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

   1 #!/bin/sh
   2 #
   3 # FFmpeg configure script
   4 #
   5 # Copyright (c) 2000-2002 Fabrice Bellard
   6 # Copyright (c) 2005-2008 Diego Biurrun
   7 # Copyright (c) 2005-2008 Mans Rullgard
   8 #
   9
  10 # Prevent locale nonsense from breaking basic text processing.
  11 LC_ALL=C
  12 export LC_ALL
  13
  14 # make sure we are running under a compatible shell
  15 # try to make this part work with most shells
  16
  17 try_exec(){
  18     echo "Trying shell $1"
  19     type "$1" > /dev/null 2>&1 && exec "$@"
  20 }
  21
  22 unset foo
  23 (: ${foo%%bar}) 2> /dev/null
  24 E1="$?"
  25
  26 (: ${foo?}) 2> /dev/null
  27 E2="$?"
  28
  29 if test "$E1" != 0 || test "$E2" = 0; then
  30     echo "Broken shell detected.  Trying alternatives."
  31     export FF_CONF_EXEC
  32     if test "0$FF_CONF_EXEC" -lt 1; then
  33         FF_CONF_EXEC=1
  34         try_exec bash "$0" "$@"
  35     fi
  36     if test "0$FF_CONF_EXEC" -lt 2; then
  37         FF_CONF_EXEC=2
  38         try_exec ksh "$0" "$@"
  39     fi
  40     if test "0$FF_CONF_EXEC" -lt 3; then
  41         FF_CONF_EXEC=3
  42         try_exec /usr/xpg4/bin/sh "$0" "$@"
  43     fi
  44     echo "No compatible shell script interpreter found."
  45     echo "This configure script requires a POSIX-compatible shell"
  46     echo "such as bash or ksh."
  47     echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
  48     echo "Instead, install a working POSIX-compatible shell."
  49     echo "Disabling this configure test will create a broken FFmpeg."
  50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
  51         echo "This bash version ($BASH_VERSION) is broken on your platform."
  52         echo "Upgrade to a later version if available."
  53     fi
  54     exit 1
  55 fi
  56
  57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
  58
  59 show_help(){
  60     cat <<EOF
  61 Usage: configure [options]
  62 Options: [defaults in brackets after descriptions]
  63
  64 Help options:
  65   --help                   print this message
  66   --quiet                  Suppress showing informative output
  67   --list-decoders          show all available decoders
  68   --list-encoders          show all available encoders
  69   --list-hwaccels          show all available hardware accelerators
  70   --list-demuxers          show all available demuxers
  71   --list-muxers            show all available muxers
  72   --list-parsers           show all available parsers
  73   --list-protocols         show all available protocols
  74   --list-bsfs              show all available bitstream filters
  75   --list-indevs            show all available input devices
  76   --list-outdevs           show all available output devices
  77   --list-filters           show all available filters
  78
  79 Standard options:
  80   --logfile=FILE           log tests and output to FILE [config.log]
  81   --disable-logging        do not log configure debug information
  82   --fatal-warnings         fail if any configure warning is generated
  83   --prefix=PREFIX          install in PREFIX [$prefix_default]
  84   --bindir=DIR             install binaries in DIR [PREFIX/bin]
  85   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
  86   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
  87   --libdir=DIR             install libs in DIR [PREFIX/lib]
  88   --shlibdir=DIR           install shared libs in DIR [LIBDIR]
  89   --incdir=DIR             install includes in DIR [PREFIX/include]
  90   --mandir=DIR             install man page in DIR [PREFIX/share/man]
  91   --pkgconfigdir=DIR       install pkg-config files in DIR [LIBDIR/pkgconfig]
  92   --enable-rpath           use rpath to allow installing libraries in paths
  93                            not part of the dynamic linker search path
  94                            use rpath when linking programs (USE WITH CARE)
  95   --install-name-dir=DIR   Darwin directory name for installed targets
  96
  97 Licensing options:
  98   --enable-gpl             allow use of GPL code, the resulting libs
  99                            and binaries will be under GPL [no]
 100   --enable-version3        upgrade (L)GPL to version 3 [no]
 101   --enable-nonfree         allow use of nonfree code, the resulting libs
 102                            and binaries will be unredistributable [no]
 103
 104 Configuration options:
 105   --disable-static         do not build static libraries [no]
 106   --enable-shared          build shared libraries [no]
 107   --enable-small           optimize for size instead of speed
 108   --disable-runtime-cpudetect disable detecting CPU capabilities at runtime (smaller binary)
 109   --enable-gray            enable full grayscale support (slower color)
 110   --disable-swscale-alpha  disable alpha channel support in swscale
 111   --disable-all            disable building components, libraries and programs
 112   --enable-raise-major     increase major version numbers in sonames [no]
 113
 114 Program options:
 115   --disable-programs       do not build command line programs
 116   --disable-ffmpeg         disable ffmpeg build
 117   --disable-ffplay         disable ffplay build
 118   --disable-ffprobe        disable ffprobe build
 119   --disable-ffserver       disable ffserver build
 120
 121 Documentation options:
 122   --disable-doc            do not build documentation
 123   --disable-htmlpages      do not build HTML documentation pages
 124   --disable-manpages       do not build man documentation pages
 125   --disable-podpages       do not build POD documentation pages
 126   --disable-txtpages       do not build text documentation pages
 127
 128 Component options:
 129   --disable-avdevice       disable libavdevice build
 130   --disable-avcodec        disable libavcodec build
 131   --disable-avformat       disable libavformat build
 132   --disable-swresample     disable libswresample build
 133   --disable-swscale        disable libswscale build
 134   --disable-postproc       disable libpostproc build
 135   --disable-avfilter       disable libavfilter build
 136   --enable-avresample      enable libavresample build [no]
 137   --disable-pthreads       disable pthreads [autodetect]
 138   --disable-w32threads     disable Win32 threads [autodetect]
 139   --disable-os2threads     disable OS/2 threads [autodetect]
 140   --disable-network        disable network support [no]
 141   --disable-dct            disable DCT code
 142   --disable-dwt            disable DWT code
 143   --disable-error-resilience disable error resilience code
 144   --disable-lsp            disable LSP code
 145   --disable-lzo            disable LZO decoder code
 146   --disable-mdct           disable MDCT code
 147   --disable-rdft           disable RDFT code
 148   --disable-fft            disable FFT code
 149   --disable-faan           disable floating point AAN (I)DCT code
 150   --disable-pixelutils     disable pixel utils in libavutil
 151
 152 Individual component options:
 153   --disable-everything     disable all components listed below
 154   --disable-encoder=NAME   disable encoder NAME
 155   --enable-encoder=NAME    enable encoder NAME
 156   --disable-encoders       disable all encoders
 157   --disable-decoder=NAME   disable decoder NAME
 158   --enable-decoder=NAME    enable decoder NAME
 159   --disable-decoders       disable all decoders
 160   --disable-hwaccel=NAME   disable hwaccel NAME
 161   --enable-hwaccel=NAME    enable hwaccel NAME
 162   --disable-hwaccels       disable all hwaccels
 163   --disable-muxer=NAME     disable muxer NAME
 164   --enable-muxer=NAME      enable muxer NAME
 165   --disable-muxers         disable all muxers
 166   --disable-demuxer=NAME   disable demuxer NAME
 167   --enable-demuxer=NAME    enable demuxer NAME
 168   --disable-demuxers       disable all demuxers
 169   --enable-parser=NAME     enable parser NAME
 170   --disable-parser=NAME    disable parser NAME
 171   --disable-parsers        disable all parsers
 172   --enable-bsf=NAME        enable bitstream filter NAME
 173   --disable-bsf=NAME       disable bitstream filter NAME
 174   --disable-bsfs           disable all bitstream filters
 175   --enable-protocol=NAME   enable protocol NAME
 176   --disable-protocol=NAME  disable protocol NAME
 177   --disable-protocols      disable all protocols
 178   --enable-indev=NAME      enable input device NAME
 179   --disable-indev=NAME     disable input device NAME
 180   --disable-indevs         disable input devices
 181   --enable-outdev=NAME     enable output device NAME
 182   --disable-outdev=NAME    disable output device NAME
 183   --disable-outdevs        disable output devices
 184   --disable-devices        disable all devices
 185   --enable-filter=NAME     enable filter NAME
 186   --disable-filter=NAME    disable filter NAME
 187   --disable-filters        disable all filters
 188
 189 External library support:
 190
 191   Using any of the following switches will allow FFmpeg to link to the
 192   corresponding external library. All the components depending on that library
 193   will become enabled, if all their other dependencies are met and they are not
 194   explicitly disabled. E.g. --enable-libwavpack will enable linking to
 195   libwavpack and allow the libwavpack encoder to be built, unless it is
 196   specifically disabled with --disable-encoder=libwavpack.
 197
 198   Note that only the system libraries are auto-detected. All the other external
 199   libraries must be explicitly enabled.
 200
 201   Also note that the following help text describes the purpose of the libraries
 202   themselves, not all their features will necessarily be usable by FFmpeg.
 203
 204   --enable-avisynth        enable reading of AviSynth script files [no]
 205   --disable-bzlib          disable bzlib [autodetect]
 206   --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
 207   --enable-frei0r          enable frei0r video filtering [no]
 208   --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
 209                            if openssl, librtmp or gmp is not used [no]
 210   --enable-gmp             enable gmp, needed for rtmp(t)e support
 211                            if openssl or librtmp is not used [no]
 212   --enable-gnutls          enable gnutls, needed for https support
 213                            if openssl is not used [no]
 214   --disable-iconv          disable iconv [autodetect]
 215   --enable-jni             enable JNI support [no]
 216   --enable-ladspa          enable LADSPA audio filtering [no]
 217   --enable-libass          enable libass subtitles rendering,
 218                            needed for subtitles and ass filter [no]
 219   --enable-libbluray       enable BluRay reading using libbluray [no]
 220   --enable-libbs2b         enable bs2b DSP library [no]
 221   --enable-libcaca         enable textual display using libcaca [no]
 222   --enable-libcelt         enable CELT decoding via libcelt [no]
 223   --enable-libcdio         enable audio CD grabbing with libcdio [no]
 224   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 225                            and libraw1394 [no]
 226   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 227   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 228   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
 229   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
 230   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
 231   --enable-libgme          enable Game Music Emu via libgme [no]
 232   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 233   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 234   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 235   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
 236   --enable-libmodplug      enable ModPlug via libmodplug [no]
 237   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 238   --enable-libnut          enable NUT (de)muxing via libnut,
 239                            native (de)muxer exists [no]
 240   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 241   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 242   --enable-libopencv       enable video filtering via libopencv [no]
 243   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 244   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 245   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
 246   --enable-libopus         enable Opus de/encoding via libopus [no]
 247   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 248   --enable-librubberband   enable rubberband needed for rubberband filter [no]
 249   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 250   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
 251   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 252   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 253   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
 254   --enable-libsoxr         enable Include libsoxr resampling [no]
 255   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 256   --enable-libssh          enable SFTP protocol via libssh [no]
 257   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
 258   --enable-libtheora       enable Theora encoding via libtheora [no]
 259   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 260   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 261   --enable-libvidstab      enable video stabilization using vid.stab [no]
 262   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 263   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 264                            native implementation exists [no]
 265   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 266   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 267   --enable-libwebp         enable WebP encoding via libwebp [no]
 268   --enable-libx264         enable H.264 encoding via x264 [no]
 269   --enable-libx265         enable HEVC encoding via x265 [no]
 270   --enable-libxavs         enable AVS encoding via xavs [no]
 271   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
 272   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
 273   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
 274   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
 275   --enable-libxvid         enable Xvid encoding via xvidcore,
 276                            native MPEG-4/Xvid encoder exists [no]
 277   --enable-libzimg         enable z.lib, needed for zscale filter [no]
 278   --enable-libzmq          enable message passing via libzmq [no]
 279   --enable-libzvbi         enable teletext support via libzvbi [no]
 280   --disable-lzma           disable lzma [autodetect]
 281   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
 282   --enable-mediacodec      enable Android MediaCodec support [no]
 283   --enable-netcdf          enable NetCDF, needed for sofalizer filter [no]
 284   --enable-openal          enable OpenAL 1.1 capture support [no]
 285   --enable-opencl          enable OpenCL code
 286   --enable-opengl          enable OpenGL rendering [no]
 287   --enable-openssl         enable openssl, needed for https support
 288                            if gnutls is not used [no]
 289   --disable-schannel       disable SChannel SSP, needed for TLS support on
 290                            Windows if openssl and gnutls are not used [autodetect]
 291   --disable-sdl2           disable sdl2 [autodetect]
 292   --disable-securetransport disable Secure Transport, needed for TLS support
 293                            on OSX if openssl and gnutls are not used [autodetect]
 294   --disable-xlib           disable xlib [autodetect]
 295   --disable-zlib           disable zlib [autodetect]
 296
 297   The following libraries provide various hardware acceleration features:
 298   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
 299   --disable-cuda           disable dynamically linked Nvidia CUDA code [autodetect]
 300   --disable-cuvid          disable Nvidia CUVID support [autodetect]
 301   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
 302   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
 303   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
 304   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
 305   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
 306   --disable-nvenc          disable Nvidia video encoding code [autodetect]
 307   --enable-omx             enable OpenMAX IL code [no]
 308   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
 309   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
 310   --disable-vda            disable Apple Video Decode Acceleration code [autodetect]
 311   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
 312   --disable-videotoolbox   disable VideoToolbox code [autodetect]
 313
 314 Toolchain options:
 315   --arch=ARCH              select architecture [$arch]
 316   --cpu=CPU                select the minimum required CPU (affects
 317                            instruction selection, may crash on older CPUs)
 318   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 319   --progs-suffix=SUFFIX    program name suffix []
 320   --enable-cross-compile   assume a cross-compiler is used
 321   --sysroot=PATH           root of cross-build tree
 322   --sysinclude=PATH        location of cross-build system headers
 323   --target-os=OS           compiler targets OS [$target_os]
 324   --target-exec=CMD        command to run executables on target
 325   --target-path=DIR        path to view of build directory on target
 326   --target-samples=DIR     path to samples directory on target
 327   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 328   --toolchain=NAME         set tool defaults according to NAME
 329   --nm=NM                  use nm tool NM [$nm_default]
 330   --ar=AR                  use archive tool AR [$ar_default]
 331   --as=AS                  use assembler AS [$as_default]
 332   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
 333   --strip=STRIP            use strip tool STRIP [$strip_default]
 334   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 335   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
 336   --cc=CC                  use C compiler CC [$cc_default]
 337   --cxx=CXX                use C compiler CXX [$cxx_default]
 338   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 339   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 340   --ld=LD                  use linker LD [$ld_default]
 341   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 342   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 343   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 344   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 345   --host-cc=HOSTCC         use host C compiler HOSTCC
 346   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 347   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 348   --host-ld=HOSTLD         use host linker HOSTLD
 349   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 350   --host-libs=HLIBS        use libs HLIBS when linking for host
 351   --host-os=OS             compiler host OS [$target_os]
 352   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 353   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 354   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 355   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 356   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 357   --extra-ldlibflags=ELDFLAGS add ELDFLAGS to LDLIBFLAGS [$LDLIBFLAGS]
 358   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 359   --extra-version=STRING   version string suffix []
 360   --optflags=OPTFLAGS      override optimization-related compiler flags
 361   --build-suffix=SUFFIX    library name suffix []
 362   --enable-pic             build position-independent code
 363   --enable-thumb           compile for Thumb instruction set
 364   --enable-lto             use link-time optimization
 365   --env="ENV=override"     override the environment variables
 366
 367 Advanced options (experts only):
 368   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 369   --custom-allocator=NAME  use a supported custom allocator
 370   --disable-symver         disable symbol versioning
 371   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 372   --disable-safe-bitstream-reader
 373                            disable buffer boundary checking in bitreaders
 374                            (faster, but may crash)
 375   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 376
 377 Optimization options (experts only):
 378   --disable-asm            disable all assembly optimizations
 379   --disable-altivec        disable AltiVec optimizations
 380   --disable-vsx            disable VSX optimizations
 381   --disable-power8         disable POWER8 optimizations
 382   --disable-amd3dnow       disable 3DNow! optimizations
 383   --disable-amd3dnowext    disable 3DNow! extended optimizations
 384   --disable-mmx            disable MMX optimizations
 385   --disable-mmxext         disable MMXEXT optimizations
 386   --disable-sse            disable SSE optimizations
 387   --disable-sse2           disable SSE2 optimizations
 388   --disable-sse3           disable SSE3 optimizations
 389   --disable-ssse3          disable SSSE3 optimizations
 390   --disable-sse4           disable SSE4 optimizations
 391   --disable-sse42          disable SSE4.2 optimizations
 392   --disable-avx            disable AVX optimizations
 393   --disable-xop            disable XOP optimizations
 394   --disable-fma3           disable FMA3 optimizations
 395   --disable-fma4           disable FMA4 optimizations
 396   --disable-avx2           disable AVX2 optimizations
 397   --disable-aesni          disable AESNI optimizations
 398   --disable-armv5te        disable armv5te optimizations
 399   --disable-armv6          disable armv6 optimizations
 400   --disable-armv6t2        disable armv6t2 optimizations
 401   --disable-vfp            disable VFP optimizations
 402   --disable-neon           disable NEON optimizations
 403   --disable-inline-asm     disable use of inline assembly
 404   --disable-yasm           disable use of nasm/yasm assembly
 405   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
 406   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 407   --disable-msa            disable MSA optimizations
 408   --disable-mipsfpu        disable floating point MIPS optimizations
 409   --disable-mmi            disable Loongson SIMD optimizations
 410   --disable-fast-unaligned consider unaligned accesses slow
 411
 412 Developer options (useful when working on FFmpeg itself):
 413   --disable-debug          disable debugging symbols
 414   --enable-debug=LEVEL     set the debug level [$debuglevel]
 415   --disable-optimizations  disable compiler optimizations
 416   --enable-extra-warnings  enable more compiler warnings
 417   --disable-stripping      disable stripping of executables and shared libraries
 418   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 419                            2 causes a slowdown at runtime.
 420   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 421   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 422                            leaks and errors, using the specified valgrind binary.
 423                            Cannot be combined with --target-exec
 424   --enable-ftrapv          Trap arithmetic overflows
 425   --samples=PATH           location of test samples for FATE, if not set use
 426                            \$FATE_SAMPLES at make invocation time.
 427   --enable-neon-clobber-test check NEON registers for clobbering (should be
 428                            used only for debugging purposes)
 429   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 430                            should be used only for debugging purposes)
 431   --enable-random          randomly enable/disable components
 432   --disable-random
 433   --enable-random=LIST     randomly enable/disable specific components or
 434   --disable-random=LIST    component groups. LIST is a comma-separated list
 435                            of NAME[:PROB] entries where NAME is a component
 436                            (group) and PROB the probability associated with
 437                            NAME (default 0.5).
 438   --random-seed=VALUE      seed value for --enable/disable-random
 439   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 440                            (only applies to --disable-optimizations builds)
 441
 442 NOTE: Object files are built at the place where configure is launched.
 443 EOF
 444   exit 0
 445 }
 446
 447 quotes='""'
 448 if test -t 1 && which tput >/dev/null 2>&1; then
 449     ncolors=$(tput colors)
 450     if test -n "$ncolors" && test $ncolors -ge 8; then
 451         bold_color=$(tput bold)
 452         warn_color=$(tput setaf 3)
 453         error_color=$(tput setaf 1)
 454         reset_color=$(tput sgr0)
 455     fi
 456     # 72 used instead of 80 since that's the default of pr
 457     ncols=$(tput cols)
 458 fi
 459 : ${ncols:=72}
 460
 461 log(){
 462     echo "$@" >> $logfile
 463 }
 464
 465 log_file(){
 466     log BEGIN $1
 467     pr -n -t $1 >> $logfile
 468     log END $1
 469 }
 470
 471 warn(){
 472     log "WARNING: $*"
 473     WARNINGS="${WARNINGS}WARNING: $*\n"
 474 }
 475
 476 die(){
 477     log "$@"
 478     echo "$error_color$bold_color$@$reset_color"
 479     cat <<EOF
 480
 481 If you think configure made a mistake, make sure you are using the latest
 482 version from Git.  If the latest version fails, report the problem to the
 483 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 484 EOF
 485     if disabled logging; then
 486         cat <<EOF
 487 Rerun configure with logging enabled (do not use --disable-logging), and
 488 include the log this produces with your report.
 489 EOF
 490     else
 491         cat <<EOF
 492 Include the log file "$logfile" produced by configure as this will help
 493 solve the problem.
 494 EOF
 495     fi
 496     exit 1
 497 }
 498
 499 # Avoid locale weirdness, besides we really just want to translate ASCII.
 500 toupper(){
 501     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 502 }
 503
 504 tolower(){
 505     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 506 }
 507
 508 c_escape(){
 509     echo "$*" | sed 's/["\\]/\\\0/g'
 510 }
 511
 512 sh_quote(){
 513     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 514     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 515     echo "$v"
 516 }
 517
 518 cleanws(){
 519     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 520 }
 521
 522 filter(){
 523     pat=$1
 524     shift
 525     for v; do
 526         eval "case $v in $pat) echo $v ;; esac"
 527     done
 528 }
 529
 530 filter_out(){
 531     pat=$1
 532     shift
 533     for v; do
 534         eval "case $v in $pat) ;; *) echo $v ;; esac"
 535     done
 536 }
 537
 538 map(){
 539     m=$1
 540     shift
 541     for v; do eval $m; done
 542 }
 543
 544 add_suffix(){
 545     suffix=$1
 546     shift
 547     for v; do echo ${v}${suffix}; done
 548 }
 549
 550 set_all(){
 551     value=$1
 552     shift
 553     for var in $*; do
 554         eval $var=$value
 555     done
 556 }
 557
 558 set_weak(){
 559     value=$1
 560     shift
 561     for var; do
 562         eval : \${$var:=$value}
 563     done
 564 }
 565
 566 sanitize_var_name(){
 567     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 568 }
 569
 570 set_safe(){
 571     var=$1
 572     shift
 573     eval $(sanitize_var_name "$var")='$*'
 574 }
 575
 576 get_safe(){
 577     eval echo \$$(sanitize_var_name "$1")
 578 }
 579
 580 pushvar(){
 581     for pvar in $*; do
 582         eval level=\${${pvar}_level:=0}
 583         eval ${pvar}_${level}="\$$pvar"
 584         eval ${pvar}_level=$(($level+1))
 585     done
 586 }
 587
 588 popvar(){
 589     for pvar in $*; do
 590         eval level=\${${pvar}_level:-0}
 591         test $level = 0 && continue
 592         eval level=$(($level-1))
 593         eval $pvar="\${${pvar}_${level}}"
 594         eval ${pvar}_level=$level
 595         eval unset ${pvar}_${level}
 596     done
 597 }
 598
 599 request(){
 600     for var in $*; do
 601         eval ${var}_requested=yes
 602         eval $var=
 603     done
 604 }
 605
 606 enable(){
 607     set_all yes $*
 608 }
 609
 610 disable(){
 611     set_all no $*
 612 }
 613
 614 enable_weak(){
 615     set_weak yes $*
 616 }
 617
 618 disable_weak(){
 619     set_weak no $*
 620 }
 621
 622 enable_safe(){
 623     for var; do
 624         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 625     done
 626 }
 627
 628 disable_safe(){
 629     for var; do
 630         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 631     done
 632 }
 633
 634 do_enable_deep(){
 635     for var; do
 636         enabled $var && continue
 637         eval sel="\$${var}_select"
 638         eval sgs="\$${var}_suggest"
 639         pushvar var sgs
 640         enable_deep $sel
 641         popvar sgs
 642         enable_deep_weak $sgs
 643         popvar var
 644     done
 645 }
 646
 647 enable_deep(){
 648     do_enable_deep $*
 649     enable $*
 650 }
 651
 652 enable_deep_weak(){
 653     for var; do
 654         disabled $var && continue
 655         pushvar var
 656         do_enable_deep $var
 657         popvar var
 658         enable_weak $var
 659     done
 660 }
 661
 662 requested(){
 663     test "${1#!}" = "$1" && op='=' || op=!=
 664     eval test "x\$${1#!}_requested" $op "xyes"
 665 }
 666
 667 enabled(){
 668     test "${1#!}" = "$1" && op='=' || op=!=
 669     eval test "x\$${1#!}" $op "xyes"
 670 }
 671
 672 disabled(){
 673     test "${1#!}" = "$1" && op='=' || op=!=
 674     eval test "x\$${1#!}" $op "xno"
 675 }
 676
 677 enabled_all(){
 678     for opt; do
 679         enabled $opt || return 1
 680     done
 681 }
 682
 683 disabled_all(){
 684     for opt; do
 685         disabled $opt || return 1
 686     done
 687 }
 688
 689 enabled_any(){
 690     for opt; do
 691         enabled $opt && return 0
 692     done
 693 }
 694
 695 disabled_any(){
 696     for opt; do
 697         disabled $opt && return 0
 698     done
 699     return 1
 700 }
 701
 702 set_default(){
 703     for opt; do
 704         eval : \${$opt:=\$${opt}_default}
 705     done
 706 }
 707
 708 is_in(){
 709     value=$1
 710     shift
 711     for var in $*; do
 712         [ $var = $value ] && return 0
 713     done
 714     return 1
 715 }
 716
 717 do_check_deps(){
 718     for cfg; do
 719         cfg="${cfg#!}"
 720         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 721         disabled ${cfg}_checking && continue
 722         enable ${cfg}_checking
 723         append allopts $cfg
 724
 725         eval dep_all="\$${cfg}_deps"
 726         eval dep_any="\$${cfg}_deps_any"
 727         eval dep_sel="\$${cfg}_select"
 728         eval dep_sgs="\$${cfg}_suggest"
 729         eval dep_ifa="\$${cfg}_if"
 730         eval dep_ifn="\$${cfg}_if_any"
 731
 732         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 733         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
 734         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 735
 736         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 737         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 738         enabled_all  $dep_all || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not all dependencies are satisfied: $dep_all"; }
 739         enabled_any  $dep_any || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not any dependency is satisfied: $dep_any"; }
 740         disabled_any $dep_sel && { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some selected dependency is unsatisfied: $dep_sel"; }
 741
 742         if enabled $cfg; then
 743             enable_deep $dep_sel
 744             enable_deep_weak $dep_sgs
 745         fi
 746
 747         disable ${cfg}_checking
 748     done
 749 }
 750
 751 check_deps(){
 752     unset allopts
 753
 754     do_check_deps "$@"
 755
 756     for cfg in $allopts; do
 757         enabled $cfg || continue
 758         eval dep_extralibs="\$${cfg}_extralibs"
 759         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
 760     done
 761 }
 762
 763 print_config(){
 764     pfx=$1
 765     files=$2
 766     shift 2
 767     map 'eval echo "$v \${$v:-no}"' "$@" |
 768     awk "BEGIN { split(\"$files\", files) }
 769         {
 770             c = \"$pfx\" toupper(\$1);
 771             v = \$2;
 772             sub(/yes/, 1, v);
 773             sub(/no/,  0, v);
 774             for (f in files) {
 775                 file = files[f];
 776                 if (file ~ /\\.h\$/) {
 777                     printf(\"#define %s %d\\n\", c, v) >>file;
 778                 } else if (file ~ /\\.asm\$/) {
 779                     printf(\"%%define %s %d\\n\", c, v) >>file;
 780                 } else if (file ~ /\\.mak\$/) {
 781                     n = -v ? \"\" : \"!\";
 782                     printf(\"%s%s=yes\\n\", n, c) >>file;
 783                 } else if (file ~ /\\.texi\$/) {
 784                     pre = -v ? \"\" : \"@c \";
 785                     yesno = \$2;
 786                     c2 = tolower(c);
 787                     gsub(/_/, \"-\", c2);
 788                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 789                 }
 790             }
 791         }"
 792 }
 793
 794 print_enabled(){
 795     suf=$1
 796     shift
 797     for v; do
 798         enabled $v && printf "%s\n" ${v%$suf}
 799     done
 800 }
 801
 802 append(){
 803     var=$1
 804     shift
 805     eval "$var=\"\$$var $*\""
 806 }
 807
 808 prepend(){
 809     var=$1
 810     shift
 811     eval "$var=\"$* \$$var\""
 812 }
 813
 814 unique(){
 815     var=$1
 816     uniq_list=""
 817     for tok in $(eval echo \$$var); do
 818         uniq_list="$(filter_out $tok $uniq_list) $tok"
 819     done
 820     eval "$var=\"${uniq_list}\""
 821 }
 822
 823 add_cppflags(){
 824     append CPPFLAGS "$@"
 825 }
 826
 827 add_cflags(){
 828     append CFLAGS $($cflags_filter "$@")
 829 }
 830
 831 add_cxxflags(){
 832     append CXXFLAGS $($cflags_filter "$@")
 833 }
 834
 835 add_asflags(){
 836     append ASFLAGS $($asflags_filter "$@")
 837 }
 838
 839 add_objcflags(){
 840     append OBJCFLAGS $($objcflags_filter "$@")
 841 }
 842
 843 add_ldflags(){
 844     append LDFLAGS $($ldflags_filter "$@")
 845 }
 846
 847 add_ldexeflags(){
 848     append LDEXEFLAGS $($ldflags_filter "$@")
 849 }
 850
 851 add_ldlibflags(){
 852     append LDLIBFLAGS $($ldflags_filter "$@")
 853 }
 854
 855 add_stripflags(){
 856     append ASMSTRIPFLAGS "$@"
 857 }
 858
 859 add_extralibs(){
 860     prepend extralibs $($ldflags_filter "$@")
 861 }
 862
 863 add_host_cppflags(){
 864     append host_cppflags "$@"
 865 }
 866
 867 add_host_cflags(){
 868     append host_cflags $($host_cflags_filter "$@")
 869 }
 870
 871 add_host_ldflags(){
 872     append host_ldflags $($host_ldflags_filter "$@")
 873 }
 874
 875 add_compat(){
 876     append compat_objs $1
 877     shift
 878     map 'add_cppflags -D$v' "$@"
 879 }
 880
 881 check_cmd(){
 882     log "$@"
 883     "$@" >> $logfile 2>&1
 884 }
 885
 886 check_stat(){
 887     log check_stat "$@"
 888     stat "$1" >> $logfile 2>&1
 889 }
 890
 891 cc_o(){
 892     eval printf '%s\\n' $CC_O
 893 }
 894
 895 cc_e(){
 896     eval printf '%s\\n' $CC_E
 897 }
 898
 899 check_cc(){
 900     log check_cc "$@"
 901     cat > $TMPC
 902     log_file $TMPC
 903     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 904 }
 905
 906 check_cxx(){
 907     log check_cxx "$@"
 908     cat > $TMPCPP
 909     log_file $TMPCPP
 910     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 911 }
 912
 913 check_objcc(){
 914     log check_objcc "$@"
 915     cat > $TMPM
 916     log_file $TMPM
 917     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
 918 }
 919
 920 check_cpp(){
 921     log check_cpp "$@"
 922     cat > $TMPC
 923     log_file $TMPC
 924     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 925 }
 926
 927 as_o(){
 928     eval printf '%s\\n' $AS_O
 929 }
 930
 931 check_as(){
 932     log check_as "$@"
 933     cat > $TMPS
 934     log_file $TMPS
 935     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 936 }
 937
 938 check_inline_asm(){
 939     log check_inline_asm "$@"
 940     name="$1"
 941     code="$2"
 942     shift 2
 943     disable $name
 944     check_cc "$@" <<EOF && enable $name
 945 void foo(void){ __asm__ volatile($code); }
 946 EOF
 947 }
 948
 949 check_inline_asm_flags(){
 950     log check_inline_asm_flags "$@"
 951     name="$1"
 952     code="$2"
 953     flags=''
 954     shift 2
 955     while [ "$1" != "" ]; do
 956       append flags $1
 957       shift
 958     done;
 959     disable $name
 960     cat > $TMPC <<EOF
 961 void foo(void){ __asm__ volatile($code); }
 962 EOF
 963     log_file $TMPC
 964     check_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
 965     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
 966 }
 967
 968 check_insn(){
 969     log check_insn "$@"
 970     check_inline_asm ${1}_inline "\"$2\""
 971     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 972 }
 973
 974 check_yasm(){
 975     log check_yasm "$@"
 976     echo "$1" > $TMPS
 977     log_file $TMPS
 978     shift 1
 979     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
 980 }
 981
 982 ld_o(){
 983     eval printf '%s\\n' $LD_O
 984 }
 985
 986 check_ld(){
 987     log check_ld "$@"
 988     type=$1
 989     shift 1
 990     flags=$(filter_out '-l*|*.so' $@)
 991     libs=$(filter '-l*|*.so' $@)
 992     check_$type $($cflags_filter $flags) || return
 993     flags=$($ldflags_filter $flags)
 994     libs=$($ldflags_filter $libs)
 995     check_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
 996 }
 997
 998 print_include(){
 999     hdr=$1
1000     test "${hdr%.h}" = "${hdr}" &&
1001         echo "#include $hdr"    ||
1002         echo "#include <$hdr>"
1003 }
1004
1005 check_code(){
1006     log check_code "$@"
1007     check=$1
1008     headers=$2
1009     code=$3
1010     shift 3
1011     {
1012         for hdr in $headers; do
1013             print_include $hdr
1014         done
1015         echo "int main(void) { $code; return 0; }"
1016     } | check_$check "$@"
1017 }
1018
1019 check_cppflags(){
1020     log check_cppflags "$@"
1021     check_cpp "$@" <<EOF && append CPPFLAGS "$@"
1022 int x;
1023 EOF
1024 }
1025
1026 test_cflags(){
1027     log test_cflags "$@"
1028     set -- $($cflags_filter "$@")
1029     check_cc "$@" <<EOF
1030 int x;
1031 EOF
1032 }
1033
1034 check_cflags(){
1035     log check_cflags "$@"
1036     test_cflags "$@" && add_cflags "$@"
1037 }
1038
1039 check_cxxflags(){
1040     log check_cxxflags "$@"
1041     set -- $($cflags_filter "$@")
1042     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
1043 int x;
1044 EOF
1045 }
1046
1047 test_objcflags(){
1048     log test_objcflags "$@"
1049     set -- $($objcflags_filter "$@")
1050     check_objcc "$@" <<EOF
1051 int x;
1052 EOF
1053 }
1054
1055 check_objcflags(){
1056     log check_objcflags "$@"
1057     test_objcflags "$@" && add_objcflags "$@"
1058 }
1059
1060 test_ldflags(){
1061     log test_ldflags "$@"
1062     check_ld "cc" "$@" <<EOF
1063 int main(void){ return 0; }
1064 EOF
1065 }
1066
1067 check_ldflags(){
1068     log check_ldflags "$@"
1069     test_ldflags "$@" && add_ldflags "$@"
1070 }
1071
1072 test_stripflags(){
1073     log test_stripflags "$@"
1074     # call check_cc to get a fresh TMPO
1075     check_cc <<EOF
1076 int main(void) { return 0; }
1077 EOF
1078     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1079 }
1080
1081 check_stripflags(){
1082     log check_stripflags "$@"
1083     test_stripflags "$@" && add_stripflags "$@"
1084 }
1085
1086 check_header(){
1087     log check_header "$@"
1088     header=$1
1089     shift
1090     disable_safe $header
1091     check_cpp "$@" <<EOF && enable_safe $header
1092 #include <$header>
1093 int x;
1094 EOF
1095 }
1096
1097 check_header_objcc(){
1098     log check_header_objcc "$@"
1099     rm -f -- "$TMPO"
1100     header=$1
1101     shift
1102     disable_safe $header
1103     {
1104        echo "#include <$header>"
1105        echo "int main(void) { return 0; }"
1106     } | check_objcc && check_stat "$TMPO" && enable_safe $headers
1107 }
1108
1109 check_func(){
1110     log check_func "$@"
1111     func=$1
1112     shift
1113     disable $func
1114     check_ld "cc" "$@" <<EOF && enable $func
1115 extern int $func();
1116 int main(void){ $func(); }
1117 EOF
1118 }
1119
1120 check_complexfunc(){
1121     log check_complexfunc "$@"
1122     func=$1
1123     narg=$2
1124     shift 2
1125     test $narg = 2 && args="f, g" || args="f * I"
1126     disable $func
1127     check_ld "cc" "$@" <<EOF && enable $func
1128 #include <complex.h>
1129 #include <math.h>
1130 float foo(complex float f, complex float g) { return $func($args); }
1131 int main(void){ return (int) foo; }
1132 EOF
1133 }
1134
1135 check_mathfunc(){
1136     log check_mathfunc "$@"
1137     func=$1
1138     narg=$2
1139     shift 2
1140     test $narg = 2 && args="f, g" || args="f"
1141     disable $func
1142     check_ld "cc" "$@" <<EOF && enable $func
1143 #include <math.h>
1144 float foo(float f, float g) { return $func($args); }
1145 int main(void){ return (int) foo; }
1146 EOF
1147 }
1148
1149 check_func_headers(){
1150     log check_func_headers "$@"
1151     headers=$1
1152     funcs=$2
1153     shift 2
1154     {
1155         for hdr in $headers; do
1156             print_include $hdr
1157         done
1158         echo "#include <stdint.h>"
1159         for func in $funcs; do
1160             echo "long check_$func(void) { return (long) $func; }"
1161         done
1162         echo "int main(void) { int ret = 0;"
1163         # LTO could optimize out the test functions without this
1164         for func in $funcs; do
1165             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1166         done
1167         echo "return ret; }"
1168     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1169 }
1170
1171 check_class_headers_cpp(){
1172     log check_class_headers_cpp "$@"
1173     headers=$1
1174     classes=$2
1175     shift 2
1176     {
1177         for hdr in $headers; do
1178             echo "#include <$hdr>"
1179         done
1180         echo "int main(void) { "
1181         i=1
1182         for class in $classes; do
1183             echo "$class obj$i;"
1184             i=$(expr $i + 1)
1185         done
1186         echo "return 0; }"
1187     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1188 }
1189
1190 check_cpp_condition(){
1191     log check_cpp_condition "$@"
1192     header=$1
1193     condition=$2
1194     shift 2
1195     check_cpp "$@" <<EOF
1196 #include <$header>
1197 #if !($condition)
1198 #error "unsatisfied condition: $condition"
1199 #endif
1200 EOF
1201 }
1202
1203 test_cflags_cc(){
1204     log test_cflags_cc "$@"
1205     flags=$1
1206     header=$2
1207     condition=$3
1208     shift 3
1209     set -- $($cflags_filter "$flags")
1210     check_cc "$@" <<EOF
1211 #include <$header>
1212 #if !($condition)
1213 #error "unsatisfied condition: $condition"
1214 #endif
1215 EOF
1216 }
1217
1218 check_lib(){
1219     log check_lib "$@"
1220     headers="$1"
1221     funcs="$2"
1222     shift 2
1223     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1224 }
1225
1226 check_lib_cpp(){
1227     log check_lib_cpp "$@"
1228     headers="$1"
1229     classes="$2"
1230     shift 2
1231     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1232 }
1233
1234 check_pkg_config(){
1235     log check_pkg_config "$@"
1236     pkgandversion="$1"
1237     pkg="${1%% *}"
1238     headers="$2"
1239     funcs="$3"
1240     shift 3
1241     check_cmd $pkg_config --exists --print-errors $pkgandversion || return
1242     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1243     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1244     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1245         set_safe "${pkg}_cflags" $pkg_cflags   &&
1246         set_safe "${pkg}_libs"   $pkg_libs
1247 }
1248
1249 check_exec(){
1250     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1251 }
1252
1253 check_exec_crash(){
1254     code=$(cat)
1255
1256     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1257     # are safe but may not be available everywhere.  Thus we use
1258     # raise(SIGTERM) instead.  The check is run in a subshell so we
1259     # can redirect the "Terminated" message from the shell.  SIGBUS
1260     # is not defined by standard C so it is used conditionally.
1261
1262     (check_exec "$@") >> $logfile 2>&1 <<EOF
1263 #include <signal.h>
1264 static void sighandler(int sig){
1265     raise(SIGTERM);
1266 }
1267 int foo(void){
1268     $code
1269 }
1270 int (*func_ptr)(void) = foo;
1271 int main(void){
1272     signal(SIGILL, sighandler);
1273     signal(SIGFPE, sighandler);
1274     signal(SIGSEGV, sighandler);
1275 #ifdef SIGBUS
1276     signal(SIGBUS, sighandler);
1277 #endif
1278     return func_ptr();
1279 }
1280 EOF
1281 }
1282
1283 check_type(){
1284     log check_type "$@"
1285     headers=$1
1286     type=$2
1287     shift 2
1288     disable_safe "$type"
1289     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1290 }
1291
1292 check_struct(){
1293     log check_struct "$@"
1294     headers=$1
1295     struct=$2
1296     member=$3
1297     shift 3
1298     disable_safe "${struct}_${member}"
1299     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1300         enable_safe "${struct}_${member}"
1301 }
1302
1303 check_builtin(){
1304     log check_builtin "$@"
1305     name=$1
1306     headers=$2
1307     builtin=$3
1308     shift 3
1309     disable "$name"
1310     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1311 }
1312
1313 check_compile_assert(){
1314     log check_compile_assert "$@"
1315     name=$1
1316     headers=$2
1317     condition=$3
1318     shift 3
1319     disable "$name"
1320     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1321 }
1322
1323 require(){
1324     name="$1"
1325     headers="$2"
1326     func="$3"
1327     shift 3
1328     check_lib "$headers" $func "$@" || die "ERROR: $name not found"
1329 }
1330
1331 require_cpp(){
1332     name="$1"
1333     headers="$2"
1334     classes="$3"
1335     shift 3
1336     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1337 }
1338
1339 use_pkg_config(){
1340     pkg="$1"
1341     check_pkg_config "$@" || return 1
1342     add_cflags    $(get_safe "${pkg}_cflags")
1343     add_extralibs $(get_safe "${pkg}_libs")
1344 }
1345
1346 require_pkg_config(){
1347     use_pkg_config "$@" || die "ERROR: $pkg not found using pkg-config$pkg_config_fail_message"
1348 }
1349
1350 require_libfreetype(){
1351     log require_libfreetype "$@"
1352     pkg="freetype2"
1353     check_cmd $pkg_config --exists --print-errors $pkg \
1354       || die "ERROR: $pkg not found"
1355     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1356     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1357     {
1358         echo "#include <ft2build.h>"
1359         echo "#include FT_FREETYPE_H"
1360         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1361         echo "int main(void) { return 0; }"
1362     } | check_ld "cc" $pkg_cflags $pkg_libs \
1363       && set_safe "${pkg}_cflags" $pkg_cflags \
1364       && set_safe "${pkg}_libs"   $pkg_libs \
1365       || die "ERROR: $pkg not found"
1366     add_cflags    $(get_safe "${pkg}_cflags")
1367     add_extralibs $(get_safe "${pkg}_libs")
1368 }
1369
1370 hostcc_e(){
1371     eval printf '%s\\n' $HOSTCC_E
1372 }
1373
1374 hostcc_o(){
1375     eval printf '%s\\n' $HOSTCC_O
1376 }
1377
1378 check_host_cc(){
1379     log check_host_cc "$@"
1380     cat > $TMPC
1381     log_file $TMPC
1382     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1383 }
1384
1385 check_host_cpp(){
1386     log check_host_cpp "$@"
1387     cat > $TMPC
1388     log_file $TMPC
1389     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1390 }
1391
1392 check_host_cppflags(){
1393     log check_host_cppflags "$@"
1394     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1395 int x;
1396 EOF
1397 }
1398
1399 check_host_cflags(){
1400     log check_host_cflags "$@"
1401     set -- $($host_cflags_filter "$@")
1402     check_host_cc "$@" <<EOF && append host_cflags "$@"
1403 int x;
1404 EOF
1405 }
1406
1407 check_host_cpp_condition(){
1408     log check_host_cpp_condition "$@"
1409     header=$1
1410     condition=$2
1411     shift 2
1412     check_host_cpp "$@" <<EOF
1413 #include <$header>
1414 #if !($condition)
1415 #error "unsatisfied condition: $condition"
1416 #endif
1417 EOF
1418 }
1419
1420 cp_if_changed(){
1421     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1422     mkdir -p "$(dirname $2)"
1423     $cp_f "$1" "$2"
1424 }
1425
1426 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1427 # system-dependent things.
1428
1429 AVCODEC_COMPONENTS="
1430     bsfs
1431     decoders
1432     encoders
1433     hwaccels
1434     parsers
1435 "
1436
1437 AVDEVICE_COMPONENTS="
1438     indevs
1439     outdevs
1440 "
1441 AVFILTER_COMPONENTS="
1442     filters
1443 "
1444 AVFORMAT_COMPONENTS="
1445     demuxers
1446     muxers
1447     protocols
1448 "
1449
1450 AVRESAMPLE_COMPONENTS=""
1451 AVUTIL_COMPONENTS=""
1452
1453 COMPONENT_LIST="
1454     $AVCODEC_COMPONENTS
1455     $AVDEVICE_COMPONENTS
1456     $AVFILTER_COMPONENTS
1457     $AVFORMAT_COMPONENTS
1458     $AVRESAMPLE_COMPONENTS
1459     $AVUTIL_COMPONENTS
1460 "
1461
1462 EXAMPLE_LIST="
1463     avio_dir_cmd_example
1464     avio_reading_example
1465     decode_audio_example
1466     decode_video_example
1467     demuxing_decoding_example
1468     encode_audio_example
1469     encode_video_example
1470     extract_mvs_example
1471     filter_audio_example
1472     filtering_audio_example
1473     filtering_video_example
1474     http_multiclient_example
1475     metadata_example
1476     muxing_example
1477     qsvdec_example
1478     remuxing_example
1479     resampling_audio_example
1480     scaling_video_example
1481     transcode_aac_example
1482     transcoding_example
1483 "
1484 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1485     bzlib
1486     iconv
1487     libxcb
1488     libxcb_shm
1489     libxcb_shape
1490     libxcb_xfixes
1491     lzma
1492     schannel
1493     sdl
1494     sdl2
1495     securetransport
1496     xlib
1497     zlib
1498 "
1499
1500 EXTERNAL_LIBRARY_GPL_LIST="
1501     frei0r
1502     libcdio
1503     librubberband
1504     libvidstab
1505     libx264
1506     libx265
1507     libxavs
1508     libxvid
1509 "
1510
1511 EXTERNAL_LIBRARY_NONFREE_LIST="
1512     libfdk_aac
1513     openssl
1514 "
1515
1516 EXTERNAL_LIBRARY_VERSION3_LIST="
1517     gmp
1518     libopencore_amrnb
1519     libopencore_amrwb
1520     libvo_amrwbenc
1521 "
1522
1523 EXTERNAL_LIBRARY_GPLV3_LIST="
1524     libsmbclient
1525 "
1526
1527 EXTERNAL_LIBRARY_LIST="
1528     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1529     $EXTERNAL_LIBRARY_GPL_LIST
1530     $EXTERNAL_LIBRARY_NONFREE_LIST
1531     $EXTERNAL_LIBRARY_VERSION3_LIST
1532     $EXTERNAL_LIBRARY_GPLV3_LIST
1533     avisynth
1534     chromaprint
1535     crystalhd
1536     decklink
1537     gcrypt
1538     gnutls
1539     jni
1540     ladspa
1541     libass
1542     libbluray
1543     libbs2b
1544     libcaca
1545     libcelt
1546     libdc1394
1547     libflite
1548     libfontconfig
1549     libfreetype
1550     libfribidi
1551     libgme
1552     libgsm
1553     libiec61883
1554     libilbc
1555     libkvazaar
1556     libmodplug
1557     libmp3lame
1558     libnut
1559     libopencv
1560     libopenh264
1561     libopenjpeg
1562     libopenmpt
1563     libopus
1564     libpulse
1565     librtmp
1566     libschroedinger
1567     libshine
1568     libsmbclient
1569     libsnappy
1570     libsoxr
1571     libspeex
1572     libssh
1573     libtesseract
1574     libtheora
1575     libtwolame
1576     libv4l2
1577     libvorbis
1578     libvpx
1579     libwavpack
1580     libwebp
1581     libzimg
1582     libzmq
1583     libzvbi
1584     mediacodec
1585     netcdf
1586     openal
1587     opencl
1588     opengl
1589     videotoolbox
1590 "
1591 HWACCEL_AUTODETECT_LIBRARY_LIST="
1592     audiotoolbox
1593     cuda
1594     cuvid
1595     d3d11va
1596     dxva2
1597     nvenc
1598     vaapi
1599     vda
1600     vdpau
1601     videotoolbox_hwaccel
1602     xvmc
1603 "
1604
1605 HWACCEL_LIBRARY_NONFREE_LIST="
1606     libnpp
1607 "
1608
1609 HWACCEL_LIBRARY_LIST="
1610     $HWACCEL_AUTODETECT_LIBRARY_LIST
1611     $HWACCEL_LIBRARY_NONFREE_LIST
1612     libmfx
1613     mmal
1614     omx
1615 "
1616
1617 DOCUMENT_LIST="
1618     doc
1619     htmlpages
1620     manpages
1621     podpages
1622     txtpages
1623 "
1624
1625 FEATURE_LIST="
1626     ftrapv
1627     gray
1628     hardcoded_tables
1629     omx_rpi
1630     runtime_cpudetect
1631     safe_bitstream_reader
1632     shared
1633     small
1634     static
1635     swscale_alpha
1636 "
1637
1638 LIBRARY_LIST="
1639     avcodec
1640     avdevice
1641     avfilter
1642     avformat
1643     avresample
1644     avutil
1645     postproc
1646     swresample
1647     swscale
1648 "
1649
1650 LICENSE_LIST="
1651     gpl
1652     nonfree
1653     version3
1654 "
1655
1656 PROGRAM_LIST="
1657     ffplay
1658     ffprobe
1659     ffserver
1660     ffmpeg
1661 "
1662
1663 SUBSYSTEM_LIST="
1664     dct
1665     dwt
1666     error_resilience
1667     faan
1668     fast_unaligned
1669     fft
1670     lsp
1671     lzo
1672     mdct
1673     pixelutils
1674     network
1675     rdft
1676 "
1677
1678 CONFIG_LIST="
1679     $COMPONENT_LIST
1680     $DOCUMENT_LIST
1681     $EXAMPLE_LIST
1682     $EXTERNAL_LIBRARY_LIST
1683     $HWACCEL_LIBRARY_LIST
1684     $FEATURE_LIST
1685     $LICENSE_LIST
1686     $LIBRARY_LIST
1687     $PROGRAM_LIST
1688     $SUBSYSTEM_LIST
1689     fontconfig
1690     memory_poisoning
1691     neon_clobber_test
1692     pic
1693     raise_major
1694     thumb
1695     valgrind_backtrace
1696     xmm_clobber_test
1697 "
1698
1699 THREADS_LIST="
1700     pthreads
1701     os2threads
1702     w32threads
1703 "
1704
1705 ATOMICS_LIST="
1706     atomics_gcc
1707     atomics_suncc
1708     atomics_win32
1709 "
1710
1711 AUTODETECT_LIBS="
1712     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1713     $HWACCEL_AUTODETECT_LIBRARY_LIST
1714     $THREADS_LIST
1715 "
1716
1717 ARCH_LIST="
1718     aarch64
1719     alpha
1720     arm
1721     avr32
1722     avr32_ap
1723     avr32_uc
1724     bfin
1725     ia64
1726     m68k
1727     mips
1728     mips64
1729     parisc
1730     ppc
1731     ppc64
1732     s390
1733     sh4
1734     sparc
1735     sparc64
1736     tilegx
1737     tilepro
1738     tomi
1739     x86
1740     x86_32
1741     x86_64
1742 "
1743
1744 ARCH_EXT_LIST_ARM="
1745     armv5te
1746     armv6
1747     armv6t2
1748     armv8
1749     neon
1750     vfp
1751     vfpv3
1752     setend
1753 "
1754
1755 ARCH_EXT_LIST_MIPS="
1756     mipsfpu
1757     mips32r2
1758     mips32r5
1759     mips64r2
1760     mips32r6
1761     mips64r6
1762     mipsdsp
1763     mipsdspr2
1764     msa
1765 "
1766
1767 ARCH_EXT_LIST_LOONGSON="
1768     loongson2
1769     loongson3
1770     mmi
1771 "
1772
1773 ARCH_EXT_LIST_X86_SIMD="
1774     aesni
1775     amd3dnow
1776     amd3dnowext
1777     avx
1778     avx2
1779     fma3
1780     fma4
1781     mmx
1782     mmxext
1783     sse
1784     sse2
1785     sse3
1786     sse4
1787     sse42
1788     ssse3
1789     xop
1790 "
1791
1792 ARCH_EXT_LIST_PPC="
1793     altivec
1794     dcbzl
1795     ldbrx
1796     power8
1797     ppc4xx
1798     vsx
1799 "
1800
1801 ARCH_EXT_LIST_X86="
1802     $ARCH_EXT_LIST_X86_SIMD
1803     cpunop
1804     i686
1805 "
1806
1807 ARCH_EXT_LIST="
1808     $ARCH_EXT_LIST_ARM
1809     $ARCH_EXT_LIST_PPC
1810     $ARCH_EXT_LIST_X86
1811     $ARCH_EXT_LIST_MIPS
1812     $ARCH_EXT_LIST_LOONGSON
1813 "
1814
1815 ARCH_FEATURES="
1816     aligned_stack
1817     fast_64bit
1818     fast_clz
1819     fast_cmov
1820     local_aligned_8
1821     local_aligned_16
1822     local_aligned_32
1823     simd_align_16
1824     simd_align_32
1825 "
1826
1827 BUILTIN_LIST="
1828     atomic_cas_ptr
1829     machine_rw_barrier
1830     MemoryBarrier
1831     mm_empty
1832     rdtsc
1833     sarestart
1834     sem_timedwait
1835     sync_val_compare_and_swap
1836 "
1837 HAVE_LIST_CMDLINE="
1838     inline_asm
1839     symver
1840     yasm
1841 "
1842
1843 HAVE_LIST_PUB="
1844     bigendian
1845     fast_unaligned
1846 "
1847
1848 HEADERS_LIST="
1849     alsa_asoundlib_h
1850     altivec_h
1851     arpa_inet_h
1852     asm_types_h
1853     cdio_paranoia_h
1854     cdio_paranoia_paranoia_h
1855     cuda_h
1856     dispatch_dispatch_h
1857     dev_bktr_ioctl_bt848_h
1858     dev_bktr_ioctl_meteor_h
1859     dev_ic_bt8xx_h
1860     dev_video_bktr_ioctl_bt848_h
1861     dev_video_meteor_ioctl_meteor_h
1862     direct_h
1863     dirent_h
1864     dlfcn_h
1865     d3d11_h
1866     dxva_h
1867     ES2_gl_h
1868     gsm_h
1869     io_h
1870     mach_mach_time_h
1871     machine_ioctl_bt848_h
1872     machine_ioctl_meteor_h
1873     malloc_h
1874     opencv2_core_core_c_h
1875     openjpeg_2_1_openjpeg_h
1876     openjpeg_2_0_openjpeg_h
1877     openjpeg_1_5_openjpeg_h
1878     OpenGL_gl3_h
1879     poll_h
1880     sndio_h
1881     soundcard_h
1882     stdatomic_h
1883     sys_mman_h
1884     sys_param_h
1885     sys_resource_h
1886     sys_select_h
1887     sys_soundcard_h
1888     sys_time_h
1889     sys_un_h
1890     sys_videoio_h
1891     termios_h
1892     udplite_h
1893     unistd_h
1894     valgrind_valgrind_h
1895     windows_h
1896     winsock2_h
1897 "
1898
1899 INTRINSICS_LIST="
1900     intrinsics_neon
1901 "
1902
1903 COMPLEX_FUNCS="
1904     cabs
1905     cexp
1906 "
1907
1908 MATH_FUNCS="
1909     atanf
1910     atan2f
1911     cbrt
1912     cbrtf
1913     copysign
1914     cosf
1915     erf
1916     exp2
1917     exp2f
1918     expf
1919     hypot
1920     isfinite
1921     isinf
1922     isnan
1923     ldexpf
1924     llrint
1925     llrintf
1926     log2
1927     log2f
1928     log10f
1929     lrint
1930     lrintf
1931     powf
1932     rint
1933     round
1934     roundf
1935     sinf
1936     trunc
1937     truncf
1938 "
1939
1940 SYSTEM_FUNCS="
1941     access
1942     aligned_malloc
1943     arc4random
1944     clock_gettime
1945     closesocket
1946     CommandLineToArgvW
1947     CoTaskMemFree
1948     CryptGenRandom
1949     dlopen
1950     fcntl
1951     flt_lim
1952     fork
1953     getaddrinfo
1954     gethrtime
1955     getopt
1956     GetProcessAffinityMask
1957     GetProcessMemoryInfo
1958     GetProcessTimes
1959     getrusage
1960     GetSystemTimeAsFileTime
1961     gettimeofday
1962     glob
1963     glXGetProcAddress
1964     gmtime_r
1965     inet_aton
1966     isatty
1967     jack_port_get_latency_range
1968     kbhit
1969     LoadLibrary
1970     localtime_r
1971     lstat
1972     lzo1x_999_compress
1973     mach_absolute_time
1974     MapViewOfFile
1975     memalign
1976     mkstemp
1977     mmap
1978     mprotect
1979     nanosleep
1980     PeekNamedPipe
1981     posix_memalign
1982     pthread_cancel
1983     sched_getaffinity
1984     SetConsoleTextAttribute
1985     SetConsoleCtrlHandler
1986     setmode
1987     setrlimit
1988     Sleep
1989     strerror_r
1990     sysconf
1991     sysctl
1992     usleep
1993     UTGetOSTypeFromString
1994     VirtualAlloc
1995     wglGetProcAddress
1996 "
1997
1998 TOOLCHAIN_FEATURES="
1999     as_dn_directive
2000     as_fpu_directive
2001     as_func
2002     as_object_arch
2003     asm_mod_q
2004     attribute_may_alias
2005     attribute_packed
2006     ebp_available
2007     ebx_available
2008     gnu_as
2009     gnu_windres
2010     ibm_asm
2011     inline_asm_direct_symbol_refs
2012     inline_asm_labels
2013     inline_asm_nonlocal_labels
2014     pragma_deprecated
2015     rsync_contimeout
2016     symver_asm_label
2017     symver_gnu_asm
2018     vfp_args
2019     xform_asm
2020     xmm_clobbers
2021 "
2022
2023 TYPES_LIST="
2024     CONDITION_VARIABLE_Ptr
2025     socklen_t
2026     struct_addrinfo
2027     struct_group_source_req
2028     struct_ip_mreq_source
2029     struct_ipv6_mreq
2030     struct_msghdr_msg_flags
2031     struct_pollfd
2032     struct_rusage_ru_maxrss
2033     struct_sctp_event_subscribe
2034     struct_sockaddr_in6
2035     struct_sockaddr_sa_len
2036     struct_sockaddr_storage
2037     struct_stat_st_mtim_tv_nsec
2038     struct_v4l2_frmivalenum_discrete
2039 "
2040
2041 HAVE_LIST="
2042     $ARCH_EXT_LIST
2043     $(add_suffix _external $ARCH_EXT_LIST)
2044     $(add_suffix _inline   $ARCH_EXT_LIST)
2045     $ARCH_FEATURES
2046     $ATOMICS_LIST
2047     $BUILTIN_LIST
2048     $COMPLEX_FUNCS
2049     $HAVE_LIST_CMDLINE
2050     $HAVE_LIST_PUB
2051     $HEADERS_LIST
2052     $INTRINSICS_LIST
2053     $MATH_FUNCS
2054     $SYSTEM_FUNCS
2055     $THREADS_LIST
2056     $TOOLCHAIN_FEATURES
2057     $TYPES_LIST
2058     atomics_native
2059     dos_paths
2060     dxva2_lib
2061     dxva2api_cobj
2062     libc_msvcrt
2063     libdc1394_1
2064     libdc1394_2
2065     makeinfo
2066     makeinfo_html
2067     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2068     perl
2069     pod2man
2070     sdl2
2071     section_data_rel_ro
2072     texi2html
2073     threads
2074     vaapi_drm
2075     vaapi_x11
2076     vdpau_x11
2077     winrt
2078     xlib
2079 "
2080
2081 # options emitted with CONFIG_ prefix but not available on the command line
2082 CONFIG_EXTRA="
2083     aandcttables
2084     ac3dsp
2085     audio_frame_queue
2086     audiodsp
2087     blockdsp
2088     bswapdsp
2089     cabac
2090     dirac_parse
2091     dvprofile
2092     exif
2093     faandct
2094     faanidct
2095     fdctdsp
2096     flacdsp
2097     fmtconvert
2098     frame_thread_encoder
2099     g722dsp
2100     golomb
2101     gplv3
2102     h263dsp
2103     h264chroma
2104     h264dsp
2105     h264parse
2106     h264pred
2107     h264qpel
2108     hpeldsp
2109     huffman
2110     huffyuvdsp
2111     huffyuvencdsp
2112     idctdsp
2113     iirfilter
2114     mdct15
2115     intrax8
2116     iso_media
2117     ividsp
2118     jpegtables
2119     lgplv3
2120     libx262
2121     llauddsp
2122     llviddsp
2123     llvidencdsp
2124     lpc
2125     lzf
2126     me_cmp
2127     mpeg_er
2128     mpegaudio
2129     mpegaudiodsp
2130     mpegvideo
2131     mpegvideoenc
2132     mss34dsp
2133     pixblockdsp
2134     qpeldsp
2135     qsv
2136     qsvdec
2137     qsvenc
2138     rangecoder
2139     riffdec
2140     riffenc
2141     rtpdec
2142     rtpenc_chain
2143     rv34dsp
2144     sinewin
2145     snappy
2146     srtp
2147     startcode
2148     texturedsp
2149     texturedspenc
2150     tpeldsp
2151     vaapi_encode
2152     vc1dsp
2153     videodsp
2154     vp3dsp
2155     vp56dsp
2156     vp8dsp
2157     vt_bt2020
2158     wma_freqs
2159     wmv2dsp
2160 "
2161
2162 CMDLINE_SELECT="
2163     $ARCH_EXT_LIST
2164     $CONFIG_LIST
2165     $HAVE_LIST_CMDLINE
2166     $THREADS_LIST
2167     asm
2168     cross_compile
2169     debug
2170     extra_warnings
2171     logging
2172     lto
2173     optimizations
2174     rpath
2175     stripping
2176 "
2177
2178 PATHS_LIST="
2179     bindir
2180     datadir
2181     docdir
2182     incdir
2183     libdir
2184     mandir
2185     pkgconfigdir
2186     prefix
2187     shlibdir
2188     install_name_dir
2189 "
2190
2191 CMDLINE_SET="
2192     $PATHS_LIST
2193     ar
2194     arch
2195     as
2196     assert_level
2197     build_suffix
2198     cc
2199     objcc
2200     cpu
2201     cross_prefix
2202     custom_allocator
2203     cxx
2204     dep_cc
2205     doxygen
2206     env
2207     extra_version
2208     gas
2209     host_cc
2210     host_cflags
2211     host_ld
2212     host_ldflags
2213     host_libs
2214     host_os
2215     install
2216     ld
2217     ln_s
2218     logfile
2219     malloc_prefix
2220     nm
2221     optflags
2222     pkg_config
2223     pkg_config_flags
2224     progs_suffix
2225     random_seed
2226     ranlib
2227     samples
2228     strip
2229     sws_max_filter_size
2230     sysinclude
2231     sysroot
2232     target_exec
2233     target_os
2234     target_path
2235     target_samples
2236     tempprefix
2237     toolchain
2238     valgrind
2239     yasmexe
2240 "
2241
2242 CMDLINE_APPEND="
2243     extra_cflags
2244     extra_cxxflags
2245     extra_objcflags
2246     host_cppflags
2247 "
2248
2249 # code dependency declarations
2250
2251 # architecture extensions
2252
2253 armv5te_deps="arm"
2254 armv6_deps="arm"
2255 armv6t2_deps="arm"
2256 armv8_deps="aarch64"
2257 neon_deps_any="aarch64 arm"
2258 intrinsics_neon_deps="neon"
2259 vfp_deps_any="aarch64 arm"
2260 vfpv3_deps="vfp"
2261 setend_deps="arm"
2262
2263 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2264
2265 loongson2_deps="mips"
2266 loongson3_deps="mips"
2267 mipsfpu_deps="mips"
2268 mipsdsp_deps="mips"
2269 mipsdspr2_deps="mips"
2270 mips32r2_deps="mips"
2271 mips32r5_deps="mips"
2272 mips32r6_deps="mips"
2273 mips64r2_deps="mips"
2274 mips64r6_deps="mips"
2275 msa_deps="mipsfpu"
2276 mmi_deps="mips"
2277
2278 altivec_deps="ppc"
2279 dcbzl_deps="ppc"
2280 ldbrx_deps="ppc"
2281 ppc4xx_deps="ppc"
2282 vsx_deps="altivec"
2283 power8_deps="vsx"
2284
2285 cpunop_deps="i686"
2286 x86_64_select="i686"
2287 x86_64_suggest="fast_cmov"
2288
2289 amd3dnow_deps="mmx"
2290 amd3dnowext_deps="amd3dnow"
2291 i686_deps="x86"
2292 mmx_deps="x86"
2293 mmxext_deps="mmx"
2294 sse_deps="mmxext"
2295 sse2_deps="sse"
2296 sse3_deps="sse2"
2297 ssse3_deps="sse3"
2298 sse4_deps="ssse3"
2299 sse42_deps="sse4"
2300 aesni_deps="sse42"
2301 avx_deps="sse42"
2302 xop_deps="avx"
2303 fma3_deps="avx"
2304 fma4_deps="avx"
2305 avx2_deps="avx"
2306
2307 mmx_external_deps="yasm"
2308 mmx_inline_deps="inline_asm"
2309 mmx_suggest="mmx_external mmx_inline"
2310
2311 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2312     eval dep=\$${ext}_deps
2313     eval ${ext}_external_deps='"${dep}_external"'
2314     eval ${ext}_inline_deps='"${dep}_inline"'
2315     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2316 done
2317
2318 aligned_stack_if_any="aarch64 ppc x86"
2319 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2320 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2321 fast_unaligned_if_any="aarch64 ppc x86"
2322 simd_align_16_if_any="altivec neon sse"
2323 simd_align_32_if_any="avx"
2324
2325 # system capabilities
2326 symver_if_any="symver_asm_label symver_gnu_asm"
2327 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
2328
2329 # threading support
2330 atomics_gcc_if="sync_val_compare_and_swap"
2331 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2332 atomics_win32_if="MemoryBarrier"
2333 atomics_native_if_any="$ATOMICS_LIST"
2334 w32threads_deps="atomics_native"
2335 threads_if_any="$THREADS_LIST"
2336
2337 # subsystems
2338 dct_select="rdft"
2339 dirac_parse_select="golomb"
2340 error_resilience_select="me_cmp"
2341 faandct_deps="faan fdctdsp"
2342 faanidct_deps="faan idctdsp"
2343 h264dsp_select="startcode"
2344 frame_thread_encoder_deps="encoders threads"
2345 intrax8_select="blockdsp idctdsp"
2346 mdct_select="fft"
2347 mdct15_select="fft"
2348 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2349 mpeg_er_select="error_resilience"
2350 mpegaudio_select="mpegaudiodsp"
2351 mpegaudiodsp_select="dct"
2352 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2353 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2354 vc1dsp_select="h264chroma qpeldsp startcode"
2355 rdft_select="fft"
2356
2357 # decoders / encoders
2358 aac_decoder_select="mdct15 mdct sinewin"
2359 aac_fixed_decoder_select="mdct sinewin"
2360 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2361 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2362 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2363 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2364 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2365 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2366 adpcm_g722_decoder_select="g722dsp"
2367 adpcm_g722_encoder_select="g722dsp"
2368 aic_decoder_select="golomb idctdsp"
2369 alac_encoder_select="lpc"
2370 als_decoder_select="bswapdsp"
2371 amrnb_decoder_select="lsp"
2372 amrwb_decoder_select="lsp"
2373 amv_decoder_select="sp5x_decoder exif"
2374 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2375 ape_decoder_select="bswapdsp llauddsp"
2376 apng_decoder_select="zlib"
2377 apng_encoder_select="llvidencdsp zlib"
2378 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2379 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2380 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2381 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2382 atrac1_decoder_select="mdct sinewin"
2383 atrac3_decoder_select="mdct"
2384 atrac3p_decoder_select="mdct sinewin"
2385 avrn_decoder_select="exif jpegtables"
2386 bink_decoder_select="blockdsp hpeldsp"
2387 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2388 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2389 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2390 cllc_decoder_select="bswapdsp"
2391 comfortnoise_encoder_select="lpc"
2392 cook_decoder_select="audiodsp mdct sinewin"
2393 cscd_decoder_select="lzo"
2394 cscd_decoder_suggest="zlib"
2395 dca_decoder_select="mdct"
2396 dds_decoder_select="texturedsp"
2397 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2398 dnxhd_decoder_select="blockdsp idctdsp"
2399 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2400 dvvideo_decoder_select="dvprofile idctdsp"
2401 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2402 dxa_decoder_select="zlib"
2403 dxv_decoder_select="lzf texturedsp"
2404 eac3_decoder_select="ac3_decoder"
2405 eac3_encoder_select="ac3_encoder"
2406 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2407 eatgq_decoder_select="aandcttables"
2408 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2409 exr_decoder_select="zlib"
2410 ffv1_decoder_select="golomb rangecoder"
2411 ffv1_encoder_select="rangecoder"
2412 ffvhuff_decoder_select="huffyuv_decoder"
2413 ffvhuff_encoder_select="huffyuv_encoder"
2414 fic_decoder_select="golomb"
2415 flac_decoder_select="flacdsp golomb"
2416 flac_encoder_select="bswapdsp flacdsp golomb lpc"
2417 flashsv2_decoder_select="zlib"
2418 flashsv2_encoder_select="zlib"
2419 flashsv_decoder_select="zlib"
2420 flashsv_encoder_select="zlib"
2421 flv_decoder_select="h263_decoder"
2422 flv_encoder_select="h263_encoder"
2423 fourxm_decoder_select="blockdsp bswapdsp"
2424 fraps_decoder_select="bswapdsp huffman"
2425 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2426 g729_decoder_select="audiodsp"
2427 h261_decoder_select="mpegvideo"
2428 h261_encoder_select="aandcttables mpegvideoenc"
2429 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2430 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2431 h263i_decoder_select="h263_decoder"
2432 h263p_decoder_select="h263_decoder"
2433 h263p_encoder_select="h263_encoder"
2434 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2435 h264_decoder_suggest="error_resilience"
2436 hap_decoder_select="snappy texturedsp"
2437 hap_encoder_deps="libsnappy"
2438 hap_encoder_select="texturedspenc"
2439 hevc_decoder_select="bswapdsp cabac golomb videodsp"
2440 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2441 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2442 iac_decoder_select="imc_decoder"
2443 imc_decoder_select="bswapdsp fft mdct sinewin"
2444 indeo3_decoder_select="hpeldsp"
2445 indeo4_decoder_select="ividsp"
2446 indeo5_decoder_select="ividsp"
2447 interplay_video_decoder_select="hpeldsp"
2448 jpegls_decoder_select="golomb mjpeg_decoder"
2449 jpegls_encoder_select="golomb"
2450 jv_decoder_select="blockdsp"
2451 lagarith_decoder_select="llviddsp"
2452 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2453 loco_decoder_select="golomb"
2454 magicyuv_decoder_select="llviddsp"
2455 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2456 metasound_decoder_select="lsp mdct sinewin"
2457 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2458 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2459 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2460 mjpegb_decoder_select="mjpeg_decoder"
2461 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2462 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2463 mlp_decoder_select="mlp_parser"
2464 motionpixels_decoder_select="bswapdsp"
2465 mp1_decoder_select="mpegaudio"
2466 mp1float_decoder_select="mpegaudio"
2467 mp2_decoder_select="mpegaudio"
2468 mp2float_decoder_select="mpegaudio"
2469 mp3_decoder_select="mpegaudio"
2470 mp3adu_decoder_select="mpegaudio"
2471 mp3adufloat_decoder_select="mpegaudio"
2472 mp3float_decoder_select="mpegaudio"
2473 mp3on4_decoder_select="mpegaudio"
2474 mp3on4float_decoder_select="mpegaudio"
2475 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2476 mpc8_decoder_select="mpegaudiodsp"
2477 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2478 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2479 mpegvideo_decoder_select="mpegvideo"
2480 mpeg1video_decoder_select="mpegvideo"
2481 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2482 mpeg2video_decoder_select="mpegvideo"
2483 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2484 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2485 mpeg4_encoder_select="h263_encoder"
2486 msa1_decoder_select="mss34dsp"
2487 msmpeg4v1_decoder_select="h263_decoder"
2488 msmpeg4v2_decoder_select="h263_decoder"
2489 msmpeg4v2_encoder_select="h263_encoder"
2490 msmpeg4v3_decoder_select="h263_decoder"
2491 msmpeg4v3_encoder_select="h263_encoder"
2492 mss2_decoder_select="vc1_decoder mpegvideo"
2493 mts2_decoder_select="mss34dsp"
2494 mxpeg_decoder_select="mjpeg_decoder"
2495 nellymoser_decoder_select="mdct sinewin"
2496 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2497 nuv_decoder_select="idctdsp lzo"
2498 on2avc_decoder_select="mdct"
2499 opus_decoder_deps="swresample"
2500 opus_decoder_select="mdct15"
2501 opus_encoder_select="audio_frame_queue mdct15"
2502 png_decoder_select="zlib"
2503 png_encoder_select="llvidencdsp zlib"
2504 prores_decoder_select="blockdsp idctdsp"
2505 prores_encoder_select="fdctdsp"
2506 qcelp_decoder_select="lsp"
2507 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2508 ra_144_decoder_select="audiodsp"
2509 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2510 ralf_decoder_select="golomb"
2511 rawvideo_decoder_select="bswapdsp"
2512 rscc_decoder_select="zlib"
2513 rtjpeg_decoder_select="me_cmp"
2514 rv10_decoder_select="h263_decoder"
2515 rv10_encoder_select="h263_encoder"
2516 rv20_decoder_select="h263_decoder"
2517 rv20_encoder_select="h263_encoder"
2518 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2519 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2520 screenpresso_decoder_select="zlib"
2521 shorten_decoder_select="golomb bswapdsp"
2522 sipr_decoder_select="lsp"
2523 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2524 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2525 sonic_decoder_select="golomb rangecoder"
2526 sonic_encoder_select="golomb rangecoder"
2527 sonic_ls_encoder_select="golomb rangecoder"
2528 sp5x_decoder_select="mjpeg_decoder"
2529 svq1_decoder_select="hpeldsp"
2530 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2531 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2532 svq3_decoder_suggest="zlib"
2533 tak_decoder_select="audiodsp"
2534 tdsc_decoder_select="zlib mjpeg_decoder"
2535 theora_decoder_select="vp3_decoder"
2536 thp_decoder_select="mjpeg_decoder"
2537 tiff_decoder_suggest="zlib lzma"
2538 tiff_encoder_suggest="zlib"
2539 truehd_decoder_select="mlp_parser"
2540 truemotion2_decoder_select="bswapdsp"
2541 truespeech_decoder_select="bswapdsp"
2542 tscc_decoder_select="zlib"
2543 twinvq_decoder_select="mdct lsp sinewin"
2544 txd_decoder_select="texturedsp"
2545 utvideo_decoder_select="bswapdsp llviddsp"
2546 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2547 vble_decoder_select="llviddsp"
2548 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2549 vc1_qsv_decoder_deps="libmfx"
2550 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel"
2551 vc1image_decoder_select="vc1_decoder"
2552 vorbis_decoder_select="mdct"
2553 vorbis_encoder_select="mdct"
2554 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2555 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2556 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2557 vp6a_decoder_select="vp6_decoder"
2558 vp6f_decoder_select="vp6_decoder"
2559 vp7_decoder_select="h264pred videodsp vp8dsp"
2560 vp8_decoder_select="h264pred videodsp vp8dsp"
2561 vp9_decoder_select="videodsp vp9_parser"
2562 webp_decoder_select="vp8_decoder exif"
2563 wmalossless_decoder_select="llauddsp"
2564 wmapro_decoder_select="mdct sinewin wma_freqs"
2565 wmav1_decoder_select="mdct sinewin wma_freqs"
2566 wmav1_encoder_select="mdct sinewin wma_freqs"
2567 wmav2_decoder_select="mdct sinewin wma_freqs"
2568 wmav2_encoder_select="mdct sinewin wma_freqs"
2569 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2570 wmv1_decoder_select="h263_decoder"
2571 wmv1_encoder_select="h263_encoder"
2572 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2573 wmv2_encoder_select="h263_encoder wmv2dsp"
2574 wmv3_decoder_select="vc1_decoder"
2575 wmv3image_decoder_select="wmv3_decoder"
2576 xma1_decoder_select="wmapro_decoder"
2577 xma2_decoder_select="wmapro_decoder"
2578 zerocodec_decoder_select="zlib"
2579 zlib_decoder_select="zlib"
2580 zlib_encoder_select="zlib"
2581 zmbv_decoder_select="zlib"
2582 zmbv_encoder_select="zlib"
2583
2584 # platform codecs
2585 audiotoolbox_deps="AudioToolbox_AudioToolbox_h"
2586 audiotoolbox_extralibs="-framework CoreFoundation -framework AudioToolbox -framework CoreMedia"
2587
2588 # hardware accelerators
2589 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2590 cuda_deps_any="dlopen LoadLibrary"
2591 cuvid_deps="cuda"
2592 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2593 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2594 dxva2_extralibs="-luser32"
2595 vaapi_deps="va_va_h"
2596 vda_framework_deps="VideoDecodeAcceleration_VDADecoder_h"
2597 vda_framework_extralibs="-framework VideoDecodeAcceleration"
2598 vda_deps="vda_framework pthreads"
2599 vda_extralibs="-framework CoreFoundation -framework QuartzCore"
2600 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2601 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2602 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2603 xvmc_deps="X11_extensions_XvMClib_h"
2604
2605 h263_vaapi_hwaccel_deps="vaapi"
2606 h263_vaapi_hwaccel_select="h263_decoder"
2607 h263_videotoolbox_hwaccel_deps="videotoolbox"
2608 h263_videotoolbox_hwaccel_select="h263_decoder"
2609 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2610 h264_cuvid_hwaccel_deps="cuda cuvid"
2611 h264_cuvid_hwaccel_select="h264_cuvid_decoder"
2612 h264_d3d11va_hwaccel_deps="d3d11va"
2613 h264_d3d11va_hwaccel_select="h264_decoder"
2614 h264_dxva2_hwaccel_deps="dxva2"
2615 h264_dxva2_hwaccel_select="h264_decoder"
2616 h264_mediacodec_decoder_deps="mediacodec"
2617 h264_mediacodec_hwaccel_deps="mediacodec"
2618 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2619 h264_mmal_decoder_deps="mmal"
2620 h264_mmal_decoder_select="mmal"
2621 h264_mmal_hwaccel_deps="mmal"
2622 h264_omx_encoder_deps="omx"
2623 h264_qsv_hwaccel_deps="libmfx"
2624 h264_vaapi_hwaccel_deps="vaapi"
2625 h264_vaapi_hwaccel_select="h264_decoder"
2626 h264_vda_decoder_deps="vda"
2627 h264_vda_decoder_select="h264_decoder"
2628 h264_vda_hwaccel_deps="vda"
2629 h264_vda_hwaccel_select="h264_decoder"
2630 h264_vda_old_hwaccel_deps="vda"
2631 h264_vda_old_hwaccel_select="h264_decoder"
2632 h264_vdpau_decoder_deps="vdpau"
2633 h264_vdpau_decoder_select="h264_decoder"
2634 h264_vdpau_hwaccel_deps="vdpau"
2635 h264_vdpau_hwaccel_select="h264_decoder"
2636 h264_videotoolbox_hwaccel_deps="videotoolbox"
2637 h264_videotoolbox_hwaccel_select="h264_decoder"
2638 hevc_cuvid_hwaccel_deps="cuda cuvid"
2639 hevc_cuvid_hwaccel_select="hevc_cuvid_decoder"
2640 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2641 hevc_d3d11va_hwaccel_select="hevc_decoder"
2642 hevc_mediacodec_decoder_deps="mediacodec"
2643 hevc_mediacodec_hwaccel_deps="mediacodec"
2644 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2645 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2646 hevc_dxva2_hwaccel_select="hevc_decoder"
2647 hevc_qsv_hwaccel_deps="libmfx"
2648 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2649 hevc_vaapi_hwaccel_select="hevc_decoder"
2650 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2651 hevc_vdpau_hwaccel_select="hevc_decoder"
2652 mjpeg_cuvid_hwaccel_deps="cuda cuvid"
2653 mjpeg_cuvid_hwaccel_select="mjpeg_cuvid_decoder"
2654 mpeg_vdpau_decoder_deps="vdpau"
2655 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2656 mpeg_xvmc_hwaccel_deps="xvmc"
2657 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2658 mpeg1_cuvid_hwaccel_deps="cuda cuvid"
2659 mpeg1_cuvid_hwaccel_select="mpeg1_cuvid_decoder"
2660 mpeg1_vdpau_decoder_deps="vdpau"
2661 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2662 mpeg1_vdpau_hwaccel_deps="vdpau"
2663 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2664 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2665 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2666 mpeg1_xvmc_hwaccel_deps="xvmc"
2667 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2668 mpeg2_crystalhd_decoder_select="crystalhd"
2669 mpeg2_cuvid_hwaccel_deps="cuda cuvid"
2670 mpeg2_cuvid_hwaccel_select="mpeg2_cuvid_decoder"
2671 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2672 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2673 mpeg2_dxva2_hwaccel_deps="dxva2"
2674 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2675 mpeg2_mmal_decoder_deps="mmal"
2676 mpeg2_mmal_decoder_select="mmal"
2677 mpeg2_mmal_hwaccel_deps="mmal"
2678 mpeg2_qsv_hwaccel_deps="libmfx"
2679 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2680 mpeg2_vaapi_hwaccel_deps="vaapi"
2681 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2682 mpeg2_vdpau_hwaccel_deps="vdpau"
2683 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2684 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2685 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2686 mpeg2_xvmc_hwaccel_deps="xvmc"
2687 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2688 mpeg4_crystalhd_decoder_select="crystalhd"
2689 mpeg4_cuvid_hwaccel_deps="cuda cuvid"
2690 mpeg4_cuvid_hwaccel_select="mpeg4_cuvid_decoder"
2691 mpeg4_mediacodec_decoder_deps="mediacodec"
2692 mpeg4_mediacodec_hwaccel_deps="mediacodec"
2693 mpeg4_mmal_decoder_deps="mmal"
2694 mpeg4_mmal_decoder_select="mmal"
2695 mpeg4_mmal_hwaccel_deps="mmal"
2696 mpeg4_omx_encoder_deps="omx"
2697 mpeg4_vaapi_hwaccel_deps="vaapi"
2698 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2699 mpeg4_vdpau_decoder_deps="vdpau"
2700 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2701 mpeg4_vdpau_hwaccel_deps="vdpau"
2702 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2703 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2704 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2705 msmpeg4_crystalhd_decoder_select="crystalhd"
2706 vc1_crystalhd_decoder_select="crystalhd"
2707 vc1_cuvid_hwaccel_deps="cuda cuvid"
2708 vc1_cuvid_hwaccel_select="vc1_cuvid_decoder"
2709 vc1_d3d11va_hwaccel_deps="d3d11va"
2710 vc1_d3d11va_hwaccel_select="vc1_decoder"
2711 vc1_dxva2_hwaccel_deps="dxva2"
2712 vc1_dxva2_hwaccel_select="vc1_decoder"
2713 vc1_mmal_decoder_deps="mmal"
2714 vc1_mmal_decoder_select="mmal"
2715 vc1_mmal_hwaccel_deps="mmal"
2716 vc1_qsv_hwaccel_deps="libmfx"
2717 vc1_qsv_hwaccel_select="qsvdec_vc1"
2718 vc1_vaapi_hwaccel_deps="vaapi"
2719 vc1_vaapi_hwaccel_select="vc1_decoder"
2720 vc1_vdpau_decoder_deps="vdpau"
2721 vc1_vdpau_decoder_select="vc1_decoder"
2722 vc1_vdpau_hwaccel_deps="vdpau"
2723 vc1_vdpau_hwaccel_select="vc1_decoder"
2724 vp8_cuvid_hwaccel_deps="cuda cuvid"
2725 vp8_cuvid_hwaccel_select="vp8_cuvid_decoder"
2726 vp9_cuvid_hwaccel_deps="cuda cuvid"
2727 vp9_cuvid_hwaccel_select="vp9_cuvid_decoder"
2728 vp8_mediacodec_decoder_deps="mediacodec"
2729 vp8_mediacodec_hwaccel_deps="mediacodec"
2730 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2731 vp9_d3d11va_hwaccel_select="vp9_decoder"
2732 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2733 vp9_dxva2_hwaccel_select="vp9_decoder"
2734 vp9_mediacodec_decoder_deps="mediacodec"
2735 vp9_mediacodec_hwaccel_deps="mediacodec"
2736 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2737 vp9_vaapi_hwaccel_select="vp9_decoder"
2738 wmv3_crystalhd_decoder_select="crystalhd"
2739 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2740 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2741 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2742 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2743 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2744
2745 # hardware-accelerated codecs
2746 omx_deps="dlopen pthreads"
2747 omx_extralibs='$ldl'
2748 qsvdec_select="qsv"
2749 qsvenc_select="qsv"
2750 vaapi_encode_deps="vaapi"
2751
2752 hwupload_cuda_filter_deps="cuda"
2753 scale_npp_filter_deps="cuda libnpp"
2754
2755 nvenc_deps="cuda"
2756 nvenc_deps_any="dlopen LoadLibrary"
2757 nvenc_encoder_deps="nvenc"
2758 h264_cuvid_decoder_deps="cuda cuvid"
2759 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2760 h264_nvenc_encoder_deps="nvenc"
2761 h264_qsv_decoder_deps="libmfx"
2762 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2763 h264_qsv_encoder_deps="libmfx"
2764 h264_qsv_encoder_select="qsvenc"
2765 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2766 h264_vaapi_encoder_select="vaapi_encode golomb"
2767
2768 hevc_cuvid_decoder_deps="cuda cuvid"
2769 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2770 hevc_nvenc_encoder_deps="nvenc"
2771 hevc_qsv_decoder_deps="libmfx"
2772 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2773 hevc_qsv_encoder_deps="libmfx"
2774 hevc_qsv_encoder_select="qsvenc"
2775 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2776 hevc_vaapi_encoder_select="vaapi_encode golomb"
2777 mjpeg_cuvid_decoder_deps="cuda cuvid"
2778 mpeg1_cuvid_decoder_deps="cuda cuvid"
2779 mpeg2_cuvid_decoder_deps="cuda cuvid"
2780 mpeg2_qsv_decoder_deps="libmfx"
2781 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2782 mpeg2_qsv_encoder_deps="libmfx"
2783 mpeg2_qsv_encoder_select="qsvenc"
2784 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2785 mpeg2_vaapi_encoder_select="vaapi_encode"
2786 mpeg4_cuvid_decoder_deps="cuda cuvid"
2787 nvenc_h264_encoder_deps="nvenc"
2788 nvenc_hevc_encoder_deps="nvenc"
2789
2790 vc1_cuvid_decoder_deps="cuda cuvid"
2791 vp8_cuvid_decoder_deps="cuda cuvid"
2792 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2793 vp8_vaapi_encoder_select="vaapi_encode"
2794 vp9_cuvid_decoder_deps="cuda cuvid"
2795
2796 # parsers
2797 h264_parser_select="golomb h264dsp h264parse"
2798 hevc_parser_select="golomb"
2799 mpegvideo_parser_select="mpegvideo"
2800 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2801 vc1_parser_select="vc1dsp"
2802
2803 # bitstream_filters
2804 mjpeg2jpeg_bsf_select="jpegtables"
2805
2806 # external libraries
2807 aac_at_decoder_deps="audiotoolbox"
2808 ac3_at_decoder_deps="audiotoolbox"
2809 ac3_at_decoder_select="ac3_parser"
2810 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2811 alac_at_decoder_deps="audiotoolbox"
2812 amr_nb_at_decoder_deps="audiotoolbox"
2813 avisynth_deps_any="dlopen LoadLibrary"
2814 avisynth_demuxer_deps="avisynth"
2815 avisynth_demuxer_select="riffdec"
2816 eac3_at_decoder_deps="audiotoolbox"
2817 eac3_at_decoder_select="ac3_parser"
2818 gsm_ms_at_decoder_deps="audiotoolbox"
2819 ilbc_at_decoder_deps="audiotoolbox"
2820 mp1_at_decoder_deps="audiotoolbox"
2821 mp2_at_decoder_deps="audiotoolbox"
2822 mp3_at_decoder_deps="audiotoolbox"
2823 pcm_alaw_at_decoder_deps="audiotoolbox"
2824 pcm_mulaw_at_decoder_deps="audiotoolbox"
2825 qdmc_at_decoder_deps="audiotoolbox"
2826 qdm2_at_decoder_deps="audiotoolbox"
2827 aac_at_encoder_deps="audiotoolbox"
2828 aac_at_encoder_select="audio_frame_queue"
2829 alac_at_encoder_deps="audiotoolbox"
2830 alac_at_encoder_select="audio_frame_queue"
2831 ilbc_at_encoder_deps="audiotoolbox"
2832 ilbc_at_encoder_select="audio_frame_queue"
2833 pcm_alaw_at_encoder_deps="audiotoolbox"
2834 pcm_alaw_at_encoder_select="audio_frame_queue"
2835 pcm_mulaw_at_encoder_deps="audiotoolbox"
2836 pcm_mulaw_at_encoder_select="audio_frame_queue"
2837 chromaprint_muxer_deps="chromaprint"
2838 h264_videotoolbox_encoder_deps="videotoolbox_encoder pthreads"
2839 libcelt_decoder_deps="libcelt"
2840 libfdk_aac_decoder_deps="libfdk_aac"
2841 libfdk_aac_encoder_deps="libfdk_aac"
2842 libfdk_aac_encoder_select="audio_frame_queue"
2843 libgme_demuxer_deps="libgme"
2844 libgsm_decoder_deps="libgsm"
2845 libgsm_encoder_deps="libgsm"
2846 libgsm_ms_decoder_deps="libgsm"
2847 libgsm_ms_encoder_deps="libgsm"
2848 libilbc_decoder_deps="libilbc"
2849 libilbc_encoder_deps="libilbc"
2850 libkvazaar_encoder_deps="libkvazaar"
2851 libmodplug_demuxer_deps="libmodplug"
2852 libmp3lame_encoder_deps="libmp3lame"
2853 libmp3lame_encoder_select="audio_frame_queue"
2854 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2855 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2856 libopencore_amrnb_encoder_select="audio_frame_queue"
2857 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2858 libopenh264_decoder_deps="libopenh264"
2859 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2860 libopenh264_encoder_deps="libopenh264"
2861 libopenjpeg_decoder_deps="libopenjpeg"
2862 libopenjpeg_encoder_deps="libopenjpeg"
2863 libopenmpt_demuxer_deps="libopenmpt"
2864 libopus_decoder_deps="libopus"
2865 libopus_encoder_deps="libopus"
2866 libopus_encoder_select="audio_frame_queue"
2867 libschroedinger_decoder_deps="libschroedinger"
2868 libschroedinger_encoder_deps="libschroedinger"
2869 libshine_encoder_deps="libshine"
2870 libshine_encoder_select="audio_frame_queue"
2871 libspeex_decoder_deps="libspeex"
2872 libspeex_encoder_deps="libspeex"
2873 libspeex_encoder_select="audio_frame_queue"
2874 libtheora_encoder_deps="libtheora"
2875 libtwolame_encoder_deps="libtwolame"
2876 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2877 libvorbis_decoder_deps="libvorbis"
2878 libvorbis_encoder_deps="libvorbis"
2879 libvorbis_encoder_select="audio_frame_queue"
2880 libvpx_vp8_decoder_deps="libvpx"
2881 libvpx_vp8_encoder_deps="libvpx"
2882 libvpx_vp9_decoder_deps="libvpx"
2883 libvpx_vp9_encoder_deps="libvpx"
2884 libwavpack_encoder_deps="libwavpack"
2885 libwebp_encoder_deps="libwebp"
2886 libwebp_anim_encoder_deps="libwebp"
2887 libx262_encoder_deps="libx262"
2888 libx264_encoder_deps="libx264"
2889 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2890 libx264rgb_encoder_select="libx264_encoder"
2891 libx265_encoder_deps="libx265"
2892 libxavs_encoder_deps="libxavs"
2893 libxvid_encoder_deps="libxvid"
2894 libzvbi_teletext_decoder_deps="libzvbi"
2895 videotoolbox_deps="VideoToolbox_VideoToolbox_h"
2896 videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework CoreVideo"
2897 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2898 videotoolbox_encoder_suggest="vda_framework vt_bt2020"
2899 vt_bt2020_deps="kCVImageBufferColorPrimaries_ITU_R_2020"
2900
2901 # demuxers / muxers
2902 ac3_demuxer_select="ac3_parser"
2903 aiff_muxer_select="iso_media"
2904 asf_demuxer_select="riffdec"
2905 asf_o_demuxer_select="riffdec"
2906 asf_muxer_select="riffenc"
2907 asf_stream_muxer_select="asf_muxer"
2908 avi_demuxer_select="iso_media riffdec exif"
2909 avi_muxer_select="riffenc"
2910 caf_demuxer_select="iso_media riffdec"
2911 caf_muxer_select="iso_media"
2912 dash_muxer_select="mp4_muxer"
2913 dirac_demuxer_select="dirac_parser"
2914 dts_demuxer_select="dca_parser"
2915 dtshd_demuxer_select="dca_parser"
2916 dv_demuxer_select="dvprofile"
2917 dv_muxer_select="dvprofile"
2918 dxa_demuxer_select="riffdec"
2919 eac3_demuxer_select="ac3_parser"
2920 f4v_muxer_select="mov_muxer"
2921 fifo_muxer_deps="threads"
2922 flac_demuxer_select="flac_parser"
2923 hds_muxer_select="flv_muxer"
2924 hls_muxer_select="mpegts_muxer"
2925 image2_alias_pix_demuxer_select="image2_demuxer"
2926 image2_brender_pix_demuxer_select="image2_demuxer"
2927 ipod_muxer_select="mov_muxer"
2928 ismv_muxer_select="mov_muxer"
2929 libnut_demuxer_deps="libnut"
2930 libnut_muxer_deps="libnut"
2931 matroska_audio_muxer_select="matroska_muxer"
2932 matroska_demuxer_select="iso_media riffdec"
2933 matroska_demuxer_suggest="bzlib lzo zlib"
2934 matroska_muxer_select="iso_media riffenc"
2935 mmf_muxer_select="riffenc"
2936 mov_demuxer_select="iso_media riffdec"
2937 mov_demuxer_suggest="zlib"
2938 mov_muxer_select="iso_media riffenc rtpenc_chain"
2939 mp3_demuxer_select="mpegaudio_parser"
2940 mp4_muxer_select="mov_muxer"
2941 mpegts_demuxer_select="iso_media"
2942 mpegts_muxer_select="adts_muxer latm_muxer"
2943 mpegtsraw_demuxer_select="mpegts_demuxer"
2944 mxf_d10_muxer_select="mxf_muxer"
2945 mxf_opatom_muxer_select="mxf_muxer"
2946 nut_muxer_select="riffenc"
2947 nuv_demuxer_select="riffdec"
2948 oga_muxer_select="ogg_muxer"
2949 ogg_demuxer_select="dirac_parse"
2950 ogv_muxer_select="ogg_muxer"
2951 opus_muxer_select="ogg_muxer"
2952 psp_muxer_select="mov_muxer"
2953 rtp_demuxer_select="sdp_demuxer"
2954 rtp_muxer_select="golomb"
2955 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2956 rtsp_demuxer_select="http_protocol rtpdec"
2957 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2958 sap_demuxer_select="sdp_demuxer"
2959 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2960 sdp_demuxer_select="rtpdec"
2961 smoothstreaming_muxer_select="ismv_muxer"
2962 spdif_muxer_select="aac_parser"
2963 spx_muxer_select="ogg_muxer"
2964 swf_demuxer_suggest="zlib"
2965 tak_demuxer_select="tak_parser"
2966 tg2_muxer_select="mov_muxer"
2967 tgp_muxer_select="mov_muxer"
2968 vobsub_demuxer_select="mpegps_demuxer"
2969 w64_demuxer_select="wav_demuxer"
2970 w64_muxer_select="wav_muxer"
2971 wav_demuxer_select="riffdec"
2972 wav_muxer_select="riffenc"
2973 webm_muxer_select="iso_media riffenc"
2974 webm_dash_manifest_demuxer_select="matroska_demuxer"
2975 wtv_demuxer_select="mpegts_demuxer riffdec"
2976 wtv_muxer_select="mpegts_muxer riffenc"
2977 xmv_demuxer_select="riffdec"
2978 xwma_demuxer_select="riffdec"
2979
2980 # indevs / outdevs
2981 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2982 alsa_outdev_deps="alsa_asoundlib_h"
2983 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2984 avfoundation_indev_select="avfoundation"
2985 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2986 caca_outdev_deps="libcaca"
2987 decklink_indev_deps="decklink pthreads"
2988 decklink_indev_extralibs="-lstdc++"
2989 decklink_outdev_deps="decklink pthreads"
2990 decklink_outdev_extralibs="-lstdc++"
2991 dshow_indev_deps="IBaseFilter"
2992 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
2993 dv1394_indev_deps="dv1394"
2994 dv1394_indev_select="dv_demuxer"
2995 fbdev_indev_deps="linux_fb_h"
2996 fbdev_outdev_deps="linux_fb_h"
2997 gdigrab_indev_deps="CreateDIBSection"
2998 gdigrab_indev_extralibs="-lgdi32"
2999 gdigrab_indev_select="bmp_decoder"
3000 iec61883_indev_deps="libiec61883"
3001 jack_indev_deps="jack_jack_h"
3002 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3003 lavfi_indev_deps="avfilter"
3004 libcdio_indev_deps="libcdio"
3005 libdc1394_indev_deps="libdc1394"
3006 libv4l2_indev_deps="libv4l2"
3007 openal_indev_deps="openal"
3008 opengl_outdev_deps="opengl"
3009 oss_indev_deps_any="soundcard_h sys_soundcard_h"
3010 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
3011 pulse_indev_deps="libpulse"
3012 pulse_outdev_deps="libpulse"
3013 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
3014 qtkit_indev_select="qtkit"
3015 sdl2_outdev_deps="sdl2"
3016 sndio_indev_deps="sndio_h"
3017 sndio_outdev_deps="sndio_h"
3018 v4l_indev_deps="linux_videodev_h"
3019 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3020 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3021 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
3022 vfwcap_indev_extralibs="-lavicap32"
3023 xcbgrab_indev_deps="libxcb"
3024 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3025 xv_outdev_extralibs="-lXv -lX11 -lXext"
3026
3027 # protocols
3028 async_protocol_deps="threads"
3029 bluray_protocol_deps="libbluray"
3030 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
3031 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3032 ffrtmpcrypt_protocol_select="tcp_protocol"
3033 ffrtmphttp_protocol_deps="!librtmp_protocol"
3034 ffrtmphttp_protocol_select="http_protocol"
3035 ftp_protocol_select="tcp_protocol"
3036 gopher_protocol_select="network"
3037 http_protocol_select="tcp_protocol"
3038 httpproxy_protocol_select="tcp_protocol"
3039 https_protocol_select="tls_protocol"
3040 icecast_protocol_select="http_protocol"
3041 librtmp_protocol_deps="librtmp"
3042 librtmpe_protocol_deps="librtmp"
3043 librtmps_protocol_deps="librtmp"
3044 librtmpt_protocol_deps="librtmp"
3045 librtmpte_protocol_deps="librtmp"
3046 libsmbclient_protocol_deps="libsmbclient gplv3"
3047 libssh_protocol_deps="libssh"
3048 mmsh_protocol_select="http_protocol"
3049 mmst_protocol_select="network"
3050 rtmp_protocol_deps="!librtmp_protocol"
3051 rtmp_protocol_select="tcp_protocol"
3052 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3053 rtmps_protocol_deps="!librtmp_protocol"
3054 rtmps_protocol_select="tls_protocol"
3055 rtmpt_protocol_select="ffrtmphttp_protocol"
3056 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3057 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3058 rtp_protocol_select="udp_protocol"
3059 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3060 sctp_protocol_select="network"
3061 srtp_protocol_select="rtp_protocol srtp"
3062 tcp_protocol_select="network"
3063 tls_gnutls_protocol_deps="gnutls !tls_schannel_protocol !tls_securetransport_protocol"
3064 tls_gnutls_protocol_select="tcp_protocol"
3065 tls_openssl_protocol_deps="openssl !tls_schannel_protocol !tls_securetransport_protocol !tls_gnutls_protocol"
3066 tls_openssl_protocol_select="tcp_protocol"
3067 tls_schannel_protocol_deps="schannel"
3068 tls_schannel_protocol_select="tcp_protocol"
3069 tls_securetransport_protocol_deps="securetransport"
3070 tls_securetransport_protocol_select="tcp_protocol"
3071 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
3072 udp_protocol_select="network"
3073 udplite_protocol_select="network"
3074 unix_protocol_deps="sys_un_h"
3075 unix_protocol_select="network"
3076
3077 # filters
3078 afftfilt_filter_deps="avcodec"
3079 afftfilt_filter_select="fft"
3080 amovie_filter_deps="avcodec avformat"
3081 aresample_filter_deps="swresample"
3082 ass_filter_deps="libass"
3083 atempo_filter_deps="avcodec"
3084 atempo_filter_select="rdft"
3085 azmq_filter_deps="libzmq"
3086 blackframe_filter_deps="gpl"
3087 boxblur_filter_deps="gpl"
3088 bs2b_filter_deps="libbs2b"
3089 colormatrix_filter_deps="gpl"
3090 cover_rect_filter_deps="avcodec avformat gpl"
3091 cropdetect_filter_deps="gpl"
3092 deinterlace_qsv_filter_deps="libmfx"
3093 deinterlace_vaapi_filter_deps="vaapi"
3094 delogo_filter_deps="gpl"
3095 deshake_filter_select="pixelutils"
3096 drawtext_filter_deps="libfreetype"
3097 eq_filter_deps="gpl"
3098 fftfilt_filter_deps="avcodec"
3099 fftfilt_filter_select="rdft"
3100 find_rect_filter_deps="avcodec avformat gpl"
3101 firequalizer_filter_deps="avcodec"
3102 firequalizer_filter_select="rdft"
3103 flite_filter_deps="libflite"
3104 framerate_filter_select="pixelutils"
3105 frei0r_filter_deps="frei0r dlopen"
3106 frei0r_src_filter_deps="frei0r dlopen"
3107 fspp_filter_deps="gpl"
3108 geq_filter_deps="gpl"
3109 histeq_filter_deps="gpl"
3110 hqdn3d_filter_deps="gpl"
3111 interlace_filter_deps="gpl"
3112 kerndeint_filter_deps="gpl"
3113 ladspa_filter_deps="ladspa dlopen"
3114 mcdeint_filter_deps="avcodec gpl"
3115 movie_filter_deps="avcodec avformat"
3116 mpdecimate_filter_deps="gpl"
3117 mpdecimate_filter_select="pixelutils"
3118 mptestsrc_filter_deps="gpl"
3119 negate_filter_deps="lut_filter"
3120 nnedi_filter_deps="gpl"
3121 ocr_filter_deps="libtesseract"
3122 ocv_filter_deps="libopencv"
3123 owdenoise_filter_deps="gpl"
3124 pan_filter_deps="swresample"
3125 perspective_filter_deps="gpl"
3126 phase_filter_deps="gpl"
3127 pp7_filter_deps="gpl"
3128 pp_filter_deps="gpl postproc"
3129 pullup_filter_deps="gpl"
3130 removelogo_filter_deps="avcodec avformat swscale"
3131 repeatfields_filter_deps="gpl"
3132 resample_filter_deps="avresample"
3133 rubberband_filter_deps="librubberband"
3134 sab_filter_deps="gpl swscale"
3135 scale2ref_filter_deps="swscale"
3136 scale_filter_deps="swscale"
3137 scale_qsv_filter_deps="libmfx"
3138 select_filter_select="pixelutils"
3139 showcqt_filter_deps="avcodec avformat swscale"
3140 showcqt_filter_select="fft"
3141 showfreqs_filter_deps="avcodec"
3142 showfreqs_filter_select="fft"
3143 showspectrum_filter_deps="avcodec"
3144 showspectrum_filter_select="fft"
3145 showspectrumpic_filter_deps="avcodec"
3146 showspectrumpic_filter_select="fft"
3147 signature_filter_deps="gpl avcodec avformat"
3148 smartblur_filter_deps="gpl swscale"
3149 sofalizer_filter_deps="netcdf avcodec"
3150 sofalizer_filter_select="fft"
3151 spectrumsynth_filter_deps="avcodec"
3152 spectrumsynth_filter_select="fft"
3153 spp_filter_deps="gpl avcodec"
3154 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3155 stereo3d_filter_deps="gpl"
3156 subtitles_filter_deps="avformat avcodec libass"
3157 super2xsai_filter_deps="gpl"
3158 pixfmts_super2xsai_test_deps="super2xsai_filter"
3159 tinterlace_filter_deps="gpl"
3160 tinterlace_merge_test_deps="tinterlace_filter"
3161 tinterlace_pad_test_deps="tinterlace_filter"
3162 uspp_filter_deps="gpl avcodec"
3163 vaguedenoiser_filter_deps="gpl"
3164 vidstabdetect_filter_deps="libvidstab"
3165 vidstabtransform_filter_deps="libvidstab"
3166 zmq_filter_deps="libzmq"
3167 zoompan_filter_deps="swscale"
3168 zscale_filter_deps="libzimg"
3169 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3170
3171 # examples
3172 avio_dir_cmd_deps="avformat avutil"
3173 avio_reading_deps="avformat avcodec avutil"
3174 decode_audio_example_deps="avcodec avutil"
3175 decode_video_example_deps="avcodec avutil"
3176 demuxing_decoding_example_deps="avcodec avformat avutil"
3177 encode_audio_example_deps="avcodec avutil"
3178 encode_video_example_deps="avcodec avutil"
3179 extract_mvs_example_deps="avcodec avformat avutil"
3180 filter_audio_example_deps="avfilter avutil"
3181 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3182 filtering_video_example_deps="avfilter avcodec avformat avutil"
3183 http_multiclient_example_deps="avformat avutil fork"
3184 metadata_example_deps="avformat avutil"
3185 muxing_example_deps="avcodec avformat avutil swscale"
3186 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
3187 remuxing_example_deps="avcodec avformat avutil"
3188 resampling_audio_example_deps="avutil swresample"
3189 scaling_video_example_deps="avutil swscale"
3190 transcode_aac_example_deps="avcodec avformat swresample"
3191 transcoding_example_deps="avfilter avcodec avformat avutil"
3192
3193 # libraries, in linking order
3194 avcodec_deps="avutil"
3195 avdevice_deps="avformat avcodec avutil"
3196 avfilter_deps="avutil"
3197 avformat_deps="avcodec avutil"
3198 avresample_deps="avutil"
3199 postproc_deps="avutil gpl"
3200 swresample_deps="avutil"
3201 swscale_deps="avutil"
3202
3203 # programs
3204 ffmpeg_deps="avcodec avfilter avformat swresample"
3205 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3206                null_filter
3207                trim_filter"
3208 ffplay_deps="avcodec avformat swscale swresample sdl2"
3209 ffplay_libs='$sdl2_libs'
3210 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3211 ffprobe_deps="avcodec avformat"
3212 ffserver_deps="avformat fork sarestart"
3213 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3214
3215 # documentation
3216 podpages_deps="perl"
3217 manpages_deps="perl pod2man"
3218 htmlpages_deps="perl"
3219 htmlpages_deps_any="makeinfo_html texi2html"
3220 txtpages_deps="perl makeinfo"
3221 doc_deps_any="manpages htmlpages podpages txtpages"
3222
3223 # default parameters
3224
3225 logfile="config.log"
3226
3227 # installation paths
3228 prefix_default="/usr/local"
3229 bindir_default='${prefix}/bin'
3230 datadir_default='${prefix}/share/ffmpeg'
3231 docdir_default='${prefix}/share/doc/ffmpeg'
3232 incdir_default='${prefix}/include'
3233 libdir_default='${prefix}/lib'
3234 mandir_default='${prefix}/share/man'
3235
3236 # toolchain
3237 ar_default="ar"
3238 cc_default="gcc"
3239 cxx_default="g++"
3240 host_cc_default="gcc"
3241 cp_f="cp -f"
3242 doxygen_default="doxygen"
3243 install="install"
3244 ln_s_default="ln -s -f"
3245 nm_default="nm -g"
3246 objformat="elf"
3247 pkg_config_default=pkg-config
3248 ranlib_default="ranlib"
3249 strip_default="strip"
3250 version_script='--version-script'
3251 yasmexe_default="yasm"
3252 windres_default="windres"
3253
3254 # OS
3255 target_os_default=$(tolower $(uname -s))
3256 host_os=$target_os_default
3257
3258 # machine
3259 if test "$target_os_default" = aix; then
3260     arch_default=$(uname -p)
3261     strip_default="strip -X32_64"
3262 else
3263     arch_default=$(uname -m)
3264 fi
3265 cpu="generic"
3266 intrinsics="none"
3267
3268 # configurable options
3269 enable $PROGRAM_LIST
3270 enable $DOCUMENT_LIST
3271 enable $EXAMPLE_LIST
3272 enable $(filter_out avresample $LIBRARY_LIST)
3273 enable stripping
3274
3275 enable asm
3276 enable debug
3277 enable doc
3278 enable faan faandct faanidct
3279 enable optimizations
3280 enable runtime_cpudetect
3281 enable safe_bitstream_reader
3282 enable static
3283 enable swscale_alpha
3284 enable valgrind_backtrace
3285
3286 sws_max_filter_size_default=256
3287 set_default sws_max_filter_size
3288
3289 # build settings
3290 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3291 LIBPREF="lib"
3292 LIBSUF=".a"
3293 FULLNAME='$(NAME)$(BUILDSUF)'
3294 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3295 SLIBPREF="lib"
3296 SLIBSUF=".so"
3297 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3298 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3299 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3300 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3301 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3302 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3303 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3304
3305 asflags_filter=echo
3306 cflags_filter=echo
3307 ldflags_filter=echo
3308
3309 AS_C='-c'
3310 AS_O='-o $@'
3311 CC_C='-c'
3312 CC_E='-E -o $@'
3313 CC_O='-o $@'
3314 CXX_C='-c'
3315 CXX_O='-o $@'
3316 OBJCC_C='-c'
3317 OBJCC_E='-E -o $@'
3318 OBJCC_O='-o $@'
3319 LD_O='-o $@'
3320 LD_LIB='-l%'
3321 LD_PATH='-L'
3322 HOSTCC_C='-c'
3323 HOSTCC_E='-E -o $@'
3324 HOSTCC_O='-o $@'
3325 HOSTLD_O='-o $@'
3326
3327 host_libs='-lm'
3328 host_cflags_filter=echo
3329 host_ldflags_filter=echo
3330
3331 target_path='$(CURDIR)'
3332
3333 # since the object filename is not given with the -MM flag, the compiler
3334 # is only able to print the basename, and we must add the path ourselves
3335 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3336 DEPFLAGS='-MM'
3337
3338 # find source path
3339 if test -f configure; then
3340     source_path=.
3341 else
3342     source_path=$(cd $(dirname "$0"); pwd)
3343     case "$source_path" in
3344         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3345     esac
3346     test -e "$source_path/config.h" &&
3347         die "Out of tree builds are impossible with config.h in source dir."
3348 fi
3349
3350 for v in "$@"; do
3351     r=${v#*=}
3352     l=${v%"$r"}
3353     r=$(sh_quote "$r")
3354     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3355 done
3356
3357 find_things(){
3358     thing=$1
3359     pattern=$2
3360     file=$source_path/$3
3361     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3362 }
3363
3364 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3365 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3366 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3367 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3368 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3369 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3370 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3371 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3372 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3373
3374 find_things_extern(){
3375     thing=$1
3376     pattern=$2
3377     file=$source_path/$3
3378     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3379 }
3380
3381 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3382 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3383
3384 ALL_COMPONENTS="
3385     $BSF_LIST
3386     $DECODER_LIST
3387     $DEMUXER_LIST
3388     $ENCODER_LIST
3389     $FILTER_LIST
3390     $HWACCEL_LIST
3391     $INDEV_LIST
3392     $MUXER_LIST
3393     $OUTDEV_LIST
3394     $PARSER_LIST
3395     $PROTOCOL_LIST
3396 "
3397
3398 for n in $COMPONENT_LIST; do
3399     v=$(toupper ${n%s})_LIST
3400     eval enable \$$v
3401     eval ${n}_if_any="\$$v"
3402 done
3403
3404 enable $ARCH_EXT_LIST
3405
3406 die_unknown(){
3407     echo "Unknown option \"$1\"."
3408     echo "See $0 --help for available options."
3409     exit 1
3410 }
3411
3412 print_in_columns() {
3413     cols=$(expr $ncols / 24)
3414     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3415 }
3416
3417 show_list() {
3418     suffix=_$1
3419     shift
3420     echo $* | sed s/$suffix//g | print_in_columns
3421     exit 0
3422 }
3423
3424 rand_list(){
3425     IFS=', '
3426     set -- $*
3427     unset IFS
3428     for thing; do
3429         comp=${thing%:*}
3430         prob=${thing#$comp}
3431         prob=${prob#:}
3432         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3433         echo "prob ${prob:-0.5}"
3434         printf '%s\n' $comp
3435     done
3436 }
3437
3438 do_random(){
3439     action=$1
3440     shift
3441     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3442     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3443 }
3444
3445 for opt do
3446     optval="${opt#*=}"
3447     case "$opt" in
3448         --extra-ldflags=*)
3449             add_ldflags $optval
3450         ;;
3451         --extra-ldexeflags=*)
3452             add_ldexeflags $optval
3453         ;;
3454         --extra-ldlibflags=*)
3455             add_ldlibflags $optval
3456         ;;
3457         --extra-libs=*)
3458             add_extralibs $optval
3459         ;;
3460         --disable-devices)
3461             disable $INDEV_LIST $OUTDEV_LIST
3462         ;;
3463         --enable-debug=*)
3464             debuglevel="$optval"
3465         ;;
3466         --disable-programs)
3467             disable $PROGRAM_LIST
3468         ;;
3469         --disable-everything)
3470             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3471         ;;
3472         --disable-all)
3473             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3474             disable $LIBRARY_LIST $PROGRAM_LIST doc
3475             enable avutil
3476         ;;
3477         --enable-random|--disable-random)
3478             action=${opt%%-random}
3479             do_random ${action#--} $COMPONENT_LIST
3480         ;;
3481         --enable-random=*|--disable-random=*)
3482             action=${opt%%-random=*}
3483             do_random ${action#--} $optval
3484         ;;
3485         --enable-*=*|--disable-*=*)
3486             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3487             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3488             eval list=\$$(toupper $thing)_LIST
3489             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3490             list=$(filter "$name" $list)
3491             [ "$list" = "" ] && warn "Option $opt did not match anything"
3492             $action $list
3493         ;;
3494         --enable-?*|--disable-?*)
3495             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3496             if is_in $option $COMPONENT_LIST; then
3497                 test $action = disable && action=unset
3498                 eval $action \$$(toupper ${option%s})_LIST
3499             elif is_in $option $CMDLINE_SELECT; then
3500                 $action $option
3501             else
3502                 die_unknown $opt
3503             fi
3504         ;;
3505         --list-*)
3506             NAME="${opt#--list-}"
3507             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3508             NAME=${NAME%s}
3509             eval show_list $NAME \$$(toupper $NAME)_LIST
3510         ;;
3511         --help|-h) show_help
3512         ;;
3513         --quiet|-q) quiet=yes
3514         ;;
3515         --fatal-warnings) enable fatal_warnings
3516         ;;
3517         *)
3518             optname="${opt%%=*}"
3519             optname="${optname#--}"
3520             optname=$(echo "$optname" | sed 's/-/_/g')
3521             if is_in $optname $CMDLINE_SET; then
3522                 eval $optname='$optval'
3523             elif is_in $optname $CMDLINE_APPEND; then
3524                 append $optname "$optval"
3525             else
3526                 die_unknown $opt
3527             fi
3528         ;;
3529     esac
3530 done
3531
3532 for e in $env; do
3533     eval "export $e"
3534 done
3535
3536 # Mark specifically enabled, but normally autodetected libraries as requested.
3537 for lib in $AUTODETECT_LIBS; do
3538     enabled $lib && request $lib
3539 done
3540
3541 # Enable platform codecs by default.
3542 enable_weak audiotoolbox
3543
3544 # Enable hwaccels by default.
3545 enable_weak d3d11va dxva2 vaapi vda vdpau videotoolbox_hwaccel xvmc
3546 enable_weak xlib
3547
3548 enable_weak cuda cuvid nvenc vda_framework videotoolbox videotoolbox_encoder
3549
3550 disabled logging && logfile=/dev/null
3551
3552 # Disable all the library-specific components if the library itself
3553 # is disabled, see AVCODEC_LIST and following _LIST variables.
3554
3555 disable_components(){
3556     disabled ${1} && disable $(
3557         eval components="\$$(toupper ${1})_COMPONENTS"
3558         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3559     )
3560 }
3561
3562 map 'disable_components $v' $LIBRARY_LIST
3563
3564 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3565 set >> $logfile
3566
3567 test -n "$valgrind" && toolchain="valgrind-memcheck"
3568
3569 case "$toolchain" in
3570     *-asan)
3571         cc_default="${toolchain%-asan}"
3572         add_cflags  -fsanitize=address
3573         add_ldflags -fsanitize=address
3574     ;;
3575     *-msan)
3576         cc_default="${toolchain%-msan}"
3577         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3578         add_ldflags -fsanitize=memory
3579     ;;
3580     *-tsan)
3581         cc_default="${toolchain%-tsan}"
3582         add_cflags  -fsanitize=thread -fPIE
3583         add_ldflags -fsanitize=thread -pie
3584         case "$toolchain" in
3585             gcc-tsan)
3586                 add_cflags  -fPIC
3587                 add_ldflags -fPIC
3588                 ;;
3589         esac
3590     ;;
3591     *-usan)
3592         cc_default="${toolchain%-usan}"
3593         add_cflags  -fsanitize=undefined
3594         add_ldflags -fsanitize=undefined
3595     ;;
3596     valgrind-*)
3597         target_exec_default="valgrind"
3598         case "$toolchain" in
3599             valgrind-massif)
3600                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3601                 ;;
3602             valgrind-memcheck)
3603                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3604                 ;;
3605         esac
3606     ;;
3607     msvc)
3608         # Check whether the current MSVC version needs the C99 converter.
3609         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3610         # support enough of C99 to build ffmpeg. Default to the new
3611         # behaviour if the regexp was unable to match anything, since this
3612         # successfully parses the version number of existing supported
3613         # versions that require the converter (MSVC 2010 and 2012).
3614         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3615         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3616             cc_default="cl"
3617         else
3618             cc_default="c99wrap cl"
3619         fi
3620         ld_default="$source_path/compat/windows/mslink"
3621         nm_default="dumpbin -symbols"
3622         ar_default="lib"
3623         case "$arch" in
3624         arm*)
3625             as_default="armasm"
3626             ;;
3627         esac
3628         target_os_default="win32"
3629         # Use a relative path for TMPDIR. This makes sure all the
3630         # ffconf temp files are written with a relative path, avoiding
3631         # issues with msys/win32 path conversion for MSVC parameters
3632         # such as -Fo<file> or -out:<file>.
3633         TMPDIR=.
3634     ;;
3635     icl)
3636         cc_default="icl"
3637         ld_default="xilink"
3638         nm_default="dumpbin -symbols"
3639         ar_default="xilib"
3640         target_os_default="win32"
3641         TMPDIR=.
3642     ;;
3643     gcov)
3644         add_cflags  -fprofile-arcs -ftest-coverage
3645         add_ldflags -fprofile-arcs -ftest-coverage
3646     ;;
3647     llvm-cov)
3648         add_cflags -fprofile-arcs -ftest-coverage
3649         add_ldflags --coverage
3650     ;;
3651     hardened)
3652         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3653         add_cflags   -fno-strict-overflow -fstack-protector-all
3654         add_ldflags  -Wl,-z,relro -Wl,-z,now
3655         add_cflags   -fPIE
3656         add_ldexeflags -fPIE -pie
3657     ;;
3658     ?*)
3659         die "Unknown toolchain $toolchain"
3660     ;;
3661 esac
3662
3663 test -n "$cross_prefix" && enable cross_compile
3664
3665 if enabled cross_compile; then
3666     test -n "$arch" && test -n "$target_os" ||
3667         die "Must specify target arch and OS when cross-compiling"
3668 fi
3669
3670 ar_default="${cross_prefix}${ar_default}"
3671 cc_default="${cross_prefix}${cc_default}"
3672 cxx_default="${cross_prefix}${cxx_default}"
3673 nm_default="${cross_prefix}${nm_default}"
3674 pkg_config_default="${cross_prefix}${pkg_config_default}"
3675 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3676     ranlib_default="${cross_prefix}${ranlib_default} -D"
3677 else
3678     ranlib_default="${cross_prefix}${ranlib_default}"
3679 fi
3680 strip_default="${cross_prefix}${strip_default}"
3681 windres_default="${cross_prefix}${windres_default}"
3682
3683 sysinclude_default="${sysroot}/usr/include"
3684
3685 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3686     target_exec target_os yasmexe
3687 enabled cross_compile || host_cc_default=$cc
3688 set_default host_cc
3689
3690 pkg_config_fail_message=""
3691 if ! $pkg_config --version >/dev/null 2>&1; then
3692     warn "$pkg_config not found, library detection may fail."
3693     pkg_config=false
3694 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3695     pkg_config_fail_message="
3696 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3697 fi
3698
3699 if test $doxygen != $doxygen_default && \
3700   ! $doxygen --version >/dev/null 2>&1; then
3701     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3702 fi
3703
3704 exesuf() {
3705     case $1 in
3706         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3707     esac
3708 }
3709
3710 EXESUF=$(exesuf $target_os)
3711 HOSTEXESUF=$(exesuf $host_os)
3712
3713 # set temporary file name
3714 : ${TMPDIR:=$TEMPDIR}
3715 : ${TMPDIR:=$TMP}
3716 : ${TMPDIR:=/tmp}
3717
3718 if [ -n "$tempprefix" ] ; then
3719     mktemp(){
3720         echo $tempprefix.${HOSTNAME}.${UID}
3721     }
3722 elif ! check_cmd mktemp -u XXXXXX; then
3723     # simple replacement for missing mktemp
3724     # NOT SAFE FOR GENERAL USE
3725     mktemp(){
3726         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3727     }
3728 fi
3729
3730 tmpfile(){
3731     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3732         (set -C; exec > $tmp) 2>/dev/null ||
3733         die "Unable to create temporary file in $TMPDIR."
3734     append TMPFILES $tmp
3735     eval $1=$tmp
3736 }
3737
3738 trap 'rm -f -- $TMPFILES' EXIT
3739
3740 tmpfile TMPASM .asm
3741 tmpfile TMPC   .c
3742 tmpfile TMPCPP .cpp
3743 tmpfile TMPE   $EXESUF
3744 tmpfile TMPH   .h
3745 tmpfile TMPM   .m
3746 tmpfile TMPO   .o
3747 tmpfile TMPS   .S
3748 tmpfile TMPSH  .sh
3749 tmpfile TMPV   .ver
3750
3751 unset -f mktemp
3752
3753 chmod +x $TMPE
3754
3755 # make sure we can execute files in $TMPDIR
3756 cat > $TMPSH 2>> $logfile <<EOF
3757 #! /bin/sh
3758 EOF
3759 chmod +x $TMPSH >> $logfile 2>&1
3760 if ! $TMPSH >> $logfile 2>&1; then
3761     cat <<EOF
3762 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3763 variable to another directory and make sure that it is not mounted noexec.
3764 EOF
3765     die "Sanity test failed."
3766 fi
3767
3768 armasm_flags(){
3769     for flag; do
3770         case $flag in
3771             # Filter out MSVC cl.exe options from cflags that shouldn't
3772             # be passed to gas-preprocessor
3773             -M[TD]*)                                            ;;
3774             *)                  echo $flag                      ;;
3775         esac
3776    done
3777 }
3778
3779 ccc_flags(){
3780     for flag; do
3781         case $flag in
3782             -std=c99)           echo -c99                       ;;
3783             -mcpu=*)            echo -arch ${flag#*=}           ;;
3784             -mieee)             echo -ieee                      ;;
3785             -O*|-fast)          echo $flag                      ;;
3786             -fno-math-errno)    echo -assume nomath_errno       ;;
3787             -g)                 echo -g3                        ;;
3788             -Wall)              echo -msg_enable level2         ;;
3789             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3790             -Wl,*)              echo $flag                      ;;
3791             -f*|-W*)                                            ;;
3792             *)                  echo $flag                      ;;
3793         esac
3794    done
3795 }
3796
3797 cparser_flags(){
3798     for flag; do
3799         case $flag in
3800             -Wno-switch)             echo -Wno-switch-enum ;;
3801             -Wno-format-zero-length) ;;
3802             -Wdisabled-optimization) ;;
3803             -Wno-pointer-sign)       echo -Wno-other ;;
3804             *)                       echo $flag ;;
3805         esac
3806     done
3807 }
3808
3809 msvc_common_flags(){
3810     for flag; do
3811         case $flag in
3812             # In addition to specifying certain flags under the compiler
3813             # specific filters, they must be specified here as well or else the
3814             # generic catch all at the bottom will print the original flag.
3815             -Wall)                ;;
3816             -std=c99)             ;;
3817             # Common flags
3818             -fomit-frame-pointer) ;;
3819             -g)                   echo -Z7 ;;
3820             -fno-math-errno)      ;;
3821             -fno-common)          ;;
3822             -fno-signed-zeros)    ;;
3823             -fPIC)                ;;
3824             -mthumb)              ;;
3825             -march=*)             ;;
3826             -lz)                  echo zlib.lib ;;
3827             -lavifil32)           echo vfw32.lib ;;
3828             -lavicap32)           echo vfw32.lib user32.lib ;;
3829             -lx264)               echo libx264.lib ;;
3830             -l*)                  echo ${flag#-l}.lib ;;
3831             -LARGEADDRESSAWARE)   echo $flag ;;
3832             -L*)                  echo -libpath:${flag#-L} ;;
3833             *)                    echo $flag ;;
3834         esac
3835     done
3836 }
3837
3838 msvc_flags(){
3839     msvc_common_flags "$@"
3840     for flag; do
3841         case $flag in
3842             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3843                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3844                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3845                                        -wd4307 \
3846                                        -wd4273 -wd4554 -wd4701 ;;
3847         esac
3848     done
3849 }
3850
3851 icl_flags(){
3852     msvc_common_flags "$@"
3853     for flag; do
3854         case $flag in
3855             # Despite what Intel's documentation says -Wall, which is supported
3856             # on Windows, does enable remarks so disable them here.
3857             -Wall)                echo $flag -Qdiag-disable:remark ;;
3858             -std=c99)             echo -Qstd=c99 ;;
3859             -flto)                echo -ipo ;;
3860         esac
3861     done
3862 }
3863
3864 icc_flags(){
3865     for flag; do
3866         case $flag in
3867             -flto)                echo -ipo ;;
3868             *)                    echo $flag ;;
3869         esac
3870     done
3871 }
3872
3873 pgi_flags(){
3874     for flag; do
3875         case $flag in
3876             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3877             -fomit-frame-pointer) echo -Mnoframe ;;
3878             -g)                   echo -gopt ;;
3879             *)                    echo $flag ;;
3880         esac
3881     done
3882 }
3883
3884 suncc_flags(){
3885     for flag; do
3886         case $flag in
3887             -march=*|-mcpu=*)
3888                 case "${flag#*=}" in
3889                     native)                   echo -xtarget=native       ;;
3890                     v9|niagara)               echo -xarch=sparc          ;;
3891                     ultrasparc)               echo -xarch=sparcvis       ;;
3892                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3893                     i586|pentium)             echo -xchip=pentium        ;;
3894                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3895                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3896                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3897                     pentium4*)          echo -xtarget=pentium4           ;;
3898                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3899                     *-sse3)             echo -xarch=sse3                 ;;
3900                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3901                     bonnell)                   echo -xarch=ssse3         ;;
3902                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3903                     westmere)                  echo -xtarget=westmere    ;;
3904                     silvermont)                echo -xarch=sse4_2        ;;
3905                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3906                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
3907                                                echo -xarch=avx           ;;
3908                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3909                     btver1)                    echo -xarch=amdsse4a      ;;
3910                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
3911                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3912                     k8|opteron|athlon64|athlon-fx)
3913                                                echo -xarch=sse2a         ;;
3914                     athlon*)                   echo -xarch=pentium_proa  ;;
3915                 esac
3916                 ;;
3917             -std=c99)             echo -xc99              ;;
3918             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3919             -fPIC)                echo -KPIC -xcode=pic32 ;;
3920             -W*,*)                echo $flag              ;;
3921             -f*-*|-W*|-mimpure-text)                      ;;
3922             -shared)              echo -G                 ;;
3923             *)                    echo $flag              ;;
3924         esac
3925     done
3926 }
3927
3928 tms470_flags(){
3929     for flag; do
3930         case $flag in
3931             -march=*|-mcpu=*)
3932                 case "${flag#*=}" in
3933                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3934                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3935                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3936                     armv6*|arm11*)          echo -mv=6   ;;
3937                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3938                                             echo -mv=5e  ;;
3939                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3940                 esac
3941                 ;;
3942             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3943             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3944             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3945             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3946             -msoft-float)   echo --float_support=vfplib       ;;
3947             -O[0-3]|-mf=*)  echo $flag                        ;;
3948             -g)             echo -g -mn                       ;;
3949             -pds=*)         echo $flag                        ;;
3950             -D*|-I*)        echo $flag                        ;;
3951             --gcc|--abi=*)  echo $flag                        ;;
3952             -me)            echo $flag                        ;;
3953         esac
3954     done
3955 }
3956
3957 probe_cc(){
3958     pfx=$1
3959     _cc=$2
3960     first=$3
3961
3962     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3963     unset _ld_o _ldflags _ld_lib _ld_path
3964     unset _depflags _DEPCMD _DEPFLAGS
3965     _flags_filter=echo
3966
3967     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3968         true # no-op to avoid reading stdin in following checks
3969     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3970         _type=llvm_gcc
3971         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3972         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3973         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3974         _cflags_speed='-O3'
3975         _cflags_size='-Os'
3976     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3977         _type=gcc
3978         gcc_version=$($_cc --version | head -n1)
3979         gcc_basever=$($_cc -dumpversion)
3980         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3981         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3982         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3983         case $gcc_basever in
3984             2) ;;
3985             2.*) ;;
3986             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
3987         esac
3988         if [ "$first" = true ]; then
3989             case $gcc_basever in
3990                 4.2*)
3991                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
3992             esac
3993         fi
3994         _cflags_speed='-O3'
3995         _cflags_size='-Os'
3996     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3997         _type=icc
3998         _ident=$($_cc --version | head -n1)
3999         _depflags='-MMD'
4000         _cflags_speed='-O3'
4001         _cflags_size='-Os'
4002         _cflags_noopt='-O1'
4003         _flags_filter=icc_flags
4004     elif $_cc -v 2>&1 | grep -q xlc; then
4005         _type=xlc
4006         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4007         _cflags_speed='-O5'
4008         _cflags_size='-O5 -qcompact'
4009     elif $_cc -V 2>/dev/null | grep -q Compaq; then
4010         _type=ccc
4011         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
4012         _DEPFLAGS='-M'
4013         _cflags_speed='-fast'
4014         _cflags_size='-O1'
4015         _flags_filter=ccc_flags
4016     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4017         test -d "$sysroot" || die "No valid sysroot specified."
4018         _type=armcc
4019         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4020         armcc_conf="$PWD/armcc.conf"
4021         $_cc --arm_linux_configure                 \
4022              --arm_linux_config_file="$armcc_conf" \
4023              --configure_sysroot="$sysroot"        \
4024              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4025              die "Error creating armcc configuration file."
4026         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4027         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4028         as_default="${cross_prefix}gcc"
4029         _depflags='-MMD'
4030         _cflags_speed='-O3'
4031         _cflags_size='-Os'
4032     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
4033         _type=tms470
4034         _ident=$($_cc -version | head -n1 | tr -s ' ')
4035         _flags='--gcc --abi=eabi -me'
4036         _cc_e='-ppl -fe=$@'
4037         _cc_o='-fe=$@'
4038         _depflags='-ppa -ppd=$(@:.o=.d)'
4039         _cflags_speed='-O3 -mf=5'
4040         _cflags_size='-O3 -mf=2'
4041         _flags_filter=tms470_flags
4042     elif $_cc -v 2>&1 | grep -q clang; then
4043         _type=clang
4044         _ident=$($_cc --version 2>/dev/null | head -n1)
4045         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4046         _cflags_speed='-O3'
4047         _cflags_size='-Oz'
4048     elif $_cc -V 2>&1 | grep -q Sun; then
4049         _type=suncc
4050         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4051         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4052         _DEPFLAGS='-xM1 -xc99'
4053         _ldflags='-std=c99'
4054         _cflags_speed='-O5'
4055         _cflags_size='-O5 -xspace'
4056         _flags_filter=suncc_flags
4057     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4058         _type=pathscale
4059         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4060         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4061         _cflags_speed='-O2'
4062         _cflags_size='-Os'
4063         _flags_filter='filter_out -Wdisabled-optimization'
4064     elif $_cc -v 2>&1 | grep -q Open64; then
4065         _type=open64
4066         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4067         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4068         _cflags_speed='-O2'
4069         _cflags_size='-Os'
4070         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4071     elif $_cc -V 2>&1 | grep -q Portland; then
4072         _type=pgi
4073         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
4074         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
4075         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
4076         _cflags_size="-O2 -Munroll=c:1 $opt_common"
4077         _cflags_noopt="-O"
4078         _flags_filter=pgi_flags
4079     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4080         _type=armasm
4081         _ident=$($_cc | head -n1)
4082         # 4509: "This form of conditional instruction is deprecated"
4083         _flags="-nologo -ignore 4509"
4084         _flags_filter=armasm_flags
4085     elif $_cc 2>&1 | grep -q Intel; then
4086         _type=icl
4087         _ident=$($_cc 2>&1 | head -n1)
4088         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4089         # Not only is O3 broken on 13.x+ but it is slower on all previous
4090         # versions (tested) as well.
4091         _cflags_speed="-O2"
4092         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4093         if $_cc 2>&1 | grep -q Linker; then
4094             _ld_o='-out:$@'
4095         else
4096             _ld_o='-Fe$@'
4097         fi
4098         _cc_o='-Fo$@'
4099         _cc_e='-P'
4100         _flags_filter=icl_flags
4101         _ld_lib='lib%.a'
4102         _ld_path='-libpath:'
4103         # -Qdiag-error to make icl error when seeing certain unknown arguments
4104         _flags='-nologo -Qdiag-error:4044,10157'
4105         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4106         # with MSVC which enables it by default.
4107         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4108         disable stripping
4109     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4110         # lld can emulate multiple different linkers; in ms link.exe mode,
4111         # the -? parameter gives the help output which contains an identifyable
4112         # string, while it gives an error in other modes.
4113         _type=lld-link
4114         # The link.exe mode doesn't have a switch for getting the version,
4115         # but we can force it back to gnu mode and get the version from there.
4116         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4117         _ld_o='-out:$@'
4118         _flags_filter=msvc_flags
4119         _ld_lib='lib%.a'
4120         _ld_path='-libpath:'
4121     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4122         _type=msvc
4123         _ident=$($_cc 2>&1 | head -n1)
4124         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4125         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4126         _cflags_speed="-O2"
4127         _cflags_size="-O1"
4128         if $_cc -nologo- 2>&1 | grep -q Linker; then
4129             _ld_o='-out:$@'
4130         else
4131             _ld_o='-Fe$@'
4132         fi
4133         _cc_o='-Fo$@'
4134         _cc_e='-P -Fi$@'
4135         _flags_filter=msvc_flags
4136         _ld_lib='lib%.a'
4137         _ld_path='-libpath:'
4138         _flags='-nologo'
4139         disable stripping
4140     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4141         _type=cparser
4142         _ident=$($_cc --version | head -n1)
4143         _depflags='-MMD'
4144         _cflags_speed='-O4'
4145         _cflags_size='-O2'
4146         _flags_filter=cparser_flags
4147     fi
4148
4149     eval ${pfx}_type=\$_type
4150     eval ${pfx}_ident=\$_ident
4151 }
4152
4153 set_ccvars(){
4154     eval ${1}_C=\${_cc_c-\${${1}_C}}
4155     eval ${1}_E=\${_cc_e-\${${1}_E}}
4156     eval ${1}_O=\${_cc_o-\${${1}_O}}
4157
4158     if [ -n "$_depflags" ]; then
4159         eval ${1}_DEPFLAGS=\$_depflags
4160     else
4161         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4162         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4163         eval DEP${1}FLAGS=\$_flags
4164     fi
4165 }
4166
4167 probe_cc cc "$cc" "true"
4168 cflags_filter=$_flags_filter
4169 cflags_speed=$_cflags_speed
4170 cflags_size=$_cflags_size
4171 cflags_noopt=$_cflags_noopt
4172 add_cflags $_flags $_cflags
4173 cc_ldflags=$_ldflags
4174 set_ccvars CC
4175
4176 probe_cc hostcc "$host_cc"
4177 host_cflags_filter=$_flags_filter
4178 add_host_cflags  $_flags $_cflags
4179 set_ccvars HOSTCC
4180
4181 test -n "$cc_type" && enable $cc_type ||
4182     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4183
4184 : ${as_default:=$cc}
4185 : ${objcc_default:=$cc}
4186 : ${dep_cc_default:=$cc}
4187 : ${ld_default:=$cc}
4188 : ${host_ld_default:=$host_cc}
4189 set_default ar as objcc dep_cc ld ln_s host_ld windres
4190
4191 probe_cc as "$as"
4192 asflags_filter=$_flags_filter
4193 add_asflags $_flags $_cflags
4194 set_ccvars AS
4195
4196 probe_cc objcc "$objcc"
4197 objcflags_filter=$_flags_filter
4198 add_objcflags $_flags $_cflags
4199 set_ccvars OBJC
4200
4201 probe_cc ld "$ld"
4202 ldflags_filter=$_flags_filter
4203 add_ldflags $_flags $_ldflags
4204 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4205 LD_O=${_ld_o-$LD_O}
4206 LD_LIB=${_ld_lib-$LD_LIB}
4207 LD_PATH=${_ld_path-$LD_PATH}
4208
4209 probe_cc hostld "$host_ld"
4210 host_ldflags_filter=$_flags_filter
4211 add_host_ldflags $_flags $_ldflags
4212 HOSTLD_O=${_ld_o-$HOSTLD_O}
4213
4214 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4215     probe_cc depcc "$dep_cc"
4216     CCDEP=${_DEPCMD:-$DEPCMD}
4217     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4218     DEPCCFLAGS=$_flags
4219 fi
4220
4221 if $ar 2>&1 | grep -q Microsoft; then
4222     arflags="-nologo"
4223     ar_o='-out:$@'
4224 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
4225     arflags="rq"
4226     ar_o='$@'
4227 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
4228     arflags='-Xany -r -c'
4229     ar_o='$@'
4230 elif $ar 2>&1 | grep -q "\[D\] "; then
4231     arflags="rcD"
4232     ar_o='$@'
4233 else
4234     arflags="rc"
4235     ar_o='$@'
4236 fi
4237
4238 add_cflags $extra_cflags
4239 add_cxxflags $extra_cxxflags
4240 add_objcflags $extra_objcflags
4241 add_asflags $extra_cflags
4242
4243 if test -n "$sysroot"; then
4244     case "$cc_type" in
4245         gcc|llvm_gcc|clang)
4246             add_cppflags --sysroot="$sysroot"
4247             add_ldflags --sysroot="$sysroot"
4248 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
4249             add_cppflags -isysroot "$sysroot"
4250             add_ldflags -isysroot "$sysroot"
4251         ;;
4252         tms470)
4253             add_cppflags -I"$sysinclude"
4254             add_ldflags  --sysroot="$sysroot"
4255         ;;
4256     esac
4257 fi
4258
4259 if test "$cpu" = host; then
4260     enabled cross_compile &&
4261         die "--cpu=host makes no sense when cross-compiling."
4262
4263     case "$cc_type" in
4264         gcc|llvm_gcc)
4265             check_native(){
4266                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4267                 sed -n "/cc1.*$1=/{
4268                             s/.*$1=\\([^ ]*\\).*/\\1/
4269                             p
4270                             q
4271                         }" $TMPE
4272             }
4273             cpu=$(check_native -march || check_native -mcpu)
4274         ;;
4275         clang)
4276             check_native(){
4277                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4278                 sed -n "/cc1.*-target-cpu /{
4279                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4280                             p
4281                             q
4282                         }" $TMPE
4283             }
4284             cpu=$(check_native -march)
4285         ;;
4286     esac
4287
4288     test "${cpu:-host}" = host &&
4289         die "--cpu=host not supported with compiler $cc"
4290 fi
4291
4292 # Deal with common $arch aliases
4293 case "$arch" in
4294     aarch64|arm64)
4295         arch="aarch64"
4296     ;;
4297     arm*|iPad*|iPhone*)
4298         arch="arm"
4299     ;;
4300     mips*|IP*)
4301         case "$arch" in
4302         *el)
4303             add_cppflags -EL
4304             add_ldflags -EL
4305         ;;
4306         *eb)
4307             add_cppflags -EB
4308             add_ldflags -EB
4309         ;;
4310         esac
4311         arch="mips"
4312     ;;
4313     parisc*|hppa*)
4314         arch="parisc"
4315     ;;
4316     "Power Macintosh"|ppc*|powerpc*)
4317         arch="ppc"
4318     ;;
4319     s390|s390x)
4320         arch="s390"
4321     ;;
4322     sh4|sh)
4323         arch="sh4"
4324     ;;
4325     sun4*|sparc*)
4326         arch="sparc"
4327     ;;
4328     tilegx|tile-gx)
4329         arch="tilegx"
4330     ;;
4331     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4332         arch="x86"
4333     ;;
4334 esac
4335
4336 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4337 enable $arch
4338
4339 # Add processor-specific flags
4340 if enabled aarch64; then
4341
4342     case $cpu in
4343         armv*)
4344             cpuflags="-march=$cpu"
4345         ;;
4346         *)
4347             cpuflags="-mcpu=$cpu"
4348         ;;
4349     esac
4350
4351 elif enabled alpha; then
4352
4353     cpuflags="-mcpu=$cpu"
4354
4355 elif enabled arm; then
4356
4357     check_arm_arch() {
4358         check_cpp_condition stddef.h \
4359             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4360             $cpuflags
4361     }
4362
4363     probe_arm_arch() {
4364         if   check_arm_arch 4;        then echo armv4
4365         elif check_arm_arch 4T;       then echo armv4t
4366         elif check_arm_arch 5;        then echo armv5
4367         elif check_arm_arch 5E;       then echo armv5e
4368         elif check_arm_arch 5T;       then echo armv5t
4369         elif check_arm_arch 5TE;      then echo armv5te
4370         elif check_arm_arch 5TEJ;     then echo armv5te
4371         elif check_arm_arch 6;        then echo armv6
4372         elif check_arm_arch 6J;       then echo armv6j
4373         elif check_arm_arch 6K;       then echo armv6k
4374         elif check_arm_arch 6Z;       then echo armv6z
4375         elif check_arm_arch 6ZK;      then echo armv6zk
4376         elif check_arm_arch 6T2;      then echo armv6t2
4377         elif check_arm_arch 7;        then echo armv7
4378         elif check_arm_arch 7A  7_A;  then echo armv7-a
4379         elif check_arm_arch 7S;       then echo armv7-a
4380         elif check_arm_arch 7R  7_R;  then echo armv7-r
4381         elif check_arm_arch 7M  7_M;  then echo armv7-m
4382         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4383         elif check_arm_arch 8A  8_A;  then echo armv8-a
4384         fi
4385     }
4386
4387     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4388
4389     case $cpu in
4390         armv*)
4391             cpuflags="-march=$cpu"
4392             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4393         ;;
4394         *)
4395             cpuflags="-mcpu=$cpu"
4396             case $cpu in
4397                 cortex-a*)                               subarch=armv7a  ;;
4398                 cortex-r*)                               subarch=armv7r  ;;
4399                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4400                 arm11*)                                  subarch=armv6   ;;
4401                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4402                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4403                 *)                             subarch=$(probe_arm_arch) ;;
4404             esac
4405         ;;
4406     esac
4407
4408     case "$subarch" in
4409         armv5t*)    enable fast_clz                ;;
4410         armv[6-8]*)
4411             enable fast_clz
4412             disabled fast_unaligned || enable fast_unaligned
4413             ;;
4414     esac
4415
4416 elif enabled avr32; then
4417
4418     case $cpu in
4419         ap7[02]0[0-2])
4420             subarch="avr32_ap"
4421             cpuflags="-mpart=$cpu"
4422         ;;
4423         ap)
4424             subarch="avr32_ap"
4425             cpuflags="-march=$cpu"
4426         ;;
4427         uc3[ab]*)
4428             subarch="avr32_uc"
4429             cpuflags="-mcpu=$cpu"
4430         ;;
4431         uc)
4432             subarch="avr32_uc"
4433             cpuflags="-march=$cpu"
4434         ;;
4435     esac
4436
4437 elif enabled bfin; then
4438
4439     cpuflags="-mcpu=$cpu"
4440
4441 elif enabled mips; then
4442
4443     cpuflags="-march=$cpu"
4444
4445     if [ "$cpu" != "generic" ]; then
4446         disable mips32r2
4447         disable mips32r5
4448         disable mips64r2
4449         disable mips32r6
4450         disable mips64r6
4451         disable loongson2
4452         disable loongson3
4453
4454         case $cpu in
4455             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4456                 enable mips32r2
4457                 disable msa
4458             ;;
4459             p5600|i6400|p6600)
4460                 disable mipsdsp
4461                 disable mipsdspr2
4462             ;;
4463             loongson*)
4464                 enable loongson2
4465                 enable loongson3
4466                 enable local_aligned_8 local_aligned_16 local_aligned_32
4467                 enable simd_align_16
4468                 enable fast_64bit
4469                 enable fast_clz
4470                 enable fast_cmov
4471                 enable fast_unaligned
4472                 disable aligned_stack
4473                 disable mipsfpu
4474                 disable mipsdsp
4475                 disable mipsdspr2
4476                 case $cpu in
4477                     loongson3*)
4478                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4479                     ;;
4480                     loongson2e)
4481                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4482                     ;;
4483                     loongson2f)
4484                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4485                     ;;
4486                 esac
4487             ;;
4488             *)
4489                 # Unknown CPU. Disable everything.
4490                 warn "unknown CPU. Disabling all MIPS optimizations."
4491                 disable mipsfpu
4492                 disable mipsdsp
4493                 disable mipsdspr2
4494                 disable msa
4495                 disable mmi
4496             ;;
4497         esac
4498
4499         case $cpu in
4500             24kc)
4501                 disable mipsfpu
4502                 disable mipsdsp
4503                 disable mipsdspr2
4504             ;;
4505             24kf*)
4506                 disable mipsdsp
4507                 disable mipsdspr2
4508             ;;
4509             24kec|34kc|1004kc)
4510                 disable mipsfpu
4511                 disable mipsdspr2
4512             ;;
4513             24kef*|34kf*|1004kf*)
4514                 disable mipsdspr2
4515             ;;
4516             74kc)
4517                 disable mipsfpu
4518             ;;
4519             p5600)
4520                 enable mips32r5
4521                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4522             ;;
4523             i6400)
4524                 enable mips64r6
4525                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4526             ;;
4527             p6600)
4528                 enable mips64r6
4529                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4530             ;;
4531         esac
4532     else
4533         # We do not disable anything. Is up to the user to disable the unwanted features.
4534         warn 'generic cpu selected'
4535     fi
4536
4537 elif enabled ppc; then
4538
4539     disable ldbrx
4540
4541     case $(tolower $cpu) in
4542         601|ppc601|powerpc601)
4543             cpuflags="-mcpu=601"
4544             disable altivec
4545         ;;
4546         603*|ppc603*|powerpc603*)
4547             cpuflags="-mcpu=603"
4548             disable altivec
4549         ;;
4550         604*|ppc604*|powerpc604*)
4551             cpuflags="-mcpu=604"
4552             disable altivec
4553         ;;
4554         g3|75*|ppc75*|powerpc75*)
4555             cpuflags="-mcpu=750"
4556             disable altivec
4557         ;;
4558         g4|745*|ppc745*|powerpc745*)
4559             cpuflags="-mcpu=7450"
4560             disable vsx
4561         ;;
4562         74*|ppc74*|powerpc74*)
4563             cpuflags="-mcpu=7400"
4564             disable vsx
4565         ;;
4566         g5|970|ppc970|powerpc970)
4567             cpuflags="-mcpu=970"
4568             disable vsx
4569         ;;
4570         power[3-6]*)
4571             cpuflags="-mcpu=$cpu"
4572             disable vsx
4573         ;;
4574         power[7-8]*)
4575             cpuflags="-mcpu=$cpu"
4576         ;;
4577         cell)
4578             cpuflags="-mcpu=cell"
4579             enable ldbrx
4580             disable vsx
4581         ;;
4582         e500mc)
4583             cpuflags="-mcpu=e500mc"
4584             disable altivec
4585         ;;
4586         e500v2)
4587             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4588             disable altivec
4589             disable dcbzl
4590         ;;
4591         e500)
4592             cpuflags="-mcpu=8540 -mhard-float"
4593             disable altivec
4594             disable dcbzl
4595         ;;
4596     esac
4597
4598 elif enabled sparc; then
4599
4600     case $cpu in
4601         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4602             cpuflags="-mcpu=$cpu"
4603         ;;
4604         ultrasparc*|niagara[234])
4605             cpuflags="-mcpu=$cpu"
4606         ;;
4607     esac
4608
4609 elif enabled x86; then
4610
4611     case $cpu in
4612         i[345]86|pentium)
4613             cpuflags="-march=$cpu"
4614             disable i686
4615             disable mmx
4616         ;;
4617         # targets that do NOT support nopl and conditional mov (cmov)
4618         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4619             cpuflags="-march=$cpu"
4620             disable i686
4621         ;;
4622         # targets that do support nopl and conditional mov (cmov)
4623         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4624         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4625         |amdfam10|barcelona|b[dt]ver*|znver*)
4626             cpuflags="-march=$cpu"
4627             enable i686
4628             enable fast_cmov
4629         ;;
4630         # targets that do support conditional mov but on which it's slow
4631         pentium4|pentium4m|prescott|nocona)
4632             cpuflags="-march=$cpu"
4633             enable i686
4634             disable fast_cmov
4635         ;;
4636     esac
4637
4638 fi
4639
4640 if [ "$cpu" != generic ]; then
4641     add_cflags  $cpuflags
4642     add_asflags $cpuflags
4643     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4644 fi
4645
4646 # compiler sanity check
4647 check_exec <<EOF
4648 int main(void){ return 0; }
4649 EOF
4650 if test "$?" != 0; then
4651     echo "$cc is unable to create an executable file."
4652     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4653         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4654         echo "Only do this if you know what cross compiling means."
4655     fi
4656     die "C compiler test failed."
4657 fi
4658
4659 add_cppflags -D_ISOC99_SOURCE
4660 add_cxxflags -D__STDC_CONSTANT_MACROS
4661 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4662
4663 # some compilers silently accept -std=c11, so we also need to check that the
4664 # version macro is defined properly
4665 if test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L"; then
4666     add_cflags -std=c11
4667 else
4668     check_cflags -std=c99
4669 fi
4670
4671 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4672 #include <stdlib.h>
4673 EOF
4674 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4675 #include <stdlib.h>
4676 EOF
4677
4678 add_host_cppflags -D_ISOC99_SOURCE
4679 check_host_cflags -std=c99
4680 check_host_cflags -Wall
4681 check_host_cflags -O3
4682
4683 check_64bit(){
4684     arch32=$1
4685     arch64=$2
4686     expr=$3
4687     check_code cc "" "int test[2*($expr) - 1]" &&
4688         subarch=$arch64 || subarch=$arch32
4689 }
4690
4691 case "$arch" in
4692     aarch64|alpha|ia64)
4693         spic=$shared
4694     ;;
4695     mips)
4696         check_64bit mips mips64 '_MIPS_SIM > 1'
4697         spic=$shared
4698     ;;
4699     parisc)
4700         check_64bit parisc parisc64 'sizeof(void *) > 4'
4701         spic=$shared
4702     ;;
4703     ppc)
4704         check_64bit ppc ppc64 'sizeof(void *) > 4'
4705         spic=$shared
4706     ;;
4707     s390)
4708         check_64bit s390 s390x 'sizeof(void *) > 4'
4709         spic=$shared
4710     ;;
4711     sparc)
4712         check_64bit sparc sparc64 'sizeof(void *) > 4'
4713         spic=$shared
4714     ;;
4715     x86)
4716         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4717         # Treat x32 as x64 for now. Note it also needs spic=$shared
4718         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4719             subarch=x86_64
4720         if test "$subarch" = "x86_64"; then
4721             spic=$shared
4722         fi
4723     ;;
4724     ppc)
4725         check_cc <<EOF && subarch="ppc64"
4726         int test[(int)sizeof(char*) - 7];
4727 EOF
4728     ;;
4729 esac
4730
4731 enable $subarch
4732 enabled spic && enable_weak pic
4733
4734 # OS specific
4735 case $target_os in
4736     aix)
4737         SHFLAGS=-shared
4738         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4739         enabled shared && add_ldflags -Wl,-brtl
4740         ;;
4741     android)
4742         disable symver
4743         enable section_data_rel_ro
4744         SLIB_INSTALL_NAME='$(SLIBNAME)'
4745         SLIB_INSTALL_LINKS=
4746         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4747         ;;
4748     haiku)
4749         prefix_default="/boot/common"
4750         network_extralibs="-lnetwork"
4751         host_libs=
4752         ;;
4753     sunos)
4754         SHFLAGS='-shared -Wl,-h,$$(@F)'
4755         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4756         network_extralibs="-lsocket -lnsl"
4757         add_cppflags -D__EXTENSIONS__
4758         # When using suncc to build, the Solaris linker will mark
4759         # an executable with each instruction set encountered by
4760         # the Solaris assembler.  As our libraries contain their own
4761         # guards for processor-specific code, instead suppress
4762         # generation of the HWCAPS ELF section on Solaris x86 only.
4763         enabled_all suncc x86 &&
4764             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4765             add_ldflags -Wl,-M,mapfile
4766         nm_default='nm -P -g'
4767         version_script='-M'
4768         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
4769         ;;
4770     netbsd)
4771         disable symver
4772         oss_indev_extralibs="-lossaudio"
4773         oss_outdev_extralibs="-lossaudio"
4774         enabled gcc || check_ldflags -Wl,-zmuldefs
4775         ;;
4776     openbsd|bitrig)
4777         disable symver
4778         SHFLAGS='-shared'
4779         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4780         SLIB_INSTALL_LINKS=
4781         oss_indev_extralibs="-lossaudio"
4782         oss_outdev_extralibs="-lossaudio"
4783         ;;
4784     dragonfly)
4785         disable symver
4786         ;;
4787     freebsd)
4788         ;;
4789     bsd/os)
4790         add_extralibs -lpoll -lgnugetopt
4791         strip="strip -d"
4792         ;;
4793     darwin)
4794         enabled ppc && add_asflags -force_cpusubtype_ALL
4795         install_name_dir_default='$(SHLIBDIR)'
4796         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4797         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4798         strip="${strip} -x"
4799         add_ldflags -Wl,-dynamic,-search_paths_first
4800         SLIBSUF=".dylib"
4801         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4802         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4803         objformat="macho"
4804         enabled x86_64 && objformat="macho64"
4805         enabled_any pic shared x86_64 ||
4806             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4807         check_header dispatch/dispatch.h &&
4808             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
4809         version_script='-exported_symbols_list'
4810         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
4811         ;;
4812     msys*)
4813         die "Native MSYS builds are discouraged, please use the MINGW environment."
4814         ;;
4815     mingw32*|mingw64*)
4816         if test $target_os = "mingw32ce"; then
4817             disable network
4818         else
4819             target_os=mingw32
4820         fi
4821         decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
4822         decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
4823         LIBTARGET=i386
4824         if enabled x86_64; then
4825             LIBTARGET="i386:x86-64"
4826         elif enabled arm; then
4827             LIBTARGET=arm-wince
4828         fi
4829         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4830         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4831         shlibdir_default="$bindir_default"
4832         SLIBPREF=""
4833         SLIBSUF=".dll"
4834         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4835         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4836         dlltool="${cross_prefix}dlltool"
4837         if check_cmd lib.exe -list; then
4838             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4839             if enabled x86_64; then
4840                 LIBTARGET=x64
4841             fi
4842         elif check_cmd $dlltool --version; then
4843             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4844         fi
4845         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4846         SLIB_INSTALL_LINKS=
4847         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4848         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4849         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--disable-auto-image-base'
4850         objformat="win32"
4851         ranlib=:
4852         enable dos_paths
4853         check_ldflags -Wl,--nxcompat,--dynamicbase
4854         # Lets work around some stupidity in binutils.
4855         # ld will strip relocations from executables even though we need them
4856         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4857         # however ld then forgets what the entry point should be (oops) so we
4858         # have to manually (re)set it.
4859         if enabled x86_32; then
4860             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
4861         elif enabled x86_64; then
4862             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
4863             check_ldflags -Wl,--high-entropy-va # binutils 2.25
4864             # Set image base >4GB for extra entropy with HEASLR
4865             add_ldexeflags -Wl,--image-base,0x140000000
4866             append SHFLAGS -Wl,--image-base,0x180000000
4867         fi
4868         ;;
4869     win32|win64)
4870         disable symver
4871         if enabled shared; then
4872             # Link to the import library instead of the normal static library
4873             # for shared libs.
4874             LD_LIB='%.lib'
4875             # Cannot build both shared and static libs with MSVC or icl.
4876             disable static
4877         fi
4878         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4879         shlibdir_default="$bindir_default"
4880         SLIBPREF=""
4881         SLIBSUF=".dll"
4882         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4883         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4884         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4885         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4886         SLIB_INSTALL_LINKS=
4887         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4888         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4889         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4890         objformat="win32"
4891         ranlib=:
4892         enable dos_paths
4893         ;;
4894     cygwin*)
4895         target_os=cygwin
4896         shlibdir_default="$bindir_default"
4897         SLIBPREF="cyg"
4898         SLIBSUF=".dll"
4899         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4900         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4901         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4902         SLIB_INSTALL_LINKS=
4903         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4904         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4905         objformat="win32"
4906         enable dos_paths
4907         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4908         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4909         ;;
4910     *-dos|freedos|opendos)
4911         network_extralibs="-lsocket"
4912         objformat="coff"
4913         enable dos_paths
4914         add_cppflags -U__STRICT_ANSI__
4915         ;;
4916     linux)
4917         enable dv1394
4918         enable section_data_rel_ro
4919         ;;
4920     irix*)
4921         target_os=irix
4922         ranlib="echo ignoring ranlib"
4923         ;;
4924     os/2*)
4925         strip="lxlite -CS"
4926         objformat="aout"
4927         add_cppflags -D_GNU_SOURCE
4928         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4929         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4930         LIBSUF="_s.a"
4931         SLIBPREF=""
4932         SLIBSUF=".dll"
4933         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4934         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4935         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
4936             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
4937             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
4938             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
4939             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
4940         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
4941             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
4942         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4943         SLIB_INSTALL_LINKS=
4944         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
4945         enable dos_paths
4946         enable_weak os2threads
4947         ;;
4948     gnu/kfreebsd)
4949         add_cppflags -D_BSD_SOURCE
4950         ;;
4951     gnu)
4952         ;;
4953     qnx)
4954         add_cppflags -D_QNX_SOURCE
4955         network_extralibs="-lsocket"
4956         ;;
4957     symbian)
4958         SLIBSUF=".dll"
4959         enable dos_paths
4960         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4961         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4962         add_ldflags -Wl,--target1-abs,--no-undefined \
4963                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4964                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4965         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4966                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4967                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4968         ;;
4969     osf1)
4970         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4971         ;;
4972     minix)
4973         ;;
4974     plan9)
4975         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4976                      -D_REENTRANT_SOURCE        \
4977                      -D_RESEARCH_SOURCE         \
4978                      -DFD_SETSIZE=96            \
4979                      -DHAVE_SOCK_OPTS
4980         add_compat strtod.o strtod=avpriv_strtod
4981         network_extralibs='-lbsd'
4982         exeobjs=compat/plan9/main.o
4983         disable ffserver
4984         cp_f='cp'
4985         ;;
4986     none)
4987         ;;
4988     *)
4989         die "Unknown OS '$target_os'."
4990         ;;
4991 esac
4992
4993 # test if creating links works
4994 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
4995 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
4996 mkdir "$link_dest"
4997 $ln_s "$link_dest" "$link_name"
4998 touch "$link_dest/test_file"
4999 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5000     # create link to source path
5001     [ -e src ] && rm src
5002     $ln_s "$source_path" src
5003     source_link=src
5004 else
5005     # creating directory links doesn't work
5006     # fall back to using the full source path
5007     source_link="$source_path"
5008 fi
5009 # cleanup
5010 rm -r "$link_dest"
5011 rm -r "$link_name"
5012
5013 # determine libc flavour
5014
5015 probe_libc(){
5016     pfx=$1
5017     pfx_no_=${pfx%_}
5018     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5019     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5020         eval ${pfx}libc_type=uclibc
5021         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5022     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5023         eval ${pfx}libc_type=glibc
5024         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5025     # MinGW headers can be installed on Cygwin, so check for newlib first.
5026     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5027         eval ${pfx}libc_type=newlib
5028         add_${pfx}cppflags -U__STRICT_ANSI__
5029     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5030     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5031         eval ${pfx}libc_type=mingw64
5032         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5033             add_compat msvcrt/snprintf.o
5034             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5035         fi
5036         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5037         eval test \$${pfx_no_}cc_type = "gcc" &&
5038             add_${pfx}cppflags -D__printf__=__gnu_printf__
5039     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5040          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5041         eval ${pfx}libc_type=mingw32
5042         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5043             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5044             die "ERROR: MinGW32 runtime version must be >= 3.15."
5045         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5046         check_${pfx}cpp_condition _mingw.h "defined(_WIN32_WINNT) && _WIN32_WINNT >= 0x0502" ||
5047             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
5048         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700__" &&
5049             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5050         eval test \$${pfx_no_}cc_type = "gcc" &&
5051             add_${pfx}cppflags -D__printf__=__gnu_printf__
5052     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5053         eval ${pfx}libc_type=msvcrt
5054         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5055             if [ "$pfx" = host_ ]; then
5056                 add_host_cppflags -Dsnprintf=_snprintf
5057             else
5058                 add_compat strtod.o strtod=avpriv_strtod
5059                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5060                                              _snprintf=avpriv_snprintf  \
5061                                              vsnprintf=avpriv_vsnprintf
5062             fi
5063         fi
5064         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5065         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5066         # 0x601 by default unless something else is set by the user.
5067         # This can easily lead to us detecting functions only present
5068         # in such new versions and producing binaries requiring windows 7.0.
5069         # Therefore explicitly set the default to XP unless the user has
5070         # set something else on the command line.
5071         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5072         # family. For these cases, configure is free to use any functions
5073         # found in the SDK headers by default. (Alternatively, we could force
5074         # _WIN32_WINNT to 0x0602 in that case.)
5075         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5076             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
5077 #ifdef WINAPI_FAMILY
5078 #include <winapifamily.h>
5079 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5080 #error not desktop
5081 #endif
5082 #endif
5083 EOF
5084         if [ "$pfx" = "" ]; then
5085             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5086             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5087         fi
5088     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5089         eval ${pfx}libc_type=klibc
5090     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5091         eval ${pfx}libc_type=bionic
5092     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5093         eval ${pfx}libc_type=solaris
5094         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5095     fi
5096     check_${pfx}cc <<EOF
5097 #include <time.h>
5098 void *v = localtime_r;
5099 EOF
5100 test "$?" != 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
5101 #include <time.h>
5102 void *v = localtime_r;
5103 EOF
5104
5105 }
5106
5107 probe_libc
5108 test -n "$libc_type" && enable libc_$libc_type
5109 probe_libc host_
5110 test -n "$host_libc_type" && enable host_libc_$host_libc_type
5111
5112 case $libc_type in
5113     bionic)
5114         add_compat strtod.o strtod=avpriv_strtod
5115         ;;
5116 esac
5117
5118 # hacks for compiler/libc/os combinations
5119
5120 if enabled_all tms470 libc_glibc; then
5121     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
5122     add_cppflags -D__USER_LABEL_PREFIX__=
5123     add_cppflags -D__builtin_memset=memset
5124     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
5125     add_cflags   -pds=48    # incompatible redefinition of macro
5126 fi
5127
5128 if enabled_all ccc libc_glibc; then
5129     add_ldflags -Wl,-z,now  # calls to libots crash without this
5130 fi
5131
5132 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5133     add_cppflags '-I\$(SRC_PATH)/compat/float'
5134
5135 esc(){
5136     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
5137 }
5138
5139 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
5140
5141 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5142
5143 set_default libdir
5144 : ${shlibdir_default:="$libdir"}
5145 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5146
5147 set_default $PATHS_LIST
5148 set_default nm
5149
5150 # we need to build at least one lib type
5151 if ! enabled_any static shared; then
5152     cat <<EOF
5153 At least one library type must be built.
5154 Specify --enable-static to build the static libraries or --enable-shared to
5155 build the shared libraries as well. To only build the shared libraries specify
5156 --disable-static in addition to --enable-shared.
5157 EOF
5158     exit 1
5159 fi
5160
5161 die_license_disabled() {
5162     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
5163 }
5164
5165 die_license_disabled_gpl() {
5166     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
5167 }
5168
5169 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
5170 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
5171
5172 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
5173 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
5174
5175 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
5176
5177 disabled optimizations || check_cflags -fomit-frame-pointer
5178
5179 enable_weak_pic() {
5180     disabled pic && return
5181     enable pic
5182     add_cppflags -DPIC
5183     case "$target_os" in
5184     mingw*|cygwin*)
5185         ;;
5186     *)
5187         add_cflags -fPIC
5188         ;;
5189     esac
5190     add_asflags  -fPIC
5191 }
5192
5193 enabled pic && enable_weak_pic
5194
5195 check_cc <<EOF || die "Symbol mangling check failed."
5196 int ff_extern;
5197 EOF
5198 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5199 extern_prefix=${sym%%ff_extern*}
5200
5201 check_cc <<EOF && enable_weak inline_asm
5202 void foo(void) { __asm__ volatile ("" ::); }
5203 EOF
5204
5205 _restrict=
5206 for restrict_keyword in restrict __restrict__ __restrict; do
5207     check_cc <<EOF && _restrict=$restrict_keyword && break
5208 void foo(char * $restrict_keyword p);
5209 EOF
5210 done
5211
5212 check_cc <<EOF && enable pragma_deprecated
5213 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
5214 EOF
5215
5216 check_cc <<EOF && enable attribute_packed
5217 struct { int x; } __attribute__((packed)) x;
5218 EOF
5219
5220 check_cc <<EOF && enable attribute_may_alias
5221 union { int x; } __attribute__((may_alias)) x;
5222 EOF
5223
5224 check_cc <<EOF || die "endian test failed"
5225 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5226 EOF
5227 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5228
5229 if ! enabled ppc64 || enabled bigendian; then
5230     disable vsx
5231 fi
5232
5233 check_gas() {
5234     log "check_gas using '$as' as AS"
5235     # :vararg is used on aarch64, arm and ppc altivec
5236     check_as <<EOF || return 1
5237 .macro m n, y:vararg=0
5238 \n: .int \y
5239 .endm
5240 m x
5241 EOF
5242     # .altmacro is only used in arm asm
5243     ! enabled arm || check_as <<EOF || return 1
5244 .altmacro
5245 EOF
5246     enable gnu_as
5247     return 0
5248 }
5249
5250 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5251     nogas=:
5252     enabled_any arm aarch64 && nogas=die
5253     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5254     as_noop=-v
5255
5256     case $as_type in
5257         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5258         gcc)  gaspp_as_type=gas ;;
5259         *)    gaspp_as_type=$as_type ;;
5260     esac
5261
5262     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5263
5264     test "${as#*gas-preprocessor.pl}" != "$as" ||
5265     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5266         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5267
5268     if ! check_gas ; then
5269         as=${gas:=$as}
5270         check_gas || \
5271             $nogas "GNU assembler not found, install/update gas-preprocessor"
5272     fi
5273
5274     check_as <<EOF && enable as_func
5275 .func test
5276 .endfunc
5277 EOF
5278 fi
5279
5280 check_inline_asm inline_asm_labels '"1:\n"'
5281
5282 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5283
5284 if enabled aarch64; then
5285     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5286     # internal assembler in clang 3.3 does not support this instruction
5287     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5288     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5289
5290     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5291
5292 elif enabled alpha; then
5293
5294     check_cflags -mieee
5295
5296 elif enabled arm; then
5297
5298     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
5299
5300     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
5301 float func(float a, float b){ return a+b; }
5302 EOF
5303
5304     enabled thumb && check_cflags -mthumb || check_cflags -marm
5305
5306     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
5307         enable vfp_args
5308     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5309         enable vfp_args
5310     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5311         case "${cross_prefix:-$cc}" in
5312             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
5313             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
5314 __asm__ (".eabi_attribute 28, 1");
5315 int main(void) { return 0; }
5316 EOF
5317         esac
5318         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5319     fi
5320
5321     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5322     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5323     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5324     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5325     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5326     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5327     enabled setend  && check_insn setend  'setend be'
5328
5329     [ $target_os = linux ] || [ $target_os = android ] ||
5330         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5331             $ARCH_EXT_LIST_ARM
5332
5333     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5334
5335     check_as <<EOF && enable as_dn_directive
5336 ra .dn d0.i16
5337 .unreq ra
5338 EOF
5339     check_as <<EOF && enable as_fpu_directive
5340 .fpu neon
5341 EOF
5342
5343     # llvm's integrated assembler supports .object_arch from llvm 3.5
5344     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
5345 .object_arch armv4
5346 EOF
5347
5348     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5349
5350 elif enabled mips; then
5351
5352     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5353     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5354     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5355
5356     # Enable minimum ISA based on selected options
5357     if enabled mips64; then
5358         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5359         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5360         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5361     else
5362         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5363         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5364         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5365         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5366     fi
5367
5368     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5369     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5370     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
5371     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5372     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5373
5374 elif enabled parisc; then
5375
5376     if enabled gcc; then
5377         case $($cc -dumpversion) in
5378             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5379         esac
5380     fi
5381
5382 elif enabled ppc; then
5383
5384     enable local_aligned_8 local_aligned_16 local_aligned_32
5385
5386     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5387     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5388     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5389     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5390
5391     # AltiVec flags: The FSF version of GCC differs from the Apple version
5392     if enabled altivec; then
5393         check_cflags -maltivec -mabi=altivec &&
5394         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
5395         check_cflags -faltivec
5396
5397         # check if our compiler supports Motorola AltiVec C API
5398         check_cc <<EOF || disable altivec
5399 $inc_altivec_h
5400 int main(void) {
5401     vector signed int v1 = (vector signed int) { 0 };
5402     vector signed int v2 = (vector signed int) { 1 };
5403     v1 = vec_add(v1, v2);
5404     return 0;
5405 }
5406 EOF
5407
5408         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5409     fi
5410
5411     if enabled vsx; then
5412         check_cflags -mvsx &&
5413         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
5414     fi
5415
5416     if enabled power8; then
5417         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
5418     fi
5419
5420 elif enabled x86; then
5421
5422     check_builtin rdtsc    intrin.h   "__rdtsc()"
5423     check_builtin mm_empty mmintrin.h "_mm_empty()"
5424
5425     enable local_aligned_8 local_aligned_16 local_aligned_32
5426
5427     # check whether EBP is available on x86
5428     # As 'i' is stored on the stack, this program will crash
5429     # if the base pointer is used to access it because the
5430     # base pointer is cleared in the inline assembly code.
5431     check_exec_crash <<EOF && enable ebp_available
5432 volatile int i=0;
5433 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5434 return i;
5435 EOF
5436
5437     # check whether EBX is available on x86
5438     check_inline_asm ebx_available '""::"b"(0)' &&
5439         check_inline_asm ebx_available '"":::"%ebx"'
5440
5441     # check whether xmm clobbers are supported
5442     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5443
5444     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5445         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5446
5447     # check whether binutils is new enough to compile SSSE3/MMXEXT
5448     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5449     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5450
5451     if ! disabled_any asm mmx yasm; then
5452         if check_cmd $yasmexe --version; then
5453             enabled x86_64 && yasm_extra="-m amd64"
5454             yasm_debug="-g dwarf2"
5455         elif check_cmd nasm -v; then
5456             yasmexe=nasm
5457             yasm_debug="-g -F dwarf"
5458             if enabled x86_64; then
5459                 case "$objformat" in
5460                     elf)   objformat=elf64 ;;
5461                     win32) objformat=win64 ;;
5462                 esac
5463             fi
5464         fi
5465
5466         YASMFLAGS="-f $objformat $yasm_extra"
5467         enabled pic               && append YASMFLAGS "-DPIC"
5468         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
5469         case "$objformat" in
5470             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
5471         esac
5472
5473         check_yasm "movbe ecx, [5]" && enable yasm ||
5474             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
5475         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
5476         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
5477         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
5478         check_yasm "CPU amdnop" || disable cpunop
5479     fi
5480
5481     case "$cpu" in
5482         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5483             disable fast_clz
5484         ;;
5485     esac
5486
5487 fi
5488
5489 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
5490
5491 check_ldflags -Wl,--as-needed
5492 check_ldflags -Wl,-z,noexecstack
5493
5494 if check_func dlopen && check_func dlsym; then
5495     ldl=
5496 elif check_func dlopen -ldl && check_func dlsym -ldl; then
5497     ldl=-ldl
5498 fi
5499
5500 avisynth_demuxer_extralibs='$ldl'
5501 cuda_extralibs='$ldl'
5502 decklink_outdev_extralibs="$decklink_outdev_extralibs $ldl"
5503 decklink_indev_extralibs="$decklink_indev_extralibs $ldl"
5504 frei0r_filter_extralibs='$ldl'
5505 frei0r_src_filter_extralibs='$ldl'
5506 ladspa_filter_extralibs='$ldl'
5507 nvenc_extralibs='$ldl'
5508 coreimage_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5509 coreimagesrc_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5510
5511 if ! disabled network; then
5512     check_func getaddrinfo $network_extralibs
5513     check_func inet_aton $network_extralibs
5514
5515     check_type netdb.h "struct addrinfo"
5516     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5517     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5518     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5519     check_type poll.h "struct pollfd"
5520     check_type netinet/sctp.h "struct sctp_event_subscribe"
5521     check_struct "sys/socket.h" "struct msghdr" msg_flags
5522     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5523     check_type netinet/in.h "struct sockaddr_in6"
5524     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5525     check_type "sys/types.h sys/socket.h" socklen_t
5526
5527     # Prefer arpa/inet.h over winsock2
5528     if check_header arpa/inet.h ; then
5529         check_func closesocket
5530     elif check_header winsock2.h ; then
5531         check_func_headers winsock2.h closesocket -lws2 &&
5532             network_extralibs="-lws2" ||
5533         { check_func_headers winsock2.h closesocket -lws2_32 &&
5534             network_extralibs="-lws2_32"; } || disable winsock2_h network
5535         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5536
5537         check_type ws2tcpip.h socklen_t
5538         check_type ws2tcpip.h "struct addrinfo"
5539         check_type ws2tcpip.h "struct group_source_req"
5540         check_type ws2tcpip.h "struct ip_mreq_source"
5541         check_type ws2tcpip.h "struct ipv6_mreq"
5542         check_type winsock2.h "struct pollfd"
5543         check_struct winsock2.h "struct sockaddr" sa_len
5544         check_type ws2tcpip.h "struct sockaddr_in6"
5545         check_type ws2tcpip.h "struct sockaddr_storage"
5546     else
5547         disable network
5548     fi
5549 fi
5550
5551 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5552 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5553 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5554 check_builtin sarestart signal.h "SA_RESTART"
5555 check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" -lpthread
5556 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5557 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5558 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5559 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5560
5561 case "$custom_allocator" in
5562     jemalloc)
5563         # jemalloc by default does not use a prefix
5564         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5565     ;;
5566     tcmalloc)
5567         require_pkg_config libtcmalloc gperftools/tcmalloc.h tc_malloc
5568         malloc_prefix=tc_
5569     ;;
5570 esac
5571
5572 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5573 check_func  ${malloc_prefix}memalign            && enable memalign
5574 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5575
5576 check_func  access
5577 check_func_headers stdlib.h arc4random
5578 check_func_headers time.h clock_gettime ||
5579     { check_lib time.h clock_gettime -lrt && LIBRT="-lrt"; }
5580 check_func  fcntl
5581 check_func  fork
5582 check_func  gethrtime
5583 check_func  getopt
5584 check_func  getrusage
5585 check_func  gettimeofday
5586 check_func  isatty
5587 check_func  mach_absolute_time
5588 check_func  mkstemp
5589 check_func  mmap
5590 check_func  mprotect
5591 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5592 check_func_headers time.h nanosleep ||
5593     { check_lib time.h nanosleep -lrt && LIBRT="-lrt"; }
5594 check_func  sched_getaffinity
5595 check_func  setrlimit
5596 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5597 check_func  strerror_r
5598 check_func  sysconf
5599 check_func  sysctl
5600 check_func  usleep
5601
5602 check_func_headers conio.h kbhit
5603 check_func_headers io.h setmode
5604 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5605 check_func_headers stdlib.h getenv
5606 check_func_headers sys/stat.h lstat
5607
5608 check_func_headers windows.h CoTaskMemFree -lole32
5609 check_func_headers windows.h GetProcessAffinityMask
5610 check_func_headers windows.h GetProcessTimes
5611 check_func_headers windows.h GetSystemTimeAsFileTime
5612 check_func_headers windows.h LoadLibrary
5613 check_func_headers windows.h MapViewOfFile
5614 check_func_headers windows.h PeekNamedPipe
5615 check_func_headers windows.h SetConsoleTextAttribute
5616 check_func_headers windows.h SetConsoleCtrlHandler
5617 check_func_headers windows.h Sleep
5618 check_func_headers windows.h VirtualAlloc
5619 check_struct windows.h "CONDITION_VARIABLE" Ptr
5620 check_func_headers glob.h glob
5621 enabled xlib &&
5622     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5623
5624 check_header AudioToolbox/AudioToolbox.h
5625 check_header direct.h
5626 check_header dirent.h
5627 check_header dlfcn.h
5628 check_header d3d11.h
5629 check_header dxva.h
5630 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5631 check_header io.h
5632 check_header libcrystalhd/libcrystalhd_if.h
5633 check_header mach/mach_time.h
5634 check_header malloc.h
5635 check_header net/udplite.h
5636 check_header poll.h
5637 check_header sys/mman.h
5638 check_header sys/param.h
5639 check_header sys/resource.h
5640 check_header sys/select.h
5641 check_header sys/time.h
5642 check_header sys/un.h
5643 check_header termios.h
5644 check_header unistd.h
5645 check_header valgrind/valgrind.h
5646 check_header vdpau/vdpau.h
5647 check_header vdpau/vdpau_x11.h
5648 check_header VideoDecodeAcceleration/VDADecoder.h
5649 check_header VideoToolbox/VideoToolbox.h
5650 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5651 enabled videotoolbox && check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferColorPrimaries_ITU_R_2020 -framework CoreVideo
5652 check_header windows.h
5653 check_header X11/extensions/XvMClib.h
5654 check_header asm/types.h
5655
5656 # it seems there are versions of clang in some distros that try to use the
5657 # gcc headers, which explodes for stdatomic
5658 # so we also check that atomics actually work here
5659 check_builtin stdatomic_h stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0)"
5660
5661 check_lib "windows.h shellapi.h" CommandLineToArgvW   -lshell32
5662 check_lib "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
5663 check_lib "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
5664
5665 check_lib "CoreServices/CoreServices.h" UTGetOSTypeFromString "-framework CoreServices"
5666
5667 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5668
5669 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5670 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5671 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5672 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5673 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5674
5675 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
5676 check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
5677 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
5678 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
5679 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5680 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5681 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
5682 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
5683
5684 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5685
5686 check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt
5687
5688 if ! disabled w32threads && ! enabled pthreads; then
5689     check_func_headers "windows.h process.h" _beginthreadex &&
5690         enable w32threads || disable w32threads
5691     if ! enabled w32threads && enabled winrt; then
5692         check_func_headers "windows.h" CreateThread &&
5693             enable w32threads || disable w32threads
5694     fi
5695 fi
5696
5697 # check for some common methods of building with pthread support
5698 # do this before the optional library checks as some of them require pthreads
5699 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5700     enable pthreads
5701     if check_func pthread_join -pthread && check_func pthread_create -pthread; then
5702         add_cflags -pthread
5703         add_extralibs -pthread
5704     elif check_func pthread_join -pthreads && check_func pthread_create -pthreads; then
5705         add_cflags -pthreads
5706         add_extralibs -pthreads
5707     elif check_func pthread_join -ldl -pthread && check_func pthread_create -ldl -pthread; then
5708         add_cflags -ldl -pthread
5709         add_extralibs -ldl -pthread
5710     elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
5711         add_extralibs -lpthreadGC2
5712     elif check_lib pthread.h pthread_join -lpthread && check_lib pthread.h pthread_create -lpthread; then
5713         :
5714     elif ! check_func pthread_join && ! check_func pthread_create; then
5715         disable pthreads
5716     fi
5717     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5718 fi
5719
5720
5721 if enabled pthreads; then
5722   check_func pthread_cancel
5723 fi
5724
5725 enabled pthreads &&
5726     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)"
5727
5728 disabled  zlib || check_lib  zlib.h      zlibVersion    -lz    || disable  zlib
5729 disabled bzlib || check_lib bzlib.h BZ2_bzlibVersion    -lbz2  || disable bzlib
5730 disabled  lzma || check_lib  lzma.h lzma_version_number -llzma || disable lzma
5731
5732 check_lib math.h sin -lm && LIBM="-lm"
5733 disabled crystalhd || check_lib "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd || disable crystalhd
5734
5735 atan2f_args=2
5736 copysign_args=2
5737 hypot_args=2
5738 ldexpf_args=2
5739 powf_args=2
5740
5741 for func in $MATH_FUNCS; do
5742     eval check_mathfunc $func \${${func}_args:-1}
5743 done
5744
5745 for func in $COMPLEX_FUNCS; do
5746     eval check_complexfunc $func \${${func}_args:-1}
5747 done
5748
5749 # these are off by default, so fail if requested and not available
5750 enabled avfoundation_indev && { check_header_objcc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
5751 enabled avfoundation_indev && { check_lib CoreGraphics/CoreGraphics.h CGGetActiveDisplayList -framework CoreGraphics ||
5752                                 check_lib ApplicationServices/ApplicationServices.h CGGetActiveDisplayList -framework ApplicationServices; }
5753 enabled cuda              && check_header cuda.h # this is not a dependency
5754 enabled cuvid             && { enabled cuda ||
5755                                die "ERROR: CUVID requires CUDA"; }
5756 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5757 enabled coreimage_filter  && { check_header_objcc QuartzCore/CoreImage.h || disable coreimage_filter; }
5758 enabled coreimagesrc_filter && { check_header_objcc QuartzCore/CoreImage.h || disable coreimagesrc_filter; }
5759 enabled decklink          && { { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; } &&
5760                                { check_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a060100" || die "ERROR: Decklink API version must be >= 10.6.1."; } }
5761 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
5762 enabled gmp               && require gmp gmp.h mpz_export -lgmp
5763 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
5764 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads &&
5765                                check_lib "dlfcn.h" dlopen -ldl || die "ERROR: jni not found"; }
5766 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
5767 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5768 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
5769 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
5770 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
5771 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5772                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
5773                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5774 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
5775 enabled libfdk_aac        && { use_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5776                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5777                                  warn "using libfdk without pkg-config"; } }
5778 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"
5779 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_libs
5780 enabled fontconfig        && enable libfontconfig
5781 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
5782 enabled libfreetype       && require_libfreetype
5783 enabled libfribidi        && require_pkg_config fribidi fribidi.h fribidi_version_info
5784 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
5785 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5786                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
5787                                done || die "ERROR: libgsm not found"; }
5788 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
5789 enabled libkvazaar        && require_pkg_config "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
5790 enabled libmfx            && require_pkg_config libmfx "mfx/mfxvideo.h" MFXInit
5791 enabled libmodplug        && require_pkg_config libmodplug libmodplug/modplug.h ModPlug_Load
5792 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5793 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
5794 enabled libnpp            && require libnpp npp.h nppGetLibVersion -lnppi -lnppc
5795 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5796 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5797 enabled libopencv         && { check_header opencv2/core/core_c.h &&
5798                                { use_pkg_config opencv opencv2/core/core_c.h cvCreateImageHeader ||
5799                                  require opencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
5800                                require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader; }
5801 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
5802 enabled libopenjpeg       && { { check_lib openjpeg-2.1/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5803                                check_lib openjpeg-2.1/openjpeg.h opj_version -lopenjp2 ||
5804                                { check_lib openjpeg-2.0/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5805                                { check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5806                                { check_lib openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5807                                die "ERROR: libopenjpeg not found"; }
5808 enabled libopenmpt        && require_pkg_config "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create
5809 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
5810 enabled libpulse          && require_pkg_config libpulse pulse/pulseaudio.h pa_context_new
5811 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
5812 enabled librubberband     && require_pkg_config "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new
5813 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
5814 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
5815 enabled libsmbclient      && { use_pkg_config smbclient libsmbclient.h smbc_init ||
5816                                require smbclient libsmbclient.h smbc_init -lsmbclient; }
5817 enabled libsnappy         && require snappy snappy-c.h snappy_compress -lsnappy
5818 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr && LIBSOXR="-lsoxr"
5819 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
5820 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
5821 enabled libtesseract      && require_pkg_config tesseract tesseract/capi.h TessBaseAPICreate
5822 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
5823 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
5824                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
5825                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
5826 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
5827 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
5828 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
5829 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
5830
5831 enabled libvpx            && {
5832     enabled libvpx_vp8_decoder && {
5833         use_pkg_config "vpx >= 0.9.1" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
5834             check_lib "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
5835                 die "ERROR: libvpx decoder version must be >=0.9.1";
5836     }
5837     enabled libvpx_vp8_encoder && {
5838         use_pkg_config "vpx >= 0.9.7" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
5839             check_lib "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
5840                 die "ERROR: libvpx encoder version must be >=0.9.7";
5841     }
5842     enabled libvpx_vp9_decoder && {
5843         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
5844             check_lib "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx ||
5845                 disable libvpx_vp9_decoder;
5846     }
5847     enabled libvpx_vp9_encoder && {
5848         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
5849             check_lib "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx ||
5850                 disable libvpx_vp9_encoder;
5851     }
5852     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
5853         die "libvpx enabled but no supported decoders found"
5854     fi
5855 }
5856
5857 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
5858 enabled libwebp           && {
5859     enabled libwebp_encoder      && require_pkg_config "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
5860     enabled libwebp_anim_encoder && { use_pkg_config "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit || disable libwebp_anim_encoder; } }
5861 enabled libx264           && { use_pkg_config x264 "stdint.h x264.h" x264_encoder_encode ||
5862                                { require libx264 "stdint.h x264.h" x264_encoder_encode -lx264 &&
5863                                  warn "using libx264 without pkg-config"; } } &&
5864                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
5865                                die "ERROR: libx264 must be installed and version must be >= 0.118."; } &&
5866                              { check_cpp_condition x264.h "X264_MPEG2" &&
5867                                enable libx262; }
5868 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
5869                              { check_cpp_condition x265.h "X265_BUILD >= 68" ||
5870                                die "ERROR: libx265 version must be >= 68."; }
5871 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode -lxavs
5872 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
5873 enabled libzimg           && require_pkg_config "zimg >= 2.3.0" zimg.h zimg_get_api_version
5874 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
5875 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi &&
5876                              { check_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
5877                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
5878 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
5879 enabled mmal              && { check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
5880                                 { ! enabled cross_compile && {
5881                                     add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline ;
5882                                     add_extralibs -L/opt/vc/lib/ -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ;
5883                                     check_lib interface/mmal/mmal.h mmal_port_connect ; }
5884                                 check_lib interface/mmal/mmal.h mmal_port_connect ; } ||
5885                                die "ERROR: mmal not found"; }
5886 enabled mmal && check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"
5887
5888 enabled netcdf            && require_pkg_config netcdf netcdf.h nc_inq_libvers
5889 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
5890                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
5891                                die "ERROR: openal not found"; } &&
5892                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
5893                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
5894 enabled opencl            && { check_lib OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
5895                                check_lib CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
5896                                die "ERROR: opencl not found"; } &&
5897                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
5898                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
5899                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
5900 enabled opengl            && { check_lib GL/glx.h glXGetProcAddress "-lGL" ||
5901                                check_lib windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
5902                                check_lib OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
5903                                check_lib ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
5904                                die "ERROR: opengl not found."
5905                              }
5906 enabled omx_rpi && enable omx
5907 enabled omx               && { check_header OMX_Core.h ||
5908                                 { ! enabled cross_compile && enabled omx_rpi && {
5909                                     add_cflags -isystem/opt/vc/include/IL ; }
5910                                 check_header OMX_Core.h ; } ||
5911                                die "ERROR: OpenMAX IL headers not found"; }
5912 enabled openssl           && { use_pkg_config openssl openssl/ssl.h OPENSSL_init_ssl ||
5913                                use_pkg_config openssl openssl/ssl.h SSL_library_init ||
5914                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
5915                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
5916                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
5917                                die "ERROR: openssl not found"; }
5918 enabled qtkit_indev      && { check_header_objcc QTKit/QTKit.h || disable qtkit_indev; }
5919
5920 # libdc1394 check
5921 if enabled libdc1394; then
5922     { require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new &&
5923         enable libdc1394_2; } ||
5924     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
5925         enable libdc1394_1; } ||
5926     die "ERROR: No version of libdc1394 found "
5927 fi
5928
5929 if enabled gcrypt; then
5930     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
5931     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
5932         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
5933         gcrypt_libs=$("${GCRYPT_CONFIG}" --libs)
5934         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_libs ||
5935             die "ERROR: gcrypt not found"
5936         add_cflags $gcrypt_cflags && add_extralibs $gcrypt_libs
5937     else
5938         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
5939     fi
5940 fi
5941
5942 disabled sdl && disable sdl2
5943 if ! disabled sdl2; then
5944     SDL2_CONFIG="${cross_prefix}sdl2-config"
5945     if check_pkg_config sdl2 SDL_events.h SDL_PollEvent; then
5946         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
5947         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
5948         check_func SDL_Init $sdl2_libs $sdl2_cflags && enable sdl2
5949     else
5950       if "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
5951         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
5952         sdl2_libs=$("${SDL2_CONFIG}" --libs)
5953         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
5954         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
5955         check_func SDL_Init $sdl2_libs $sdl2_cflags && enable sdl2
5956       fi
5957     fi
5958     if test $target_os = "mingw32"; then
5959         sdl2_libs="$sdl2_libs -mconsole"
5960     fi
5961 fi
5962 enabled sdl2 && enable sdl && add_cflags $sdl2_cflags && add_extralibs $sdl2_libs
5963
5964 disabled securetransport || { check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5965     check_lib "Security/SecureTransport.h Security/Security.h" "SSLCreateContext SecItemImport" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5966     enable securetransport; }
5967
5968 disabled schannel || { check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
5969                        check_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" && enable schannel && add_extralibs -lsecur32; }
5970
5971 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
5972 enabled makeinfo \
5973     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
5974     && enable makeinfo_html || disable makeinfo_html
5975 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
5976 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
5977 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
5978 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
5979
5980 check_header linux/fb.h
5981 check_header linux/videodev.h
5982 check_header linux/videodev2.h
5983 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5984
5985 check_header sys/videoio.h
5986 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5987
5988 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
5989 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
5990 # w32api 3.12 had it defined wrong
5991 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
5992
5993 check_type "dshow.h" IBaseFilter
5994
5995 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
5996 { check_header dev/bktr/ioctl_meteor.h &&
5997   check_header dev/bktr/ioctl_bt848.h; } ||
5998 { check_header machine/ioctl_meteor.h &&
5999   check_header machine/ioctl_bt848.h; } ||
6000 { check_header dev/video/meteor/ioctl_meteor.h &&
6001   check_header dev/video/bktr/ioctl_bt848.h; } ||
6002 check_header dev/ic/bt8xx.h
6003
6004 check_header sndio.h
6005 if check_struct sys/soundcard.h audio_buf_info bytes; then
6006     enable_safe sys/soundcard.h
6007 else
6008     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
6009     #include <sys/soundcard.h>
6010     audio_buf_info abc;
6011 EOF
6012 fi
6013 check_header soundcard.h
6014
6015 enabled_any alsa_indev alsa_outdev &&
6016     check_lib alsa/asoundlib.h snd_pcm_htimestamp -lasound
6017
6018 enabled jack_indev && check_lib jack/jack.h jack_client_open -ljack &&
6019     check_func jack_port_get_latency_range -ljack
6020
6021 enabled_any sndio_indev sndio_outdev && check_lib sndio.h sio_open -lsndio
6022
6023 if enabled libcdio; then
6024     check_lib "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6025     check_lib "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6026     die "ERROR: No usable libcdio/cdparanoia found"
6027 fi
6028
6029 if ! disabled libxcb; then
6030     check_pkg_config "xcb >= 1.4" xcb/xcb.h xcb_connect || {
6031         enabled libxcb && die "ERROR: libxcb >= 1.4 not found";
6032     } && enable libxcb
6033
6034 if enabled libxcb; then
6035     disabled libxcb_shm || {
6036         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
6037             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
6038         } && check_header sys/shm.h && enable libxcb_shm; }
6039
6040     disabled libxcb_xfixes || {
6041         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
6042             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
6043         } && enable libxcb_xfixes; }
6044
6045     disabled libxcb_shape || {
6046         check_pkg_config xcb-shape xcb/shape.h xcb_shape_get_rectangles || {
6047             enabled libxcb_shape && die "ERROR: libxcb_shape not found";
6048         } && enable libxcb_shape; }
6049
6050     add_cflags $xcb_cflags $xcb_shm_cflags $xcb_xfixes_cflags $xcb_shape_cflags
6051     add_extralibs $xcb_libs $xcb_shm_libs $xcb_xfixes_libs $xcb_shape_libs
6052 fi
6053 fi
6054
6055 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6056
6057 enabled dxva2api_h &&
6058     check_cc <<EOF && enable dxva2api_cobj
6059 #define _WIN32_WINNT 0x0600
6060 #define COBJMACROS
6061 #include <windows.h>
6062 #include <d3d9.h>
6063 #include <dxva2api.h>
6064 int main(void) { IDirectXVideoDecoder *o = NULL; IDirectXVideoDecoder_Release(o); return 0; }
6065 EOF
6066
6067 enabled vaapi &&
6068     check_lib va/va.h vaInitialize -lva ||
6069     disable vaapi
6070
6071 enabled vaapi &&
6072     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
6073     disable vaapi
6074
6075 enabled vaapi &&
6076     check_lib "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm &&
6077     enable vaapi_drm
6078
6079 enabled vdpau &&
6080     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
6081     disable vdpau
6082
6083 enabled_any vaapi vdpau && check_lib X11/Xlib.h XOpenDisplay -lX11 && enable xlib
6084
6085 enabled vaapi && enabled xlib &&
6086     check_lib "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 &&
6087     enable vaapi_x11
6088
6089 enabled vdpau && enabled xlib &&
6090     check_lib "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
6091     enable vdpau_x11
6092
6093 if enabled x86; then
6094     case $target_os in
6095         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6096             ;;
6097         *)
6098             disable cuda cuvid nvenc
6099             ;;
6100     esac
6101 else
6102     disable cuda cuvid nvenc
6103 fi
6104
6105 enabled nvenc &&
6106     check_cc -I$source_path <<EOF || disable nvenc
6107 #include "compat/nvenc/nvEncodeAPI.h"
6108 NV_ENCODE_API_FUNCTION_LIST flist;
6109 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6110 int main(void) { return 0; }
6111 EOF
6112
6113 # Funny iconv installations are not unusual, so check it after all flags have been set
6114 disabled iconv || check_func_headers iconv.h iconv || check_lib iconv.h iconv -liconv || disable iconv
6115
6116 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6117
6118 # add some useful compiler flags if supported
6119 check_cflags -Wdeclaration-after-statement
6120 check_cflags -Wall
6121 check_cflags -Wdisabled-optimization
6122 check_cflags -Wpointer-arith
6123 check_cflags -Wredundant-decls
6124 check_cflags -Wwrite-strings
6125 check_cflags -Wtype-limits
6126 check_cflags -Wundef
6127 check_cflags -Wmissing-prototypes
6128 check_cflags -Wno-pointer-to-int-cast
6129 check_cflags -Wstrict-prototypes
6130 check_cflags -Wempty-body
6131 enabled extra_warnings && check_cflags -Winline
6132 enabled extra_warnings && check_cflags -Wcast-qual
6133
6134 check_disable_warning(){
6135     warning_flag=-W${1#-Wno-}
6136     test_cflags $warning_flag && add_cflags $1
6137 }
6138
6139 check_disable_warning -Wno-parentheses
6140 check_disable_warning -Wno-switch
6141 check_disable_warning -Wno-format-zero-length
6142 check_disable_warning -Wno-pointer-sign
6143 check_disable_warning -Wno-unused-const-variable
6144
6145 # add some linker flags
6146 check_ldflags -Wl,--warn-common
6147 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6148 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
6149 enabled rpath && add_ldlibflags -Wl,-rpath,$libdir
6150 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6151
6152 # add some strip flags
6153 # -wN '..@*' is more selective than -x, but not available everywhere.
6154 check_stripflags -wN \'..@*\' || check_stripflags -x
6155
6156 enabled neon_clobber_test &&
6157     check_ldflags -Wl,--wrap,avcodec_open2              \
6158                   -Wl,--wrap,avcodec_decode_audio4      \
6159                   -Wl,--wrap,avcodec_decode_video2      \
6160                   -Wl,--wrap,avcodec_decode_subtitle2   \
6161                   -Wl,--wrap,avcodec_encode_audio2      \
6162                   -Wl,--wrap,avcodec_encode_video2      \
6163                   -Wl,--wrap,avcodec_encode_subtitle    \
6164                   -Wl,--wrap,avcodec_send_packet        \
6165                   -Wl,--wrap,avcodec_receive_packet     \
6166                   -Wl,--wrap,avcodec_send_frame         \
6167                   -Wl,--wrap,avcodec_receive_frame      \
6168                   -Wl,--wrap,swr_convert                \
6169                   -Wl,--wrap,avresample_convert ||
6170     disable neon_clobber_test
6171
6172 enabled xmm_clobber_test &&
6173     check_ldflags -Wl,--wrap,avcodec_open2              \
6174                   -Wl,--wrap,avcodec_decode_audio4      \
6175                   -Wl,--wrap,avcodec_decode_video2      \
6176                   -Wl,--wrap,avcodec_decode_subtitle2   \
6177                   -Wl,--wrap,avcodec_encode_audio2      \
6178                   -Wl,--wrap,avcodec_encode_video2      \
6179                   -Wl,--wrap,avcodec_encode_subtitle    \
6180                   -Wl,--wrap,avcodec_send_packet        \
6181                   -Wl,--wrap,avcodec_receive_packet     \
6182                   -Wl,--wrap,avcodec_send_frame         \
6183                   -Wl,--wrap,avcodec_receive_frame      \
6184                   -Wl,--wrap,swr_convert                \
6185                   -Wl,--wrap,avresample_convert         \
6186                   -Wl,--wrap,sws_scale ||
6187     disable xmm_clobber_test
6188
6189 check_ld "cc" <<EOF && enable proper_dce
6190 extern const int array[512];
6191 static inline int func(void) { return array[0]; }
6192 int main(void) { return 0; }
6193 EOF
6194
6195 if enabled proper_dce; then
6196     echo "X { local: *; };" > $TMPV
6197     if test_ldflags -Wl,${version_script},$TMPV; then
6198         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6199         check_cc <<EOF && enable symver_asm_label
6200 void ff_foo(void) __asm__ ("av_foo@VERSION");
6201 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6202 EOF
6203         check_cc <<EOF && enable symver_gnu_asm
6204 __asm__(".symver ff_foo,av_foo@VERSION");
6205 void ff_foo(void) {}
6206 EOF
6207     fi
6208 fi
6209
6210 if [ -z "$optflags" ]; then
6211     if enabled small; then
6212         optflags=$cflags_size
6213     elif enabled optimizations; then
6214         optflags=$cflags_speed
6215     else
6216         optflags=$cflags_noopt
6217     fi
6218 fi
6219
6220 check_optflags(){
6221     check_cflags "$@"
6222     enabled lto && check_ldflags "$@"
6223 }
6224
6225
6226 if enabled lto; then
6227     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6228     check_cflags  -flto
6229     check_ldflags -flto $cpuflags
6230     disable inline_asm_direct_symbol_refs
6231 fi
6232
6233 check_optflags $optflags
6234 check_optflags -fno-math-errno
6235 check_optflags -fno-signed-zeros
6236
6237 enabled ftrapv && check_cflags -ftrapv
6238
6239 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6240 int x;
6241 EOF
6242
6243
6244 if enabled icc; then
6245     # Just warnings, no remarks
6246     check_cflags -w1
6247     # -wd: Disable following warnings
6248     # 144, 167, 556: -Wno-pointer-sign
6249     # 188: enumerated type mixed with another type
6250     # 1292: attribute "foo" ignored
6251     # 1419: external declaration in primary source file
6252     # 10006: ignoring unknown option -fno-signed-zeros
6253     # 10148: ignoring unknown option -Wno-parentheses
6254     # 10156: ignoring option '-W'; no argument required
6255     # 13200: No EMMS instruction before call to function
6256     # 13203: No EMMS instruction before return from function
6257     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6258     # 11030: Warning unknown option --as-needed
6259     # 10156: ignoring option '-export'; no argument required
6260     check_ldflags -wd10156,11030
6261     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6262     enable ebp_available
6263     # The test above does not test linking
6264     enabled lto && disable symver_asm_label
6265     if enabled x86_32; then
6266         icc_version=$($cc -dumpversion)
6267         test ${icc_version%%.*} -ge 11 &&
6268             check_cflags -falign-stack=maintain-16-byte ||
6269             disable aligned_stack
6270     fi
6271 elif enabled ccc; then
6272     # disable some annoying warnings
6273     add_cflags -msg_disable bitnotint
6274     add_cflags -msg_disable mixfuncvoid
6275     add_cflags -msg_disable nonstandcast
6276     add_cflags -msg_disable unsupieee
6277 elif enabled gcc; then
6278     check_optflags -fno-tree-vectorize
6279     check_cflags -Werror=format-security
6280     check_cflags -Werror=implicit-function-declaration
6281     check_cflags -Werror=missing-prototypes
6282     check_cflags -Werror=return-type
6283     check_cflags -Werror=vla
6284     check_cflags -Wformat
6285     check_cflags -fdiagnostics-color=auto
6286     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6287 elif enabled llvm_gcc; then
6288     check_cflags -mllvm -stack-alignment=16
6289 elif enabled clang; then
6290     check_cflags -mllvm -stack-alignment=16
6291     check_cflags -mstack-alignment=16
6292     check_cflags -Qunused-arguments
6293     check_cflags -Werror=implicit-function-declaration
6294     check_cflags -Werror=missing-prototypes
6295     check_cflags -Werror=return-type
6296 elif enabled cparser; then
6297     add_cflags -Wno-missing-variable-declarations
6298     add_cflags -Wno-empty-statement
6299 elif enabled armcc; then
6300     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6301     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6302     # 2523: use of inline assembly is deprecated
6303     add_cflags -W${armcc_opt},--diag_suppress=2523
6304     add_cflags -W${armcc_opt},--diag_suppress=1207
6305     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6306     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6307     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6308     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6309 elif enabled tms470; then
6310     add_cflags -pds=824 -pds=837
6311     disable inline_asm
6312 elif enabled pathscale; then
6313     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6314 elif enabled_any msvc icl; then
6315     enabled x86_32 && disable aligned_stack
6316     enabled_all x86_32 debug && add_cflags -Oy-
6317     enabled debug && add_ldflags -debug
6318     enable pragma_deprecated
6319     if enabled icl; then
6320         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6321         # (correctly) on icl 13.x.
6322         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6323             add_cflags -Qansi-alias
6324         # Some inline asm is not compilable in debug
6325         if enabled debug; then
6326             disable ebp_available
6327             disable ebx_available
6328         fi
6329     fi
6330     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6331     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
6332     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6333     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6334     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6335     # MSVC 2013 and newer can handle it fine.
6336     # If this declspec fails, force including stdlib.h before the restrict redefinition
6337     # happens in config.h.
6338     if [ $_restrict != restrict ]; then
6339         check_cc <<EOF || add_cflags -FIstdlib.h
6340 __declspec($_restrict) void* foo(int);
6341 EOF
6342     fi
6343     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6344     # Issue has been fixed in MSVC v19.00.24218.
6345     check_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6346         check_cflags -d2SSAOptimizer-
6347     # enable utf-8 source processing on VS2015 U2 and newer
6348     check_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6349         add_cflags -utf-8
6350 fi
6351
6352 for pfx in "" host_; do
6353     varname=${pfx%_}cc_type
6354     eval "type=\$$varname"
6355     if [ $type = "msvc" ]; then
6356         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6357 static inline int foo(int a) { return a; }
6358 EOF
6359     fi
6360 done
6361
6362 case $as_type in
6363     clang)
6364         add_asflags -Qunused-arguments
6365     ;;
6366 esac
6367
6368 case $ld_type in
6369     clang)
6370         check_ldflags -Qunused-arguments
6371     ;;
6372 esac
6373
6374 case $target_os in
6375     osf1)
6376         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
6377     ;;
6378     plan9)
6379         add_cppflags -Dmain=plan9_main
6380     ;;
6381 esac
6382
6383 enable frame_thread_encoder
6384
6385 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6386
6387 check_deps $CONFIG_LIST       \
6388            $CONFIG_EXTRA      \
6389            $HAVE_LIST         \
6390            $ALL_COMPONENTS    \
6391
6392 enabled threads && ! enabled pthreads && ! enabled atomics_native && die "non pthread threading without atomics not supported, try adding --enable-pthreads or --cpu=i486 or higher if you are on x86"
6393
6394
6395 if test $target_os = "haiku"; then
6396     disable memalign
6397     disable posix_memalign
6398 fi
6399
6400 enabled_all dxva2 dxva2api_cobj CoTaskMemFree &&
6401     prepend ffmpeg_libs $($ldflags_filter "-lole32") &&
6402     enable dxva2_lib
6403
6404 # add_dep lib dep
6405 # -> enable ${lib}_deps_${dep}
6406 # -> add $dep to ${lib}_deps only once
6407 add_dep() {
6408     lib=$1
6409     dep=$2
6410     enabled "${lib}_deps_${dep}" && return 0
6411     enable  "${lib}_deps_${dep}"
6412     prepend "${lib}_deps" $dep
6413 }
6414
6415 # merge deps lib components
6416 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
6417 merge_deps() {
6418     lib=$1
6419     shift
6420     for comp in $*; do
6421         enabled $comp || continue
6422         eval "dep=\"\$${comp}_deps\""
6423         for d in $dep; do
6424             add_dep $lib $d
6425         done
6426     done
6427 }
6428
6429 merge_deps libavfilter $FILTER_LIST
6430
6431 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6432
6433 for thread in $THREADS_LIST; do
6434     if enabled $thread; then
6435         test -n "$thread_type" &&
6436             die "ERROR: Only one thread type must be selected." ||
6437             thread_type="$thread"
6438     fi
6439 done
6440
6441 if disabled stdatomic_h; then
6442     if enabled atomics_gcc; then
6443         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6444     elif enabled atomics_win32; then
6445         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6446     elif enabled atomics_suncc; then
6447         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6448     elif enabled pthreads; then
6449         add_compat atomics/pthread/stdatomic.o
6450         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6451     else
6452         enabled threads && die "Threading is enabled, but no atomics are available"
6453         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6454     fi
6455 fi
6456
6457 # Check if requested libraries were found.
6458 for lib in $AUTODETECT_LIBS; do
6459     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6460 done
6461
6462 enabled zlib && add_cppflags -DZLIB_CONST
6463
6464 # conditional library dependencies, in linking order
6465 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6466 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6467 enabled aresample_filter    && prepend avfilter_deps "swresample"
6468 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6469 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6470 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6471 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6472 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6473 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6474 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6475 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6476 enabled pan_filter          && prepend avfilter_deps "swresample"
6477 enabled pp_filter           && prepend avfilter_deps "postproc"
6478 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6479 enabled resample_filter && prepend avfilter_deps "avresample"
6480 enabled sab_filter          && prepend avfilter_deps "swscale"
6481 enabled scale_filter    && prepend avfilter_deps "swscale"
6482 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6483 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6484 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6485 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6486 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6487 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6488 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6489 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6490 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6491
6492 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6493
6494 enabled opus_decoder    && prepend avcodec_deps "swresample"
6495
6496 expand_deps(){
6497     lib_deps=${1}_deps
6498     eval "deps=\$$lib_deps"
6499     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6500     unique $lib_deps
6501 }
6502
6503 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6504 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6505
6506 map 'expand_deps $v' $LIBRARY_LIST
6507
6508 license="LGPL version 2.1 or later"
6509 if enabled nonfree; then
6510     license="nonfree and unredistributable"
6511 elif enabled gplv3; then
6512     license="GPL version 3 or later"
6513 elif enabled lgplv3; then
6514     license="LGPL version 3 or later"
6515 elif enabled gpl; then
6516     license="GPL version 2 or later"
6517 fi
6518
6519 if test "$quiet" != "yes"; then
6520
6521 echo "install prefix            $prefix"
6522 echo "source path               $source_path"
6523 echo "C compiler                $cc"
6524 echo "C library                 $libc_type"
6525 if test "$host_cc" != "$cc"; then
6526     echo "host C compiler           $host_cc"
6527     echo "host C library            $host_libc_type"
6528 fi
6529 echo "ARCH                      $arch ($cpu)"
6530 if test "$build_suffix" != ""; then
6531     echo "build suffix              $build_suffix"
6532 fi
6533 if test "$progs_suffix" != ""; then
6534     echo "progs suffix              $progs_suffix"
6535 fi
6536 if test "$extra_version" != ""; then
6537     echo "version string suffix     $extra_version"
6538 fi
6539 echo "big-endian                ${bigendian-no}"
6540 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6541 if enabled x86; then
6542     echo "${yasmexe}                      ${yasm-no}"
6543     echo "MMX enabled               ${mmx-no}"
6544     echo "MMXEXT enabled            ${mmxext-no}"
6545     echo "3DNow! enabled            ${amd3dnow-no}"
6546     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6547     echo "SSE enabled               ${sse-no}"
6548     echo "SSSE3 enabled             ${ssse3-no}"
6549     echo "AESNI enabled             ${aesni-no}"
6550     echo "AVX enabled               ${avx-no}"
6551     echo "XOP enabled               ${xop-no}"
6552     echo "FMA3 enabled              ${fma3-no}"
6553     echo "FMA4 enabled              ${fma4-no}"
6554     echo "i686 features enabled     ${i686-no}"
6555     echo "CMOV is fast              ${fast_cmov-no}"
6556     echo "EBX available             ${ebx_available-no}"
6557     echo "EBP available             ${ebp_available-no}"
6558 fi
6559 if enabled aarch64; then
6560     echo "NEON enabled              ${neon-no}"
6561     echo "VFP enabled               ${vfp-no}"
6562 fi
6563 if enabled arm; then
6564     echo "ARMv5TE enabled           ${armv5te-no}"
6565     echo "ARMv6 enabled             ${armv6-no}"
6566     echo "ARMv6T2 enabled           ${armv6t2-no}"
6567     echo "VFP enabled               ${vfp-no}"
6568     echo "NEON enabled              ${neon-no}"
6569     echo "THUMB enabled             ${thumb-no}"
6570 fi
6571 if enabled mips; then
6572     echo "MIPS FPU enabled          ${mipsfpu-no}"
6573     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6574     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6575     echo "MIPS MSA enabled          ${msa-no}"
6576     echo "LOONGSON MMI enabled      ${mmi-no}"
6577 fi
6578 if enabled ppc; then
6579     echo "AltiVec enabled           ${altivec-no}"
6580     echo "VSX enabled               ${vsx-no}"
6581     echo "POWER8 enabled            ${power8-no}"
6582     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6583     echo "dcbzl available           ${dcbzl-no}"
6584 fi
6585 echo "debug symbols             ${debug-no}"
6586 echo "strip symbols             ${stripping-no}"
6587 echo "optimize for size         ${small-no}"
6588 echo "optimizations             ${optimizations-no}"
6589 echo "static                    ${static-no}"
6590 echo "shared                    ${shared-no}"
6591 echo "postprocessing support    ${postproc-no}"
6592 echo "network support           ${network-no}"
6593 echo "threading support         ${thread_type-no}"
6594 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6595 echo "texi2html enabled         ${texi2html-no}"
6596 echo "perl enabled              ${perl-no}"
6597 echo "pod2man enabled           ${pod2man-no}"
6598 echo "makeinfo enabled          ${makeinfo-no}"
6599 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6600 test -n "$random_seed" &&
6601     echo "random seed               ${random_seed}"
6602 echo
6603
6604 echo "External libraries:"
6605 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_in_columns
6606 echo
6607
6608 echo "External libraries providing hardware acceleration:"
6609 print_enabled '' $HWACCEL_LIBRARY_LIST | print_in_columns
6610 echo
6611
6612 echo "Libraries:"
6613 print_enabled '' $LIBRARY_LIST | print_in_columns
6614 echo
6615
6616 echo "Programs:"
6617 print_enabled '' $PROGRAM_LIST | print_in_columns
6618 echo
6619
6620 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6621     echo "Enabled ${type}s:"
6622     eval list=\$$(toupper $type)_LIST
6623     print_enabled '_*' $list | print_in_columns
6624     echo
6625 done
6626
6627 echo "License: $license"
6628
6629 echo "Creating configuration files ..."
6630
6631 fi # test "$quiet" != "yes"
6632
6633 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6634
6635 enabled stripping || strip="echo skipping strip"
6636
6637 config_files="$TMPH config.mak doc/config.texi"
6638
6639 cat > config.mak <<EOF
6640 # Automatically generated by configure - do not modify!
6641 ifndef FFMPEG_CONFIG_MAK
6642 FFMPEG_CONFIG_MAK=1
6643 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6644 prefix=$prefix
6645 LIBDIR=\$(DESTDIR)$libdir
6646 SHLIBDIR=\$(DESTDIR)$shlibdir
6647 INCDIR=\$(DESTDIR)$incdir
6648 BINDIR=\$(DESTDIR)$bindir
6649 DATADIR=\$(DESTDIR)$datadir
6650 DOCDIR=\$(DESTDIR)$docdir
6651 MANDIR=\$(DESTDIR)$mandir
6652 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6653 INSTALL_NAME_DIR=$install_name_dir
6654 SRC_PATH=$source_path
6655 SRC_LINK=$source_link
6656 ifndef MAIN_MAKEFILE
6657 SRC_PATH:=\$(SRC_PATH:.%=..%)
6658 endif
6659 CC_IDENT=$cc_ident
6660 ARCH=$arch
6661 INTRINSICS=$intrinsics
6662 CC=$cc
6663 CXX=$cxx
6664 AS=$as
6665 OBJCC=$objcc
6666 LD=$ld
6667 DEPCC=$dep_cc
6668 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6669 DEPAS=$as
6670 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6671 YASM=$yasmexe
6672 DEPYASM=$yasmexe
6673 AR=$ar
6674 ARFLAGS=$arflags
6675 AR_O=$ar_o
6676 RANLIB=$ranlib
6677 STRIP=$strip
6678 CP=cp -p
6679 LN_S=$ln_s
6680 CPPFLAGS=$CPPFLAGS
6681 CFLAGS=$CFLAGS
6682 CXXFLAGS=$CXXFLAGS
6683 OBJCFLAGS=$OBJCFLAGS
6684 ASFLAGS=$ASFLAGS
6685 AS_C=$AS_C
6686 AS_O=$AS_O
6687 OBJCC_C=$OBJCC_C
6688 OBJCC_E=$OBJCC_E
6689 OBJCC_O=$OBJCC_O
6690 CC_C=$CC_C
6691 CC_E=$CC_E
6692 CC_O=$CC_O
6693 CXX_C=$CXX_C
6694 CXX_O=$CXX_O
6695 LD_O=$LD_O
6696 LD_LIB=$LD_LIB
6697 LD_PATH=$LD_PATH
6698 DLLTOOL=$dlltool
6699 WINDRES=$windres
6700 DEPWINDRES=$dep_cc
6701 DOXYGEN=$doxygen
6702 LDFLAGS=$LDFLAGS
6703 LDEXEFLAGS=$LDEXEFLAGS
6704 LDLIBFLAGS=$LDLIBFLAGS
6705 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
6706 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
6707 YASMFLAGS=$YASMFLAGS
6708 BUILDSUF=$build_suffix
6709 PROGSSUF=$progs_suffix
6710 FULLNAME=$FULLNAME
6711 LIBPREF=$LIBPREF
6712 LIBSUF=$LIBSUF
6713 LIBNAME=$LIBNAME
6714 SLIBPREF=$SLIBPREF
6715 SLIBSUF=$SLIBSUF
6716 EXESUF=$EXESUF
6717 EXTRA_VERSION=$extra_version
6718 CCDEP=$CCDEP
6719 CXXDEP=$CXXDEP
6720 CCDEP_FLAGS=$CCDEP_FLAGS
6721 ASDEP=$ASDEP
6722 ASDEP_FLAGS=$ASDEP_FLAGS
6723 CC_DEPFLAGS=$CC_DEPFLAGS
6724 AS_DEPFLAGS=$AS_DEPFLAGS
6725 HOSTCC=$host_cc
6726 HOSTLD=$host_ld
6727 HOSTCFLAGS=$host_cflags
6728 HOSTCPPFLAGS=$host_cppflags
6729 HOSTEXESUF=$HOSTEXESUF
6730 HOSTLDFLAGS=$host_ldflags
6731 HOSTLIBS=$host_libs
6732 DEPHOSTCC=$host_cc
6733 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
6734 HOSTCCDEP=$HOSTCCDEP
6735 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
6736 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
6737 HOSTCC_C=$HOSTCC_C
6738 HOSTCC_O=$HOSTCC_O
6739 HOSTLD_O=$HOSTLD_O
6740 TARGET_EXEC=$target_exec $target_exec_args
6741 TARGET_PATH=$target_path
6742 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
6743 CFLAGS-ffplay=${sdl2_cflags}
6744 ZLIB=$($ldflags_filter -lz)
6745 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
6746 EXTRALIBS=$extralibs
6747 COMPAT_OBJS=$compat_objs
6748 EXEOBJS=$exeobjs
6749 INSTALL=$install
6750 LIBTARGET=${LIBTARGET}
6751 SLIBNAME=${SLIBNAME}
6752 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
6753 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
6754 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
6755 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
6756 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
6757 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
6758 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
6759 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
6760 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
6761 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
6762 NOREDZONE_FLAGS=$noredzone_flags
6763 EOF
6764
6765 get_version(){
6766     lcname=lib${1}
6767     name=$(toupper $lcname)
6768     file=$source_path/$lcname/version.h
6769     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
6770     enabled raise_major && eval ${name}_VERSION_MAJOR=$((${name}_VERSION_MAJOR+100))
6771     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
6772     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
6773     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
6774     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
6775 }
6776
6777 map 'get_version $v' $LIBRARY_LIST
6778
6779 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> config.mak' $LIBRARY_LIST
6780
6781 print_program_libs(){
6782     eval "program_libs=\$${1}_libs"
6783     eval echo "LIBS-${1}=${program_libs}" >> config.mak
6784 }
6785
6786 map 'print_program_libs $v' $PROGRAM_LIST
6787
6788 cat > $TMPH <<EOF
6789 /* Automatically generated by configure - do not modify! */
6790 #ifndef FFMPEG_CONFIG_H
6791 #define FFMPEG_CONFIG_H
6792 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
6793 #define FFMPEG_LICENSE "$(c_escape $license)"
6794 #define CONFIG_THIS_YEAR 2017
6795 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
6796 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
6797 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
6798 #define av_restrict $_restrict
6799 #define EXTERN_PREFIX "${extern_prefix}"
6800 #define EXTERN_ASM ${extern_prefix}
6801 #define BUILDSUF "$build_suffix"
6802 #define SLIBSUF "$SLIBSUF"
6803 #define HAVE_MMX2 HAVE_MMXEXT
6804 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
6805 EOF
6806
6807 test -n "$assert_level" &&
6808     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
6809
6810 test -n "$malloc_prefix" &&
6811     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
6812
6813 if enabled yasm; then
6814     append config_files $TMPASM
6815     printf '' >$TMPASM
6816 fi
6817
6818 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
6819
6820
6821 mkdir -p doc
6822 mkdir -p tests
6823 mkdir -p tests/api
6824 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
6825
6826 print_config ARCH_   "$config_files" $ARCH_LIST
6827 print_config HAVE_   "$config_files" $HAVE_LIST
6828 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
6829                                      $CONFIG_EXTRA      \
6830                                      $ALL_COMPONENTS    \
6831
6832 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
6833 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
6834
6835 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
6836 cp_if_changed $TMPH config.h
6837 touch .config
6838
6839 enabled yasm && cp_if_changed $TMPASM config.asm
6840
6841 cat > $TMPH <<EOF
6842 /* Generated by ffconf */
6843 #ifndef AVUTIL_AVCONFIG_H
6844 #define AVUTIL_AVCONFIG_H
6845 EOF
6846
6847 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
6848
6849 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
6850
6851 cp_if_changed $TMPH libavutil/avconfig.h
6852
6853 # generate the lists of enabled components
6854 print_enabled_components(){
6855     file=$1
6856     struct_name=$2
6857     name=$3
6858     shift 3
6859     echo "static const $struct_name *$name[] = {" > $TMPH
6860     for c in $*; do
6861         enabled $c && printf "    &ff_%s,\n" $c >> $TMPH
6862     done
6863     echo "    NULL };" >> $TMPH
6864     cp_if_changed $TMPH $file
6865 }
6866
6867 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
6868 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
6869
6870 if test -n "$WARNINGS"; then
6871     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
6872     enabled fatal_warnings && exit 1
6873 fi
6874
6875 # build pkg-config files
6876
6877 lib_version(){
6878     eval printf "\"lib${1}${build_suffix} >= \$LIB$(toupper ${1})_VERSION, \""
6879 }
6880
6881 pkgconfig_generate(){
6882     name=$1
6883     shortname=${name#lib}${build_suffix}
6884     comment=$2
6885     version=$3
6886     libs=$4
6887     requires=$(map 'lib_version $v' $(eval echo \$${name#lib}_deps))
6888     requires=${requires%, }
6889     enabled ${name#lib} || return 0
6890     mkdir -p $name
6891     cat <<EOF > $name/$name${build_suffix}.pc
6892 prefix=$prefix
6893 exec_prefix=\${prefix}
6894 libdir=$libdir
6895 includedir=$incdir
6896
6897 Name: $name
6898 Description: $comment
6899 Version: $version
6900 Requires: $(enabled shared || echo $requires)
6901 Requires.private: $(enabled shared && echo $requires)
6902 Conflicts:
6903 Libs: -L\${libdir} $(enabled rpath && echo "-Wl,-rpath,\${libdir}") -l${shortname} $(enabled shared || echo $libs)
6904 Libs.private: $(enabled shared && echo $libs)
6905 Cflags: -I\${includedir}
6906 EOF
6907
6908 mkdir -p doc/examples/pc-uninstalled
6909 includedir=${source_path}
6910 [ "$includedir" = . ] && includedir="\${pcfiledir}/../../.."
6911     cat <<EOF > doc/examples/pc-uninstalled/${name}-uninstalled.pc
6912 prefix=
6913 exec_prefix=
6914 libdir=\${pcfiledir}/../../../$name
6915 includedir=${includedir}
6916
6917 Name: $name
6918 Description: $comment
6919 Version: $version
6920 Requires: $requires
6921 Conflicts:
6922 Libs: -L\${libdir} -Wl,-rpath,\${libdir} -l${shortname} $(enabled shared || echo $libs)
6923 Cflags: -I\${includedir}
6924 EOF
6925 }
6926
6927 pkgconfig_generate libavutil     "FFmpeg utility library"               "$LIBAVUTIL_VERSION"     "$LIBRT $LIBM"
6928 pkgconfig_generate libavcodec    "FFmpeg codec library"                 "$LIBAVCODEC_VERSION"    "$extralibs"
6929 pkgconfig_generate libavformat   "FFmpeg container format library"      "$LIBAVFORMAT_VERSION"   "$extralibs"
6930 pkgconfig_generate libavdevice   "FFmpeg device handling library"       "$LIBAVDEVICE_VERSION"   "$extralibs"
6931 pkgconfig_generate libavfilter   "FFmpeg audio/video filtering library" "$LIBAVFILTER_VERSION"   "$extralibs"
6932 pkgconfig_generate libpostproc   "FFmpeg postprocessing library"        "$LIBPOSTPROC_VERSION"   ""
6933 pkgconfig_generate libavresample "Libav audio resampling library"       "$LIBAVRESAMPLE_VERSION" "$LIBM"
6934 pkgconfig_generate libswscale    "FFmpeg image rescaling library"       "$LIBSWSCALE_VERSION"    "$LIBM"
6935 pkgconfig_generate libswresample "FFmpeg audio resampling library"      "$LIBSWRESAMPLE_VERSION" "$LIBM $LIBSOXR"