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}_libs"   $pkg_libs
1251 }
1252
1253 check_exec(){
1254     check_ld "cc" "$@" && { 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}_libs")
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 require_libfreetype(){
1358     log require_libfreetype "$@"
1359     pkg="freetype2"
1360     check_cmd $pkg_config --exists --print-errors $pkg \
1361       || die "ERROR: $pkg not found"
1362     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1363     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1364     {
1365         echo "#include <ft2build.h>"
1366         echo "#include FT_FREETYPE_H"
1367         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1368         echo "int main(void) { return 0; }"
1369     } | check_ld "cc" $pkg_cflags $pkg_libs \
1370       && set_safe "${pkg}_cflags" $pkg_cflags \
1371       && set_safe "${pkg}_libs"   $pkg_libs \
1372       || die "ERROR: $pkg not found"
1373     add_cflags    $(get_safe "${pkg}_cflags")
1374     add_extralibs $(get_safe "${pkg}_libs")
1375 }
1376
1377 hostcc_e(){
1378     eval printf '%s\\n' $HOSTCC_E
1379 }
1380
1381 hostcc_o(){
1382     eval printf '%s\\n' $HOSTCC_O
1383 }
1384
1385 check_host_cc(){
1386     log check_host_cc "$@"
1387     cat > $TMPC
1388     log_file $TMPC
1389     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1390 }
1391
1392 check_host_cpp(){
1393     log check_host_cpp "$@"
1394     cat > $TMPC
1395     log_file $TMPC
1396     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1397 }
1398
1399 check_host_cppflags(){
1400     log check_host_cppflags "$@"
1401     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1402 int x;
1403 EOF
1404 }
1405
1406 check_host_cflags(){
1407     log check_host_cflags "$@"
1408     set -- $($host_cflags_filter "$@")
1409     check_host_cc "$@" <<EOF && append host_cflags "$@"
1410 int x;
1411 EOF
1412 }
1413
1414 check_host_cpp_condition(){
1415     log check_host_cpp_condition "$@"
1416     header=$1
1417     condition=$2
1418     shift 2
1419     check_host_cpp "$@" <<EOF
1420 #include <$header>
1421 #if !($condition)
1422 #error "unsatisfied condition: $condition"
1423 #endif
1424 EOF
1425 }
1426
1427 cp_if_changed(){
1428     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1429     mkdir -p "$(dirname $2)"
1430     cp -f "$1" "$2"
1431 }
1432
1433 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1434 # system-dependent things.
1435
1436 AVCODEC_COMPONENTS="
1437     bsfs
1438     decoders
1439     encoders
1440     hwaccels
1441     parsers
1442 "
1443
1444 AVDEVICE_COMPONENTS="
1445     indevs
1446     outdevs
1447 "
1448 AVFILTER_COMPONENTS="
1449     filters
1450 "
1451 AVFORMAT_COMPONENTS="
1452     demuxers
1453     muxers
1454     protocols
1455 "
1456
1457 AVRESAMPLE_COMPONENTS=""
1458 AVUTIL_COMPONENTS=""
1459
1460 COMPONENT_LIST="
1461     $AVCODEC_COMPONENTS
1462     $AVDEVICE_COMPONENTS
1463     $AVFILTER_COMPONENTS
1464     $AVFORMAT_COMPONENTS
1465     $AVRESAMPLE_COMPONENTS
1466     $AVUTIL_COMPONENTS
1467 "
1468
1469 EXAMPLE_LIST="
1470     avio_dir_cmd_example
1471     avio_reading_example
1472     decode_audio_example
1473     decode_video_example
1474     demuxing_decoding_example
1475     encode_audio_example
1476     encode_video_example
1477     extract_mvs_example
1478     filter_audio_example
1479     filtering_audio_example
1480     filtering_video_example
1481     http_multiclient_example
1482     metadata_example
1483     muxing_example
1484     qsvdec_example
1485     remuxing_example
1486     resampling_audio_example
1487     scaling_video_example
1488     transcode_aac_example
1489     transcoding_example
1490 "
1491 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1492     bzlib
1493     iconv
1494     libxcb
1495     libxcb_shm
1496     libxcb_shape
1497     libxcb_xfixes
1498     lzma
1499     schannel
1500     sdl
1501     sdl2
1502     securetransport
1503     xlib
1504     zlib
1505 "
1506
1507 EXTERNAL_LIBRARY_GPL_LIST="
1508     avisynth
1509     frei0r
1510     libcdio
1511     librubberband
1512     libvidstab
1513     libx264
1514     libx265
1515     libxavs
1516     libxvid
1517 "
1518
1519 EXTERNAL_LIBRARY_NONFREE_LIST="
1520     decklink
1521     libfdk_aac
1522     openssl
1523 "
1524
1525 EXTERNAL_LIBRARY_VERSION3_LIST="
1526     gmp
1527     libopencore_amrnb
1528     libopencore_amrwb
1529     libvo_amrwbenc
1530 "
1531
1532 EXTERNAL_LIBRARY_GPLV3_LIST="
1533     libsmbclient
1534 "
1535
1536 EXTERNAL_LIBRARY_LIST="
1537     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1538     $EXTERNAL_LIBRARY_GPL_LIST
1539     $EXTERNAL_LIBRARY_NONFREE_LIST
1540     $EXTERNAL_LIBRARY_VERSION3_LIST
1541     $EXTERNAL_LIBRARY_GPLV3_LIST
1542     chromaprint
1543     crystalhd
1544     gcrypt
1545     gnutls
1546     jni
1547     ladspa
1548     libass
1549     libbluray
1550     libbs2b
1551     libcaca
1552     libcelt
1553     libdc1394
1554     libflite
1555     libfontconfig
1556     libfreetype
1557     libfribidi
1558     libgme
1559     libgsm
1560     libiec61883
1561     libilbc
1562     libkvazaar
1563     libmodplug
1564     libmp3lame
1565     libnut
1566     libopencv
1567     libopenh264
1568     libopenjpeg
1569     libopenmpt
1570     libopus
1571     libpulse
1572     librtmp
1573     libschroedinger
1574     libshine
1575     libsmbclient
1576     libsnappy
1577     libsoxr
1578     libspeex
1579     libssh
1580     libtesseract
1581     libtheora
1582     libtwolame
1583     libv4l2
1584     libvorbis
1585     libvpx
1586     libwavpack
1587     libwebp
1588     libzimg
1589     libzmq
1590     libzvbi
1591     mediacodec
1592     netcdf
1593     openal
1594     opencl
1595     opengl
1596     videotoolbox
1597 "
1598 HWACCEL_AUTODETECT_LIBRARY_LIST="
1599     audiotoolbox
1600     cuda
1601     cuvid
1602     d3d11va
1603     dxva2
1604     nvenc
1605     vaapi
1606     vda
1607     vdpau
1608     videotoolbox_hwaccel
1609     xvmc
1610 "
1611
1612 HWACCEL_LIBRARY_NONFREE_LIST="
1613     libnpp
1614 "
1615
1616 HWACCEL_LIBRARY_LIST="
1617     $HWACCEL_AUTODETECT_LIBRARY_LIST
1618     $HWACCEL_LIBRARY_NONFREE_LIST
1619     libmfx
1620     mmal
1621     omx
1622 "
1623
1624 DOCUMENT_LIST="
1625     doc
1626     htmlpages
1627     manpages
1628     podpages
1629     txtpages
1630 "
1631
1632 FEATURE_LIST="
1633     ftrapv
1634     gray
1635     hardcoded_tables
1636     omx_rpi
1637     runtime_cpudetect
1638     safe_bitstream_reader
1639     shared
1640     small
1641     static
1642     swscale_alpha
1643 "
1644
1645 LIBRARY_LIST="
1646     avcodec
1647     avdevice
1648     avfilter
1649     avformat
1650     avresample
1651     avutil
1652     postproc
1653     swresample
1654     swscale
1655 "
1656
1657 LICENSE_LIST="
1658     gpl
1659     nonfree
1660     version3
1661 "
1662
1663 PROGRAM_LIST="
1664     ffplay
1665     ffprobe
1666     ffserver
1667     ffmpeg
1668 "
1669
1670 SUBSYSTEM_LIST="
1671     dct
1672     dwt
1673     error_resilience
1674     faan
1675     fast_unaligned
1676     fft
1677     lsp
1678     lzo
1679     mdct
1680     pixelutils
1681     network
1682     rdft
1683 "
1684
1685 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1686 CONFIG_LIST="
1687     $DOCUMENT_LIST
1688     $EXAMPLE_LIST
1689     $EXTERNAL_LIBRARY_LIST
1690     $HWACCEL_LIBRARY_LIST
1691     $FEATURE_LIST
1692     $LICENSE_LIST
1693     $LIBRARY_LIST
1694     $PROGRAM_LIST
1695     $SUBSYSTEM_LIST
1696     fontconfig
1697     memory_poisoning
1698     neon_clobber_test
1699     pic
1700     raise_major
1701     thumb
1702     valgrind_backtrace
1703     xmm_clobber_test
1704     $COMPONENT_LIST
1705 "
1706
1707 THREADS_LIST="
1708     pthreads
1709     os2threads
1710     w32threads
1711 "
1712
1713 ATOMICS_LIST="
1714     atomics_gcc
1715     atomics_suncc
1716     atomics_win32
1717 "
1718
1719 AUTODETECT_LIBS="
1720     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1721     $HWACCEL_AUTODETECT_LIBRARY_LIST
1722     $THREADS_LIST
1723 "
1724
1725 ARCH_LIST="
1726     aarch64
1727     alpha
1728     arm
1729     avr32
1730     avr32_ap
1731     avr32_uc
1732     bfin
1733     ia64
1734     m68k
1735     mips
1736     mips64
1737     parisc
1738     ppc
1739     ppc64
1740     s390
1741     sh4
1742     sparc
1743     sparc64
1744     tilegx
1745     tilepro
1746     tomi
1747     x86
1748     x86_32
1749     x86_64
1750 "
1751
1752 ARCH_EXT_LIST_ARM="
1753     armv5te
1754     armv6
1755     armv6t2
1756     armv8
1757     neon
1758     vfp
1759     vfpv3
1760     setend
1761 "
1762
1763 ARCH_EXT_LIST_MIPS="
1764     mipsfpu
1765     mips32r2
1766     mips32r5
1767     mips64r2
1768     mips32r6
1769     mips64r6
1770     mipsdsp
1771     mipsdspr2
1772     msa
1773 "
1774
1775 ARCH_EXT_LIST_LOONGSON="
1776     loongson2
1777     loongson3
1778     mmi
1779 "
1780
1781 ARCH_EXT_LIST_X86_SIMD="
1782     aesni
1783     amd3dnow
1784     amd3dnowext
1785     avx
1786     avx2
1787     fma3
1788     fma4
1789     mmx
1790     mmxext
1791     sse
1792     sse2
1793     sse3
1794     sse4
1795     sse42
1796     ssse3
1797     xop
1798 "
1799
1800 ARCH_EXT_LIST_PPC="
1801     altivec
1802     dcbzl
1803     ldbrx
1804     power8
1805     ppc4xx
1806     vsx
1807 "
1808
1809 ARCH_EXT_LIST_X86="
1810     $ARCH_EXT_LIST_X86_SIMD
1811     cpunop
1812     i686
1813 "
1814
1815 ARCH_EXT_LIST="
1816     $ARCH_EXT_LIST_ARM
1817     $ARCH_EXT_LIST_PPC
1818     $ARCH_EXT_LIST_X86
1819     $ARCH_EXT_LIST_MIPS
1820     $ARCH_EXT_LIST_LOONGSON
1821 "
1822
1823 ARCH_FEATURES="
1824     aligned_stack
1825     fast_64bit
1826     fast_clz
1827     fast_cmov
1828     local_aligned_8
1829     local_aligned_16
1830     local_aligned_32
1831     simd_align_16
1832     simd_align_32
1833 "
1834
1835 BUILTIN_LIST="
1836     atomic_cas_ptr
1837     machine_rw_barrier
1838     MemoryBarrier
1839     mm_empty
1840     rdtsc
1841     sarestart
1842     sem_timedwait
1843     sync_val_compare_and_swap
1844 "
1845 HAVE_LIST_CMDLINE="
1846     inline_asm
1847     symver
1848     yasm
1849 "
1850
1851 HAVE_LIST_PUB="
1852     bigendian
1853     fast_unaligned
1854 "
1855
1856 HEADERS_LIST="
1857     alsa_asoundlib_h
1858     altivec_h
1859     arpa_inet_h
1860     asm_types_h
1861     cdio_paranoia_h
1862     cdio_paranoia_paranoia_h
1863     cuda_h
1864     dispatch_dispatch_h
1865     dev_bktr_ioctl_bt848_h
1866     dev_bktr_ioctl_meteor_h
1867     dev_ic_bt8xx_h
1868     dev_video_bktr_ioctl_bt848_h
1869     dev_video_meteor_ioctl_meteor_h
1870     direct_h
1871     dirent_h
1872     dlfcn_h
1873     d3d11_h
1874     dxva_h
1875     ES2_gl_h
1876     gsm_h
1877     io_h
1878     mach_mach_time_h
1879     machine_ioctl_bt848_h
1880     machine_ioctl_meteor_h
1881     malloc_h
1882     opencv2_core_core_c_h
1883     openjpeg_2_1_openjpeg_h
1884     openjpeg_2_0_openjpeg_h
1885     openjpeg_1_5_openjpeg_h
1886     OpenGL_gl3_h
1887     poll_h
1888     sndio_h
1889     soundcard_h
1890     stdatomic_h
1891     sys_mman_h
1892     sys_param_h
1893     sys_resource_h
1894     sys_select_h
1895     sys_soundcard_h
1896     sys_time_h
1897     sys_un_h
1898     sys_videoio_h
1899     termios_h
1900     udplite_h
1901     unistd_h
1902     valgrind_valgrind_h
1903     windows_h
1904     winsock2_h
1905 "
1906
1907 INTRINSICS_LIST="
1908     intrinsics_neon
1909 "
1910
1911 COMPLEX_FUNCS="
1912     cabs
1913     cexp
1914 "
1915
1916 MATH_FUNCS="
1917     atanf
1918     atan2f
1919     cbrt
1920     cbrtf
1921     copysign
1922     cosf
1923     erf
1924     exp2
1925     exp2f
1926     expf
1927     hypot
1928     isfinite
1929     isinf
1930     isnan
1931     ldexpf
1932     llrint
1933     llrintf
1934     log2
1935     log2f
1936     log10f
1937     lrint
1938     lrintf
1939     powf
1940     rint
1941     round
1942     roundf
1943     sinf
1944     trunc
1945     truncf
1946 "
1947
1948 SYSTEM_FUNCS="
1949     access
1950     aligned_malloc
1951     arc4random
1952     clock_gettime
1953     closesocket
1954     CommandLineToArgvW
1955     CoTaskMemFree
1956     CryptGenRandom
1957     dlopen
1958     fcntl
1959     flt_lim
1960     fork
1961     getaddrinfo
1962     gethrtime
1963     getopt
1964     GetProcessAffinityMask
1965     GetProcessMemoryInfo
1966     GetProcessTimes
1967     getrusage
1968     GetSystemTimeAsFileTime
1969     gettimeofday
1970     glob
1971     glXGetProcAddress
1972     gmtime_r
1973     inet_aton
1974     isatty
1975     jack_port_get_latency_range
1976     kbhit
1977     LoadLibrary
1978     localtime_r
1979     lstat
1980     lzo1x_999_compress
1981     mach_absolute_time
1982     MapViewOfFile
1983     memalign
1984     mkstemp
1985     mmap
1986     mprotect
1987     nanosleep
1988     PeekNamedPipe
1989     posix_memalign
1990     pthread_cancel
1991     sched_getaffinity
1992     SetConsoleTextAttribute
1993     SetConsoleCtrlHandler
1994     setmode
1995     setrlimit
1996     Sleep
1997     strerror_r
1998     sysconf
1999     sysctl
2000     usleep
2001     UTGetOSTypeFromString
2002     VirtualAlloc
2003     wglGetProcAddress
2004 "
2005
2006 TOOLCHAIN_FEATURES="
2007     as_dn_directive
2008     as_fpu_directive
2009     as_func
2010     as_object_arch
2011     asm_mod_q
2012     attribute_may_alias
2013     attribute_packed
2014     ebp_available
2015     ebx_available
2016     gnu_as
2017     gnu_windres
2018     ibm_asm
2019     inline_asm_direct_symbol_refs
2020     inline_asm_labels
2021     inline_asm_nonlocal_labels
2022     pragma_deprecated
2023     rsync_contimeout
2024     symver_asm_label
2025     symver_gnu_asm
2026     vfp_args
2027     xform_asm
2028     xmm_clobbers
2029 "
2030
2031 TYPES_LIST="
2032     CONDITION_VARIABLE_Ptr
2033     socklen_t
2034     struct_addrinfo
2035     struct_group_source_req
2036     struct_ip_mreq_source
2037     struct_ipv6_mreq
2038     struct_msghdr_msg_flags
2039     struct_pollfd
2040     struct_rusage_ru_maxrss
2041     struct_sctp_event_subscribe
2042     struct_sockaddr_in6
2043     struct_sockaddr_sa_len
2044     struct_sockaddr_storage
2045     struct_stat_st_mtim_tv_nsec
2046     struct_v4l2_frmivalenum_discrete
2047 "
2048
2049 HAVE_LIST="
2050     $ARCH_EXT_LIST
2051     $(add_suffix _external $ARCH_EXT_LIST)
2052     $(add_suffix _inline   $ARCH_EXT_LIST)
2053     $ARCH_FEATURES
2054     $ATOMICS_LIST
2055     $BUILTIN_LIST
2056     $COMPLEX_FUNCS
2057     $HAVE_LIST_CMDLINE
2058     $HAVE_LIST_PUB
2059     $HEADERS_LIST
2060     $INTRINSICS_LIST
2061     $MATH_FUNCS
2062     $SYSTEM_FUNCS
2063     $THREADS_LIST
2064     $TOOLCHAIN_FEATURES
2065     $TYPES_LIST
2066     atomics_native
2067     dos_paths
2068     dxva2_lib
2069     dxva2api_cobj
2070     libc_msvcrt
2071     makeinfo
2072     makeinfo_html
2073     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2074     perl
2075     pod2man
2076     sdl2
2077     section_data_rel_ro
2078     texi2html
2079     threads
2080     vaapi_drm
2081     vaapi_x11
2082     vdpau_x11
2083     winrt
2084 "
2085
2086 # options emitted with CONFIG_ prefix but not available on the command line
2087 CONFIG_EXTRA="
2088     aandcttables
2089     ac3dsp
2090     audio_frame_queue
2091     audiodsp
2092     blockdsp
2093     bswapdsp
2094     cabac
2095     dirac_parse
2096     dvprofile
2097     exif
2098     faandct
2099     faanidct
2100     fdctdsp
2101     flacdsp
2102     fmtconvert
2103     frame_thread_encoder
2104     g722dsp
2105     golomb
2106     gplv3
2107     h263dsp
2108     h264chroma
2109     h264dsp
2110     h264parse
2111     h264pred
2112     h264qpel
2113     hevcparse
2114     hpeldsp
2115     huffman
2116     huffyuvdsp
2117     huffyuvencdsp
2118     idctdsp
2119     iirfilter
2120     mdct15
2121     intrax8
2122     iso_media
2123     ividsp
2124     jpegtables
2125     lgplv3
2126     libx262
2127     llauddsp
2128     llviddsp
2129     llvidencdsp
2130     lpc
2131     lzf
2132     me_cmp
2133     mpeg_er
2134     mpegaudio
2135     mpegaudiodsp
2136     mpegaudioheader
2137     mpegvideo
2138     mpegvideoenc
2139     mss34dsp
2140     pixblockdsp
2141     qpeldsp
2142     qsv
2143     qsvdec
2144     qsvenc
2145     rangecoder
2146     riffdec
2147     riffenc
2148     rtpdec
2149     rtpenc_chain
2150     rv34dsp
2151     sinewin
2152     snappy
2153     srtp
2154     startcode
2155     texturedsp
2156     texturedspenc
2157     tpeldsp
2158     vaapi_encode
2159     vc1dsp
2160     videodsp
2161     vp3dsp
2162     vp56dsp
2163     vp8dsp
2164     vt_bt2020
2165     wma_freqs
2166     wmv2dsp
2167 "
2168
2169 CMDLINE_SELECT="
2170     $ARCH_EXT_LIST
2171     $CONFIG_LIST
2172     $HAVE_LIST_CMDLINE
2173     $THREADS_LIST
2174     asm
2175     cross_compile
2176     debug
2177     extra_warnings
2178     logging
2179     lto
2180     optimizations
2181     rpath
2182     stripping
2183 "
2184
2185 PATHS_LIST="
2186     bindir
2187     datadir
2188     docdir
2189     incdir
2190     libdir
2191     mandir
2192     pkgconfigdir
2193     prefix
2194     shlibdir
2195     install_name_dir
2196 "
2197
2198 CMDLINE_SET="
2199     $PATHS_LIST
2200     ar
2201     arch
2202     as
2203     assert_level
2204     build_suffix
2205     cc
2206     objcc
2207     cpu
2208     cross_prefix
2209     custom_allocator
2210     cxx
2211     dep_cc
2212     doxygen
2213     env
2214     extra_version
2215     gas
2216     host_cc
2217     host_cflags
2218     host_ld
2219     host_ldflags
2220     host_libs
2221     host_os
2222     install
2223     ld
2224     ln_s
2225     logfile
2226     malloc_prefix
2227     nm
2228     optflags
2229     pkg_config
2230     pkg_config_flags
2231     progs_suffix
2232     random_seed
2233     ranlib
2234     samples
2235     strip
2236     sws_max_filter_size
2237     sysinclude
2238     sysroot
2239     target_exec
2240     target_os
2241     target_path
2242     target_samples
2243     tempprefix
2244     toolchain
2245     valgrind
2246     yasmexe
2247 "
2248
2249 CMDLINE_APPEND="
2250     extra_cflags
2251     extra_cxxflags
2252     extra_objcflags
2253     host_cppflags
2254 "
2255
2256 # code dependency declarations
2257
2258 # architecture extensions
2259
2260 armv5te_deps="arm"
2261 armv6_deps="arm"
2262 armv6t2_deps="arm"
2263 armv8_deps="aarch64"
2264 neon_deps_any="aarch64 arm"
2265 intrinsics_neon_deps="neon"
2266 vfp_deps_any="aarch64 arm"
2267 vfpv3_deps="vfp"
2268 setend_deps="arm"
2269
2270 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2271
2272 loongson2_deps="mips"
2273 loongson3_deps="mips"
2274 mipsfpu_deps="mips"
2275 mipsdsp_deps="mips"
2276 mipsdspr2_deps="mips"
2277 mips32r2_deps="mips"
2278 mips32r5_deps="mips"
2279 mips32r6_deps="mips"
2280 mips64r2_deps="mips"
2281 mips64r6_deps="mips"
2282 msa_deps="mipsfpu"
2283 mmi_deps="mips"
2284
2285 altivec_deps="ppc"
2286 dcbzl_deps="ppc"
2287 ldbrx_deps="ppc"
2288 ppc4xx_deps="ppc"
2289 vsx_deps="altivec"
2290 power8_deps="vsx"
2291
2292 cpunop_deps="i686"
2293 x86_64_select="i686"
2294 x86_64_suggest="fast_cmov"
2295
2296 amd3dnow_deps="mmx"
2297 amd3dnowext_deps="amd3dnow"
2298 i686_deps="x86"
2299 mmx_deps="x86"
2300 mmxext_deps="mmx"
2301 sse_deps="mmxext"
2302 sse2_deps="sse"
2303 sse3_deps="sse2"
2304 ssse3_deps="sse3"
2305 sse4_deps="ssse3"
2306 sse42_deps="sse4"
2307 aesni_deps="sse42"
2308 avx_deps="sse42"
2309 xop_deps="avx"
2310 fma3_deps="avx"
2311 fma4_deps="avx"
2312 avx2_deps="avx"
2313
2314 mmx_external_deps="yasm"
2315 mmx_inline_deps="inline_asm"
2316 mmx_suggest="mmx_external mmx_inline"
2317
2318 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2319     eval dep=\$${ext}_deps
2320     eval ${ext}_external_deps='"${dep}_external"'
2321     eval ${ext}_inline_deps='"${dep}_inline"'
2322     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2323 done
2324
2325 aligned_stack_if_any="aarch64 ppc x86"
2326 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2327 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2328 fast_unaligned_if_any="aarch64 ppc x86"
2329 simd_align_16_if_any="altivec neon sse"
2330 simd_align_32_if_any="avx"
2331
2332 # system capabilities
2333 symver_if_any="symver_asm_label symver_gnu_asm"
2334 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
2335
2336 # threading support
2337 atomics_gcc_if="sync_val_compare_and_swap"
2338 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2339 atomics_win32_if="MemoryBarrier"
2340 atomics_native_if_any="$ATOMICS_LIST"
2341 w32threads_deps="atomics_native"
2342 threads_if_any="$THREADS_LIST"
2343
2344 # subsystems
2345 dct_select="rdft"
2346 dirac_parse_select="golomb"
2347 error_resilience_select="me_cmp"
2348 faandct_deps="faan fdctdsp"
2349 faanidct_deps="faan idctdsp"
2350 h264dsp_select="startcode"
2351 frame_thread_encoder_deps="encoders threads"
2352 intrax8_select="blockdsp idctdsp"
2353 mdct_select="fft"
2354 mdct15_select="fft"
2355 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2356 mpeg_er_select="error_resilience"
2357 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2358 mpegaudiodsp_select="dct"
2359 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2360 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2361 vc1dsp_select="h264chroma qpeldsp startcode"
2362 rdft_select="fft"
2363
2364 # decoders / encoders
2365 aac_decoder_select="mdct15 mdct sinewin"
2366 aac_fixed_decoder_select="mdct sinewin"
2367 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2368 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2369 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2370 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2371 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2372 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2373 adpcm_g722_decoder_select="g722dsp"
2374 adpcm_g722_encoder_select="g722dsp"
2375 aic_decoder_select="golomb idctdsp"
2376 alac_encoder_select="lpc"
2377 als_decoder_select="bswapdsp"
2378 amrnb_decoder_select="lsp"
2379 amrwb_decoder_select="lsp"
2380 amv_decoder_select="sp5x_decoder exif"
2381 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2382 ape_decoder_select="bswapdsp llauddsp"
2383 apng_decoder_select="zlib"
2384 apng_encoder_select="llvidencdsp zlib"
2385 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2386 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2387 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2388 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2389 atrac1_decoder_select="mdct sinewin"
2390 atrac3_decoder_select="mdct"
2391 atrac3p_decoder_select="mdct sinewin"
2392 avrn_decoder_select="exif jpegtables"
2393 bink_decoder_select="blockdsp hpeldsp"
2394 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2395 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2396 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2397 cllc_decoder_select="bswapdsp"
2398 comfortnoise_encoder_select="lpc"
2399 cook_decoder_select="audiodsp mdct sinewin"
2400 cscd_decoder_select="lzo"
2401 cscd_decoder_suggest="zlib"
2402 dca_decoder_select="mdct"
2403 dds_decoder_select="texturedsp"
2404 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2405 dnxhd_decoder_select="blockdsp idctdsp"
2406 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2407 dvvideo_decoder_select="dvprofile idctdsp"
2408 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2409 dxa_decoder_select="zlib"
2410 dxv_decoder_select="lzf texturedsp"
2411 eac3_decoder_select="ac3_decoder"
2412 eac3_encoder_select="ac3_encoder"
2413 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2414 eatgq_decoder_select="aandcttables"
2415 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2416 exr_decoder_select="zlib"
2417 ffv1_decoder_select="rangecoder"
2418 ffv1_encoder_select="rangecoder"
2419 ffvhuff_decoder_select="huffyuv_decoder"
2420 ffvhuff_encoder_select="huffyuv_encoder"
2421 fic_decoder_select="golomb"
2422 flac_decoder_select="flacdsp"
2423 flac_encoder_select="bswapdsp flacdsp lpc"
2424 flashsv2_decoder_select="zlib"
2425 flashsv2_encoder_select="zlib"
2426 flashsv_decoder_select="zlib"
2427 flashsv_encoder_select="zlib"
2428 flv_decoder_select="h263_decoder"
2429 flv_encoder_select="h263_encoder"
2430 fourxm_decoder_select="blockdsp bswapdsp"
2431 fraps_decoder_select="bswapdsp huffman"
2432 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2433 g729_decoder_select="audiodsp"
2434 h261_decoder_select="mpegvideo"
2435 h261_encoder_select="aandcttables mpegvideoenc"
2436 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2437 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2438 h263i_decoder_select="h263_decoder"
2439 h263p_decoder_select="h263_decoder"
2440 h263p_encoder_select="h263_encoder"
2441 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2442 h264_decoder_suggest="error_resilience"
2443 hap_decoder_select="snappy texturedsp"
2444 hap_encoder_deps="libsnappy"
2445 hap_encoder_select="texturedspenc"
2446 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2447 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2448 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2449 iac_decoder_select="imc_decoder"
2450 imc_decoder_select="bswapdsp fft mdct sinewin"
2451 indeo3_decoder_select="hpeldsp"
2452 indeo4_decoder_select="ividsp"
2453 indeo5_decoder_select="ividsp"
2454 interplay_video_decoder_select="hpeldsp"
2455 jpegls_decoder_select="mjpeg_decoder"
2456 jv_decoder_select="blockdsp"
2457 lagarith_decoder_select="llviddsp"
2458 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2459 magicyuv_decoder_select="llviddsp"
2460 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2461 metasound_decoder_select="lsp mdct sinewin"
2462 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2463 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2464 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2465 mjpegb_decoder_select="mjpeg_decoder"
2466 mlp_decoder_select="mlp_parser"
2467 motionpixels_decoder_select="bswapdsp"
2468 mp1_decoder_select="mpegaudio"
2469 mp1float_decoder_select="mpegaudio"
2470 mp2_decoder_select="mpegaudio"
2471 mp2float_decoder_select="mpegaudio"
2472 mp3_decoder_select="mpegaudio"
2473 mp3adu_decoder_select="mpegaudio"
2474 mp3adufloat_decoder_select="mpegaudio"
2475 mp3float_decoder_select="mpegaudio"
2476 mp3on4_decoder_select="mpegaudio"
2477 mp3on4float_decoder_select="mpegaudio"
2478 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2479 mpc8_decoder_select="mpegaudiodsp"
2480 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2481 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2482 mpegvideo_decoder_select="mpegvideo"
2483 mpeg1video_decoder_select="mpegvideo"
2484 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2485 mpeg2video_decoder_select="mpegvideo"
2486 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2487 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2488 mpeg4_encoder_select="h263_encoder"
2489 msa1_decoder_select="mss34dsp"
2490 msmpeg4v1_decoder_select="h263_decoder"
2491 msmpeg4v2_decoder_select="h263_decoder"
2492 msmpeg4v2_encoder_select="h263_encoder"
2493 msmpeg4v3_decoder_select="h263_decoder"
2494 msmpeg4v3_encoder_select="h263_encoder"
2495 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2496 mts2_decoder_select="mss34dsp"
2497 mxpeg_decoder_select="mjpeg_decoder"
2498 nellymoser_decoder_select="mdct sinewin"
2499 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2500 nuv_decoder_select="idctdsp lzo"
2501 on2avc_decoder_select="mdct"
2502 opus_decoder_deps="swresample"
2503 opus_decoder_select="mdct15"
2504 opus_encoder_select="audio_frame_queue mdct15"
2505 png_decoder_select="zlib"
2506 png_encoder_select="llvidencdsp zlib"
2507 prores_decoder_select="blockdsp idctdsp"
2508 prores_encoder_select="fdctdsp"
2509 qcelp_decoder_select="lsp"
2510 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2511 ra_144_decoder_select="audiodsp"
2512 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2513 ralf_decoder_select="golomb"
2514 rawvideo_decoder_select="bswapdsp"
2515 rscc_decoder_select="zlib"
2516 rtjpeg_decoder_select="me_cmp"
2517 rv10_decoder_select="h263_decoder"
2518 rv10_encoder_select="h263_encoder"
2519 rv20_decoder_select="h263_decoder"
2520 rv20_encoder_select="h263_encoder"
2521 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2522 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2523 screenpresso_decoder_select="zlib"
2524 shorten_decoder_select="bswapdsp"
2525 sipr_decoder_select="lsp"
2526 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2527 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2528 sonic_decoder_select="golomb rangecoder"
2529 sonic_encoder_select="golomb rangecoder"
2530 sonic_ls_encoder_select="golomb rangecoder"
2531 sp5x_decoder_select="mjpeg_decoder"
2532 svq1_decoder_select="hpeldsp"
2533 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2534 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2535 svq3_decoder_suggest="zlib"
2536 tak_decoder_select="audiodsp"
2537 tdsc_decoder_select="zlib mjpeg_decoder"
2538 theora_decoder_select="vp3_decoder"
2539 thp_decoder_select="mjpeg_decoder"
2540 tiff_decoder_suggest="zlib lzma"
2541 tiff_encoder_suggest="zlib"
2542 truehd_decoder_select="mlp_parser"
2543 truemotion2_decoder_select="bswapdsp"
2544 truespeech_decoder_select="bswapdsp"
2545 tscc_decoder_select="zlib"
2546 twinvq_decoder_select="mdct lsp sinewin"
2547 txd_decoder_select="texturedsp"
2548 utvideo_decoder_select="bswapdsp llviddsp"
2549 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2550 vble_decoder_select="llviddsp"
2551 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2552 vc1_qsv_decoder_deps="libmfx"
2553 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2554 vc1image_decoder_select="vc1_decoder"
2555 vorbis_decoder_select="mdct"
2556 vorbis_encoder_select="mdct"
2557 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2558 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2559 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2560 vp6a_decoder_select="vp6_decoder"
2561 vp6f_decoder_select="vp6_decoder"
2562 vp7_decoder_select="h264pred videodsp vp8dsp"
2563 vp8_decoder_select="h264pred videodsp vp8dsp"
2564 vp9_decoder_select="videodsp vp9_parser"
2565 webp_decoder_select="vp8_decoder exif"
2566 wmalossless_decoder_select="llauddsp"
2567 wmapro_decoder_select="mdct sinewin wma_freqs"
2568 wmav1_decoder_select="mdct sinewin wma_freqs"
2569 wmav1_encoder_select="mdct sinewin wma_freqs"
2570 wmav2_decoder_select="mdct sinewin wma_freqs"
2571 wmav2_encoder_select="mdct sinewin wma_freqs"
2572 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2573 wmv1_decoder_select="h263_decoder"
2574 wmv1_encoder_select="h263_encoder"
2575 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2576 wmv2_encoder_select="h263_encoder wmv2dsp"
2577 wmv3_decoder_select="vc1_decoder"
2578 wmv3image_decoder_select="wmv3_decoder"
2579 xma1_decoder_select="wmapro_decoder"
2580 xma2_decoder_select="wmapro_decoder"
2581 zerocodec_decoder_select="zlib"
2582 zlib_decoder_select="zlib"
2583 zlib_encoder_select="zlib"
2584 zmbv_decoder_select="zlib"
2585 zmbv_encoder_select="zlib"
2586
2587 # platform codecs
2588 audiotoolbox_deps="AudioToolbox_AudioToolbox_h"
2589 audiotoolbox_extralibs="-framework CoreFoundation -framework AudioToolbox -framework CoreMedia"
2590
2591 # hardware accelerators
2592 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2593 cuda_deps_any="dlopen LoadLibrary"
2594 cuvid_deps="cuda"
2595 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2596 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2597 dxva2_extralibs="-luser32"
2598 vaapi_deps="va_va_h"
2599 vda_framework_deps="VideoDecodeAcceleration_VDADecoder_h"
2600 vda_framework_extralibs="-framework VideoDecodeAcceleration"
2601 vda_deps="vda_framework pthreads"
2602 vda_extralibs="-framework CoreFoundation -framework QuartzCore"
2603 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2604 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2605 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2606 xvmc_deps="X11_extensions_XvMClib_h"
2607
2608 h263_vaapi_hwaccel_deps="vaapi"
2609 h263_vaapi_hwaccel_select="h263_decoder"
2610 h263_videotoolbox_hwaccel_deps="videotoolbox"
2611 h263_videotoolbox_hwaccel_select="h263_decoder"
2612 h264_cuvid_hwaccel_deps="cuda cuvid"
2613 h264_cuvid_hwaccel_select="h264_cuvid_decoder"
2614 h264_d3d11va_hwaccel_deps="d3d11va"
2615 h264_d3d11va_hwaccel_select="h264_decoder"
2616 h264_dxva2_hwaccel_deps="dxva2"
2617 h264_dxva2_hwaccel_select="h264_decoder"
2618 h264_mediacodec_hwaccel_deps="mediacodec"
2619 h264_mmal_hwaccel_deps="mmal"
2620 h264_qsv_hwaccel_deps="libmfx"
2621 h264_vaapi_hwaccel_deps="vaapi"
2622 h264_vaapi_hwaccel_select="h264_decoder"
2623 h264_vda_hwaccel_deps="vda"
2624 h264_vda_hwaccel_select="h264_decoder"
2625 h264_vda_old_hwaccel_deps="vda"
2626 h264_vda_old_hwaccel_select="h264_decoder"
2627 h264_vdpau_hwaccel_deps="vdpau"
2628 h264_vdpau_hwaccel_select="h264_decoder"
2629 h264_videotoolbox_hwaccel_deps="videotoolbox"
2630 h264_videotoolbox_hwaccel_select="h264_decoder"
2631 hevc_cuvid_hwaccel_deps="cuda cuvid"
2632 hevc_cuvid_hwaccel_select="hevc_cuvid_decoder"
2633 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2634 hevc_d3d11va_hwaccel_select="hevc_decoder"
2635 hevc_mediacodec_hwaccel_deps="mediacodec"
2636 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2637 hevc_dxva2_hwaccel_select="hevc_decoder"
2638 hevc_qsv_hwaccel_deps="libmfx"
2639 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2640 hevc_vaapi_hwaccel_select="hevc_decoder"
2641 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2642 hevc_vdpau_hwaccel_select="hevc_decoder"
2643 mjpeg_cuvid_hwaccel_deps="cuda cuvid"
2644 mjpeg_cuvid_hwaccel_select="mjpeg_cuvid_decoder"
2645 mpeg_xvmc_hwaccel_deps="xvmc"
2646 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2647 mpeg1_cuvid_hwaccel_deps="cuda cuvid"
2648 mpeg1_cuvid_hwaccel_select="mpeg1_cuvid_decoder"
2649 mpeg1_vdpau_hwaccel_deps="vdpau"
2650 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2651 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2652 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2653 mpeg1_xvmc_hwaccel_deps="xvmc"
2654 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2655 mpeg2_cuvid_hwaccel_deps="cuda cuvid"
2656 mpeg2_cuvid_hwaccel_select="mpeg2_cuvid_decoder"
2657 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2658 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2659 mpeg2_dxva2_hwaccel_deps="dxva2"
2660 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2661 mpeg2_mmal_hwaccel_deps="mmal"
2662 mpeg2_qsv_hwaccel_deps="libmfx"
2663 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2664 mpeg2_vaapi_hwaccel_deps="vaapi"
2665 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2666 mpeg2_vdpau_hwaccel_deps="vdpau"
2667 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2668 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2669 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2670 mpeg2_xvmc_hwaccel_deps="xvmc"
2671 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2672 mpeg4_cuvid_hwaccel_deps="cuda cuvid"
2673 mpeg4_cuvid_hwaccel_select="mpeg4_cuvid_decoder"
2674 mpeg4_mediacodec_hwaccel_deps="mediacodec"
2675 mpeg4_mmal_hwaccel_deps="mmal"
2676 mpeg4_vaapi_hwaccel_deps="vaapi"
2677 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2678 mpeg4_vdpau_hwaccel_deps="vdpau"
2679 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2680 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2681 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2682 vc1_cuvid_hwaccel_deps="cuda cuvid"
2683 vc1_cuvid_hwaccel_select="vc1_cuvid_decoder"
2684 vc1_d3d11va_hwaccel_deps="d3d11va"
2685 vc1_d3d11va_hwaccel_select="vc1_decoder"
2686 vc1_dxva2_hwaccel_deps="dxva2"
2687 vc1_dxva2_hwaccel_select="vc1_decoder"
2688 vc1_mmal_hwaccel_deps="mmal"
2689 vc1_qsv_hwaccel_deps="libmfx"
2690 vc1_qsv_hwaccel_select="qsvdec_vc1"
2691 vc1_vaapi_hwaccel_deps="vaapi"
2692 vc1_vaapi_hwaccel_select="vc1_decoder"
2693 vc1_vdpau_hwaccel_deps="vdpau"
2694 vc1_vdpau_hwaccel_select="vc1_decoder"
2695 vp8_cuvid_hwaccel_deps="cuda cuvid"
2696 vp8_cuvid_hwaccel_select="vp8_cuvid_decoder"
2697 vp9_cuvid_hwaccel_deps="cuda cuvid"
2698 vp9_cuvid_hwaccel_select="vp9_cuvid_decoder"
2699 vp8_mediacodec_hwaccel_deps="mediacodec"
2700 vp8_qsv_hwaccel_deps="libmfx"
2701 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2702 vp9_d3d11va_hwaccel_select="vp9_decoder"
2703 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2704 vp9_dxva2_hwaccel_select="vp9_decoder"
2705 vp9_mediacodec_hwaccel_deps="mediacodec"
2706 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2707 vp9_vaapi_hwaccel_select="vp9_decoder"
2708 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2709 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2710 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2711 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2712
2713 # hardware-accelerated codecs
2714 omx_deps="dlopen pthreads"
2715 omx_extralibs='$ldl'
2716 omx_rpi_select="omx"
2717 qsvdec_select="qsv"
2718 qsvenc_select="qsv"
2719 vaapi_encode_deps="vaapi"
2720
2721 hwupload_cuda_filter_deps="cuda"
2722 scale_npp_filter_deps="cuda libnpp"
2723
2724 nvenc_deps="cuda"
2725 nvenc_deps_any="dlopen LoadLibrary"
2726 nvenc_encoder_deps="nvenc"
2727
2728 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2729 h264_cuvid_decoder_deps="cuda cuvid"
2730 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2731 h264_mediacodec_decoder_deps="mediacodec"
2732 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2733 h264_mmal_decoder_deps="mmal"
2734 h264_nvenc_encoder_deps="nvenc"
2735 h264_omx_encoder_deps="omx"
2736 h264_qsv_decoder_deps="libmfx"
2737 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2738 h264_qsv_encoder_deps="libmfx"
2739 h264_qsv_encoder_select="qsvenc"
2740 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2741 h264_vaapi_encoder_select="vaapi_encode golomb"
2742 h264_vda_decoder_deps="vda"
2743 h264_vda_decoder_select="h264_decoder"
2744 h264_vdpau_decoder_deps="vdpau"
2745 h264_vdpau_decoder_select="h264_decoder"
2746 hevc_cuvid_decoder_deps="cuda cuvid"
2747 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2748 hevc_mediacodec_decoder_deps="mediacodec"
2749 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2750 hevc_nvenc_encoder_deps="nvenc"
2751 hevc_qsv_decoder_deps="libmfx"
2752 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2753 hevc_qsv_encoder_deps="libmfx"
2754 hevc_qsv_encoder_select="hevcparse qsvenc"
2755 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2756 hevc_vaapi_encoder_select="vaapi_encode golomb"
2757 mjpeg_cuvid_decoder_deps="cuda cuvid"
2758 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2759 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2760 mpeg1_cuvid_decoder_deps="cuda cuvid"
2761 mpeg1_vdpau_decoder_deps="vdpau"
2762 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2763 mpeg2_crystalhd_decoder_select="crystalhd"
2764 mpeg2_cuvid_decoder_deps="cuda cuvid"
2765 mpeg2_mmal_decoder_deps="mmal"
2766 mpeg2_qsv_decoder_deps="libmfx"
2767 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2768 mpeg2_qsv_encoder_deps="libmfx"
2769 mpeg2_qsv_encoder_select="qsvenc"
2770 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2771 mpeg2_vaapi_encoder_select="vaapi_encode"
2772 mpeg4_crystalhd_decoder_select="crystalhd"
2773 mpeg4_cuvid_decoder_deps="cuda cuvid"
2774 mpeg4_mediacodec_decoder_deps="mediacodec"
2775 mpeg4_mmal_decoder_deps="mmal"
2776 mpeg4_omx_encoder_deps="omx"
2777 mpeg4_vdpau_decoder_deps="vdpau"
2778 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2779 mpeg_vdpau_decoder_deps="vdpau"
2780 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2781 msmpeg4_crystalhd_decoder_select="crystalhd"
2782 nvenc_h264_encoder_select="h264_nvenc_encoder"
2783 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2784 vc1_crystalhd_decoder_select="crystalhd"
2785 vc1_cuvid_decoder_deps="cuda cuvid"
2786 vc1_mmal_decoder_deps="mmal"
2787 vc1_vdpau_decoder_deps="vdpau"
2788 vc1_vdpau_decoder_select="vc1_decoder"
2789 vp8_cuvid_decoder_deps="cuda cuvid"
2790 vp8_mediacodec_decoder_deps="mediacodec"
2791 vp8_qsv_decoder_deps="libmfx"
2792 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2793 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2794 vp8_vaapi_encoder_select="vaapi_encode"
2795 vp9_cuvid_decoder_deps="cuda cuvid"
2796 vp9_mediacodec_decoder_deps="mediacodec"
2797 wmv3_crystalhd_decoder_select="crystalhd"
2798 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2799
2800 # parsers
2801 h264_parser_select="golomb h264dsp h264parse"
2802 hevc_parser_select="golomb hevcparse"
2803 mpegaudio_parser_select="mpegaudioheader"
2804 mpegvideo_parser_select="mpegvideo"
2805 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2806 vc1_parser_select="vc1dsp"
2807
2808 # bitstream_filters
2809 mjpeg2jpeg_bsf_select="jpegtables"
2810
2811 # external libraries
2812 aac_at_decoder_deps="audiotoolbox"
2813 ac3_at_decoder_deps="audiotoolbox"
2814 ac3_at_decoder_select="ac3_parser"
2815 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2816 alac_at_decoder_deps="audiotoolbox"
2817 amr_nb_at_decoder_deps="audiotoolbox"
2818 avisynth_deps_any="dlopen LoadLibrary"
2819 avisynth_demuxer_deps="avisynth"
2820 avisynth_demuxer_select="riffdec"
2821 eac3_at_decoder_deps="audiotoolbox"
2822 eac3_at_decoder_select="ac3_parser"
2823 gsm_ms_at_decoder_deps="audiotoolbox"
2824 ilbc_at_decoder_deps="audiotoolbox"
2825 mp1_at_decoder_deps="audiotoolbox"
2826 mp2_at_decoder_deps="audiotoolbox"
2827 mp3_at_decoder_deps="audiotoolbox"
2828 mp1_at_decoder_select="mpegaudioheader"
2829 mp2_at_decoder_select="mpegaudioheader"
2830 mp3_at_decoder_select="mpegaudioheader"
2831 pcm_alaw_at_decoder_deps="audiotoolbox"
2832 pcm_mulaw_at_decoder_deps="audiotoolbox"
2833 qdmc_at_decoder_deps="audiotoolbox"
2834 qdm2_at_decoder_deps="audiotoolbox"
2835 aac_at_encoder_deps="audiotoolbox"
2836 aac_at_encoder_select="audio_frame_queue"
2837 alac_at_encoder_deps="audiotoolbox"
2838 alac_at_encoder_select="audio_frame_queue"
2839 ilbc_at_encoder_deps="audiotoolbox"
2840 ilbc_at_encoder_select="audio_frame_queue"
2841 pcm_alaw_at_encoder_deps="audiotoolbox"
2842 pcm_alaw_at_encoder_select="audio_frame_queue"
2843 pcm_mulaw_at_encoder_deps="audiotoolbox"
2844 pcm_mulaw_at_encoder_select="audio_frame_queue"
2845 chromaprint_muxer_deps="chromaprint"
2846 h264_videotoolbox_encoder_deps="videotoolbox_encoder pthreads"
2847 libcelt_decoder_deps="libcelt"
2848 libfdk_aac_decoder_deps="libfdk_aac"
2849 libfdk_aac_encoder_deps="libfdk_aac"
2850 libfdk_aac_encoder_select="audio_frame_queue"
2851 libgme_demuxer_deps="libgme"
2852 libgsm_decoder_deps="libgsm"
2853 libgsm_encoder_deps="libgsm"
2854 libgsm_ms_decoder_deps="libgsm"
2855 libgsm_ms_encoder_deps="libgsm"
2856 libilbc_decoder_deps="libilbc"
2857 libilbc_encoder_deps="libilbc"
2858 libkvazaar_encoder_deps="libkvazaar"
2859 libmodplug_demuxer_deps="libmodplug"
2860 libmp3lame_encoder_deps="libmp3lame"
2861 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2862 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2863 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2864 libopencore_amrnb_encoder_select="audio_frame_queue"
2865 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2866 libopenh264_decoder_deps="libopenh264"
2867 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2868 libopenh264_encoder_deps="libopenh264"
2869 libopenjpeg_decoder_deps="libopenjpeg"
2870 libopenjpeg_encoder_deps="libopenjpeg"
2871 libopenmpt_demuxer_deps="libopenmpt"
2872 libopus_decoder_deps="libopus"
2873 libopus_encoder_deps="libopus"
2874 libopus_encoder_select="audio_frame_queue"
2875 libschroedinger_decoder_deps="libschroedinger"
2876 libschroedinger_encoder_deps="libschroedinger"
2877 libshine_encoder_deps="libshine"
2878 libshine_encoder_select="audio_frame_queue"
2879 libspeex_decoder_deps="libspeex"
2880 libspeex_encoder_deps="libspeex"
2881 libspeex_encoder_select="audio_frame_queue"
2882 libtheora_encoder_deps="libtheora"
2883 libtwolame_encoder_deps="libtwolame"
2884 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2885 libvorbis_decoder_deps="libvorbis"
2886 libvorbis_encoder_deps="libvorbis"
2887 libvorbis_encoder_select="audio_frame_queue"
2888 libvpx_vp8_decoder_deps="libvpx"
2889 libvpx_vp8_encoder_deps="libvpx"
2890 libvpx_vp9_decoder_deps="libvpx"
2891 libvpx_vp9_encoder_deps="libvpx"
2892 libwavpack_encoder_deps="libwavpack"
2893 libwavpack_encoder_select="audio_frame_queue"
2894 libwebp_encoder_deps="libwebp"
2895 libwebp_anim_encoder_deps="libwebp"
2896 libx262_encoder_deps="libx262"
2897 libx264_encoder_deps="libx264"
2898 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2899 libx264rgb_encoder_select="libx264_encoder"
2900 libx265_encoder_deps="libx265"
2901 libxavs_encoder_deps="libxavs"
2902 libxvid_encoder_deps="libxvid"
2903 libzvbi_teletext_decoder_deps="libzvbi"
2904 videotoolbox_deps="VideoToolbox_VideoToolbox_h"
2905 videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework CoreVideo"
2906 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2907 videotoolbox_encoder_suggest="vda_framework vt_bt2020"
2908 vt_bt2020_deps="kCVImageBufferColorPrimaries_ITU_R_2020"
2909
2910 # demuxers / muxers
2911 ac3_demuxer_select="ac3_parser"
2912 aiff_muxer_select="iso_media"
2913 asf_demuxer_select="riffdec"
2914 asf_o_demuxer_select="riffdec"
2915 asf_muxer_select="riffenc"
2916 asf_stream_muxer_select="asf_muxer"
2917 avi_demuxer_select="iso_media riffdec exif"
2918 avi_muxer_select="riffenc"
2919 caf_demuxer_select="iso_media riffdec"
2920 caf_muxer_select="iso_media"
2921 dash_muxer_select="mp4_muxer"
2922 dirac_demuxer_select="dirac_parser"
2923 dts_demuxer_select="dca_parser"
2924 dtshd_demuxer_select="dca_parser"
2925 dv_demuxer_select="dvprofile"
2926 dv_muxer_select="dvprofile"
2927 dxa_demuxer_select="riffdec"
2928 eac3_demuxer_select="ac3_parser"
2929 f4v_muxer_select="mov_muxer"
2930 fifo_muxer_deps="threads"
2931 flac_demuxer_select="flac_parser"
2932 hds_muxer_select="flv_muxer"
2933 hls_muxer_select="mpegts_muxer"
2934 image2_alias_pix_demuxer_select="image2_demuxer"
2935 image2_brender_pix_demuxer_select="image2_demuxer"
2936 ipod_muxer_select="mov_muxer"
2937 ismv_muxer_select="mov_muxer"
2938 libnut_demuxer_deps="libnut"
2939 libnut_muxer_deps="libnut"
2940 matroska_audio_muxer_select="matroska_muxer"
2941 matroska_demuxer_select="iso_media riffdec"
2942 matroska_demuxer_suggest="bzlib lzo zlib"
2943 matroska_muxer_select="iso_media riffenc"
2944 mmf_muxer_select="riffenc"
2945 mov_demuxer_select="iso_media riffdec"
2946 mov_demuxer_suggest="zlib"
2947 mov_muxer_select="iso_media riffenc rtpenc_chain"
2948 mp3_demuxer_select="mpegaudio_parser"
2949 mp3_muxer_select="mpegaudioheader"
2950 mp4_muxer_select="mov_muxer"
2951 mpegts_demuxer_select="iso_media"
2952 mpegts_muxer_select="adts_muxer latm_muxer"
2953 mpegtsraw_demuxer_select="mpegts_demuxer"
2954 mxf_d10_muxer_select="mxf_muxer"
2955 mxf_opatom_muxer_select="mxf_muxer"
2956 nut_muxer_select="riffenc"
2957 nuv_demuxer_select="riffdec"
2958 oga_muxer_select="ogg_muxer"
2959 ogg_demuxer_select="dirac_parse"
2960 ogv_muxer_select="ogg_muxer"
2961 opus_muxer_select="ogg_muxer"
2962 psp_muxer_select="mov_muxer"
2963 rtp_demuxer_select="sdp_demuxer"
2964 rtp_muxer_select="golomb"
2965 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2966 rtsp_demuxer_select="http_protocol rtpdec"
2967 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2968 sap_demuxer_select="sdp_demuxer"
2969 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2970 sdp_demuxer_select="rtpdec"
2971 smoothstreaming_muxer_select="ismv_muxer"
2972 spdif_muxer_select="aac_parser"
2973 spx_muxer_select="ogg_muxer"
2974 swf_demuxer_suggest="zlib"
2975 tak_demuxer_select="tak_parser"
2976 tg2_muxer_select="mov_muxer"
2977 tgp_muxer_select="mov_muxer"
2978 vobsub_demuxer_select="mpegps_demuxer"
2979 w64_demuxer_select="wav_demuxer"
2980 w64_muxer_select="wav_muxer"
2981 wav_demuxer_select="riffdec"
2982 wav_muxer_select="riffenc"
2983 webm_muxer_select="iso_media riffenc"
2984 webm_dash_manifest_demuxer_select="matroska_demuxer"
2985 wtv_demuxer_select="mpegts_demuxer riffdec"
2986 wtv_muxer_select="mpegts_muxer riffenc"
2987 xmv_demuxer_select="riffdec"
2988 xwma_demuxer_select="riffdec"
2989
2990 # indevs / outdevs
2991 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2992 alsa_outdev_deps="alsa_asoundlib_h"
2993 avfoundation_indev_deps="pthreads"
2994 avfoundation_indev_extralibs="-framework Foundation -framework AVFoundation -framework CoreVideo -framework CoreMedia"
2995 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2996 caca_outdev_deps="libcaca"
2997 decklink_indev_deps="decklink pthreads"
2998 decklink_indev_extralibs="-lstdc++"
2999 decklink_outdev_deps="decklink pthreads"
3000 decklink_outdev_extralibs="-lstdc++"
3001 dshow_indev_deps="IBaseFilter"
3002 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3003 dv1394_indev_deps="dv1394"
3004 dv1394_indev_select="dv_demuxer"
3005 fbdev_indev_deps="linux_fb_h"
3006 fbdev_outdev_deps="linux_fb_h"
3007 gdigrab_indev_deps="CreateDIBSection"
3008 gdigrab_indev_extralibs="-lgdi32"
3009 gdigrab_indev_select="bmp_decoder"
3010 iec61883_indev_deps="libiec61883"
3011 jack_indev_deps="jack_jack_h"
3012 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3013 lavfi_indev_deps="avfilter"
3014 libcdio_indev_deps="libcdio"
3015 libdc1394_indev_deps="libdc1394"
3016 libv4l2_indev_deps="libv4l2"
3017 openal_indev_deps="openal"
3018 opengl_outdev_deps="opengl"
3019 oss_indev_deps_any="soundcard_h sys_soundcard_h"
3020 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
3021 pulse_indev_deps="libpulse"
3022 pulse_outdev_deps="libpulse"
3023 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
3024 qtkit_indev_select="qtkit"
3025 sdl2_outdev_deps="sdl2"
3026 sndio_indev_deps="sndio_h"
3027 sndio_outdev_deps="sndio_h"
3028 v4l_indev_deps="linux_videodev_h"
3029 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3030 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3031 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
3032 vfwcap_indev_extralibs="-lavicap32"
3033 xcbgrab_indev_deps="libxcb"
3034 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3035 xv_outdev_extralibs="-lXv -lX11 -lXext"
3036
3037 # protocols
3038 async_protocol_deps="threads"
3039 bluray_protocol_deps="libbluray"
3040 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
3041 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3042 ffrtmpcrypt_protocol_select="tcp_protocol"
3043 ffrtmphttp_protocol_deps="!librtmp_protocol"
3044 ffrtmphttp_protocol_select="http_protocol"
3045 ftp_protocol_select="tcp_protocol"
3046 gopher_protocol_select="network"
3047 http_protocol_select="tcp_protocol"
3048 httpproxy_protocol_select="tcp_protocol"
3049 https_protocol_select="tls_protocol"
3050 icecast_protocol_select="http_protocol"
3051 librtmp_protocol_deps="librtmp"
3052 librtmpe_protocol_deps="librtmp"
3053 librtmps_protocol_deps="librtmp"
3054 librtmpt_protocol_deps="librtmp"
3055 librtmpte_protocol_deps="librtmp"
3056 libsmbclient_protocol_deps="libsmbclient gplv3"
3057 libssh_protocol_deps="libssh"
3058 mmsh_protocol_select="http_protocol"
3059 mmst_protocol_select="network"
3060 rtmp_protocol_deps="!librtmp_protocol"
3061 rtmp_protocol_select="tcp_protocol"
3062 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3063 rtmps_protocol_deps="!librtmp_protocol"
3064 rtmps_protocol_select="tls_protocol"
3065 rtmpt_protocol_select="ffrtmphttp_protocol"
3066 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3067 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3068 rtp_protocol_select="udp_protocol"
3069 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3070 sctp_protocol_select="network"
3071 srtp_protocol_select="rtp_protocol srtp"
3072 tcp_protocol_select="network"
3073 tls_gnutls_protocol_deps="gnutls !tls_schannel_protocol !tls_securetransport_protocol"
3074 tls_gnutls_protocol_select="tcp_protocol"
3075 tls_openssl_protocol_deps="openssl !tls_schannel_protocol !tls_securetransport_protocol !tls_gnutls_protocol"
3076 tls_openssl_protocol_select="tcp_protocol"
3077 tls_schannel_protocol_deps="schannel"
3078 tls_schannel_protocol_select="tcp_protocol"
3079 tls_securetransport_protocol_deps="securetransport"
3080 tls_securetransport_protocol_select="tcp_protocol"
3081 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
3082 udp_protocol_select="network"
3083 udplite_protocol_select="network"
3084 unix_protocol_deps="sys_un_h"
3085 unix_protocol_select="network"
3086
3087 # filters
3088 afftfilt_filter_deps="avcodec"
3089 afftfilt_filter_select="fft"
3090 amovie_filter_deps="avcodec avformat"
3091 aresample_filter_deps="swresample"
3092 ass_filter_deps="libass"
3093 atempo_filter_deps="avcodec"
3094 atempo_filter_select="rdft"
3095 azmq_filter_deps="libzmq"
3096 blackframe_filter_deps="gpl"
3097 boxblur_filter_deps="gpl"
3098 bs2b_filter_deps="libbs2b"
3099 colormatrix_filter_deps="gpl"
3100 cover_rect_filter_deps="avcodec avformat gpl"
3101 cropdetect_filter_deps="gpl"
3102 deinterlace_qsv_filter_deps="libmfx"
3103 deinterlace_vaapi_filter_deps="vaapi"
3104 delogo_filter_deps="gpl"
3105 deshake_filter_select="pixelutils"
3106 drawtext_filter_deps="libfreetype"
3107 eq_filter_deps="gpl"
3108 fftfilt_filter_deps="avcodec"
3109 fftfilt_filter_select="rdft"
3110 find_rect_filter_deps="avcodec avformat gpl"
3111 firequalizer_filter_deps="avcodec"
3112 firequalizer_filter_select="rdft"
3113 flite_filter_deps="libflite"
3114 framerate_filter_select="pixelutils"
3115 frei0r_filter_deps="frei0r dlopen"
3116 frei0r_src_filter_deps="frei0r dlopen"
3117 fspp_filter_deps="gpl"
3118 geq_filter_deps="gpl"
3119 histeq_filter_deps="gpl"
3120 hqdn3d_filter_deps="gpl"
3121 interlace_filter_deps="gpl"
3122 kerndeint_filter_deps="gpl"
3123 ladspa_filter_deps="ladspa dlopen"
3124 mcdeint_filter_deps="avcodec gpl"
3125 movie_filter_deps="avcodec avformat"
3126 mpdecimate_filter_deps="gpl"
3127 mpdecimate_filter_select="pixelutils"
3128 mptestsrc_filter_deps="gpl"
3129 negate_filter_deps="lut_filter"
3130 nnedi_filter_deps="gpl"
3131 ocr_filter_deps="libtesseract"
3132 ocv_filter_deps="libopencv"
3133 owdenoise_filter_deps="gpl"
3134 pan_filter_deps="swresample"
3135 perspective_filter_deps="gpl"
3136 phase_filter_deps="gpl"
3137 pp7_filter_deps="gpl"
3138 pp_filter_deps="gpl postproc"
3139 pullup_filter_deps="gpl"
3140 removelogo_filter_deps="avcodec avformat swscale"
3141 repeatfields_filter_deps="gpl"
3142 resample_filter_deps="avresample"
3143 rubberband_filter_deps="librubberband"
3144 sab_filter_deps="gpl swscale"
3145 scale2ref_filter_deps="swscale"
3146 scale_filter_deps="swscale"
3147 scale_qsv_filter_deps="libmfx"
3148 select_filter_select="pixelutils"
3149 showcqt_filter_deps="avcodec avformat swscale"
3150 showcqt_filter_select="fft"
3151 showfreqs_filter_deps="avcodec"
3152 showfreqs_filter_select="fft"
3153 showspectrum_filter_deps="avcodec"
3154 showspectrum_filter_select="fft"
3155 showspectrumpic_filter_deps="avcodec"
3156 showspectrumpic_filter_select="fft"
3157 signature_filter_deps="gpl avcodec avformat"
3158 smartblur_filter_deps="gpl swscale"
3159 sofalizer_filter_deps="netcdf avcodec"
3160 sofalizer_filter_select="fft"
3161 spectrumsynth_filter_deps="avcodec"
3162 spectrumsynth_filter_select="fft"
3163 spp_filter_deps="gpl avcodec"
3164 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3165 stereo3d_filter_deps="gpl"
3166 subtitles_filter_deps="avformat avcodec libass"
3167 super2xsai_filter_deps="gpl"
3168 pixfmts_super2xsai_test_deps="super2xsai_filter"
3169 tinterlace_filter_deps="gpl"
3170 tinterlace_merge_test_deps="tinterlace_filter"
3171 tinterlace_pad_test_deps="tinterlace_filter"
3172 uspp_filter_deps="gpl avcodec"
3173 vaguedenoiser_filter_deps="gpl"
3174 vidstabdetect_filter_deps="libvidstab"
3175 vidstabtransform_filter_deps="libvidstab"
3176 zmq_filter_deps="libzmq"
3177 zoompan_filter_deps="swscale"
3178 zscale_filter_deps="libzimg"
3179 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3180
3181 # examples
3182 avio_dir_cmd_deps="avformat avutil"
3183 avio_reading_deps="avformat avcodec avutil"
3184 decode_audio_example_deps="avcodec avutil"
3185 decode_video_example_deps="avcodec avutil"
3186 demuxing_decoding_example_deps="avcodec avformat avutil"
3187 encode_audio_example_deps="avcodec avutil"
3188 encode_video_example_deps="avcodec avutil"
3189 extract_mvs_example_deps="avcodec avformat avutil"
3190 filter_audio_example_deps="avfilter avutil"
3191 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3192 filtering_video_example_deps="avfilter avcodec avformat avutil"
3193 http_multiclient_example_deps="avformat avutil fork"
3194 metadata_example_deps="avformat avutil"
3195 muxing_example_deps="avcodec avformat avutil swscale"
3196 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3197 remuxing_example_deps="avcodec avformat avutil"
3198 resampling_audio_example_deps="avutil swresample"
3199 scaling_video_example_deps="avutil swscale"
3200 transcode_aac_example_deps="avcodec avformat swresample"
3201 transcoding_example_deps="avfilter avcodec avformat avutil"
3202
3203 # libraries, in linking order
3204 avcodec_deps="avutil"
3205 avdevice_deps="avformat avcodec avutil"
3206 avfilter_deps="avutil"
3207 avformat_deps="avcodec avutil"
3208 avresample_deps="avutil"
3209 postproc_deps="avutil gpl"
3210 swresample_deps="avutil"
3211 swscale_deps="avutil"
3212
3213 # programs
3214 ffmpeg_deps="avcodec avfilter avformat swresample"
3215 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3216                null_filter
3217                trim_filter"
3218 ffplay_deps="avcodec avformat swscale swresample sdl2"
3219 ffplay_libs='$sdl2_libs'
3220 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3221 ffprobe_deps="avcodec avformat"
3222 ffserver_deps="avformat fork sarestart"
3223 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3224
3225 # documentation
3226 podpages_deps="perl"
3227 manpages_deps="perl pod2man"
3228 htmlpages_deps="perl"
3229 htmlpages_deps_any="makeinfo_html texi2html"
3230 txtpages_deps="perl makeinfo"
3231 doc_deps_any="manpages htmlpages podpages txtpages"
3232
3233 # default parameters
3234
3235 logfile="config.log"
3236
3237 # installation paths
3238 prefix_default="/usr/local"
3239 bindir_default='${prefix}/bin'
3240 datadir_default='${prefix}/share/ffmpeg'
3241 docdir_default='${prefix}/share/doc/ffmpeg'
3242 incdir_default='${prefix}/include'
3243 libdir_default='${prefix}/lib'
3244 mandir_default='${prefix}/share/man'
3245
3246 # toolchain
3247 ar_default="ar"
3248 cc_default="gcc"
3249 cxx_default="g++"
3250 host_cc_default="gcc"
3251 doxygen_default="doxygen"
3252 install="install"
3253 ln_s_default="ln -s -f"
3254 nm_default="nm -g"
3255 objformat="elf"
3256 pkg_config_default=pkg-config
3257 ranlib_default="ranlib"
3258 strip_default="strip"
3259 version_script='--version-script'
3260 yasmexe_default="yasm"
3261 windres_default="windres"
3262
3263 # OS
3264 target_os_default=$(tolower $(uname -s))
3265 host_os=$target_os_default
3266
3267 # machine
3268 if test "$target_os_default" = aix; then
3269     arch_default=$(uname -p)
3270     strip_default="strip -X32_64"
3271 else
3272     arch_default=$(uname -m)
3273 fi
3274 cpu="generic"
3275 intrinsics="none"
3276
3277 # configurable options
3278 enable $PROGRAM_LIST
3279 enable $DOCUMENT_LIST
3280 enable $EXAMPLE_LIST
3281 enable $(filter_out avresample $LIBRARY_LIST)
3282 enable stripping
3283
3284 enable asm
3285 enable debug
3286 enable doc
3287 enable faan faandct faanidct
3288 enable optimizations
3289 enable runtime_cpudetect
3290 enable safe_bitstream_reader
3291 enable static
3292 enable swscale_alpha
3293 enable valgrind_backtrace
3294
3295 sws_max_filter_size_default=256
3296 set_default sws_max_filter_size
3297
3298 # build settings
3299 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3300 LIBPREF="lib"
3301 LIBSUF=".a"
3302 FULLNAME='$(NAME)$(BUILDSUF)'
3303 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3304 SLIBPREF="lib"
3305 SLIBSUF=".so"
3306 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3307 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3308 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3309 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3310 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3311 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3312 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3313
3314 asflags_filter=echo
3315 cflags_filter=echo
3316 ldflags_filter=echo
3317
3318 AS_C='-c'
3319 AS_O='-o $@'
3320 CC_C='-c'
3321 CC_E='-E -o $@'
3322 CC_O='-o $@'
3323 CXX_C='-c'
3324 CXX_O='-o $@'
3325 OBJCC_C='-c'
3326 OBJCC_E='-E -o $@'
3327 OBJCC_O='-o $@'
3328 LD_O='-o $@'
3329 LD_LIB='-l%'
3330 LD_PATH='-L'
3331 HOSTCC_C='-c'
3332 HOSTCC_E='-E -o $@'
3333 HOSTCC_O='-o $@'
3334 HOSTLD_O='-o $@'
3335
3336 host_libs='-lm'
3337 host_cflags_filter=echo
3338 host_ldflags_filter=echo
3339
3340 target_path='$(CURDIR)'
3341
3342 # since the object filename is not given with the -MM flag, the compiler
3343 # is only able to print the basename, and we must add the path ourselves
3344 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3345 DEPFLAGS='-MM'
3346
3347 # find source path
3348 if test -f configure; then
3349     source_path=.
3350 else
3351     source_path=$(cd $(dirname "$0"); pwd)
3352     case "$source_path" in
3353         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3354     esac
3355     test -e "$source_path/config.h" &&
3356         die "Out of tree builds are impossible with config.h in source dir."
3357 fi
3358
3359 for v in "$@"; do
3360     r=${v#*=}
3361     l=${v%"$r"}
3362     r=$(sh_quote "$r")
3363     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3364 done
3365
3366 find_things(){
3367     thing=$1
3368     pattern=$2
3369     file=$source_path/$3
3370     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3371 }
3372
3373 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3374 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3375 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3376 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3377 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3378 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3379 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3380 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3381 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3382
3383 find_things_extern(){
3384     thing=$1
3385     pattern=$2
3386     file=$source_path/$3
3387     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3388 }
3389
3390 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3391 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3392
3393 ALL_COMPONENTS="
3394     $BSF_LIST
3395     $DECODER_LIST
3396     $DEMUXER_LIST
3397     $ENCODER_LIST
3398     $FILTER_LIST
3399     $HWACCEL_LIST
3400     $INDEV_LIST
3401     $MUXER_LIST
3402     $OUTDEV_LIST
3403     $PARSER_LIST
3404     $PROTOCOL_LIST
3405 "
3406
3407 for n in $COMPONENT_LIST; do
3408     v=$(toupper ${n%s})_LIST
3409     eval enable \$$v
3410     eval ${n}_if_any="\$$v"
3411 done
3412
3413 enable $ARCH_EXT_LIST
3414
3415 die_unknown(){
3416     echo "Unknown option \"$1\"."
3417     echo "See $0 --help for available options."
3418     exit 1
3419 }
3420
3421 print_in_columns() {
3422     cols=$(expr $ncols / 24)
3423     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3424 }
3425
3426 show_list() {
3427     suffix=_$1
3428     shift
3429     echo $* | sed s/$suffix//g | print_in_columns
3430     exit 0
3431 }
3432
3433 rand_list(){
3434     IFS=', '
3435     set -- $*
3436     unset IFS
3437     for thing; do
3438         comp=${thing%:*}
3439         prob=${thing#$comp}
3440         prob=${prob#:}
3441         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3442         echo "prob ${prob:-0.5}"
3443         printf '%s\n' $comp
3444     done
3445 }
3446
3447 do_random(){
3448     action=$1
3449     shift
3450     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3451     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3452 }
3453
3454 for opt do
3455     optval="${opt#*=}"
3456     case "$opt" in
3457         --extra-ldflags=*)
3458             add_ldflags $optval
3459         ;;
3460         --extra-ldexeflags=*)
3461             add_ldexeflags $optval
3462         ;;
3463         --extra-ldlibflags=*)
3464             add_ldlibflags $optval
3465         ;;
3466         --extra-libs=*)
3467             add_extralibs $optval
3468         ;;
3469         --disable-devices)
3470             disable $INDEV_LIST $OUTDEV_LIST
3471         ;;
3472         --enable-debug=*)
3473             debuglevel="$optval"
3474         ;;
3475         --disable-programs)
3476             disable $PROGRAM_LIST
3477         ;;
3478         --disable-everything)
3479             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3480         ;;
3481         --disable-all)
3482             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3483             disable $LIBRARY_LIST $PROGRAM_LIST doc
3484             enable avutil
3485         ;;
3486         --enable-random|--disable-random)
3487             action=${opt%%-random}
3488             do_random ${action#--} $COMPONENT_LIST
3489         ;;
3490         --enable-random=*|--disable-random=*)
3491             action=${opt%%-random=*}
3492             do_random ${action#--} $optval
3493         ;;
3494         --enable-*=*|--disable-*=*)
3495             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3496             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3497             eval list=\$$(toupper $thing)_LIST
3498             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3499             list=$(filter "$name" $list)
3500             [ "$list" = "" ] && warn "Option $opt did not match anything"
3501             $action $list
3502         ;;
3503         --enable-?*|--disable-?*)
3504             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3505             if is_in $option $COMPONENT_LIST; then
3506                 test $action = disable && action=unset
3507                 eval $action \$$(toupper ${option%s})_LIST
3508             elif is_in $option $CMDLINE_SELECT; then
3509                 $action $option
3510             else
3511                 die_unknown $opt
3512             fi
3513         ;;
3514         --list-*)
3515             NAME="${opt#--list-}"
3516             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3517             NAME=${NAME%s}
3518             eval show_list $NAME \$$(toupper $NAME)_LIST
3519         ;;
3520         --help|-h) show_help
3521         ;;
3522         --quiet|-q) quiet=yes
3523         ;;
3524         --fatal-warnings) enable fatal_warnings
3525         ;;
3526         *)
3527             optname="${opt%%=*}"
3528             optname="${optname#--}"
3529             optname=$(echo "$optname" | sed 's/-/_/g')
3530             if is_in $optname $CMDLINE_SET; then
3531                 eval $optname='$optval'
3532             elif is_in $optname $CMDLINE_APPEND; then
3533                 append $optname "$optval"
3534             else
3535                 die_unknown $opt
3536             fi
3537         ;;
3538     esac
3539 done
3540
3541 for e in $env; do
3542     eval "export $e"
3543 done
3544
3545 # Mark specifically enabled, but normally autodetected libraries as requested.
3546 for lib in $AUTODETECT_LIBS; do
3547     enabled $lib && request $lib
3548 done
3549
3550 # Enable platform codecs by default.
3551 enable_weak audiotoolbox
3552
3553 # Enable hwaccels by default.
3554 enable_weak d3d11va dxva2 vaapi vda vdpau videotoolbox_hwaccel xvmc
3555 enable_weak xlib
3556
3557 enable_weak cuda cuvid nvenc vda_framework videotoolbox videotoolbox_encoder
3558
3559 disabled logging && logfile=/dev/null
3560
3561 die_license_disabled() {
3562     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3563 }
3564
3565 die_license_disabled_gpl() {
3566     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3567 }
3568
3569 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3570 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3571
3572 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3573 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3574
3575 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3576
3577 # Disable all the library-specific components if the library itself
3578 # is disabled, see AVCODEC_LIST and following _LIST variables.
3579
3580 disable_components(){
3581     disabled ${1} && disable $(
3582         eval components="\$$(toupper ${1})_COMPONENTS"
3583         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3584     )
3585 }
3586
3587 map 'disable_components $v' $LIBRARY_LIST
3588
3589 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3590 set >> $logfile
3591
3592 test -n "$valgrind" && toolchain="valgrind-memcheck"
3593
3594 case "$toolchain" in
3595     *-asan)
3596         cc_default="${toolchain%-asan}"
3597         add_cflags  -fsanitize=address
3598         add_ldflags -fsanitize=address
3599     ;;
3600     *-msan)
3601         cc_default="${toolchain%-msan}"
3602         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3603         add_ldflags -fsanitize=memory
3604     ;;
3605     *-tsan)
3606         cc_default="${toolchain%-tsan}"
3607         add_cflags  -fsanitize=thread -fPIE
3608         add_ldflags -fsanitize=thread -pie
3609         case "$toolchain" in
3610             gcc-tsan)
3611                 add_cflags  -fPIC
3612                 add_ldflags -fPIC
3613                 ;;
3614         esac
3615     ;;
3616     *-usan)
3617         cc_default="${toolchain%-usan}"
3618         add_cflags  -fsanitize=undefined
3619         add_ldflags -fsanitize=undefined
3620     ;;
3621     valgrind-*)
3622         target_exec_default="valgrind"
3623         case "$toolchain" in
3624             valgrind-massif)
3625                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3626                 ;;
3627             valgrind-memcheck)
3628                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3629                 ;;
3630         esac
3631     ;;
3632     msvc)
3633         # Check whether the current MSVC version needs the C99 converter.
3634         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3635         # support enough of C99 to build ffmpeg. Default to the new
3636         # behaviour if the regexp was unable to match anything, since this
3637         # successfully parses the version number of existing supported
3638         # versions that require the converter (MSVC 2010 and 2012).
3639         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3640         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3641             cc_default="cl"
3642         else
3643             cc_default="c99wrap cl"
3644         fi
3645         ld_default="$source_path/compat/windows/mslink"
3646         nm_default="dumpbin -symbols"
3647         ar_default="lib"
3648         case "$arch" in
3649         arm*)
3650             as_default="armasm"
3651             ;;
3652         esac
3653         target_os_default="win32"
3654         # Use a relative path for TMPDIR. This makes sure all the
3655         # ffconf temp files are written with a relative path, avoiding
3656         # issues with msys/win32 path conversion for MSVC parameters
3657         # such as -Fo<file> or -out:<file>.
3658         TMPDIR=.
3659     ;;
3660     icl)
3661         cc_default="icl"
3662         ld_default="xilink"
3663         nm_default="dumpbin -symbols"
3664         ar_default="xilib"
3665         target_os_default="win32"
3666         TMPDIR=.
3667     ;;
3668     gcov)
3669         add_cflags  -fprofile-arcs -ftest-coverage
3670         add_ldflags -fprofile-arcs -ftest-coverage
3671     ;;
3672     llvm-cov)
3673         add_cflags -fprofile-arcs -ftest-coverage
3674         add_ldflags --coverage
3675     ;;
3676     hardened)
3677         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3678         add_cflags   -fno-strict-overflow -fstack-protector-all
3679         add_ldflags  -Wl,-z,relro -Wl,-z,now
3680         add_cflags   -fPIE
3681         add_ldexeflags -fPIE -pie
3682     ;;
3683     ?*)
3684         die "Unknown toolchain $toolchain"
3685     ;;
3686 esac
3687
3688 test -n "$cross_prefix" && enable cross_compile
3689
3690 if enabled cross_compile; then
3691     test -n "$arch" && test -n "$target_os" ||
3692         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3693 fi
3694
3695 ar_default="${cross_prefix}${ar_default}"
3696 cc_default="${cross_prefix}${cc_default}"
3697 cxx_default="${cross_prefix}${cxx_default}"
3698 nm_default="${cross_prefix}${nm_default}"
3699 pkg_config_default="${cross_prefix}${pkg_config_default}"
3700 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3701     ranlib_default="${cross_prefix}${ranlib_default} -D"
3702 else
3703     ranlib_default="${cross_prefix}${ranlib_default}"
3704 fi
3705 strip_default="${cross_prefix}${strip_default}"
3706 windres_default="${cross_prefix}${windres_default}"
3707
3708 sysinclude_default="${sysroot}/usr/include"
3709
3710 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3711     target_exec target_os yasmexe
3712 enabled cross_compile || host_cc_default=$cc
3713 set_default host_cc
3714
3715 pkg_config_fail_message=""
3716 if ! $pkg_config --version >/dev/null 2>&1; then
3717     warn "$pkg_config not found, library detection may fail."
3718     pkg_config=false
3719 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3720     pkg_config_fail_message="
3721 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3722 fi
3723
3724 if test $doxygen != $doxygen_default && \
3725   ! $doxygen --version >/dev/null 2>&1; then
3726     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3727 fi
3728
3729 exesuf() {
3730     case $1 in
3731         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3732     esac
3733 }
3734
3735 EXESUF=$(exesuf $target_os)
3736 HOSTEXESUF=$(exesuf $host_os)
3737
3738 # set temporary file name
3739 : ${TMPDIR:=$TEMPDIR}
3740 : ${TMPDIR:=$TMP}
3741 : ${TMPDIR:=/tmp}
3742
3743 if [ -n "$tempprefix" ] ; then
3744     mktemp(){
3745         echo $tempprefix.${HOSTNAME}.${UID}
3746     }
3747 elif ! check_cmd mktemp -u XXXXXX; then
3748     # simple replacement for missing mktemp
3749     # NOT SAFE FOR GENERAL USE
3750     mktemp(){
3751         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3752     }
3753 fi
3754
3755 tmpfile(){
3756     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3757         (set -C; exec > $tmp) 2>/dev/null ||
3758         die "Unable to create temporary file in $TMPDIR."
3759     append TMPFILES $tmp
3760     eval $1=$tmp
3761 }
3762
3763 trap 'rm -f -- $TMPFILES' EXIT
3764
3765 tmpfile TMPASM .asm
3766 tmpfile TMPC   .c
3767 tmpfile TMPCPP .cpp
3768 tmpfile TMPE   $EXESUF
3769 tmpfile TMPH   .h
3770 tmpfile TMPM   .m
3771 tmpfile TMPO   .o
3772 tmpfile TMPS   .S
3773 tmpfile TMPSH  .sh
3774 tmpfile TMPV   .ver
3775
3776 unset -f mktemp
3777
3778 chmod +x $TMPE
3779
3780 # make sure we can execute files in $TMPDIR
3781 cat > $TMPSH 2>> $logfile <<EOF
3782 #! /bin/sh
3783 EOF
3784 chmod +x $TMPSH >> $logfile 2>&1
3785 if ! $TMPSH >> $logfile 2>&1; then
3786     cat <<EOF
3787 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3788 variable to another directory and make sure that it is not mounted noexec.
3789 EOF
3790     die "Sanity test failed."
3791 fi
3792
3793 armasm_flags(){
3794     for flag; do
3795         case $flag in
3796             # Filter out MSVC cl.exe options from cflags that shouldn't
3797             # be passed to gas-preprocessor
3798             -M[TD]*)                                            ;;
3799             *)                  echo $flag                      ;;
3800         esac
3801    done
3802 }
3803
3804 ccc_flags(){
3805     for flag; do
3806         case $flag in
3807             -std=c99)           echo -c99                       ;;
3808             -mcpu=*)            echo -arch ${flag#*=}           ;;
3809             -mieee)             echo -ieee                      ;;
3810             -O*|-fast)          echo $flag                      ;;
3811             -fno-math-errno)    echo -assume nomath_errno       ;;
3812             -g)                 echo -g3                        ;;
3813             -Wall)              echo -msg_enable level2         ;;
3814             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3815             -Wl,*)              echo $flag                      ;;
3816             -f*|-W*)                                            ;;
3817             *)                  echo $flag                      ;;
3818         esac
3819    done
3820 }
3821
3822 cparser_flags(){
3823     for flag; do
3824         case $flag in
3825             -Wno-switch)             echo -Wno-switch-enum ;;
3826             -Wno-format-zero-length) ;;
3827             -Wdisabled-optimization) ;;
3828             -Wno-pointer-sign)       echo -Wno-other ;;
3829             *)                       echo $flag ;;
3830         esac
3831     done
3832 }
3833
3834 msvc_common_flags(){
3835     for flag; do
3836         case $flag in
3837             # In addition to specifying certain flags under the compiler
3838             # specific filters, they must be specified here as well or else the
3839             # generic catch all at the bottom will print the original flag.
3840             -Wall)                ;;
3841             -std=c99)             ;;
3842             # Common flags
3843             -fomit-frame-pointer) ;;
3844             -g)                   echo -Z7 ;;
3845             -fno-math-errno)      ;;
3846             -fno-common)          ;;
3847             -fno-signed-zeros)    ;;
3848             -fPIC)                ;;
3849             -mthumb)              ;;
3850             -march=*)             ;;
3851             -lz)                  echo zlib.lib ;;
3852             -lavicap32)           echo vfw32.lib user32.lib ;;
3853             -lx264)               echo libx264.lib ;;
3854             -l*)                  echo ${flag#-l}.lib ;;
3855             -LARGEADDRESSAWARE)   echo $flag ;;
3856             -L*)                  echo -libpath:${flag#-L} ;;
3857             *)                    echo $flag ;;
3858         esac
3859     done
3860 }
3861
3862 msvc_flags(){
3863     msvc_common_flags "$@"
3864     for flag; do
3865         case $flag in
3866             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3867                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3868                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3869                                        -wd4307 \
3870                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
3871         esac
3872     done
3873 }
3874
3875 icl_flags(){
3876     msvc_common_flags "$@"
3877     for flag; do
3878         case $flag in
3879             # Despite what Intel's documentation says -Wall, which is supported
3880             # on Windows, does enable remarks so disable them here.
3881             -Wall)                echo $flag -Qdiag-disable:remark ;;
3882             -std=c99)             echo -Qstd=c99 ;;
3883             -flto)                echo -ipo ;;
3884         esac
3885     done
3886 }
3887
3888 icc_flags(){
3889     for flag; do
3890         case $flag in
3891             -flto)                echo -ipo ;;
3892             *)                    echo $flag ;;
3893         esac
3894     done
3895 }
3896
3897 pgi_flags(){
3898     for flag; do
3899         case $flag in
3900             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3901             -fomit-frame-pointer) echo -Mnoframe ;;
3902             -g)                   echo -gopt ;;
3903             *)                    echo $flag ;;
3904         esac
3905     done
3906 }
3907
3908 suncc_flags(){
3909     for flag; do
3910         case $flag in
3911             -march=*|-mcpu=*)
3912                 case "${flag#*=}" in
3913                     native)                   echo -xtarget=native       ;;
3914                     v9|niagara)               echo -xarch=sparc          ;;
3915                     ultrasparc)               echo -xarch=sparcvis       ;;
3916                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3917                     i586|pentium)             echo -xchip=pentium        ;;
3918                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3919                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3920                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3921                     pentium4*)          echo -xtarget=pentium4           ;;
3922                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3923                     *-sse3)             echo -xarch=sse3                 ;;
3924                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3925                     bonnell)                   echo -xarch=ssse3         ;;
3926                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3927                     westmere)                  echo -xtarget=westmere    ;;
3928                     silvermont)                echo -xarch=sse4_2        ;;
3929                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3930                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
3931                                                echo -xarch=avx           ;;
3932                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3933                     btver1)                    echo -xarch=amdsse4a      ;;
3934                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
3935                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3936                     k8|opteron|athlon64|athlon-fx)
3937                                                echo -xarch=sse2a         ;;
3938                     athlon*)                   echo -xarch=pentium_proa  ;;
3939                 esac
3940                 ;;
3941             -std=c99)             echo -xc99              ;;
3942             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3943             -fPIC)                echo -KPIC -xcode=pic32 ;;
3944             -W*,*)                echo $flag              ;;
3945             -f*-*|-W*|-mimpure-text)                      ;;
3946             -shared)              echo -G                 ;;
3947             *)                    echo $flag              ;;
3948         esac
3949     done
3950 }
3951
3952 tms470_flags(){
3953     for flag; do
3954         case $flag in
3955             -march=*|-mcpu=*)
3956                 case "${flag#*=}" in
3957                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3958                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3959                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3960                     armv6*|arm11*)          echo -mv=6   ;;
3961                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3962                                             echo -mv=5e  ;;
3963                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3964                 esac
3965                 ;;
3966             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3967             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3968             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3969             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3970             -msoft-float)   echo --float_support=vfplib       ;;
3971             -O[0-3]|-mf=*)  echo $flag                        ;;
3972             -g)             echo -g -mn                       ;;
3973             -pds=*)         echo $flag                        ;;
3974             -D*|-I*)        echo $flag                        ;;
3975             --gcc|--abi=*)  echo $flag                        ;;
3976             -me)            echo $flag                        ;;
3977         esac
3978     done
3979 }
3980
3981 probe_cc(){
3982     pfx=$1
3983     _cc=$2
3984     first=$3
3985
3986     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3987     unset _ld_o _ldflags _ld_lib _ld_path
3988     unset _depflags _DEPCMD _DEPFLAGS
3989     _flags_filter=echo
3990
3991     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3992         true # no-op to avoid reading stdin in following checks
3993     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3994         _type=llvm_gcc
3995         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3996         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3997         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3998         _cflags_speed='-O3'
3999         _cflags_size='-Os'
4000     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4001         _type=gcc
4002         gcc_version=$($_cc --version | head -n1)
4003         gcc_basever=$($_cc -dumpversion)
4004         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4005         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4006         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4007         case $gcc_basever in
4008             2) ;;
4009             2.*) ;;
4010             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4011         esac
4012         if [ "$first" = true ]; then
4013             case $gcc_basever in
4014                 4.2*)
4015                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4016             esac
4017         fi
4018         _cflags_speed='-O3'
4019         _cflags_size='-Os'
4020     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4021         _type=icc
4022         _ident=$($_cc --version | head -n1)
4023         _depflags='-MMD'
4024         _cflags_speed='-O3'
4025         _cflags_size='-Os'
4026         _cflags_noopt='-O1'
4027         _flags_filter=icc_flags
4028     elif $_cc -v 2>&1 | grep -q xlc; then
4029         _type=xlc
4030         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4031         _cflags_speed='-O5'
4032         _cflags_size='-O5 -qcompact'
4033     elif $_cc -V 2>/dev/null | grep -q Compaq; then
4034         _type=ccc
4035         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
4036         _DEPFLAGS='-M'
4037         _cflags_speed='-fast'
4038         _cflags_size='-O1'
4039         _flags_filter=ccc_flags
4040     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4041         test -d "$sysroot" || die "No valid sysroot specified."
4042         _type=armcc
4043         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4044         armcc_conf="$PWD/armcc.conf"
4045         $_cc --arm_linux_configure                 \
4046              --arm_linux_config_file="$armcc_conf" \
4047              --configure_sysroot="$sysroot"        \
4048              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4049              die "Error creating armcc configuration file."
4050         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4051         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4052         as_default="${cross_prefix}gcc"
4053         _depflags='-MMD'
4054         _cflags_speed='-O3'
4055         _cflags_size='-Os'
4056     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
4057         _type=tms470
4058         _ident=$($_cc -version | head -n1 | tr -s ' ')
4059         _flags='--gcc --abi=eabi -me'
4060         _cc_e='-ppl -fe=$@'
4061         _cc_o='-fe=$@'
4062         _depflags='-ppa -ppd=$(@:.o=.d)'
4063         _cflags_speed='-O3 -mf=5'
4064         _cflags_size='-O3 -mf=2'
4065         _flags_filter=tms470_flags
4066     elif $_cc -v 2>&1 | grep -q clang; then
4067         _type=clang
4068         _ident=$($_cc --version 2>/dev/null | head -n1)
4069         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4070         _cflags_speed='-O3'
4071         _cflags_size='-Oz'
4072     elif $_cc -V 2>&1 | grep -q Sun; then
4073         _type=suncc
4074         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4075         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4076         _DEPFLAGS='-xM1 -xc99'
4077         _ldflags='-std=c99'
4078         _cflags_speed='-O5'
4079         _cflags_size='-O5 -xspace'
4080         _flags_filter=suncc_flags
4081     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4082         _type=pathscale
4083         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4084         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4085         _cflags_speed='-O2'
4086         _cflags_size='-Os'
4087         _flags_filter='filter_out -Wdisabled-optimization'
4088     elif $_cc -v 2>&1 | grep -q Open64; then
4089         _type=open64
4090         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4091         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4092         _cflags_speed='-O2'
4093         _cflags_size='-Os'
4094         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4095     elif $_cc -V 2>&1 | grep -q Portland; then
4096         _type=pgi
4097         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
4098         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
4099         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
4100         _cflags_size="-O2 -Munroll=c:1 $opt_common"
4101         _cflags_noopt="-O"
4102         _flags_filter=pgi_flags
4103     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4104         _type=armasm
4105         _ident=$($_cc | head -n1)
4106         # 4509: "This form of conditional instruction is deprecated"
4107         _flags="-nologo -ignore 4509"
4108         _flags_filter=armasm_flags
4109     elif $_cc 2>&1 | grep -q Intel; then
4110         _type=icl
4111         _ident=$($_cc 2>&1 | head -n1)
4112         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4113         # Not only is O3 broken on 13.x+ but it is slower on all previous
4114         # versions (tested) as well.
4115         _cflags_speed="-O2"
4116         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4117         if $_cc 2>&1 | grep -q Linker; then
4118             _ld_o='-out:$@'
4119         else
4120             _ld_o='-Fe$@'
4121         fi
4122         _cc_o='-Fo$@'
4123         _cc_e='-P'
4124         _flags_filter=icl_flags
4125         _ld_lib='lib%.a'
4126         _ld_path='-libpath:'
4127         # -Qdiag-error to make icl error when seeing certain unknown arguments
4128         _flags='-nologo -Qdiag-error:4044,10157'
4129         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4130         # with MSVC which enables it by default.
4131         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4132         disable stripping
4133     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4134         # lld can emulate multiple different linkers; in ms link.exe mode,
4135         # the -? parameter gives the help output which contains an identifyable
4136         # string, while it gives an error in other modes.
4137         _type=lld-link
4138         # The link.exe mode doesn't have a switch for getting the version,
4139         # but we can force it back to gnu mode and get the version from there.
4140         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4141         _ld_o='-out:$@'
4142         _flags_filter=msvc_flags
4143         _ld_lib='lib%.a'
4144         _ld_path='-libpath:'
4145     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4146         _type=msvc
4147         _ident=$($_cc 2>&1 | head -n1)
4148         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4149         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4150         _cflags_speed="-O2"
4151         _cflags_size="-O1"
4152         if $_cc -nologo- 2>&1 | grep -q Linker; then
4153             _ld_o='-out:$@'
4154         else
4155             _ld_o='-Fe$@'
4156         fi
4157         _cc_o='-Fo$@'
4158         _cc_e='-P -Fi$@'
4159         _flags_filter=msvc_flags
4160         _ld_lib='lib%.a'
4161         _ld_path='-libpath:'
4162         _flags='-nologo'
4163         disable stripping
4164     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4165         _type=cparser
4166         _ident=$($_cc --version | head -n1)
4167         _depflags='-MMD'
4168         _cflags_speed='-O4'
4169         _cflags_size='-O2'
4170         _flags_filter=cparser_flags
4171     fi
4172
4173     eval ${pfx}_type=\$_type
4174     eval ${pfx}_ident=\$_ident
4175 }
4176
4177 set_ccvars(){
4178     eval ${1}_C=\${_cc_c-\${${1}_C}}
4179     eval ${1}_E=\${_cc_e-\${${1}_E}}
4180     eval ${1}_O=\${_cc_o-\${${1}_O}}
4181
4182     if [ -n "$_depflags" ]; then
4183         eval ${1}_DEPFLAGS=\$_depflags
4184     else
4185         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4186         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4187         eval DEP${1}FLAGS=\$_flags
4188     fi
4189 }
4190
4191 probe_cc cc "$cc" "true"
4192 cflags_filter=$_flags_filter
4193 cflags_speed=$_cflags_speed
4194 cflags_size=$_cflags_size
4195 cflags_noopt=$_cflags_noopt
4196 add_cflags $_flags $_cflags
4197 cc_ldflags=$_ldflags
4198 set_ccvars CC
4199
4200 probe_cc hostcc "$host_cc"
4201 host_cflags_filter=$_flags_filter
4202 add_host_cflags  $_flags $_cflags
4203 set_ccvars HOSTCC
4204
4205 test -n "$cc_type" && enable $cc_type ||
4206     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4207
4208 : ${as_default:=$cc}
4209 : ${objcc_default:=$cc}
4210 : ${dep_cc_default:=$cc}
4211 : ${ld_default:=$cc}
4212 : ${host_ld_default:=$host_cc}
4213 set_default ar as objcc dep_cc ld ln_s host_ld windres
4214
4215 probe_cc as "$as"
4216 asflags_filter=$_flags_filter
4217 add_asflags $_flags $_cflags
4218 set_ccvars AS
4219
4220 probe_cc objcc "$objcc"
4221 objcflags_filter=$_flags_filter
4222 add_objcflags $_flags $_cflags
4223 set_ccvars OBJC
4224
4225 probe_cc ld "$ld"
4226 ldflags_filter=$_flags_filter
4227 add_ldflags $_flags $_ldflags
4228 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4229 LD_O=${_ld_o-$LD_O}
4230 LD_LIB=${_ld_lib-$LD_LIB}
4231 LD_PATH=${_ld_path-$LD_PATH}
4232
4233 probe_cc hostld "$host_ld"
4234 host_ldflags_filter=$_flags_filter
4235 add_host_ldflags $_flags $_ldflags
4236 HOSTLD_O=${_ld_o-$HOSTLD_O}
4237
4238 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4239     probe_cc depcc "$dep_cc"
4240     CCDEP=${_DEPCMD:-$DEPCMD}
4241     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4242     DEPCCFLAGS=$_flags
4243 fi
4244
4245 if $ar 2>&1 | grep -q Microsoft; then
4246     arflags="-nologo"
4247     ar_o='-out:$@'
4248 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
4249     arflags="rq"
4250     ar_o='$@'
4251 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
4252     arflags='-Xany -r -c'
4253     ar_o='$@'
4254 elif $ar 2>&1 | grep -q "\[D\] "; then
4255     arflags="rcD"
4256     ar_o='$@'
4257 else
4258     arflags="rc"
4259     ar_o='$@'
4260 fi
4261
4262 add_cflags $extra_cflags
4263 add_cxxflags $extra_cxxflags
4264 add_objcflags $extra_objcflags
4265 add_asflags $extra_cflags
4266
4267 if test -n "$sysroot"; then
4268     case "$cc_type" in
4269         gcc|llvm_gcc|clang)
4270             add_cppflags --sysroot="$sysroot"
4271             add_ldflags --sysroot="$sysroot"
4272 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
4273             add_cppflags -isysroot "$sysroot"
4274             add_ldflags -isysroot "$sysroot"
4275         ;;
4276         tms470)
4277             add_cppflags -I"$sysinclude"
4278             add_ldflags  --sysroot="$sysroot"
4279         ;;
4280     esac
4281 fi
4282
4283 if test "$cpu" = host; then
4284     enabled cross_compile &&
4285         die "--cpu=host makes no sense when cross-compiling."
4286
4287     case "$cc_type" in
4288         gcc|llvm_gcc)
4289             check_native(){
4290                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4291                 sed -n "/cc1.*$1=/{
4292                             s/.*$1=\\([^ ]*\\).*/\\1/
4293                             p
4294                             q
4295                         }" $TMPE
4296             }
4297             cpu=$(check_native -march || check_native -mcpu)
4298         ;;
4299         clang)
4300             check_native(){
4301                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4302                 sed -n "/cc1.*-target-cpu /{
4303                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4304                             p
4305                             q
4306                         }" $TMPE
4307             }
4308             cpu=$(check_native -march)
4309         ;;
4310     esac
4311
4312     test "${cpu:-host}" = host &&
4313         die "--cpu=host not supported with compiler $cc"
4314 fi
4315
4316 # Deal with common $arch aliases
4317 case "$arch" in
4318     aarch64|arm64)
4319         arch="aarch64"
4320     ;;
4321     arm*|iPad*|iPhone*)
4322         arch="arm"
4323     ;;
4324     mips*|IP*)
4325         case "$arch" in
4326         *el)
4327             add_cppflags -EL
4328             add_ldflags -EL
4329         ;;
4330         *eb)
4331             add_cppflags -EB
4332             add_ldflags -EB
4333         ;;
4334         esac
4335         arch="mips"
4336     ;;
4337     parisc*|hppa*)
4338         arch="parisc"
4339     ;;
4340     "Power Macintosh"|ppc*|powerpc*)
4341         arch="ppc"
4342     ;;
4343     s390|s390x)
4344         arch="s390"
4345     ;;
4346     sh4|sh)
4347         arch="sh4"
4348     ;;
4349     sun4*|sparc*)
4350         arch="sparc"
4351     ;;
4352     tilegx|tile-gx)
4353         arch="tilegx"
4354     ;;
4355     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4356         arch="x86"
4357     ;;
4358 esac
4359
4360 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4361 enable $arch
4362
4363 # Add processor-specific flags
4364 if enabled aarch64; then
4365
4366     case $cpu in
4367         armv*)
4368             cpuflags="-march=$cpu"
4369         ;;
4370         *)
4371             cpuflags="-mcpu=$cpu"
4372         ;;
4373     esac
4374
4375 elif enabled alpha; then
4376
4377     cpuflags="-mcpu=$cpu"
4378
4379 elif enabled arm; then
4380
4381     check_arm_arch() {
4382         check_cpp_condition stddef.h \
4383             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4384             $cpuflags
4385     }
4386
4387     probe_arm_arch() {
4388         if   check_arm_arch 4;        then echo armv4
4389         elif check_arm_arch 4T;       then echo armv4t
4390         elif check_arm_arch 5;        then echo armv5
4391         elif check_arm_arch 5E;       then echo armv5e
4392         elif check_arm_arch 5T;       then echo armv5t
4393         elif check_arm_arch 5TE;      then echo armv5te
4394         elif check_arm_arch 5TEJ;     then echo armv5te
4395         elif check_arm_arch 6;        then echo armv6
4396         elif check_arm_arch 6J;       then echo armv6j
4397         elif check_arm_arch 6K;       then echo armv6k
4398         elif check_arm_arch 6Z;       then echo armv6z
4399         elif check_arm_arch 6ZK;      then echo armv6zk
4400         elif check_arm_arch 6T2;      then echo armv6t2
4401         elif check_arm_arch 7;        then echo armv7
4402         elif check_arm_arch 7A  7_A;  then echo armv7-a
4403         elif check_arm_arch 7S;       then echo armv7-a
4404         elif check_arm_arch 7R  7_R;  then echo armv7-r
4405         elif check_arm_arch 7M  7_M;  then echo armv7-m
4406         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4407         elif check_arm_arch 8A  8_A;  then echo armv8-a
4408         fi
4409     }
4410
4411     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4412
4413     case $cpu in
4414         armv*)
4415             cpuflags="-march=$cpu"
4416             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4417         ;;
4418         *)
4419             cpuflags="-mcpu=$cpu"
4420             case $cpu in
4421                 cortex-a*)                               subarch=armv7a  ;;
4422                 cortex-r*)                               subarch=armv7r  ;;
4423                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4424                 arm11*)                                  subarch=armv6   ;;
4425                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4426                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4427                 *)                             subarch=$(probe_arm_arch) ;;
4428             esac
4429         ;;
4430     esac
4431
4432     case "$subarch" in
4433         armv5t*)    enable fast_clz                ;;
4434         armv[6-8]*)
4435             enable fast_clz
4436             disabled fast_unaligned || enable fast_unaligned
4437             ;;
4438     esac
4439
4440 elif enabled avr32; then
4441
4442     case $cpu in
4443         ap7[02]0[0-2])
4444             subarch="avr32_ap"
4445             cpuflags="-mpart=$cpu"
4446         ;;
4447         ap)
4448             subarch="avr32_ap"
4449             cpuflags="-march=$cpu"
4450         ;;
4451         uc3[ab]*)
4452             subarch="avr32_uc"
4453             cpuflags="-mcpu=$cpu"
4454         ;;
4455         uc)
4456             subarch="avr32_uc"
4457             cpuflags="-march=$cpu"
4458         ;;
4459     esac
4460
4461 elif enabled bfin; then
4462
4463     cpuflags="-mcpu=$cpu"
4464
4465 elif enabled mips; then
4466
4467     cpuflags="-march=$cpu"
4468
4469     if [ "$cpu" != "generic" ]; then
4470         disable mips32r2
4471         disable mips32r5
4472         disable mips64r2
4473         disable mips32r6
4474         disable mips64r6
4475         disable loongson2
4476         disable loongson3
4477
4478         case $cpu in
4479             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4480                 enable mips32r2
4481                 disable msa
4482             ;;
4483             p5600|i6400|p6600)
4484                 disable mipsdsp
4485                 disable mipsdspr2
4486             ;;
4487             loongson*)
4488                 enable loongson2
4489                 enable loongson3
4490                 enable local_aligned_8 local_aligned_16 local_aligned_32
4491                 enable simd_align_16
4492                 enable fast_64bit
4493                 enable fast_clz
4494                 enable fast_cmov
4495                 enable fast_unaligned
4496                 disable aligned_stack
4497                 disable mipsfpu
4498                 disable mipsdsp
4499                 disable mipsdspr2
4500                 case $cpu in
4501                     loongson3*)
4502                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4503                     ;;
4504                     loongson2e)
4505                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4506                     ;;
4507                     loongson2f)
4508                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4509                     ;;
4510                 esac
4511             ;;
4512             *)
4513                 # Unknown CPU. Disable everything.
4514                 warn "unknown CPU. Disabling all MIPS optimizations."
4515                 disable mipsfpu
4516                 disable mipsdsp
4517                 disable mipsdspr2
4518                 disable msa
4519                 disable mmi
4520             ;;
4521         esac
4522
4523         case $cpu in
4524             24kc)
4525                 disable mipsfpu
4526                 disable mipsdsp
4527                 disable mipsdspr2
4528             ;;
4529             24kf*)
4530                 disable mipsdsp
4531                 disable mipsdspr2
4532             ;;
4533             24kec|34kc|1004kc)
4534                 disable mipsfpu
4535                 disable mipsdspr2
4536             ;;
4537             24kef*|34kf*|1004kf*)
4538                 disable mipsdspr2
4539             ;;
4540             74kc)
4541                 disable mipsfpu
4542             ;;
4543             p5600)
4544                 enable mips32r5
4545                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4546             ;;
4547             i6400)
4548                 enable mips64r6
4549                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4550             ;;
4551             p6600)
4552                 enable mips64r6
4553                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4554             ;;
4555         esac
4556     else
4557         # We do not disable anything. Is up to the user to disable the unwanted features.
4558         warn 'generic cpu selected'
4559     fi
4560
4561 elif enabled ppc; then
4562
4563     disable ldbrx
4564
4565     case $(tolower $cpu) in
4566         601|ppc601|powerpc601)
4567             cpuflags="-mcpu=601"
4568             disable altivec
4569         ;;
4570         603*|ppc603*|powerpc603*)
4571             cpuflags="-mcpu=603"
4572             disable altivec
4573         ;;
4574         604*|ppc604*|powerpc604*)
4575             cpuflags="-mcpu=604"
4576             disable altivec
4577         ;;
4578         g3|75*|ppc75*|powerpc75*)
4579             cpuflags="-mcpu=750"
4580             disable altivec
4581         ;;
4582         g4|745*|ppc745*|powerpc745*)
4583             cpuflags="-mcpu=7450"
4584             disable vsx
4585         ;;
4586         74*|ppc74*|powerpc74*)
4587             cpuflags="-mcpu=7400"
4588             disable vsx
4589         ;;
4590         g5|970|ppc970|powerpc970)
4591             cpuflags="-mcpu=970"
4592             disable vsx
4593         ;;
4594         power[3-6]*)
4595             cpuflags="-mcpu=$cpu"
4596             disable vsx
4597         ;;
4598         power[7-8]*)
4599             cpuflags="-mcpu=$cpu"
4600         ;;
4601         cell)
4602             cpuflags="-mcpu=cell"
4603             enable ldbrx
4604             disable vsx
4605         ;;
4606         e500mc)
4607             cpuflags="-mcpu=e500mc"
4608             disable altivec
4609         ;;
4610         e500v2)
4611             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4612             disable altivec
4613             disable dcbzl
4614         ;;
4615         e500)
4616             cpuflags="-mcpu=8540 -mhard-float"
4617             disable altivec
4618             disable dcbzl
4619         ;;
4620     esac
4621
4622 elif enabled sparc; then
4623
4624     case $cpu in
4625         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4626             cpuflags="-mcpu=$cpu"
4627         ;;
4628         ultrasparc*|niagara[234])
4629             cpuflags="-mcpu=$cpu"
4630         ;;
4631     esac
4632
4633 elif enabled x86; then
4634
4635     case $cpu in
4636         i[345]86|pentium)
4637             cpuflags="-march=$cpu"
4638             disable i686
4639             disable mmx
4640         ;;
4641         # targets that do NOT support nopl and conditional mov (cmov)
4642         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4643             cpuflags="-march=$cpu"
4644             disable i686
4645         ;;
4646         # targets that do support nopl and conditional mov (cmov)
4647         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4648         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4649         |amdfam10|barcelona|b[dt]ver*|znver*)
4650             cpuflags="-march=$cpu"
4651             enable i686
4652             enable fast_cmov
4653         ;;
4654         # targets that do support conditional mov but on which it's slow
4655         pentium4|pentium4m|prescott|nocona)
4656             cpuflags="-march=$cpu"
4657             enable i686
4658             disable fast_cmov
4659         ;;
4660     esac
4661
4662 fi
4663
4664 if [ "$cpu" != generic ]; then
4665     add_cflags  $cpuflags
4666     add_asflags $cpuflags
4667     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4668 fi
4669
4670 # compiler sanity check
4671 check_exec <<EOF
4672 int main(void){ return 0; }
4673 EOF
4674 if test "$?" != 0; then
4675     echo "$cc is unable to create an executable file."
4676     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4677         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4678         echo "Only do this if you know what cross compiling means."
4679     fi
4680     die "C compiler test failed."
4681 fi
4682
4683 add_cppflags -D_ISOC99_SOURCE
4684 add_cxxflags -D__STDC_CONSTANT_MACROS
4685 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4686
4687 # some compilers silently accept -std=c11, so we also need to check that the
4688 # version macro is defined properly
4689 if test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L"; then
4690     add_cflags -std=c11
4691 else
4692     check_cflags -std=c99
4693 fi
4694
4695 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4696 #include <stdlib.h>
4697 EOF
4698 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4699 #include <stdlib.h>
4700 EOF
4701
4702 add_host_cppflags -D_ISOC99_SOURCE
4703 check_host_cflags -std=c99
4704 check_host_cflags -Wall
4705 check_host_cflags -O3
4706
4707 check_64bit(){
4708     arch32=$1
4709     arch64=$2
4710     expr=$3
4711     check_code cc "" "int test[2*($expr) - 1]" &&
4712         subarch=$arch64 || subarch=$arch32
4713 }
4714
4715 case "$arch" in
4716     aarch64|alpha|ia64)
4717         spic=$shared
4718     ;;
4719     mips)
4720         check_64bit mips mips64 '_MIPS_SIM > 1'
4721         spic=$shared
4722     ;;
4723     parisc)
4724         check_64bit parisc parisc64 'sizeof(void *) > 4'
4725         spic=$shared
4726     ;;
4727     ppc)
4728         check_64bit ppc ppc64 'sizeof(void *) > 4'
4729         spic=$shared
4730     ;;
4731     s390)
4732         check_64bit s390 s390x 'sizeof(void *) > 4'
4733         spic=$shared
4734     ;;
4735     sparc)
4736         check_64bit sparc sparc64 'sizeof(void *) > 4'
4737         spic=$shared
4738     ;;
4739     x86)
4740         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4741         # Treat x32 as x64 for now. Note it also needs spic=$shared
4742         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4743             subarch=x86_64
4744         if test "$subarch" = "x86_64"; then
4745             spic=$shared
4746         fi
4747     ;;
4748     ppc)
4749         check_cc <<EOF && subarch="ppc64"
4750         int test[(int)sizeof(char*) - 7];
4751 EOF
4752     ;;
4753 esac
4754
4755 enable $subarch
4756 enabled spic && enable_weak pic
4757
4758 # OS specific
4759 case $target_os in
4760     aix)
4761         SHFLAGS=-shared
4762         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4763         enabled shared && add_ldflags -Wl,-brtl
4764         ;;
4765     android)
4766         disable symver
4767         enable section_data_rel_ro
4768         SLIB_INSTALL_NAME='$(SLIBNAME)'
4769         SLIB_INSTALL_LINKS=
4770         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4771         ;;
4772     haiku)
4773         prefix_default="/boot/common"
4774         network_extralibs="-lnetwork"
4775         host_libs=
4776         ;;
4777     sunos)
4778         SHFLAGS='-shared -Wl,-h,$$(@F)'
4779         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4780         network_extralibs="-lsocket -lnsl"
4781         add_cppflags -D__EXTENSIONS__
4782         # When using suncc to build, the Solaris linker will mark
4783         # an executable with each instruction set encountered by
4784         # the Solaris assembler.  As our libraries contain their own
4785         # guards for processor-specific code, instead suppress
4786         # generation of the HWCAPS ELF section on Solaris x86 only.
4787         enabled_all suncc x86 &&
4788             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4789             add_ldflags -Wl,-M,mapfile
4790         nm_default='nm -P -g'
4791         version_script='-M'
4792         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
4793         ;;
4794     netbsd)
4795         disable symver
4796         oss_indev_extralibs="-lossaudio"
4797         oss_outdev_extralibs="-lossaudio"
4798         enabled gcc || check_ldflags -Wl,-zmuldefs
4799         ;;
4800     openbsd|bitrig)
4801         disable symver
4802         SHFLAGS='-shared'
4803         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4804         SLIB_INSTALL_LINKS=
4805         oss_indev_extralibs="-lossaudio"
4806         oss_outdev_extralibs="-lossaudio"
4807         ;;
4808     dragonfly)
4809         disable symver
4810         ;;
4811     freebsd)
4812         ;;
4813     bsd/os)
4814         add_extralibs -lpoll -lgnugetopt
4815         strip="strip -d"
4816         ;;
4817     darwin)
4818         enabled ppc && add_asflags -force_cpusubtype_ALL
4819         install_name_dir_default='$(SHLIBDIR)'
4820         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4821         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4822         strip="${strip} -x"
4823         add_ldflags -Wl,-dynamic,-search_paths_first
4824         SLIBSUF=".dylib"
4825         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4826         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4827         objformat="macho"
4828         enabled x86_64 && objformat="macho64"
4829         enabled_any pic shared x86_64 ||
4830             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4831         check_header dispatch/dispatch.h &&
4832             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
4833         version_script='-exported_symbols_list'
4834         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
4835         ;;
4836     msys*)
4837         die "Native MSYS builds are discouraged, please use the MINGW environment."
4838         ;;
4839     mingw32*|mingw64*)
4840         if test $target_os = "mingw32ce"; then
4841             disable network
4842         else
4843             target_os=mingw32
4844         fi
4845         decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
4846         decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
4847         LIBTARGET=i386
4848         if enabled x86_64; then
4849             LIBTARGET="i386:x86-64"
4850         elif enabled arm; then
4851             LIBTARGET=arm-wince
4852         fi
4853         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4854         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4855         shlibdir_default="$bindir_default"
4856         SLIBPREF=""
4857         SLIBSUF=".dll"
4858         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4859         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4860         dlltool="${cross_prefix}dlltool"
4861         if check_cmd lib.exe -list; then
4862             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4863             if enabled x86_64; then
4864                 LIBTARGET=x64
4865             fi
4866         elif check_cmd $dlltool --version; then
4867             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4868         fi
4869         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4870         SLIB_INSTALL_LINKS=
4871         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4872         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4873         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--disable-auto-image-base'
4874         objformat="win32"
4875         ranlib=:
4876         enable dos_paths
4877         check_ldflags -Wl,--nxcompat,--dynamicbase
4878         # Lets work around some stupidity in binutils.
4879         # ld will strip relocations from executables even though we need them
4880         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4881         # however ld then forgets what the entry point should be (oops) so we
4882         # have to manually (re)set it.
4883         if enabled x86_32; then
4884             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
4885         elif enabled x86_64; then
4886             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
4887             check_ldflags -Wl,--high-entropy-va # binutils 2.25
4888             # Set image base >4GB for extra entropy with HEASLR
4889             add_ldexeflags -Wl,--image-base,0x140000000
4890             append SHFLAGS -Wl,--image-base,0x180000000
4891         fi
4892         ;;
4893     win32|win64)
4894         disable symver
4895         if enabled shared; then
4896             # Link to the import library instead of the normal static library
4897             # for shared libs.
4898             LD_LIB='%.lib'
4899             # Cannot build both shared and static libs with MSVC or icl.
4900             disable static
4901         fi
4902         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4903         shlibdir_default="$bindir_default"
4904         SLIBPREF=""
4905         SLIBSUF=".dll"
4906         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4907         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4908         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4909         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4910         SLIB_INSTALL_LINKS=
4911         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4912         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4913         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4914         objformat="win32"
4915         ranlib=:
4916         enable dos_paths
4917         ;;
4918     cygwin*)
4919         target_os=cygwin
4920         shlibdir_default="$bindir_default"
4921         SLIBPREF="cyg"
4922         SLIBSUF=".dll"
4923         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4924         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4925         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4926         SLIB_INSTALL_LINKS=
4927         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4928         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4929         objformat="win32"
4930         enable dos_paths
4931         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4932         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4933         ;;
4934     *-dos|freedos|opendos)
4935         network_extralibs="-lsocket"
4936         objformat="coff"
4937         enable dos_paths
4938         add_cppflags -U__STRICT_ANSI__
4939         ;;
4940     linux)
4941         enable dv1394
4942         enable section_data_rel_ro
4943         ;;
4944     irix*)
4945         target_os=irix
4946         ranlib="echo ignoring ranlib"
4947         ;;
4948     os/2*)
4949         strip="lxlite -CS"
4950         objformat="aout"
4951         add_cppflags -D_GNU_SOURCE
4952         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4953         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4954         LIBSUF="_s.a"
4955         SLIBPREF=""
4956         SLIBSUF=".dll"
4957         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4958         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4959         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
4960             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
4961             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
4962             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
4963             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
4964         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
4965             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
4966         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4967         SLIB_INSTALL_LINKS=
4968         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
4969         enable dos_paths
4970         enable_weak os2threads
4971         ;;
4972     gnu/kfreebsd)
4973         add_cppflags -D_BSD_SOURCE
4974         ;;
4975     gnu)
4976         ;;
4977     qnx)
4978         add_cppflags -D_QNX_SOURCE
4979         network_extralibs="-lsocket"
4980         ;;
4981     symbian)
4982         SLIBSUF=".dll"
4983         enable dos_paths
4984         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4985         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4986         add_ldflags -Wl,--target1-abs,--no-undefined \
4987                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4988                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4989         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4990                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4991                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4992         ;;
4993     osf1)
4994         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4995         ;;
4996     minix)
4997         ;;
4998     none)
4999         ;;
5000     *)
5001         die "Unknown OS '$target_os'."
5002         ;;
5003 esac
5004
5005 # test if creating links works
5006 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5007 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5008 mkdir "$link_dest"
5009 $ln_s "$link_dest" "$link_name"
5010 touch "$link_dest/test_file"
5011 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5012     # create link to source path
5013     [ -e src ] && rm src
5014     $ln_s "$source_path" src
5015     source_link=src
5016 else
5017     # creating directory links doesn't work
5018     # fall back to using the full source path
5019     source_link="$source_path"
5020 fi
5021 # cleanup
5022 rm -r "$link_dest"
5023 rm -r "$link_name"
5024
5025 # determine libc flavour
5026
5027 probe_libc(){
5028     pfx=$1
5029     pfx_no_=${pfx%_}
5030     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5031     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5032         eval ${pfx}libc_type=uclibc
5033         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5034     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5035         eval ${pfx}libc_type=glibc
5036         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5037     # MinGW headers can be installed on Cygwin, so check for newlib first.
5038     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5039         eval ${pfx}libc_type=newlib
5040         add_${pfx}cppflags -U__STRICT_ANSI__
5041     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5042     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5043         eval ${pfx}libc_type=mingw64
5044         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5045             add_compat msvcrt/snprintf.o
5046             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5047         fi
5048         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5049         eval test \$${pfx_no_}cc_type = "gcc" &&
5050             add_${pfx}cppflags -D__printf__=__gnu_printf__
5051     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5052          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5053         eval ${pfx}libc_type=mingw32
5054         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5055             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5056             die "ERROR: MinGW32 runtime version must be >= 3.15."
5057         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5058         check_${pfx}cpp_condition _mingw.h "defined(_WIN32_WINNT) && _WIN32_WINNT >= 0x0502" ||
5059             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
5060         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700__" &&
5061             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5062         eval test \$${pfx_no_}cc_type = "gcc" &&
5063             add_${pfx}cppflags -D__printf__=__gnu_printf__
5064     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5065         eval ${pfx}libc_type=msvcrt
5066         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5067             if [ "$pfx" = host_ ]; then
5068                 add_host_cppflags -Dsnprintf=_snprintf
5069             else
5070                 add_compat strtod.o strtod=avpriv_strtod
5071                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5072                                              _snprintf=avpriv_snprintf  \
5073                                              vsnprintf=avpriv_vsnprintf
5074             fi
5075         fi
5076         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5077         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5078         # 0x601 by default unless something else is set by the user.
5079         # This can easily lead to us detecting functions only present
5080         # in such new versions and producing binaries requiring windows 7.0.
5081         # Therefore explicitly set the default to XP unless the user has
5082         # set something else on the command line.
5083         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5084         # family. For these cases, configure is free to use any functions
5085         # found in the SDK headers by default. (Alternatively, we could force
5086         # _WIN32_WINNT to 0x0602 in that case.)
5087         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5088             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
5089 #ifdef WINAPI_FAMILY
5090 #include <winapifamily.h>
5091 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5092 #error not desktop
5093 #endif
5094 #endif
5095 EOF
5096         if [ "$pfx" = "" ]; then
5097             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5098             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5099         fi
5100     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5101         eval ${pfx}libc_type=klibc
5102     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5103         eval ${pfx}libc_type=bionic
5104     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5105         eval ${pfx}libc_type=solaris
5106         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5107     fi
5108     check_${pfx}cc <<EOF
5109 #include <time.h>
5110 void *v = localtime_r;
5111 EOF
5112 test "$?" != 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
5113 #include <time.h>
5114 void *v = localtime_r;
5115 EOF
5116
5117 }
5118
5119 probe_libc
5120 test -n "$libc_type" && enable libc_$libc_type
5121 probe_libc host_
5122 test -n "$host_libc_type" && enable host_libc_$host_libc_type
5123
5124 case $libc_type in
5125     bionic)
5126         add_compat strtod.o strtod=avpriv_strtod
5127         ;;
5128 esac
5129
5130 # hacks for compiler/libc/os combinations
5131
5132 if enabled_all tms470 libc_glibc; then
5133     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
5134     add_cppflags -D__USER_LABEL_PREFIX__=
5135     add_cppflags -D__builtin_memset=memset
5136     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
5137     add_cflags   -pds=48    # incompatible redefinition of macro
5138 fi
5139
5140 if enabled_all ccc libc_glibc; then
5141     add_ldflags -Wl,-z,now  # calls to libots crash without this
5142 fi
5143
5144 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5145     add_cppflags '-I\$(SRC_PATH)/compat/float'
5146
5147 esc(){
5148     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
5149 }
5150
5151 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
5152
5153 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5154
5155 set_default libdir
5156 : ${shlibdir_default:="$libdir"}
5157 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5158
5159 set_default $PATHS_LIST
5160 set_default nm
5161
5162 # we need to build at least one lib type
5163 if ! enabled_any static shared; then
5164     cat <<EOF
5165 At least one library type must be built.
5166 Specify --enable-static to build the static libraries or --enable-shared to
5167 build the shared libraries as well. To only build the shared libraries specify
5168 --disable-static in addition to --enable-shared.
5169 EOF
5170     exit 1
5171 fi
5172
5173 disabled optimizations || check_cflags -fomit-frame-pointer
5174
5175 enable_weak_pic() {
5176     disabled pic && return
5177     enable pic
5178     add_cppflags -DPIC
5179     case "$target_os" in
5180     mingw*|cygwin*)
5181         ;;
5182     *)
5183         add_cflags -fPIC
5184         ;;
5185     esac
5186     add_asflags  -fPIC
5187 }
5188
5189 enabled pic && enable_weak_pic
5190
5191 check_cc <<EOF || die "Symbol mangling check failed."
5192 int ff_extern;
5193 EOF
5194 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5195 extern_prefix=${sym%%ff_extern*}
5196
5197 check_cc <<EOF && enable_weak inline_asm
5198 void foo(void) { __asm__ volatile ("" ::); }
5199 EOF
5200
5201 _restrict=
5202 for restrict_keyword in restrict __restrict__ __restrict; do
5203     check_cc <<EOF && _restrict=$restrict_keyword && break
5204 void foo(char * $restrict_keyword p);
5205 EOF
5206 done
5207
5208 check_cc <<EOF && enable pragma_deprecated
5209 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
5210 EOF
5211
5212 check_cc <<EOF && enable attribute_packed
5213 struct { int x; } __attribute__((packed)) x;
5214 EOF
5215
5216 check_cc <<EOF && enable attribute_may_alias
5217 union { int x; } __attribute__((may_alias)) x;
5218 EOF
5219
5220 check_cc <<EOF || die "endian test failed"
5221 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5222 EOF
5223 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5224
5225 if ! enabled ppc64 || enabled bigendian; then
5226     disable vsx
5227 fi
5228
5229 check_gas() {
5230     log "check_gas using '$as' as AS"
5231     # :vararg is used on aarch64, arm and ppc altivec
5232     check_as <<EOF || return 1
5233 .macro m n, y:vararg=0
5234 \n: .int \y
5235 .endm
5236 m x
5237 EOF
5238     # .altmacro is only used in arm asm
5239     ! enabled arm || check_as <<EOF || return 1
5240 .altmacro
5241 EOF
5242     enable gnu_as
5243     return 0
5244 }
5245
5246 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5247     nogas=:
5248     enabled_any arm aarch64 && nogas=die
5249     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5250     as_noop=-v
5251
5252     case $as_type in
5253         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5254         gcc)  gaspp_as_type=gas ;;
5255         *)    gaspp_as_type=$as_type ;;
5256     esac
5257
5258     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5259
5260     test "${as#*gas-preprocessor.pl}" != "$as" ||
5261     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5262         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5263
5264     if ! check_gas ; then
5265         as=${gas:=$as}
5266         check_gas || \
5267             $nogas "GNU assembler not found, install/update gas-preprocessor"
5268     fi
5269
5270     check_as <<EOF && enable as_func
5271 .func test
5272 .endfunc
5273 EOF
5274 fi
5275
5276 check_inline_asm inline_asm_labels '"1:\n"'
5277
5278 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5279
5280 if enabled aarch64; then
5281     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5282     # internal assembler in clang 3.3 does not support this instruction
5283     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5284     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5285
5286     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5287
5288 elif enabled alpha; then
5289
5290     check_cflags -mieee
5291
5292 elif enabled arm; then
5293
5294     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
5295
5296     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
5297 float func(float a, float b){ return a+b; }
5298 EOF
5299
5300     enabled thumb && check_cflags -mthumb || check_cflags -marm
5301
5302     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
5303         enable vfp_args
5304     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5305         enable vfp_args
5306     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5307         case "${cross_prefix:-$cc}" in
5308             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
5309             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
5310 __asm__ (".eabi_attribute 28, 1");
5311 int main(void) { return 0; }
5312 EOF
5313         esac
5314         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5315     fi
5316
5317     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5318     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5319     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5320     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5321     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5322     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5323     enabled setend  && check_insn setend  'setend be'
5324
5325     [ $target_os = linux ] || [ $target_os = android ] ||
5326         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5327             $ARCH_EXT_LIST_ARM
5328
5329     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5330
5331     check_as <<EOF && enable as_dn_directive
5332 ra .dn d0.i16
5333 .unreq ra
5334 EOF
5335     check_as <<EOF && enable as_fpu_directive
5336 .fpu neon
5337 EOF
5338
5339     # llvm's integrated assembler supports .object_arch from llvm 3.5
5340     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
5341 .object_arch armv4
5342 EOF
5343
5344     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5345
5346 elif enabled mips; then
5347
5348     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5349     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5350     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5351
5352     # Enable minimum ISA based on selected options
5353     if enabled mips64; then
5354         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5355         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5356         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5357     else
5358         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5359         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5360         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5361         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5362     fi
5363
5364     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5365     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5366     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
5367     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5368     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5369
5370 elif enabled parisc; then
5371
5372     if enabled gcc; then
5373         case $($cc -dumpversion) in
5374             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5375         esac
5376     fi
5377
5378 elif enabled ppc; then
5379
5380     enable local_aligned_8 local_aligned_16 local_aligned_32
5381
5382     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5383     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5384     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5385     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5386
5387     # AltiVec flags: The FSF version of GCC differs from the Apple version
5388     if enabled altivec; then
5389         check_cflags -maltivec -mabi=altivec &&
5390         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
5391         check_cflags -faltivec
5392
5393         # check if our compiler supports Motorola AltiVec C API
5394         check_cc <<EOF || disable altivec
5395 $inc_altivec_h
5396 int main(void) {
5397     vector signed int v1 = (vector signed int) { 0 };
5398     vector signed int v2 = (vector signed int) { 1 };
5399     v1 = vec_add(v1, v2);
5400     return 0;
5401 }
5402 EOF
5403
5404         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5405     fi
5406
5407     if enabled vsx; then
5408         check_cflags -mvsx &&
5409         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
5410     fi
5411
5412     if enabled power8; then
5413         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
5414     fi
5415
5416 elif enabled x86; then
5417
5418     check_builtin rdtsc    intrin.h   "__rdtsc()"
5419     check_builtin mm_empty mmintrin.h "_mm_empty()"
5420
5421     enable local_aligned_8 local_aligned_16 local_aligned_32
5422
5423     # check whether EBP is available on x86
5424     # As 'i' is stored on the stack, this program will crash
5425     # if the base pointer is used to access it because the
5426     # base pointer is cleared in the inline assembly code.
5427     check_exec_crash <<EOF && enable ebp_available
5428 volatile int i=0;
5429 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5430 return i;
5431 EOF
5432
5433     # check whether EBX is available on x86
5434     check_inline_asm ebx_available '""::"b"(0)' &&
5435         check_inline_asm ebx_available '"":::"%ebx"'
5436
5437     # check whether xmm clobbers are supported
5438     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5439
5440     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5441         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5442
5443     # check whether binutils is new enough to compile SSSE3/MMXEXT
5444     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5445     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5446
5447     if ! disabled_any asm mmx yasm; then
5448         if check_cmd $yasmexe --version; then
5449             enabled x86_64 && yasm_extra="-m amd64"
5450             yasm_debug="-g dwarf2"
5451         elif check_cmd nasm -v; then
5452             yasmexe=nasm
5453             yasm_debug="-g -F dwarf"
5454             if enabled x86_64; then
5455                 case "$objformat" in
5456                     elf)   objformat=elf64 ;;
5457                     win32) objformat=win64 ;;
5458                 esac
5459             fi
5460         fi
5461
5462         YASMFLAGS="-f $objformat $yasm_extra"
5463         enabled pic               && append YASMFLAGS "-DPIC"
5464         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
5465         case "$objformat" in
5466             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
5467         esac
5468
5469         check_yasm "movbe ecx, [5]" && enable yasm ||
5470             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
5471         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
5472         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
5473         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
5474         check_yasm "CPU amdnop" || disable cpunop
5475     fi
5476
5477     case "$cpu" in
5478         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5479             disable fast_clz
5480         ;;
5481     esac
5482
5483 fi
5484
5485 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
5486
5487 check_ldflags -Wl,--as-needed
5488 check_ldflags -Wl,-z,noexecstack
5489
5490 if check_func dlopen && check_func dlsym; then
5491     ldl=
5492 elif check_func dlopen -ldl && check_func dlsym -ldl; then
5493     ldl=-ldl
5494 fi
5495
5496 avisynth_demuxer_extralibs='$ldl'
5497 cuda_extralibs='$ldl'
5498 decklink_outdev_extralibs="$decklink_outdev_extralibs $ldl"
5499 decklink_indev_extralibs="$decklink_indev_extralibs $ldl"
5500 frei0r_filter_extralibs='$ldl'
5501 frei0r_src_filter_extralibs='$ldl'
5502 ladspa_filter_extralibs='$ldl'
5503 nvenc_extralibs='$ldl'
5504 coreimage_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5505 coreimagesrc_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5506
5507 if ! disabled network; then
5508     check_func getaddrinfo $network_extralibs
5509     check_func inet_aton $network_extralibs
5510
5511     check_type netdb.h "struct addrinfo"
5512     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5513     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5514     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5515     check_type poll.h "struct pollfd"
5516     check_type netinet/sctp.h "struct sctp_event_subscribe"
5517     check_struct "sys/socket.h" "struct msghdr" msg_flags
5518     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5519     check_type netinet/in.h "struct sockaddr_in6"
5520     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5521     check_type "sys/types.h sys/socket.h" socklen_t
5522
5523     # Prefer arpa/inet.h over winsock2
5524     if check_header arpa/inet.h ; then
5525         check_func closesocket
5526     elif check_header winsock2.h ; then
5527         check_func_headers winsock2.h closesocket -lws2 &&
5528             network_extralibs="-lws2" ||
5529         { check_func_headers winsock2.h closesocket -lws2_32 &&
5530             network_extralibs="-lws2_32"; } || disable winsock2_h network
5531         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5532
5533         check_type ws2tcpip.h socklen_t
5534         check_type ws2tcpip.h "struct addrinfo"
5535         check_type ws2tcpip.h "struct group_source_req"
5536         check_type ws2tcpip.h "struct ip_mreq_source"
5537         check_type ws2tcpip.h "struct ipv6_mreq"
5538         check_type winsock2.h "struct pollfd"
5539         check_struct winsock2.h "struct sockaddr" sa_len
5540         check_type ws2tcpip.h "struct sockaddr_in6"
5541         check_type ws2tcpip.h "struct sockaddr_storage"
5542     else
5543         disable network
5544     fi
5545 fi
5546
5547 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5548 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5549 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5550 check_builtin sarestart signal.h "SA_RESTART"
5551 check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" -lpthread
5552 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5553 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5554 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5555 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5556
5557 case "$custom_allocator" in
5558     jemalloc)
5559         # jemalloc by default does not use a prefix
5560         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5561     ;;
5562     tcmalloc)
5563         require_pkg_config libtcmalloc gperftools/tcmalloc.h tc_malloc
5564         malloc_prefix=tc_
5565     ;;
5566 esac
5567
5568 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5569 check_func  ${malloc_prefix}memalign            && enable memalign
5570 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5571
5572 check_func  access
5573 check_func_headers stdlib.h arc4random
5574 check_func_headers time.h clock_gettime ||
5575     { check_lib time.h clock_gettime -lrt && LIBRT="-lrt"; }
5576 check_func  fcntl
5577 check_func  fork
5578 check_func  gethrtime
5579 check_func  getopt
5580 check_func  getrusage
5581 check_func  gettimeofday
5582 check_func  isatty
5583 check_func  mach_absolute_time
5584 check_func  mkstemp
5585 check_func  mmap
5586 check_func  mprotect
5587 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5588 check_func_headers time.h nanosleep ||
5589     { check_lib time.h nanosleep -lrt && LIBRT="-lrt"; }
5590 check_func  sched_getaffinity
5591 check_func  setrlimit
5592 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5593 check_func  strerror_r
5594 check_func  sysconf
5595 check_func  sysctl
5596 check_func  usleep
5597
5598 check_func_headers conio.h kbhit
5599 check_func_headers io.h setmode
5600 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5601 check_func_headers stdlib.h getenv
5602 check_func_headers sys/stat.h lstat
5603
5604 check_func_headers windows.h CoTaskMemFree -lole32
5605 check_func_headers windows.h GetProcessAffinityMask
5606 check_func_headers windows.h GetProcessTimes
5607 check_func_headers windows.h GetSystemTimeAsFileTime
5608 check_func_headers windows.h LoadLibrary
5609 check_func_headers windows.h MapViewOfFile
5610 check_func_headers windows.h PeekNamedPipe
5611 check_func_headers windows.h SetConsoleTextAttribute
5612 check_func_headers windows.h SetConsoleCtrlHandler
5613 check_func_headers windows.h Sleep
5614 check_func_headers windows.h VirtualAlloc
5615 check_struct windows.h "CONDITION_VARIABLE" Ptr
5616 check_func_headers glob.h glob
5617 enabled xlib &&
5618     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5619
5620 check_header AudioToolbox/AudioToolbox.h
5621 check_header direct.h
5622 check_header dirent.h
5623 check_header dlfcn.h
5624 check_header d3d11.h
5625 check_header dxva.h
5626 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5627 check_header io.h
5628 check_header libcrystalhd/libcrystalhd_if.h
5629 check_header mach/mach_time.h
5630 check_header malloc.h
5631 check_header net/udplite.h
5632 check_header poll.h
5633 check_header sys/mman.h
5634 check_header sys/param.h
5635 check_header sys/resource.h
5636 check_header sys/select.h
5637 check_header sys/time.h
5638 check_header sys/un.h
5639 check_header termios.h
5640 check_header unistd.h
5641 check_header valgrind/valgrind.h
5642 check_header vdpau/vdpau.h
5643 check_header vdpau/vdpau_x11.h
5644 check_header VideoDecodeAcceleration/VDADecoder.h
5645 check_header VideoToolbox/VideoToolbox.h
5646 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5647 enabled videotoolbox && check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferColorPrimaries_ITU_R_2020 -framework CoreVideo
5648 check_header windows.h
5649 check_header X11/extensions/XvMClib.h
5650 check_header asm/types.h
5651
5652 # it seems there are versions of clang in some distros that try to use the
5653 # gcc headers, which explodes for stdatomic
5654 # so we also check that atomics actually work here
5655 check_builtin stdatomic_h stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0)"
5656
5657 check_lib "windows.h shellapi.h" CommandLineToArgvW   -lshell32
5658 check_lib "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
5659 check_lib "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
5660
5661 check_lib "CoreServices/CoreServices.h" UTGetOSTypeFromString "-framework CoreServices"
5662
5663 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5664
5665 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5666 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5667 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5668 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5669 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5670
5671 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
5672 check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
5673 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
5674 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
5675 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5676 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5677 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
5678 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
5679
5680 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5681
5682 check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt
5683
5684 if ! disabled w32threads && ! enabled pthreads; then
5685     check_func_headers "windows.h process.h" _beginthreadex &&
5686         enable w32threads || disable w32threads
5687     if ! enabled w32threads && enabled winrt; then
5688         check_func_headers "windows.h" CreateThread &&
5689             enable w32threads || disable w32threads
5690     fi
5691 fi
5692
5693 # check for some common methods of building with pthread support
5694 # do this before the optional library checks as some of them require pthreads
5695 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5696     enable pthreads
5697     if check_func pthread_join -pthread && check_func pthread_create -pthread; then
5698         add_cflags -pthread
5699         add_extralibs -pthread
5700     elif check_func pthread_join -pthreads && check_func pthread_create -pthreads; then
5701         add_cflags -pthreads
5702         add_extralibs -pthreads
5703     elif check_func pthread_join -ldl -pthread && check_func pthread_create -ldl -pthread; then
5704         add_cflags -ldl -pthread
5705         add_extralibs -ldl -pthread
5706     elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
5707         add_extralibs -lpthreadGC2
5708     elif check_lib pthread.h pthread_join -lpthread && check_lib pthread.h pthread_create -lpthread; then
5709         :
5710     elif ! check_func pthread_join && ! check_func pthread_create; then
5711         disable pthreads
5712     fi
5713     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5714 fi
5715
5716
5717 if enabled pthreads; then
5718   check_func pthread_cancel
5719 fi
5720
5721 enabled pthreads &&
5722     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)"
5723
5724 disabled  zlib || check_lib  zlib.h      zlibVersion    -lz    || disable  zlib
5725 disabled bzlib || check_lib bzlib.h BZ2_bzlibVersion    -lbz2  || disable bzlib
5726 disabled  lzma || check_lib  lzma.h lzma_version_number -llzma || disable lzma
5727
5728 check_lib math.h sin -lm && LIBM="-lm"
5729 disabled crystalhd || check_lib "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd || disable crystalhd
5730
5731 atan2f_args=2
5732 copysign_args=2
5733 hypot_args=2
5734 ldexpf_args=2
5735 powf_args=2
5736
5737 for func in $MATH_FUNCS; do
5738     eval check_mathfunc $func \${${func}_args:-1} $LIBM
5739 done
5740
5741 for func in $COMPLEX_FUNCS; do
5742     eval check_complexfunc $func \${${func}_args:-1}
5743 done
5744
5745 # these are off by default, so fail if requested and not available
5746 enabled avfoundation_indev && { check_header_objcc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
5747 enabled avfoundation_indev && { check_lib CoreGraphics/CoreGraphics.h CGGetActiveDisplayList -framework CoreGraphics ||
5748                                 check_lib ApplicationServices/ApplicationServices.h CGGetActiveDisplayList -framework ApplicationServices; }
5749 enabled cuda              && check_header cuda.h # this is not a dependency
5750 enabled cuvid             && { enabled cuda ||
5751                                die "ERROR: CUVID requires CUDA"; }
5752 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5753 enabled coreimage_filter  && { check_header_objcc QuartzCore/CoreImage.h || disable coreimage_filter; }
5754 enabled coreimagesrc_filter && { check_header_objcc QuartzCore/CoreImage.h || disable coreimagesrc_filter; }
5755 enabled decklink          && { { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; } &&
5756                                { check_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a060100" || die "ERROR: Decklink API version must be >= 10.6.1."; } }
5757 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
5758 enabled gmp               && require gmp gmp.h mpz_export -lgmp
5759 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
5760 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads &&
5761                                check_lib "dlfcn.h" dlopen -ldl || die "ERROR: jni not found"; }
5762 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
5763 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5764 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
5765 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
5766 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
5767 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5768                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
5769                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5770 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
5771 enabled libdc1394         && require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new
5772 enabled libfdk_aac        && { use_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5773                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5774                                  warn "using libfdk without pkg-config"; } }
5775 flite_libs="-lflite_cmu_time_awb -lflite_cmu_us_awb -lflite_cmu_us_kal -lflite_cmu_us_kal16 -lflite_cmu_us_rms -lflite_cmu_us_slt -lflite_usenglish -lflite_cmulex -lflite"
5776 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_libs
5777 enabled fontconfig        && enable libfontconfig
5778 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
5779 enabled libfreetype       && require_libfreetype
5780 enabled libfribidi        && require_pkg_config fribidi fribidi.h fribidi_version_info
5781 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
5782 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5783                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
5784                                done || die "ERROR: libgsm not found"; }
5785 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
5786 enabled libkvazaar        && require_pkg_config "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
5787 enabled libmfx            && require_pkg_config libmfx "mfx/mfxvideo.h" MFXInit
5788 enabled libmodplug        && require_pkg_config libmodplug libmodplug/modplug.h ModPlug_Load
5789 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5790 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
5791 enabled libnpp            && require libnpp npp.h nppGetLibVersion -lnppi -lnppc
5792 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5793 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5794 enabled libopencv         && { check_header opencv2/core/core_c.h &&
5795                                { use_pkg_config opencv opencv2/core/core_c.h cvCreateImageHeader ||
5796                                  require opencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
5797                                require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader; }
5798 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
5799 enabled libopenjpeg       && { { check_lib openjpeg-2.1/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5800                                check_lib openjpeg-2.1/openjpeg.h opj_version -lopenjp2 ||
5801                                { check_lib openjpeg-2.0/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5802                                { check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5803                                { check_lib openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5804                                die "ERROR: libopenjpeg not found"; }
5805 enabled libopenmpt        && require_pkg_config "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create
5806 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
5807 enabled libpulse          && require_pkg_config libpulse pulse/pulseaudio.h pa_context_new
5808 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
5809 enabled librubberband     && require_pkg_config "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new
5810 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
5811 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
5812 enabled libsmbclient      && { use_pkg_config smbclient libsmbclient.h smbc_init ||
5813                                require smbclient libsmbclient.h smbc_init -lsmbclient; }
5814 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy
5815 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr && LIBSOXR="-lsoxr"
5816 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
5817 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
5818 enabled libtesseract      && require_pkg_config tesseract tesseract/capi.h TessBaseAPICreate
5819 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
5820 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
5821                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
5822                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
5823 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
5824 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
5825 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
5826 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
5827
5828 enabled libvpx            && {
5829     enabled libvpx_vp8_decoder && {
5830         use_pkg_config "vpx >= 0.9.1" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
5831             check_lib "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
5832                 die "ERROR: libvpx decoder version must be >=0.9.1";
5833     }
5834     enabled libvpx_vp8_encoder && {
5835         use_pkg_config "vpx >= 0.9.7" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
5836             check_lib "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
5837                 die "ERROR: libvpx encoder version must be >=0.9.7";
5838     }
5839     enabled libvpx_vp9_decoder && {
5840         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
5841             check_lib "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx ||
5842                 disable libvpx_vp9_decoder;
5843     }
5844     enabled libvpx_vp9_encoder && {
5845         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
5846             check_lib "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx ||
5847                 disable libvpx_vp9_encoder;
5848     }
5849     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
5850         die "libvpx enabled but no supported decoders found"
5851     fi
5852 }
5853
5854 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
5855 enabled libwebp           && {
5856     enabled libwebp_encoder      && require_pkg_config "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
5857     enabled libwebp_anim_encoder && { use_pkg_config "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit || disable libwebp_anim_encoder; } }
5858 enabled libx264           && { use_pkg_config x264 "stdint.h x264.h" x264_encoder_encode ||
5859                                { require libx264 "stdint.h x264.h" x264_encoder_encode -lx264 &&
5860                                  warn "using libx264 without pkg-config"; } } &&
5861                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
5862                                die "ERROR: libx264 must be installed and version must be >= 0.118."; } &&
5863                              { check_cpp_condition x264.h "X264_MPEG2" &&
5864                                enable libx262; }
5865 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
5866                              { check_cpp_condition x265.h "X265_BUILD >= 68" ||
5867                                die "ERROR: libx265 version must be >= 68."; }
5868 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode -lxavs
5869 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
5870 enabled libzimg           && require_pkg_config "zimg >= 2.3.0" zimg.h zimg_get_api_version
5871 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
5872 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi &&
5873                              { check_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
5874                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
5875 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
5876 enabled mmal              && { check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
5877                                { ! enabled cross_compile &&
5878                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
5879                                  add_ldflags -L/opt/vc/lib/ &&
5880                                  check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
5881                                die "ERROR: mmal not found" &&
5882                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
5883 enabled netcdf            && require_pkg_config netcdf netcdf.h nc_inq_libvers
5884 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
5885                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
5886                                die "ERROR: openal not found"; } &&
5887                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
5888                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
5889 enabled opencl            && { check_lib OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
5890                                check_lib CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
5891                                die "ERROR: opencl not found"; } &&
5892                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
5893                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
5894                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
5895 enabled opengl            && { check_lib GL/glx.h glXGetProcAddress "-lGL" ||
5896                                check_lib windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
5897                                check_lib OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
5898                                check_lib ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
5899                                die "ERROR: opengl not found."
5900                              }
5901 enabled omx_rpi           && { check_header OMX_Core.h ||
5902                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_header OMX_Core.h ; } ||
5903                                die "ERROR: OpenMAX IL headers not found"; }
5904 enabled omx               && { check_header OMX_Core.h || die "ERROR: OpenMAX IL headers not found"; }
5905 enabled openssl           && { use_pkg_config openssl openssl/ssl.h OPENSSL_init_ssl ||
5906                                use_pkg_config openssl openssl/ssl.h SSL_library_init ||
5907                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
5908                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
5909                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
5910                                die "ERROR: openssl not found"; }
5911 enabled qtkit_indev      && { check_header_objcc QTKit/QTKit.h || disable qtkit_indev; }
5912
5913 if enabled gcrypt; then
5914     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
5915     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
5916         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
5917         gcrypt_libs=$("${GCRYPT_CONFIG}" --libs)
5918         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_libs ||
5919             die "ERROR: gcrypt not found"
5920         add_cflags $gcrypt_cflags && add_extralibs $gcrypt_libs
5921     else
5922         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
5923     fi
5924 fi
5925
5926 disabled sdl && disable sdl2
5927 if ! disabled sdl2; then
5928     SDL2_CONFIG="${cross_prefix}sdl2-config"
5929     if check_pkg_config sdl2 SDL_events.h SDL_PollEvent; then
5930         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
5931         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
5932         check_func SDL_Init $sdl2_libs $sdl2_cflags && enable sdl2
5933     else
5934       if "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
5935         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
5936         sdl2_libs=$("${SDL2_CONFIG}" --libs)
5937         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
5938         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
5939         check_func SDL_Init $sdl2_libs $sdl2_cflags && enable sdl2
5940       fi
5941     fi
5942     if test $target_os = "mingw32"; then
5943         sdl2_libs="$sdl2_libs -mconsole"
5944     fi
5945 fi
5946 enabled sdl2 && enable sdl && add_cflags $sdl2_cflags && add_extralibs $sdl2_libs
5947
5948 disabled securetransport || { check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5949     check_lib "Security/SecureTransport.h Security/Security.h" "SSLCreateContext SecItemImport" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5950     enable securetransport; }
5951
5952 disabled schannel || { check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
5953                        check_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" && enable schannel && add_extralibs -lsecur32; }
5954
5955 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
5956 enabled makeinfo \
5957     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
5958     && enable makeinfo_html || disable makeinfo_html
5959 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
5960 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
5961 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
5962 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
5963
5964 check_header linux/fb.h
5965 check_header linux/videodev.h
5966 check_header linux/videodev2.h
5967 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5968
5969 check_header sys/videoio.h
5970 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5971
5972 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
5973 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
5974 # w32api 3.12 had it defined wrong
5975 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
5976
5977 check_type "dshow.h" IBaseFilter
5978
5979 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
5980 { check_header dev/bktr/ioctl_meteor.h &&
5981   check_header dev/bktr/ioctl_bt848.h; } ||
5982 { check_header machine/ioctl_meteor.h &&
5983   check_header machine/ioctl_bt848.h; } ||
5984 { check_header dev/video/meteor/ioctl_meteor.h &&
5985   check_header dev/video/bktr/ioctl_bt848.h; } ||
5986 check_header dev/ic/bt8xx.h
5987
5988 check_header sndio.h
5989 if check_struct sys/soundcard.h audio_buf_info bytes; then
5990     enable_safe sys/soundcard.h
5991 else
5992     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
5993     #include <sys/soundcard.h>
5994     audio_buf_info abc;
5995 EOF
5996 fi
5997 check_header soundcard.h
5998
5999 enabled_any alsa_indev alsa_outdev &&
6000     check_lib alsa/asoundlib.h snd_pcm_htimestamp -lasound
6001
6002 enabled jack_indev && check_lib jack/jack.h jack_client_open -ljack &&
6003     check_func jack_port_get_latency_range -ljack
6004
6005 enabled_any sndio_indev sndio_outdev && check_lib sndio.h sio_open -lsndio
6006
6007 if enabled libcdio; then
6008     check_lib "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6009     check_lib "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6010     die "ERROR: No usable libcdio/cdparanoia found"
6011 fi
6012
6013 if ! disabled libxcb; then
6014     check_pkg_config "xcb >= 1.4" xcb/xcb.h xcb_connect || {
6015         enabled libxcb && die "ERROR: libxcb >= 1.4 not found";
6016     } && enable libxcb
6017
6018 if enabled libxcb; then
6019     disabled libxcb_shm || {
6020         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
6021             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
6022         } && check_header sys/shm.h && enable libxcb_shm; }
6023
6024     disabled libxcb_xfixes || {
6025         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
6026             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
6027         } && enable libxcb_xfixes; }
6028
6029     disabled libxcb_shape || {
6030         check_pkg_config xcb-shape xcb/shape.h xcb_shape_get_rectangles || {
6031             enabled libxcb_shape && die "ERROR: libxcb_shape not found";
6032         } && enable libxcb_shape; }
6033
6034     add_cflags $xcb_cflags $xcb_shm_cflags $xcb_xfixes_cflags $xcb_shape_cflags
6035     add_extralibs $xcb_libs $xcb_shm_libs $xcb_xfixes_libs $xcb_shape_libs
6036 fi
6037 fi
6038
6039 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6040
6041 enabled dxva2api_h &&
6042     check_cc <<EOF && enable dxva2api_cobj
6043 #define _WIN32_WINNT 0x0600
6044 #define COBJMACROS
6045 #include <windows.h>
6046 #include <d3d9.h>
6047 #include <dxva2api.h>
6048 int main(void) { IDirectXVideoDecoder *o = NULL; IDirectXVideoDecoder_Release(o); return 0; }
6049 EOF
6050
6051 enabled vaapi &&
6052     check_lib va/va.h vaInitialize -lva ||
6053     disable vaapi
6054
6055 enabled vaapi &&
6056     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
6057     disable vaapi
6058
6059 enabled vaapi &&
6060     check_lib "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm &&
6061     enable vaapi_drm
6062
6063 enabled vaapi &&
6064     check_lib "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 -lX11 &&
6065     enable vaapi_x11
6066
6067 enabled vdpau &&
6068     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
6069     disable vdpau
6070
6071 enabled vdpau &&
6072     check_lib "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11 &&
6073     enable vdpau_x11
6074
6075 if enabled x86; then
6076     case $target_os in
6077         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6078             ;;
6079         *)
6080             disable cuda cuvid nvenc
6081             ;;
6082     esac
6083 else
6084     disable cuda cuvid nvenc
6085 fi
6086
6087 enabled nvenc &&
6088     check_cc -I$source_path <<EOF || disable nvenc
6089 #include "compat/nvenc/nvEncodeAPI.h"
6090 NV_ENCODE_API_FUNCTION_LIST flist;
6091 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6092 int main(void) { return 0; }
6093 EOF
6094
6095 # Funny iconv installations are not unusual, so check it after all flags have been set
6096 disabled iconv || check_func_headers iconv.h iconv || check_lib iconv.h iconv -liconv || disable iconv
6097
6098 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6099
6100 # add some useful compiler flags if supported
6101 check_cflags -Wdeclaration-after-statement
6102 check_cflags -Wall
6103 check_cflags -Wdisabled-optimization
6104 check_cflags -Wpointer-arith
6105 check_cflags -Wredundant-decls
6106 check_cflags -Wwrite-strings
6107 check_cflags -Wtype-limits
6108 check_cflags -Wundef
6109 check_cflags -Wmissing-prototypes
6110 check_cflags -Wno-pointer-to-int-cast
6111 check_cflags -Wstrict-prototypes
6112 check_cflags -Wempty-body
6113
6114 if enabled extra_warnings; then
6115     check_cflags -Wcast-qual
6116     check_cflags -Wextra
6117     check_cflags -Wpedantic
6118 fi
6119
6120 check_disable_warning(){
6121     warning_flag=-W${1#-Wno-}
6122     test_cflags $warning_flag && add_cflags $1
6123 }
6124
6125 check_disable_warning -Wno-parentheses
6126 check_disable_warning -Wno-switch
6127 check_disable_warning -Wno-format-zero-length
6128 check_disable_warning -Wno-pointer-sign
6129 check_disable_warning -Wno-unused-const-variable
6130
6131 check_disable_warning_headers(){
6132     warning_flag=-W${1#-Wno-}
6133     test_cflags $warning_flag && add_cflags_headers $1
6134 }
6135
6136 check_disable_warning_headers -Wno-deprecated-declarations
6137 check_disable_warning_headers -Wno-unused-variable
6138
6139 # add some linker flags
6140 check_ldflags -Wl,--warn-common
6141 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6142 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
6143 enabled rpath && add_ldlibflags -Wl,-rpath,$libdir
6144 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6145
6146 # add some strip flags
6147 # -wN '..@*' is more selective than -x, but not available everywhere.
6148 check_stripflags -wN \'..@*\' || check_stripflags -x
6149
6150 enabled neon_clobber_test &&
6151     check_ldflags -Wl,--wrap,avcodec_open2              \
6152                   -Wl,--wrap,avcodec_decode_audio4      \
6153                   -Wl,--wrap,avcodec_decode_video2      \
6154                   -Wl,--wrap,avcodec_decode_subtitle2   \
6155                   -Wl,--wrap,avcodec_encode_audio2      \
6156                   -Wl,--wrap,avcodec_encode_video2      \
6157                   -Wl,--wrap,avcodec_encode_subtitle    \
6158                   -Wl,--wrap,avcodec_send_packet        \
6159                   -Wl,--wrap,avcodec_receive_packet     \
6160                   -Wl,--wrap,avcodec_send_frame         \
6161                   -Wl,--wrap,avcodec_receive_frame      \
6162                   -Wl,--wrap,swr_convert                \
6163                   -Wl,--wrap,avresample_convert ||
6164     disable neon_clobber_test
6165
6166 enabled xmm_clobber_test &&
6167     check_ldflags -Wl,--wrap,avcodec_open2              \
6168                   -Wl,--wrap,avcodec_decode_audio4      \
6169                   -Wl,--wrap,avcodec_decode_video2      \
6170                   -Wl,--wrap,avcodec_decode_subtitle2   \
6171                   -Wl,--wrap,avcodec_encode_audio2      \
6172                   -Wl,--wrap,avcodec_encode_video2      \
6173                   -Wl,--wrap,avcodec_encode_subtitle    \
6174                   -Wl,--wrap,avcodec_send_packet        \
6175                   -Wl,--wrap,avcodec_receive_packet     \
6176                   -Wl,--wrap,avcodec_send_frame         \
6177                   -Wl,--wrap,avcodec_receive_frame      \
6178                   -Wl,--wrap,swr_convert                \
6179                   -Wl,--wrap,avresample_convert         \
6180                   -Wl,--wrap,sws_scale ||
6181     disable xmm_clobber_test
6182
6183 check_ld "cc" <<EOF && enable proper_dce
6184 extern const int array[512];
6185 static inline int func(void) { return array[0]; }
6186 int main(void) { return 0; }
6187 EOF
6188
6189 if enabled proper_dce; then
6190     echo "X { local: *; };" > $TMPV
6191     if test_ldflags -Wl,${version_script},$TMPV; then
6192         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6193         check_cc <<EOF && enable symver_asm_label
6194 void ff_foo(void) __asm__ ("av_foo@VERSION");
6195 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6196 EOF
6197         check_cc <<EOF && enable symver_gnu_asm
6198 __asm__(".symver ff_foo,av_foo@VERSION");
6199 void ff_foo(void) {}
6200 EOF
6201     fi
6202 fi
6203
6204 if [ -z "$optflags" ]; then
6205     if enabled small; then
6206         optflags=$cflags_size
6207     elif enabled optimizations; then
6208         optflags=$cflags_speed
6209     else
6210         optflags=$cflags_noopt
6211     fi
6212 fi
6213
6214 check_optflags(){
6215     check_cflags "$@"
6216     enabled lto && check_ldflags "$@"
6217 }
6218
6219
6220 if enabled lto; then
6221     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6222     check_cflags  -flto
6223     check_ldflags -flto $cpuflags
6224     disable inline_asm_direct_symbol_refs
6225 fi
6226
6227 check_optflags $optflags
6228 check_optflags -fno-math-errno
6229 check_optflags -fno-signed-zeros
6230
6231 enabled ftrapv && check_cflags -ftrapv
6232
6233 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6234 int x;
6235 EOF
6236
6237
6238 if enabled icc; then
6239     # Just warnings, no remarks
6240     check_cflags -w1
6241     # -wd: Disable following warnings
6242     # 144, 167, 556: -Wno-pointer-sign
6243     # 188: enumerated type mixed with another type
6244     # 1292: attribute "foo" ignored
6245     # 1419: external declaration in primary source file
6246     # 10006: ignoring unknown option -fno-signed-zeros
6247     # 10148: ignoring unknown option -Wno-parentheses
6248     # 10156: ignoring option '-W'; no argument required
6249     # 13200: No EMMS instruction before call to function
6250     # 13203: No EMMS instruction before return from function
6251     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6252     # 11030: Warning unknown option --as-needed
6253     # 10156: ignoring option '-export'; no argument required
6254     check_ldflags -wd10156,11030
6255     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6256     enable ebp_available
6257     # The test above does not test linking
6258     enabled lto && disable symver_asm_label
6259     if enabled x86_32; then
6260         icc_version=$($cc -dumpversion)
6261         test ${icc_version%%.*} -ge 11 &&
6262             check_cflags -falign-stack=maintain-16-byte ||
6263             disable aligned_stack
6264     fi
6265 elif enabled ccc; then
6266     # disable some annoying warnings
6267     add_cflags -msg_disable bitnotint
6268     add_cflags -msg_disable mixfuncvoid
6269     add_cflags -msg_disable nonstandcast
6270     add_cflags -msg_disable unsupieee
6271 elif enabled gcc; then
6272     check_optflags -fno-tree-vectorize
6273     check_cflags -Werror=format-security
6274     check_cflags -Werror=implicit-function-declaration
6275     check_cflags -Werror=missing-prototypes
6276     check_cflags -Werror=return-type
6277     check_cflags -Werror=vla
6278     check_cflags -Wformat
6279     check_cflags -fdiagnostics-color=auto
6280     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6281 elif enabled llvm_gcc; then
6282     check_cflags -mllvm -stack-alignment=16
6283 elif enabled clang; then
6284     check_cflags -mllvm -stack-alignment=16
6285     check_cflags -mstack-alignment=16
6286     check_cflags -Qunused-arguments
6287     check_cflags -Werror=implicit-function-declaration
6288     check_cflags -Werror=missing-prototypes
6289     check_cflags -Werror=return-type
6290 elif enabled cparser; then
6291     add_cflags -Wno-missing-variable-declarations
6292     add_cflags -Wno-empty-statement
6293 elif enabled armcc; then
6294     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6295     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6296     # 2523: use of inline assembly is deprecated
6297     add_cflags -W${armcc_opt},--diag_suppress=2523
6298     add_cflags -W${armcc_opt},--diag_suppress=1207
6299     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6300     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6301     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6302     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6303 elif enabled tms470; then
6304     add_cflags -pds=824 -pds=837
6305     disable inline_asm
6306 elif enabled pathscale; then
6307     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6308 elif enabled_any msvc icl; then
6309     enabled x86_32 && disable aligned_stack
6310     enabled_all x86_32 debug && add_cflags -Oy-
6311     enabled debug && add_ldflags -debug
6312     enable pragma_deprecated
6313     if enabled icl; then
6314         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6315         # (correctly) on icl 13.x.
6316         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6317             add_cflags -Qansi-alias
6318         # Some inline asm is not compilable in debug
6319         if enabled debug; then
6320             disable ebp_available
6321             disable ebx_available
6322         fi
6323     fi
6324     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6325     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
6326     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6327     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6328     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6329     # MSVC 2013 and newer can handle it fine.
6330     # If this declspec fails, force including stdlib.h before the restrict redefinition
6331     # happens in config.h.
6332     if [ $_restrict != restrict ]; then
6333         check_cc <<EOF || add_cflags -FIstdlib.h
6334 __declspec($_restrict) void* foo(int);
6335 EOF
6336     fi
6337     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6338     # Issue has been fixed in MSVC v19.00.24218.
6339     check_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6340         check_cflags -d2SSAOptimizer-
6341     # enable utf-8 source processing on VS2015 U2 and newer
6342     check_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6343         add_cflags -utf-8
6344 fi
6345
6346 for pfx in "" host_; do
6347     varname=${pfx%_}cc_type
6348     eval "type=\$$varname"
6349     if [ $type = "msvc" ]; then
6350         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6351 static inline int foo(int a) { return a; }
6352 EOF
6353     fi
6354 done
6355
6356 case $as_type in
6357     clang)
6358         add_asflags -Qunused-arguments
6359     ;;
6360 esac
6361
6362 case $ld_type in
6363     clang)
6364         check_ldflags -Qunused-arguments
6365     ;;
6366 esac
6367
6368 case $target_os in
6369     osf1)
6370         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
6371     ;;
6372 esac
6373
6374 enable frame_thread_encoder
6375
6376 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6377
6378 check_deps $CONFIG_LIST       \
6379            $CONFIG_EXTRA      \
6380            $HAVE_LIST         \
6381            $ALL_COMPONENTS    \
6382
6383 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"
6384
6385
6386 if test $target_os = "haiku"; then
6387     disable memalign
6388     disable posix_memalign
6389 fi
6390
6391 enabled_all dxva2 dxva2api_cobj CoTaskMemFree &&
6392     prepend ffmpeg_libs $($ldflags_filter "-lole32") &&
6393     enable dxva2_lib
6394
6395 # add_dep lib dep
6396 # -> enable ${lib}_deps_${dep}
6397 # -> add $dep to ${lib}_deps only once
6398 add_dep() {
6399     lib=$1
6400     dep=$2
6401     enabled "${lib}_deps_${dep}" && return 0
6402     enable  "${lib}_deps_${dep}"
6403     prepend "${lib}_deps" $dep
6404 }
6405
6406 # merge deps lib components
6407 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
6408 merge_deps() {
6409     lib=$1
6410     shift
6411     for comp in $*; do
6412         enabled $comp || continue
6413         eval "dep=\"\$${comp}_deps\""
6414         for d in $dep; do
6415             add_dep $lib $d
6416         done
6417     done
6418 }
6419
6420 merge_deps libavfilter $FILTER_LIST
6421
6422 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6423
6424 for thread in $THREADS_LIST; do
6425     if enabled $thread; then
6426         test -n "$thread_type" &&
6427             die "ERROR: Only one thread type must be selected." ||
6428             thread_type="$thread"
6429     fi
6430 done
6431
6432 if disabled stdatomic_h; then
6433     if enabled atomics_gcc; then
6434         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6435     elif enabled atomics_win32; then
6436         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6437     elif enabled atomics_suncc; then
6438         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6439     elif enabled pthreads; then
6440         add_compat atomics/pthread/stdatomic.o
6441         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6442     else
6443         enabled threads && die "Threading is enabled, but no atomics are available"
6444         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6445     fi
6446 fi
6447
6448 # Check if requested libraries were found.
6449 for lib in $AUTODETECT_LIBS; do
6450     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6451 done
6452
6453 enabled zlib && add_cppflags -DZLIB_CONST
6454
6455 # conditional library dependencies, in linking order
6456 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6457 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6458 enabled aresample_filter    && prepend avfilter_deps "swresample"
6459 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6460 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6461 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6462 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6463 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6464 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6465 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6466 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6467 enabled pan_filter          && prepend avfilter_deps "swresample"
6468 enabled pp_filter           && prepend avfilter_deps "postproc"
6469 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6470 enabled resample_filter && prepend avfilter_deps "avresample"
6471 enabled sab_filter          && prepend avfilter_deps "swscale"
6472 enabled scale_filter    && prepend avfilter_deps "swscale"
6473 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6474 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6475 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6476 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6477 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6478 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6479 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6480 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6481 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6482
6483 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6484
6485 enabled opus_decoder    && prepend avcodec_deps "swresample"
6486
6487 expand_deps(){
6488     lib_deps=${1}_deps
6489     eval "deps=\$$lib_deps"
6490     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6491     unique $lib_deps
6492 }
6493
6494 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6495 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6496
6497 map 'expand_deps $v' $LIBRARY_LIST
6498
6499 license="LGPL version 2.1 or later"
6500 if enabled nonfree; then
6501     license="nonfree and unredistributable"
6502 elif enabled gplv3; then
6503     license="GPL version 3 or later"
6504 elif enabled lgplv3; then
6505     license="LGPL version 3 or later"
6506 elif enabled gpl; then
6507     license="GPL version 2 or later"
6508 fi
6509
6510 if test "$quiet" != "yes"; then
6511
6512 echo "install prefix            $prefix"
6513 echo "source path               $source_path"
6514 echo "C compiler                $cc"
6515 echo "C library                 $libc_type"
6516 if test "$host_cc" != "$cc"; then
6517     echo "host C compiler           $host_cc"
6518     echo "host C library            $host_libc_type"
6519 fi
6520 echo "ARCH                      $arch ($cpu)"
6521 if test "$build_suffix" != ""; then
6522     echo "build suffix              $build_suffix"
6523 fi
6524 if test "$progs_suffix" != ""; then
6525     echo "progs suffix              $progs_suffix"
6526 fi
6527 if test "$extra_version" != ""; then
6528     echo "version string suffix     $extra_version"
6529 fi
6530 echo "big-endian                ${bigendian-no}"
6531 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6532 if enabled x86; then
6533     echo "${yasmexe}                      ${yasm-no}"
6534     echo "MMX enabled               ${mmx-no}"
6535     echo "MMXEXT enabled            ${mmxext-no}"
6536     echo "3DNow! enabled            ${amd3dnow-no}"
6537     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6538     echo "SSE enabled               ${sse-no}"
6539     echo "SSSE3 enabled             ${ssse3-no}"
6540     echo "AESNI enabled             ${aesni-no}"
6541     echo "AVX enabled               ${avx-no}"
6542     echo "XOP enabled               ${xop-no}"
6543     echo "FMA3 enabled              ${fma3-no}"
6544     echo "FMA4 enabled              ${fma4-no}"
6545     echo "i686 features enabled     ${i686-no}"
6546     echo "CMOV is fast              ${fast_cmov-no}"
6547     echo "EBX available             ${ebx_available-no}"
6548     echo "EBP available             ${ebp_available-no}"
6549 fi
6550 if enabled aarch64; then
6551     echo "NEON enabled              ${neon-no}"
6552     echo "VFP enabled               ${vfp-no}"
6553 fi
6554 if enabled arm; then
6555     echo "ARMv5TE enabled           ${armv5te-no}"
6556     echo "ARMv6 enabled             ${armv6-no}"
6557     echo "ARMv6T2 enabled           ${armv6t2-no}"
6558     echo "VFP enabled               ${vfp-no}"
6559     echo "NEON enabled              ${neon-no}"
6560     echo "THUMB enabled             ${thumb-no}"
6561 fi
6562 if enabled mips; then
6563     echo "MIPS FPU enabled          ${mipsfpu-no}"
6564     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6565     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6566     echo "MIPS MSA enabled          ${msa-no}"
6567     echo "LOONGSON MMI enabled      ${mmi-no}"
6568 fi
6569 if enabled ppc; then
6570     echo "AltiVec enabled           ${altivec-no}"
6571     echo "VSX enabled               ${vsx-no}"
6572     echo "POWER8 enabled            ${power8-no}"
6573     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6574     echo "dcbzl available           ${dcbzl-no}"
6575 fi
6576 echo "debug symbols             ${debug-no}"
6577 echo "strip symbols             ${stripping-no}"
6578 echo "optimize for size         ${small-no}"
6579 echo "optimizations             ${optimizations-no}"
6580 echo "static                    ${static-no}"
6581 echo "shared                    ${shared-no}"
6582 echo "postprocessing support    ${postproc-no}"
6583 echo "network support           ${network-no}"
6584 echo "threading support         ${thread_type-no}"
6585 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6586 echo "texi2html enabled         ${texi2html-no}"
6587 echo "perl enabled              ${perl-no}"
6588 echo "pod2man enabled           ${pod2man-no}"
6589 echo "makeinfo enabled          ${makeinfo-no}"
6590 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6591 test -n "$random_seed" &&
6592     echo "random seed               ${random_seed}"
6593 echo
6594
6595 echo "External libraries:"
6596 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_in_columns
6597 echo
6598
6599 echo "External libraries providing hardware acceleration:"
6600 print_enabled '' $HWACCEL_LIBRARY_LIST | print_in_columns
6601 echo
6602
6603 echo "Libraries:"
6604 print_enabled '' $LIBRARY_LIST | print_in_columns
6605 echo
6606
6607 echo "Programs:"
6608 print_enabled '' $PROGRAM_LIST | print_in_columns
6609 echo
6610
6611 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6612     echo "Enabled ${type}s:"
6613     eval list=\$$(toupper $type)_LIST
6614     print_enabled '_*' $list | print_in_columns
6615     echo
6616 done
6617
6618 echo "License: $license"
6619
6620 echo "Creating configuration files ..."
6621
6622 fi # test "$quiet" != "yes"
6623
6624 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6625
6626 enabled stripping || strip="echo skipping strip"
6627
6628 config_files="$TMPH config.mak doc/config.texi"
6629
6630 cat > config.mak <<EOF
6631 # Automatically generated by configure - do not modify!
6632 ifndef FFMPEG_CONFIG_MAK
6633 FFMPEG_CONFIG_MAK=1
6634 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6635 prefix=$prefix
6636 LIBDIR=\$(DESTDIR)$libdir
6637 SHLIBDIR=\$(DESTDIR)$shlibdir
6638 INCDIR=\$(DESTDIR)$incdir
6639 BINDIR=\$(DESTDIR)$bindir
6640 DATADIR=\$(DESTDIR)$datadir
6641 DOCDIR=\$(DESTDIR)$docdir
6642 MANDIR=\$(DESTDIR)$mandir
6643 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6644 INSTALL_NAME_DIR=$install_name_dir
6645 SRC_PATH=$source_path
6646 SRC_LINK=$source_link
6647 ifndef MAIN_MAKEFILE
6648 SRC_PATH:=\$(SRC_PATH:.%=..%)
6649 endif
6650 CC_IDENT=$cc_ident
6651 ARCH=$arch
6652 INTRINSICS=$intrinsics
6653 CC=$cc
6654 CXX=$cxx
6655 AS=$as
6656 OBJCC=$objcc
6657 LD=$ld
6658 DEPCC=$dep_cc
6659 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6660 DEPAS=$as
6661 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6662 YASM=$yasmexe
6663 DEPYASM=$yasmexe
6664 AR=$ar
6665 ARFLAGS=$arflags
6666 AR_O=$ar_o
6667 RANLIB=$ranlib
6668 STRIP=$strip
6669 CP=cp -p
6670 LN_S=$ln_s
6671 CPPFLAGS=$CPPFLAGS
6672 CFLAGS=$CFLAGS
6673 CXXFLAGS=$CXXFLAGS
6674 OBJCFLAGS=$OBJCFLAGS
6675 ASFLAGS=$ASFLAGS
6676 AS_C=$AS_C
6677 AS_O=$AS_O
6678 OBJCC_C=$OBJCC_C
6679 OBJCC_E=$OBJCC_E
6680 OBJCC_O=$OBJCC_O
6681 CC_C=$CC_C
6682 CC_E=$CC_E
6683 CC_O=$CC_O
6684 CXX_C=$CXX_C
6685 CXX_O=$CXX_O
6686 LD_O=$LD_O
6687 LD_LIB=$LD_LIB
6688 LD_PATH=$LD_PATH
6689 DLLTOOL=$dlltool
6690 WINDRES=$windres
6691 DEPWINDRES=$dep_cc
6692 DOXYGEN=$doxygen
6693 LDFLAGS=$LDFLAGS
6694 LDEXEFLAGS=$LDEXEFLAGS
6695 LDLIBFLAGS=$LDLIBFLAGS
6696 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
6697 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
6698 YASMFLAGS=$YASMFLAGS
6699 BUILDSUF=$build_suffix
6700 PROGSSUF=$progs_suffix
6701 FULLNAME=$FULLNAME
6702 LIBPREF=$LIBPREF
6703 LIBSUF=$LIBSUF
6704 LIBNAME=$LIBNAME
6705 SLIBPREF=$SLIBPREF
6706 SLIBSUF=$SLIBSUF
6707 EXESUF=$EXESUF
6708 EXTRA_VERSION=$extra_version
6709 CCDEP=$CCDEP
6710 CXXDEP=$CXXDEP
6711 CCDEP_FLAGS=$CCDEP_FLAGS
6712 ASDEP=$ASDEP
6713 ASDEP_FLAGS=$ASDEP_FLAGS
6714 CC_DEPFLAGS=$CC_DEPFLAGS
6715 AS_DEPFLAGS=$AS_DEPFLAGS
6716 HOSTCC=$host_cc
6717 HOSTLD=$host_ld
6718 HOSTCFLAGS=$host_cflags
6719 HOSTCPPFLAGS=$host_cppflags
6720 HOSTEXESUF=$HOSTEXESUF
6721 HOSTLDFLAGS=$host_ldflags
6722 HOSTLIBS=$host_libs
6723 DEPHOSTCC=$host_cc
6724 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
6725 HOSTCCDEP=$HOSTCCDEP
6726 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
6727 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
6728 HOSTCC_C=$HOSTCC_C
6729 HOSTCC_O=$HOSTCC_O
6730 HOSTLD_O=$HOSTLD_O
6731 TARGET_EXEC=$target_exec $target_exec_args
6732 TARGET_PATH=$target_path
6733 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
6734 CFLAGS-ffplay=${sdl2_cflags}
6735 CFLAGS_HEADERS=$CFLAGS_HEADERS
6736 ZLIB=$($ldflags_filter -lz)
6737 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
6738 EXTRALIBS=$extralibs
6739 COMPAT_OBJS=$compat_objs
6740 INSTALL=$install
6741 LIBTARGET=${LIBTARGET}
6742 SLIBNAME=${SLIBNAME}
6743 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
6744 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
6745 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
6746 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
6747 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
6748 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
6749 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
6750 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
6751 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
6752 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
6753 NOREDZONE_FLAGS=$noredzone_flags
6754 EOF
6755
6756 get_version(){
6757     lcname=lib${1}
6758     name=$(toupper $lcname)
6759     file=$source_path/$lcname/version.h
6760     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
6761     enabled raise_major && eval ${name}_VERSION_MAJOR=$((${name}_VERSION_MAJOR+100))
6762     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
6763     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
6764     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
6765     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
6766 }
6767
6768 map 'get_version $v' $LIBRARY_LIST
6769
6770 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> config.mak' $LIBRARY_LIST
6771
6772 print_program_libs(){
6773     eval "program_libs=\$${1}_libs"
6774     eval echo "LIBS-${1}=${program_libs}" >> config.mak
6775 }
6776
6777 map 'print_program_libs $v' $PROGRAM_LIST
6778
6779 cat > $TMPH <<EOF
6780 /* Automatically generated by configure - do not modify! */
6781 #ifndef FFMPEG_CONFIG_H
6782 #define FFMPEG_CONFIG_H
6783 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
6784 #define FFMPEG_LICENSE "$(c_escape $license)"
6785 #define CONFIG_THIS_YEAR 2017
6786 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
6787 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
6788 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
6789 #define av_restrict $_restrict
6790 #define EXTERN_PREFIX "${extern_prefix}"
6791 #define EXTERN_ASM ${extern_prefix}
6792 #define BUILDSUF "$build_suffix"
6793 #define SLIBSUF "$SLIBSUF"
6794 #define HAVE_MMX2 HAVE_MMXEXT
6795 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
6796 EOF
6797
6798 test -n "$assert_level" &&
6799     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
6800
6801 test -n "$malloc_prefix" &&
6802     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
6803
6804 if enabled yasm; then
6805     append config_files $TMPASM
6806     printf '' >$TMPASM
6807 fi
6808
6809 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
6810
6811
6812 mkdir -p doc
6813 mkdir -p tests
6814 mkdir -p tests/api
6815 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
6816
6817 print_config ARCH_   "$config_files" $ARCH_LIST
6818 print_config HAVE_   "$config_files" $HAVE_LIST
6819 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
6820                                      $CONFIG_EXTRA      \
6821                                      $ALL_COMPONENTS    \
6822
6823 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
6824 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
6825
6826 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
6827 cp_if_changed $TMPH config.h
6828 touch .config
6829
6830 enabled yasm && cp_if_changed $TMPASM config.asm
6831
6832 cat > $TMPH <<EOF
6833 /* Generated by ffconf */
6834 #ifndef AVUTIL_AVCONFIG_H
6835 #define AVUTIL_AVCONFIG_H
6836 EOF
6837
6838 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
6839
6840 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
6841
6842 cp_if_changed $TMPH libavutil/avconfig.h
6843
6844 # generate the lists of enabled components
6845 print_enabled_components(){
6846     file=$1
6847     struct_name=$2
6848     name=$3
6849     shift 3
6850     echo "static const $struct_name *$name[] = {" > $TMPH
6851     for c in $*; do
6852         enabled $c && printf "    &ff_%s,\n" $c >> $TMPH
6853     done
6854     echo "    NULL };" >> $TMPH
6855     cp_if_changed $TMPH $file
6856 }
6857
6858 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
6859 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
6860
6861 if test -n "$WARNINGS"; then
6862     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
6863     enabled fatal_warnings && exit 1
6864 fi
6865
6866 # build pkg-config files
6867
6868 lib_version(){
6869     eval printf "\"lib${1}${build_suffix} >= \$LIB$(toupper ${1})_VERSION, \""
6870 }
6871
6872 pkgconfig_generate(){
6873     name=$1
6874     shortname=${name#lib}${build_suffix}
6875     comment=$2
6876     version=$3
6877     libs=$4
6878     requires=$(map 'lib_version $v' $(eval echo \$${name#lib}_deps))
6879     requires=${requires%, }
6880     enabled ${name#lib} || return 0
6881     mkdir -p $name
6882     cat <<EOF > $name/$name${build_suffix}.pc
6883 prefix=$prefix
6884 exec_prefix=\${prefix}
6885 libdir=$libdir
6886 includedir=$incdir
6887
6888 Name: $name
6889 Description: $comment
6890 Version: $version
6891 Requires: $(enabled shared || echo $requires)
6892 Requires.private: $(enabled shared && echo $requires)
6893 Conflicts:
6894 Libs: -L\${libdir} $(enabled rpath && echo "-Wl,-rpath,\${libdir}") -l${shortname} $(enabled shared || echo $libs)
6895 Libs.private: $(enabled shared && echo $libs)
6896 Cflags: -I\${includedir}
6897 EOF
6898
6899 mkdir -p doc/examples/pc-uninstalled
6900 includedir=${source_path}
6901 [ "$includedir" = . ] && includedir="\${pcfiledir}/../../.."
6902     cat <<EOF > doc/examples/pc-uninstalled/${name}-uninstalled.pc
6903 prefix=
6904 exec_prefix=
6905 libdir=\${pcfiledir}/../../../$name
6906 includedir=${includedir}
6907
6908 Name: $name
6909 Description: $comment
6910 Version: $version
6911 Requires: $requires
6912 Conflicts:
6913 Libs: -L\${libdir} -Wl,-rpath,\${libdir} -l${shortname} $(enabled shared || echo $libs)
6914 Cflags: -I\${includedir}
6915 EOF
6916 }
6917
6918 pkgconfig_generate libavutil     "FFmpeg utility library"               "$LIBAVUTIL_VERSION"     "$LIBRT $LIBM"
6919 pkgconfig_generate libavcodec    "FFmpeg codec library"                 "$LIBAVCODEC_VERSION"    "$extralibs"
6920 pkgconfig_generate libavformat   "FFmpeg container format library"      "$LIBAVFORMAT_VERSION"   "$extralibs"
6921 pkgconfig_generate libavdevice   "FFmpeg device handling library"       "$LIBAVDEVICE_VERSION"   "$extralibs"
6922 pkgconfig_generate libavfilter   "FFmpeg audio/video filtering library" "$LIBAVFILTER_VERSION"   "$extralibs"
6923 pkgconfig_generate libpostproc   "FFmpeg postprocessing library"        "$LIBPOSTPROC_VERSION"   ""
6924 pkgconfig_generate libavresample "Libav audio resampling library"       "$LIBAVRESAMPLE_VERSION" "$LIBM"
6925 pkgconfig_generate libswscale    "FFmpeg image rescaling library"       "$LIBSWSCALE_VERSION"    "$LIBM"
6926 pkgconfig_generate libswresample "FFmpeg audio resampling library"      "$LIBSWRESAMPLE_VERSION" "$LIBM $LIBSOXR"