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) printf '%s ' $v ;; esac"
 527     done
 528 }
 529
 530 filter_out(){
 531     pat=$1
 532     shift
 533     for v; do
 534         eval "case $v in $pat) ;; *) printf '%s ' $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_cflags_headers(){
 832     append CFLAGS_HEADERS $($cflags_filter "$@")
 833 }
 834
 835 add_cxxflags(){
 836     append CXXFLAGS $($cflags_filter "$@")
 837 }
 838
 839 add_asflags(){
 840     append ASFLAGS $($asflags_filter "$@")
 841 }
 842
 843 add_objcflags(){
 844     append OBJCFLAGS $($objcflags_filter "$@")
 845 }
 846
 847 add_ldflags(){
 848     append LDFLAGS $($ldflags_filter "$@")
 849 }
 850
 851 add_ldexeflags(){
 852     append LDEXEFLAGS $($ldflags_filter "$@")
 853 }
 854
 855 add_ldlibflags(){
 856     append LDLIBFLAGS $($ldflags_filter "$@")
 857 }
 858
 859 add_stripflags(){
 860     append ASMSTRIPFLAGS "$@"
 861 }
 862
 863 add_extralibs(){
 864     prepend extralibs $($ldflags_filter "$@")
 865 }
 866
 867 add_host_cppflags(){
 868     append host_cppflags "$@"
 869 }
 870
 871 add_host_cflags(){
 872     append host_cflags $($host_cflags_filter "$@")
 873 }
 874
 875 add_host_ldflags(){
 876     append host_ldflags $($host_ldflags_filter "$@")
 877 }
 878
 879 add_compat(){
 880     append compat_objs $1
 881     shift
 882     map 'add_cppflags -D$v' "$@"
 883 }
 884
 885 check_cmd(){
 886     log "$@"
 887     "$@" >> $logfile 2>&1
 888 }
 889
 890 check_stat(){
 891     log check_stat "$@"
 892     stat "$1" >> $logfile 2>&1
 893 }
 894
 895 cc_o(){
 896     eval printf '%s\\n' $CC_O
 897 }
 898
 899 cc_e(){
 900     eval printf '%s\\n' $CC_E
 901 }
 902
 903 check_cc(){
 904     log check_cc "$@"
 905     cat > $TMPC
 906     log_file $TMPC
 907     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 908 }
 909
 910 check_cxx(){
 911     log check_cxx "$@"
 912     cat > $TMPCPP
 913     log_file $TMPCPP
 914     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 915 }
 916
 917 check_objcc(){
 918     log check_objcc "$@"
 919     cat > $TMPM
 920     log_file $TMPM
 921     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
 922 }
 923
 924 check_cpp(){
 925     log check_cpp "$@"
 926     cat > $TMPC
 927     log_file $TMPC
 928     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 929 }
 930
 931 as_o(){
 932     eval printf '%s\\n' $AS_O
 933 }
 934
 935 check_as(){
 936     log check_as "$@"
 937     cat > $TMPS
 938     log_file $TMPS
 939     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 940 }
 941
 942 check_inline_asm(){
 943     log check_inline_asm "$@"
 944     name="$1"
 945     code="$2"
 946     shift 2
 947     disable $name
 948     check_cc "$@" <<EOF && enable $name
 949 void foo(void){ __asm__ volatile($code); }
 950 EOF
 951 }
 952
 953 check_inline_asm_flags(){
 954     log check_inline_asm_flags "$@"
 955     name="$1"
 956     code="$2"
 957     flags=''
 958     shift 2
 959     while [ "$1" != "" ]; do
 960       append flags $1
 961       shift
 962     done;
 963     disable $name
 964     cat > $TMPC <<EOF
 965 void foo(void){ __asm__ volatile($code); }
 966 EOF
 967     log_file $TMPC
 968     check_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
 969     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
 970 }
 971
 972 check_insn(){
 973     log check_insn "$@"
 974     check_inline_asm ${1}_inline "\"$2\""
 975     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 976 }
 977
 978 check_yasm(){
 979     log check_yasm "$@"
 980     echo "$1" > $TMPS
 981     log_file $TMPS
 982     shift 1
 983     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
 984 }
 985
 986 ld_o(){
 987     eval printf '%s\\n' $LD_O
 988 }
 989
 990 check_ld(){
 991     log check_ld "$@"
 992     type=$1
 993     shift 1
 994     flags=$(filter_out '-l*|*.so' $@)
 995     libs=$(filter '-l*|*.so' $@)
 996     check_$type $($cflags_filter $flags) || return
 997     flags=$($ldflags_filter $flags)
 998     libs=$($ldflags_filter $libs)
 999     check_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1000 }
1001
1002 print_include(){
1003     hdr=$1
1004     test "${hdr%.h}" = "${hdr}" &&
1005         echo "#include $hdr"    ||
1006         echo "#include <$hdr>"
1007 }
1008
1009 check_code(){
1010     log check_code "$@"
1011     check=$1
1012     headers=$2
1013     code=$3
1014     shift 3
1015     {
1016         for hdr in $headers; do
1017             print_include $hdr
1018         done
1019         echo "int main(void) { $code; return 0; }"
1020     } | check_$check "$@"
1021 }
1022
1023 check_cppflags(){
1024     log check_cppflags "$@"
1025     check_cpp "$@" <<EOF && append CPPFLAGS "$@"
1026 int x;
1027 EOF
1028 }
1029
1030 test_cflags(){
1031     log test_cflags "$@"
1032     set -- $($cflags_filter "$@")
1033     check_cc "$@" <<EOF
1034 int x;
1035 EOF
1036 }
1037
1038 check_cflags(){
1039     log check_cflags "$@"
1040     test_cflags "$@" && add_cflags "$@"
1041 }
1042
1043 check_cxxflags(){
1044     log check_cxxflags "$@"
1045     set -- $($cflags_filter "$@")
1046     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
1047 int x;
1048 EOF
1049 }
1050
1051 test_objcflags(){
1052     log test_objcflags "$@"
1053     set -- $($objcflags_filter "$@")
1054     check_objcc "$@" <<EOF
1055 int x;
1056 EOF
1057 }
1058
1059 check_objcflags(){
1060     log check_objcflags "$@"
1061     test_objcflags "$@" && add_objcflags "$@"
1062 }
1063
1064 test_ldflags(){
1065     log test_ldflags "$@"
1066     check_ld "cc" "$@" <<EOF
1067 int main(void){ return 0; }
1068 EOF
1069 }
1070
1071 check_ldflags(){
1072     log check_ldflags "$@"
1073     test_ldflags "$@" && add_ldflags "$@"
1074 }
1075
1076 test_stripflags(){
1077     log test_stripflags "$@"
1078     # call check_cc to get a fresh TMPO
1079     check_cc <<EOF
1080 int main(void) { return 0; }
1081 EOF
1082     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1083 }
1084
1085 check_stripflags(){
1086     log check_stripflags "$@"
1087     test_stripflags "$@" && add_stripflags "$@"
1088 }
1089
1090 check_header(){
1091     log check_header "$@"
1092     header=$1
1093     shift
1094     disable_safe $header
1095     check_cpp "$@" <<EOF && enable_safe $header
1096 #include <$header>
1097 int x;
1098 EOF
1099 }
1100
1101 check_header_objcc(){
1102     log check_header_objcc "$@"
1103     rm -f -- "$TMPO"
1104     header=$1
1105     shift
1106     disable_safe $header
1107     {
1108        echo "#include <$header>"
1109        echo "int main(void) { return 0; }"
1110     } | check_objcc && check_stat "$TMPO" && enable_safe $headers
1111 }
1112
1113 check_func(){
1114     log check_func "$@"
1115     func=$1
1116     shift
1117     disable $func
1118     check_ld "cc" "$@" <<EOF && enable $func
1119 extern int $func();
1120 int main(void){ $func(); }
1121 EOF
1122 }
1123
1124 check_complexfunc(){
1125     log check_complexfunc "$@"
1126     func=$1
1127     narg=$2
1128     shift 2
1129     test $narg = 2 && args="f, g" || args="f * I"
1130     disable $func
1131     check_ld "cc" "$@" <<EOF && enable $func
1132 #include <complex.h>
1133 #include <math.h>
1134 float foo(complex float f, complex float g) { return $func($args); }
1135 int main(void){ return (int) foo; }
1136 EOF
1137 }
1138
1139 check_mathfunc(){
1140     log check_mathfunc "$@"
1141     func=$1
1142     narg=$2
1143     shift 2
1144     test $narg = 2 && args="f, g" || args="f"
1145     disable $func
1146     check_ld "cc" "$@" <<EOF && enable $func
1147 #include <math.h>
1148 float foo(float f, float g) { return $func($args); }
1149 int main(void){ return (int) foo; }
1150 EOF
1151 }
1152
1153 check_func_headers(){
1154     log check_func_headers "$@"
1155     headers=$1
1156     funcs=$2
1157     shift 2
1158     {
1159         for hdr in $headers; do
1160             print_include $hdr
1161         done
1162         echo "#include <stdint.h>"
1163         for func in $funcs; do
1164             echo "long check_$func(void) { return (long) $func; }"
1165         done
1166         echo "int main(void) { int ret = 0;"
1167         # LTO could optimize out the test functions without this
1168         for func in $funcs; do
1169             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1170         done
1171         echo "return ret; }"
1172     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1173 }
1174
1175 check_class_headers_cpp(){
1176     log check_class_headers_cpp "$@"
1177     headers=$1
1178     classes=$2
1179     shift 2
1180     {
1181         for hdr in $headers; do
1182             echo "#include <$hdr>"
1183         done
1184         echo "int main(void) { "
1185         i=1
1186         for class in $classes; do
1187             echo "$class obj$i;"
1188             i=$(expr $i + 1)
1189         done
1190         echo "return 0; }"
1191     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1192 }
1193
1194 check_cpp_condition(){
1195     log check_cpp_condition "$@"
1196     header=$1
1197     condition=$2
1198     shift 2
1199     check_cpp "$@" <<EOF
1200 #include <$header>
1201 #if !($condition)
1202 #error "unsatisfied condition: $condition"
1203 #endif
1204 EOF
1205 }
1206
1207 test_cflags_cc(){
1208     log test_cflags_cc "$@"
1209     flags=$1
1210     header=$2
1211     condition=$3
1212     shift 3
1213     set -- $($cflags_filter "$flags")
1214     check_cc "$@" <<EOF
1215 #include <$header>
1216 #if !($condition)
1217 #error "unsatisfied condition: $condition"
1218 #endif
1219 EOF
1220 }
1221
1222 check_lib(){
1223     log check_lib "$@"
1224     headers="$1"
1225     funcs="$2"
1226     shift 2
1227     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1228 }
1229
1230 check_lib_cpp(){
1231     log check_lib_cpp "$@"
1232     headers="$1"
1233     classes="$2"
1234     shift 2
1235     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1236 }
1237
1238 check_pkg_config(){
1239     log check_pkg_config "$@"
1240     pkg_version="$1"
1241     pkg="${1%% *}"
1242     headers="$2"
1243     funcs="$3"
1244     shift 3
1245     check_cmd $pkg_config --exists --print-errors $pkg_version || return
1246     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1247     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1248     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1249         set_safe "${pkg}_cflags"    $pkg_cflags &&
1250         set_safe "${pkg}_extralibs" $pkg_libs
1251 }
1252
1253 check_exec(){
1254     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1255 }
1256
1257 check_exec_crash(){
1258     log check_exec_crash "$@"
1259     code=$(cat)
1260
1261     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1262     # are safe but may not be available everywhere.  Thus we use
1263     # raise(SIGTERM) instead.  The check is run in a subshell so we
1264     # can redirect the "Terminated" message from the shell.  SIGBUS
1265     # is not defined by standard C so it is used conditionally.
1266
1267     (check_exec "$@") >> $logfile 2>&1 <<EOF
1268 #include <signal.h>
1269 static void sighandler(int sig){
1270     raise(SIGTERM);
1271 }
1272 int foo(void){
1273     $code
1274 }
1275 int (*func_ptr)(void) = foo;
1276 int main(void){
1277     signal(SIGILL, sighandler);
1278     signal(SIGFPE, sighandler);
1279     signal(SIGSEGV, sighandler);
1280 #ifdef SIGBUS
1281     signal(SIGBUS, sighandler);
1282 #endif
1283     return func_ptr();
1284 }
1285 EOF
1286 }
1287
1288 check_type(){
1289     log check_type "$@"
1290     headers=$1
1291     type=$2
1292     shift 2
1293     disable_safe "$type"
1294     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1295 }
1296
1297 check_struct(){
1298     log check_struct "$@"
1299     headers=$1
1300     struct=$2
1301     member=$3
1302     shift 3
1303     disable_safe "${struct}_${member}"
1304     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1305         enable_safe "${struct}_${member}"
1306 }
1307
1308 check_builtin(){
1309     log check_builtin "$@"
1310     name=$1
1311     headers=$2
1312     builtin=$3
1313     shift 3
1314     disable "$name"
1315     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1316 }
1317
1318 check_compile_assert(){
1319     log check_compile_assert "$@"
1320     name=$1
1321     headers=$2
1322     condition=$3
1323     shift 3
1324     disable "$name"
1325     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1326 }
1327
1328 require(){
1329     log require "$@"
1330     name_version="$1"
1331     headers="$2"
1332     func="$3"
1333     shift 3
1334     check_lib "$headers" $func "$@" || die "ERROR: $name_version not found"
1335 }
1336
1337 require_cpp(){
1338     name="$1"
1339     headers="$2"
1340     classes="$3"
1341     shift 3
1342     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1343 }
1344
1345 use_pkg_config(){
1346     log use_pkg_config "$@"
1347     pkg="$1"
1348     check_pkg_config "$@" || return 1
1349     add_cflags    $(get_safe "${pkg}_cflags")
1350     add_extralibs $(get_safe "${pkg}_extralibs")
1351 }
1352
1353 require_pkg_config(){
1354     use_pkg_config "$@" || die "ERROR: $pkg not found using pkg-config$pkg_config_fail_message"
1355 }
1356
1357 hostcc_e(){
1358     eval printf '%s\\n' $HOSTCC_E
1359 }
1360
1361 hostcc_o(){
1362     eval printf '%s\\n' $HOSTCC_O
1363 }
1364
1365 check_host_cc(){
1366     log check_host_cc "$@"
1367     cat > $TMPC
1368     log_file $TMPC
1369     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1370 }
1371
1372 check_host_cpp(){
1373     log check_host_cpp "$@"
1374     cat > $TMPC
1375     log_file $TMPC
1376     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1377 }
1378
1379 check_host_cppflags(){
1380     log check_host_cppflags "$@"
1381     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1382 int x;
1383 EOF
1384 }
1385
1386 check_host_cflags(){
1387     log check_host_cflags "$@"
1388     set -- $($host_cflags_filter "$@")
1389     check_host_cc "$@" <<EOF && append host_cflags "$@"
1390 int x;
1391 EOF
1392 }
1393
1394 check_host_cpp_condition(){
1395     log check_host_cpp_condition "$@"
1396     header=$1
1397     condition=$2
1398     shift 2
1399     check_host_cpp "$@" <<EOF
1400 #include <$header>
1401 #if !($condition)
1402 #error "unsatisfied condition: $condition"
1403 #endif
1404 EOF
1405 }
1406
1407 cp_if_changed(){
1408     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1409     mkdir -p "$(dirname $2)"
1410     cp -f "$1" "$2"
1411 }
1412
1413 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1414 # system-dependent things.
1415
1416 AVCODEC_COMPONENTS="
1417     bsfs
1418     decoders
1419     encoders
1420     hwaccels
1421     parsers
1422 "
1423
1424 AVDEVICE_COMPONENTS="
1425     indevs
1426     outdevs
1427 "
1428 AVFILTER_COMPONENTS="
1429     filters
1430 "
1431 AVFORMAT_COMPONENTS="
1432     demuxers
1433     muxers
1434     protocols
1435 "
1436
1437 AVRESAMPLE_COMPONENTS=""
1438 AVUTIL_COMPONENTS=""
1439
1440 COMPONENT_LIST="
1441     $AVCODEC_COMPONENTS
1442     $AVDEVICE_COMPONENTS
1443     $AVFILTER_COMPONENTS
1444     $AVFORMAT_COMPONENTS
1445     $AVRESAMPLE_COMPONENTS
1446     $AVUTIL_COMPONENTS
1447 "
1448
1449 EXAMPLE_LIST="
1450     avio_dir_cmd_example
1451     avio_reading_example
1452     decode_audio_example
1453     decode_video_example
1454     demuxing_decoding_example
1455     encode_audio_example
1456     encode_video_example
1457     extract_mvs_example
1458     filter_audio_example
1459     filtering_audio_example
1460     filtering_video_example
1461     http_multiclient_example
1462     metadata_example
1463     muxing_example
1464     qsvdec_example
1465     remuxing_example
1466     resampling_audio_example
1467     scaling_video_example
1468     transcode_aac_example
1469     transcoding_example
1470 "
1471 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1472     bzlib
1473     iconv
1474     libxcb
1475     libxcb_shm
1476     libxcb_shape
1477     libxcb_xfixes
1478     lzma
1479     schannel
1480     sdl
1481     sdl2
1482     securetransport
1483     xlib
1484     zlib
1485 "
1486
1487 EXTERNAL_LIBRARY_GPL_LIST="
1488     avisynth
1489     frei0r
1490     libcdio
1491     librubberband
1492     libvidstab
1493     libx264
1494     libx265
1495     libxavs
1496     libxvid
1497 "
1498
1499 EXTERNAL_LIBRARY_NONFREE_LIST="
1500     decklink
1501     libfdk_aac
1502     openssl
1503 "
1504
1505 EXTERNAL_LIBRARY_VERSION3_LIST="
1506     gmp
1507     libopencore_amrnb
1508     libopencore_amrwb
1509     libvo_amrwbenc
1510 "
1511
1512 EXTERNAL_LIBRARY_GPLV3_LIST="
1513     libsmbclient
1514 "
1515
1516 EXTERNAL_LIBRARY_LIST="
1517     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1518     $EXTERNAL_LIBRARY_GPL_LIST
1519     $EXTERNAL_LIBRARY_NONFREE_LIST
1520     $EXTERNAL_LIBRARY_VERSION3_LIST
1521     $EXTERNAL_LIBRARY_GPLV3_LIST
1522     chromaprint
1523     crystalhd
1524     gcrypt
1525     gnutls
1526     jni
1527     ladspa
1528     libass
1529     libbluray
1530     libbs2b
1531     libcaca
1532     libcelt
1533     libdc1394
1534     libflite
1535     libfontconfig
1536     libfreetype
1537     libfribidi
1538     libgme
1539     libgsm
1540     libiec61883
1541     libilbc
1542     libkvazaar
1543     libmodplug
1544     libmp3lame
1545     libnut
1546     libopencv
1547     libopenh264
1548     libopenjpeg
1549     libopenmpt
1550     libopus
1551     libpulse
1552     librtmp
1553     libschroedinger
1554     libshine
1555     libsmbclient
1556     libsnappy
1557     libsoxr
1558     libspeex
1559     libssh
1560     libtesseract
1561     libtheora
1562     libtwolame
1563     libv4l2
1564     libvorbis
1565     libvpx
1566     libwavpack
1567     libwebp
1568     libzimg
1569     libzmq
1570     libzvbi
1571     mediacodec
1572     netcdf
1573     openal
1574     opencl
1575     opengl
1576     videotoolbox
1577 "
1578 HWACCEL_AUTODETECT_LIBRARY_LIST="
1579     audiotoolbox
1580     cuda
1581     cuvid
1582     d3d11va
1583     dxva2
1584     nvenc
1585     vaapi
1586     vda
1587     vdpau
1588     videotoolbox_hwaccel
1589     xvmc
1590 "
1591
1592 HWACCEL_LIBRARY_NONFREE_LIST="
1593     libnpp
1594 "
1595
1596 HWACCEL_LIBRARY_LIST="
1597     $HWACCEL_AUTODETECT_LIBRARY_LIST
1598     $HWACCEL_LIBRARY_NONFREE_LIST
1599     libmfx
1600     mmal
1601     omx
1602 "
1603
1604 DOCUMENT_LIST="
1605     doc
1606     htmlpages
1607     manpages
1608     podpages
1609     txtpages
1610 "
1611
1612 FEATURE_LIST="
1613     ftrapv
1614     gray
1615     hardcoded_tables
1616     omx_rpi
1617     runtime_cpudetect
1618     safe_bitstream_reader
1619     shared
1620     small
1621     static
1622     swscale_alpha
1623 "
1624
1625 LIBRARY_LIST="
1626     avcodec
1627     avdevice
1628     avfilter
1629     avformat
1630     avresample
1631     avutil
1632     postproc
1633     swresample
1634     swscale
1635 "
1636
1637 LICENSE_LIST="
1638     gpl
1639     nonfree
1640     version3
1641 "
1642
1643 PROGRAM_LIST="
1644     ffplay
1645     ffprobe
1646     ffserver
1647     ffmpeg
1648 "
1649
1650 SUBSYSTEM_LIST="
1651     dct
1652     dwt
1653     error_resilience
1654     faan
1655     fast_unaligned
1656     fft
1657     lsp
1658     lzo
1659     mdct
1660     pixelutils
1661     network
1662     rdft
1663 "
1664
1665 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1666 CONFIG_LIST="
1667     $DOCUMENT_LIST
1668     $EXAMPLE_LIST
1669     $EXTERNAL_LIBRARY_LIST
1670     $HWACCEL_LIBRARY_LIST
1671     $FEATURE_LIST
1672     $LICENSE_LIST
1673     $LIBRARY_LIST
1674     $PROGRAM_LIST
1675     $SUBSYSTEM_LIST
1676     fontconfig
1677     memory_poisoning
1678     neon_clobber_test
1679     pic
1680     raise_major
1681     thumb
1682     valgrind_backtrace
1683     xmm_clobber_test
1684     $COMPONENT_LIST
1685 "
1686
1687 THREADS_LIST="
1688     pthreads
1689     os2threads
1690     w32threads
1691 "
1692
1693 ATOMICS_LIST="
1694     atomics_gcc
1695     atomics_suncc
1696     atomics_win32
1697 "
1698
1699 AUTODETECT_LIBS="
1700     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1701     $HWACCEL_AUTODETECT_LIBRARY_LIST
1702     $THREADS_LIST
1703 "
1704
1705 ARCH_LIST="
1706     aarch64
1707     alpha
1708     arm
1709     avr32
1710     avr32_ap
1711     avr32_uc
1712     bfin
1713     ia64
1714     m68k
1715     mips
1716     mips64
1717     parisc
1718     ppc
1719     ppc64
1720     s390
1721     sh4
1722     sparc
1723     sparc64
1724     tilegx
1725     tilepro
1726     tomi
1727     x86
1728     x86_32
1729     x86_64
1730 "
1731
1732 ARCH_EXT_LIST_ARM="
1733     armv5te
1734     armv6
1735     armv6t2
1736     armv8
1737     neon
1738     vfp
1739     vfpv3
1740     setend
1741 "
1742
1743 ARCH_EXT_LIST_MIPS="
1744     mipsfpu
1745     mips32r2
1746     mips32r5
1747     mips64r2
1748     mips32r6
1749     mips64r6
1750     mipsdsp
1751     mipsdspr2
1752     msa
1753 "
1754
1755 ARCH_EXT_LIST_LOONGSON="
1756     loongson2
1757     loongson3
1758     mmi
1759 "
1760
1761 ARCH_EXT_LIST_X86_SIMD="
1762     aesni
1763     amd3dnow
1764     amd3dnowext
1765     avx
1766     avx2
1767     fma3
1768     fma4
1769     mmx
1770     mmxext
1771     sse
1772     sse2
1773     sse3
1774     sse4
1775     sse42
1776     ssse3
1777     xop
1778 "
1779
1780 ARCH_EXT_LIST_PPC="
1781     altivec
1782     dcbzl
1783     ldbrx
1784     power8
1785     ppc4xx
1786     vsx
1787 "
1788
1789 ARCH_EXT_LIST_X86="
1790     $ARCH_EXT_LIST_X86_SIMD
1791     cpunop
1792     i686
1793 "
1794
1795 ARCH_EXT_LIST="
1796     $ARCH_EXT_LIST_ARM
1797     $ARCH_EXT_LIST_PPC
1798     $ARCH_EXT_LIST_X86
1799     $ARCH_EXT_LIST_MIPS
1800     $ARCH_EXT_LIST_LOONGSON
1801 "
1802
1803 ARCH_FEATURES="
1804     aligned_stack
1805     fast_64bit
1806     fast_clz
1807     fast_cmov
1808     local_aligned_8
1809     local_aligned_16
1810     local_aligned_32
1811     simd_align_16
1812     simd_align_32
1813 "
1814
1815 BUILTIN_LIST="
1816     atomic_cas_ptr
1817     machine_rw_barrier
1818     MemoryBarrier
1819     mm_empty
1820     rdtsc
1821     sarestart
1822     sem_timedwait
1823     sync_val_compare_and_swap
1824 "
1825 HAVE_LIST_CMDLINE="
1826     inline_asm
1827     symver
1828     yasm
1829 "
1830
1831 HAVE_LIST_PUB="
1832     bigendian
1833     fast_unaligned
1834 "
1835
1836 HEADERS_LIST="
1837     alsa_asoundlib_h
1838     altivec_h
1839     arpa_inet_h
1840     asm_types_h
1841     cdio_paranoia_h
1842     cdio_paranoia_paranoia_h
1843     cuda_h
1844     dispatch_dispatch_h
1845     dev_bktr_ioctl_bt848_h
1846     dev_bktr_ioctl_meteor_h
1847     dev_ic_bt8xx_h
1848     dev_video_bktr_ioctl_bt848_h
1849     dev_video_meteor_ioctl_meteor_h
1850     direct_h
1851     dirent_h
1852     dlfcn_h
1853     d3d11_h
1854     dxva_h
1855     ES2_gl_h
1856     gsm_h
1857     io_h
1858     mach_mach_time_h
1859     machine_ioctl_bt848_h
1860     machine_ioctl_meteor_h
1861     malloc_h
1862     opencv2_core_core_c_h
1863     openjpeg_2_1_openjpeg_h
1864     openjpeg_2_0_openjpeg_h
1865     openjpeg_1_5_openjpeg_h
1866     OpenGL_gl3_h
1867     poll_h
1868     sndio_h
1869     soundcard_h
1870     stdatomic_h
1871     sys_mman_h
1872     sys_param_h
1873     sys_resource_h
1874     sys_select_h
1875     sys_soundcard_h
1876     sys_time_h
1877     sys_un_h
1878     sys_videoio_h
1879     termios_h
1880     udplite_h
1881     unistd_h
1882     valgrind_valgrind_h
1883     windows_h
1884     winsock2_h
1885 "
1886
1887 INTRINSICS_LIST="
1888     intrinsics_neon
1889 "
1890
1891 COMPLEX_FUNCS="
1892     cabs
1893     cexp
1894 "
1895
1896 MATH_FUNCS="
1897     atanf
1898     atan2f
1899     cbrt
1900     cbrtf
1901     copysign
1902     cosf
1903     erf
1904     exp2
1905     exp2f
1906     expf
1907     hypot
1908     isfinite
1909     isinf
1910     isnan
1911     ldexpf
1912     llrint
1913     llrintf
1914     log2
1915     log2f
1916     log10f
1917     lrint
1918     lrintf
1919     powf
1920     rint
1921     round
1922     roundf
1923     sinf
1924     trunc
1925     truncf
1926 "
1927
1928 SYSTEM_FUNCS="
1929     access
1930     aligned_malloc
1931     arc4random
1932     clock_gettime
1933     closesocket
1934     CommandLineToArgvW
1935     CoTaskMemFree
1936     CryptGenRandom
1937     dlopen
1938     fcntl
1939     flt_lim
1940     fork
1941     getaddrinfo
1942     gethrtime
1943     getopt
1944     GetProcessAffinityMask
1945     GetProcessMemoryInfo
1946     GetProcessTimes
1947     getrusage
1948     GetSystemTimeAsFileTime
1949     gettimeofday
1950     glob
1951     glXGetProcAddress
1952     gmtime_r
1953     inet_aton
1954     isatty
1955     jack_port_get_latency_range
1956     kbhit
1957     LoadLibrary
1958     localtime_r
1959     lstat
1960     lzo1x_999_compress
1961     mach_absolute_time
1962     MapViewOfFile
1963     memalign
1964     mkstemp
1965     mmap
1966     mprotect
1967     nanosleep
1968     PeekNamedPipe
1969     posix_memalign
1970     pthread_cancel
1971     sched_getaffinity
1972     SetConsoleTextAttribute
1973     SetConsoleCtrlHandler
1974     setmode
1975     setrlimit
1976     Sleep
1977     strerror_r
1978     sysconf
1979     sysctl
1980     usleep
1981     UTGetOSTypeFromString
1982     VirtualAlloc
1983     wglGetProcAddress
1984 "
1985
1986 TOOLCHAIN_FEATURES="
1987     as_dn_directive
1988     as_fpu_directive
1989     as_func
1990     as_object_arch
1991     asm_mod_q
1992     attribute_may_alias
1993     attribute_packed
1994     ebp_available
1995     ebx_available
1996     gnu_as
1997     gnu_windres
1998     ibm_asm
1999     inline_asm_direct_symbol_refs
2000     inline_asm_labels
2001     inline_asm_nonlocal_labels
2002     pragma_deprecated
2003     rsync_contimeout
2004     symver_asm_label
2005     symver_gnu_asm
2006     vfp_args
2007     xform_asm
2008     xmm_clobbers
2009 "
2010
2011 TYPES_LIST="
2012     CONDITION_VARIABLE_Ptr
2013     socklen_t
2014     struct_addrinfo
2015     struct_group_source_req
2016     struct_ip_mreq_source
2017     struct_ipv6_mreq
2018     struct_msghdr_msg_flags
2019     struct_pollfd
2020     struct_rusage_ru_maxrss
2021     struct_sctp_event_subscribe
2022     struct_sockaddr_in6
2023     struct_sockaddr_sa_len
2024     struct_sockaddr_storage
2025     struct_stat_st_mtim_tv_nsec
2026     struct_v4l2_frmivalenum_discrete
2027 "
2028
2029 HAVE_LIST="
2030     $ARCH_EXT_LIST
2031     $(add_suffix _external $ARCH_EXT_LIST)
2032     $(add_suffix _inline   $ARCH_EXT_LIST)
2033     $ARCH_FEATURES
2034     $ATOMICS_LIST
2035     $BUILTIN_LIST
2036     $COMPLEX_FUNCS
2037     $HAVE_LIST_CMDLINE
2038     $HAVE_LIST_PUB
2039     $HEADERS_LIST
2040     $INTRINSICS_LIST
2041     $MATH_FUNCS
2042     $SYSTEM_FUNCS
2043     $THREADS_LIST
2044     $TOOLCHAIN_FEATURES
2045     $TYPES_LIST
2046     alsa
2047     atomics_native
2048     dos_paths
2049     dxva2_lib
2050     dxva2api_cobj
2051     jack
2052     libc_msvcrt
2053     makeinfo
2054     makeinfo_html
2055     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2056     perl
2057     pod2man
2058     sdl2
2059     section_data_rel_ro
2060     sndio
2061     texi2html
2062     threads
2063     vaapi_drm
2064     vaapi_x11
2065     vdpau_x11
2066     winrt
2067 "
2068
2069 # options emitted with CONFIG_ prefix but not available on the command line
2070 CONFIG_EXTRA="
2071     aandcttables
2072     ac3dsp
2073     audio_frame_queue
2074     audiodsp
2075     blockdsp
2076     bswapdsp
2077     cabac
2078     dirac_parse
2079     dvprofile
2080     exif
2081     faandct
2082     faanidct
2083     fdctdsp
2084     flacdsp
2085     fmtconvert
2086     frame_thread_encoder
2087     g722dsp
2088     golomb
2089     gplv3
2090     h263dsp
2091     h264chroma
2092     h264dsp
2093     h264parse
2094     h264pred
2095     h264qpel
2096     hevcparse
2097     hpeldsp
2098     huffman
2099     huffyuvdsp
2100     huffyuvencdsp
2101     idctdsp
2102     iirfilter
2103     mdct15
2104     intrax8
2105     iso_media
2106     ividsp
2107     jpegtables
2108     lgplv3
2109     libx262
2110     llauddsp
2111     llviddsp
2112     llvidencdsp
2113     lpc
2114     lzf
2115     me_cmp
2116     mpeg_er
2117     mpegaudio
2118     mpegaudiodsp
2119     mpegaudioheader
2120     mpegvideo
2121     mpegvideoenc
2122     mss34dsp
2123     pixblockdsp
2124     qpeldsp
2125     qsv
2126     qsvdec
2127     qsvenc
2128     rangecoder
2129     riffdec
2130     riffenc
2131     rtpdec
2132     rtpenc_chain
2133     rv34dsp
2134     sinewin
2135     snappy
2136     srtp
2137     startcode
2138     texturedsp
2139     texturedspenc
2140     tpeldsp
2141     vaapi_encode
2142     vc1dsp
2143     videodsp
2144     vp3dsp
2145     vp56dsp
2146     vp8dsp
2147     vt_bt2020
2148     wma_freqs
2149     wmv2dsp
2150 "
2151
2152 CMDLINE_SELECT="
2153     $ARCH_EXT_LIST
2154     $CONFIG_LIST
2155     $HAVE_LIST_CMDLINE
2156     $THREADS_LIST
2157     asm
2158     cross_compile
2159     debug
2160     extra_warnings
2161     logging
2162     lto
2163     optimizations
2164     rpath
2165     stripping
2166 "
2167
2168 PATHS_LIST="
2169     bindir
2170     datadir
2171     docdir
2172     incdir
2173     libdir
2174     mandir
2175     pkgconfigdir
2176     prefix
2177     shlibdir
2178     install_name_dir
2179 "
2180
2181 CMDLINE_SET="
2182     $PATHS_LIST
2183     ar
2184     arch
2185     as
2186     assert_level
2187     build_suffix
2188     cc
2189     objcc
2190     cpu
2191     cross_prefix
2192     custom_allocator
2193     cxx
2194     dep_cc
2195     doxygen
2196     env
2197     extra_version
2198     gas
2199     host_cc
2200     host_cflags
2201     host_extralibs
2202     host_ld
2203     host_ldflags
2204     host_os
2205     install
2206     ld
2207     ln_s
2208     logfile
2209     malloc_prefix
2210     nm
2211     optflags
2212     pkg_config
2213     pkg_config_flags
2214     progs_suffix
2215     random_seed
2216     ranlib
2217     samples
2218     strip
2219     sws_max_filter_size
2220     sysinclude
2221     sysroot
2222     target_exec
2223     target_os
2224     target_path
2225     target_samples
2226     tempprefix
2227     toolchain
2228     valgrind
2229     yasmexe
2230 "
2231
2232 CMDLINE_APPEND="
2233     extra_cflags
2234     extra_cxxflags
2235     extra_objcflags
2236     host_cppflags
2237 "
2238
2239 # code dependency declarations
2240
2241 # architecture extensions
2242
2243 armv5te_deps="arm"
2244 armv6_deps="arm"
2245 armv6t2_deps="arm"
2246 armv8_deps="aarch64"
2247 neon_deps_any="aarch64 arm"
2248 intrinsics_neon_deps="neon"
2249 vfp_deps_any="aarch64 arm"
2250 vfpv3_deps="vfp"
2251 setend_deps="arm"
2252
2253 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2254
2255 loongson2_deps="mips"
2256 loongson3_deps="mips"
2257 mipsfpu_deps="mips"
2258 mipsdsp_deps="mips"
2259 mipsdspr2_deps="mips"
2260 mips32r2_deps="mips"
2261 mips32r5_deps="mips"
2262 mips32r6_deps="mips"
2263 mips64r2_deps="mips"
2264 mips64r6_deps="mips"
2265 msa_deps="mipsfpu"
2266 mmi_deps="mips"
2267
2268 altivec_deps="ppc"
2269 dcbzl_deps="ppc"
2270 ldbrx_deps="ppc"
2271 ppc4xx_deps="ppc"
2272 vsx_deps="altivec"
2273 power8_deps="vsx"
2274
2275 cpunop_deps="i686"
2276 x86_64_select="i686"
2277 x86_64_suggest="fast_cmov"
2278
2279 amd3dnow_deps="mmx"
2280 amd3dnowext_deps="amd3dnow"
2281 i686_deps="x86"
2282 mmx_deps="x86"
2283 mmxext_deps="mmx"
2284 sse_deps="mmxext"
2285 sse2_deps="sse"
2286 sse3_deps="sse2"
2287 ssse3_deps="sse3"
2288 sse4_deps="ssse3"
2289 sse42_deps="sse4"
2290 aesni_deps="sse42"
2291 avx_deps="sse42"
2292 xop_deps="avx"
2293 fma3_deps="avx"
2294 fma4_deps="avx"
2295 avx2_deps="avx"
2296
2297 mmx_external_deps="yasm"
2298 mmx_inline_deps="inline_asm"
2299 mmx_suggest="mmx_external mmx_inline"
2300
2301 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2302     eval dep=\$${ext}_deps
2303     eval ${ext}_external_deps='"${dep}_external"'
2304     eval ${ext}_inline_deps='"${dep}_inline"'
2305     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2306 done
2307
2308 aligned_stack_if_any="aarch64 ppc x86"
2309 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2310 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2311 fast_unaligned_if_any="aarch64 ppc x86"
2312 simd_align_16_if_any="altivec neon sse"
2313 simd_align_32_if_any="avx"
2314
2315 # system capabilities
2316 symver_if_any="symver_asm_label symver_gnu_asm"
2317 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
2318
2319 # threading support
2320 atomics_gcc_if="sync_val_compare_and_swap"
2321 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2322 atomics_win32_if="MemoryBarrier"
2323 atomics_native_if_any="$ATOMICS_LIST"
2324 w32threads_deps="atomics_native"
2325 threads_if_any="$THREADS_LIST"
2326
2327 # subsystems
2328 dct_select="rdft"
2329 dirac_parse_select="golomb"
2330 error_resilience_select="me_cmp"
2331 faandct_deps="faan fdctdsp"
2332 faanidct_deps="faan idctdsp"
2333 h264dsp_select="startcode"
2334 hevcparse_select="golomb"
2335 frame_thread_encoder_deps="encoders threads"
2336 intrax8_select="blockdsp idctdsp"
2337 mdct_select="fft"
2338 mdct15_select="fft"
2339 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2340 mpeg_er_select="error_resilience"
2341 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2342 mpegaudiodsp_select="dct"
2343 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2344 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2345 vc1dsp_select="h264chroma qpeldsp startcode"
2346 rdft_select="fft"
2347
2348 # decoders / encoders
2349 aac_decoder_select="mdct15 mdct sinewin"
2350 aac_fixed_decoder_select="mdct sinewin"
2351 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2352 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2353 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2354 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2355 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2356 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2357 adpcm_g722_decoder_select="g722dsp"
2358 adpcm_g722_encoder_select="g722dsp"
2359 aic_decoder_select="golomb idctdsp"
2360 alac_encoder_select="lpc"
2361 als_decoder_select="bswapdsp"
2362 amrnb_decoder_select="lsp"
2363 amrwb_decoder_select="lsp"
2364 amv_decoder_select="sp5x_decoder exif"
2365 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2366 ape_decoder_select="bswapdsp llauddsp"
2367 apng_decoder_select="zlib"
2368 apng_encoder_select="llvidencdsp zlib"
2369 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2370 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2371 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2372 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2373 atrac1_decoder_select="mdct sinewin"
2374 atrac3_decoder_select="mdct"
2375 atrac3p_decoder_select="mdct sinewin"
2376 avrn_decoder_select="exif jpegtables"
2377 bink_decoder_select="blockdsp hpeldsp"
2378 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2379 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2380 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2381 cllc_decoder_select="bswapdsp"
2382 comfortnoise_encoder_select="lpc"
2383 cook_decoder_select="audiodsp mdct sinewin"
2384 cscd_decoder_select="lzo"
2385 cscd_decoder_suggest="zlib"
2386 dca_decoder_select="mdct"
2387 dds_decoder_select="texturedsp"
2388 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2389 dnxhd_decoder_select="blockdsp idctdsp"
2390 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2391 dvvideo_decoder_select="dvprofile idctdsp"
2392 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2393 dxa_decoder_select="zlib"
2394 dxv_decoder_select="lzf texturedsp"
2395 eac3_decoder_select="ac3_decoder"
2396 eac3_encoder_select="ac3_encoder"
2397 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2398 eatgq_decoder_select="aandcttables"
2399 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2400 exr_decoder_select="zlib"
2401 ffv1_decoder_select="rangecoder"
2402 ffv1_encoder_select="rangecoder"
2403 ffvhuff_decoder_select="huffyuv_decoder"
2404 ffvhuff_encoder_select="huffyuv_encoder"
2405 fic_decoder_select="golomb"
2406 flac_decoder_select="flacdsp"
2407 flac_encoder_select="bswapdsp flacdsp lpc"
2408 flashsv2_decoder_select="zlib"
2409 flashsv2_encoder_select="zlib"
2410 flashsv_decoder_select="zlib"
2411 flashsv_encoder_select="zlib"
2412 flv_decoder_select="h263_decoder"
2413 flv_encoder_select="h263_encoder"
2414 fourxm_decoder_select="blockdsp bswapdsp"
2415 fraps_decoder_select="bswapdsp huffman"
2416 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2417 g729_decoder_select="audiodsp"
2418 h261_decoder_select="mpegvideo"
2419 h261_encoder_select="aandcttables mpegvideoenc"
2420 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2421 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2422 h263i_decoder_select="h263_decoder"
2423 h263p_decoder_select="h263_decoder"
2424 h263p_encoder_select="h263_encoder"
2425 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2426 h264_decoder_suggest="error_resilience"
2427 hap_decoder_select="snappy texturedsp"
2428 hap_encoder_deps="libsnappy"
2429 hap_encoder_select="texturedspenc"
2430 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2431 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2432 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2433 iac_decoder_select="imc_decoder"
2434 imc_decoder_select="bswapdsp fft mdct sinewin"
2435 indeo3_decoder_select="hpeldsp"
2436 indeo4_decoder_select="ividsp"
2437 indeo5_decoder_select="ividsp"
2438 interplay_video_decoder_select="hpeldsp"
2439 jpegls_decoder_select="mjpeg_decoder"
2440 jv_decoder_select="blockdsp"
2441 lagarith_decoder_select="llviddsp"
2442 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2443 magicyuv_decoder_select="llviddsp"
2444 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2445 metasound_decoder_select="lsp mdct sinewin"
2446 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2447 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2448 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2449 mjpegb_decoder_select="mjpeg_decoder"
2450 mlp_decoder_select="mlp_parser"
2451 motionpixels_decoder_select="bswapdsp"
2452 mp1_decoder_select="mpegaudio"
2453 mp1float_decoder_select="mpegaudio"
2454 mp2_decoder_select="mpegaudio"
2455 mp2float_decoder_select="mpegaudio"
2456 mp3_decoder_select="mpegaudio"
2457 mp3adu_decoder_select="mpegaudio"
2458 mp3adufloat_decoder_select="mpegaudio"
2459 mp3float_decoder_select="mpegaudio"
2460 mp3on4_decoder_select="mpegaudio"
2461 mp3on4float_decoder_select="mpegaudio"
2462 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2463 mpc8_decoder_select="mpegaudiodsp"
2464 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2465 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2466 mpegvideo_decoder_select="mpegvideo"
2467 mpeg1video_decoder_select="mpegvideo"
2468 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2469 mpeg2video_decoder_select="mpegvideo"
2470 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2471 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2472 mpeg4_encoder_select="h263_encoder"
2473 msa1_decoder_select="mss34dsp"
2474 mscc_decoder_select="zlib"
2475 msmpeg4v1_decoder_select="h263_decoder"
2476 msmpeg4v2_decoder_select="h263_decoder"
2477 msmpeg4v2_encoder_select="h263_encoder"
2478 msmpeg4v3_decoder_select="h263_decoder"
2479 msmpeg4v3_encoder_select="h263_encoder"
2480 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2481 mts2_decoder_select="mss34dsp"
2482 mxpeg_decoder_select="mjpeg_decoder"
2483 nellymoser_decoder_select="mdct sinewin"
2484 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2485 nuv_decoder_select="idctdsp lzo"
2486 on2avc_decoder_select="mdct"
2487 opus_decoder_deps="swresample"
2488 opus_decoder_select="mdct15"
2489 opus_encoder_select="audio_frame_queue mdct15"
2490 png_decoder_select="zlib"
2491 png_encoder_select="llvidencdsp zlib"
2492 prores_decoder_select="blockdsp idctdsp"
2493 prores_encoder_select="fdctdsp"
2494 qcelp_decoder_select="lsp"
2495 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2496 ra_144_decoder_select="audiodsp"
2497 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2498 ralf_decoder_select="golomb"
2499 rawvideo_decoder_select="bswapdsp"
2500 rscc_decoder_select="zlib"
2501 rtjpeg_decoder_select="me_cmp"
2502 rv10_decoder_select="h263_decoder"
2503 rv10_encoder_select="h263_encoder"
2504 rv20_decoder_select="h263_decoder"
2505 rv20_encoder_select="h263_encoder"
2506 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2507 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2508 screenpresso_decoder_select="zlib"
2509 shorten_decoder_select="bswapdsp"
2510 sipr_decoder_select="lsp"
2511 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2512 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2513 sonic_decoder_select="golomb rangecoder"
2514 sonic_encoder_select="golomb rangecoder"
2515 sonic_ls_encoder_select="golomb rangecoder"
2516 sp5x_decoder_select="mjpeg_decoder"
2517 srgc_decoder_select="zlib"
2518 svq1_decoder_select="hpeldsp"
2519 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2520 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2521 svq3_decoder_suggest="zlib"
2522 tak_decoder_select="audiodsp"
2523 tdsc_decoder_select="zlib mjpeg_decoder"
2524 theora_decoder_select="vp3_decoder"
2525 thp_decoder_select="mjpeg_decoder"
2526 tiff_decoder_suggest="zlib lzma"
2527 tiff_encoder_suggest="zlib"
2528 truehd_decoder_select="mlp_parser"
2529 truemotion2_decoder_select="bswapdsp"
2530 truespeech_decoder_select="bswapdsp"
2531 tscc_decoder_select="zlib"
2532 twinvq_decoder_select="mdct lsp sinewin"
2533 txd_decoder_select="texturedsp"
2534 utvideo_decoder_select="bswapdsp llviddsp"
2535 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2536 vble_decoder_select="llviddsp"
2537 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2538 vc1_qsv_decoder_deps="libmfx"
2539 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2540 vc1image_decoder_select="vc1_decoder"
2541 vorbis_decoder_select="mdct"
2542 vorbis_encoder_select="mdct"
2543 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2544 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2545 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2546 vp6a_decoder_select="vp6_decoder"
2547 vp6f_decoder_select="vp6_decoder"
2548 vp7_decoder_select="h264pred videodsp vp8dsp"
2549 vp8_decoder_select="h264pred videodsp vp8dsp"
2550 vp9_decoder_select="videodsp vp9_parser"
2551 webp_decoder_select="vp8_decoder exif"
2552 wmalossless_decoder_select="llauddsp"
2553 wmapro_decoder_select="mdct sinewin wma_freqs"
2554 wmav1_decoder_select="mdct sinewin wma_freqs"
2555 wmav1_encoder_select="mdct sinewin wma_freqs"
2556 wmav2_decoder_select="mdct sinewin wma_freqs"
2557 wmav2_encoder_select="mdct sinewin wma_freqs"
2558 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2559 wmv1_decoder_select="h263_decoder"
2560 wmv1_encoder_select="h263_encoder"
2561 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2562 wmv2_encoder_select="h263_encoder wmv2dsp"
2563 wmv3_decoder_select="vc1_decoder"
2564 wmv3image_decoder_select="wmv3_decoder"
2565 xma1_decoder_select="wmapro_decoder"
2566 xma2_decoder_select="wmapro_decoder"
2567 zerocodec_decoder_select="zlib"
2568 zlib_decoder_select="zlib"
2569 zlib_encoder_select="zlib"
2570 zmbv_decoder_select="zlib"
2571 zmbv_encoder_select="zlib"
2572
2573 # platform codecs
2574 audiotoolbox_deps="AudioToolbox_AudioToolbox_h"
2575 audiotoolbox_extralibs="-framework CoreFoundation -framework AudioToolbox -framework CoreMedia"
2576
2577 # hardware accelerators
2578 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2579 cuda_deps_any="dlopen LoadLibrary"
2580 cuvid_deps="cuda"
2581 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2582 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2583 dxva2_extralibs="-luser32"
2584 dxva2_lib_deps="dxva2"
2585 vda_framework_deps="VideoDecodeAcceleration_VDADecoder_h"
2586 vda_framework_extralibs="-framework VideoDecodeAcceleration"
2587 vda_deps="vda_framework pthreads"
2588 vda_extralibs="-framework CoreFoundation -framework QuartzCore"
2589 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2590 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2591 xvmc_deps="X11_extensions_XvMClib_h"
2592
2593 h263_vaapi_hwaccel_deps="vaapi"
2594 h263_vaapi_hwaccel_select="h263_decoder"
2595 h263_videotoolbox_hwaccel_deps="videotoolbox"
2596 h263_videotoolbox_hwaccel_select="h263_decoder"
2597 h264_cuvid_hwaccel_deps="cuda cuvid"
2598 h264_cuvid_hwaccel_select="h264_cuvid_decoder"
2599 h264_d3d11va_hwaccel_deps="d3d11va"
2600 h264_d3d11va_hwaccel_select="h264_decoder"
2601 h264_dxva2_hwaccel_deps="dxva2"
2602 h264_dxva2_hwaccel_select="h264_decoder"
2603 h264_mediacodec_hwaccel_deps="mediacodec"
2604 h264_mmal_hwaccel_deps="mmal"
2605 h264_qsv_hwaccel_deps="libmfx"
2606 h264_vaapi_hwaccel_deps="vaapi"
2607 h264_vaapi_hwaccel_select="h264_decoder"
2608 h264_vda_hwaccel_deps="vda"
2609 h264_vda_hwaccel_select="h264_decoder"
2610 h264_vda_old_hwaccel_deps="vda"
2611 h264_vda_old_hwaccel_select="h264_decoder"
2612 h264_vdpau_hwaccel_deps="vdpau"
2613 h264_vdpau_hwaccel_select="h264_decoder"
2614 h264_videotoolbox_hwaccel_deps="videotoolbox"
2615 h264_videotoolbox_hwaccel_select="h264_decoder"
2616 hevc_cuvid_hwaccel_deps="cuda cuvid"
2617 hevc_cuvid_hwaccel_select="hevc_cuvid_decoder"
2618 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2619 hevc_d3d11va_hwaccel_select="hevc_decoder"
2620 hevc_mediacodec_hwaccel_deps="mediacodec"
2621 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2622 hevc_dxva2_hwaccel_select="hevc_decoder"
2623 hevc_qsv_hwaccel_deps="libmfx"
2624 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2625 hevc_vaapi_hwaccel_select="hevc_decoder"
2626 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2627 hevc_vdpau_hwaccel_select="hevc_decoder"
2628 mjpeg_cuvid_hwaccel_deps="cuda cuvid"
2629 mjpeg_cuvid_hwaccel_select="mjpeg_cuvid_decoder"
2630 mpeg_xvmc_hwaccel_deps="xvmc"
2631 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2632 mpeg1_cuvid_hwaccel_deps="cuda cuvid"
2633 mpeg1_cuvid_hwaccel_select="mpeg1_cuvid_decoder"
2634 mpeg1_vdpau_hwaccel_deps="vdpau"
2635 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2636 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2637 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2638 mpeg1_xvmc_hwaccel_deps="xvmc"
2639 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2640 mpeg2_cuvid_hwaccel_deps="cuda cuvid"
2641 mpeg2_cuvid_hwaccel_select="mpeg2_cuvid_decoder"
2642 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2643 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2644 mpeg2_dxva2_hwaccel_deps="dxva2"
2645 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2646 mpeg2_mmal_hwaccel_deps="mmal"
2647 mpeg2_qsv_hwaccel_deps="libmfx"
2648 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2649 mpeg2_vaapi_hwaccel_deps="vaapi"
2650 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2651 mpeg2_vdpau_hwaccel_deps="vdpau"
2652 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2653 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2654 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2655 mpeg2_xvmc_hwaccel_deps="xvmc"
2656 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2657 mpeg4_cuvid_hwaccel_deps="cuda cuvid"
2658 mpeg4_cuvid_hwaccel_select="mpeg4_cuvid_decoder"
2659 mpeg4_mediacodec_hwaccel_deps="mediacodec"
2660 mpeg4_mmal_hwaccel_deps="mmal"
2661 mpeg4_vaapi_hwaccel_deps="vaapi"
2662 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2663 mpeg4_vdpau_hwaccel_deps="vdpau"
2664 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2665 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2666 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2667 vc1_cuvid_hwaccel_deps="cuda cuvid"
2668 vc1_cuvid_hwaccel_select="vc1_cuvid_decoder"
2669 vc1_d3d11va_hwaccel_deps="d3d11va"
2670 vc1_d3d11va_hwaccel_select="vc1_decoder"
2671 vc1_dxva2_hwaccel_deps="dxva2"
2672 vc1_dxva2_hwaccel_select="vc1_decoder"
2673 vc1_mmal_hwaccel_deps="mmal"
2674 vc1_qsv_hwaccel_deps="libmfx"
2675 vc1_qsv_hwaccel_select="qsvdec_vc1"
2676 vc1_vaapi_hwaccel_deps="vaapi"
2677 vc1_vaapi_hwaccel_select="vc1_decoder"
2678 vc1_vdpau_hwaccel_deps="vdpau"
2679 vc1_vdpau_hwaccel_select="vc1_decoder"
2680 vp8_cuvid_hwaccel_deps="cuda cuvid"
2681 vp8_cuvid_hwaccel_select="vp8_cuvid_decoder"
2682 vp9_cuvid_hwaccel_deps="cuda cuvid"
2683 vp9_cuvid_hwaccel_select="vp9_cuvid_decoder"
2684 vp8_mediacodec_hwaccel_deps="mediacodec"
2685 vp8_qsv_hwaccel_deps="libmfx"
2686 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2687 vp9_d3d11va_hwaccel_select="vp9_decoder"
2688 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2689 vp9_dxva2_hwaccel_select="vp9_decoder"
2690 vp9_mediacodec_hwaccel_deps="mediacodec"
2691 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2692 vp9_vaapi_hwaccel_select="vp9_decoder"
2693 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2694 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2695 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2696 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2697
2698 # hardware-accelerated codecs
2699 omx_deps="dlopen pthreads"
2700 omx_extralibs='$ldl'
2701 omx_rpi_select="omx"
2702 qsvdec_select="qsv"
2703 qsvenc_select="qsv"
2704 vaapi_encode_deps="vaapi"
2705
2706 hwupload_cuda_filter_deps="cuda"
2707 scale_npp_filter_deps="cuda libnpp"
2708
2709 nvenc_deps="cuda"
2710 nvenc_deps_any="dlopen LoadLibrary"
2711 nvenc_encoder_deps="nvenc"
2712
2713 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2714 h264_cuvid_decoder_deps="cuda cuvid"
2715 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2716 h264_mediacodec_decoder_deps="mediacodec"
2717 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2718 h264_mmal_decoder_deps="mmal"
2719 h264_nvenc_encoder_deps="nvenc"
2720 h264_omx_encoder_deps="omx"
2721 h264_qsv_decoder_deps="libmfx"
2722 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2723 h264_qsv_encoder_deps="libmfx"
2724 h264_qsv_encoder_select="qsvenc"
2725 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2726 h264_vaapi_encoder_select="vaapi_encode golomb"
2727 h264_vda_decoder_deps="vda"
2728 h264_vda_decoder_select="h264_decoder"
2729 h264_vdpau_decoder_deps="vdpau"
2730 h264_vdpau_decoder_select="h264_decoder"
2731 hevc_cuvid_decoder_deps="cuda cuvid"
2732 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2733 hevc_mediacodec_decoder_deps="mediacodec"
2734 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2735 hevc_nvenc_encoder_deps="nvenc"
2736 hevc_qsv_decoder_deps="libmfx"
2737 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2738 hevc_qsv_encoder_deps="libmfx"
2739 hevc_qsv_encoder_select="hevcparse qsvenc"
2740 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2741 hevc_vaapi_encoder_select="vaapi_encode golomb"
2742 mjpeg_cuvid_decoder_deps="cuda cuvid"
2743 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2744 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2745 mpeg1_cuvid_decoder_deps="cuda cuvid"
2746 mpeg1_vdpau_decoder_deps="vdpau"
2747 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2748 mpeg2_crystalhd_decoder_select="crystalhd"
2749 mpeg2_cuvid_decoder_deps="cuda cuvid"
2750 mpeg2_mmal_decoder_deps="mmal"
2751 mpeg2_qsv_decoder_deps="libmfx"
2752 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2753 mpeg2_qsv_encoder_deps="libmfx"
2754 mpeg2_qsv_encoder_select="qsvenc"
2755 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2756 mpeg2_vaapi_encoder_select="vaapi_encode"
2757 mpeg4_crystalhd_decoder_select="crystalhd"
2758 mpeg4_cuvid_decoder_deps="cuda cuvid"
2759 mpeg4_mediacodec_decoder_deps="mediacodec"
2760 mpeg4_mmal_decoder_deps="mmal"
2761 mpeg4_omx_encoder_deps="omx"
2762 mpeg4_vdpau_decoder_deps="vdpau"
2763 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2764 mpeg_vdpau_decoder_deps="vdpau"
2765 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2766 msmpeg4_crystalhd_decoder_select="crystalhd"
2767 nvenc_h264_encoder_select="h264_nvenc_encoder"
2768 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2769 vc1_crystalhd_decoder_select="crystalhd"
2770 vc1_cuvid_decoder_deps="cuda cuvid"
2771 vc1_mmal_decoder_deps="mmal"
2772 vc1_vdpau_decoder_deps="vdpau"
2773 vc1_vdpau_decoder_select="vc1_decoder"
2774 vp8_cuvid_decoder_deps="cuda cuvid"
2775 vp8_mediacodec_decoder_deps="mediacodec"
2776 vp8_qsv_decoder_deps="libmfx"
2777 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2778 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2779 vp8_vaapi_encoder_select="vaapi_encode"
2780 vp9_cuvid_decoder_deps="cuda cuvid"
2781 vp9_mediacodec_decoder_deps="mediacodec"
2782 wmv3_crystalhd_decoder_select="crystalhd"
2783 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2784
2785 # parsers
2786 h264_parser_select="golomb h264dsp h264parse"
2787 hevc_parser_select="hevcparse"
2788 mpegaudio_parser_select="mpegaudioheader"
2789 mpegvideo_parser_select="mpegvideo"
2790 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2791 vc1_parser_select="vc1dsp"
2792
2793 # bitstream_filters
2794 mjpeg2jpeg_bsf_select="jpegtables"
2795
2796 # external libraries
2797 aac_at_decoder_deps="audiotoolbox"
2798 ac3_at_decoder_deps="audiotoolbox"
2799 ac3_at_decoder_select="ac3_parser"
2800 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2801 alac_at_decoder_deps="audiotoolbox"
2802 amr_nb_at_decoder_deps="audiotoolbox"
2803 avisynth_deps_any="dlopen LoadLibrary"
2804 avisynth_demuxer_deps="avisynth"
2805 avisynth_demuxer_select="riffdec"
2806 eac3_at_decoder_deps="audiotoolbox"
2807 eac3_at_decoder_select="ac3_parser"
2808 gsm_ms_at_decoder_deps="audiotoolbox"
2809 ilbc_at_decoder_deps="audiotoolbox"
2810 mp1_at_decoder_deps="audiotoolbox"
2811 mp2_at_decoder_deps="audiotoolbox"
2812 mp3_at_decoder_deps="audiotoolbox"
2813 mp1_at_decoder_select="mpegaudioheader"
2814 mp2_at_decoder_select="mpegaudioheader"
2815 mp3_at_decoder_select="mpegaudioheader"
2816 pcm_alaw_at_decoder_deps="audiotoolbox"
2817 pcm_mulaw_at_decoder_deps="audiotoolbox"
2818 qdmc_at_decoder_deps="audiotoolbox"
2819 qdm2_at_decoder_deps="audiotoolbox"
2820 aac_at_encoder_deps="audiotoolbox"
2821 aac_at_encoder_select="audio_frame_queue"
2822 alac_at_encoder_deps="audiotoolbox"
2823 alac_at_encoder_select="audio_frame_queue"
2824 ilbc_at_encoder_deps="audiotoolbox"
2825 ilbc_at_encoder_select="audio_frame_queue"
2826 pcm_alaw_at_encoder_deps="audiotoolbox"
2827 pcm_alaw_at_encoder_select="audio_frame_queue"
2828 pcm_mulaw_at_encoder_deps="audiotoolbox"
2829 pcm_mulaw_at_encoder_select="audio_frame_queue"
2830 chromaprint_muxer_deps="chromaprint"
2831 h264_videotoolbox_encoder_deps="videotoolbox_encoder pthreads"
2832 libcelt_decoder_deps="libcelt"
2833 libfdk_aac_decoder_deps="libfdk_aac"
2834 libfdk_aac_encoder_deps="libfdk_aac"
2835 libfdk_aac_encoder_select="audio_frame_queue"
2836 libgme_demuxer_deps="libgme"
2837 libgsm_decoder_deps="libgsm"
2838 libgsm_encoder_deps="libgsm"
2839 libgsm_ms_decoder_deps="libgsm"
2840 libgsm_ms_encoder_deps="libgsm"
2841 libilbc_decoder_deps="libilbc"
2842 libilbc_encoder_deps="libilbc"
2843 libkvazaar_encoder_deps="libkvazaar"
2844 libmodplug_demuxer_deps="libmodplug"
2845 libmp3lame_encoder_deps="libmp3lame"
2846 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2847 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2848 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2849 libopencore_amrnb_encoder_select="audio_frame_queue"
2850 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2851 libopenh264_decoder_deps="libopenh264"
2852 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2853 libopenh264_encoder_deps="libopenh264"
2854 libopenjpeg_decoder_deps="libopenjpeg"
2855 libopenjpeg_encoder_deps="libopenjpeg"
2856 libopenmpt_demuxer_deps="libopenmpt"
2857 libopus_decoder_deps="libopus"
2858 libopus_encoder_deps="libopus"
2859 libopus_encoder_select="audio_frame_queue"
2860 libschroedinger_decoder_deps="libschroedinger"
2861 libschroedinger_encoder_deps="libschroedinger"
2862 libshine_encoder_deps="libshine"
2863 libshine_encoder_select="audio_frame_queue"
2864 libspeex_decoder_deps="libspeex"
2865 libspeex_encoder_deps="libspeex"
2866 libspeex_encoder_select="audio_frame_queue"
2867 libtheora_encoder_deps="libtheora"
2868 libtwolame_encoder_deps="libtwolame"
2869 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2870 libvorbis_decoder_deps="libvorbis"
2871 libvorbis_encoder_deps="libvorbis"
2872 libvorbis_encoder_select="audio_frame_queue"
2873 libvpx_vp8_decoder_deps="libvpx"
2874 libvpx_vp8_encoder_deps="libvpx"
2875 libvpx_vp9_decoder_deps="libvpx"
2876 libvpx_vp9_encoder_deps="libvpx"
2877 libwavpack_encoder_deps="libwavpack"
2878 libwavpack_encoder_select="audio_frame_queue"
2879 libwebp_encoder_deps="libwebp"
2880 libwebp_anim_encoder_deps="libwebp"
2881 libx262_encoder_deps="libx262"
2882 libx264_encoder_deps="libx264"
2883 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2884 libx264rgb_encoder_select="libx264_encoder"
2885 libx265_encoder_deps="libx265"
2886 libxavs_encoder_deps="libxavs"
2887 libxvid_encoder_deps="libxvid"
2888 libzvbi_teletext_decoder_deps="libzvbi"
2889 videotoolbox_deps="VideoToolbox_VideoToolbox_h"
2890 videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework CoreVideo"
2891 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2892 videotoolbox_encoder_suggest="vda_framework vt_bt2020"
2893 vt_bt2020_deps="kCVImageBufferColorPrimaries_ITU_R_2020"
2894
2895 # demuxers / muxers
2896 ac3_demuxer_select="ac3_parser"
2897 aiff_muxer_select="iso_media"
2898 asf_demuxer_select="riffdec"
2899 asf_o_demuxer_select="riffdec"
2900 asf_muxer_select="riffenc"
2901 asf_stream_muxer_select="asf_muxer"
2902 avi_demuxer_select="iso_media riffdec exif"
2903 avi_muxer_select="riffenc"
2904 caf_demuxer_select="iso_media riffdec"
2905 caf_muxer_select="iso_media"
2906 dash_muxer_select="mp4_muxer"
2907 dirac_demuxer_select="dirac_parser"
2908 dts_demuxer_select="dca_parser"
2909 dtshd_demuxer_select="dca_parser"
2910 dv_demuxer_select="dvprofile"
2911 dv_muxer_select="dvprofile"
2912 dxa_demuxer_select="riffdec"
2913 eac3_demuxer_select="ac3_parser"
2914 f4v_muxer_select="mov_muxer"
2915 fifo_muxer_deps="threads"
2916 flac_demuxer_select="flac_parser"
2917 hds_muxer_select="flv_muxer"
2918 hls_muxer_select="mpegts_muxer"
2919 image2_alias_pix_demuxer_select="image2_demuxer"
2920 image2_brender_pix_demuxer_select="image2_demuxer"
2921 ipod_muxer_select="mov_muxer"
2922 ismv_muxer_select="mov_muxer"
2923 libnut_demuxer_deps="libnut"
2924 libnut_muxer_deps="libnut"
2925 matroska_audio_muxer_select="matroska_muxer"
2926 matroska_demuxer_select="iso_media riffdec"
2927 matroska_demuxer_suggest="bzlib lzo zlib"
2928 matroska_muxer_select="iso_media riffenc"
2929 mmf_muxer_select="riffenc"
2930 mov_demuxer_select="iso_media riffdec"
2931 mov_demuxer_suggest="zlib"
2932 mov_muxer_select="iso_media riffenc rtpenc_chain"
2933 mp3_demuxer_select="mpegaudio_parser"
2934 mp3_muxer_select="mpegaudioheader"
2935 mp4_muxer_select="mov_muxer"
2936 mpegts_demuxer_select="iso_media"
2937 mpegts_muxer_select="adts_muxer latm_muxer"
2938 mpegtsraw_demuxer_select="mpegts_demuxer"
2939 mxf_d10_muxer_select="mxf_muxer"
2940 mxf_opatom_muxer_select="mxf_muxer"
2941 nut_muxer_select="riffenc"
2942 nuv_demuxer_select="riffdec"
2943 oga_muxer_select="ogg_muxer"
2944 ogg_demuxer_select="dirac_parse"
2945 ogv_muxer_select="ogg_muxer"
2946 opus_muxer_select="ogg_muxer"
2947 psp_muxer_select="mov_muxer"
2948 rtp_demuxer_select="sdp_demuxer"
2949 rtp_muxer_select="golomb"
2950 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2951 rtsp_demuxer_select="http_protocol rtpdec"
2952 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2953 sap_demuxer_select="sdp_demuxer"
2954 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2955 sdp_demuxer_select="rtpdec"
2956 smoothstreaming_muxer_select="ismv_muxer"
2957 spdif_muxer_select="aac_parser"
2958 spx_muxer_select="ogg_muxer"
2959 swf_demuxer_suggest="zlib"
2960 tak_demuxer_select="tak_parser"
2961 tg2_muxer_select="mov_muxer"
2962 tgp_muxer_select="mov_muxer"
2963 vobsub_demuxer_select="mpegps_demuxer"
2964 w64_demuxer_select="wav_demuxer"
2965 w64_muxer_select="wav_muxer"
2966 wav_demuxer_select="riffdec"
2967 wav_muxer_select="riffenc"
2968 webm_muxer_select="iso_media riffenc"
2969 webm_dash_manifest_demuxer_select="matroska_demuxer"
2970 wtv_demuxer_select="mpegts_demuxer riffdec"
2971 wtv_muxer_select="mpegts_muxer riffenc"
2972 xmv_demuxer_select="riffdec"
2973 xwma_demuxer_select="riffdec"
2974
2975 # indevs / outdevs
2976 alsa_indev_deps="alsa"
2977 alsa_outdev_deps="alsa"
2978 avfoundation_indev_deps="pthreads"
2979 avfoundation_indev_extralibs="-framework Foundation -framework AVFoundation -framework CoreVideo -framework CoreMedia"
2980 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2981 caca_outdev_deps="libcaca"
2982 decklink_indev_deps="decklink threads"
2983 decklink_indev_extralibs="-lstdc++"
2984 decklink_outdev_deps="decklink threads"
2985 decklink_outdev_extralibs="-lstdc++"
2986 dshow_indev_deps="IBaseFilter"
2987 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
2988 dv1394_indev_deps="dv1394"
2989 dv1394_indev_select="dv_demuxer"
2990 fbdev_indev_deps="linux_fb_h"
2991 fbdev_outdev_deps="linux_fb_h"
2992 gdigrab_indev_deps="CreateDIBSection"
2993 gdigrab_indev_extralibs="-lgdi32"
2994 gdigrab_indev_select="bmp_decoder"
2995 iec61883_indev_deps="libiec61883"
2996 jack_indev_deps="jack"
2997 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2998 lavfi_indev_deps="avfilter"
2999 libcdio_indev_deps="libcdio"
3000 libdc1394_indev_deps="libdc1394"
3001 libv4l2_indev_deps="libv4l2"
3002 openal_indev_deps="openal"
3003 opengl_outdev_deps="opengl"
3004 oss_indev_deps_any="soundcard_h sys_soundcard_h"
3005 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
3006 pulse_indev_deps="libpulse"
3007 pulse_outdev_deps="libpulse"
3008 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
3009 qtkit_indev_select="qtkit"
3010 sdl2_outdev_deps="sdl2"
3011 sndio_indev_deps="sndio"
3012 sndio_outdev_deps="sndio"
3013 v4l_indev_deps="linux_videodev_h"
3014 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3015 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3016 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
3017 vfwcap_indev_extralibs="-lavicap32"
3018 xcbgrab_indev_deps="libxcb"
3019 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3020 xv_outdev_extralibs="-lXv -lX11 -lXext"
3021
3022 # protocols
3023 async_protocol_deps="threads"
3024 bluray_protocol_deps="libbluray"
3025 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
3026 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3027 ffrtmpcrypt_protocol_select="tcp_protocol"
3028 ffrtmphttp_protocol_deps="!librtmp_protocol"
3029 ffrtmphttp_protocol_select="http_protocol"
3030 ftp_protocol_select="tcp_protocol"
3031 gopher_protocol_select="network"
3032 http_protocol_select="tcp_protocol"
3033 httpproxy_protocol_select="tcp_protocol"
3034 https_protocol_select="tls_protocol"
3035 icecast_protocol_select="http_protocol"
3036 librtmp_protocol_deps="librtmp"
3037 librtmpe_protocol_deps="librtmp"
3038 librtmps_protocol_deps="librtmp"
3039 librtmpt_protocol_deps="librtmp"
3040 librtmpte_protocol_deps="librtmp"
3041 libsmbclient_protocol_deps="libsmbclient gplv3"
3042 libssh_protocol_deps="libssh"
3043 mmsh_protocol_select="http_protocol"
3044 mmst_protocol_select="network"
3045 rtmp_protocol_deps="!librtmp_protocol"
3046 rtmp_protocol_select="tcp_protocol"
3047 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3048 rtmps_protocol_deps="!librtmp_protocol"
3049 rtmps_protocol_select="tls_protocol"
3050 rtmpt_protocol_select="ffrtmphttp_protocol"
3051 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3052 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3053 rtp_protocol_select="udp_protocol"
3054 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3055 sctp_protocol_select="network"
3056 srtp_protocol_select="rtp_protocol srtp"
3057 tcp_protocol_select="network"
3058 tls_gnutls_protocol_deps="gnutls !tls_schannel_protocol !tls_securetransport_protocol"
3059 tls_gnutls_protocol_select="tcp_protocol"
3060 tls_openssl_protocol_deps="openssl !tls_schannel_protocol !tls_securetransport_protocol !tls_gnutls_protocol"
3061 tls_openssl_protocol_select="tcp_protocol"
3062 tls_schannel_protocol_deps="schannel"
3063 tls_schannel_protocol_select="tcp_protocol"
3064 tls_securetransport_protocol_deps="securetransport"
3065 tls_securetransport_protocol_select="tcp_protocol"
3066 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
3067 udp_protocol_select="network"
3068 udplite_protocol_select="network"
3069 unix_protocol_deps="sys_un_h"
3070 unix_protocol_select="network"
3071
3072 # filters
3073 afftfilt_filter_deps="avcodec"
3074 afftfilt_filter_select="fft"
3075 amovie_filter_deps="avcodec avformat"
3076 aresample_filter_deps="swresample"
3077 ass_filter_deps="libass"
3078 atempo_filter_deps="avcodec"
3079 atempo_filter_select="rdft"
3080 azmq_filter_deps="libzmq"
3081 blackframe_filter_deps="gpl"
3082 boxblur_filter_deps="gpl"
3083 bs2b_filter_deps="libbs2b"
3084 colormatrix_filter_deps="gpl"
3085 cover_rect_filter_deps="avcodec avformat gpl"
3086 cropdetect_filter_deps="gpl"
3087 deinterlace_qsv_filter_deps="libmfx"
3088 deinterlace_vaapi_filter_deps="vaapi"
3089 delogo_filter_deps="gpl"
3090 deshake_filter_select="pixelutils"
3091 drawtext_filter_deps="libfreetype"
3092 eq_filter_deps="gpl"
3093 fftfilt_filter_deps="avcodec"
3094 fftfilt_filter_select="rdft"
3095 find_rect_filter_deps="avcodec avformat gpl"
3096 firequalizer_filter_deps="avcodec"
3097 firequalizer_filter_select="rdft"
3098 flite_filter_deps="libflite"
3099 framerate_filter_select="pixelutils"
3100 frei0r_filter_deps="frei0r dlopen"
3101 frei0r_src_filter_deps="frei0r dlopen"
3102 fspp_filter_deps="gpl"
3103 geq_filter_deps="gpl"
3104 histeq_filter_deps="gpl"
3105 hqdn3d_filter_deps="gpl"
3106 interlace_filter_deps="gpl"
3107 kerndeint_filter_deps="gpl"
3108 ladspa_filter_deps="ladspa dlopen"
3109 mcdeint_filter_deps="avcodec gpl"
3110 movie_filter_deps="avcodec avformat"
3111 mpdecimate_filter_deps="gpl"
3112 mpdecimate_filter_select="pixelutils"
3113 mptestsrc_filter_deps="gpl"
3114 negate_filter_deps="lut_filter"
3115 nnedi_filter_deps="gpl"
3116 ocr_filter_deps="libtesseract"
3117 ocv_filter_deps="libopencv"
3118 owdenoise_filter_deps="gpl"
3119 pan_filter_deps="swresample"
3120 perspective_filter_deps="gpl"
3121 phase_filter_deps="gpl"
3122 pp7_filter_deps="gpl"
3123 pp_filter_deps="gpl postproc"
3124 pullup_filter_deps="gpl"
3125 removelogo_filter_deps="avcodec avformat swscale"
3126 repeatfields_filter_deps="gpl"
3127 resample_filter_deps="avresample"
3128 rubberband_filter_deps="librubberband"
3129 sab_filter_deps="gpl swscale"
3130 scale2ref_filter_deps="swscale"
3131 scale_filter_deps="swscale"
3132 scale_qsv_filter_deps="libmfx"
3133 select_filter_select="pixelutils"
3134 showcqt_filter_deps="avcodec avformat swscale"
3135 showcqt_filter_select="fft"
3136 showfreqs_filter_deps="avcodec"
3137 showfreqs_filter_select="fft"
3138 showspectrum_filter_deps="avcodec"
3139 showspectrum_filter_select="fft"
3140 showspectrumpic_filter_deps="avcodec"
3141 showspectrumpic_filter_select="fft"
3142 signature_filter_deps="gpl avcodec avformat"
3143 smartblur_filter_deps="gpl swscale"
3144 sofalizer_filter_deps="netcdf avcodec"
3145 sofalizer_filter_select="fft"
3146 spectrumsynth_filter_deps="avcodec"
3147 spectrumsynth_filter_select="fft"
3148 spp_filter_deps="gpl avcodec"
3149 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3150 stereo3d_filter_deps="gpl"
3151 subtitles_filter_deps="avformat avcodec libass"
3152 super2xsai_filter_deps="gpl"
3153 pixfmts_super2xsai_test_deps="super2xsai_filter"
3154 tinterlace_filter_deps="gpl"
3155 tinterlace_merge_test_deps="tinterlace_filter"
3156 tinterlace_pad_test_deps="tinterlace_filter"
3157 uspp_filter_deps="gpl avcodec"
3158 vaguedenoiser_filter_deps="gpl"
3159 vidstabdetect_filter_deps="libvidstab"
3160 vidstabtransform_filter_deps="libvidstab"
3161 zmq_filter_deps="libzmq"
3162 zoompan_filter_deps="swscale"
3163 zscale_filter_deps="libzimg"
3164 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3165
3166 # examples
3167 avio_dir_cmd_deps="avformat avutil"
3168 avio_reading_deps="avformat avcodec avutil"
3169 decode_audio_example_deps="avcodec avutil"
3170 decode_video_example_deps="avcodec avutil"
3171 demuxing_decoding_example_deps="avcodec avformat avutil"
3172 encode_audio_example_deps="avcodec avutil"
3173 encode_video_example_deps="avcodec avutil"
3174 extract_mvs_example_deps="avcodec avformat avutil"
3175 filter_audio_example_deps="avfilter avutil"
3176 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3177 filtering_video_example_deps="avfilter avcodec avformat avutil"
3178 http_multiclient_example_deps="avformat avutil fork"
3179 metadata_example_deps="avformat avutil"
3180 muxing_example_deps="avcodec avformat avutil swscale"
3181 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3182 remuxing_example_deps="avcodec avformat avutil"
3183 resampling_audio_example_deps="avutil swresample"
3184 scaling_video_example_deps="avutil swscale"
3185 transcode_aac_example_deps="avcodec avformat swresample"
3186 transcoding_example_deps="avfilter avcodec avformat avutil"
3187
3188 # libraries, in linking order
3189 avcodec_deps="avutil"
3190 avdevice_deps="avformat avcodec avutil"
3191 avfilter_deps="avutil"
3192 avformat_deps="avcodec avutil"
3193 avresample_deps="avutil"
3194 postproc_deps="avutil gpl"
3195 swresample_deps="avutil"
3196 swscale_deps="avutil"
3197
3198 # programs
3199 ffmpeg_deps="avcodec avfilter avformat swresample"
3200 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3201                null_filter
3202                trim_filter"
3203 ffplay_deps="avcodec avformat swscale swresample sdl2"
3204 ffplay_extralibs='$sdl2_extralibs'
3205 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3206 ffprobe_deps="avcodec avformat"
3207 ffserver_deps="avformat fork sarestart"
3208 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3209
3210 # documentation
3211 podpages_deps="perl"
3212 manpages_deps="perl pod2man"
3213 htmlpages_deps="perl"
3214 htmlpages_deps_any="makeinfo_html texi2html"
3215 txtpages_deps="perl makeinfo"
3216 doc_deps_any="manpages htmlpages podpages txtpages"
3217
3218 # default parameters
3219
3220 logfile="config.log"
3221
3222 # installation paths
3223 prefix_default="/usr/local"
3224 bindir_default='${prefix}/bin'
3225 datadir_default='${prefix}/share/ffmpeg'
3226 docdir_default='${prefix}/share/doc/ffmpeg'
3227 incdir_default='${prefix}/include'
3228 libdir_default='${prefix}/lib'
3229 mandir_default='${prefix}/share/man'
3230
3231 # toolchain
3232 ar_default="ar"
3233 cc_default="gcc"
3234 cxx_default="g++"
3235 host_cc_default="gcc"
3236 doxygen_default="doxygen"
3237 install="install"
3238 ln_s_default="ln -s -f"
3239 nm_default="nm -g"
3240 objformat="elf"
3241 pkg_config_default=pkg-config
3242 ranlib_default="ranlib"
3243 strip_default="strip"
3244 version_script='--version-script'
3245 yasmexe_default="yasm"
3246 windres_default="windres"
3247
3248 # OS
3249 target_os_default=$(tolower $(uname -s))
3250 host_os=$target_os_default
3251
3252 # machine
3253 if test "$target_os_default" = aix; then
3254     arch_default=$(uname -p)
3255     strip_default="strip -X32_64"
3256 else
3257     arch_default=$(uname -m)
3258 fi
3259 cpu="generic"
3260 intrinsics="none"
3261
3262 # configurable options
3263 enable $PROGRAM_LIST
3264 enable $DOCUMENT_LIST
3265 enable $EXAMPLE_LIST
3266 enable $(filter_out avresample $LIBRARY_LIST)
3267 enable stripping
3268
3269 enable asm
3270 enable debug
3271 enable doc
3272 enable faan faandct faanidct
3273 enable optimizations
3274 enable runtime_cpudetect
3275 enable safe_bitstream_reader
3276 enable static
3277 enable swscale_alpha
3278 enable valgrind_backtrace
3279
3280 sws_max_filter_size_default=256
3281 set_default sws_max_filter_size
3282
3283 # build settings
3284 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3285 LIBPREF="lib"
3286 LIBSUF=".a"
3287 FULLNAME='$(NAME)$(BUILDSUF)'
3288 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3289 SLIBPREF="lib"
3290 SLIBSUF=".so"
3291 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3292 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3293 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3294 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3295 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3296 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3297 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3298
3299 asflags_filter=echo
3300 cflags_filter=echo
3301 ldflags_filter=echo
3302
3303 AS_C='-c'
3304 AS_O='-o $@'
3305 CC_C='-c'
3306 CC_E='-E -o $@'
3307 CC_O='-o $@'
3308 CXX_C='-c'
3309 CXX_O='-o $@'
3310 OBJCC_C='-c'
3311 OBJCC_E='-E -o $@'
3312 OBJCC_O='-o $@'
3313 LD_O='-o $@'
3314 LD_LIB='-l%'
3315 LD_PATH='-L'
3316 HOSTCC_C='-c'
3317 HOSTCC_E='-E -o $@'
3318 HOSTCC_O='-o $@'
3319 HOSTLD_O='-o $@'
3320
3321 host_extralibs='-lm'
3322 host_cflags_filter=echo
3323 host_ldflags_filter=echo
3324
3325 target_path='$(CURDIR)'
3326
3327 # since the object filename is not given with the -MM flag, the compiler
3328 # is only able to print the basename, and we must add the path ourselves
3329 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3330 DEPFLAGS='-MM'
3331
3332 # find source path
3333 if test -f configure; then
3334     source_path=.
3335 else
3336     source_path=$(cd $(dirname "$0"); pwd)
3337     case "$source_path" in
3338         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3339     esac
3340     test -e "$source_path/config.h" &&
3341         die "Out of tree builds are impossible with config.h in source dir."
3342 fi
3343
3344 for v in "$@"; do
3345     r=${v#*=}
3346     l=${v%"$r"}
3347     r=$(sh_quote "$r")
3348     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3349 done
3350
3351 find_things(){
3352     thing=$1
3353     pattern=$2
3354     file=$source_path/$3
3355     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3356 }
3357
3358 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3359 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3360 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3361 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3362 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3363 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3364 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3365 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3366 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3367
3368 find_things_extern(){
3369     thing=$1
3370     pattern=$2
3371     file=$source_path/$3
3372     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3373 }
3374
3375 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3376 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3377
3378 ALL_COMPONENTS="
3379     $BSF_LIST
3380     $DECODER_LIST
3381     $DEMUXER_LIST
3382     $ENCODER_LIST
3383     $FILTER_LIST
3384     $HWACCEL_LIST
3385     $INDEV_LIST
3386     $MUXER_LIST
3387     $OUTDEV_LIST
3388     $PARSER_LIST
3389     $PROTOCOL_LIST
3390 "
3391
3392 for n in $COMPONENT_LIST; do
3393     v=$(toupper ${n%s})_LIST
3394     eval enable \$$v
3395     eval ${n}_if_any="\$$v"
3396 done
3397
3398 enable $ARCH_EXT_LIST
3399
3400 die_unknown(){
3401     echo "Unknown option \"$1\"."
3402     echo "See $0 --help for available options."
3403     exit 1
3404 }
3405
3406 print_in_columns() {
3407     cols=$(expr $ncols / 24)
3408     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3409 }
3410
3411 show_list() {
3412     suffix=_$1
3413     shift
3414     echo $* | sed s/$suffix//g | print_in_columns
3415     exit 0
3416 }
3417
3418 rand_list(){
3419     IFS=', '
3420     set -- $*
3421     unset IFS
3422     for thing; do
3423         comp=${thing%:*}
3424         prob=${thing#$comp}
3425         prob=${prob#:}
3426         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3427         echo "prob ${prob:-0.5}"
3428         printf '%s\n' $comp
3429     done
3430 }
3431
3432 do_random(){
3433     action=$1
3434     shift
3435     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3436     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3437 }
3438
3439 for opt do
3440     optval="${opt#*=}"
3441     case "$opt" in
3442         --extra-ldflags=*)
3443             add_ldflags $optval
3444         ;;
3445         --extra-ldexeflags=*)
3446             add_ldexeflags $optval
3447         ;;
3448         --extra-ldlibflags=*)
3449             add_ldlibflags $optval
3450         ;;
3451         --extra-libs=*)
3452             add_extralibs $optval
3453         ;;
3454         --disable-devices)
3455             disable $INDEV_LIST $OUTDEV_LIST
3456         ;;
3457         --enable-debug=*)
3458             debuglevel="$optval"
3459         ;;
3460         --disable-programs)
3461             disable $PROGRAM_LIST
3462         ;;
3463         --disable-everything)
3464             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3465         ;;
3466         --disable-all)
3467             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3468             disable $LIBRARY_LIST $PROGRAM_LIST doc
3469             enable avutil
3470         ;;
3471         --enable-random|--disable-random)
3472             action=${opt%%-random}
3473             do_random ${action#--} $COMPONENT_LIST
3474         ;;
3475         --enable-random=*|--disable-random=*)
3476             action=${opt%%-random=*}
3477             do_random ${action#--} $optval
3478         ;;
3479         --enable-*=*|--disable-*=*)
3480             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3481             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3482             eval list=\$$(toupper $thing)_LIST
3483             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3484             list=$(filter "$name" $list)
3485             [ "$list" = "" ] && warn "Option $opt did not match anything"
3486             $action $list
3487         ;;
3488         --enable-?*|--disable-?*)
3489             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3490             if is_in $option $COMPONENT_LIST; then
3491                 test $action = disable && action=unset
3492                 eval $action \$$(toupper ${option%s})_LIST
3493             elif is_in $option $CMDLINE_SELECT; then
3494                 $action $option
3495             else
3496                 die_unknown $opt
3497             fi
3498         ;;
3499         --list-*)
3500             NAME="${opt#--list-}"
3501             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3502             NAME=${NAME%s}
3503             eval show_list $NAME \$$(toupper $NAME)_LIST
3504         ;;
3505         --help|-h) show_help
3506         ;;
3507         --quiet|-q) quiet=yes
3508         ;;
3509         --fatal-warnings) enable fatal_warnings
3510         ;;
3511         *)
3512             optname="${opt%%=*}"
3513             optname="${optname#--}"
3514             optname=$(echo "$optname" | sed 's/-/_/g')
3515             if is_in $optname $CMDLINE_SET; then
3516                 eval $optname='$optval'
3517             elif is_in $optname $CMDLINE_APPEND; then
3518                 append $optname "$optval"
3519             else
3520                 die_unknown $opt
3521             fi
3522         ;;
3523     esac
3524 done
3525
3526 for e in $env; do
3527     eval "export $e"
3528 done
3529
3530 # Mark specifically enabled, but normally autodetected libraries as requested.
3531 for lib in $AUTODETECT_LIBS; do
3532     enabled $lib && request $lib
3533 done
3534
3535 # Enable platform codecs by default.
3536 enable_weak audiotoolbox
3537
3538 # Enable hwaccels by default.
3539 enable_weak d3d11va dxva2 vaapi vda vdpau videotoolbox_hwaccel xvmc
3540 enable_weak xlib
3541
3542 enable_weak cuda cuvid nvenc vda_framework videotoolbox videotoolbox_encoder
3543
3544 disabled logging && logfile=/dev/null
3545
3546 die_license_disabled() {
3547     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3548 }
3549
3550 die_license_disabled_gpl() {
3551     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3552 }
3553
3554 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3555 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3556
3557 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3558 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3559
3560 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3561
3562 # Disable all the library-specific components if the library itself
3563 # is disabled, see AVCODEC_LIST and following _LIST variables.
3564
3565 disable_components(){
3566     disabled ${1} && disable $(
3567         eval components="\$$(toupper ${1})_COMPONENTS"
3568         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3569     )
3570 }
3571
3572 map 'disable_components $v' $LIBRARY_LIST
3573
3574 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3575 set >> $logfile
3576
3577 test -n "$valgrind" && toolchain="valgrind-memcheck"
3578
3579 case "$toolchain" in
3580     *-asan)
3581         cc_default="${toolchain%-asan}"
3582         add_cflags  -fsanitize=address
3583         add_ldflags -fsanitize=address
3584     ;;
3585     *-msan)
3586         cc_default="${toolchain%-msan}"
3587         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3588         add_ldflags -fsanitize=memory
3589     ;;
3590     *-tsan)
3591         cc_default="${toolchain%-tsan}"
3592         add_cflags  -fsanitize=thread -fPIE
3593         add_ldflags -fsanitize=thread -pie
3594         case "$toolchain" in
3595             gcc-tsan)
3596                 add_cflags  -fPIC
3597                 add_ldflags -fPIC
3598                 ;;
3599         esac
3600     ;;
3601     *-usan)
3602         cc_default="${toolchain%-usan}"
3603         add_cflags  -fsanitize=undefined
3604         add_ldflags -fsanitize=undefined
3605     ;;
3606     valgrind-*)
3607         target_exec_default="valgrind"
3608         case "$toolchain" in
3609             valgrind-massif)
3610                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3611                 ;;
3612             valgrind-memcheck)
3613                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3614                 ;;
3615         esac
3616     ;;
3617     msvc)
3618         # Check whether the current MSVC version needs the C99 converter.
3619         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3620         # support enough of C99 to build ffmpeg. Default to the new
3621         # behaviour if the regexp was unable to match anything, since this
3622         # successfully parses the version number of existing supported
3623         # versions that require the converter (MSVC 2010 and 2012).
3624         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3625         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3626             cc_default="cl"
3627             cxx_default="cl"
3628         else
3629             cc_default="c99wrap cl"
3630             cxx_default="c99wrap cl"
3631         fi
3632         ld_default="$source_path/compat/windows/mslink"
3633         nm_default="dumpbin -symbols"
3634         ar_default="lib"
3635         case "$arch" in
3636         arm*)
3637             as_default="armasm"
3638             ;;
3639         esac
3640         target_os_default="win32"
3641         # Use a relative path for TMPDIR. This makes sure all the
3642         # ffconf temp files are written with a relative path, avoiding
3643         # issues with msys/win32 path conversion for MSVC parameters
3644         # such as -Fo<file> or -out:<file>.
3645         TMPDIR=.
3646     ;;
3647     icl)
3648         cc_default="icl"
3649         ld_default="xilink"
3650         nm_default="dumpbin -symbols"
3651         ar_default="xilib"
3652         target_os_default="win32"
3653         TMPDIR=.
3654     ;;
3655     gcov)
3656         add_cflags  -fprofile-arcs -ftest-coverage
3657         add_ldflags -fprofile-arcs -ftest-coverage
3658     ;;
3659     llvm-cov)
3660         add_cflags -fprofile-arcs -ftest-coverage
3661         add_ldflags --coverage
3662     ;;
3663     hardened)
3664         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3665         add_cflags   -fno-strict-overflow -fstack-protector-all
3666         add_ldflags  -Wl,-z,relro -Wl,-z,now
3667         add_cflags   -fPIE
3668         add_ldexeflags -fPIE -pie
3669     ;;
3670     ?*)
3671         die "Unknown toolchain $toolchain"
3672     ;;
3673 esac
3674
3675 test -n "$cross_prefix" && enable cross_compile
3676
3677 if enabled cross_compile; then
3678     test -n "$arch" && test -n "$target_os" ||
3679         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3680 fi
3681
3682 ar_default="${cross_prefix}${ar_default}"
3683 cc_default="${cross_prefix}${cc_default}"
3684 cxx_default="${cross_prefix}${cxx_default}"
3685 nm_default="${cross_prefix}${nm_default}"
3686 pkg_config_default="${cross_prefix}${pkg_config_default}"
3687 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3688     ranlib_default="${cross_prefix}${ranlib_default} -D"
3689 else
3690     ranlib_default="${cross_prefix}${ranlib_default}"
3691 fi
3692 strip_default="${cross_prefix}${strip_default}"
3693 windres_default="${cross_prefix}${windres_default}"
3694
3695 sysinclude_default="${sysroot}/usr/include"
3696
3697 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3698     target_exec target_os yasmexe
3699 enabled cross_compile || host_cc_default=$cc
3700 set_default host_cc
3701
3702 pkg_config_fail_message=""
3703 if ! $pkg_config --version >/dev/null 2>&1; then
3704     warn "$pkg_config not found, library detection may fail."
3705     pkg_config=false
3706 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3707     pkg_config_fail_message="
3708 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3709 fi
3710
3711 if test $doxygen != $doxygen_default && \
3712   ! $doxygen --version >/dev/null 2>&1; then
3713     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3714 fi
3715
3716 exesuf() {
3717     case $1 in
3718         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3719     esac
3720 }
3721
3722 EXESUF=$(exesuf $target_os)
3723 HOSTEXESUF=$(exesuf $host_os)
3724
3725 # set temporary file name
3726 : ${TMPDIR:=$TEMPDIR}
3727 : ${TMPDIR:=$TMP}
3728 : ${TMPDIR:=/tmp}
3729
3730 if [ -n "$tempprefix" ] ; then
3731     mktemp(){
3732         echo $tempprefix.${HOSTNAME}.${UID}
3733     }
3734 elif ! check_cmd mktemp -u XXXXXX; then
3735     # simple replacement for missing mktemp
3736     # NOT SAFE FOR GENERAL USE
3737     mktemp(){
3738         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3739     }
3740 fi
3741
3742 tmpfile(){
3743     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3744         (set -C; exec > $tmp) 2>/dev/null ||
3745         die "Unable to create temporary file in $TMPDIR."
3746     append TMPFILES $tmp
3747     eval $1=$tmp
3748 }
3749
3750 trap 'rm -f -- $TMPFILES' EXIT
3751
3752 tmpfile TMPASM .asm
3753 tmpfile TMPC   .c
3754 tmpfile TMPCPP .cpp
3755 tmpfile TMPE   $EXESUF
3756 tmpfile TMPH   .h
3757 tmpfile TMPM   .m
3758 tmpfile TMPO   .o
3759 tmpfile TMPS   .S
3760 tmpfile TMPSH  .sh
3761 tmpfile TMPV   .ver
3762
3763 unset -f mktemp
3764
3765 chmod +x $TMPE
3766
3767 # make sure we can execute files in $TMPDIR
3768 cat > $TMPSH 2>> $logfile <<EOF
3769 #! /bin/sh
3770 EOF
3771 chmod +x $TMPSH >> $logfile 2>&1
3772 if ! $TMPSH >> $logfile 2>&1; then
3773     cat <<EOF
3774 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3775 variable to another directory and make sure that it is not mounted noexec.
3776 EOF
3777     die "Sanity test failed."
3778 fi
3779
3780 armasm_flags(){
3781     for flag; do
3782         case $flag in
3783             # Filter out MSVC cl.exe options from cflags that shouldn't
3784             # be passed to gas-preprocessor
3785             -M[TD]*)                                            ;;
3786             *)                  echo $flag                      ;;
3787         esac
3788    done
3789 }
3790
3791 ccc_flags(){
3792     for flag; do
3793         case $flag in
3794             -std=c99)           echo -c99                       ;;
3795             -mcpu=*)            echo -arch ${flag#*=}           ;;
3796             -mieee)             echo -ieee                      ;;
3797             -O*|-fast)          echo $flag                      ;;
3798             -fno-math-errno)    echo -assume nomath_errno       ;;
3799             -g)                 echo -g3                        ;;
3800             -Wall)              echo -msg_enable level2         ;;
3801             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3802             -Wl,*)              echo $flag                      ;;
3803             -f*|-W*)                                            ;;
3804             *)                  echo $flag                      ;;
3805         esac
3806    done
3807 }
3808
3809 cparser_flags(){
3810     for flag; do
3811         case $flag in
3812             -Wno-switch)             echo -Wno-switch-enum ;;
3813             -Wno-format-zero-length) ;;
3814             -Wdisabled-optimization) ;;
3815             -Wno-pointer-sign)       echo -Wno-other ;;
3816             *)                       echo $flag ;;
3817         esac
3818     done
3819 }
3820
3821 msvc_common_flags(){
3822     for flag; do
3823         case $flag in
3824             # In addition to specifying certain flags under the compiler
3825             # specific filters, they must be specified here as well or else the
3826             # generic catch all at the bottom will print the original flag.
3827             -Wall)                ;;
3828             -std=c99)             ;;
3829             # Common flags
3830             -fomit-frame-pointer) ;;
3831             -g)                   echo -Z7 ;;
3832             -fno-math-errno)      ;;
3833             -fno-common)          ;;
3834             -fno-signed-zeros)    ;;
3835             -fPIC)                ;;
3836             -mthumb)              ;;
3837             -march=*)             ;;
3838             -lz)                  echo zlib.lib ;;
3839             -lavicap32)           echo vfw32.lib user32.lib ;;
3840             -lx264)               echo libx264.lib ;;
3841             -lstdc++)             ;;
3842             -l*)                  echo ${flag#-l}.lib ;;
3843             -LARGEADDRESSAWARE)   echo $flag ;;
3844             -L*)                  echo -libpath:${flag#-L} ;;
3845             *)                    echo $flag ;;
3846         esac
3847     done
3848 }
3849
3850 msvc_flags(){
3851     msvc_common_flags "$@"
3852     for flag; do
3853         case $flag in
3854             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3855                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3856                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3857                                        -wd4307 \
3858                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
3859         esac
3860     done
3861 }
3862
3863 icl_flags(){
3864     msvc_common_flags "$@"
3865     for flag; do
3866         case $flag in
3867             # Despite what Intel's documentation says -Wall, which is supported
3868             # on Windows, does enable remarks so disable them here.
3869             -Wall)                echo $flag -Qdiag-disable:remark ;;
3870             -std=c99)             echo -Qstd=c99 ;;
3871             -flto)                echo -ipo ;;
3872         esac
3873     done
3874 }
3875
3876 icc_flags(){
3877     for flag; do
3878         case $flag in
3879             -flto)                echo -ipo ;;
3880             *)                    echo $flag ;;
3881         esac
3882     done
3883 }
3884
3885 pgi_flags(){
3886     for flag; do
3887         case $flag in
3888             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3889             -fomit-frame-pointer) echo -Mnoframe ;;
3890             -g)                   echo -gopt ;;
3891             *)                    echo $flag ;;
3892         esac
3893     done
3894 }
3895
3896 suncc_flags(){
3897     for flag; do
3898         case $flag in
3899             -march=*|-mcpu=*)
3900                 case "${flag#*=}" in
3901                     native)                   echo -xtarget=native       ;;
3902                     v9|niagara)               echo -xarch=sparc          ;;
3903                     ultrasparc)               echo -xarch=sparcvis       ;;
3904                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3905                     i586|pentium)             echo -xchip=pentium        ;;
3906                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3907                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3908                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3909                     pentium4*)          echo -xtarget=pentium4           ;;
3910                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3911                     *-sse3)             echo -xarch=sse3                 ;;
3912                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3913                     bonnell)                   echo -xarch=ssse3         ;;
3914                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3915                     westmere)                  echo -xtarget=westmere    ;;
3916                     silvermont)                echo -xarch=sse4_2        ;;
3917                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3918                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
3919                                                echo -xarch=avx           ;;
3920                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3921                     btver1)                    echo -xarch=amdsse4a      ;;
3922                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
3923                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3924                     k8|opteron|athlon64|athlon-fx)
3925                                                echo -xarch=sse2a         ;;
3926                     athlon*)                   echo -xarch=pentium_proa  ;;
3927                 esac
3928                 ;;
3929             -std=c99)             echo -xc99              ;;
3930             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3931             -fPIC)                echo -KPIC -xcode=pic32 ;;
3932             -W*,*)                echo $flag              ;;
3933             -f*-*|-W*|-mimpure-text)                      ;;
3934             -shared)              echo -G                 ;;
3935             *)                    echo $flag              ;;
3936         esac
3937     done
3938 }
3939
3940 tms470_flags(){
3941     for flag; do
3942         case $flag in
3943             -march=*|-mcpu=*)
3944                 case "${flag#*=}" in
3945                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3946                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3947                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3948                     armv6*|arm11*)          echo -mv=6   ;;
3949                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3950                                             echo -mv=5e  ;;
3951                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3952                 esac
3953                 ;;
3954             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3955             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3956             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3957             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3958             -msoft-float)   echo --float_support=vfplib       ;;
3959             -O[0-3]|-mf=*)  echo $flag                        ;;
3960             -g)             echo -g -mn                       ;;
3961             -pds=*)         echo $flag                        ;;
3962             -D*|-I*)        echo $flag                        ;;
3963             --gcc|--abi=*)  echo $flag                        ;;
3964             -me)            echo $flag                        ;;
3965         esac
3966     done
3967 }
3968
3969 probe_cc(){
3970     pfx=$1
3971     _cc=$2
3972     first=$3
3973
3974     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3975     unset _ld_o _ldflags _ld_lib _ld_path
3976     unset _depflags _DEPCMD _DEPFLAGS
3977     _flags_filter=echo
3978
3979     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3980         true # no-op to avoid reading stdin in following checks
3981     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3982         _type=llvm_gcc
3983         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3984         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3985         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3986         _cflags_speed='-O3'
3987         _cflags_size='-Os'
3988     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3989         _type=gcc
3990         gcc_version=$($_cc --version | head -n1)
3991         gcc_basever=$($_cc -dumpversion)
3992         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3993         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3994         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3995         case $gcc_basever in
3996             2) ;;
3997             2.*) ;;
3998             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
3999         esac
4000         if [ "$first" = true ]; then
4001             case $gcc_basever in
4002                 4.2*)
4003                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4004             esac
4005         fi
4006         _cflags_speed='-O3'
4007         _cflags_size='-Os'
4008     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4009         _type=icc
4010         _ident=$($_cc --version | head -n1)
4011         _depflags='-MMD'
4012         _cflags_speed='-O3'
4013         _cflags_size='-Os'
4014         _cflags_noopt='-O1'
4015         _flags_filter=icc_flags
4016     elif $_cc -v 2>&1 | grep -q xlc; then
4017         _type=xlc
4018         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4019         _cflags_speed='-O5'
4020         _cflags_size='-O5 -qcompact'
4021     elif $_cc -V 2>/dev/null | grep -q Compaq; then
4022         _type=ccc
4023         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
4024         _DEPFLAGS='-M'
4025         _cflags_speed='-fast'
4026         _cflags_size='-O1'
4027         _flags_filter=ccc_flags
4028     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4029         test -d "$sysroot" || die "No valid sysroot specified."
4030         _type=armcc
4031         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4032         armcc_conf="$PWD/armcc.conf"
4033         $_cc --arm_linux_configure                 \
4034              --arm_linux_config_file="$armcc_conf" \
4035              --configure_sysroot="$sysroot"        \
4036              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4037              die "Error creating armcc configuration file."
4038         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4039         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4040         as_default="${cross_prefix}gcc"
4041         _depflags='-MMD'
4042         _cflags_speed='-O3'
4043         _cflags_size='-Os'
4044     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
4045         _type=tms470
4046         _ident=$($_cc -version | head -n1 | tr -s ' ')
4047         _flags='--gcc --abi=eabi -me'
4048         _cc_e='-ppl -fe=$@'
4049         _cc_o='-fe=$@'
4050         _depflags='-ppa -ppd=$(@:.o=.d)'
4051         _cflags_speed='-O3 -mf=5'
4052         _cflags_size='-O3 -mf=2'
4053         _flags_filter=tms470_flags
4054     elif $_cc -v 2>&1 | grep -q clang; then
4055         _type=clang
4056         _ident=$($_cc --version 2>/dev/null | head -n1)
4057         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4058         _cflags_speed='-O3'
4059         _cflags_size='-Oz'
4060     elif $_cc -V 2>&1 | grep -q Sun; then
4061         _type=suncc
4062         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4063         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4064         _DEPFLAGS='-xM1 -xc99'
4065         _ldflags='-std=c99'
4066         _cflags_speed='-O5'
4067         _cflags_size='-O5 -xspace'
4068         _flags_filter=suncc_flags
4069     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4070         _type=pathscale
4071         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4072         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4073         _cflags_speed='-O2'
4074         _cflags_size='-Os'
4075         _flags_filter='filter_out -Wdisabled-optimization'
4076     elif $_cc -v 2>&1 | grep -q Open64; then
4077         _type=open64
4078         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4079         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4080         _cflags_speed='-O2'
4081         _cflags_size='-Os'
4082         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4083     elif $_cc -V 2>&1 | grep -q Portland; then
4084         _type=pgi
4085         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
4086         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
4087         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
4088         _cflags_size="-O2 -Munroll=c:1 $opt_common"
4089         _cflags_noopt="-O"
4090         _flags_filter=pgi_flags
4091     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4092         _type=armasm
4093         _ident=$($_cc | head -n1)
4094         # 4509: "This form of conditional instruction is deprecated"
4095         _flags="-nologo -ignore 4509"
4096         _flags_filter=armasm_flags
4097     elif $_cc 2>&1 | grep -q Intel; then
4098         _type=icl
4099         _ident=$($_cc 2>&1 | head -n1)
4100         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4101         # Not only is O3 broken on 13.x+ but it is slower on all previous
4102         # versions (tested) as well.
4103         _cflags_speed="-O2"
4104         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4105         if $_cc 2>&1 | grep -q Linker; then
4106             _ld_o='-out:$@'
4107         else
4108             _ld_o='-Fe$@'
4109         fi
4110         _cc_o='-Fo$@'
4111         _cc_e='-P'
4112         _flags_filter=icl_flags
4113         _ld_lib='lib%.a'
4114         _ld_path='-libpath:'
4115         # -Qdiag-error to make icl error when seeing certain unknown arguments
4116         _flags='-nologo -Qdiag-error:4044,10157'
4117         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4118         # with MSVC which enables it by default.
4119         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4120         disable stripping
4121     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4122         # lld can emulate multiple different linkers; in ms link.exe mode,
4123         # the -? parameter gives the help output which contains an identifyable
4124         # string, while it gives an error in other modes.
4125         _type=lld-link
4126         # The link.exe mode doesn't have a switch for getting the version,
4127         # but we can force it back to gnu mode and get the version from there.
4128         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4129         _ld_o='-out:$@'
4130         _flags_filter=msvc_flags
4131         _ld_lib='lib%.a'
4132         _ld_path='-libpath:'
4133     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4134         _type=msvc
4135         _ident=$($_cc 2>&1 | head -n1)
4136         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4137         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4138         _cflags_speed="-O2"
4139         _cflags_size="-O1"
4140         if $_cc -nologo- 2>&1 | grep -q Linker; then
4141             _ld_o='-out:$@'
4142         else
4143             _ld_o='-Fe$@'
4144         fi
4145         _cc_o='-Fo$@'
4146         _cc_e='-P -Fi$@'
4147         _flags_filter=msvc_flags
4148         _ld_lib='lib%.a'
4149         _ld_path='-libpath:'
4150         _flags='-nologo'
4151         disable stripping
4152     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4153         _type=cparser
4154         _ident=$($_cc --version | head -n1)
4155         _depflags='-MMD'
4156         _cflags_speed='-O4'
4157         _cflags_size='-O2'
4158         _flags_filter=cparser_flags
4159     fi
4160
4161     eval ${pfx}_type=\$_type
4162     eval ${pfx}_ident=\$_ident
4163 }
4164
4165 set_ccvars(){
4166     eval ${1}_C=\${_cc_c-\${${1}_C}}
4167     eval ${1}_E=\${_cc_e-\${${1}_E}}
4168     eval ${1}_O=\${_cc_o-\${${1}_O}}
4169
4170     if [ -n "$_depflags" ]; then
4171         eval ${1}_DEPFLAGS=\$_depflags
4172     else
4173         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4174         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4175         eval DEP${1}FLAGS=\$_flags
4176     fi
4177 }
4178
4179 probe_cc cc "$cc" "true"
4180 cflags_filter=$_flags_filter
4181 cflags_speed=$_cflags_speed
4182 cflags_size=$_cflags_size
4183 cflags_noopt=$_cflags_noopt
4184 add_cflags $_flags $_cflags
4185 cc_ldflags=$_ldflags
4186 set_ccvars CC
4187 set_ccvars CXX
4188
4189 probe_cc hostcc "$host_cc"
4190 host_cflags_filter=$_flags_filter
4191 add_host_cflags  $_flags $_cflags
4192 set_ccvars HOSTCC
4193
4194 test -n "$cc_type" && enable $cc_type ||
4195     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4196
4197 : ${as_default:=$cc}
4198 : ${objcc_default:=$cc}
4199 : ${dep_cc_default:=$cc}
4200 : ${ld_default:=$cc}
4201 : ${host_ld_default:=$host_cc}
4202 set_default ar as objcc dep_cc ld ln_s host_ld windres
4203
4204 probe_cc as "$as"
4205 asflags_filter=$_flags_filter
4206 add_asflags $_flags $_cflags
4207 set_ccvars AS
4208
4209 probe_cc objcc "$objcc"
4210 objcflags_filter=$_flags_filter
4211 add_objcflags $_flags $_cflags
4212 set_ccvars OBJC
4213
4214 probe_cc ld "$ld"
4215 ldflags_filter=$_flags_filter
4216 add_ldflags $_flags $_ldflags
4217 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4218 LD_O=${_ld_o-$LD_O}
4219 LD_LIB=${_ld_lib-$LD_LIB}
4220 LD_PATH=${_ld_path-$LD_PATH}
4221
4222 probe_cc hostld "$host_ld"
4223 host_ldflags_filter=$_flags_filter
4224 add_host_ldflags $_flags $_ldflags
4225 HOSTLD_O=${_ld_o-$HOSTLD_O}
4226
4227 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4228     probe_cc depcc "$dep_cc"
4229     CCDEP=${_DEPCMD:-$DEPCMD}
4230     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4231     DEPCCFLAGS=$_flags
4232 fi
4233
4234 if $ar 2>&1 | grep -q Microsoft; then
4235     arflags="-nologo"
4236     ar_o='-out:$@'
4237 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
4238     arflags="rq"
4239     ar_o='$@'
4240 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
4241     arflags='-Xany -r -c'
4242     ar_o='$@'
4243 elif $ar 2>&1 | grep -q "\[D\] "; then
4244     arflags="rcD"
4245     ar_o='$@'
4246 else
4247     arflags="rc"
4248     ar_o='$@'
4249 fi
4250
4251 add_cflags $extra_cflags
4252 add_cxxflags $extra_cxxflags
4253 add_objcflags $extra_objcflags
4254 add_asflags $extra_cflags
4255
4256 if test -n "$sysroot"; then
4257     case "$cc_type" in
4258         gcc|llvm_gcc|clang)
4259             add_cppflags --sysroot="$sysroot"
4260             add_ldflags --sysroot="$sysroot"
4261 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
4262             add_cppflags -isysroot "$sysroot"
4263             add_ldflags -isysroot "$sysroot"
4264         ;;
4265         tms470)
4266             add_cppflags -I"$sysinclude"
4267             add_ldflags  --sysroot="$sysroot"
4268         ;;
4269     esac
4270 fi
4271
4272 if test "$cpu" = host; then
4273     enabled cross_compile &&
4274         die "--cpu=host makes no sense when cross-compiling."
4275
4276     case "$cc_type" in
4277         gcc|llvm_gcc)
4278             check_native(){
4279                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4280                 sed -n "/cc1.*$1=/{
4281                             s/.*$1=\\([^ ]*\\).*/\\1/
4282                             p
4283                             q
4284                         }" $TMPE
4285             }
4286             cpu=$(check_native -march || check_native -mcpu)
4287         ;;
4288         clang)
4289             check_native(){
4290                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4291                 sed -n "/cc1.*-target-cpu /{
4292                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4293                             p
4294                             q
4295                         }" $TMPE
4296             }
4297             cpu=$(check_native -march)
4298         ;;
4299     esac
4300
4301     test "${cpu:-host}" = host &&
4302         die "--cpu=host not supported with compiler $cc"
4303 fi
4304
4305 # Deal with common $arch aliases
4306 case "$arch" in
4307     aarch64|arm64)
4308         arch="aarch64"
4309     ;;
4310     arm*|iPad*|iPhone*)
4311         arch="arm"
4312     ;;
4313     mips*|IP*)
4314         case "$arch" in
4315         *el)
4316             add_cppflags -EL
4317             add_ldflags -EL
4318         ;;
4319         *eb)
4320             add_cppflags -EB
4321             add_ldflags -EB
4322         ;;
4323         esac
4324         arch="mips"
4325     ;;
4326     parisc*|hppa*)
4327         arch="parisc"
4328     ;;
4329     "Power Macintosh"|ppc*|powerpc*)
4330         arch="ppc"
4331     ;;
4332     s390|s390x)
4333         arch="s390"
4334     ;;
4335     sh4|sh)
4336         arch="sh4"
4337     ;;
4338     sun4*|sparc*)
4339         arch="sparc"
4340     ;;
4341     tilegx|tile-gx)
4342         arch="tilegx"
4343     ;;
4344     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4345         arch="x86"
4346     ;;
4347 esac
4348
4349 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4350 enable $arch
4351
4352 # Add processor-specific flags
4353 if enabled aarch64; then
4354
4355     case $cpu in
4356         armv*)
4357             cpuflags="-march=$cpu"
4358         ;;
4359         *)
4360             cpuflags="-mcpu=$cpu"
4361         ;;
4362     esac
4363
4364 elif enabled alpha; then
4365
4366     cpuflags="-mcpu=$cpu"
4367
4368 elif enabled arm; then
4369
4370     check_arm_arch() {
4371         check_cpp_condition stddef.h \
4372             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4373             $cpuflags
4374     }
4375
4376     probe_arm_arch() {
4377         if   check_arm_arch 4;        then echo armv4
4378         elif check_arm_arch 4T;       then echo armv4t
4379         elif check_arm_arch 5;        then echo armv5
4380         elif check_arm_arch 5E;       then echo armv5e
4381         elif check_arm_arch 5T;       then echo armv5t
4382         elif check_arm_arch 5TE;      then echo armv5te
4383         elif check_arm_arch 5TEJ;     then echo armv5te
4384         elif check_arm_arch 6;        then echo armv6
4385         elif check_arm_arch 6J;       then echo armv6j
4386         elif check_arm_arch 6K;       then echo armv6k
4387         elif check_arm_arch 6Z;       then echo armv6z
4388         elif check_arm_arch 6ZK;      then echo armv6zk
4389         elif check_arm_arch 6T2;      then echo armv6t2
4390         elif check_arm_arch 7;        then echo armv7
4391         elif check_arm_arch 7A  7_A;  then echo armv7-a
4392         elif check_arm_arch 7S;       then echo armv7-a
4393         elif check_arm_arch 7R  7_R;  then echo armv7-r
4394         elif check_arm_arch 7M  7_M;  then echo armv7-m
4395         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4396         elif check_arm_arch 8A  8_A;  then echo armv8-a
4397         fi
4398     }
4399
4400     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4401
4402     case $cpu in
4403         armv*)
4404             cpuflags="-march=$cpu"
4405             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4406         ;;
4407         *)
4408             cpuflags="-mcpu=$cpu"
4409             case $cpu in
4410                 cortex-a*)                               subarch=armv7a  ;;
4411                 cortex-r*)                               subarch=armv7r  ;;
4412                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4413                 arm11*)                                  subarch=armv6   ;;
4414                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4415                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4416                 *)                             subarch=$(probe_arm_arch) ;;
4417             esac
4418         ;;
4419     esac
4420
4421     case "$subarch" in
4422         armv5t*)    enable fast_clz                ;;
4423         armv[6-8]*)
4424             enable fast_clz
4425             disabled fast_unaligned || enable fast_unaligned
4426             ;;
4427     esac
4428
4429 elif enabled avr32; then
4430
4431     case $cpu in
4432         ap7[02]0[0-2])
4433             subarch="avr32_ap"
4434             cpuflags="-mpart=$cpu"
4435         ;;
4436         ap)
4437             subarch="avr32_ap"
4438             cpuflags="-march=$cpu"
4439         ;;
4440         uc3[ab]*)
4441             subarch="avr32_uc"
4442             cpuflags="-mcpu=$cpu"
4443         ;;
4444         uc)
4445             subarch="avr32_uc"
4446             cpuflags="-march=$cpu"
4447         ;;
4448     esac
4449
4450 elif enabled bfin; then
4451
4452     cpuflags="-mcpu=$cpu"
4453
4454 elif enabled mips; then
4455
4456     cpuflags="-march=$cpu"
4457
4458     if [ "$cpu" != "generic" ]; then
4459         disable mips32r2
4460         disable mips32r5
4461         disable mips64r2
4462         disable mips32r6
4463         disable mips64r6
4464         disable loongson2
4465         disable loongson3
4466
4467         case $cpu in
4468             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4469                 enable mips32r2
4470                 disable msa
4471             ;;
4472             p5600|i6400|p6600)
4473                 disable mipsdsp
4474                 disable mipsdspr2
4475             ;;
4476             loongson*)
4477                 enable loongson2
4478                 enable loongson3
4479                 enable local_aligned_8 local_aligned_16 local_aligned_32
4480                 enable simd_align_16
4481                 enable fast_64bit
4482                 enable fast_clz
4483                 enable fast_cmov
4484                 enable fast_unaligned
4485                 disable aligned_stack
4486                 disable mipsfpu
4487                 disable mipsdsp
4488                 disable mipsdspr2
4489                 case $cpu in
4490                     loongson3*)
4491                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4492                     ;;
4493                     loongson2e)
4494                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4495                     ;;
4496                     loongson2f)
4497                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4498                     ;;
4499                 esac
4500             ;;
4501             *)
4502                 # Unknown CPU. Disable everything.
4503                 warn "unknown CPU. Disabling all MIPS optimizations."
4504                 disable mipsfpu
4505                 disable mipsdsp
4506                 disable mipsdspr2
4507                 disable msa
4508                 disable mmi
4509             ;;
4510         esac
4511
4512         case $cpu in
4513             24kc)
4514                 disable mipsfpu
4515                 disable mipsdsp
4516                 disable mipsdspr2
4517             ;;
4518             24kf*)
4519                 disable mipsdsp
4520                 disable mipsdspr2
4521             ;;
4522             24kec|34kc|1004kc)
4523                 disable mipsfpu
4524                 disable mipsdspr2
4525             ;;
4526             24kef*|34kf*|1004kf*)
4527                 disable mipsdspr2
4528             ;;
4529             74kc)
4530                 disable mipsfpu
4531             ;;
4532             p5600)
4533                 enable mips32r5
4534                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4535             ;;
4536             i6400)
4537                 enable mips64r6
4538                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4539             ;;
4540             p6600)
4541                 enable mips64r6
4542                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4543             ;;
4544         esac
4545     else
4546         # We do not disable anything. Is up to the user to disable the unwanted features.
4547         warn 'generic cpu selected'
4548     fi
4549
4550 elif enabled ppc; then
4551
4552     disable ldbrx
4553
4554     case $(tolower $cpu) in
4555         601|ppc601|powerpc601)
4556             cpuflags="-mcpu=601"
4557             disable altivec
4558         ;;
4559         603*|ppc603*|powerpc603*)
4560             cpuflags="-mcpu=603"
4561             disable altivec
4562         ;;
4563         604*|ppc604*|powerpc604*)
4564             cpuflags="-mcpu=604"
4565             disable altivec
4566         ;;
4567         g3|75*|ppc75*|powerpc75*)
4568             cpuflags="-mcpu=750"
4569             disable altivec
4570         ;;
4571         g4|745*|ppc745*|powerpc745*)
4572             cpuflags="-mcpu=7450"
4573             disable vsx
4574         ;;
4575         74*|ppc74*|powerpc74*)
4576             cpuflags="-mcpu=7400"
4577             disable vsx
4578         ;;
4579         g5|970|ppc970|powerpc970)
4580             cpuflags="-mcpu=970"
4581             disable vsx
4582         ;;
4583         power[3-6]*)
4584             cpuflags="-mcpu=$cpu"
4585             disable vsx
4586         ;;
4587         power[7-8]*)
4588             cpuflags="-mcpu=$cpu"
4589         ;;
4590         cell)
4591             cpuflags="-mcpu=cell"
4592             enable ldbrx
4593             disable vsx
4594         ;;
4595         e500mc)
4596             cpuflags="-mcpu=e500mc"
4597             disable altivec
4598         ;;
4599         e500v2)
4600             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4601             disable altivec
4602             disable dcbzl
4603         ;;
4604         e500)
4605             cpuflags="-mcpu=8540 -mhard-float"
4606             disable altivec
4607             disable dcbzl
4608         ;;
4609     esac
4610
4611 elif enabled sparc; then
4612
4613     case $cpu in
4614         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4615             cpuflags="-mcpu=$cpu"
4616         ;;
4617         ultrasparc*|niagara[234])
4618             cpuflags="-mcpu=$cpu"
4619         ;;
4620     esac
4621
4622 elif enabled x86; then
4623
4624     case $cpu in
4625         i[345]86|pentium)
4626             cpuflags="-march=$cpu"
4627             disable i686
4628             disable mmx
4629         ;;
4630         # targets that do NOT support nopl and conditional mov (cmov)
4631         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4632             cpuflags="-march=$cpu"
4633             disable i686
4634         ;;
4635         # targets that do support nopl and conditional mov (cmov)
4636         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4637         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4638         |amdfam10|barcelona|b[dt]ver*|znver*)
4639             cpuflags="-march=$cpu"
4640             enable i686
4641             enable fast_cmov
4642         ;;
4643         # targets that do support conditional mov but on which it's slow
4644         pentium4|pentium4m|prescott|nocona)
4645             cpuflags="-march=$cpu"
4646             enable i686
4647             disable fast_cmov
4648         ;;
4649     esac
4650
4651 fi
4652
4653 if [ "$cpu" != generic ]; then
4654     add_cflags  $cpuflags
4655     add_asflags $cpuflags
4656     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4657 fi
4658
4659 # compiler sanity check
4660 check_exec <<EOF
4661 int main(void){ return 0; }
4662 EOF
4663 if test "$?" != 0; then
4664     echo "$cc is unable to create an executable file."
4665     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4666         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4667         echo "Only do this if you know what cross compiling means."
4668     fi
4669     die "C compiler test failed."
4670 fi
4671
4672 add_cppflags -D_ISOC99_SOURCE
4673 add_cxxflags -D__STDC_CONSTANT_MACROS
4674 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4675
4676 # some compilers silently accept -std=c11, so we also need to check that the
4677 # version macro is defined properly
4678 if test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L"; then
4679     add_cflags -std=c11
4680 else
4681     check_cflags -std=c99
4682 fi
4683
4684 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4685 #include <stdlib.h>
4686 EOF
4687 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4688 #include <stdlib.h>
4689 EOF
4690
4691 add_host_cppflags -D_ISOC99_SOURCE
4692 check_host_cflags -std=c99
4693 check_host_cflags -Wall
4694 check_host_cflags -O3
4695
4696 check_64bit(){
4697     arch32=$1
4698     arch64=$2
4699     expr=$3
4700     check_code cc "" "int test[2*($expr) - 1]" &&
4701         subarch=$arch64 || subarch=$arch32
4702 }
4703
4704 case "$arch" in
4705     aarch64|alpha|ia64)
4706         spic=$shared
4707     ;;
4708     mips)
4709         check_64bit mips mips64 '_MIPS_SIM > 1'
4710         spic=$shared
4711     ;;
4712     parisc)
4713         check_64bit parisc parisc64 'sizeof(void *) > 4'
4714         spic=$shared
4715     ;;
4716     ppc)
4717         check_64bit ppc ppc64 'sizeof(void *) > 4'
4718         spic=$shared
4719     ;;
4720     s390)
4721         check_64bit s390 s390x 'sizeof(void *) > 4'
4722         spic=$shared
4723     ;;
4724     sparc)
4725         check_64bit sparc sparc64 'sizeof(void *) > 4'
4726         spic=$shared
4727     ;;
4728     x86)
4729         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4730         # Treat x32 as x64 for now. Note it also needs spic=$shared
4731         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4732             subarch=x86_64
4733         if test "$subarch" = "x86_64"; then
4734             spic=$shared
4735         fi
4736     ;;
4737     ppc)
4738         check_cc <<EOF && subarch="ppc64"
4739         int test[(int)sizeof(char*) - 7];
4740 EOF
4741     ;;
4742 esac
4743
4744 enable $subarch
4745 enabled spic && enable_weak pic
4746
4747 # OS specific
4748 case $target_os in
4749     aix)
4750         SHFLAGS=-shared
4751         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4752         enabled shared && add_ldflags -Wl,-brtl
4753         ;;
4754     android)
4755         disable symver
4756         enable section_data_rel_ro
4757         SLIB_INSTALL_NAME='$(SLIBNAME)'
4758         SLIB_INSTALL_LINKS=
4759         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4760         ;;
4761     haiku)
4762         prefix_default="/boot/common"
4763         network_extralibs="-lnetwork"
4764         host_extralibs=
4765         ;;
4766     sunos)
4767         SHFLAGS='-shared -Wl,-h,$$(@F)'
4768         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4769         network_extralibs="-lsocket -lnsl"
4770         add_cppflags -D__EXTENSIONS__
4771         # When using suncc to build, the Solaris linker will mark
4772         # an executable with each instruction set encountered by
4773         # the Solaris assembler.  As our libraries contain their own
4774         # guards for processor-specific code, instead suppress
4775         # generation of the HWCAPS ELF section on Solaris x86 only.
4776         enabled_all suncc x86 &&
4777             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4778             add_ldflags -Wl,-M,mapfile
4779         nm_default='nm -P -g'
4780         version_script='-M'
4781         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
4782         ;;
4783     netbsd)
4784         disable symver
4785         oss_indev_extralibs="-lossaudio"
4786         oss_outdev_extralibs="-lossaudio"
4787         enabled gcc || check_ldflags -Wl,-zmuldefs
4788         ;;
4789     openbsd|bitrig)
4790         disable symver
4791         SHFLAGS='-shared'
4792         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4793         SLIB_INSTALL_LINKS=
4794         oss_indev_extralibs="-lossaudio"
4795         oss_outdev_extralibs="-lossaudio"
4796         ;;
4797     dragonfly)
4798         disable symver
4799         ;;
4800     freebsd)
4801         ;;
4802     bsd/os)
4803         add_extralibs -lpoll -lgnugetopt
4804         strip="strip -d"
4805         ;;
4806     darwin)
4807         enabled ppc && add_asflags -force_cpusubtype_ALL
4808         install_name_dir_default='$(SHLIBDIR)'
4809         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4810         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4811         strip="${strip} -x"
4812         add_ldflags -Wl,-dynamic,-search_paths_first
4813         SLIBSUF=".dylib"
4814         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4815         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4816         objformat="macho"
4817         enabled x86_64 && objformat="macho64"
4818         enabled_any pic shared x86_64 ||
4819             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4820         check_header dispatch/dispatch.h &&
4821             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
4822         version_script='-exported_symbols_list'
4823         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
4824         ;;
4825     msys*)
4826         die "Native MSYS builds are discouraged, please use the MINGW environment."
4827         ;;
4828     mingw32*|mingw64*)
4829         if test $target_os = "mingw32ce"; then
4830             disable network
4831         else
4832             target_os=mingw32
4833         fi
4834         decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
4835         decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
4836         LIBTARGET=i386
4837         if enabled x86_64; then
4838             LIBTARGET="i386:x86-64"
4839         elif enabled arm; then
4840             LIBTARGET=arm-wince
4841         fi
4842         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4843         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4844         shlibdir_default="$bindir_default"
4845         SLIBPREF=""
4846         SLIBSUF=".dll"
4847         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4848         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4849         dlltool="${cross_prefix}dlltool"
4850         if check_cmd lib.exe -list; then
4851             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4852             if enabled x86_64; then
4853                 LIBTARGET=x64
4854             fi
4855         elif check_cmd $dlltool --version; then
4856             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4857         fi
4858         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4859         SLIB_INSTALL_LINKS=
4860         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4861         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4862         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--disable-auto-image-base'
4863         objformat="win32"
4864         ranlib=:
4865         enable dos_paths
4866         check_ldflags -Wl,--nxcompat,--dynamicbase
4867         # Lets work around some stupidity in binutils.
4868         # ld will strip relocations from executables even though we need them
4869         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4870         # however ld then forgets what the entry point should be (oops) so we
4871         # have to manually (re)set it.
4872         if enabled x86_32; then
4873             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
4874         elif enabled x86_64; then
4875             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
4876             check_ldflags -Wl,--high-entropy-va # binutils 2.25
4877             # Set image base >4GB for extra entropy with HEASLR
4878             add_ldexeflags -Wl,--image-base,0x140000000
4879             append SHFLAGS -Wl,--image-base,0x180000000
4880         fi
4881         ;;
4882     win32|win64)
4883         disable symver
4884         if enabled shared; then
4885             # Link to the import library instead of the normal static library
4886             # for shared libs.
4887             LD_LIB='%.lib'
4888             # Cannot build both shared and static libs with MSVC or icl.
4889             disable static
4890         fi
4891         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4892         shlibdir_default="$bindir_default"
4893         SLIBPREF=""
4894         SLIBSUF=".dll"
4895         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4896         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4897         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4898         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4899         SLIB_INSTALL_LINKS=
4900         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4901         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4902         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4903         objformat="win32"
4904         ranlib=:
4905         enable dos_paths
4906         ;;
4907     cygwin*)
4908         target_os=cygwin
4909         shlibdir_default="$bindir_default"
4910         SLIBPREF="cyg"
4911         SLIBSUF=".dll"
4912         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4913         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4914         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4915         SLIB_INSTALL_LINKS=
4916         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4917         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4918         objformat="win32"
4919         enable dos_paths
4920         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4921         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4922         ;;
4923     *-dos|freedos|opendos)
4924         network_extralibs="-lsocket"
4925         objformat="coff"
4926         enable dos_paths
4927         add_cppflags -U__STRICT_ANSI__
4928         ;;
4929     linux)
4930         enable dv1394
4931         enable section_data_rel_ro
4932         ;;
4933     irix*)
4934         target_os=irix
4935         ranlib="echo ignoring ranlib"
4936         ;;
4937     os/2*)
4938         strip="lxlite -CS"
4939         objformat="aout"
4940         add_cppflags -D_GNU_SOURCE
4941         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4942         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4943         LIBSUF="_s.a"
4944         SLIBPREF=""
4945         SLIBSUF=".dll"
4946         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4947         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4948         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
4949             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
4950             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
4951             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
4952             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
4953         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
4954             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
4955         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4956         SLIB_INSTALL_LINKS=
4957         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
4958         enable dos_paths
4959         enable_weak os2threads
4960         ;;
4961     gnu/kfreebsd)
4962         add_cppflags -D_BSD_SOURCE
4963         ;;
4964     gnu)
4965         ;;
4966     qnx)
4967         add_cppflags -D_QNX_SOURCE
4968         network_extralibs="-lsocket"
4969         ;;
4970     symbian)
4971         SLIBSUF=".dll"
4972         enable dos_paths
4973         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4974         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4975         add_ldflags -Wl,--target1-abs,--no-undefined \
4976                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4977                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4978         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4979                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4980                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4981         ;;
4982     osf1)
4983         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4984         ;;
4985     minix)
4986         ;;
4987     none)
4988         ;;
4989     *)
4990         die "Unknown OS '$target_os'."
4991         ;;
4992 esac
4993
4994 # test if creating links works
4995 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
4996 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
4997 mkdir "$link_dest"
4998 $ln_s "$link_dest" "$link_name"
4999 touch "$link_dest/test_file"
5000 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5001     # create link to source path
5002     [ -e src ] && rm src
5003     $ln_s "$source_path" src
5004     source_link=src
5005 else
5006     # creating directory links doesn't work
5007     # fall back to using the full source path
5008     source_link="$source_path"
5009 fi
5010 # cleanup
5011 rm -r "$link_dest"
5012 rm -r "$link_name"
5013
5014 # determine libc flavour
5015
5016 probe_libc(){
5017     pfx=$1
5018     pfx_no_=${pfx%_}
5019     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5020     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5021         eval ${pfx}libc_type=uclibc
5022         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5023     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5024         eval ${pfx}libc_type=glibc
5025         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5026     # MinGW headers can be installed on Cygwin, so check for newlib first.
5027     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5028         eval ${pfx}libc_type=newlib
5029         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5030     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5031     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5032         eval ${pfx}libc_type=mingw64
5033         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5034             add_compat msvcrt/snprintf.o
5035             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5036         fi
5037         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5038         eval test \$${pfx_no_}cc_type = "gcc" &&
5039             add_${pfx}cppflags -D__printf__=__gnu_printf__
5040     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5041          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5042         eval ${pfx}libc_type=mingw32
5043         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5044             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5045             die "ERROR: MinGW32 runtime version must be >= 3.15."
5046         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5047         check_${pfx}cpp_condition _mingw.h "defined(_WIN32_WINNT) && _WIN32_WINNT >= 0x0502" ||
5048             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
5049         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700__" &&
5050             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5051         eval test \$${pfx_no_}cc_type = "gcc" &&
5052             add_${pfx}cppflags -D__printf__=__gnu_printf__
5053     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5054         eval ${pfx}libc_type=msvcrt
5055         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5056             if [ "$pfx" = host_ ]; then
5057                 add_host_cppflags -Dsnprintf=_snprintf
5058             else
5059                 add_compat strtod.o strtod=avpriv_strtod
5060                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5061                                              _snprintf=avpriv_snprintf  \
5062                                              vsnprintf=avpriv_vsnprintf
5063             fi
5064         fi
5065         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5066         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5067         # 0x601 by default unless something else is set by the user.
5068         # This can easily lead to us detecting functions only present
5069         # in such new versions and producing binaries requiring windows 7.0.
5070         # Therefore explicitly set the default to XP unless the user has
5071         # set something else on the command line.
5072         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5073         # family. For these cases, configure is free to use any functions
5074         # found in the SDK headers by default. (Alternatively, we could force
5075         # _WIN32_WINNT to 0x0602 in that case.)
5076         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5077             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
5078 #ifdef WINAPI_FAMILY
5079 #include <winapifamily.h>
5080 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5081 #error not desktop
5082 #endif
5083 #endif
5084 EOF
5085         if [ "$pfx" = "" ]; then
5086             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5087             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5088         fi
5089     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5090         eval ${pfx}libc_type=klibc
5091     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5092         eval ${pfx}libc_type=bionic
5093     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5094         eval ${pfx}libc_type=solaris
5095         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5096     fi
5097     check_${pfx}cc <<EOF
5098 #include <time.h>
5099 void *v = localtime_r;
5100 EOF
5101 test "$?" != 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
5102 #include <time.h>
5103 void *v = localtime_r;
5104 EOF
5105
5106 }
5107
5108 probe_libc
5109 test -n "$libc_type" && enable libc_$libc_type
5110 probe_libc host_
5111 test -n "$host_libc_type" && enable host_libc_$host_libc_type
5112
5113 case $libc_type in
5114     bionic)
5115         add_compat strtod.o strtod=avpriv_strtod
5116         ;;
5117 esac
5118
5119 # hacks for compiler/libc/os combinations
5120
5121 if enabled_all tms470 libc_glibc; then
5122     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
5123     add_cppflags -D__USER_LABEL_PREFIX__=
5124     add_cppflags -D__builtin_memset=memset
5125     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
5126     add_cflags   -pds=48    # incompatible redefinition of macro
5127 fi
5128
5129 if enabled_all ccc libc_glibc; then
5130     add_ldflags -Wl,-z,now  # calls to libots crash without this
5131 fi
5132
5133 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5134     add_cppflags '-I\$(SRC_PATH)/compat/float'
5135
5136 esc(){
5137     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
5138 }
5139
5140 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
5141
5142 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5143
5144 set_default libdir
5145 : ${shlibdir_default:="$libdir"}
5146 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5147
5148 set_default $PATHS_LIST
5149 set_default nm
5150
5151 # we need to build at least one lib type
5152 if ! enabled_any static shared; then
5153     cat <<EOF
5154 At least one library type must be built.
5155 Specify --enable-static to build the static libraries or --enable-shared to
5156 build the shared libraries as well. To only build the shared libraries specify
5157 --disable-static in addition to --enable-shared.
5158 EOF
5159     exit 1
5160 fi
5161
5162 disabled optimizations || check_cflags -fomit-frame-pointer
5163
5164 enable_weak_pic() {
5165     disabled pic && return
5166     enable pic
5167     add_cppflags -DPIC
5168     case "$target_os" in
5169     mingw*|cygwin*)
5170         ;;
5171     *)
5172         add_cflags -fPIC
5173         ;;
5174     esac
5175     add_asflags  -fPIC
5176 }
5177
5178 enabled pic && enable_weak_pic
5179
5180 check_cc <<EOF || die "Symbol mangling check failed."
5181 int ff_extern;
5182 EOF
5183 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5184 extern_prefix=${sym%%ff_extern*}
5185
5186 check_cc <<EOF && enable_weak inline_asm
5187 void foo(void) { __asm__ volatile ("" ::); }
5188 EOF
5189
5190 _restrict=
5191 for restrict_keyword in restrict __restrict__ __restrict; do
5192     check_cc <<EOF && _restrict=$restrict_keyword && break
5193 void foo(char * $restrict_keyword p);
5194 EOF
5195 done
5196
5197 check_cc <<EOF && enable pragma_deprecated
5198 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
5199 EOF
5200
5201 check_cc <<EOF && enable attribute_packed
5202 struct { int x; } __attribute__((packed)) x;
5203 EOF
5204
5205 check_cc <<EOF && enable attribute_may_alias
5206 union { int x; } __attribute__((may_alias)) x;
5207 EOF
5208
5209 check_cc <<EOF || die "endian test failed"
5210 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5211 EOF
5212 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5213
5214 if ! enabled ppc64 || enabled bigendian; then
5215     disable vsx
5216 fi
5217
5218 check_gas() {
5219     log "check_gas using '$as' as AS"
5220     # :vararg is used on aarch64, arm and ppc altivec
5221     check_as <<EOF || return 1
5222 .macro m n, y:vararg=0
5223 \n: .int \y
5224 .endm
5225 m x
5226 EOF
5227     # .altmacro is only used in arm asm
5228     ! enabled arm || check_as <<EOF || return 1
5229 .altmacro
5230 EOF
5231     enable gnu_as
5232     return 0
5233 }
5234
5235 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5236     nogas=:
5237     enabled_any arm aarch64 && nogas=die
5238     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5239     as_noop=-v
5240
5241     case $as_type in
5242         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5243         gcc)  gaspp_as_type=gas ;;
5244         *)    gaspp_as_type=$as_type ;;
5245     esac
5246
5247     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5248
5249     test "${as#*gas-preprocessor.pl}" != "$as" ||
5250     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5251         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5252
5253     if ! check_gas ; then
5254         as=${gas:=$as}
5255         check_gas || \
5256             $nogas "GNU assembler not found, install/update gas-preprocessor"
5257     fi
5258
5259     check_as <<EOF && enable as_func
5260 .func test
5261 .endfunc
5262 EOF
5263 fi
5264
5265 check_inline_asm inline_asm_labels '"1:\n"'
5266
5267 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5268
5269 if enabled aarch64; then
5270     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5271     # internal assembler in clang 3.3 does not support this instruction
5272     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5273     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5274
5275     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5276
5277 elif enabled alpha; then
5278
5279     check_cflags -mieee
5280
5281 elif enabled arm; then
5282
5283     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
5284
5285     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
5286 float func(float a, float b){ return a+b; }
5287 EOF
5288
5289     enabled thumb && check_cflags -mthumb || check_cflags -marm
5290
5291     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
5292         enable vfp_args
5293     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5294         enable vfp_args
5295     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5296         case "${cross_prefix:-$cc}" in
5297             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
5298             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
5299 __asm__ (".eabi_attribute 28, 1");
5300 int main(void) { return 0; }
5301 EOF
5302         esac
5303         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5304     fi
5305
5306     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5307     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5308     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5309     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5310     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5311     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5312     enabled setend  && check_insn setend  'setend be'
5313
5314     [ $target_os = linux ] || [ $target_os = android ] ||
5315         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5316             $ARCH_EXT_LIST_ARM
5317
5318     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5319
5320     check_as <<EOF && enable as_dn_directive
5321 ra .dn d0.i16
5322 .unreq ra
5323 EOF
5324     check_as <<EOF && enable as_fpu_directive
5325 .fpu neon
5326 EOF
5327
5328     # llvm's integrated assembler supports .object_arch from llvm 3.5
5329     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
5330 .object_arch armv4
5331 EOF
5332
5333     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5334
5335 elif enabled mips; then
5336
5337     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5338     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5339     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5340
5341     # Enable minimum ISA based on selected options
5342     if enabled mips64; then
5343         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5344         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5345         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5346     else
5347         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5348         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5349         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5350         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5351     fi
5352
5353     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5354     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5355     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
5356     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5357     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5358
5359 elif enabled parisc; then
5360
5361     if enabled gcc; then
5362         case $($cc -dumpversion) in
5363             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5364         esac
5365     fi
5366
5367 elif enabled ppc; then
5368
5369     enable local_aligned_8 local_aligned_16 local_aligned_32
5370
5371     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5372     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5373     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5374     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5375
5376     # AltiVec flags: The FSF version of GCC differs from the Apple version
5377     if enabled altivec; then
5378         check_cflags -maltivec -mabi=altivec &&
5379         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
5380         check_cflags -faltivec
5381
5382         # check if our compiler supports Motorola AltiVec C API
5383         check_cc <<EOF || disable altivec
5384 $inc_altivec_h
5385 int main(void) {
5386     vector signed int v1 = (vector signed int) { 0 };
5387     vector signed int v2 = (vector signed int) { 1 };
5388     v1 = vec_add(v1, v2);
5389     return 0;
5390 }
5391 EOF
5392
5393         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5394     fi
5395
5396     if enabled vsx; then
5397         check_cflags -mvsx &&
5398         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
5399     fi
5400
5401     if enabled power8; then
5402         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
5403     fi
5404
5405 elif enabled x86; then
5406
5407     check_builtin rdtsc    intrin.h   "__rdtsc()"
5408     check_builtin mm_empty mmintrin.h "_mm_empty()"
5409
5410     enable local_aligned_8 local_aligned_16 local_aligned_32
5411
5412     # check whether EBP is available on x86
5413     # As 'i' is stored on the stack, this program will crash
5414     # if the base pointer is used to access it because the
5415     # base pointer is cleared in the inline assembly code.
5416     check_exec_crash <<EOF && enable ebp_available
5417 volatile int i=0;
5418 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5419 return i;
5420 EOF
5421
5422     # check whether EBX is available on x86
5423     check_inline_asm ebx_available '""::"b"(0)' &&
5424         check_inline_asm ebx_available '"":::"%ebx"'
5425
5426     # check whether xmm clobbers are supported
5427     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5428
5429     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5430         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5431
5432     # check whether binutils is new enough to compile SSSE3/MMXEXT
5433     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5434     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5435
5436     if ! disabled_any asm mmx yasm; then
5437         if check_cmd $yasmexe --version; then
5438             enabled x86_64 && yasm_extra="-m amd64"
5439             yasm_debug="-g dwarf2"
5440         elif check_cmd nasm -v; then
5441             yasmexe=nasm
5442             yasm_debug="-g -F dwarf"
5443             if enabled x86_64; then
5444                 case "$objformat" in
5445                     elf)   objformat=elf64 ;;
5446                     win32) objformat=win64 ;;
5447                 esac
5448             fi
5449         fi
5450
5451         YASMFLAGS="-f $objformat $yasm_extra"
5452         enabled pic               && append YASMFLAGS "-DPIC"
5453         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
5454         case "$objformat" in
5455             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
5456         esac
5457
5458         check_yasm "movbe ecx, [5]" && enable yasm ||
5459             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
5460         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
5461         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
5462         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
5463         check_yasm "CPU amdnop" || disable cpunop
5464     fi
5465
5466     case "$cpu" in
5467         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5468             disable fast_clz
5469         ;;
5470     esac
5471
5472 fi
5473
5474 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
5475
5476 check_ldflags -Wl,--as-needed
5477 check_ldflags -Wl,-z,noexecstack
5478
5479 if check_func dlopen && check_func dlsym; then
5480     ldl=
5481 elif check_func dlopen -ldl && check_func dlsym -ldl; then
5482     ldl=-ldl
5483 fi
5484
5485 avisynth_demuxer_extralibs='$ldl'
5486 cuda_extralibs='$ldl'
5487 decklink_outdev_extralibs="$decklink_outdev_extralibs $ldl"
5488 decklink_indev_extralibs="$decklink_indev_extralibs $ldl"
5489 frei0r_filter_extralibs='$ldl'
5490 frei0r_src_filter_extralibs='$ldl'
5491 ladspa_filter_extralibs='$ldl'
5492 nvenc_extralibs='$ldl'
5493 coreimage_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5494 coreimagesrc_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5495
5496 if ! disabled network; then
5497     check_func getaddrinfo $network_extralibs
5498     check_func inet_aton $network_extralibs
5499
5500     check_type netdb.h "struct addrinfo"
5501     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5502     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5503     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5504     check_type poll.h "struct pollfd"
5505     check_type netinet/sctp.h "struct sctp_event_subscribe"
5506     check_struct "sys/socket.h" "struct msghdr" msg_flags
5507     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5508     check_type netinet/in.h "struct sockaddr_in6"
5509     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5510     check_type "sys/types.h sys/socket.h" socklen_t
5511
5512     # Prefer arpa/inet.h over winsock2
5513     if check_header arpa/inet.h ; then
5514         check_func closesocket
5515     elif check_header winsock2.h ; then
5516         check_func_headers winsock2.h closesocket -lws2 &&
5517             network_extralibs="-lws2" ||
5518         { check_func_headers winsock2.h closesocket -lws2_32 &&
5519             network_extralibs="-lws2_32"; } || disable winsock2_h network
5520         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5521
5522         check_type ws2tcpip.h socklen_t
5523         check_type ws2tcpip.h "struct addrinfo"
5524         check_type ws2tcpip.h "struct group_source_req"
5525         check_type ws2tcpip.h "struct ip_mreq_source"
5526         check_type ws2tcpip.h "struct ipv6_mreq"
5527         check_type winsock2.h "struct pollfd"
5528         check_struct winsock2.h "struct sockaddr" sa_len
5529         check_type ws2tcpip.h "struct sockaddr_in6"
5530         check_type ws2tcpip.h "struct sockaddr_storage"
5531     else
5532         disable network
5533     fi
5534 fi
5535
5536 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5537 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5538 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5539 check_builtin sarestart signal.h "SA_RESTART"
5540 check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" -lpthread
5541 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5542 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5543 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5544 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5545
5546 case "$custom_allocator" in
5547     jemalloc)
5548         # jemalloc by default does not use a prefix
5549         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5550     ;;
5551     tcmalloc)
5552         require_pkg_config libtcmalloc gperftools/tcmalloc.h tc_malloc
5553         malloc_prefix=tc_
5554     ;;
5555 esac
5556
5557 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5558 check_func  ${malloc_prefix}memalign            && enable memalign
5559 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5560
5561 check_func  access
5562 check_func_headers stdlib.h arc4random
5563 check_func_headers time.h clock_gettime ||
5564     { check_lib time.h clock_gettime -lrt && LIBRT="-lrt"; }
5565 check_func  fcntl
5566 check_func  fork
5567 check_func  gethrtime
5568 check_func  getopt
5569 check_func  getrusage
5570 check_func  gettimeofday
5571 check_func  isatty
5572 check_func  mach_absolute_time
5573 check_func  mkstemp
5574 check_func  mmap
5575 check_func  mprotect
5576 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5577 check_func_headers time.h nanosleep ||
5578     { check_lib time.h nanosleep -lrt && LIBRT="-lrt"; }
5579 check_func  sched_getaffinity
5580 check_func  setrlimit
5581 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5582 check_func  strerror_r
5583 check_func  sysconf
5584 check_func  sysctl
5585 check_func  usleep
5586
5587 check_func_headers conio.h kbhit
5588 check_func_headers io.h setmode
5589 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5590 check_func_headers stdlib.h getenv
5591 check_func_headers sys/stat.h lstat
5592
5593 check_func_headers windows.h GetProcessAffinityMask
5594 check_func_headers windows.h GetProcessTimes
5595 check_func_headers windows.h GetSystemTimeAsFileTime
5596 check_func_headers windows.h LoadLibrary
5597 check_func_headers windows.h MapViewOfFile
5598 check_func_headers windows.h PeekNamedPipe
5599 check_func_headers windows.h SetConsoleTextAttribute
5600 check_func_headers windows.h SetConsoleCtrlHandler
5601 check_func_headers windows.h Sleep
5602 check_func_headers windows.h VirtualAlloc
5603 check_struct windows.h "CONDITION_VARIABLE" Ptr
5604 check_func_headers glob.h glob
5605 enabled xlib &&
5606     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5607
5608 check_header AudioToolbox/AudioToolbox.h
5609 check_header direct.h
5610 check_header dirent.h
5611 check_header dlfcn.h
5612 check_header d3d11.h
5613 check_header dxva.h
5614 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5615 check_header io.h
5616 check_header libcrystalhd/libcrystalhd_if.h
5617 check_header mach/mach_time.h
5618 check_header malloc.h
5619 check_header net/udplite.h
5620 check_header poll.h
5621 check_header sys/mman.h
5622 check_header sys/param.h
5623 check_header sys/resource.h
5624 check_header sys/select.h
5625 check_header sys/time.h
5626 check_header sys/un.h
5627 check_header termios.h
5628 check_header unistd.h
5629 check_header valgrind/valgrind.h
5630 check_header VideoDecodeAcceleration/VDADecoder.h
5631 check_header VideoToolbox/VideoToolbox.h
5632 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5633 enabled videotoolbox && check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferColorPrimaries_ITU_R_2020 -framework CoreVideo
5634 check_header windows.h
5635 check_header X11/extensions/XvMClib.h
5636 check_header asm/types.h
5637
5638 # it seems there are versions of clang in some distros that try to use the
5639 # gcc headers, which explodes for stdatomic
5640 # so we also check that atomics actually work here
5641 check_builtin stdatomic_h stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0)"
5642
5643 check_lib "windows.h shellapi.h" CommandLineToArgvW   -lshell32
5644 check_lib "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
5645 check_lib "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
5646
5647 check_lib "CoreServices/CoreServices.h" UTGetOSTypeFromString "-framework CoreServices"
5648
5649 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5650
5651 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5652 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5653 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5654 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5655 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5656
5657 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
5658 check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
5659 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
5660 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
5661 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5662 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5663 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
5664 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
5665
5666 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5667
5668 check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt
5669
5670 if ! disabled w32threads && ! enabled pthreads; then
5671     check_func_headers "windows.h process.h" _beginthreadex &&
5672         enable w32threads || disable w32threads
5673     if ! enabled w32threads && enabled winrt; then
5674         check_func_headers "windows.h" CreateThread &&
5675             enable w32threads || disable w32threads
5676     fi
5677 fi
5678
5679 # check for some common methods of building with pthread support
5680 # do this before the optional library checks as some of them require pthreads
5681 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5682     enable pthreads
5683     if check_func pthread_join -pthread && check_func pthread_create -pthread; then
5684         add_cflags -pthread
5685         add_extralibs -pthread
5686     elif check_func pthread_join -pthreads && check_func pthread_create -pthreads; then
5687         add_cflags -pthreads
5688         add_extralibs -pthreads
5689     elif check_func pthread_join -ldl -pthread && check_func pthread_create -ldl -pthread; then
5690         add_cflags -ldl -pthread
5691         add_extralibs -ldl -pthread
5692     elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
5693         add_extralibs -lpthreadGC2
5694     elif check_lib pthread.h pthread_join -lpthread && check_lib pthread.h pthread_create -lpthread; then
5695         :
5696     elif ! check_func pthread_join && ! check_func pthread_create; then
5697         disable pthreads
5698     fi
5699     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5700 fi
5701
5702
5703 if enabled pthreads; then
5704   check_func pthread_cancel
5705 fi
5706
5707 enabled pthreads &&
5708     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)"
5709
5710 disabled  zlib || check_lib  zlib.h      zlibVersion    -lz    || disable  zlib
5711 disabled bzlib || check_lib bzlib.h BZ2_bzlibVersion    -lbz2  || disable bzlib
5712 disabled  lzma || check_lib  lzma.h lzma_version_number -llzma || disable lzma
5713
5714 check_lib math.h sin -lm && LIBM="-lm"
5715 disabled crystalhd || check_lib "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd || disable crystalhd
5716
5717 atan2f_args=2
5718 copysign_args=2
5719 hypot_args=2
5720 ldexpf_args=2
5721 powf_args=2
5722
5723 for func in $MATH_FUNCS; do
5724     eval check_mathfunc $func \${${func}_args:-1} $LIBM
5725 done
5726
5727 for func in $COMPLEX_FUNCS; do
5728     eval check_complexfunc $func \${${func}_args:-1}
5729 done
5730
5731 # these are off by default, so fail if requested and not available
5732 enabled avfoundation_indev && { check_header_objcc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
5733 enabled avfoundation_indev && { check_lib CoreGraphics/CoreGraphics.h CGGetActiveDisplayList -framework CoreGraphics ||
5734                                 check_lib ApplicationServices/ApplicationServices.h CGGetActiveDisplayList -framework ApplicationServices; }
5735 enabled cuda              && check_header cuda.h # this is not a dependency
5736 enabled cuvid             && { enabled cuda ||
5737                                die "ERROR: CUVID requires CUDA"; }
5738 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5739 enabled coreimage_filter  && { check_header_objcc QuartzCore/CoreImage.h || disable coreimage_filter; }
5740 enabled coreimagesrc_filter && { check_header_objcc QuartzCore/CoreImage.h || disable coreimagesrc_filter; }
5741 enabled decklink          && { { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; } &&
5742                                { check_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a060100" || die "ERROR: Decklink API version must be >= 10.6.1."; } }
5743 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
5744 enabled gmp               && require gmp gmp.h mpz_export -lgmp
5745 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
5746 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads &&
5747                                check_lib "dlfcn.h" dlopen -ldl || die "ERROR: jni not found"; }
5748 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
5749 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5750 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
5751 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
5752 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
5753 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5754                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
5755                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5756 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
5757 enabled libdc1394         && require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new
5758 enabled libfdk_aac        && { use_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5759                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5760                                  warn "using libfdk without pkg-config"; } }
5761 flite_extralibs="-lflite_cmu_time_awb -lflite_cmu_us_awb -lflite_cmu_us_kal -lflite_cmu_us_kal16 -lflite_cmu_us_rms -lflite_cmu_us_slt -lflite_usenglish -lflite_cmulex -lflite"
5762 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
5763 enabled fontconfig        && enable libfontconfig
5764 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
5765 enabled libfreetype       && require_pkg_config freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
5766 enabled libfribidi        && require_pkg_config fribidi fribidi.h fribidi_version_info
5767 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
5768 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5769                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
5770                                done || die "ERROR: libgsm not found"; }
5771 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
5772 enabled libkvazaar        && require_pkg_config "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
5773 enabled libmfx            && require_pkg_config libmfx "mfx/mfxvideo.h" MFXInit
5774 enabled libmodplug        && require_pkg_config libmodplug libmodplug/modplug.h ModPlug_Load
5775 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5776 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
5777 enabled libnpp            && require libnpp npp.h nppGetLibVersion -lnppi -lnppc
5778 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5779 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5780 enabled libopencv         && { check_header opencv2/core/core_c.h &&
5781                                { use_pkg_config opencv opencv2/core/core_c.h cvCreateImageHeader ||
5782                                  require opencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
5783                                require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader; }
5784 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
5785 enabled libopenjpeg       && { { check_lib openjpeg-2.1/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5786                                check_lib openjpeg-2.1/openjpeg.h opj_version -lopenjp2 ||
5787                                { check_lib openjpeg-2.0/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5788                                { check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5789                                { check_lib openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5790                                die "ERROR: libopenjpeg not found"; }
5791 enabled libopenmpt        && require_pkg_config "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create
5792 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
5793 enabled libpulse          && require_pkg_config libpulse pulse/pulseaudio.h pa_context_new
5794 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
5795 enabled librubberband     && require_pkg_config "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new
5796 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
5797 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
5798 enabled libsmbclient      && { use_pkg_config smbclient libsmbclient.h smbc_init ||
5799                                require smbclient libsmbclient.h smbc_init -lsmbclient; }
5800 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy
5801 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr && LIBSOXR="-lsoxr"
5802 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
5803 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
5804 enabled libtesseract      && require_pkg_config tesseract tesseract/capi.h TessBaseAPICreate
5805 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
5806 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
5807                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
5808                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
5809 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
5810 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
5811 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
5812 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
5813
5814 enabled libvpx            && {
5815     enabled libvpx_vp8_decoder && {
5816         use_pkg_config "vpx >= 0.9.1" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
5817             check_lib "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
5818                 die "ERROR: libvpx decoder version must be >=0.9.1";
5819     }
5820     enabled libvpx_vp8_encoder && {
5821         use_pkg_config "vpx >= 0.9.7" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
5822             check_lib "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
5823                 die "ERROR: libvpx encoder version must be >=0.9.7";
5824     }
5825     enabled libvpx_vp9_decoder && {
5826         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
5827             check_lib "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx ||
5828                 disable libvpx_vp9_decoder;
5829     }
5830     enabled libvpx_vp9_encoder && {
5831         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
5832             check_lib "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx ||
5833                 disable libvpx_vp9_encoder;
5834     }
5835     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
5836         die "libvpx enabled but no supported decoders found"
5837     fi
5838 }
5839
5840 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
5841 enabled libwebp           && {
5842     enabled libwebp_encoder      && require_pkg_config "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
5843     enabled libwebp_anim_encoder && { use_pkg_config "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit || disable libwebp_anim_encoder; } }
5844 enabled libx264           && { use_pkg_config x264 "stdint.h x264.h" x264_encoder_encode ||
5845                                { require libx264 "stdint.h x264.h" x264_encoder_encode -lx264 &&
5846                                  warn "using libx264 without pkg-config"; } } &&
5847                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
5848                                die "ERROR: libx264 must be installed and version must be >= 0.118."; } &&
5849                              { check_cpp_condition x264.h "X264_MPEG2" &&
5850                                enable libx262; }
5851 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
5852                              { check_cpp_condition x265.h "X265_BUILD >= 68" ||
5853                                die "ERROR: libx265 version must be >= 68."; }
5854 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode -lxavs
5855 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
5856 enabled libzimg           && require_pkg_config "zimg >= 2.3.0" zimg.h zimg_get_api_version
5857 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
5858 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi &&
5859                              { check_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
5860                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
5861 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
5862 enabled mmal              && { check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
5863                                { ! enabled cross_compile &&
5864                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
5865                                  add_ldflags -L/opt/vc/lib/ &&
5866                                  check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
5867                                die "ERROR: mmal not found" &&
5868                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
5869 enabled netcdf            && require_pkg_config netcdf netcdf.h nc_inq_libvers
5870 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
5871                                check_lib 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
5872                                die "ERROR: openal not found"; } &&
5873                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
5874                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
5875 enabled opencl            && { check_lib OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
5876                                check_lib CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
5877                                die "ERROR: opencl not found"; } &&
5878                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
5879                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
5880                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
5881 enabled opengl            && { check_lib GL/glx.h glXGetProcAddress "-lGL" ||
5882                                check_lib windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
5883                                check_lib OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
5884                                check_lib ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
5885                                die "ERROR: opengl not found."
5886                              }
5887 enabled omx_rpi           && { check_header OMX_Core.h ||
5888                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_header OMX_Core.h ; } ||
5889                                die "ERROR: OpenMAX IL headers not found"; }
5890 enabled omx               && { check_header OMX_Core.h || die "ERROR: OpenMAX IL headers not found"; }
5891 enabled openssl           && { use_pkg_config openssl openssl/ssl.h OPENSSL_init_ssl ||
5892                                use_pkg_config openssl openssl/ssl.h SSL_library_init ||
5893                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
5894                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
5895                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
5896                                die "ERROR: openssl not found"; }
5897 enabled qtkit_indev      && { check_header_objcc QTKit/QTKit.h || disable qtkit_indev; }
5898
5899 if enabled gcrypt; then
5900     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
5901     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
5902         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
5903         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
5904         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
5905             die "ERROR: gcrypt not found"
5906         add_cflags $gcrypt_cflags && add_extralibs $gcrypt_extralibs
5907     else
5908         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
5909     fi
5910 fi
5911
5912 disabled sdl && disable sdl2
5913 if ! disabled sdl2; then
5914     SDL2_CONFIG="${cross_prefix}sdl2-config"
5915     if check_pkg_config sdl2 SDL_events.h SDL_PollEvent; then
5916         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
5917         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
5918         check_func SDL_Init $sdl2_extralibs $sdl2_cflags && enable sdl2
5919     else
5920       if "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
5921         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
5922         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
5923         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
5924         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
5925         check_func SDL_Init $sdl2_extralibs $sdl2_cflags && enable sdl2
5926       fi
5927     fi
5928     if test $target_os = "mingw32"; then
5929         sdl2_extralibs="$sdl2_extralibs -mconsole"
5930     fi
5931 fi
5932 enabled sdl2 && enable sdl && add_cflags $sdl2_cflags && add_extralibs $sdl2_extralibs
5933
5934 disabled securetransport || { check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5935     check_lib "Security/SecureTransport.h Security/Security.h" "SSLCreateContext SecItemImport" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5936     enable securetransport; }
5937
5938 disabled schannel || { check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
5939                        check_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" && enable schannel && add_extralibs -lsecur32; }
5940
5941 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
5942 enabled makeinfo \
5943     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
5944     && enable makeinfo_html || disable makeinfo_html
5945 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
5946 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
5947 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
5948 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
5949
5950 check_header linux/fb.h
5951 check_header linux/videodev.h
5952 check_header linux/videodev2.h
5953 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5954
5955 check_header sys/videoio.h
5956 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5957
5958 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
5959 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
5960 # w32api 3.12 had it defined wrong
5961 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
5962
5963 check_type "dshow.h" IBaseFilter
5964
5965 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
5966 { check_header dev/bktr/ioctl_meteor.h &&
5967   check_header dev/bktr/ioctl_bt848.h; } ||
5968 { check_header machine/ioctl_meteor.h &&
5969   check_header machine/ioctl_bt848.h; } ||
5970 { check_header dev/video/meteor/ioctl_meteor.h &&
5971   check_header dev/video/bktr/ioctl_bt848.h; } ||
5972 check_header dev/ic/bt8xx.h
5973
5974 if check_struct sys/soundcard.h audio_buf_info bytes; then
5975     enable_safe sys/soundcard.h
5976 else
5977     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
5978     #include <sys/soundcard.h>
5979     audio_buf_info abc;
5980 EOF
5981 fi
5982 check_header soundcard.h
5983
5984 enabled_any alsa_indev alsa_outdev &&
5985     check_lib alsa/asoundlib.h snd_pcm_htimestamp -lasound && enable alsa
5986
5987 enabled jack_indev && check_lib jack/jack.h jack_client_open -ljack && enable jack &&
5988     check_func jack_port_get_latency_range -ljack
5989
5990 enabled_any sndio_indev sndio_outdev && check_lib sndio.h sio_open -lsndio && enable sndio
5991
5992 if enabled libcdio; then
5993     check_lib "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
5994     check_lib "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
5995     die "ERROR: No usable libcdio/cdparanoia found"
5996 fi
5997
5998 if ! disabled libxcb; then
5999     check_pkg_config "xcb >= 1.4" xcb/xcb.h xcb_connect || {
6000         enabled libxcb && die "ERROR: libxcb >= 1.4 not found";
6001     } && enable libxcb
6002
6003 if enabled libxcb; then
6004     disabled libxcb_shm || {
6005         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
6006             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
6007         } && check_header sys/shm.h && enable libxcb_shm; }
6008
6009     disabled libxcb_xfixes || {
6010         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
6011             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
6012         } && enable libxcb_xfixes; }
6013
6014     disabled libxcb_shape || {
6015         check_pkg_config xcb-shape xcb/shape.h xcb_shape_get_rectangles || {
6016             enabled libxcb_shape && die "ERROR: libxcb_shape not found";
6017         } && enable libxcb_shape; }
6018
6019     add_cflags $xcb_cflags $xcb_shm_cflags $xcb_xfixes_cflags $xcb_shape_cflags
6020     add_extralibs $xcb_extralibs $xcb_shm_extralibs $xcb_xfixes_extralibs $xcb_shape_extralibs
6021 fi
6022 fi
6023
6024 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6025
6026 enabled dxva2api_h &&
6027     check_cc <<EOF && enable dxva2api_cobj
6028 #define _WIN32_WINNT 0x0600
6029 #define COBJMACROS
6030 #include <windows.h>
6031 #include <d3d9.h>
6032 #include <dxva2api.h>
6033 int main(void) { IDirectXVideoDecoder *o = NULL; IDirectXVideoDecoder_Release(o); return 0; }
6034 EOF
6035
6036 enabled dxva2 &&
6037     check_lib windows.h CoTaskMemFree -lole32 &&
6038     enable dxva2_lib
6039
6040 enabled vaapi &&
6041     check_lib va/va.h vaInitialize -lva ||
6042     disable vaapi
6043
6044 enabled vaapi &&
6045     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
6046     disable vaapi
6047
6048 enabled vaapi &&
6049     check_lib "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm &&
6050     enable vaapi_drm
6051
6052 enabled vaapi &&
6053     check_lib "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 -lX11 &&
6054     enable vaapi_x11
6055
6056 enabled vdpau &&
6057     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
6058     disable vdpau
6059
6060 enabled vdpau &&
6061     check_lib "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11 &&
6062     enable vdpau_x11
6063
6064 if enabled x86; then
6065     case $target_os in
6066         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6067             ;;
6068         *)
6069             disable cuda cuvid nvenc
6070             ;;
6071     esac
6072 else
6073     disable cuda cuvid nvenc
6074 fi
6075
6076 enabled nvenc &&
6077     check_cc -I$source_path <<EOF || disable nvenc
6078 #include "compat/nvenc/nvEncodeAPI.h"
6079 NV_ENCODE_API_FUNCTION_LIST flist;
6080 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6081 int main(void) { return 0; }
6082 EOF
6083
6084 # Funny iconv installations are not unusual, so check it after all flags have been set
6085 disabled iconv || check_func_headers iconv.h iconv || check_lib iconv.h iconv -liconv || disable iconv
6086
6087 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6088
6089 # add some useful compiler flags if supported
6090 check_cflags -Wdeclaration-after-statement
6091 check_cflags -Wall
6092 check_cflags -Wdisabled-optimization
6093 check_cflags -Wpointer-arith
6094 check_cflags -Wredundant-decls
6095 check_cflags -Wwrite-strings
6096 check_cflags -Wtype-limits
6097 check_cflags -Wundef
6098 check_cflags -Wmissing-prototypes
6099 check_cflags -Wno-pointer-to-int-cast
6100 check_cflags -Wstrict-prototypes
6101 check_cflags -Wempty-body
6102
6103 if enabled extra_warnings; then
6104     check_cflags -Wcast-qual
6105     check_cflags -Wextra
6106     check_cflags -Wpedantic
6107 fi
6108
6109 check_disable_warning(){
6110     warning_flag=-W${1#-Wno-}
6111     test_cflags $warning_flag && add_cflags $1
6112 }
6113
6114 check_disable_warning -Wno-parentheses
6115 check_disable_warning -Wno-switch
6116 check_disable_warning -Wno-format-zero-length
6117 check_disable_warning -Wno-pointer-sign
6118 check_disable_warning -Wno-unused-const-variable
6119
6120 check_disable_warning_headers(){
6121     warning_flag=-W${1#-Wno-}
6122     test_cflags $warning_flag && add_cflags_headers $1
6123 }
6124
6125 check_disable_warning_headers -Wno-deprecated-declarations
6126 check_disable_warning_headers -Wno-unused-variable
6127
6128 # add some linker flags
6129 check_ldflags -Wl,--warn-common
6130 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6131 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
6132 enabled rpath && add_ldlibflags -Wl,-rpath,$libdir
6133 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6134
6135 # add some strip flags
6136 # -wN '..@*' is more selective than -x, but not available everywhere.
6137 check_stripflags -wN \'..@*\' || check_stripflags -x
6138
6139 enabled neon_clobber_test &&
6140     check_ldflags -Wl,--wrap,avcodec_open2              \
6141                   -Wl,--wrap,avcodec_decode_audio4      \
6142                   -Wl,--wrap,avcodec_decode_video2      \
6143                   -Wl,--wrap,avcodec_decode_subtitle2   \
6144                   -Wl,--wrap,avcodec_encode_audio2      \
6145                   -Wl,--wrap,avcodec_encode_video2      \
6146                   -Wl,--wrap,avcodec_encode_subtitle    \
6147                   -Wl,--wrap,avcodec_send_packet        \
6148                   -Wl,--wrap,avcodec_receive_packet     \
6149                   -Wl,--wrap,avcodec_send_frame         \
6150                   -Wl,--wrap,avcodec_receive_frame      \
6151                   -Wl,--wrap,swr_convert                \
6152                   -Wl,--wrap,avresample_convert ||
6153     disable neon_clobber_test
6154
6155 enabled xmm_clobber_test &&
6156     check_ldflags -Wl,--wrap,avcodec_open2              \
6157                   -Wl,--wrap,avcodec_decode_audio4      \
6158                   -Wl,--wrap,avcodec_decode_video2      \
6159                   -Wl,--wrap,avcodec_decode_subtitle2   \
6160                   -Wl,--wrap,avcodec_encode_audio2      \
6161                   -Wl,--wrap,avcodec_encode_video2      \
6162                   -Wl,--wrap,avcodec_encode_subtitle    \
6163                   -Wl,--wrap,avcodec_send_packet        \
6164                   -Wl,--wrap,avcodec_receive_packet     \
6165                   -Wl,--wrap,avcodec_send_frame         \
6166                   -Wl,--wrap,avcodec_receive_frame      \
6167                   -Wl,--wrap,swr_convert                \
6168                   -Wl,--wrap,avresample_convert         \
6169                   -Wl,--wrap,sws_scale ||
6170     disable xmm_clobber_test
6171
6172 check_ld "cc" <<EOF && enable proper_dce
6173 extern const int array[512];
6174 static inline int func(void) { return array[0]; }
6175 int main(void) { return 0; }
6176 EOF
6177
6178 if enabled proper_dce; then
6179     echo "X { local: *; };" > $TMPV
6180     if test_ldflags -Wl,${version_script},$TMPV; then
6181         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6182         check_cc <<EOF && enable symver_asm_label
6183 void ff_foo(void) __asm__ ("av_foo@VERSION");
6184 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6185 EOF
6186         check_cc <<EOF && enable symver_gnu_asm
6187 __asm__(".symver ff_foo,av_foo@VERSION");
6188 void ff_foo(void) {}
6189 EOF
6190     fi
6191 fi
6192
6193 if [ -z "$optflags" ]; then
6194     if enabled small; then
6195         optflags=$cflags_size
6196     elif enabled optimizations; then
6197         optflags=$cflags_speed
6198     else
6199         optflags=$cflags_noopt
6200     fi
6201 fi
6202
6203 check_optflags(){
6204     check_cflags "$@"
6205     enabled lto && check_ldflags "$@"
6206 }
6207
6208
6209 if enabled lto; then
6210     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6211     check_cflags  -flto
6212     check_ldflags -flto $cpuflags
6213     disable inline_asm_direct_symbol_refs
6214 fi
6215
6216 check_optflags $optflags
6217 check_optflags -fno-math-errno
6218 check_optflags -fno-signed-zeros
6219
6220 enabled ftrapv && check_cflags -ftrapv
6221
6222 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6223 int x;
6224 EOF
6225
6226
6227 if enabled icc; then
6228     # Just warnings, no remarks
6229     check_cflags -w1
6230     # -wd: Disable following warnings
6231     # 144, 167, 556: -Wno-pointer-sign
6232     # 188: enumerated type mixed with another type
6233     # 1292: attribute "foo" ignored
6234     # 1419: external declaration in primary source file
6235     # 10006: ignoring unknown option -fno-signed-zeros
6236     # 10148: ignoring unknown option -Wno-parentheses
6237     # 10156: ignoring option '-W'; no argument required
6238     # 13200: No EMMS instruction before call to function
6239     # 13203: No EMMS instruction before return from function
6240     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6241     # 11030: Warning unknown option --as-needed
6242     # 10156: ignoring option '-export'; no argument required
6243     check_ldflags -wd10156,11030
6244     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6245     enable ebp_available
6246     # The test above does not test linking
6247     enabled lto && disable symver_asm_label
6248     if enabled x86_32; then
6249         icc_version=$($cc -dumpversion)
6250         test ${icc_version%%.*} -ge 11 &&
6251             check_cflags -falign-stack=maintain-16-byte ||
6252             disable aligned_stack
6253     fi
6254 elif enabled ccc; then
6255     # disable some annoying warnings
6256     add_cflags -msg_disable bitnotint
6257     add_cflags -msg_disable mixfuncvoid
6258     add_cflags -msg_disable nonstandcast
6259     add_cflags -msg_disable unsupieee
6260 elif enabled gcc; then
6261     check_optflags -fno-tree-vectorize
6262     check_cflags -Werror=format-security
6263     check_cflags -Werror=implicit-function-declaration
6264     check_cflags -Werror=missing-prototypes
6265     check_cflags -Werror=return-type
6266     check_cflags -Werror=vla
6267     check_cflags -Wformat
6268     check_cflags -fdiagnostics-color=auto
6269     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6270 elif enabled llvm_gcc; then
6271     check_cflags -mllvm -stack-alignment=16
6272 elif enabled clang; then
6273     check_cflags -mllvm -stack-alignment=16
6274     check_cflags -mstack-alignment=16
6275     check_cflags -Qunused-arguments
6276     check_cflags -Werror=implicit-function-declaration
6277     check_cflags -Werror=missing-prototypes
6278     check_cflags -Werror=return-type
6279 elif enabled cparser; then
6280     add_cflags -Wno-missing-variable-declarations
6281     add_cflags -Wno-empty-statement
6282 elif enabled armcc; then
6283     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6284     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6285     # 2523: use of inline assembly is deprecated
6286     add_cflags -W${armcc_opt},--diag_suppress=2523
6287     add_cflags -W${armcc_opt},--diag_suppress=1207
6288     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6289     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6290     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6291     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6292 elif enabled tms470; then
6293     add_cflags -pds=824 -pds=837
6294     disable inline_asm
6295 elif enabled pathscale; then
6296     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6297 elif enabled_any msvc icl; then
6298     enabled x86_32 && disable aligned_stack
6299     enabled_all x86_32 debug && add_cflags -Oy-
6300     enabled debug && add_ldflags -debug
6301     enable pragma_deprecated
6302     if enabled icl; then
6303         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6304         # (correctly) on icl 13.x.
6305         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6306             add_cflags -Qansi-alias
6307         # Some inline asm is not compilable in debug
6308         if enabled debug; then
6309             disable ebp_available
6310             disable ebx_available
6311         fi
6312     fi
6313     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6314     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
6315     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6316     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6317     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6318     # MSVC 2013 and newer can handle it fine.
6319     # If this declspec fails, force including stdlib.h before the restrict redefinition
6320     # happens in config.h.
6321     if [ $_restrict != restrict ]; then
6322         check_cc <<EOF || add_cflags -FIstdlib.h
6323 __declspec($_restrict) void* foo(int);
6324 EOF
6325     fi
6326     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6327     # Issue has been fixed in MSVC v19.00.24218.
6328     check_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6329         check_cflags -d2SSAOptimizer-
6330     # enable utf-8 source processing on VS2015 U2 and newer
6331     check_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6332         add_cflags -utf-8
6333 fi
6334
6335 for pfx in "" host_; do
6336     varname=${pfx%_}cc_type
6337     eval "type=\$$varname"
6338     if [ $type = "msvc" ]; then
6339         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6340 static inline int foo(int a) { return a; }
6341 EOF
6342     fi
6343 done
6344
6345 case $as_type in
6346     clang)
6347         add_asflags -Qunused-arguments
6348     ;;
6349 esac
6350
6351 case $ld_type in
6352     clang)
6353         check_ldflags -Qunused-arguments
6354     ;;
6355 esac
6356
6357 case $target_os in
6358     osf1)
6359         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
6360     ;;
6361 esac
6362
6363 enable frame_thread_encoder
6364
6365 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6366
6367 check_deps $CONFIG_LIST       \
6368            $CONFIG_EXTRA      \
6369            $HAVE_LIST         \
6370            $ALL_COMPONENTS    \
6371
6372 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"
6373
6374
6375 if test $target_os = "haiku"; then
6376     disable memalign
6377     disable posix_memalign
6378 fi
6379
6380 # add_dep lib dep
6381 # -> enable ${lib}_deps_${dep}
6382 # -> add $dep to ${lib}_deps only once
6383 add_dep() {
6384     lib=$1
6385     dep=$2
6386     enabled "${lib}_deps_${dep}" && return 0
6387     enable  "${lib}_deps_${dep}"
6388     prepend "${lib}_deps" $dep
6389 }
6390
6391 # merge deps lib components
6392 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
6393 merge_deps() {
6394     lib=$1
6395     shift
6396     for comp in $*; do
6397         enabled $comp || continue
6398         eval "dep=\"\$${comp}_deps\""
6399         for d in $dep; do
6400             add_dep $lib $d
6401         done
6402     done
6403 }
6404
6405 merge_deps libavfilter $FILTER_LIST
6406
6407 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6408
6409 for thread in $THREADS_LIST; do
6410     if enabled $thread; then
6411         test -n "$thread_type" &&
6412             die "ERROR: Only one thread type must be selected." ||
6413             thread_type="$thread"
6414     fi
6415 done
6416
6417 if disabled stdatomic_h; then
6418     if enabled atomics_gcc; then
6419         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6420     elif enabled atomics_win32; then
6421         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6422     elif enabled atomics_suncc; then
6423         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6424     elif enabled pthreads; then
6425         add_compat atomics/pthread/stdatomic.o
6426         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6427     else
6428         enabled threads && die "Threading is enabled, but no atomics are available"
6429         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6430     fi
6431 fi
6432
6433 # Check if requested libraries were found.
6434 for lib in $AUTODETECT_LIBS; do
6435     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6436 done
6437
6438 enabled zlib && add_cppflags -DZLIB_CONST
6439
6440 # conditional library dependencies, in linking order
6441 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6442 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6443 enabled aresample_filter    && prepend avfilter_deps "swresample"
6444 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6445 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6446 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6447 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6448 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6449 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6450 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6451 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6452 enabled pan_filter          && prepend avfilter_deps "swresample"
6453 enabled pp_filter           && prepend avfilter_deps "postproc"
6454 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6455 enabled resample_filter && prepend avfilter_deps "avresample"
6456 enabled sab_filter          && prepend avfilter_deps "swscale"
6457 enabled scale_filter    && prepend avfilter_deps "swscale"
6458 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6459 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6460 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6461 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6462 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6463 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6464 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6465 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6466 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6467
6468 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6469
6470 enabled opus_decoder    && prepend avcodec_deps "swresample"
6471
6472 expand_deps(){
6473     lib_deps=${1}_deps
6474     eval "deps=\$$lib_deps"
6475     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6476     unique $lib_deps
6477 }
6478
6479 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6480 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6481
6482 map 'expand_deps $v' $LIBRARY_LIST
6483
6484 license="LGPL version 2.1 or later"
6485 if enabled nonfree; then
6486     license="nonfree and unredistributable"
6487 elif enabled gplv3; then
6488     license="GPL version 3 or later"
6489 elif enabled lgplv3; then
6490     license="LGPL version 3 or later"
6491 elif enabled gpl; then
6492     license="GPL version 2 or later"
6493 fi
6494
6495 if test "$quiet" != "yes"; then
6496
6497 echo "install prefix            $prefix"
6498 echo "source path               $source_path"
6499 echo "C compiler                $cc"
6500 echo "C library                 $libc_type"
6501 if test "$host_cc" != "$cc"; then
6502     echo "host C compiler           $host_cc"
6503     echo "host C library            $host_libc_type"
6504 fi
6505 echo "ARCH                      $arch ($cpu)"
6506 if test "$build_suffix" != ""; then
6507     echo "build suffix              $build_suffix"
6508 fi
6509 if test "$progs_suffix" != ""; then
6510     echo "progs suffix              $progs_suffix"
6511 fi
6512 if test "$extra_version" != ""; then
6513     echo "version string suffix     $extra_version"
6514 fi
6515 echo "big-endian                ${bigendian-no}"
6516 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6517 if enabled x86; then
6518     echo "${yasmexe}                      ${yasm-no}"
6519     echo "MMX enabled               ${mmx-no}"
6520     echo "MMXEXT enabled            ${mmxext-no}"
6521     echo "3DNow! enabled            ${amd3dnow-no}"
6522     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6523     echo "SSE enabled               ${sse-no}"
6524     echo "SSSE3 enabled             ${ssse3-no}"
6525     echo "AESNI enabled             ${aesni-no}"
6526     echo "AVX enabled               ${avx-no}"
6527     echo "XOP enabled               ${xop-no}"
6528     echo "FMA3 enabled              ${fma3-no}"
6529     echo "FMA4 enabled              ${fma4-no}"
6530     echo "i686 features enabled     ${i686-no}"
6531     echo "CMOV is fast              ${fast_cmov-no}"
6532     echo "EBX available             ${ebx_available-no}"
6533     echo "EBP available             ${ebp_available-no}"
6534 fi
6535 if enabled aarch64; then
6536     echo "NEON enabled              ${neon-no}"
6537     echo "VFP enabled               ${vfp-no}"
6538 fi
6539 if enabled arm; then
6540     echo "ARMv5TE enabled           ${armv5te-no}"
6541     echo "ARMv6 enabled             ${armv6-no}"
6542     echo "ARMv6T2 enabled           ${armv6t2-no}"
6543     echo "VFP enabled               ${vfp-no}"
6544     echo "NEON enabled              ${neon-no}"
6545     echo "THUMB enabled             ${thumb-no}"
6546 fi
6547 if enabled mips; then
6548     echo "MIPS FPU enabled          ${mipsfpu-no}"
6549     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6550     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6551     echo "MIPS MSA enabled          ${msa-no}"
6552     echo "LOONGSON MMI enabled      ${mmi-no}"
6553 fi
6554 if enabled ppc; then
6555     echo "AltiVec enabled           ${altivec-no}"
6556     echo "VSX enabled               ${vsx-no}"
6557     echo "POWER8 enabled            ${power8-no}"
6558     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6559     echo "dcbzl available           ${dcbzl-no}"
6560 fi
6561 echo "debug symbols             ${debug-no}"
6562 echo "strip symbols             ${stripping-no}"
6563 echo "optimize for size         ${small-no}"
6564 echo "optimizations             ${optimizations-no}"
6565 echo "static                    ${static-no}"
6566 echo "shared                    ${shared-no}"
6567 echo "postprocessing support    ${postproc-no}"
6568 echo "network support           ${network-no}"
6569 echo "threading support         ${thread_type-no}"
6570 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6571 echo "texi2html enabled         ${texi2html-no}"
6572 echo "perl enabled              ${perl-no}"
6573 echo "pod2man enabled           ${pod2man-no}"
6574 echo "makeinfo enabled          ${makeinfo-no}"
6575 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6576 test -n "$random_seed" &&
6577     echo "random seed               ${random_seed}"
6578 echo
6579
6580 echo "External libraries:"
6581 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_in_columns
6582 echo
6583
6584 echo "External libraries providing hardware acceleration:"
6585 print_enabled '' $HWACCEL_LIBRARY_LIST | print_in_columns
6586 echo
6587
6588 echo "Libraries:"
6589 print_enabled '' $LIBRARY_LIST | print_in_columns
6590 echo
6591
6592 echo "Programs:"
6593 print_enabled '' $PROGRAM_LIST | print_in_columns
6594 echo
6595
6596 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6597     echo "Enabled ${type}s:"
6598     eval list=\$$(toupper $type)_LIST
6599     print_enabled '_*' $list | print_in_columns
6600     echo
6601 done
6602
6603 echo "License: $license"
6604
6605 echo "Creating configuration files ..."
6606
6607 fi # test "$quiet" != "yes"
6608
6609 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6610
6611 enabled stripping || strip="echo skipping strip"
6612
6613 config_files="$TMPH config.mak doc/config.texi"
6614
6615 cat > config.mak <<EOF
6616 # Automatically generated by configure - do not modify!
6617 ifndef FFMPEG_CONFIG_MAK
6618 FFMPEG_CONFIG_MAK=1
6619 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6620 prefix=$prefix
6621 LIBDIR=\$(DESTDIR)$libdir
6622 SHLIBDIR=\$(DESTDIR)$shlibdir
6623 INCDIR=\$(DESTDIR)$incdir
6624 BINDIR=\$(DESTDIR)$bindir
6625 DATADIR=\$(DESTDIR)$datadir
6626 DOCDIR=\$(DESTDIR)$docdir
6627 MANDIR=\$(DESTDIR)$mandir
6628 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6629 INSTALL_NAME_DIR=$install_name_dir
6630 SRC_PATH=$source_path
6631 SRC_LINK=$source_link
6632 ifndef MAIN_MAKEFILE
6633 SRC_PATH:=\$(SRC_PATH:.%=..%)
6634 endif
6635 CC_IDENT=$cc_ident
6636 ARCH=$arch
6637 INTRINSICS=$intrinsics
6638 CC=$cc
6639 CXX=$cxx
6640 AS=$as
6641 OBJCC=$objcc
6642 LD=$ld
6643 DEPCC=$dep_cc
6644 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6645 DEPAS=$as
6646 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6647 YASM=$yasmexe
6648 DEPYASM=$yasmexe
6649 AR=$ar
6650 ARFLAGS=$arflags
6651 AR_O=$ar_o
6652 RANLIB=$ranlib
6653 STRIP=$strip
6654 CP=cp -p
6655 LN_S=$ln_s
6656 CPPFLAGS=$CPPFLAGS
6657 CFLAGS=$CFLAGS
6658 CXXFLAGS=$CXXFLAGS
6659 OBJCFLAGS=$OBJCFLAGS
6660 ASFLAGS=$ASFLAGS
6661 AS_C=$AS_C
6662 AS_O=$AS_O
6663 OBJCC_C=$OBJCC_C
6664 OBJCC_E=$OBJCC_E
6665 OBJCC_O=$OBJCC_O
6666 CC_C=$CC_C
6667 CC_E=$CC_E
6668 CC_O=$CC_O
6669 CXX_C=$CXX_C
6670 CXX_O=$CXX_O
6671 LD_O=$LD_O
6672 LD_LIB=$LD_LIB
6673 LD_PATH=$LD_PATH
6674 DLLTOOL=$dlltool
6675 WINDRES=$windres
6676 DEPWINDRES=$dep_cc
6677 DOXYGEN=$doxygen
6678 LDFLAGS=$LDFLAGS
6679 LDEXEFLAGS=$LDEXEFLAGS
6680 LDLIBFLAGS=$LDLIBFLAGS
6681 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
6682 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
6683 YASMFLAGS=$YASMFLAGS
6684 BUILDSUF=$build_suffix
6685 PROGSSUF=$progs_suffix
6686 FULLNAME=$FULLNAME
6687 LIBPREF=$LIBPREF
6688 LIBSUF=$LIBSUF
6689 LIBNAME=$LIBNAME
6690 SLIBPREF=$SLIBPREF
6691 SLIBSUF=$SLIBSUF
6692 EXESUF=$EXESUF
6693 EXTRA_VERSION=$extra_version
6694 CCDEP=$CCDEP
6695 CXXDEP=$CXXDEP
6696 CCDEP_FLAGS=$CCDEP_FLAGS
6697 ASDEP=$ASDEP
6698 ASDEP_FLAGS=$ASDEP_FLAGS
6699 CC_DEPFLAGS=$CC_DEPFLAGS
6700 AS_DEPFLAGS=$AS_DEPFLAGS
6701 HOSTCC=$host_cc
6702 HOSTLD=$host_ld
6703 HOSTCFLAGS=$host_cflags
6704 HOSTCPPFLAGS=$host_cppflags
6705 HOSTEXESUF=$HOSTEXESUF
6706 HOSTLDFLAGS=$host_ldflags
6707 HOSTEXTRALIBS=$host_extralibs
6708 DEPHOSTCC=$host_cc
6709 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
6710 HOSTCCDEP=$HOSTCCDEP
6711 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
6712 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
6713 HOSTCC_C=$HOSTCC_C
6714 HOSTCC_O=$HOSTCC_O
6715 HOSTLD_O=$HOSTLD_O
6716 TARGET_EXEC=$target_exec $target_exec_args
6717 TARGET_PATH=$target_path
6718 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
6719 CFLAGS-ffplay=${sdl2_cflags}
6720 CFLAGS_HEADERS=$CFLAGS_HEADERS
6721 ZLIB=$($ldflags_filter -lz)
6722 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
6723 EXTRALIBS=$extralibs
6724 COMPAT_OBJS=$compat_objs
6725 INSTALL=$install
6726 LIBTARGET=${LIBTARGET}
6727 SLIBNAME=${SLIBNAME}
6728 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
6729 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
6730 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
6731 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
6732 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
6733 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
6734 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
6735 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
6736 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
6737 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
6738 NOREDZONE_FLAGS=$noredzone_flags
6739 EOF
6740
6741 get_version(){
6742     lcname=lib${1}
6743     name=$(toupper $lcname)
6744     file=$source_path/$lcname/version.h
6745     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
6746     enabled raise_major && eval ${name}_VERSION_MAJOR=$((${name}_VERSION_MAJOR+100))
6747     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
6748     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
6749     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
6750     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
6751 }
6752
6753 map 'get_version $v' $LIBRARY_LIST
6754
6755 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> config.mak' $LIBRARY_LIST
6756
6757 print_program_extralibs(){
6758     eval "program_extralibs=\$${1}_extralibs"
6759     eval echo "EXTRALIBS-${1}=${program_extralibs}" >> config.mak
6760 }
6761
6762 map 'print_program_extralibs $v' $PROGRAM_LIST
6763
6764 cat > $TMPH <<EOF
6765 /* Automatically generated by configure - do not modify! */
6766 #ifndef FFMPEG_CONFIG_H
6767 #define FFMPEG_CONFIG_H
6768 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
6769 #define FFMPEG_LICENSE "$(c_escape $license)"
6770 #define CONFIG_THIS_YEAR 2017
6771 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
6772 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
6773 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
6774 #define av_restrict $_restrict
6775 #define EXTERN_PREFIX "${extern_prefix}"
6776 #define EXTERN_ASM ${extern_prefix}
6777 #define BUILDSUF "$build_suffix"
6778 #define SLIBSUF "$SLIBSUF"
6779 #define HAVE_MMX2 HAVE_MMXEXT
6780 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
6781 EOF
6782
6783 test -n "$assert_level" &&
6784     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
6785
6786 test -n "$malloc_prefix" &&
6787     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
6788
6789 if enabled yasm; then
6790     append config_files $TMPASM
6791     printf '' >$TMPASM
6792 fi
6793
6794 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
6795
6796
6797 mkdir -p doc
6798 mkdir -p tests
6799 mkdir -p tests/api
6800 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
6801
6802 print_config ARCH_   "$config_files" $ARCH_LIST
6803 print_config HAVE_   "$config_files" $HAVE_LIST
6804 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
6805                                      $CONFIG_EXTRA      \
6806                                      $ALL_COMPONENTS    \
6807
6808 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
6809 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
6810
6811 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
6812 cp_if_changed $TMPH config.h
6813 touch .config
6814
6815 enabled yasm && cp_if_changed $TMPASM config.asm
6816
6817 cat > $TMPH <<EOF
6818 /* Generated by ffconf */
6819 #ifndef AVUTIL_AVCONFIG_H
6820 #define AVUTIL_AVCONFIG_H
6821 EOF
6822
6823 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
6824
6825 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
6826
6827 cp_if_changed $TMPH libavutil/avconfig.h
6828
6829 # generate the lists of enabled components
6830 print_enabled_components(){
6831     file=$1
6832     struct_name=$2
6833     name=$3
6834     shift 3
6835     echo "static const $struct_name *$name[] = {" > $TMPH
6836     for c in $*; do
6837         enabled $c && printf "    &ff_%s,\n" $c >> $TMPH
6838     done
6839     echo "    NULL };" >> $TMPH
6840     cp_if_changed $TMPH $file
6841 }
6842
6843 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
6844 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
6845
6846 if test -n "$WARNINGS"; then
6847     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
6848     enabled fatal_warnings && exit 1
6849 fi
6850
6851 # build pkg-config files
6852
6853 lib_version(){
6854     eval printf "\"lib${1}${build_suffix} >= \$LIB$(toupper ${1})_VERSION, \""
6855 }
6856
6857 pkgconfig_generate(){
6858     name=$1
6859     shortname=${name#lib}${build_suffix}
6860     comment=$2
6861     version=$3
6862     libs=$4
6863     requires=$(map 'lib_version $v' $(eval echo \$${name#lib}_deps))
6864     requires=${requires%, }
6865     enabled ${name#lib} || return 0
6866     mkdir -p $name
6867     cat <<EOF > $name/$name${build_suffix}.pc
6868 prefix=$prefix
6869 exec_prefix=\${prefix}
6870 libdir=$libdir
6871 includedir=$incdir
6872
6873 Name: $name
6874 Description: $comment
6875 Version: $version
6876 Requires: $(enabled shared || echo $requires)
6877 Requires.private: $(enabled shared && echo $requires)
6878 Conflicts:
6879 Libs: -L\${libdir} $(enabled rpath && echo "-Wl,-rpath,\${libdir}") -l${shortname} $(enabled shared || echo $libs)
6880 Libs.private: $(enabled shared && echo $libs)
6881 Cflags: -I\${includedir}
6882 EOF
6883
6884 mkdir -p doc/examples/pc-uninstalled
6885 includedir=${source_path}
6886 [ "$includedir" = . ] && includedir="\${pcfiledir}/../../.."
6887     cat <<EOF > doc/examples/pc-uninstalled/${name}-uninstalled.pc
6888 prefix=
6889 exec_prefix=
6890 libdir=\${pcfiledir}/../../../$name
6891 includedir=${includedir}
6892
6893 Name: $name
6894 Description: $comment
6895 Version: $version
6896 Requires: $requires
6897 Conflicts:
6898 Libs: -L\${libdir} -Wl,-rpath,\${libdir} -l${shortname} $(enabled shared || echo $libs)
6899 Cflags: -I\${includedir}
6900 EOF
6901 }
6902
6903 pkgconfig_generate libavutil     "FFmpeg utility library"               "$LIBAVUTIL_VERSION"     "$LIBRT $LIBM"
6904 pkgconfig_generate libavcodec    "FFmpeg codec library"                 "$LIBAVCODEC_VERSION"    "$extralibs"
6905 pkgconfig_generate libavformat   "FFmpeg container format library"      "$LIBAVFORMAT_VERSION"   "$extralibs"
6906 pkgconfig_generate libavdevice   "FFmpeg device handling library"       "$LIBAVDEVICE_VERSION"   "$extralibs"
6907 pkgconfig_generate libavfilter   "FFmpeg audio/video filtering library" "$LIBAVFILTER_VERSION"   "$extralibs"
6908 pkgconfig_generate libpostproc   "FFmpeg postprocessing library"        "$LIBPOSTPROC_VERSION"   ""
6909 pkgconfig_generate libavresample "Libav audio resampling library"       "$LIBAVRESAMPLE_VERSION" "$LIBM"
6910 pkgconfig_generate libswscale    "FFmpeg image rescaling library"       "$LIBSWSCALE_VERSION"    "$LIBM"
6911 pkgconfig_generate libswresample "FFmpeg audio resampling library"      "$LIBSWRESAMPLE_VERSION" "$LIBM $LIBSOXR"