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

   1 #!/bin/sh
   2 #
   3 # FFmpeg configure script
   4 #
   5 # Copyright (c) 2000-2002 Fabrice Bellard
   6 # Copyright (c) 2005-2008 Diego Biurrun
   7 # Copyright (c) 2005-2008 Mans Rullgard
   8 #
   9
  10 # Prevent locale nonsense from breaking basic text processing.
  11 LC_ALL=C
  12 export LC_ALL
  13
  14 # make sure we are running under a compatible shell
  15 # try to make this part work with most shells
  16
  17 try_exec(){
  18     echo "Trying shell $1"
  19     type "$1" > /dev/null 2>&1 && exec "$@"
  20 }
  21
  22 unset foo
  23 (: ${foo%%bar}) 2> /dev/null
  24 E1="$?"
  25
  26 (: ${foo?}) 2> /dev/null
  27 E2="$?"
  28
  29 if test "$E1" != 0 || test "$E2" = 0; then
  30     echo "Broken shell detected.  Trying alternatives."
  31     export FF_CONF_EXEC
  32     if test "0$FF_CONF_EXEC" -lt 1; then
  33         FF_CONF_EXEC=1
  34         try_exec bash "$0" "$@"
  35     fi
  36     if test "0$FF_CONF_EXEC" -lt 2; then
  37         FF_CONF_EXEC=2
  38         try_exec ksh "$0" "$@"
  39     fi
  40     if test "0$FF_CONF_EXEC" -lt 3; then
  41         FF_CONF_EXEC=3
  42         try_exec /usr/xpg4/bin/sh "$0" "$@"
  43     fi
  44     echo "No compatible shell script interpreter found."
  45     echo "This configure script requires a POSIX-compatible shell"
  46     echo "such as bash or ksh."
  47     echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
  48     echo "Instead, install a working POSIX-compatible shell."
  49     echo "Disabling this configure test will create a broken FFmpeg."
  50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
  51         echo "This bash version ($BASH_VERSION) is broken on your platform."
  52         echo "Upgrade to a later version if available."
  53     fi
  54     exit 1
  55 fi
  56
  57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
  58
  59 show_help(){
  60     cat <<EOF
  61 Usage: configure [options]
  62 Options: [defaults in brackets after descriptions]
  63
  64 Help options:
  65   --help                   print this message
  66   --quiet                  Suppress showing informative output
  67   --list-decoders          show all available decoders
  68   --list-encoders          show all available encoders
  69   --list-hwaccels          show all available hardware accelerators
  70   --list-demuxers          show all available demuxers
  71   --list-muxers            show all available muxers
  72   --list-parsers           show all available parsers
  73   --list-protocols         show all available protocols
  74   --list-bsfs              show all available bitstream filters
  75   --list-indevs            show all available input devices
  76   --list-outdevs           show all available output devices
  77   --list-filters           show all available filters
  78
  79 Standard options:
  80   --logfile=FILE           log tests and output to FILE [config.log]
  81   --disable-logging        do not log configure debug information
  82   --fatal-warnings         fail if any configure warning is generated
  83   --prefix=PREFIX          install in PREFIX [$prefix_default]
  84   --bindir=DIR             install binaries in DIR [PREFIX/bin]
  85   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
  86   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
  87   --libdir=DIR             install libs in DIR [PREFIX/lib]
  88   --shlibdir=DIR           install shared libs in DIR [LIBDIR]
  89   --incdir=DIR             install includes in DIR [PREFIX/include]
  90   --mandir=DIR             install man page in DIR [PREFIX/share/man]
  91   --pkgconfigdir=DIR       install pkg-config files in DIR [LIBDIR/pkgconfig]
  92   --enable-rpath           use rpath to allow installing libraries in paths
  93                            not part of the dynamic linker search path
  94                            use rpath when linking programs (USE WITH CARE)
  95   --install-name-dir=DIR   Darwin directory name for installed targets
  96
  97 Licensing options:
  98   --enable-gpl             allow use of GPL code, the resulting libs
  99                            and binaries will be under GPL [no]
 100   --enable-version3        upgrade (L)GPL to version 3 [no]
 101   --enable-nonfree         allow use of nonfree code, the resulting libs
 102                            and binaries will be unredistributable [no]
 103
 104 Configuration options:
 105   --disable-static         do not build static libraries [no]
 106   --enable-shared          build shared libraries [no]
 107   --enable-small           optimize for size instead of speed
 108   --disable-runtime-cpudetect disable detecting CPU capabilities at runtime (smaller binary)
 109   --enable-gray            enable full grayscale support (slower color)
 110   --disable-swscale-alpha  disable alpha channel support in swscale
 111   --disable-all            disable building components, libraries and programs
 112   --enable-raise-major     increase major version numbers in sonames [no]
 113
 114 Program options:
 115   --disable-programs       do not build command line programs
 116   --disable-ffmpeg         disable ffmpeg build
 117   --disable-ffplay         disable ffplay build
 118   --disable-ffprobe        disable ffprobe build
 119   --disable-ffserver       disable ffserver build
 120
 121 Documentation options:
 122   --disable-doc            do not build documentation
 123   --disable-htmlpages      do not build HTML documentation pages
 124   --disable-manpages       do not build man documentation pages
 125   --disable-podpages       do not build POD documentation pages
 126   --disable-txtpages       do not build text documentation pages
 127
 128 Component options:
 129   --disable-avdevice       disable libavdevice build
 130   --disable-avcodec        disable libavcodec build
 131   --disable-avformat       disable libavformat build
 132   --disable-swresample     disable libswresample build
 133   --disable-swscale        disable libswscale build
 134   --disable-postproc       disable libpostproc build
 135   --disable-avfilter       disable libavfilter build
 136   --enable-avresample      enable libavresample build [no]
 137   --disable-pthreads       disable pthreads [autodetect]
 138   --disable-w32threads     disable Win32 threads [autodetect]
 139   --disable-os2threads     disable OS/2 threads [autodetect]
 140   --disable-network        disable network support [no]
 141   --disable-dct            disable DCT code
 142   --disable-dwt            disable DWT code
 143   --disable-error-resilience disable error resilience code
 144   --disable-lsp            disable LSP code
 145   --disable-lzo            disable LZO decoder code
 146   --disable-mdct           disable MDCT code
 147   --disable-rdft           disable RDFT code
 148   --disable-fft            disable FFT code
 149   --disable-faan           disable floating point AAN (I)DCT code
 150   --disable-pixelutils     disable pixel utils in libavutil
 151
 152 Individual component options:
 153   --disable-everything     disable all components listed below
 154   --disable-encoder=NAME   disable encoder NAME
 155   --enable-encoder=NAME    enable encoder NAME
 156   --disable-encoders       disable all encoders
 157   --disable-decoder=NAME   disable decoder NAME
 158   --enable-decoder=NAME    enable decoder NAME
 159   --disable-decoders       disable all decoders
 160   --disable-hwaccel=NAME   disable hwaccel NAME
 161   --enable-hwaccel=NAME    enable hwaccel NAME
 162   --disable-hwaccels       disable all hwaccels
 163   --disable-muxer=NAME     disable muxer NAME
 164   --enable-muxer=NAME      enable muxer NAME
 165   --disable-muxers         disable all muxers
 166   --disable-demuxer=NAME   disable demuxer NAME
 167   --enable-demuxer=NAME    enable demuxer NAME
 168   --disable-demuxers       disable all demuxers
 169   --enable-parser=NAME     enable parser NAME
 170   --disable-parser=NAME    disable parser NAME
 171   --disable-parsers        disable all parsers
 172   --enable-bsf=NAME        enable bitstream filter NAME
 173   --disable-bsf=NAME       disable bitstream filter NAME
 174   --disable-bsfs           disable all bitstream filters
 175   --enable-protocol=NAME   enable protocol NAME
 176   --disable-protocol=NAME  disable protocol NAME
 177   --disable-protocols      disable all protocols
 178   --enable-indev=NAME      enable input device NAME
 179   --disable-indev=NAME     disable input device NAME
 180   --disable-indevs         disable input devices
 181   --enable-outdev=NAME     enable output device NAME
 182   --disable-outdev=NAME    disable output device NAME
 183   --disable-outdevs        disable output devices
 184   --disable-devices        disable all devices
 185   --enable-filter=NAME     enable filter NAME
 186   --disable-filter=NAME    disable filter NAME
 187   --disable-filters        disable all filters
 188
 189 External library support:
 190
 191   Using any of the following switches will allow FFmpeg to link to the
 192   corresponding external library. All the components depending on that library
 193   will become enabled, if all their other dependencies are met and they are not
 194   explicitly disabled. E.g. --enable-libwavpack will enable linking to
 195   libwavpack and allow the libwavpack encoder to be built, unless it is
 196   specifically disabled with --disable-encoder=libwavpack.
 197
 198   Note that only the system libraries are auto-detected. All the other external
 199   libraries must be explicitly enabled.
 200
 201   Also note that the following help text describes the purpose of the libraries
 202   themselves, not all their features will necessarily be usable by FFmpeg.
 203
 204   --enable-avisynth        enable reading of AviSynth script files [no]
 205   --disable-bzlib          disable bzlib [autodetect]
 206   --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
 207   --enable-frei0r          enable frei0r video filtering [no]
 208   --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
 209                            if openssl, librtmp or gmp is not used [no]
 210   --enable-gmp             enable gmp, needed for rtmp(t)e support
 211                            if openssl or librtmp is not used [no]
 212   --enable-gnutls          enable gnutls, needed for https support
 213                            if openssl is not used [no]
 214   --disable-iconv          disable iconv [autodetect]
 215   --enable-jni             enable JNI support [no]
 216   --enable-ladspa          enable LADSPA audio filtering [no]
 217   --enable-libass          enable libass subtitles rendering,
 218                            needed for subtitles and ass filter [no]
 219   --enable-libbluray       enable BluRay reading using libbluray [no]
 220   --enable-libbs2b         enable bs2b DSP library [no]
 221   --enable-libcaca         enable textual display using libcaca [no]
 222   --enable-libcelt         enable CELT decoding via libcelt [no]
 223   --enable-libcdio         enable audio CD grabbing with libcdio [no]
 224   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 225                            and libraw1394 [no]
 226   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 227   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 228   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
 229   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
 230   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
 231   --enable-libgme          enable Game Music Emu via libgme [no]
 232   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 233   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 234   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 235   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
 236   --enable-libmodplug      enable ModPlug via libmodplug [no]
 237   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 238   --enable-libnut          enable NUT (de)muxing via libnut,
 239                            native (de)muxer exists [no]
 240   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 241   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 242   --enable-libopencv       enable video filtering via libopencv [no]
 243   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 244   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 245   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
 246   --enable-libopus         enable Opus de/encoding via libopus [no]
 247   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 248   --enable-librubberband   enable rubberband needed for rubberband filter [no]
 249   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 250   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
 251   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 252   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 253   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
 254   --enable-libsoxr         enable Include libsoxr resampling [no]
 255   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 256   --enable-libssh          enable SFTP protocol via libssh [no]
 257   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
 258   --enable-libtheora       enable Theora encoding via libtheora [no]
 259   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 260   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 261   --enable-libvidstab      enable video stabilization using vid.stab [no]
 262   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 263   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 264                            native implementation exists [no]
 265   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 266   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 267   --enable-libwebp         enable WebP encoding via libwebp [no]
 268   --enable-libx264         enable H.264 encoding via x264 [no]
 269   --enable-libx265         enable HEVC encoding via x265 [no]
 270   --enable-libxavs         enable AVS encoding via xavs [no]
 271   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
 272   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
 273   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
 274   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
 275   --enable-libxvid         enable Xvid encoding via xvidcore,
 276                            native MPEG-4/Xvid encoder exists [no]
 277   --enable-libzimg         enable z.lib, needed for zscale filter [no]
 278   --enable-libzmq          enable message passing via libzmq [no]
 279   --enable-libzvbi         enable teletext support via libzvbi [no]
 280   --disable-lzma           disable lzma [autodetect]
 281   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
 282   --enable-mediacodec      enable Android MediaCodec support [no]
 283   --enable-netcdf          enable NetCDF, needed for sofalizer filter [no]
 284   --enable-openal          enable OpenAL 1.1 capture support [no]
 285   --enable-opencl          enable OpenCL code
 286   --enable-opengl          enable OpenGL rendering [no]
 287   --enable-openssl         enable openssl, needed for https support
 288                            if gnutls is not used [no]
 289   --disable-schannel       disable SChannel SSP, needed for TLS support on
 290                            Windows if openssl and gnutls are not used [autodetect]
 291   --disable-sdl2           disable sdl2 [autodetect]
 292   --disable-securetransport disable Secure Transport, needed for TLS support
 293                            on OSX if openssl and gnutls are not used [autodetect]
 294   --disable-xlib           disable xlib [autodetect]
 295   --disable-zlib           disable zlib [autodetect]
 296
 297   The following libraries provide various hardware acceleration features:
 298   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
 299   --disable-cuda           disable dynamically linked Nvidia CUDA code [autodetect]
 300   --disable-cuvid          disable Nvidia CUVID support [autodetect]
 301   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
 302   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
 303   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
 304   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
 305   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
 306   --disable-nvenc          disable Nvidia video encoding code [autodetect]
 307   --enable-omx             enable OpenMAX IL code [no]
 308   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
 309   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
 310   --disable-vda            disable Apple Video Decode Acceleration code [autodetect]
 311   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
 312   --disable-videotoolbox   disable VideoToolbox code [autodetect]
 313
 314 Toolchain options:
 315   --arch=ARCH              select architecture [$arch]
 316   --cpu=CPU                select the minimum required CPU (affects
 317                            instruction selection, may crash on older CPUs)
 318   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 319   --progs-suffix=SUFFIX    program name suffix []
 320   --enable-cross-compile   assume a cross-compiler is used
 321   --sysroot=PATH           root of cross-build tree
 322   --sysinclude=PATH        location of cross-build system headers
 323   --target-os=OS           compiler targets OS [$target_os]
 324   --target-exec=CMD        command to run executables on target
 325   --target-path=DIR        path to view of build directory on target
 326   --target-samples=DIR     path to samples directory on target
 327   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 328   --toolchain=NAME         set tool defaults according to NAME
 329   --nm=NM                  use nm tool NM [$nm_default]
 330   --ar=AR                  use archive tool AR [$ar_default]
 331   --as=AS                  use assembler AS [$as_default]
 332   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
 333   --strip=STRIP            use strip tool STRIP [$strip_default]
 334   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 335   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
 336   --cc=CC                  use C compiler CC [$cc_default]
 337   --cxx=CXX                use C compiler CXX [$cxx_default]
 338   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 339   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 340   --ld=LD                  use linker LD [$ld_default]
 341   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 342   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 343   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 344   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 345   --host-cc=HOSTCC         use host C compiler HOSTCC
 346   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 347   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 348   --host-ld=HOSTLD         use host linker HOSTLD
 349   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 350   --host-libs=HLIBS        use libs HLIBS when linking for host
 351   --host-os=OS             compiler host OS [$target_os]
 352   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 353   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 354   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 355   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 356   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 357   --extra-ldlibflags=ELDFLAGS add ELDFLAGS to LDLIBFLAGS [$LDLIBFLAGS]
 358   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 359   --extra-version=STRING   version string suffix []
 360   --optflags=OPTFLAGS      override optimization-related compiler flags
 361   --build-suffix=SUFFIX    library name suffix []
 362   --enable-pic             build position-independent code
 363   --enable-thumb           compile for Thumb instruction set
 364   --enable-lto             use link-time optimization
 365   --env="ENV=override"     override the environment variables
 366
 367 Advanced options (experts only):
 368   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 369   --custom-allocator=NAME  use a supported custom allocator
 370   --disable-symver         disable symbol versioning
 371   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 372   --disable-safe-bitstream-reader
 373                            disable buffer boundary checking in bitreaders
 374                            (faster, but may crash)
 375   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 376
 377 Optimization options (experts only):
 378   --disable-asm            disable all assembly optimizations
 379   --disable-altivec        disable AltiVec optimizations
 380   --disable-vsx            disable VSX optimizations
 381   --disable-power8         disable POWER8 optimizations
 382   --disable-amd3dnow       disable 3DNow! optimizations
 383   --disable-amd3dnowext    disable 3DNow! extended optimizations
 384   --disable-mmx            disable MMX optimizations
 385   --disable-mmxext         disable MMXEXT optimizations
 386   --disable-sse            disable SSE optimizations
 387   --disable-sse2           disable SSE2 optimizations
 388   --disable-sse3           disable SSE3 optimizations
 389   --disable-ssse3          disable SSSE3 optimizations
 390   --disable-sse4           disable SSE4 optimizations
 391   --disable-sse42          disable SSE4.2 optimizations
 392   --disable-avx            disable AVX optimizations
 393   --disable-xop            disable XOP optimizations
 394   --disable-fma3           disable FMA3 optimizations
 395   --disable-fma4           disable FMA4 optimizations
 396   --disable-avx2           disable AVX2 optimizations
 397   --disable-aesni          disable AESNI optimizations
 398   --disable-armv5te        disable armv5te optimizations
 399   --disable-armv6          disable armv6 optimizations
 400   --disable-armv6t2        disable armv6t2 optimizations
 401   --disable-vfp            disable VFP optimizations
 402   --disable-neon           disable NEON optimizations
 403   --disable-inline-asm     disable use of inline assembly
 404   --disable-yasm           disable use of nasm/yasm assembly
 405   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
 406   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 407   --disable-msa            disable MSA optimizations
 408   --disable-mipsfpu        disable floating point MIPS optimizations
 409   --disable-mmi            disable Loongson SIMD optimizations
 410   --disable-fast-unaligned consider unaligned accesses slow
 411
 412 Developer options (useful when working on FFmpeg itself):
 413   --disable-debug          disable debugging symbols
 414   --enable-debug=LEVEL     set the debug level [$debuglevel]
 415   --disable-optimizations  disable compiler optimizations
 416   --enable-extra-warnings  enable more compiler warnings
 417   --disable-stripping      disable stripping of executables and shared libraries
 418   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 419                            2 causes a slowdown at runtime.
 420   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 421   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 422                            leaks and errors, using the specified valgrind binary.
 423                            Cannot be combined with --target-exec
 424   --enable-ftrapv          Trap arithmetic overflows
 425   --samples=PATH           location of test samples for FATE, if not set use
 426                            \$FATE_SAMPLES at make invocation time.
 427   --enable-neon-clobber-test check NEON registers for clobbering (should be
 428                            used only for debugging purposes)
 429   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 430                            should be used only for debugging purposes)
 431   --enable-random          randomly enable/disable components
 432   --disable-random
 433   --enable-random=LIST     randomly enable/disable specific components or
 434   --disable-random=LIST    component groups. LIST is a comma-separated list
 435                            of NAME[:PROB] entries where NAME is a component
 436                            (group) and PROB the probability associated with
 437                            NAME (default 0.5).
 438   --random-seed=VALUE      seed value for --enable/disable-random
 439   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 440                            (only applies to --disable-optimizations builds)
 441
 442 NOTE: Object files are built at the place where configure is launched.
 443 EOF
 444   exit 0
 445 }
 446
 447 quotes='""'
 448 if test -t 1 && which tput >/dev/null 2>&1; then
 449     ncolors=$(tput colors)
 450     if test -n "$ncolors" && test $ncolors -ge 8; then
 451         bold_color=$(tput bold)
 452         warn_color=$(tput setaf 3)
 453         error_color=$(tput setaf 1)
 454         reset_color=$(tput sgr0)
 455     fi
 456     # 72 used instead of 80 since that's the default of pr
 457     ncols=$(tput cols)
 458 fi
 459 : ${ncols:=72}
 460
 461 log(){
 462     echo "$@" >> $logfile
 463 }
 464
 465 log_file(){
 466     log BEGIN $1
 467     pr -n -t $1 >> $logfile
 468     log END $1
 469 }
 470
 471 warn(){
 472     log "WARNING: $*"
 473     WARNINGS="${WARNINGS}WARNING: $*\n"
 474 }
 475
 476 die(){
 477     log "$@"
 478     echo "$error_color$bold_color$@$reset_color"
 479     cat <<EOF
 480
 481 If you think configure made a mistake, make sure you are using the latest
 482 version from Git.  If the latest version fails, report the problem to the
 483 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 484 EOF
 485     if disabled logging; then
 486         cat <<EOF
 487 Rerun configure with logging enabled (do not use --disable-logging), and
 488 include the log this produces with your report.
 489 EOF
 490     else
 491         cat <<EOF
 492 Include the log file "$logfile" produced by configure as this will help
 493 solve the problem.
 494 EOF
 495     fi
 496     exit 1
 497 }
 498
 499 # Avoid locale weirdness, besides we really just want to translate ASCII.
 500 toupper(){
 501     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 502 }
 503
 504 tolower(){
 505     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 506 }
 507
 508 c_escape(){
 509     echo "$*" | sed 's/["\\]/\\\0/g'
 510 }
 511
 512 sh_quote(){
 513     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 514     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 515     echo "$v"
 516 }
 517
 518 cleanws(){
 519     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 520 }
 521
 522 filter(){
 523     pat=$1
 524     shift
 525     for v; do
 526         eval "case $v in $pat) echo $v ;; esac"
 527     done
 528 }
 529
 530 filter_out(){
 531     pat=$1
 532     shift
 533     for v; do
 534         eval "case $v in $pat) ;; *) echo $v ;; esac"
 535     done
 536 }
 537
 538 map(){
 539     m=$1
 540     shift
 541     for v; do eval $m; done
 542 }
 543
 544 add_suffix(){
 545     suffix=$1
 546     shift
 547     for v; do echo ${v}${suffix}; done
 548 }
 549
 550 set_all(){
 551     value=$1
 552     shift
 553     for var in $*; do
 554         eval $var=$value
 555     done
 556 }
 557
 558 set_weak(){
 559     value=$1
 560     shift
 561     for var; do
 562         eval : \${$var:=$value}
 563     done
 564 }
 565
 566 sanitize_var_name(){
 567     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 568 }
 569
 570 set_safe(){
 571     var=$1
 572     shift
 573     eval $(sanitize_var_name "$var")='$*'
 574 }
 575
 576 get_safe(){
 577     eval echo \$$(sanitize_var_name "$1")
 578 }
 579
 580 pushvar(){
 581     for pvar in $*; do
 582         eval level=\${${pvar}_level:=0}
 583         eval ${pvar}_${level}="\$$pvar"
 584         eval ${pvar}_level=$(($level+1))
 585     done
 586 }
 587
 588 popvar(){
 589     for pvar in $*; do
 590         eval level=\${${pvar}_level:-0}
 591         test $level = 0 && continue
 592         eval level=$(($level-1))
 593         eval $pvar="\${${pvar}_${level}}"
 594         eval ${pvar}_level=$level
 595         eval unset ${pvar}_${level}
 596     done
 597 }
 598
 599 request(){
 600     for var in $*; do
 601         eval ${var}_requested=yes
 602         eval $var=
 603     done
 604 }
 605
 606 enable(){
 607     set_all yes $*
 608 }
 609
 610 disable(){
 611     set_all no $*
 612 }
 613
 614 enable_weak(){
 615     set_weak yes $*
 616 }
 617
 618 disable_weak(){
 619     set_weak no $*
 620 }
 621
 622 enable_safe(){
 623     for var; do
 624         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 625     done
 626 }
 627
 628 disable_safe(){
 629     for var; do
 630         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 631     done
 632 }
 633
 634 do_enable_deep(){
 635     for var; do
 636         enabled $var && continue
 637         eval sel="\$${var}_select"
 638         eval sgs="\$${var}_suggest"
 639         pushvar var sgs
 640         enable_deep $sel
 641         popvar sgs
 642         enable_deep_weak $sgs
 643         popvar var
 644     done
 645 }
 646
 647 enable_deep(){
 648     do_enable_deep $*
 649     enable $*
 650 }
 651
 652 enable_deep_weak(){
 653     for var; do
 654         disabled $var && continue
 655         pushvar var
 656         do_enable_deep $var
 657         popvar var
 658         enable_weak $var
 659     done
 660 }
 661
 662 requested(){
 663     test "${1#!}" = "$1" && op='=' || op=!=
 664     eval test "x\$${1#!}_requested" $op "xyes"
 665 }
 666
 667 enabled(){
 668     test "${1#!}" = "$1" && op='=' || op=!=
 669     eval test "x\$${1#!}" $op "xyes"
 670 }
 671
 672 disabled(){
 673     test "${1#!}" = "$1" && op='=' || op=!=
 674     eval test "x\$${1#!}" $op "xno"
 675 }
 676
 677 enabled_all(){
 678     for opt; do
 679         enabled $opt || return 1
 680     done
 681 }
 682
 683 disabled_all(){
 684     for opt; do
 685         disabled $opt || return 1
 686     done
 687 }
 688
 689 enabled_any(){
 690     for opt; do
 691         enabled $opt && return 0
 692     done
 693 }
 694
 695 disabled_any(){
 696     for opt; do
 697         disabled $opt && return 0
 698     done
 699     return 1
 700 }
 701
 702 set_default(){
 703     for opt; do
 704         eval : \${$opt:=\$${opt}_default}
 705     done
 706 }
 707
 708 is_in(){
 709     value=$1
 710     shift
 711     for var in $*; do
 712         [ $var = $value ] && return 0
 713     done
 714     return 1
 715 }
 716
 717 do_check_deps(){
 718     for cfg; do
 719         cfg="${cfg#!}"
 720         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 721         disabled ${cfg}_checking && continue
 722         enable ${cfg}_checking
 723         append allopts $cfg
 724
 725         eval dep_all="\$${cfg}_deps"
 726         eval dep_any="\$${cfg}_deps_any"
 727         eval dep_sel="\$${cfg}_select"
 728         eval dep_sgs="\$${cfg}_suggest"
 729         eval dep_ifa="\$${cfg}_if"
 730         eval dep_ifn="\$${cfg}_if_any"
 731
 732         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 733         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
 734         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 735
 736         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 737         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 738         enabled_all  $dep_all || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not all dependencies are satisfied: $dep_all"; }
 739         enabled_any  $dep_any || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not any dependency is satisfied: $dep_any"; }
 740         disabled_any $dep_sel && { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some selected dependency is unsatisfied: $dep_sel"; }
 741
 742         if enabled $cfg; then
 743             enable_deep $dep_sel
 744             enable_deep_weak $dep_sgs
 745         fi
 746
 747         disable ${cfg}_checking
 748     done
 749 }
 750
 751 check_deps(){
 752     unset allopts
 753
 754     do_check_deps "$@"
 755
 756     for cfg in $allopts; do
 757         enabled $cfg || continue
 758         eval dep_extralibs="\$${cfg}_extralibs"
 759         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
 760     done
 761 }
 762
 763 print_config(){
 764     pfx=$1
 765     files=$2
 766     shift 2
 767     map 'eval echo "$v \${$v:-no}"' "$@" |
 768     awk "BEGIN { split(\"$files\", files) }
 769         {
 770             c = \"$pfx\" toupper(\$1);
 771             v = \$2;
 772             sub(/yes/, 1, v);
 773             sub(/no/,  0, v);
 774             for (f in files) {
 775                 file = files[f];
 776                 if (file ~ /\\.h\$/) {
 777                     printf(\"#define %s %d\\n\", c, v) >>file;
 778                 } else if (file ~ /\\.asm\$/) {
 779                     printf(\"%%define %s %d\\n\", c, v) >>file;
 780                 } else if (file ~ /\\.mak\$/) {
 781                     n = -v ? \"\" : \"!\";
 782                     printf(\"%s%s=yes\\n\", n, c) >>file;
 783                 } else if (file ~ /\\.texi\$/) {
 784                     pre = -v ? \"\" : \"@c \";
 785                     yesno = \$2;
 786                     c2 = tolower(c);
 787                     gsub(/_/, \"-\", c2);
 788                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 789                 }
 790             }
 791         }"
 792 }
 793
 794 print_enabled(){
 795     suf=$1
 796     shift
 797     for v; do
 798         enabled $v && printf "%s\n" ${v%$suf}
 799     done
 800 }
 801
 802 append(){
 803     var=$1
 804     shift
 805     eval "$var=\"\$$var $*\""
 806 }
 807
 808 prepend(){
 809     var=$1
 810     shift
 811     eval "$var=\"$* \$$var\""
 812 }
 813
 814 unique(){
 815     var=$1
 816     uniq_list=""
 817     for tok in $(eval echo \$$var); do
 818         uniq_list="$(filter_out $tok $uniq_list) $tok"
 819     done
 820     eval "$var=\"${uniq_list}\""
 821 }
 822
 823 add_cppflags(){
 824     append CPPFLAGS "$@"
 825 }
 826
 827 add_cflags(){
 828     append CFLAGS $($cflags_filter "$@")
 829 }
 830
 831 add_cxxflags(){
 832     append CXXFLAGS $($cflags_filter "$@")
 833 }
 834
 835 add_asflags(){
 836     append ASFLAGS $($asflags_filter "$@")
 837 }
 838
 839 add_objcflags(){
 840     append OBJCFLAGS $($objcflags_filter "$@")
 841 }
 842
 843 add_ldflags(){
 844     append LDFLAGS $($ldflags_filter "$@")
 845 }
 846
 847 add_ldexeflags(){
 848     append LDEXEFLAGS $($ldflags_filter "$@")
 849 }
 850
 851 add_ldlibflags(){
 852     append LDLIBFLAGS $($ldflags_filter "$@")
 853 }
 854
 855 add_stripflags(){
 856     append ASMSTRIPFLAGS "$@"
 857 }
 858
 859 add_extralibs(){
 860     prepend extralibs $($ldflags_filter "$@")
 861 }
 862
 863 add_host_cppflags(){
 864     append host_cppflags "$@"
 865 }
 866
 867 add_host_cflags(){
 868     append host_cflags $($host_cflags_filter "$@")
 869 }
 870
 871 add_host_ldflags(){
 872     append host_ldflags $($host_ldflags_filter "$@")
 873 }
 874
 875 add_compat(){
 876     append compat_objs $1
 877     shift
 878     map 'add_cppflags -D$v' "$@"
 879 }
 880
 881 check_cmd(){
 882     log "$@"
 883     "$@" >> $logfile 2>&1
 884 }
 885
 886 check_stat(){
 887     log check_stat "$@"
 888     stat "$1" >> $logfile 2>&1
 889 }
 890
 891 cc_o(){
 892     eval printf '%s\\n' $CC_O
 893 }
 894
 895 cc_e(){
 896     eval printf '%s\\n' $CC_E
 897 }
 898
 899 check_cc(){
 900     log check_cc "$@"
 901     cat > $TMPC
 902     log_file $TMPC
 903     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 904 }
 905
 906 check_cxx(){
 907     log check_cxx "$@"
 908     cat > $TMPCPP
 909     log_file $TMPCPP
 910     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 911 }
 912
 913 check_objcc(){
 914     log check_objcc "$@"
 915     cat > $TMPM
 916     log_file $TMPM
 917     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
 918 }
 919
 920 check_cpp(){
 921     log check_cpp "$@"
 922     cat > $TMPC
 923     log_file $TMPC
 924     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 925 }
 926
 927 as_o(){
 928     eval printf '%s\\n' $AS_O
 929 }
 930
 931 check_as(){
 932     log check_as "$@"
 933     cat > $TMPS
 934     log_file $TMPS
 935     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 936 }
 937
 938 check_inline_asm(){
 939     log check_inline_asm "$@"
 940     name="$1"
 941     code="$2"
 942     shift 2
 943     disable $name
 944     check_cc "$@" <<EOF && enable $name
 945 void foo(void){ __asm__ volatile($code); }
 946 EOF
 947 }
 948
 949 check_inline_asm_flags(){
 950     log check_inline_asm_flags "$@"
 951     name="$1"
 952     code="$2"
 953     flags=''
 954     shift 2
 955     while [ "$1" != "" ]; do
 956       append flags $1
 957       shift
 958     done;
 959     disable $name
 960     cat > $TMPC <<EOF
 961 void foo(void){ __asm__ volatile($code); }
 962 EOF
 963     log_file $TMPC
 964     check_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
 965     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
 966 }
 967
 968 check_insn(){
 969     log check_insn "$@"
 970     check_inline_asm ${1}_inline "\"$2\""
 971     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 972 }
 973
 974 check_yasm(){
 975     log check_yasm "$@"
 976     echo "$1" > $TMPS
 977     log_file $TMPS
 978     shift 1
 979     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
 980 }
 981
 982 ld_o(){
 983     eval printf '%s\\n' $LD_O
 984 }
 985
 986 check_ld(){
 987     log check_ld "$@"
 988     type=$1
 989     shift 1
 990     flags=$(filter_out '-l*|*.so' $@)
 991     libs=$(filter '-l*|*.so' $@)
 992     check_$type $($cflags_filter $flags) || return
 993     flags=$($ldflags_filter $flags)
 994     libs=$($ldflags_filter $libs)
 995     check_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
 996 }
 997
 998 print_include(){
 999     hdr=$1
1000     test "${hdr%.h}" = "${hdr}" &&
1001         echo "#include $hdr"    ||
1002         echo "#include <$hdr>"
1003 }
1004
1005 check_code(){
1006     log check_code "$@"
1007     check=$1
1008     headers=$2
1009     code=$3
1010     shift 3
1011     {
1012         for hdr in $headers; do
1013             print_include $hdr
1014         done
1015         echo "int main(void) { $code; return 0; }"
1016     } | check_$check "$@"
1017 }
1018
1019 check_cppflags(){
1020     log check_cppflags "$@"
1021     check_cpp "$@" <<EOF && append CPPFLAGS "$@"
1022 int x;
1023 EOF
1024 }
1025
1026 test_cflags(){
1027     log test_cflags "$@"
1028     set -- $($cflags_filter "$@")
1029     check_cc "$@" <<EOF
1030 int x;
1031 EOF
1032 }
1033
1034 check_cflags(){
1035     log check_cflags "$@"
1036     test_cflags "$@" && add_cflags "$@"
1037 }
1038
1039 check_cxxflags(){
1040     log check_cxxflags "$@"
1041     set -- $($cflags_filter "$@")
1042     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
1043 int x;
1044 EOF
1045 }
1046
1047 test_objcflags(){
1048     log test_objcflags "$@"
1049     set -- $($objcflags_filter "$@")
1050     check_objcc "$@" <<EOF
1051 int x;
1052 EOF
1053 }
1054
1055 check_objcflags(){
1056     log check_objcflags "$@"
1057     test_objcflags "$@" && add_objcflags "$@"
1058 }
1059
1060 test_ldflags(){
1061     log test_ldflags "$@"
1062     check_ld "cc" "$@" <<EOF
1063 int main(void){ return 0; }
1064 EOF
1065 }
1066
1067 check_ldflags(){
1068     log check_ldflags "$@"
1069     test_ldflags "$@" && add_ldflags "$@"
1070 }
1071
1072 test_stripflags(){
1073     log test_stripflags "$@"
1074     # call check_cc to get a fresh TMPO
1075     check_cc <<EOF
1076 int main(void) { return 0; }
1077 EOF
1078     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1079 }
1080
1081 check_stripflags(){
1082     log check_stripflags "$@"
1083     test_stripflags "$@" && add_stripflags "$@"
1084 }
1085
1086 check_header(){
1087     log check_header "$@"
1088     header=$1
1089     shift
1090     disable_safe $header
1091     check_cpp "$@" <<EOF && enable_safe $header
1092 #include <$header>
1093 int x;
1094 EOF
1095 }
1096
1097 check_header_objcc(){
1098     log check_header_objcc "$@"
1099     rm -f -- "$TMPO"
1100     header=$1
1101     shift
1102     disable_safe $header
1103     {
1104        echo "#include <$header>"
1105        echo "int main(void) { return 0; }"
1106     } | check_objcc && check_stat "$TMPO" && enable_safe $headers
1107 }
1108
1109 check_func(){
1110     log check_func "$@"
1111     func=$1
1112     shift
1113     disable $func
1114     check_ld "cc" "$@" <<EOF && enable $func
1115 extern int $func();
1116 int main(void){ $func(); }
1117 EOF
1118 }
1119
1120 check_complexfunc(){
1121     log check_complexfunc "$@"
1122     func=$1
1123     narg=$2
1124     shift 2
1125     test $narg = 2 && args="f, g" || args="f * I"
1126     disable $func
1127     check_ld "cc" "$@" <<EOF && enable $func
1128 #include <complex.h>
1129 #include <math.h>
1130 float foo(complex float f, complex float g) { return $func($args); }
1131 int main(void){ return (int) foo; }
1132 EOF
1133 }
1134
1135 check_mathfunc(){
1136     log check_mathfunc "$@"
1137     func=$1
1138     narg=$2
1139     shift 2
1140     test $narg = 2 && args="f, g" || args="f"
1141     disable $func
1142     check_ld "cc" "$@" <<EOF && enable $func
1143 #include <math.h>
1144 float foo(float f, float g) { return $func($args); }
1145 int main(void){ return (int) foo; }
1146 EOF
1147 }
1148
1149 check_func_headers(){
1150     log check_func_headers "$@"
1151     headers=$1
1152     funcs=$2
1153     shift 2
1154     {
1155         for hdr in $headers; do
1156             print_include $hdr
1157         done
1158         echo "#include <stdint.h>"
1159         for func in $funcs; do
1160             echo "long check_$func(void) { return (long) $func; }"
1161         done
1162         echo "int main(void) { int ret = 0;"
1163         # LTO could optimize out the test functions without this
1164         for func in $funcs; do
1165             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1166         done
1167         echo "return ret; }"
1168     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1169 }
1170
1171 check_class_headers_cpp(){
1172     log check_class_headers_cpp "$@"
1173     headers=$1
1174     classes=$2
1175     shift 2
1176     {
1177         for hdr in $headers; do
1178             echo "#include <$hdr>"
1179         done
1180         echo "int main(void) { "
1181         i=1
1182         for class in $classes; do
1183             echo "$class obj$i;"
1184             i=$(expr $i + 1)
1185         done
1186         echo "return 0; }"
1187     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1188 }
1189
1190 check_cpp_condition(){
1191     log check_cpp_condition "$@"
1192     header=$1
1193     condition=$2
1194     shift 2
1195     check_cpp "$@" <<EOF
1196 #include <$header>
1197 #if !($condition)
1198 #error "unsatisfied condition: $condition"
1199 #endif
1200 EOF
1201 }
1202
1203 test_cflags_cc(){
1204     log test_cflags_cc "$@"
1205     flags=$1
1206     header=$2
1207     condition=$3
1208     shift 3
1209     set -- $($cflags_filter "$flags")
1210     check_cc "$@" <<EOF
1211 #include <$header>
1212 #if !($condition)
1213 #error "unsatisfied condition: $condition"
1214 #endif
1215 EOF
1216 }
1217
1218 check_lib(){
1219     log check_lib "$@"
1220     headers="$1"
1221     funcs="$2"
1222     shift 2
1223     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1224 }
1225
1226 check_lib_cpp(){
1227     log check_lib_cpp "$@"
1228     headers="$1"
1229     classes="$2"
1230     shift 2
1231     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1232 }
1233
1234 check_pkg_config(){
1235     log check_pkg_config "$@"
1236     pkgandversion="$1"
1237     pkg="${1%% *}"
1238     headers="$2"
1239     funcs="$3"
1240     shift 3
1241     check_cmd $pkg_config --exists --print-errors $pkgandversion || return
1242     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1243     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1244     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1245         set_safe "${pkg}_cflags" $pkg_cflags   &&
1246         set_safe "${pkg}_libs"   $pkg_libs
1247 }
1248
1249 check_exec(){
1250     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1251 }
1252
1253 check_exec_crash(){
1254     log check_exec_crash "$@"
1255     code=$(cat)
1256
1257     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1258     # are safe but may not be available everywhere.  Thus we use
1259     # raise(SIGTERM) instead.  The check is run in a subshell so we
1260     # can redirect the "Terminated" message from the shell.  SIGBUS
1261     # is not defined by standard C so it is used conditionally.
1262
1263     (check_exec "$@") >> $logfile 2>&1 <<EOF
1264 #include <signal.h>
1265 static void sighandler(int sig){
1266     raise(SIGTERM);
1267 }
1268 int foo(void){
1269     $code
1270 }
1271 int (*func_ptr)(void) = foo;
1272 int main(void){
1273     signal(SIGILL, sighandler);
1274     signal(SIGFPE, sighandler);
1275     signal(SIGSEGV, sighandler);
1276 #ifdef SIGBUS
1277     signal(SIGBUS, sighandler);
1278 #endif
1279     return func_ptr();
1280 }
1281 EOF
1282 }
1283
1284 check_type(){
1285     log check_type "$@"
1286     headers=$1
1287     type=$2
1288     shift 2
1289     disable_safe "$type"
1290     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1291 }
1292
1293 check_struct(){
1294     log check_struct "$@"
1295     headers=$1
1296     struct=$2
1297     member=$3
1298     shift 3
1299     disable_safe "${struct}_${member}"
1300     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1301         enable_safe "${struct}_${member}"
1302 }
1303
1304 check_builtin(){
1305     log check_builtin "$@"
1306     name=$1
1307     headers=$2
1308     builtin=$3
1309     shift 3
1310     disable "$name"
1311     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1312 }
1313
1314 check_compile_assert(){
1315     log check_compile_assert "$@"
1316     name=$1
1317     headers=$2
1318     condition=$3
1319     shift 3
1320     disable "$name"
1321     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1322 }
1323
1324 require(){
1325     log require "$@"
1326     name="$1"
1327     headers="$2"
1328     func="$3"
1329     shift 3
1330     check_lib "$headers" $func "$@" || die "ERROR: $name not found"
1331 }
1332
1333 require_cpp(){
1334     name="$1"
1335     headers="$2"
1336     classes="$3"
1337     shift 3
1338     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1339 }
1340
1341 use_pkg_config(){
1342     log use_pkg_config "$@"
1343     pkg="$1"
1344     check_pkg_config "$@" || return 1
1345     add_cflags    $(get_safe "${pkg}_cflags")
1346     add_extralibs $(get_safe "${pkg}_libs")
1347 }
1348
1349 require_pkg_config(){
1350     use_pkg_config "$@" || die "ERROR: $pkg not found using pkg-config$pkg_config_fail_message"
1351 }
1352
1353 require_libfreetype(){
1354     log require_libfreetype "$@"
1355     pkg="freetype2"
1356     check_cmd $pkg_config --exists --print-errors $pkg \
1357       || die "ERROR: $pkg not found"
1358     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1359     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1360     {
1361         echo "#include <ft2build.h>"
1362         echo "#include FT_FREETYPE_H"
1363         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1364         echo "int main(void) { return 0; }"
1365     } | check_ld "cc" $pkg_cflags $pkg_libs \
1366       && set_safe "${pkg}_cflags" $pkg_cflags \
1367       && set_safe "${pkg}_libs"   $pkg_libs \
1368       || die "ERROR: $pkg not found"
1369     add_cflags    $(get_safe "${pkg}_cflags")
1370     add_extralibs $(get_safe "${pkg}_libs")
1371 }
1372
1373 hostcc_e(){
1374     eval printf '%s\\n' $HOSTCC_E
1375 }
1376
1377 hostcc_o(){
1378     eval printf '%s\\n' $HOSTCC_O
1379 }
1380
1381 check_host_cc(){
1382     log check_host_cc "$@"
1383     cat > $TMPC
1384     log_file $TMPC
1385     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1386 }
1387
1388 check_host_cpp(){
1389     log check_host_cpp "$@"
1390     cat > $TMPC
1391     log_file $TMPC
1392     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1393 }
1394
1395 check_host_cppflags(){
1396     log check_host_cppflags "$@"
1397     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1398 int x;
1399 EOF
1400 }
1401
1402 check_host_cflags(){
1403     log check_host_cflags "$@"
1404     set -- $($host_cflags_filter "$@")
1405     check_host_cc "$@" <<EOF && append host_cflags "$@"
1406 int x;
1407 EOF
1408 }
1409
1410 check_host_cpp_condition(){
1411     log check_host_cpp_condition "$@"
1412     header=$1
1413     condition=$2
1414     shift 2
1415     check_host_cpp "$@" <<EOF
1416 #include <$header>
1417 #if !($condition)
1418 #error "unsatisfied condition: $condition"
1419 #endif
1420 EOF
1421 }
1422
1423 cp_if_changed(){
1424     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1425     mkdir -p "$(dirname $2)"
1426     $cp_f "$1" "$2"
1427 }
1428
1429 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1430 # system-dependent things.
1431
1432 AVCODEC_COMPONENTS="
1433     bsfs
1434     decoders
1435     encoders
1436     hwaccels
1437     parsers
1438 "
1439
1440 AVDEVICE_COMPONENTS="
1441     indevs
1442     outdevs
1443 "
1444 AVFILTER_COMPONENTS="
1445     filters
1446 "
1447 AVFORMAT_COMPONENTS="
1448     demuxers
1449     muxers
1450     protocols
1451 "
1452
1453 AVRESAMPLE_COMPONENTS=""
1454 AVUTIL_COMPONENTS=""
1455
1456 COMPONENT_LIST="
1457     $AVCODEC_COMPONENTS
1458     $AVDEVICE_COMPONENTS
1459     $AVFILTER_COMPONENTS
1460     $AVFORMAT_COMPONENTS
1461     $AVRESAMPLE_COMPONENTS
1462     $AVUTIL_COMPONENTS
1463 "
1464
1465 EXAMPLE_LIST="
1466     avio_dir_cmd_example
1467     avio_reading_example
1468     decode_audio_example
1469     decode_video_example
1470     demuxing_decoding_example
1471     encode_audio_example
1472     encode_video_example
1473     extract_mvs_example
1474     filter_audio_example
1475     filtering_audio_example
1476     filtering_video_example
1477     http_multiclient_example
1478     metadata_example
1479     muxing_example
1480     qsvdec_example
1481     remuxing_example
1482     resampling_audio_example
1483     scaling_video_example
1484     transcode_aac_example
1485     transcoding_example
1486 "
1487 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1488     bzlib
1489     iconv
1490     libxcb
1491     libxcb_shm
1492     libxcb_shape
1493     libxcb_xfixes
1494     lzma
1495     schannel
1496     sdl
1497     sdl2
1498     securetransport
1499     xlib
1500     zlib
1501 "
1502
1503 EXTERNAL_LIBRARY_GPL_LIST="
1504     frei0r
1505     libcdio
1506     librubberband
1507     libvidstab
1508     libx264
1509     libx265
1510     libxavs
1511     libxvid
1512 "
1513
1514 EXTERNAL_LIBRARY_NONFREE_LIST="
1515     libfdk_aac
1516     openssl
1517 "
1518
1519 EXTERNAL_LIBRARY_VERSION3_LIST="
1520     gmp
1521     libopencore_amrnb
1522     libopencore_amrwb
1523     libvo_amrwbenc
1524 "
1525
1526 EXTERNAL_LIBRARY_GPLV3_LIST="
1527     libsmbclient
1528 "
1529
1530 EXTERNAL_LIBRARY_LIST="
1531     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1532     $EXTERNAL_LIBRARY_GPL_LIST
1533     $EXTERNAL_LIBRARY_NONFREE_LIST
1534     $EXTERNAL_LIBRARY_VERSION3_LIST
1535     $EXTERNAL_LIBRARY_GPLV3_LIST
1536     avisynth
1537     chromaprint
1538     crystalhd
1539     decklink
1540     gcrypt
1541     gnutls
1542     jni
1543     ladspa
1544     libass
1545     libbluray
1546     libbs2b
1547     libcaca
1548     libcelt
1549     libdc1394
1550     libflite
1551     libfontconfig
1552     libfreetype
1553     libfribidi
1554     libgme
1555     libgsm
1556     libiec61883
1557     libilbc
1558     libkvazaar
1559     libmodplug
1560     libmp3lame
1561     libnut
1562     libopencv
1563     libopenh264
1564     libopenjpeg
1565     libopenmpt
1566     libopus
1567     libpulse
1568     librtmp
1569     libschroedinger
1570     libshine
1571     libsmbclient
1572     libsnappy
1573     libsoxr
1574     libspeex
1575     libssh
1576     libtesseract
1577     libtheora
1578     libtwolame
1579     libv4l2
1580     libvorbis
1581     libvpx
1582     libwavpack
1583     libwebp
1584     libzimg
1585     libzmq
1586     libzvbi
1587     mediacodec
1588     netcdf
1589     openal
1590     opencl
1591     opengl
1592     videotoolbox
1593 "
1594 HWACCEL_AUTODETECT_LIBRARY_LIST="
1595     audiotoolbox
1596     cuda
1597     cuvid
1598     d3d11va
1599     dxva2
1600     nvenc
1601     vaapi
1602     vda
1603     vdpau
1604     videotoolbox_hwaccel
1605     xvmc
1606 "
1607
1608 HWACCEL_LIBRARY_NONFREE_LIST="
1609     libnpp
1610 "
1611
1612 HWACCEL_LIBRARY_LIST="
1613     $HWACCEL_AUTODETECT_LIBRARY_LIST
1614     $HWACCEL_LIBRARY_NONFREE_LIST
1615     libmfx
1616     mmal
1617     omx
1618 "
1619
1620 DOCUMENT_LIST="
1621     doc
1622     htmlpages
1623     manpages
1624     podpages
1625     txtpages
1626 "
1627
1628 FEATURE_LIST="
1629     ftrapv
1630     gray
1631     hardcoded_tables
1632     omx_rpi
1633     runtime_cpudetect
1634     safe_bitstream_reader
1635     shared
1636     small
1637     static
1638     swscale_alpha
1639 "
1640
1641 LIBRARY_LIST="
1642     avcodec
1643     avdevice
1644     avfilter
1645     avformat
1646     avresample
1647     avutil
1648     postproc
1649     swresample
1650     swscale
1651 "
1652
1653 LICENSE_LIST="
1654     gpl
1655     nonfree
1656     version3
1657 "
1658
1659 PROGRAM_LIST="
1660     ffplay
1661     ffprobe
1662     ffserver
1663     ffmpeg
1664 "
1665
1666 SUBSYSTEM_LIST="
1667     dct
1668     dwt
1669     error_resilience
1670     faan
1671     fast_unaligned
1672     fft
1673     lsp
1674     lzo
1675     mdct
1676     pixelutils
1677     network
1678     rdft
1679 "
1680
1681 CONFIG_LIST="
1682     $COMPONENT_LIST
1683     $DOCUMENT_LIST
1684     $EXAMPLE_LIST
1685     $EXTERNAL_LIBRARY_LIST
1686     $HWACCEL_LIBRARY_LIST
1687     $FEATURE_LIST
1688     $LICENSE_LIST
1689     $LIBRARY_LIST
1690     $PROGRAM_LIST
1691     $SUBSYSTEM_LIST
1692     fontconfig
1693     memory_poisoning
1694     neon_clobber_test
1695     pic
1696     raise_major
1697     thumb
1698     valgrind_backtrace
1699     xmm_clobber_test
1700 "
1701
1702 THREADS_LIST="
1703     pthreads
1704     os2threads
1705     w32threads
1706 "
1707
1708 ATOMICS_LIST="
1709     atomics_gcc
1710     atomics_suncc
1711     atomics_win32
1712 "
1713
1714 AUTODETECT_LIBS="
1715     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1716     $HWACCEL_AUTODETECT_LIBRARY_LIST
1717     $THREADS_LIST
1718 "
1719
1720 ARCH_LIST="
1721     aarch64
1722     alpha
1723     arm
1724     avr32
1725     avr32_ap
1726     avr32_uc
1727     bfin
1728     ia64
1729     m68k
1730     mips
1731     mips64
1732     parisc
1733     ppc
1734     ppc64
1735     s390
1736     sh4
1737     sparc
1738     sparc64
1739     tilegx
1740     tilepro
1741     tomi
1742     x86
1743     x86_32
1744     x86_64
1745 "
1746
1747 ARCH_EXT_LIST_ARM="
1748     armv5te
1749     armv6
1750     armv6t2
1751     armv8
1752     neon
1753     vfp
1754     vfpv3
1755     setend
1756 "
1757
1758 ARCH_EXT_LIST_MIPS="
1759     mipsfpu
1760     mips32r2
1761     mips32r5
1762     mips64r2
1763     mips32r6
1764     mips64r6
1765     mipsdsp
1766     mipsdspr2
1767     msa
1768 "
1769
1770 ARCH_EXT_LIST_LOONGSON="
1771     loongson2
1772     loongson3
1773     mmi
1774 "
1775
1776 ARCH_EXT_LIST_X86_SIMD="
1777     aesni
1778     amd3dnow
1779     amd3dnowext
1780     avx
1781     avx2
1782     fma3
1783     fma4
1784     mmx
1785     mmxext
1786     sse
1787     sse2
1788     sse3
1789     sse4
1790     sse42
1791     ssse3
1792     xop
1793 "
1794
1795 ARCH_EXT_LIST_PPC="
1796     altivec
1797     dcbzl
1798     ldbrx
1799     power8
1800     ppc4xx
1801     vsx
1802 "
1803
1804 ARCH_EXT_LIST_X86="
1805     $ARCH_EXT_LIST_X86_SIMD
1806     cpunop
1807     i686
1808 "
1809
1810 ARCH_EXT_LIST="
1811     $ARCH_EXT_LIST_ARM
1812     $ARCH_EXT_LIST_PPC
1813     $ARCH_EXT_LIST_X86
1814     $ARCH_EXT_LIST_MIPS
1815     $ARCH_EXT_LIST_LOONGSON
1816 "
1817
1818 ARCH_FEATURES="
1819     aligned_stack
1820     fast_64bit
1821     fast_clz
1822     fast_cmov
1823     local_aligned_8
1824     local_aligned_16
1825     local_aligned_32
1826     simd_align_16
1827     simd_align_32
1828 "
1829
1830 BUILTIN_LIST="
1831     atomic_cas_ptr
1832     machine_rw_barrier
1833     MemoryBarrier
1834     mm_empty
1835     rdtsc
1836     sarestart
1837     sem_timedwait
1838     sync_val_compare_and_swap
1839 "
1840 HAVE_LIST_CMDLINE="
1841     inline_asm
1842     symver
1843     yasm
1844 "
1845
1846 HAVE_LIST_PUB="
1847     bigendian
1848     fast_unaligned
1849 "
1850
1851 HEADERS_LIST="
1852     alsa_asoundlib_h
1853     altivec_h
1854     arpa_inet_h
1855     asm_types_h
1856     cdio_paranoia_h
1857     cdio_paranoia_paranoia_h
1858     cuda_h
1859     dispatch_dispatch_h
1860     dev_bktr_ioctl_bt848_h
1861     dev_bktr_ioctl_meteor_h
1862     dev_ic_bt8xx_h
1863     dev_video_bktr_ioctl_bt848_h
1864     dev_video_meteor_ioctl_meteor_h
1865     direct_h
1866     dirent_h
1867     dlfcn_h
1868     d3d11_h
1869     dxva_h
1870     ES2_gl_h
1871     gsm_h
1872     io_h
1873     mach_mach_time_h
1874     machine_ioctl_bt848_h
1875     machine_ioctl_meteor_h
1876     malloc_h
1877     opencv2_core_core_c_h
1878     openjpeg_2_1_openjpeg_h
1879     openjpeg_2_0_openjpeg_h
1880     openjpeg_1_5_openjpeg_h
1881     OpenGL_gl3_h
1882     poll_h
1883     sndio_h
1884     soundcard_h
1885     stdatomic_h
1886     sys_mman_h
1887     sys_param_h
1888     sys_resource_h
1889     sys_select_h
1890     sys_soundcard_h
1891     sys_time_h
1892     sys_un_h
1893     sys_videoio_h
1894     termios_h
1895     udplite_h
1896     unistd_h
1897     valgrind_valgrind_h
1898     windows_h
1899     winsock2_h
1900 "
1901
1902 INTRINSICS_LIST="
1903     intrinsics_neon
1904 "
1905
1906 COMPLEX_FUNCS="
1907     cabs
1908     cexp
1909 "
1910
1911 MATH_FUNCS="
1912     atanf
1913     atan2f
1914     cbrt
1915     cbrtf
1916     copysign
1917     cosf
1918     erf
1919     exp2
1920     exp2f
1921     expf
1922     hypot
1923     isfinite
1924     isinf
1925     isnan
1926     ldexpf
1927     llrint
1928     llrintf
1929     log2
1930     log2f
1931     log10f
1932     lrint
1933     lrintf
1934     powf
1935     rint
1936     round
1937     roundf
1938     sinf
1939     trunc
1940     truncf
1941 "
1942
1943 SYSTEM_FUNCS="
1944     access
1945     aligned_malloc
1946     arc4random
1947     clock_gettime
1948     closesocket
1949     CommandLineToArgvW
1950     CoTaskMemFree
1951     CryptGenRandom
1952     dlopen
1953     fcntl
1954     flt_lim
1955     fork
1956     getaddrinfo
1957     gethrtime
1958     getopt
1959     GetProcessAffinityMask
1960     GetProcessMemoryInfo
1961     GetProcessTimes
1962     getrusage
1963     GetSystemTimeAsFileTime
1964     gettimeofday
1965     glob
1966     glXGetProcAddress
1967     gmtime_r
1968     inet_aton
1969     isatty
1970     jack_port_get_latency_range
1971     kbhit
1972     LoadLibrary
1973     localtime_r
1974     lstat
1975     lzo1x_999_compress
1976     mach_absolute_time
1977     MapViewOfFile
1978     memalign
1979     mkstemp
1980     mmap
1981     mprotect
1982     nanosleep
1983     PeekNamedPipe
1984     posix_memalign
1985     pthread_cancel
1986     sched_getaffinity
1987     SetConsoleTextAttribute
1988     SetConsoleCtrlHandler
1989     setmode
1990     setrlimit
1991     Sleep
1992     strerror_r
1993     sysconf
1994     sysctl
1995     usleep
1996     UTGetOSTypeFromString
1997     VirtualAlloc
1998     wglGetProcAddress
1999 "
2000
2001 TOOLCHAIN_FEATURES="
2002     as_dn_directive
2003     as_fpu_directive
2004     as_func
2005     as_object_arch
2006     asm_mod_q
2007     attribute_may_alias
2008     attribute_packed
2009     ebp_available
2010     ebx_available
2011     gnu_as
2012     gnu_windres
2013     ibm_asm
2014     inline_asm_direct_symbol_refs
2015     inline_asm_labels
2016     inline_asm_nonlocal_labels
2017     pragma_deprecated
2018     rsync_contimeout
2019     symver_asm_label
2020     symver_gnu_asm
2021     vfp_args
2022     xform_asm
2023     xmm_clobbers
2024 "
2025
2026 TYPES_LIST="
2027     CONDITION_VARIABLE_Ptr
2028     socklen_t
2029     struct_addrinfo
2030     struct_group_source_req
2031     struct_ip_mreq_source
2032     struct_ipv6_mreq
2033     struct_msghdr_msg_flags
2034     struct_pollfd
2035     struct_rusage_ru_maxrss
2036     struct_sctp_event_subscribe
2037     struct_sockaddr_in6
2038     struct_sockaddr_sa_len
2039     struct_sockaddr_storage
2040     struct_stat_st_mtim_tv_nsec
2041     struct_v4l2_frmivalenum_discrete
2042 "
2043
2044 HAVE_LIST="
2045     $ARCH_EXT_LIST
2046     $(add_suffix _external $ARCH_EXT_LIST)
2047     $(add_suffix _inline   $ARCH_EXT_LIST)
2048     $ARCH_FEATURES
2049     $ATOMICS_LIST
2050     $BUILTIN_LIST
2051     $COMPLEX_FUNCS
2052     $HAVE_LIST_CMDLINE
2053     $HAVE_LIST_PUB
2054     $HEADERS_LIST
2055     $INTRINSICS_LIST
2056     $MATH_FUNCS
2057     $SYSTEM_FUNCS
2058     $THREADS_LIST
2059     $TOOLCHAIN_FEATURES
2060     $TYPES_LIST
2061     atomics_native
2062     dos_paths
2063     dxva2_lib
2064     dxva2api_cobj
2065     libc_msvcrt
2066     libdc1394_1
2067     libdc1394_2
2068     makeinfo
2069     makeinfo_html
2070     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2071     perl
2072     pod2man
2073     sdl2
2074     section_data_rel_ro
2075     texi2html
2076     threads
2077     vaapi_drm
2078     vaapi_x11
2079     vdpau_x11
2080     winrt
2081     xlib
2082 "
2083
2084 # options emitted with CONFIG_ prefix but not available on the command line
2085 CONFIG_EXTRA="
2086     aandcttables
2087     ac3dsp
2088     audio_frame_queue
2089     audiodsp
2090     blockdsp
2091     bswapdsp
2092     cabac
2093     dirac_parse
2094     dvprofile
2095     exif
2096     faandct
2097     faanidct
2098     fdctdsp
2099     flacdsp
2100     fmtconvert
2101     frame_thread_encoder
2102     g722dsp
2103     golomb
2104     gplv3
2105     h263dsp
2106     h264chroma
2107     h264dsp
2108     h264parse
2109     h264pred
2110     h264qpel
2111     hpeldsp
2112     huffman
2113     huffyuvdsp
2114     huffyuvencdsp
2115     idctdsp
2116     iirfilter
2117     mdct15
2118     intrax8
2119     iso_media
2120     ividsp
2121     jpegtables
2122     lgplv3
2123     libx262
2124     llauddsp
2125     llviddsp
2126     llvidencdsp
2127     lpc
2128     lzf
2129     me_cmp
2130     mpeg_er
2131     mpegaudio
2132     mpegaudiodsp
2133     mpegvideo
2134     mpegvideoenc
2135     mss34dsp
2136     pixblockdsp
2137     qpeldsp
2138     qsv
2139     qsvdec
2140     qsvenc
2141     rangecoder
2142     riffdec
2143     riffenc
2144     rtpdec
2145     rtpenc_chain
2146     rv34dsp
2147     sinewin
2148     snappy
2149     srtp
2150     startcode
2151     texturedsp
2152     texturedspenc
2153     tpeldsp
2154     vaapi_encode
2155     vc1dsp
2156     videodsp
2157     vp3dsp
2158     vp56dsp
2159     vp8dsp
2160     vt_bt2020
2161     wma_freqs
2162     wmv2dsp
2163 "
2164
2165 CMDLINE_SELECT="
2166     $ARCH_EXT_LIST
2167     $CONFIG_LIST
2168     $HAVE_LIST_CMDLINE
2169     $THREADS_LIST
2170     asm
2171     cross_compile
2172     debug
2173     extra_warnings
2174     logging
2175     lto
2176     optimizations
2177     rpath
2178     stripping
2179 "
2180
2181 PATHS_LIST="
2182     bindir
2183     datadir
2184     docdir
2185     incdir
2186     libdir
2187     mandir
2188     pkgconfigdir
2189     prefix
2190     shlibdir
2191     install_name_dir
2192 "
2193
2194 CMDLINE_SET="
2195     $PATHS_LIST
2196     ar
2197     arch
2198     as
2199     assert_level
2200     build_suffix
2201     cc
2202     objcc
2203     cpu
2204     cross_prefix
2205     custom_allocator
2206     cxx
2207     dep_cc
2208     doxygen
2209     env
2210     extra_version
2211     gas
2212     host_cc
2213     host_cflags
2214     host_ld
2215     host_ldflags
2216     host_libs
2217     host_os
2218     install
2219     ld
2220     ln_s
2221     logfile
2222     malloc_prefix
2223     nm
2224     optflags
2225     pkg_config
2226     pkg_config_flags
2227     progs_suffix
2228     random_seed
2229     ranlib
2230     samples
2231     strip
2232     sws_max_filter_size
2233     sysinclude
2234     sysroot
2235     target_exec
2236     target_os
2237     target_path
2238     target_samples
2239     tempprefix
2240     toolchain
2241     valgrind
2242     yasmexe
2243 "
2244
2245 CMDLINE_APPEND="
2246     extra_cflags
2247     extra_cxxflags
2248     extra_objcflags
2249     host_cppflags
2250 "
2251
2252 # code dependency declarations
2253
2254 # architecture extensions
2255
2256 armv5te_deps="arm"
2257 armv6_deps="arm"
2258 armv6t2_deps="arm"
2259 armv8_deps="aarch64"
2260 neon_deps_any="aarch64 arm"
2261 intrinsics_neon_deps="neon"
2262 vfp_deps_any="aarch64 arm"
2263 vfpv3_deps="vfp"
2264 setend_deps="arm"
2265
2266 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2267
2268 loongson2_deps="mips"
2269 loongson3_deps="mips"
2270 mipsfpu_deps="mips"
2271 mipsdsp_deps="mips"
2272 mipsdspr2_deps="mips"
2273 mips32r2_deps="mips"
2274 mips32r5_deps="mips"
2275 mips32r6_deps="mips"
2276 mips64r2_deps="mips"
2277 mips64r6_deps="mips"
2278 msa_deps="mipsfpu"
2279 mmi_deps="mips"
2280
2281 altivec_deps="ppc"
2282 dcbzl_deps="ppc"
2283 ldbrx_deps="ppc"
2284 ppc4xx_deps="ppc"
2285 vsx_deps="altivec"
2286 power8_deps="vsx"
2287
2288 cpunop_deps="i686"
2289 x86_64_select="i686"
2290 x86_64_suggest="fast_cmov"
2291
2292 amd3dnow_deps="mmx"
2293 amd3dnowext_deps="amd3dnow"
2294 i686_deps="x86"
2295 mmx_deps="x86"
2296 mmxext_deps="mmx"
2297 sse_deps="mmxext"
2298 sse2_deps="sse"
2299 sse3_deps="sse2"
2300 ssse3_deps="sse3"
2301 sse4_deps="ssse3"
2302 sse42_deps="sse4"
2303 aesni_deps="sse42"
2304 avx_deps="sse42"
2305 xop_deps="avx"
2306 fma3_deps="avx"
2307 fma4_deps="avx"
2308 avx2_deps="avx"
2309
2310 mmx_external_deps="yasm"
2311 mmx_inline_deps="inline_asm"
2312 mmx_suggest="mmx_external mmx_inline"
2313
2314 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2315     eval dep=\$${ext}_deps
2316     eval ${ext}_external_deps='"${dep}_external"'
2317     eval ${ext}_inline_deps='"${dep}_inline"'
2318     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2319 done
2320
2321 aligned_stack_if_any="aarch64 ppc x86"
2322 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2323 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2324 fast_unaligned_if_any="aarch64 ppc x86"
2325 simd_align_16_if_any="altivec neon sse"
2326 simd_align_32_if_any="avx"
2327
2328 # system capabilities
2329 symver_if_any="symver_asm_label symver_gnu_asm"
2330 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
2331
2332 # threading support
2333 atomics_gcc_if="sync_val_compare_and_swap"
2334 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2335 atomics_win32_if="MemoryBarrier"
2336 atomics_native_if_any="$ATOMICS_LIST"
2337 w32threads_deps="atomics_native"
2338 threads_if_any="$THREADS_LIST"
2339
2340 # subsystems
2341 dct_select="rdft"
2342 dirac_parse_select="golomb"
2343 error_resilience_select="me_cmp"
2344 faandct_deps="faan fdctdsp"
2345 faanidct_deps="faan idctdsp"
2346 h264dsp_select="startcode"
2347 frame_thread_encoder_deps="encoders threads"
2348 intrax8_select="blockdsp idctdsp"
2349 mdct_select="fft"
2350 mdct15_select="fft"
2351 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2352 mpeg_er_select="error_resilience"
2353 mpegaudio_select="mpegaudiodsp"
2354 mpegaudiodsp_select="dct"
2355 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2356 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2357 vc1dsp_select="h264chroma qpeldsp startcode"
2358 rdft_select="fft"
2359
2360 # decoders / encoders
2361 aac_decoder_select="mdct15 mdct sinewin"
2362 aac_fixed_decoder_select="mdct sinewin"
2363 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2364 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2365 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2366 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2367 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2368 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2369 adpcm_g722_decoder_select="g722dsp"
2370 adpcm_g722_encoder_select="g722dsp"
2371 aic_decoder_select="golomb idctdsp"
2372 alac_encoder_select="lpc"
2373 als_decoder_select="bswapdsp"
2374 amrnb_decoder_select="lsp"
2375 amrwb_decoder_select="lsp"
2376 amv_decoder_select="sp5x_decoder exif"
2377 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2378 ape_decoder_select="bswapdsp llauddsp"
2379 apng_decoder_select="zlib"
2380 apng_encoder_select="llvidencdsp zlib"
2381 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2382 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2383 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2384 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2385 atrac1_decoder_select="mdct sinewin"
2386 atrac3_decoder_select="mdct"
2387 atrac3p_decoder_select="mdct sinewin"
2388 avrn_decoder_select="exif jpegtables"
2389 bink_decoder_select="blockdsp hpeldsp"
2390 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2391 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2392 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2393 cllc_decoder_select="bswapdsp"
2394 comfortnoise_encoder_select="lpc"
2395 cook_decoder_select="audiodsp mdct sinewin"
2396 cscd_decoder_select="lzo"
2397 cscd_decoder_suggest="zlib"
2398 dca_decoder_select="mdct"
2399 dds_decoder_select="texturedsp"
2400 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2401 dnxhd_decoder_select="blockdsp idctdsp"
2402 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2403 dvvideo_decoder_select="dvprofile idctdsp"
2404 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2405 dxa_decoder_select="zlib"
2406 dxv_decoder_select="lzf texturedsp"
2407 eac3_decoder_select="ac3_decoder"
2408 eac3_encoder_select="ac3_encoder"
2409 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2410 eatgq_decoder_select="aandcttables"
2411 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2412 exr_decoder_select="zlib"
2413 ffv1_decoder_select="golomb rangecoder"
2414 ffv1_encoder_select="rangecoder"
2415 ffvhuff_decoder_select="huffyuv_decoder"
2416 ffvhuff_encoder_select="huffyuv_encoder"
2417 fic_decoder_select="golomb"
2418 flac_decoder_select="flacdsp golomb"
2419 flac_encoder_select="bswapdsp flacdsp golomb lpc"
2420 flashsv2_decoder_select="zlib"
2421 flashsv2_encoder_select="zlib"
2422 flashsv_decoder_select="zlib"
2423 flashsv_encoder_select="zlib"
2424 flv_decoder_select="h263_decoder"
2425 flv_encoder_select="h263_encoder"
2426 fourxm_decoder_select="blockdsp bswapdsp"
2427 fraps_decoder_select="bswapdsp huffman"
2428 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2429 g729_decoder_select="audiodsp"
2430 h261_decoder_select="mpegvideo"
2431 h261_encoder_select="aandcttables mpegvideoenc"
2432 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2433 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2434 h263i_decoder_select="h263_decoder"
2435 h263p_decoder_select="h263_decoder"
2436 h263p_encoder_select="h263_encoder"
2437 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2438 h264_decoder_suggest="error_resilience"
2439 hap_decoder_select="snappy texturedsp"
2440 hap_encoder_deps="libsnappy"
2441 hap_encoder_select="texturedspenc"
2442 hevc_decoder_select="bswapdsp cabac golomb videodsp"
2443 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2444 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2445 iac_decoder_select="imc_decoder"
2446 imc_decoder_select="bswapdsp fft mdct sinewin"
2447 indeo3_decoder_select="hpeldsp"
2448 indeo4_decoder_select="ividsp"
2449 indeo5_decoder_select="ividsp"
2450 interplay_video_decoder_select="hpeldsp"
2451 jpegls_decoder_select="golomb mjpeg_decoder"
2452 jpegls_encoder_select="golomb"
2453 jv_decoder_select="blockdsp"
2454 lagarith_decoder_select="llviddsp"
2455 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2456 loco_decoder_select="golomb"
2457 magicyuv_decoder_select="llviddsp"
2458 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2459 metasound_decoder_select="lsp mdct sinewin"
2460 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2461 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2462 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2463 mjpegb_decoder_select="mjpeg_decoder"
2464 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2465 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
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="vc1_decoder mpegvideo"
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="golomb 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"
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_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2613 h264_cuvid_hwaccel_deps="cuda cuvid"
2614 h264_cuvid_hwaccel_select="h264_cuvid_decoder"
2615 h264_d3d11va_hwaccel_deps="d3d11va"
2616 h264_d3d11va_hwaccel_select="h264_decoder"
2617 h264_dxva2_hwaccel_deps="dxva2"
2618 h264_dxva2_hwaccel_select="h264_decoder"
2619 h264_mediacodec_decoder_deps="mediacodec"
2620 h264_mediacodec_hwaccel_deps="mediacodec"
2621 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2622 h264_mmal_decoder_deps="mmal"
2623 h264_mmal_decoder_select="mmal"
2624 h264_mmal_hwaccel_deps="mmal"
2625 h264_omx_encoder_deps="omx"
2626 h264_qsv_hwaccel_deps="libmfx"
2627 h264_vaapi_hwaccel_deps="vaapi"
2628 h264_vaapi_hwaccel_select="h264_decoder"
2629 h264_vda_decoder_deps="vda"
2630 h264_vda_decoder_select="h264_decoder"
2631 h264_vda_hwaccel_deps="vda"
2632 h264_vda_hwaccel_select="h264_decoder"
2633 h264_vda_old_hwaccel_deps="vda"
2634 h264_vda_old_hwaccel_select="h264_decoder"
2635 h264_vdpau_decoder_deps="vdpau"
2636 h264_vdpau_decoder_select="h264_decoder"
2637 h264_vdpau_hwaccel_deps="vdpau"
2638 h264_vdpau_hwaccel_select="h264_decoder"
2639 h264_videotoolbox_hwaccel_deps="videotoolbox"
2640 h264_videotoolbox_hwaccel_select="h264_decoder"
2641 hevc_cuvid_hwaccel_deps="cuda cuvid"
2642 hevc_cuvid_hwaccel_select="hevc_cuvid_decoder"
2643 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2644 hevc_d3d11va_hwaccel_select="hevc_decoder"
2645 hevc_mediacodec_decoder_deps="mediacodec"
2646 hevc_mediacodec_hwaccel_deps="mediacodec"
2647 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2648 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2649 hevc_dxva2_hwaccel_select="hevc_decoder"
2650 hevc_qsv_hwaccel_deps="libmfx"
2651 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2652 hevc_vaapi_hwaccel_select="hevc_decoder"
2653 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2654 hevc_vdpau_hwaccel_select="hevc_decoder"
2655 mjpeg_cuvid_hwaccel_deps="cuda cuvid"
2656 mjpeg_cuvid_hwaccel_select="mjpeg_cuvid_decoder"
2657 mpeg_vdpau_decoder_deps="vdpau"
2658 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2659 mpeg_xvmc_hwaccel_deps="xvmc"
2660 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2661 mpeg1_cuvid_hwaccel_deps="cuda cuvid"
2662 mpeg1_cuvid_hwaccel_select="mpeg1_cuvid_decoder"
2663 mpeg1_vdpau_decoder_deps="vdpau"
2664 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2665 mpeg1_vdpau_hwaccel_deps="vdpau"
2666 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2667 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2668 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2669 mpeg1_xvmc_hwaccel_deps="xvmc"
2670 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2671 mpeg2_crystalhd_decoder_select="crystalhd"
2672 mpeg2_cuvid_hwaccel_deps="cuda cuvid"
2673 mpeg2_cuvid_hwaccel_select="mpeg2_cuvid_decoder"
2674 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2675 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2676 mpeg2_dxva2_hwaccel_deps="dxva2"
2677 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2678 mpeg2_mmal_decoder_deps="mmal"
2679 mpeg2_mmal_decoder_select="mmal"
2680 mpeg2_mmal_hwaccel_deps="mmal"
2681 mpeg2_qsv_hwaccel_deps="libmfx"
2682 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2683 mpeg2_vaapi_hwaccel_deps="vaapi"
2684 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2685 mpeg2_vdpau_hwaccel_deps="vdpau"
2686 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2687 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2688 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2689 mpeg2_xvmc_hwaccel_deps="xvmc"
2690 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2691 mpeg4_crystalhd_decoder_select="crystalhd"
2692 mpeg4_cuvid_hwaccel_deps="cuda cuvid"
2693 mpeg4_cuvid_hwaccel_select="mpeg4_cuvid_decoder"
2694 mpeg4_mediacodec_decoder_deps="mediacodec"
2695 mpeg4_mediacodec_hwaccel_deps="mediacodec"
2696 mpeg4_mmal_decoder_deps="mmal"
2697 mpeg4_mmal_decoder_select="mmal"
2698 mpeg4_mmal_hwaccel_deps="mmal"
2699 mpeg4_omx_encoder_deps="omx"
2700 mpeg4_vaapi_hwaccel_deps="vaapi"
2701 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2702 mpeg4_vdpau_decoder_deps="vdpau"
2703 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2704 mpeg4_vdpau_hwaccel_deps="vdpau"
2705 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2706 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2707 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2708 msmpeg4_crystalhd_decoder_select="crystalhd"
2709 vc1_crystalhd_decoder_select="crystalhd"
2710 vc1_cuvid_hwaccel_deps="cuda cuvid"
2711 vc1_cuvid_hwaccel_select="vc1_cuvid_decoder"
2712 vc1_d3d11va_hwaccel_deps="d3d11va"
2713 vc1_d3d11va_hwaccel_select="vc1_decoder"
2714 vc1_dxva2_hwaccel_deps="dxva2"
2715 vc1_dxva2_hwaccel_select="vc1_decoder"
2716 vc1_mmal_decoder_deps="mmal"
2717 vc1_mmal_decoder_select="mmal"
2718 vc1_mmal_hwaccel_deps="mmal"
2719 vc1_qsv_hwaccel_deps="libmfx"
2720 vc1_qsv_hwaccel_select="qsvdec_vc1"
2721 vc1_vaapi_hwaccel_deps="vaapi"
2722 vc1_vaapi_hwaccel_select="vc1_decoder"
2723 vc1_vdpau_decoder_deps="vdpau"
2724 vc1_vdpau_decoder_select="vc1_decoder"
2725 vc1_vdpau_hwaccel_deps="vdpau"
2726 vc1_vdpau_hwaccel_select="vc1_decoder"
2727 vp8_cuvid_hwaccel_deps="cuda cuvid"
2728 vp8_cuvid_hwaccel_select="vp8_cuvid_decoder"
2729 vp9_cuvid_hwaccel_deps="cuda cuvid"
2730 vp9_cuvid_hwaccel_select="vp9_cuvid_decoder"
2731 vp8_mediacodec_decoder_deps="mediacodec"
2732 vp8_mediacodec_hwaccel_deps="mediacodec"
2733 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2734 vp9_d3d11va_hwaccel_select="vp9_decoder"
2735 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2736 vp9_dxva2_hwaccel_select="vp9_decoder"
2737 vp9_mediacodec_decoder_deps="mediacodec"
2738 vp9_mediacodec_hwaccel_deps="mediacodec"
2739 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2740 vp9_vaapi_hwaccel_select="vp9_decoder"
2741 wmv3_crystalhd_decoder_select="crystalhd"
2742 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2743 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2744 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2745 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2746 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2747
2748 # hardware-accelerated codecs
2749 omx_deps="dlopen pthreads"
2750 omx_extralibs='$ldl'
2751 qsvdec_select="qsv"
2752 qsvenc_select="qsv"
2753 vaapi_encode_deps="vaapi"
2754
2755 hwupload_cuda_filter_deps="cuda"
2756 scale_npp_filter_deps="cuda libnpp"
2757
2758 nvenc_deps="cuda"
2759 nvenc_deps_any="dlopen LoadLibrary"
2760 nvenc_encoder_deps="nvenc"
2761 h264_cuvid_decoder_deps="cuda cuvid"
2762 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2763 h264_nvenc_encoder_deps="nvenc"
2764 h264_qsv_decoder_deps="libmfx"
2765 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2766 h264_qsv_encoder_deps="libmfx"
2767 h264_qsv_encoder_select="qsvenc"
2768 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2769 h264_vaapi_encoder_select="vaapi_encode golomb"
2770
2771 hevc_cuvid_decoder_deps="cuda cuvid"
2772 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2773 hevc_nvenc_encoder_deps="nvenc"
2774 hevc_qsv_decoder_deps="libmfx"
2775 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2776 hevc_qsv_encoder_deps="libmfx"
2777 hevc_qsv_encoder_select="qsvenc"
2778 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2779 hevc_vaapi_encoder_select="vaapi_encode golomb"
2780 mjpeg_cuvid_decoder_deps="cuda cuvid"
2781 mpeg1_cuvid_decoder_deps="cuda cuvid"
2782 mpeg2_cuvid_decoder_deps="cuda cuvid"
2783 mpeg2_qsv_decoder_deps="libmfx"
2784 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2785 mpeg2_qsv_encoder_deps="libmfx"
2786 mpeg2_qsv_encoder_select="qsvenc"
2787 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2788 mpeg2_vaapi_encoder_select="vaapi_encode"
2789 mpeg4_cuvid_decoder_deps="cuda cuvid"
2790 nvenc_h264_encoder_deps="nvenc"
2791 nvenc_hevc_encoder_deps="nvenc"
2792
2793 vc1_cuvid_decoder_deps="cuda cuvid"
2794 vp8_cuvid_decoder_deps="cuda cuvid"
2795 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2796 vp8_vaapi_encoder_select="vaapi_encode"
2797 vp9_cuvid_decoder_deps="cuda cuvid"
2798
2799 # parsers
2800 h264_parser_select="golomb h264dsp h264parse"
2801 hevc_parser_select="golomb"
2802 mpegvideo_parser_select="mpegvideo"
2803 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2804 vc1_parser_select="vc1dsp"
2805
2806 # bitstream_filters
2807 mjpeg2jpeg_bsf_select="jpegtables"
2808
2809 # external libraries
2810 aac_at_decoder_deps="audiotoolbox"
2811 ac3_at_decoder_deps="audiotoolbox"
2812 ac3_at_decoder_select="ac3_parser"
2813 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2814 alac_at_decoder_deps="audiotoolbox"
2815 amr_nb_at_decoder_deps="audiotoolbox"
2816 avisynth_deps_any="dlopen LoadLibrary"
2817 avisynth_demuxer_deps="avisynth"
2818 avisynth_demuxer_select="riffdec"
2819 eac3_at_decoder_deps="audiotoolbox"
2820 eac3_at_decoder_select="ac3_parser"
2821 gsm_ms_at_decoder_deps="audiotoolbox"
2822 ilbc_at_decoder_deps="audiotoolbox"
2823 mp1_at_decoder_deps="audiotoolbox"
2824 mp2_at_decoder_deps="audiotoolbox"
2825 mp3_at_decoder_deps="audiotoolbox"
2826 pcm_alaw_at_decoder_deps="audiotoolbox"
2827 pcm_mulaw_at_decoder_deps="audiotoolbox"
2828 qdmc_at_decoder_deps="audiotoolbox"
2829 qdm2_at_decoder_deps="audiotoolbox"
2830 aac_at_encoder_deps="audiotoolbox"
2831 aac_at_encoder_select="audio_frame_queue"
2832 alac_at_encoder_deps="audiotoolbox"
2833 alac_at_encoder_select="audio_frame_queue"
2834 ilbc_at_encoder_deps="audiotoolbox"
2835 ilbc_at_encoder_select="audio_frame_queue"
2836 pcm_alaw_at_encoder_deps="audiotoolbox"
2837 pcm_alaw_at_encoder_select="audio_frame_queue"
2838 pcm_mulaw_at_encoder_deps="audiotoolbox"
2839 pcm_mulaw_at_encoder_select="audio_frame_queue"
2840 chromaprint_muxer_deps="chromaprint"
2841 h264_videotoolbox_encoder_deps="videotoolbox_encoder pthreads"
2842 libcelt_decoder_deps="libcelt"
2843 libfdk_aac_decoder_deps="libfdk_aac"
2844 libfdk_aac_encoder_deps="libfdk_aac"
2845 libfdk_aac_encoder_select="audio_frame_queue"
2846 libgme_demuxer_deps="libgme"
2847 libgsm_decoder_deps="libgsm"
2848 libgsm_encoder_deps="libgsm"
2849 libgsm_ms_decoder_deps="libgsm"
2850 libgsm_ms_encoder_deps="libgsm"
2851 libilbc_decoder_deps="libilbc"
2852 libilbc_encoder_deps="libilbc"
2853 libkvazaar_encoder_deps="libkvazaar"
2854 libmodplug_demuxer_deps="libmodplug"
2855 libmp3lame_encoder_deps="libmp3lame"
2856 libmp3lame_encoder_select="audio_frame_queue"
2857 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2858 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2859 libopencore_amrnb_encoder_select="audio_frame_queue"
2860 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2861 libopenh264_decoder_deps="libopenh264"
2862 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2863 libopenh264_encoder_deps="libopenh264"
2864 libopenjpeg_decoder_deps="libopenjpeg"
2865 libopenjpeg_encoder_deps="libopenjpeg"
2866 libopenmpt_demuxer_deps="libopenmpt"
2867 libopus_decoder_deps="libopus"
2868 libopus_encoder_deps="libopus"
2869 libopus_encoder_select="audio_frame_queue"
2870 libschroedinger_decoder_deps="libschroedinger"
2871 libschroedinger_encoder_deps="libschroedinger"
2872 libshine_encoder_deps="libshine"
2873 libshine_encoder_select="audio_frame_queue"
2874 libspeex_decoder_deps="libspeex"
2875 libspeex_encoder_deps="libspeex"
2876 libspeex_encoder_select="audio_frame_queue"
2877 libtheora_encoder_deps="libtheora"
2878 libtwolame_encoder_deps="libtwolame"
2879 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2880 libvorbis_decoder_deps="libvorbis"
2881 libvorbis_encoder_deps="libvorbis"
2882 libvorbis_encoder_select="audio_frame_queue"
2883 libvpx_vp8_decoder_deps="libvpx"
2884 libvpx_vp8_encoder_deps="libvpx"
2885 libvpx_vp9_decoder_deps="libvpx"
2886 libvpx_vp9_encoder_deps="libvpx"
2887 libwavpack_encoder_deps="libwavpack"
2888 libwebp_encoder_deps="libwebp"
2889 libwebp_anim_encoder_deps="libwebp"
2890 libx262_encoder_deps="libx262"
2891 libx264_encoder_deps="libx264"
2892 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2893 libx264rgb_encoder_select="libx264_encoder"
2894 libx265_encoder_deps="libx265"
2895 libxavs_encoder_deps="libxavs"
2896 libxvid_encoder_deps="libxvid"
2897 libzvbi_teletext_decoder_deps="libzvbi"
2898 videotoolbox_deps="VideoToolbox_VideoToolbox_h"
2899 videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework CoreVideo"
2900 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2901 videotoolbox_encoder_suggest="vda_framework vt_bt2020"
2902 vt_bt2020_deps="kCVImageBufferColorPrimaries_ITU_R_2020"
2903
2904 # demuxers / muxers
2905 ac3_demuxer_select="ac3_parser"
2906 aiff_muxer_select="iso_media"
2907 asf_demuxer_select="riffdec"
2908 asf_o_demuxer_select="riffdec"
2909 asf_muxer_select="riffenc"
2910 asf_stream_muxer_select="asf_muxer"
2911 avi_demuxer_select="iso_media riffdec exif"
2912 avi_muxer_select="riffenc"
2913 caf_demuxer_select="iso_media riffdec"
2914 caf_muxer_select="iso_media"
2915 dash_muxer_select="mp4_muxer"
2916 dirac_demuxer_select="dirac_parser"
2917 dts_demuxer_select="dca_parser"
2918 dtshd_demuxer_select="dca_parser"
2919 dv_demuxer_select="dvprofile"
2920 dv_muxer_select="dvprofile"
2921 dxa_demuxer_select="riffdec"
2922 eac3_demuxer_select="ac3_parser"
2923 f4v_muxer_select="mov_muxer"
2924 fifo_muxer_deps="threads"
2925 flac_demuxer_select="flac_parser"
2926 hds_muxer_select="flv_muxer"
2927 hls_muxer_select="mpegts_muxer"
2928 image2_alias_pix_demuxer_select="image2_demuxer"
2929 image2_brender_pix_demuxer_select="image2_demuxer"
2930 ipod_muxer_select="mov_muxer"
2931 ismv_muxer_select="mov_muxer"
2932 libnut_demuxer_deps="libnut"
2933 libnut_muxer_deps="libnut"
2934 matroska_audio_muxer_select="matroska_muxer"
2935 matroska_demuxer_select="iso_media riffdec"
2936 matroska_demuxer_suggest="bzlib lzo zlib"
2937 matroska_muxer_select="iso_media riffenc"
2938 mmf_muxer_select="riffenc"
2939 mov_demuxer_select="iso_media riffdec"
2940 mov_demuxer_suggest="zlib"
2941 mov_muxer_select="iso_media riffenc rtpenc_chain"
2942 mp3_demuxer_select="mpegaudio_parser"
2943 mp4_muxer_select="mov_muxer"
2944 mpegts_demuxer_select="iso_media"
2945 mpegts_muxer_select="adts_muxer latm_muxer"
2946 mpegtsraw_demuxer_select="mpegts_demuxer"
2947 mxf_d10_muxer_select="mxf_muxer"
2948 mxf_opatom_muxer_select="mxf_muxer"
2949 nut_muxer_select="riffenc"
2950 nuv_demuxer_select="riffdec"
2951 oga_muxer_select="ogg_muxer"
2952 ogg_demuxer_select="dirac_parse"
2953 ogv_muxer_select="ogg_muxer"
2954 opus_muxer_select="ogg_muxer"
2955 psp_muxer_select="mov_muxer"
2956 rtp_demuxer_select="sdp_demuxer"
2957 rtp_muxer_select="golomb"
2958 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2959 rtsp_demuxer_select="http_protocol rtpdec"
2960 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2961 sap_demuxer_select="sdp_demuxer"
2962 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2963 sdp_demuxer_select="rtpdec"
2964 smoothstreaming_muxer_select="ismv_muxer"
2965 spdif_muxer_select="aac_parser"
2966 spx_muxer_select="ogg_muxer"
2967 swf_demuxer_suggest="zlib"
2968 tak_demuxer_select="tak_parser"
2969 tg2_muxer_select="mov_muxer"
2970 tgp_muxer_select="mov_muxer"
2971 vobsub_demuxer_select="mpegps_demuxer"
2972 w64_demuxer_select="wav_demuxer"
2973 w64_muxer_select="wav_muxer"
2974 wav_demuxer_select="riffdec"
2975 wav_muxer_select="riffenc"
2976 webm_muxer_select="iso_media riffenc"
2977 webm_dash_manifest_demuxer_select="matroska_demuxer"
2978 wtv_demuxer_select="mpegts_demuxer riffdec"
2979 wtv_muxer_select="mpegts_muxer riffenc"
2980 xmv_demuxer_select="riffdec"
2981 xwma_demuxer_select="riffdec"
2982
2983 # indevs / outdevs
2984 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2985 alsa_outdev_deps="alsa_asoundlib_h"
2986 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2987 avfoundation_indev_select="avfoundation"
2988 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2989 caca_outdev_deps="libcaca"
2990 decklink_indev_deps="decklink pthreads"
2991 decklink_indev_extralibs="-lstdc++"
2992 decklink_outdev_deps="decklink pthreads"
2993 decklink_outdev_extralibs="-lstdc++"
2994 dshow_indev_deps="IBaseFilter"
2995 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
2996 dv1394_indev_deps="dv1394"
2997 dv1394_indev_select="dv_demuxer"
2998 fbdev_indev_deps="linux_fb_h"
2999 fbdev_outdev_deps="linux_fb_h"
3000 gdigrab_indev_deps="CreateDIBSection"
3001 gdigrab_indev_extralibs="-lgdi32"
3002 gdigrab_indev_select="bmp_decoder"
3003 iec61883_indev_deps="libiec61883"
3004 jack_indev_deps="jack_jack_h"
3005 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3006 lavfi_indev_deps="avfilter"
3007 libcdio_indev_deps="libcdio"
3008 libdc1394_indev_deps="libdc1394"
3009 libv4l2_indev_deps="libv4l2"
3010 openal_indev_deps="openal"
3011 opengl_outdev_deps="opengl"
3012 oss_indev_deps_any="soundcard_h sys_soundcard_h"
3013 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
3014 pulse_indev_deps="libpulse"
3015 pulse_outdev_deps="libpulse"
3016 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
3017 qtkit_indev_select="qtkit"
3018 sdl2_outdev_deps="sdl2"
3019 sndio_indev_deps="sndio_h"
3020 sndio_outdev_deps="sndio_h"
3021 v4l_indev_deps="linux_videodev_h"
3022 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3023 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3024 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
3025 vfwcap_indev_extralibs="-lavicap32"
3026 xcbgrab_indev_deps="libxcb"
3027 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3028 xv_outdev_extralibs="-lXv -lX11 -lXext"
3029
3030 # protocols
3031 async_protocol_deps="threads"
3032 bluray_protocol_deps="libbluray"
3033 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
3034 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3035 ffrtmpcrypt_protocol_select="tcp_protocol"
3036 ffrtmphttp_protocol_deps="!librtmp_protocol"
3037 ffrtmphttp_protocol_select="http_protocol"
3038 ftp_protocol_select="tcp_protocol"
3039 gopher_protocol_select="network"
3040 http_protocol_select="tcp_protocol"
3041 httpproxy_protocol_select="tcp_protocol"
3042 https_protocol_select="tls_protocol"
3043 icecast_protocol_select="http_protocol"
3044 librtmp_protocol_deps="librtmp"
3045 librtmpe_protocol_deps="librtmp"
3046 librtmps_protocol_deps="librtmp"
3047 librtmpt_protocol_deps="librtmp"
3048 librtmpte_protocol_deps="librtmp"
3049 libsmbclient_protocol_deps="libsmbclient gplv3"
3050 libssh_protocol_deps="libssh"
3051 mmsh_protocol_select="http_protocol"
3052 mmst_protocol_select="network"
3053 rtmp_protocol_deps="!librtmp_protocol"
3054 rtmp_protocol_select="tcp_protocol"
3055 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3056 rtmps_protocol_deps="!librtmp_protocol"
3057 rtmps_protocol_select="tls_protocol"
3058 rtmpt_protocol_select="ffrtmphttp_protocol"
3059 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3060 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3061 rtp_protocol_select="udp_protocol"
3062 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3063 sctp_protocol_select="network"
3064 srtp_protocol_select="rtp_protocol srtp"
3065 tcp_protocol_select="network"
3066 tls_gnutls_protocol_deps="gnutls !tls_schannel_protocol !tls_securetransport_protocol"
3067 tls_gnutls_protocol_select="tcp_protocol"
3068 tls_openssl_protocol_deps="openssl !tls_schannel_protocol !tls_securetransport_protocol !tls_gnutls_protocol"
3069 tls_openssl_protocol_select="tcp_protocol"
3070 tls_schannel_protocol_deps="schannel"
3071 tls_schannel_protocol_select="tcp_protocol"
3072 tls_securetransport_protocol_deps="securetransport"
3073 tls_securetransport_protocol_select="tcp_protocol"
3074 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
3075 udp_protocol_select="network"
3076 udplite_protocol_select="network"
3077 unix_protocol_deps="sys_un_h"
3078 unix_protocol_select="network"
3079
3080 # filters
3081 afftfilt_filter_deps="avcodec"
3082 afftfilt_filter_select="fft"
3083 amovie_filter_deps="avcodec avformat"
3084 aresample_filter_deps="swresample"
3085 ass_filter_deps="libass"
3086 atempo_filter_deps="avcodec"
3087 atempo_filter_select="rdft"
3088 azmq_filter_deps="libzmq"
3089 blackframe_filter_deps="gpl"
3090 boxblur_filter_deps="gpl"
3091 bs2b_filter_deps="libbs2b"
3092 colormatrix_filter_deps="gpl"
3093 cover_rect_filter_deps="avcodec avformat gpl"
3094 cropdetect_filter_deps="gpl"
3095 deinterlace_qsv_filter_deps="libmfx"
3096 deinterlace_vaapi_filter_deps="vaapi"
3097 delogo_filter_deps="gpl"
3098 deshake_filter_select="pixelutils"
3099 drawtext_filter_deps="libfreetype"
3100 eq_filter_deps="gpl"
3101 fftfilt_filter_deps="avcodec"
3102 fftfilt_filter_select="rdft"
3103 find_rect_filter_deps="avcodec avformat gpl"
3104 firequalizer_filter_deps="avcodec"
3105 firequalizer_filter_select="rdft"
3106 flite_filter_deps="libflite"
3107 framerate_filter_select="pixelutils"
3108 frei0r_filter_deps="frei0r dlopen"
3109 frei0r_src_filter_deps="frei0r dlopen"
3110 fspp_filter_deps="gpl"
3111 geq_filter_deps="gpl"
3112 histeq_filter_deps="gpl"
3113 hqdn3d_filter_deps="gpl"
3114 interlace_filter_deps="gpl"
3115 kerndeint_filter_deps="gpl"
3116 ladspa_filter_deps="ladspa dlopen"
3117 mcdeint_filter_deps="avcodec gpl"
3118 movie_filter_deps="avcodec avformat"
3119 mpdecimate_filter_deps="gpl"
3120 mpdecimate_filter_select="pixelutils"
3121 mptestsrc_filter_deps="gpl"
3122 negate_filter_deps="lut_filter"
3123 nnedi_filter_deps="gpl"
3124 ocr_filter_deps="libtesseract"
3125 ocv_filter_deps="libopencv"
3126 owdenoise_filter_deps="gpl"
3127 pan_filter_deps="swresample"
3128 perspective_filter_deps="gpl"
3129 phase_filter_deps="gpl"
3130 pp7_filter_deps="gpl"
3131 pp_filter_deps="gpl postproc"
3132 pullup_filter_deps="gpl"
3133 removelogo_filter_deps="avcodec avformat swscale"
3134 repeatfields_filter_deps="gpl"
3135 resample_filter_deps="avresample"
3136 rubberband_filter_deps="librubberband"
3137 sab_filter_deps="gpl swscale"
3138 scale2ref_filter_deps="swscale"
3139 scale_filter_deps="swscale"
3140 scale_qsv_filter_deps="libmfx"
3141 select_filter_select="pixelutils"
3142 showcqt_filter_deps="avcodec avformat swscale"
3143 showcqt_filter_select="fft"
3144 showfreqs_filter_deps="avcodec"
3145 showfreqs_filter_select="fft"
3146 showspectrum_filter_deps="avcodec"
3147 showspectrum_filter_select="fft"
3148 showspectrumpic_filter_deps="avcodec"
3149 showspectrumpic_filter_select="fft"
3150 signature_filter_deps="gpl avcodec avformat"
3151 smartblur_filter_deps="gpl swscale"
3152 sofalizer_filter_deps="netcdf avcodec"
3153 sofalizer_filter_select="fft"
3154 spectrumsynth_filter_deps="avcodec"
3155 spectrumsynth_filter_select="fft"
3156 spp_filter_deps="gpl avcodec"
3157 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3158 stereo3d_filter_deps="gpl"
3159 subtitles_filter_deps="avformat avcodec libass"
3160 super2xsai_filter_deps="gpl"
3161 pixfmts_super2xsai_test_deps="super2xsai_filter"
3162 tinterlace_filter_deps="gpl"
3163 tinterlace_merge_test_deps="tinterlace_filter"
3164 tinterlace_pad_test_deps="tinterlace_filter"
3165 uspp_filter_deps="gpl avcodec"
3166 vaguedenoiser_filter_deps="gpl"
3167 vidstabdetect_filter_deps="libvidstab"
3168 vidstabtransform_filter_deps="libvidstab"
3169 zmq_filter_deps="libzmq"
3170 zoompan_filter_deps="swscale"
3171 zscale_filter_deps="libzimg"
3172 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3173
3174 # examples
3175 avio_dir_cmd_deps="avformat avutil"
3176 avio_reading_deps="avformat avcodec avutil"
3177 decode_audio_example_deps="avcodec avutil"
3178 decode_video_example_deps="avcodec avutil"
3179 demuxing_decoding_example_deps="avcodec avformat avutil"
3180 encode_audio_example_deps="avcodec avutil"
3181 encode_video_example_deps="avcodec avutil"
3182 extract_mvs_example_deps="avcodec avformat avutil"
3183 filter_audio_example_deps="avfilter avutil"
3184 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3185 filtering_video_example_deps="avfilter avcodec avformat avutil"
3186 http_multiclient_example_deps="avformat avutil fork"
3187 metadata_example_deps="avformat avutil"
3188 muxing_example_deps="avcodec avformat avutil swscale"
3189 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
3190 remuxing_example_deps="avcodec avformat avutil"
3191 resampling_audio_example_deps="avutil swresample"
3192 scaling_video_example_deps="avutil swscale"
3193 transcode_aac_example_deps="avcodec avformat swresample"
3194 transcoding_example_deps="avfilter avcodec avformat avutil"
3195
3196 # libraries, in linking order
3197 avcodec_deps="avutil"
3198 avdevice_deps="avformat avcodec avutil"
3199 avfilter_deps="avutil"
3200 avformat_deps="avcodec avutil"
3201 avresample_deps="avutil"
3202 postproc_deps="avutil gpl"
3203 swresample_deps="avutil"
3204 swscale_deps="avutil"
3205
3206 # programs
3207 ffmpeg_deps="avcodec avfilter avformat swresample"
3208 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3209                null_filter
3210                trim_filter"
3211 ffplay_deps="avcodec avformat swscale swresample sdl2"
3212 ffplay_libs='$sdl2_libs'
3213 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3214 ffprobe_deps="avcodec avformat"
3215 ffserver_deps="avformat fork sarestart"
3216 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3217
3218 # documentation
3219 podpages_deps="perl"
3220 manpages_deps="perl pod2man"
3221 htmlpages_deps="perl"
3222 htmlpages_deps_any="makeinfo_html texi2html"
3223 txtpages_deps="perl makeinfo"
3224 doc_deps_any="manpages htmlpages podpages txtpages"
3225
3226 # default parameters
3227
3228 logfile="config.log"
3229
3230 # installation paths
3231 prefix_default="/usr/local"
3232 bindir_default='${prefix}/bin'
3233 datadir_default='${prefix}/share/ffmpeg'
3234 docdir_default='${prefix}/share/doc/ffmpeg'
3235 incdir_default='${prefix}/include'
3236 libdir_default='${prefix}/lib'
3237 mandir_default='${prefix}/share/man'
3238
3239 # toolchain
3240 ar_default="ar"
3241 cc_default="gcc"
3242 cxx_default="g++"
3243 host_cc_default="gcc"
3244 cp_f="cp -f"
3245 doxygen_default="doxygen"
3246 install="install"
3247 ln_s_default="ln -s -f"
3248 nm_default="nm -g"
3249 objformat="elf"
3250 pkg_config_default=pkg-config
3251 ranlib_default="ranlib"
3252 strip_default="strip"
3253 version_script='--version-script'
3254 yasmexe_default="yasm"
3255 windres_default="windres"
3256
3257 # OS
3258 target_os_default=$(tolower $(uname -s))
3259 host_os=$target_os_default
3260
3261 # machine
3262 if test "$target_os_default" = aix; then
3263     arch_default=$(uname -p)
3264     strip_default="strip -X32_64"
3265 else
3266     arch_default=$(uname -m)
3267 fi
3268 cpu="generic"
3269 intrinsics="none"
3270
3271 # configurable options
3272 enable $PROGRAM_LIST
3273 enable $DOCUMENT_LIST
3274 enable $EXAMPLE_LIST
3275 enable $(filter_out avresample $LIBRARY_LIST)
3276 enable stripping
3277
3278 enable asm
3279 enable debug
3280 enable doc
3281 enable faan faandct faanidct
3282 enable optimizations
3283 enable runtime_cpudetect
3284 enable safe_bitstream_reader
3285 enable static
3286 enable swscale_alpha
3287 enable valgrind_backtrace
3288
3289 sws_max_filter_size_default=256
3290 set_default sws_max_filter_size
3291
3292 # build settings
3293 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3294 LIBPREF="lib"
3295 LIBSUF=".a"
3296 FULLNAME='$(NAME)$(BUILDSUF)'
3297 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3298 SLIBPREF="lib"
3299 SLIBSUF=".so"
3300 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3301 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3302 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3303 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3304 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3305 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3306 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3307
3308 asflags_filter=echo
3309 cflags_filter=echo
3310 ldflags_filter=echo
3311
3312 AS_C='-c'
3313 AS_O='-o $@'
3314 CC_C='-c'
3315 CC_E='-E -o $@'
3316 CC_O='-o $@'
3317 CXX_C='-c'
3318 CXX_O='-o $@'
3319 OBJCC_C='-c'
3320 OBJCC_E='-E -o $@'
3321 OBJCC_O='-o $@'
3322 LD_O='-o $@'
3323 LD_LIB='-l%'
3324 LD_PATH='-L'
3325 HOSTCC_C='-c'
3326 HOSTCC_E='-E -o $@'
3327 HOSTCC_O='-o $@'
3328 HOSTLD_O='-o $@'
3329
3330 host_libs='-lm'
3331 host_cflags_filter=echo
3332 host_ldflags_filter=echo
3333
3334 target_path='$(CURDIR)'
3335
3336 # since the object filename is not given with the -MM flag, the compiler
3337 # is only able to print the basename, and we must add the path ourselves
3338 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3339 DEPFLAGS='-MM'
3340
3341 # find source path
3342 if test -f configure; then
3343     source_path=.
3344 else
3345     source_path=$(cd $(dirname "$0"); pwd)
3346     case "$source_path" in
3347         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3348     esac
3349     test -e "$source_path/config.h" &&
3350         die "Out of tree builds are impossible with config.h in source dir."
3351 fi
3352
3353 for v in "$@"; do
3354     r=${v#*=}
3355     l=${v%"$r"}
3356     r=$(sh_quote "$r")
3357     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3358 done
3359
3360 find_things(){
3361     thing=$1
3362     pattern=$2
3363     file=$source_path/$3
3364     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3365 }
3366
3367 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3368 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3369 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3370 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3371 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3372 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3373 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3374 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3375 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3376
3377 find_things_extern(){
3378     thing=$1
3379     pattern=$2
3380     file=$source_path/$3
3381     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3382 }
3383
3384 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3385 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3386
3387 ALL_COMPONENTS="
3388     $BSF_LIST
3389     $DECODER_LIST
3390     $DEMUXER_LIST
3391     $ENCODER_LIST
3392     $FILTER_LIST
3393     $HWACCEL_LIST
3394     $INDEV_LIST
3395     $MUXER_LIST
3396     $OUTDEV_LIST
3397     $PARSER_LIST
3398     $PROTOCOL_LIST
3399 "
3400
3401 for n in $COMPONENT_LIST; do
3402     v=$(toupper ${n%s})_LIST
3403     eval enable \$$v
3404     eval ${n}_if_any="\$$v"
3405 done
3406
3407 enable $ARCH_EXT_LIST
3408
3409 die_unknown(){
3410     echo "Unknown option \"$1\"."
3411     echo "See $0 --help for available options."
3412     exit 1
3413 }
3414
3415 print_in_columns() {
3416     cols=$(expr $ncols / 24)
3417     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3418 }
3419
3420 show_list() {
3421     suffix=_$1
3422     shift
3423     echo $* | sed s/$suffix//g | print_in_columns
3424     exit 0
3425 }
3426
3427 rand_list(){
3428     IFS=', '
3429     set -- $*
3430     unset IFS
3431     for thing; do
3432         comp=${thing%:*}
3433         prob=${thing#$comp}
3434         prob=${prob#:}
3435         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3436         echo "prob ${prob:-0.5}"
3437         printf '%s\n' $comp
3438     done
3439 }
3440
3441 do_random(){
3442     action=$1
3443     shift
3444     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3445     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3446 }
3447
3448 for opt do
3449     optval="${opt#*=}"
3450     case "$opt" in
3451         --extra-ldflags=*)
3452             add_ldflags $optval
3453         ;;
3454         --extra-ldexeflags=*)
3455             add_ldexeflags $optval
3456         ;;
3457         --extra-ldlibflags=*)
3458             add_ldlibflags $optval
3459         ;;
3460         --extra-libs=*)
3461             add_extralibs $optval
3462         ;;
3463         --disable-devices)
3464             disable $INDEV_LIST $OUTDEV_LIST
3465         ;;
3466         --enable-debug=*)
3467             debuglevel="$optval"
3468         ;;
3469         --disable-programs)
3470             disable $PROGRAM_LIST
3471         ;;
3472         --disable-everything)
3473             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3474         ;;
3475         --disable-all)
3476             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3477             disable $LIBRARY_LIST $PROGRAM_LIST doc
3478             enable avutil
3479         ;;
3480         --enable-random|--disable-random)
3481             action=${opt%%-random}
3482             do_random ${action#--} $COMPONENT_LIST
3483         ;;
3484         --enable-random=*|--disable-random=*)
3485             action=${opt%%-random=*}
3486             do_random ${action#--} $optval
3487         ;;
3488         --enable-*=*|--disable-*=*)
3489             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3490             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3491             eval list=\$$(toupper $thing)_LIST
3492             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3493             list=$(filter "$name" $list)
3494             [ "$list" = "" ] && warn "Option $opt did not match anything"
3495             $action $list
3496         ;;
3497         --enable-?*|--disable-?*)
3498             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3499             if is_in $option $COMPONENT_LIST; then
3500                 test $action = disable && action=unset
3501                 eval $action \$$(toupper ${option%s})_LIST
3502             elif is_in $option $CMDLINE_SELECT; then
3503                 $action $option
3504             else
3505                 die_unknown $opt
3506             fi
3507         ;;
3508         --list-*)
3509             NAME="${opt#--list-}"
3510             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3511             NAME=${NAME%s}
3512             eval show_list $NAME \$$(toupper $NAME)_LIST
3513         ;;
3514         --help|-h) show_help
3515         ;;
3516         --quiet|-q) quiet=yes
3517         ;;
3518         --fatal-warnings) enable fatal_warnings
3519         ;;
3520         *)
3521             optname="${opt%%=*}"
3522             optname="${optname#--}"
3523             optname=$(echo "$optname" | sed 's/-/_/g')
3524             if is_in $optname $CMDLINE_SET; then
3525                 eval $optname='$optval'
3526             elif is_in $optname $CMDLINE_APPEND; then
3527                 append $optname "$optval"
3528             else
3529                 die_unknown $opt
3530             fi
3531         ;;
3532     esac
3533 done
3534
3535 for e in $env; do
3536     eval "export $e"
3537 done
3538
3539 # Mark specifically enabled, but normally autodetected libraries as requested.
3540 for lib in $AUTODETECT_LIBS; do
3541     enabled $lib && request $lib
3542 done
3543
3544 # Enable platform codecs by default.
3545 enable_weak audiotoolbox
3546
3547 # Enable hwaccels by default.
3548 enable_weak d3d11va dxva2 vaapi vda vdpau videotoolbox_hwaccel xvmc
3549 enable_weak xlib
3550
3551 enable_weak cuda cuvid nvenc vda_framework videotoolbox videotoolbox_encoder
3552
3553 disabled logging && logfile=/dev/null
3554
3555 die_license_disabled() {
3556     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3557 }
3558
3559 die_license_disabled_gpl() {
3560     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3561 }
3562
3563 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3564 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3565
3566 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3567 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3568
3569 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3570
3571 # Disable all the library-specific components if the library itself
3572 # is disabled, see AVCODEC_LIST and following _LIST variables.
3573
3574 disable_components(){
3575     disabled ${1} && disable $(
3576         eval components="\$$(toupper ${1})_COMPONENTS"
3577         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3578     )
3579 }
3580
3581 map 'disable_components $v' $LIBRARY_LIST
3582
3583 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3584 set >> $logfile
3585
3586 test -n "$valgrind" && toolchain="valgrind-memcheck"
3587
3588 case "$toolchain" in
3589     *-asan)
3590         cc_default="${toolchain%-asan}"
3591         add_cflags  -fsanitize=address
3592         add_ldflags -fsanitize=address
3593     ;;
3594     *-msan)
3595         cc_default="${toolchain%-msan}"
3596         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3597         add_ldflags -fsanitize=memory
3598     ;;
3599     *-tsan)
3600         cc_default="${toolchain%-tsan}"
3601         add_cflags  -fsanitize=thread -fPIE
3602         add_ldflags -fsanitize=thread -pie
3603         case "$toolchain" in
3604             gcc-tsan)
3605                 add_cflags  -fPIC
3606                 add_ldflags -fPIC
3607                 ;;
3608         esac
3609     ;;
3610     *-usan)
3611         cc_default="${toolchain%-usan}"
3612         add_cflags  -fsanitize=undefined
3613         add_ldflags -fsanitize=undefined
3614     ;;
3615     valgrind-*)
3616         target_exec_default="valgrind"
3617         case "$toolchain" in
3618             valgrind-massif)
3619                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3620                 ;;
3621             valgrind-memcheck)
3622                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3623                 ;;
3624         esac
3625     ;;
3626     msvc)
3627         # Check whether the current MSVC version needs the C99 converter.
3628         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3629         # support enough of C99 to build ffmpeg. Default to the new
3630         # behaviour if the regexp was unable to match anything, since this
3631         # successfully parses the version number of existing supported
3632         # versions that require the converter (MSVC 2010 and 2012).
3633         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3634         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3635             cc_default="cl"
3636         else
3637             cc_default="c99wrap cl"
3638         fi
3639         ld_default="$source_path/compat/windows/mslink"
3640         nm_default="dumpbin -symbols"
3641         ar_default="lib"
3642         case "$arch" in
3643         arm*)
3644             as_default="armasm"
3645             ;;
3646         esac
3647         target_os_default="win32"
3648         # Use a relative path for TMPDIR. This makes sure all the
3649         # ffconf temp files are written with a relative path, avoiding
3650         # issues with msys/win32 path conversion for MSVC parameters
3651         # such as -Fo<file> or -out:<file>.
3652         TMPDIR=.
3653     ;;
3654     icl)
3655         cc_default="icl"
3656         ld_default="xilink"
3657         nm_default="dumpbin -symbols"
3658         ar_default="xilib"
3659         target_os_default="win32"
3660         TMPDIR=.
3661     ;;
3662     gcov)
3663         add_cflags  -fprofile-arcs -ftest-coverage
3664         add_ldflags -fprofile-arcs -ftest-coverage
3665     ;;
3666     llvm-cov)
3667         add_cflags -fprofile-arcs -ftest-coverage
3668         add_ldflags --coverage
3669     ;;
3670     hardened)
3671         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3672         add_cflags   -fno-strict-overflow -fstack-protector-all
3673         add_ldflags  -Wl,-z,relro -Wl,-z,now
3674         add_cflags   -fPIE
3675         add_ldexeflags -fPIE -pie
3676     ;;
3677     ?*)
3678         die "Unknown toolchain $toolchain"
3679     ;;
3680 esac
3681
3682 test -n "$cross_prefix" && enable cross_compile
3683
3684 if enabled cross_compile; then
3685     test -n "$arch" && test -n "$target_os" ||
3686         die "Must specify target arch and OS when cross-compiling"
3687 fi
3688
3689 ar_default="${cross_prefix}${ar_default}"
3690 cc_default="${cross_prefix}${cc_default}"
3691 cxx_default="${cross_prefix}${cxx_default}"
3692 nm_default="${cross_prefix}${nm_default}"
3693 pkg_config_default="${cross_prefix}${pkg_config_default}"
3694 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3695     ranlib_default="${cross_prefix}${ranlib_default} -D"
3696 else
3697     ranlib_default="${cross_prefix}${ranlib_default}"
3698 fi
3699 strip_default="${cross_prefix}${strip_default}"
3700 windres_default="${cross_prefix}${windres_default}"
3701
3702 sysinclude_default="${sysroot}/usr/include"
3703
3704 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3705     target_exec target_os yasmexe
3706 enabled cross_compile || host_cc_default=$cc
3707 set_default host_cc
3708
3709 pkg_config_fail_message=""
3710 if ! $pkg_config --version >/dev/null 2>&1; then
3711     warn "$pkg_config not found, library detection may fail."
3712     pkg_config=false
3713 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3714     pkg_config_fail_message="
3715 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3716 fi
3717
3718 if test $doxygen != $doxygen_default && \
3719   ! $doxygen --version >/dev/null 2>&1; then
3720     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3721 fi
3722
3723 exesuf() {
3724     case $1 in
3725         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3726     esac
3727 }
3728
3729 EXESUF=$(exesuf $target_os)
3730 HOSTEXESUF=$(exesuf $host_os)
3731
3732 # set temporary file name
3733 : ${TMPDIR:=$TEMPDIR}
3734 : ${TMPDIR:=$TMP}
3735 : ${TMPDIR:=/tmp}
3736
3737 if [ -n "$tempprefix" ] ; then
3738     mktemp(){
3739         echo $tempprefix.${HOSTNAME}.${UID}
3740     }
3741 elif ! check_cmd mktemp -u XXXXXX; then
3742     # simple replacement for missing mktemp
3743     # NOT SAFE FOR GENERAL USE
3744     mktemp(){
3745         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3746     }
3747 fi
3748
3749 tmpfile(){
3750     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3751         (set -C; exec > $tmp) 2>/dev/null ||
3752         die "Unable to create temporary file in $TMPDIR."
3753     append TMPFILES $tmp
3754     eval $1=$tmp
3755 }
3756
3757 trap 'rm -f -- $TMPFILES' EXIT
3758
3759 tmpfile TMPASM .asm
3760 tmpfile TMPC   .c
3761 tmpfile TMPCPP .cpp
3762 tmpfile TMPE   $EXESUF
3763 tmpfile TMPH   .h
3764 tmpfile TMPM   .m
3765 tmpfile TMPO   .o
3766 tmpfile TMPS   .S
3767 tmpfile TMPSH  .sh
3768 tmpfile TMPV   .ver
3769
3770 unset -f mktemp
3771
3772 chmod +x $TMPE
3773
3774 # make sure we can execute files in $TMPDIR
3775 cat > $TMPSH 2>> $logfile <<EOF
3776 #! /bin/sh
3777 EOF
3778 chmod +x $TMPSH >> $logfile 2>&1
3779 if ! $TMPSH >> $logfile 2>&1; then
3780     cat <<EOF
3781 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3782 variable to another directory and make sure that it is not mounted noexec.
3783 EOF
3784     die "Sanity test failed."
3785 fi
3786
3787 armasm_flags(){
3788     for flag; do
3789         case $flag in
3790             # Filter out MSVC cl.exe options from cflags that shouldn't
3791             # be passed to gas-preprocessor
3792             -M[TD]*)                                            ;;
3793             *)                  echo $flag                      ;;
3794         esac
3795    done
3796 }
3797
3798 ccc_flags(){
3799     for flag; do
3800         case $flag in
3801             -std=c99)           echo -c99                       ;;
3802             -mcpu=*)            echo -arch ${flag#*=}           ;;
3803             -mieee)             echo -ieee                      ;;
3804             -O*|-fast)          echo $flag                      ;;
3805             -fno-math-errno)    echo -assume nomath_errno       ;;
3806             -g)                 echo -g3                        ;;
3807             -Wall)              echo -msg_enable level2         ;;
3808             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3809             -Wl,*)              echo $flag                      ;;
3810             -f*|-W*)                                            ;;
3811             *)                  echo $flag                      ;;
3812         esac
3813    done
3814 }
3815
3816 cparser_flags(){
3817     for flag; do
3818         case $flag in
3819             -Wno-switch)             echo -Wno-switch-enum ;;
3820             -Wno-format-zero-length) ;;
3821             -Wdisabled-optimization) ;;
3822             -Wno-pointer-sign)       echo -Wno-other ;;
3823             *)                       echo $flag ;;
3824         esac
3825     done
3826 }
3827
3828 msvc_common_flags(){
3829     for flag; do
3830         case $flag in
3831             # In addition to specifying certain flags under the compiler
3832             # specific filters, they must be specified here as well or else the
3833             # generic catch all at the bottom will print the original flag.
3834             -Wall)                ;;
3835             -std=c99)             ;;
3836             # Common flags
3837             -fomit-frame-pointer) ;;
3838             -g)                   echo -Z7 ;;
3839             -fno-math-errno)      ;;
3840             -fno-common)          ;;
3841             -fno-signed-zeros)    ;;
3842             -fPIC)                ;;
3843             -mthumb)              ;;
3844             -march=*)             ;;
3845             -lz)                  echo zlib.lib ;;
3846             -lavifil32)           echo vfw32.lib ;;
3847             -lavicap32)           echo vfw32.lib user32.lib ;;
3848             -lx264)               echo libx264.lib ;;
3849             -l*)                  echo ${flag#-l}.lib ;;
3850             -LARGEADDRESSAWARE)   echo $flag ;;
3851             -L*)                  echo -libpath:${flag#-L} ;;
3852             *)                    echo $flag ;;
3853         esac
3854     done
3855 }
3856
3857 msvc_flags(){
3858     msvc_common_flags "$@"
3859     for flag; do
3860         case $flag in
3861             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3862                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3863                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3864                                        -wd4307 \
3865                                        -wd4273 -wd4554 -wd4701 ;;
3866         esac
3867     done
3868 }
3869
3870 icl_flags(){
3871     msvc_common_flags "$@"
3872     for flag; do
3873         case $flag in
3874             # Despite what Intel's documentation says -Wall, which is supported
3875             # on Windows, does enable remarks so disable them here.
3876             -Wall)                echo $flag -Qdiag-disable:remark ;;
3877             -std=c99)             echo -Qstd=c99 ;;
3878             -flto)                echo -ipo ;;
3879         esac
3880     done
3881 }
3882
3883 icc_flags(){
3884     for flag; do
3885         case $flag in
3886             -flto)                echo -ipo ;;
3887             *)                    echo $flag ;;
3888         esac
3889     done
3890 }
3891
3892 pgi_flags(){
3893     for flag; do
3894         case $flag in
3895             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3896             -fomit-frame-pointer) echo -Mnoframe ;;
3897             -g)                   echo -gopt ;;
3898             *)                    echo $flag ;;
3899         esac
3900     done
3901 }
3902
3903 suncc_flags(){
3904     for flag; do
3905         case $flag in
3906             -march=*|-mcpu=*)
3907                 case "${flag#*=}" in
3908                     native)                   echo -xtarget=native       ;;
3909                     v9|niagara)               echo -xarch=sparc          ;;
3910                     ultrasparc)               echo -xarch=sparcvis       ;;
3911                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3912                     i586|pentium)             echo -xchip=pentium        ;;
3913                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3914                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3915                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3916                     pentium4*)          echo -xtarget=pentium4           ;;
3917                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3918                     *-sse3)             echo -xarch=sse3                 ;;
3919                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3920                     bonnell)                   echo -xarch=ssse3         ;;
3921                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3922                     westmere)                  echo -xtarget=westmere    ;;
3923                     silvermont)                echo -xarch=sse4_2        ;;
3924                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3925                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
3926                                                echo -xarch=avx           ;;
3927                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3928                     btver1)                    echo -xarch=amdsse4a      ;;
3929                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
3930                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3931                     k8|opteron|athlon64|athlon-fx)
3932                                                echo -xarch=sse2a         ;;
3933                     athlon*)                   echo -xarch=pentium_proa  ;;
3934                 esac
3935                 ;;
3936             -std=c99)             echo -xc99              ;;
3937             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3938             -fPIC)                echo -KPIC -xcode=pic32 ;;
3939             -W*,*)                echo $flag              ;;
3940             -f*-*|-W*|-mimpure-text)                      ;;
3941             -shared)              echo -G                 ;;
3942             *)                    echo $flag              ;;
3943         esac
3944     done
3945 }
3946
3947 tms470_flags(){
3948     for flag; do
3949         case $flag in
3950             -march=*|-mcpu=*)
3951                 case "${flag#*=}" in
3952                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3953                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3954                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3955                     armv6*|arm11*)          echo -mv=6   ;;
3956                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3957                                             echo -mv=5e  ;;
3958                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3959                 esac
3960                 ;;
3961             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3962             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3963             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3964             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3965             -msoft-float)   echo --float_support=vfplib       ;;
3966             -O[0-3]|-mf=*)  echo $flag                        ;;
3967             -g)             echo -g -mn                       ;;
3968             -pds=*)         echo $flag                        ;;
3969             -D*|-I*)        echo $flag                        ;;
3970             --gcc|--abi=*)  echo $flag                        ;;
3971             -me)            echo $flag                        ;;
3972         esac
3973     done
3974 }
3975
3976 probe_cc(){
3977     pfx=$1
3978     _cc=$2
3979     first=$3
3980
3981     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3982     unset _ld_o _ldflags _ld_lib _ld_path
3983     unset _depflags _DEPCMD _DEPFLAGS
3984     _flags_filter=echo
3985
3986     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3987         true # no-op to avoid reading stdin in following checks
3988     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3989         _type=llvm_gcc
3990         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3991         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3992         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3993         _cflags_speed='-O3'
3994         _cflags_size='-Os'
3995     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3996         _type=gcc
3997         gcc_version=$($_cc --version | head -n1)
3998         gcc_basever=$($_cc -dumpversion)
3999         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4000         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4001         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4002         case $gcc_basever in
4003             2) ;;
4004             2.*) ;;
4005             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4006         esac
4007         if [ "$first" = true ]; then
4008             case $gcc_basever in
4009                 4.2*)
4010                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4011             esac
4012         fi
4013         _cflags_speed='-O3'
4014         _cflags_size='-Os'
4015     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4016         _type=icc
4017         _ident=$($_cc --version | head -n1)
4018         _depflags='-MMD'
4019         _cflags_speed='-O3'
4020         _cflags_size='-Os'
4021         _cflags_noopt='-O1'
4022         _flags_filter=icc_flags
4023     elif $_cc -v 2>&1 | grep -q xlc; then
4024         _type=xlc
4025         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4026         _cflags_speed='-O5'
4027         _cflags_size='-O5 -qcompact'
4028     elif $_cc -V 2>/dev/null | grep -q Compaq; then
4029         _type=ccc
4030         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
4031         _DEPFLAGS='-M'
4032         _cflags_speed='-fast'
4033         _cflags_size='-O1'
4034         _flags_filter=ccc_flags
4035     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4036         test -d "$sysroot" || die "No valid sysroot specified."
4037         _type=armcc
4038         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4039         armcc_conf="$PWD/armcc.conf"
4040         $_cc --arm_linux_configure                 \
4041              --arm_linux_config_file="$armcc_conf" \
4042              --configure_sysroot="$sysroot"        \
4043              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4044              die "Error creating armcc configuration file."
4045         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4046         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4047         as_default="${cross_prefix}gcc"
4048         _depflags='-MMD'
4049         _cflags_speed='-O3'
4050         _cflags_size='-Os'
4051     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
4052         _type=tms470
4053         _ident=$($_cc -version | head -n1 | tr -s ' ')
4054         _flags='--gcc --abi=eabi -me'
4055         _cc_e='-ppl -fe=$@'
4056         _cc_o='-fe=$@'
4057         _depflags='-ppa -ppd=$(@:.o=.d)'
4058         _cflags_speed='-O3 -mf=5'
4059         _cflags_size='-O3 -mf=2'
4060         _flags_filter=tms470_flags
4061     elif $_cc -v 2>&1 | grep -q clang; then
4062         _type=clang
4063         _ident=$($_cc --version 2>/dev/null | head -n1)
4064         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4065         _cflags_speed='-O3'
4066         _cflags_size='-Oz'
4067     elif $_cc -V 2>&1 | grep -q Sun; then
4068         _type=suncc
4069         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4070         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4071         _DEPFLAGS='-xM1 -xc99'
4072         _ldflags='-std=c99'
4073         _cflags_speed='-O5'
4074         _cflags_size='-O5 -xspace'
4075         _flags_filter=suncc_flags
4076     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4077         _type=pathscale
4078         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4079         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4080         _cflags_speed='-O2'
4081         _cflags_size='-Os'
4082         _flags_filter='filter_out -Wdisabled-optimization'
4083     elif $_cc -v 2>&1 | grep -q Open64; then
4084         _type=open64
4085         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4086         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4087         _cflags_speed='-O2'
4088         _cflags_size='-Os'
4089         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4090     elif $_cc -V 2>&1 | grep -q Portland; then
4091         _type=pgi
4092         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
4093         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
4094         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
4095         _cflags_size="-O2 -Munroll=c:1 $opt_common"
4096         _cflags_noopt="-O"
4097         _flags_filter=pgi_flags
4098     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4099         _type=armasm
4100         _ident=$($_cc | head -n1)
4101         # 4509: "This form of conditional instruction is deprecated"
4102         _flags="-nologo -ignore 4509"
4103         _flags_filter=armasm_flags
4104     elif $_cc 2>&1 | grep -q Intel; then
4105         _type=icl
4106         _ident=$($_cc 2>&1 | head -n1)
4107         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4108         # Not only is O3 broken on 13.x+ but it is slower on all previous
4109         # versions (tested) as well.
4110         _cflags_speed="-O2"
4111         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4112         if $_cc 2>&1 | grep -q Linker; then
4113             _ld_o='-out:$@'
4114         else
4115             _ld_o='-Fe$@'
4116         fi
4117         _cc_o='-Fo$@'
4118         _cc_e='-P'
4119         _flags_filter=icl_flags
4120         _ld_lib='lib%.a'
4121         _ld_path='-libpath:'
4122         # -Qdiag-error to make icl error when seeing certain unknown arguments
4123         _flags='-nologo -Qdiag-error:4044,10157'
4124         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4125         # with MSVC which enables it by default.
4126         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4127         disable stripping
4128     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4129         # lld can emulate multiple different linkers; in ms link.exe mode,
4130         # the -? parameter gives the help output which contains an identifyable
4131         # string, while it gives an error in other modes.
4132         _type=lld-link
4133         # The link.exe mode doesn't have a switch for getting the version,
4134         # but we can force it back to gnu mode and get the version from there.
4135         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4136         _ld_o='-out:$@'
4137         _flags_filter=msvc_flags
4138         _ld_lib='lib%.a'
4139         _ld_path='-libpath:'
4140     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4141         _type=msvc
4142         _ident=$($_cc 2>&1 | head -n1)
4143         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4144         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4145         _cflags_speed="-O2"
4146         _cflags_size="-O1"
4147         if $_cc -nologo- 2>&1 | grep -q Linker; then
4148             _ld_o='-out:$@'
4149         else
4150             _ld_o='-Fe$@'
4151         fi
4152         _cc_o='-Fo$@'
4153         _cc_e='-P -Fi$@'
4154         _flags_filter=msvc_flags
4155         _ld_lib='lib%.a'
4156         _ld_path='-libpath:'
4157         _flags='-nologo'
4158         disable stripping
4159     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4160         _type=cparser
4161         _ident=$($_cc --version | head -n1)
4162         _depflags='-MMD'
4163         _cflags_speed='-O4'
4164         _cflags_size='-O2'
4165         _flags_filter=cparser_flags
4166     fi
4167
4168     eval ${pfx}_type=\$_type
4169     eval ${pfx}_ident=\$_ident
4170 }
4171
4172 set_ccvars(){
4173     eval ${1}_C=\${_cc_c-\${${1}_C}}
4174     eval ${1}_E=\${_cc_e-\${${1}_E}}
4175     eval ${1}_O=\${_cc_o-\${${1}_O}}
4176
4177     if [ -n "$_depflags" ]; then
4178         eval ${1}_DEPFLAGS=\$_depflags
4179     else
4180         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4181         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4182         eval DEP${1}FLAGS=\$_flags
4183     fi
4184 }
4185
4186 probe_cc cc "$cc" "true"
4187 cflags_filter=$_flags_filter
4188 cflags_speed=$_cflags_speed
4189 cflags_size=$_cflags_size
4190 cflags_noopt=$_cflags_noopt
4191 add_cflags $_flags $_cflags
4192 cc_ldflags=$_ldflags
4193 set_ccvars CC
4194
4195 probe_cc hostcc "$host_cc"
4196 host_cflags_filter=$_flags_filter
4197 add_host_cflags  $_flags $_cflags
4198 set_ccvars HOSTCC
4199
4200 test -n "$cc_type" && enable $cc_type ||
4201     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4202
4203 : ${as_default:=$cc}
4204 : ${objcc_default:=$cc}
4205 : ${dep_cc_default:=$cc}
4206 : ${ld_default:=$cc}
4207 : ${host_ld_default:=$host_cc}
4208 set_default ar as objcc dep_cc ld ln_s host_ld windres
4209
4210 probe_cc as "$as"
4211 asflags_filter=$_flags_filter
4212 add_asflags $_flags $_cflags
4213 set_ccvars AS
4214
4215 probe_cc objcc "$objcc"
4216 objcflags_filter=$_flags_filter
4217 add_objcflags $_flags $_cflags
4218 set_ccvars OBJC
4219
4220 probe_cc ld "$ld"
4221 ldflags_filter=$_flags_filter
4222 add_ldflags $_flags $_ldflags
4223 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4224 LD_O=${_ld_o-$LD_O}
4225 LD_LIB=${_ld_lib-$LD_LIB}
4226 LD_PATH=${_ld_path-$LD_PATH}
4227
4228 probe_cc hostld "$host_ld"
4229 host_ldflags_filter=$_flags_filter
4230 add_host_ldflags $_flags $_ldflags
4231 HOSTLD_O=${_ld_o-$HOSTLD_O}
4232
4233 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4234     probe_cc depcc "$dep_cc"
4235     CCDEP=${_DEPCMD:-$DEPCMD}
4236     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4237     DEPCCFLAGS=$_flags
4238 fi
4239
4240 if $ar 2>&1 | grep -q Microsoft; then
4241     arflags="-nologo"
4242     ar_o='-out:$@'
4243 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
4244     arflags="rq"
4245     ar_o='$@'
4246 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
4247     arflags='-Xany -r -c'
4248     ar_o='$@'
4249 elif $ar 2>&1 | grep -q "\[D\] "; then
4250     arflags="rcD"
4251     ar_o='$@'
4252 else
4253     arflags="rc"
4254     ar_o='$@'
4255 fi
4256
4257 add_cflags $extra_cflags
4258 add_cxxflags $extra_cxxflags
4259 add_objcflags $extra_objcflags
4260 add_asflags $extra_cflags
4261
4262 if test -n "$sysroot"; then
4263     case "$cc_type" in
4264         gcc|llvm_gcc|clang)
4265             add_cppflags --sysroot="$sysroot"
4266             add_ldflags --sysroot="$sysroot"
4267 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
4268             add_cppflags -isysroot "$sysroot"
4269             add_ldflags -isysroot "$sysroot"
4270         ;;
4271         tms470)
4272             add_cppflags -I"$sysinclude"
4273             add_ldflags  --sysroot="$sysroot"
4274         ;;
4275     esac
4276 fi
4277
4278 if test "$cpu" = host; then
4279     enabled cross_compile &&
4280         die "--cpu=host makes no sense when cross-compiling."
4281
4282     case "$cc_type" in
4283         gcc|llvm_gcc)
4284             check_native(){
4285                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4286                 sed -n "/cc1.*$1=/{
4287                             s/.*$1=\\([^ ]*\\).*/\\1/
4288                             p
4289                             q
4290                         }" $TMPE
4291             }
4292             cpu=$(check_native -march || check_native -mcpu)
4293         ;;
4294         clang)
4295             check_native(){
4296                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4297                 sed -n "/cc1.*-target-cpu /{
4298                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4299                             p
4300                             q
4301                         }" $TMPE
4302             }
4303             cpu=$(check_native -march)
4304         ;;
4305     esac
4306
4307     test "${cpu:-host}" = host &&
4308         die "--cpu=host not supported with compiler $cc"
4309 fi
4310
4311 # Deal with common $arch aliases
4312 case "$arch" in
4313     aarch64|arm64)
4314         arch="aarch64"
4315     ;;
4316     arm*|iPad*|iPhone*)
4317         arch="arm"
4318     ;;
4319     mips*|IP*)
4320         case "$arch" in
4321         *el)
4322             add_cppflags -EL
4323             add_ldflags -EL
4324         ;;
4325         *eb)
4326             add_cppflags -EB
4327             add_ldflags -EB
4328         ;;
4329         esac
4330         arch="mips"
4331     ;;
4332     parisc*|hppa*)
4333         arch="parisc"
4334     ;;
4335     "Power Macintosh"|ppc*|powerpc*)
4336         arch="ppc"
4337     ;;
4338     s390|s390x)
4339         arch="s390"
4340     ;;
4341     sh4|sh)
4342         arch="sh4"
4343     ;;
4344     sun4*|sparc*)
4345         arch="sparc"
4346     ;;
4347     tilegx|tile-gx)
4348         arch="tilegx"
4349     ;;
4350     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4351         arch="x86"
4352     ;;
4353 esac
4354
4355 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4356 enable $arch
4357
4358 # Add processor-specific flags
4359 if enabled aarch64; then
4360
4361     case $cpu in
4362         armv*)
4363             cpuflags="-march=$cpu"
4364         ;;
4365         *)
4366             cpuflags="-mcpu=$cpu"
4367         ;;
4368     esac
4369
4370 elif enabled alpha; then
4371
4372     cpuflags="-mcpu=$cpu"
4373
4374 elif enabled arm; then
4375
4376     check_arm_arch() {
4377         check_cpp_condition stddef.h \
4378             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4379             $cpuflags
4380     }
4381
4382     probe_arm_arch() {
4383         if   check_arm_arch 4;        then echo armv4
4384         elif check_arm_arch 4T;       then echo armv4t
4385         elif check_arm_arch 5;        then echo armv5
4386         elif check_arm_arch 5E;       then echo armv5e
4387         elif check_arm_arch 5T;       then echo armv5t
4388         elif check_arm_arch 5TE;      then echo armv5te
4389         elif check_arm_arch 5TEJ;     then echo armv5te
4390         elif check_arm_arch 6;        then echo armv6
4391         elif check_arm_arch 6J;       then echo armv6j
4392         elif check_arm_arch 6K;       then echo armv6k
4393         elif check_arm_arch 6Z;       then echo armv6z
4394         elif check_arm_arch 6ZK;      then echo armv6zk
4395         elif check_arm_arch 6T2;      then echo armv6t2
4396         elif check_arm_arch 7;        then echo armv7
4397         elif check_arm_arch 7A  7_A;  then echo armv7-a
4398         elif check_arm_arch 7S;       then echo armv7-a
4399         elif check_arm_arch 7R  7_R;  then echo armv7-r
4400         elif check_arm_arch 7M  7_M;  then echo armv7-m
4401         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4402         elif check_arm_arch 8A  8_A;  then echo armv8-a
4403         fi
4404     }
4405
4406     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4407
4408     case $cpu in
4409         armv*)
4410             cpuflags="-march=$cpu"
4411             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4412         ;;
4413         *)
4414             cpuflags="-mcpu=$cpu"
4415             case $cpu in
4416                 cortex-a*)                               subarch=armv7a  ;;
4417                 cortex-r*)                               subarch=armv7r  ;;
4418                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4419                 arm11*)                                  subarch=armv6   ;;
4420                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4421                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4422                 *)                             subarch=$(probe_arm_arch) ;;
4423             esac
4424         ;;
4425     esac
4426
4427     case "$subarch" in
4428         armv5t*)    enable fast_clz                ;;
4429         armv[6-8]*)
4430             enable fast_clz
4431             disabled fast_unaligned || enable fast_unaligned
4432             ;;
4433     esac
4434
4435 elif enabled avr32; then
4436
4437     case $cpu in
4438         ap7[02]0[0-2])
4439             subarch="avr32_ap"
4440             cpuflags="-mpart=$cpu"
4441         ;;
4442         ap)
4443             subarch="avr32_ap"
4444             cpuflags="-march=$cpu"
4445         ;;
4446         uc3[ab]*)
4447             subarch="avr32_uc"
4448             cpuflags="-mcpu=$cpu"
4449         ;;
4450         uc)
4451             subarch="avr32_uc"
4452             cpuflags="-march=$cpu"
4453         ;;
4454     esac
4455
4456 elif enabled bfin; then
4457
4458     cpuflags="-mcpu=$cpu"
4459
4460 elif enabled mips; then
4461
4462     cpuflags="-march=$cpu"
4463
4464     if [ "$cpu" != "generic" ]; then
4465         disable mips32r2
4466         disable mips32r5
4467         disable mips64r2
4468         disable mips32r6
4469         disable mips64r6
4470         disable loongson2
4471         disable loongson3
4472
4473         case $cpu in
4474             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4475                 enable mips32r2
4476                 disable msa
4477             ;;
4478             p5600|i6400|p6600)
4479                 disable mipsdsp
4480                 disable mipsdspr2
4481             ;;
4482             loongson*)
4483                 enable loongson2
4484                 enable loongson3
4485                 enable local_aligned_8 local_aligned_16 local_aligned_32
4486                 enable simd_align_16
4487                 enable fast_64bit
4488                 enable fast_clz
4489                 enable fast_cmov
4490                 enable fast_unaligned
4491                 disable aligned_stack
4492                 disable mipsfpu
4493                 disable mipsdsp
4494                 disable mipsdspr2
4495                 case $cpu in
4496                     loongson3*)
4497                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4498                     ;;
4499                     loongson2e)
4500                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4501                     ;;
4502                     loongson2f)
4503                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4504                     ;;
4505                 esac
4506             ;;
4507             *)
4508                 # Unknown CPU. Disable everything.
4509                 warn "unknown CPU. Disabling all MIPS optimizations."
4510                 disable mipsfpu
4511                 disable mipsdsp
4512                 disable mipsdspr2
4513                 disable msa
4514                 disable mmi
4515             ;;
4516         esac
4517
4518         case $cpu in
4519             24kc)
4520                 disable mipsfpu
4521                 disable mipsdsp
4522                 disable mipsdspr2
4523             ;;
4524             24kf*)
4525                 disable mipsdsp
4526                 disable mipsdspr2
4527             ;;
4528             24kec|34kc|1004kc)
4529                 disable mipsfpu
4530                 disable mipsdspr2
4531             ;;
4532             24kef*|34kf*|1004kf*)
4533                 disable mipsdspr2
4534             ;;
4535             74kc)
4536                 disable mipsfpu
4537             ;;
4538             p5600)
4539                 enable mips32r5
4540                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4541             ;;
4542             i6400)
4543                 enable mips64r6
4544                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4545             ;;
4546             p6600)
4547                 enable mips64r6
4548                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4549             ;;
4550         esac
4551     else
4552         # We do not disable anything. Is up to the user to disable the unwanted features.
4553         warn 'generic cpu selected'
4554     fi
4555
4556 elif enabled ppc; then
4557
4558     disable ldbrx
4559
4560     case $(tolower $cpu) in
4561         601|ppc601|powerpc601)
4562             cpuflags="-mcpu=601"
4563             disable altivec
4564         ;;
4565         603*|ppc603*|powerpc603*)
4566             cpuflags="-mcpu=603"
4567             disable altivec
4568         ;;
4569         604*|ppc604*|powerpc604*)
4570             cpuflags="-mcpu=604"
4571             disable altivec
4572         ;;
4573         g3|75*|ppc75*|powerpc75*)
4574             cpuflags="-mcpu=750"
4575             disable altivec
4576         ;;
4577         g4|745*|ppc745*|powerpc745*)
4578             cpuflags="-mcpu=7450"
4579             disable vsx
4580         ;;
4581         74*|ppc74*|powerpc74*)
4582             cpuflags="-mcpu=7400"
4583             disable vsx
4584         ;;
4585         g5|970|ppc970|powerpc970)
4586             cpuflags="-mcpu=970"
4587             disable vsx
4588         ;;
4589         power[3-6]*)
4590             cpuflags="-mcpu=$cpu"
4591             disable vsx
4592         ;;
4593         power[7-8]*)
4594             cpuflags="-mcpu=$cpu"
4595         ;;
4596         cell)
4597             cpuflags="-mcpu=cell"
4598             enable ldbrx
4599             disable vsx
4600         ;;
4601         e500mc)
4602             cpuflags="-mcpu=e500mc"
4603             disable altivec
4604         ;;
4605         e500v2)
4606             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4607             disable altivec
4608             disable dcbzl
4609         ;;
4610         e500)
4611             cpuflags="-mcpu=8540 -mhard-float"
4612             disable altivec
4613             disable dcbzl
4614         ;;
4615     esac
4616
4617 elif enabled sparc; then
4618
4619     case $cpu in
4620         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4621             cpuflags="-mcpu=$cpu"
4622         ;;
4623         ultrasparc*|niagara[234])
4624             cpuflags="-mcpu=$cpu"
4625         ;;
4626     esac
4627
4628 elif enabled x86; then
4629
4630     case $cpu in
4631         i[345]86|pentium)
4632             cpuflags="-march=$cpu"
4633             disable i686
4634             disable mmx
4635         ;;
4636         # targets that do NOT support nopl and conditional mov (cmov)
4637         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4638             cpuflags="-march=$cpu"
4639             disable i686
4640         ;;
4641         # targets that do support nopl and conditional mov (cmov)
4642         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4643         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4644         |amdfam10|barcelona|b[dt]ver*|znver*)
4645             cpuflags="-march=$cpu"
4646             enable i686
4647             enable fast_cmov
4648         ;;
4649         # targets that do support conditional mov but on which it's slow
4650         pentium4|pentium4m|prescott|nocona)
4651             cpuflags="-march=$cpu"
4652             enable i686
4653             disable fast_cmov
4654         ;;
4655     esac
4656
4657 fi
4658
4659 if [ "$cpu" != generic ]; then
4660     add_cflags  $cpuflags
4661     add_asflags $cpuflags
4662     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4663 fi
4664
4665 # compiler sanity check
4666 check_exec <<EOF
4667 int main(void){ return 0; }
4668 EOF
4669 if test "$?" != 0; then
4670     echo "$cc is unable to create an executable file."
4671     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4672         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4673         echo "Only do this if you know what cross compiling means."
4674     fi
4675     die "C compiler test failed."
4676 fi
4677
4678 add_cppflags -D_ISOC99_SOURCE
4679 add_cxxflags -D__STDC_CONSTANT_MACROS
4680 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4681
4682 # some compilers silently accept -std=c11, so we also need to check that the
4683 # version macro is defined properly
4684 if test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L"; then
4685     add_cflags -std=c11
4686 else
4687     check_cflags -std=c99
4688 fi
4689
4690 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4691 #include <stdlib.h>
4692 EOF
4693 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4694 #include <stdlib.h>
4695 EOF
4696
4697 add_host_cppflags -D_ISOC99_SOURCE
4698 check_host_cflags -std=c99
4699 check_host_cflags -Wall
4700 check_host_cflags -O3
4701
4702 check_64bit(){
4703     arch32=$1
4704     arch64=$2
4705     expr=$3
4706     check_code cc "" "int test[2*($expr) - 1]" &&
4707         subarch=$arch64 || subarch=$arch32
4708 }
4709
4710 case "$arch" in
4711     aarch64|alpha|ia64)
4712         spic=$shared
4713     ;;
4714     mips)
4715         check_64bit mips mips64 '_MIPS_SIM > 1'
4716         spic=$shared
4717     ;;
4718     parisc)
4719         check_64bit parisc parisc64 'sizeof(void *) > 4'
4720         spic=$shared
4721     ;;
4722     ppc)
4723         check_64bit ppc ppc64 'sizeof(void *) > 4'
4724         spic=$shared
4725     ;;
4726     s390)
4727         check_64bit s390 s390x 'sizeof(void *) > 4'
4728         spic=$shared
4729     ;;
4730     sparc)
4731         check_64bit sparc sparc64 'sizeof(void *) > 4'
4732         spic=$shared
4733     ;;
4734     x86)
4735         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4736         # Treat x32 as x64 for now. Note it also needs spic=$shared
4737         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4738             subarch=x86_64
4739         if test "$subarch" = "x86_64"; then
4740             spic=$shared
4741         fi
4742     ;;
4743     ppc)
4744         check_cc <<EOF && subarch="ppc64"
4745         int test[(int)sizeof(char*) - 7];
4746 EOF
4747     ;;
4748 esac
4749
4750 enable $subarch
4751 enabled spic && enable_weak pic
4752
4753 # OS specific
4754 case $target_os in
4755     aix)
4756         SHFLAGS=-shared
4757         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4758         enabled shared && add_ldflags -Wl,-brtl
4759         ;;
4760     android)
4761         disable symver
4762         enable section_data_rel_ro
4763         SLIB_INSTALL_NAME='$(SLIBNAME)'
4764         SLIB_INSTALL_LINKS=
4765         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4766         ;;
4767     haiku)
4768         prefix_default="/boot/common"
4769         network_extralibs="-lnetwork"
4770         host_libs=
4771         ;;
4772     sunos)
4773         SHFLAGS='-shared -Wl,-h,$$(@F)'
4774         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4775         network_extralibs="-lsocket -lnsl"
4776         add_cppflags -D__EXTENSIONS__
4777         # When using suncc to build, the Solaris linker will mark
4778         # an executable with each instruction set encountered by
4779         # the Solaris assembler.  As our libraries contain their own
4780         # guards for processor-specific code, instead suppress
4781         # generation of the HWCAPS ELF section on Solaris x86 only.
4782         enabled_all suncc x86 &&
4783             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4784             add_ldflags -Wl,-M,mapfile
4785         nm_default='nm -P -g'
4786         version_script='-M'
4787         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
4788         ;;
4789     netbsd)
4790         disable symver
4791         oss_indev_extralibs="-lossaudio"
4792         oss_outdev_extralibs="-lossaudio"
4793         enabled gcc || check_ldflags -Wl,-zmuldefs
4794         ;;
4795     openbsd|bitrig)
4796         disable symver
4797         SHFLAGS='-shared'
4798         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4799         SLIB_INSTALL_LINKS=
4800         oss_indev_extralibs="-lossaudio"
4801         oss_outdev_extralibs="-lossaudio"
4802         ;;
4803     dragonfly)
4804         disable symver
4805         ;;
4806     freebsd)
4807         ;;
4808     bsd/os)
4809         add_extralibs -lpoll -lgnugetopt
4810         strip="strip -d"
4811         ;;
4812     darwin)
4813         enabled ppc && add_asflags -force_cpusubtype_ALL
4814         install_name_dir_default='$(SHLIBDIR)'
4815         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4816         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4817         strip="${strip} -x"
4818         add_ldflags -Wl,-dynamic,-search_paths_first
4819         SLIBSUF=".dylib"
4820         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4821         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4822         objformat="macho"
4823         enabled x86_64 && objformat="macho64"
4824         enabled_any pic shared x86_64 ||
4825             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4826         check_header dispatch/dispatch.h &&
4827             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
4828         version_script='-exported_symbols_list'
4829         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
4830         ;;
4831     msys*)
4832         die "Native MSYS builds are discouraged, please use the MINGW environment."
4833         ;;
4834     mingw32*|mingw64*)
4835         if test $target_os = "mingw32ce"; then
4836             disable network
4837         else
4838             target_os=mingw32
4839         fi
4840         decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
4841         decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
4842         LIBTARGET=i386
4843         if enabled x86_64; then
4844             LIBTARGET="i386:x86-64"
4845         elif enabled arm; then
4846             LIBTARGET=arm-wince
4847         fi
4848         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4849         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4850         shlibdir_default="$bindir_default"
4851         SLIBPREF=""
4852         SLIBSUF=".dll"
4853         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4854         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4855         dlltool="${cross_prefix}dlltool"
4856         if check_cmd lib.exe -list; then
4857             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4858             if enabled x86_64; then
4859                 LIBTARGET=x64
4860             fi
4861         elif check_cmd $dlltool --version; then
4862             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4863         fi
4864         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4865         SLIB_INSTALL_LINKS=
4866         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4867         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4868         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--disable-auto-image-base'
4869         objformat="win32"
4870         ranlib=:
4871         enable dos_paths
4872         check_ldflags -Wl,--nxcompat,--dynamicbase
4873         # Lets work around some stupidity in binutils.
4874         # ld will strip relocations from executables even though we need them
4875         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4876         # however ld then forgets what the entry point should be (oops) so we
4877         # have to manually (re)set it.
4878         if enabled x86_32; then
4879             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
4880         elif enabled x86_64; then
4881             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
4882             check_ldflags -Wl,--high-entropy-va # binutils 2.25
4883             # Set image base >4GB for extra entropy with HEASLR
4884             add_ldexeflags -Wl,--image-base,0x140000000
4885             append SHFLAGS -Wl,--image-base,0x180000000
4886         fi
4887         ;;
4888     win32|win64)
4889         disable symver
4890         if enabled shared; then
4891             # Link to the import library instead of the normal static library
4892             # for shared libs.
4893             LD_LIB='%.lib'
4894             # Cannot build both shared and static libs with MSVC or icl.
4895             disable static
4896         fi
4897         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4898         shlibdir_default="$bindir_default"
4899         SLIBPREF=""
4900         SLIBSUF=".dll"
4901         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4902         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4903         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4904         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4905         SLIB_INSTALL_LINKS=
4906         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4907         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4908         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4909         objformat="win32"
4910         ranlib=:
4911         enable dos_paths
4912         ;;
4913     cygwin*)
4914         target_os=cygwin
4915         shlibdir_default="$bindir_default"
4916         SLIBPREF="cyg"
4917         SLIBSUF=".dll"
4918         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4919         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4920         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4921         SLIB_INSTALL_LINKS=
4922         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4923         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4924         objformat="win32"
4925         enable dos_paths
4926         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4927         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4928         ;;
4929     *-dos|freedos|opendos)
4930         network_extralibs="-lsocket"
4931         objformat="coff"
4932         enable dos_paths
4933         add_cppflags -U__STRICT_ANSI__
4934         ;;
4935     linux)
4936         enable dv1394
4937         enable section_data_rel_ro
4938         ;;
4939     irix*)
4940         target_os=irix
4941         ranlib="echo ignoring ranlib"
4942         ;;
4943     os/2*)
4944         strip="lxlite -CS"
4945         objformat="aout"
4946         add_cppflags -D_GNU_SOURCE
4947         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4948         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4949         LIBSUF="_s.a"
4950         SLIBPREF=""
4951         SLIBSUF=".dll"
4952         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4953         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4954         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
4955             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
4956             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
4957             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
4958             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
4959         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
4960             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
4961         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4962         SLIB_INSTALL_LINKS=
4963         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
4964         enable dos_paths
4965         enable_weak os2threads
4966         ;;
4967     gnu/kfreebsd)
4968         add_cppflags -D_BSD_SOURCE
4969         ;;
4970     gnu)
4971         ;;
4972     qnx)
4973         add_cppflags -D_QNX_SOURCE
4974         network_extralibs="-lsocket"
4975         ;;
4976     symbian)
4977         SLIBSUF=".dll"
4978         enable dos_paths
4979         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4980         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4981         add_ldflags -Wl,--target1-abs,--no-undefined \
4982                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4983                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4984         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4985                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4986                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4987         ;;
4988     osf1)
4989         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4990         ;;
4991     minix)
4992         ;;
4993     plan9)
4994         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4995                      -D_REENTRANT_SOURCE        \
4996                      -D_RESEARCH_SOURCE         \
4997                      -DFD_SETSIZE=96            \
4998                      -DHAVE_SOCK_OPTS
4999         add_compat strtod.o strtod=avpriv_strtod
5000         network_extralibs='-lbsd'
5001         exeobjs=compat/plan9/main.o
5002         disable ffserver
5003         cp_f='cp'
5004         ;;
5005     none)
5006         ;;
5007     *)
5008         die "Unknown OS '$target_os'."
5009         ;;
5010 esac
5011
5012 # test if creating links works
5013 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5014 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5015 mkdir "$link_dest"
5016 $ln_s "$link_dest" "$link_name"
5017 touch "$link_dest/test_file"
5018 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5019     # create link to source path
5020     [ -e src ] && rm src
5021     $ln_s "$source_path" src
5022     source_link=src
5023 else
5024     # creating directory links doesn't work
5025     # fall back to using the full source path
5026     source_link="$source_path"
5027 fi
5028 # cleanup
5029 rm -r "$link_dest"
5030 rm -r "$link_name"
5031
5032 # determine libc flavour
5033
5034 probe_libc(){
5035     pfx=$1
5036     pfx_no_=${pfx%_}
5037     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5038     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5039         eval ${pfx}libc_type=uclibc
5040         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5041     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5042         eval ${pfx}libc_type=glibc
5043         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5044     # MinGW headers can be installed on Cygwin, so check for newlib first.
5045     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5046         eval ${pfx}libc_type=newlib
5047         add_${pfx}cppflags -U__STRICT_ANSI__
5048     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5049     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5050         eval ${pfx}libc_type=mingw64
5051         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5052             add_compat msvcrt/snprintf.o
5053             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5054         fi
5055         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5056         eval test \$${pfx_no_}cc_type = "gcc" &&
5057             add_${pfx}cppflags -D__printf__=__gnu_printf__
5058     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5059          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5060         eval ${pfx}libc_type=mingw32
5061         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5062             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5063             die "ERROR: MinGW32 runtime version must be >= 3.15."
5064         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5065         check_${pfx}cpp_condition _mingw.h "defined(_WIN32_WINNT) && _WIN32_WINNT >= 0x0502" ||
5066             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
5067         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700__" &&
5068             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5069         eval test \$${pfx_no_}cc_type = "gcc" &&
5070             add_${pfx}cppflags -D__printf__=__gnu_printf__
5071     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5072         eval ${pfx}libc_type=msvcrt
5073         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5074             if [ "$pfx" = host_ ]; then
5075                 add_host_cppflags -Dsnprintf=_snprintf
5076             else
5077                 add_compat strtod.o strtod=avpriv_strtod
5078                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5079                                              _snprintf=avpriv_snprintf  \
5080                                              vsnprintf=avpriv_vsnprintf
5081             fi
5082         fi
5083         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5084         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5085         # 0x601 by default unless something else is set by the user.
5086         # This can easily lead to us detecting functions only present
5087         # in such new versions and producing binaries requiring windows 7.0.
5088         # Therefore explicitly set the default to XP unless the user has
5089         # set something else on the command line.
5090         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5091         # family. For these cases, configure is free to use any functions
5092         # found in the SDK headers by default. (Alternatively, we could force
5093         # _WIN32_WINNT to 0x0602 in that case.)
5094         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5095             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
5096 #ifdef WINAPI_FAMILY
5097 #include <winapifamily.h>
5098 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5099 #error not desktop
5100 #endif
5101 #endif
5102 EOF
5103         if [ "$pfx" = "" ]; then
5104             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5105             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5106         fi
5107     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5108         eval ${pfx}libc_type=klibc
5109     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5110         eval ${pfx}libc_type=bionic
5111     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5112         eval ${pfx}libc_type=solaris
5113         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5114     fi
5115     check_${pfx}cc <<EOF
5116 #include <time.h>
5117 void *v = localtime_r;
5118 EOF
5119 test "$?" != 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
5120 #include <time.h>
5121 void *v = localtime_r;
5122 EOF
5123
5124 }
5125
5126 probe_libc
5127 test -n "$libc_type" && enable libc_$libc_type
5128 probe_libc host_
5129 test -n "$host_libc_type" && enable host_libc_$host_libc_type
5130
5131 case $libc_type in
5132     bionic)
5133         add_compat strtod.o strtod=avpriv_strtod
5134         ;;
5135 esac
5136
5137 # hacks for compiler/libc/os combinations
5138
5139 if enabled_all tms470 libc_glibc; then
5140     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
5141     add_cppflags -D__USER_LABEL_PREFIX__=
5142     add_cppflags -D__builtin_memset=memset
5143     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
5144     add_cflags   -pds=48    # incompatible redefinition of macro
5145 fi
5146
5147 if enabled_all ccc libc_glibc; then
5148     add_ldflags -Wl,-z,now  # calls to libots crash without this
5149 fi
5150
5151 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5152     add_cppflags '-I\$(SRC_PATH)/compat/float'
5153
5154 esc(){
5155     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
5156 }
5157
5158 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
5159
5160 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5161
5162 set_default libdir
5163 : ${shlibdir_default:="$libdir"}
5164 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5165
5166 set_default $PATHS_LIST
5167 set_default nm
5168
5169 # we need to build at least one lib type
5170 if ! enabled_any static shared; then
5171     cat <<EOF
5172 At least one library type must be built.
5173 Specify --enable-static to build the static libraries or --enable-shared to
5174 build the shared libraries as well. To only build the shared libraries specify
5175 --disable-static in addition to --enable-shared.
5176 EOF
5177     exit 1
5178 fi
5179
5180 disabled optimizations || check_cflags -fomit-frame-pointer
5181
5182 enable_weak_pic() {
5183     disabled pic && return
5184     enable pic
5185     add_cppflags -DPIC
5186     case "$target_os" in
5187     mingw*|cygwin*)
5188         ;;
5189     *)
5190         add_cflags -fPIC
5191         ;;
5192     esac
5193     add_asflags  -fPIC
5194 }
5195
5196 enabled pic && enable_weak_pic
5197
5198 check_cc <<EOF || die "Symbol mangling check failed."
5199 int ff_extern;
5200 EOF
5201 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5202 extern_prefix=${sym%%ff_extern*}
5203
5204 check_cc <<EOF && enable_weak inline_asm
5205 void foo(void) { __asm__ volatile ("" ::); }
5206 EOF
5207
5208 _restrict=
5209 for restrict_keyword in restrict __restrict__ __restrict; do
5210     check_cc <<EOF && _restrict=$restrict_keyword && break
5211 void foo(char * $restrict_keyword p);
5212 EOF
5213 done
5214
5215 check_cc <<EOF && enable pragma_deprecated
5216 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
5217 EOF
5218
5219 check_cc <<EOF && enable attribute_packed
5220 struct { int x; } __attribute__((packed)) x;
5221 EOF
5222
5223 check_cc <<EOF && enable attribute_may_alias
5224 union { int x; } __attribute__((may_alias)) x;
5225 EOF
5226
5227 check_cc <<EOF || die "endian test failed"
5228 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5229 EOF
5230 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5231
5232 if ! enabled ppc64 || enabled bigendian; then
5233     disable vsx
5234 fi
5235
5236 check_gas() {
5237     log "check_gas using '$as' as AS"
5238     # :vararg is used on aarch64, arm and ppc altivec
5239     check_as <<EOF || return 1
5240 .macro m n, y:vararg=0
5241 \n: .int \y
5242 .endm
5243 m x
5244 EOF
5245     # .altmacro is only used in arm asm
5246     ! enabled arm || check_as <<EOF || return 1
5247 .altmacro
5248 EOF
5249     enable gnu_as
5250     return 0
5251 }
5252
5253 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5254     nogas=:
5255     enabled_any arm aarch64 && nogas=die
5256     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5257     as_noop=-v
5258
5259     case $as_type in
5260         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5261         gcc)  gaspp_as_type=gas ;;
5262         *)    gaspp_as_type=$as_type ;;
5263     esac
5264
5265     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5266
5267     test "${as#*gas-preprocessor.pl}" != "$as" ||
5268     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5269         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5270
5271     if ! check_gas ; then
5272         as=${gas:=$as}
5273         check_gas || \
5274             $nogas "GNU assembler not found, install/update gas-preprocessor"
5275     fi
5276
5277     check_as <<EOF && enable as_func
5278 .func test
5279 .endfunc
5280 EOF
5281 fi
5282
5283 check_inline_asm inline_asm_labels '"1:\n"'
5284
5285 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5286
5287 if enabled aarch64; then
5288     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5289     # internal assembler in clang 3.3 does not support this instruction
5290     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5291     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5292
5293     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5294
5295 elif enabled alpha; then
5296
5297     check_cflags -mieee
5298
5299 elif enabled arm; then
5300
5301     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
5302
5303     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
5304 float func(float a, float b){ return a+b; }
5305 EOF
5306
5307     enabled thumb && check_cflags -mthumb || check_cflags -marm
5308
5309     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
5310         enable vfp_args
5311     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5312         enable vfp_args
5313     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5314         case "${cross_prefix:-$cc}" in
5315             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
5316             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
5317 __asm__ (".eabi_attribute 28, 1");
5318 int main(void) { return 0; }
5319 EOF
5320         esac
5321         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5322     fi
5323
5324     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5325     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5326     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5327     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5328     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5329     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5330     enabled setend  && check_insn setend  'setend be'
5331
5332     [ $target_os = linux ] || [ $target_os = android ] ||
5333         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5334             $ARCH_EXT_LIST_ARM
5335
5336     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5337
5338     check_as <<EOF && enable as_dn_directive
5339 ra .dn d0.i16
5340 .unreq ra
5341 EOF
5342     check_as <<EOF && enable as_fpu_directive
5343 .fpu neon
5344 EOF
5345
5346     # llvm's integrated assembler supports .object_arch from llvm 3.5
5347     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
5348 .object_arch armv4
5349 EOF
5350
5351     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5352
5353 elif enabled mips; then
5354
5355     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5356     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5357     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5358
5359     # Enable minimum ISA based on selected options
5360     if enabled mips64; then
5361         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5362         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5363         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5364     else
5365         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5366         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5367         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5368         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5369     fi
5370
5371     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5372     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5373     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
5374     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5375     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5376
5377 elif enabled parisc; then
5378
5379     if enabled gcc; then
5380         case $($cc -dumpversion) in
5381             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5382         esac
5383     fi
5384
5385 elif enabled ppc; then
5386
5387     enable local_aligned_8 local_aligned_16 local_aligned_32
5388
5389     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5390     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5391     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5392     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5393
5394     # AltiVec flags: The FSF version of GCC differs from the Apple version
5395     if enabled altivec; then
5396         check_cflags -maltivec -mabi=altivec &&
5397         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
5398         check_cflags -faltivec
5399
5400         # check if our compiler supports Motorola AltiVec C API
5401         check_cc <<EOF || disable altivec
5402 $inc_altivec_h
5403 int main(void) {
5404     vector signed int v1 = (vector signed int) { 0 };
5405     vector signed int v2 = (vector signed int) { 1 };
5406     v1 = vec_add(v1, v2);
5407     return 0;
5408 }
5409 EOF
5410
5411         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5412     fi
5413
5414     if enabled vsx; then
5415         check_cflags -mvsx &&
5416         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
5417     fi
5418
5419     if enabled power8; then
5420         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
5421     fi
5422
5423 elif enabled x86; then
5424
5425     check_builtin rdtsc    intrin.h   "__rdtsc()"
5426     check_builtin mm_empty mmintrin.h "_mm_empty()"
5427
5428     enable local_aligned_8 local_aligned_16 local_aligned_32
5429
5430     # check whether EBP is available on x86
5431     # As 'i' is stored on the stack, this program will crash
5432     # if the base pointer is used to access it because the
5433     # base pointer is cleared in the inline assembly code.
5434     check_exec_crash <<EOF && enable ebp_available
5435 volatile int i=0;
5436 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5437 return i;
5438 EOF
5439
5440     # check whether EBX is available on x86
5441     check_inline_asm ebx_available '""::"b"(0)' &&
5442         check_inline_asm ebx_available '"":::"%ebx"'
5443
5444     # check whether xmm clobbers are supported
5445     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5446
5447     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5448         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5449
5450     # check whether binutils is new enough to compile SSSE3/MMXEXT
5451     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5452     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5453
5454     if ! disabled_any asm mmx yasm; then
5455         if check_cmd $yasmexe --version; then
5456             enabled x86_64 && yasm_extra="-m amd64"
5457             yasm_debug="-g dwarf2"
5458         elif check_cmd nasm -v; then
5459             yasmexe=nasm
5460             yasm_debug="-g -F dwarf"
5461             if enabled x86_64; then
5462                 case "$objformat" in
5463                     elf)   objformat=elf64 ;;
5464                     win32) objformat=win64 ;;
5465                 esac
5466             fi
5467         fi
5468
5469         YASMFLAGS="-f $objformat $yasm_extra"
5470         enabled pic               && append YASMFLAGS "-DPIC"
5471         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
5472         case "$objformat" in
5473             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
5474         esac
5475
5476         check_yasm "movbe ecx, [5]" && enable yasm ||
5477             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
5478         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
5479         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
5480         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
5481         check_yasm "CPU amdnop" || disable cpunop
5482     fi
5483
5484     case "$cpu" in
5485         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5486             disable fast_clz
5487         ;;
5488     esac
5489
5490 fi
5491
5492 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
5493
5494 check_ldflags -Wl,--as-needed
5495 check_ldflags -Wl,-z,noexecstack
5496
5497 if check_func dlopen && check_func dlsym; then
5498     ldl=
5499 elif check_func dlopen -ldl && check_func dlsym -ldl; then
5500     ldl=-ldl
5501 fi
5502
5503 avisynth_demuxer_extralibs='$ldl'
5504 cuda_extralibs='$ldl'
5505 decklink_outdev_extralibs="$decklink_outdev_extralibs $ldl"
5506 decklink_indev_extralibs="$decklink_indev_extralibs $ldl"
5507 frei0r_filter_extralibs='$ldl'
5508 frei0r_src_filter_extralibs='$ldl'
5509 ladspa_filter_extralibs='$ldl'
5510 nvenc_extralibs='$ldl'
5511 coreimage_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5512 coreimagesrc_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5513
5514 if ! disabled network; then
5515     check_func getaddrinfo $network_extralibs
5516     check_func inet_aton $network_extralibs
5517
5518     check_type netdb.h "struct addrinfo"
5519     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5520     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5521     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5522     check_type poll.h "struct pollfd"
5523     check_type netinet/sctp.h "struct sctp_event_subscribe"
5524     check_struct "sys/socket.h" "struct msghdr" msg_flags
5525     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5526     check_type netinet/in.h "struct sockaddr_in6"
5527     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5528     check_type "sys/types.h sys/socket.h" socklen_t
5529
5530     # Prefer arpa/inet.h over winsock2
5531     if check_header arpa/inet.h ; then
5532         check_func closesocket
5533     elif check_header winsock2.h ; then
5534         check_func_headers winsock2.h closesocket -lws2 &&
5535             network_extralibs="-lws2" ||
5536         { check_func_headers winsock2.h closesocket -lws2_32 &&
5537             network_extralibs="-lws2_32"; } || disable winsock2_h network
5538         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5539
5540         check_type ws2tcpip.h socklen_t
5541         check_type ws2tcpip.h "struct addrinfo"
5542         check_type ws2tcpip.h "struct group_source_req"
5543         check_type ws2tcpip.h "struct ip_mreq_source"
5544         check_type ws2tcpip.h "struct ipv6_mreq"
5545         check_type winsock2.h "struct pollfd"
5546         check_struct winsock2.h "struct sockaddr" sa_len
5547         check_type ws2tcpip.h "struct sockaddr_in6"
5548         check_type ws2tcpip.h "struct sockaddr_storage"
5549     else
5550         disable network
5551     fi
5552 fi
5553
5554 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5555 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5556 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5557 check_builtin sarestart signal.h "SA_RESTART"
5558 check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" -lpthread
5559 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5560 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5561 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5562 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5563
5564 case "$custom_allocator" in
5565     jemalloc)
5566         # jemalloc by default does not use a prefix
5567         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5568     ;;
5569     tcmalloc)
5570         require_pkg_config libtcmalloc gperftools/tcmalloc.h tc_malloc
5571         malloc_prefix=tc_
5572     ;;
5573 esac
5574
5575 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5576 check_func  ${malloc_prefix}memalign            && enable memalign
5577 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5578
5579 check_func  access
5580 check_func_headers stdlib.h arc4random
5581 check_func_headers time.h clock_gettime ||
5582     { check_lib time.h clock_gettime -lrt && LIBRT="-lrt"; }
5583 check_func  fcntl
5584 check_func  fork
5585 check_func  gethrtime
5586 check_func  getopt
5587 check_func  getrusage
5588 check_func  gettimeofday
5589 check_func  isatty
5590 check_func  mach_absolute_time
5591 check_func  mkstemp
5592 check_func  mmap
5593 check_func  mprotect
5594 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5595 check_func_headers time.h nanosleep ||
5596     { check_lib time.h nanosleep -lrt && LIBRT="-lrt"; }
5597 check_func  sched_getaffinity
5598 check_func  setrlimit
5599 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5600 check_func  strerror_r
5601 check_func  sysconf
5602 check_func  sysctl
5603 check_func  usleep
5604
5605 check_func_headers conio.h kbhit
5606 check_func_headers io.h setmode
5607 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5608 check_func_headers stdlib.h getenv
5609 check_func_headers sys/stat.h lstat
5610
5611 check_func_headers windows.h CoTaskMemFree -lole32
5612 check_func_headers windows.h GetProcessAffinityMask
5613 check_func_headers windows.h GetProcessTimes
5614 check_func_headers windows.h GetSystemTimeAsFileTime
5615 check_func_headers windows.h LoadLibrary
5616 check_func_headers windows.h MapViewOfFile
5617 check_func_headers windows.h PeekNamedPipe
5618 check_func_headers windows.h SetConsoleTextAttribute
5619 check_func_headers windows.h SetConsoleCtrlHandler
5620 check_func_headers windows.h Sleep
5621 check_func_headers windows.h VirtualAlloc
5622 check_struct windows.h "CONDITION_VARIABLE" Ptr
5623 check_func_headers glob.h glob
5624 enabled xlib &&
5625     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5626
5627 check_header AudioToolbox/AudioToolbox.h
5628 check_header direct.h
5629 check_header dirent.h
5630 check_header dlfcn.h
5631 check_header d3d11.h
5632 check_header dxva.h
5633 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5634 check_header io.h
5635 check_header libcrystalhd/libcrystalhd_if.h
5636 check_header mach/mach_time.h
5637 check_header malloc.h
5638 check_header net/udplite.h
5639 check_header poll.h
5640 check_header sys/mman.h
5641 check_header sys/param.h
5642 check_header sys/resource.h
5643 check_header sys/select.h
5644 check_header sys/time.h
5645 check_header sys/un.h
5646 check_header termios.h
5647 check_header unistd.h
5648 check_header valgrind/valgrind.h
5649 check_header vdpau/vdpau.h
5650 check_header vdpau/vdpau_x11.h
5651 check_header VideoDecodeAcceleration/VDADecoder.h
5652 check_header VideoToolbox/VideoToolbox.h
5653 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5654 enabled videotoolbox && check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferColorPrimaries_ITU_R_2020 -framework CoreVideo
5655 check_header windows.h
5656 check_header X11/extensions/XvMClib.h
5657 check_header asm/types.h
5658
5659 # it seems there are versions of clang in some distros that try to use the
5660 # gcc headers, which explodes for stdatomic
5661 # so we also check that atomics actually work here
5662 check_builtin stdatomic_h stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0)"
5663
5664 check_lib "windows.h shellapi.h" CommandLineToArgvW   -lshell32
5665 check_lib "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
5666 check_lib "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
5667
5668 check_lib "CoreServices/CoreServices.h" UTGetOSTypeFromString "-framework CoreServices"
5669
5670 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5671
5672 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5673 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5674 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5675 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5676 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5677
5678 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
5679 check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
5680 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
5681 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
5682 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5683 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5684 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
5685 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
5686
5687 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5688
5689 check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt
5690
5691 if ! disabled w32threads && ! enabled pthreads; then
5692     check_func_headers "windows.h process.h" _beginthreadex &&
5693         enable w32threads || disable w32threads
5694     if ! enabled w32threads && enabled winrt; then
5695         check_func_headers "windows.h" CreateThread &&
5696             enable w32threads || disable w32threads
5697     fi
5698 fi
5699
5700 # check for some common methods of building with pthread support
5701 # do this before the optional library checks as some of them require pthreads
5702 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5703     enable pthreads
5704     if check_func pthread_join -pthread && check_func pthread_create -pthread; then
5705         add_cflags -pthread
5706         add_extralibs -pthread
5707     elif check_func pthread_join -pthreads && check_func pthread_create -pthreads; then
5708         add_cflags -pthreads
5709         add_extralibs -pthreads
5710     elif check_func pthread_join -ldl -pthread && check_func pthread_create -ldl -pthread; then
5711         add_cflags -ldl -pthread
5712         add_extralibs -ldl -pthread
5713     elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
5714         add_extralibs -lpthreadGC2
5715     elif check_lib pthread.h pthread_join -lpthread && check_lib pthread.h pthread_create -lpthread; then
5716         :
5717     elif ! check_func pthread_join && ! check_func pthread_create; then
5718         disable pthreads
5719     fi
5720     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5721 fi
5722
5723
5724 if enabled pthreads; then
5725   check_func pthread_cancel
5726 fi
5727
5728 enabled pthreads &&
5729     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)"
5730
5731 disabled  zlib || check_lib  zlib.h      zlibVersion    -lz    || disable  zlib
5732 disabled bzlib || check_lib bzlib.h BZ2_bzlibVersion    -lbz2  || disable bzlib
5733 disabled  lzma || check_lib  lzma.h lzma_version_number -llzma || disable lzma
5734
5735 check_lib math.h sin -lm && LIBM="-lm"
5736 disabled crystalhd || check_lib "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd || disable crystalhd
5737
5738 atan2f_args=2
5739 copysign_args=2
5740 hypot_args=2
5741 ldexpf_args=2
5742 powf_args=2
5743
5744 for func in $MATH_FUNCS; do
5745     eval check_mathfunc $func \${${func}_args:-1}
5746 done
5747
5748 for func in $COMPLEX_FUNCS; do
5749     eval check_complexfunc $func \${${func}_args:-1}
5750 done
5751
5752 # these are off by default, so fail if requested and not available
5753 enabled avfoundation_indev && { check_header_objcc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
5754 enabled avfoundation_indev && { check_lib CoreGraphics/CoreGraphics.h CGGetActiveDisplayList -framework CoreGraphics ||
5755                                 check_lib ApplicationServices/ApplicationServices.h CGGetActiveDisplayList -framework ApplicationServices; }
5756 enabled cuda              && check_header cuda.h # this is not a dependency
5757 enabled cuvid             && { enabled cuda ||
5758                                die "ERROR: CUVID requires CUDA"; }
5759 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5760 enabled coreimage_filter  && { check_header_objcc QuartzCore/CoreImage.h || disable coreimage_filter; }
5761 enabled coreimagesrc_filter && { check_header_objcc QuartzCore/CoreImage.h || disable coreimagesrc_filter; }
5762 enabled decklink          && { { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; } &&
5763                                { check_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a060100" || die "ERROR: Decklink API version must be >= 10.6.1."; } }
5764 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
5765 enabled gmp               && require gmp gmp.h mpz_export -lgmp
5766 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
5767 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads &&
5768                                check_lib "dlfcn.h" dlopen -ldl || die "ERROR: jni not found"; }
5769 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
5770 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5771 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
5772 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
5773 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
5774 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5775                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
5776                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5777 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
5778 enabled libfdk_aac        && { use_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5779                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5780                                  warn "using libfdk without pkg-config"; } }
5781 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"
5782 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_libs
5783 enabled fontconfig        && enable libfontconfig
5784 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
5785 enabled libfreetype       && require_libfreetype
5786 enabled libfribidi        && require_pkg_config fribidi fribidi.h fribidi_version_info
5787 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
5788 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5789                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
5790                                done || die "ERROR: libgsm not found"; }
5791 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
5792 enabled libkvazaar        && require_pkg_config "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
5793 enabled libmfx            && require_pkg_config libmfx "mfx/mfxvideo.h" MFXInit
5794 enabled libmodplug        && require_pkg_config libmodplug libmodplug/modplug.h ModPlug_Load
5795 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5796 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
5797 enabled libnpp            && require libnpp npp.h nppGetLibVersion -lnppi -lnppc
5798 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5799 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5800 enabled libopencv         && { check_header opencv2/core/core_c.h &&
5801                                { use_pkg_config opencv opencv2/core/core_c.h cvCreateImageHeader ||
5802                                  require opencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
5803                                require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader; }
5804 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
5805 enabled libopenjpeg       && { { check_lib openjpeg-2.1/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5806                                check_lib openjpeg-2.1/openjpeg.h opj_version -lopenjp2 ||
5807                                { check_lib openjpeg-2.0/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5808                                { check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5809                                { check_lib openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5810                                die "ERROR: libopenjpeg not found"; }
5811 enabled libopenmpt        && require_pkg_config "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create
5812 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
5813 enabled libpulse          && require_pkg_config libpulse pulse/pulseaudio.h pa_context_new
5814 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
5815 enabled librubberband     && require_pkg_config "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new
5816 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
5817 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
5818 enabled libsmbclient      && { use_pkg_config smbclient libsmbclient.h smbc_init ||
5819                                require smbclient libsmbclient.h smbc_init -lsmbclient; }
5820 enabled libsnappy         && require snappy snappy-c.h snappy_compress -lsnappy
5821 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr && LIBSOXR="-lsoxr"
5822 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
5823 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
5824 enabled libtesseract      && require_pkg_config tesseract tesseract/capi.h TessBaseAPICreate
5825 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
5826 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
5827                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
5828                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
5829 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
5830 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
5831 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
5832 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
5833
5834 enabled libvpx            && {
5835     enabled libvpx_vp8_decoder && {
5836         use_pkg_config "vpx >= 0.9.1" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
5837             check_lib "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
5838                 die "ERROR: libvpx decoder version must be >=0.9.1";
5839     }
5840     enabled libvpx_vp8_encoder && {
5841         use_pkg_config "vpx >= 0.9.7" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
5842             check_lib "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
5843                 die "ERROR: libvpx encoder version must be >=0.9.7";
5844     }
5845     enabled libvpx_vp9_decoder && {
5846         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
5847             check_lib "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx ||
5848                 disable libvpx_vp9_decoder;
5849     }
5850     enabled libvpx_vp9_encoder && {
5851         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
5852             check_lib "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx ||
5853                 disable libvpx_vp9_encoder;
5854     }
5855     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
5856         die "libvpx enabled but no supported decoders found"
5857     fi
5858 }
5859
5860 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
5861 enabled libwebp           && {
5862     enabled libwebp_encoder      && require_pkg_config "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
5863     enabled libwebp_anim_encoder && { use_pkg_config "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit || disable libwebp_anim_encoder; } }
5864 enabled libx264           && { use_pkg_config x264 "stdint.h x264.h" x264_encoder_encode ||
5865                                { require libx264 "stdint.h x264.h" x264_encoder_encode -lx264 &&
5866                                  warn "using libx264 without pkg-config"; } } &&
5867                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
5868                                die "ERROR: libx264 must be installed and version must be >= 0.118."; } &&
5869                              { check_cpp_condition x264.h "X264_MPEG2" &&
5870                                enable libx262; }
5871 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
5872                              { check_cpp_condition x265.h "X265_BUILD >= 68" ||
5873                                die "ERROR: libx265 version must be >= 68."; }
5874 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode -lxavs
5875 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
5876 enabled libzimg           && require_pkg_config "zimg >= 2.3.0" zimg.h zimg_get_api_version
5877 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
5878 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi &&
5879                              { check_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
5880                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
5881 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
5882 enabled mmal              && { check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
5883                                 { ! enabled cross_compile && {
5884                                     add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline ;
5885                                     add_extralibs -L/opt/vc/lib/ -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ;
5886                                     check_lib interface/mmal/mmal.h mmal_port_connect ; }
5887                                 check_lib interface/mmal/mmal.h mmal_port_connect ; } ||
5888                                die "ERROR: mmal not found"; }
5889 enabled mmal && check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"
5890
5891 enabled netcdf            && require_pkg_config netcdf netcdf.h nc_inq_libvers
5892 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
5893                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
5894                                die "ERROR: openal not found"; } &&
5895                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
5896                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
5897 enabled opencl            && { check_lib OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
5898                                check_lib CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
5899                                die "ERROR: opencl not found"; } &&
5900                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
5901                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
5902                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
5903 enabled opengl            && { check_lib GL/glx.h glXGetProcAddress "-lGL" ||
5904                                check_lib windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
5905                                check_lib OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
5906                                check_lib ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
5907                                die "ERROR: opengl not found."
5908                              }
5909 enabled omx_rpi && enable omx
5910 enabled omx               && { check_header OMX_Core.h ||
5911                                 { ! enabled cross_compile && enabled omx_rpi && {
5912                                     add_cflags -isystem/opt/vc/include/IL ; }
5913                                 check_header OMX_Core.h ; } ||
5914                                die "ERROR: OpenMAX IL headers not found"; }
5915 enabled openssl           && { use_pkg_config openssl openssl/ssl.h OPENSSL_init_ssl ||
5916                                use_pkg_config openssl openssl/ssl.h SSL_library_init ||
5917                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
5918                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
5919                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
5920                                die "ERROR: openssl not found"; }
5921 enabled qtkit_indev      && { check_header_objcc QTKit/QTKit.h || disable qtkit_indev; }
5922
5923 # libdc1394 check
5924 if enabled libdc1394; then
5925     { require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new &&
5926         enable libdc1394_2; } ||
5927     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
5928         enable libdc1394_1; } ||
5929     die "ERROR: No version of libdc1394 found "
5930 fi
5931
5932 if enabled gcrypt; then
5933     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
5934     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
5935         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
5936         gcrypt_libs=$("${GCRYPT_CONFIG}" --libs)
5937         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_libs ||
5938             die "ERROR: gcrypt not found"
5939         add_cflags $gcrypt_cflags && add_extralibs $gcrypt_libs
5940     else
5941         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
5942     fi
5943 fi
5944
5945 disabled sdl && disable sdl2
5946 if ! disabled sdl2; then
5947     SDL2_CONFIG="${cross_prefix}sdl2-config"
5948     if check_pkg_config sdl2 SDL_events.h SDL_PollEvent; then
5949         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
5950         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
5951         check_func SDL_Init $sdl2_libs $sdl2_cflags && enable sdl2
5952     else
5953       if "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
5954         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
5955         sdl2_libs=$("${SDL2_CONFIG}" --libs)
5956         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
5957         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
5958         check_func SDL_Init $sdl2_libs $sdl2_cflags && enable sdl2
5959       fi
5960     fi
5961     if test $target_os = "mingw32"; then
5962         sdl2_libs="$sdl2_libs -mconsole"
5963     fi
5964 fi
5965 enabled sdl2 && enable sdl && add_cflags $sdl2_cflags && add_extralibs $sdl2_libs
5966
5967 disabled securetransport || { check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5968     check_lib "Security/SecureTransport.h Security/Security.h" "SSLCreateContext SecItemImport" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5969     enable securetransport; }
5970
5971 disabled schannel || { check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
5972                        check_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" && enable schannel && add_extralibs -lsecur32; }
5973
5974 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
5975 enabled makeinfo \
5976     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
5977     && enable makeinfo_html || disable makeinfo_html
5978 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
5979 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
5980 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
5981 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
5982
5983 check_header linux/fb.h
5984 check_header linux/videodev.h
5985 check_header linux/videodev2.h
5986 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5987
5988 check_header sys/videoio.h
5989 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5990
5991 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
5992 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
5993 # w32api 3.12 had it defined wrong
5994 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
5995
5996 check_type "dshow.h" IBaseFilter
5997
5998 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
5999 { check_header dev/bktr/ioctl_meteor.h &&
6000   check_header dev/bktr/ioctl_bt848.h; } ||
6001 { check_header machine/ioctl_meteor.h &&
6002   check_header machine/ioctl_bt848.h; } ||
6003 { check_header dev/video/meteor/ioctl_meteor.h &&
6004   check_header dev/video/bktr/ioctl_bt848.h; } ||
6005 check_header dev/ic/bt8xx.h
6006
6007 check_header sndio.h
6008 if check_struct sys/soundcard.h audio_buf_info bytes; then
6009     enable_safe sys/soundcard.h
6010 else
6011     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
6012     #include <sys/soundcard.h>
6013     audio_buf_info abc;
6014 EOF
6015 fi
6016 check_header soundcard.h
6017
6018 enabled_any alsa_indev alsa_outdev &&
6019     check_lib alsa/asoundlib.h snd_pcm_htimestamp -lasound
6020
6021 enabled jack_indev && check_lib jack/jack.h jack_client_open -ljack &&
6022     check_func jack_port_get_latency_range -ljack
6023
6024 enabled_any sndio_indev sndio_outdev && check_lib sndio.h sio_open -lsndio
6025
6026 if enabled libcdio; then
6027     check_lib "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6028     check_lib "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6029     die "ERROR: No usable libcdio/cdparanoia found"
6030 fi
6031
6032 if ! disabled libxcb; then
6033     check_pkg_config "xcb >= 1.4" xcb/xcb.h xcb_connect || {
6034         enabled libxcb && die "ERROR: libxcb >= 1.4 not found";
6035     } && enable libxcb
6036
6037 if enabled libxcb; then
6038     disabled libxcb_shm || {
6039         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
6040             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
6041         } && check_header sys/shm.h && enable libxcb_shm; }
6042
6043     disabled libxcb_xfixes || {
6044         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
6045             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
6046         } && enable libxcb_xfixes; }
6047
6048     disabled libxcb_shape || {
6049         check_pkg_config xcb-shape xcb/shape.h xcb_shape_get_rectangles || {
6050             enabled libxcb_shape && die "ERROR: libxcb_shape not found";
6051         } && enable libxcb_shape; }
6052
6053     add_cflags $xcb_cflags $xcb_shm_cflags $xcb_xfixes_cflags $xcb_shape_cflags
6054     add_extralibs $xcb_libs $xcb_shm_libs $xcb_xfixes_libs $xcb_shape_libs
6055 fi
6056 fi
6057
6058 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6059
6060 enabled dxva2api_h &&
6061     check_cc <<EOF && enable dxva2api_cobj
6062 #define _WIN32_WINNT 0x0600
6063 #define COBJMACROS
6064 #include <windows.h>
6065 #include <d3d9.h>
6066 #include <dxva2api.h>
6067 int main(void) { IDirectXVideoDecoder *o = NULL; IDirectXVideoDecoder_Release(o); return 0; }
6068 EOF
6069
6070 enabled vaapi &&
6071     check_lib va/va.h vaInitialize -lva ||
6072     disable vaapi
6073
6074 enabled vaapi &&
6075     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
6076     disable vaapi
6077
6078 enabled vaapi &&
6079     check_lib "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm &&
6080     enable vaapi_drm
6081
6082 enabled vdpau &&
6083     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
6084     disable vdpau
6085
6086 enabled_any vaapi vdpau && check_lib X11/Xlib.h XOpenDisplay -lX11 && enable xlib
6087
6088 enabled vaapi && enabled xlib &&
6089     check_lib "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 &&
6090     enable vaapi_x11
6091
6092 enabled vdpau && enabled xlib &&
6093     check_lib "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
6094     enable vdpau_x11
6095
6096 if enabled x86; then
6097     case $target_os in
6098         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6099             ;;
6100         *)
6101             disable cuda cuvid nvenc
6102             ;;
6103     esac
6104 else
6105     disable cuda cuvid nvenc
6106 fi
6107
6108 enabled nvenc &&
6109     check_cc -I$source_path <<EOF || disable nvenc
6110 #include "compat/nvenc/nvEncodeAPI.h"
6111 NV_ENCODE_API_FUNCTION_LIST flist;
6112 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6113 int main(void) { return 0; }
6114 EOF
6115
6116 # Funny iconv installations are not unusual, so check it after all flags have been set
6117 disabled iconv || check_func_headers iconv.h iconv || check_lib iconv.h iconv -liconv || disable iconv
6118
6119 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6120
6121 # add some useful compiler flags if supported
6122 check_cflags -Wdeclaration-after-statement
6123 check_cflags -Wall
6124 check_cflags -Wdisabled-optimization
6125 check_cflags -Wpointer-arith
6126 check_cflags -Wredundant-decls
6127 check_cflags -Wwrite-strings
6128 check_cflags -Wtype-limits
6129 check_cflags -Wundef
6130 check_cflags -Wmissing-prototypes
6131 check_cflags -Wno-pointer-to-int-cast
6132 check_cflags -Wstrict-prototypes
6133 check_cflags -Wempty-body
6134 enabled extra_warnings && check_cflags -Winline
6135 enabled extra_warnings && check_cflags -Wcast-qual
6136
6137 check_disable_warning(){
6138     warning_flag=-W${1#-Wno-}
6139     test_cflags $warning_flag && add_cflags $1
6140 }
6141
6142 check_disable_warning -Wno-parentheses
6143 check_disable_warning -Wno-switch
6144 check_disable_warning -Wno-format-zero-length
6145 check_disable_warning -Wno-pointer-sign
6146 check_disable_warning -Wno-unused-const-variable
6147
6148 # add some linker flags
6149 check_ldflags -Wl,--warn-common
6150 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6151 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
6152 enabled rpath && add_ldlibflags -Wl,-rpath,$libdir
6153 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6154
6155 # add some strip flags
6156 # -wN '..@*' is more selective than -x, but not available everywhere.
6157 check_stripflags -wN \'..@*\' || check_stripflags -x
6158
6159 enabled neon_clobber_test &&
6160     check_ldflags -Wl,--wrap,avcodec_open2              \
6161                   -Wl,--wrap,avcodec_decode_audio4      \
6162                   -Wl,--wrap,avcodec_decode_video2      \
6163                   -Wl,--wrap,avcodec_decode_subtitle2   \
6164                   -Wl,--wrap,avcodec_encode_audio2      \
6165                   -Wl,--wrap,avcodec_encode_video2      \
6166                   -Wl,--wrap,avcodec_encode_subtitle    \
6167                   -Wl,--wrap,avcodec_send_packet        \
6168                   -Wl,--wrap,avcodec_receive_packet     \
6169                   -Wl,--wrap,avcodec_send_frame         \
6170                   -Wl,--wrap,avcodec_receive_frame      \
6171                   -Wl,--wrap,swr_convert                \
6172                   -Wl,--wrap,avresample_convert ||
6173     disable neon_clobber_test
6174
6175 enabled xmm_clobber_test &&
6176     check_ldflags -Wl,--wrap,avcodec_open2              \
6177                   -Wl,--wrap,avcodec_decode_audio4      \
6178                   -Wl,--wrap,avcodec_decode_video2      \
6179                   -Wl,--wrap,avcodec_decode_subtitle2   \
6180                   -Wl,--wrap,avcodec_encode_audio2      \
6181                   -Wl,--wrap,avcodec_encode_video2      \
6182                   -Wl,--wrap,avcodec_encode_subtitle    \
6183                   -Wl,--wrap,avcodec_send_packet        \
6184                   -Wl,--wrap,avcodec_receive_packet     \
6185                   -Wl,--wrap,avcodec_send_frame         \
6186                   -Wl,--wrap,avcodec_receive_frame      \
6187                   -Wl,--wrap,swr_convert                \
6188                   -Wl,--wrap,avresample_convert         \
6189                   -Wl,--wrap,sws_scale ||
6190     disable xmm_clobber_test
6191
6192 check_ld "cc" <<EOF && enable proper_dce
6193 extern const int array[512];
6194 static inline int func(void) { return array[0]; }
6195 int main(void) { return 0; }
6196 EOF
6197
6198 if enabled proper_dce; then
6199     echo "X { local: *; };" > $TMPV
6200     if test_ldflags -Wl,${version_script},$TMPV; then
6201         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6202         check_cc <<EOF && enable symver_asm_label
6203 void ff_foo(void) __asm__ ("av_foo@VERSION");
6204 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6205 EOF
6206         check_cc <<EOF && enable symver_gnu_asm
6207 __asm__(".symver ff_foo,av_foo@VERSION");
6208 void ff_foo(void) {}
6209 EOF
6210     fi
6211 fi
6212
6213 if [ -z "$optflags" ]; then
6214     if enabled small; then
6215         optflags=$cflags_size
6216     elif enabled optimizations; then
6217         optflags=$cflags_speed
6218     else
6219         optflags=$cflags_noopt
6220     fi
6221 fi
6222
6223 check_optflags(){
6224     check_cflags "$@"
6225     enabled lto && check_ldflags "$@"
6226 }
6227
6228
6229 if enabled lto; then
6230     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6231     check_cflags  -flto
6232     check_ldflags -flto $cpuflags
6233     disable inline_asm_direct_symbol_refs
6234 fi
6235
6236 check_optflags $optflags
6237 check_optflags -fno-math-errno
6238 check_optflags -fno-signed-zeros
6239
6240 enabled ftrapv && check_cflags -ftrapv
6241
6242 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6243 int x;
6244 EOF
6245
6246
6247 if enabled icc; then
6248     # Just warnings, no remarks
6249     check_cflags -w1
6250     # -wd: Disable following warnings
6251     # 144, 167, 556: -Wno-pointer-sign
6252     # 188: enumerated type mixed with another type
6253     # 1292: attribute "foo" ignored
6254     # 1419: external declaration in primary source file
6255     # 10006: ignoring unknown option -fno-signed-zeros
6256     # 10148: ignoring unknown option -Wno-parentheses
6257     # 10156: ignoring option '-W'; no argument required
6258     # 13200: No EMMS instruction before call to function
6259     # 13203: No EMMS instruction before return from function
6260     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6261     # 11030: Warning unknown option --as-needed
6262     # 10156: ignoring option '-export'; no argument required
6263     check_ldflags -wd10156,11030
6264     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6265     enable ebp_available
6266     # The test above does not test linking
6267     enabled lto && disable symver_asm_label
6268     if enabled x86_32; then
6269         icc_version=$($cc -dumpversion)
6270         test ${icc_version%%.*} -ge 11 &&
6271             check_cflags -falign-stack=maintain-16-byte ||
6272             disable aligned_stack
6273     fi
6274 elif enabled ccc; then
6275     # disable some annoying warnings
6276     add_cflags -msg_disable bitnotint
6277     add_cflags -msg_disable mixfuncvoid
6278     add_cflags -msg_disable nonstandcast
6279     add_cflags -msg_disable unsupieee
6280 elif enabled gcc; then
6281     check_optflags -fno-tree-vectorize
6282     check_cflags -Werror=format-security
6283     check_cflags -Werror=implicit-function-declaration
6284     check_cflags -Werror=missing-prototypes
6285     check_cflags -Werror=return-type
6286     check_cflags -Werror=vla
6287     check_cflags -Wformat
6288     check_cflags -fdiagnostics-color=auto
6289     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6290 elif enabled llvm_gcc; then
6291     check_cflags -mllvm -stack-alignment=16
6292 elif enabled clang; then
6293     check_cflags -mllvm -stack-alignment=16
6294     check_cflags -mstack-alignment=16
6295     check_cflags -Qunused-arguments
6296     check_cflags -Werror=implicit-function-declaration
6297     check_cflags -Werror=missing-prototypes
6298     check_cflags -Werror=return-type
6299 elif enabled cparser; then
6300     add_cflags -Wno-missing-variable-declarations
6301     add_cflags -Wno-empty-statement
6302 elif enabled armcc; then
6303     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6304     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6305     # 2523: use of inline assembly is deprecated
6306     add_cflags -W${armcc_opt},--diag_suppress=2523
6307     add_cflags -W${armcc_opt},--diag_suppress=1207
6308     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6309     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6310     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6311     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6312 elif enabled tms470; then
6313     add_cflags -pds=824 -pds=837
6314     disable inline_asm
6315 elif enabled pathscale; then
6316     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6317 elif enabled_any msvc icl; then
6318     enabled x86_32 && disable aligned_stack
6319     enabled_all x86_32 debug && add_cflags -Oy-
6320     enabled debug && add_ldflags -debug
6321     enable pragma_deprecated
6322     if enabled icl; then
6323         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6324         # (correctly) on icl 13.x.
6325         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6326             add_cflags -Qansi-alias
6327         # Some inline asm is not compilable in debug
6328         if enabled debug; then
6329             disable ebp_available
6330             disable ebx_available
6331         fi
6332     fi
6333     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6334     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
6335     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6336     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6337     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6338     # MSVC 2013 and newer can handle it fine.
6339     # If this declspec fails, force including stdlib.h before the restrict redefinition
6340     # happens in config.h.
6341     if [ $_restrict != restrict ]; then
6342         check_cc <<EOF || add_cflags -FIstdlib.h
6343 __declspec($_restrict) void* foo(int);
6344 EOF
6345     fi
6346     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6347     # Issue has been fixed in MSVC v19.00.24218.
6348     check_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6349         check_cflags -d2SSAOptimizer-
6350     # enable utf-8 source processing on VS2015 U2 and newer
6351     check_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6352         add_cflags -utf-8
6353 fi
6354
6355 for pfx in "" host_; do
6356     varname=${pfx%_}cc_type
6357     eval "type=\$$varname"
6358     if [ $type = "msvc" ]; then
6359         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6360 static inline int foo(int a) { return a; }
6361 EOF
6362     fi
6363 done
6364
6365 case $as_type in
6366     clang)
6367         add_asflags -Qunused-arguments
6368     ;;
6369 esac
6370
6371 case $ld_type in
6372     clang)
6373         check_ldflags -Qunused-arguments
6374     ;;
6375 esac
6376
6377 case $target_os in
6378     osf1)
6379         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
6380     ;;
6381     plan9)
6382         add_cppflags -Dmain=plan9_main
6383     ;;
6384 esac
6385
6386 enable frame_thread_encoder
6387
6388 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6389
6390 check_deps $CONFIG_LIST       \
6391            $CONFIG_EXTRA      \
6392            $HAVE_LIST         \
6393            $ALL_COMPONENTS    \
6394
6395 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"
6396
6397
6398 if test $target_os = "haiku"; then
6399     disable memalign
6400     disable posix_memalign
6401 fi
6402
6403 enabled_all dxva2 dxva2api_cobj CoTaskMemFree &&
6404     prepend ffmpeg_libs $($ldflags_filter "-lole32") &&
6405     enable dxva2_lib
6406
6407 # add_dep lib dep
6408 # -> enable ${lib}_deps_${dep}
6409 # -> add $dep to ${lib}_deps only once
6410 add_dep() {
6411     lib=$1
6412     dep=$2
6413     enabled "${lib}_deps_${dep}" && return 0
6414     enable  "${lib}_deps_${dep}"
6415     prepend "${lib}_deps" $dep
6416 }
6417
6418 # merge deps lib components
6419 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
6420 merge_deps() {
6421     lib=$1
6422     shift
6423     for comp in $*; do
6424         enabled $comp || continue
6425         eval "dep=\"\$${comp}_deps\""
6426         for d in $dep; do
6427             add_dep $lib $d
6428         done
6429     done
6430 }
6431
6432 merge_deps libavfilter $FILTER_LIST
6433
6434 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6435
6436 for thread in $THREADS_LIST; do
6437     if enabled $thread; then
6438         test -n "$thread_type" &&
6439             die "ERROR: Only one thread type must be selected." ||
6440             thread_type="$thread"
6441     fi
6442 done
6443
6444 if disabled stdatomic_h; then
6445     if enabled atomics_gcc; then
6446         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6447     elif enabled atomics_win32; then
6448         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6449     elif enabled atomics_suncc; then
6450         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6451     elif enabled pthreads; then
6452         add_compat atomics/pthread/stdatomic.o
6453         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6454     else
6455         enabled threads && die "Threading is enabled, but no atomics are available"
6456         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6457     fi
6458 fi
6459
6460 # Check if requested libraries were found.
6461 for lib in $AUTODETECT_LIBS; do
6462     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6463 done
6464
6465 enabled zlib && add_cppflags -DZLIB_CONST
6466
6467 # conditional library dependencies, in linking order
6468 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6469 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6470 enabled aresample_filter    && prepend avfilter_deps "swresample"
6471 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6472 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6473 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6474 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6475 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6476 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6477 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6478 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6479 enabled pan_filter          && prepend avfilter_deps "swresample"
6480 enabled pp_filter           && prepend avfilter_deps "postproc"
6481 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6482 enabled resample_filter && prepend avfilter_deps "avresample"
6483 enabled sab_filter          && prepend avfilter_deps "swscale"
6484 enabled scale_filter    && prepend avfilter_deps "swscale"
6485 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6486 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6487 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6488 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6489 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6490 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6491 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6492 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6493 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6494
6495 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6496
6497 enabled opus_decoder    && prepend avcodec_deps "swresample"
6498
6499 expand_deps(){
6500     lib_deps=${1}_deps
6501     eval "deps=\$$lib_deps"
6502     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6503     unique $lib_deps
6504 }
6505
6506 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6507 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6508
6509 map 'expand_deps $v' $LIBRARY_LIST
6510
6511 license="LGPL version 2.1 or later"
6512 if enabled nonfree; then
6513     license="nonfree and unredistributable"
6514 elif enabled gplv3; then
6515     license="GPL version 3 or later"
6516 elif enabled lgplv3; then
6517     license="LGPL version 3 or later"
6518 elif enabled gpl; then
6519     license="GPL version 2 or later"
6520 fi
6521
6522 if test "$quiet" != "yes"; then
6523
6524 echo "install prefix            $prefix"
6525 echo "source path               $source_path"
6526 echo "C compiler                $cc"
6527 echo "C library                 $libc_type"
6528 if test "$host_cc" != "$cc"; then
6529     echo "host C compiler           $host_cc"
6530     echo "host C library            $host_libc_type"
6531 fi
6532 echo "ARCH                      $arch ($cpu)"
6533 if test "$build_suffix" != ""; then
6534     echo "build suffix              $build_suffix"
6535 fi
6536 if test "$progs_suffix" != ""; then
6537     echo "progs suffix              $progs_suffix"
6538 fi
6539 if test "$extra_version" != ""; then
6540     echo "version string suffix     $extra_version"
6541 fi
6542 echo "big-endian                ${bigendian-no}"
6543 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6544 if enabled x86; then
6545     echo "${yasmexe}                      ${yasm-no}"
6546     echo "MMX enabled               ${mmx-no}"
6547     echo "MMXEXT enabled            ${mmxext-no}"
6548     echo "3DNow! enabled            ${amd3dnow-no}"
6549     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6550     echo "SSE enabled               ${sse-no}"
6551     echo "SSSE3 enabled             ${ssse3-no}"
6552     echo "AESNI enabled             ${aesni-no}"
6553     echo "AVX enabled               ${avx-no}"
6554     echo "XOP enabled               ${xop-no}"
6555     echo "FMA3 enabled              ${fma3-no}"
6556     echo "FMA4 enabled              ${fma4-no}"
6557     echo "i686 features enabled     ${i686-no}"
6558     echo "CMOV is fast              ${fast_cmov-no}"
6559     echo "EBX available             ${ebx_available-no}"
6560     echo "EBP available             ${ebp_available-no}"
6561 fi
6562 if enabled aarch64; then
6563     echo "NEON enabled              ${neon-no}"
6564     echo "VFP enabled               ${vfp-no}"
6565 fi
6566 if enabled arm; then
6567     echo "ARMv5TE enabled           ${armv5te-no}"
6568     echo "ARMv6 enabled             ${armv6-no}"
6569     echo "ARMv6T2 enabled           ${armv6t2-no}"
6570     echo "VFP enabled               ${vfp-no}"
6571     echo "NEON enabled              ${neon-no}"
6572     echo "THUMB enabled             ${thumb-no}"
6573 fi
6574 if enabled mips; then
6575     echo "MIPS FPU enabled          ${mipsfpu-no}"
6576     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6577     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6578     echo "MIPS MSA enabled          ${msa-no}"
6579     echo "LOONGSON MMI enabled      ${mmi-no}"
6580 fi
6581 if enabled ppc; then
6582     echo "AltiVec enabled           ${altivec-no}"
6583     echo "VSX enabled               ${vsx-no}"
6584     echo "POWER8 enabled            ${power8-no}"
6585     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6586     echo "dcbzl available           ${dcbzl-no}"
6587 fi
6588 echo "debug symbols             ${debug-no}"
6589 echo "strip symbols             ${stripping-no}"
6590 echo "optimize for size         ${small-no}"
6591 echo "optimizations             ${optimizations-no}"
6592 echo "static                    ${static-no}"
6593 echo "shared                    ${shared-no}"
6594 echo "postprocessing support    ${postproc-no}"
6595 echo "network support           ${network-no}"
6596 echo "threading support         ${thread_type-no}"
6597 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6598 echo "texi2html enabled         ${texi2html-no}"
6599 echo "perl enabled              ${perl-no}"
6600 echo "pod2man enabled           ${pod2man-no}"
6601 echo "makeinfo enabled          ${makeinfo-no}"
6602 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6603 test -n "$random_seed" &&
6604     echo "random seed               ${random_seed}"
6605 echo
6606
6607 echo "External libraries:"
6608 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_in_columns
6609 echo
6610
6611 echo "External libraries providing hardware acceleration:"
6612 print_enabled '' $HWACCEL_LIBRARY_LIST | print_in_columns
6613 echo
6614
6615 echo "Libraries:"
6616 print_enabled '' $LIBRARY_LIST | print_in_columns
6617 echo
6618
6619 echo "Programs:"
6620 print_enabled '' $PROGRAM_LIST | print_in_columns
6621 echo
6622
6623 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6624     echo "Enabled ${type}s:"
6625     eval list=\$$(toupper $type)_LIST
6626     print_enabled '_*' $list | print_in_columns
6627     echo
6628 done
6629
6630 echo "License: $license"
6631
6632 echo "Creating configuration files ..."
6633
6634 fi # test "$quiet" != "yes"
6635
6636 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6637
6638 enabled stripping || strip="echo skipping strip"
6639
6640 config_files="$TMPH config.mak doc/config.texi"
6641
6642 cat > config.mak <<EOF
6643 # Automatically generated by configure - do not modify!
6644 ifndef FFMPEG_CONFIG_MAK
6645 FFMPEG_CONFIG_MAK=1
6646 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6647 prefix=$prefix
6648 LIBDIR=\$(DESTDIR)$libdir
6649 SHLIBDIR=\$(DESTDIR)$shlibdir
6650 INCDIR=\$(DESTDIR)$incdir
6651 BINDIR=\$(DESTDIR)$bindir
6652 DATADIR=\$(DESTDIR)$datadir
6653 DOCDIR=\$(DESTDIR)$docdir
6654 MANDIR=\$(DESTDIR)$mandir
6655 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6656 INSTALL_NAME_DIR=$install_name_dir
6657 SRC_PATH=$source_path
6658 SRC_LINK=$source_link
6659 ifndef MAIN_MAKEFILE
6660 SRC_PATH:=\$(SRC_PATH:.%=..%)
6661 endif
6662 CC_IDENT=$cc_ident
6663 ARCH=$arch
6664 INTRINSICS=$intrinsics
6665 CC=$cc
6666 CXX=$cxx
6667 AS=$as
6668 OBJCC=$objcc
6669 LD=$ld
6670 DEPCC=$dep_cc
6671 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6672 DEPAS=$as
6673 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6674 YASM=$yasmexe
6675 DEPYASM=$yasmexe
6676 AR=$ar
6677 ARFLAGS=$arflags
6678 AR_O=$ar_o
6679 RANLIB=$ranlib
6680 STRIP=$strip
6681 CP=cp -p
6682 LN_S=$ln_s
6683 CPPFLAGS=$CPPFLAGS
6684 CFLAGS=$CFLAGS
6685 CXXFLAGS=$CXXFLAGS
6686 OBJCFLAGS=$OBJCFLAGS
6687 ASFLAGS=$ASFLAGS
6688 AS_C=$AS_C
6689 AS_O=$AS_O
6690 OBJCC_C=$OBJCC_C
6691 OBJCC_E=$OBJCC_E
6692 OBJCC_O=$OBJCC_O
6693 CC_C=$CC_C
6694 CC_E=$CC_E
6695 CC_O=$CC_O
6696 CXX_C=$CXX_C
6697 CXX_O=$CXX_O
6698 LD_O=$LD_O
6699 LD_LIB=$LD_LIB
6700 LD_PATH=$LD_PATH
6701 DLLTOOL=$dlltool
6702 WINDRES=$windres
6703 DEPWINDRES=$dep_cc
6704 DOXYGEN=$doxygen
6705 LDFLAGS=$LDFLAGS
6706 LDEXEFLAGS=$LDEXEFLAGS
6707 LDLIBFLAGS=$LDLIBFLAGS
6708 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
6709 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
6710 YASMFLAGS=$YASMFLAGS
6711 BUILDSUF=$build_suffix
6712 PROGSSUF=$progs_suffix
6713 FULLNAME=$FULLNAME
6714 LIBPREF=$LIBPREF
6715 LIBSUF=$LIBSUF
6716 LIBNAME=$LIBNAME
6717 SLIBPREF=$SLIBPREF
6718 SLIBSUF=$SLIBSUF
6719 EXESUF=$EXESUF
6720 EXTRA_VERSION=$extra_version
6721 CCDEP=$CCDEP
6722 CXXDEP=$CXXDEP
6723 CCDEP_FLAGS=$CCDEP_FLAGS
6724 ASDEP=$ASDEP
6725 ASDEP_FLAGS=$ASDEP_FLAGS
6726 CC_DEPFLAGS=$CC_DEPFLAGS
6727 AS_DEPFLAGS=$AS_DEPFLAGS
6728 HOSTCC=$host_cc
6729 HOSTLD=$host_ld
6730 HOSTCFLAGS=$host_cflags
6731 HOSTCPPFLAGS=$host_cppflags
6732 HOSTEXESUF=$HOSTEXESUF
6733 HOSTLDFLAGS=$host_ldflags
6734 HOSTLIBS=$host_libs
6735 DEPHOSTCC=$host_cc
6736 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
6737 HOSTCCDEP=$HOSTCCDEP
6738 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
6739 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
6740 HOSTCC_C=$HOSTCC_C
6741 HOSTCC_O=$HOSTCC_O
6742 HOSTLD_O=$HOSTLD_O
6743 TARGET_EXEC=$target_exec $target_exec_args
6744 TARGET_PATH=$target_path
6745 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
6746 CFLAGS-ffplay=${sdl2_cflags}
6747 ZLIB=$($ldflags_filter -lz)
6748 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
6749 EXTRALIBS=$extralibs
6750 COMPAT_OBJS=$compat_objs
6751 EXEOBJS=$exeobjs
6752 INSTALL=$install
6753 LIBTARGET=${LIBTARGET}
6754 SLIBNAME=${SLIBNAME}
6755 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
6756 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
6757 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
6758 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
6759 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
6760 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
6761 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
6762 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
6763 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
6764 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
6765 NOREDZONE_FLAGS=$noredzone_flags
6766 EOF
6767
6768 get_version(){
6769     lcname=lib${1}
6770     name=$(toupper $lcname)
6771     file=$source_path/$lcname/version.h
6772     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
6773     enabled raise_major && eval ${name}_VERSION_MAJOR=$((${name}_VERSION_MAJOR+100))
6774     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
6775     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
6776     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
6777     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
6778 }
6779
6780 map 'get_version $v' $LIBRARY_LIST
6781
6782 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> config.mak' $LIBRARY_LIST
6783
6784 print_program_libs(){
6785     eval "program_libs=\$${1}_libs"
6786     eval echo "LIBS-${1}=${program_libs}" >> config.mak
6787 }
6788
6789 map 'print_program_libs $v' $PROGRAM_LIST
6790
6791 cat > $TMPH <<EOF
6792 /* Automatically generated by configure - do not modify! */
6793 #ifndef FFMPEG_CONFIG_H
6794 #define FFMPEG_CONFIG_H
6795 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
6796 #define FFMPEG_LICENSE "$(c_escape $license)"
6797 #define CONFIG_THIS_YEAR 2017
6798 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
6799 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
6800 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
6801 #define av_restrict $_restrict
6802 #define EXTERN_PREFIX "${extern_prefix}"
6803 #define EXTERN_ASM ${extern_prefix}
6804 #define BUILDSUF "$build_suffix"
6805 #define SLIBSUF "$SLIBSUF"
6806 #define HAVE_MMX2 HAVE_MMXEXT
6807 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
6808 EOF
6809
6810 test -n "$assert_level" &&
6811     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
6812
6813 test -n "$malloc_prefix" &&
6814     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
6815
6816 if enabled yasm; then
6817     append config_files $TMPASM
6818     printf '' >$TMPASM
6819 fi
6820
6821 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
6822
6823
6824 mkdir -p doc
6825 mkdir -p tests
6826 mkdir -p tests/api
6827 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
6828
6829 print_config ARCH_   "$config_files" $ARCH_LIST
6830 print_config HAVE_   "$config_files" $HAVE_LIST
6831 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
6832                                      $CONFIG_EXTRA      \
6833                                      $ALL_COMPONENTS    \
6834
6835 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
6836 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
6837
6838 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
6839 cp_if_changed $TMPH config.h
6840 touch .config
6841
6842 enabled yasm && cp_if_changed $TMPASM config.asm
6843
6844 cat > $TMPH <<EOF
6845 /* Generated by ffconf */
6846 #ifndef AVUTIL_AVCONFIG_H
6847 #define AVUTIL_AVCONFIG_H
6848 EOF
6849
6850 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
6851
6852 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
6853
6854 cp_if_changed $TMPH libavutil/avconfig.h
6855
6856 # generate the lists of enabled components
6857 print_enabled_components(){
6858     file=$1
6859     struct_name=$2
6860     name=$3
6861     shift 3
6862     echo "static const $struct_name *$name[] = {" > $TMPH
6863     for c in $*; do
6864         enabled $c && printf "    &ff_%s,\n" $c >> $TMPH
6865     done
6866     echo "    NULL };" >> $TMPH
6867     cp_if_changed $TMPH $file
6868 }
6869
6870 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
6871 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
6872
6873 if test -n "$WARNINGS"; then
6874     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
6875     enabled fatal_warnings && exit 1
6876 fi
6877
6878 # build pkg-config files
6879
6880 lib_version(){
6881     eval printf "\"lib${1}${build_suffix} >= \$LIB$(toupper ${1})_VERSION, \""
6882 }
6883
6884 pkgconfig_generate(){
6885     name=$1
6886     shortname=${name#lib}${build_suffix}
6887     comment=$2
6888     version=$3
6889     libs=$4
6890     requires=$(map 'lib_version $v' $(eval echo \$${name#lib}_deps))
6891     requires=${requires%, }
6892     enabled ${name#lib} || return 0
6893     mkdir -p $name
6894     cat <<EOF > $name/$name${build_suffix}.pc
6895 prefix=$prefix
6896 exec_prefix=\${prefix}
6897 libdir=$libdir
6898 includedir=$incdir
6899
6900 Name: $name
6901 Description: $comment
6902 Version: $version
6903 Requires: $(enabled shared || echo $requires)
6904 Requires.private: $(enabled shared && echo $requires)
6905 Conflicts:
6906 Libs: -L\${libdir} $(enabled rpath && echo "-Wl,-rpath,\${libdir}") -l${shortname} $(enabled shared || echo $libs)
6907 Libs.private: $(enabled shared && echo $libs)
6908 Cflags: -I\${includedir}
6909 EOF
6910
6911 mkdir -p doc/examples/pc-uninstalled
6912 includedir=${source_path}
6913 [ "$includedir" = . ] && includedir="\${pcfiledir}/../../.."
6914     cat <<EOF > doc/examples/pc-uninstalled/${name}-uninstalled.pc
6915 prefix=
6916 exec_prefix=
6917 libdir=\${pcfiledir}/../../../$name
6918 includedir=${includedir}
6919
6920 Name: $name
6921 Description: $comment
6922 Version: $version
6923 Requires: $requires
6924 Conflicts:
6925 Libs: -L\${libdir} -Wl,-rpath,\${libdir} -l${shortname} $(enabled shared || echo $libs)
6926 Cflags: -I\${includedir}
6927 EOF
6928 }
6929
6930 pkgconfig_generate libavutil     "FFmpeg utility library"               "$LIBAVUTIL_VERSION"     "$LIBRT $LIBM"
6931 pkgconfig_generate libavcodec    "FFmpeg codec library"                 "$LIBAVCODEC_VERSION"    "$extralibs"
6932 pkgconfig_generate libavformat   "FFmpeg container format library"      "$LIBAVFORMAT_VERSION"   "$extralibs"
6933 pkgconfig_generate libavdevice   "FFmpeg device handling library"       "$LIBAVDEVICE_VERSION"   "$extralibs"
6934 pkgconfig_generate libavfilter   "FFmpeg audio/video filtering library" "$LIBAVFILTER_VERSION"   "$extralibs"
6935 pkgconfig_generate libpostproc   "FFmpeg postprocessing library"        "$LIBPOSTPROC_VERSION"   ""
6936 pkgconfig_generate libavresample "Libav audio resampling library"       "$LIBAVRESAMPLE_VERSION" "$LIBM"
6937 pkgconfig_generate libswscale    "FFmpeg image rescaling library"       "$LIBSWSCALE_VERSION"    "$LIBM"
6938 pkgconfig_generate libswresample "FFmpeg audio resampling library"      "$LIBSWRESAMPLE_VERSION" "$LIBM $LIBSOXR"