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 enable(){
 601     set_all yes $*
 602 }
 603
 604 disable(){
 605     set_all no $*
 606 }
 607
 608 enable_weak(){
 609     set_weak yes $*
 610 }
 611
 612 disable_weak(){
 613     set_weak no $*
 614 }
 615
 616 enable_safe(){
 617     for var; do
 618         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 619     done
 620 }
 621
 622 disable_safe(){
 623     for var; do
 624         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 625     done
 626 }
 627
 628 do_enable_deep(){
 629     for var; do
 630         enabled $var && continue
 631         eval sel="\$${var}_select"
 632         eval sgs="\$${var}_suggest"
 633         pushvar var sgs
 634         enable_deep $sel
 635         popvar sgs
 636         enable_deep_weak $sgs
 637         popvar var
 638     done
 639 }
 640
 641 enable_deep(){
 642     do_enable_deep $*
 643     enable $*
 644 }
 645
 646 enable_deep_weak(){
 647     for var; do
 648         disabled $var && continue
 649         pushvar var
 650         do_enable_deep $var
 651         popvar var
 652         enable_weak $var
 653     done
 654 }
 655
 656 enabled(){
 657     test "${1#!}" = "$1" && op='=' || op=!=
 658     eval test "x\$${1#!}" $op "xyes"
 659 }
 660
 661 disabled(){
 662     test "${1#!}" = "$1" && op='=' || op=!=
 663     eval test "x\$${1#!}" $op "xno"
 664 }
 665
 666 enabled_all(){
 667     for opt; do
 668         enabled $opt || return 1
 669     done
 670 }
 671
 672 disabled_all(){
 673     for opt; do
 674         disabled $opt || return 1
 675     done
 676 }
 677
 678 enabled_any(){
 679     for opt; do
 680         enabled $opt && return 0
 681     done
 682 }
 683
 684 disabled_any(){
 685     for opt; do
 686         disabled $opt && return 0
 687     done
 688     return 1
 689 }
 690
 691 set_default(){
 692     for opt; do
 693         eval : \${$opt:=\$${opt}_default}
 694     done
 695 }
 696
 697 is_in(){
 698     value=$1
 699     shift
 700     for var in $*; do
 701         [ $var = $value ] && return 0
 702     done
 703     return 1
 704 }
 705
 706 do_check_deps(){
 707     for cfg; do
 708         cfg="${cfg#!}"
 709         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 710         disabled ${cfg}_checking && continue
 711         enable ${cfg}_checking
 712         append allopts $cfg
 713
 714         eval dep_all="\$${cfg}_deps"
 715         eval dep_any="\$${cfg}_deps_any"
 716         eval dep_sel="\$${cfg}_select"
 717         eval dep_sgs="\$${cfg}_suggest"
 718         eval dep_ifa="\$${cfg}_if"
 719         eval dep_ifn="\$${cfg}_if_any"
 720
 721         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 722         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
 723         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 724
 725         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 726         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 727         enabled_all  $dep_all || disable $cfg
 728         enabled_any  $dep_any || disable $cfg
 729         disabled_any $dep_sel && disable $cfg
 730
 731         if enabled $cfg; then
 732             enable_deep $dep_sel
 733             enable_deep_weak $dep_sgs
 734         fi
 735
 736         disable ${cfg}_checking
 737     done
 738 }
 739
 740 check_deps(){
 741     unset allopts
 742
 743     do_check_deps "$@"
 744
 745     for cfg in $allopts; do
 746         enabled $cfg || continue
 747         eval dep_extralibs="\$${cfg}_extralibs"
 748         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
 749     done
 750 }
 751
 752 print_config(){
 753     pfx=$1
 754     files=$2
 755     shift 2
 756     map 'eval echo "$v \${$v:-no}"' "$@" |
 757     awk "BEGIN { split(\"$files\", files) }
 758         {
 759             c = \"$pfx\" toupper(\$1);
 760             v = \$2;
 761             sub(/yes/, 1, v);
 762             sub(/no/,  0, v);
 763             for (f in files) {
 764                 file = files[f];
 765                 if (file ~ /\\.h\$/) {
 766                     printf(\"#define %s %d\\n\", c, v) >>file;
 767                 } else if (file ~ /\\.asm\$/) {
 768                     printf(\"%%define %s %d\\n\", c, v) >>file;
 769                 } else if (file ~ /\\.mak\$/) {
 770                     n = -v ? \"\" : \"!\";
 771                     printf(\"%s%s=yes\\n\", n, c) >>file;
 772                 } else if (file ~ /\\.texi\$/) {
 773                     pre = -v ? \"\" : \"@c \";
 774                     yesno = \$2;
 775                     c2 = tolower(c);
 776                     gsub(/_/, \"-\", c2);
 777                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 778                 }
 779             }
 780         }"
 781 }
 782
 783 print_enabled(){
 784     suf=$1
 785     shift
 786     for v; do
 787         enabled $v && printf "%s\n" ${v%$suf}
 788     done
 789 }
 790
 791 append(){
 792     var=$1
 793     shift
 794     eval "$var=\"\$$var $*\""
 795 }
 796
 797 prepend(){
 798     var=$1
 799     shift
 800     eval "$var=\"$* \$$var\""
 801 }
 802
 803 unique(){
 804     var=$1
 805     uniq_list=""
 806     for tok in $(eval echo \$$var); do
 807         uniq_list="$(filter_out $tok $uniq_list) $tok"
 808     done
 809     eval "$var=\"${uniq_list}\""
 810 }
 811
 812 add_cppflags(){
 813     append CPPFLAGS "$@"
 814 }
 815
 816 add_cflags(){
 817     append CFLAGS $($cflags_filter "$@")
 818 }
 819
 820 add_cxxflags(){
 821     append CXXFLAGS $($cflags_filter "$@")
 822 }
 823
 824 add_asflags(){
 825     append ASFLAGS $($asflags_filter "$@")
 826 }
 827
 828 add_objcflags(){
 829     append OBJCFLAGS $($objcflags_filter "$@")
 830 }
 831
 832 add_ldflags(){
 833     append LDFLAGS $($ldflags_filter "$@")
 834 }
 835
 836 add_ldexeflags(){
 837     append LDEXEFLAGS $($ldflags_filter "$@")
 838 }
 839
 840 add_ldlibflags(){
 841     append LDLIBFLAGS $($ldflags_filter "$@")
 842 }
 843
 844 add_stripflags(){
 845     append ASMSTRIPFLAGS "$@"
 846 }
 847
 848 add_extralibs(){
 849     prepend extralibs $($ldflags_filter "$@")
 850 }
 851
 852 add_host_cppflags(){
 853     append host_cppflags "$@"
 854 }
 855
 856 add_host_cflags(){
 857     append host_cflags $($host_cflags_filter "$@")
 858 }
 859
 860 add_host_ldflags(){
 861     append host_ldflags $($host_ldflags_filter "$@")
 862 }
 863
 864 add_compat(){
 865     append compat_objs $1
 866     shift
 867     map 'add_cppflags -D$v' "$@"
 868 }
 869
 870 check_cmd(){
 871     log "$@"
 872     "$@" >> $logfile 2>&1
 873 }
 874
 875 check_stat(){
 876     log check_stat "$@"
 877     stat "$1" >> $logfile 2>&1
 878 }
 879
 880 cc_o(){
 881     eval printf '%s\\n' $CC_O
 882 }
 883
 884 cc_e(){
 885     eval printf '%s\\n' $CC_E
 886 }
 887
 888 check_cc(){
 889     log check_cc "$@"
 890     cat > $TMPC
 891     log_file $TMPC
 892     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 893 }
 894
 895 check_cxx(){
 896     log check_cxx "$@"
 897     cat > $TMPCPP
 898     log_file $TMPCPP
 899     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 900 }
 901
 902 check_objcc(){
 903     log check_objcc "$@"
 904     cat > $TMPM
 905     log_file $TMPM
 906     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
 907 }
 908
 909 check_cpp(){
 910     log check_cpp "$@"
 911     cat > $TMPC
 912     log_file $TMPC
 913     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 914 }
 915
 916 as_o(){
 917     eval printf '%s\\n' $AS_O
 918 }
 919
 920 check_as(){
 921     log check_as "$@"
 922     cat > $TMPS
 923     log_file $TMPS
 924     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 925 }
 926
 927 check_inline_asm(){
 928     log check_inline_asm "$@"
 929     name="$1"
 930     code="$2"
 931     shift 2
 932     disable $name
 933     check_cc "$@" <<EOF && enable $name
 934 void foo(void){ __asm__ volatile($code); }
 935 EOF
 936 }
 937
 938 check_inline_asm_flags(){
 939     log check_inline_asm_flags "$@"
 940     name="$1"
 941     code="$2"
 942     flags=''
 943     shift 2
 944     while [ "$1" != "" ]; do
 945       append flags $1
 946       shift
 947     done;
 948     disable $name
 949     cat > $TMPC <<EOF
 950 void foo(void){ __asm__ volatile($code); }
 951 EOF
 952     log_file $TMPC
 953     check_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
 954     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
 955 }
 956
 957 check_insn(){
 958     log check_insn "$@"
 959     check_inline_asm ${1}_inline "\"$2\""
 960     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 961 }
 962
 963 check_yasm(){
 964     log check_yasm "$@"
 965     echo "$1" > $TMPS
 966     log_file $TMPS
 967     shift 1
 968     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
 969 }
 970
 971 ld_o(){
 972     eval printf '%s\\n' $LD_O
 973 }
 974
 975 check_ld(){
 976     log check_ld "$@"
 977     type=$1
 978     shift 1
 979     flags=$(filter_out '-l*|*.so' $@)
 980     libs=$(filter '-l*|*.so' $@)
 981     check_$type $($cflags_filter $flags) || return
 982     flags=$($ldflags_filter $flags)
 983     libs=$($ldflags_filter $libs)
 984     check_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
 985 }
 986
 987 print_include(){
 988     hdr=$1
 989     test "${hdr%.h}" = "${hdr}" &&
 990         echo "#include $hdr"    ||
 991         echo "#include <$hdr>"
 992 }
 993
 994 check_code(){
 995     log check_code "$@"
 996     check=$1
 997     headers=$2
 998     code=$3
 999     shift 3
1000     {
1001         for hdr in $headers; do
1002             print_include $hdr
1003         done
1004         echo "int main(void) { $code; return 0; }"
1005     } | check_$check "$@"
1006 }
1007
1008 check_cppflags(){
1009     log check_cppflags "$@"
1010     check_cc "$@" <<EOF && append CPPFLAGS "$@"
1011 int x;
1012 EOF
1013 }
1014
1015 test_cflags(){
1016     log test_cflags "$@"
1017     set -- $($cflags_filter "$@")
1018     check_cc "$@" <<EOF
1019 int x;
1020 EOF
1021 }
1022
1023 check_cflags(){
1024     log check_cflags "$@"
1025     test_cflags "$@" && add_cflags "$@"
1026 }
1027
1028 check_cxxflags(){
1029     log check_cxxflags "$@"
1030     set -- $($cflags_filter "$@")
1031     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
1032 int x;
1033 EOF
1034 }
1035
1036 test_objcflags(){
1037     log test_cflags "$@"
1038     set -- $($cflags_filter "$@")
1039     check_objcc "$@" <<EOF
1040 int x;
1041 EOF
1042 }
1043
1044 check_objcflags(){
1045     log check_cflags "$@"
1046     test_objcflags "$@" && add_objcflags "$@"
1047 }
1048
1049 test_ldflags(){
1050     log test_ldflags "$@"
1051     check_ld "cc" "$@" <<EOF
1052 int main(void){ return 0; }
1053 EOF
1054 }
1055
1056 check_ldflags(){
1057     log check_ldflags "$@"
1058     test_ldflags "$@" && add_ldflags "$@"
1059 }
1060
1061 test_stripflags(){
1062     log test_stripflags "$@"
1063     # call check_cc to get a fresh TMPO
1064     check_cc <<EOF
1065 int main(void) { return 0; }
1066 EOF
1067     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1068 }
1069
1070 check_stripflags(){
1071     log check_stripflags "$@"
1072     test_stripflags "$@" && add_stripflags "$@"
1073 }
1074
1075 check_header(){
1076     log check_header "$@"
1077     header=$1
1078     shift
1079     disable_safe $header
1080     check_cpp "$@" <<EOF && enable_safe $header
1081 #include <$header>
1082 int x;
1083 EOF
1084 }
1085
1086 check_header_objcc(){
1087     log check_header_objcc "$@"
1088     rm -f -- "$TMPO"
1089     header=$1
1090     shift
1091     disable_safe $header
1092     {
1093        echo "#include <$header>"
1094        echo "int main(void) { return 0; }"
1095     } | check_objcc && check_stat "$TMPO" && enable_safe $headers
1096 }
1097
1098 check_func(){
1099     log check_func "$@"
1100     func=$1
1101     shift
1102     disable $func
1103     check_ld "cc" "$@" <<EOF && enable $func
1104 extern int $func();
1105 int main(void){ $func(); }
1106 EOF
1107 }
1108
1109 check_complexfunc(){
1110     log check_complexfunc "$@"
1111     func=$1
1112     narg=$2
1113     shift 2
1114     test $narg = 2 && args="f, g" || args="f * I"
1115     disable $func
1116     check_ld "cc" "$@" <<EOF && enable $func
1117 #include <complex.h>
1118 #include <math.h>
1119 float foo(complex float f, complex float g) { return $func($args); }
1120 int main(void){ return (int) foo; }
1121 EOF
1122 }
1123
1124 check_mathfunc(){
1125     log check_mathfunc "$@"
1126     func=$1
1127     narg=$2
1128     shift 2
1129     test $narg = 2 && args="f, g" || args="f"
1130     disable $func
1131     check_ld "cc" "$@" <<EOF && enable $func
1132 #include <math.h>
1133 float foo(float f, float g) { return $func($args); }
1134 int main(void){ return (int) foo; }
1135 EOF
1136 }
1137
1138 check_func_headers(){
1139     log check_func_headers "$@"
1140     headers=$1
1141     funcs=$2
1142     shift 2
1143     {
1144         for hdr in $headers; do
1145             print_include $hdr
1146         done
1147         echo "#include <stdint.h>"
1148         for func in $funcs; do
1149             echo "long check_$func(void) { return (long) $func; }"
1150         done
1151         echo "int main(void) { int ret = 0;"
1152         # LTO could optimize out the test functions without this
1153         for func in $funcs; do
1154             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1155         done
1156         echo "return ret; }"
1157     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1158 }
1159
1160 check_class_headers_cpp(){
1161     log check_class_headers_cpp "$@"
1162     headers=$1
1163     classes=$2
1164     shift 2
1165     {
1166         for hdr in $headers; do
1167             echo "#include <$hdr>"
1168         done
1169         echo "int main(void) { "
1170         i=1
1171         for class in $classes; do
1172             echo "$class obj$i;"
1173             i=$(expr $i + 1)
1174         done
1175         echo "return 0; }"
1176     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1177 }
1178
1179 check_cpp_condition(){
1180     log check_cpp_condition "$@"
1181     header=$1
1182     condition=$2
1183     shift 2
1184     check_cpp "$@" <<EOF
1185 #include <$header>
1186 #if !($condition)
1187 #error "unsatisfied condition: $condition"
1188 #endif
1189 EOF
1190 }
1191
1192 check_lib(){
1193     log check_lib "$@"
1194     header="$1"
1195     func="$2"
1196     shift 2
1197     check_header $header && check_func $func "$@" && add_extralibs "$@"
1198 }
1199
1200 check_lib2(){
1201     log check_lib2 "$@"
1202     headers="$1"
1203     funcs="$2"
1204     shift 2
1205     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1206 }
1207
1208 check_lib_cpp(){
1209     log check_lib_cpp "$@"
1210     headers="$1"
1211     classes="$2"
1212     shift 2
1213     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1214 }
1215
1216 check_pkg_config(){
1217     log check_pkg_config "$@"
1218     pkgandversion="$1"
1219     pkg="${1%% *}"
1220     headers="$2"
1221     funcs="$3"
1222     shift 3
1223     check_cmd $pkg_config --exists --print-errors $pkgandversion || return
1224     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1225     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1226     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1227         set_safe "${pkg}_cflags" $pkg_cflags   &&
1228         set_safe "${pkg}_libs"   $pkg_libs
1229 }
1230
1231 check_exec(){
1232     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1233 }
1234
1235 check_exec_crash(){
1236     code=$(cat)
1237
1238     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1239     # are safe but may not be available everywhere.  Thus we use
1240     # raise(SIGTERM) instead.  The check is run in a subshell so we
1241     # can redirect the "Terminated" message from the shell.  SIGBUS
1242     # is not defined by standard C so it is used conditionally.
1243
1244     (check_exec "$@") >> $logfile 2>&1 <<EOF
1245 #include <signal.h>
1246 static void sighandler(int sig){
1247     raise(SIGTERM);
1248 }
1249 int foo(void){
1250     $code
1251 }
1252 int (*func_ptr)(void) = foo;
1253 int main(void){
1254     signal(SIGILL, sighandler);
1255     signal(SIGFPE, sighandler);
1256     signal(SIGSEGV, sighandler);
1257 #ifdef SIGBUS
1258     signal(SIGBUS, sighandler);
1259 #endif
1260     return func_ptr();
1261 }
1262 EOF
1263 }
1264
1265 check_type(){
1266     log check_type "$@"
1267     headers=$1
1268     type=$2
1269     shift 2
1270     disable_safe "$type"
1271     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1272 }
1273
1274 check_struct(){
1275     log check_struct "$@"
1276     headers=$1
1277     struct=$2
1278     member=$3
1279     shift 3
1280     disable_safe "${struct}_${member}"
1281     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1282         enable_safe "${struct}_${member}"
1283 }
1284
1285 check_builtin(){
1286     log check_builtin "$@"
1287     name=$1
1288     headers=$2
1289     builtin=$3
1290     shift 3
1291     disable "$name"
1292     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1293 }
1294
1295 check_compile_assert(){
1296     log check_compile_assert "$@"
1297     name=$1
1298     headers=$2
1299     condition=$3
1300     shift 3
1301     disable "$name"
1302     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1303 }
1304
1305 require(){
1306     name="$1"
1307     header="$2"
1308     func="$3"
1309     shift 3
1310     check_lib $header $func "$@" || die "ERROR: $name not found"
1311 }
1312
1313 require2(){
1314     name="$1"
1315     headers="$2"
1316     func="$3"
1317     shift 3
1318     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1319 }
1320
1321 require_cpp(){
1322     name="$1"
1323     headers="$2"
1324     classes="$3"
1325     shift 3
1326     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1327 }
1328
1329 use_pkg_config(){
1330     pkg="$1"
1331     check_pkg_config "$@" || return 1
1332     add_cflags    $(get_safe "${pkg}_cflags")
1333     add_extralibs $(get_safe "${pkg}_libs")
1334 }
1335
1336 require_pkg_config(){
1337     use_pkg_config "$@" || die "ERROR: $pkg not found using pkg-config$pkg_config_fail_message"
1338 }
1339
1340 require_libfreetype(){
1341     log require_libfreetype "$@"
1342     pkg="freetype2"
1343     check_cmd $pkg_config --exists --print-errors $pkg \
1344       || die "ERROR: $pkg not found"
1345     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1346     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1347     {
1348         echo "#include <ft2build.h>"
1349         echo "#include FT_FREETYPE_H"
1350         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1351         echo "int main(void) { return 0; }"
1352     } | check_ld "cc" $pkg_cflags $pkg_libs \
1353       && set_safe "${pkg}_cflags" $pkg_cflags \
1354       && set_safe "${pkg}_libs"   $pkg_libs \
1355       || die "ERROR: $pkg not found"
1356     add_cflags    $(get_safe "${pkg}_cflags")
1357     add_extralibs $(get_safe "${pkg}_libs")
1358 }
1359
1360 hostcc_e(){
1361     eval printf '%s\\n' $HOSTCC_E
1362 }
1363
1364 hostcc_o(){
1365     eval printf '%s\\n' $HOSTCC_O
1366 }
1367
1368 check_host_cc(){
1369     log check_host_cc "$@"
1370     cat > $TMPC
1371     log_file $TMPC
1372     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1373 }
1374
1375 check_host_cpp(){
1376     log check_host_cpp "$@"
1377     cat > $TMPC
1378     log_file $TMPC
1379     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1380 }
1381
1382 check_host_cppflags(){
1383     log check_host_cppflags "$@"
1384     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1385 int x;
1386 EOF
1387 }
1388
1389 check_host_cflags(){
1390     log check_host_cflags "$@"
1391     set -- $($host_cflags_filter "$@")
1392     check_host_cc "$@" <<EOF && append host_cflags "$@"
1393 int x;
1394 EOF
1395 }
1396
1397 check_host_cpp_condition(){
1398     log check_host_cpp_condition "$@"
1399     header=$1
1400     condition=$2
1401     shift 2
1402     check_host_cpp "$@" <<EOF
1403 #include <$header>
1404 #if !($condition)
1405 #error "unsatisfied condition: $condition"
1406 #endif
1407 EOF
1408 }
1409
1410 cp_if_changed(){
1411     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1412     mkdir -p "$(dirname $2)"
1413     $cp_f "$1" "$2"
1414 }
1415
1416 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1417 # system-dependent things.
1418
1419 AVCODEC_COMPONENTS="
1420     bsfs
1421     decoders
1422     encoders
1423     hwaccels
1424     parsers
1425 "
1426
1427 AVDEVICE_COMPONENTS="
1428     indevs
1429     outdevs
1430 "
1431 AVFILTER_COMPONENTS="
1432     filters
1433 "
1434 AVFORMAT_COMPONENTS="
1435     demuxers
1436     muxers
1437     protocols
1438 "
1439
1440 AVRESAMPLE_COMPONENTS=""
1441 AVUTIL_COMPONENTS=""
1442
1443 COMPONENT_LIST="
1444     $AVCODEC_COMPONENTS
1445     $AVDEVICE_COMPONENTS
1446     $AVFILTER_COMPONENTS
1447     $AVFORMAT_COMPONENTS
1448     $AVRESAMPLE_COMPONENTS
1449     $AVUTIL_COMPONENTS
1450 "
1451
1452 EXAMPLE_LIST="
1453     avio_dir_cmd_example
1454     avio_reading_example
1455     decoding_encoding_example
1456     demuxing_decoding_example
1457     extract_mvs_example
1458     filter_audio_example
1459     filtering_audio_example
1460     filtering_video_example
1461     http_multiclient_example
1462     metadata_example
1463     muxing_example
1464     qsvdec_example
1465     remuxing_example
1466     resampling_audio_example
1467     scaling_video_example
1468     transcode_aac_example
1469     transcoding_example
1470 "
1471
1472 EXTERNAL_LIBRARY_LIST="
1473     avisynth
1474     bzlib
1475     chromaprint
1476     crystalhd
1477     decklink
1478     frei0r
1479     gcrypt
1480     gmp
1481     gnutls
1482     iconv
1483     jni
1484     ladspa
1485     libass
1486     libbluray
1487     libbs2b
1488     libcaca
1489     libcdio
1490     libcelt
1491     libdc1394
1492     libfdk_aac
1493     libflite
1494     libfontconfig
1495     libfreetype
1496     libfribidi
1497     libgme
1498     libgsm
1499     libiec61883
1500     libilbc
1501     libkvazaar
1502     libmodplug
1503     libmp3lame
1504     libnut
1505     libopencore_amrnb
1506     libopencore_amrwb
1507     libopencv
1508     libopenh264
1509     libopenjpeg
1510     libopenmpt
1511     libopus
1512     libpulse
1513     librtmp
1514     librubberband
1515     libschroedinger
1516     libshine
1517     libsmbclient
1518     libsnappy
1519     libsoxr
1520     libspeex
1521     libssh
1522     libtesseract
1523     libtheora
1524     libtwolame
1525     libv4l2
1526     libvidstab
1527     libvo_amrwbenc
1528     libvorbis
1529     libvpx
1530     libwavpack
1531     libwebp
1532     libx264
1533     libx265
1534     libxavs
1535     libxcb
1536     libxcb_shm
1537     libxcb_shape
1538     libxcb_xfixes
1539     libxvid
1540     libzimg
1541     libzmq
1542     libzvbi
1543     lzma
1544     mediacodec
1545     netcdf
1546     openal
1547     opencl
1548     opengl
1549     openssl
1550     schannel
1551     sdl
1552     sdl2
1553     securetransport
1554     videotoolbox
1555     x11grab
1556     xlib
1557     zlib
1558 "
1559
1560 HWACCEL_LIBRARY_LIST="
1561     audiotoolbox
1562     cuda
1563     cuvid
1564     d3d11va
1565     dxva2
1566     libmfx
1567     libnpp
1568     mmal
1569     nvenc
1570     omx
1571     vaapi
1572     vda
1573     vdpau
1574     videotoolbox_hwaccel
1575     xvmc
1576 "
1577
1578 DOCUMENT_LIST="
1579     doc
1580     htmlpages
1581     manpages
1582     podpages
1583     txtpages
1584 "
1585
1586 FEATURE_LIST="
1587     ftrapv
1588     gray
1589     hardcoded_tables
1590     omx_rpi
1591     runtime_cpudetect
1592     safe_bitstream_reader
1593     shared
1594     small
1595     static
1596     swscale_alpha
1597 "
1598
1599 LIBRARY_LIST="
1600     avcodec
1601     avdevice
1602     avfilter
1603     avformat
1604     avresample
1605     avutil
1606     postproc
1607     swresample
1608     swscale
1609 "
1610
1611 LICENSE_LIST="
1612     gpl
1613     nonfree
1614     version3
1615 "
1616
1617 PROGRAM_LIST="
1618     ffplay
1619     ffprobe
1620     ffserver
1621     ffmpeg
1622 "
1623
1624 SUBSYSTEM_LIST="
1625     dct
1626     dwt
1627     error_resilience
1628     faan
1629     fast_unaligned
1630     fft
1631     lsp
1632     lzo
1633     mdct
1634     pixelutils
1635     network
1636     rdft
1637 "
1638
1639 CONFIG_LIST="
1640     $COMPONENT_LIST
1641     $DOCUMENT_LIST
1642     $EXAMPLE_LIST
1643     $EXTERNAL_LIBRARY_LIST
1644     $HWACCEL_LIBRARY_LIST
1645     $FEATURE_LIST
1646     $LICENSE_LIST
1647     $LIBRARY_LIST
1648     $PROGRAM_LIST
1649     $SUBSYSTEM_LIST
1650     fontconfig
1651     memalign_hack
1652     memory_poisoning
1653     neon_clobber_test
1654     pic
1655     pod2man
1656     raise_major
1657     thumb
1658     valgrind_backtrace
1659     xmm_clobber_test
1660 "
1661
1662 THREADS_LIST="
1663     pthreads
1664     os2threads
1665     w32threads
1666 "
1667
1668 ATOMICS_LIST="
1669     atomics_gcc
1670     atomics_suncc
1671     atomics_win32
1672 "
1673
1674 ARCH_LIST="
1675     aarch64
1676     alpha
1677     arm
1678     avr32
1679     avr32_ap
1680     avr32_uc
1681     bfin
1682     ia64
1683     m68k
1684     mips
1685     mips64
1686     parisc
1687     ppc
1688     ppc64
1689     s390
1690     sh4
1691     sparc
1692     sparc64
1693     tilegx
1694     tilepro
1695     tomi
1696     x86
1697     x86_32
1698     x86_64
1699 "
1700
1701 ARCH_EXT_LIST_ARM="
1702     armv5te
1703     armv6
1704     armv6t2
1705     armv8
1706     neon
1707     vfp
1708     vfpv3
1709     setend
1710 "
1711
1712 ARCH_EXT_LIST_MIPS="
1713     mipsfpu
1714     mips32r2
1715     mips32r5
1716     mips64r2
1717     mips32r6
1718     mips64r6
1719     mipsdsp
1720     mipsdspr2
1721     msa
1722 "
1723
1724 ARCH_EXT_LIST_LOONGSON="
1725     loongson2
1726     loongson3
1727     mmi
1728 "
1729
1730 ARCH_EXT_LIST_X86_SIMD="
1731     aesni
1732     amd3dnow
1733     amd3dnowext
1734     avx
1735     avx2
1736     fma3
1737     fma4
1738     mmx
1739     mmxext
1740     sse
1741     sse2
1742     sse3
1743     sse4
1744     sse42
1745     ssse3
1746     xop
1747 "
1748
1749 ARCH_EXT_LIST_PPC="
1750     altivec
1751     dcbzl
1752     ldbrx
1753     power8
1754     ppc4xx
1755     vsx
1756 "
1757
1758 ARCH_EXT_LIST_X86="
1759     $ARCH_EXT_LIST_X86_SIMD
1760     cpunop
1761     i686
1762 "
1763
1764 ARCH_EXT_LIST="
1765     $ARCH_EXT_LIST_ARM
1766     $ARCH_EXT_LIST_PPC
1767     $ARCH_EXT_LIST_X86
1768     $ARCH_EXT_LIST_MIPS
1769     $ARCH_EXT_LIST_LOONGSON
1770 "
1771
1772 ARCH_FEATURES="
1773     aligned_stack
1774     fast_64bit
1775     fast_clz
1776     fast_cmov
1777     local_aligned_8
1778     local_aligned_16
1779     local_aligned_32
1780     simd_align_16
1781 "
1782
1783 BUILTIN_LIST="
1784     atomic_cas_ptr
1785     atomic_compare_exchange
1786     machine_rw_barrier
1787     MemoryBarrier
1788     mm_empty
1789     rdtsc
1790     sarestart
1791     sem_timedwait
1792     sync_val_compare_and_swap
1793 "
1794 HAVE_LIST_CMDLINE="
1795     inline_asm
1796     symver
1797     yasm
1798 "
1799
1800 HAVE_LIST_PUB="
1801     bigendian
1802     fast_unaligned
1803 "
1804
1805 HEADERS_LIST="
1806     alsa_asoundlib_h
1807     altivec_h
1808     arpa_inet_h
1809     asm_types_h
1810     cdio_paranoia_h
1811     cdio_paranoia_paranoia_h
1812     dispatch_dispatch_h
1813     dev_bktr_ioctl_bt848_h
1814     dev_bktr_ioctl_meteor_h
1815     dev_ic_bt8xx_h
1816     dev_video_bktr_ioctl_bt848_h
1817     dev_video_meteor_ioctl_meteor_h
1818     direct_h
1819     dirent_h
1820     dlfcn_h
1821     d3d11_h
1822     dxva_h
1823     ES2_gl_h
1824     gsm_h
1825     io_h
1826     mach_mach_time_h
1827     machine_ioctl_bt848_h
1828     machine_ioctl_meteor_h
1829     malloc_h
1830     opencv2_core_core_c_h
1831     openjpeg_2_1_openjpeg_h
1832     openjpeg_2_0_openjpeg_h
1833     openjpeg_1_5_openjpeg_h
1834     OpenGL_gl3_h
1835     poll_h
1836     sndio_h
1837     soundcard_h
1838     sys_mman_h
1839     sys_param_h
1840     sys_resource_h
1841     sys_select_h
1842     sys_soundcard_h
1843     sys_time_h
1844     sys_un_h
1845     sys_videoio_h
1846     termios_h
1847     udplite_h
1848     unistd_h
1849     valgrind_valgrind_h
1850     windows_h
1851     winsock2_h
1852 "
1853
1854 INTRINSICS_LIST="
1855     intrinsics_neon
1856 "
1857
1858 COMPLEX_FUNCS="
1859     cabs
1860     cexp
1861 "
1862
1863 MATH_FUNCS="
1864     atanf
1865     atan2f
1866     cbrt
1867     cbrtf
1868     copysign
1869     cosf
1870     erf
1871     exp2
1872     exp2f
1873     expf
1874     hypot
1875     isfinite
1876     isinf
1877     isnan
1878     ldexpf
1879     llrint
1880     llrintf
1881     log2
1882     log2f
1883     log10f
1884     lrint
1885     lrintf
1886     powf
1887     rint
1888     round
1889     roundf
1890     sinf
1891     trunc
1892     truncf
1893 "
1894
1895 SYSTEM_FUNCS="
1896     access
1897     aligned_malloc
1898     arc4random
1899     clock_gettime
1900     closesocket
1901     CommandLineToArgvW
1902     CoTaskMemFree
1903     CryptGenRandom
1904     dlopen
1905     fcntl
1906     flt_lim
1907     fork
1908     getaddrinfo
1909     gethrtime
1910     getopt
1911     GetProcessAffinityMask
1912     GetProcessMemoryInfo
1913     GetProcessTimes
1914     getrusage
1915     GetSystemTimeAsFileTime
1916     gettimeofday
1917     glob
1918     glXGetProcAddress
1919     gmtime_r
1920     inet_aton
1921     isatty
1922     jack_port_get_latency_range
1923     kbhit
1924     LoadLibrary
1925     localtime_r
1926     lstat
1927     lzo1x_999_compress
1928     mach_absolute_time
1929     MapViewOfFile
1930     memalign
1931     mkstemp
1932     mmap
1933     mprotect
1934     nanosleep
1935     PeekNamedPipe
1936     posix_memalign
1937     pthread_cancel
1938     sched_getaffinity
1939     SetConsoleTextAttribute
1940     SetConsoleCtrlHandler
1941     setmode
1942     setrlimit
1943     Sleep
1944     strerror_r
1945     sysconf
1946     sysctl
1947     usleep
1948     UTGetOSTypeFromString
1949     VirtualAlloc
1950     wglGetProcAddress
1951 "
1952
1953 TOOLCHAIN_FEATURES="
1954     as_dn_directive
1955     as_func
1956     as_object_arch
1957     asm_mod_q
1958     attribute_may_alias
1959     attribute_packed
1960     ebp_available
1961     ebx_available
1962     gnu_as
1963     gnu_windres
1964     ibm_asm
1965     inline_asm_direct_symbol_refs
1966     inline_asm_labels
1967     inline_asm_nonlocal_labels
1968     pragma_deprecated
1969     rsync_contimeout
1970     symver_asm_label
1971     symver_gnu_asm
1972     vfp_args
1973     xform_asm
1974     xmm_clobbers
1975 "
1976
1977 TYPES_LIST="
1978     CONDITION_VARIABLE_Ptr
1979     socklen_t
1980     struct_addrinfo
1981     struct_group_source_req
1982     struct_ip_mreq_source
1983     struct_ipv6_mreq
1984     struct_msghdr_msg_flags
1985     struct_pollfd
1986     struct_rusage_ru_maxrss
1987     struct_sctp_event_subscribe
1988     struct_sockaddr_in6
1989     struct_sockaddr_sa_len
1990     struct_sockaddr_storage
1991     struct_stat_st_mtim_tv_nsec
1992     struct_v4l2_frmivalenum_discrete
1993 "
1994
1995 HAVE_LIST="
1996     $ARCH_EXT_LIST
1997     $(add_suffix _external $ARCH_EXT_LIST)
1998     $(add_suffix _inline   $ARCH_EXT_LIST)
1999     $ARCH_FEATURES
2000     $ATOMICS_LIST
2001     $BUILTIN_LIST
2002     $COMPLEX_FUNCS
2003     $HAVE_LIST_CMDLINE
2004     $HAVE_LIST_PUB
2005     $HEADERS_LIST
2006     $INTRINSICS_LIST
2007     $MATH_FUNCS
2008     $SYSTEM_FUNCS
2009     $THREADS_LIST
2010     $TOOLCHAIN_FEATURES
2011     $TYPES_LIST
2012     atomics_native
2013     dos_paths
2014     dxva2_lib
2015     dxva2api_cobj
2016     libc_msvcrt
2017     libdc1394_1
2018     libdc1394_2
2019     makeinfo
2020     makeinfo_html
2021     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2022     perl
2023     pod2man
2024     sdl2
2025     section_data_rel_ro
2026     texi2html
2027     threads
2028     vaapi_drm
2029     vaapi_x11
2030     vdpau_x11
2031     winrt
2032     xlib
2033 "
2034
2035 # options emitted with CONFIG_ prefix but not available on the command line
2036 CONFIG_EXTRA="
2037     aandcttables
2038     ac3dsp
2039     audio_frame_queue
2040     audiodsp
2041     blockdsp
2042     bswapdsp
2043     cabac
2044     dirac_parse
2045     dvprofile
2046     exif
2047     faandct
2048     faanidct
2049     fdctdsp
2050     flacdsp
2051     fmtconvert
2052     frame_thread_encoder
2053     g722dsp
2054     golomb
2055     gplv3
2056     h263dsp
2057     h264chroma
2058     h264dsp
2059     h264parse
2060     h264pred
2061     h264qpel
2062     hpeldsp
2063     huffman
2064     huffyuvdsp
2065     huffyuvencdsp
2066     idctdsp
2067     iirfilter
2068     imdct15
2069     intrax8
2070     iso_media
2071     ividsp
2072     jpegtables
2073     lgplv3
2074     libx262
2075     llauddsp
2076     llviddsp
2077     lpc
2078     lzf
2079     me_cmp
2080     mpeg_er
2081     mpegaudio
2082     mpegaudiodsp
2083     mpegvideo
2084     mpegvideoenc
2085     mss34dsp
2086     pixblockdsp
2087     qpeldsp
2088     qsv
2089     qsvdec
2090     qsvenc
2091     rangecoder
2092     riffdec
2093     riffenc
2094     rtpdec
2095     rtpenc_chain
2096     rv34dsp
2097     sinewin
2098     snappy
2099     srtp
2100     startcode
2101     texturedsp
2102     texturedspenc
2103     tpeldsp
2104     vaapi_encode
2105     vc1dsp
2106     videodsp
2107     vp3dsp
2108     vp56dsp
2109     vp8dsp
2110     vt_bt2020
2111     wma_freqs
2112     wmv2dsp
2113 "
2114
2115 CMDLINE_SELECT="
2116     $ARCH_EXT_LIST
2117     $CONFIG_LIST
2118     $HAVE_LIST_CMDLINE
2119     $THREADS_LIST
2120     asm
2121     cross_compile
2122     debug
2123     extra_warnings
2124     logging
2125     lto
2126     optimizations
2127     rpath
2128     stripping
2129 "
2130
2131 PATHS_LIST="
2132     bindir
2133     datadir
2134     docdir
2135     incdir
2136     libdir
2137     mandir
2138     pkgconfigdir
2139     prefix
2140     shlibdir
2141     install_name_dir
2142 "
2143
2144 CMDLINE_SET="
2145     $PATHS_LIST
2146     ar
2147     arch
2148     as
2149     assert_level
2150     build_suffix
2151     cc
2152     objcc
2153     cpu
2154     cross_prefix
2155     custom_allocator
2156     cxx
2157     dep_cc
2158     doxygen
2159     env
2160     extra_version
2161     gas
2162     host_cc
2163     host_cflags
2164     host_ld
2165     host_ldflags
2166     host_libs
2167     host_os
2168     install
2169     ld
2170     ln_s
2171     logfile
2172     malloc_prefix
2173     nm
2174     optflags
2175     pkg_config
2176     pkg_config_flags
2177     progs_suffix
2178     random_seed
2179     ranlib
2180     samples
2181     strip
2182     sws_max_filter_size
2183     sysinclude
2184     sysroot
2185     target_exec
2186     target_os
2187     target_path
2188     target_samples
2189     tempprefix
2190     toolchain
2191     valgrind
2192     yasmexe
2193 "
2194
2195 CMDLINE_APPEND="
2196     extra_cflags
2197     extra_cxxflags
2198     extra_objcflags
2199     host_cppflags
2200 "
2201
2202 # code dependency declarations
2203
2204 # architecture extensions
2205
2206 armv5te_deps="arm"
2207 armv6_deps="arm"
2208 armv6t2_deps="arm"
2209 armv8_deps="aarch64"
2210 neon_deps_any="aarch64 arm"
2211 intrinsics_neon_deps="neon"
2212 vfp_deps_any="aarch64 arm"
2213 vfpv3_deps="vfp"
2214 setend_deps="arm"
2215
2216 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2217
2218 loongson2_deps="mips"
2219 loongson3_deps="mips"
2220 mipsfpu_deps="mips"
2221 mipsdsp_deps="mips"
2222 mipsdspr2_deps="mips"
2223 mips32r2_deps="mips"
2224 mips32r5_deps="mips"
2225 mips32r6_deps="mips"
2226 mips64r2_deps="mips"
2227 mips64r6_deps="mips"
2228 msa_deps="mipsfpu"
2229 mmi_deps="mips"
2230
2231 altivec_deps="ppc"
2232 dcbzl_deps="ppc"
2233 ldbrx_deps="ppc"
2234 ppc4xx_deps="ppc"
2235 vsx_deps="altivec"
2236 power8_deps="vsx"
2237
2238 cpunop_deps="i686"
2239 x86_64_select="i686"
2240 x86_64_suggest="fast_cmov"
2241
2242 amd3dnow_deps="mmx"
2243 amd3dnowext_deps="amd3dnow"
2244 i686_deps="x86"
2245 mmx_deps="x86"
2246 mmxext_deps="mmx"
2247 sse_deps="mmxext"
2248 sse2_deps="sse"
2249 sse3_deps="sse2"
2250 ssse3_deps="sse3"
2251 sse4_deps="ssse3"
2252 sse42_deps="sse4"
2253 aesni_deps="sse42"
2254 avx_deps="sse42"
2255 xop_deps="avx"
2256 fma3_deps="avx"
2257 fma4_deps="avx"
2258 avx2_deps="avx"
2259
2260 mmx_external_deps="yasm"
2261 mmx_inline_deps="inline_asm"
2262 mmx_suggest="mmx_external mmx_inline"
2263
2264 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2265     eval dep=\$${ext}_deps
2266     eval ${ext}_external_deps='"${dep}_external"'
2267     eval ${ext}_inline_deps='"${dep}_inline"'
2268     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2269 done
2270
2271 aligned_stack_if_any="aarch64 ppc x86"
2272 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2273 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2274 fast_unaligned_if_any="aarch64 ppc x86"
2275 simd_align_16_if_any="altivec neon sse"
2276
2277 # system capabilities
2278 symver_if_any="symver_asm_label symver_gnu_asm"
2279 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
2280
2281 # threading support
2282 atomics_gcc_if_any="sync_val_compare_and_swap atomic_compare_exchange"
2283 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2284 atomics_win32_if="MemoryBarrier"
2285 atomics_native_if_any="$ATOMICS_LIST"
2286 w32threads_deps="atomics_native"
2287 threads_if_any="$THREADS_LIST"
2288
2289 # subsystems
2290 dct_select="rdft"
2291 dirac_parse_select="golomb"
2292 error_resilience_select="me_cmp"
2293 faandct_deps="faan fdctdsp"
2294 faanidct_deps="faan idctdsp"
2295 h264dsp_select="startcode"
2296 frame_thread_encoder_deps="encoders threads"
2297 intrax8_select="blockdsp idctdsp"
2298 mdct_select="fft"
2299 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2300 mpeg_er_select="error_resilience"
2301 mpegaudio_select="mpegaudiodsp"
2302 mpegaudiodsp_select="dct"
2303 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2304 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2305 vc1dsp_select="h264chroma qpeldsp startcode"
2306 rdft_select="fft"
2307
2308 # decoders / encoders
2309 aac_decoder_select="imdct15 mdct sinewin"
2310 aac_fixed_decoder_select="mdct sinewin"
2311 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2312 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2313 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2314 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2315 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2316 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2317 adpcm_g722_decoder_select="g722dsp"
2318 adpcm_g722_encoder_select="g722dsp"
2319 aic_decoder_select="golomb idctdsp"
2320 alac_encoder_select="lpc"
2321 als_decoder_select="bswapdsp"
2322 amrnb_decoder_select="lsp"
2323 amrwb_decoder_select="lsp"
2324 amv_decoder_select="sp5x_decoder exif"
2325 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2326 ape_decoder_select="bswapdsp llauddsp"
2327 apng_decoder_select="zlib"
2328 apng_encoder_select="huffyuvencdsp zlib"
2329 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2330 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2331 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2332 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2333 atrac1_decoder_select="mdct sinewin"
2334 atrac3_decoder_select="mdct"
2335 atrac3p_decoder_select="mdct sinewin"
2336 avrn_decoder_select="exif jpegtables"
2337 bink_decoder_select="blockdsp hpeldsp"
2338 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2339 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2340 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2341 cllc_decoder_select="bswapdsp"
2342 comfortnoise_encoder_select="lpc"
2343 cook_decoder_select="audiodsp mdct sinewin"
2344 cscd_decoder_select="lzo"
2345 cscd_decoder_suggest="zlib"
2346 dca_decoder_select="mdct"
2347 dds_decoder_select="texturedsp"
2348 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2349 dnxhd_decoder_select="blockdsp idctdsp"
2350 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2351 dvvideo_decoder_select="dvprofile idctdsp"
2352 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2353 dxa_decoder_select="zlib"
2354 dxv_decoder_select="lzf texturedsp"
2355 eac3_decoder_select="ac3_decoder"
2356 eac3_encoder_select="ac3_encoder"
2357 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2358 eatgq_decoder_select="aandcttables"
2359 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2360 exr_decoder_select="zlib"
2361 ffv1_decoder_select="golomb rangecoder"
2362 ffv1_encoder_select="rangecoder"
2363 ffvhuff_decoder_select="huffyuv_decoder"
2364 ffvhuff_encoder_select="huffyuv_encoder"
2365 fic_decoder_select="golomb"
2366 flac_decoder_select="flacdsp golomb"
2367 flac_encoder_select="bswapdsp flacdsp golomb lpc"
2368 flashsv2_decoder_select="zlib"
2369 flashsv2_encoder_select="zlib"
2370 flashsv_decoder_select="zlib"
2371 flashsv_encoder_select="zlib"
2372 flv_decoder_select="h263_decoder"
2373 flv_encoder_select="h263_encoder"
2374 fourxm_decoder_select="blockdsp bswapdsp"
2375 fraps_decoder_select="bswapdsp huffman"
2376 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2377 g729_decoder_select="audiodsp"
2378 h261_decoder_select="mpegvideo"
2379 h261_encoder_select="aandcttables mpegvideoenc"
2380 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2381 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2382 h263i_decoder_select="h263_decoder"
2383 h263p_decoder_select="h263_decoder"
2384 h263p_encoder_select="h263_encoder"
2385 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2386 h264_decoder_suggest="error_resilience"
2387 hap_decoder_select="snappy texturedsp"
2388 hap_encoder_deps="libsnappy"
2389 hap_encoder_select="texturedspenc"
2390 hevc_decoder_select="bswapdsp cabac golomb videodsp"
2391 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2392 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llviddsp"
2393 iac_decoder_select="imc_decoder"
2394 imc_decoder_select="bswapdsp fft mdct sinewin"
2395 indeo3_decoder_select="hpeldsp"
2396 indeo4_decoder_select="ividsp"
2397 indeo5_decoder_select="ividsp"
2398 interplay_video_decoder_select="hpeldsp"
2399 jpegls_decoder_select="golomb mjpeg_decoder"
2400 jpegls_encoder_select="golomb"
2401 jv_decoder_select="blockdsp"
2402 lagarith_decoder_select="huffyuvdsp"
2403 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2404 loco_decoder_select="golomb"
2405 magicyuv_decoder_select="huffyuvdsp"
2406 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2407 metasound_decoder_select="lsp mdct sinewin"
2408 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2409 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2410 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2411 mjpegb_decoder_select="mjpeg_decoder"
2412 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2413 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2414 mlp_decoder_select="mlp_parser"
2415 motionpixels_decoder_select="bswapdsp"
2416 mp1_decoder_select="mpegaudio"
2417 mp1float_decoder_select="mpegaudio"
2418 mp2_decoder_select="mpegaudio"
2419 mp2float_decoder_select="mpegaudio"
2420 mp3_decoder_select="mpegaudio"
2421 mp3adu_decoder_select="mpegaudio"
2422 mp3adufloat_decoder_select="mpegaudio"
2423 mp3float_decoder_select="mpegaudio"
2424 mp3on4_decoder_select="mpegaudio"
2425 mp3on4float_decoder_select="mpegaudio"
2426 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2427 mpc8_decoder_select="mpegaudiodsp"
2428 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2429 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2430 mpegvideo_decoder_select="mpegvideo"
2431 mpeg1video_decoder_select="mpegvideo"
2432 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2433 mpeg2video_decoder_select="mpegvideo"
2434 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2435 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2436 mpeg4_encoder_select="h263_encoder"
2437 msa1_decoder_select="mss34dsp"
2438 msmpeg4v1_decoder_select="h263_decoder"
2439 msmpeg4v2_decoder_select="h263_decoder"
2440 msmpeg4v2_encoder_select="h263_encoder"
2441 msmpeg4v3_decoder_select="h263_decoder"
2442 msmpeg4v3_encoder_select="h263_encoder"
2443 mss2_decoder_select="vc1_decoder mpegvideo"
2444 mts2_decoder_select="mss34dsp"
2445 mxpeg_decoder_select="mjpeg_decoder"
2446 nellymoser_decoder_select="mdct sinewin"
2447 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2448 nuv_decoder_select="idctdsp lzo"
2449 on2avc_decoder_select="mdct"
2450 opus_decoder_deps="swresample"
2451 opus_decoder_select="imdct15"
2452 png_decoder_select="zlib"
2453 png_encoder_select="huffyuvencdsp zlib"
2454 prores_decoder_select="blockdsp idctdsp"
2455 prores_encoder_select="fdctdsp"
2456 qcelp_decoder_select="lsp"
2457 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2458 ra_144_decoder_select="audiodsp"
2459 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2460 ralf_decoder_select="golomb"
2461 rawvideo_decoder_select="bswapdsp"
2462 rscc_decoder_select="zlib"
2463 rtjpeg_decoder_select="me_cmp"
2464 rv10_decoder_select="h263_decoder"
2465 rv10_encoder_select="h263_encoder"
2466 rv20_decoder_select="h263_decoder"
2467 rv20_encoder_select="h263_encoder"
2468 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2469 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2470 screenpresso_decoder_select="zlib"
2471 shorten_decoder_select="golomb"
2472 sipr_decoder_select="lsp"
2473 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2474 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2475 sonic_decoder_select="golomb rangecoder"
2476 sonic_encoder_select="golomb rangecoder"
2477 sonic_ls_encoder_select="golomb rangecoder"
2478 sp5x_decoder_select="mjpeg_decoder"
2479 svq1_decoder_select="hpeldsp"
2480 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2481 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2482 svq3_decoder_suggest="zlib"
2483 tak_decoder_select="audiodsp"
2484 tdsc_decoder_select="zlib mjpeg_decoder"
2485 theora_decoder_select="vp3_decoder"
2486 thp_decoder_select="mjpeg_decoder"
2487 tiff_decoder_suggest="zlib lzma"
2488 tiff_encoder_suggest="zlib"
2489 truehd_decoder_select="mlp_parser"
2490 truemotion2_decoder_select="bswapdsp"
2491 truespeech_decoder_select="bswapdsp"
2492 tscc_decoder_select="zlib"
2493 twinvq_decoder_select="mdct lsp sinewin"
2494 txd_decoder_select="texturedsp"
2495 utvideo_decoder_select="bswapdsp"
2496 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2497 vble_decoder_select="huffyuvdsp"
2498 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2499 vc1_qsv_decoder_deps="libmfx"
2500 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel"
2501 vc1image_decoder_select="vc1_decoder"
2502 vorbis_decoder_select="mdct"
2503 vorbis_encoder_select="mdct"
2504 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2505 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2506 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2507 vp6a_decoder_select="vp6_decoder"
2508 vp6f_decoder_select="vp6_decoder"
2509 vp7_decoder_select="h264pred videodsp vp8dsp"
2510 vp8_decoder_select="h264pred videodsp vp8dsp"
2511 vp9_decoder_select="videodsp vp9_parser"
2512 webp_decoder_select="vp8_decoder exif"
2513 wmalossless_decoder_select="llauddsp"
2514 wmapro_decoder_select="mdct sinewin wma_freqs"
2515 wmav1_decoder_select="mdct sinewin wma_freqs"
2516 wmav1_encoder_select="mdct sinewin wma_freqs"
2517 wmav2_decoder_select="mdct sinewin wma_freqs"
2518 wmav2_encoder_select="mdct sinewin wma_freqs"
2519 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2520 wmv1_decoder_select="h263_decoder"
2521 wmv1_encoder_select="h263_encoder"
2522 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2523 wmv2_encoder_select="h263_encoder wmv2dsp"
2524 wmv3_decoder_select="vc1_decoder"
2525 wmv3image_decoder_select="wmv3_decoder"
2526 xma1_decoder_select="wmapro_decoder"
2527 xma2_decoder_select="wmapro_decoder"
2528 zerocodec_decoder_select="zlib"
2529 zlib_decoder_select="zlib"
2530 zlib_encoder_select="zlib"
2531 zmbv_decoder_select="zlib"
2532 zmbv_encoder_select="zlib"
2533
2534 # platform codecs
2535 audiotoolbox_deps="AudioToolbox_AudioToolbox_h"
2536 audiotoolbox_extralibs="-framework CoreFoundation -framework AudioToolbox -framework CoreMedia"
2537
2538 # hardware accelerators
2539 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2540 cuda_deps_any="dlopen LoadLibrary"
2541 cuvid_deps="cuda"
2542 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2543 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2544 dxva2_extralibs="-luser32"
2545 vaapi_deps="va_va_h"
2546 vda_framework_deps="VideoDecodeAcceleration_VDADecoder_h"
2547 vda_framework_extralibs="-framework VideoDecodeAcceleration"
2548 vda_deps="vda_framework pthreads"
2549 vda_extralibs="-framework CoreFoundation -framework QuartzCore"
2550 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2551 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2552 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2553 xvmc_deps="X11_extensions_XvMClib_h"
2554
2555 h263_vaapi_hwaccel_deps="vaapi"
2556 h263_vaapi_hwaccel_select="h263_decoder"
2557 h263_videotoolbox_hwaccel_deps="videotoolbox"
2558 h263_videotoolbox_hwaccel_select="h263_decoder"
2559 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2560 h264_cuvid_hwaccel_deps="cuda cuvid"
2561 h264_d3d11va_hwaccel_deps="d3d11va"
2562 h264_d3d11va_hwaccel_select="h264_decoder"
2563 h264_dxva2_hwaccel_deps="dxva2"
2564 h264_dxva2_hwaccel_select="h264_decoder"
2565 h264_mediacodec_decoder_deps="mediacodec"
2566 h264_mediacodec_hwaccel_deps="mediacodec"
2567 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2568 h264_mmal_decoder_deps="mmal"
2569 h264_mmal_decoder_select="mmal"
2570 h264_mmal_hwaccel_deps="mmal"
2571 h264_omx_encoder_deps="omx"
2572 h264_qsv_hwaccel_deps="libmfx"
2573 h264_vaapi_hwaccel_deps="vaapi"
2574 h264_vaapi_hwaccel_select="h264_decoder"
2575 h264_vda_decoder_deps="vda"
2576 h264_vda_decoder_select="h264_decoder"
2577 h264_vda_hwaccel_deps="vda"
2578 h264_vda_hwaccel_select="h264_decoder"
2579 h264_vda_old_hwaccel_deps="vda"
2580 h264_vda_old_hwaccel_select="h264_decoder"
2581 h264_vdpau_decoder_deps="vdpau"
2582 h264_vdpau_decoder_select="h264_decoder"
2583 h264_vdpau_hwaccel_deps="vdpau"
2584 h264_vdpau_hwaccel_select="h264_decoder"
2585 h264_videotoolbox_hwaccel_deps="videotoolbox"
2586 h264_videotoolbox_hwaccel_select="h264_decoder"
2587 hevc_cuvid_hwaccel_deps="cuda cuvid"
2588 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2589 hevc_d3d11va_hwaccel_select="hevc_decoder"
2590 hevc_mediacodec_decoder_deps="mediacodec"
2591 hevc_mediacodec_hwaccel_deps="mediacodec"
2592 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2593 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2594 hevc_dxva2_hwaccel_select="hevc_decoder"
2595 hevc_qsv_hwaccel_deps="libmfx"
2596 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2597 hevc_vaapi_hwaccel_select="hevc_decoder"
2598 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2599 hevc_vdpau_hwaccel_select="hevc_decoder"
2600 mjpeg_cuvid_hwaccel_deps="cuda cuvid"
2601 mpeg_vdpau_decoder_deps="vdpau"
2602 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2603 mpeg_xvmc_hwaccel_deps="xvmc"
2604 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2605 mpeg1_cuvid_hwaccel_deps="cuda cuvid"
2606 mpeg1_vdpau_decoder_deps="vdpau"
2607 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2608 mpeg1_vdpau_hwaccel_deps="vdpau"
2609 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2610 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2611 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2612 mpeg1_xvmc_hwaccel_deps="xvmc"
2613 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2614 mpeg2_crystalhd_decoder_select="crystalhd"
2615 mpeg2_cuvid_hwaccel_deps="cuda cuvid"
2616 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2617 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2618 mpeg2_dxva2_hwaccel_deps="dxva2"
2619 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2620 mpeg2_mmal_decoder_deps="mmal"
2621 mpeg2_mmal_decoder_select="mmal"
2622 mpeg2_mmal_hwaccel_deps="mmal"
2623 mpeg2_qsv_hwaccel_deps="libmfx"
2624 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2625 mpeg2_vaapi_hwaccel_deps="vaapi"
2626 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2627 mpeg2_vdpau_hwaccel_deps="vdpau"
2628 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2629 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2630 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2631 mpeg2_xvmc_hwaccel_deps="xvmc"
2632 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2633 mpeg4_crystalhd_decoder_select="crystalhd"
2634 mpeg4_cuvid_hwaccel_deps="cuda cuvid"
2635 mpeg4_mediacodec_decoder_deps="mediacodec"
2636 mpeg4_mediacodec_hwaccel_deps="mediacodec"
2637 mpeg4_mmal_decoder_deps="mmal"
2638 mpeg4_mmal_decoder_select="mmal"
2639 mpeg4_mmal_hwaccel_deps="mmal"
2640 mpeg4_omx_encoder_deps="omx"
2641 mpeg4_vaapi_hwaccel_deps="vaapi"
2642 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2643 mpeg4_vdpau_decoder_deps="vdpau"
2644 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2645 mpeg4_vdpau_hwaccel_deps="vdpau"
2646 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2647 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2648 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2649 msmpeg4_crystalhd_decoder_select="crystalhd"
2650 vc1_crystalhd_decoder_select="crystalhd"
2651 vc1_cuvid_hwaccel_deps="cuda cuvid"
2652 vc1_d3d11va_hwaccel_deps="d3d11va"
2653 vc1_d3d11va_hwaccel_select="vc1_decoder"
2654 vc1_dxva2_hwaccel_deps="dxva2"
2655 vc1_dxva2_hwaccel_select="vc1_decoder"
2656 vc1_mmal_decoder_deps="mmal"
2657 vc1_mmal_decoder_select="mmal"
2658 vc1_mmal_hwaccel_deps="mmal"
2659 vc1_qsv_hwaccel_deps="libmfx"
2660 vc1_qsv_hwaccel_select="qsvdec_vc1"
2661 vc1_vaapi_hwaccel_deps="vaapi"
2662 vc1_vaapi_hwaccel_select="vc1_decoder"
2663 vc1_vdpau_decoder_deps="vdpau"
2664 vc1_vdpau_decoder_select="vc1_decoder"
2665 vc1_vdpau_hwaccel_deps="vdpau"
2666 vc1_vdpau_hwaccel_select="vc1_decoder"
2667 vp8_cuvid_hwaccel_deps="cuda cuvid"
2668 vp9_cuvid_hwaccel_deps="cuda cuvid"
2669 vp8_mediacodec_decoder_deps="mediacodec"
2670 vp8_mediacodec_hwaccel_deps="mediacodec"
2671 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2672 vp9_d3d11va_hwaccel_select="vp9_decoder"
2673 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2674 vp9_dxva2_hwaccel_select="vp9_decoder"
2675 vp9_mediacodec_decoder_deps="mediacodec"
2676 vp9_mediacodec_hwaccel_deps="mediacodec"
2677 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9"
2678 vp9_vaapi_hwaccel_select="vp9_decoder"
2679 wmv3_crystalhd_decoder_select="crystalhd"
2680 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2681 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2682 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2683 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2684 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2685
2686 # hardware-accelerated codecs
2687 omx_deps="dlopen pthreads"
2688 omx_extralibs='$ldl'
2689 qsvdec_select="qsv"
2690 qsvenc_select="qsv"
2691 vaapi_encode_deps="vaapi"
2692
2693 hwupload_cuda_filter_deps="cuda"
2694 scale_npp_filter_deps="cuda libnpp"
2695
2696 nvenc_deps="cuda"
2697 nvenc_deps_any="dlopen LoadLibrary"
2698 nvenc_encoder_deps="nvenc"
2699 h264_cuvid_decoder_deps="cuda cuvid"
2700 h264_cuvid_decoder_select="h264_mp4toannexb_bsf h264_cuvid_hwaccel"
2701 h264_nvenc_encoder_deps="nvenc"
2702 h264_qsv_decoder_deps="libmfx"
2703 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2704 h264_qsv_encoder_deps="libmfx"
2705 h264_qsv_encoder_select="qsvenc"
2706 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2707 h264_vaapi_encoder_select="vaapi_encode golomb"
2708
2709 hevc_cuvid_decoder_deps="cuda cuvid"
2710 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf hevc_cuvid_hwaccel"
2711 hevc_nvenc_encoder_deps="nvenc"
2712 hevc_qsv_decoder_deps="libmfx"
2713 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2714 hevc_qsv_encoder_deps="libmfx"
2715 hevc_qsv_encoder_select="qsvenc"
2716 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2717 hevc_vaapi_encoder_select="vaapi_encode golomb"
2718 mjpeg_cuvid_decoder_deps="cuda cuvid"
2719 mjpeg_cuvid_decoder_select="mjpeg_cuvid_hwaccel"
2720 mpeg1_cuvid_decoder_deps="cuda cuvid"
2721 mpeg1_cuvid_decoder_select="mpeg1_cuvid_hwaccel"
2722 mpeg2_cuvid_decoder_deps="cuda cuvid"
2723 mpeg2_cuvid_decoder_select="mpeg2_cuvid_hwaccel"
2724 mpeg2_qsv_decoder_deps="libmfx"
2725 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2726 mpeg2_qsv_encoder_deps="libmfx"
2727 mpeg2_qsv_encoder_select="qsvenc"
2728 mpeg4_cuvid_decoder_deps="cuda cuvid"
2729 mpeg4_cuvid_decoder_select="mpeg4_cuvid_hwaccel"
2730 nvenc_h264_encoder_deps="nvenc"
2731 nvenc_hevc_encoder_deps="nvenc"
2732
2733 vc1_cuvid_decoder_deps="cuda cuvid"
2734 vc1_cuvid_decoder_select="vc1_cuvid_hwaccel"
2735 vp8_cuvid_decoder_deps="cuda cuvid"
2736 vp8_cuvid_decoder_select="vp8_cuvid_hwaccel"
2737 vp9_cuvid_decoder_deps="cuda cuvid"
2738 vp9_cuvid_decoder_select="vp9_cuvid_hwaccel"
2739
2740 # parsers
2741 h264_parser_select="golomb h264dsp h264parse"
2742 hevc_parser_select="golomb"
2743 mpegvideo_parser_select="mpegvideo"
2744 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2745 vc1_parser_select="vc1dsp"
2746
2747 # bitstream_filters
2748 mjpeg2jpeg_bsf_select="jpegtables"
2749
2750 # external libraries
2751 aac_at_decoder_deps="audiotoolbox"
2752 ac3_at_decoder_deps="audiotoolbox"
2753 ac3_at_decoder_select="ac3_parser"
2754 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2755 alac_at_decoder_deps="audiotoolbox"
2756 amr_nb_at_decoder_deps="audiotoolbox"
2757 avisynth_deps_any="dlopen LoadLibrary"
2758 avisynth_demuxer_deps="avisynth"
2759 avisynth_demuxer_select="riffdec"
2760 eac3_at_decoder_deps="audiotoolbox"
2761 eac3_at_decoder_select="ac3_parser"
2762 gsm_ms_at_decoder_deps="audiotoolbox"
2763 ilbc_at_decoder_deps="audiotoolbox"
2764 mp1_at_decoder_deps="audiotoolbox"
2765 mp2_at_decoder_deps="audiotoolbox"
2766 mp3_at_decoder_deps="audiotoolbox"
2767 pcm_alaw_at_decoder_deps="audiotoolbox"
2768 pcm_mulaw_at_decoder_deps="audiotoolbox"
2769 qdmc_at_decoder_deps="audiotoolbox"
2770 qdm2_at_decoder_deps="audiotoolbox"
2771 aac_at_encoder_deps="audiotoolbox"
2772 aac_at_encoder_select="audio_frame_queue"
2773 alac_at_encoder_deps="audiotoolbox"
2774 alac_at_encoder_select="audio_frame_queue"
2775 ilbc_at_encoder_deps="audiotoolbox"
2776 ilbc_at_encoder_select="audio_frame_queue"
2777 pcm_alaw_at_encoder_deps="audiotoolbox"
2778 pcm_alaw_at_encoder_select="audio_frame_queue"
2779 pcm_mulaw_at_encoder_deps="audiotoolbox"
2780 pcm_mulaw_at_encoder_select="audio_frame_queue"
2781 chromaprint_muxer_deps="chromaprint"
2782 h264_videotoolbox_encoder_deps="videotoolbox_encoder pthreads"
2783 libcelt_decoder_deps="libcelt"
2784 libfdk_aac_decoder_deps="libfdk_aac"
2785 libfdk_aac_encoder_deps="libfdk_aac"
2786 libfdk_aac_encoder_select="audio_frame_queue"
2787 libgme_demuxer_deps="libgme"
2788 libgsm_decoder_deps="libgsm"
2789 libgsm_encoder_deps="libgsm"
2790 libgsm_ms_decoder_deps="libgsm"
2791 libgsm_ms_encoder_deps="libgsm"
2792 libilbc_decoder_deps="libilbc"
2793 libilbc_encoder_deps="libilbc"
2794 libkvazaar_encoder_deps="libkvazaar"
2795 libmodplug_demuxer_deps="libmodplug"
2796 libmp3lame_encoder_deps="libmp3lame"
2797 libmp3lame_encoder_select="audio_frame_queue"
2798 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2799 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2800 libopencore_amrnb_encoder_select="audio_frame_queue"
2801 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2802 libopenh264_decoder_deps="libopenh264"
2803 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2804 libopenh264_encoder_deps="libopenh264"
2805 libopenjpeg_decoder_deps="libopenjpeg"
2806 libopenjpeg_encoder_deps="libopenjpeg"
2807 libopenmpt_demuxer_deps="libopenmpt"
2808 libopus_decoder_deps="libopus"
2809 libopus_encoder_deps="libopus"
2810 libopus_encoder_select="audio_frame_queue"
2811 libschroedinger_decoder_deps="libschroedinger"
2812 libschroedinger_encoder_deps="libschroedinger"
2813 libshine_encoder_deps="libshine"
2814 libshine_encoder_select="audio_frame_queue"
2815 libspeex_decoder_deps="libspeex"
2816 libspeex_encoder_deps="libspeex"
2817 libspeex_encoder_select="audio_frame_queue"
2818 libtheora_encoder_deps="libtheora"
2819 libtwolame_encoder_deps="libtwolame"
2820 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2821 libvorbis_decoder_deps="libvorbis"
2822 libvorbis_encoder_deps="libvorbis"
2823 libvorbis_encoder_select="audio_frame_queue"
2824 libvpx_vp8_decoder_deps="libvpx"
2825 libvpx_vp8_encoder_deps="libvpx"
2826 libvpx_vp9_decoder_deps="libvpx"
2827 libvpx_vp9_encoder_deps="libvpx"
2828 libwavpack_encoder_deps="libwavpack"
2829 libwebp_encoder_deps="libwebp"
2830 libwebp_anim_encoder_deps="libwebp"
2831 libx262_encoder_deps="libx262"
2832 libx264_encoder_deps="libx264"
2833 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2834 libx264rgb_encoder_select="libx264_encoder"
2835 libx265_encoder_deps="libx265"
2836 libxavs_encoder_deps="libxavs"
2837 libxvid_encoder_deps="libxvid"
2838 libzvbi_teletext_decoder_deps="libzvbi"
2839 videotoolbox_deps="VideoToolbox_VideoToolbox_h"
2840 videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework CoreVideo"
2841 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2842 videotoolbox_encoder_suggest="vda_framework vt_bt2020"
2843 vt_bt2020_deps="kCVImageBufferColorPrimaries_ITU_R_2020"
2844
2845 # demuxers / muxers
2846 ac3_demuxer_select="ac3_parser"
2847 asf_demuxer_select="riffdec"
2848 asf_o_demuxer_select="riffdec"
2849 asf_muxer_select="riffenc"
2850 asf_stream_muxer_select="asf_muxer"
2851 avi_demuxer_select="iso_media riffdec exif"
2852 avi_muxer_select="riffenc"
2853 caf_demuxer_select="iso_media riffdec"
2854 dash_muxer_select="mp4_muxer"
2855 dirac_demuxer_select="dirac_parser"
2856 dts_demuxer_select="dca_parser"
2857 dtshd_demuxer_select="dca_parser"
2858 dv_demuxer_select="dvprofile"
2859 dv_muxer_select="dvprofile"
2860 dxa_demuxer_select="riffdec"
2861 eac3_demuxer_select="ac3_parser"
2862 f4v_muxer_select="mov_muxer"
2863 fifo_muxer_deps="threads"
2864 flac_demuxer_select="flac_parser"
2865 hds_muxer_select="flv_muxer"
2866 hls_muxer_select="mpegts_muxer"
2867 image2_alias_pix_demuxer_select="image2_demuxer"
2868 image2_brender_pix_demuxer_select="image2_demuxer"
2869 ipod_muxer_select="mov_muxer"
2870 ismv_muxer_select="mov_muxer"
2871 libnut_demuxer_deps="libnut"
2872 libnut_muxer_deps="libnut"
2873 matroska_audio_muxer_select="matroska_muxer"
2874 matroska_demuxer_select="iso_media riffdec"
2875 matroska_demuxer_suggest="bzlib lzo zlib"
2876 matroska_muxer_select="iso_media riffenc"
2877 mmf_muxer_select="riffenc"
2878 mov_demuxer_select="iso_media riffdec"
2879 mov_demuxer_suggest="zlib"
2880 mov_muxer_select="iso_media riffenc rtpenc_chain"
2881 mp3_demuxer_select="mpegaudio_parser"
2882 mp4_muxer_select="mov_muxer"
2883 mpegts_demuxer_select="iso_media"
2884 mpegts_muxer_select="adts_muxer latm_muxer"
2885 mpegtsraw_demuxer_select="mpegts_demuxer"
2886 mxf_d10_muxer_select="mxf_muxer"
2887 mxf_opatom_muxer_select="mxf_muxer"
2888 nut_muxer_select="riffenc"
2889 nuv_demuxer_select="riffdec"
2890 oga_muxer_select="ogg_muxer"
2891 ogg_demuxer_select="dirac_parse"
2892 ogv_muxer_select="ogg_muxer"
2893 opus_muxer_select="ogg_muxer"
2894 psp_muxer_select="mov_muxer"
2895 rtp_demuxer_select="sdp_demuxer"
2896 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2897 rtsp_demuxer_select="http_protocol rtpdec"
2898 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2899 sap_demuxer_select="sdp_demuxer"
2900 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2901 sdp_demuxer_select="rtpdec"
2902 smoothstreaming_muxer_select="ismv_muxer"
2903 spdif_muxer_select="aac_parser"
2904 spx_muxer_select="ogg_muxer"
2905 swf_demuxer_suggest="zlib"
2906 tak_demuxer_select="tak_parser"
2907 tg2_muxer_select="mov_muxer"
2908 tgp_muxer_select="mov_muxer"
2909 vobsub_demuxer_select="mpegps_demuxer"
2910 w64_demuxer_select="wav_demuxer"
2911 w64_muxer_select="wav_muxer"
2912 wav_demuxer_select="riffdec"
2913 wav_muxer_select="riffenc"
2914 webm_muxer_select="iso_media riffenc"
2915 webm_dash_manifest_demuxer_select="matroska_demuxer"
2916 wtv_demuxer_select="mpegts_demuxer riffdec"
2917 wtv_muxer_select="mpegts_muxer riffenc"
2918 xmv_demuxer_select="riffdec"
2919 xwma_demuxer_select="riffdec"
2920
2921 # indevs / outdevs
2922 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2923 alsa_outdev_deps="alsa_asoundlib_h"
2924 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2925 avfoundation_indev_select="avfoundation"
2926 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2927 caca_outdev_deps="libcaca"
2928 decklink_indev_deps="decklink pthreads"
2929 decklink_indev_extralibs="-lstdc++"
2930 decklink_outdev_deps="decklink pthreads"
2931 decklink_outdev_extralibs="-lstdc++"
2932 dshow_indev_deps="IBaseFilter"
2933 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
2934 dv1394_indev_deps="dv1394"
2935 dv1394_indev_select="dv_demuxer"
2936 fbdev_indev_deps="linux_fb_h"
2937 fbdev_outdev_deps="linux_fb_h"
2938 gdigrab_indev_deps="CreateDIBSection"
2939 gdigrab_indev_extralibs="-lgdi32"
2940 gdigrab_indev_select="bmp_decoder"
2941 iec61883_indev_deps="libiec61883"
2942 jack_indev_deps="jack_jack_h"
2943 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2944 lavfi_indev_deps="avfilter"
2945 libcdio_indev_deps="libcdio"
2946 libdc1394_indev_deps="libdc1394"
2947 libv4l2_indev_deps="libv4l2"
2948 openal_indev_deps="openal"
2949 opengl_outdev_deps="opengl"
2950 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2951 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2952 pulse_indev_deps="libpulse"
2953 pulse_outdev_deps="libpulse"
2954 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2955 qtkit_indev_select="qtkit"
2956 sdl2_outdev_deps="sdl2"
2957 sndio_indev_deps="sndio_h"
2958 sndio_outdev_deps="sndio_h"
2959 v4l_indev_deps="linux_videodev_h"
2960 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2961 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2962 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2963 vfwcap_indev_extralibs="-lavicap32"
2964 x11grab_indev_deps="x11grab"
2965 x11grab_xcb_indev_deps="libxcb"
2966 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2967 xv_outdev_extralibs="-lXv -lX11 -lXext"
2968
2969 # protocols
2970 async_protocol_deps="threads"
2971 bluray_protocol_deps="libbluray"
2972 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2973 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
2974 ffrtmpcrypt_protocol_select="tcp_protocol"
2975 ffrtmphttp_protocol_deps="!librtmp_protocol"
2976 ffrtmphttp_protocol_select="http_protocol"
2977 ftp_protocol_select="tcp_protocol"
2978 gopher_protocol_select="network"
2979 http_protocol_select="tcp_protocol"
2980 httpproxy_protocol_select="tcp_protocol"
2981 https_protocol_select="tls_protocol"
2982 icecast_protocol_select="http_protocol"
2983 librtmp_protocol_deps="librtmp"
2984 librtmpe_protocol_deps="librtmp"
2985 librtmps_protocol_deps="librtmp"
2986 librtmpt_protocol_deps="librtmp"
2987 librtmpte_protocol_deps="librtmp"
2988 libsmbclient_protocol_deps="libsmbclient gplv3"
2989 libssh_protocol_deps="libssh"
2990 mmsh_protocol_select="http_protocol"
2991 mmst_protocol_select="network"
2992 rtmp_protocol_deps="!librtmp_protocol"
2993 rtmp_protocol_select="tcp_protocol"
2994 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2995 rtmps_protocol_deps="!librtmp_protocol"
2996 rtmps_protocol_select="tls_protocol"
2997 rtmpt_protocol_select="ffrtmphttp_protocol"
2998 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2999 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3000 rtp_protocol_select="udp_protocol"
3001 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3002 sctp_protocol_select="network"
3003 srtp_protocol_select="rtp_protocol srtp"
3004 tcp_protocol_select="network"
3005 tls_gnutls_protocol_deps="gnutls !tls_schannel_protocol !tls_securetransport_protocol"
3006 tls_gnutls_protocol_select="tcp_protocol"
3007 tls_openssl_protocol_deps="openssl !tls_schannel_protocol !tls_securetransport_protocol !tls_gnutls_protocol"
3008 tls_openssl_protocol_select="tcp_protocol"
3009 tls_schannel_protocol_deps="schannel"
3010 tls_schannel_protocol_select="tcp_protocol"
3011 tls_securetransport_protocol_deps="securetransport"
3012 tls_securetransport_protocol_select="tcp_protocol"
3013 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
3014 udp_protocol_select="network"
3015 udplite_protocol_select="network"
3016 unix_protocol_deps="sys_un_h"
3017 unix_protocol_select="network"
3018
3019 # filters
3020 afftfilt_filter_deps="avcodec"
3021 afftfilt_filter_select="fft"
3022 amovie_filter_deps="avcodec avformat"
3023 aresample_filter_deps="swresample"
3024 ass_filter_deps="libass"
3025 asyncts_filter_deps="avresample"
3026 atempo_filter_deps="avcodec"
3027 atempo_filter_select="rdft"
3028 azmq_filter_deps="libzmq"
3029 blackframe_filter_deps="gpl"
3030 boxblur_filter_deps="gpl"
3031 bs2b_filter_deps="libbs2b"
3032 colormatrix_filter_deps="gpl"
3033 cover_rect_filter_deps="avcodec avformat gpl"
3034 cropdetect_filter_deps="gpl"
3035 delogo_filter_deps="gpl"
3036 deshake_filter_select="pixelutils"
3037 drawtext_filter_deps="libfreetype"
3038 ebur128_filter_deps="gpl"
3039 eq_filter_deps="gpl"
3040 fftfilt_filter_deps="avcodec"
3041 fftfilt_filter_select="rdft"
3042 find_rect_filter_deps="avcodec avformat gpl"
3043 firequalizer_filter_deps="avcodec"
3044 firequalizer_filter_select="rdft"
3045 flite_filter_deps="libflite"
3046 framerate_filter_select="pixelutils"
3047 frei0r_filter_deps="frei0r dlopen"
3048 frei0r_src_filter_deps="frei0r dlopen"
3049 fspp_filter_deps="gpl"
3050 geq_filter_deps="gpl"
3051 histeq_filter_deps="gpl"
3052 hqdn3d_filter_deps="gpl"
3053 interlace_filter_deps="gpl"
3054 kerndeint_filter_deps="gpl"
3055 ladspa_filter_deps="ladspa dlopen"
3056 mcdeint_filter_deps="avcodec gpl"
3057 movie_filter_deps="avcodec avformat"
3058 mpdecimate_filter_deps="gpl"
3059 mpdecimate_filter_select="pixelutils"
3060 mptestsrc_filter_deps="gpl"
3061 negate_filter_deps="lut_filter"
3062 nnedi_filter_deps="gpl"
3063 ocr_filter_deps="libtesseract"
3064 ocv_filter_deps="libopencv"
3065 owdenoise_filter_deps="gpl"
3066 pan_filter_deps="swresample"
3067 perspective_filter_deps="gpl"
3068 phase_filter_deps="gpl"
3069 pp7_filter_deps="gpl"
3070 pp_filter_deps="gpl postproc"
3071 pullup_filter_deps="gpl"
3072 removelogo_filter_deps="avcodec avformat swscale"
3073 repeatfields_filter_deps="gpl"
3074 resample_filter_deps="avresample"
3075 rubberband_filter_deps="librubberband"
3076 sab_filter_deps="gpl swscale"
3077 scale2ref_filter_deps="swscale"
3078 scale_filter_deps="swscale"
3079 select_filter_select="pixelutils"
3080 showcqt_filter_deps="avcodec avformat swscale"
3081 showcqt_filter_select="fft"
3082 showfreqs_filter_deps="avcodec"
3083 showfreqs_filter_select="fft"
3084 showspectrum_filter_deps="avcodec"
3085 showspectrum_filter_select="fft"
3086 showspectrumpic_filter_deps="avcodec"
3087 showspectrumpic_filter_select="fft"
3088 smartblur_filter_deps="gpl swscale"
3089 sofalizer_filter_deps="netcdf avcodec"
3090 sofalizer_filter_select="fft"
3091 spectrumsynth_filter_deps="avcodec"
3092 spectrumsynth_filter_select="fft"
3093 spp_filter_deps="gpl avcodec"
3094 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3095 stereo3d_filter_deps="gpl"
3096 subtitles_filter_deps="avformat avcodec libass"
3097 super2xsai_filter_deps="gpl"
3098 pixfmts_super2xsai_test_deps="super2xsai_filter"
3099 tinterlace_filter_deps="gpl"
3100 tinterlace_merge_test_deps="tinterlace_filter"
3101 tinterlace_pad_test_deps="tinterlace_filter"
3102 uspp_filter_deps="gpl avcodec"
3103 vaguedenoiser_filter_deps="gpl"
3104 vidstabdetect_filter_deps="libvidstab"
3105 vidstabtransform_filter_deps="libvidstab"
3106 zmq_filter_deps="libzmq"
3107 zoompan_filter_deps="swscale"
3108 zscale_filter_deps="libzimg"
3109 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3110
3111 # examples
3112 avio_dir_cmd_deps="avformat avutil"
3113 avio_reading_deps="avformat avcodec avutil"
3114 decoding_encoding_example_deps="avcodec avformat avutil"
3115 demuxing_decoding_example_deps="avcodec avformat avutil"
3116 extract_mvs_example_deps="avcodec avformat avutil"
3117 filter_audio_example_deps="avfilter avutil"
3118 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3119 filtering_video_example_deps="avfilter avcodec avformat avutil"
3120 http_multiclient_example_deps="avformat avutil fork"
3121 metadata_example_deps="avformat avutil"
3122 muxing_example_deps="avcodec avformat avutil swscale"
3123 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
3124 remuxing_example_deps="avcodec avformat avutil"
3125 resampling_audio_example_deps="avutil swresample"
3126 scaling_video_example_deps="avutil swscale"
3127 transcode_aac_example_deps="avcodec avformat swresample"
3128 transcoding_example_deps="avfilter avcodec avformat avutil"
3129
3130 # libraries, in linking order
3131 avcodec_deps="avutil"
3132 avdevice_deps="avformat avcodec avutil"
3133 avfilter_deps="avutil"
3134 avformat_deps="avcodec avutil"
3135 avresample_deps="avutil"
3136 postproc_deps="avutil gpl"
3137 swresample_deps="avutil"
3138 swscale_deps="avutil"
3139
3140 # programs
3141 ffmpeg_deps="avcodec avfilter avformat swresample"
3142 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3143                null_filter
3144                setpts_filter trim_filter"
3145 ffplay_deps="avcodec avformat swscale swresample sdl2"
3146 ffplay_libs='$sdl2_libs'
3147 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3148 ffprobe_deps="avcodec avformat"
3149 ffserver_deps="avformat fork sarestart"
3150 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3151
3152 # documentation
3153 podpages_deps="perl"
3154 manpages_deps="perl pod2man"
3155 htmlpages_deps="perl"
3156 htmlpages_deps_any="makeinfo_html texi2html"
3157 txtpages_deps="perl makeinfo"
3158 doc_deps_any="manpages htmlpages podpages txtpages"
3159
3160 # default parameters
3161
3162 logfile="config.log"
3163
3164 # installation paths
3165 prefix_default="/usr/local"
3166 bindir_default='${prefix}/bin'
3167 datadir_default='${prefix}/share/ffmpeg'
3168 docdir_default='${prefix}/share/doc/ffmpeg'
3169 incdir_default='${prefix}/include'
3170 libdir_default='${prefix}/lib'
3171 mandir_default='${prefix}/share/man'
3172
3173 # toolchain
3174 ar_default="ar"
3175 cc_default="gcc"
3176 cxx_default="g++"
3177 host_cc_default="gcc"
3178 cp_f="cp -f"
3179 doxygen_default="doxygen"
3180 install="install"
3181 ln_s_default="ln -s -f"
3182 nm_default="nm -g"
3183 objformat="elf"
3184 pkg_config_default=pkg-config
3185 ranlib_default="ranlib"
3186 strip_default="strip"
3187 version_script='--version-script'
3188 yasmexe_default="yasm"
3189 windres_default="windres"
3190
3191 # OS
3192 target_os_default=$(tolower $(uname -s))
3193 host_os=$target_os_default
3194
3195 # machine
3196 if test "$target_os_default" = aix; then
3197     arch_default=$(uname -p)
3198     strip_default="strip -X32_64"
3199 else
3200     arch_default=$(uname -m)
3201 fi
3202 cpu="generic"
3203 intrinsics="none"
3204
3205 # configurable options
3206 enable $PROGRAM_LIST
3207 enable $DOCUMENT_LIST
3208 enable $EXAMPLE_LIST
3209 enable $(filter_out avresample $LIBRARY_LIST)
3210 enable stripping
3211
3212 enable asm
3213 enable debug
3214 enable doc
3215 enable faan faandct faanidct
3216 enable optimizations
3217 enable runtime_cpudetect
3218 enable safe_bitstream_reader
3219 enable static
3220 enable swscale_alpha
3221 enable valgrind_backtrace
3222
3223 sws_max_filter_size_default=256
3224 set_default sws_max_filter_size
3225
3226 # Enable platform codecs by default.
3227 enable audiotoolbox
3228
3229 # Enable hwaccels by default.
3230 enable d3d11va dxva2 vaapi vda vdpau videotoolbox_hwaccel xvmc
3231 enable xlib
3232
3233 enable cuda cuvid nvenc vda_framework videotoolbox videotoolbox_encoder
3234
3235 # build settings
3236 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3237 LIBPREF="lib"
3238 LIBSUF=".a"
3239 FULLNAME='$(NAME)$(BUILDSUF)'
3240 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3241 SLIBPREF="lib"
3242 SLIBSUF=".so"
3243 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3244 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3245 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3246 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3247 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3248 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3249 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3250
3251 asflags_filter=echo
3252 cflags_filter=echo
3253 ldflags_filter=echo
3254
3255 AS_C='-c'
3256 AS_O='-o $@'
3257 CC_C='-c'
3258 CC_E='-E -o $@'
3259 CC_O='-o $@'
3260 CXX_C='-c'
3261 CXX_O='-o $@'
3262 OBJCC_C='-c'
3263 OBJCC_E='-E -o $@'
3264 OBJCC_O='-o $@'
3265 LD_O='-o $@'
3266 LD_LIB='-l%'
3267 LD_PATH='-L'
3268 HOSTCC_C='-c'
3269 HOSTCC_E='-E -o $@'
3270 HOSTCC_O='-o $@'
3271 HOSTLD_O='-o $@'
3272
3273 host_libs='-lm'
3274 host_cflags_filter=echo
3275 host_ldflags_filter=echo
3276
3277 target_path='$(CURDIR)'
3278
3279 # since the object filename is not given with the -MM flag, the compiler
3280 # is only able to print the basename, and we must add the path ourselves
3281 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3282 DEPFLAGS='-MM'
3283
3284 # find source path
3285 if test -f configure; then
3286     source_path=.
3287 else
3288     source_path=$(cd $(dirname "$0"); pwd)
3289     case "$source_path" in
3290         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3291     esac
3292     test -e "$source_path/config.h" &&
3293         die "Out of tree builds are impossible with config.h in source dir."
3294 fi
3295
3296 for v in "$@"; do
3297     r=${v#*=}
3298     l=${v%"$r"}
3299     r=$(sh_quote "$r")
3300     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3301 done
3302
3303 find_things(){
3304     thing=$1
3305     pattern=$2
3306     file=$source_path/$3
3307     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3308 }
3309
3310 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3311 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3312 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3313 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3314 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3315 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3316 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3317 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3318 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3319
3320 find_things_extern(){
3321     thing=$1
3322     pattern=$2
3323     file=$source_path/$3
3324     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3325 }
3326
3327 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3328 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3329
3330 ALL_COMPONENTS="
3331     $BSF_LIST
3332     $DECODER_LIST
3333     $DEMUXER_LIST
3334     $ENCODER_LIST
3335     $FILTER_LIST
3336     $HWACCEL_LIST
3337     $INDEV_LIST
3338     $MUXER_LIST
3339     $OUTDEV_LIST
3340     $PARSER_LIST
3341     $PROTOCOL_LIST
3342 "
3343
3344 for n in $COMPONENT_LIST; do
3345     v=$(toupper ${n%s})_LIST
3346     eval enable \$$v
3347     eval ${n}_if_any="\$$v"
3348 done
3349
3350 enable $ARCH_EXT_LIST
3351
3352 die_unknown(){
3353     echo "Unknown option \"$1\"."
3354     echo "See $0 --help for available options."
3355     exit 1
3356 }
3357
3358 print_in_columns() {
3359     cols=$(expr $ncols / 24)
3360     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3361 }
3362
3363 show_list() {
3364     suffix=_$1
3365     shift
3366     echo $* | sed s/$suffix//g | print_in_columns
3367     exit 0
3368 }
3369
3370 rand_list(){
3371     IFS=', '
3372     set -- $*
3373     unset IFS
3374     for thing; do
3375         comp=${thing%:*}
3376         prob=${thing#$comp}
3377         prob=${prob#:}
3378         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3379         echo "prob ${prob:-0.5}"
3380         printf '%s\n' $comp
3381     done
3382 }
3383
3384 do_random(){
3385     action=$1
3386     shift
3387     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3388     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3389 }
3390
3391 for opt do
3392     optval="${opt#*=}"
3393     case "$opt" in
3394         --extra-ldflags=*)
3395             add_ldflags $optval
3396         ;;
3397         --extra-ldexeflags=*)
3398             add_ldexeflags $optval
3399         ;;
3400         --extra-ldlibflags=*)
3401             add_ldlibflags $optval
3402         ;;
3403         --extra-libs=*)
3404             add_extralibs $optval
3405         ;;
3406         --disable-devices)
3407             disable $INDEV_LIST $OUTDEV_LIST
3408         ;;
3409         --enable-debug=*)
3410             debuglevel="$optval"
3411         ;;
3412         --disable-programs)
3413             disable $PROGRAM_LIST
3414         ;;
3415         --disable-everything)
3416             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3417         ;;
3418         --disable-all)
3419             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3420             disable $LIBRARY_LIST $PROGRAM_LIST doc
3421             enable avutil
3422         ;;
3423         --enable-random|--disable-random)
3424             action=${opt%%-random}
3425             do_random ${action#--} $COMPONENT_LIST
3426         ;;
3427         --enable-random=*|--disable-random=*)
3428             action=${opt%%-random=*}
3429             do_random ${action#--} $optval
3430         ;;
3431         --enable-*=*|--disable-*=*)
3432             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3433             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3434             eval list=\$$(toupper $thing)_LIST
3435             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3436             list=$(filter "$name" $list)
3437             [ "$list" = "" ] && warn "Option $opt did not match anything"
3438             $action $list
3439         ;;
3440         --enable-?*|--disable-?*)
3441             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3442             if is_in $option $COMPONENT_LIST; then
3443                 test $action = disable && action=unset
3444                 eval $action \$$(toupper ${option%s})_LIST
3445             elif is_in $option $CMDLINE_SELECT; then
3446                 $action $option
3447             else
3448                 die_unknown $opt
3449             fi
3450         ;;
3451         --list-*)
3452             NAME="${opt#--list-}"
3453             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3454             NAME=${NAME%s}
3455             eval show_list $NAME \$$(toupper $NAME)_LIST
3456         ;;
3457         --help|-h) show_help
3458         ;;
3459         --fatal-warnings) enable fatal_warnings
3460         ;;
3461         *)
3462             optname="${opt%%=*}"
3463             optname="${optname#--}"
3464             optname=$(echo "$optname" | sed 's/-/_/g')
3465             if is_in $optname $CMDLINE_SET; then
3466                 eval $optname='$optval'
3467             elif is_in $optname $CMDLINE_APPEND; then
3468                 append $optname "$optval"
3469             else
3470                 die_unknown $opt
3471             fi
3472         ;;
3473     esac
3474 done
3475
3476 for e in $env; do
3477     eval "export $e"
3478 done
3479
3480 disabled logging && logfile=/dev/null
3481
3482 # Disable all the library-specific components if the library itself
3483 # is disabled, see AVCODEC_LIST and following _LIST variables.
3484
3485 disable_components(){
3486     disabled ${1} && disable $(
3487         eval components="\$$(toupper ${1})_COMPONENTS"
3488         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3489     )
3490 }
3491
3492 map 'disable_components $v' $LIBRARY_LIST
3493
3494 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3495 set >> $logfile
3496
3497 test -n "$valgrind" && toolchain="valgrind-memcheck"
3498
3499 case "$toolchain" in
3500     *-asan)
3501         cc_default="${toolchain%-asan}"
3502         add_cflags  -fsanitize=address
3503         add_ldflags -fsanitize=address
3504     ;;
3505     *-msan)
3506         cc_default="${toolchain%-msan}"
3507         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3508         add_ldflags -fsanitize=memory
3509     ;;
3510     *-tsan)
3511         cc_default="${toolchain%-tsan}"
3512         add_cflags  -fsanitize=thread -pie
3513         add_ldflags -fsanitize=thread -pie
3514         case "$toolchain" in
3515             gcc-tsan)
3516                 add_cflags  -fPIC
3517                 add_ldflags -fPIC
3518                 ;;
3519         esac
3520     ;;
3521     *-usan)
3522         cc_default="${toolchain%-usan}"
3523         add_cflags  -fsanitize=undefined
3524         add_ldflags -fsanitize=undefined
3525     ;;
3526     valgrind-*)
3527         target_exec_default="valgrind"
3528         case "$toolchain" in
3529             valgrind-massif)
3530                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3531                 ;;
3532             valgrind-memcheck)
3533                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3534                 ;;
3535         esac
3536     ;;
3537     msvc)
3538         # Check whether the current MSVC version needs the C99 converter.
3539         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3540         # support enough of C99 to build ffmpeg. Default to the new
3541         # behaviour if the regexp was unable to match anything, since this
3542         # successfully parses the version number of existing supported
3543         # versions that require the converter (MSVC 2010 and 2012).
3544         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3545         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3546             cc_default="cl"
3547         else
3548             cc_default="c99wrap cl"
3549         fi
3550         ld_default="$source_path/compat/windows/mslink"
3551         nm_default="dumpbin -symbols"
3552         ar_default="lib"
3553         case "$arch" in
3554         arm*)
3555             as_default="armasm"
3556             ;;
3557         esac
3558         target_os_default="win32"
3559         # Use a relative path for TMPDIR. This makes sure all the
3560         # ffconf temp files are written with a relative path, avoiding
3561         # issues with msys/win32 path conversion for MSVC parameters
3562         # such as -Fo<file> or -out:<file>.
3563         TMPDIR=.
3564     ;;
3565     icl)
3566         cc_default="icl"
3567         ld_default="xilink"
3568         nm_default="dumpbin -symbols"
3569         ar_default="xilib"
3570         target_os_default="win32"
3571         TMPDIR=.
3572     ;;
3573     gcov)
3574         add_cflags  -fprofile-arcs -ftest-coverage
3575         add_ldflags -fprofile-arcs -ftest-coverage
3576     ;;
3577     llvm-cov)
3578         add_cflags -fprofile-arcs -ftest-coverage
3579         add_ldflags --coverage
3580     ;;
3581     hardened)
3582         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3583         add_cflags   -fno-strict-overflow -fstack-protector-all
3584         add_ldflags  -Wl,-z,relro -Wl,-z,now
3585         add_cflags   -fPIE
3586         add_ldexeflags -fPIE -pie
3587     ;;
3588     ?*)
3589         die "Unknown toolchain $toolchain"
3590     ;;
3591 esac
3592
3593 test -n "$cross_prefix" && enable cross_compile
3594
3595 if enabled cross_compile; then
3596     test -n "$arch" && test -n "$target_os" ||
3597         die "Must specify target arch and OS when cross-compiling"
3598 fi
3599
3600 ar_default="${cross_prefix}${ar_default}"
3601 cc_default="${cross_prefix}${cc_default}"
3602 cxx_default="${cross_prefix}${cxx_default}"
3603 nm_default="${cross_prefix}${nm_default}"
3604 pkg_config_default="${cross_prefix}${pkg_config_default}"
3605 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3606     ranlib_default="${cross_prefix}${ranlib_default} -D"
3607 else
3608     ranlib_default="${cross_prefix}${ranlib_default}"
3609 fi
3610 strip_default="${cross_prefix}${strip_default}"
3611 windres_default="${cross_prefix}${windres_default}"
3612
3613 sysinclude_default="${sysroot}/usr/include"
3614
3615 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3616     target_exec target_os yasmexe
3617 enabled cross_compile || host_cc_default=$cc
3618 set_default host_cc
3619
3620 pkg_config_fail_message=""
3621 if ! $pkg_config --version >/dev/null 2>&1; then
3622     warn "$pkg_config not found, library detection may fail."
3623     pkg_config=false
3624 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3625     pkg_config_fail_message="
3626 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3627 fi
3628
3629 if test $doxygen != $doxygen_default && \
3630   ! $doxygen --version >/dev/null 2>&1; then
3631     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3632 fi
3633
3634 exesuf() {
3635     case $1 in
3636         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3637     esac
3638 }
3639
3640 EXESUF=$(exesuf $target_os)
3641 HOSTEXESUF=$(exesuf $host_os)
3642
3643 # set temporary file name
3644 : ${TMPDIR:=$TEMPDIR}
3645 : ${TMPDIR:=$TMP}
3646 : ${TMPDIR:=/tmp}
3647
3648 if [ -n "$tempprefix" ] ; then
3649     mktemp(){
3650         echo $tempprefix.${HOSTNAME}.${UID}
3651     }
3652 elif ! check_cmd mktemp -u XXXXXX; then
3653     # simple replacement for missing mktemp
3654     # NOT SAFE FOR GENERAL USE
3655     mktemp(){
3656         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3657     }
3658 fi
3659
3660 tmpfile(){
3661     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3662         (set -C; exec > $tmp) 2>/dev/null ||
3663         die "Unable to create temporary file in $TMPDIR."
3664     append TMPFILES $tmp
3665     eval $1=$tmp
3666 }
3667
3668 trap 'rm -f -- $TMPFILES' EXIT
3669
3670 tmpfile TMPASM .asm
3671 tmpfile TMPC   .c
3672 tmpfile TMPCPP .cpp
3673 tmpfile TMPE   $EXESUF
3674 tmpfile TMPH   .h
3675 tmpfile TMPM   .m
3676 tmpfile TMPO   .o
3677 tmpfile TMPS   .S
3678 tmpfile TMPSH  .sh
3679 tmpfile TMPV   .ver
3680
3681 unset -f mktemp
3682
3683 chmod +x $TMPE
3684
3685 # make sure we can execute files in $TMPDIR
3686 cat > $TMPSH 2>> $logfile <<EOF
3687 #! /bin/sh
3688 EOF
3689 chmod +x $TMPSH >> $logfile 2>&1
3690 if ! $TMPSH >> $logfile 2>&1; then
3691     cat <<EOF
3692 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3693 variable to another directory and make sure that it is not mounted noexec.
3694 EOF
3695     die "Sanity test failed."
3696 fi
3697
3698 armasm_flags(){
3699     for flag; do
3700         case $flag in
3701             # Filter out MSVC cl.exe options from cflags that shouldn't
3702             # be passed to gas-preprocessor
3703             -M[TD]*)                                            ;;
3704             *)                  echo $flag                      ;;
3705         esac
3706    done
3707 }
3708
3709 ccc_flags(){
3710     for flag; do
3711         case $flag in
3712             -std=c99)           echo -c99                       ;;
3713             -mcpu=*)            echo -arch ${flag#*=}           ;;
3714             -mieee)             echo -ieee                      ;;
3715             -O*|-fast)          echo $flag                      ;;
3716             -fno-math-errno)    echo -assume nomath_errno       ;;
3717             -g)                 echo -g3                        ;;
3718             -Wall)              echo -msg_enable level2         ;;
3719             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3720             -Wl,*)              echo $flag                      ;;
3721             -f*|-W*)                                            ;;
3722             *)                  echo $flag                      ;;
3723         esac
3724    done
3725 }
3726
3727 cparser_flags(){
3728     for flag; do
3729         case $flag in
3730             -Wno-switch)             echo -Wno-switch-enum ;;
3731             -Wno-format-zero-length) ;;
3732             -Wdisabled-optimization) ;;
3733             -Wno-pointer-sign)       echo -Wno-other ;;
3734             *)                       echo $flag ;;
3735         esac
3736     done
3737 }
3738
3739 msvc_common_flags(){
3740     for flag; do
3741         case $flag in
3742             # In addition to specifying certain flags under the compiler
3743             # specific filters, they must be specified here as well or else the
3744             # generic catch all at the bottom will print the original flag.
3745             -Wall)                ;;
3746             -std=c99)             ;;
3747             # Common flags
3748             -fomit-frame-pointer) ;;
3749             -g)                   echo -Z7 ;;
3750             -fno-math-errno)      ;;
3751             -fno-common)          ;;
3752             -fno-signed-zeros)    ;;
3753             -fPIC)                ;;
3754             -mthumb)              ;;
3755             -march=*)             ;;
3756             -lz)                  echo zlib.lib ;;
3757             -lavifil32)           echo vfw32.lib ;;
3758             -lavicap32)           echo vfw32.lib user32.lib ;;
3759             -lx264)               echo libx264.lib ;;
3760             -l*)                  echo ${flag#-l}.lib ;;
3761             -LARGEADDRESSAWARE)   echo $flag ;;
3762             -L*)                  echo -libpath:${flag#-L} ;;
3763             *)                    echo $flag ;;
3764         esac
3765     done
3766 }
3767
3768 msvc_flags(){
3769     msvc_common_flags "$@"
3770     for flag; do
3771         case $flag in
3772             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3773                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3774                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3775                                        -wd4307 \
3776                                        -wd4273 -wd4554 -wd4701 ;;
3777         esac
3778     done
3779 }
3780
3781 icl_flags(){
3782     msvc_common_flags "$@"
3783     for flag; do
3784         case $flag in
3785             # Despite what Intel's documentation says -Wall, which is supported
3786             # on Windows, does enable remarks so disable them here.
3787             -Wall)                echo $flag -Qdiag-disable:remark ;;
3788             -std=c99)             echo -Qstd=c99 ;;
3789             -flto)                echo -ipo ;;
3790         esac
3791     done
3792 }
3793
3794 icc_flags(){
3795     for flag; do
3796         case $flag in
3797             -flto)                echo -ipo ;;
3798             *)                    echo $flag ;;
3799         esac
3800     done
3801 }
3802
3803 pgi_flags(){
3804     for flag; do
3805         case $flag in
3806             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3807             -fomit-frame-pointer) echo -Mnoframe ;;
3808             -g)                   echo -gopt ;;
3809             *)                    echo $flag ;;
3810         esac
3811     done
3812 }
3813
3814 suncc_flags(){
3815     for flag; do
3816         case $flag in
3817             -march=*|-mcpu=*)
3818                 case "${flag#*=}" in
3819                     native)                   echo -xtarget=native       ;;
3820                     v9|niagara)               echo -xarch=sparc          ;;
3821                     ultrasparc)               echo -xarch=sparcvis       ;;
3822                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3823                     i586|pentium)             echo -xchip=pentium        ;;
3824                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3825                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3826                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3827                     pentium4*)          echo -xtarget=pentium4           ;;
3828                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3829                     *-sse3)             echo -xarch=sse3                 ;;
3830                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3831                     bonnell)                   echo -xarch=ssse3         ;;
3832                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3833                     westmere)                  echo -xtarget=westmere    ;;
3834                     silvermont)                echo -xarch=sse4_2        ;;
3835                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3836                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
3837                                                echo -xarch=avx           ;;
3838                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3839                     btver1)                    echo -xarch=amdsse4a      ;;
3840                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
3841                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3842                     k8|opteron|athlon64|athlon-fx)
3843                                                echo -xarch=sse2a         ;;
3844                     athlon*)                   echo -xarch=pentium_proa  ;;
3845                 esac
3846                 ;;
3847             -std=c99)             echo -xc99              ;;
3848             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3849             -fPIC)                echo -KPIC -xcode=pic32 ;;
3850             -W*,*)                echo $flag              ;;
3851             -f*-*|-W*|-mimpure-text)                      ;;
3852             -shared)              echo -G                 ;;
3853             *)                    echo $flag              ;;
3854         esac
3855     done
3856 }
3857
3858 tms470_flags(){
3859     for flag; do
3860         case $flag in
3861             -march=*|-mcpu=*)
3862                 case "${flag#*=}" in
3863                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3864                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3865                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3866                     armv6*|arm11*)          echo -mv=6   ;;
3867                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3868                                             echo -mv=5e  ;;
3869                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3870                 esac
3871                 ;;
3872             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3873             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3874             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3875             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3876             -msoft-float)   echo --float_support=vfplib       ;;
3877             -O[0-3]|-mf=*)  echo $flag                        ;;
3878             -g)             echo -g -mn                       ;;
3879             -pds=*)         echo $flag                        ;;
3880             -D*|-I*)        echo $flag                        ;;
3881             --gcc|--abi=*)  echo $flag                        ;;
3882             -me)            echo $flag                        ;;
3883         esac
3884     done
3885 }
3886
3887 probe_cc(){
3888     pfx=$1
3889     _cc=$2
3890     first=$3
3891
3892     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3893     unset _ld_o _ldflags _ld_lib _ld_path
3894     unset _depflags _DEPCMD _DEPFLAGS
3895     _flags_filter=echo
3896
3897     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3898         true # no-op to avoid reading stdin in following checks
3899     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3900         _type=llvm_gcc
3901         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3902         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3903         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3904         _cflags_speed='-O3'
3905         _cflags_size='-Os'
3906     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3907         _type=gcc
3908         gcc_version=$($_cc --version | head -n1)
3909         gcc_basever=$($_cc -dumpversion)
3910         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3911         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3912         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3913         case $gcc_basever in
3914             2) ;;
3915             2.*) ;;
3916             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
3917         esac
3918         if [ "$first" = true ]; then
3919             case $gcc_basever in
3920                 4.2*)
3921                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
3922             esac
3923         fi
3924         _cflags_speed='-O3'
3925         _cflags_size='-Os'
3926     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3927         _type=icc
3928         _ident=$($_cc --version | head -n1)
3929         _depflags='-MMD'
3930         _cflags_speed='-O3'
3931         _cflags_size='-Os'
3932         _cflags_noopt='-O1'
3933         _flags_filter=icc_flags
3934     elif $_cc -v 2>&1 | grep -q xlc; then
3935         _type=xlc
3936         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3937         _cflags_speed='-O5'
3938         _cflags_size='-O5 -qcompact'
3939     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3940         _type=ccc
3941         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3942         _DEPFLAGS='-M'
3943         _cflags_speed='-fast'
3944         _cflags_size='-O1'
3945         _flags_filter=ccc_flags
3946     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3947         test -d "$sysroot" || die "No valid sysroot specified."
3948         _type=armcc
3949         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3950         armcc_conf="$PWD/armcc.conf"
3951         $_cc --arm_linux_configure                 \
3952              --arm_linux_config_file="$armcc_conf" \
3953              --configure_sysroot="$sysroot"        \
3954              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3955              die "Error creating armcc configuration file."
3956         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3957         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3958         as_default="${cross_prefix}gcc"
3959         _depflags='-MMD'
3960         _cflags_speed='-O3'
3961         _cflags_size='-Os'
3962     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3963         _type=tms470
3964         _ident=$($_cc -version | head -n1 | tr -s ' ')
3965         _flags='--gcc --abi=eabi -me'
3966         _cc_e='-ppl -fe=$@'
3967         _cc_o='-fe=$@'
3968         _depflags='-ppa -ppd=$(@:.o=.d)'
3969         _cflags_speed='-O3 -mf=5'
3970         _cflags_size='-O3 -mf=2'
3971         _flags_filter=tms470_flags
3972     elif $_cc -v 2>&1 | grep -q clang; then
3973         _type=clang
3974         _ident=$($_cc --version 2>/dev/null | head -n1)
3975         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3976         _cflags_speed='-O3'
3977         _cflags_size='-Os'
3978     elif $_cc -V 2>&1 | grep -q Sun; then
3979         _type=suncc
3980         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3981         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3982         _DEPFLAGS='-xM1 -xc99'
3983         _ldflags='-std=c99'
3984         _cflags_speed='-O5'
3985         _cflags_size='-O5 -xspace'
3986         _flags_filter=suncc_flags
3987     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3988         _type=pathscale
3989         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3990         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3991         _cflags_speed='-O2'
3992         _cflags_size='-Os'
3993         _flags_filter='filter_out -Wdisabled-optimization'
3994     elif $_cc -v 2>&1 | grep -q Open64; then
3995         _type=open64
3996         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3997         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3998         _cflags_speed='-O2'
3999         _cflags_size='-Os'
4000         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4001     elif $_cc -V 2>&1 | grep -q Portland; then
4002         _type=pgi
4003         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
4004         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
4005         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
4006         _cflags_size="-O2 -Munroll=c:1 $opt_common"
4007         _cflags_noopt="-O"
4008         _flags_filter=pgi_flags
4009     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4010         _type=armasm
4011         _ident=$($_cc | head -n1)
4012         # 4509: "This form of conditional instruction is deprecated"
4013         _flags="-nologo -ignore 4509"
4014         _flags_filter=armasm_flags
4015     elif $_cc 2>&1 | grep -q Intel; then
4016         _type=icl
4017         _ident=$($_cc 2>&1 | head -n1)
4018         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4019         # Not only is O3 broken on 13.x+ but it is slower on all previous
4020         # versions (tested) as well.
4021         _cflags_speed="-O2"
4022         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4023         if $_cc 2>&1 | grep -q Linker; then
4024             _ld_o='-out:$@'
4025         else
4026             _ld_o='-Fe$@'
4027         fi
4028         _cc_o='-Fo$@'
4029         _cc_e='-P'
4030         _flags_filter=icl_flags
4031         _ld_lib='lib%.a'
4032         _ld_path='-libpath:'
4033         # -Qdiag-error to make icl error when seeing certain unknown arguments
4034         _flags='-nologo -Qdiag-error:4044,10157'
4035         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4036         # with MSVC which enables it by default.
4037         _cflags='-D_USE_MATH_DEFINES -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4038         disable stripping
4039     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4040         _type=msvc
4041         _ident=$($_cc 2>&1 | head -n1)
4042         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4043         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4044         _cflags_speed="-O2"
4045         _cflags_size="-O1"
4046         if $_cc -nologo- 2>&1 | grep -q Linker; then
4047             _ld_o='-out:$@'
4048         else
4049             _ld_o='-Fe$@'
4050         fi
4051         _cc_o='-Fo$@'
4052         _cc_e='-P -Fi$@'
4053         _flags_filter=msvc_flags
4054         _ld_lib='lib%.a'
4055         _ld_path='-libpath:'
4056         _flags='-nologo'
4057         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS'
4058         disable stripping
4059     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4060         _type=cparser
4061         _ident=$($_cc --version | head -n1)
4062         _depflags='-MMD'
4063         _cflags_speed='-O4'
4064         _cflags_size='-O2'
4065         _flags_filter=cparser_flags
4066     fi
4067
4068     eval ${pfx}_type=\$_type
4069     eval ${pfx}_ident=\$_ident
4070 }
4071
4072 set_ccvars(){
4073     eval ${1}_C=\${_cc_c-\${${1}_C}}
4074     eval ${1}_E=\${_cc_e-\${${1}_E}}
4075     eval ${1}_O=\${_cc_o-\${${1}_O}}
4076
4077     if [ -n "$_depflags" ]; then
4078         eval ${1}_DEPFLAGS=\$_depflags
4079     else
4080         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4081         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4082         eval DEP${1}FLAGS=\$_flags
4083     fi
4084 }
4085
4086 probe_cc cc "$cc" "true"
4087 cflags_filter=$_flags_filter
4088 cflags_speed=$_cflags_speed
4089 cflags_size=$_cflags_size
4090 cflags_noopt=$_cflags_noopt
4091 add_cflags $_flags $_cflags
4092 cc_ldflags=$_ldflags
4093 set_ccvars CC
4094
4095 probe_cc hostcc "$host_cc"
4096 host_cflags_filter=$_flags_filter
4097 add_host_cflags  $_flags $_cflags
4098 set_ccvars HOSTCC
4099
4100 test -n "$cc_type" && enable $cc_type ||
4101     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4102
4103 : ${as_default:=$cc}
4104 : ${objcc_default:=$cc}
4105 : ${dep_cc_default:=$cc}
4106 : ${ld_default:=$cc}
4107 : ${host_ld_default:=$host_cc}
4108 set_default ar as objcc dep_cc ld ln_s host_ld windres
4109
4110 probe_cc as "$as"
4111 asflags_filter=$_flags_filter
4112 add_asflags $_flags $_cflags
4113 set_ccvars AS
4114
4115 probe_cc objcc "$objcc"
4116 objcflags_filter=$_flags_filter
4117 add_objcflags $_flags $_cflags
4118 set_ccvars OBJC
4119
4120 probe_cc ld "$ld"
4121 ldflags_filter=$_flags_filter
4122 add_ldflags $_flags $_ldflags
4123 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4124 LD_O=${_ld_o-$LD_O}
4125 LD_LIB=${_ld_lib-$LD_LIB}
4126 LD_PATH=${_ld_path-$LD_PATH}
4127
4128 probe_cc hostld "$host_ld"
4129 host_ldflags_filter=$_flags_filter
4130 add_host_ldflags $_flags $_ldflags
4131 HOSTLD_O=${_ld_o-$HOSTLD_O}
4132
4133 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4134     probe_cc depcc "$dep_cc"
4135     CCDEP=${_DEPCMD:-$DEPCMD}
4136     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4137     DEPCCFLAGS=$_flags
4138 fi
4139
4140 if $ar 2>&1 | grep -q Microsoft; then
4141     arflags="-nologo"
4142     ar_o='-out:$@'
4143 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
4144     arflags="rq"
4145     ar_o='$@'
4146 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
4147     arflags='-Xany -r -c'
4148     ar_o='$@'
4149 elif $ar 2>&1 | grep -q "\[D\] "; then
4150     arflags="rcD"
4151     ar_o='$@'
4152 else
4153     arflags="rc"
4154     ar_o='$@'
4155 fi
4156
4157 add_cflags $extra_cflags
4158 add_cxxflags $extra_cxxflags
4159 add_objcflags $extra_objcflags
4160 add_asflags $extra_cflags
4161
4162 if test -n "$sysroot"; then
4163     case "$cc_type" in
4164         gcc|llvm_gcc|clang)
4165             add_cppflags --sysroot="$sysroot"
4166             add_ldflags --sysroot="$sysroot"
4167 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
4168             add_cppflags -isysroot "$sysroot"
4169             add_ldflags -isysroot "$sysroot"
4170         ;;
4171         tms470)
4172             add_cppflags -I"$sysinclude"
4173             add_ldflags  --sysroot="$sysroot"
4174         ;;
4175     esac
4176 fi
4177
4178 if test "$cpu" = host; then
4179     enabled cross_compile &&
4180         die "--cpu=host makes no sense when cross-compiling."
4181
4182     case "$cc_type" in
4183         gcc|llvm_gcc)
4184             check_native(){
4185                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4186                 sed -n "/cc1.*$1=/{
4187                             s/.*$1=\\([^ ]*\\).*/\\1/
4188                             p
4189                             q
4190                         }" $TMPE
4191             }
4192             cpu=$(check_native -march || check_native -mcpu)
4193         ;;
4194         clang)
4195             check_native(){
4196                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4197                 sed -n "/cc1.*-target-cpu /{
4198                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4199                             p
4200                             q
4201                         }" $TMPE
4202             }
4203             cpu=$(check_native -march)
4204         ;;
4205     esac
4206
4207     test "${cpu:-host}" = host &&
4208         die "--cpu=host not supported with compiler $cc"
4209 fi
4210
4211 # Deal with common $arch aliases
4212 case "$arch" in
4213     aarch64|arm64)
4214         arch="aarch64"
4215     ;;
4216     arm*|iPad*|iPhone*)
4217         arch="arm"
4218     ;;
4219     mips*|IP*)
4220         case "$arch" in
4221         *el)
4222             add_cppflags -EL
4223             add_ldflags -EL
4224         ;;
4225         *eb)
4226             add_cppflags -EB
4227             add_ldflags -EB
4228         ;;
4229         esac
4230         arch="mips"
4231     ;;
4232     parisc*|hppa*)
4233         arch="parisc"
4234     ;;
4235     "Power Macintosh"|ppc*|powerpc*)
4236         arch="ppc"
4237     ;;
4238     s390|s390x)
4239         arch="s390"
4240     ;;
4241     sh4|sh)
4242         arch="sh4"
4243     ;;
4244     sun4*|sparc*)
4245         arch="sparc"
4246     ;;
4247     tilegx|tile-gx)
4248         arch="tilegx"
4249     ;;
4250     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4251         arch="x86"
4252     ;;
4253 esac
4254
4255 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4256 enable $arch
4257
4258 # Add processor-specific flags
4259 if enabled aarch64; then
4260
4261     case $cpu in
4262         armv*)
4263             cpuflags="-march=$cpu"
4264         ;;
4265         *)
4266             cpuflags="-mcpu=$cpu"
4267         ;;
4268     esac
4269
4270 elif enabled alpha; then
4271
4272     cpuflags="-mcpu=$cpu"
4273
4274 elif enabled arm; then
4275
4276     check_arm_arch() {
4277         check_cpp_condition stddef.h \
4278             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4279             $cpuflags
4280     }
4281
4282     probe_arm_arch() {
4283         if   check_arm_arch 4;        then echo armv4
4284         elif check_arm_arch 4T;       then echo armv4t
4285         elif check_arm_arch 5;        then echo armv5
4286         elif check_arm_arch 5E;       then echo armv5e
4287         elif check_arm_arch 5T;       then echo armv5t
4288         elif check_arm_arch 5TE;      then echo armv5te
4289         elif check_arm_arch 5TEJ;     then echo armv5te
4290         elif check_arm_arch 6;        then echo armv6
4291         elif check_arm_arch 6J;       then echo armv6j
4292         elif check_arm_arch 6K;       then echo armv6k
4293         elif check_arm_arch 6Z;       then echo armv6z
4294         elif check_arm_arch 6ZK;      then echo armv6zk
4295         elif check_arm_arch 6T2;      then echo armv6t2
4296         elif check_arm_arch 7;        then echo armv7
4297         elif check_arm_arch 7A  7_A;  then echo armv7-a
4298         elif check_arm_arch 7S;       then echo armv7-a
4299         elif check_arm_arch 7R  7_R;  then echo armv7-r
4300         elif check_arm_arch 7M  7_M;  then echo armv7-m
4301         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4302         elif check_arm_arch 8A  8_A;  then echo armv8-a
4303         fi
4304     }
4305
4306     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4307
4308     case $cpu in
4309         armv*)
4310             cpuflags="-march=$cpu"
4311             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4312         ;;
4313         *)
4314             cpuflags="-mcpu=$cpu"
4315             case $cpu in
4316                 cortex-a*)                               subarch=armv7a  ;;
4317                 cortex-r*)                               subarch=armv7r  ;;
4318                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4319                 arm11*)                                  subarch=armv6   ;;
4320                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4321                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4322                 *)                             subarch=$(probe_arm_arch) ;;
4323             esac
4324         ;;
4325     esac
4326
4327     case "$subarch" in
4328         armv5t*)    enable fast_clz                ;;
4329         armv[6-8]*)
4330             enable fast_clz
4331             disabled fast_unaligned || enable fast_unaligned
4332             ;;
4333     esac
4334
4335 elif enabled avr32; then
4336
4337     case $cpu in
4338         ap7[02]0[0-2])
4339             subarch="avr32_ap"
4340             cpuflags="-mpart=$cpu"
4341         ;;
4342         ap)
4343             subarch="avr32_ap"
4344             cpuflags="-march=$cpu"
4345         ;;
4346         uc3[ab]*)
4347             subarch="avr32_uc"
4348             cpuflags="-mcpu=$cpu"
4349         ;;
4350         uc)
4351             subarch="avr32_uc"
4352             cpuflags="-march=$cpu"
4353         ;;
4354     esac
4355
4356 elif enabled bfin; then
4357
4358     cpuflags="-mcpu=$cpu"
4359
4360 elif enabled mips; then
4361
4362     cpuflags="-march=$cpu"
4363
4364     if [ "$cpu" != "generic" ]; then
4365         disable mips32r2
4366         disable mips32r5
4367         disable mips64r2
4368         disable mips32r6
4369         disable mips64r6
4370         disable loongson2
4371         disable loongson3
4372
4373         case $cpu in
4374             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4375                 enable mips32r2
4376                 disable msa
4377             ;;
4378             p5600|i6400|p6600)
4379                 disable mipsdsp
4380                 disable mipsdspr2
4381             ;;
4382             loongson*)
4383                 enable loongson2
4384                 enable loongson3
4385                 enable local_aligned_8 local_aligned_16 local_aligned_32
4386                 enable simd_align_16
4387                 enable fast_64bit
4388                 enable fast_clz
4389                 enable fast_cmov
4390                 enable fast_unaligned
4391                 disable aligned_stack
4392                 disable mipsfpu
4393                 disable mipsdsp
4394                 disable mipsdspr2
4395                 case $cpu in
4396                     loongson3*)
4397                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4398                     ;;
4399                     loongson2e)
4400                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4401                     ;;
4402                     loongson2f)
4403                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4404                     ;;
4405                 esac
4406             ;;
4407             *)
4408                 # Unknown CPU. Disable everything.
4409                 warn "unknown CPU. Disabling all MIPS optimizations."
4410                 disable mipsfpu
4411                 disable mipsdsp
4412                 disable mipsdspr2
4413                 disable msa
4414                 disable mmi
4415             ;;
4416         esac
4417
4418         case $cpu in
4419             24kc)
4420                 disable mipsfpu
4421                 disable mipsdsp
4422                 disable mipsdspr2
4423             ;;
4424             24kf*)
4425                 disable mipsdsp
4426                 disable mipsdspr2
4427             ;;
4428             24kec|34kc|1004kc)
4429                 disable mipsfpu
4430                 disable mipsdspr2
4431             ;;
4432             24kef*|34kf*|1004kf*)
4433                 disable mipsdspr2
4434             ;;
4435             74kc)
4436                 disable mipsfpu
4437             ;;
4438             p5600)
4439                 enable mips32r5
4440                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4441             ;;
4442             i6400)
4443                 enable mips64r6
4444                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4445             ;;
4446             p6600)
4447                 enable mips64r6
4448                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4449             ;;
4450         esac
4451     else
4452         # We do not disable anything. Is up to the user to disable the unwanted features.
4453         warn 'generic cpu selected'
4454     fi
4455
4456 elif enabled ppc; then
4457
4458     disable ldbrx
4459
4460     case $(tolower $cpu) in
4461         601|ppc601|powerpc601)
4462             cpuflags="-mcpu=601"
4463             disable altivec
4464         ;;
4465         603*|ppc603*|powerpc603*)
4466             cpuflags="-mcpu=603"
4467             disable altivec
4468         ;;
4469         604*|ppc604*|powerpc604*)
4470             cpuflags="-mcpu=604"
4471             disable altivec
4472         ;;
4473         g3|75*|ppc75*|powerpc75*)
4474             cpuflags="-mcpu=750"
4475             disable altivec
4476         ;;
4477         g4|745*|ppc745*|powerpc745*)
4478             cpuflags="-mcpu=7450"
4479             disable vsx
4480         ;;
4481         74*|ppc74*|powerpc74*)
4482             cpuflags="-mcpu=7400"
4483             disable vsx
4484         ;;
4485         g5|970|ppc970|powerpc970)
4486             cpuflags="-mcpu=970"
4487             disable vsx
4488         ;;
4489         power[3-6]*)
4490             cpuflags="-mcpu=$cpu"
4491             disable vsx
4492         ;;
4493         power[7-8]*)
4494             cpuflags="-mcpu=$cpu"
4495         ;;
4496         cell)
4497             cpuflags="-mcpu=cell"
4498             enable ldbrx
4499             disable vsx
4500         ;;
4501         e500mc)
4502             cpuflags="-mcpu=e500mc"
4503             disable altivec
4504         ;;
4505         e500v2)
4506             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4507             disable altivec
4508             disable dcbzl
4509         ;;
4510         e500)
4511             cpuflags="-mcpu=8540 -mhard-float"
4512             disable altivec
4513             disable dcbzl
4514         ;;
4515     esac
4516
4517 elif enabled sparc; then
4518
4519     case $cpu in
4520         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4521             cpuflags="-mcpu=$cpu"
4522         ;;
4523         ultrasparc*|niagara[234])
4524             cpuflags="-mcpu=$cpu"
4525         ;;
4526     esac
4527
4528 elif enabled x86; then
4529
4530     case $cpu in
4531         i[345]86|pentium)
4532             cpuflags="-march=$cpu"
4533             disable i686
4534             disable mmx
4535         ;;
4536         # targets that do NOT support nopl and conditional mov (cmov)
4537         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4538             cpuflags="-march=$cpu"
4539             disable i686
4540         ;;
4541         # targets that do support nopl and conditional mov (cmov)
4542         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4543         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4544         |amdfam10|barcelona|b[dt]ver*|znver*)
4545             cpuflags="-march=$cpu"
4546             enable i686
4547             enable fast_cmov
4548         ;;
4549         # targets that do support conditional mov but on which it's slow
4550         pentium4|pentium4m|prescott|nocona)
4551             cpuflags="-march=$cpu"
4552             enable i686
4553             disable fast_cmov
4554         ;;
4555     esac
4556
4557 fi
4558
4559 if [ "$cpu" != generic ]; then
4560     add_cflags  $cpuflags
4561     add_asflags $cpuflags
4562     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4563 fi
4564
4565 # compiler sanity check
4566 check_exec <<EOF
4567 int main(void){ return 0; }
4568 EOF
4569 if test "$?" != 0; then
4570     echo "$cc is unable to create an executable file."
4571     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4572         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4573         echo "Only do this if you know what cross compiling means."
4574     fi
4575     die "C compiler test failed."
4576 fi
4577
4578 add_cppflags -D_ISOC99_SOURCE
4579 add_cxxflags -D__STDC_CONSTANT_MACROS
4580 add_cxxflags -std=c++98
4581 check_cflags -std=c99
4582 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4583 #include <stdlib.h>
4584 EOF
4585 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4586 #include <stdlib.h>
4587 EOF
4588
4589 add_host_cppflags -D_ISOC99_SOURCE
4590 check_host_cflags -std=c99
4591 check_host_cflags -Wall
4592 check_host_cflags -O3
4593
4594 check_64bit(){
4595     arch32=$1
4596     arch64=$2
4597     expr=$3
4598     check_code cc "" "int test[2*($expr) - 1]" &&
4599         subarch=$arch64 || subarch=$arch32
4600 }
4601
4602 case "$arch" in
4603     aarch64|alpha|ia64)
4604         spic=$shared
4605     ;;
4606     mips)
4607         check_64bit mips mips64 '_MIPS_SIM > 1'
4608         spic=$shared
4609     ;;
4610     parisc)
4611         check_64bit parisc parisc64 'sizeof(void *) > 4'
4612         spic=$shared
4613     ;;
4614     ppc)
4615         check_64bit ppc ppc64 'sizeof(void *) > 4'
4616         spic=$shared
4617     ;;
4618     s390)
4619         check_64bit s390 s390x 'sizeof(void *) > 4'
4620         spic=$shared
4621     ;;
4622     sparc)
4623         check_64bit sparc sparc64 'sizeof(void *) > 4'
4624         spic=$shared
4625     ;;
4626     x86)
4627         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4628         # Treat x32 as x64 for now. Note it also needs spic=$shared
4629         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4630             subarch=x86_64
4631         if test "$subarch" = "x86_64"; then
4632             spic=$shared
4633         fi
4634     ;;
4635     ppc)
4636         check_cc <<EOF && subarch="ppc64"
4637         int test[(int)sizeof(char*) - 7];
4638 EOF
4639     ;;
4640 esac
4641
4642 enable $subarch
4643 enabled spic && enable_weak pic
4644
4645 # OS specific
4646 case $target_os in
4647     aix)
4648         SHFLAGS=-shared
4649         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4650         enabled shared && add_ldflags -Wl,-brtl
4651         ;;
4652     android)
4653         disable symver
4654         enable section_data_rel_ro
4655         SLIB_INSTALL_NAME='$(SLIBNAME)'
4656         SLIB_INSTALL_LINKS=
4657         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4658         ;;
4659     haiku)
4660         prefix_default="/boot/common"
4661         network_extralibs="-lnetwork"
4662         host_libs=
4663         ;;
4664     sunos)
4665         SHFLAGS='-shared -Wl,-h,$$(@F)'
4666         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4667         network_extralibs="-lsocket -lnsl"
4668         add_cppflags -D__EXTENSIONS__
4669         # When using suncc to build, the Solaris linker will mark
4670         # an executable with each instruction set encountered by
4671         # the Solaris assembler.  As our libraries contain their own
4672         # guards for processor-specific code, instead suppress
4673         # generation of the HWCAPS ELF section on Solaris x86 only.
4674         enabled_all suncc x86 &&
4675             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4676             add_ldflags -Wl,-M,mapfile
4677         nm_default='nm -P -g'
4678         version_script='-M'
4679         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
4680         ;;
4681     netbsd)
4682         disable symver
4683         oss_indev_extralibs="-lossaudio"
4684         oss_outdev_extralibs="-lossaudio"
4685         enabled gcc || check_ldflags -Wl,-zmuldefs
4686         ;;
4687     openbsd|bitrig)
4688         disable symver
4689         SHFLAGS='-shared'
4690         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4691         SLIB_INSTALL_LINKS=
4692         oss_indev_extralibs="-lossaudio"
4693         oss_outdev_extralibs="-lossaudio"
4694         ;;
4695     dragonfly)
4696         disable symver
4697         ;;
4698     freebsd)
4699         ;;
4700     bsd/os)
4701         add_extralibs -lpoll -lgnugetopt
4702         strip="strip -d"
4703         ;;
4704     darwin)
4705         enabled ppc && add_asflags -force_cpusubtype_ALL
4706         install_name_dir_default='$(SHLIBDIR)'
4707         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4708         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4709         strip="${strip} -x"
4710         add_ldflags -Wl,-dynamic,-search_paths_first
4711         SLIBSUF=".dylib"
4712         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4713         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4714         objformat="macho"
4715         enabled x86_64 && objformat="macho64"
4716         enabled_any pic shared x86_64 ||
4717             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4718         check_header dispatch/dispatch.h &&
4719             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
4720         version_script='-exported_symbols_list'
4721         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
4722         ;;
4723     msys*)
4724         die "Native MSYS builds are discouraged, please use the MINGW environment."
4725         ;;
4726     mingw32*|mingw64*)
4727         if test $target_os = "mingw32ce"; then
4728             disable network
4729         else
4730             target_os=mingw32
4731         fi
4732         decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
4733         decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
4734         LIBTARGET=i386
4735         if enabled x86_64; then
4736             LIBTARGET="i386:x86-64"
4737         elif enabled arm; then
4738             LIBTARGET=arm-wince
4739         fi
4740         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4741         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4742         shlibdir_default="$bindir_default"
4743         SLIBPREF=""
4744         SLIBSUF=".dll"
4745         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4746         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4747         dlltool="${cross_prefix}dlltool"
4748         if check_cmd lib.exe -list; then
4749             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4750             if enabled x86_64; then
4751                 LIBTARGET=x64
4752             fi
4753         elif check_cmd $dlltool --version; then
4754             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4755         fi
4756         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4757         SLIB_INSTALL_LINKS=
4758         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4759         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4760         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--disable-auto-image-base'
4761         objformat="win32"
4762         ranlib=:
4763         enable dos_paths
4764         check_ldflags -Wl,--nxcompat,--dynamicbase
4765         # Lets work around some stupidity in binutils.
4766         # ld will strip relocations from executables even though we need them
4767         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4768         # however ld then forgets what the entry point should be (oops) so we
4769         # have to manually (re)set it.
4770         if enabled x86_32; then
4771             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
4772         elif enabled x86_64; then
4773             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
4774             check_ldflags -Wl,--high-entropy-va # binutils 2.25
4775             # Set image base >4GB for extra entropy with HEASLR
4776             add_ldexeflags -Wl,--image-base,0x140000000
4777             append SHFLAGS -Wl,--image-base,0x180000000
4778         fi
4779         ;;
4780     win32|win64)
4781         disable symver
4782         if enabled shared; then
4783             # Link to the import library instead of the normal static library
4784             # for shared libs.
4785             LD_LIB='%.lib'
4786             # Cannot build both shared and static libs with MSVC or icl.
4787             disable static
4788         fi
4789         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4790         shlibdir_default="$bindir_default"
4791         SLIBPREF=""
4792         SLIBSUF=".dll"
4793         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4794         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4795         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4796         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4797         SLIB_INSTALL_LINKS=
4798         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4799         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4800         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4801         objformat="win32"
4802         ranlib=:
4803         enable dos_paths
4804         ;;
4805     cygwin*)
4806         target_os=cygwin
4807         shlibdir_default="$bindir_default"
4808         SLIBPREF="cyg"
4809         SLIBSUF=".dll"
4810         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4811         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4812         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4813         SLIB_INSTALL_LINKS=
4814         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4815         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4816         objformat="win32"
4817         enable dos_paths
4818         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4819         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4820         ;;
4821     *-dos|freedos|opendos)
4822         network_extralibs="-lsocket"
4823         objformat="coff"
4824         enable dos_paths
4825         add_cppflags -U__STRICT_ANSI__
4826         ;;
4827     linux)
4828         enable dv1394
4829         enable section_data_rel_ro
4830         ;;
4831     irix*)
4832         target_os=irix
4833         ranlib="echo ignoring ranlib"
4834         ;;
4835     os/2*)
4836         strip="lxlite -CS"
4837         objformat="aout"
4838         add_cppflags -D_GNU_SOURCE
4839         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4840         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4841         LIBSUF="_s.a"
4842         SLIBPREF=""
4843         SLIBSUF=".dll"
4844         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4845         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4846         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
4847             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
4848             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
4849             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
4850             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
4851         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
4852             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
4853         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4854         SLIB_INSTALL_LINKS=
4855         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
4856         enable dos_paths
4857         enable_weak os2threads
4858         ;;
4859     gnu/kfreebsd)
4860         add_cppflags -D_BSD_SOURCE
4861         ;;
4862     gnu)
4863         ;;
4864     qnx)
4865         add_cppflags -D_QNX_SOURCE
4866         network_extralibs="-lsocket"
4867         ;;
4868     symbian)
4869         SLIBSUF=".dll"
4870         enable dos_paths
4871         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4872         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4873         add_ldflags -Wl,--target1-abs,--no-undefined \
4874                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4875                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4876         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4877                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4878                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4879         ;;
4880     osf1)
4881         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4882         ;;
4883     minix)
4884         ;;
4885     plan9)
4886         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4887                      -D_REENTRANT_SOURCE        \
4888                      -D_RESEARCH_SOURCE         \
4889                      -DFD_SETSIZE=96            \
4890                      -DHAVE_SOCK_OPTS
4891         add_compat strtod.o strtod=avpriv_strtod
4892         network_extralibs='-lbsd'
4893         exeobjs=compat/plan9/main.o
4894         disable ffserver
4895         cp_f='cp'
4896         ;;
4897     none)
4898         ;;
4899     *)
4900         die "Unknown OS '$target_os'."
4901         ;;
4902 esac
4903
4904 # test if creating links works
4905 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
4906 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
4907 mkdir "$link_dest"
4908 $ln_s "$link_dest" "$link_name"
4909 touch "$link_dest/test_file"
4910 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
4911     # create link to source path
4912     [ -e src ] && rm src
4913     $ln_s "$source_path" src
4914     source_link=src
4915 else
4916     # creating directory links doesn't work
4917     # fall back to using the full source path
4918     source_link="$source_path"
4919 fi
4920 # cleanup
4921 rm -r "$link_dest"
4922 rm -r "$link_name"
4923
4924 # determine libc flavour
4925
4926 probe_libc(){
4927     pfx=$1
4928     pfx_no_=${pfx%_}
4929     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4930     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4931         eval ${pfx}libc_type=uclibc
4932         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4933     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4934         eval ${pfx}libc_type=glibc
4935         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4936     # MinGW headers can be installed on Cygwin, so check for newlib first.
4937     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4938         eval ${pfx}libc_type=newlib
4939         add_${pfx}cppflags -U__STRICT_ANSI__
4940     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4941     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4942         eval ${pfx}libc_type=mingw64
4943         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
4944             add_compat msvcrt/snprintf.o
4945             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
4946         fi
4947         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4948         eval test \$${pfx_no_}cc_type = "gcc" &&
4949             add_${pfx}cppflags -D__printf__=__gnu_printf__
4950     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4951          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4952         eval ${pfx}libc_type=mingw32
4953         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4954             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4955             die "ERROR: MinGW32 runtime version must be >= 3.15."
4956         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4957         check_${pfx}cpp_condition _mingw.h "defined(_WIN32_WINNT) && _WIN32_WINNT >= 0x0502" ||
4958             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
4959         eval test \$${pfx_no_}cc_type = "gcc" &&
4960             add_${pfx}cppflags -D__printf__=__gnu_printf__
4961     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4962         eval ${pfx}libc_type=msvcrt
4963         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
4964             if [ "$pfx" = host_ ]; then
4965                 add_host_cppflags -Dsnprintf=_snprintf
4966             else
4967                 add_compat strtod.o strtod=avpriv_strtod
4968                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4969                                              _snprintf=avpriv_snprintf  \
4970                                              vsnprintf=avpriv_vsnprintf
4971             fi
4972         fi
4973         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4974         # 0x601 by default unless something else is set by the user.
4975         # This can easily lead to us detecting functions only present
4976         # in such new versions and producing binaries requiring windows 7.0.
4977         # Therefore explicitly set the default to XP unless the user has
4978         # set something else on the command line.
4979         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
4980         # family. For these cases, configure is free to use any functions
4981         # found in the SDK headers by default. (Alternatively, we could force
4982         # _WIN32_WINNT to 0x0602 in that case.)
4983         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4984             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
4985 #ifdef WINAPI_FAMILY
4986 #include <winapifamily.h>
4987 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
4988 #error not desktop
4989 #endif
4990 #endif
4991 EOF
4992     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4993         eval ${pfx}libc_type=klibc
4994     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4995         eval ${pfx}libc_type=bionic
4996     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4997         eval ${pfx}libc_type=solaris
4998         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4999     fi
5000     check_${pfx}cc <<EOF
5001 #include <time.h>
5002 void *v = localtime_r;
5003 EOF
5004 test "$?" != 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
5005 #include <time.h>
5006 void *v = localtime_r;
5007 EOF
5008
5009 }
5010
5011 probe_libc
5012 test -n "$libc_type" && enable libc_$libc_type
5013 probe_libc host_
5014 test -n "$host_libc_type" && enable host_libc_$host_libc_type
5015
5016 case $libc_type in
5017     bionic)
5018         add_compat strtod.o strtod=avpriv_strtod
5019         ;;
5020 esac
5021
5022 # hacks for compiler/libc/os combinations
5023
5024 if enabled_all tms470 libc_glibc; then
5025     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
5026     add_cppflags -D__USER_LABEL_PREFIX__=
5027     add_cppflags -D__builtin_memset=memset
5028     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
5029     add_cflags   -pds=48    # incompatible redefinition of macro
5030 fi
5031
5032 if enabled_all ccc libc_glibc; then
5033     add_ldflags -Wl,-z,now  # calls to libots crash without this
5034 fi
5035
5036 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5037     add_cppflags '-I\$(SRC_PATH)/compat/float'
5038
5039 esc(){
5040     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
5041 }
5042
5043 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
5044
5045 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5046
5047 set_default libdir
5048 : ${shlibdir_default:="$libdir"}
5049 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5050
5051 set_default $PATHS_LIST
5052 set_default nm
5053
5054 # we need to build at least one lib type
5055 if ! enabled_any static shared; then
5056     cat <<EOF
5057 At least one library type must be built.
5058 Specify --enable-static to build the static libraries or --enable-shared to
5059 build the shared libraries as well. To only build the shared libraries specify
5060 --disable-static in addition to --enable-shared.
5061 EOF
5062     exit 1
5063 fi
5064
5065 die_license_disabled() {
5066     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
5067 }
5068
5069 die_license_disabled_gpl() {
5070     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
5071 }
5072
5073 die_license_disabled gpl frei0r
5074 die_license_disabled gpl libcdio
5075 die_license_disabled gpl librubberband
5076 die_license_disabled gpl libsmbclient
5077 die_license_disabled gpl libvidstab
5078 die_license_disabled gpl libx264
5079 die_license_disabled gpl libx265
5080 die_license_disabled gpl libxavs
5081 die_license_disabled gpl libxvid
5082 die_license_disabled gpl x11grab
5083
5084 die_license_disabled nonfree libnpp
5085 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
5086 enabled gpl && die_license_disabled_gpl nonfree openssl
5087
5088 die_license_disabled version3 gmp
5089 die_license_disabled version3 libopencore_amrnb
5090 die_license_disabled version3 libopencore_amrwb
5091 die_license_disabled version3 libsmbclient
5092 die_license_disabled version3 libvo_amrwbenc
5093
5094 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
5095
5096 disabled optimizations || check_cflags -fomit-frame-pointer
5097
5098 enable_weak_pic() {
5099     disabled pic && return
5100     enable pic
5101     add_cppflags -DPIC
5102     case "$target_os" in
5103     mingw*|cygwin*)
5104         ;;
5105     *)
5106         add_cflags -fPIC
5107         ;;
5108     esac
5109     add_asflags  -fPIC
5110 }
5111
5112 enabled pic && enable_weak_pic
5113
5114 check_cc <<EOF || die "Symbol mangling check failed."
5115 int ff_extern;
5116 EOF
5117 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5118 extern_prefix=${sym%%ff_extern*}
5119
5120 check_cc <<EOF && enable_weak inline_asm
5121 void foo(void) { __asm__ volatile ("" ::); }
5122 EOF
5123
5124 _restrict=
5125 for restrict_keyword in restrict __restrict__ __restrict; do
5126     check_cc <<EOF && _restrict=$restrict_keyword && break
5127 void foo(char * $restrict_keyword p);
5128 EOF
5129 done
5130
5131 check_cc <<EOF && enable pragma_deprecated
5132 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
5133 EOF
5134
5135 check_cc <<EOF && enable attribute_packed
5136 struct { int x; } __attribute__((packed)) x;
5137 EOF
5138
5139 check_cc <<EOF && enable attribute_may_alias
5140 union { int x; } __attribute__((may_alias)) x;
5141 EOF
5142
5143 check_cc <<EOF || die "endian test failed"
5144 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5145 EOF
5146 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5147
5148 if ! enabled ppc64 || enabled bigendian; then
5149     disable vsx
5150 fi
5151
5152 check_gas() {
5153     log "check_gas using '$as' as AS"
5154     # :vararg is used on aarch64, arm and ppc altivec
5155     check_as <<EOF || return 1
5156 .macro m n, y:vararg=0
5157 \n: .int \y
5158 .endm
5159 m x
5160 EOF
5161     # .altmacro is only used in arm asm
5162     ! enabled arm || check_as <<EOF || return 1
5163 .altmacro
5164 EOF
5165     enable gnu_as
5166     return 0
5167 }
5168
5169 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5170     nogas=:
5171     enabled_any arm aarch64 && nogas=die
5172     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5173     as_noop=-v
5174
5175     case $as_type in
5176         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5177         gcc)  gaspp_as_type=gas ;;
5178         *)    gaspp_as_type=$as_type ;;
5179     esac
5180
5181     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5182
5183     test "${as#*gas-preprocessor.pl}" != "$as" ||
5184     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5185         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5186
5187     if ! check_gas ; then
5188         as=${gas:=$as}
5189         check_gas || \
5190             $nogas "GNU assembler not found, install/update gas-preprocessor"
5191     fi
5192
5193     check_as <<EOF && enable as_func
5194 .func test
5195 .endfunc
5196 EOF
5197 fi
5198
5199 check_inline_asm inline_asm_labels '"1:\n"'
5200
5201 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5202
5203 if enabled aarch64; then
5204     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5205     # internal assembler in clang 3.3 does not support this instruction
5206     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5207     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5208
5209     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5210
5211 elif enabled alpha; then
5212
5213     check_cflags -mieee
5214
5215 elif enabled arm; then
5216
5217     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
5218
5219     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
5220 float func(float a, float b){ return a+b; }
5221 EOF
5222
5223     enabled thumb && check_cflags -mthumb || check_cflags -marm
5224
5225     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
5226         enable vfp_args
5227     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5228         enable vfp_args
5229     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5230         case "${cross_prefix:-$cc}" in
5231             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
5232             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
5233 __asm__ (".eabi_attribute 28, 1");
5234 int main(void) { return 0; }
5235 EOF
5236         esac
5237         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5238     fi
5239
5240     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5241     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5242     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5243     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5244     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5245     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5246     enabled setend  && check_insn setend  'setend be'
5247
5248     [ $target_os = linux ] || [ $target_os = android ] ||
5249         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5250             $ARCH_EXT_LIST_ARM
5251
5252     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5253
5254     check_as <<EOF && enable as_dn_directive
5255 ra .dn d0.i16
5256 .unreq ra
5257 EOF
5258
5259     # llvm's integrated assembler supports .object_arch from llvm 3.5
5260     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
5261 .object_arch armv4
5262 EOF
5263
5264     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5265
5266 elif enabled mips; then
5267
5268     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5269     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5270     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5271
5272     # Enable minimum ISA based on selected options
5273     if enabled mips64; then
5274         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5275         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5276         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5277     else
5278         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5279         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5280         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5281         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5282     fi
5283
5284     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5285     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5286     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
5287     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5288     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5289
5290 elif enabled parisc; then
5291
5292     if enabled gcc; then
5293         case $($cc -dumpversion) in
5294             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5295         esac
5296     fi
5297
5298 elif enabled ppc; then
5299
5300     enable local_aligned_8 local_aligned_16 local_aligned_32
5301
5302     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5303     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5304     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5305     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5306
5307     # AltiVec flags: The FSF version of GCC differs from the Apple version
5308     if enabled altivec; then
5309         check_cflags -maltivec -mabi=altivec &&
5310         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
5311         check_cflags -faltivec
5312
5313         # check if our compiler supports Motorola AltiVec C API
5314         check_cc <<EOF || disable altivec
5315 $inc_altivec_h
5316 int main(void) {
5317     vector signed int v1 = (vector signed int) { 0 };
5318     vector signed int v2 = (vector signed int) { 1 };
5319     v1 = vec_add(v1, v2);
5320     return 0;
5321 }
5322 EOF
5323
5324         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5325     fi
5326
5327     if enabled vsx; then
5328         check_cflags -mvsx &&
5329         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
5330     fi
5331
5332     if enabled power8; then
5333         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
5334     fi
5335
5336 elif enabled x86; then
5337
5338     check_builtin rdtsc    intrin.h   "__rdtsc()"
5339     check_builtin mm_empty mmintrin.h "_mm_empty()"
5340
5341     enable local_aligned_8 local_aligned_16 local_aligned_32
5342
5343     # check whether EBP is available on x86
5344     # As 'i' is stored on the stack, this program will crash
5345     # if the base pointer is used to access it because the
5346     # base pointer is cleared in the inline assembly code.
5347     check_exec_crash <<EOF && enable ebp_available
5348 volatile int i=0;
5349 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5350 return i;
5351 EOF
5352
5353     # check whether EBX is available on x86
5354     check_inline_asm ebx_available '""::"b"(0)' &&
5355         check_inline_asm ebx_available '"":::"%ebx"'
5356
5357     # check whether xmm clobbers are supported
5358     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5359
5360     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5361         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5362
5363     # check whether binutils is new enough to compile SSSE3/MMXEXT
5364     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5365     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5366
5367     if ! disabled_any asm mmx yasm; then
5368         if check_cmd $yasmexe --version; then
5369             enabled x86_64 && yasm_extra="-m amd64"
5370             yasm_debug="-g dwarf2"
5371         elif check_cmd nasm -v; then
5372             yasmexe=nasm
5373             yasm_debug="-g -F dwarf"
5374             if enabled x86_64; then
5375                 case "$objformat" in
5376                     elf)   objformat=elf64 ;;
5377                     win32) objformat=win64 ;;
5378                 esac
5379             fi
5380         fi
5381
5382         YASMFLAGS="-f $objformat $yasm_extra"
5383         enabled pic               && append YASMFLAGS "-DPIC"
5384         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
5385         case "$objformat" in
5386             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
5387         esac
5388
5389         check_yasm "movbe ecx, [5]" && enable yasm ||
5390             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
5391         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
5392         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
5393         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
5394         check_yasm "CPU amdnop" || disable cpunop
5395     fi
5396
5397     case "$cpu" in
5398         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5399             disable fast_clz
5400         ;;
5401     esac
5402
5403 fi
5404
5405 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
5406
5407 check_ldflags -Wl,--as-needed
5408 check_ldflags -Wl,-z,noexecstack
5409
5410 if check_func dlopen && check_func dlsym; then
5411     ldl=
5412 elif check_func dlopen -ldl && check_func dlsym -ldl; then
5413     ldl=-ldl
5414 fi
5415
5416 avisynth_demuxer_extralibs='$ldl'
5417 cuda_extralibs='$ldl'
5418 decklink_outdev_extralibs="$decklink_outdev_extralibs $ldl"
5419 decklink_indev_extralibs="$decklink_indev_extralibs $ldl"
5420 frei0r_filter_extralibs='$ldl'
5421 frei0r_src_filter_extralibs='$ldl'
5422 ladspa_filter_extralibs='$ldl'
5423 nvenc_extralibs='$ldl'
5424 coreimage_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5425 coreimagesrc_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5426
5427 if ! disabled network; then
5428     check_func getaddrinfo $network_extralibs
5429     check_func inet_aton $network_extralibs
5430
5431     check_type netdb.h "struct addrinfo"
5432     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5433     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5434     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5435     check_type poll.h "struct pollfd"
5436     check_type netinet/sctp.h "struct sctp_event_subscribe"
5437     check_struct "sys/socket.h" "struct msghdr" msg_flags
5438     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5439     check_type netinet/in.h "struct sockaddr_in6"
5440     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5441     check_type "sys/types.h sys/socket.h" socklen_t
5442
5443     # Prefer arpa/inet.h over winsock2
5444     if check_header arpa/inet.h ; then
5445         check_func closesocket
5446     elif check_header winsock2.h ; then
5447         check_func_headers winsock2.h closesocket -lws2 &&
5448             network_extralibs="-lws2" ||
5449         { check_func_headers winsock2.h closesocket -lws2_32 &&
5450             network_extralibs="-lws2_32"; } || disable winsock2_h network
5451         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5452
5453         check_type ws2tcpip.h socklen_t
5454         check_type ws2tcpip.h "struct addrinfo"
5455         check_type ws2tcpip.h "struct group_source_req"
5456         check_type ws2tcpip.h "struct ip_mreq_source"
5457         check_type ws2tcpip.h "struct ipv6_mreq"
5458         check_type winsock2.h "struct pollfd"
5459         check_struct winsock2.h "struct sockaddr" sa_len
5460         check_type ws2tcpip.h "struct sockaddr_in6"
5461         check_type ws2tcpip.h "struct sockaddr_storage"
5462     else
5463         disable network
5464     fi
5465 fi
5466
5467 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5468 check_builtin atomic_compare_exchange "" "int *ptr, *oldval; int newval; __atomic_compare_exchange_n(ptr, oldval, newval, 0, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST)"
5469 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5470 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5471 check_builtin sarestart signal.h "SA_RESTART"
5472 check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" -lpthread
5473 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5474 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5475 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5476 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5477
5478 case "$custom_allocator" in
5479     jemalloc)
5480         # jemalloc by default does not use a prefix
5481         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5482     ;;
5483     tcmalloc)
5484         require_pkg_config libtcmalloc gperftools/tcmalloc.h tc_malloc
5485         malloc_prefix=tc_
5486     ;;
5487 esac
5488
5489 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5490 check_func  ${malloc_prefix}memalign            && enable memalign
5491 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5492
5493 check_func  access
5494 check_func_headers stdlib.h arc4random
5495 check_func_headers time.h clock_gettime || { check_func_headers time.h clock_gettime -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
5496 check_func  fcntl
5497 check_func  fork
5498 check_func  gethrtime
5499 check_func  getopt
5500 check_func  getrusage
5501 check_func  gettimeofday
5502 check_func  isatty
5503 check_func  mach_absolute_time
5504 check_func  mkstemp
5505 check_func  mmap
5506 check_func  mprotect
5507 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5508 check_func_headers time.h nanosleep || { check_func_headers time.h nanosleep -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
5509 check_func  sched_getaffinity
5510 check_func  setrlimit
5511 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5512 check_func  strerror_r
5513 check_func  sysconf
5514 check_func  sysctl
5515 check_func  usleep
5516
5517 check_func_headers conio.h kbhit
5518 check_func_headers io.h setmode
5519 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5520 check_func_headers stdlib.h getenv
5521 check_func_headers sys/stat.h lstat
5522
5523 check_func_headers windows.h CoTaskMemFree -lole32
5524 check_func_headers windows.h GetProcessAffinityMask
5525 check_func_headers windows.h GetProcessTimes
5526 check_func_headers windows.h GetSystemTimeAsFileTime
5527 check_func_headers windows.h LoadLibrary
5528 check_func_headers windows.h MapViewOfFile
5529 check_func_headers windows.h PeekNamedPipe
5530 check_func_headers windows.h SetConsoleTextAttribute
5531 check_func_headers windows.h SetConsoleCtrlHandler
5532 check_func_headers windows.h Sleep
5533 check_func_headers windows.h VirtualAlloc
5534 check_struct windows.h "CONDITION_VARIABLE" Ptr
5535 check_func_headers glob.h glob
5536 enabled xlib &&
5537     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5538
5539 check_header AudioToolbox/AudioToolbox.h
5540 check_header direct.h
5541 check_header dirent.h
5542 check_header dlfcn.h
5543 check_header d3d11.h
5544 check_header dxva.h
5545 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5546 check_header io.h
5547 check_header libcrystalhd/libcrystalhd_if.h
5548 check_header mach/mach_time.h
5549 check_header malloc.h
5550 check_header net/udplite.h
5551 check_header poll.h
5552 check_header sys/mman.h
5553 check_header sys/param.h
5554 check_header sys/resource.h
5555 check_header sys/select.h
5556 check_header sys/time.h
5557 check_header sys/un.h
5558 check_header termios.h
5559 check_header unistd.h
5560 check_header valgrind/valgrind.h
5561 check_header vdpau/vdpau.h
5562 check_header vdpau/vdpau_x11.h
5563 check_header VideoDecodeAcceleration/VDADecoder.h
5564 check_header VideoToolbox/VideoToolbox.h
5565 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5566 enabled videotoolbox && check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferColorPrimaries_ITU_R_2020 -framework CoreVideo
5567 check_header windows.h
5568 check_header X11/extensions/XvMClib.h
5569 check_header asm/types.h
5570
5571 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
5572 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
5573 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
5574 check_lib "CoreServices/CoreServices.h" UTGetOSTypeFromString "-framework CoreServices"
5575
5576 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5577
5578 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5579 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5580 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5581 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5582 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5583
5584 check_type "va/va.h" "VAPictureParameterBufferHEVC"
5585 check_type "va/va.h" "VADecPictureParameterBufferVP9"
5586 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
5587 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
5588 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5589 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5590
5591 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5592
5593 check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt
5594
5595 if ! disabled w32threads && ! enabled pthreads; then
5596     check_func_headers "windows.h process.h" _beginthreadex &&
5597         enable w32threads || disable w32threads
5598     if ! enabled w32threads && enabled winrt; then
5599         check_func_headers "windows.h" CreateThread &&
5600             enable w32threads || disable w32threads
5601     fi
5602 fi
5603
5604 # check for some common methods of building with pthread support
5605 # do this before the optional library checks as some of them require pthreads
5606 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5607     enable pthreads
5608     if check_func pthread_join -pthread && check_func pthread_create -pthread; then
5609         add_cflags -pthread
5610         add_extralibs -pthread
5611     elif check_func pthread_join -pthreads && check_func pthread_create -pthreads; then
5612         add_cflags -pthreads
5613         add_extralibs -pthreads
5614     elif check_func pthread_join -ldl -pthread && check_func pthread_create -ldl -pthread; then
5615         add_cflags -ldl -pthread
5616         add_extralibs -ldl -pthread
5617     elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
5618         add_extralibs -lpthreadGC2
5619     elif check_lib pthread.h pthread_join -lpthread && check_lib pthread.h pthread_create -lpthread; then
5620         :
5621     elif ! check_func pthread_join && ! check_func pthread_create; then
5622         disable pthreads
5623     fi
5624     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5625 fi
5626
5627
5628 if enabled pthreads; then
5629   check_func pthread_cancel
5630 fi
5631
5632 enabled pthreads &&
5633     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)"
5634
5635 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
5636 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
5637 disabled  lzma || check_lib2  lzma.h lzma_version_number -llzma || disable lzma
5638
5639 check_lib math.h sin -lm && LIBM="-lm"
5640 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
5641
5642 atan2f_args=2
5643 copysign_args=2
5644 hypot_args=2
5645 ldexpf_args=2
5646 powf_args=2
5647
5648 for func in $MATH_FUNCS; do
5649     eval check_mathfunc $func \${${func}_args:-1}
5650 done
5651
5652 for func in $COMPLEX_FUNCS; do
5653     eval check_complexfunc $func \${${func}_args:-1}
5654 done
5655
5656 # these are off by default, so fail if requested and not available
5657 enabled avfoundation_indev && { check_header_objcc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
5658 enabled avfoundation_indev && { check_lib2 CoreGraphics/CoreGraphics.h CGGetActiveDisplayList -framework CoreGraphics ||
5659                                 check_lib2 ApplicationServices/ApplicationServices.h CGGetActiveDisplayList -framework ApplicationServices; }
5660 enabled cuvid             && { enabled cuda ||
5661                                die "ERROR: CUVID requires CUDA"; }
5662 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5663 enabled coreimage_filter  && { check_header_objcc QuartzCore/CoreImage.h || disable coreimage_filter; }
5664 enabled coreimagesrc_filter && { check_header_objcc QuartzCore/CoreImage.h || disable coreimagesrc_filter; }
5665 enabled decklink          && { { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; } &&
5666                                { check_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a060100" || die "ERROR: Decklink API version must be >= 10.6.1."; } }
5667 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
5668 enabled gmp               && require2 gmp gmp.h mpz_export -lgmp
5669 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
5670 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads &&
5671                                check_lib2 "dlfcn.h" dlopen -ldl; }
5672 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
5673 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5674 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
5675 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
5676 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
5677 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5678                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
5679                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5680 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
5681 enabled libfdk_aac        && { use_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5682                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5683                                  warn "using libfdk without pkg-config"; } }
5684 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"
5685 enabled libflite          && require2 libflite "flite/flite.h" flite_init $flite_libs
5686 enabled fontconfig        && enable libfontconfig
5687 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
5688 enabled libfreetype       && require_libfreetype
5689 enabled libfribidi        && require_pkg_config fribidi fribidi.h fribidi_version_info
5690 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
5691 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5692                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
5693                                done || die "ERROR: libgsm not found"; }
5694 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
5695 enabled libkvazaar        && require_pkg_config "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
5696 enabled libmfx            && require_pkg_config libmfx "mfx/mfxvideo.h" MFXInit
5697 enabled libmodplug        && require_pkg_config libmodplug libmodplug/modplug.h ModPlug_Load
5698 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5699 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
5700 enabled libnpp            && require libnpp npp.h nppGetLibVersion -lnppi -lnppc
5701 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5702 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5703 enabled libopencv         && { check_header opencv2/core/core_c.h &&
5704                                { use_pkg_config opencv opencv2/core/core_c.h cvCreateImageHeader ||
5705                                  require opencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
5706                                require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader; }
5707 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
5708 enabled libopenjpeg       && { { check_lib2 openjpeg-2.1/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5709                                check_lib2 openjpeg-2.1/openjpeg.h opj_version -lopenjp2 ||
5710                                { check_lib2 openjpeg-2.0/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5711                                { check_lib2 openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5712                                { check_lib2 openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5713                                die "ERROR: libopenjpeg not found"; }
5714 enabled libopenmpt        && require_pkg_config "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create
5715 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
5716 enabled libpulse          && require_pkg_config libpulse pulse/pulseaudio.h pa_context_new
5717 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
5718 enabled librubberband     && require_pkg_config "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new
5719 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
5720 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
5721 enabled libsmbclient      && { use_pkg_config smbclient libsmbclient.h smbc_init ||
5722                                require smbclient libsmbclient.h smbc_init -lsmbclient; }
5723 enabled libsnappy         && require snappy snappy-c.h snappy_compress -lsnappy
5724 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr && LIBSOXR="-lsoxr"
5725 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
5726 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
5727 enabled libtesseract      && require_pkg_config tesseract tesseract/capi.h TessBaseAPICreate
5728 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
5729 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
5730                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
5731                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
5732 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
5733 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
5734 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
5735 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
5736
5737 enabled libvpx            && {
5738     enabled libvpx_vp8_decoder && {
5739         use_pkg_config "vpx >= 0.9.1" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
5740             check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
5741                 die "ERROR: libvpx decoder version must be >=0.9.1";
5742     }
5743     enabled libvpx_vp8_encoder && {
5744         use_pkg_config "vpx >= 0.9.7" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
5745             check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
5746                 die "ERROR: libvpx encoder version must be >=0.9.7";
5747     }
5748     enabled libvpx_vp9_decoder && {
5749         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
5750             check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx ||
5751                 disable libvpx_vp9_decoder;
5752     }
5753     enabled libvpx_vp9_encoder && {
5754         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
5755             check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx ||
5756                 disable libvpx_vp9_encoder;
5757     }
5758     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
5759         die "libvpx enabled but no supported decoders found"
5760     fi
5761 }
5762
5763 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
5764 enabled libwebp           && {
5765     enabled libwebp_encoder      && require_pkg_config "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
5766     enabled libwebp_anim_encoder && { use_pkg_config "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit || disable libwebp_anim_encoder; } }
5767 enabled libx264           && { use_pkg_config x264 "stdint.h x264.h" x264_encoder_encode ||
5768                                { require libx264 x264.h x264_encoder_encode -lx264 &&
5769                                  warn "using libx264 without pkg-config"; } } &&
5770                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
5771                                die "ERROR: libx264 must be installed and version must be >= 0.118."; } &&
5772                              { check_cpp_condition x264.h "X264_MPEG2" &&
5773                                enable libx262; }
5774 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
5775                              { check_cpp_condition x265.h "X265_BUILD >= 68" ||
5776                                die "ERROR: libx265 version must be >= 68."; }
5777 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
5778 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
5779 enabled libzimg           && require_pkg_config "zimg >= 2.3.0" zimg.h zimg_get_api_version
5780 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
5781 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi &&
5782                              { check_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
5783                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
5784 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
5785 enabled mmal              && { check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
5786                                 { ! enabled cross_compile && {
5787                                     add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline ;
5788                                     add_extralibs -L/opt/vc/lib/ -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ;
5789                                     check_lib interface/mmal/mmal.h mmal_port_connect ; }
5790                                 check_lib interface/mmal/mmal.h mmal_port_connect ; } ||
5791                                die "ERROR: mmal not found"; }
5792 enabled mmal && check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"
5793
5794 enabled netcdf            && require_pkg_config netcdf netcdf.h nc_inq_libvers
5795 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
5796                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
5797                                die "ERROR: openal not found"; } &&
5798                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
5799                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
5800 enabled opencl            && { check_lib2 OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
5801                                check_lib2 CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
5802                                die "ERROR: opencl not found"; } &&
5803                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
5804                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
5805                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
5806 enabled opengl            && { check_lib GL/glx.h glXGetProcAddress "-lGL" ||
5807                                check_lib2 windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
5808                                check_lib2 OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
5809                                check_lib2 ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
5810                                die "ERROR: opengl not found."
5811                              }
5812 enabled omx_rpi && enable omx
5813 enabled omx               && { check_header OMX_Core.h ||
5814                                 { ! enabled cross_compile && enabled omx_rpi && {
5815                                     add_cflags -isystem/opt/vc/include/IL ; }
5816                                 check_header OMX_Core.h ; } ||
5817                                die "ERROR: OpenMAX IL headers not found"; }
5818 enabled openssl           && { use_pkg_config openssl openssl/ssl.h OPENSSL_init_ssl ||
5819                                use_pkg_config openssl openssl/ssl.h SSL_library_init ||
5820                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
5821                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
5822                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
5823                                die "ERROR: openssl not found"; }
5824 enabled qtkit_indev      && { check_header_objcc QTKit/QTKit.h || disable qtkit_indev; }
5825
5826 # libdc1394 check
5827 if enabled libdc1394; then
5828     { require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new &&
5829         enable libdc1394_2; } ||
5830     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
5831         enable libdc1394_1; } ||
5832     die "ERROR: No version of libdc1394 found "
5833 fi
5834
5835 if enabled gcrypt; then
5836     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
5837     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
5838         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
5839         gcrypt_libs=$("${GCRYPT_CONFIG}" --libs)
5840         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_libs ||
5841             die "ERROR: gcrypt not found"
5842         add_cflags $gcrypt_cflags && add_extralibs $gcrypt_libs
5843     else
5844         require2 gcrypt gcrypt.h gcry_mpi_new -lgcrypt
5845     fi
5846 fi
5847
5848 disabled sdl && disable sdl2
5849 if ! disabled sdl2; then
5850     SDL2_CONFIG="${cross_prefix}sdl2-config"
5851     if check_pkg_config sdl2 SDL_events.h SDL_PollEvent; then
5852         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
5853         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
5854         check_func SDL_Init $sdl2_libs $sdl2_cflags && enable sdl2
5855     else
5856       if "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
5857         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
5858         sdl2_libs=$("${SDL2_CONFIG}" --libs)
5859         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
5860         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
5861         check_func SDL_Init $sdl2_libs $sdl2_cflags && enable sdl2
5862       fi
5863     fi
5864     if test $target_os = "mingw32"; then
5865         sdl2_libs="$sdl2_libs -mconsole"
5866     fi
5867 fi
5868 enabled sdl2 && add_cflags $sdl2_cflags && add_extralibs $sdl2_libs
5869
5870 disabled securetransport || { check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5871     check_lib2 "Security/SecureTransport.h Security/Security.h" "SSLCreateContext SecItemImport" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5872     enable securetransport; }
5873
5874 disabled schannel || { check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
5875                        check_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" && enable schannel && add_extralibs -lsecur32; }
5876
5877 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
5878 enabled makeinfo \
5879     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
5880     && enable makeinfo_html || disable makeinfo_html
5881 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
5882 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
5883 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
5884 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
5885
5886 check_header linux/fb.h
5887 check_header linux/videodev.h
5888 check_header linux/videodev2.h
5889 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5890
5891 check_header sys/videoio.h
5892 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5893
5894 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
5895 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
5896 # w32api 3.12 had it defined wrong
5897 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
5898
5899 check_type "dshow.h" IBaseFilter
5900
5901 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
5902 { check_header dev/bktr/ioctl_meteor.h &&
5903   check_header dev/bktr/ioctl_bt848.h; } ||
5904 { check_header machine/ioctl_meteor.h &&
5905   check_header machine/ioctl_bt848.h; } ||
5906 { check_header dev/video/meteor/ioctl_meteor.h &&
5907   check_header dev/video/bktr/ioctl_bt848.h; } ||
5908 check_header dev/ic/bt8xx.h
5909
5910 check_header sndio.h
5911 if check_struct sys/soundcard.h audio_buf_info bytes; then
5912     enable_safe sys/soundcard.h
5913 else
5914     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
5915     #include <sys/soundcard.h>
5916     audio_buf_info abc;
5917 EOF
5918 fi
5919 check_header soundcard.h
5920
5921 enabled_any alsa_indev alsa_outdev &&
5922     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
5923
5924 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack &&
5925     check_func jack_port_get_latency_range -ljack
5926
5927 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
5928
5929 if enabled libcdio; then
5930     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
5931     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
5932     die "ERROR: No usable libcdio/cdparanoia found"
5933 fi
5934
5935 enabled xlib &&
5936     check_lib X11/Xlib.h XOpenDisplay -lX11 || disable xlib
5937
5938 if ! disabled libxcb; then
5939     check_pkg_config "xcb >= 1.4" xcb/xcb.h xcb_connect || {
5940         enabled libxcb && die "ERROR: libxcb >= 1.4 not found";
5941     } && disable x11grab && enable libxcb
5942
5943 if enabled libxcb; then
5944     disabled libxcb_shm || {
5945         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
5946             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
5947         } && check_header sys/shm.h && enable libxcb_shm; }
5948
5949     disabled libxcb_xfixes || {
5950         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
5951             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
5952         } && enable libxcb_xfixes; }
5953
5954     disabled libxcb_shape || {
5955         check_pkg_config xcb-shape xcb/shape.h xcb_shape_get_rectangles || {
5956             enabled libxcb_shape && die "ERROR: libxcb_shape not found";
5957         } && enable libxcb_shape; }
5958
5959     add_cflags $xcb_cflags $xcb_shm_cflags $xcb_xfixes_cflags $xcb_shape_cflags
5960     add_extralibs $xcb_libs $xcb_shm_libs $xcb_xfixes_libs $xcb_shape_libs
5961 fi
5962 fi
5963
5964 if enabled x11grab; then
5965     enabled xlib || die "ERROR: Xlib not found"
5966     require Xext X11/extensions/XShm.h XShmCreateImage -lXext
5967     require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
5968 fi
5969
5970 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
5971
5972 enabled dxva2api_h &&
5973     check_cc <<EOF && enable dxva2api_cobj
5974 #define _WIN32_WINNT 0x0600
5975 #define COBJMACROS
5976 #include <windows.h>
5977 #include <d3d9.h>
5978 #include <dxva2api.h>
5979 int main(void) { IDirectXVideoDecoder *o = NULL; IDirectXVideoDecoder_Release(o); return 0; }
5980 EOF
5981
5982 enabled vaapi &&
5983     check_lib va/va.h vaInitialize -lva ||
5984     disable vaapi
5985
5986 enabled vaapi &&
5987     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
5988     disable vaapi
5989
5990 if enabled vaapi ; then
5991     enabled xlib &&
5992     check_lib2 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 &&
5993     enable vaapi_x11
5994
5995     check_lib2 "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm &&
5996     enable vaapi_drm
5997 fi
5998
5999 enabled vdpau &&
6000     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
6001     disable vdpau
6002
6003 enabled vdpau && enabled xlib &&
6004     check_lib2 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
6005     enable vdpau_x11
6006
6007 if enabled x86; then
6008     case $target_os in
6009         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6010             ;;
6011         *)
6012             disable cuda cuvid nvenc
6013             ;;
6014     esac
6015 else
6016     disable cuda cuvid nvenc
6017 fi
6018
6019 enabled nvenc &&
6020     check_cc -I$source_path <<EOF || disable nvenc
6021 #include "compat/nvenc/nvEncodeAPI.h"
6022 NV_ENCODE_API_FUNCTION_LIST flist;
6023 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6024 int main(void) { return 0; }
6025 EOF
6026
6027 # Funny iconv installations are not unusual, so check it after all flags have been set
6028 disabled iconv || check_func_headers iconv.h iconv || check_lib2 iconv.h iconv -liconv || disable iconv
6029
6030 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6031
6032 # add some useful compiler flags if supported
6033 check_cflags -Wdeclaration-after-statement
6034 check_cflags -Wall
6035 check_cflags -Wdisabled-optimization
6036 check_cflags -Wpointer-arith
6037 check_cflags -Wredundant-decls
6038 check_cflags -Wwrite-strings
6039 check_cflags -Wtype-limits
6040 check_cflags -Wundef
6041 check_cflags -Wmissing-prototypes
6042 check_cflags -Wno-pointer-to-int-cast
6043 check_cflags -Wstrict-prototypes
6044 check_cflags -Wempty-body
6045 enabled extra_warnings && check_cflags -Winline
6046 enabled extra_warnings && check_cflags -Wcast-qual
6047
6048 check_disable_warning(){
6049     warning_flag=-W${1#-Wno-}
6050     test_cflags $warning_flag && add_cflags $1
6051 }
6052
6053 check_disable_warning -Wno-parentheses
6054 check_disable_warning -Wno-switch
6055 check_disable_warning -Wno-format-zero-length
6056 check_disable_warning -Wno-pointer-sign
6057 check_disable_warning -Wno-unused-const-variable
6058
6059 # add some linker flags
6060 check_ldflags -Wl,--warn-common
6061 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6062 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
6063 enabled rpath && add_ldlibflags -Wl,-rpath,$libdir
6064 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6065
6066 # add some strip flags
6067 # -wN '..@*' is more selective than -x, but not available everywhere.
6068 check_stripflags -wN \'..@*\' || check_stripflags -x
6069
6070 enabled neon_clobber_test &&
6071     check_ldflags -Wl,--wrap,avcodec_open2              \
6072                   -Wl,--wrap,avcodec_decode_audio4      \
6073                   -Wl,--wrap,avcodec_decode_video2      \
6074                   -Wl,--wrap,avcodec_decode_subtitle2   \
6075                   -Wl,--wrap,avcodec_encode_audio2      \
6076                   -Wl,--wrap,avcodec_encode_video2      \
6077                   -Wl,--wrap,avcodec_send_packet        \
6078                   -Wl,--wrap,avcodec_receive_frame      \
6079                   -Wl,--wrap,avcodec_send_frame         \
6080                   -Wl,--wrap,avcodec_receive_packet     \
6081                   -Wl,--wrap,avcodec_encode_subtitle    \
6082                   -Wl,--wrap,swr_convert                \
6083                   -Wl,--wrap,avresample_convert ||
6084     disable neon_clobber_test
6085
6086 enabled xmm_clobber_test &&
6087     check_ldflags -Wl,--wrap,avcodec_open2              \
6088                   -Wl,--wrap,avcodec_decode_audio4      \
6089                   -Wl,--wrap,avcodec_decode_video2      \
6090                   -Wl,--wrap,avcodec_decode_subtitle2   \
6091                   -Wl,--wrap,avcodec_encode_audio2      \
6092                   -Wl,--wrap,avcodec_encode_video2      \
6093                   -Wl,--wrap,avcodec_encode_subtitle    \
6094                   -Wl,--wrap,avcodec_send_packet        \
6095                   -Wl,--wrap,avcodec_receive_frame      \
6096                   -Wl,--wrap,avcodec_send_frame         \
6097                   -Wl,--wrap,avcodec_receive_packet     \
6098                   -Wl,--wrap,swr_convert                \
6099                   -Wl,--wrap,avresample_convert         \
6100                   -Wl,--wrap,sws_scale ||
6101     disable xmm_clobber_test
6102
6103 check_ld "cc" <<EOF && enable proper_dce
6104 extern const int array[512];
6105 static inline int func(void) { return array[0]; }
6106 int main(void) { return 0; }
6107 EOF
6108
6109 if enabled proper_dce; then
6110     echo "X { local: *; };" > $TMPV
6111     if test_ldflags -Wl,${version_script},$TMPV; then
6112         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6113         check_cc <<EOF && enable symver_asm_label
6114 void ff_foo(void) __asm__ ("av_foo@VERSION");
6115 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6116 EOF
6117         check_cc <<EOF && enable symver_gnu_asm
6118 __asm__(".symver ff_foo,av_foo@VERSION");
6119 void ff_foo(void) {}
6120 EOF
6121     fi
6122 fi
6123
6124 if [ -z "$optflags" ]; then
6125     if enabled small; then
6126         optflags=$cflags_size
6127     elif enabled optimizations; then
6128         optflags=$cflags_speed
6129     else
6130         optflags=$cflags_noopt
6131     fi
6132 fi
6133
6134 check_optflags(){
6135     check_cflags "$@"
6136     enabled lto && check_ldflags "$@"
6137 }
6138
6139
6140 if enabled lto; then
6141     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6142     check_cflags  -flto
6143     check_ldflags -flto $cpuflags
6144     disable inline_asm_direct_symbol_refs
6145 fi
6146
6147 check_optflags $optflags
6148 check_optflags -fno-math-errno
6149 check_optflags -fno-signed-zeros
6150
6151 enabled ftrapv && check_cflags -ftrapv
6152
6153 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6154 int x;
6155 EOF
6156
6157
6158 if enabled icc; then
6159     # Just warnings, no remarks
6160     check_cflags -w1
6161     # -wd: Disable following warnings
6162     # 144, 167, 556: -Wno-pointer-sign
6163     # 188: enumerated type mixed with another type
6164     # 1292: attribute "foo" ignored
6165     # 1419: external declaration in primary source file
6166     # 10006: ignoring unknown option -fno-signed-zeros
6167     # 10148: ignoring unknown option -Wno-parentheses
6168     # 10156: ignoring option '-W'; no argument required
6169     # 13200: No EMMS instruction before call to function
6170     # 13203: No EMMS instruction before return from function
6171     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6172     # 11030: Warning unknown option --as-needed
6173     # 10156: ignoring option '-export'; no argument required
6174     check_ldflags -wd10156,11030
6175     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6176     enable ebp_available
6177     # The test above does not test linking
6178     enabled lto && disable symver_asm_label
6179     if enabled x86_32; then
6180         icc_version=$($cc -dumpversion)
6181         test ${icc_version%%.*} -ge 11 &&
6182             check_cflags -falign-stack=maintain-16-byte ||
6183             disable aligned_stack
6184     fi
6185 elif enabled ccc; then
6186     # disable some annoying warnings
6187     add_cflags -msg_disable bitnotint
6188     add_cflags -msg_disable mixfuncvoid
6189     add_cflags -msg_disable nonstandcast
6190     add_cflags -msg_disable unsupieee
6191 elif enabled gcc; then
6192     check_optflags -fno-tree-vectorize
6193     check_cflags -Werror=format-security
6194     check_cflags -Werror=implicit-function-declaration
6195     check_cflags -Werror=missing-prototypes
6196     check_cflags -Werror=return-type
6197     check_cflags -Werror=vla
6198     check_cflags -Wformat
6199     check_cflags -fdiagnostics-color=auto
6200     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6201 elif enabled llvm_gcc; then
6202     check_cflags -mllvm -stack-alignment=16
6203 elif enabled clang; then
6204     check_cflags -mllvm -stack-alignment=16
6205     check_cflags -mstack-alignment=16
6206     check_cflags -Qunused-arguments
6207     check_cflags -Werror=implicit-function-declaration
6208     check_cflags -Werror=missing-prototypes
6209     check_cflags -Werror=return-type
6210 elif enabled cparser; then
6211     add_cflags -Wno-missing-variable-declarations
6212     add_cflags -Wno-empty-statement
6213 elif enabled armcc; then
6214     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6215     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6216     # 2523: use of inline assembly is deprecated
6217     add_cflags -W${armcc_opt},--diag_suppress=2523
6218     add_cflags -W${armcc_opt},--diag_suppress=1207
6219     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6220     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6221     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6222     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6223 elif enabled tms470; then
6224     add_cflags -pds=824 -pds=837
6225     disable inline_asm
6226 elif enabled pathscale; then
6227     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6228 elif enabled_any msvc icl; then
6229     enabled x86_32 && disable aligned_stack
6230     enabled_all x86_32 debug && add_cflags -Oy-
6231     enabled debug && add_ldflags -debug
6232     enable pragma_deprecated
6233     if enabled icl; then
6234         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6235         # (correctly) on icl 13.x.
6236         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6237             add_cflags -Qansi-alias
6238         # Some inline asm is not compilable in debug
6239         if enabled debug; then
6240             disable ebp_available
6241             disable ebx_available
6242         fi
6243     fi
6244     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6245     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
6246     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6247     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6248     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6249     # MSVC 2013 and newer can handle it fine.
6250     # If this declspec fails, force including stdlib.h before the restrict redefinition
6251     # happens in config.h.
6252     if [ $_restrict != restrict ]; then
6253         check_cc <<EOF || add_cflags -FIstdlib.h
6254 __declspec($_restrict) void* foo(int);
6255 EOF
6256     fi
6257     check_func strtoll || add_cflags -Dstrtoll=_strtoi64
6258     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6259     # this flag should be re-checked on newer compiler releases and put under a
6260     # version check once its fixed
6261     check_cflags -d2SSAOptimizer-
6262 fi
6263
6264 for pfx in "" host_; do
6265     varname=${pfx%_}cc_type
6266     eval "type=\$$varname"
6267     if [ $type = "msvc" ]; then
6268         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6269 static inline int foo(int a) { return a; }
6270 EOF
6271     fi
6272 done
6273
6274 case $as_type in
6275     clang)
6276         add_asflags -Qunused-arguments
6277     ;;
6278 esac
6279
6280 case $ld_type in
6281     clang)
6282         check_ldflags -Qunused-arguments
6283     ;;
6284 esac
6285
6286 case $target_os in
6287     osf1)
6288         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
6289     ;;
6290     plan9)
6291         add_cppflags -Dmain=plan9_main
6292     ;;
6293 esac
6294
6295 enable frame_thread_encoder
6296
6297 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6298
6299 check_deps $CONFIG_LIST       \
6300            $CONFIG_EXTRA      \
6301            $HAVE_LIST         \
6302            $ALL_COMPONENTS    \
6303
6304 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"
6305
6306
6307 if test $target_os = "haiku"; then
6308     disable memalign
6309     disable posix_memalign
6310 fi
6311
6312 enabled_all dxva2 dxva2api_cobj CoTaskMemFree &&
6313     prepend ffmpeg_libs $($ldflags_filter "-lole32") &&
6314     enable dxva2_lib
6315
6316 ! enabled_any memalign posix_memalign aligned_malloc &&
6317     enabled simd_align_16 && enable memalign_hack
6318
6319 # add_dep lib dep
6320 # -> enable ${lib}_deps_${dep}
6321 # -> add $dep to ${lib}_deps only once
6322 add_dep() {
6323     lib=$1
6324     dep=$2
6325     enabled "${lib}_deps_${dep}" && return 0
6326     enable  "${lib}_deps_${dep}"
6327     prepend "${lib}_deps" $dep
6328 }
6329
6330 # merge deps lib components
6331 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
6332 merge_deps() {
6333     lib=$1
6334     shift
6335     for comp in $*; do
6336         enabled $comp || continue
6337         eval "dep=\"\$${comp}_deps\""
6338         for d in $dep; do
6339             add_dep $lib $d
6340         done
6341     done
6342 }
6343
6344 merge_deps libavfilter $FILTER_LIST
6345
6346 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6347
6348 for thread in $THREADS_LIST; do
6349     if enabled $thread; then
6350         test -n "$thread_type" &&
6351             die "ERROR: Only one thread type must be selected." ||
6352             thread_type="$thread"
6353     fi
6354 done
6355
6356 enabled zlib && add_cppflags -DZLIB_CONST
6357
6358 # conditional library dependencies, in linking order
6359 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6360 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6361 enabled aresample_filter    && prepend avfilter_deps "swresample"
6362 enabled asyncts_filter      && prepend avfilter_deps "avresample"
6363 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6364 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6365 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6366 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6367 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6368 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6369 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6370 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6371 enabled pan_filter          && prepend avfilter_deps "swresample"
6372 enabled pp_filter           && prepend avfilter_deps "postproc"
6373 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6374 enabled resample_filter && prepend avfilter_deps "avresample"
6375 enabled sab_filter          && prepend avfilter_deps "swscale"
6376 enabled scale_filter    && prepend avfilter_deps "swscale"
6377 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6378 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6379 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6380 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6381 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6382 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6383 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6384 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6385 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6386
6387 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6388
6389 enabled opus_decoder    && prepend avcodec_deps "swresample"
6390
6391 expand_deps(){
6392     lib_deps=${1}_deps
6393     eval "deps=\$$lib_deps"
6394     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6395     unique $lib_deps
6396 }
6397
6398 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6399 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6400
6401 map 'expand_deps $v' $LIBRARY_LIST
6402
6403 echo "install prefix            $prefix"
6404 echo "source path               $source_path"
6405 echo "C compiler                $cc"
6406 echo "C library                 $libc_type"
6407 if test "$host_cc" != "$cc"; then
6408     echo "host C compiler           $host_cc"
6409     echo "host C library            $host_libc_type"
6410 fi
6411 echo "ARCH                      $arch ($cpu)"
6412 if test "$build_suffix" != ""; then
6413     echo "build suffix              $build_suffix"
6414 fi
6415 if test "$progs_suffix" != ""; then
6416     echo "progs suffix              $progs_suffix"
6417 fi
6418 if test "$extra_version" != ""; then
6419     echo "version string suffix     $extra_version"
6420 fi
6421 echo "big-endian                ${bigendian-no}"
6422 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6423 if enabled x86; then
6424     echo "${yasmexe}                      ${yasm-no}"
6425     echo "MMX enabled               ${mmx-no}"
6426     echo "MMXEXT enabled            ${mmxext-no}"
6427     echo "3DNow! enabled            ${amd3dnow-no}"
6428     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6429     echo "SSE enabled               ${sse-no}"
6430     echo "SSSE3 enabled             ${ssse3-no}"
6431     echo "AESNI enabled             ${aesni-no}"
6432     echo "AVX enabled               ${avx-no}"
6433     echo "XOP enabled               ${xop-no}"
6434     echo "FMA3 enabled              ${fma3-no}"
6435     echo "FMA4 enabled              ${fma4-no}"
6436     echo "i686 features enabled     ${i686-no}"
6437     echo "CMOV is fast              ${fast_cmov-no}"
6438     echo "EBX available             ${ebx_available-no}"
6439     echo "EBP available             ${ebp_available-no}"
6440 fi
6441 if enabled aarch64; then
6442     echo "NEON enabled              ${neon-no}"
6443     echo "VFP enabled               ${vfp-no}"
6444 fi
6445 if enabled arm; then
6446     echo "ARMv5TE enabled           ${armv5te-no}"
6447     echo "ARMv6 enabled             ${armv6-no}"
6448     echo "ARMv6T2 enabled           ${armv6t2-no}"
6449     echo "VFP enabled               ${vfp-no}"
6450     echo "NEON enabled              ${neon-no}"
6451     echo "THUMB enabled             ${thumb-no}"
6452 fi
6453 if enabled mips; then
6454     echo "MIPS FPU enabled          ${mipsfpu-no}"
6455     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6456     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6457     echo "MIPS MSA enabled          ${msa-no}"
6458     echo "LOONGSON MMI enabled      ${mmi-no}"
6459 fi
6460 if enabled ppc; then
6461     echo "AltiVec enabled           ${altivec-no}"
6462     echo "VSX enabled               ${vsx-no}"
6463     echo "POWER8 enabled            ${power8-no}"
6464     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6465     echo "dcbzl available           ${dcbzl-no}"
6466 fi
6467 echo "debug symbols             ${debug-no}"
6468 echo "strip symbols             ${stripping-no}"
6469 echo "optimize for size         ${small-no}"
6470 echo "optimizations             ${optimizations-no}"
6471 echo "static                    ${static-no}"
6472 echo "shared                    ${shared-no}"
6473 echo "postprocessing support    ${postproc-no}"
6474 echo "new filter support        ${avfilter-no}"
6475 echo "network support           ${network-no}"
6476 echo "threading support         ${thread_type-no}"
6477 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6478 echo "SDL2 support              ${sdl2-no}"
6479 echo "opencl enabled            ${opencl-no}"
6480 echo "JNI support               ${jni-no}"
6481 echo "texi2html enabled         ${texi2html-no}"
6482 echo "perl enabled              ${perl-no}"
6483 echo "pod2man enabled           ${pod2man-no}"
6484 echo "makeinfo enabled          ${makeinfo-no}"
6485 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6486 test -n "$random_seed" &&
6487     echo "random seed               ${random_seed}"
6488 echo
6489
6490 echo "Enabled programs:"
6491 print_enabled '' $PROGRAM_LIST | print_in_columns
6492 echo
6493
6494 echo "External libraries:"
6495 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_in_columns
6496 echo
6497
6498 echo "External libraries providing hardware acceleration:"
6499 print_enabled '' $HWACCEL_LIBRARY_LIST | print_in_columns
6500 echo
6501
6502 echo "Libraries:"
6503 print_enabled '' $LIBRARY_LIST | print_in_columns
6504 echo
6505
6506 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6507     echo "Enabled ${type}s:"
6508     eval list=\$$(toupper $type)_LIST
6509     print_enabled '_*' $list | print_in_columns
6510     echo
6511 done
6512
6513 license="LGPL version 2.1 or later"
6514 if enabled nonfree; then
6515     license="nonfree and unredistributable"
6516 elif enabled gplv3; then
6517     license="GPL version 3 or later"
6518 elif enabled lgplv3; then
6519     license="LGPL version 3 or later"
6520 elif enabled gpl; then
6521     license="GPL version 2 or later"
6522 fi
6523
6524 echo "License: $license"
6525
6526 echo "Creating config.mak, config.h, and doc/config.texi..."
6527
6528 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6529
6530 enabled stripping || strip="echo skipping strip"
6531
6532 config_files="$TMPH config.mak doc/config.texi"
6533
6534 cat > config.mak <<EOF
6535 # Automatically generated by configure - do not modify!
6536 ifndef FFMPEG_CONFIG_MAK
6537 FFMPEG_CONFIG_MAK=1
6538 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6539 prefix=$prefix
6540 LIBDIR=\$(DESTDIR)$libdir
6541 SHLIBDIR=\$(DESTDIR)$shlibdir
6542 INCDIR=\$(DESTDIR)$incdir
6543 BINDIR=\$(DESTDIR)$bindir
6544 DATADIR=\$(DESTDIR)$datadir
6545 DOCDIR=\$(DESTDIR)$docdir
6546 MANDIR=\$(DESTDIR)$mandir
6547 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6548 INSTALL_NAME_DIR=$install_name_dir
6549 SRC_PATH=$source_path
6550 SRC_LINK=$source_link
6551 ifndef MAIN_MAKEFILE
6552 SRC_PATH:=\$(SRC_PATH:.%=..%)
6553 endif
6554 CC_IDENT=$cc_ident
6555 ARCH=$arch
6556 INTRINSICS=$intrinsics
6557 CC=$cc
6558 CXX=$cxx
6559 AS=$as
6560 OBJCC=$objcc
6561 LD=$ld
6562 DEPCC=$dep_cc
6563 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6564 DEPAS=$as
6565 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6566 YASM=$yasmexe
6567 DEPYASM=$yasmexe
6568 AR=$ar
6569 ARFLAGS=$arflags
6570 AR_O=$ar_o
6571 RANLIB=$ranlib
6572 STRIP=$strip
6573 CP=cp -p
6574 LN_S=$ln_s
6575 CPPFLAGS=$CPPFLAGS
6576 CFLAGS=$CFLAGS
6577 CXXFLAGS=$CXXFLAGS
6578 OBJCFLAGS=$OBJCFLAGS
6579 ASFLAGS=$ASFLAGS
6580 AS_C=$AS_C
6581 AS_O=$AS_O
6582 OBJCC_C=$OBJCC_C
6583 OBJCC_E=$OBJCC_E
6584 OBJCC_O=$OBJCC_O
6585 CC_C=$CC_C
6586 CC_E=$CC_E
6587 CC_O=$CC_O
6588 CXX_C=$CXX_C
6589 CXX_O=$CXX_O
6590 LD_O=$LD_O
6591 LD_LIB=$LD_LIB
6592 LD_PATH=$LD_PATH
6593 DLLTOOL=$dlltool
6594 WINDRES=$windres
6595 DEPWINDRES=$dep_cc
6596 DOXYGEN=$doxygen
6597 LDFLAGS=$LDFLAGS
6598 LDEXEFLAGS=$LDEXEFLAGS
6599 LDLIBFLAGS=$LDLIBFLAGS
6600 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
6601 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
6602 YASMFLAGS=$YASMFLAGS
6603 BUILDSUF=$build_suffix
6604 PROGSSUF=$progs_suffix
6605 FULLNAME=$FULLNAME
6606 LIBPREF=$LIBPREF
6607 LIBSUF=$LIBSUF
6608 LIBNAME=$LIBNAME
6609 SLIBPREF=$SLIBPREF
6610 SLIBSUF=$SLIBSUF
6611 EXESUF=$EXESUF
6612 EXTRA_VERSION=$extra_version
6613 CCDEP=$CCDEP
6614 CXXDEP=$CXXDEP
6615 CCDEP_FLAGS=$CCDEP_FLAGS
6616 ASDEP=$ASDEP
6617 ASDEP_FLAGS=$ASDEP_FLAGS
6618 CC_DEPFLAGS=$CC_DEPFLAGS
6619 AS_DEPFLAGS=$AS_DEPFLAGS
6620 HOSTCC=$host_cc
6621 HOSTLD=$host_ld
6622 HOSTCFLAGS=$host_cflags
6623 HOSTCPPFLAGS=$host_cppflags
6624 HOSTEXESUF=$HOSTEXESUF
6625 HOSTLDFLAGS=$host_ldflags
6626 HOSTLIBS=$host_libs
6627 DEPHOSTCC=$host_cc
6628 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
6629 HOSTCCDEP=$HOSTCCDEP
6630 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
6631 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
6632 HOSTCC_C=$HOSTCC_C
6633 HOSTCC_O=$HOSTCC_O
6634 HOSTLD_O=$HOSTLD_O
6635 TARGET_EXEC=$target_exec $target_exec_args
6636 TARGET_PATH=$target_path
6637 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
6638 CFLAGS-ffplay=${sdl2_cflags}
6639 ZLIB=$($ldflags_filter -lz)
6640 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
6641 EXTRALIBS=$extralibs
6642 COMPAT_OBJS=$compat_objs
6643 EXEOBJS=$exeobjs
6644 INSTALL=$install
6645 LIBTARGET=${LIBTARGET}
6646 SLIBNAME=${SLIBNAME}
6647 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
6648 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
6649 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
6650 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
6651 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
6652 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
6653 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
6654 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
6655 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
6656 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
6657 NOREDZONE_FLAGS=$noredzone_flags
6658 EOF
6659
6660 get_version(){
6661     lcname=lib${1}
6662     name=$(toupper $lcname)
6663     file=$source_path/$lcname/version.h
6664     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
6665     enabled raise_major && eval ${name}_VERSION_MAJOR=$((${name}_VERSION_MAJOR+100))
6666     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
6667     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
6668     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
6669     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
6670 }
6671
6672 map 'get_version $v' $LIBRARY_LIST
6673
6674 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> config.mak' $LIBRARY_LIST
6675
6676 print_program_libs(){
6677     eval "program_libs=\$${1}_libs"
6678     eval echo "LIBS-${1}=${program_libs}" >> config.mak
6679 }
6680
6681 map 'print_program_libs $v' $PROGRAM_LIST
6682
6683 cat > $TMPH <<EOF
6684 /* Automatically generated by configure - do not modify! */
6685 #ifndef FFMPEG_CONFIG_H
6686 #define FFMPEG_CONFIG_H
6687 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
6688 #define FFMPEG_LICENSE "$(c_escape $license)"
6689 #define CONFIG_THIS_YEAR 2016
6690 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
6691 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
6692 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
6693 #define av_restrict $_restrict
6694 #define EXTERN_PREFIX "${extern_prefix}"
6695 #define EXTERN_ASM ${extern_prefix}
6696 #define BUILDSUF "$build_suffix"
6697 #define SLIBSUF "$SLIBSUF"
6698 #define HAVE_MMX2 HAVE_MMXEXT
6699 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
6700 EOF
6701
6702 test -n "$assert_level" &&
6703     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
6704
6705 test -n "$malloc_prefix" &&
6706     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
6707
6708 if enabled yasm; then
6709     append config_files $TMPASM
6710     printf '' >$TMPASM
6711 fi
6712
6713 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
6714
6715
6716 mkdir -p doc
6717 mkdir -p tests
6718 mkdir -p tests/api
6719 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
6720
6721 print_config ARCH_   "$config_files" $ARCH_LIST
6722 print_config HAVE_   "$config_files" $HAVE_LIST
6723 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
6724                                      $CONFIG_EXTRA      \
6725                                      $ALL_COMPONENTS    \
6726
6727 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
6728 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
6729
6730 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
6731 cp_if_changed $TMPH config.h
6732 touch .config
6733
6734 enabled yasm && cp_if_changed $TMPASM config.asm
6735
6736 cat > $TMPH <<EOF
6737 /* Generated by ffconf */
6738 #ifndef AVUTIL_AVCONFIG_H
6739 #define AVUTIL_AVCONFIG_H
6740 EOF
6741
6742 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
6743
6744 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
6745
6746 cp_if_changed $TMPH libavutil/avconfig.h
6747
6748 if test -n "$WARNINGS"; then
6749     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
6750     enabled fatal_warnings && exit 1
6751 fi
6752
6753 # generate the lists of enabled components
6754 print_enabled_components(){
6755     file=$1
6756     struct_name=$2
6757     name=$3
6758     shift 3
6759     echo "static const $struct_name *$name[] = {" > $TMPH
6760     for c in $*; do
6761         enabled $c && printf "    &ff_%s,\n" $c >> $TMPH
6762     done
6763     echo "    NULL };" >> $TMPH
6764     cp_if_changed $TMPH $file
6765 }
6766
6767 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
6768 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
6769
6770 # build pkg-config files
6771
6772 lib_version(){
6773     eval printf "\"lib${1}${build_suffix} >= \$LIB$(toupper ${1})_VERSION, \""
6774 }
6775
6776 pkgconfig_generate(){
6777     name=$1
6778     shortname=${name#lib}${build_suffix}
6779     comment=$2
6780     version=$3
6781     libs=$4
6782     requires=$(map 'lib_version $v' $(eval echo \$${name#lib}_deps))
6783     requires=${requires%, }
6784     enabled ${name#lib} || return 0
6785     mkdir -p $name
6786     cat <<EOF > $name/$name${build_suffix}.pc
6787 prefix=$prefix
6788 exec_prefix=\${prefix}
6789 libdir=$libdir
6790 includedir=$incdir
6791
6792 Name: $name
6793 Description: $comment
6794 Version: $version
6795 Requires: $(enabled shared || echo $requires)
6796 Requires.private: $(enabled shared && echo $requires)
6797 Conflicts:
6798 Libs: -L\${libdir} $(enabled rpath && echo "-Wl,-rpath,\${libdir}") -l${shortname} $(enabled shared || echo $libs)
6799 Libs.private: $(enabled shared && echo $libs)
6800 Cflags: -I\${includedir}
6801 EOF
6802
6803 mkdir -p doc/examples/pc-uninstalled
6804 includedir=${source_path}
6805 [ "$includedir" = . ] && includedir="\${pcfiledir}/../../.."
6806     cat <<EOF > doc/examples/pc-uninstalled/${name}-uninstalled.pc
6807 prefix=
6808 exec_prefix=
6809 libdir=\${pcfiledir}/../../../$name
6810 includedir=${includedir}
6811
6812 Name: $name
6813 Description: $comment
6814 Version: $version
6815 Requires: $requires
6816 Conflicts:
6817 Libs: -L\${libdir} -Wl,-rpath,\${libdir} -l${shortname} $(enabled shared || echo $libs)
6818 Cflags: -I\${includedir}
6819 EOF
6820 }
6821
6822 pkgconfig_generate libavutil     "FFmpeg utility library"               "$LIBAVUTIL_VERSION"     "$LIBRT $LIBM"
6823 pkgconfig_generate libavcodec    "FFmpeg codec library"                 "$LIBAVCODEC_VERSION"    "$extralibs"
6824 pkgconfig_generate libavformat   "FFmpeg container format library"      "$LIBAVFORMAT_VERSION"   "$extralibs"
6825 pkgconfig_generate libavdevice   "FFmpeg device handling library"       "$LIBAVDEVICE_VERSION"   "$extralibs"
6826 pkgconfig_generate libavfilter   "FFmpeg audio/video filtering library" "$LIBAVFILTER_VERSION"   "$extralibs"
6827 pkgconfig_generate libpostproc   "FFmpeg postprocessing library"        "$LIBPOSTPROC_VERSION"   ""
6828 pkgconfig_generate libavresample "Libav audio resampling library"       "$LIBAVRESAMPLE_VERSION" "$LIBM"
6829 pkgconfig_generate libswscale    "FFmpeg image rescaling library"       "$LIBSWSCALE_VERSION"    "$LIBM"
6830 pkgconfig_generate libswresample "FFmpeg audio resampling library"      "$LIBSWRESAMPLE_VERSION" "$LIBM $LIBSOXR"