3105 interlace_filter_deps="gpl"
3106 kerndeint_filter_deps="gpl"
3107 ladspa_filter_deps="ladspa dlopen"
3108 mcdeint_filter_deps="avcodec gpl"
3109 movie_filter_deps="avcodec avformat"
3110 mpdecimate_filter_deps="gpl"
3111 mpdecimate_filter_select="pixelutils"
3112 mptestsrc_filter_deps="gpl"
3113 negate_filter_deps="lut_filter"
3114 nnedi_filter_deps="gpl"
3115 ocr_filter_deps="libtesseract"
3116 ocv_filter_deps="libopencv"
3117 owdenoise_filter_deps="gpl"
3118 pan_filter_deps="swresample"
3119 perspective_filter_deps="gpl"
3120 phase_filter_deps="gpl"
3121 pp7_filter_deps="gpl"
3122 pp_filter_deps="gpl postproc"
3123 pullup_filter_deps="gpl"
3124 removelogo_filter_deps="avcodec avformat swscale"
3125 repeatfields_filter_deps="gpl"
3126 resample_filter_deps="avresample"
3127 rubberband_filter_deps="librubberband"
3128 sab_filter_deps="gpl swscale"
3129 scale2ref_filter_deps="swscale"
3130 scale_filter_deps="swscale"
3131 scale_qsv_filter_deps="libmfx"
3132 select_filter_select="pixelutils"
3133 showcqt_filter_deps="avcodec avformat swscale"
3134 showcqt_filter_select="fft"
3135 showfreqs_filter_deps="avcodec"
3136 showfreqs_filter_select="fft"
3137 showspectrum_filter_deps="avcodec"
3138 showspectrum_filter_select="fft"
3139 showspectrumpic_filter_deps="avcodec"
3140 showspectrumpic_filter_select="fft"
3141 smartblur_filter_deps="gpl swscale"
3142 sofalizer_filter_deps="netcdf avcodec"
3143 sofalizer_filter_select="fft"
3144 spectrumsynth_filter_deps="avcodec"
3145 spectrumsynth_filter_select="fft"
3146 spp_filter_deps="gpl avcodec"
3147 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3148 stereo3d_filter_deps="gpl"
3149 subtitles_filter_deps="avformat avcodec libass"
3150 super2xsai_filter_deps="gpl"
3151 pixfmts_super2xsai_test_deps="super2xsai_filter"
3152 tinterlace_filter_deps="gpl"
3153 tinterlace_merge_test_deps="tinterlace_filter"
3154 tinterlace_pad_test_deps="tinterlace_filter"
3155 uspp_filter_deps="gpl avcodec"
3156 vaguedenoiser_filter_deps="gpl"
3157 vidstabdetect_filter_deps="libvidstab"
3158 vidstabtransform_filter_deps="libvidstab"
3159 zmq_filter_deps="libzmq"
3160 zoompan_filter_deps="swscale"
3161 zscale_filter_deps="libzimg"
3162 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3163
3164 # examples
3165 avio_dir_cmd_deps="avformat avutil"
3166 avio_reading_deps="avformat avcodec avutil"
3167 decoding_encoding_example_deps="avcodec avformat avutil"
3168 demuxing_decoding_example_deps="avcodec avformat avutil"
3169 extract_mvs_example_deps="avcodec avformat avutil"
3170 filter_audio_example_deps="avfilter avutil"
3171 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3172 filtering_video_example_deps="avfilter avcodec avformat avutil"
3173 http_multiclient_example_deps="avformat avutil fork"
3174 metadata_example_deps="avformat avutil"
3175 muxing_example_deps="avcodec avformat avutil swscale"
3176 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
3177 remuxing_example_deps="avcodec avformat avutil"
3178 resampling_audio_example_deps="avutil swresample"
3179 scaling_video_example_deps="avutil swscale"
3180 transcode_aac_example_deps="avcodec avformat swresample"
3181 transcoding_example_deps="avfilter avcodec avformat avutil"
3182
3183 # libraries, in linking order
3184 avcodec_deps="avutil"
3185 avdevice_deps="avformat avcodec avutil"
3186 avfilter_deps="avutil"
3187 avformat_deps="avcodec avutil"
3188 avresample_deps="avutil"
3189 postproc_deps="avutil gpl"
3190 swresample_deps="avutil"
3191 swscale_deps="avutil"
3192
3193 # programs
3194 ffmpeg_deps="avcodec avfilter avformat swresample"
3195 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3196                null_filter
3197                trim_filter"
3198 ffplay_deps="avcodec avformat swscale swresample sdl2"
3199 ffplay_libs='$sdl2_libs'
3200 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3201 ffprobe_deps="avcodec avformat"
3202 ffserver_deps="avformat fork sarestart"
3203 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3204
3205 # documentation
3206 podpages_deps="perl"
3207 manpages_deps="perl pod2man"
3208 htmlpages_deps="perl"
3209 htmlpages_deps_any="makeinfo_html texi2html"
3210 txtpages_deps="perl makeinfo"
3211 doc_deps_any="manpages htmlpages podpages txtpages"
3212
3213 # default parameters
3214
3215 logfile="config.log"
3216
3217 # installation paths
3218 prefix_default="/usr/local"
3219 bindir_default='${prefix}/bin'
3220 datadir_default='${prefix}/share/ffmpeg'
3221 docdir_default='${prefix}/share/doc/ffmpeg'
3222 incdir_default='${prefix}/include'
3223 libdir_default='${prefix}/lib'
3224 mandir_default='${prefix}/share/man'
3225
3226 # toolchain
3227 ar_default="ar"
3228 cc_default="gcc"
3229 cxx_default="g++"
3230 host_cc_default="gcc"
3231 cp_f="cp -f"
3232 doxygen_default="doxygen"
3233 install="install"
3234 ln_s_default="ln -s -f"
3235 nm_default="nm -g"
3236 objformat="elf"
3237 pkg_config_default=pkg-config
3238 ranlib_default="ranlib"
3239 strip_default="strip"
3240 version_script='--version-script'
3241 yasmexe_default="yasm"
3242 windres_default="windres"
3243
3244 # OS
3245 target_os_default=$(tolower $(uname -s))
3246 host_os=$target_os_default
3247
3248 # machine
3249 if test "$target_os_default" = aix; then
3250     arch_default=$(uname -p)
3251     strip_default="strip -X32_64"
3252 else
3253     arch_default=$(uname -m)
3254 fi
3255 cpu="generic"
3256 intrinsics="none"
3257
3258 # configurable options
3259 enable $PROGRAM_LIST
3260 enable $DOCUMENT_LIST
3261 enable $EXAMPLE_LIST
3262 enable $(filter_out avresample $LIBRARY_LIST)
3263 enable stripping
3264
3265 enable asm
3266 enable debug
3267 enable doc
3268 enable faan faandct faanidct
3269 enable optimizations
3270 enable runtime_cpudetect
3271 enable safe_bitstream_reader
3272 enable static
3273 enable swscale_alpha
3274 enable valgrind_backtrace
3275
3276 sws_max_filter_size_default=256
3277 set_default sws_max_filter_size
3278
3279 # build settings
3280 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3281 LIBPREF="lib"
3282 LIBSUF=".a"
3283 FULLNAME='$(NAME)$(BUILDSUF)'
3284 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3285 SLIBPREF="lib"
3286 SLIBSUF=".so"
3287 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3288 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3289 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3290 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3291 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3292 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3293 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3294
3295 asflags_filter=echo
3296 cflags_filter=echo
3297 ldflags_filter=echo
3298
3299 AS_C='-c'
3300 AS_O='-o $@'
3301 CC_C='-c'
3302 CC_E='-E -o $@'
3303 CC_O='-o $@'
3304 CXX_C='-c'
3305 CXX_O='-o $@'
3306 OBJCC_C='-c'
3307 OBJCC_E='-E -o $@'
3308 OBJCC_O='-o $@'
3309 LD_O='-o $@'
3310 LD_LIB='-l%'
3311 LD_PATH='-L'
3312 HOSTCC_C='-c'
3313 HOSTCC_E='-E -o $@'
3314 HOSTCC_O='-o $@'
3315 HOSTLD_O='-o $@'
3316
3317 host_libs='-lm'
3318 host_cflags_filter=echo
3319 host_ldflags_filter=echo
3320
3321 target_path='$(CURDIR)'
3322
3323 # since the object filename is not given with the -MM flag, the compiler
3324 # is only able to print the basename, and we must add the path ourselves
3325 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3326 DEPFLAGS='-MM'
3327
3328 # find source path
3329 if test -f configure; then
3330     source_path=.
3331 else
3332     source_path=$(cd $(dirname "$0"); pwd)
3333     case "$source_path" in
3334         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3335     esac
3336     test -e "$source_path/config.h" &&
3337         die "Out of tree builds are impossible with config.h in source dir."
3338 fi
3339
3340 for v in "$@"; do
3341     r=${v#*=}
3342     l=${v%"$r"}
3343     r=$(sh_quote "$r")
3344     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3345 done
3346
3347 find_things(){
3348     thing=$1
3349     pattern=$2
3350     file=$source_path/$3
3351     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3352 }
3353
3354 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3355 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3356 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3357 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3358 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3359 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3360 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3361 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3362 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3363
3364 find_things_extern(){
3365     thing=$1
3366     pattern=$2
3367     file=$source_path/$3
3368     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3369 }
3370
3371 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3372 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3373
3374 ALL_COMPONENTS="
3375     $BSF_LIST
3376     $DECODER_LIST
3377     $DEMUXER_LIST
3378     $ENCODER_LIST
3379     $FILTER_LIST
3380     $HWACCEL_LIST
3381     $INDEV_LIST
3382     $MUXER_LIST
3383     $OUTDEV_LIST
3384     $PARSER_LIST
3385     $PROTOCOL_LIST
3386 "
3387
3388 for n in $COMPONENT_LIST; do
3389     v=$(toupper ${n%s})_LIST
3390     eval enable \$$v
3391     eval ${n}_if_any="\$$v"
3392 done
3393
3394 enable $ARCH_EXT_LIST
3395
3396 die_unknown(){
3397     echo "Unknown option \"$1\"."
3398     echo "See $0 --help for available options."
3399     exit 1
3400 }
3401
3402 print_in_columns() {
3403     cols=$(expr $ncols / 24)
3404     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3405 }
3406
3407 show_list() {
3408     suffix=_$1
3409     shift
3410     echo $* | sed s/$suffix//g | print_in_columns
3411     exit 0
3412 }
3413
3414 rand_list(){
3415     IFS=', '
3416     set -- $*
3417     unset IFS
3418     for thing; do
3419         comp=${thing%:*}
3420         prob=${thing#$comp}
3421         prob=${prob#:}
3422         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3423         echo "prob ${prob:-0.5}"
3424         printf '%s\n' $comp
3425     done
3426 }
3427
3428 do_random(){
3429     action=$1
3430     shift
3431     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3432     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3433 }
3434
3435 for opt do
3436     optval="${opt#*=}"
3437     case "$opt" in
3438         --extra-ldflags=*)
3439             add_ldflags $optval
3440         ;;
3441         --extra-ldexeflags=*)
3442             add_ldexeflags $optval
3443         ;;
3444         --extra-ldlibflags=*)
3445             add_ldlibflags $optval
3446         ;;
3447         --extra-libs=*)
3448             add_extralibs $optval
3449         ;;
3450         --disable-devices)
3451             disable $INDEV_LIST $OUTDEV_LIST
3452         ;;
3453         --enable-debug=*)
3454             debuglevel="$optval"
3455         ;;
3456         --disable-programs)
3457             disable $PROGRAM_LIST
3458         ;;
3459         --disable-everything)
3460             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3461         ;;
3462         --disable-all)
3463             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3464             disable $LIBRARY_LIST $PROGRAM_LIST doc
3465             enable avutil
3466         ;;
3467         --enable-random|--disable-random)
3468             action=${opt%%-random}
3469             do_random ${action#--} $COMPONENT_LIST
3470         ;;
3471         --enable-random=*|--disable-random=*)
3472             action=${opt%%-random=*}
3473             do_random ${action#--} $optval
3474         ;;
3475         --enable-*=*|--disable-*=*)
3476             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3477             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3478             eval list=\$$(toupper $thing)_LIST
3479             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3480             list=$(filter "$name" $list)
3481             [ "$list" = "" ] && warn "Option $opt did not match anything"
3482             $action $list
3483         ;;
3484         --enable-?*|--disable-?*)
3485             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3486             if is_in $option $COMPONENT_LIST; then
3487                 test $action = disable && action=unset
3488                 eval $action \$$(toupper ${option%s})_LIST
3489             elif is_in $option $CMDLINE_SELECT; then
3490                 $action $option
3491             else
3492                 die_unknown $opt
3493             fi
3494         ;;
3495         --list-*)
3496             NAME="${opt#--list-}"
3497             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3498             NAME=${NAME%s}
3499             eval show_list $NAME \$$(toupper $NAME)_LIST
3500         ;;
3501         --help|-h) show_help
3502         ;;
3503         --fatal-warnings) enable fatal_warnings
3504         ;;
3505         *)
3506             optname="${opt%%=*}"
3507             optname="${optname#--}"
3508             optname=$(echo "$optname" | sed 's/-/_/g')
3509             if is_in $optname $CMDLINE_SET; then
3510                 eval $optname='$optval'
3511             elif is_in $optname $CMDLINE_APPEND; then
3512                 append $optname "$optval"
3513             else
3514                 die_unknown $opt
3515             fi
3516         ;;
3517     esac
3518 done
3519
3520 for e in $env; do
3521     eval "export $e"
3522 done
3523
3524 # Mark specifically enabled, but normally autodetected libraries as requested.
3525 for lib in $AUTODETECT_LIBS; do
3526     enabled $lib && request $lib
3527 done
3528
3529 # Enable platform codecs by default.
3530 enable_weak audiotoolbox
3531
3532 # Enable hwaccels by default.
3533 enable_weak d3d11va dxva2 vaapi vda vdpau videotoolbox_hwaccel xvmc
3534 enable_weak xlib
3535
3536 enable_weak cuda cuvid nvenc vda_framework videotoolbox videotoolbox_encoder
3537
3538 disabled logging && logfile=/dev/null
3539
3540 # Disable all the library-specific components if the library itself
3541 # is disabled, see AVCODEC_LIST and following _LIST variables.
3542
3543 disable_components(){
3544     disabled ${1} && disable $(
3545         eval components="\$$(toupper ${1})_COMPONENTS"
3546         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3547     )
3548 }
3549
3550 map 'disable_components $v' $LIBRARY_LIST
3551
3552 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3553 set >> $logfile
3554
3555 test -n "$valgrind" && toolchain="valgrind-memcheck"
3556
3557 case "$toolchain" in
3558     *-asan)
3559         cc_default="${toolchain%-asan}"
3560         add_cflags  -fsanitize=address
3561         add_ldflags -fsanitize=address
3562     ;;
3563     *-msan)
3564         cc_default="${toolchain%-msan}"
3565         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3566         add_ldflags -fsanitize=memory
3567     ;;
3568     *-tsan)
3569         cc_default="${toolchain%-tsan}"
3570         add_cflags  -fsanitize=thread -fPIE
3571         add_ldflags -fsanitize=thread -pie
3572         case "$toolchain" in
3573             gcc-tsan)
3574                 add_cflags  -fPIC
3575                 add_ldflags -fPIC
3576                 ;;
3577         esac
3578     ;;
3579     *-usan)
3580         cc_default="${toolchain%-usan}"
3581         add_cflags  -fsanitize=undefined
3582         add_ldflags -fsanitize=undefined
3583     ;;
3584     valgrind-*)
3585         target_exec_default="valgrind"
3586         case "$toolchain" in
3587             valgrind-massif)
3588                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3589                 ;;
3590             valgrind-memcheck)
3591                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3592                 ;;
3593         esac
3594     ;;
3595     msvc)
3596         # Check whether the current MSVC version needs the C99 converter.
3597         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3598         # support enough of C99 to build ffmpeg. Default to the new
3599         # behaviour if the regexp was unable to match anything, since this
3600         # successfully parses the version number of existing supported
3601         # versions that require the converter (MSVC 2010 and 2012).
3602         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3603         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3604             cc_default="cl"
3605         else
3606             cc_default="c99wrap cl"
3607         fi
3608         ld_default="$source_path/compat/windows/mslink"
3609         nm_default="dumpbin -symbols"
3610         ar_default="lib"
3611         case "$arch" in
3612         arm*)
3613             as_default="armasm"
3614             ;;
3615         esac
3616         target_os_default="win32"
3617         # Use a relative path for TMPDIR. This makes sure all the
3618         # ffconf temp files are written with a relative path, avoiding
3619         # issues with msys/win32 path conversion for MSVC parameters
3620         # such as -Fo<file> or -out:<file>.
3621         TMPDIR=.
3622     ;;
3623     icl)
3624         cc_default="icl"
3625         ld_default="xilink"
3626         nm_default="dumpbin -symbols"
3627         ar_default="xilib"
3628         target_os_default="win32"
3629         TMPDIR=.
3630     ;;
3631     gcov)
3632         add_cflags  -fprofile-arcs -ftest-coverage
3633         add_ldflags -fprofile-arcs -ftest-coverage
3634     ;;
3635     llvm-cov)
3636         add_cflags -fprofile-arcs -ftest-coverage
3637         add_ldflags --coverage
3638     ;;
3639     hardened)
3640         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3641         add_cflags   -fno-strict-overflow -fstack-protector-all
3642         add_ldflags  -Wl,-z,relro -Wl,-z,now
3643         add_cflags   -fPIE
3644         add_ldexeflags -fPIE -pie
3645     ;;
3646     ?*)
3647         die "Unknown toolchain $toolchain"
3648     ;;
3649 esac
3650
3651 test -n "$cross_prefix" && enable cross_compile
3652
3653 if enabled cross_compile; then
3654     test -n "$arch" && test -n "$target_os" ||
3655         die "Must specify target arch and OS when cross-compiling"
3656 fi
3657
3658 ar_default="${cross_prefix}${ar_default}"
3659 cc_default="${cross_prefix}${cc_default}"
3660 cxx_default="${cross_prefix}${cxx_default}"
3661 nm_default="${cross_prefix}${nm_default}"
3662 pkg_config_default="${cross_prefix}${pkg_config_default}"
3663 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3664     ranlib_default="${cross_prefix}${ranlib_default} -D"
3665 else
3666     ranlib_default="${cross_prefix}${ranlib_default}"
3667 fi
3668 strip_default="${cross_prefix}${strip_default}"
3669 windres_default="${cross_prefix}${windres_default}"
3670
3671 sysinclude_default="${sysroot}/usr/include"
3672
3673 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3674     target_exec target_os yasmexe
3675 enabled cross_compile || host_cc_default=$cc
3676 set_default host_cc
3677
3678 pkg_config_fail_message=""
3679 if ! $pkg_config --version >/dev/null 2>&1; then
3680     warn "$pkg_config not found, library detection may fail."
3681     pkg_config=false
3682 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3683     pkg_config_fail_message="
3684 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3685 fi
3686
3687 if test $doxygen != $doxygen_default && \
3688   ! $doxygen --version >/dev/null 2>&1; then
3689     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3690 fi
3691
3692 exesuf() {
3693     case $1 in
3694         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3695     esac
3696 }
3697
3698 EXESUF=$(exesuf $target_os)
3699 HOSTEXESUF=$(exesuf $host_os)
3700
3701 # set temporary file name
3702 : ${TMPDIR:=$TEMPDIR}
3703 : ${TMPDIR:=$TMP}
3704 : ${TMPDIR:=/tmp}
3705
3706 if [ -n "$tempprefix" ] ; then
3707     mktemp(){
3708         echo $tempprefix.${HOSTNAME}.${UID}
3709     }
3710 elif ! check_cmd mktemp -u XXXXXX; then
3711     # simple replacement for missing mktemp
3712     # NOT SAFE FOR GENERAL USE
3713     mktemp(){
3714         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3715     }
3716 fi
3717
3718 tmpfile(){
3719     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3720         (set -C; exec > $tmp) 2>/dev/null ||
3721         die "Unable to create temporary file in $TMPDIR."
3722     append TMPFILES $tmp
3723     eval $1=$tmp
3724 }
3725
3726 trap 'rm -f -- $TMPFILES' EXIT
3727
3728 tmpfile TMPASM .asm
3729 tmpfile TMPC   .c
3730 tmpfile TMPCPP .cpp
3731 tmpfile TMPE   $EXESUF
3732 tmpfile TMPH   .h
3733 tmpfile TMPM   .m
3734 tmpfile TMPO   .o
3735 tmpfile TMPS   .S
3736 tmpfile TMPSH  .sh
3737 tmpfile TMPV   .ver
3738
3739 unset -f mktemp
3740
3741 chmod +x $TMPE
3742
3743 # make sure we can execute files in $TMPDIR
3744 cat > $TMPSH 2>> $logfile <<EOF
3745 #! /bin/sh
3746 EOF
3747 chmod +x $TMPSH >> $logfile 2>&1
3748 if ! $TMPSH >> $logfile 2>&1; then
3749     cat <<EOF
3750 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3751 variable to another directory and make sure that it is not mounted noexec.
3752 EOF
3753     die "Sanity test failed."
3754 fi
3755
3756 armasm_flags(){
3757     for flag; do
3758         case $flag in
3759             # Filter out MSVC cl.exe options from cflags that shouldn't
3760             # be passed to gas-preprocessor
3761             -M[TD]*)                                            ;;
3762             *)                  echo $flag                      ;;
3763         esac
3764    done
3765 }
3766
3767 ccc_flags(){
3768     for flag; do
3769         case $flag in
3770             -std=c99)           echo -c99                       ;;
3771             -mcpu=*)            echo -arch ${flag#*=}           ;;
3772             -mieee)             echo -ieee                      ;;
3773             -O*|-fast)          echo $flag                      ;;
3774             -fno-math-errno)    echo -assume nomath_errno       ;;
3775             -g)                 echo -g3                        ;;
3776             -Wall)              echo -msg_enable level2         ;;
3777             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3778             -Wl,*)              echo $flag                      ;;
3779             -f*|-W*)                                            ;;
3780             *)                  echo $flag                      ;;
3781         esac
3782    done
3783 }
3784
3785 cparser_flags(){
3786     for flag; do
3787         case $flag in
3788             -Wno-switch)             echo -Wno-switch-enum ;;
3789             -Wno-format-zero-length) ;;
3790             -Wdisabled-optimization) ;;
3791             -Wno-pointer-sign)       echo -Wno-other ;;
3792             *)                       echo $flag ;;
3793         esac
3794     done
3795 }
3796
3797 msvc_common_flags(){
3798     for flag; do
3799         case $flag in
3800             # In addition to specifying certain flags under the compiler
3801             # specific filters, they must be specified here as well or else the
3802             # generic catch all at the bottom will print the original flag.
3803             -Wall)                ;;
3804             -std=c99)             ;;
3805             # Common flags
3806             -fomit-frame-pointer) ;;
3807             -g)                   echo -Z7 ;;
3808             -fno-math-errno)      ;;
3809             -fno-common)          ;;
3810             -fno-signed-zeros)    ;;
3811             -fPIC)                ;;
3812             -mthumb)              ;;
3813             -march=*)             ;;
3814             -lz)                  echo zlib.lib ;;
3815             -lavifil32)           echo vfw32.lib ;;
3816             -lavicap32)           echo vfw32.lib user32.lib ;;
3817             -lx264)               echo libx264.lib ;;
3818             -l*)                  echo ${flag#-l}.lib ;;
3819             -LARGEADDRESSAWARE)   echo $flag ;;
3820             -L*)                  echo -libpath:${flag#-L} ;;
3821             *)                    echo $flag ;;
3822         esac
3823     done
3824 }
3825
3826 msvc_flags(){
3827     msvc_common_flags "$@"
3828     for flag; do
3829         case $flag in
3830             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3831                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3832                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3833                                        -wd4307 \
3834                                        -wd4273 -wd4554 -wd4701 ;;
3835         esac
3836     done
3837 }
3838
3839 icl_flags(){
3840     msvc_common_flags "$@"
3841     for flag; do
3842         case $flag in
3843             # Despite what Intel's documentation says -Wall, which is supported
3844             # on Windows, does enable remarks so disable them here.
3845             -Wall)                echo $flag -Qdiag-disable:remark ;;
3846             -std=c99)             echo -Qstd=c99 ;;
3847             -flto)                echo -ipo ;;
3848         esac
3849     done
3850 }
3851
3852 icc_flags(){
3853     for flag; do
3854         case $flag in
3855             -flto)                echo -ipo ;;
3856             *)                    echo $flag ;;
3857         esac
3858     done
3859 }
3860
3861 pgi_flags(){
3862     for flag; do
3863         case $flag in
3864             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3865             -fomit-frame-pointer) echo -Mnoframe ;;
3866             -g)                   echo -gopt ;;
3867             *)                    echo $flag ;;
3868         esac
3869     done
3870 }
3871
3872 suncc_flags(){
3873     for flag; do
3874         case $flag in
3875             -march=*|-mcpu=*)
3876                 case "${flag#*=}" in
3877                     native)                   echo -xtarget=native       ;;
3878                     v9|niagara)               echo -xarch=sparc          ;;
3879                     ultrasparc)               echo -xarch=sparcvis       ;;
3880                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3881                     i586|pentium)             echo -xchip=pentium        ;;
3882                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3883                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3884                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3885                     pentium4*)          echo -xtarget=pentium4           ;;
3886                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3887                     *-sse3)             echo -xarch=sse3                 ;;
3888                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3889                     bonnell)                   echo -xarch=ssse3         ;;
3890                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3891                     westmere)                  echo -xtarget=westmere    ;;
3892                     silvermont)                echo -xarch=sse4_2        ;;
3893                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3894                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
3895                                                echo -xarch=avx           ;;
3896                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3897                     btver1)                    echo -xarch=amdsse4a      ;;
3898                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
3899                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3900                     k8|opteron|athlon64|athlon-fx)
3901                                                echo -xarch=sse2a         ;;
3902                     athlon*)                   echo -xarch=pentium_proa  ;;
3903                 esac
3904                 ;;
3905             -std=c99)             echo -xc99              ;;
3906             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3907             -fPIC)                echo -KPIC -xcode=pic32 ;;
3908             -W*,*)                echo $flag              ;;
3909             -f*-*|-W*|-mimpure-text)                      ;;
3910             -shared)              echo -G                 ;;
3911             *)                    echo $flag              ;;
3912         esac
3913     done
3914 }
3915
3916 tms470_flags(){
3917     for flag; do
3918         case $flag in
3919             -march=*|-mcpu=*)
3920                 case "${flag#*=}" in
3921                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3922                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3923                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3924                     armv6*|arm11*)          echo -mv=6   ;;
3925                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3926                                             echo -mv=5e  ;;
3927                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3928                 esac
3929                 ;;
3930             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3931             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3932             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3933             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3934             -msoft-float)   echo --float_support=vfplib       ;;
3935             -O[0-3]|-mf=*)  echo $flag                        ;;
3936             -g)             echo -g -mn                       ;;
3937             -pds=*)         echo $flag                        ;;
3938             -D*|-I*)        echo $flag                        ;;
3939             --gcc|--abi=*)  echo $flag                        ;;
3940             -me)            echo $flag                        ;;
3941         esac
3942     done
3943 }
3944
3945 probe_cc(){
3946     pfx=$1
3947     _cc=$2
3948     first=$3
3949
3950     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3951     unset _ld_o _ldflags _ld_lib _ld_path
3952     unset _depflags _DEPCMD _DEPFLAGS
3953     _flags_filter=echo
3954
3955     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3956         true # no-op to avoid reading stdin in following checks
3957     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3958         _type=llvm_gcc
3959         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3960         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3961         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3962         _cflags_speed='-O3'
3963         _cflags_size='-Os'
3964     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3965         _type=gcc
3966         gcc_version=$($_cc --version | head -n1)
3967         gcc_basever=$($_cc -dumpversion)
3968         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3969         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3970         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3971         case $gcc_basever in
3972             2) ;;
3973             2.*) ;;
3974             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
3975         esac
3976         if [ "$first" = true ]; then
3977             case $gcc_basever in
3978                 4.2*)
3979                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
3980             esac
3981         fi
3982         _cflags_speed='-O3'
3983         _cflags_size='-Os'
3984     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3985         _type=icc
3986         _ident=$($_cc --version | head -n1)
3987         _depflags='-MMD'
3988         _cflags_speed='-O3'
3989         _cflags_size='-Os'
3990         _cflags_noopt='-O1'
3991         _flags_filter=icc_flags
3992     elif $_cc -v 2>&1 | grep -q xlc; then
3993         _type=xlc
3994         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3995         _cflags_speed='-O5'
3996         _cflags_size='-O5 -qcompact'
3997     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3998         _type=ccc
3999         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
4000         _DEPFLAGS='-M'
4001         _cflags_speed='-fast'
4002         _cflags_size='-O1'
4003         _flags_filter=ccc_flags
4004     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4005         test -d "$sysroot" || die "No valid sysroot specified."
4006         _type=armcc
4007         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4008         armcc_conf="$PWD/armcc.conf"
4009         $_cc --arm_linux_configure                 \
4010              --arm_linux_config_file="$armcc_conf" \
4011              --configure_sysroot="$sysroot"        \
4012              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4013              die "Error creating armcc configuration file."
4014         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4015         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4016         as_default="${cross_prefix}gcc"
4017         _depflags='-MMD'
4018         _cflags_speed='-O3'
4019         _cflags_size='-Os'
4020     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
4021         _type=tms470
4022         _ident=$($_cc -version | head -n1 | tr -s ' ')
4023         _flags='--gcc --abi=eabi -me'
4024         _cc_e='-ppl -fe=$@'
4025         _cc_o='-fe=$@'
4026         _depflags='-ppa -ppd=$(@:.o=.d)'
4027         _cflags_speed='-O3 -mf=5'
4028         _cflags_size='-O3 -mf=2'
4029         _flags_filter=tms470_flags
4030     elif $_cc -v 2>&1 | grep -q clang; then
4031         _type=clang
4032         _ident=$($_cc --version 2>/dev/null | head -n1)
4033         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4034         _cflags_speed='-O3'
4035         _cflags_size='-Os'
4036     elif $_cc -V 2>&1 | grep -q Sun; then
4037         _type=suncc
4038         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4039         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4040         _DEPFLAGS='-xM1 -xc99'
4041         _ldflags='-std=c99'
4042         _cflags_speed='-O5'
4043         _cflags_size='-O5 -xspace'
4044         _flags_filter=suncc_flags
4045     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4046         _type=pathscale
4047         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4048         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4049         _cflags_speed='-O2'
4050         _cflags_size='-Os'
4051         _flags_filter='filter_out -Wdisabled-optimization'
4052     elif $_cc -v 2>&1 | grep -q Open64; then
4053         _type=open64
4054         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4055         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4056         _cflags_speed='-O2'
4057         _cflags_size='-Os'
4058         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4059     elif $_cc -V 2>&1 | grep -q Portland; then
4060         _type=pgi
4061         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
4062         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
4063         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
4064         _cflags_size="-O2 -Munroll=c:1 $opt_common"
4065         _cflags_noopt="-O"
4066         _flags_filter=pgi_flags
4067     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4068         _type=armasm
4069         _ident=$($_cc | head -n1)
4070         # 4509: "This form of conditional instruction is deprecated"
4071         _flags="-nologo -ignore 4509"
4072         _flags_filter=armasm_flags
4073     elif $_cc 2>&1 | grep -q Intel; then
4074         _type=icl
4075         _ident=$($_cc 2>&1 | head -n1)
4076         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4077         # Not only is O3 broken on 13.x+ but it is slower on all previous
4078         # versions (tested) as well.
4079         _cflags_speed="-O2"
4080         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4081         if $_cc 2>&1 | grep -q Linker; then
4082             _ld_o='-out:$@'
4083         else
4084             _ld_o='-Fe$@'
4085         fi
4086         _cc_o='-Fo$@'
4087         _cc_e='-P'
4088         _flags_filter=icl_flags
4089         _ld_lib='lib%.a'
4090         _ld_path='-libpath:'
4091         # -Qdiag-error to make icl error when seeing certain unknown arguments
4092         _flags='-nologo -Qdiag-error:4044,10157'
4093         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4094         # with MSVC which enables it by default.
4095         _cflags='-D_USE_MATH_DEFINES -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4096         disable stripping
4097     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4098         _type=msvc
4099         _ident=$($_cc 2>&1 | head -n1)
4100         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4101         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4102         _cflags_speed="-O2"
4103         _cflags_size="-O1"
4104         if $_cc -nologo- 2>&1 | grep -q Linker; then
4105             _ld_o='-out:$@'
4106         else
4107             _ld_o='-Fe$@'
4108         fi
4109         _cc_o='-Fo$@'
4110         _cc_e='-P -Fi$@'
4111         _flags_filter=msvc_flags
4112         _ld_lib='lib%.a'
4113         _ld_path='-libpath:'
4114         _flags='-nologo'
4115         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS'
4116         disable stripping
4117     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4118         _type=cparser
4119         _ident=$($_cc --version | head -n1)
4120         _depflags='-MMD'
4121         _cflags_speed='-O4'
4122         _cflags_size='-O2'
4123         _flags_filter=cparser_flags
4124     fi
4125
4126     eval ${pfx}_type=\$_type
4127     eval ${pfx}_ident=\$_ident
4128 }
4129
4130 set_ccvars(){
4131     eval ${1}_C=\${_cc_c-\${${1}_C}}
4132     eval ${1}_E=\${_cc_e-\${${1}_E}}
4133     eval ${1}_O=\${_cc_o-\${${1}_O}}
4134
4135     if [ -n "$_depflags" ]; then
4136         eval ${1}_DEPFLAGS=\$_depflags
4137     else
4138         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4139         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4140         eval DEP${1}FLAGS=\$_flags
4141     fi
4142 }
4143
4144 probe_cc cc "$cc" "true"
4145 cflags_filter=$_flags_filter
4146 cflags_speed=$_cflags_speed
4147 cflags_size=$_cflags_size
4148 cflags_noopt=$_cflags_noopt
4149 add_cflags $_flags $_cflags
4150 cc_ldflags=$_ldflags
4151 set_ccvars CC
4152
4153 probe_cc hostcc "$host_cc"
4154 host_cflags_filter=$_flags_filter
4155 add_host_cflags  $_flags $_cflags
4156 set_ccvars HOSTCC
4157
4158 test -n "$cc_type" && enable $cc_type ||
4159     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4160
4161 : ${as_default:=$cc}
4162 : ${objcc_default:=$cc}
4163 : ${dep_cc_default:=$cc}
4164 : ${ld_default:=$cc}
4165 : ${host_ld_default:=$host_cc}
4166 set_default ar as objcc dep_cc ld ln_s host_ld windres
4167
4168 probe_cc as "$as"
4169 asflags_filter=$_flags_filter
4170 add_asflags $_flags $_cflags
4171 set_ccvars AS
4172
4173 probe_cc objcc "$objcc"
4174 objcflags_filter=$_flags_filter
4175 add_objcflags $_flags $_cflags
4176 set_ccvars OBJC
4177
4178 probe_cc ld "$ld"
4179 ldflags_filter=$_flags_filter
4180 add_ldflags $_flags $_ldflags
4181 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4182 LD_O=${_ld_o-$LD_O}
4183 LD_LIB=${_ld_lib-$LD_LIB}
4184 LD_PATH=${_ld_path-$LD_PATH}
4185
4186 probe_cc hostld "$host_ld"
4187 host_ldflags_filter=$_flags_filter
4188 add_host_ldflags $_flags $_ldflags
4189 HOSTLD_O=${_ld_o-$HOSTLD_O}
4190
4191 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4192     probe_cc depcc "$dep_cc"
4193     CCDEP=${_DEPCMD:-$DEPCMD}
4194     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4195     DEPCCFLAGS=$_flags
4196 fi
4197
4198 if $ar 2>&1 | grep -q Microsoft; then
4199     arflags="-nologo"
4200     ar_o='-out:$@'
4201 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
4202     arflags="rq"
4203     ar_o='$@'
4204 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
4205     arflags='-Xany -r -c'
4206     ar_o='$@'
4207 elif $ar 2>&1 | grep -q "\[D\] "; then
4208     arflags="rcD"
4209     ar_o='$@'
4210 else
4211     arflags="rc"
4212     ar_o='$@'
4213 fi
4214
4215 add_cflags $extra_cflags
4216 add_cxxflags $extra_cxxflags
4217 add_objcflags $extra_objcflags
4218 add_asflags $extra_cflags
4219
4220 if test -n "$sysroot"; then
4221     case "$cc_type" in
4222         gcc|llvm_gcc|clang)
4223             add_cppflags --sysroot="$sysroot"
4224             add_ldflags --sysroot="$sysroot"
4225 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
4226             add_cppflags -isysroot "$sysroot"
4227             add_ldflags -isysroot "$sysroot"
4228         ;;
4229         tms470)
4230             add_cppflags -I"$sysinclude"
4231             add_ldflags  --sysroot="$sysroot"
4232         ;;
4233     esac
4234 fi
4235
4236 if test "$cpu" = host; then
4237     enabled cross_compile &&
4238         die "--cpu=host makes no sense when cross-compiling."
4239
4240     case "$cc_type" in
4241         gcc|llvm_gcc)
4242             check_native(){
4243                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4244                 sed -n "/cc1.*$1=/{
4245                             s/.*$1=\\([^ ]*\\).*/\\1/
4246                             p
4247                             q
4248                         }" $TMPE
4249             }
4250             cpu=$(check_native -march || check_native -mcpu)
4251         ;;
4252         clang)
4253             check_native(){
4254                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4255                 sed -n "/cc1.*-target-cpu /{
4256                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4257                             p
4258                             q
4259                         }" $TMPE
4260             }
4261             cpu=$(check_native -march)
4262         ;;
4263     esac
4264
4265     test "${cpu:-host}" = host &&
4266         die "--cpu=host not supported with compiler $cc"
4267 fi
4268
4269 # Deal with common $arch aliases
4270 case "$arch" in
4271     aarch64|arm64)
4272         arch="aarch64"
4273     ;;
4274     arm*|iPad*|iPhone*)
4275         arch="arm"
4276     ;;
4277     mips*|IP*)
4278         case "$arch" in
4279         *el)
4280             add_cppflags -EL
4281             add_ldflags -EL
4282         ;;
4283         *eb)
4284             add_cppflags -EB
4285             add_ldflags -EB
4286         ;;
4287         esac
4288         arch="mips"
4289     ;;
4290     parisc*|hppa*)
4291         arch="parisc"
4292     ;;
4293     "Power Macintosh"|ppc*|powerpc*)
4294         arch="ppc"
4295     ;;
4296     s390|s390x)
4297         arch="s390"
4298     ;;
4299     sh4|sh)
4300         arch="sh4"
4301     ;;
4302     sun4*|sparc*)
4303         arch="sparc"
4304     ;;
4305     tilegx|tile-gx)
4306         arch="tilegx"
4307     ;;
4308     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4309         arch="x86"
4310     ;;
4311 esac
4312
4313 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4314 enable $arch
4315
4316 # Add processor-specific flags
4317 if enabled aarch64; then
4318
4319     case $cpu in
4320         armv*)
4321             cpuflags="-march=$cpu"
4322         ;;
4323         *)
4324             cpuflags="-mcpu=$cpu"
4325         ;;
4326     esac
4327
4328 elif enabled alpha; then
4329
4330     cpuflags="-mcpu=$cpu"
4331
4332 elif enabled arm; then
4333
4334     check_arm_arch() {
4335         check_cpp_condition stddef.h \
4336             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4337             $cpuflags
4338     }
4339
4340     probe_arm_arch() {
4341         if   check_arm_arch 4;        then echo armv4
4342         elif check_arm_arch 4T;       then echo armv4t
4343         elif check_arm_arch 5;        then echo armv5
4344         elif check_arm_arch 5E;       then echo armv5e
4345         elif check_arm_arch 5T;       then echo armv5t
4346         elif check_arm_arch 5TE;      then echo armv5te
4347         elif check_arm_arch 5TEJ;     then echo armv5te
4348         elif check_arm_arch 6;        then echo armv6
4349         elif check_arm_arch 6J;       then echo armv6j
4350         elif check_arm_arch 6K;       then echo armv6k
4351         elif check_arm_arch 6Z;       then echo armv6z
4352         elif check_arm_arch 6ZK;      then echo armv6zk
4353         elif check_arm_arch 6T2;      then echo armv6t2
4354         elif check_arm_arch 7;        then echo armv7
4355         elif check_arm_arch 7A  7_A;  then echo armv7-a
4356         elif check_arm_arch 7S;       then echo armv7-a
4357         elif check_arm_arch 7R  7_R;  then echo armv7-r
4358         elif check_arm_arch 7M  7_M;  then echo armv7-m
4359         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4360         elif check_arm_arch 8A  8_A;  then echo armv8-a
4361         fi
4362     }
4363
4364     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4365
4366     case $cpu in
4367         armv*)
4368             cpuflags="-march=$cpu"
4369             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4370         ;;
4371         *)
4372             cpuflags="-mcpu=$cpu"
4373             case $cpu in
4374                 cortex-a*)                               subarch=armv7a  ;;
4375                 cortex-r*)                               subarch=armv7r  ;;
4376                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4377                 arm11*)                                  subarch=armv6   ;;
4378                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4379                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4380                 *)                             subarch=$(probe_arm_arch) ;;
4381             esac
4382         ;;
4383     esac
4384
4385     case "$subarch" in
4386         armv5t*)    enable fast_clz                ;;
4387         armv[6-8]*)
4388             enable fast_clz
4389             disabled fast_unaligned || enable fast_unaligned
4390             ;;
4391     esac
4392
4393 elif enabled avr32; then
4394
4395     case $cpu in
4396         ap7[02]0[0-2])
4397             subarch="avr32_ap"
4398             cpuflags="-mpart=$cpu"
4399         ;;
4400         ap)
4401             subarch="avr32_ap"
4402             cpuflags="-march=$cpu"
4403         ;;
4404         uc3[ab]*)
4405             subarch="avr32_uc"
4406             cpuflags="-mcpu=$cpu"
4407         ;;
4408         uc)
4409             subarch="avr32_uc"
4410             cpuflags="-march=$cpu"
4411         ;;
4412     esac
4413
4414 elif enabled bfin; then
4415
4416     cpuflags="-mcpu=$cpu"
4417
4418 elif enabled mips; then
4419
4420     cpuflags="-march=$cpu"
4421
4422     if [ "$cpu" != "generic" ]; then
4423         disable mips32r2
4424         disable mips32r5
4425         disable mips64r2
4426         disable mips32r6
4427         disable mips64r6
4428         disable loongson2
4429         disable loongson3
4430
4431         case $cpu in
4432             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4433                 enable mips32r2
4434                 disable msa
4435             ;;
4436             p5600|i6400|p6600)
4437                 disable mipsdsp
4438                 disable mipsdspr2
4439             ;;
4440             loongson*)
4441                 enable loongson2
4442                 enable loongson3
4443                 enable local_aligned_8 local_aligned_16 local_aligned_32
4444                 enable simd_align_16
4445                 enable fast_64bit
4446                 enable fast_clz
4447                 enable fast_cmov
4448                 enable fast_unaligned
4449                 disable aligned_stack
4450                 disable mipsfpu
4451                 disable mipsdsp
4452                 disable mipsdspr2
4453                 case $cpu in
4454                     loongson3*)
4455                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4456                     ;;
4457                     loongson2e)
4458                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4459                     ;;
4460                     loongson2f)
4461                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4462                     ;;
4463                 esac
4464             ;;
4465             *)
4466                 # Unknown CPU. Disable everything.
4467                 warn "unknown CPU. Disabling all MIPS optimizations."
4468                 disable mipsfpu
4469                 disable mipsdsp
4470                 disable mipsdspr2
4471                 disable msa
4472                 disable mmi
4473             ;;
4474         esac
4475
4476         case $cpu in
4477             24kc)
4478                 disable mipsfpu
4479                 disable mipsdsp
4480                 disable mipsdspr2
4481             ;;
4482             24kf*)
4483                 disable mipsdsp
4484                 disable mipsdspr2
4485             ;;
4486             24kec|34kc|1004kc)
4487                 disable mipsfpu
4488                 disable mipsdspr2
4489             ;;
4490             24kef*|34kf*|1004kf*)
4491                 disable mipsdspr2
4492             ;;
4493             74kc)
4494                 disable mipsfpu
4495             ;;
4496             p5600)
4497                 enable mips32r5
4498                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4499             ;;
4500             i6400)
4501                 enable mips64r6
4502                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4503             ;;
4504             p6600)
4505                 enable mips64r6
4506                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4507             ;;
4508         esac
4509     else
4510         # We do not disable anything. Is up to the user to disable the unwanted features.
4511         warn 'generic cpu selected'
4512     fi
4513
4514 elif enabled ppc; then
4515
4516     disable ldbrx
4517
4518     case $(tolower $cpu) in
4519         601|ppc601|powerpc601)
4520             cpuflags="-mcpu=601"
4521             disable altivec
4522         ;;
4523         603*|ppc603*|powerpc603*)
4524             cpuflags="-mcpu=603"
4525             disable altivec
4526         ;;
4527         604*|ppc604*|powerpc604*)
4528             cpuflags="-mcpu=604"
4529             disable altivec
4530         ;;
4531         g3|75*|ppc75*|powerpc75*)
4532             cpuflags="-mcpu=750"
4533             disable altivec
4534         ;;
4535         g4|745*|ppc745*|powerpc745*)
4536             cpuflags="-mcpu=7450"
4537             disable vsx
4538         ;;
4539         74*|ppc74*|powerpc74*)
4540             cpuflags="-mcpu=7400"
4541             disable vsx
4542         ;;
4543         g5|970|ppc970|powerpc970)
4544             cpuflags="-mcpu=970"
4545             disable vsx
4546         ;;
4547         power[3-6]*)
4548             cpuflags="-mcpu=$cpu"
4549             disable vsx
4550         ;;
4551         power[7-8]*)
4552             cpuflags="-mcpu=$cpu"
4553         ;;
4554         cell)
4555             cpuflags="-mcpu=cell"
4556             enable ldbrx
4557             disable vsx
4558         ;;
4559         e500mc)
4560             cpuflags="-mcpu=e500mc"
4561             disable altivec
4562         ;;
4563         e500v2)
4564             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4565             disable altivec
4566             disable dcbzl
4567         ;;
4568         e500)
4569             cpuflags="-mcpu=8540 -mhard-float"
4570             disable altivec
4571             disable dcbzl
4572         ;;
4573     esac
4574
4575 elif enabled sparc; then
4576
4577     case $cpu in
4578         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4579             cpuflags="-mcpu=$cpu"
4580         ;;
4581         ultrasparc*|niagara[234])
4582             cpuflags="-mcpu=$cpu"
4583         ;;
4584     esac
4585
4586 elif enabled x86; then
4587
4588     case $cpu in
4589         i[345]86|pentium)
4590             cpuflags="-march=$cpu"
4591             disable i686
4592             disable mmx
4593         ;;
4594         # targets that do NOT support nopl and conditional mov (cmov)
4595         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4596             cpuflags="-march=$cpu"
4597             disable i686
4598         ;;
4599         # targets that do support nopl and conditional mov (cmov)
4600         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4601         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4602         |amdfam10|barcelona|b[dt]ver*|znver*)
4603             cpuflags="-march=$cpu"
4604             enable i686
4605             enable fast_cmov
4606         ;;
4607         # targets that do support conditional mov but on which it's slow
4608         pentium4|pentium4m|prescott|nocona)
4609             cpuflags="-march=$cpu"
4610             enable i686
4611             disable fast_cmov
4612         ;;
4613     esac
4614
4615 fi
4616
4617 if [ "$cpu" != generic ]; then
4618     add_cflags  $cpuflags
4619     add_asflags $cpuflags
4620     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4621 fi
4622
4623 # compiler sanity check
4624 check_exec <<EOF
4625 int main(void){ return 0; }
4626 EOF
4627 if test "$?" != 0; then
4628     echo "$cc is unable to create an executable file."
4629     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4630         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4631         echo "Only do this if you know what cross compiling means."
4632     fi
4633     die "C compiler test failed."
4634 fi
4635
4636 add_cppflags -D_ISOC99_SOURCE
4637 add_cxxflags -D__STDC_CONSTANT_MACROS
4638 add_cxxflags -std=c++98
4639
4640 # some compilers silently accept -std=c11, so we also need to check that the
4641 # version macro is defined properly
4642 if test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L"; then
4643     add_cflags -std=c11
4644 else
4645     check_cflags -std=c99
4646 fi
4647
4648 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4649 #include <stdlib.h>
4650 EOF
4651 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4652 #include <stdlib.h>
4653 EOF
4654
4655 add_host_cppflags -D_ISOC99_SOURCE
4656 check_host_cflags -std=c99
4657 check_host_cflags -Wall
4658 check_host_cflags -O3
4659
4660 check_64bit(){
4661     arch32=$1
4662     arch64=$2
4663     expr=$3
4664     check_code cc "" "int test[2*($expr) - 1]" &&
4665         subarch=$arch64 || subarch=$arch32
4666 }
4667
4668 case "$arch" in
4669     aarch64|alpha|ia64)
4670         spic=$shared
4671     ;;
4672     mips)
4673         check_64bit mips mips64 '_MIPS_SIM > 1'
4674         spic=$shared
4675     ;;
4676     parisc)
4677         check_64bit parisc parisc64 'sizeof(void *) > 4'
4678         spic=$shared
4679     ;;
4680     ppc)
4681         check_64bit ppc ppc64 'sizeof(void *) > 4'
4682         spic=$shared
4683     ;;
4684     s390)
4685         check_64bit s390 s390x 'sizeof(void *) > 4'
4686         spic=$shared
4687     ;;
4688     sparc)
4689         check_64bit sparc sparc64 'sizeof(void *) > 4'
4690         spic=$shared
4691     ;;
4692     x86)
4693         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4694         # Treat x32 as x64 for now. Note it also needs spic=$shared
4695         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4696             subarch=x86_64
4697         if test "$subarch" = "x86_64"; then
4698             spic=$shared
4699         fi
4700     ;;
4701     ppc)
4702         check_cc <<EOF && subarch="ppc64"
4703         int test[(int)sizeof(char*) - 7];
4704 EOF
4705     ;;
4706 esac
4707
4708 enable $subarch
4709 enabled spic && enable_weak pic
4710
4711 # OS specific
4712 case $target_os in
4713     aix)
4714         SHFLAGS=-shared
4715         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4716         enabled shared && add_ldflags -Wl,-brtl
4717         ;;
4718     android)
4719         disable symver
4720         enable section_data_rel_ro
4721         SLIB_INSTALL_NAME='$(SLIBNAME)'
4722         SLIB_INSTALL_LINKS=
4723         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4724         ;;
4725     haiku)
4726         prefix_default="/boot/common"
4727         network_extralibs="-lnetwork"
4728         host_libs=
4729         ;;
4730     sunos)
4731         SHFLAGS='-shared -Wl,-h,$$(@F)'
4732         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4733         network_extralibs="-lsocket -lnsl"
4734         add_cppflags -D__EXTENSIONS__
4735         # When using suncc to build, the Solaris linker will mark
4736         # an executable with each instruction set encountered by
4737         # the Solaris assembler.  As our libraries contain their own
4738         # guards for processor-specific code, instead suppress
4739         # generation of the HWCAPS ELF section on Solaris x86 only.
4740         enabled_all suncc x86 &&
4741             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4742             add_ldflags -Wl,-M,mapfile
4743         nm_default='nm -P -g'
4744         version_script='-M'
4745         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
4746         ;;
4747     netbsd)
4748         disable symver
4749         oss_indev_extralibs="-lossaudio"
4750         oss_outdev_extralibs="-lossaudio"
4751         enabled gcc || check_ldflags -Wl,-zmuldefs
4752         ;;
4753     openbsd|bitrig)
4754         disable symver
4755         SHFLAGS='-shared'
4756         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4757         SLIB_INSTALL_LINKS=
4758         oss_indev_extralibs="-lossaudio"
4759         oss_outdev_extralibs="-lossaudio"
4760         ;;
4761     dragonfly)
4762         disable symver
4763         ;;
4764     freebsd)
4765         ;;
4766     bsd/os)
4767         add_extralibs -lpoll -lgnugetopt
4768         strip="strip -d"
4769         ;;
4770     darwin)
4771         enabled ppc && add_asflags -force_cpusubtype_ALL
4772         install_name_dir_default='$(SHLIBDIR)'
4773         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4774         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4775         strip="${strip} -x"
4776         add_ldflags -Wl,-dynamic,-search_paths_first
4777         SLIBSUF=".dylib"
4778         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4779         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4780         objformat="macho"
4781         enabled x86_64 && objformat="macho64"
4782         enabled_any pic shared x86_64 ||
4783             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4784         check_header dispatch/dispatch.h &&
4785             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
4786         version_script='-exported_symbols_list'
4787         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
4788         ;;
4789     msys*)
4790         die "Native MSYS builds are discouraged, please use the MINGW environment."
4791         ;;
4792     mingw32*|mingw64*)
4793         if test $target_os = "mingw32ce"; then
4794             disable network
4795         else
4796             target_os=mingw32
4797         fi
4798         decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
4799         decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
4800         LIBTARGET=i386
4801         if enabled x86_64; then
4802             LIBTARGET="i386:x86-64"
4803         elif enabled arm; then
4804             LIBTARGET=arm-wince
4805         fi
4806         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4807         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4808         shlibdir_default="$bindir_default"
4809         SLIBPREF=""
4810         SLIBSUF=".dll"
4811         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4812         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4813         dlltool="${cross_prefix}dlltool"
4814         if check_cmd lib.exe -list; then
4815             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4816             if enabled x86_64; then
4817                 LIBTARGET=x64
4818             fi
4819         elif check_cmd $dlltool --version; then
4820             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4821         fi
4822         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4823         SLIB_INSTALL_LINKS=
4824         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4825         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4826         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--disable-auto-image-base'
4827         objformat="win32"
4828         ranlib=:
4829         enable dos_paths
4830         check_ldflags -Wl,--nxcompat,--dynamicbase
4831         # Lets work around some stupidity in binutils.
4832         # ld will strip relocations from executables even though we need them
4833         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4834         # however ld then forgets what the entry point should be (oops) so we
4835         # have to manually (re)set it.
4836         if enabled x86_32; then
4837             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
4838         elif enabled x86_64; then
4839             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
4840             check_ldflags -Wl,--high-entropy-va # binutils 2.25
4841             # Set image base >4GB for extra entropy with HEASLR
4842             add_ldexeflags -Wl,--image-base,0x140000000
4843             append SHFLAGS -Wl,--image-base,0x180000000
4844         fi
4845         ;;
4846     win32|win64)
4847         disable symver
4848         if enabled shared; then
4849             # Link to the import library instead of the normal static library
4850             # for shared libs.
4851             LD_LIB='%.lib'
4852             # Cannot build both shared and static libs with MSVC or icl.
4853             disable static
4854         fi
4855         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4856         shlibdir_default="$bindir_default"
4857         SLIBPREF=""
4858         SLIBSUF=".dll"
4859         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4860         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4861         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4862         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4863         SLIB_INSTALL_LINKS=
4864         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4865         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4866         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4867         objformat="win32"
4868         ranlib=:
4869         enable dos_paths
4870         ;;
4871     cygwin*)
4872         target_os=cygwin
4873         shlibdir_default="$bindir_default"
4874         SLIBPREF="cyg"
4875         SLIBSUF=".dll"
4876         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4877         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4878         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4879         SLIB_INSTALL_LINKS=
4880         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4881         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4882         objformat="win32"
4883         enable dos_paths
4884         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4885         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4886         ;;
4887     *-dos|freedos|opendos)
4888         network_extralibs="-lsocket"
4889         objformat="coff"
4890         enable dos_paths
4891         add_cppflags -U__STRICT_ANSI__
4892         ;;
4893     linux)
4894         enable dv1394
4895         enable section_data_rel_ro
4896         ;;
4897     irix*)
4898         target_os=irix
4899         ranlib="echo ignoring ranlib"
4900         ;;
4901     os/2*)
4902         strip="lxlite -CS"
4903         objformat="aout"
4904         add_cppflags -D_GNU_SOURCE
4905         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4906         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4907         LIBSUF="_s.a"
4908         SLIBPREF=""
4909         SLIBSUF=".dll"
4910         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4911         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4912         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
4913             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
4914             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
4915             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
4916             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
4917         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
4918             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
4919         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4920         SLIB_INSTALL_LINKS=
4921         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
4922         enable dos_paths
4923         enable_weak os2threads
4924         ;;
4925     gnu/kfreebsd)
4926         add_cppflags -D_BSD_SOURCE
4927         ;;
4928     gnu)
4929         ;;
4930     qnx)
4931         add_cppflags -D_QNX_SOURCE
4932         network_extralibs="-lsocket"
4933         ;;
4934     symbian)
4935         SLIBSUF=".dll"
4936         enable dos_paths
4937         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4938         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4939         add_ldflags -Wl,--target1-abs,--no-undefined \
4940                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4941                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4942         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4943                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4944                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4945         ;;
4946     osf1)
4947         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4948         ;;
4949     minix)
4950         ;;
4951     plan9)
4952         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4953                      -D_REENTRANT_SOURCE        \
4954                      -D_RESEARCH_SOURCE         \
4955                      -DFD_SETSIZE=96            \
4956                      -DHAVE_SOCK_OPTS
4957         add_compat strtod.o strtod=avpriv_strtod
4958         network_extralibs='-lbsd'
4959         exeobjs=compat/plan9/main.o
4960         disable ffserver
4961         cp_f='cp'
4962         ;;
4963     none)
4964         ;;
4965     *)
4966         die "Unknown OS '$target_os'."
4967         ;;
4968 esac
4969
4970 # test if creating links works
4971 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
4972 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
4973 mkdir "$link_dest"
4974 $ln_s "$link_dest" "$link_name"
4975 touch "$link_dest/test_file"
4976 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
4977     # create link to source path
4978     [ -e src ] && rm src
4979     $ln_s "$source_path" src
4980     source_link=src
4981 else
4982     # creating directory links doesn't work
4983     # fall back to using the full source path
4984     source_link="$source_path"
4985 fi
4986 # cleanup
4987 rm -r "$link_dest"
4988 rm -r "$link_name"
4989
4990 # determine libc flavour
4991
4992 probe_libc(){
4993     pfx=$1
4994     pfx_no_=${pfx%_}
4995     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4996     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4997         eval ${pfx}libc_type=uclibc
4998         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4999     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5000         eval ${pfx}libc_type=glibc
5001         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5002     # MinGW headers can be installed on Cygwin, so check for newlib first.
5003     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5004         eval ${pfx}libc_type=newlib
5005         add_${pfx}cppflags -U__STRICT_ANSI__
5006     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5007     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5008         eval ${pfx}libc_type=mingw64
5009         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5010             add_compat msvcrt/snprintf.o
5011             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5012         fi
5013         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5014         eval test \$${pfx_no_}cc_type = "gcc" &&
5015             add_${pfx}cppflags -D__printf__=__gnu_printf__
5016     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5017          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5018         eval ${pfx}libc_type=mingw32
5019         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5020             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5021             die "ERROR: MinGW32 runtime version must be >= 3.15."
5022         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5023         check_${pfx}cpp_condition _mingw.h "defined(_WIN32_WINNT) && _WIN32_WINNT >= 0x0502" ||
5024             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
5025         eval test \$${pfx_no_}cc_type = "gcc" &&
5026             add_${pfx}cppflags -D__printf__=__gnu_printf__
5027     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5028         eval ${pfx}libc_type=msvcrt
5029         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5030             if [ "$pfx" = host_ ]; then
5031                 add_host_cppflags -Dsnprintf=_snprintf
5032             else
5033                 add_compat strtod.o strtod=avpriv_strtod
5034                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5035                                              _snprintf=avpriv_snprintf  \
5036                                              vsnprintf=avpriv_vsnprintf
5037             fi
5038         fi
5039         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5040         # 0x601 by default unless something else is set by the user.
5041         # This can easily lead to us detecting functions only present
5042         # in such new versions and producing binaries requiring windows 7.0.
5043         # Therefore explicitly set the default to XP unless the user has
5044         # set something else on the command line.
5045         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5046         # family. For these cases, configure is free to use any functions
5047         # found in the SDK headers by default. (Alternatively, we could force
5048         # _WIN32_WINNT to 0x0602 in that case.)
5049         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5050             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
5051 #ifdef WINAPI_FAMILY
5052 #include <winapifamily.h>
5053 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5054 #error not desktop
5055 #endif
5056 #endif
5057 EOF
5058         if [ "$pfx" = "" ]; then
5059             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5060             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5061         fi
5062     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5063         eval ${pfx}libc_type=klibc
5064     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5065         eval ${pfx}libc_type=bionic
5066     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5067         eval ${pfx}libc_type=solaris
5068         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5069     fi
5070     check_${pfx}cc <<EOF
5071 #include <time.h>
5072 void *v = localtime_r;
5073 EOF
5074 test "$?" != 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
5075 #include <time.h>
5076 void *v = localtime_r;
5077 EOF
5078
5079 }
5080
5081 probe_libc
5082 test -n "$libc_type" && enable libc_$libc_type
5083 probe_libc host_
5084 test -n "$host_libc_type" && enable host_libc_$host_libc_type
5085
5086 case $libc_type in
5087     bionic)
5088         add_compat strtod.o strtod=avpriv_strtod
5089         ;;
5090 esac
5091
5092 # hacks for compiler/libc/os combinations
5093
5094 if enabled_all tms470 libc_glibc; then
5095     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
5096     add_cppflags -D__USER_LABEL_PREFIX__=
5097     add_cppflags -D__builtin_memset=memset
5098     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
5099     add_cflags   -pds=48    # incompatible redefinition of macro
5100 fi
5101
5102 if enabled_all ccc libc_glibc; then
5103     add_ldflags -Wl,-z,now  # calls to libots crash without this
5104 fi
5105
5106 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5107     add_cppflags '-I\$(SRC_PATH)/compat/float'
5108
5109 esc(){
5110     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
5111 }
5112
5113 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
5114
5115 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5116
5117 set_default libdir
5118 : ${shlibdir_default:="$libdir"}
5119 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5120
5121 set_default $PATHS_LIST
5122 set_default nm
5123
5124 # we need to build at least one lib type
5125 if ! enabled_any static shared; then
5126     cat <<EOF
5127 At least one library type must be built.
5128 Specify --enable-static to build the static libraries or --enable-shared to
5129 build the shared libraries as well. To only build the shared libraries specify
5130 --disable-static in addition to --enable-shared.
5131 EOF
5132     exit 1
5133 fi
5134
5135 die_license_disabled() {
5136     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
5137 }
5138
5139 die_license_disabled_gpl() {
5140     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
5141 }
5142
5143 die_license_disabled gpl frei0r
5144 die_license_disabled gpl libcdio
5145 die_license_disabled gpl librubberband
5146 die_license_disabled gpl libsmbclient
5147 die_license_disabled gpl libvidstab
5148 die_license_disabled gpl libx264
5149 die_license_disabled gpl libx265
5150 die_license_disabled gpl libxavs
5151 die_license_disabled gpl libxvid
5152 die_license_disabled gpl x11grab
5153
5154 die_license_disabled nonfree libnpp
5155 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
5156 enabled gpl && die_license_disabled_gpl nonfree openssl
5157
5158 die_license_disabled version3 gmp
5159 die_license_disabled version3 libopencore_amrnb
5160 die_license_disabled version3 libopencore_amrwb
5161 die_license_disabled version3 libsmbclient
5162 die_license_disabled version3 libvo_amrwbenc
5163
5164 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
5165
5166 disabled optimizations || check_cflags -fomit-frame-pointer
5167
5168 enable_weak_pic() {
5169     disabled pic && return
5170     enable pic
5171     add_cppflags -DPIC
5172     case "$target_os" in
5173     mingw*|cygwin*)
5174         ;;
5175     *)
5176         add_cflags -fPIC
5177         ;;
5178     esac
5179     add_asflags  -fPIC
5180 }
5181
5182 enabled pic && enable_weak_pic
5183
5184 check_cc <<EOF || die "Symbol mangling check failed."
5185 int ff_extern;
5186 EOF
5187 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5188 extern_prefix=${sym%%ff_extern*}
5189
5190 check_cc <<EOF && enable_weak inline_asm
5191 void foo(void) { __asm__ volatile ("" ::); }
5192 EOF
5193
5194 _restrict=
5195 for restrict_keyword in restrict __restrict__ __restrict; do
5196     check_cc <<EOF && _restrict=$restrict_keyword && break
5197 void foo(char * $restrict_keyword p);
5198 EOF
5199 done
5200
5201 check_cc <<EOF && enable pragma_deprecated
5202 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
5203 EOF
5204
5205 check_cc <<EOF && enable attribute_packed
5206 struct { int x; } __attribute__((packed)) x;
5207 EOF
5208
5209 check_cc <<EOF && enable attribute_may_alias
5210 union { int x; } __attribute__((may_alias)) x;
5211 EOF
5212
5213 check_cc <<EOF || die "endian test failed"
5214 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5215 EOF
5216 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5217
5218 if ! enabled ppc64 || enabled bigendian; then
5219     disable vsx
5220 fi
5221
5222 check_gas() {
5223     log "check_gas using '$as' as AS"
5224     # :vararg is used on aarch64, arm and ppc altivec
5225     check_as <<EOF || return 1
5226 .macro m n, y:vararg=0
5227 \n: .int \y
5228 .endm
5229 m x
5230 EOF
5231     # .altmacro is only used in arm asm
5232     ! enabled arm || check_as <<EOF || return 1
5233 .altmacro
5234 EOF
5235     enable gnu_as
5236     return 0
5237 }
5238
5239 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5240     nogas=:
5241     enabled_any arm aarch64 && nogas=die
5242     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5243     as_noop=-v
5244
5245     case $as_type in
5246         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5247         gcc)  gaspp_as_type=gas ;;
5248         *)    gaspp_as_type=$as_type ;;
5249     esac
5250
5251     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5252
5253     test "${as#*gas-preprocessor.pl}" != "$as" ||
5254     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5255         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5256
5257     if ! check_gas ; then
5258         as=${gas:=$as}
5259         check_gas || \
5260             $nogas "GNU assembler not found, install/update gas-preprocessor"
5261     fi
5262
5263     check_as <<EOF && enable as_func
5264 .func test
5265 .endfunc
5266 EOF
5267 fi
5268
5269 check_inline_asm inline_asm_labels '"1:\n"'
5270
5271 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5272
5273 if enabled aarch64; then
5274     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5275     # internal assembler in clang 3.3 does not support this instruction
5276     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5277     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5278
5279     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5280
5281 elif enabled alpha; then
5282
5283     check_cflags -mieee
5284
5285 elif enabled arm; then
5286
5287     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
5288
5289     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
5290 float func(float a, float b){ return a+b; }
5291 EOF
5292
5293     enabled thumb && check_cflags -mthumb || check_cflags -marm
5294
5295     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
5296         enable vfp_args
5297     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5298         enable vfp_args
5299     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5300         case "${cross_prefix:-$cc}" in
5301             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
5302             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
5303 __asm__ (".eabi_attribute 28, 1");
5304 int main(void) { return 0; }
5305 EOF
5306         esac
5307         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5308     fi
5309
5310     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5311     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5312     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5313     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5314     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5315     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5316     enabled setend  && check_insn setend  'setend be'
5317
5318     [ $target_os = linux ] || [ $target_os = android ] ||
5319         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5320             $ARCH_EXT_LIST_ARM
5321
5322     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5323
5324     check_as <<EOF && enable as_dn_directive
5325 ra .dn d0.i16
5326 .unreq ra
5327 EOF
5328     check_as <<EOF && enable as_fpu_directive
5329 .fpu neon
5330 EOF
5331
5332     # llvm's integrated assembler supports .object_arch from llvm 3.5
5333     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
5334 .object_arch armv4
5335 EOF
5336
5337     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5338
5339 elif enabled mips; then
5340
5341     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5342     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5343     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5344
5345     # Enable minimum ISA based on selected options
5346     if enabled mips64; then
5347         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5348         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5349         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5350     else
5351         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5352         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5353         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5354         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5355     fi
5356
5357     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5358     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5359     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
5360     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5361     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5362
5363 elif enabled parisc; then
5364
5365     if enabled gcc; then
5366         case $($cc -dumpversion) in
5367             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5368         esac
5369     fi
5370
5371 elif enabled ppc; then
5372
5373     enable local_aligned_8 local_aligned_16 local_aligned_32
5374
5375     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5376     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5377     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5378     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5379
5380     # AltiVec flags: The FSF version of GCC differs from the Apple version
5381     if enabled altivec; then
5382         check_cflags -maltivec -mabi=altivec &&
5383         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
5384         check_cflags -faltivec
5385
5386         # check if our compiler supports Motorola AltiVec C API
5387         check_cc <<EOF || disable altivec
5388 $inc_altivec_h
5389 int main(void) {
5390     vector signed int v1 = (vector signed int) { 0 };
5391     vector signed int v2 = (vector signed int) { 1 };
5392     v1 = vec_add(v1, v2);
5393     return 0;
5394 }
5395 EOF
5396
5397         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5398     fi
5399
5400     if enabled vsx; then
5401         check_cflags -mvsx &&
5402         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
5403     fi
5404
5405     if enabled power8; then
5406         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
5407     fi
5408
5409 elif enabled x86; then
5410
5411     check_builtin rdtsc    intrin.h   "__rdtsc()"
5412     check_builtin mm_empty mmintrin.h "_mm_empty()"
5413
5414     enable local_aligned_8 local_aligned_16 local_aligned_32
5415
5416     # check whether EBP is available on x86
5417     # As 'i' is stored on the stack, this program will crash
5418     # if the base pointer is used to access it because the
5419     # base pointer is cleared in the inline assembly code.
5420     check_exec_crash <<EOF && enable ebp_available
5421 volatile int i=0;
5422 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5423 return i;
5424 EOF
5425
5426     # check whether EBX is available on x86
5427     check_inline_asm ebx_available '""::"b"(0)' &&
5428         check_inline_asm ebx_available '"":::"%ebx"'
5429
5430     # check whether xmm clobbers are supported
5431     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5432
5433     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5434         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5435
5436     # check whether binutils is new enough to compile SSSE3/MMXEXT
5437     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5438     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5439
5440     if ! disabled_any asm mmx yasm; then
5441         if check_cmd $yasmexe --version; then
5442             enabled x86_64 && yasm_extra="-m amd64"
5443             yasm_debug="-g dwarf2"
5444         elif check_cmd nasm -v; then
5445             yasmexe=nasm
5446             yasm_debug="-g -F dwarf"
5447             if enabled x86_64; then
5448                 case "$objformat" in
5449                     elf)   objformat=elf64 ;;
5450                     win32) objformat=win64 ;;
5451                 esac
5452             fi
5453         fi
5454
5455         YASMFLAGS="-f $objformat $yasm_extra"
5456         enabled pic               && append YASMFLAGS "-DPIC"
5457         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
5458         case "$objformat" in
5459             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
5460         esac
5461
5462         check_yasm "movbe ecx, [5]" && enable yasm ||
5463             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
5464         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
5465         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
5466         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
5467         check_yasm "CPU amdnop" || disable cpunop
5468     fi
5469
5470     case "$cpu" in
5471         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5472             disable fast_clz
5473         ;;
5474     esac
5475
5476 fi
5477
5478 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
5479
5480 check_ldflags -Wl,--as-needed
5481 check_ldflags -Wl,-z,noexecstack
5482
5483 if check_func dlopen && check_func dlsym; then
5484     ldl=
5485 elif check_func dlopen -ldl && check_func dlsym -ldl; then
5486     ldl=-ldl
5487 fi
5488
5489 avisynth_demuxer_extralibs='$ldl'
5490 cuda_extralibs='$ldl'
5491 decklink_outdev_extralibs="$decklink_outdev_extralibs $ldl"
5492 decklink_indev_extralibs="$decklink_indev_extralibs $ldl"
5493 frei0r_filter_extralibs='$ldl'
5494 frei0r_src_filter_extralibs='$ldl'
5495 ladspa_filter_extralibs='$ldl'
5496 nvenc_extralibs='$ldl'
5497 coreimage_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5498 coreimagesrc_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5499
5500 if ! disabled network; then
5501     check_func getaddrinfo $network_extralibs
5502     check_func inet_aton $network_extralibs
5503
5504     check_type netdb.h "struct addrinfo"
5505     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5506     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5507     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5508     check_type poll.h "struct pollfd"
5509     check_type netinet/sctp.h "struct sctp_event_subscribe"
5510     check_struct "sys/socket.h" "struct msghdr" msg_flags
5511     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5512     check_type netinet/in.h "struct sockaddr_in6"
5513     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5514     check_type "sys/types.h sys/socket.h" socklen_t
5515
5516     # Prefer arpa/inet.h over winsock2
5517     if check_header arpa/inet.h ; then
5518         check_func closesocket
5519     elif check_header winsock2.h ; then
5520         check_func_headers winsock2.h closesocket -lws2 &&
5521             network_extralibs="-lws2" ||
5522         { check_func_headers winsock2.h closesocket -lws2_32 &&
5523             network_extralibs="-lws2_32"; } || disable winsock2_h network
5524         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5525
5526         check_type ws2tcpip.h socklen_t
5527         check_type ws2tcpip.h "struct addrinfo"
5528         check_type ws2tcpip.h "struct group_source_req"
5529         check_type ws2tcpip.h "struct ip_mreq_source"
5530         check_type ws2tcpip.h "struct ipv6_mreq"
5531         check_type winsock2.h "struct pollfd"
5532         check_struct winsock2.h "struct sockaddr" sa_len
5533         check_type ws2tcpip.h "struct sockaddr_in6"
5534         check_type ws2tcpip.h "struct sockaddr_storage"
5535     else
5536         disable network
5537     fi
5538 fi
5539
5540 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5541 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5542 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5543 check_builtin sarestart signal.h "SA_RESTART"
5544 check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" -lpthread
5545 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5546 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5547 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5548 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5549
5550 case "$custom_allocator" in
5551     jemalloc)
5552         # jemalloc by default does not use a prefix
5553         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5554     ;;
5555     tcmalloc)
5556         require_pkg_config libtcmalloc gperftools/tcmalloc.h tc_malloc
5557         malloc_prefix=tc_
5558     ;;
5559 esac
5560
5561 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5562 check_func  ${malloc_prefix}memalign            && enable memalign
5563 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5564
5565 check_func  access
5566 check_func_headers stdlib.h arc4random
5567 check_func_headers time.h clock_gettime || { check_func_headers time.h clock_gettime -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
5568 check_func  fcntl
5569 check_func  fork
5570 check_func  gethrtime
5571 check_func  getopt
5572 check_func  getrusage
5573 check_func  gettimeofday
5574 check_func  isatty
5575 check_func  mach_absolute_time
5576 check_func  mkstemp
5577 check_func  mmap
5578 check_func  mprotect
5579 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5580 check_func_headers time.h nanosleep || { check_func_headers time.h nanosleep -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
5581 check_func  sched_getaffinity
5582 check_func  setrlimit
5583 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5584 check_func  strerror_r
5585 check_func  sysconf
5586 check_func  sysctl
5587 check_func  usleep
5588
5589 check_func_headers conio.h kbhit
5590 check_func_headers io.h setmode
5591 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5592 check_func_headers stdlib.h getenv
5593 check_func_headers sys/stat.h lstat
5594
5595 check_func_headers windows.h CoTaskMemFree -lole32
5596 check_func_headers windows.h GetProcessAffinityMask
5597 check_func_headers windows.h GetProcessTimes
5598 check_func_headers windows.h GetSystemTimeAsFileTime
5599 check_func_headers windows.h LoadLibrary
5600 check_func_headers windows.h MapViewOfFile
5601 check_func_headers windows.h PeekNamedPipe
5602 check_func_headers windows.h SetConsoleTextAttribute
5603 check_func_headers windows.h SetConsoleCtrlHandler
5604 check_func_headers windows.h Sleep
5605 check_func_headers windows.h VirtualAlloc
5606 check_struct windows.h "CONDITION_VARIABLE" Ptr
5607 check_func_headers glob.h glob
5608 enabled xlib &&
5609     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5610
5611 check_header AudioToolbox/AudioToolbox.h
5612 check_header direct.h
5613 check_header dirent.h
5614 check_header dlfcn.h
5615 check_header d3d11.h
5616 check_header dxva.h
5617 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5618 check_header io.h
5619 check_header libcrystalhd/libcrystalhd_if.h
5620 check_header mach/mach_time.h
5621 check_header malloc.h
5622 check_header net/udplite.h
5623 check_header poll.h
5624 check_header sys/mman.h
5625 check_header sys/param.h
5626 check_header sys/resource.h
5627 check_header sys/select.h
5628 check_header sys/time.h
5629 check_header sys/un.h
5630 check_header termios.h
5631 check_header unistd.h
5632 check_header valgrind/valgrind.h
5633 check_header vdpau/vdpau.h
5634 check_header vdpau/vdpau_x11.h
5635 check_header VideoDecodeAcceleration/VDADecoder.h
5636 check_header VideoToolbox/VideoToolbox.h
5637 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5638 enabled videotoolbox && check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferColorPrimaries_ITU_R_2020 -framework CoreVideo
5639 check_header windows.h
5640 check_header X11/extensions/XvMClib.h
5641 check_header asm/types.h
5642
5643 # it seems there are versions of clang in some distros that try to use the
5644 # gcc headers, which explodes for stdatomic
5645 # so we also check that atomics actually work here
5646 check_builtin stdatomic_h stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0)"
5647
5648 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
5649 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
5650 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
5651 check_lib "CoreServices/CoreServices.h" UTGetOSTypeFromString "-framework CoreServices"
5652
5653 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5654
5655 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5656 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5657 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5658 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5659 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5660
5661 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
5662 check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
5663 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
5664 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
5665 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5666 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5667 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
5668 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
5669
5670 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5671
5672 check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt
5673
5674 if ! disabled w32threads && ! enabled pthreads; then
5675     check_func_headers "windows.h process.h" _beginthreadex &&
5676         enable w32threads || disable w32threads
5677     if ! enabled w32threads && enabled winrt; then
5678         check_func_headers "windows.h" CreateThread &&
5679             enable w32threads || disable w32threads
5680     fi
5681 fi
5682
5683 # check for some common methods of building with pthread support
5684 # do this before the optional library checks as some of them require pthreads
5685 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5686     enable pthreads
5687     if check_func pthread_join -pthread && check_func pthread_create -pthread; then
5688         add_cflags -pthread
5689         add_extralibs -pthread
5690     elif check_func pthread_join -pthreads && check_func pthread_create -pthreads; then
5691         add_cflags -pthreads
5692         add_extralibs -pthreads
5693     elif check_func pthread_join -ldl -pthread && check_func pthread_create -ldl -pthread; then
5694         add_cflags -ldl -pthread
5695         add_extralibs -ldl -pthread
5696     elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
5697         add_extralibs -lpthreadGC2
5698     elif check_lib pthread.h pthread_join -lpthread && check_lib pthread.h pthread_create -lpthread; then
5699         :
5700     elif ! check_func pthread_join && ! check_func pthread_create; then
5701         disable pthreads
5702     fi
5703     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5704 fi
5705
5706
5707 if enabled pthreads; then
5708   check_func pthread_cancel
5709 fi
5710
5711 enabled pthreads &&
5712     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)"
5713
5714 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
5715 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
5716 disabled  lzma || check_lib2  lzma.h lzma_version_number -llzma || disable lzma
5717
5718 check_lib math.h sin -lm && LIBM="-lm"
5719 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
5720
5721 atan2f_args=2
5722 copysign_args=2
5723 hypot_args=2
5724 ldexpf_args=2
5725 powf_args=2
5726
5727 for func in $MATH_FUNCS; do
5728     eval check_mathfunc $func \${${func}_args:-1}
5729 done
5730
5731 for func in $COMPLEX_FUNCS; do
5732     eval check_complexfunc $func \${${func}_args:-1}
5733 done
5734
5735 # these are off by default, so fail if requested and not available
5736 enabled avfoundation_indev && { check_header_objcc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
5737 enabled avfoundation_indev && { check_lib2 CoreGraphics/CoreGraphics.h CGGetActiveDisplayList -framework CoreGraphics ||
5738                                 check_lib2 ApplicationServices/ApplicationServices.h CGGetActiveDisplayList -framework ApplicationServices; }
5739 enabled cuda              && check_header cuda.h # this is not a dependency
5740 enabled cuvid             && { enabled cuda ||
5741                                die "ERROR: CUVID requires CUDA"; }
5742 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5743 enabled coreimage_filter  && { check_header_objcc QuartzCore/CoreImage.h || disable coreimage_filter; }
5744 enabled coreimagesrc_filter && { check_header_objcc QuartzCore/CoreImage.h || disable coreimagesrc_filter; }
5745 enabled decklink          && { { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; } &&
5746                                { check_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a060100" || die "ERROR: Decklink API version must be >= 10.6.1."; } }
5747 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
5748 enabled gmp               && require2 gmp gmp.h mpz_export -lgmp
5749 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
5750 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads &&
5751                                check_lib2 "dlfcn.h" dlopen -ldl; }
5752 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
5753 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5754 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
5755 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
5756 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
5757 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5758                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
5759                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5760 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
5761 enabled libfdk_aac        && { use_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5762                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5763                                  warn "using libfdk without pkg-config"; } }
5764 flite_libs="-lflite_cmu_time_awb -lflite_cmu_us_awb -lflite_cmu_us_kal -lflite_cmu_us_kal16 -lflite_cmu_us_rms -lflite_cmu_us_slt -lflite_usenglish -lflite_cmulex -lflite"
5765 enabled libflite          && require2 libflite "flite/flite.h" flite_init $flite_libs
5766 enabled fontconfig        && enable libfontconfig
5767 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
5768 enabled libfreetype       && require_libfreetype
5769 enabled libfribidi        && require_pkg_config fribidi fribidi.h fribidi_version_info
5770 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
5771 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5772                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
5773                                done || die "ERROR: libgsm not found"; }
5774 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
5775 enabled libkvazaar        && require_pkg_config "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
5776 enabled libmfx            && require_pkg_config libmfx "mfx/mfxvideo.h" MFXInit
5777 enabled libmodplug        && require_pkg_config libmodplug libmodplug/modplug.h ModPlug_Load
5778 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5779 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
5780 enabled libnpp            && require libnpp npp.h nppGetLibVersion -lnppi -lnppc
5781 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5782 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5783 enabled libopencv         && { check_header opencv2/core/core_c.h &&
5784                                { use_pkg_config opencv opencv2/core/core_c.h cvCreateImageHeader ||
5785                                  require opencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
5786                                require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader; }
5787 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
5788 enabled libopenjpeg       && { { check_lib2 openjpeg-2.1/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5789                                check_lib2 openjpeg-2.1/openjpeg.h opj_version -lopenjp2 ||
5790                                { check_lib2 openjpeg-2.0/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5791                                { check_lib2 openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5792                                { check_lib2 openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5793                                die "ERROR: libopenjpeg not found"; }
5794 enabled libopenmpt        && require_pkg_config "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create
5795 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
5796 enabled libpulse          && require_pkg_config libpulse pulse/pulseaudio.h pa_context_new
5797 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
5798 enabled librubberband     && require_pkg_config "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new
5799 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
5800 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
5801 enabled libsmbclient      && { use_pkg_config smbclient libsmbclient.h smbc_init ||
5802                                require smbclient libsmbclient.h smbc_init -lsmbclient; }
5803 enabled libsnappy         && require snappy snappy-c.h snappy_compress -lsnappy
5804 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr && LIBSOXR="-lsoxr"
5805 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
5806 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
5807 enabled libtesseract      && require_pkg_config tesseract tesseract/capi.h TessBaseAPICreate
5808 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
5809 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
5810                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
5811                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
5812 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
5813 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
5814 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
5815 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
5816
5817 enabled libvpx            && {
5818     enabled libvpx_vp8_decoder && {
5819         use_pkg_config "vpx >= 0.9.1" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
5820             check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
5821                 die "ERROR: libvpx decoder version must be >=0.9.1";
5822     }
5823     enabled libvpx_vp8_encoder && {
5824         use_pkg_config "vpx >= 0.9.7" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
5825             check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
5826                 die "ERROR: libvpx encoder version must be >=0.9.7";
5827     }
5828     enabled libvpx_vp9_decoder && {
5829         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
5830             check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx ||
5831                 disable libvpx_vp9_decoder;
5832     }
5833     enabled libvpx_vp9_encoder && {
5834         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
5835             check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx ||
5836                 disable libvpx_vp9_encoder;
5837     }
5838     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
5839         die "libvpx enabled but no supported decoders found"
5840     fi
5841 }
5842
5843 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
5844 enabled libwebp           && {
5845     enabled libwebp_encoder      && require_pkg_config "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
5846     enabled libwebp_anim_encoder && { use_pkg_config "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit || disable libwebp_anim_encoder; } }
5847 enabled libx264           && { use_pkg_config x264 "stdint.h x264.h" x264_encoder_encode ||
5848                                { require libx264 x264.h x264_encoder_encode -lx264 &&
5849                                  warn "using libx264 without pkg-config"; } } &&
5850                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
5851                                die "ERROR: libx264 must be installed and version must be >= 0.118."; } &&
5852                              { check_cpp_condition x264.h "X264_MPEG2" &&
5853                                enable libx262; }
5854 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
5855                              { check_cpp_condition x265.h "X265_BUILD >= 68" ||
5856                                die "ERROR: libx265 version must be >= 68."; }
5857 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
5858 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
5859 enabled libzimg           && require_pkg_config "zimg >= 2.3.0" zimg.h zimg_get_api_version
5860 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
5861 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi &&
5862                              { check_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
5863                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
5864 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
5865 enabled mmal              && { check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
5866                                 { ! enabled cross_compile && {
5867                                     add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline ;
5868                                     add_extralibs -L/opt/vc/lib/ -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ;
5869                                     check_lib interface/mmal/mmal.h mmal_port_connect ; }
5870                                 check_lib interface/mmal/mmal.h mmal_port_connect ; } ||
5871                                die "ERROR: mmal not found"; }
5872 enabled mmal && check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"
5873
5874 enabled netcdf            && require_pkg_config netcdf netcdf.h nc_inq_libvers
5875 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
5876                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
5877                                die "ERROR: openal not found"; } &&
5878                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
5879                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
5880 enabled opencl            && { check_lib2 OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
5881                                check_lib2 CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
5882                                die "ERROR: opencl not found"; } &&
5883                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
5884                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
5885                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
5886 enabled opengl            && { check_lib GL/glx.h glXGetProcAddress "-lGL" ||
5887                                check_lib2 windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
5888                                check_lib2 OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
5889                                check_lib2 ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
5890                                die "ERROR: opengl not found."
5891                              }
5892 enabled omx_rpi && enable omx
5893 enabled omx               && { check_header OMX_Core.h ||
5894                                 { ! enabled cross_compile && enabled omx_rpi && {
5895                                     add_cflags -isystem/opt/vc/include/IL ; }
5896                                 check_header OMX_Core.h ; } ||
5897                                die "ERROR: OpenMAX IL headers not found"; }
5898 enabled openssl           && { use_pkg_config openssl openssl/ssl.h OPENSSL_init_ssl ||
5899                                use_pkg_config openssl openssl/ssl.h SSL_library_init ||
5900                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
5901                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
5902                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
5903                                die "ERROR: openssl not found"; }
5904 enabled qtkit_indev      && { check_header_objcc QTKit/QTKit.h || disable qtkit_indev; }
5905
5906 # libdc1394 check
5907 if enabled libdc1394; then
5908     { require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new &&
5909         enable libdc1394_2; } ||
5910     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
5911         enable libdc1394_1; } ||
5912     die "ERROR: No version of libdc1394 found "
5913 fi
5914
5915 if enabled gcrypt; then
5916     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
5917     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
5918         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
5919         gcrypt_libs=$("${GCRYPT_CONFIG}" --libs)
5920         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_libs ||
5921             die "ERROR: gcrypt not found"
5922         add_cflags $gcrypt_cflags && add_extralibs $gcrypt_libs
5923     else
5924         require2 gcrypt gcrypt.h gcry_mpi_new -lgcrypt
5925     fi
5926 fi
5927
5928 disabled sdl && disable sdl2
5929 if ! disabled sdl2; then
5930     SDL2_CONFIG="${cross_prefix}sdl2-config"
5931     if check_pkg_config sdl2 SDL_events.h SDL_PollEvent; then
5932         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
5933         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
5934         check_func SDL_Init $sdl2_libs $sdl2_cflags && enable sdl2
5935     else
5936       if "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
5937         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
5938         sdl2_libs=$("${SDL2_CONFIG}" --libs)
5939         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
5940         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
5941         check_func SDL_Init $sdl2_libs $sdl2_cflags && enable sdl2
5942       fi
5943     fi
5944     if test $target_os = "mingw32"; then
5945         sdl2_libs="$sdl2_libs -mconsole"
5946     fi
5947 fi
5948 enabled sdl2 && enable sdl && add_cflags $sdl2_cflags && add_extralibs $sdl2_libs
5949
5950 disabled securetransport || { check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5951     check_lib2 "Security/SecureTransport.h Security/Security.h" "SSLCreateContext SecItemImport" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5952     enable securetransport; }
5953
5954 disabled schannel || { check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
5955                        check_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" && enable schannel && add_extralibs -lsecur32; }
5956
5957 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
5958 enabled makeinfo \
5959     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
5960     && enable makeinfo_html || disable makeinfo_html
5961 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
5962 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
5963 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
5964 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
5965
5966 check_header linux/fb.h
5967 check_header linux/videodev.h
5968 check_header linux/videodev2.h
5969 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5970
5971 check_header sys/videoio.h
5972 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5973
5974 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
5975 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
5976 # w32api 3.12 had it defined wrong
5977 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
5978
5979 check_type "dshow.h" IBaseFilter
5980
5981 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
5982 { check_header dev/bktr/ioctl_meteor.h &&
5983   check_header dev/bktr/ioctl_bt848.h; } ||
5984 { check_header machine/ioctl_meteor.h &&
5985   check_header machine/ioctl_bt848.h; } ||
5986 { check_header dev/video/meteor/ioctl_meteor.h &&
5987   check_header dev/video/bktr/ioctl_bt848.h; } ||
5988 check_header dev/ic/bt8xx.h
5989
5990 check_header sndio.h
5991 if check_struct sys/soundcard.h audio_buf_info bytes; then
5992     enable_safe sys/soundcard.h
5993 else
5994     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
5995     #include <sys/soundcard.h>
5996     audio_buf_info abc;
5997 EOF
5998 fi
5999 check_header soundcard.h
6000
6001 enabled_any alsa_indev alsa_outdev &&
6002     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
6003
6004 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack &&
6005     check_func jack_port_get_latency_range -ljack
6006
6007 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
6008
6009 if enabled libcdio; then
6010     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6011     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6012     die "ERROR: No usable libcdio/cdparanoia found"
6013 fi
6014
6015 enabled xlib &&
6016     check_lib X11/Xlib.h XOpenDisplay -lX11 || disable xlib
6017
6018 if ! disabled libxcb; then
6019     check_pkg_config "xcb >= 1.4" xcb/xcb.h xcb_connect || {
6020         enabled libxcb && die "ERROR: libxcb >= 1.4 not found";
6021     } && disable x11grab && enable libxcb
6022
6023 if enabled libxcb; then
6024     disabled libxcb_shm || {
6025         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
6026             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
6027         } && check_header sys/shm.h && enable libxcb_shm; }
6028
6029     disabled libxcb_xfixes || {
6030         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
6031             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
6032         } && enable libxcb_xfixes; }
6033
6034     disabled libxcb_shape || {
6035         check_pkg_config xcb-shape xcb/shape.h xcb_shape_get_rectangles || {
6036             enabled libxcb_shape && die "ERROR: libxcb_shape not found";
6037         } && enable libxcb_shape; }
6038
6039     add_cflags $xcb_cflags $xcb_shm_cflags $xcb_xfixes_cflags $xcb_shape_cflags
6040     add_extralibs $xcb_libs $xcb_shm_libs $xcb_xfixes_libs $xcb_shape_libs
6041 fi
6042 fi
6043
6044 if enabled x11grab; then
6045     enabled xlib || die "ERROR: Xlib not found"
6046     require Xext X11/extensions/XShm.h XShmCreateImage -lXext
6047     require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
6048 fi
6049
6050 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6051
6052 enabled dxva2api_h &&
6053     check_cc <<EOF && enable dxva2api_cobj
6054 #define _WIN32_WINNT 0x0600
6055 #define COBJMACROS
6056 #include <windows.h>
6057 #include <d3d9.h>
6058 #include <dxva2api.h>
6059 int main(void) { IDirectXVideoDecoder *o = NULL; IDirectXVideoDecoder_Release(o); return 0; }
6060 EOF
6061
6062 enabled vaapi &&
6063     check_lib va/va.h vaInitialize -lva ||
6064     disable vaapi
6065
6066 enabled vaapi &&
6067     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
6068     disable vaapi
6069
6070 if enabled vaapi ; then
6071     enabled xlib &&
6072     check_lib2 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 &&
6073     enable vaapi_x11
6074
6075     check_lib2 "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm &&
6076     enable vaapi_drm
6077 fi
6078
6079 enabled vdpau &&
6080     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
6081     disable vdpau
6082
6083 enabled vdpau && enabled xlib &&
6084     check_lib2 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
6085     enable vdpau_x11
6086
6087 if enabled x86; then
6088     case $target_os in
6089         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6090             ;;
6091         *)
6092             disable cuda cuvid nvenc
6093             ;;
6094     esac
6095 else
6096     disable cuda cuvid nvenc
6097 fi
6098
6099 enabled nvenc &&
6100     check_cc -I$source_path <<EOF || disable nvenc
6101 #include "compat/nvenc/nvEncodeAPI.h"
6102 NV_ENCODE_API_FUNCTION_LIST flist;
6103 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6104 int main(void) { return 0; }
6105 EOF
6106
6107 # Funny iconv installations are not unusual, so check it after all flags have been set
6108 disabled iconv || check_func_headers iconv.h iconv || check_lib2 iconv.h iconv -liconv || disable iconv
6109
6110 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6111
6112 # add some useful compiler flags if supported
6113 check_cflags -Wdeclaration-after-statement
6114 check_cflags -Wall
6115 check_cflags -Wdisabled-optimization
6116 check_cflags -Wpointer-arith
6117 check_cflags -Wredundant-decls
6118 check_cflags -Wwrite-strings
6119 check_cflags -Wtype-limits
6120 check_cflags -Wundef
6121 check_cflags -Wmissing-prototypes
6122 check_cflags -Wno-pointer-to-int-cast
6123 check_cflags -Wstrict-prototypes
6124 check_cflags -Wempty-body
6125 enabled extra_warnings && check_cflags -Winline
6126 enabled extra_warnings && check_cflags -Wcast-qual
6127
6128 check_disable_warning(){
6129     warning_flag=-W${1#-Wno-}
6130     test_cflags $warning_flag && add_cflags $1
6131 }
6132
6133 check_disable_warning -Wno-parentheses
6134 check_disable_warning -Wno-switch
6135 check_disable_warning -Wno-format-zero-length
6136 check_disable_warning -Wno-pointer-sign
6137 check_disable_warning -Wno-unused-const-variable
6138
6139 # add some linker flags
6140 check_ldflags -Wl,--warn-common
6141 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6142 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
6143 enabled rpath && add_ldlibflags -Wl,-rpath,$libdir
6144 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6145
6146 # add some strip flags
6147 # -wN '..@*' is more selective than -x, but not available everywhere.
6148 check_stripflags -wN \'..@*\' || check_stripflags -x
6149
6150 enabled neon_clobber_test &&
6151     check_ldflags -Wl,--wrap,avcodec_open2              \
6152                   -Wl,--wrap,avcodec_decode_audio4      \
6153                   -Wl,--wrap,avcodec_decode_video2      \
6154                   -Wl,--wrap,avcodec_decode_subtitle2   \
6155                   -Wl,--wrap,avcodec_encode_audio2      \
6156                   -Wl,--wrap,avcodec_encode_video2      \
6157                   -Wl,--wrap,avcodec_send_packet        \
6158                   -Wl,--wrap,avcodec_receive_frame      \
6159                   -Wl,--wrap,avcodec_send_frame         \
6160                   -Wl,--wrap,avcodec_receive_packet     \
6161                   -Wl,--wrap,avcodec_encode_subtitle    \
6162                   -Wl,--wrap,swr_convert                \
6163                   -Wl,--wrap,avresample_convert ||
6164     disable neon_clobber_test
6165
6166 enabled xmm_clobber_test &&
6167     check_ldflags -Wl,--wrap,avcodec_open2              \
6168                   -Wl,--wrap,avcodec_decode_audio4      \
6169                   -Wl,--wrap,avcodec_decode_video2      \
6170                   -Wl,--wrap,avcodec_decode_subtitle2   \
6171                   -Wl,--wrap,avcodec_encode_audio2      \
6172                   -Wl,--wrap,avcodec_encode_video2      \
6173                   -Wl,--wrap,avcodec_encode_subtitle    \
6174                   -Wl,--wrap,avcodec_send_packet        \
6175                   -Wl,--wrap,avcodec_receive_frame      \
6176                   -Wl,--wrap,avcodec_send_frame         \
6177                   -Wl,--wrap,avcodec_receive_packet     \
6178                   -Wl,--wrap,swr_convert                \
6179                   -Wl,--wrap,avresample_convert         \
6180                   -Wl,--wrap,sws_scale ||
6181     disable xmm_clobber_test
6182
6183 check_ld "cc" <<EOF && enable proper_dce
6184 extern const int array[512];
6185 static inline int func(void) { return array[0]; }
6186 int main(void) { return 0; }
6187 EOF
6188
6189 if enabled proper_dce; then
6190     echo "X { local: *; };" > $TMPV
6191     if test_ldflags -Wl,${version_script},$TMPV; then
6192         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6193         check_cc <<EOF && enable symver_asm_label
6194 void ff_foo(void) __asm__ ("av_foo@VERSION");
6195 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6196 EOF
6197         check_cc <<EOF && enable symver_gnu_asm
6198 __asm__(".symver ff_foo,av_foo@VERSION");
6199 void ff_foo(void) {}
6200 EOF
6201     fi
6202 fi
6203
6204 if [ -z "$optflags" ]; then
6205     if enabled small; then
6206         optflags=$cflags_size
6207     elif enabled optimizations; then
6208         optflags=$cflags_speed
6209     else
6210         optflags=$cflags_noopt
6211     fi
6212 fi
6213
6214 check_optflags(){
6215     check_cflags "$@"
6216     enabled lto && check_ldflags "$@"
6217 }
6218
6219
6220 if enabled lto; then
6221     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6222     check_cflags  -flto
6223     check_ldflags -flto $cpuflags
6224     disable inline_asm_direct_symbol_refs
6225 fi
6226
6227 check_optflags $optflags
6228 check_optflags -fno-math-errno
6229 check_optflags -fno-signed-zeros
6230
6231 enabled ftrapv && check_cflags -ftrapv
6232
6233 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6234 int x;
6235 EOF
6236
6237
6238 if enabled icc; then
6239     # Just warnings, no remarks
6240     check_cflags -w1
6241     # -wd: Disable following warnings
6242     # 144, 167, 556: -Wno-pointer-sign
6243     # 188: enumerated type mixed with another type
6244     # 1292: attribute "foo" ignored
6245     # 1419: external declaration in primary source file
6246     # 10006: ignoring unknown option -fno-signed-zeros
6247     # 10148: ignoring unknown option -Wno-parentheses
6248     # 10156: ignoring option '-W'; no argument required
6249     # 13200: No EMMS instruction before call to function
6250     # 13203: No EMMS instruction before return from function
6251     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6252     # 11030: Warning unknown option --as-needed
6253     # 10156: ignoring option '-export'; no argument required
6254     check_ldflags -wd10156,11030
6255     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6256     enable ebp_available
6257     # The test above does not test linking
6258     enabled lto && disable symver_asm_label
6259     if enabled x86_32; then
6260         icc_version=$($cc -dumpversion)
6261         test ${icc_version%%.*} -ge 11 &&
6262             check_cflags -falign-stack=maintain-16-byte ||
6263             disable aligned_stack
6264     fi
6265 elif enabled ccc; then
6266     # disable some annoying warnings
6267     add_cflags -msg_disable bitnotint
6268     add_cflags -msg_disable mixfuncvoid
6269     add_cflags -msg_disable nonstandcast
6270     add_cflags -msg_disable unsupieee
6271 elif enabled gcc; then
6272     check_optflags -fno-tree-vectorize
6273     check_cflags -Werror=format-security
6274     check_cflags -Werror=implicit-function-declaration
6275     check_cflags -Werror=missing-prototypes
6276     check_cflags -Werror=return-type
6277     check_cflags -Werror=vla
6278     check_cflags -Wformat
6279     check_cflags -fdiagnostics-color=auto
6280     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6281 elif enabled llvm_gcc; then
6282     check_cflags -mllvm -stack-alignment=16
6283 elif enabled clang; then
6284     check_cflags -mllvm -stack-alignment=16
6285     check_cflags -mstack-alignment=16
6286     check_cflags -Qunused-arguments
6287     check_cflags -Werror=implicit-function-declaration
6288     check_cflags -Werror=missing-prototypes
6289     check_cflags -Werror=return-type
6290 elif enabled cparser; then
6291     add_cflags -Wno-missing-variable-declarations
6292     add_cflags -Wno-empty-statement
6293 elif enabled armcc; then
6294     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6295     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6296     # 2523: use of inline assembly is deprecated
6297     add_cflags -W${armcc_opt},--diag_suppress=2523
6298     add_cflags -W${armcc_opt},--diag_suppress=1207
6299     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6300     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6301     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6302     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6303 elif enabled tms470; then
6304     add_cflags -pds=824 -pds=837
6305     disable inline_asm
6306 elif enabled pathscale; then
6307     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6308 elif enabled_any msvc icl; then
6309     enabled x86_32 && disable aligned_stack
6310     enabled_all x86_32 debug && add_cflags -Oy-
6311     enabled debug && add_ldflags -debug
6312     enable pragma_deprecated
6313     if enabled icl; then
6314         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6315         # (correctly) on icl 13.x.
6316         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6317             add_cflags -Qansi-alias
6318         # Some inline asm is not compilable in debug
6319         if enabled debug; then
6320             disable ebp_available
6321             disable ebx_available
6322         fi
6323     fi
6324     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6325     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
6326     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6327     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6328     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6329     # MSVC 2013 and newer can handle it fine.
6330     # If this declspec fails, force including stdlib.h before the restrict redefinition
6331     # happens in config.h.
6332     if [ $_restrict != restrict ]; then
6333         check_cc <<EOF || add_cflags -FIstdlib.h
6334 __declspec($_restrict) void* foo(int);
6335 EOF
6336     fi
6337     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6338     # Issue has been fixed in MSVC v19.00.24218.
6339     check_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6340         check_cflags -d2SSAOptimizer-
6341     # enable utf-8 source processing on VS2015 U2 and newer
6342     check_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6343         add_cflags -utf-8
6344 fi
6345
6346 for pfx in "" host_; do
6347     varname=${pfx%_}cc_type
6348     eval "type=\$$varname"
6349     if [ $type = "msvc" ]; then
6350         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6351 static inline int foo(int a) { return a; }
6352 EOF
6353     fi
6354 done
6355
6356 case $as_type in
6357     clang)
6358         add_asflags -Qunused-arguments
6359     ;;
6360 esac
6361
6362 case $ld_type in
6363     clang)
6364         check_ldflags -Qunused-arguments
6365     ;;
6366 esac
6367
6368 case $target_os in
6369     osf1)
6370         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
6371     ;;
6372     plan9)
6373         add_cppflags -Dmain=plan9_main
6374     ;;
6375 esac
6376
6377 enable frame_thread_encoder
6378
6379 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6380
6381 check_deps $CONFIG_LIST       \
6382            $CONFIG_EXTRA      \
6383            $HAVE_LIST         \
6384            $ALL_COMPONENTS    \
6385
6386 enabled threads && ! enabled pthreads && ! enabled atomics_native && die "non pthread threading without atomics not supported, try adding --enable-pthreads or --cpu=i486 or higher if you are on x86"
6387
6388
6389 if test $target_os = "haiku"; then
6390     disable memalign
6391     disable posix_memalign
6392 fi
6393
6394 enabled_all dxva2 dxva2api_cobj CoTaskMemFree &&
6395     prepend ffmpeg_libs $($ldflags_filter "-lole32") &&
6396     enable dxva2_lib
6397
6398 ! enabled_any memalign posix_memalign aligned_malloc &&
6399     enabled simd_align_16 && enable memalign_hack
6400
6401 # add_dep lib dep
6402 # -> enable ${lib}_deps_${dep}
6403 # -> add $dep to ${lib}_deps only once
6404 add_dep() {
6405     lib=$1
6406     dep=$2
6407     enabled "${lib}_deps_${dep}" && return 0
6408     enable  "${lib}_deps_${dep}"
6409     prepend "${lib}_deps" $dep
6410 }
6411
6412 # merge deps lib components
6413 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
6414 merge_deps() {
6415     lib=$1
6416     shift
6417     for comp in $*; do
6418         enabled $comp || continue
6419         eval "dep=\"\$${comp}_deps\""
6420         for d in $dep; do
6421             add_dep $lib $d
6422         done
6423     done
6424 }
6425
6426 merge_deps libavfilter $FILTER_LIST
6427
6428 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6429
6430 for thread in $THREADS_LIST; do
6431     if enabled $thread; then
6432         test -n "$thread_type" &&
6433             die "ERROR: Only one thread type must be selected." ||
6434             thread_type="$thread"
6435     fi
6436 done
6437
6438 if disabled stdatomic_h; then
6439     if enabled atomics_gcc; then
6440         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6441     elif enabled atomics_win32; then
6442         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6443     elif enabled atomics_suncc; then
6444         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6445     elif enabled pthreads; then
6446         add_compat atomics/pthread/stdatomic.o
6447         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6448     else
6449         enabled threads && die "Threading is enabled, but no atomics are available"
6450         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6451     fi
6452 fi
6453
6454 # Check if requested libraries were found.
6455 for lib in $AUTODETECT_LIBS; do
6456     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6457 done
6458
6459 enabled zlib && add_cppflags -DZLIB_CONST
6460
6461 # conditional library dependencies, in linking order
6462 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6463 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6464 enabled aresample_filter    && prepend avfilter_deps "swresample"
6465 enabled asyncts_filter      && prepend avfilter_deps "avresample"
6466 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6467 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6468 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6469 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6470 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6471 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6472 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6473 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6474 enabled pan_filter          && prepend avfilter_deps "swresample"
6475 enabled pp_filter           && prepend avfilter_deps "postproc"
6476 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6477 enabled resample_filter && prepend avfilter_deps "avresample"
6478 enabled sab_filter          && prepend avfilter_deps "swscale"
6479 enabled scale_filter    && prepend avfilter_deps "swscale"
6480 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6481 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6482 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6483 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6484 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6485 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6486 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6487 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6488 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6489
6490 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6491
6492 enabled opus_decoder    && prepend avcodec_deps "swresample"
6493
6494 expand_deps(){
6495     lib_deps=${1}_deps
6496     eval "deps=\$$lib_deps"
6497     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6498     unique $lib_deps
6499 }
6500
6501 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6502 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6503
6504 map 'expand_deps $v' $LIBRARY_LIST
6505
6506 echo "install prefix            $prefix"
6507 echo "source path               $source_path"
6508 echo "C compiler                $cc"
6509 echo "C library                 $libc_type"
6510 if test "$host_cc" != "$cc"; then
6511     echo "host C compiler           $host_cc"
6512     echo "host C library            $host_libc_type"
6513 fi
6514 echo "ARCH                      $arch ($cpu)"
6515 if test "$build_suffix" != ""; then
6516     echo "build suffix              $build_suffix"
6517 fi
6518 if test "$progs_suffix" != ""; then
6519     echo "progs suffix              $progs_suffix"
6520 fi
6521 if test "$extra_version" != ""; then
6522     echo "version string suffix     $extra_version"
6523 fi
6524 echo "big-endian                ${bigendian-no}"
6525 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6526 if enabled x86; then
6527     echo "${yasmexe}                      ${yasm-no}"
6528     echo "MMX enabled               ${mmx-no}"
6529     echo "MMXEXT enabled            ${mmxext-no}"
6530     echo "3DNow! enabled            ${amd3dnow-no}"
6531     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6532     echo "SSE enabled               ${sse-no}"
6533     echo "SSSE3 enabled             ${ssse3-no}"
6534     echo "AESNI enabled             ${aesni-no}"
6535     echo "AVX enabled               ${avx-no}"
6536     echo "XOP enabled               ${xop-no}"
6537     echo "FMA3 enabled              ${fma3-no}"
6538     echo "FMA4 enabled              ${fma4-no}"
6539     echo "i686 features enabled     ${i686-no}"
6540     echo "CMOV is fast              ${fast_cmov-no}"
6541     echo "EBX available             ${ebx_available-no}"
6542     echo "EBP available             ${ebp_available-no}"
6543 fi
6544 if enabled aarch64; then
6545     echo "NEON enabled              ${neon-no}"
6546     echo "VFP enabled               ${vfp-no}"
6547 fi
6548 if enabled arm; then
6549     echo "ARMv5TE enabled           ${armv5te-no}"
6550     echo "ARMv6 enabled             ${armv6-no}"
6551     echo "ARMv6T2 enabled           ${armv6t2-no}"
6552     echo "VFP enabled               ${vfp-no}"
6553     echo "NEON enabled              ${neon-no}"
6554     echo "THUMB enabled             ${thumb-no}"
6555 fi
6556 if enabled mips; then
6557     echo "MIPS FPU enabled          ${mipsfpu-no}"
6558     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6559     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6560     echo "MIPS MSA enabled          ${msa-no}"
6561     echo "LOONGSON MMI enabled      ${mmi-no}"
6562 fi
6563 if enabled ppc; then
6564     echo "AltiVec enabled           ${altivec-no}"
6565     echo "VSX enabled               ${vsx-no}"
6566     echo "POWER8 enabled            ${power8-no}"
6567     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6568     echo "dcbzl available           ${dcbzl-no}"
6569 fi
6570 echo "debug symbols             ${debug-no}"
6571 echo "strip symbols             ${stripping-no}"
6572 echo "optimize for size         ${small-no}"
6573 echo "optimizations             ${optimizations-no}"
6574 echo "static                    ${static-no}"
6575 echo "shared                    ${shared-no}"
6576 echo "postprocessing support    ${postproc-no}"
6577 echo "new filter support        ${avfilter-no}"
6578 echo "network support           ${network-no}"
6579 echo "threading support         ${thread_type-no}"
6580 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6581 echo "SDL2 support              ${sdl2-no}"
6582 echo "opencl enabled            ${opencl-no}"
6583 echo "JNI support               ${jni-no}"
6584 echo "texi2html enabled         ${texi2html-no}"
6585 echo "perl enabled              ${perl-no}"
6586 echo "pod2man enabled           ${pod2man-no}"
6587 echo "makeinfo enabled          ${makeinfo-no}"
6588 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6589 test -n "$random_seed" &&
6590     echo "random seed               ${random_seed}"
6591 echo
6592
6593 echo "Enabled programs:"
6594 print_enabled '' $PROGRAM_LIST | print_in_columns
6595 echo
6596
6597 echo "External libraries:"
6598 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_in_columns
6599 echo
6600
6601 echo "External libraries providing hardware acceleration:"
6602 print_enabled '' $HWACCEL_LIBRARY_LIST | print_in_columns
6603 echo
6604
6605 echo "Libraries:"
6606 print_enabled '' $LIBRARY_LIST | print_in_columns
6607 echo
6608
6609 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6610     echo "Enabled ${type}s:"
6611     eval list=\$$(toupper $type)_LIST
6612     print_enabled '_*' $list | print_in_columns
6613     echo
6614 done
6615
6616 license="LGPL version 2.1 or later"
6617 if enabled nonfree; then
6618     license="nonfree and unredistributable"
6619 elif enabled gplv3; then
6620     license="GPL version 3 or later"
6621 elif enabled lgplv3; then
6622     license="LGPL version 3 or later"
6623 elif enabled gpl; then
6624     license="GPL version 2 or later"
6625 fi
6626
6627 echo "License: $license"
6628
6629 echo "Creating config.mak, config.h, and doc/config.texi..."
6630
6631 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6632
6633 enabled stripping || strip="echo skipping strip"
6634
6635 config_files="$TMPH config.mak doc/config.texi"
6636
6637 cat > config.mak <<EOF
6638 # Automatically generated by configure - do not modify!
6639 ifndef FFMPEG_CONFIG_MAK
6640 FFMPEG_CONFIG_MAK=1
6641 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6642 prefix=$prefix
6643 LIBDIR=\$(DESTDIR)$libdir
6644 SHLIBDIR=\$(DESTDIR)$shlibdir
6645 INCDIR=\$(DESTDIR)$incdir
6646 BINDIR=\$(DESTDIR)$bindir
6647 DATADIR=\$(DESTDIR)$datadir
6648 DOCDIR=\$(DESTDIR)$docdir
6649 MANDIR=\$(DESTDIR)$mandir
6650 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6651 INSTALL_NAME_DIR=$install_name_dir
6652 SRC_PATH=$source_path
6653 SRC_LINK=$source_link
6654 ifndef MAIN_MAKEFILE
6655 SRC_PATH:=\$(SRC_PATH:.%=..%)
6656 endif
6657 CC_IDENT=$cc_ident
6658 ARCH=$arch
6659 INTRINSICS=$intrinsics
6660 CC=$cc
6661 CXX=$cxx
6662 AS=$as
6663 OBJCC=$objcc
6664 LD=$ld
6665 DEPCC=$dep_cc
6666 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6667 DEPAS=$as
6668 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6669 YASM=$yasmexe
6670 DEPYASM=$yasmexe
6671 AR=$ar
6672 ARFLAGS=$arflags
6673 AR_O=$ar_o
6674 RANLIB=$ranlib
6675 STRIP=$strip
6676 CP=cp -p
6677 LN_S=$ln_s
6678 CPPFLAGS=$CPPFLAGS
6679 CFLAGS=$CFLAGS
6680 CXXFLAGS=$CXXFLAGS
6681 OBJCFLAGS=$OBJCFLAGS
6682 ASFLAGS=$ASFLAGS
6683 AS_C=$AS_C
6684 AS_O=$AS_O
6685 OBJCC_C=$OBJCC_C
6686 OBJCC_E=$OBJCC_E
6687 OBJCC_O=$OBJCC_O
6688 CC_C=$CC_C
6689 CC_E=$CC_E
6690 CC_O=$CC_O
6691 CXX_C=$CXX_C
6692 CXX_O=$CXX_O
6693 LD_O=$LD_O
6694 LD_LIB=$LD_LIB
6695 LD_PATH=$LD_PATH
6696 DLLTOOL=$dlltool
6697 WINDRES=$windres
6698 DEPWINDRES=$dep_cc
6699 DOXYGEN=$doxygen
6700 LDFLAGS=$LDFLAGS
6701 LDEXEFLAGS=$LDEXEFLAGS
6702 LDLIBFLAGS=$LDLIBFLAGS
6703 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
6704 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
6705 YASMFLAGS=$YASMFLAGS
6706 BUILDSUF=$build_suffix
6707 PROGSSUF=$progs_suffix
6708 FULLNAME=$FULLNAME
6709 LIBPREF=$LIBPREF
6710 LIBSUF=$LIBSUF
6711 LIBNAME=$LIBNAME
6712 SLIBPREF=$SLIBPREF
6713 SLIBSUF=$SLIBSUF
6714 EXESUF=$EXESUF
6715 EXTRA_VERSION=$extra_version
6716 CCDEP=$CCDEP
6717 CXXDEP=$CXXDEP
6718 CCDEP_FLAGS=$CCDEP_FLAGS
6719 ASDEP=$ASDEP
6720 ASDEP_FLAGS=$ASDEP_FLAGS
6721 CC_DEPFLAGS=$CC_DEPFLAGS
6722 AS_DEPFLAGS=$AS_DEPFLAGS
6723 HOSTCC=$host_cc
6724 HOSTLD=$host_ld
6725 HOSTCFLAGS=$host_cflags
6726 HOSTCPPFLAGS=$host_cppflags
6727 HOSTEXESUF=$HOSTEXESUF
6728 HOSTLDFLAGS=$host_ldflags
6729 HOSTLIBS=$host_libs
6730 DEPHOSTCC=$host_cc
6731 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
6732 HOSTCCDEP=$HOSTCCDEP
6733 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
6734 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
6735 HOSTCC_C=$HOSTCC_C
6736 HOSTCC_O=$HOSTCC_O
6737 HOSTLD_O=$HOSTLD_O
6738 TARGET_EXEC=$target_exec $target_exec_args
6739 TARGET_PATH=$target_path
6740 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
6741 CFLAGS-ffplay=${sdl2_cflags}
6742 ZLIB=$($ldflags_filter -lz)
6743 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
6744 EXTRALIBS=$extralibs
6745 COMPAT_OBJS=$compat_objs
6746 EXEOBJS=$exeobjs
6747 INSTALL=$install
6748 LIBTARGET=${LIBTARGET}
6749 SLIBNAME=${SLIBNAME}
6750 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
6751 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
6752 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
6753 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
6754 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
6755 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
6756 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
6757 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
6758 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
6759 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
6760 NOREDZONE_FLAGS=$noredzone_flags
6761 EOF
6762
6763 get_version(){
6764     lcname=lib${1}
6765     name=$(toupper $lcname)
6766     file=$source_path/$lcname/version.h
6767     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
6768     enabled raise_major && eval ${name}_VERSION_MAJOR=$((${name}_VERSION_MAJOR+100))
6769     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
6770     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
6771     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
6772     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
6773 }
6774
6775 map 'get_version $v' $LIBRARY_LIST
6776
6777 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> config.mak' $LIBRARY_LIST
6778
6779 print_program_libs(){
6780     eval "program_libs=\$${1}_libs"
6781     eval echo "LIBS-${1}=${program_libs}" >> config.mak
6782 }
6783
6784 map 'print_program_libs $v' $PROGRAM_LIST
6785
6786 cat > $TMPH <<EOF
6787 /* Automatically generated by configure - do not modify! */
6788 #ifndef FFMPEG_CONFIG_H
6789 #define FFMPEG_CONFIG_H
6790 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
6791 #define FFMPEG_LICENSE "$(c_escape $license)"
6792 #define CONFIG_THIS_YEAR 2017
6793 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
6794 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
6795 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
6796 #define av_restrict $_restrict
6797 #define EXTERN_PREFIX "${extern_prefix}"
6798 #define EXTERN_ASM ${extern_prefix}
6799 #define BUILDSUF "$build_suffix"
6800 #define SLIBSUF "$SLIBSUF"
6801 #define HAVE_MMX2 HAVE_MMXEXT
6802 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
6803 EOF
6804
6805 test -n "$assert_level" &&
6806     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
6807
6808 test -n "$malloc_prefix" &&
6809     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
6810
6811 if enabled yasm; then
6812     append config_files $TMPASM
6813     printf '' >$TMPASM
6814 fi
6815
6816 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
6817
6818
6819 mkdir -p doc
6820 mkdir -p tests
6821 mkdir -p tests/api
6822 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
6823
6824 print_config ARCH_   "$config_files" $ARCH_LIST
6825 print_config HAVE_   "$config_files" $HAVE_LIST
6826 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
6827                                      $CONFIG_EXTRA      \
6828                                      $ALL_COMPONENTS    \
6829
6830 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
6831 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
6832
6833 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
6834 cp_if_changed $TMPH config.h
6835 touch .config
6836
6837 enabled yasm && cp_if_changed $TMPASM config.asm
6838
6839 cat > $TMPH <<EOF
6840 /* Generated by ffconf */
6841 #ifndef AVUTIL_AVCONFIG_H
6842 #define AVUTIL_AVCONFIG_H
6843 EOF
6844
6845 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
6846
6847 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
6848
6849 cp_if_changed $TMPH libavutil/avconfig.h
6850
6851 if test -n "$WARNINGS"; then
6852     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
6853     enabled fatal_warnings && exit 1
6854 fi
6855
6856 # generate the lists of enabled components
6857 print_enabled_components(){
6858     file=$1
6859     struct_name=$2
6860     name=$3
6861     shift 3
6862     echo "static const $struct_name *$name[] = {" > $TMPH
6863     for c in $*; do
6864         enabled $c && printf "    &ff_%s,\n" $c >> $TMPH
6865     done
6866     echo "    NULL };" >> $TMPH
6867     cp_if_changed $TMPH $file
6868 }
6869
6870 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
6871 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
6872
6873 # build pkg-config files
6874
6875 lib_version(){
6876     eval printf "\"lib${1}${build_suffix} >= \$LIB$(toupper ${1})_VERSION, \""
6877 }
6878
6879 pkgconfig_generate(){
6880     name=$1
6881     shortname=${name#lib}${build_suffix}
6882     comment=$2
6883     version=$3
6884     libs=$4
6885     requires=$(map 'lib_version $v' $(eval echo \$${name#lib}_deps))
6886     requires=${requires%, }
6887     enabled ${name#lib} || return 0
6888     mkdir -p $name
6889     cat <<EOF > $name/$name${build_suffix}.pc
6890 prefix=$prefix
6891 exec_prefix=\${prefix}
6892 libdir=$libdir
6893 includedir=$incdir
6894
6895 Name: $name
6896 Description: $comment
6897 Version: $version
6898 Requires: $(enabled shared || echo $requires)
6899 Requires.private: $(enabled shared && echo $requires)
6900 Conflicts:
6901 Libs: -L\${libdir} $(enabled rpath && echo "-Wl,-rpath,\${libdir}") -l${shortname} $(enabled shared || echo $libs)
6902 Libs.private: $(enabled shared && echo $libs)
6903 Cflags: -I\${includedir}
6904 EOF
6905
6906 mkdir -p doc/examples/pc-uninstalled
6907 includedir=${source_path}
6908 [ "$includedir" = . ] && includedir="\${pcfiledir}/../../.."
6909     cat <<EOF > doc/examples/pc-uninstalled/${name}-uninstalled.pc
6910 prefix=
6911 exec_prefix=
6912 libdir=\${pcfiledir}/../../../$name
6913 includedir=${includedir}
6914
6915 Name: $name
6916 Description: $comment
6917 Version: $version
6918 Requires: $requires
6919 Conflicts:
6920 Libs: -L\${libdir} -Wl,-rpath,\${libdir} -l${shortname} $(enabled shared || echo $libs)
6921 Cflags: -I\${includedir}
6922 EOF
6923 }
6924
6925 pkgconfig_generate libavutil     "FFmpeg utility library"               "$LIBAVUTIL_VERSION"     "$LIBRT $LIBM"
6926 pkgconfig_generate libavcodec    "FFmpeg codec library"                 "$LIBAVCODEC_VERSION"    "$extralibs"
6927 pkgconfig_generate libavformat   "FFmpeg container format library"      "$LIBAVFORMAT_VERSION"   "$extralibs"
6928 pkgconfig_generate libavdevice   "FFmpeg device handling library"       "$LIBAVDEVICE_VERSION"   "$extralibs"
6929 pkgconfig_generate libavfilter   "FFmpeg audio/video filtering library" "$LIBAVFILTER_VERSION"   "$extralibs"
6930 pkgconfig_generate libpostproc   "FFmpeg postprocessing library"        "$LIBPOSTPROC_VERSION"   ""
6931 pkgconfig_generate libavresample "Libav audio resampling library"       "$LIBAVRESAMPLE_VERSION" "$LIBM"
6932 pkgconfig_generate libswscale    "FFmpeg image rescaling library"       "$LIBSWSCALE_VERSION"    "$LIBM"
6933 pkgconfig_generate libswresample "FFmpeg audio resampling library"      "$LIBSWRESAMPLE_VERSION" "$LIBM $LIBSOXR"