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

   1 #!/bin/sh
   2 #
   3 # FFmpeg configure script
   4 #
   5 # Copyright (c) 2000-2002 Fabrice Bellard
   6 # Copyright (c) 2005-2008 Diego Biurrun
   7 # Copyright (c) 2005-2008 Mans Rullgard
   8 #
   9
  10 # Prevent locale nonsense from breaking basic text processing.
  11 LC_ALL=C
  12 export LC_ALL
  13
  14 # make sure we are running under a compatible shell
  15 # try to make this part work with most shells
  16
  17 try_exec(){
  18     echo "Trying shell $1"
  19     type "$1" > /dev/null 2>&1 && exec "$@"
  20 }
  21
  22 unset foo
  23 (: ${foo%%bar}) 2> /dev/null
  24 E1="$?"
  25
  26 (: ${foo?}) 2> /dev/null
  27 E2="$?"
  28
  29 if test "$E1" != 0 || test "$E2" = 0; then
  30     echo "Broken shell detected.  Trying alternatives."
  31     export FF_CONF_EXEC
  32     if test "0$FF_CONF_EXEC" -lt 1; then
  33         FF_CONF_EXEC=1
  34         try_exec bash "$0" "$@"
  35     fi
  36     if test "0$FF_CONF_EXEC" -lt 2; then
  37         FF_CONF_EXEC=2
  38         try_exec ksh "$0" "$@"
  39     fi
  40     if test "0$FF_CONF_EXEC" -lt 3; then
  41         FF_CONF_EXEC=3
  42         try_exec /usr/xpg4/bin/sh "$0" "$@"
  43     fi
  44     echo "No compatible shell script interpreter found."
  45     echo "This configure script requires a POSIX-compatible shell"
  46     echo "such as bash or ksh."
  47     echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
  48     echo "Instead, install a working POSIX-compatible shell."
  49     echo "Disabling this configure test will create a broken FFmpeg."
  50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
  51         echo "This bash version ($BASH_VERSION) is broken on your platform."
  52         echo "Upgrade to a later version if available."
  53     fi
  54     exit 1
  55 fi
  56
  57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
  58
  59 show_help(){
  60     cat <<EOF
  61 Usage: configure [options]
  62 Options: [defaults in brackets after descriptions]
  63
  64 Help options:
  65   --help                   print this message
  66   --list-decoders          show all available decoders
  67   --list-encoders          show all available encoders
  68   --list-hwaccels          show all available hardware accelerators
  69   --list-demuxers          show all available demuxers
  70   --list-muxers            show all available muxers
  71   --list-parsers           show all available parsers
  72   --list-protocols         show all available protocols
  73   --list-bsfs              show all available bitstream filters
  74   --list-indevs            show all available input devices
  75   --list-outdevs           show all available output devices
  76   --list-filters           show all available filters
  77
  78 Standard options:
  79   --logfile=FILE           log tests and output to FILE [config.log]
  80   --disable-logging        do not log configure debug information
  81   --fatal-warnings         fail if any configure warning is generated
  82   --prefix=PREFIX          install in PREFIX [$prefix]
  83   --bindir=DIR             install binaries in DIR [PREFIX/bin]
  84   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
  85   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
  86   --libdir=DIR             install libs in DIR [PREFIX/lib]
  87   --shlibdir=DIR           install shared libs in DIR [LIBDIR]
  88   --incdir=DIR             install includes in DIR [PREFIX/include]
  89   --mandir=DIR             install man page in DIR [PREFIX/share/man]
  90   --pkgconfigdir=DIR       install pkg-config files in DIR [LIBDIR/pkgconfig]
  91   --enable-rpath           use rpath to allow installing libraries in paths
  92                            not part of the dynamic linker search path
  93                            use rpath when linking programs [USE WITH CARE]
  94   --install-name-dir=DIR   Darwin directory name for installed targets
  95
  96 Licensing options:
  97   --enable-gpl             allow use of GPL code, the resulting libs
  98                            and binaries will be under GPL [no]
  99   --enable-version3        upgrade (L)GPL to version 3 [no]
 100   --enable-nonfree         allow use of nonfree code, the resulting libs
 101                            and binaries will be unredistributable [no]
 102
 103 Configuration options:
 104   --disable-static         do not build static libraries [no]
 105   --enable-shared          build shared libraries [no]
 106   --enable-small           optimize for size instead of speed
 107   --disable-runtime-cpudetect disable detecting cpu capabilities at runtime (smaller binary)
 108   --enable-gray            enable full grayscale support (slower color)
 109   --disable-swscale-alpha  disable alpha channel support in swscale
 110   --disable-all            disable building components, libraries and programs
 111   --enable-raise-major     increase major version numbers in sonames [no]
 112
 113 Program options:
 114   --disable-programs       do not build command line programs
 115   --disable-ffmpeg         disable ffmpeg build
 116   --disable-ffplay         disable ffplay build
 117   --disable-ffprobe        disable ffprobe build
 118   --disable-ffserver       disable ffserver build
 119
 120 Documentation options:
 121   --disable-doc            do not build documentation
 122   --disable-htmlpages      do not build HTML documentation pages
 123   --disable-manpages       do not build man documentation pages
 124   --disable-podpages       do not build POD documentation pages
 125   --disable-txtpages       do not build text documentation pages
 126
 127 Component options:
 128   --disable-avdevice       disable libavdevice build
 129   --disable-avcodec        disable libavcodec build
 130   --disable-avformat       disable libavformat build
 131   --disable-swresample     disable libswresample build
 132   --disable-swscale        disable libswscale build
 133   --disable-postproc       disable libpostproc build
 134   --disable-avfilter       disable libavfilter build
 135   --enable-avresample      enable libavresample build [no]
 136   --disable-pthreads       disable pthreads [autodetect]
 137   --disable-w32threads     disable Win32 threads [autodetect]
 138   --disable-os2threads     disable OS/2 threads [autodetect]
 139   --disable-network        disable network support [no]
 140   --disable-dct            disable DCT code
 141   --disable-dwt            disable DWT code
 142   --disable-error-resilience disable error resilience code
 143   --disable-lsp            disable LSP code
 144   --disable-lzo            disable LZO decoder code
 145   --disable-mdct           disable MDCT code
 146   --disable-rdft           disable RDFT code
 147   --disable-fft            disable FFT code
 148   --disable-faan           disable floating point AAN (I)DCT code
 149   --disable-pixelutils     disable pixel utils in libavutil
 150
 151 Individual component options:
 152   --disable-everything     disable all components listed below
 153   --disable-encoder=NAME   disable encoder NAME
 154   --enable-encoder=NAME    enable encoder NAME
 155   --disable-encoders       disable all encoders
 156   --disable-decoder=NAME   disable decoder NAME
 157   --enable-decoder=NAME    enable decoder NAME
 158   --disable-decoders       disable all decoders
 159   --disable-hwaccel=NAME   disable hwaccel NAME
 160   --enable-hwaccel=NAME    enable hwaccel NAME
 161   --disable-hwaccels       disable all hwaccels
 162   --disable-muxer=NAME     disable muxer NAME
 163   --enable-muxer=NAME      enable muxer NAME
 164   --disable-muxers         disable all muxers
 165   --disable-demuxer=NAME   disable demuxer NAME
 166   --enable-demuxer=NAME    enable demuxer NAME
 167   --disable-demuxers       disable all demuxers
 168   --enable-parser=NAME     enable parser NAME
 169   --disable-parser=NAME    disable parser NAME
 170   --disable-parsers        disable all parsers
 171   --enable-bsf=NAME        enable bitstream filter NAME
 172   --disable-bsf=NAME       disable bitstream filter NAME
 173   --disable-bsfs           disable all bitstream filters
 174   --enable-protocol=NAME   enable protocol NAME
 175   --disable-protocol=NAME  disable protocol NAME
 176   --disable-protocols      disable all protocols
 177   --enable-indev=NAME      enable input device NAME
 178   --disable-indev=NAME     disable input device NAME
 179   --disable-indevs         disable input devices
 180   --enable-outdev=NAME     enable output device NAME
 181   --disable-outdev=NAME    disable output device NAME
 182   --disable-outdevs        disable output devices
 183   --disable-devices        disable all devices
 184   --enable-filter=NAME     enable filter NAME
 185   --disable-filter=NAME    disable filter NAME
 186   --disable-filters        disable all filters
 187
 188 External library support:
 189
 190   Using any of the following switches will allow FFmpeg to link to the
 191   corresponding external library. All the components depending on that library
 192   will become enabled, if all their other dependencies are met and they are not
 193   explicitly disabled. E.g. --enable-libwavpack will enable linking to
 194   libwavpack and allow the libwavpack encoder to be built, unless it is
 195   specifically disabled with --disable-encoder=libwavpack.
 196
 197   Note that only the system libraries are auto-detected. All the other external
 198   libraries must be explicitly enabled.
 199
 200   Also note that the following help text describes the purpose of the libraries
 201   themselves, not all their features will necessarily be usable by FFmpeg.
 202
 203   --enable-avisynth        enable reading of AviSynth script files [no]
 204   --disable-bzlib          disable bzlib [autodetect]
 205   --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
 206   --enable-frei0r          enable frei0r video filtering [no]
 207   --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
 208                            if openssl, librtmp or gmp is not used [no]
 209   --enable-gmp             enable gmp, needed for rtmp(t)e support
 210                            if openssl or librtmp is not used [no]
 211   --enable-gnutls          enable gnutls, needed for https support
 212                            if openssl is not used [no]
 213   --disable-iconv          disable iconv [autodetect]
 214   --enable-jni             enable JNI support [no]
 215   --enable-ladspa          enable LADSPA audio filtering [no]
 216   --enable-libass          enable libass subtitles rendering,
 217                            needed for subtitles and ass filter [no]
 218   --enable-libbluray       enable BluRay reading using libbluray [no]
 219   --enable-libbs2b         enable bs2b DSP library [no]
 220   --enable-libcaca         enable textual display using libcaca [no]
 221   --enable-libcelt         enable CELT decoding via libcelt [no]
 222   --enable-libcdio         enable audio CD grabbing with libcdio [no]
 223   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 224                            and libraw1394 [no]
 225   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 226   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 227   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
 228   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
 229   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
 230   --enable-libgme          enable Game Music Emu via libgme [no]
 231   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 232   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 233   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 234   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
 235   --enable-libmodplug      enable ModPlug via libmodplug [no]
 236   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 237   --enable-libnut          enable NUT (de)muxing via libnut,
 238                            native (de)muxer exists [no]
 239   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 240   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 241   --enable-libopencv       enable video filtering via libopencv [no]
 242   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 243   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 244   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
 245   --enable-libopus         enable Opus de/encoding via libopus [no]
 246   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 247   --enable-librubberband   enable rubberband needed for rubberband filter [no]
 248   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 249   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
 250   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 251   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 252   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
 253   --enable-libsoxr         enable Include libsoxr resampling [no]
 254   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 255   --enable-libssh          enable SFTP protocol via libssh [no]
 256   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
 257   --enable-libtheora       enable Theora encoding via libtheora [no]
 258   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 259   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 260   --enable-libvidstab      enable video stabilization using vid.stab [no]
 261   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 262   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 263                            native implementation exists [no]
 264   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 265   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 266   --enable-libwebp         enable WebP encoding via libwebp [no]
 267   --enable-libx264         enable H.264 encoding via x264 [no]
 268   --enable-libx265         enable HEVC encoding via x265 [no]
 269   --enable-libxavs         enable AVS encoding via xavs [no]
 270   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
 271   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
 272   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
 273   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
 274   --enable-libxvid         enable Xvid encoding via xvidcore,
 275                            native MPEG-4/Xvid encoder exists [no]
 276   --enable-libzimg         enable z.lib, needed for zscale filter [no]
 277   --enable-libzmq          enable message passing via libzmq [no]
 278   --enable-libzvbi         enable teletext support via libzvbi [no]
 279   --disable-lzma           disable lzma [autodetect]
 280   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
 281   --enable-mediacodec      enable Android MediaCodec support [no]
 282   --enable-netcdf          enable NetCDF, needed for sofalizer filter [no]
 283   --enable-openal          enable OpenAL 1.1 capture support [no]
 284   --enable-opencl          enable OpenCL code
 285   --enable-opengl          enable OpenGL rendering [no]
 286   --enable-openssl         enable openssl, needed for https support
 287                            if gnutls is not used [no]
 288   --disable-schannel       disable SChannel SSP, needed for TLS support on
 289                            Windows if openssl and gnutls are not used [autodetect]
 290   --disable-sdl2           disable sdl2 [autodetect]
 291   --disable-securetransport disable Secure Transport, needed for TLS support
 292                            on OSX if openssl and gnutls are not used [autodetect]
 293   --enable-x11grab         enable X11 grabbing (legacy) [no]
 294   --disable-xlib           disable xlib [autodetect]
 295   --disable-zlib           disable zlib [autodetect]
 296
 297   The following libraries provide various hardware acceleration features:
 298   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
 299   --disable-cuda           disable dynamically linked Nvidia CUDA code [autodetect]
 300   --disable-cuvid          disable Nvidia CUVID support [autodetect]
 301   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
 302   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
 303   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
 304   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
 305   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
 306   --disable-nvenc          disable Nvidia video encoding code [autodetect]
 307   --enable-omx             enable OpenMAX IL code [no]
 308   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
 309   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
 310   --disable-vda            disable Apple Video Decode Acceleration code [autodetect]
 311   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
 312   --disable-videotoolbox   disable VideoToolbox code [autodetect]
 313
 314 Toolchain options:
 315   --arch=ARCH              select architecture [$arch]
 316   --cpu=CPU                select the minimum required CPU (affects
 317                            instruction selection, may crash on older CPUs)
 318   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 319   --progs-suffix=SUFFIX    program name suffix []
 320   --enable-cross-compile   assume a cross-compiler is used
 321   --sysroot=PATH           root of cross-build tree
 322   --sysinclude=PATH        location of cross-build system headers
 323   --target-os=OS           compiler targets OS [$target_os]
 324   --target-exec=CMD        command to run executables on target
 325   --target-path=DIR        path to view of build directory on target
 326   --target-samples=DIR     path to samples directory on target
 327   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 328   --toolchain=NAME         set tool defaults according to NAME
 329   --nm=NM                  use nm tool NM [$nm_default]
 330   --ar=AR                  use archive tool AR [$ar_default]
 331   --as=AS                  use assembler AS [$as_default]
 332   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
 333   --strip=STRIP            use strip tool STRIP [$strip_default]
 334   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 335   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
 336   --cc=CC                  use C compiler CC [$cc_default]
 337   --cxx=CXX                use C compiler CXX [$cxx_default]
 338   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 339   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 340   --ld=LD                  use linker LD [$ld_default]
 341   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 342   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 343   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 344   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 345   --host-cc=HOSTCC         use host C compiler HOSTCC
 346   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 347   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 348   --host-ld=HOSTLD         use host linker HOSTLD
 349   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 350   --host-libs=HLIBS        use libs HLIBS when linking for host
 351   --host-os=OS             compiler host OS [$target_os]
 352   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 353   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 354   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 355   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 356   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 357   --extra-ldlibflags=ELDFLAGS add ELDFLAGS to LDLIBFLAGS [$LDLIBFLAGS]
 358   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 359   --extra-version=STRING   version string suffix []
 360   --optflags=OPTFLAGS      override optimization-related compiler flags
 361   --build-suffix=SUFFIX    library name suffix []
 362   --enable-pic             build position-independent code
 363   --enable-thumb           compile for Thumb instruction set
 364   --enable-lto             use link-time optimization
 365   --env="ENV=override"     override the environment variables
 366
 367 Advanced options (experts only):
 368   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 369   --custom-allocator=NAME  use a supported custom allocator
 370   --disable-symver         disable symbol versioning
 371   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 372   --disable-safe-bitstream-reader
 373                            disable buffer boundary checking in bitreaders
 374                            (faster, but may crash)
 375   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
 376   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 377
 378 Optimization options (experts only):
 379   --disable-asm            disable all assembly optimizations
 380   --disable-altivec        disable AltiVec optimizations
 381   --disable-vsx            disable VSX optimizations
 382   --disable-power8         disable POWER8 optimizations
 383   --disable-amd3dnow       disable 3DNow! optimizations
 384   --disable-amd3dnowext    disable 3DNow! extended optimizations
 385   --disable-mmx            disable MMX optimizations
 386   --disable-mmxext         disable MMXEXT optimizations
 387   --disable-sse            disable SSE optimizations
 388   --disable-sse2           disable SSE2 optimizations
 389   --disable-sse3           disable SSE3 optimizations
 390   --disable-ssse3          disable SSSE3 optimizations
 391   --disable-sse4           disable SSE4 optimizations
 392   --disable-sse42          disable SSE4.2 optimizations
 393   --disable-avx            disable AVX optimizations
 394   --disable-xop            disable XOP optimizations
 395   --disable-fma3           disable FMA3 optimizations
 396   --disable-fma4           disable FMA4 optimizations
 397   --disable-avx2           disable AVX2 optimizations
 398   --disable-aesni          disable AESNI optimizations
 399   --disable-armv5te        disable armv5te optimizations
 400   --disable-armv6          disable armv6 optimizations
 401   --disable-armv6t2        disable armv6t2 optimizations
 402   --disable-vfp            disable VFP optimizations
 403   --disable-neon           disable NEON optimizations
 404   --disable-inline-asm     disable use of inline assembly
 405   --disable-yasm           disable use of nasm/yasm assembly
 406   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
 407   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 408   --disable-msa            disable MSA optimizations
 409   --disable-mipsfpu        disable floating point MIPS optimizations
 410   --disable-mmi            disable Loongson SIMD optimizations
 411   --disable-fast-unaligned consider unaligned accesses slow
 412
 413 Developer options (useful when working on FFmpeg itself):
 414   --disable-debug          disable debugging symbols
 415   --enable-debug=LEVEL     set the debug level [$debuglevel]
 416   --disable-optimizations  disable compiler optimizations
 417   --enable-extra-warnings  enable more compiler warnings
 418   --disable-stripping      disable stripping of executables and shared libraries
 419   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 420                            2 causes a slowdown at runtime.
 421   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 422   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 423                            leaks and errors, using the specified valgrind binary.
 424                            Cannot be combined with --target-exec
 425   --enable-ftrapv          Trap arithmetic overflows
 426   --samples=PATH           location of test samples for FATE, if not set use
 427                            \$FATE_SAMPLES at make invocation time.
 428   --enable-neon-clobber-test check NEON registers for clobbering (should be
 429                            used only for debugging purposes)
 430   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 431                            should be used only for debugging purposes)
 432   --enable-random          randomly enable/disable components
 433   --disable-random
 434   --enable-random=LIST     randomly enable/disable specific components or
 435   --disable-random=LIST    component groups. LIST is a comma-separated list
 436                            of NAME[:PROB] entries where NAME is a component
 437                            (group) and PROB the probability associated with
 438                            NAME (default 0.5).
 439   --random-seed=VALUE      seed value for --enable/disable-random
 440   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 441                            (only applies to --disable-optimizations builds)
 442
 443 NOTE: Object files are built at the place where configure is launched.
 444 EOF
 445   exit 0
 446 }
 447
 448 quotes='""'
 449 if test -t 1 && which tput >/dev/null 2>&1; then
 450     ncolors=$(tput colors)
 451     if test -n "$ncolors" && test $ncolors -ge 8; then
 452         bold_color=$(tput bold)
 453         warn_color=$(tput setaf 3)
 454         error_color=$(tput setaf 1)
 455         reset_color=$(tput sgr0)
 456     fi
 457     # 72 used instead of 80 since that's the default of pr
 458     ncols=$(tput cols)
 459 fi
 460 : ${ncols:=72}
 461
 462 log(){
 463     echo "$@" >> $logfile
 464 }
 465
 466 log_file(){
 467     log BEGIN $1
 468     pr -n -t $1 >> $logfile
 469     log END $1
 470 }
 471
 472 warn(){
 473     log "WARNING: $*"
 474     WARNINGS="${WARNINGS}WARNING: $*\n"
 475 }
 476
 477 die(){
 478     log "$@"
 479     echo "$error_color$bold_color$@$reset_color"
 480     cat <<EOF
 481
 482 If you think configure made a mistake, make sure you are using the latest
 483 version from Git.  If the latest version fails, report the problem to the
 484 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 485 EOF
 486     if disabled logging; then
 487         cat <<EOF
 488 Rerun configure with logging enabled (do not use --disable-logging), and
 489 include the log this produces with your report.
 490 EOF
 491     else
 492         cat <<EOF
 493 Include the log file "$logfile" produced by configure as this will help
 494 solve the problem.
 495 EOF
 496     fi
 497     exit 1
 498 }
 499
 500 # Avoid locale weirdness, besides we really just want to translate ASCII.
 501 toupper(){
 502     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 503 }
 504
 505 tolower(){
 506     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 507 }
 508
 509 c_escape(){
 510     echo "$*" | sed 's/["\\]/\\\0/g'
 511 }
 512
 513 sh_quote(){
 514     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 515     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 516     echo "$v"
 517 }
 518
 519 cleanws(){
 520     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 521 }
 522
 523 filter(){
 524     pat=$1
 525     shift
 526     for v; do
 527         eval "case $v in $pat) echo $v ;; esac"
 528     done
 529 }
 530
 531 filter_out(){
 532     pat=$1
 533     shift
 534     for v; do
 535         eval "case $v in $pat) ;; *) echo $v ;; esac"
 536     done
 537 }
 538
 539 map(){
 540     m=$1
 541     shift
 542     for v; do eval $m; done
 543 }
 544
 545 add_suffix(){
 546     suffix=$1
 547     shift
 548     for v; do echo ${v}${suffix}; done
 549 }
 550
 551 set_all(){
 552     value=$1
 553     shift
 554     for var in $*; do
 555         eval $var=$value
 556     done
 557 }
 558
 559 set_weak(){
 560     value=$1
 561     shift
 562     for var; do
 563         eval : \${$var:=$value}
 564     done
 565 }
 566
 567 sanitize_var_name(){
 568     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 569 }
 570
 571 set_safe(){
 572     var=$1
 573     shift
 574     eval $(sanitize_var_name "$var")='$*'
 575 }
 576
 577 get_safe(){
 578     eval echo \$$(sanitize_var_name "$1")
 579 }
 580
 581 pushvar(){
 582     for pvar in $*; do
 583         eval level=\${${pvar}_level:=0}
 584         eval ${pvar}_${level}="\$$pvar"
 585         eval ${pvar}_level=$(($level+1))
 586     done
 587 }
 588
 589 popvar(){
 590     for pvar in $*; do
 591         eval level=\${${pvar}_level:-0}
 592         test $level = 0 && continue
 593         eval level=$(($level-1))
 594         eval $pvar="\${${pvar}_${level}}"
 595         eval ${pvar}_level=$level
 596         eval unset ${pvar}_${level}
 597     done
 598 }
 599
 600 request(){
 601     for var in $*; do
 602         eval ${var}_requested=yes
 603         eval $var=
 604     done
 605 }
 606
 607 enable(){
 608     set_all yes $*
 609 }
 610
 611 disable(){
 612     set_all no $*
 613 }
 614
 615 enable_weak(){
 616     set_weak yes $*
 617 }
 618
 619 disable_weak(){
 620     set_weak no $*
 621 }
 622
 623 enable_safe(){
 624     for var; do
 625         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 626     done
 627 }
 628
 629 disable_safe(){
 630     for var; do
 631         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 632     done
 633 }
 634
 635 do_enable_deep(){
 636     for var; do
 637         enabled $var && continue
 638         eval sel="\$${var}_select"
 639         eval sgs="\$${var}_suggest"
 640         pushvar var sgs
 641         enable_deep $sel
 642         popvar sgs
 643         enable_deep_weak $sgs
 644         popvar var
 645     done
 646 }
 647
 648 enable_deep(){
 649     do_enable_deep $*
 650     enable $*
 651 }
 652
 653 enable_deep_weak(){
 654     for var; do
 655         disabled $var && continue
 656         pushvar var
 657         do_enable_deep $var
 658         popvar var
 659         enable_weak $var
 660     done
 661 }
 662
 663 requested(){
 664     test "${1#!}" = "$1" && op='=' || op=!=
 665     eval test "x\$${1#!}_requested" $op "xyes"
 666 }
 667
 668 enabled(){
 669     test "${1#!}" = "$1" && op='=' || op=!=
 670     eval test "x\$${1#!}" $op "xyes"
 671 }
 672
 673 disabled(){
 674     test "${1#!}" = "$1" && op='=' || op=!=
 675     eval test "x\$${1#!}" $op "xno"
 676 }
 677
 678 enabled_all(){
 679     for opt; do
 680         enabled $opt || return 1
 681     done
 682 }
 683
 684 disabled_all(){
 685     for opt; do
 686         disabled $opt || return 1
 687     done
 688 }
 689
 690 enabled_any(){
 691     for opt; do
 692         enabled $opt && return 0
 693     done
 694 }
 695
 696 disabled_any(){
 697     for opt; do
 698         disabled $opt && return 0
 699     done
 700     return 1
 701 }
 702
 703 set_default(){
 704     for opt; do
 705         eval : \${$opt:=\$${opt}_default}
 706     done
 707 }
 708
 709 is_in(){
 710     value=$1
 711     shift
 712     for var in $*; do
 713         [ $var = $value ] && return 0
 714     done
 715     return 1
 716 }
 717
 718 do_check_deps(){
 719     for cfg; do
 720         cfg="${cfg#!}"
 721         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 722         disabled ${cfg}_checking && continue
 723         enable ${cfg}_checking
 724         append allopts $cfg
 725
 726         eval dep_all="\$${cfg}_deps"
 727         eval dep_any="\$${cfg}_deps_any"
 728         eval dep_sel="\$${cfg}_select"
 729         eval dep_sgs="\$${cfg}_suggest"
 730         eval dep_ifa="\$${cfg}_if"
 731         eval dep_ifn="\$${cfg}_if_any"
 732
 733         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 734         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
 735         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 736
 737         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 738         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 739         enabled_all  $dep_all || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not all dependencies are satisfied: $dep_all"; }
 740         enabled_any  $dep_any || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not any dependency is satisfied: $dep_any"; }
 741         disabled_any $dep_sel && { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some selected dependency is unsatisfied: $dep_sel"; }
 742
 743         if enabled $cfg; then
 744             enable_deep $dep_sel
 745             enable_deep_weak $dep_sgs
 746         fi
 747
 748         disable ${cfg}_checking
 749     done
 750 }
 751
 752 check_deps(){
 753     unset allopts
 754
 755     do_check_deps "$@"
 756
 757     for cfg in $allopts; do
 758         enabled $cfg || continue
 759         eval dep_extralibs="\$${cfg}_extralibs"
 760         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
 761     done
 762 }
 763
 764 print_config(){
 765     pfx=$1
 766     files=$2
 767     shift 2
 768     map 'eval echo "$v \${$v:-no}"' "$@" |
 769     awk "BEGIN { split(\"$files\", files) }
 770         {
 771             c = \"$pfx\" toupper(\$1);
 772             v = \$2;
 773             sub(/yes/, 1, v);
 774             sub(/no/,  0, v);
 775             for (f in files) {
 776                 file = files[f];
 777                 if (file ~ /\\.h\$/) {
 778                     printf(\"#define %s %d\\n\", c, v) >>file;
 779                 } else if (file ~ /\\.asm\$/) {
 780                     printf(\"%%define %s %d\\n\", c, v) >>file;
 781                 } else if (file ~ /\\.mak\$/) {
 782                     n = -v ? \"\" : \"!\";
 783                     printf(\"%s%s=yes\\n\", n, c) >>file;
 784                 } else if (file ~ /\\.texi\$/) {
 785                     pre = -v ? \"\" : \"@c \";
 786                     yesno = \$2;
 787                     c2 = tolower(c);
 788                     gsub(/_/, \"-\", c2);
 789                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 790                 }
 791             }
 792         }"
 793 }
 794
 795 print_enabled(){
 796     suf=$1
 797     shift
 798     for v; do
 799         enabled $v && printf "%s\n" ${v%$suf}
 800     done
 801 }
 802
 803 append(){
 804     var=$1
 805     shift
 806     eval "$var=\"\$$var $*\""
 807 }
 808
 809 prepend(){
 810     var=$1
 811     shift
 812     eval "$var=\"$* \$$var\""
 813 }
 814
 815 unique(){
 816     var=$1
 817     uniq_list=""
 818     for tok in $(eval echo \$$var); do
 819         uniq_list="$(filter_out $tok $uniq_list) $tok"
 820     done
 821     eval "$var=\"${uniq_list}\""
 822 }
 823
 824 add_cppflags(){
 825     append CPPFLAGS "$@"
 826 }
 827
 828 add_cflags(){
 829     append CFLAGS $($cflags_filter "$@")
 830 }
 831
 832 add_cxxflags(){
 833     append CXXFLAGS $($cflags_filter "$@")
 834 }
 835
 836 add_asflags(){
 837     append ASFLAGS $($asflags_filter "$@")
 838 }
 839
 840 add_objcflags(){
 841     append OBJCFLAGS $($objcflags_filter "$@")
 842 }
 843
 844 add_ldflags(){
 845     append LDFLAGS $($ldflags_filter "$@")
 846 }
 847
 848 add_ldexeflags(){
 849     append LDEXEFLAGS $($ldflags_filter "$@")
 850 }
 851
 852 add_ldlibflags(){
 853     append LDLIBFLAGS $($ldflags_filter "$@")
 854 }
 855
 856 add_stripflags(){
 857     append ASMSTRIPFLAGS "$@"
 858 }
 859
 860 add_extralibs(){
 861     prepend extralibs $($ldflags_filter "$@")
 862 }
 863
 864 add_host_cppflags(){
 865     append host_cppflags "$@"
 866 }
 867
 868 add_host_cflags(){
 869     append host_cflags $($host_cflags_filter "$@")
 870 }
 871
 872 add_host_ldflags(){
 873     append host_ldflags $($host_ldflags_filter "$@")
 874 }
 875
 876 add_compat(){
 877     append compat_objs $1
 878     shift
 879     map 'add_cppflags -D$v' "$@"
 880 }
 881
 882 check_cmd(){
 883     log "$@"
 884     "$@" >> $logfile 2>&1
 885 }
 886
 887 check_stat(){
 888     log check_stat "$@"
 889     stat "$1" >> $logfile 2>&1
 890 }
 891
 892 cc_o(){
 893     eval printf '%s\\n' $CC_O
 894 }
 895
 896 cc_e(){
 897     eval printf '%s\\n' $CC_E
 898 }
 899
 900 check_cc(){
 901     log check_cc "$@"
 902     cat > $TMPC
 903     log_file $TMPC
 904     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 905 }
 906
 907 check_cxx(){
 908     log check_cxx "$@"
 909     cat > $TMPCPP
 910     log_file $TMPCPP
 911     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 912 }
 913
 914 check_objcc(){
 915     log check_objcc "$@"
 916     cat > $TMPM
 917     log_file $TMPM
 918     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
 919 }
 920
 921 check_cpp(){
 922     log check_cpp "$@"
 923     cat > $TMPC
 924     log_file $TMPC
 925     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 926 }
 927
 928 as_o(){
 929     eval printf '%s\\n' $AS_O
 930 }
 931
 932 check_as(){
 933     log check_as "$@"
 934     cat > $TMPS
 935     log_file $TMPS
 936     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 937 }
 938
 939 check_inline_asm(){
 940     log check_inline_asm "$@"
 941     name="$1"
 942     code="$2"
 943     shift 2
 944     disable $name
 945     check_cc "$@" <<EOF && enable $name
 946 void foo(void){ __asm__ volatile($code); }
 947 EOF
 948 }
 949
 950 check_inline_asm_flags(){
 951     log check_inline_asm_flags "$@"
 952     name="$1"
 953     code="$2"
 954     flags=''
 955     shift 2
 956     while [ "$1" != "" ]; do
 957       append flags $1
 958       shift
 959     done;
 960     disable $name
 961     cat > $TMPC <<EOF
 962 void foo(void){ __asm__ volatile($code); }
 963 EOF
 964     log_file $TMPC
 965     check_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
 966     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
 967 }
 968
 969 check_insn(){
 970     log check_insn "$@"
 971     check_inline_asm ${1}_inline "\"$2\""
 972     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 973 }
 974
 975 check_yasm(){
 976     log check_yasm "$@"
 977     echo "$1" > $TMPS
 978     log_file $TMPS
 979     shift 1
 980     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
 981 }
 982
 983 ld_o(){
 984     eval printf '%s\\n' $LD_O
 985 }
 986
 987 check_ld(){
 988     log check_ld "$@"
 989     type=$1
 990     shift 1
 991     flags=$(filter_out '-l*|*.so' $@)
 992     libs=$(filter '-l*|*.so' $@)
 993     check_$type $($cflags_filter $flags) || return
 994     flags=$($ldflags_filter $flags)
 995     libs=$($ldflags_filter $libs)
 996     check_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
 997 }
 998
 999 print_include(){
1000     hdr=$1
1001     test "${hdr%.h}" = "${hdr}" &&
1002         echo "#include $hdr"    ||
1003         echo "#include <$hdr>"
1004 }
1005
1006 check_code(){
1007     log check_code "$@"
1008     check=$1
1009     headers=$2
1010     code=$3
1011     shift 3
1012     {
1013         for hdr in $headers; do
1014             print_include $hdr
1015         done
1016         echo "int main(void) { $code; return 0; }"
1017     } | check_$check "$@"
1018 }
1019
1020 check_cppflags(){
1021     log check_cppflags "$@"
1022     check_cc "$@" <<EOF && append CPPFLAGS "$@"
1023 int x;
1024 EOF
1025 }
1026
1027 test_cflags(){
1028     log test_cflags "$@"
1029     set -- $($cflags_filter "$@")
1030     check_cc "$@" <<EOF
1031 int x;
1032 EOF
1033 }
1034
1035 check_cflags(){
1036     log check_cflags "$@"
1037     test_cflags "$@" && add_cflags "$@"
1038 }
1039
1040 check_cxxflags(){
1041     log check_cxxflags "$@"
1042     set -- $($cflags_filter "$@")
1043     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
1044 int x;
1045 EOF
1046 }
1047
1048 test_objcflags(){
1049     log test_cflags "$@"
1050     set -- $($cflags_filter "$@")
1051     check_objcc "$@" <<EOF
1052 int x;
1053 EOF
1054 }
1055
1056 check_objcflags(){
1057     log check_cflags "$@"
1058     test_objcflags "$@" && add_objcflags "$@"
1059 }
1060
1061 test_ldflags(){
1062     log test_ldflags "$@"
1063     check_ld "cc" "$@" <<EOF
1064 int main(void){ return 0; }
1065 EOF
1066 }
1067
1068 check_ldflags(){
1069     log check_ldflags "$@"
1070     test_ldflags "$@" && add_ldflags "$@"
1071 }
1072
1073 test_stripflags(){
1074     log test_stripflags "$@"
1075     # call check_cc to get a fresh TMPO
1076     check_cc <<EOF
1077 int main(void) { return 0; }
1078 EOF
1079     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1080 }
1081
1082 check_stripflags(){
1083     log check_stripflags "$@"
1084     test_stripflags "$@" && add_stripflags "$@"
1085 }
1086
1087 check_header(){
1088     log check_header "$@"
1089     header=$1
1090     shift
1091     disable_safe $header
1092     check_cpp "$@" <<EOF && enable_safe $header
1093 #include <$header>
1094 int x;
1095 EOF
1096 }
1097
1098 check_header_objcc(){
1099     log check_header_objcc "$@"
1100     rm -f -- "$TMPO"
1101     header=$1
1102     shift
1103     disable_safe $header
1104     {
1105        echo "#include <$header>"
1106        echo "int main(void) { return 0; }"
1107     } | check_objcc && check_stat "$TMPO" && enable_safe $headers
1108 }
1109
1110 check_func(){
1111     log check_func "$@"
1112     func=$1
1113     shift
1114     disable $func
1115     check_ld "cc" "$@" <<EOF && enable $func
1116 extern int $func();
1117 int main(void){ $func(); }
1118 EOF
1119 }
1120
1121 check_complexfunc(){
1122     log check_complexfunc "$@"
1123     func=$1
1124     narg=$2
1125     shift 2
1126     test $narg = 2 && args="f, g" || args="f * I"
1127     disable $func
1128     check_ld "cc" "$@" <<EOF && enable $func
1129 #include <complex.h>
1130 #include <math.h>
1131 float foo(complex float f, complex float g) { return $func($args); }
1132 int main(void){ return (int) foo; }
1133 EOF
1134 }
1135
1136 check_mathfunc(){
1137     log check_mathfunc "$@"
1138     func=$1
1139     narg=$2
1140     shift 2
1141     test $narg = 2 && args="f, g" || args="f"
1142     disable $func
1143     check_ld "cc" "$@" <<EOF && enable $func
1144 #include <math.h>
1145 float foo(float f, float g) { return $func($args); }
1146 int main(void){ return (int) foo; }
1147 EOF
1148 }
1149
1150 check_func_headers(){
1151     log check_func_headers "$@"
1152     headers=$1
1153     funcs=$2
1154     shift 2
1155     {
1156         for hdr in $headers; do
1157             print_include $hdr
1158         done
1159         echo "#include <stdint.h>"
1160         for func in $funcs; do
1161             echo "long check_$func(void) { return (long) $func; }"
1162         done
1163         echo "int main(void) { int ret = 0;"
1164         # LTO could optimize out the test functions without this
1165         for func in $funcs; do
1166             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1167         done
1168         echo "return ret; }"
1169     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1170 }
1171
1172 check_class_headers_cpp(){
1173     log check_class_headers_cpp "$@"
1174     headers=$1
1175     classes=$2
1176     shift 2
1177     {
1178         for hdr in $headers; do
1179             echo "#include <$hdr>"
1180         done
1181         echo "int main(void) { "
1182         i=1
1183         for class in $classes; do
1184             echo "$class obj$i;"
1185             i=$(expr $i + 1)
1186         done
1187         echo "return 0; }"
1188     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1189 }
1190
1191 check_cpp_condition(){
1192     log check_cpp_condition "$@"
1193     header=$1
1194     condition=$2
1195     shift 2
1196     check_cpp "$@" <<EOF
1197 #include <$header>
1198 #if !($condition)
1199 #error "unsatisfied condition: $condition"
1200 #endif
1201 EOF
1202 }
1203
1204 test_cflags_cc(){
1205     log test_cflags_cc "$@"
1206     flags=$1
1207     header=$2
1208     condition=$3
1209     shift 3
1210     set -- $($cflags_filter "$flags")
1211     check_cc "$@" <<EOF
1212 #include <$header>
1213 #if !($condition)
1214 #error "unsatisfied condition: $condition"
1215 #endif
1216 EOF
1217 }
1218
1219 check_lib(){
1220     log check_lib "$@"
1221     header="$1"
1222     func="$2"
1223     shift 2
1224     check_header $header && check_func $func "$@" && add_extralibs "$@"
1225 }
1226
1227 check_lib2(){
1228     log check_lib2 "$@"
1229     headers="$1"
1230     funcs="$2"
1231     shift 2
1232     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1233 }
1234
1235 check_lib_cpp(){
1236     log check_lib_cpp "$@"
1237     headers="$1"
1238     classes="$2"
1239     shift 2
1240     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1241 }
1242
1243 check_pkg_config(){
1244     log check_pkg_config "$@"
1245     pkgandversion="$1"
1246     pkg="${1%% *}"
1247     headers="$2"
1248     funcs="$3"
1249     shift 3
1250     check_cmd $pkg_config --exists --print-errors $pkgandversion || return
1251     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1252     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1253     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1254         set_safe "${pkg}_cflags" $pkg_cflags   &&
1255         set_safe "${pkg}_libs"   $pkg_libs
1256 }
1257
1258 check_exec(){
1259     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1260 }
1261
1262 check_exec_crash(){
1263     code=$(cat)
1264
1265     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1266     # are safe but may not be available everywhere.  Thus we use
1267     # raise(SIGTERM) instead.  The check is run in a subshell so we
1268     # can redirect the "Terminated" message from the shell.  SIGBUS
1269     # is not defined by standard C so it is used conditionally.
1270
1271     (check_exec "$@") >> $logfile 2>&1 <<EOF
1272 #include <signal.h>
1273 static void sighandler(int sig){
1274     raise(SIGTERM);
1275 }
1276 int foo(void){
1277     $code
1278 }
1279 int (*func_ptr)(void) = foo;
1280 int main(void){
1281     signal(SIGILL, sighandler);
1282     signal(SIGFPE, sighandler);
1283     signal(SIGSEGV, sighandler);
1284 #ifdef SIGBUS
1285     signal(SIGBUS, sighandler);
1286 #endif
1287     return func_ptr();
1288 }
1289 EOF
1290 }
1291
1292 check_type(){
1293     log check_type "$@"
1294     headers=$1
1295     type=$2
1296     shift 2
1297     disable_safe "$type"
1298     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1299 }
1300
1301 check_struct(){
1302     log check_struct "$@"
1303     headers=$1
1304     struct=$2
1305     member=$3
1306     shift 3
1307     disable_safe "${struct}_${member}"
1308     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1309         enable_safe "${struct}_${member}"
1310 }
1311
1312 check_builtin(){
1313     log check_builtin "$@"
1314     name=$1
1315     headers=$2
1316     builtin=$3
1317     shift 3
1318     disable "$name"
1319     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1320 }
1321
1322 check_compile_assert(){
1323     log check_compile_assert "$@"
1324     name=$1
1325     headers=$2
1326     condition=$3
1327     shift 3
1328     disable "$name"
1329     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1330 }
1331
1332 require(){
1333     name="$1"
1334     header="$2"
1335     func="$3"
1336     shift 3
1337     check_lib $header $func "$@" || die "ERROR: $name not found"
1338 }
1339
1340 require2(){
1341     name="$1"
1342     headers="$2"
1343     func="$3"
1344     shift 3
1345     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1346 }
1347
1348 require_cpp(){
1349     name="$1"
1350     headers="$2"
1351     classes="$3"
1352     shift 3
1353     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1354 }
1355
1356 use_pkg_config(){
1357     pkg="$1"
1358     check_pkg_config "$@" || return 1
1359     add_cflags    $(get_safe "${pkg}_cflags")
1360     add_extralibs $(get_safe "${pkg}_libs")
1361 }
1362
1363 require_pkg_config(){
1364     use_pkg_config "$@" || die "ERROR: $pkg not found using pkg-config$pkg_config_fail_message"
1365 }
1366
1367 require_libfreetype(){
1368     log require_libfreetype "$@"
1369     pkg="freetype2"
1370     check_cmd $pkg_config --exists --print-errors $pkg \
1371       || die "ERROR: $pkg not found"
1372     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1373     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1374     {
1375         echo "#include <ft2build.h>"
1376         echo "#include FT_FREETYPE_H"
1377         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1378         echo "int main(void) { return 0; }"
1379     } | check_ld "cc" $pkg_cflags $pkg_libs \
1380       && set_safe "${pkg}_cflags" $pkg_cflags \
1381       && set_safe "${pkg}_libs"   $pkg_libs \
1382       || die "ERROR: $pkg not found"
1383     add_cflags    $(get_safe "${pkg}_cflags")
1384     add_extralibs $(get_safe "${pkg}_libs")
1385 }
1386
1387 hostcc_e(){
1388     eval printf '%s\\n' $HOSTCC_E
1389 }
1390
1391 hostcc_o(){
1392     eval printf '%s\\n' $HOSTCC_O
1393 }
1394
1395 check_host_cc(){
1396     log check_host_cc "$@"
1397     cat > $TMPC
1398     log_file $TMPC
1399     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1400 }
1401
1402 check_host_cpp(){
1403     log check_host_cpp "$@"
1404     cat > $TMPC
1405     log_file $TMPC
1406     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1407 }
1408
1409 check_host_cppflags(){
1410     log check_host_cppflags "$@"
1411     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1412 int x;
1413 EOF
1414 }
1415
1416 check_host_cflags(){
1417     log check_host_cflags "$@"
1418     set -- $($host_cflags_filter "$@")
1419     check_host_cc "$@" <<EOF && append host_cflags "$@"
1420 int x;
1421 EOF
1422 }
1423
1424 check_host_cpp_condition(){
1425     log check_host_cpp_condition "$@"
1426     header=$1
1427     condition=$2
1428     shift 2
1429     check_host_cpp "$@" <<EOF
1430 #include <$header>
1431 #if !($condition)
1432 #error "unsatisfied condition: $condition"
1433 #endif
1434 EOF
1435 }
1436
1437 cp_if_changed(){
1438     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1439     mkdir -p "$(dirname $2)"
1440     $cp_f "$1" "$2"
1441 }
1442
1443 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1444 # system-dependent things.
1445
1446 AVCODEC_COMPONENTS="
1447     bsfs
1448     decoders
1449     encoders
1450     hwaccels
1451     parsers
1452 "
1453
1454 AVDEVICE_COMPONENTS="
1455     indevs
1456     outdevs
1457 "
1458 AVFILTER_COMPONENTS="
1459     filters
1460 "
1461 AVFORMAT_COMPONENTS="
1462     demuxers
1463     muxers
1464     protocols
1465 "
1466
1467 AVRESAMPLE_COMPONENTS=""
1468 AVUTIL_COMPONENTS=""
1469
1470 COMPONENT_LIST="
1471     $AVCODEC_COMPONENTS
1472     $AVDEVICE_COMPONENTS
1473     $AVFILTER_COMPONENTS
1474     $AVFORMAT_COMPONENTS
1475     $AVRESAMPLE_COMPONENTS
1476     $AVUTIL_COMPONENTS
1477 "
1478
1479 EXAMPLE_LIST="
1480     avio_dir_cmd_example
1481     avio_reading_example
1482     decoding_encoding_example
1483     demuxing_decoding_example
1484     extract_mvs_example
1485     filter_audio_example
1486     filtering_audio_example
1487     filtering_video_example
1488     http_multiclient_example
1489     metadata_example
1490     muxing_example
1491     qsvdec_example
1492     remuxing_example
1493     resampling_audio_example
1494     scaling_video_example
1495     transcode_aac_example
1496     transcoding_example
1497 "
1498 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1499     bzlib
1500     iconv
1501     libxcb
1502     libxcb_shm
1503     libxcb_shape
1504     libxcb_xfixes
1505     lzma
1506     schannel
1507     sdl
1508     sdl2
1509     securetransport
1510     xlib
1511     zlib
1512 "
1513
1514 EXTERNAL_LIBRARY_LIST="
1515     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1516     avisynth
1517     chromaprint
1518     crystalhd
1519     decklink
1520     frei0r
1521     gcrypt
1522     gmp
1523     gnutls
1524     jni
1525     ladspa
1526     libass
1527     libbluray
1528     libbs2b
1529     libcaca
1530     libcdio
1531     libcelt
1532     libdc1394
1533     libfdk_aac
1534     libflite
1535     libfontconfig
1536     libfreetype
1537     libfribidi
1538     libgme
1539     libgsm
1540     libiec61883
1541     libilbc
1542     libkvazaar
1543     libmodplug
1544     libmp3lame
1545     libnut
1546     libopencore_amrnb
1547     libopencore_amrwb
1548     libopencv
1549     libopenh264
1550     libopenjpeg
1551     libopenmpt
1552     libopus
1553     libpulse
1554     librtmp
1555     librubberband
1556     libschroedinger
1557     libshine
1558     libsmbclient
1559     libsnappy
1560     libsoxr
1561     libspeex
1562     libssh
1563     libtesseract
1564     libtheora
1565     libtwolame
1566     libv4l2
1567     libvidstab
1568     libvo_amrwbenc
1569     libvorbis
1570     libvpx
1571     libwavpack
1572     libwebp
1573     libx264
1574     libx265
1575     libxavs
1576     libxvid
1577     libzimg
1578     libzmq
1579     libzvbi
1580     mediacodec
1581     netcdf
1582     openal
1583     opencl
1584     opengl
1585     openssl
1586     videotoolbox
1587     x11grab
1588 "
1589 HWACCEL_AUTODETECT_LIBRARY_LIST="
1590     audiotoolbox
1591     cuda
1592     cuvid
1593     d3d11va
1594     dxva2
1595     nvenc
1596     vaapi
1597     vda
1598     vdpau
1599     videotoolbox_hwaccel
1600     xvmc
1601 "
1602
1603 HWACCEL_LIBRARY_LIST="
1604     $HWACCEL_AUTODETECT_LIBRARY_LIST
1605     libmfx
1606     libnpp
1607     mmal
1608     omx
1609 "
1610
1611 DOCUMENT_LIST="
1612     doc
1613     htmlpages
1614     manpages
1615     podpages
1616     txtpages
1617 "
1618
1619 FEATURE_LIST="
1620     ftrapv
1621     gray
1622     hardcoded_tables
1623     omx_rpi
1624     runtime_cpudetect
1625     safe_bitstream_reader
1626     shared
1627     small
1628     static
1629     swscale_alpha
1630 "
1631
1632 LIBRARY_LIST="
1633     avcodec
1634     avdevice
1635     avfilter
1636     avformat
1637     avresample
1638     avutil
1639     postproc
1640     swresample
1641     swscale
1642 "
1643
1644 LICENSE_LIST="
1645     gpl
1646     nonfree
1647     version3
1648 "
1649
1650 PROGRAM_LIST="
1651     ffplay
1652     ffprobe
1653     ffserver
1654     ffmpeg
1655 "
1656
1657 SUBSYSTEM_LIST="
1658     dct
1659     dwt
1660     error_resilience
1661     faan
1662     fast_unaligned
1663     fft
1664     lsp
1665     lzo
1666     mdct
1667     pixelutils
1668     network
1669     rdft
1670 "
1671
1672 CONFIG_LIST="
1673     $COMPONENT_LIST
1674     $DOCUMENT_LIST
1675     $EXAMPLE_LIST
1676     $EXTERNAL_LIBRARY_LIST
1677     $HWACCEL_LIBRARY_LIST
1678     $FEATURE_LIST
1679     $LICENSE_LIST
1680     $LIBRARY_LIST
1681     $PROGRAM_LIST
1682     $SUBSYSTEM_LIST
1683     fontconfig
1684     memalign_hack
1685     memory_poisoning
1686     neon_clobber_test
1687     pic
1688     pod2man
1689     raise_major
1690     thumb
1691     valgrind_backtrace
1692     xmm_clobber_test
1693 "
1694
1695 THREADS_LIST="
1696     pthreads
1697     os2threads
1698     w32threads
1699 "
1700
1701 ATOMICS_LIST="
1702     atomics_gcc
1703     atomics_suncc
1704     atomics_win32
1705 "
1706
1707 AUTODETECT_LIBS="
1708     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1709     $HWACCEL_AUTODETECT_LIBRARY_LIST
1710     $THREADS_LIST
1711 "
1712
1713 ARCH_LIST="
1714     aarch64
1715     alpha
1716     arm
1717     avr32
1718     avr32_ap
1719     avr32_uc
1720     bfin
1721     ia64
1722     m68k
1723     mips
1724     mips64
1725     parisc
1726     ppc
1727     ppc64
1728     s390
1729     sh4
1730     sparc
1731     sparc64
1732     tilegx
1733     tilepro
1734     tomi
1735     x86
1736     x86_32
1737     x86_64
1738 "
1739
1740 ARCH_EXT_LIST_ARM="
1741     armv5te
1742     armv6
1743     armv6t2
1744     armv8
1745     neon
1746     vfp
1747     vfpv3
1748     setend
1749 "
1750
1751 ARCH_EXT_LIST_MIPS="
1752     mipsfpu
1753     mips32r2
1754     mips32r5
1755     mips64r2
1756     mips32r6
1757     mips64r6
1758     mipsdsp
1759     mipsdspr2
1760     msa
1761 "
1762
1763 ARCH_EXT_LIST_LOONGSON="
1764     loongson2
1765     loongson3
1766     mmi
1767 "
1768
1769 ARCH_EXT_LIST_X86_SIMD="
1770     aesni
1771     amd3dnow
1772     amd3dnowext
1773     avx
1774     avx2
1775     fma3
1776     fma4
1777     mmx
1778     mmxext
1779     sse
1780     sse2
1781     sse3
1782     sse4
1783     sse42
1784     ssse3
1785     xop
1786 "
1787
1788 ARCH_EXT_LIST_PPC="
1789     altivec
1790     dcbzl
1791     ldbrx
1792     power8
1793     ppc4xx
1794     vsx
1795 "
1796
1797 ARCH_EXT_LIST_X86="
1798     $ARCH_EXT_LIST_X86_SIMD
1799     cpunop
1800     i686
1801 "
1802
1803 ARCH_EXT_LIST="
1804     $ARCH_EXT_LIST_ARM
1805     $ARCH_EXT_LIST_PPC
1806     $ARCH_EXT_LIST_X86
1807     $ARCH_EXT_LIST_MIPS
1808     $ARCH_EXT_LIST_LOONGSON
1809 "
1810
1811 ARCH_FEATURES="
1812     aligned_stack
1813     fast_64bit
1814     fast_clz
1815     fast_cmov
1816     local_aligned_8
1817     local_aligned_16
1818     local_aligned_32
1819     simd_align_16
1820 "
1821
1822 BUILTIN_LIST="
1823     atomic_cas_ptr
1824     atomic_compare_exchange
1825     machine_rw_barrier
1826     MemoryBarrier
1827     mm_empty
1828     rdtsc
1829     sarestart
1830     sem_timedwait
1831     sync_val_compare_and_swap
1832 "
1833 HAVE_LIST_CMDLINE="
1834     inline_asm
1835     symver
1836     yasm
1837 "
1838
1839 HAVE_LIST_PUB="
1840     bigendian
1841     fast_unaligned
1842 "
1843
1844 HEADERS_LIST="
1845     alsa_asoundlib_h
1846     altivec_h
1847     arpa_inet_h
1848     asm_types_h
1849     cdio_paranoia_h
1850     cdio_paranoia_paranoia_h
1851     cuda_h
1852     dispatch_dispatch_h
1853     dev_bktr_ioctl_bt848_h
1854     dev_bktr_ioctl_meteor_h
1855     dev_ic_bt8xx_h
1856     dev_video_bktr_ioctl_bt848_h
1857     dev_video_meteor_ioctl_meteor_h
1858     direct_h
1859     dirent_h
1860     dlfcn_h
1861     d3d11_h
1862     dxva_h
1863     ES2_gl_h
1864     gsm_h
1865     io_h
1866     mach_mach_time_h
1867     machine_ioctl_bt848_h
1868     machine_ioctl_meteor_h
1869     malloc_h
1870     opencv2_core_core_c_h
1871     openjpeg_2_1_openjpeg_h
1872     openjpeg_2_0_openjpeg_h
1873     openjpeg_1_5_openjpeg_h
1874     OpenGL_gl3_h
1875     poll_h
1876     sndio_h
1877     soundcard_h
1878     stdatomic_h
1879     sys_mman_h
1880     sys_param_h
1881     sys_resource_h
1882     sys_select_h
1883     sys_soundcard_h
1884     sys_time_h
1885     sys_un_h
1886     sys_videoio_h
1887     termios_h
1888     udplite_h
1889     unistd_h
1890     valgrind_valgrind_h
1891     windows_h
1892     winsock2_h
1893 "
1894
1895 INTRINSICS_LIST="
1896     intrinsics_neon
1897 "
1898
1899 COMPLEX_FUNCS="
1900     cabs
1901     cexp
1902 "
1903
1904 MATH_FUNCS="
1905     atanf
1906     atan2f
1907     cbrt
1908     cbrtf
1909     copysign
1910     cosf
1911     erf
1912     exp2
1913     exp2f
1914     expf
1915     hypot
1916     isfinite
1917     isinf
1918     isnan
1919     ldexpf
1920     llrint
1921     llrintf
1922     log2
1923     log2f
1924     log10f
1925     lrint
1926     lrintf
1927     powf
1928     rint
1929     round
1930     roundf
1931     sinf
1932     trunc
1933     truncf
1934 "
1935
1936 SYSTEM_FUNCS="
1937     access
1938     aligned_malloc
1939     arc4random
1940     clock_gettime
1941     closesocket
1942     CommandLineToArgvW
1943     CoTaskMemFree
1944     CryptGenRandom
1945     dlopen
1946     fcntl
1947     flt_lim
1948     fork
1949     getaddrinfo
1950     gethrtime
1951     getopt
1952     GetProcessAffinityMask
1953     GetProcessMemoryInfo
1954     GetProcessTimes
1955     getrusage
1956     GetSystemTimeAsFileTime
1957     gettimeofday
1958     glob
1959     glXGetProcAddress
1960     gmtime_r
1961     inet_aton
1962     isatty
1963     jack_port_get_latency_range
1964     kbhit
1965     LoadLibrary
1966     localtime_r
1967     lstat
1968     lzo1x_999_compress
1969     mach_absolute_time
1970     MapViewOfFile
1971     memalign
1972     mkstemp
1973     mmap
1974     mprotect
1975     nanosleep
1976     PeekNamedPipe
1977     posix_memalign
1978     pthread_cancel
1979     sched_getaffinity
1980     SetConsoleTextAttribute
1981     SetConsoleCtrlHandler
1982     setmode
1983     setrlimit
1984     Sleep
1985     strerror_r
1986     sysconf
1987     sysctl
1988     usleep
1989     UTGetOSTypeFromString
1990     VirtualAlloc
1991     wglGetProcAddress
1992 "
1993
1994 TOOLCHAIN_FEATURES="
1995     as_dn_directive
1996     as_func
1997     as_object_arch
1998     asm_mod_q
1999     attribute_may_alias
2000     attribute_packed
2001     ebp_available
2002     ebx_available
2003     gnu_as
2004     gnu_windres
2005     ibm_asm
2006     inline_asm_direct_symbol_refs
2007     inline_asm_labels
2008     inline_asm_nonlocal_labels
2009     pragma_deprecated
2010     rsync_contimeout
2011     symver_asm_label
2012     symver_gnu_asm
2013     vfp_args
2014     xform_asm
2015     xmm_clobbers
2016 "
2017
2018 TYPES_LIST="
2019     CONDITION_VARIABLE_Ptr
2020     socklen_t
2021     struct_addrinfo
2022     struct_group_source_req
2023     struct_ip_mreq_source
2024     struct_ipv6_mreq
2025     struct_msghdr_msg_flags
2026     struct_pollfd
2027     struct_rusage_ru_maxrss
2028     struct_sctp_event_subscribe
2029     struct_sockaddr_in6
2030     struct_sockaddr_sa_len
2031     struct_sockaddr_storage
2032     struct_stat_st_mtim_tv_nsec
2033     struct_v4l2_frmivalenum_discrete
2034 "
2035
2036 HAVE_LIST="
2037     $ARCH_EXT_LIST
2038     $(add_suffix _external $ARCH_EXT_LIST)
2039     $(add_suffix _inline   $ARCH_EXT_LIST)
2040     $ARCH_FEATURES
2041     $ATOMICS_LIST
2042     $BUILTIN_LIST
2043     $COMPLEX_FUNCS
2044     $HAVE_LIST_CMDLINE
2045     $HAVE_LIST_PUB
2046     $HEADERS_LIST
2047     $INTRINSICS_LIST
2048     $MATH_FUNCS
2049     $SYSTEM_FUNCS
2050     $THREADS_LIST
2051     $TOOLCHAIN_FEATURES
2052     $TYPES_LIST
2053     atomics_native
2054     dos_paths
2055     dxva2_lib
2056     dxva2api_cobj
2057     libc_msvcrt
2058     libdc1394_1
2059     libdc1394_2
2060     makeinfo
2061     makeinfo_html
2062     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2063     perl
2064     pod2man
2065     sdl2
2066     section_data_rel_ro
2067     texi2html
2068     threads
2069     vaapi_drm
2070     vaapi_x11
2071     vdpau_x11
2072     winrt
2073     xlib
2074 "
2075
2076 # options emitted with CONFIG_ prefix but not available on the command line
2077 CONFIG_EXTRA="
2078     aandcttables
2079     ac3dsp
2080     audio_frame_queue
2081     audiodsp
2082     blockdsp
2083     bswapdsp
2084     cabac
2085     dirac_parse
2086     dvprofile
2087     exif
2088     faandct
2089     faanidct
2090     fdctdsp
2091     flacdsp
2092     fmtconvert
2093     frame_thread_encoder
2094     g722dsp
2095     golomb
2096     gplv3
2097     h263dsp
2098     h264chroma
2099     h264dsp
2100     h264parse
2101     h264pred
2102     h264qpel
2103     hpeldsp
2104     huffman
2105     huffyuvdsp
2106     huffyuvencdsp
2107     idctdsp
2108     iirfilter
2109     imdct15
2110     intrax8
2111     iso_media
2112     ividsp
2113     jpegtables
2114     lgplv3
2115     libx262
2116     llauddsp
2117     llviddsp
2118     lpc
2119     lzf
2120     me_cmp
2121     mpeg_er
2122     mpegaudio
2123     mpegaudiodsp
2124     mpegvideo
2125     mpegvideoenc
2126     mss34dsp
2127     pixblockdsp
2128     qpeldsp
2129     qsv
2130     qsvdec
2131     qsvenc
2132     rangecoder
2133     riffdec
2134     riffenc
2135     rtpdec
2136     rtpenc_chain
2137     rv34dsp
2138     sinewin
2139     snappy
2140     srtp
2141     startcode
2142     texturedsp
2143     texturedspenc
2144     tpeldsp
2145     vaapi_encode
2146     vc1dsp
2147     videodsp
2148     vp3dsp
2149     vp56dsp
2150     vp8dsp
2151     vt_bt2020
2152     wma_freqs
2153     wmv2dsp
2154 "
2155
2156 CMDLINE_SELECT="
2157     $ARCH_EXT_LIST
2158     $CONFIG_LIST
2159     $HAVE_LIST_CMDLINE
2160     $THREADS_LIST
2161     asm
2162     cross_compile
2163     debug
2164     extra_warnings
2165     logging
2166     lto
2167     optimizations
2168     rpath
2169     stripping
2170 "
2171
2172 PATHS_LIST="
2173     bindir
2174     datadir
2175     docdir
2176     incdir
2177     libdir
2178     mandir
2179     pkgconfigdir
2180     prefix
2181     shlibdir
2182     install_name_dir
2183 "
2184
2185 CMDLINE_SET="
2186     $PATHS_LIST
2187     ar
2188     arch
2189     as
2190     assert_level
2191     build_suffix
2192     cc
2193     objcc
2194     cpu
2195     cross_prefix
2196     custom_allocator
2197     cxx
2198     dep_cc
2199     doxygen
2200     env
2201     extra_version
2202     gas
2203     host_cc
2204     host_cflags
2205     host_ld
2206     host_ldflags
2207     host_libs
2208     host_os
2209     install
2210     ld
2211     ln_s
2212     logfile
2213     malloc_prefix
2214     nm
2215     optflags
2216     pkg_config
2217     pkg_config_flags
2218     progs_suffix
2219     random_seed
2220     ranlib
2221     samples
2222     strip
2223     sws_max_filter_size
2224     sysinclude
2225     sysroot
2226     target_exec
2227     target_os
2228     target_path
2229     target_samples
2230     tempprefix
2231     toolchain
2232     valgrind
2233     yasmexe
2234 "
2235
2236 CMDLINE_APPEND="
2237     extra_cflags
2238     extra_cxxflags
2239     extra_objcflags
2240     host_cppflags
2241 "
2242
2243 # code dependency declarations
2244
2245 # architecture extensions
2246
2247 armv5te_deps="arm"
2248 armv6_deps="arm"
2249 armv6t2_deps="arm"
2250 armv8_deps="aarch64"
2251 neon_deps_any="aarch64 arm"
2252 intrinsics_neon_deps="neon"
2253 vfp_deps_any="aarch64 arm"
2254 vfpv3_deps="vfp"
2255 setend_deps="arm"
2256
2257 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2258
2259 loongson2_deps="mips"
2260 loongson3_deps="mips"
2261 mipsfpu_deps="mips"
2262 mipsdsp_deps="mips"
2263 mipsdspr2_deps="mips"
2264 mips32r2_deps="mips"
2265 mips32r5_deps="mips"
2266 mips32r6_deps="mips"
2267 mips64r2_deps="mips"
2268 mips64r6_deps="mips"
2269 msa_deps="mipsfpu"
2270 mmi_deps="mips"
2271
2272 altivec_deps="ppc"
2273 dcbzl_deps="ppc"
2274 ldbrx_deps="ppc"
2275 ppc4xx_deps="ppc"
2276 vsx_deps="altivec"
2277 power8_deps="vsx"
2278
2279 cpunop_deps="i686"
2280 x86_64_select="i686"
2281 x86_64_suggest="fast_cmov"
2282
2283 amd3dnow_deps="mmx"
2284 amd3dnowext_deps="amd3dnow"
2285 i686_deps="x86"
2286 mmx_deps="x86"
2287 mmxext_deps="mmx"
2288 sse_deps="mmxext"
2289 sse2_deps="sse"
2290 sse3_deps="sse2"
2291 ssse3_deps="sse3"
2292 sse4_deps="ssse3"
2293 sse42_deps="sse4"
2294 aesni_deps="sse42"
2295 avx_deps="sse42"
2296 xop_deps="avx"
2297 fma3_deps="avx"
2298 fma4_deps="avx"
2299 avx2_deps="avx"
2300
2301 mmx_external_deps="yasm"
2302 mmx_inline_deps="inline_asm"
2303 mmx_suggest="mmx_external mmx_inline"
2304
2305 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2306     eval dep=\$${ext}_deps
2307     eval ${ext}_external_deps='"${dep}_external"'
2308     eval ${ext}_inline_deps='"${dep}_inline"'
2309     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2310 done
2311
2312 aligned_stack_if_any="aarch64 ppc x86"
2313 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2314 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2315 fast_unaligned_if_any="aarch64 ppc x86"
2316 simd_align_16_if_any="altivec neon sse"
2317
2318 # system capabilities
2319 symver_if_any="symver_asm_label symver_gnu_asm"
2320 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
2321
2322 # threading support
2323 atomics_gcc_if_any="sync_val_compare_and_swap atomic_compare_exchange"
2324 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2325 atomics_win32_if="MemoryBarrier"
2326 atomics_native_if_any="$ATOMICS_LIST"
2327 w32threads_deps="atomics_native"
2328 threads_if_any="$THREADS_LIST"
2329
2330 # subsystems
2331 dct_select="rdft"
2332 dirac_parse_select="golomb"
2333 error_resilience_select="me_cmp"
2334 faandct_deps="faan fdctdsp"
2335 faanidct_deps="faan idctdsp"
2336 h264dsp_select="startcode"
2337 frame_thread_encoder_deps="encoders threads"
2338 intrax8_select="blockdsp idctdsp"
2339 mdct_select="fft"
2340 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2341 mpeg_er_select="error_resilience"
2342 mpegaudio_select="mpegaudiodsp"
2343 mpegaudiodsp_select="dct"
2344 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2345 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2346 vc1dsp_select="h264chroma qpeldsp startcode"
2347 rdft_select="fft"
2348
2349 # decoders / encoders
2350 aac_decoder_select="imdct15 mdct sinewin"
2351 aac_fixed_decoder_select="mdct sinewin"
2352 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2353 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2354 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2355 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2356 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2357 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2358 adpcm_g722_decoder_select="g722dsp"
2359 adpcm_g722_encoder_select="g722dsp"
2360 aic_decoder_select="golomb idctdsp"
2361 alac_encoder_select="lpc"
2362 als_decoder_select="bswapdsp"
2363 amrnb_decoder_select="lsp"
2364 amrwb_decoder_select="lsp"
2365 amv_decoder_select="sp5x_decoder exif"
2366 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2367 ape_decoder_select="bswapdsp llauddsp"
2368 apng_decoder_select="zlib"
2369 apng_encoder_select="huffyuvencdsp zlib"
2370 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2371 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2372 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2373 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2374 atrac1_decoder_select="mdct sinewin"
2375 atrac3_decoder_select="mdct"
2376 atrac3p_decoder_select="mdct sinewin"
2377 avrn_decoder_select="exif jpegtables"
2378 bink_decoder_select="blockdsp hpeldsp"
2379 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2380 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2381 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2382 cllc_decoder_select="bswapdsp"
2383 comfortnoise_encoder_select="lpc"
2384 cook_decoder_select="audiodsp mdct sinewin"
2385 cscd_decoder_select="lzo"
2386 cscd_decoder_suggest="zlib"
2387 dca_decoder_select="mdct"
2388 dds_decoder_select="texturedsp"
2389 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2390 dnxhd_decoder_select="blockdsp idctdsp"
2391 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2392 dvvideo_decoder_select="dvprofile idctdsp"
2393 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2394 dxa_decoder_select="zlib"
2395 dxv_decoder_select="lzf texturedsp"
2396 eac3_decoder_select="ac3_decoder"
2397 eac3_encoder_select="ac3_encoder"
2398 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2399 eatgq_decoder_select="aandcttables"
2400 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2401 exr_decoder_select="zlib"
2402 ffv1_decoder_select="golomb rangecoder"
2403 ffv1_encoder_select="rangecoder"
2404 ffvhuff_decoder_select="huffyuv_decoder"
2405 ffvhuff_encoder_select="huffyuv_encoder"
2406 fic_decoder_select="golomb"
2407 flac_decoder_select="flacdsp golomb"
2408 flac_encoder_select="bswapdsp flacdsp golomb lpc"
2409 flashsv2_decoder_select="zlib"
2410 flashsv2_encoder_select="zlib"
2411 flashsv_decoder_select="zlib"
2412 flashsv_encoder_select="zlib"
2413 flv_decoder_select="h263_decoder"
2414 flv_encoder_select="h263_encoder"
2415 fourxm_decoder_select="blockdsp bswapdsp"
2416 fraps_decoder_select="bswapdsp huffman"
2417 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2418 g729_decoder_select="audiodsp"
2419 h261_decoder_select="mpegvideo"
2420 h261_encoder_select="aandcttables mpegvideoenc"
2421 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2422 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2423 h263i_decoder_select="h263_decoder"
2424 h263p_decoder_select="h263_decoder"
2425 h263p_encoder_select="h263_encoder"
2426 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2427 h264_decoder_suggest="error_resilience"
2428 hap_decoder_select="snappy texturedsp"
2429 hap_encoder_deps="libsnappy"
2430 hap_encoder_select="texturedspenc"
2431 hevc_decoder_select="bswapdsp cabac golomb videodsp"
2432 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2433 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llviddsp"
2434 iac_decoder_select="imc_decoder"
2435 imc_decoder_select="bswapdsp fft mdct sinewin"
2436 indeo3_decoder_select="hpeldsp"
2437 indeo4_decoder_select="ividsp"
2438 indeo5_decoder_select="ividsp"
2439 interplay_video_decoder_select="hpeldsp"
2440 jpegls_decoder_select="golomb mjpeg_decoder"
2441 jpegls_encoder_select="golomb"
2442 jv_decoder_select="blockdsp"
2443 lagarith_decoder_select="huffyuvdsp"
2444 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2445 loco_decoder_select="golomb"
2446 magicyuv_decoder_select="huffyuvdsp llviddsp"
2447 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2448 metasound_decoder_select="lsp mdct sinewin"
2449 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2450 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2451 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2452 mjpegb_decoder_select="mjpeg_decoder"
2453 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2454 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2455 mlp_decoder_select="mlp_parser"
2456 motionpixels_decoder_select="bswapdsp"
2457 mp1_decoder_select="mpegaudio"
2458 mp1float_decoder_select="mpegaudio"
2459 mp2_decoder_select="mpegaudio"
2460 mp2float_decoder_select="mpegaudio"
2461 mp3_decoder_select="mpegaudio"
2462 mp3adu_decoder_select="mpegaudio"
2463 mp3adufloat_decoder_select="mpegaudio"
2464 mp3float_decoder_select="mpegaudio"
2465 mp3on4_decoder_select="mpegaudio"
2466 mp3on4float_decoder_select="mpegaudio"
2467 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2468 mpc8_decoder_select="mpegaudiodsp"
2469 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2470 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2471 mpegvideo_decoder_select="mpegvideo"
2472 mpeg1video_decoder_select="mpegvideo"
2473 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2474 mpeg2video_decoder_select="mpegvideo"
2475 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2476 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2477 mpeg4_encoder_select="h263_encoder"
2478 msa1_decoder_select="mss34dsp"
2479 msmpeg4v1_decoder_select="h263_decoder"
2480 msmpeg4v2_decoder_select="h263_decoder"
2481 msmpeg4v2_encoder_select="h263_encoder"
2482 msmpeg4v3_decoder_select="h263_decoder"
2483 msmpeg4v3_encoder_select="h263_encoder"
2484 mss2_decoder_select="vc1_decoder mpegvideo"
2485 mts2_decoder_select="mss34dsp"
2486 mxpeg_decoder_select="mjpeg_decoder"
2487 nellymoser_decoder_select="mdct sinewin"
2488 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2489 nuv_decoder_select="idctdsp lzo"
2490 on2avc_decoder_select="mdct"
2491 opus_decoder_deps="swresample"
2492 opus_decoder_select="imdct15"
2493 png_decoder_select="zlib"
2494 png_encoder_select="huffyuvencdsp zlib"
2495 prores_decoder_select="blockdsp idctdsp"
2496 prores_encoder_select="fdctdsp"
2497 qcelp_decoder_select="lsp"
2498 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2499 ra_144_decoder_select="audiodsp"
2500 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2501 ralf_decoder_select="golomb"
2502 rawvideo_decoder_select="bswapdsp"
2503 rscc_decoder_select="zlib"
2504 rtjpeg_decoder_select="me_cmp"
2505 rv10_decoder_select="h263_decoder"
2506 rv10_encoder_select="h263_encoder"
2507 rv20_decoder_select="h263_decoder"
2508 rv20_encoder_select="h263_encoder"
2509 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2510 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2511 screenpresso_decoder_select="zlib"
2512 shorten_decoder_select="golomb"
2513 sipr_decoder_select="lsp"
2514 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2515 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2516 sonic_decoder_select="golomb rangecoder"
2517 sonic_encoder_select="golomb rangecoder"
2518 sonic_ls_encoder_select="golomb rangecoder"
2519 sp5x_decoder_select="mjpeg_decoder"
2520 svq1_decoder_select="hpeldsp"
2521 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2522 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2523 svq3_decoder_suggest="zlib"
2524 tak_decoder_select="audiodsp"
2525 tdsc_decoder_select="zlib mjpeg_decoder"
2526 theora_decoder_select="vp3_decoder"
2527 thp_decoder_select="mjpeg_decoder"
2528 tiff_decoder_suggest="zlib lzma"
2529 tiff_encoder_suggest="zlib"
2530 truehd_decoder_select="mlp_parser"
2531 truemotion2_decoder_select="bswapdsp"
2532 truespeech_decoder_select="bswapdsp"
2533 tscc_decoder_select="zlib"
2534 twinvq_decoder_select="mdct lsp sinewin"
2535 txd_decoder_select="texturedsp"
2536 utvideo_decoder_select="bswapdsp huffyuvdsp"
2537 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2538 vble_decoder_select="huffyuvdsp"
2539 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2540 vc1_qsv_decoder_deps="libmfx"
2541 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel"
2542 vc1image_decoder_select="vc1_decoder"
2543 vorbis_decoder_select="mdct"
2544 vorbis_encoder_select="mdct"
2545 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2546 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2547 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2548 vp6a_decoder_select="vp6_decoder"
2549 vp6f_decoder_select="vp6_decoder"
2550 vp7_decoder_select="h264pred videodsp vp8dsp"
2551 vp8_decoder_select="h264pred videodsp vp8dsp"
2552 vp9_decoder_select="videodsp vp9_parser"
2553 webp_decoder_select="vp8_decoder exif"
2554 wmalossless_decoder_select="llauddsp"
2555 wmapro_decoder_select="mdct sinewin wma_freqs"
2556 wmav1_decoder_select="mdct sinewin wma_freqs"
2557 wmav1_encoder_select="mdct sinewin wma_freqs"
2558 wmav2_decoder_select="mdct sinewin wma_freqs"
2559 wmav2_encoder_select="mdct sinewin wma_freqs"
2560 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2561 wmv1_decoder_select="h263_decoder"
2562 wmv1_encoder_select="h263_encoder"
2563 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2564 wmv2_encoder_select="h263_encoder wmv2dsp"
2565 wmv3_decoder_select="vc1_decoder"
2566 wmv3image_decoder_select="wmv3_decoder"
2567 xma1_decoder_select="wmapro_decoder"
2568 xma2_decoder_select="wmapro_decoder"
2569 zerocodec_decoder_select="zlib"
2570 zlib_decoder_select="zlib"
2571 zlib_encoder_select="zlib"
2572 zmbv_decoder_select="zlib"
2573 zmbv_encoder_select="zlib"
2574
2575 # platform codecs
2576 audiotoolbox_deps="AudioToolbox_AudioToolbox_h"
2577 audiotoolbox_extralibs="-framework CoreFoundation -framework AudioToolbox -framework CoreMedia"
2578
2579 # hardware accelerators
2580 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2581 cuda_deps_any="dlopen LoadLibrary"
2582 cuvid_deps="cuda"
2583 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2584 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2585 dxva2_extralibs="-luser32"
2586 vaapi_deps="va_va_h"
2587 vda_framework_deps="VideoDecodeAcceleration_VDADecoder_h"
2588 vda_framework_extralibs="-framework VideoDecodeAcceleration"
2589 vda_deps="vda_framework pthreads"
2590 vda_extralibs="-framework CoreFoundation -framework QuartzCore"
2591 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2592 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2593 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2594 xvmc_deps="X11_extensions_XvMClib_h"
2595
2596 h263_vaapi_hwaccel_deps="vaapi"
2597 h263_vaapi_hwaccel_select="h263_decoder"
2598 h263_videotoolbox_hwaccel_deps="videotoolbox"
2599 h263_videotoolbox_hwaccel_select="h263_decoder"
2600 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2601 h264_cuvid_hwaccel_deps="cuda cuvid"
2602 h264_d3d11va_hwaccel_deps="d3d11va"
2603 h264_d3d11va_hwaccel_select="h264_decoder"
2604 h264_dxva2_hwaccel_deps="dxva2"
2605 h264_dxva2_hwaccel_select="h264_decoder"
2606 h264_mediacodec_decoder_deps="mediacodec"
2607 h264_mediacodec_hwaccel_deps="mediacodec"
2608 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2609 h264_mmal_decoder_deps="mmal"
2610 h264_mmal_decoder_select="mmal"
2611 h264_mmal_hwaccel_deps="mmal"
2612 h264_omx_encoder_deps="omx"
2613 h264_qsv_hwaccel_deps="libmfx"
2614 h264_vaapi_hwaccel_deps="vaapi"
2615 h264_vaapi_hwaccel_select="h264_decoder"
2616 h264_vda_decoder_deps="vda"
2617 h264_vda_decoder_select="h264_decoder"
2618 h264_vda_hwaccel_deps="vda"
2619 h264_vda_hwaccel_select="h264_decoder"
2620 h264_vda_old_hwaccel_deps="vda"
2621 h264_vda_old_hwaccel_select="h264_decoder"
2622 h264_vdpau_decoder_deps="vdpau"
2623 h264_vdpau_decoder_select="h264_decoder"
2624 h264_vdpau_hwaccel_deps="vdpau"
2625 h264_vdpau_hwaccel_select="h264_decoder"
2626 h264_videotoolbox_hwaccel_deps="videotoolbox"
2627 h264_videotoolbox_hwaccel_select="h264_decoder"
2628 hevc_cuvid_hwaccel_deps="cuda cuvid"
2629 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2630 hevc_d3d11va_hwaccel_select="hevc_decoder"
2631 hevc_mediacodec_decoder_deps="mediacodec"
2632 hevc_mediacodec_hwaccel_deps="mediacodec"
2633 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2634 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2635 hevc_dxva2_hwaccel_select="hevc_decoder"
2636 hevc_qsv_hwaccel_deps="libmfx"
2637 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2638 hevc_vaapi_hwaccel_select="hevc_decoder"
2639 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2640 hevc_vdpau_hwaccel_select="hevc_decoder"
2641 mjpeg_cuvid_hwaccel_deps="cuda cuvid"
2642 mpeg_vdpau_decoder_deps="vdpau"
2643 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2644 mpeg_xvmc_hwaccel_deps="xvmc"
2645 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2646 mpeg1_cuvid_hwaccel_deps="cuda cuvid"
2647 mpeg1_vdpau_decoder_deps="vdpau"
2648 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2649 mpeg1_vdpau_hwaccel_deps="vdpau"
2650 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2651 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2652 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2653 mpeg1_xvmc_hwaccel_deps="xvmc"
2654 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2655 mpeg2_crystalhd_decoder_select="crystalhd"
2656 mpeg2_cuvid_hwaccel_deps="cuda cuvid"
2657 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2658 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2659 mpeg2_dxva2_hwaccel_deps="dxva2"
2660 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2661 mpeg2_mmal_decoder_deps="mmal"
2662 mpeg2_mmal_decoder_select="mmal"
2663 mpeg2_mmal_hwaccel_deps="mmal"
2664 mpeg2_qsv_hwaccel_deps="libmfx"
2665 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2666 mpeg2_vaapi_hwaccel_deps="vaapi"
2667 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2668 mpeg2_vdpau_hwaccel_deps="vdpau"
2669 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2670 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2671 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2672 mpeg2_xvmc_hwaccel_deps="xvmc"
2673 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2674 mpeg4_crystalhd_decoder_select="crystalhd"
2675 mpeg4_cuvid_hwaccel_deps="cuda cuvid"
2676 mpeg4_mediacodec_decoder_deps="mediacodec"
2677 mpeg4_mediacodec_hwaccel_deps="mediacodec"
2678 mpeg4_mmal_decoder_deps="mmal"
2679 mpeg4_mmal_decoder_select="mmal"
2680 mpeg4_mmal_hwaccel_deps="mmal"
2681 mpeg4_omx_encoder_deps="omx"
2682 mpeg4_vaapi_hwaccel_deps="vaapi"
2683 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2684 mpeg4_vdpau_decoder_deps="vdpau"
2685 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2686 mpeg4_vdpau_hwaccel_deps="vdpau"
2687 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2688 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2689 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2690 msmpeg4_crystalhd_decoder_select="crystalhd"
2691 vc1_crystalhd_decoder_select="crystalhd"
2692 vc1_cuvid_hwaccel_deps="cuda cuvid"
2693 vc1_d3d11va_hwaccel_deps="d3d11va"
2694 vc1_d3d11va_hwaccel_select="vc1_decoder"
2695 vc1_dxva2_hwaccel_deps="dxva2"
2696 vc1_dxva2_hwaccel_select="vc1_decoder"
2697 vc1_mmal_decoder_deps="mmal"
2698 vc1_mmal_decoder_select="mmal"
2699 vc1_mmal_hwaccel_deps="mmal"
2700 vc1_qsv_hwaccel_deps="libmfx"
2701 vc1_qsv_hwaccel_select="qsvdec_vc1"
2702 vc1_vaapi_hwaccel_deps="vaapi"
2703 vc1_vaapi_hwaccel_select="vc1_decoder"
2704 vc1_vdpau_decoder_deps="vdpau"
2705 vc1_vdpau_decoder_select="vc1_decoder"
2706 vc1_vdpau_hwaccel_deps="vdpau"
2707 vc1_vdpau_hwaccel_select="vc1_decoder"
2708 vp8_cuvid_hwaccel_deps="cuda cuvid"
2709 vp9_cuvid_hwaccel_deps="cuda cuvid"
2710 vp8_mediacodec_decoder_deps="mediacodec"
2711 vp8_mediacodec_hwaccel_deps="mediacodec"
2712 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2713 vp9_d3d11va_hwaccel_select="vp9_decoder"
2714 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2715 vp9_dxva2_hwaccel_select="vp9_decoder"
2716 vp9_mediacodec_decoder_deps="mediacodec"
2717 vp9_mediacodec_hwaccel_deps="mediacodec"
2718 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2719 vp9_vaapi_hwaccel_select="vp9_decoder"
2720 wmv3_crystalhd_decoder_select="crystalhd"
2721 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2722 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2723 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2724 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2725 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2726
2727 # hardware-accelerated codecs
2728 omx_deps="dlopen pthreads"
2729 omx_extralibs='$ldl'
2730 qsvdec_select="qsv"
2731 qsvenc_select="qsv"
2732 vaapi_encode_deps="vaapi"
2733
2734 hwupload_cuda_filter_deps="cuda"
2735 scale_npp_filter_deps="cuda libnpp"
2736
2737 nvenc_deps="cuda"
2738 nvenc_deps_any="dlopen LoadLibrary"
2739 nvenc_encoder_deps="nvenc"
2740 h264_cuvid_decoder_deps="cuda cuvid"
2741 h264_cuvid_decoder_select="h264_mp4toannexb_bsf h264_cuvid_hwaccel"
2742 h264_nvenc_encoder_deps="nvenc"
2743 h264_qsv_decoder_deps="libmfx"
2744 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2745 h264_qsv_encoder_deps="libmfx"
2746 h264_qsv_encoder_select="qsvenc"
2747 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2748 h264_vaapi_encoder_select="vaapi_encode golomb"
2749
2750 hevc_cuvid_decoder_deps="cuda cuvid"
2751 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf hevc_cuvid_hwaccel"
2752 hevc_nvenc_encoder_deps="nvenc"
2753 hevc_qsv_decoder_deps="libmfx"
2754 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2755 hevc_qsv_encoder_deps="libmfx"
2756 hevc_qsv_encoder_select="qsvenc"
2757 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2758 hevc_vaapi_encoder_select="vaapi_encode golomb"
2759 mjpeg_cuvid_decoder_deps="cuda cuvid"
2760 mjpeg_cuvid_decoder_select="mjpeg_cuvid_hwaccel"
2761 mpeg1_cuvid_decoder_deps="cuda cuvid"
2762 mpeg1_cuvid_decoder_select="mpeg1_cuvid_hwaccel"
2763 mpeg2_cuvid_decoder_deps="cuda cuvid"
2764 mpeg2_cuvid_decoder_select="mpeg2_cuvid_hwaccel"
2765 mpeg2_qsv_decoder_deps="libmfx"
2766 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2767 mpeg2_qsv_encoder_deps="libmfx"
2768 mpeg2_qsv_encoder_select="qsvenc"
2769 mpeg4_cuvid_decoder_deps="cuda cuvid"
2770 mpeg4_cuvid_decoder_select="mpeg4_cuvid_hwaccel"
2771 nvenc_h264_encoder_deps="nvenc"
2772 nvenc_hevc_encoder_deps="nvenc"
2773
2774 vc1_cuvid_decoder_deps="cuda cuvid"
2775 vc1_cuvid_decoder_select="vc1_cuvid_hwaccel"
2776 vp8_cuvid_decoder_deps="cuda cuvid"
2777 vp8_cuvid_decoder_select="vp8_cuvid_hwaccel"
2778 vp9_cuvid_decoder_deps="cuda cuvid"
2779 vp9_cuvid_decoder_select="vp9_cuvid_hwaccel"
2780
2781 # parsers
2782 h264_parser_select="golomb h264dsp h264parse"
2783 hevc_parser_select="golomb"
2784 mpegvideo_parser_select="mpegvideo"
2785 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2786 vc1_parser_select="vc1dsp"
2787
2788 # bitstream_filters
2789 mjpeg2jpeg_bsf_select="jpegtables"
2790
2791 # external libraries
2792 aac_at_decoder_deps="audiotoolbox"
2793 ac3_at_decoder_deps="audiotoolbox"
2794 ac3_at_decoder_select="ac3_parser"
2795 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2796 alac_at_decoder_deps="audiotoolbox"
2797 amr_nb_at_decoder_deps="audiotoolbox"
2798 avisynth_deps_any="dlopen LoadLibrary"
2799 avisynth_demuxer_deps="avisynth"
2800 avisynth_demuxer_select="riffdec"
2801 eac3_at_decoder_deps="audiotoolbox"
2802 eac3_at_decoder_select="ac3_parser"
2803 gsm_ms_at_decoder_deps="audiotoolbox"
2804 ilbc_at_decoder_deps="audiotoolbox"
2805 mp1_at_decoder_deps="audiotoolbox"
2806 mp2_at_decoder_deps="audiotoolbox"
2807 mp3_at_decoder_deps="audiotoolbox"
2808 pcm_alaw_at_decoder_deps="audiotoolbox"
2809 pcm_mulaw_at_decoder_deps="audiotoolbox"
2810 qdmc_at_decoder_deps="audiotoolbox"
2811 qdm2_at_decoder_deps="audiotoolbox"
2812 aac_at_encoder_deps="audiotoolbox"
2813 aac_at_encoder_select="audio_frame_queue"
2814 alac_at_encoder_deps="audiotoolbox"
2815 alac_at_encoder_select="audio_frame_queue"
2816 ilbc_at_encoder_deps="audiotoolbox"
2817 ilbc_at_encoder_select="audio_frame_queue"
2818 pcm_alaw_at_encoder_deps="audiotoolbox"
2819 pcm_alaw_at_encoder_select="audio_frame_queue"
2820 pcm_mulaw_at_encoder_deps="audiotoolbox"
2821 pcm_mulaw_at_encoder_select="audio_frame_queue"
2822 chromaprint_muxer_deps="chromaprint"
2823 h264_videotoolbox_encoder_deps="videotoolbox_encoder pthreads"
2824 libcelt_decoder_deps="libcelt"
2825 libfdk_aac_decoder_deps="libfdk_aac"
2826 libfdk_aac_encoder_deps="libfdk_aac"
2827 libfdk_aac_encoder_select="audio_frame_queue"
2828 libgme_demuxer_deps="libgme"
2829 libgsm_decoder_deps="libgsm"
2830 libgsm_encoder_deps="libgsm"
2831 libgsm_ms_decoder_deps="libgsm"
2832 libgsm_ms_encoder_deps="libgsm"
2833 libilbc_decoder_deps="libilbc"
2834 libilbc_encoder_deps="libilbc"
2835 libkvazaar_encoder_deps="libkvazaar"
2836 libmodplug_demuxer_deps="libmodplug"
2837 libmp3lame_encoder_deps="libmp3lame"
2838 libmp3lame_encoder_select="audio_frame_queue"
2839 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2840 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2841 libopencore_amrnb_encoder_select="audio_frame_queue"
2842 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2843 libopenh264_decoder_deps="libopenh264"
2844 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2845 libopenh264_encoder_deps="libopenh264"
2846 libopenjpeg_decoder_deps="libopenjpeg"
2847 libopenjpeg_encoder_deps="libopenjpeg"
2848 libopenmpt_demuxer_deps="libopenmpt"
2849 libopus_decoder_deps="libopus"
2850 libopus_encoder_deps="libopus"
2851 libopus_encoder_select="audio_frame_queue"
2852 libschroedinger_decoder_deps="libschroedinger"
2853 libschroedinger_encoder_deps="libschroedinger"
2854 libshine_encoder_deps="libshine"
2855 libshine_encoder_select="audio_frame_queue"
2856 libspeex_decoder_deps="libspeex"
2857 libspeex_encoder_deps="libspeex"
2858 libspeex_encoder_select="audio_frame_queue"
2859 libtheora_encoder_deps="libtheora"
2860 libtwolame_encoder_deps="libtwolame"
2861 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2862 libvorbis_decoder_deps="libvorbis"
2863 libvorbis_encoder_deps="libvorbis"
2864 libvorbis_encoder_select="audio_frame_queue"
2865 libvpx_vp8_decoder_deps="libvpx"
2866 libvpx_vp8_encoder_deps="libvpx"
2867 libvpx_vp9_decoder_deps="libvpx"
2868 libvpx_vp9_encoder_deps="libvpx"
2869 libwavpack_encoder_deps="libwavpack"
2870 libwebp_encoder_deps="libwebp"
2871 libwebp_anim_encoder_deps="libwebp"
2872 libx262_encoder_deps="libx262"
2873 libx264_encoder_deps="libx264"
2874 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2875 libx264rgb_encoder_select="libx264_encoder"
2876 libx265_encoder_deps="libx265"
2877 libxavs_encoder_deps="libxavs"
2878 libxvid_encoder_deps="libxvid"
2879 libzvbi_teletext_decoder_deps="libzvbi"
2880 videotoolbox_deps="VideoToolbox_VideoToolbox_h"
2881 videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework CoreVideo"
2882 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2883 videotoolbox_encoder_suggest="vda_framework vt_bt2020"
2884 vt_bt2020_deps="kCVImageBufferColorPrimaries_ITU_R_2020"
2885
2886 # demuxers / muxers
2887 ac3_demuxer_select="ac3_parser"
2888 asf_demuxer_select="riffdec"
2889 asf_o_demuxer_select="riffdec"
2890 asf_muxer_select="riffenc"
2891 asf_stream_muxer_select="asf_muxer"
2892 avi_demuxer_select="iso_media riffdec exif"
2893 avi_muxer_select="riffenc"
2894 caf_demuxer_select="iso_media riffdec"
2895 dash_muxer_select="mp4_muxer"
2896 dirac_demuxer_select="dirac_parser"
2897 dts_demuxer_select="dca_parser"
2898 dtshd_demuxer_select="dca_parser"
2899 dv_demuxer_select="dvprofile"
2900 dv_muxer_select="dvprofile"
2901 dxa_demuxer_select="riffdec"
2902 eac3_demuxer_select="ac3_parser"
2903 f4v_muxer_select="mov_muxer"
2904 fifo_muxer_deps="threads"
2905 flac_demuxer_select="flac_parser"
2906 hds_muxer_select="flv_muxer"
2907 hls_muxer_select="mpegts_muxer"
2908 image2_alias_pix_demuxer_select="image2_demuxer"
2909 image2_brender_pix_demuxer_select="image2_demuxer"
2910 ipod_muxer_select="mov_muxer"
2911 ismv_muxer_select="mov_muxer"
2912 libnut_demuxer_deps="libnut"
2913 libnut_muxer_deps="libnut"
2914 matroska_audio_muxer_select="matroska_muxer"
2915 matroska_demuxer_select="iso_media riffdec"
2916 matroska_demuxer_suggest="bzlib lzo zlib"
2917 matroska_muxer_select="iso_media riffenc"
2918 mmf_muxer_select="riffenc"
2919 mov_demuxer_select="iso_media riffdec"
2920 mov_demuxer_suggest="zlib"
2921 mov_muxer_select="iso_media riffenc rtpenc_chain"
2922 mp3_demuxer_select="mpegaudio_parser"
2923 mp4_muxer_select="mov_muxer"
2924 mpegts_demuxer_select="iso_media"
2925 mpegts_muxer_select="adts_muxer latm_muxer"
2926 mpegtsraw_demuxer_select="mpegts_demuxer"
2927 mxf_d10_muxer_select="mxf_muxer"
2928 mxf_opatom_muxer_select="mxf_muxer"
2929 nut_muxer_select="riffenc"
2930 nuv_demuxer_select="riffdec"
2931 oga_muxer_select="ogg_muxer"
2932 ogg_demuxer_select="dirac_parse"
2933 ogv_muxer_select="ogg_muxer"
2934 opus_muxer_select="ogg_muxer"
2935 psp_muxer_select="mov_muxer"
2936 rtp_demuxer_select="sdp_demuxer"
2937 rtp_muxer_select="golomb"
2938 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2939 rtsp_demuxer_select="http_protocol rtpdec"
2940 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2941 sap_demuxer_select="sdp_demuxer"
2942 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2943 sdp_demuxer_select="rtpdec"
2944 smoothstreaming_muxer_select="ismv_muxer"
2945 spdif_muxer_select="aac_parser"
2946 spx_muxer_select="ogg_muxer"
2947 swf_demuxer_suggest="zlib"
2948 tak_demuxer_select="tak_parser"
2949 tg2_muxer_select="mov_muxer"
2950 tgp_muxer_select="mov_muxer"
2951 vobsub_demuxer_select="mpegps_demuxer"
2952 w64_demuxer_select="wav_demuxer"
2953 w64_muxer_select="wav_muxer"
2954 wav_demuxer_select="riffdec"
2955 wav_muxer_select="riffenc"
2956 webm_muxer_select="iso_media riffenc"
2957 webm_dash_manifest_demuxer_select="matroska_demuxer"
2958 wtv_demuxer_select="mpegts_demuxer riffdec"
2959 wtv_muxer_select="mpegts_muxer riffenc"
2960 xmv_demuxer_select="riffdec"
2961 xwma_demuxer_select="riffdec"
2962
2963 # indevs / outdevs
2964 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2965 alsa_outdev_deps="alsa_asoundlib_h"
2966 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2967 avfoundation_indev_select="avfoundation"
2968 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2969 caca_outdev_deps="libcaca"
2970 decklink_indev_deps="decklink pthreads"
2971 decklink_indev_extralibs="-lstdc++"
2972 decklink_outdev_deps="decklink pthreads"
2973 decklink_outdev_extralibs="-lstdc++"
2974 dshow_indev_deps="IBaseFilter"
2975 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
2976 dv1394_indev_deps="dv1394"
2977 dv1394_indev_select="dv_demuxer"
2978 fbdev_indev_deps="linux_fb_h"
2979 fbdev_outdev_deps="linux_fb_h"
2980 gdigrab_indev_deps="CreateDIBSection"
2981 gdigrab_indev_extralibs="-lgdi32"
2982 gdigrab_indev_select="bmp_decoder"
2983 iec61883_indev_deps="libiec61883"
2984 jack_indev_deps="jack_jack_h"
2985 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2986 lavfi_indev_deps="avfilter"
2987 libcdio_indev_deps="libcdio"
2988 libdc1394_indev_deps="libdc1394"
2989 libv4l2_indev_deps="libv4l2"
2990 openal_indev_deps="openal"
2991 opengl_outdev_deps="opengl"
2992 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2993 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2994 pulse_indev_deps="libpulse"
2995 pulse_outdev_deps="libpulse"
2996 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2997 qtkit_indev_select="qtkit"
2998 sdl2_outdev_deps="sdl2"
2999 sndio_indev_deps="sndio_h"
3000 sndio_outdev_deps="sndio_h"
3001 v4l_indev_deps="linux_videodev_h"
3002 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3003 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3004 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
3005 vfwcap_indev_extralibs="-lavicap32"
3006 x11grab_indev_deps="x11grab"
3007 x11grab_xcb_indev_deps="libxcb"
3008 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3009 xv_outdev_extralibs="-lXv -lX11 -lXext"
3010
3011 # protocols
3012 async_protocol_deps="threads"
3013 bluray_protocol_deps="libbluray"
3014 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
3015 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3016 ffrtmpcrypt_protocol_select="tcp_protocol"
3017 ffrtmphttp_protocol_deps="!librtmp_protocol"
3018 ffrtmphttp_protocol_select="http_protocol"
3019 ftp_protocol_select="tcp_protocol"
3020 gopher_protocol_select="network"
3021 http_protocol_select="tcp_protocol"
3022 httpproxy_protocol_select="tcp_protocol"
3023 https_protocol_select="tls_protocol"
3024 icecast_protocol_select="http_protocol"
3025 librtmp_protocol_deps="librtmp"
3026 librtmpe_protocol_deps="librtmp"
3027 librtmps_protocol_deps="librtmp"
3028 librtmpt_protocol_deps="librtmp"
3029 librtmpte_protocol_deps="librtmp"
3030 libsmbclient_protocol_deps="libsmbclient gplv3"
3031 libssh_protocol_deps="libssh"
3032 mmsh_protocol_select="http_protocol"
3033 mmst_protocol_select="network"
3034 rtmp_protocol_deps="!librtmp_protocol"
3035 rtmp_protocol_select="tcp_protocol"
3036 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3037 rtmps_protocol_deps="!librtmp_protocol"
3038 rtmps_protocol_select="tls_protocol"
3039 rtmpt_protocol_select="ffrtmphttp_protocol"
3040 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3041 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3042 rtp_protocol_select="udp_protocol"
3043 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3044 sctp_protocol_select="network"
3045 srtp_protocol_select="rtp_protocol srtp"
3046 tcp_protocol_select="network"
3047 tls_gnutls_protocol_deps="gnutls !tls_schannel_protocol !tls_securetransport_protocol"
3048 tls_gnutls_protocol_select="tcp_protocol"
3049 tls_openssl_protocol_deps="openssl !tls_schannel_protocol !tls_securetransport_protocol !tls_gnutls_protocol"
3050 tls_openssl_protocol_select="tcp_protocol"
3051 tls_schannel_protocol_deps="schannel"
3052 tls_schannel_protocol_select="tcp_protocol"
3053 tls_securetransport_protocol_deps="securetransport"
3054 tls_securetransport_protocol_select="tcp_protocol"
3055 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
3056 udp_protocol_select="network"
3057 udplite_protocol_select="network"
3058 unix_protocol_deps="sys_un_h"
3059 unix_protocol_select="network"
3060
3061 # filters
3062 afftfilt_filter_deps="avcodec"
3063 afftfilt_filter_select="fft"
3064 amovie_filter_deps="avcodec avformat"
3065 aresample_filter_deps="swresample"
3066 ass_filter_deps="libass"
3067 asyncts_filter_deps="avresample"
3068 atempo_filter_deps="avcodec"
3069 atempo_filter_select="rdft"
3070 azmq_filter_deps="libzmq"
3071 blackframe_filter_deps="gpl"
3072 boxblur_filter_deps="gpl"
3073 bs2b_filter_deps="libbs2b"
3074 colormatrix_filter_deps="gpl"
3075 cover_rect_filter_deps="avcodec avformat gpl"
3076 cropdetect_filter_deps="gpl"
3077 delogo_filter_deps="gpl"
3078 deshake_filter_select="pixelutils"
3079 drawtext_filter_deps="libfreetype"
3080 eq_filter_deps="gpl"
3081 fftfilt_filter_deps="avcodec"
3082 fftfilt_filter_select="rdft"
3083 find_rect_filter_deps="avcodec avformat gpl"
3084 firequalizer_filter_deps="avcodec"
3085 firequalizer_filter_select="rdft"
3086 flite_filter_deps="libflite"
3087 framerate_filter_select="pixelutils"
3088 frei0r_filter_deps="frei0r dlopen"
3089 frei0r_src_filter_deps="frei0r dlopen"
3090 fspp_filter_deps="gpl"
3091 geq_filter_deps="gpl"
3092 histeq_filter_deps="gpl"
3093 hqdn3d_filter_deps="gpl"
3094 interlace_filter_deps="gpl"
3095 kerndeint_filter_deps="gpl"
3096 ladspa_filter_deps="ladspa dlopen"
3097 mcdeint_filter_deps="avcodec gpl"
3098 movie_filter_deps="avcodec avformat"
3099 mpdecimate_filter_deps="gpl"
3100 mpdecimate_filter_select="pixelutils"
3101 mptestsrc_filter_deps="gpl"
3102 negate_filter_deps="lut_filter"
3103 nnedi_filter_deps="gpl"
3104 ocr_filter_deps="libtesseract"
3105 ocv_filter_deps="libopencv"
3106 owdenoise_filter_deps="gpl"
3107 pan_filter_deps="swresample"
3108 perspective_filter_deps="gpl"
3109 phase_filter_deps="gpl"
3110 pp7_filter_deps="gpl"
3111 pp_filter_deps="gpl postproc"
3112 pullup_filter_deps="gpl"
3113 removelogo_filter_deps="avcodec avformat swscale"
3114 repeatfields_filter_deps="gpl"
3115 resample_filter_deps="avresample"
3116 rubberband_filter_deps="librubberband"
3117 sab_filter_deps="gpl swscale"
3118 scale2ref_filter_deps="swscale"
3119 scale_filter_deps="swscale"
3120 select_filter_select="pixelutils"
3121 showcqt_filter_deps="avcodec avformat swscale"
3122 showcqt_filter_select="fft"
3123 showfreqs_filter_deps="avcodec"
3124 showfreqs_filter_select="fft"
3125 showspectrum_filter_deps="avcodec"
3126 showspectrum_filter_select="fft"
3127 showspectrumpic_filter_deps="avcodec"
3128 showspectrumpic_filter_select="fft"
3129 smartblur_filter_deps="gpl swscale"
3130 sofalizer_filter_deps="netcdf avcodec"
3131 sofalizer_filter_select="fft"
3132 spectrumsynth_filter_deps="avcodec"
3133 spectrumsynth_filter_select="fft"
3134 spp_filter_deps="gpl avcodec"
3135 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3136 stereo3d_filter_deps="gpl"
3137 subtitles_filter_deps="avformat avcodec libass"
3138 super2xsai_filter_deps="gpl"
3139 pixfmts_super2xsai_test_deps="super2xsai_filter"
3140 tinterlace_filter_deps="gpl"
3141 tinterlace_merge_test_deps="tinterlace_filter"
3142 tinterlace_pad_test_deps="tinterlace_filter"
3143 uspp_filter_deps="gpl avcodec"
3144 vaguedenoiser_filter_deps="gpl"
3145 vidstabdetect_filter_deps="libvidstab"
3146 vidstabtransform_filter_deps="libvidstab"
3147 zmq_filter_deps="libzmq"
3148 zoompan_filter_deps="swscale"
3149 zscale_filter_deps="libzimg"
3150 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3151
3152 # examples
3153 avio_dir_cmd_deps="avformat avutil"
3154 avio_reading_deps="avformat avcodec avutil"
3155 decoding_encoding_example_deps="avcodec avformat avutil"
3156 demuxing_decoding_example_deps="avcodec avformat avutil"
3157 extract_mvs_example_deps="avcodec avformat avutil"
3158 filter_audio_example_deps="avfilter avutil"
3159 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3160 filtering_video_example_deps="avfilter avcodec avformat avutil"
3161 http_multiclient_example_deps="avformat avutil fork"
3162 metadata_example_deps="avformat avutil"
3163 muxing_example_deps="avcodec avformat avutil swscale"
3164 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
3165 remuxing_example_deps="avcodec avformat avutil"
3166 resampling_audio_example_deps="avutil swresample"
3167 scaling_video_example_deps="avutil swscale"
3168 transcode_aac_example_deps="avcodec avformat swresample"
3169 transcoding_example_deps="avfilter avcodec avformat avutil"
3170
3171 # libraries, in linking order
3172 avcodec_deps="avutil"
3173 avdevice_deps="avformat avcodec avutil"
3174 avfilter_deps="avutil"
3175 avformat_deps="avcodec avutil"
3176 avresample_deps="avutil"
3177 postproc_deps="avutil gpl"
3178 swresample_deps="avutil"
3179 swscale_deps="avutil"
3180
3181 # programs
3182 ffmpeg_deps="avcodec avfilter avformat swresample"
3183 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3184                null_filter
3185                setpts_filter trim_filter"
3186 ffplay_deps="avcodec avformat swscale swresample sdl2"
3187 ffplay_libs='$sdl2_libs'
3188 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3189 ffprobe_deps="avcodec avformat"
3190 ffserver_deps="avformat fork sarestart"
3191 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3192
3193 # documentation
3194 podpages_deps="perl"
3195 manpages_deps="perl pod2man"
3196 htmlpages_deps="perl"
3197 htmlpages_deps_any="makeinfo_html texi2html"
3198 txtpages_deps="perl makeinfo"
3199 doc_deps_any="manpages htmlpages podpages txtpages"
3200
3201 # default parameters
3202
3203 logfile="config.log"
3204
3205 # installation paths
3206 prefix_default="/usr/local"
3207 bindir_default='${prefix}/bin'
3208 datadir_default='${prefix}/share/ffmpeg'
3209 docdir_default='${prefix}/share/doc/ffmpeg'
3210 incdir_default='${prefix}/include'
3211 libdir_default='${prefix}/lib'
3212 mandir_default='${prefix}/share/man'
3213
3214 # toolchain
3215 ar_default="ar"
3216 cc_default="gcc"
3217 cxx_default="g++"
3218 host_cc_default="gcc"
3219 cp_f="cp -f"
3220 doxygen_default="doxygen"
3221 install="install"
3222 ln_s_default="ln -s -f"
3223 nm_default="nm -g"
3224 objformat="elf"
3225 pkg_config_default=pkg-config
3226 ranlib_default="ranlib"
3227 strip_default="strip"
3228 version_script='--version-script'
3229 yasmexe_default="yasm"
3230 windres_default="windres"
3231
3232 # OS
3233 target_os_default=$(tolower $(uname -s))
3234 host_os=$target_os_default
3235
3236 # machine
3237 if test "$target_os_default" = aix; then
3238     arch_default=$(uname -p)
3239     strip_default="strip -X32_64"
3240 else
3241     arch_default=$(uname -m)
3242 fi
3243 cpu="generic"
3244 intrinsics="none"
3245
3246 # configurable options
3247 enable $PROGRAM_LIST
3248 enable $DOCUMENT_LIST
3249 enable $EXAMPLE_LIST
3250 enable $(filter_out avresample $LIBRARY_LIST)
3251 enable stripping
3252
3253 enable asm
3254 enable debug
3255 enable doc
3256 enable faan faandct faanidct
3257 enable optimizations
3258 enable runtime_cpudetect
3259 enable safe_bitstream_reader
3260 enable static
3261 enable swscale_alpha
3262 enable valgrind_backtrace
3263
3264 sws_max_filter_size_default=256
3265 set_default sws_max_filter_size
3266
3267 # build settings
3268 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3269 LIBPREF="lib"
3270 LIBSUF=".a"
3271 FULLNAME='$(NAME)$(BUILDSUF)'
3272 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3273 SLIBPREF="lib"
3274 SLIBSUF=".so"
3275 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3276 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3277 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3278 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3279 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3280 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3281 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3282
3283 asflags_filter=echo
3284 cflags_filter=echo
3285 ldflags_filter=echo
3286
3287 AS_C='-c'
3288 AS_O='-o $@'
3289 CC_C='-c'
3290 CC_E='-E -o $@'
3291 CC_O='-o $@'
3292 CXX_C='-c'
3293 CXX_O='-o $@'
3294 OBJCC_C='-c'
3295 OBJCC_E='-E -o $@'
3296 OBJCC_O='-o $@'
3297 LD_O='-o $@'
3298 LD_LIB='-l%'
3299 LD_PATH='-L'
3300 HOSTCC_C='-c'
3301 HOSTCC_E='-E -o $@'
3302 HOSTCC_O='-o $@'
3303 HOSTLD_O='-o $@'
3304
3305 host_libs='-lm'
3306 host_cflags_filter=echo
3307 host_ldflags_filter=echo
3308
3309 target_path='$(CURDIR)'
3310
3311 # since the object filename is not given with the -MM flag, the compiler
3312 # is only able to print the basename, and we must add the path ourselves
3313 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3314 DEPFLAGS='-MM'
3315
3316 # find source path
3317 if test -f configure; then
3318     source_path=.
3319 else
3320     source_path=$(cd $(dirname "$0"); pwd)
3321     case "$source_path" in
3322         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3323     esac
3324     test -e "$source_path/config.h" &&
3325         die "Out of tree builds are impossible with config.h in source dir."
3326 fi
3327
3328 for v in "$@"; do
3329     r=${v#*=}
3330     l=${v%"$r"}
3331     r=$(sh_quote "$r")
3332     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3333 done
3334
3335 find_things(){
3336     thing=$1
3337     pattern=$2
3338     file=$source_path/$3
3339     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3340 }
3341
3342 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3343 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3344 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3345 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3346 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3347 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3348 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3349 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3350 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3351
3352 find_things_extern(){
3353     thing=$1
3354     pattern=$2
3355     file=$source_path/$3
3356     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3357 }
3358
3359 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3360 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3361
3362 ALL_COMPONENTS="
3363     $BSF_LIST
3364     $DECODER_LIST
3365     $DEMUXER_LIST
3366     $ENCODER_LIST
3367     $FILTER_LIST
3368     $HWACCEL_LIST
3369     $INDEV_LIST
3370     $MUXER_LIST
3371     $OUTDEV_LIST
3372     $PARSER_LIST
3373     $PROTOCOL_LIST
3374 "
3375
3376 for n in $COMPONENT_LIST; do
3377     v=$(toupper ${n%s})_LIST
3378     eval enable \$$v
3379     eval ${n}_if_any="\$$v"
3380 done
3381
3382 enable $ARCH_EXT_LIST
3383
3384 die_unknown(){
3385     echo "Unknown option \"$1\"."
3386     echo "See $0 --help for available options."
3387     exit 1
3388 }
3389
3390 print_in_columns() {
3391     cols=$(expr $ncols / 24)
3392     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3393 }
3394
3395 show_list() {
3396     suffix=_$1
3397     shift
3398     echo $* | sed s/$suffix//g | print_in_columns
3399     exit 0
3400 }
3401
3402 rand_list(){
3403     IFS=', '
3404     set -- $*
3405     unset IFS
3406     for thing; do
3407         comp=${thing%:*}
3408         prob=${thing#$comp}
3409         prob=${prob#:}
3410         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3411         echo "prob ${prob:-0.5}"
3412         printf '%s\n' $comp
3413     done
3414 }
3415
3416 do_random(){
3417     action=$1
3418     shift
3419     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3420     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3421 }
3422
3423 for opt do
3424     optval="${opt#*=}"
3425     case "$opt" in
3426         --extra-ldflags=*)
3427             add_ldflags $optval
3428         ;;
3429         --extra-ldexeflags=*)
3430             add_ldexeflags $optval
3431         ;;
3432         --extra-ldlibflags=*)
3433             add_ldlibflags $optval
3434         ;;
3435         --extra-libs=*)
3436             add_extralibs $optval
3437         ;;
3438         --disable-devices)
3439             disable $INDEV_LIST $OUTDEV_LIST
3440         ;;
3441         --enable-debug=*)
3442             debuglevel="$optval"
3443         ;;
3444         --disable-programs)
3445             disable $PROGRAM_LIST
3446         ;;
3447         --disable-everything)
3448             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3449         ;;
3450         --disable-all)
3451             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3452             disable $LIBRARY_LIST $PROGRAM_LIST doc
3453             enable avutil
3454         ;;
3455         --enable-random|--disable-random)
3456             action=${opt%%-random}
3457             do_random ${action#--} $COMPONENT_LIST
3458         ;;
3459         --enable-random=*|--disable-random=*)
3460             action=${opt%%-random=*}
3461             do_random ${action#--} $optval
3462         ;;
3463         --enable-*=*|--disable-*=*)
3464             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3465             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3466             eval list=\$$(toupper $thing)_LIST
3467             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3468             list=$(filter "$name" $list)
3469             [ "$list" = "" ] && warn "Option $opt did not match anything"
3470             $action $list
3471         ;;
3472         --enable-?*|--disable-?*)
3473             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3474             if is_in $option $COMPONENT_LIST; then
3475                 test $action = disable && action=unset
3476                 eval $action \$$(toupper ${option%s})_LIST
3477             elif is_in $option $CMDLINE_SELECT; then
3478                 $action $option
3479             else
3480                 die_unknown $opt
3481             fi
3482         ;;
3483         --list-*)
3484             NAME="${opt#--list-}"
3485             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3486             NAME=${NAME%s}
3487             eval show_list $NAME \$$(toupper $NAME)_LIST
3488         ;;
3489         --help|-h) show_help
3490         ;;
3491         --fatal-warnings) enable fatal_warnings
3492         ;;
3493         *)
3494             optname="${opt%%=*}"
3495             optname="${optname#--}"
3496             optname=$(echo "$optname" | sed 's/-/_/g')
3497             if is_in $optname $CMDLINE_SET; then
3498                 eval $optname='$optval'
3499             elif is_in $optname $CMDLINE_APPEND; then
3500                 append $optname "$optval"
3501             else
3502                 die_unknown $opt
3503             fi
3504         ;;
3505     esac
3506 done
3507
3508 for e in $env; do
3509     eval "export $e"
3510 done
3511
3512 # Mark specifically enabled, but normally autodetected libraries as requested.
3513 for lib in $AUTODETECT_LIBS; do
3514     enabled $lib && request $lib
3515 done
3516
3517 # Enable platform codecs by default.
3518 enable_weak audiotoolbox
3519
3520 # Enable hwaccels by default.
3521 enable_weak d3d11va dxva2 vaapi vda vdpau videotoolbox_hwaccel xvmc
3522 enable_weak xlib
3523
3524 enable_weak cuda cuvid nvenc vda_framework videotoolbox videotoolbox_encoder
3525
3526 disabled logging && logfile=/dev/null
3527
3528 # Disable all the library-specific components if the library itself
3529 # is disabled, see AVCODEC_LIST and following _LIST variables.
3530
3531 disable_components(){
3532     disabled ${1} && disable $(
3533         eval components="\$$(toupper ${1})_COMPONENTS"
3534         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3535     )
3536 }
3537
3538 map 'disable_components $v' $LIBRARY_LIST
3539
3540 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3541 set >> $logfile
3542
3543 test -n "$valgrind" && toolchain="valgrind-memcheck"
3544
3545 case "$toolchain" in
3546     *-asan)
3547         cc_default="${toolchain%-asan}"
3548         add_cflags  -fsanitize=address
3549         add_ldflags -fsanitize=address
3550     ;;
3551     *-msan)
3552         cc_default="${toolchain%-msan}"
3553         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3554         add_ldflags -fsanitize=memory
3555     ;;
3556     *-tsan)
3557         cc_default="${toolchain%-tsan}"
3558         add_cflags  -fsanitize=thread -fPIE
3559         add_ldflags -fsanitize=thread -pie
3560         case "$toolchain" in
3561             gcc-tsan)
3562                 add_cflags  -fPIC
3563                 add_ldflags -fPIC
3564                 ;;
3565         esac
3566     ;;
3567     *-usan)
3568         cc_default="${toolchain%-usan}"
3569         add_cflags  -fsanitize=undefined
3570         add_ldflags -fsanitize=undefined
3571     ;;
3572     valgrind-*)
3573         target_exec_default="valgrind"
3574         case "$toolchain" in
3575             valgrind-massif)
3576                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3577                 ;;
3578             valgrind-memcheck)
3579                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3580                 ;;
3581         esac
3582     ;;
3583     msvc)
3584         # Check whether the current MSVC version needs the C99 converter.
3585         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3586         # support enough of C99 to build ffmpeg. Default to the new
3587         # behaviour if the regexp was unable to match anything, since this
3588         # successfully parses the version number of existing supported
3589         # versions that require the converter (MSVC 2010 and 2012).
3590         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3591         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3592             cc_default="cl"
3593         else
3594             cc_default="c99wrap cl"
3595         fi
3596         ld_default="$source_path/compat/windows/mslink"
3597         nm_default="dumpbin -symbols"
3598         ar_default="lib"
3599         case "$arch" in
3600         arm*)
3601             as_default="armasm"
3602             ;;
3603         esac
3604         target_os_default="win32"
3605         # Use a relative path for TMPDIR. This makes sure all the
3606         # ffconf temp files are written with a relative path, avoiding
3607         # issues with msys/win32 path conversion for MSVC parameters
3608         # such as -Fo<file> or -out:<file>.
3609         TMPDIR=.
3610     ;;
3611     icl)
3612         cc_default="icl"
3613         ld_default="xilink"
3614         nm_default="dumpbin -symbols"
3615         ar_default="xilib"
3616         target_os_default="win32"
3617         TMPDIR=.
3618     ;;
3619     gcov)
3620         add_cflags  -fprofile-arcs -ftest-coverage
3621         add_ldflags -fprofile-arcs -ftest-coverage
3622     ;;
3623     llvm-cov)
3624         add_cflags -fprofile-arcs -ftest-coverage
3625         add_ldflags --coverage
3626     ;;
3627     hardened)
3628         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3629         add_cflags   -fno-strict-overflow -fstack-protector-all
3630         add_ldflags  -Wl,-z,relro -Wl,-z,now
3631         add_cflags   -fPIE
3632         add_ldexeflags -fPIE -pie
3633     ;;
3634     ?*)
3635         die "Unknown toolchain $toolchain"
3636     ;;
3637 esac
3638
3639 test -n "$cross_prefix" && enable cross_compile
3640
3641 if enabled cross_compile; then
3642     test -n "$arch" && test -n "$target_os" ||
3643         die "Must specify target arch and OS when cross-compiling"
3644 fi
3645
3646 ar_default="${cross_prefix}${ar_default}"
3647 cc_default="${cross_prefix}${cc_default}"
3648 cxx_default="${cross_prefix}${cxx_default}"
3649 nm_default="${cross_prefix}${nm_default}"
3650 pkg_config_default="${cross_prefix}${pkg_config_default}"
3651 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3652     ranlib_default="${cross_prefix}${ranlib_default} -D"
3653 else
3654     ranlib_default="${cross_prefix}${ranlib_default}"
3655 fi
3656 strip_default="${cross_prefix}${strip_default}"
3657 windres_default="${cross_prefix}${windres_default}"
3658
3659 sysinclude_default="${sysroot}/usr/include"
3660
3661 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3662     target_exec target_os yasmexe
3663 enabled cross_compile || host_cc_default=$cc
3664 set_default host_cc
3665
3666 pkg_config_fail_message=""
3667 if ! $pkg_config --version >/dev/null 2>&1; then
3668     warn "$pkg_config not found, library detection may fail."
3669     pkg_config=false
3670 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3671     pkg_config_fail_message="
3672 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3673 fi
3674
3675 if test $doxygen != $doxygen_default && \
3676   ! $doxygen --version >/dev/null 2>&1; then
3677     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3678 fi
3679
3680 exesuf() {
3681     case $1 in
3682         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3683     esac
3684 }
3685
3686 EXESUF=$(exesuf $target_os)
3687 HOSTEXESUF=$(exesuf $host_os)
3688
3689 # set temporary file name
3690 : ${TMPDIR:=$TEMPDIR}
3691 : ${TMPDIR:=$TMP}
3692 : ${TMPDIR:=/tmp}
3693
3694 if [ -n "$tempprefix" ] ; then
3695     mktemp(){
3696         echo $tempprefix.${HOSTNAME}.${UID}
3697     }
3698 elif ! check_cmd mktemp -u XXXXXX; then
3699     # simple replacement for missing mktemp
3700     # NOT SAFE FOR GENERAL USE
3701     mktemp(){
3702         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3703     }
3704 fi
3705
3706 tmpfile(){
3707     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3708         (set -C; exec > $tmp) 2>/dev/null ||
3709         die "Unable to create temporary file in $TMPDIR."
3710     append TMPFILES $tmp
3711     eval $1=$tmp
3712 }
3713
3714 trap 'rm -f -- $TMPFILES' EXIT
3715
3716 tmpfile TMPASM .asm
3717 tmpfile TMPC   .c
3718 tmpfile TMPCPP .cpp
3719 tmpfile TMPE   $EXESUF
3720 tmpfile TMPH   .h
3721 tmpfile TMPM   .m
3722 tmpfile TMPO   .o
3723 tmpfile TMPS   .S
3724 tmpfile TMPSH  .sh
3725 tmpfile TMPV   .ver
3726
3727 unset -f mktemp
3728
3729 chmod +x $TMPE
3730
3731 # make sure we can execute files in $TMPDIR
3732 cat > $TMPSH 2>> $logfile <<EOF
3733 #! /bin/sh
3734 EOF
3735 chmod +x $TMPSH >> $logfile 2>&1
3736 if ! $TMPSH >> $logfile 2>&1; then
3737     cat <<EOF
3738 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3739 variable to another directory and make sure that it is not mounted noexec.
3740 EOF
3741     die "Sanity test failed."
3742 fi
3743
3744 armasm_flags(){
3745     for flag; do
3746         case $flag in
3747             # Filter out MSVC cl.exe options from cflags that shouldn't
3748             # be passed to gas-preprocessor
3749             -M[TD]*)                                            ;;
3750             *)                  echo $flag                      ;;
3751         esac
3752    done
3753 }
3754
3755 ccc_flags(){
3756     for flag; do
3757         case $flag in
3758             -std=c99)           echo -c99                       ;;
3759             -mcpu=*)            echo -arch ${flag#*=}           ;;
3760             -mieee)             echo -ieee                      ;;
3761             -O*|-fast)          echo $flag                      ;;
3762             -fno-math-errno)    echo -assume nomath_errno       ;;
3763             -g)                 echo -g3                        ;;
3764             -Wall)              echo -msg_enable level2         ;;
3765             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3766             -Wl,*)              echo $flag                      ;;
3767             -f*|-W*)                                            ;;
3768             *)                  echo $flag                      ;;
3769         esac
3770    done
3771 }
3772
3773 cparser_flags(){
3774     for flag; do
3775         case $flag in
3776             -Wno-switch)             echo -Wno-switch-enum ;;
3777             -Wno-format-zero-length) ;;
3778             -Wdisabled-optimization) ;;
3779             -Wno-pointer-sign)       echo -Wno-other ;;
3780             *)                       echo $flag ;;
3781         esac
3782     done
3783 }
3784
3785 msvc_common_flags(){
3786     for flag; do
3787         case $flag in
3788             # In addition to specifying certain flags under the compiler
3789             # specific filters, they must be specified here as well or else the
3790             # generic catch all at the bottom will print the original flag.
3791             -Wall)                ;;
3792             -std=c99)             ;;
3793             # Common flags
3794             -fomit-frame-pointer) ;;
3795             -g)                   echo -Z7 ;;
3796             -fno-math-errno)      ;;
3797             -fno-common)          ;;
3798             -fno-signed-zeros)    ;;
3799             -fPIC)                ;;
3800             -mthumb)              ;;
3801             -march=*)             ;;
3802             -lz)                  echo zlib.lib ;;
3803             -lavifil32)           echo vfw32.lib ;;
3804             -lavicap32)           echo vfw32.lib user32.lib ;;
3805             -lx264)               echo libx264.lib ;;
3806             -l*)                  echo ${flag#-l}.lib ;;
3807             -LARGEADDRESSAWARE)   echo $flag ;;
3808             -L*)                  echo -libpath:${flag#-L} ;;
3809             *)                    echo $flag ;;
3810         esac
3811     done
3812 }
3813
3814 msvc_flags(){
3815     msvc_common_flags "$@"
3816     for flag; do
3817         case $flag in
3818             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3819                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3820                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3821                                        -wd4307 \
3822                                        -wd4273 -wd4554 -wd4701 ;;
3823         esac
3824     done
3825 }
3826
3827 icl_flags(){
3828     msvc_common_flags "$@"
3829     for flag; do
3830         case $flag in
3831             # Despite what Intel's documentation says -Wall, which is supported
3832             # on Windows, does enable remarks so disable them here.
3833             -Wall)                echo $flag -Qdiag-disable:remark ;;
3834             -std=c99)             echo -Qstd=c99 ;;
3835             -flto)                echo -ipo ;;
3836         esac
3837     done
3838 }
3839
3840 icc_flags(){
3841     for flag; do
3842         case $flag in
3843             -flto)                echo -ipo ;;
3844             *)                    echo $flag ;;
3845         esac
3846     done
3847 }
3848
3849 pgi_flags(){
3850     for flag; do
3851         case $flag in
3852             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3853             -fomit-frame-pointer) echo -Mnoframe ;;
3854             -g)                   echo -gopt ;;
3855             *)                    echo $flag ;;
3856         esac
3857     done
3858 }
3859
3860 suncc_flags(){
3861     for flag; do
3862         case $flag in
3863             -march=*|-mcpu=*)
3864                 case "${flag#*=}" in
3865                     native)                   echo -xtarget=native       ;;
3866                     v9|niagara)               echo -xarch=sparc          ;;
3867                     ultrasparc)               echo -xarch=sparcvis       ;;
3868                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3869                     i586|pentium)             echo -xchip=pentium        ;;
3870                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3871                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3872                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3873                     pentium4*)          echo -xtarget=pentium4           ;;
3874                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3875                     *-sse3)             echo -xarch=sse3                 ;;
3876                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3877                     bonnell)                   echo -xarch=ssse3         ;;
3878                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3879                     westmere)                  echo -xtarget=westmere    ;;
3880                     silvermont)                echo -xarch=sse4_2        ;;
3881                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3882                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
3883                                                echo -xarch=avx           ;;
3884                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3885                     btver1)                    echo -xarch=amdsse4a      ;;
3886                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
3887                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3888                     k8|opteron|athlon64|athlon-fx)
3889                                                echo -xarch=sse2a         ;;
3890                     athlon*)                   echo -xarch=pentium_proa  ;;
3891                 esac
3892                 ;;
3893             -std=c99)             echo -xc99              ;;
3894             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3895             -fPIC)                echo -KPIC -xcode=pic32 ;;
3896             -W*,*)                echo $flag              ;;
3897             -f*-*|-W*|-mimpure-text)                      ;;
3898             -shared)              echo -G                 ;;
3899             *)                    echo $flag              ;;
3900         esac
3901     done
3902 }
3903
3904 tms470_flags(){
3905     for flag; do
3906         case $flag in
3907             -march=*|-mcpu=*)
3908                 case "${flag#*=}" in
3909                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3910                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3911                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3912                     armv6*|arm11*)          echo -mv=6   ;;
3913                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3914                                             echo -mv=5e  ;;
3915                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3916                 esac
3917                 ;;
3918             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3919             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3920             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3921             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3922             -msoft-float)   echo --float_support=vfplib       ;;
3923             -O[0-3]|-mf=*)  echo $flag                        ;;
3924             -g)             echo -g -mn                       ;;
3925             -pds=*)         echo $flag                        ;;
3926             -D*|-I*)        echo $flag                        ;;
3927             --gcc|--abi=*)  echo $flag                        ;;
3928             -me)            echo $flag                        ;;
3929         esac
3930     done
3931 }
3932
3933 probe_cc(){
3934     pfx=$1
3935     _cc=$2
3936     first=$3
3937
3938     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3939     unset _ld_o _ldflags _ld_lib _ld_path
3940     unset _depflags _DEPCMD _DEPFLAGS
3941     _flags_filter=echo
3942
3943     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3944         true # no-op to avoid reading stdin in following checks
3945     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3946         _type=llvm_gcc
3947         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3948         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3949         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3950         _cflags_speed='-O3'
3951         _cflags_size='-Os'
3952     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3953         _type=gcc
3954         gcc_version=$($_cc --version | head -n1)
3955         gcc_basever=$($_cc -dumpversion)
3956         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3957         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3958         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3959         case $gcc_basever in
3960             2) ;;
3961             2.*) ;;
3962             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
3963         esac
3964         if [ "$first" = true ]; then
3965             case $gcc_basever in
3966                 4.2*)
3967                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
3968             esac
3969         fi
3970         _cflags_speed='-O3'
3971         _cflags_size='-Os'
3972     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3973         _type=icc
3974         _ident=$($_cc --version | head -n1)
3975         _depflags='-MMD'
3976         _cflags_speed='-O3'
3977         _cflags_size='-Os'
3978         _cflags_noopt='-O1'
3979         _flags_filter=icc_flags
3980     elif $_cc -v 2>&1 | grep -q xlc; then
3981         _type=xlc
3982         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3983         _cflags_speed='-O5'
3984         _cflags_size='-O5 -qcompact'
3985     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3986         _type=ccc
3987         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3988         _DEPFLAGS='-M'
3989         _cflags_speed='-fast'
3990         _cflags_size='-O1'
3991         _flags_filter=ccc_flags
3992     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3993         test -d "$sysroot" || die "No valid sysroot specified."
3994         _type=armcc
3995         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3996         armcc_conf="$PWD/armcc.conf"
3997         $_cc --arm_linux_configure                 \
3998              --arm_linux_config_file="$armcc_conf" \
3999              --configure_sysroot="$sysroot"        \
4000              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4001              die "Error creating armcc configuration file."
4002         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4003         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4004         as_default="${cross_prefix}gcc"
4005         _depflags='-MMD'
4006         _cflags_speed='-O3'
4007         _cflags_size='-Os'
4008     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
4009         _type=tms470
4010         _ident=$($_cc -version | head -n1 | tr -s ' ')
4011         _flags='--gcc --abi=eabi -me'
4012         _cc_e='-ppl -fe=$@'
4013         _cc_o='-fe=$@'
4014         _depflags='-ppa -ppd=$(@:.o=.d)'
4015         _cflags_speed='-O3 -mf=5'
4016         _cflags_size='-O3 -mf=2'
4017         _flags_filter=tms470_flags
4018     elif $_cc -v 2>&1 | grep -q clang; then
4019         _type=clang
4020         _ident=$($_cc --version 2>/dev/null | head -n1)
4021         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4022         _cflags_speed='-O3'
4023         _cflags_size='-Os'
4024     elif $_cc -V 2>&1 | grep -q Sun; then
4025         _type=suncc
4026         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4027         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4028         _DEPFLAGS='-xM1 -xc99'
4029         _ldflags='-std=c99'
4030         _cflags_speed='-O5'
4031         _cflags_size='-O5 -xspace'
4032         _flags_filter=suncc_flags
4033     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4034         _type=pathscale
4035         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4036         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4037         _cflags_speed='-O2'
4038         _cflags_size='-Os'
4039         _flags_filter='filter_out -Wdisabled-optimization'
4040     elif $_cc -v 2>&1 | grep -q Open64; then
4041         _type=open64
4042         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4043         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4044         _cflags_speed='-O2'
4045         _cflags_size='-Os'
4046         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4047     elif $_cc -V 2>&1 | grep -q Portland; then
4048         _type=pgi
4049         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
4050         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
4051         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
4052         _cflags_size="-O2 -Munroll=c:1 $opt_common"
4053         _cflags_noopt="-O"
4054         _flags_filter=pgi_flags
4055     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4056         _type=armasm
4057         _ident=$($_cc | head -n1)
4058         # 4509: "This form of conditional instruction is deprecated"
4059         _flags="-nologo -ignore 4509"
4060         _flags_filter=armasm_flags
4061     elif $_cc 2>&1 | grep -q Intel; then
4062         _type=icl
4063         _ident=$($_cc 2>&1 | head -n1)
4064         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4065         # Not only is O3 broken on 13.x+ but it is slower on all previous
4066         # versions (tested) as well.
4067         _cflags_speed="-O2"
4068         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4069         if $_cc 2>&1 | grep -q Linker; then
4070             _ld_o='-out:$@'
4071         else
4072             _ld_o='-Fe$@'
4073         fi
4074         _cc_o='-Fo$@'
4075         _cc_e='-P'
4076         _flags_filter=icl_flags
4077         _ld_lib='lib%.a'
4078         _ld_path='-libpath:'
4079         # -Qdiag-error to make icl error when seeing certain unknown arguments
4080         _flags='-nologo -Qdiag-error:4044,10157'
4081         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4082         # with MSVC which enables it by default.
4083         _cflags='-D_USE_MATH_DEFINES -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4084         disable stripping
4085     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4086         _type=msvc
4087         _ident=$($_cc 2>&1 | head -n1)
4088         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4089         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4090         _cflags_speed="-O2"
4091         _cflags_size="-O1"
4092         if $_cc -nologo- 2>&1 | grep -q Linker; then
4093             _ld_o='-out:$@'
4094         else
4095             _ld_o='-Fe$@'
4096         fi
4097         _cc_o='-Fo$@'
4098         _cc_e='-P -Fi$@'
4099         _flags_filter=msvc_flags
4100         _ld_lib='lib%.a'
4101         _ld_path='-libpath:'
4102         _flags='-nologo'
4103         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS'
4104         disable stripping
4105     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4106         _type=cparser
4107         _ident=$($_cc --version | head -n1)
4108         _depflags='-MMD'
4109         _cflags_speed='-O4'
4110         _cflags_size='-O2'
4111         _flags_filter=cparser_flags
4112     fi
4113
4114     eval ${pfx}_type=\$_type
4115     eval ${pfx}_ident=\$_ident
4116 }
4117
4118 set_ccvars(){
4119     eval ${1}_C=\${_cc_c-\${${1}_C}}
4120     eval ${1}_E=\${_cc_e-\${${1}_E}}
4121     eval ${1}_O=\${_cc_o-\${${1}_O}}
4122
4123     if [ -n "$_depflags" ]; then
4124         eval ${1}_DEPFLAGS=\$_depflags
4125     else
4126         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4127         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4128         eval DEP${1}FLAGS=\$_flags
4129     fi
4130 }
4131
4132 probe_cc cc "$cc" "true"
4133 cflags_filter=$_flags_filter
4134 cflags_speed=$_cflags_speed
4135 cflags_size=$_cflags_size
4136 cflags_noopt=$_cflags_noopt
4137 add_cflags $_flags $_cflags
4138 cc_ldflags=$_ldflags
4139 set_ccvars CC
4140
4141 probe_cc hostcc "$host_cc"
4142 host_cflags_filter=$_flags_filter
4143 add_host_cflags  $_flags $_cflags
4144 set_ccvars HOSTCC
4145
4146 test -n "$cc_type" && enable $cc_type ||
4147     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4148
4149 : ${as_default:=$cc}
4150 : ${objcc_default:=$cc}
4151 : ${dep_cc_default:=$cc}
4152 : ${ld_default:=$cc}
4153 : ${host_ld_default:=$host_cc}
4154 set_default ar as objcc dep_cc ld ln_s host_ld windres
4155
4156 probe_cc as "$as"
4157 asflags_filter=$_flags_filter
4158 add_asflags $_flags $_cflags
4159 set_ccvars AS
4160
4161 probe_cc objcc "$objcc"
4162 objcflags_filter=$_flags_filter
4163 add_objcflags $_flags $_cflags
4164 set_ccvars OBJC
4165
4166 probe_cc ld "$ld"
4167 ldflags_filter=$_flags_filter
4168 add_ldflags $_flags $_ldflags
4169 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4170 LD_O=${_ld_o-$LD_O}
4171 LD_LIB=${_ld_lib-$LD_LIB}
4172 LD_PATH=${_ld_path-$LD_PATH}
4173
4174 probe_cc hostld "$host_ld"
4175 host_ldflags_filter=$_flags_filter
4176 add_host_ldflags $_flags $_ldflags
4177 HOSTLD_O=${_ld_o-$HOSTLD_O}
4178
4179 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4180     probe_cc depcc "$dep_cc"
4181     CCDEP=${_DEPCMD:-$DEPCMD}
4182     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4183     DEPCCFLAGS=$_flags
4184 fi
4185
4186 if $ar 2>&1 | grep -q Microsoft; then
4187     arflags="-nologo"
4188     ar_o='-out:$@'
4189 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
4190     arflags="rq"
4191     ar_o='$@'
4192 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
4193     arflags='-Xany -r -c'
4194     ar_o='$@'
4195 elif $ar 2>&1 | grep -q "\[D\] "; then
4196     arflags="rcD"
4197     ar_o='$@'
4198 else
4199     arflags="rc"
4200     ar_o='$@'
4201 fi
4202
4203 add_cflags $extra_cflags
4204 add_cxxflags $extra_cxxflags
4205 add_objcflags $extra_objcflags
4206 add_asflags $extra_cflags
4207
4208 if test -n "$sysroot"; then
4209     case "$cc_type" in
4210         gcc|llvm_gcc|clang)
4211             add_cppflags --sysroot="$sysroot"
4212             add_ldflags --sysroot="$sysroot"
4213 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
4214             add_cppflags -isysroot "$sysroot"
4215             add_ldflags -isysroot "$sysroot"
4216         ;;
4217         tms470)
4218             add_cppflags -I"$sysinclude"
4219             add_ldflags  --sysroot="$sysroot"
4220         ;;
4221     esac
4222 fi
4223
4224 if test "$cpu" = host; then
4225     enabled cross_compile &&
4226         die "--cpu=host makes no sense when cross-compiling."
4227
4228     case "$cc_type" in
4229         gcc|llvm_gcc)
4230             check_native(){
4231                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4232                 sed -n "/cc1.*$1=/{
4233                             s/.*$1=\\([^ ]*\\).*/\\1/
4234                             p
4235                             q
4236                         }" $TMPE
4237             }
4238             cpu=$(check_native -march || check_native -mcpu)
4239         ;;
4240         clang)
4241             check_native(){
4242                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4243                 sed -n "/cc1.*-target-cpu /{
4244                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4245                             p
4246                             q
4247                         }" $TMPE
4248             }
4249             cpu=$(check_native -march)
4250         ;;
4251     esac
4252
4253     test "${cpu:-host}" = host &&
4254         die "--cpu=host not supported with compiler $cc"
4255 fi
4256
4257 # Deal with common $arch aliases
4258 case "$arch" in
4259     aarch64|arm64)
4260         arch="aarch64"
4261     ;;
4262     arm*|iPad*|iPhone*)
4263         arch="arm"
4264     ;;
4265     mips*|IP*)
4266         case "$arch" in
4267         *el)
4268             add_cppflags -EL
4269             add_ldflags -EL
4270         ;;
4271         *eb)
4272             add_cppflags -EB
4273             add_ldflags -EB
4274         ;;
4275         esac
4276         arch="mips"
4277     ;;
4278     parisc*|hppa*)
4279         arch="parisc"
4280     ;;
4281     "Power Macintosh"|ppc*|powerpc*)
4282         arch="ppc"
4283     ;;
4284     s390|s390x)
4285         arch="s390"
4286     ;;
4287     sh4|sh)
4288         arch="sh4"
4289     ;;
4290     sun4*|sparc*)
4291         arch="sparc"
4292     ;;
4293     tilegx|tile-gx)
4294         arch="tilegx"
4295     ;;
4296     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4297         arch="x86"
4298     ;;
4299 esac
4300
4301 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4302 enable $arch
4303
4304 # Add processor-specific flags
4305 if enabled aarch64; then
4306
4307     case $cpu in
4308         armv*)
4309             cpuflags="-march=$cpu"
4310         ;;
4311         *)
4312             cpuflags="-mcpu=$cpu"
4313         ;;
4314     esac
4315
4316 elif enabled alpha; then
4317
4318     cpuflags="-mcpu=$cpu"
4319
4320 elif enabled arm; then
4321
4322     check_arm_arch() {
4323         check_cpp_condition stddef.h \
4324             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4325             $cpuflags
4326     }
4327
4328     probe_arm_arch() {
4329         if   check_arm_arch 4;        then echo armv4
4330         elif check_arm_arch 4T;       then echo armv4t
4331         elif check_arm_arch 5;        then echo armv5
4332         elif check_arm_arch 5E;       then echo armv5e
4333         elif check_arm_arch 5T;       then echo armv5t
4334         elif check_arm_arch 5TE;      then echo armv5te
4335         elif check_arm_arch 5TEJ;     then echo armv5te
4336         elif check_arm_arch 6;        then echo armv6
4337         elif check_arm_arch 6J;       then echo armv6j
4338         elif check_arm_arch 6K;       then echo armv6k
4339         elif check_arm_arch 6Z;       then echo armv6z
4340         elif check_arm_arch 6ZK;      then echo armv6zk
4341         elif check_arm_arch 6T2;      then echo armv6t2
4342         elif check_arm_arch 7;        then echo armv7
4343         elif check_arm_arch 7A  7_A;  then echo armv7-a
4344         elif check_arm_arch 7S;       then echo armv7-a
4345         elif check_arm_arch 7R  7_R;  then echo armv7-r
4346         elif check_arm_arch 7M  7_M;  then echo armv7-m
4347         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4348         elif check_arm_arch 8A  8_A;  then echo armv8-a
4349         fi
4350     }
4351
4352     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4353
4354     case $cpu in
4355         armv*)
4356             cpuflags="-march=$cpu"
4357             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4358         ;;
4359         *)
4360             cpuflags="-mcpu=$cpu"
4361             case $cpu in
4362                 cortex-a*)                               subarch=armv7a  ;;
4363                 cortex-r*)                               subarch=armv7r  ;;
4364                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4365                 arm11*)                                  subarch=armv6   ;;
4366                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4367                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4368                 *)                             subarch=$(probe_arm_arch) ;;
4369             esac
4370         ;;
4371     esac
4372
4373     case "$subarch" in
4374         armv5t*)    enable fast_clz                ;;
4375         armv[6-8]*)
4376             enable fast_clz
4377             disabled fast_unaligned || enable fast_unaligned
4378             ;;
4379     esac
4380
4381 elif enabled avr32; then
4382
4383     case $cpu in
4384         ap7[02]0[0-2])
4385             subarch="avr32_ap"
4386             cpuflags="-mpart=$cpu"
4387         ;;
4388         ap)
4389             subarch="avr32_ap"
4390             cpuflags="-march=$cpu"
4391         ;;
4392         uc3[ab]*)
4393             subarch="avr32_uc"
4394             cpuflags="-mcpu=$cpu"
4395         ;;
4396         uc)
4397             subarch="avr32_uc"
4398             cpuflags="-march=$cpu"
4399         ;;
4400     esac
4401
4402 elif enabled bfin; then
4403
4404     cpuflags="-mcpu=$cpu"
4405
4406 elif enabled mips; then
4407
4408     cpuflags="-march=$cpu"
4409
4410     if [ "$cpu" != "generic" ]; then
4411         disable mips32r2
4412         disable mips32r5
4413         disable mips64r2
4414         disable mips32r6
4415         disable mips64r6
4416         disable loongson2
4417         disable loongson3
4418
4419         case $cpu in
4420             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4421                 enable mips32r2
4422                 disable msa
4423             ;;
4424             p5600|i6400|p6600)
4425                 disable mipsdsp
4426                 disable mipsdspr2
4427             ;;
4428             loongson*)
4429                 enable loongson2
4430                 enable loongson3
4431                 enable local_aligned_8 local_aligned_16 local_aligned_32
4432                 enable simd_align_16
4433                 enable fast_64bit
4434                 enable fast_clz
4435                 enable fast_cmov
4436                 enable fast_unaligned
4437                 disable aligned_stack
4438                 disable mipsfpu
4439                 disable mipsdsp
4440                 disable mipsdspr2
4441                 case $cpu in
4442                     loongson3*)
4443                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4444                     ;;
4445                     loongson2e)
4446                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4447                     ;;
4448                     loongson2f)
4449                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4450                     ;;
4451                 esac
4452             ;;
4453             *)
4454                 # Unknown CPU. Disable everything.
4455                 warn "unknown CPU. Disabling all MIPS optimizations."
4456                 disable mipsfpu
4457                 disable mipsdsp
4458                 disable mipsdspr2
4459                 disable msa
4460                 disable mmi
4461             ;;
4462         esac
4463
4464         case $cpu in
4465             24kc)
4466                 disable mipsfpu
4467                 disable mipsdsp
4468                 disable mipsdspr2
4469             ;;
4470             24kf*)
4471                 disable mipsdsp
4472                 disable mipsdspr2
4473             ;;
4474             24kec|34kc|1004kc)
4475                 disable mipsfpu
4476                 disable mipsdspr2
4477             ;;
4478             24kef*|34kf*|1004kf*)
4479                 disable mipsdspr2
4480             ;;
4481             74kc)
4482                 disable mipsfpu
4483             ;;
4484             p5600)
4485                 enable mips32r5
4486                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4487             ;;
4488             i6400)
4489                 enable mips64r6
4490                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4491             ;;
4492             p6600)
4493                 enable mips64r6
4494                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4495             ;;
4496         esac
4497     else
4498         # We do not disable anything. Is up to the user to disable the unwanted features.
4499         warn 'generic cpu selected'
4500     fi
4501
4502 elif enabled ppc; then
4503
4504     disable ldbrx
4505
4506     case $(tolower $cpu) in
4507         601|ppc601|powerpc601)
4508             cpuflags="-mcpu=601"
4509             disable altivec
4510         ;;
4511         603*|ppc603*|powerpc603*)
4512             cpuflags="-mcpu=603"
4513             disable altivec
4514         ;;
4515         604*|ppc604*|powerpc604*)
4516             cpuflags="-mcpu=604"
4517             disable altivec
4518         ;;
4519         g3|75*|ppc75*|powerpc75*)
4520             cpuflags="-mcpu=750"
4521             disable altivec
4522         ;;
4523         g4|745*|ppc745*|powerpc745*)
4524             cpuflags="-mcpu=7450"
4525             disable vsx
4526         ;;
4527         74*|ppc74*|powerpc74*)
4528             cpuflags="-mcpu=7400"
4529             disable vsx
4530         ;;
4531         g5|970|ppc970|powerpc970)
4532             cpuflags="-mcpu=970"
4533             disable vsx
4534         ;;
4535         power[3-6]*)
4536             cpuflags="-mcpu=$cpu"
4537             disable vsx
4538         ;;
4539         power[7-8]*)
4540             cpuflags="-mcpu=$cpu"
4541         ;;
4542         cell)
4543             cpuflags="-mcpu=cell"
4544             enable ldbrx
4545             disable vsx
4546         ;;
4547         e500mc)
4548             cpuflags="-mcpu=e500mc"
4549             disable altivec
4550         ;;
4551         e500v2)
4552             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4553             disable altivec
4554             disable dcbzl
4555         ;;
4556         e500)
4557             cpuflags="-mcpu=8540 -mhard-float"
4558             disable altivec
4559             disable dcbzl
4560         ;;
4561     esac
4562
4563 elif enabled sparc; then
4564
4565     case $cpu in
4566         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4567             cpuflags="-mcpu=$cpu"
4568         ;;
4569         ultrasparc*|niagara[234])
4570             cpuflags="-mcpu=$cpu"
4571         ;;
4572     esac
4573
4574 elif enabled x86; then
4575
4576     case $cpu in
4577         i[345]86|pentium)
4578             cpuflags="-march=$cpu"
4579             disable i686
4580             disable mmx
4581         ;;
4582         # targets that do NOT support nopl and conditional mov (cmov)
4583         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4584             cpuflags="-march=$cpu"
4585             disable i686
4586         ;;
4587         # targets that do support nopl and conditional mov (cmov)
4588         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4589         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4590         |amdfam10|barcelona|b[dt]ver*|znver*)
4591             cpuflags="-march=$cpu"
4592             enable i686
4593             enable fast_cmov
4594         ;;
4595         # targets that do support conditional mov but on which it's slow
4596         pentium4|pentium4m|prescott|nocona)
4597             cpuflags="-march=$cpu"
4598             enable i686
4599             disable fast_cmov
4600         ;;
4601     esac
4602
4603 fi
4604
4605 if [ "$cpu" != generic ]; then
4606     add_cflags  $cpuflags
4607     add_asflags $cpuflags
4608     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4609 fi
4610
4611 # compiler sanity check
4612 check_exec <<EOF
4613 int main(void){ return 0; }
4614 EOF
4615 if test "$?" != 0; then
4616     echo "$cc is unable to create an executable file."
4617     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4618         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4619         echo "Only do this if you know what cross compiling means."
4620     fi
4621     die "C compiler test failed."
4622 fi
4623
4624 add_cppflags -D_ISOC99_SOURCE
4625 add_cxxflags -D__STDC_CONSTANT_MACROS
4626 add_cxxflags -std=c++98
4627
4628 # some compilers silently accept -std=c11, so we also need to check that the
4629 # version macro is defined properly
4630 if test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L"; then
4631     add_cflags -std=c11
4632 else
4633     check_cflags -std=c99
4634 fi
4635
4636 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4637 #include <stdlib.h>
4638 EOF
4639 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4640 #include <stdlib.h>
4641 EOF
4642
4643 add_host_cppflags -D_ISOC99_SOURCE
4644 check_host_cflags -std=c99
4645 check_host_cflags -Wall
4646 check_host_cflags -O3
4647
4648 check_64bit(){
4649     arch32=$1
4650     arch64=$2
4651     expr=$3
4652     check_code cc "" "int test[2*($expr) - 1]" &&
4653         subarch=$arch64 || subarch=$arch32
4654 }
4655
4656 case "$arch" in
4657     aarch64|alpha|ia64)
4658         spic=$shared
4659     ;;
4660     mips)
4661         check_64bit mips mips64 '_MIPS_SIM > 1'
4662         spic=$shared
4663     ;;
4664     parisc)
4665         check_64bit parisc parisc64 'sizeof(void *) > 4'
4666         spic=$shared
4667     ;;
4668     ppc)
4669         check_64bit ppc ppc64 'sizeof(void *) > 4'
4670         spic=$shared
4671     ;;
4672     s390)
4673         check_64bit s390 s390x 'sizeof(void *) > 4'
4674         spic=$shared
4675     ;;
4676     sparc)
4677         check_64bit sparc sparc64 'sizeof(void *) > 4'
4678         spic=$shared
4679     ;;
4680     x86)
4681         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4682         # Treat x32 as x64 for now. Note it also needs spic=$shared
4683         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4684             subarch=x86_64
4685         if test "$subarch" = "x86_64"; then
4686             spic=$shared
4687         fi
4688     ;;
4689     ppc)
4690         check_cc <<EOF && subarch="ppc64"
4691         int test[(int)sizeof(char*) - 7];
4692 EOF
4693     ;;
4694 esac
4695
4696 enable $subarch
4697 enabled spic && enable_weak pic
4698
4699 # OS specific
4700 case $target_os in
4701     aix)
4702         SHFLAGS=-shared
4703         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4704         enabled shared && add_ldflags -Wl,-brtl
4705         ;;
4706     android)
4707         disable symver
4708         enable section_data_rel_ro
4709         SLIB_INSTALL_NAME='$(SLIBNAME)'
4710         SLIB_INSTALL_LINKS=
4711         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4712         ;;
4713     haiku)
4714         prefix_default="/boot/common"
4715         network_extralibs="-lnetwork"
4716         host_libs=
4717         ;;
4718     sunos)
4719         SHFLAGS='-shared -Wl,-h,$$(@F)'
4720         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4721         network_extralibs="-lsocket -lnsl"
4722         add_cppflags -D__EXTENSIONS__
4723         # When using suncc to build, the Solaris linker will mark
4724         # an executable with each instruction set encountered by
4725         # the Solaris assembler.  As our libraries contain their own
4726         # guards for processor-specific code, instead suppress
4727         # generation of the HWCAPS ELF section on Solaris x86 only.
4728         enabled_all suncc x86 &&
4729             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4730             add_ldflags -Wl,-M,mapfile
4731         nm_default='nm -P -g'
4732         version_script='-M'
4733         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
4734         ;;
4735     netbsd)
4736         disable symver
4737         oss_indev_extralibs="-lossaudio"
4738         oss_outdev_extralibs="-lossaudio"
4739         enabled gcc || check_ldflags -Wl,-zmuldefs
4740         ;;
4741     openbsd|bitrig)
4742         disable symver
4743         SHFLAGS='-shared'
4744         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4745         SLIB_INSTALL_LINKS=
4746         oss_indev_extralibs="-lossaudio"
4747         oss_outdev_extralibs="-lossaudio"
4748         ;;
4749     dragonfly)
4750         disable symver
4751         ;;
4752     freebsd)
4753         ;;
4754     bsd/os)
4755         add_extralibs -lpoll -lgnugetopt
4756         strip="strip -d"
4757         ;;
4758     darwin)
4759         enabled ppc && add_asflags -force_cpusubtype_ALL
4760         install_name_dir_default='$(SHLIBDIR)'
4761         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4762         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4763         strip="${strip} -x"
4764         add_ldflags -Wl,-dynamic,-search_paths_first
4765         SLIBSUF=".dylib"
4766         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4767         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4768         objformat="macho"
4769         enabled x86_64 && objformat="macho64"
4770         enabled_any pic shared x86_64 ||
4771             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4772         check_header dispatch/dispatch.h &&
4773             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
4774         version_script='-exported_symbols_list'
4775         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
4776         ;;
4777     msys*)
4778         die "Native MSYS builds are discouraged, please use the MINGW environment."
4779         ;;
4780     mingw32*|mingw64*)
4781         if test $target_os = "mingw32ce"; then
4782             disable network
4783         else
4784             target_os=mingw32
4785         fi
4786         decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
4787         decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
4788         LIBTARGET=i386
4789         if enabled x86_64; then
4790             LIBTARGET="i386:x86-64"
4791         elif enabled arm; then
4792             LIBTARGET=arm-wince
4793         fi
4794         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4795         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4796         shlibdir_default="$bindir_default"
4797         SLIBPREF=""
4798         SLIBSUF=".dll"
4799         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4800         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4801         dlltool="${cross_prefix}dlltool"
4802         if check_cmd lib.exe -list; then
4803             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4804             if enabled x86_64; then
4805                 LIBTARGET=x64
4806             fi
4807         elif check_cmd $dlltool --version; then
4808             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4809         fi
4810         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4811         SLIB_INSTALL_LINKS=
4812         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4813         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4814         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--disable-auto-image-base'
4815         objformat="win32"
4816         ranlib=:
4817         enable dos_paths
4818         check_ldflags -Wl,--nxcompat,--dynamicbase
4819         # Lets work around some stupidity in binutils.
4820         # ld will strip relocations from executables even though we need them
4821         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4822         # however ld then forgets what the entry point should be (oops) so we
4823         # have to manually (re)set it.
4824         if enabled x86_32; then
4825             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
4826         elif enabled x86_64; then
4827             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
4828             check_ldflags -Wl,--high-entropy-va # binutils 2.25
4829             # Set image base >4GB for extra entropy with HEASLR
4830             add_ldexeflags -Wl,--image-base,0x140000000
4831             append SHFLAGS -Wl,--image-base,0x180000000
4832         fi
4833         ;;
4834     win32|win64)
4835         disable symver
4836         if enabled shared; then
4837             # Link to the import library instead of the normal static library
4838             # for shared libs.
4839             LD_LIB='%.lib'
4840             # Cannot build both shared and static libs with MSVC or icl.
4841             disable static
4842         fi
4843         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4844         shlibdir_default="$bindir_default"
4845         SLIBPREF=""
4846         SLIBSUF=".dll"
4847         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4848         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4849         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4850         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4851         SLIB_INSTALL_LINKS=
4852         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4853         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4854         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4855         objformat="win32"
4856         ranlib=:
4857         enable dos_paths
4858         ;;
4859     cygwin*)
4860         target_os=cygwin
4861         shlibdir_default="$bindir_default"
4862         SLIBPREF="cyg"
4863         SLIBSUF=".dll"
4864         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4865         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4866         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4867         SLIB_INSTALL_LINKS=
4868         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4869         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4870         objformat="win32"
4871         enable dos_paths
4872         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4873         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4874         ;;
4875     *-dos|freedos|opendos)
4876         network_extralibs="-lsocket"
4877         objformat="coff"
4878         enable dos_paths
4879         add_cppflags -U__STRICT_ANSI__
4880         ;;
4881     linux)
4882         enable dv1394
4883         enable section_data_rel_ro
4884         ;;
4885     irix*)
4886         target_os=irix
4887         ranlib="echo ignoring ranlib"
4888         ;;
4889     os/2*)
4890         strip="lxlite -CS"
4891         objformat="aout"
4892         add_cppflags -D_GNU_SOURCE
4893         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4894         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4895         LIBSUF="_s.a"
4896         SLIBPREF=""
4897         SLIBSUF=".dll"
4898         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4899         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4900         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
4901             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
4902             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
4903             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
4904             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
4905         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
4906             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
4907         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4908         SLIB_INSTALL_LINKS=
4909         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
4910         enable dos_paths
4911         enable_weak os2threads
4912         ;;
4913     gnu/kfreebsd)
4914         add_cppflags -D_BSD_SOURCE
4915         ;;
4916     gnu)
4917         ;;
4918     qnx)
4919         add_cppflags -D_QNX_SOURCE
4920         network_extralibs="-lsocket"
4921         ;;
4922     symbian)
4923         SLIBSUF=".dll"
4924         enable dos_paths
4925         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4926         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4927         add_ldflags -Wl,--target1-abs,--no-undefined \
4928                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4929                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4930         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4931                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4932                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4933         ;;
4934     osf1)
4935         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4936         ;;
4937     minix)
4938         ;;
4939     plan9)
4940         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4941                      -D_REENTRANT_SOURCE        \
4942                      -D_RESEARCH_SOURCE         \
4943                      -DFD_SETSIZE=96            \
4944                      -DHAVE_SOCK_OPTS
4945         add_compat strtod.o strtod=avpriv_strtod
4946         network_extralibs='-lbsd'
4947         exeobjs=compat/plan9/main.o
4948         disable ffserver
4949         cp_f='cp'
4950         ;;
4951     none)
4952         ;;
4953     *)
4954         die "Unknown OS '$target_os'."
4955         ;;
4956 esac
4957
4958 # test if creating links works
4959 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
4960 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
4961 mkdir "$link_dest"
4962 $ln_s "$link_dest" "$link_name"
4963 touch "$link_dest/test_file"
4964 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
4965     # create link to source path
4966     [ -e src ] && rm src
4967     $ln_s "$source_path" src
4968     source_link=src
4969 else
4970     # creating directory links doesn't work
4971     # fall back to using the full source path
4972     source_link="$source_path"
4973 fi
4974 # cleanup
4975 rm -r "$link_dest"
4976 rm -r "$link_name"
4977
4978 # determine libc flavour
4979
4980 probe_libc(){
4981     pfx=$1
4982     pfx_no_=${pfx%_}
4983     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4984     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4985         eval ${pfx}libc_type=uclibc
4986         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4987     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4988         eval ${pfx}libc_type=glibc
4989         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4990     # MinGW headers can be installed on Cygwin, so check for newlib first.
4991     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4992         eval ${pfx}libc_type=newlib
4993         add_${pfx}cppflags -U__STRICT_ANSI__
4994     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4995     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4996         eval ${pfx}libc_type=mingw64
4997         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
4998             add_compat msvcrt/snprintf.o
4999             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5000         fi
5001         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5002         eval test \$${pfx_no_}cc_type = "gcc" &&
5003             add_${pfx}cppflags -D__printf__=__gnu_printf__
5004     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5005          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5006         eval ${pfx}libc_type=mingw32
5007         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5008             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5009             die "ERROR: MinGW32 runtime version must be >= 3.15."
5010         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5011         check_${pfx}cpp_condition _mingw.h "defined(_WIN32_WINNT) && _WIN32_WINNT >= 0x0502" ||
5012             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
5013         eval test \$${pfx_no_}cc_type = "gcc" &&
5014             add_${pfx}cppflags -D__printf__=__gnu_printf__
5015     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5016         eval ${pfx}libc_type=msvcrt
5017         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5018             if [ "$pfx" = host_ ]; then
5019                 add_host_cppflags -Dsnprintf=_snprintf
5020             else
5021                 add_compat strtod.o strtod=avpriv_strtod
5022                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5023                                              _snprintf=avpriv_snprintf  \
5024                                              vsnprintf=avpriv_vsnprintf
5025             fi
5026         fi
5027         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5028         # 0x601 by default unless something else is set by the user.
5029         # This can easily lead to us detecting functions only present
5030         # in such new versions and producing binaries requiring windows 7.0.
5031         # Therefore explicitly set the default to XP unless the user has
5032         # set something else on the command line.
5033         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5034         # family. For these cases, configure is free to use any functions
5035         # found in the SDK headers by default. (Alternatively, we could force
5036         # _WIN32_WINNT to 0x0602 in that case.)
5037         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5038             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
5039 #ifdef WINAPI_FAMILY
5040 #include <winapifamily.h>
5041 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5042 #error not desktop
5043 #endif
5044 #endif
5045 EOF
5046     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5047         eval ${pfx}libc_type=klibc
5048     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5049         eval ${pfx}libc_type=bionic
5050     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5051         eval ${pfx}libc_type=solaris
5052         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5053     fi
5054     check_${pfx}cc <<EOF
5055 #include <time.h>
5056 void *v = localtime_r;
5057 EOF
5058 test "$?" != 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
5059 #include <time.h>
5060 void *v = localtime_r;
5061 EOF
5062
5063 }
5064
5065 probe_libc
5066 test -n "$libc_type" && enable libc_$libc_type
5067 probe_libc host_
5068 test -n "$host_libc_type" && enable host_libc_$host_libc_type
5069
5070 case $libc_type in
5071     bionic)
5072         add_compat strtod.o strtod=avpriv_strtod
5073         ;;
5074 esac
5075
5076 # hacks for compiler/libc/os combinations
5077
5078 if enabled_all tms470 libc_glibc; then
5079     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
5080     add_cppflags -D__USER_LABEL_PREFIX__=
5081     add_cppflags -D__builtin_memset=memset
5082     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
5083     add_cflags   -pds=48    # incompatible redefinition of macro
5084 fi
5085
5086 if enabled_all ccc libc_glibc; then
5087     add_ldflags -Wl,-z,now  # calls to libots crash without this
5088 fi
5089
5090 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5091     add_cppflags '-I\$(SRC_PATH)/compat/float'
5092
5093 esc(){
5094     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
5095 }
5096
5097 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
5098
5099 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5100
5101 set_default libdir
5102 : ${shlibdir_default:="$libdir"}
5103 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5104
5105 set_default $PATHS_LIST
5106 set_default nm
5107
5108 # we need to build at least one lib type
5109 if ! enabled_any static shared; then
5110     cat <<EOF
5111 At least one library type must be built.
5112 Specify --enable-static to build the static libraries or --enable-shared to
5113 build the shared libraries as well. To only build the shared libraries specify
5114 --disable-static in addition to --enable-shared.
5115 EOF
5116     exit 1
5117 fi
5118
5119 die_license_disabled() {
5120     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
5121 }
5122
5123 die_license_disabled_gpl() {
5124     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
5125 }
5126
5127 die_license_disabled gpl frei0r
5128 die_license_disabled gpl libcdio
5129 die_license_disabled gpl librubberband
5130 die_license_disabled gpl libsmbclient
5131 die_license_disabled gpl libvidstab
5132 die_license_disabled gpl libx264
5133 die_license_disabled gpl libx265
5134 die_license_disabled gpl libxavs
5135 die_license_disabled gpl libxvid
5136 die_license_disabled gpl x11grab
5137
5138 die_license_disabled nonfree libnpp
5139 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
5140 enabled gpl && die_license_disabled_gpl nonfree openssl
5141
5142 die_license_disabled version3 gmp
5143 die_license_disabled version3 libopencore_amrnb
5144 die_license_disabled version3 libopencore_amrwb
5145 die_license_disabled version3 libsmbclient
5146 die_license_disabled version3 libvo_amrwbenc
5147
5148 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
5149
5150 disabled optimizations || check_cflags -fomit-frame-pointer
5151
5152 enable_weak_pic() {
5153     disabled pic && return
5154     enable pic
5155     add_cppflags -DPIC
5156     case "$target_os" in
5157     mingw*|cygwin*)
5158         ;;
5159     *)
5160         add_cflags -fPIC
5161         ;;
5162     esac
5163     add_asflags  -fPIC
5164 }
5165
5166 enabled pic && enable_weak_pic
5167
5168 check_cc <<EOF || die "Symbol mangling check failed."
5169 int ff_extern;
5170 EOF
5171 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5172 extern_prefix=${sym%%ff_extern*}
5173
5174 check_cc <<EOF && enable_weak inline_asm
5175 void foo(void) { __asm__ volatile ("" ::); }
5176 EOF
5177
5178 _restrict=
5179 for restrict_keyword in restrict __restrict__ __restrict; do
5180     check_cc <<EOF && _restrict=$restrict_keyword && break
5181 void foo(char * $restrict_keyword p);
5182 EOF
5183 done
5184
5185 check_cc <<EOF && enable pragma_deprecated
5186 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
5187 EOF
5188
5189 check_cc <<EOF && enable attribute_packed
5190 struct { int x; } __attribute__((packed)) x;
5191 EOF
5192
5193 check_cc <<EOF && enable attribute_may_alias
5194 union { int x; } __attribute__((may_alias)) x;
5195 EOF
5196
5197 check_cc <<EOF || die "endian test failed"
5198 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5199 EOF
5200 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5201
5202 if ! enabled ppc64 || enabled bigendian; then
5203     disable vsx
5204 fi
5205
5206 check_gas() {
5207     log "check_gas using '$as' as AS"
5208     # :vararg is used on aarch64, arm and ppc altivec
5209     check_as <<EOF || return 1
5210 .macro m n, y:vararg=0
5211 \n: .int \y
5212 .endm
5213 m x
5214 EOF
5215     # .altmacro is only used in arm asm
5216     ! enabled arm || check_as <<EOF || return 1
5217 .altmacro
5218 EOF
5219     enable gnu_as
5220     return 0
5221 }
5222
5223 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5224     nogas=:
5225     enabled_any arm aarch64 && nogas=die
5226     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5227     as_noop=-v
5228
5229     case $as_type in
5230         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5231         gcc)  gaspp_as_type=gas ;;
5232         *)    gaspp_as_type=$as_type ;;
5233     esac
5234
5235     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5236
5237     test "${as#*gas-preprocessor.pl}" != "$as" ||
5238     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5239         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5240
5241     if ! check_gas ; then
5242         as=${gas:=$as}
5243         check_gas || \
5244             $nogas "GNU assembler not found, install/update gas-preprocessor"
5245     fi
5246
5247     check_as <<EOF && enable as_func
5248 .func test
5249 .endfunc
5250 EOF
5251 fi
5252
5253 check_inline_asm inline_asm_labels '"1:\n"'
5254
5255 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5256
5257 if enabled aarch64; then
5258     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5259     # internal assembler in clang 3.3 does not support this instruction
5260     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5261     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5262
5263     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5264
5265 elif enabled alpha; then
5266
5267     check_cflags -mieee
5268
5269 elif enabled arm; then
5270
5271     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
5272
5273     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
5274 float func(float a, float b){ return a+b; }
5275 EOF
5276
5277     enabled thumb && check_cflags -mthumb || check_cflags -marm
5278
5279     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
5280         enable vfp_args
5281     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5282         enable vfp_args
5283     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5284         case "${cross_prefix:-$cc}" in
5285             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
5286             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
5287 __asm__ (".eabi_attribute 28, 1");
5288 int main(void) { return 0; }
5289 EOF
5290         esac
5291         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5292     fi
5293
5294     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5295     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5296     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5297     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5298     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5299     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5300     enabled setend  && check_insn setend  'setend be'
5301
5302     [ $target_os = linux ] || [ $target_os = android ] ||
5303         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5304             $ARCH_EXT_LIST_ARM
5305
5306     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5307
5308     check_as <<EOF && enable as_dn_directive
5309 ra .dn d0.i16
5310 .unreq ra
5311 EOF
5312
5313     # llvm's integrated assembler supports .object_arch from llvm 3.5
5314     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
5315 .object_arch armv4
5316 EOF
5317
5318     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5319
5320 elif enabled mips; then
5321
5322     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5323     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5324     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5325
5326     # Enable minimum ISA based on selected options
5327     if enabled mips64; then
5328         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5329         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5330         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5331     else
5332         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5333         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5334         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5335         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5336     fi
5337
5338     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5339     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5340     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
5341     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5342     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5343
5344 elif enabled parisc; then
5345
5346     if enabled gcc; then
5347         case $($cc -dumpversion) in
5348             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5349         esac
5350     fi
5351
5352 elif enabled ppc; then
5353
5354     enable local_aligned_8 local_aligned_16 local_aligned_32
5355
5356     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5357     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5358     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5359     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5360
5361     # AltiVec flags: The FSF version of GCC differs from the Apple version
5362     if enabled altivec; then
5363         check_cflags -maltivec -mabi=altivec &&
5364         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
5365         check_cflags -faltivec
5366
5367         # check if our compiler supports Motorola AltiVec C API
5368         check_cc <<EOF || disable altivec
5369 $inc_altivec_h
5370 int main(void) {
5371     vector signed int v1 = (vector signed int) { 0 };
5372     vector signed int v2 = (vector signed int) { 1 };
5373     v1 = vec_add(v1, v2);
5374     return 0;
5375 }
5376 EOF
5377
5378         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5379     fi
5380
5381     if enabled vsx; then
5382         check_cflags -mvsx &&
5383         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
5384     fi
5385
5386     if enabled power8; then
5387         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
5388     fi
5389
5390 elif enabled x86; then
5391
5392     check_builtin rdtsc    intrin.h   "__rdtsc()"
5393     check_builtin mm_empty mmintrin.h "_mm_empty()"
5394
5395     enable local_aligned_8 local_aligned_16 local_aligned_32
5396
5397     # check whether EBP is available on x86
5398     # As 'i' is stored on the stack, this program will crash
5399     # if the base pointer is used to access it because the
5400     # base pointer is cleared in the inline assembly code.
5401     check_exec_crash <<EOF && enable ebp_available
5402 volatile int i=0;
5403 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5404 return i;
5405 EOF
5406
5407     # check whether EBX is available on x86
5408     check_inline_asm ebx_available '""::"b"(0)' &&
5409         check_inline_asm ebx_available '"":::"%ebx"'
5410
5411     # check whether xmm clobbers are supported
5412     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5413
5414     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5415         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5416
5417     # check whether binutils is new enough to compile SSSE3/MMXEXT
5418     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5419     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5420
5421     if ! disabled_any asm mmx yasm; then
5422         if check_cmd $yasmexe --version; then
5423             enabled x86_64 && yasm_extra="-m amd64"
5424             yasm_debug="-g dwarf2"
5425         elif check_cmd nasm -v; then
5426             yasmexe=nasm
5427             yasm_debug="-g -F dwarf"
5428             if enabled x86_64; then
5429                 case "$objformat" in
5430                     elf)   objformat=elf64 ;;
5431                     win32) objformat=win64 ;;
5432                 esac
5433             fi
5434         fi
5435
5436         YASMFLAGS="-f $objformat $yasm_extra"
5437         enabled pic               && append YASMFLAGS "-DPIC"
5438         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
5439         case "$objformat" in
5440             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
5441         esac
5442
5443         check_yasm "movbe ecx, [5]" && enable yasm ||
5444             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
5445         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
5446         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
5447         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
5448         check_yasm "CPU amdnop" || disable cpunop
5449     fi
5450
5451     case "$cpu" in
5452         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5453             disable fast_clz
5454         ;;
5455     esac
5456
5457 fi
5458
5459 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
5460
5461 check_ldflags -Wl,--as-needed
5462 check_ldflags -Wl,-z,noexecstack
5463
5464 if check_func dlopen && check_func dlsym; then
5465     ldl=
5466 elif check_func dlopen -ldl && check_func dlsym -ldl; then
5467     ldl=-ldl
5468 fi
5469
5470 avisynth_demuxer_extralibs='$ldl'
5471 cuda_extralibs='$ldl'
5472 decklink_outdev_extralibs="$decklink_outdev_extralibs $ldl"
5473 decklink_indev_extralibs="$decklink_indev_extralibs $ldl"
5474 frei0r_filter_extralibs='$ldl'
5475 frei0r_src_filter_extralibs='$ldl'
5476 ladspa_filter_extralibs='$ldl'
5477 nvenc_extralibs='$ldl'
5478 coreimage_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5479 coreimagesrc_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5480
5481 if ! disabled network; then
5482     check_func getaddrinfo $network_extralibs
5483     check_func inet_aton $network_extralibs
5484
5485     check_type netdb.h "struct addrinfo"
5486     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5487     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5488     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5489     check_type poll.h "struct pollfd"
5490     check_type netinet/sctp.h "struct sctp_event_subscribe"
5491     check_struct "sys/socket.h" "struct msghdr" msg_flags
5492     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5493     check_type netinet/in.h "struct sockaddr_in6"
5494     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5495     check_type "sys/types.h sys/socket.h" socklen_t
5496
5497     # Prefer arpa/inet.h over winsock2
5498     if check_header arpa/inet.h ; then
5499         check_func closesocket
5500     elif check_header winsock2.h ; then
5501         check_func_headers winsock2.h closesocket -lws2 &&
5502             network_extralibs="-lws2" ||
5503         { check_func_headers winsock2.h closesocket -lws2_32 &&
5504             network_extralibs="-lws2_32"; } || disable winsock2_h network
5505         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5506
5507         check_type ws2tcpip.h socklen_t
5508         check_type ws2tcpip.h "struct addrinfo"
5509         check_type ws2tcpip.h "struct group_source_req"
5510         check_type ws2tcpip.h "struct ip_mreq_source"
5511         check_type ws2tcpip.h "struct ipv6_mreq"
5512         check_type winsock2.h "struct pollfd"
5513         check_struct winsock2.h "struct sockaddr" sa_len
5514         check_type ws2tcpip.h "struct sockaddr_in6"
5515         check_type ws2tcpip.h "struct sockaddr_storage"
5516     else
5517         disable network
5518     fi
5519 fi
5520
5521 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5522 check_builtin atomic_compare_exchange "" "int *ptr, *oldval; int newval; __atomic_compare_exchange_n(ptr, oldval, newval, 0, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST)"
5523 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5524 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5525 check_builtin sarestart signal.h "SA_RESTART"
5526 check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" -lpthread
5527 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5528 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5529 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5530 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5531
5532 case "$custom_allocator" in
5533     jemalloc)
5534         # jemalloc by default does not use a prefix
5535         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5536     ;;
5537     tcmalloc)
5538         require_pkg_config libtcmalloc gperftools/tcmalloc.h tc_malloc
5539         malloc_prefix=tc_
5540     ;;
5541 esac
5542
5543 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5544 check_func  ${malloc_prefix}memalign            && enable memalign
5545 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5546
5547 check_func  access
5548 check_func_headers stdlib.h arc4random
5549 check_func_headers time.h clock_gettime || { check_func_headers time.h clock_gettime -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
5550 check_func  fcntl
5551 check_func  fork
5552 check_func  gethrtime
5553 check_func  getopt
5554 check_func  getrusage
5555 check_func  gettimeofday
5556 check_func  isatty
5557 check_func  mach_absolute_time
5558 check_func  mkstemp
5559 check_func  mmap
5560 check_func  mprotect
5561 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5562 check_func_headers time.h nanosleep || { check_func_headers time.h nanosleep -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
5563 check_func  sched_getaffinity
5564 check_func  setrlimit
5565 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5566 check_func  strerror_r
5567 check_func  sysconf
5568 check_func  sysctl
5569 check_func  usleep
5570
5571 check_func_headers conio.h kbhit
5572 check_func_headers io.h setmode
5573 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5574 check_func_headers stdlib.h getenv
5575 check_func_headers sys/stat.h lstat
5576
5577 check_func_headers windows.h CoTaskMemFree -lole32
5578 check_func_headers windows.h GetProcessAffinityMask
5579 check_func_headers windows.h GetProcessTimes
5580 check_func_headers windows.h GetSystemTimeAsFileTime
5581 check_func_headers windows.h LoadLibrary
5582 check_func_headers windows.h MapViewOfFile
5583 check_func_headers windows.h PeekNamedPipe
5584 check_func_headers windows.h SetConsoleTextAttribute
5585 check_func_headers windows.h SetConsoleCtrlHandler
5586 check_func_headers windows.h Sleep
5587 check_func_headers windows.h VirtualAlloc
5588 check_struct windows.h "CONDITION_VARIABLE" Ptr
5589 check_func_headers glob.h glob
5590 enabled xlib &&
5591     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5592
5593 check_header AudioToolbox/AudioToolbox.h
5594 check_header direct.h
5595 check_header dirent.h
5596 check_header dlfcn.h
5597 check_header d3d11.h
5598 check_header dxva.h
5599 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5600 check_header io.h
5601 check_header libcrystalhd/libcrystalhd_if.h
5602 check_header mach/mach_time.h
5603 check_header malloc.h
5604 check_header net/udplite.h
5605 check_header poll.h
5606 check_header sys/mman.h
5607 check_header sys/param.h
5608 check_header sys/resource.h
5609 check_header sys/select.h
5610 check_header sys/time.h
5611 check_header sys/un.h
5612 check_header termios.h
5613 check_header unistd.h
5614 check_header valgrind/valgrind.h
5615 check_header vdpau/vdpau.h
5616 check_header vdpau/vdpau_x11.h
5617 check_header VideoDecodeAcceleration/VDADecoder.h
5618 check_header VideoToolbox/VideoToolbox.h
5619 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5620 enabled videotoolbox && check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferColorPrimaries_ITU_R_2020 -framework CoreVideo
5621 check_header windows.h
5622 check_header X11/extensions/XvMClib.h
5623 check_header asm/types.h
5624
5625 # it seems there are versions of clang in some distros that try to use the
5626 # gcc headers, which explodes for stdatomic
5627 # so we also check that atomics actually work here
5628 check_builtin stdatomic_h stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0)"
5629
5630 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
5631 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
5632 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
5633 check_lib "CoreServices/CoreServices.h" UTGetOSTypeFromString "-framework CoreServices"
5634
5635 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5636
5637 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5638 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5639 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5640 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5641 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5642
5643 check_type "va/va.h" "VAPictureParameterBufferHEVC"
5644 check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
5645 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
5646 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
5647 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5648 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5649
5650 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5651
5652 check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt
5653
5654 if ! disabled w32threads && ! enabled pthreads; then
5655     check_func_headers "windows.h process.h" _beginthreadex &&
5656         enable w32threads || disable w32threads
5657     if ! enabled w32threads && enabled winrt; then
5658         check_func_headers "windows.h" CreateThread &&
5659             enable w32threads || disable w32threads
5660     fi
5661 fi
5662
5663 # check for some common methods of building with pthread support
5664 # do this before the optional library checks as some of them require pthreads
5665 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5666     enable pthreads
5667     if check_func pthread_join -pthread && check_func pthread_create -pthread; then
5668         add_cflags -pthread
5669         add_extralibs -pthread
5670     elif check_func pthread_join -pthreads && check_func pthread_create -pthreads; then
5671         add_cflags -pthreads
5672         add_extralibs -pthreads
5673     elif check_func pthread_join -ldl -pthread && check_func pthread_create -ldl -pthread; then
5674         add_cflags -ldl -pthread
5675         add_extralibs -ldl -pthread
5676     elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
5677         add_extralibs -lpthreadGC2
5678     elif check_lib pthread.h pthread_join -lpthread && check_lib pthread.h pthread_create -lpthread; then
5679         :
5680     elif ! check_func pthread_join && ! check_func pthread_create; then
5681         disable pthreads
5682     fi
5683     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5684 fi
5685
5686
5687 if enabled pthreads; then
5688   check_func pthread_cancel
5689 fi
5690
5691 enabled pthreads &&
5692     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)"
5693
5694 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
5695 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
5696 disabled  lzma || check_lib2  lzma.h lzma_version_number -llzma || disable lzma
5697
5698 check_lib math.h sin -lm && LIBM="-lm"
5699 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
5700
5701 atan2f_args=2
5702 copysign_args=2
5703 hypot_args=2
5704 ldexpf_args=2
5705 powf_args=2
5706
5707 for func in $MATH_FUNCS; do
5708     eval check_mathfunc $func \${${func}_args:-1}
5709 done
5710
5711 for func in $COMPLEX_FUNCS; do
5712     eval check_complexfunc $func \${${func}_args:-1}
5713 done
5714
5715 # these are off by default, so fail if requested and not available
5716 enabled avfoundation_indev && { check_header_objcc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
5717 enabled avfoundation_indev && { check_lib2 CoreGraphics/CoreGraphics.h CGGetActiveDisplayList -framework CoreGraphics ||
5718                                 check_lib2 ApplicationServices/ApplicationServices.h CGGetActiveDisplayList -framework ApplicationServices; }
5719 enabled cuda              && check_header cuda.h # this is not a dependency
5720 enabled cuvid             && { enabled cuda ||
5721                                die "ERROR: CUVID requires CUDA"; }
5722 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5723 enabled coreimage_filter  && { check_header_objcc QuartzCore/CoreImage.h || disable coreimage_filter; }
5724 enabled coreimagesrc_filter && { check_header_objcc QuartzCore/CoreImage.h || disable coreimagesrc_filter; }
5725 enabled decklink          && { { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; } &&
5726                                { check_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a060100" || die "ERROR: Decklink API version must be >= 10.6.1."; } }
5727 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
5728 enabled gmp               && require2 gmp gmp.h mpz_export -lgmp
5729 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
5730 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads &&
5731                                check_lib2 "dlfcn.h" dlopen -ldl; }
5732 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
5733 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5734 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
5735 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
5736 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
5737 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5738                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
5739                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5740 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
5741 enabled libfdk_aac        && { use_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5742                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5743                                  warn "using libfdk without pkg-config"; } }
5744 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"
5745 enabled libflite          && require2 libflite "flite/flite.h" flite_init $flite_libs
5746 enabled fontconfig        && enable libfontconfig
5747 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
5748 enabled libfreetype       && require_libfreetype
5749 enabled libfribidi        && require_pkg_config fribidi fribidi.h fribidi_version_info
5750 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
5751 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5752                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
5753                                done || die "ERROR: libgsm not found"; }
5754 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
5755 enabled libkvazaar        && require_pkg_config "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
5756 enabled libmfx            && require_pkg_config libmfx "mfx/mfxvideo.h" MFXInit
5757 enabled libmodplug        && require_pkg_config libmodplug libmodplug/modplug.h ModPlug_Load
5758 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5759 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
5760 enabled libnpp            && require libnpp npp.h nppGetLibVersion -lnppi -lnppc
5761 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5762 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5763 enabled libopencv         && { check_header opencv2/core/core_c.h &&
5764                                { use_pkg_config opencv opencv2/core/core_c.h cvCreateImageHeader ||
5765                                  require opencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
5766                                require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader; }
5767 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
5768 enabled libopenjpeg       && { { check_lib2 openjpeg-2.1/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5769                                check_lib2 openjpeg-2.1/openjpeg.h opj_version -lopenjp2 ||
5770                                { check_lib2 openjpeg-2.0/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5771                                { check_lib2 openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5772                                { check_lib2 openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5773                                die "ERROR: libopenjpeg not found"; }
5774 enabled libopenmpt        && require_pkg_config "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create
5775 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
5776 enabled libpulse          && require_pkg_config libpulse pulse/pulseaudio.h pa_context_new
5777 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
5778 enabled librubberband     && require_pkg_config "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new
5779 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
5780 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
5781 enabled libsmbclient      && { use_pkg_config smbclient libsmbclient.h smbc_init ||
5782                                require smbclient libsmbclient.h smbc_init -lsmbclient; }
5783 enabled libsnappy         && require snappy snappy-c.h snappy_compress -lsnappy
5784 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr && LIBSOXR="-lsoxr"
5785 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
5786 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
5787 enabled libtesseract      && require_pkg_config tesseract tesseract/capi.h TessBaseAPICreate
5788 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
5789 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
5790                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
5791                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
5792 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
5793 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
5794 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
5795 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
5796
5797 enabled libvpx            && {
5798     enabled libvpx_vp8_decoder && {
5799         use_pkg_config "vpx >= 0.9.1" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
5800             check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
5801                 die "ERROR: libvpx decoder version must be >=0.9.1";
5802     }
5803     enabled libvpx_vp8_encoder && {
5804         use_pkg_config "vpx >= 0.9.7" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
5805             check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
5806                 die "ERROR: libvpx encoder version must be >=0.9.7";
5807     }
5808     enabled libvpx_vp9_decoder && {
5809         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
5810             check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx ||
5811                 disable libvpx_vp9_decoder;
5812     }
5813     enabled libvpx_vp9_encoder && {
5814         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
5815             check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx ||
5816                 disable libvpx_vp9_encoder;
5817     }
5818     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
5819         die "libvpx enabled but no supported decoders found"
5820     fi
5821 }
5822
5823 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
5824 enabled libwebp           && {
5825     enabled libwebp_encoder      && require_pkg_config "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
5826     enabled libwebp_anim_encoder && { use_pkg_config "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit || disable libwebp_anim_encoder; } }
5827 enabled libx264           && { use_pkg_config x264 "stdint.h x264.h" x264_encoder_encode ||
5828                                { require libx264 x264.h x264_encoder_encode -lx264 &&
5829                                  warn "using libx264 without pkg-config"; } } &&
5830                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
5831                                die "ERROR: libx264 must be installed and version must be >= 0.118."; } &&
5832                              { check_cpp_condition x264.h "X264_MPEG2" &&
5833                                enable libx262; }
5834 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
5835                              { check_cpp_condition x265.h "X265_BUILD >= 68" ||
5836                                die "ERROR: libx265 version must be >= 68."; }
5837 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
5838 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
5839 enabled libzimg           && require_pkg_config "zimg >= 2.3.0" zimg.h zimg_get_api_version
5840 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
5841 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi &&
5842                              { check_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
5843                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
5844 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
5845 enabled mmal              && { check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
5846                                 { ! enabled cross_compile && {
5847                                     add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline ;
5848                                     add_extralibs -L/opt/vc/lib/ -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ;
5849                                     check_lib interface/mmal/mmal.h mmal_port_connect ; }
5850                                 check_lib interface/mmal/mmal.h mmal_port_connect ; } ||
5851                                die "ERROR: mmal not found"; }
5852 enabled mmal && check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"
5853
5854 enabled netcdf            && require_pkg_config netcdf netcdf.h nc_inq_libvers
5855 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
5856                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
5857                                die "ERROR: openal not found"; } &&
5858                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
5859                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
5860 enabled opencl            && { check_lib2 OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
5861                                check_lib2 CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
5862                                die "ERROR: opencl not found"; } &&
5863                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
5864                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
5865                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
5866 enabled opengl            && { check_lib GL/glx.h glXGetProcAddress "-lGL" ||
5867                                check_lib2 windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
5868                                check_lib2 OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
5869                                check_lib2 ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
5870                                die "ERROR: opengl not found."
5871                              }
5872 enabled omx_rpi && enable omx
5873 enabled omx               && { check_header OMX_Core.h ||
5874                                 { ! enabled cross_compile && enabled omx_rpi && {
5875                                     add_cflags -isystem/opt/vc/include/IL ; }
5876                                 check_header OMX_Core.h ; } ||
5877                                die "ERROR: OpenMAX IL headers not found"; }
5878 enabled openssl           && { use_pkg_config openssl openssl/ssl.h OPENSSL_init_ssl ||
5879                                use_pkg_config openssl openssl/ssl.h SSL_library_init ||
5880                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
5881                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
5882                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
5883                                die "ERROR: openssl not found"; }
5884 enabled qtkit_indev      && { check_header_objcc QTKit/QTKit.h || disable qtkit_indev; }
5885
5886 # libdc1394 check
5887 if enabled libdc1394; then
5888     { require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new &&
5889         enable libdc1394_2; } ||
5890     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
5891         enable libdc1394_1; } ||
5892     die "ERROR: No version of libdc1394 found "
5893 fi
5894
5895 if enabled gcrypt; then
5896     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
5897     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
5898         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
5899         gcrypt_libs=$("${GCRYPT_CONFIG}" --libs)
5900         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_libs ||
5901             die "ERROR: gcrypt not found"
5902         add_cflags $gcrypt_cflags && add_extralibs $gcrypt_libs
5903     else
5904         require2 gcrypt gcrypt.h gcry_mpi_new -lgcrypt
5905     fi
5906 fi
5907
5908 disabled sdl && disable sdl2
5909 if ! disabled sdl2; then
5910     SDL2_CONFIG="${cross_prefix}sdl2-config"
5911     if check_pkg_config sdl2 SDL_events.h SDL_PollEvent; then
5912         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
5913         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
5914         check_func SDL_Init $sdl2_libs $sdl2_cflags && enable sdl2
5915     else
5916       if "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
5917         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
5918         sdl2_libs=$("${SDL2_CONFIG}" --libs)
5919         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
5920         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
5921         check_func SDL_Init $sdl2_libs $sdl2_cflags && enable sdl2
5922       fi
5923     fi
5924     if test $target_os = "mingw32"; then
5925         sdl2_libs="$sdl2_libs -mconsole"
5926     fi
5927 fi
5928 enabled sdl2 && enable sdl && add_cflags $sdl2_cflags && add_extralibs $sdl2_libs
5929
5930 disabled securetransport || { check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5931     check_lib2 "Security/SecureTransport.h Security/Security.h" "SSLCreateContext SecItemImport" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5932     enable securetransport; }
5933
5934 disabled schannel || { check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
5935                        check_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" && enable schannel && add_extralibs -lsecur32; }
5936
5937 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
5938 enabled makeinfo \
5939     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
5940     && enable makeinfo_html || disable makeinfo_html
5941 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
5942 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
5943 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
5944 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
5945
5946 check_header linux/fb.h
5947 check_header linux/videodev.h
5948 check_header linux/videodev2.h
5949 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5950
5951 check_header sys/videoio.h
5952 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5953
5954 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
5955 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
5956 # w32api 3.12 had it defined wrong
5957 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
5958
5959 check_type "dshow.h" IBaseFilter
5960
5961 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
5962 { check_header dev/bktr/ioctl_meteor.h &&
5963   check_header dev/bktr/ioctl_bt848.h; } ||
5964 { check_header machine/ioctl_meteor.h &&
5965   check_header machine/ioctl_bt848.h; } ||
5966 { check_header dev/video/meteor/ioctl_meteor.h &&
5967   check_header dev/video/bktr/ioctl_bt848.h; } ||
5968 check_header dev/ic/bt8xx.h
5969
5970 check_header sndio.h
5971 if check_struct sys/soundcard.h audio_buf_info bytes; then
5972     enable_safe sys/soundcard.h
5973 else
5974     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
5975     #include <sys/soundcard.h>
5976     audio_buf_info abc;
5977 EOF
5978 fi
5979 check_header soundcard.h
5980
5981 enabled_any alsa_indev alsa_outdev &&
5982     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
5983
5984 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack &&
5985     check_func jack_port_get_latency_range -ljack
5986
5987 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
5988
5989 if enabled libcdio; then
5990     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
5991     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
5992     die "ERROR: No usable libcdio/cdparanoia found"
5993 fi
5994
5995 enabled xlib &&
5996     check_lib X11/Xlib.h XOpenDisplay -lX11 || disable xlib
5997
5998 if ! disabled libxcb; then
5999     check_pkg_config "xcb >= 1.4" xcb/xcb.h xcb_connect || {
6000         enabled libxcb && die "ERROR: libxcb >= 1.4 not found";
6001     } && disable x11grab && enable libxcb
6002
6003 if enabled libxcb; then
6004     disabled libxcb_shm || {
6005         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
6006             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
6007         } && check_header sys/shm.h && enable libxcb_shm; }
6008
6009     disabled libxcb_xfixes || {
6010         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
6011             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
6012         } && enable libxcb_xfixes; }
6013
6014     disabled libxcb_shape || {
6015         check_pkg_config xcb-shape xcb/shape.h xcb_shape_get_rectangles || {
6016             enabled libxcb_shape && die "ERROR: libxcb_shape not found";
6017         } && enable libxcb_shape; }
6018
6019     add_cflags $xcb_cflags $xcb_shm_cflags $xcb_xfixes_cflags $xcb_shape_cflags
6020     add_extralibs $xcb_libs $xcb_shm_libs $xcb_xfixes_libs $xcb_shape_libs
6021 fi
6022 fi
6023
6024 if enabled x11grab; then
6025     enabled xlib || die "ERROR: Xlib not found"
6026     require Xext X11/extensions/XShm.h XShmCreateImage -lXext
6027     require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
6028 fi
6029
6030 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6031
6032 enabled dxva2api_h &&
6033     check_cc <<EOF && enable dxva2api_cobj
6034 #define _WIN32_WINNT 0x0600
6035 #define COBJMACROS
6036 #include <windows.h>
6037 #include <d3d9.h>
6038 #include <dxva2api.h>
6039 int main(void) { IDirectXVideoDecoder *o = NULL; IDirectXVideoDecoder_Release(o); return 0; }
6040 EOF
6041
6042 enabled vaapi &&
6043     check_lib va/va.h vaInitialize -lva ||
6044     disable vaapi
6045
6046 enabled vaapi &&
6047     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
6048     disable vaapi
6049
6050 if enabled vaapi ; then
6051     enabled xlib &&
6052     check_lib2 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 &&
6053     enable vaapi_x11
6054
6055     check_lib2 "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm &&
6056     enable vaapi_drm
6057 fi
6058
6059 enabled vdpau &&
6060     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
6061     disable vdpau
6062
6063 enabled vdpau && enabled xlib &&
6064     check_lib2 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
6065     enable vdpau_x11
6066
6067 if enabled x86; then
6068     case $target_os in
6069         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6070             ;;
6071         *)
6072             disable cuda cuvid nvenc
6073             ;;
6074     esac
6075 else
6076     disable cuda cuvid nvenc
6077 fi
6078
6079 enabled nvenc &&
6080     check_cc -I$source_path <<EOF || disable nvenc
6081 #include "compat/nvenc/nvEncodeAPI.h"
6082 NV_ENCODE_API_FUNCTION_LIST flist;
6083 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6084 int main(void) { return 0; }
6085 EOF
6086
6087 # Funny iconv installations are not unusual, so check it after all flags have been set
6088 disabled iconv || check_func_headers iconv.h iconv || check_lib2 iconv.h iconv -liconv || disable iconv
6089
6090 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6091
6092 # add some useful compiler flags if supported
6093 check_cflags -Wdeclaration-after-statement
6094 check_cflags -Wall
6095 check_cflags -Wdisabled-optimization
6096 check_cflags -Wpointer-arith
6097 check_cflags -Wredundant-decls
6098 check_cflags -Wwrite-strings
6099 check_cflags -Wtype-limits
6100 check_cflags -Wundef
6101 check_cflags -Wmissing-prototypes
6102 check_cflags -Wno-pointer-to-int-cast
6103 check_cflags -Wstrict-prototypes
6104 check_cflags -Wempty-body
6105 enabled extra_warnings && check_cflags -Winline
6106 enabled extra_warnings && check_cflags -Wcast-qual
6107
6108 check_disable_warning(){
6109     warning_flag=-W${1#-Wno-}
6110     test_cflags $warning_flag && add_cflags $1
6111 }
6112
6113 check_disable_warning -Wno-parentheses
6114 check_disable_warning -Wno-switch
6115 check_disable_warning -Wno-format-zero-length
6116 check_disable_warning -Wno-pointer-sign
6117 check_disable_warning -Wno-unused-const-variable
6118
6119 # add some linker flags
6120 check_ldflags -Wl,--warn-common
6121 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6122 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
6123 enabled rpath && add_ldlibflags -Wl,-rpath,$libdir
6124 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6125
6126 # add some strip flags
6127 # -wN '..@*' is more selective than -x, but not available everywhere.
6128 check_stripflags -wN \'..@*\' || check_stripflags -x
6129
6130 enabled neon_clobber_test &&
6131     check_ldflags -Wl,--wrap,avcodec_open2              \
6132                   -Wl,--wrap,avcodec_decode_audio4      \
6133                   -Wl,--wrap,avcodec_decode_video2      \
6134                   -Wl,--wrap,avcodec_decode_subtitle2   \
6135                   -Wl,--wrap,avcodec_encode_audio2      \
6136                   -Wl,--wrap,avcodec_encode_video2      \
6137                   -Wl,--wrap,avcodec_send_packet        \
6138                   -Wl,--wrap,avcodec_receive_frame      \
6139                   -Wl,--wrap,avcodec_send_frame         \
6140                   -Wl,--wrap,avcodec_receive_packet     \
6141                   -Wl,--wrap,avcodec_encode_subtitle    \
6142                   -Wl,--wrap,swr_convert                \
6143                   -Wl,--wrap,avresample_convert ||
6144     disable neon_clobber_test
6145
6146 enabled xmm_clobber_test &&
6147     check_ldflags -Wl,--wrap,avcodec_open2              \
6148                   -Wl,--wrap,avcodec_decode_audio4      \
6149                   -Wl,--wrap,avcodec_decode_video2      \
6150                   -Wl,--wrap,avcodec_decode_subtitle2   \
6151                   -Wl,--wrap,avcodec_encode_audio2      \
6152                   -Wl,--wrap,avcodec_encode_video2      \
6153                   -Wl,--wrap,avcodec_encode_subtitle    \
6154                   -Wl,--wrap,avcodec_send_packet        \
6155                   -Wl,--wrap,avcodec_receive_frame      \
6156                   -Wl,--wrap,avcodec_send_frame         \
6157                   -Wl,--wrap,avcodec_receive_packet     \
6158                   -Wl,--wrap,swr_convert                \
6159                   -Wl,--wrap,avresample_convert         \
6160                   -Wl,--wrap,sws_scale ||
6161     disable xmm_clobber_test
6162
6163 check_ld "cc" <<EOF && enable proper_dce
6164 extern const int array[512];
6165 static inline int func(void) { return array[0]; }
6166 int main(void) { return 0; }
6167 EOF
6168
6169 if enabled proper_dce; then
6170     echo "X { local: *; };" > $TMPV
6171     if test_ldflags -Wl,${version_script},$TMPV; then
6172         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6173         check_cc <<EOF && enable symver_asm_label
6174 void ff_foo(void) __asm__ ("av_foo@VERSION");
6175 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6176 EOF
6177         check_cc <<EOF && enable symver_gnu_asm
6178 __asm__(".symver ff_foo,av_foo@VERSION");
6179 void ff_foo(void) {}
6180 EOF
6181     fi
6182 fi
6183
6184 if [ -z "$optflags" ]; then
6185     if enabled small; then
6186         optflags=$cflags_size
6187     elif enabled optimizations; then
6188         optflags=$cflags_speed
6189     else
6190         optflags=$cflags_noopt
6191     fi
6192 fi
6193
6194 check_optflags(){
6195     check_cflags "$@"
6196     enabled lto && check_ldflags "$@"
6197 }
6198
6199
6200 if enabled lto; then
6201     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6202     check_cflags  -flto
6203     check_ldflags -flto $cpuflags
6204     disable inline_asm_direct_symbol_refs
6205 fi
6206
6207 check_optflags $optflags
6208 check_optflags -fno-math-errno
6209 check_optflags -fno-signed-zeros
6210
6211 enabled ftrapv && check_cflags -ftrapv
6212
6213 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6214 int x;
6215 EOF
6216
6217
6218 if enabled icc; then
6219     # Just warnings, no remarks
6220     check_cflags -w1
6221     # -wd: Disable following warnings
6222     # 144, 167, 556: -Wno-pointer-sign
6223     # 188: enumerated type mixed with another type
6224     # 1292: attribute "foo" ignored
6225     # 1419: external declaration in primary source file
6226     # 10006: ignoring unknown option -fno-signed-zeros
6227     # 10148: ignoring unknown option -Wno-parentheses
6228     # 10156: ignoring option '-W'; no argument required
6229     # 13200: No EMMS instruction before call to function
6230     # 13203: No EMMS instruction before return from function
6231     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6232     # 11030: Warning unknown option --as-needed
6233     # 10156: ignoring option '-export'; no argument required
6234     check_ldflags -wd10156,11030
6235     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6236     enable ebp_available
6237     # The test above does not test linking
6238     enabled lto && disable symver_asm_label
6239     if enabled x86_32; then
6240         icc_version=$($cc -dumpversion)
6241         test ${icc_version%%.*} -ge 11 &&
6242             check_cflags -falign-stack=maintain-16-byte ||
6243             disable aligned_stack
6244     fi
6245 elif enabled ccc; then
6246     # disable some annoying warnings
6247     add_cflags -msg_disable bitnotint
6248     add_cflags -msg_disable mixfuncvoid
6249     add_cflags -msg_disable nonstandcast
6250     add_cflags -msg_disable unsupieee
6251 elif enabled gcc; then
6252     check_optflags -fno-tree-vectorize
6253     check_cflags -Werror=format-security
6254     check_cflags -Werror=implicit-function-declaration
6255     check_cflags -Werror=missing-prototypes
6256     check_cflags -Werror=return-type
6257     check_cflags -Werror=vla
6258     check_cflags -Wformat
6259     check_cflags -fdiagnostics-color=auto
6260     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6261 elif enabled llvm_gcc; then
6262     check_cflags -mllvm -stack-alignment=16
6263 elif enabled clang; then
6264     check_cflags -mllvm -stack-alignment=16
6265     check_cflags -mstack-alignment=16
6266     check_cflags -Qunused-arguments
6267     check_cflags -Werror=implicit-function-declaration
6268     check_cflags -Werror=missing-prototypes
6269     check_cflags -Werror=return-type
6270 elif enabled cparser; then
6271     add_cflags -Wno-missing-variable-declarations
6272     add_cflags -Wno-empty-statement
6273 elif enabled armcc; then
6274     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6275     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6276     # 2523: use of inline assembly is deprecated
6277     add_cflags -W${armcc_opt},--diag_suppress=2523
6278     add_cflags -W${armcc_opt},--diag_suppress=1207
6279     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6280     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6281     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6282     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6283 elif enabled tms470; then
6284     add_cflags -pds=824 -pds=837
6285     disable inline_asm
6286 elif enabled pathscale; then
6287     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6288 elif enabled_any msvc icl; then
6289     enabled x86_32 && disable aligned_stack
6290     enabled_all x86_32 debug && add_cflags -Oy-
6291     enabled debug && add_ldflags -debug
6292     enable pragma_deprecated
6293     if enabled icl; then
6294         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6295         # (correctly) on icl 13.x.
6296         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6297             add_cflags -Qansi-alias
6298         # Some inline asm is not compilable in debug
6299         if enabled debug; then
6300             disable ebp_available
6301             disable ebx_available
6302         fi
6303     fi
6304     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6305     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
6306     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6307     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6308     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6309     # MSVC 2013 and newer can handle it fine.
6310     # If this declspec fails, force including stdlib.h before the restrict redefinition
6311     # happens in config.h.
6312     if [ $_restrict != restrict ]; then
6313         check_cc <<EOF || add_cflags -FIstdlib.h
6314 __declspec($_restrict) void* foo(int);
6315 EOF
6316     fi
6317     check_func strtoll || add_cflags -Dstrtoll=_strtoi64
6318     check_func strtoull || add_cflags -Dstrtoull=_strtoui64
6319     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6320     # this flag should be re-checked on newer compiler releases and put under a
6321     # version check once its fixed
6322     check_cflags -d2SSAOptimizer-
6323 fi
6324
6325 for pfx in "" host_; do
6326     varname=${pfx%_}cc_type
6327     eval "type=\$$varname"
6328     if [ $type = "msvc" ]; then
6329         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6330 static inline int foo(int a) { return a; }
6331 EOF
6332     fi
6333 done
6334
6335 case $as_type in
6336     clang)
6337         add_asflags -Qunused-arguments
6338     ;;
6339 esac
6340
6341 case $ld_type in
6342     clang)
6343         check_ldflags -Qunused-arguments
6344     ;;
6345 esac
6346
6347 case $target_os in
6348     osf1)
6349         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
6350     ;;
6351     plan9)
6352         add_cppflags -Dmain=plan9_main
6353     ;;
6354 esac
6355
6356 enable frame_thread_encoder
6357
6358 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6359
6360 check_deps $CONFIG_LIST       \
6361            $CONFIG_EXTRA      \
6362            $HAVE_LIST         \
6363            $ALL_COMPONENTS    \
6364
6365 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"
6366
6367
6368 if test $target_os = "haiku"; then
6369     disable memalign
6370     disable posix_memalign
6371 fi
6372
6373 enabled_all dxva2 dxva2api_cobj CoTaskMemFree &&
6374     prepend ffmpeg_libs $($ldflags_filter "-lole32") &&
6375     enable dxva2_lib
6376
6377 ! enabled_any memalign posix_memalign aligned_malloc &&
6378     enabled simd_align_16 && enable memalign_hack
6379
6380 # add_dep lib dep
6381 # -> enable ${lib}_deps_${dep}
6382 # -> add $dep to ${lib}_deps only once
6383 add_dep() {
6384     lib=$1
6385     dep=$2
6386     enabled "${lib}_deps_${dep}" && return 0
6387     enable  "${lib}_deps_${dep}"
6388     prepend "${lib}_deps" $dep
6389 }
6390
6391 # merge deps lib components
6392 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
6393 merge_deps() {
6394     lib=$1
6395     shift
6396     for comp in $*; do
6397         enabled $comp || continue
6398         eval "dep=\"\$${comp}_deps\""
6399         for d in $dep; do
6400             add_dep $lib $d
6401         done
6402     done
6403 }
6404
6405 merge_deps libavfilter $FILTER_LIST
6406
6407 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6408
6409 for thread in $THREADS_LIST; do
6410     if enabled $thread; then
6411         test -n "$thread_type" &&
6412             die "ERROR: Only one thread type must be selected." ||
6413             thread_type="$thread"
6414     fi
6415 done
6416
6417 if disabled stdatomic_h; then
6418     if enabled atomics_gcc; then
6419         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6420     elif enabled atomics_win32; then
6421         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6422     elif enabled atomics_suncc; then
6423         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6424     elif enabled pthreads; then
6425         add_compat atomics/pthread/stdatomic.o
6426         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6427     else
6428         enabled threads && die "Threading is enabled, but no atomics are available"
6429         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6430     fi
6431 fi
6432
6433 # Check if requested libraries were found.
6434 for lib in $AUTODETECT_LIBS; do
6435     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6436 done
6437
6438 enabled zlib && add_cppflags -DZLIB_CONST
6439
6440 # conditional library dependencies, in linking order
6441 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6442 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6443 enabled aresample_filter    && prepend avfilter_deps "swresample"
6444 enabled asyncts_filter      && prepend avfilter_deps "avresample"
6445 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6446 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6447 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6448 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6449 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6450 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6451 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6452 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6453 enabled pan_filter          && prepend avfilter_deps "swresample"
6454 enabled pp_filter           && prepend avfilter_deps "postproc"
6455 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6456 enabled resample_filter && prepend avfilter_deps "avresample"
6457 enabled sab_filter          && prepend avfilter_deps "swscale"
6458 enabled scale_filter    && prepend avfilter_deps "swscale"
6459 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6460 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6461 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6462 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6463 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6464 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6465 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6466 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6467 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6468
6469 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6470
6471 enabled opus_decoder    && prepend avcodec_deps "swresample"
6472
6473 expand_deps(){
6474     lib_deps=${1}_deps
6475     eval "deps=\$$lib_deps"
6476     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6477     unique $lib_deps
6478 }
6479
6480 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6481 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6482
6483 map 'expand_deps $v' $LIBRARY_LIST
6484
6485 echo "install prefix            $prefix"
6486 echo "source path               $source_path"
6487 echo "C compiler                $cc"
6488 echo "C library                 $libc_type"
6489 if test "$host_cc" != "$cc"; then
6490     echo "host C compiler           $host_cc"
6491     echo "host C library            $host_libc_type"
6492 fi
6493 echo "ARCH                      $arch ($cpu)"
6494 if test "$build_suffix" != ""; then
6495     echo "build suffix              $build_suffix"
6496 fi
6497 if test "$progs_suffix" != ""; then
6498     echo "progs suffix              $progs_suffix"
6499 fi
6500 if test "$extra_version" != ""; then
6501     echo "version string suffix     $extra_version"
6502 fi
6503 echo "big-endian                ${bigendian-no}"
6504 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6505 if enabled x86; then
6506     echo "${yasmexe}                      ${yasm-no}"
6507     echo "MMX enabled               ${mmx-no}"
6508     echo "MMXEXT enabled            ${mmxext-no}"
6509     echo "3DNow! enabled            ${amd3dnow-no}"
6510     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6511     echo "SSE enabled               ${sse-no}"
6512     echo "SSSE3 enabled             ${ssse3-no}"
6513     echo "AESNI enabled             ${aesni-no}"
6514     echo "AVX enabled               ${avx-no}"
6515     echo "XOP enabled               ${xop-no}"
6516     echo "FMA3 enabled              ${fma3-no}"
6517     echo "FMA4 enabled              ${fma4-no}"
6518     echo "i686 features enabled     ${i686-no}"
6519     echo "CMOV is fast              ${fast_cmov-no}"
6520     echo "EBX available             ${ebx_available-no}"
6521     echo "EBP available             ${ebp_available-no}"
6522 fi
6523 if enabled aarch64; then
6524     echo "NEON enabled              ${neon-no}"
6525     echo "VFP enabled               ${vfp-no}"
6526 fi
6527 if enabled arm; then
6528     echo "ARMv5TE enabled           ${armv5te-no}"
6529     echo "ARMv6 enabled             ${armv6-no}"
6530     echo "ARMv6T2 enabled           ${armv6t2-no}"
6531     echo "VFP enabled               ${vfp-no}"
6532     echo "NEON enabled              ${neon-no}"
6533     echo "THUMB enabled             ${thumb-no}"
6534 fi
6535 if enabled mips; then
6536     echo "MIPS FPU enabled          ${mipsfpu-no}"
6537     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6538     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6539     echo "MIPS MSA enabled          ${msa-no}"
6540     echo "LOONGSON MMI enabled      ${mmi-no}"
6541 fi
6542 if enabled ppc; then
6543     echo "AltiVec enabled           ${altivec-no}"
6544     echo "VSX enabled               ${vsx-no}"
6545     echo "POWER8 enabled            ${power8-no}"
6546     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6547     echo "dcbzl available           ${dcbzl-no}"
6548 fi
6549 echo "debug symbols             ${debug-no}"
6550 echo "strip symbols             ${stripping-no}"
6551 echo "optimize for size         ${small-no}"
6552 echo "optimizations             ${optimizations-no}"
6553 echo "static                    ${static-no}"
6554 echo "shared                    ${shared-no}"
6555 echo "postprocessing support    ${postproc-no}"
6556 echo "new filter support        ${avfilter-no}"
6557 echo "network support           ${network-no}"
6558 echo "threading support         ${thread_type-no}"
6559 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6560 echo "SDL2 support              ${sdl2-no}"
6561 echo "opencl enabled            ${opencl-no}"
6562 echo "JNI support               ${jni-no}"
6563 echo "texi2html enabled         ${texi2html-no}"
6564 echo "perl enabled              ${perl-no}"
6565 echo "pod2man enabled           ${pod2man-no}"
6566 echo "makeinfo enabled          ${makeinfo-no}"
6567 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6568 test -n "$random_seed" &&
6569     echo "random seed               ${random_seed}"
6570 echo
6571
6572 echo "Enabled programs:"
6573 print_enabled '' $PROGRAM_LIST | print_in_columns
6574 echo
6575
6576 echo "External libraries:"
6577 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_in_columns
6578 echo
6579
6580 echo "External libraries providing hardware acceleration:"
6581 print_enabled '' $HWACCEL_LIBRARY_LIST | print_in_columns
6582 echo
6583
6584 echo "Libraries:"
6585 print_enabled '' $LIBRARY_LIST | print_in_columns
6586 echo
6587
6588 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6589     echo "Enabled ${type}s:"
6590     eval list=\$$(toupper $type)_LIST
6591     print_enabled '_*' $list | print_in_columns
6592     echo
6593 done
6594
6595 license="LGPL version 2.1 or later"
6596 if enabled nonfree; then
6597     license="nonfree and unredistributable"
6598 elif enabled gplv3; then
6599     license="GPL version 3 or later"
6600 elif enabled lgplv3; then
6601     license="LGPL version 3 or later"
6602 elif enabled gpl; then
6603     license="GPL version 2 or later"
6604 fi
6605
6606 echo "License: $license"
6607
6608 echo "Creating config.mak, config.h, and doc/config.texi..."
6609
6610 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6611
6612 enabled stripping || strip="echo skipping strip"
6613
6614 config_files="$TMPH config.mak doc/config.texi"
6615
6616 cat > config.mak <<EOF
6617 # Automatically generated by configure - do not modify!
6618 ifndef FFMPEG_CONFIG_MAK
6619 FFMPEG_CONFIG_MAK=1
6620 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6621 prefix=$prefix
6622 LIBDIR=\$(DESTDIR)$libdir
6623 SHLIBDIR=\$(DESTDIR)$shlibdir
6624 INCDIR=\$(DESTDIR)$incdir
6625 BINDIR=\$(DESTDIR)$bindir
6626 DATADIR=\$(DESTDIR)$datadir
6627 DOCDIR=\$(DESTDIR)$docdir
6628 MANDIR=\$(DESTDIR)$mandir
6629 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6630 INSTALL_NAME_DIR=$install_name_dir
6631 SRC_PATH=$source_path
6632 SRC_LINK=$source_link
6633 ifndef MAIN_MAKEFILE
6634 SRC_PATH:=\$(SRC_PATH:.%=..%)
6635 endif
6636 CC_IDENT=$cc_ident
6637 ARCH=$arch
6638 INTRINSICS=$intrinsics
6639 CC=$cc
6640 CXX=$cxx
6641 AS=$as
6642 OBJCC=$objcc
6643 LD=$ld
6644 DEPCC=$dep_cc
6645 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6646 DEPAS=$as
6647 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6648 YASM=$yasmexe
6649 DEPYASM=$yasmexe
6650 AR=$ar
6651 ARFLAGS=$arflags
6652 AR_O=$ar_o
6653 RANLIB=$ranlib
6654 STRIP=$strip
6655 CP=cp -p
6656 LN_S=$ln_s
6657 CPPFLAGS=$CPPFLAGS
6658 CFLAGS=$CFLAGS
6659 CXXFLAGS=$CXXFLAGS
6660 OBJCFLAGS=$OBJCFLAGS
6661 ASFLAGS=$ASFLAGS
6662 AS_C=$AS_C
6663 AS_O=$AS_O
6664 OBJCC_C=$OBJCC_C
6665 OBJCC_E=$OBJCC_E
6666 OBJCC_O=$OBJCC_O
6667 CC_C=$CC_C
6668 CC_E=$CC_E
6669 CC_O=$CC_O
6670 CXX_C=$CXX_C
6671 CXX_O=$CXX_O
6672 LD_O=$LD_O
6673 LD_LIB=$LD_LIB
6674 LD_PATH=$LD_PATH
6675 DLLTOOL=$dlltool
6676 WINDRES=$windres
6677 DEPWINDRES=$dep_cc
6678 DOXYGEN=$doxygen
6679 LDFLAGS=$LDFLAGS
6680 LDEXEFLAGS=$LDEXEFLAGS
6681 LDLIBFLAGS=$LDLIBFLAGS
6682 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
6683 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
6684 YASMFLAGS=$YASMFLAGS
6685 BUILDSUF=$build_suffix
6686 PROGSSUF=$progs_suffix
6687 FULLNAME=$FULLNAME
6688 LIBPREF=$LIBPREF
6689 LIBSUF=$LIBSUF
6690 LIBNAME=$LIBNAME
6691 SLIBPREF=$SLIBPREF
6692 SLIBSUF=$SLIBSUF
6693 EXESUF=$EXESUF
6694 EXTRA_VERSION=$extra_version
6695 CCDEP=$CCDEP
6696 CXXDEP=$CXXDEP
6697 CCDEP_FLAGS=$CCDEP_FLAGS
6698 ASDEP=$ASDEP
6699 ASDEP_FLAGS=$ASDEP_FLAGS
6700 CC_DEPFLAGS=$CC_DEPFLAGS
6701 AS_DEPFLAGS=$AS_DEPFLAGS
6702 HOSTCC=$host_cc
6703 HOSTLD=$host_ld
6704 HOSTCFLAGS=$host_cflags
6705 HOSTCPPFLAGS=$host_cppflags
6706 HOSTEXESUF=$HOSTEXESUF
6707 HOSTLDFLAGS=$host_ldflags
6708 HOSTLIBS=$host_libs
6709 DEPHOSTCC=$host_cc
6710 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
6711 HOSTCCDEP=$HOSTCCDEP
6712 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
6713 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
6714 HOSTCC_C=$HOSTCC_C
6715 HOSTCC_O=$HOSTCC_O
6716 HOSTLD_O=$HOSTLD_O
6717 TARGET_EXEC=$target_exec $target_exec_args
6718 TARGET_PATH=$target_path
6719 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
6720 CFLAGS-ffplay=${sdl2_cflags}
6721 ZLIB=$($ldflags_filter -lz)
6722 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
6723 EXTRALIBS=$extralibs
6724 COMPAT_OBJS=$compat_objs
6725 EXEOBJS=$exeobjs
6726 INSTALL=$install
6727 LIBTARGET=${LIBTARGET}
6728 SLIBNAME=${SLIBNAME}
6729 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
6730 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
6731 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
6732 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
6733 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
6734 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
6735 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
6736 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
6737 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
6738 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
6739 NOREDZONE_FLAGS=$noredzone_flags
6740 EOF
6741
6742 get_version(){
6743     lcname=lib${1}
6744     name=$(toupper $lcname)
6745     file=$source_path/$lcname/version.h
6746     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
6747     enabled raise_major && eval ${name}_VERSION_MAJOR=$((${name}_VERSION_MAJOR+100))
6748     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
6749     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
6750     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
6751     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
6752 }
6753
6754 map 'get_version $v' $LIBRARY_LIST
6755
6756 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> config.mak' $LIBRARY_LIST
6757
6758 print_program_libs(){
6759     eval "program_libs=\$${1}_libs"
6760     eval echo "LIBS-${1}=${program_libs}" >> config.mak
6761 }
6762
6763 map 'print_program_libs $v' $PROGRAM_LIST
6764
6765 cat > $TMPH <<EOF
6766 /* Automatically generated by configure - do not modify! */
6767 #ifndef FFMPEG_CONFIG_H
6768 #define FFMPEG_CONFIG_H
6769 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
6770 #define FFMPEG_LICENSE "$(c_escape $license)"
6771 #define CONFIG_THIS_YEAR 2017
6772 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
6773 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
6774 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
6775 #define av_restrict $_restrict
6776 #define EXTERN_PREFIX "${extern_prefix}"
6777 #define EXTERN_ASM ${extern_prefix}
6778 #define BUILDSUF "$build_suffix"
6779 #define SLIBSUF "$SLIBSUF"
6780 #define HAVE_MMX2 HAVE_MMXEXT
6781 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
6782 EOF
6783
6784 test -n "$assert_level" &&
6785     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
6786
6787 test -n "$malloc_prefix" &&
6788     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
6789
6790 if enabled yasm; then
6791     append config_files $TMPASM
6792     printf '' >$TMPASM
6793 fi
6794
6795 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
6796
6797
6798 mkdir -p doc
6799 mkdir -p tests
6800 mkdir -p tests/api
6801 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
6802
6803 print_config ARCH_   "$config_files" $ARCH_LIST
6804 print_config HAVE_   "$config_files" $HAVE_LIST
6805 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
6806                                      $CONFIG_EXTRA      \
6807                                      $ALL_COMPONENTS    \
6808
6809 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
6810 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
6811
6812 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
6813 cp_if_changed $TMPH config.h
6814 touch .config
6815
6816 enabled yasm && cp_if_changed $TMPASM config.asm
6817
6818 cat > $TMPH <<EOF
6819 /* Generated by ffconf */
6820 #ifndef AVUTIL_AVCONFIG_H
6821 #define AVUTIL_AVCONFIG_H
6822 EOF
6823
6824 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
6825
6826 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
6827
6828 cp_if_changed $TMPH libavutil/avconfig.h
6829
6830 if test -n "$WARNINGS"; then
6831     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
6832     enabled fatal_warnings && exit 1
6833 fi
6834
6835 # generate the lists of enabled components
6836 print_enabled_components(){
6837     file=$1
6838     struct_name=$2
6839     name=$3
6840     shift 3
6841     echo "static const $struct_name *$name[] = {" > $TMPH
6842     for c in $*; do
6843         enabled $c && printf "    &ff_%s,\n" $c >> $TMPH
6844     done
6845     echo "    NULL };" >> $TMPH
6846     cp_if_changed $TMPH $file
6847 }
6848
6849 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
6850 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
6851
6852 # build pkg-config files
6853
6854 lib_version(){
6855     eval printf "\"lib${1}${build_suffix} >= \$LIB$(toupper ${1})_VERSION, \""
6856 }
6857
6858 pkgconfig_generate(){
6859     name=$1
6860     shortname=${name#lib}${build_suffix}
6861     comment=$2
6862     version=$3
6863     libs=$4
6864     requires=$(map 'lib_version $v' $(eval echo \$${name#lib}_deps))
6865     requires=${requires%, }
6866     enabled ${name#lib} || return 0
6867     mkdir -p $name
6868     cat <<EOF > $name/$name${build_suffix}.pc
6869 prefix=$prefix
6870 exec_prefix=\${prefix}
6871 libdir=$libdir
6872 includedir=$incdir
6873
6874 Name: $name
6875 Description: $comment
6876 Version: $version
6877 Requires: $(enabled shared || echo $requires)
6878 Requires.private: $(enabled shared && echo $requires)
6879 Conflicts:
6880 Libs: -L\${libdir} $(enabled rpath && echo "-Wl,-rpath,\${libdir}") -l${shortname} $(enabled shared || echo $libs)
6881 Libs.private: $(enabled shared && echo $libs)
6882 Cflags: -I\${includedir}
6883 EOF
6884
6885 mkdir -p doc/examples/pc-uninstalled
6886 includedir=${source_path}
6887 [ "$includedir" = . ] && includedir="\${pcfiledir}/../../.."
6888     cat <<EOF > doc/examples/pc-uninstalled/${name}-uninstalled.pc
6889 prefix=
6890 exec_prefix=
6891 libdir=\${pcfiledir}/../../../$name
6892 includedir=${includedir}
6893
6894 Name: $name
6895 Description: $comment
6896 Version: $version
6897 Requires: $requires
6898 Conflicts:
6899 Libs: -L\${libdir} -Wl,-rpath,\${libdir} -l${shortname} $(enabled shared || echo $libs)
6900 Cflags: -I\${includedir}
6901 EOF
6902 }
6903
6904 pkgconfig_generate libavutil     "FFmpeg utility library"               "$LIBAVUTIL_VERSION"     "$LIBRT $LIBM"
6905 pkgconfig_generate libavcodec    "FFmpeg codec library"                 "$LIBAVCODEC_VERSION"    "$extralibs"
6906 pkgconfig_generate libavformat   "FFmpeg container format library"      "$LIBAVFORMAT_VERSION"   "$extralibs"
6907 pkgconfig_generate libavdevice   "FFmpeg device handling library"       "$LIBAVDEVICE_VERSION"   "$extralibs"
6908 pkgconfig_generate libavfilter   "FFmpeg audio/video filtering library" "$LIBAVFILTER_VERSION"   "$extralibs"
6909 pkgconfig_generate libpostproc   "FFmpeg postprocessing library"        "$LIBPOSTPROC_VERSION"   ""
6910 pkgconfig_generate libavresample "Libav audio resampling library"       "$LIBAVRESAMPLE_VERSION" "$LIBM"
6911 pkgconfig_generate libswscale    "FFmpeg image rescaling library"       "$LIBSWSCALE_VERSION"    "$LIBM"
6912 pkgconfig_generate libswresample "FFmpeg audio resampling library"      "$LIBSWRESAMPLE_VERSION" "$LIBM $LIBSOXR"