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

   1 #!/bin/sh
   2 #
   3 # FFmpeg configure script
   4 #
   5 # Copyright (c) 2000-2002 Fabrice Bellard
   6 # Copyright (c) 2005-2008 Diego Biurrun
   7 # Copyright (c) 2005-2008 Mans Rullgard
   8 #
   9
  10 # Prevent locale nonsense from breaking basic text processing.
  11 LC_ALL=C
  12 export LC_ALL
  13
  14 # make sure we are running under a compatible shell
  15 # try to make this part work with most shells
  16
  17 try_exec(){
  18     echo "Trying shell $1"
  19     type "$1" > /dev/null 2>&1 && exec "$@"
  20 }
  21
  22 unset foo
  23 (: ${foo%%bar}) 2> /dev/null
  24 E1="$?"
  25
  26 (: ${foo?}) 2> /dev/null
  27 E2="$?"
  28
  29 if test "$E1" != 0 || test "$E2" = 0; then
  30     echo "Broken shell detected.  Trying alternatives."
  31     export FF_CONF_EXEC
  32     if test "0$FF_CONF_EXEC" -lt 1; then
  33         FF_CONF_EXEC=1
  34         try_exec bash "$0" "$@"
  35     fi
  36     if test "0$FF_CONF_EXEC" -lt 2; then
  37         FF_CONF_EXEC=2
  38         try_exec ksh "$0" "$@"
  39     fi
  40     if test "0$FF_CONF_EXEC" -lt 3; then
  41         FF_CONF_EXEC=3
  42         try_exec /usr/xpg4/bin/sh "$0" "$@"
  43     fi
  44     echo "No compatible shell script interpreter found."
  45     echo "This configure script requires a POSIX-compatible shell"
  46     echo "such as bash or ksh."
  47     echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
  48     echo "Instead, install a working POSIX-compatible shell."
  49     echo "Disabling this configure test will create a broken FFmpeg."
  50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
  51         echo "This bash version ($BASH_VERSION) is broken on your platform."
  52         echo "Upgrade to a later version if available."
  53     fi
  54     exit 1
  55 fi
  56
  57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
  58
  59 show_help(){
  60     cat <<EOF
  61 Usage: configure [options]
  62 Options: [defaults in brackets after descriptions]
  63
  64 Help options:
  65   --help                   print this message
  66   --list-decoders          show all available decoders
  67   --list-encoders          show all available encoders
  68   --list-hwaccels          show all available hardware accelerators
  69   --list-demuxers          show all available demuxers
  70   --list-muxers            show all available muxers
  71   --list-parsers           show all available parsers
  72   --list-protocols         show all available protocols
  73   --list-bsfs              show all available bitstream filters
  74   --list-indevs            show all available input devices
  75   --list-outdevs           show all available output devices
  76   --list-filters           show all available filters
  77
  78 Standard options:
  79   --logfile=FILE           log tests and output to FILE [config.log]
  80   --disable-logging        do not log configure debug information
  81   --fatal-warnings         fail if any configure warning is generated
  82   --prefix=PREFIX          install in PREFIX [$prefix]
  83   --bindir=DIR             install binaries in DIR [PREFIX/bin]
  84   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
  85   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
  86   --libdir=DIR             install libs in DIR [PREFIX/lib]
  87   --shlibdir=DIR           install shared libs in DIR [LIBDIR]
  88   --incdir=DIR             install includes in DIR [PREFIX/include]
  89   --mandir=DIR             install man page in DIR [PREFIX/share/man]
  90   --pkgconfigdir=DIR       install pkg-config files in DIR [LIBDIR/pkgconfig]
  91   --enable-rpath           use rpath to allow installing libraries in paths
  92                            not part of the dynamic linker search path
  93                            use rpath when linking programs [USE WITH CARE]
  94   --install-name-dir=DIR   Darwin directory name for installed targets
  95
  96 Licensing options:
  97   --enable-gpl             allow use of GPL code, the resulting libs
  98                            and binaries will be under GPL [no]
  99   --enable-version3        upgrade (L)GPL to version 3 [no]
 100   --enable-nonfree         allow use of nonfree code, the resulting libs
 101                            and binaries will be unredistributable [no]
 102
 103 Configuration options:
 104   --disable-static         do not build static libraries [no]
 105   --enable-shared          build shared libraries [no]
 106   --enable-small           optimize for size instead of speed
 107   --disable-runtime-cpudetect disable detecting cpu capabilities at runtime (smaller binary)
 108   --enable-gray            enable full grayscale support (slower color)
 109   --disable-swscale-alpha  disable alpha channel support in swscale
 110   --disable-all            disable building components, libraries and programs
 111   --enable-raise-major     increase major version numbers in sonames [no]
 112
 113 Program options:
 114   --disable-programs       do not build command line programs
 115   --disable-ffmpeg         disable ffmpeg build
 116   --disable-ffplay         disable ffplay build
 117   --disable-ffprobe        disable ffprobe build
 118   --disable-ffserver       disable ffserver build
 119
 120 Documentation options:
 121   --disable-doc            do not build documentation
 122   --disable-htmlpages      do not build HTML documentation pages
 123   --disable-manpages       do not build man documentation pages
 124   --disable-podpages       do not build POD documentation pages
 125   --disable-txtpages       do not build text documentation pages
 126
 127 Component options:
 128   --disable-avdevice       disable libavdevice build
 129   --disable-avcodec        disable libavcodec build
 130   --disable-avformat       disable libavformat build
 131   --disable-swresample     disable libswresample build
 132   --disable-swscale        disable libswscale build
 133   --disable-postproc       disable libpostproc build
 134   --disable-avfilter       disable libavfilter build
 135   --enable-avresample      enable libavresample build [no]
 136   --disable-pthreads       disable pthreads [autodetect]
 137   --disable-w32threads     disable Win32 threads [autodetect]
 138   --disable-os2threads     disable OS/2 threads [autodetect]
 139   --disable-network        disable network support [no]
 140   --disable-dct            disable DCT code
 141   --disable-dwt            disable DWT code
 142   --disable-error-resilience disable error resilience code
 143   --disable-lsp            disable LSP code
 144   --disable-lzo            disable LZO decoder code
 145   --disable-mdct           disable MDCT code
 146   --disable-rdft           disable RDFT code
 147   --disable-fft            disable FFT code
 148   --disable-faan           disable floating point AAN (I)DCT code
 149   --disable-pixelutils     disable pixel utils in libavutil
 150
 151 Individual component options:
 152   --disable-everything     disable all components listed below
 153   --disable-encoder=NAME   disable encoder NAME
 154   --enable-encoder=NAME    enable encoder NAME
 155   --disable-encoders       disable all encoders
 156   --disable-decoder=NAME   disable decoder NAME
 157   --enable-decoder=NAME    enable decoder NAME
 158   --disable-decoders       disable all decoders
 159   --disable-hwaccel=NAME   disable hwaccel NAME
 160   --enable-hwaccel=NAME    enable hwaccel NAME
 161   --disable-hwaccels       disable all hwaccels
 162   --disable-muxer=NAME     disable muxer NAME
 163   --enable-muxer=NAME      enable muxer NAME
 164   --disable-muxers         disable all muxers
 165   --disable-demuxer=NAME   disable demuxer NAME
 166   --enable-demuxer=NAME    enable demuxer NAME
 167   --disable-demuxers       disable all demuxers
 168   --enable-parser=NAME     enable parser NAME
 169   --disable-parser=NAME    disable parser NAME
 170   --disable-parsers        disable all parsers
 171   --enable-bsf=NAME        enable bitstream filter NAME
 172   --disable-bsf=NAME       disable bitstream filter NAME
 173   --disable-bsfs           disable all bitstream filters
 174   --enable-protocol=NAME   enable protocol NAME
 175   --disable-protocol=NAME  disable protocol NAME
 176   --disable-protocols      disable all protocols
 177   --enable-indev=NAME      enable input device NAME
 178   --disable-indev=NAME     disable input device NAME
 179   --disable-indevs         disable input devices
 180   --enable-outdev=NAME     enable output device NAME
 181   --disable-outdev=NAME    disable output device NAME
 182   --disable-outdevs        disable output devices
 183   --disable-devices        disable all devices
 184   --enable-filter=NAME     enable filter NAME
 185   --disable-filter=NAME    disable filter NAME
 186   --disable-filters        disable all filters
 187
 188 External library support:
 189
 190   Using any of the following switches will allow FFmpeg to link to the
 191   corresponding external library. All the components depending on that library
 192   will become enabled, if all their other dependencies are met and they are not
 193   explicitly disabled. E.g. --enable-libwavpack will enable linking to
 194   libwavpack and allow the libwavpack encoder to be built, unless it is
 195   specifically disabled with --disable-encoder=libwavpack.
 196
 197   Note that only the system libraries are auto-detected. All the other external
 198   libraries must be explicitly enabled.
 199
 200   Also note that the following help text describes the purpose of the libraries
 201   themselves, not all their features will necessarily be usable by FFmpeg.
 202
 203   --enable-avisynth        enable reading of AviSynth script files [no]
 204   --disable-bzlib          disable bzlib [autodetect]
 205   --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
 206   --enable-frei0r          enable frei0r video filtering [no]
 207   --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
 208                            if openssl, librtmp or gmp is not used [no]
 209   --enable-gmp             enable gmp, needed for rtmp(t)e support
 210                            if openssl or librtmp is not used [no]
 211   --enable-gnutls          enable gnutls, needed for https support
 212                            if openssl is not used [no]
 213   --disable-iconv          disable iconv [autodetect]
 214   --enable-jni             enable JNI support [no]
 215   --enable-ladspa          enable LADSPA audio filtering [no]
 216   --enable-libass          enable libass subtitles rendering,
 217                            needed for subtitles and ass filter [no]
 218   --enable-libbluray       enable BluRay reading using libbluray [no]
 219   --enable-libbs2b         enable bs2b DSP library [no]
 220   --enable-libcaca         enable textual display using libcaca [no]
 221   --enable-libcelt         enable CELT decoding via libcelt [no]
 222   --enable-libcdio         enable audio CD grabbing with libcdio [no]
 223   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 224                            and libraw1394 [no]
 225   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 226   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 227   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
 228   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
 229   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
 230   --enable-libgme          enable Game Music Emu via libgme [no]
 231   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 232   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 233   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 234   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
 235   --enable-libmodplug      enable ModPlug via libmodplug [no]
 236   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 237   --enable-libnut          enable NUT (de)muxing via libnut,
 238                            native (de)muxer exists [no]
 239   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 240   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 241   --enable-libopencv       enable video filtering via libopencv [no]
 242   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 243   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 244   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
 245   --enable-libopus         enable Opus de/encoding via libopus [no]
 246   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 247   --enable-librubberband   enable rubberband needed for rubberband filter [no]
 248   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 249   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
 250   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 251   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 252   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
 253   --enable-libsoxr         enable Include libsoxr resampling [no]
 254   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 255   --enable-libssh          enable SFTP protocol via libssh [no]
 256   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
 257   --enable-libtheora       enable Theora encoding via libtheora [no]
 258   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 259   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 260   --enable-libvidstab      enable video stabilization using vid.stab [no]
 261   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 262   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 263                            native implementation exists [no]
 264   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 265   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 266   --enable-libwebp         enable WebP encoding via libwebp [no]
 267   --enable-libx264         enable H.264 encoding via x264 [no]
 268   --enable-libx265         enable HEVC encoding via x265 [no]
 269   --enable-libxavs         enable AVS encoding via xavs [no]
 270   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
 271   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
 272   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
 273   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
 274   --enable-libxvid         enable Xvid encoding via xvidcore,
 275                            native MPEG-4/Xvid encoder exists [no]
 276   --enable-libzimg         enable z.lib, needed for zscale filter [no]
 277   --enable-libzmq          enable message passing via libzmq [no]
 278   --enable-libzvbi         enable teletext support via libzvbi [no]
 279   --disable-lzma           disable lzma [autodetect]
 280   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
 281   --enable-mediacodec      enable Android MediaCodec support [no]
 282   --enable-netcdf          enable NetCDF, needed for sofalizer filter [no]
 283   --enable-openal          enable OpenAL 1.1 capture support [no]
 284   --enable-opencl          enable OpenCL code
 285   --enable-opengl          enable OpenGL rendering [no]
 286   --enable-openssl         enable openssl, needed for https support
 287                            if gnutls is not used [no]
 288   --disable-schannel       disable SChannel SSP, needed for TLS support on
 289                            Windows if openssl and gnutls are not used [autodetect]
 290   --disable-sdl2           disable sdl2 [autodetect]
 291   --disable-securetransport disable Secure Transport, needed for TLS support
 292                            on OSX if openssl and gnutls are not used [autodetect]
 293   --disable-xlib           disable xlib [autodetect]
 294   --disable-zlib           disable zlib [autodetect]
 295
 296   The following libraries provide various hardware acceleration features:
 297   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
 298   --disable-cuda           disable dynamically linked Nvidia CUDA code [autodetect]
 299   --disable-cuvid          disable Nvidia CUVID support [autodetect]
 300   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
 301   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
 302   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
 303   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
 304   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
 305   --disable-nvenc          disable Nvidia video encoding code [autodetect]
 306   --enable-omx             enable OpenMAX IL code [no]
 307   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
 308   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
 309   --disable-vda            disable Apple Video Decode Acceleration code [autodetect]
 310   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
 311   --disable-videotoolbox   disable VideoToolbox code [autodetect]
 312
 313 Toolchain options:
 314   --arch=ARCH              select architecture [$arch]
 315   --cpu=CPU                select the minimum required CPU (affects
 316                            instruction selection, may crash on older CPUs)
 317   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 318   --progs-suffix=SUFFIX    program name suffix []
 319   --enable-cross-compile   assume a cross-compiler is used
 320   --sysroot=PATH           root of cross-build tree
 321   --sysinclude=PATH        location of cross-build system headers
 322   --target-os=OS           compiler targets OS [$target_os]
 323   --target-exec=CMD        command to run executables on target
 324   --target-path=DIR        path to view of build directory on target
 325   --target-samples=DIR     path to samples directory on target
 326   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 327   --toolchain=NAME         set tool defaults according to NAME
 328   --nm=NM                  use nm tool NM [$nm_default]
 329   --ar=AR                  use archive tool AR [$ar_default]
 330   --as=AS                  use assembler AS [$as_default]
 331   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
 332   --strip=STRIP            use strip tool STRIP [$strip_default]
 333   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 334   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
 335   --cc=CC                  use C compiler CC [$cc_default]
 336   --cxx=CXX                use C compiler CXX [$cxx_default]
 337   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 338   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 339   --ld=LD                  use linker LD [$ld_default]
 340   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 341   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 342   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 343   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 344   --host-cc=HOSTCC         use host C compiler HOSTCC
 345   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 346   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 347   --host-ld=HOSTLD         use host linker HOSTLD
 348   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 349   --host-libs=HLIBS        use libs HLIBS when linking for host
 350   --host-os=OS             compiler host OS [$target_os]
 351   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 352   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 353   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 354   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 355   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 356   --extra-ldlibflags=ELDFLAGS add ELDFLAGS to LDLIBFLAGS [$LDLIBFLAGS]
 357   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 358   --extra-version=STRING   version string suffix []
 359   --optflags=OPTFLAGS      override optimization-related compiler flags
 360   --build-suffix=SUFFIX    library name suffix []
 361   --enable-pic             build position-independent code
 362   --enable-thumb           compile for Thumb instruction set
 363   --enable-lto             use link-time optimization
 364   --env="ENV=override"     override the environment variables
 365
 366 Advanced options (experts only):
 367   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 368   --custom-allocator=NAME  use a supported custom allocator
 369   --disable-symver         disable symbol versioning
 370   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 371   --disable-safe-bitstream-reader
 372                            disable buffer boundary checking in bitreaders
 373                            (faster, but may crash)
 374   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 375
 376 Optimization options (experts only):
 377   --disable-asm            disable all assembly optimizations
 378   --disable-altivec        disable AltiVec optimizations
 379   --disable-vsx            disable VSX optimizations
 380   --disable-power8         disable POWER8 optimizations
 381   --disable-amd3dnow       disable 3DNow! optimizations
 382   --disable-amd3dnowext    disable 3DNow! extended optimizations
 383   --disable-mmx            disable MMX optimizations
 384   --disable-mmxext         disable MMXEXT optimizations
 385   --disable-sse            disable SSE optimizations
 386   --disable-sse2           disable SSE2 optimizations
 387   --disable-sse3           disable SSE3 optimizations
 388   --disable-ssse3          disable SSSE3 optimizations
 389   --disable-sse4           disable SSE4 optimizations
 390   --disable-sse42          disable SSE4.2 optimizations
 391   --disable-avx            disable AVX optimizations
 392   --disable-xop            disable XOP optimizations
 393   --disable-fma3           disable FMA3 optimizations
 394   --disable-fma4           disable FMA4 optimizations
 395   --disable-avx2           disable AVX2 optimizations
 396   --disable-aesni          disable AESNI optimizations
 397   --disable-armv5te        disable armv5te optimizations
 398   --disable-armv6          disable armv6 optimizations
 399   --disable-armv6t2        disable armv6t2 optimizations
 400   --disable-vfp            disable VFP optimizations
 401   --disable-neon           disable NEON optimizations
 402   --disable-inline-asm     disable use of inline assembly
 403   --disable-yasm           disable use of nasm/yasm assembly
 404   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
 405   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 406   --disable-msa            disable MSA optimizations
 407   --disable-mipsfpu        disable floating point MIPS optimizations
 408   --disable-mmi            disable Loongson SIMD optimizations
 409   --disable-fast-unaligned consider unaligned accesses slow
 410
 411 Developer options (useful when working on FFmpeg itself):
 412   --disable-debug          disable debugging symbols
 413   --enable-debug=LEVEL     set the debug level [$debuglevel]
 414   --disable-optimizations  disable compiler optimizations
 415   --enable-extra-warnings  enable more compiler warnings
 416   --disable-stripping      disable stripping of executables and shared libraries
 417   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 418                            2 causes a slowdown at runtime.
 419   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 420   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 421                            leaks and errors, using the specified valgrind binary.
 422                            Cannot be combined with --target-exec
 423   --enable-ftrapv          Trap arithmetic overflows
 424   --samples=PATH           location of test samples for FATE, if not set use
 425                            \$FATE_SAMPLES at make invocation time.
 426   --enable-neon-clobber-test check NEON registers for clobbering (should be
 427                            used only for debugging purposes)
 428   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 429                            should be used only for debugging purposes)
 430   --enable-random          randomly enable/disable components
 431   --disable-random
 432   --enable-random=LIST     randomly enable/disable specific components or
 433   --disable-random=LIST    component groups. LIST is a comma-separated list
 434                            of NAME[:PROB] entries where NAME is a component
 435                            (group) and PROB the probability associated with
 436                            NAME (default 0.5).
 437   --random-seed=VALUE      seed value for --enable/disable-random
 438   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 439                            (only applies to --disable-optimizations builds)
 440
 441 NOTE: Object files are built at the place where configure is launched.
 442 EOF
 443   exit 0
 444 }
 445
 446 quotes='""'
 447 if test -t 1 && which tput >/dev/null 2>&1; then
 448     ncolors=$(tput colors)
 449     if test -n "$ncolors" && test $ncolors -ge 8; then
 450         bold_color=$(tput bold)
 451         warn_color=$(tput setaf 3)
 452         error_color=$(tput setaf 1)
 453         reset_color=$(tput sgr0)
 454     fi
 455     # 72 used instead of 80 since that's the default of pr
 456     ncols=$(tput cols)
 457 fi
 458 : ${ncols:=72}
 459
 460 log(){
 461     echo "$@" >> $logfile
 462 }
 463
 464 log_file(){
 465     log BEGIN $1
 466     pr -n -t $1 >> $logfile
 467     log END $1
 468 }
 469
 470 warn(){
 471     log "WARNING: $*"
 472     WARNINGS="${WARNINGS}WARNING: $*\n"
 473 }
 474
 475 die(){
 476     log "$@"
 477     echo "$error_color$bold_color$@$reset_color"
 478     cat <<EOF
 479
 480 If you think configure made a mistake, make sure you are using the latest
 481 version from Git.  If the latest version fails, report the problem to the
 482 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 483 EOF
 484     if disabled logging; then
 485         cat <<EOF
 486 Rerun configure with logging enabled (do not use --disable-logging), and
 487 include the log this produces with your report.
 488 EOF
 489     else
 490         cat <<EOF
 491 Include the log file "$logfile" produced by configure as this will help
 492 solve the problem.
 493 EOF
 494     fi
 495     exit 1
 496 }
 497
 498 # Avoid locale weirdness, besides we really just want to translate ASCII.
 499 toupper(){
 500     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 501 }
 502
 503 tolower(){
 504     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 505 }
 506
 507 c_escape(){
 508     echo "$*" | sed 's/["\\]/\\\0/g'
 509 }
 510
 511 sh_quote(){
 512     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 513     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 514     echo "$v"
 515 }
 516
 517 cleanws(){
 518     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 519 }
 520
 521 filter(){
 522     pat=$1
 523     shift
 524     for v; do
 525         eval "case $v in $pat) echo $v ;; esac"
 526     done
 527 }
 528
 529 filter_out(){
 530     pat=$1
 531     shift
 532     for v; do
 533         eval "case $v in $pat) ;; *) echo $v ;; esac"
 534     done
 535 }
 536
 537 map(){
 538     m=$1
 539     shift
 540     for v; do eval $m; done
 541 }
 542
 543 add_suffix(){
 544     suffix=$1
 545     shift
 546     for v; do echo ${v}${suffix}; done
 547 }
 548
 549 set_all(){
 550     value=$1
 551     shift
 552     for var in $*; do
 553         eval $var=$value
 554     done
 555 }
 556
 557 set_weak(){
 558     value=$1
 559     shift
 560     for var; do
 561         eval : \${$var:=$value}
 562     done
 563 }
 564
 565 sanitize_var_name(){
 566     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 567 }
 568
 569 set_safe(){
 570     var=$1
 571     shift
 572     eval $(sanitize_var_name "$var")='$*'
 573 }
 574
 575 get_safe(){
 576     eval echo \$$(sanitize_var_name "$1")
 577 }
 578
 579 pushvar(){
 580     for pvar in $*; do
 581         eval level=\${${pvar}_level:=0}
 582         eval ${pvar}_${level}="\$$pvar"
 583         eval ${pvar}_level=$(($level+1))
 584     done
 585 }
 586
 587 popvar(){
 588     for pvar in $*; do
 589         eval level=\${${pvar}_level:-0}
 590         test $level = 0 && continue
 591         eval level=$(($level-1))
 592         eval $pvar="\${${pvar}_${level}}"
 593         eval ${pvar}_level=$level
 594         eval unset ${pvar}_${level}
 595     done
 596 }
 597
 598 request(){
 599     for var in $*; do
 600         eval ${var}_requested=yes
 601         eval $var=
 602     done
 603 }
 604
 605 enable(){
 606     set_all yes $*
 607 }
 608
 609 disable(){
 610     set_all no $*
 611 }
 612
 613 enable_weak(){
 614     set_weak yes $*
 615 }
 616
 617 disable_weak(){
 618     set_weak no $*
 619 }
 620
 621 enable_safe(){
 622     for var; do
 623         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 624     done
 625 }
 626
 627 disable_safe(){
 628     for var; do
 629         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 630     done
 631 }
 632
 633 do_enable_deep(){
 634     for var; do
 635         enabled $var && continue
 636         eval sel="\$${var}_select"
 637         eval sgs="\$${var}_suggest"
 638         pushvar var sgs
 639         enable_deep $sel
 640         popvar sgs
 641         enable_deep_weak $sgs
 642         popvar var
 643     done
 644 }
 645
 646 enable_deep(){
 647     do_enable_deep $*
 648     enable $*
 649 }
 650
 651 enable_deep_weak(){
 652     for var; do
 653         disabled $var && continue
 654         pushvar var
 655         do_enable_deep $var
 656         popvar var
 657         enable_weak $var
 658     done
 659 }
 660
 661 requested(){
 662     test "${1#!}" = "$1" && op='=' || op=!=
 663     eval test "x\$${1#!}_requested" $op "xyes"
 664 }
 665
 666 enabled(){
 667     test "${1#!}" = "$1" && op='=' || op=!=
 668     eval test "x\$${1#!}" $op "xyes"
 669 }
 670
 671 disabled(){
 672     test "${1#!}" = "$1" && op='=' || op=!=
 673     eval test "x\$${1#!}" $op "xno"
 674 }
 675
 676 enabled_all(){
 677     for opt; do
 678         enabled $opt || return 1
 679     done
 680 }
 681
 682 disabled_all(){
 683     for opt; do
 684         disabled $opt || return 1
 685     done
 686 }
 687
 688 enabled_any(){
 689     for opt; do
 690         enabled $opt && return 0
 691     done
 692 }
 693
 694 disabled_any(){
 695     for opt; do
 696         disabled $opt && return 0
 697     done
 698     return 1
 699 }
 700
 701 set_default(){
 702     for opt; do
 703         eval : \${$opt:=\$${opt}_default}
 704     done
 705 }
 706
 707 is_in(){
 708     value=$1
 709     shift
 710     for var in $*; do
 711         [ $var = $value ] && return 0
 712     done
 713     return 1
 714 }
 715
 716 do_check_deps(){
 717     for cfg; do
 718         cfg="${cfg#!}"
 719         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 720         disabled ${cfg}_checking && continue
 721         enable ${cfg}_checking
 722         append allopts $cfg
 723
 724         eval dep_all="\$${cfg}_deps"
 725         eval dep_any="\$${cfg}_deps_any"
 726         eval dep_sel="\$${cfg}_select"
 727         eval dep_sgs="\$${cfg}_suggest"
 728         eval dep_ifa="\$${cfg}_if"
 729         eval dep_ifn="\$${cfg}_if_any"
 730
 731         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 732         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
 733         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 734
 735         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 736         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 737         enabled_all  $dep_all || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not all dependencies are satisfied: $dep_all"; }
 738         enabled_any  $dep_any || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not any dependency is satisfied: $dep_any"; }
 739         disabled_any $dep_sel && { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some selected dependency is unsatisfied: $dep_sel"; }
 740
 741         if enabled $cfg; then
 742             enable_deep $dep_sel
 743             enable_deep_weak $dep_sgs
 744         fi
 745
 746         disable ${cfg}_checking
 747     done
 748 }
 749
 750 check_deps(){
 751     unset allopts
 752
 753     do_check_deps "$@"
 754
 755     for cfg in $allopts; do
 756         enabled $cfg || continue
 757         eval dep_extralibs="\$${cfg}_extralibs"
 758         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
 759     done
 760 }
 761
 762 print_config(){
 763     pfx=$1
 764     files=$2
 765     shift 2
 766     map 'eval echo "$v \${$v:-no}"' "$@" |
 767     awk "BEGIN { split(\"$files\", files) }
 768         {
 769             c = \"$pfx\" toupper(\$1);
 770             v = \$2;
 771             sub(/yes/, 1, v);
 772             sub(/no/,  0, v);
 773             for (f in files) {
 774                 file = files[f];
 775                 if (file ~ /\\.h\$/) {
 776                     printf(\"#define %s %d\\n\", c, v) >>file;
 777                 } else if (file ~ /\\.asm\$/) {
 778                     printf(\"%%define %s %d\\n\", c, v) >>file;
 779                 } else if (file ~ /\\.mak\$/) {
 780                     n = -v ? \"\" : \"!\";
 781                     printf(\"%s%s=yes\\n\", n, c) >>file;
 782                 } else if (file ~ /\\.texi\$/) {
 783                     pre = -v ? \"\" : \"@c \";
 784                     yesno = \$2;
 785                     c2 = tolower(c);
 786                     gsub(/_/, \"-\", c2);
 787                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 788                 }
 789             }
 790         }"
 791 }
 792
 793 print_enabled(){
 794     suf=$1
 795     shift
 796     for v; do
 797         enabled $v && printf "%s\n" ${v%$suf}
 798     done
 799 }
 800
 801 append(){
 802     var=$1
 803     shift
 804     eval "$var=\"\$$var $*\""
 805 }
 806
 807 prepend(){
 808     var=$1
 809     shift
 810     eval "$var=\"$* \$$var\""
 811 }
 812
 813 unique(){
 814     var=$1
 815     uniq_list=""
 816     for tok in $(eval echo \$$var); do
 817         uniq_list="$(filter_out $tok $uniq_list) $tok"
 818     done
 819     eval "$var=\"${uniq_list}\""
 820 }
 821
 822 add_cppflags(){
 823     append CPPFLAGS "$@"
 824 }
 825
 826 add_cflags(){
 827     append CFLAGS $($cflags_filter "$@")
 828 }
 829
 830 add_cxxflags(){
 831     append CXXFLAGS $($cflags_filter "$@")
 832 }
 833
 834 add_asflags(){
 835     append ASFLAGS $($asflags_filter "$@")
 836 }
 837
 838 add_objcflags(){
 839     append OBJCFLAGS $($objcflags_filter "$@")
 840 }
 841
 842 add_ldflags(){
 843     append LDFLAGS $($ldflags_filter "$@")
 844 }
 845
 846 add_ldexeflags(){
 847     append LDEXEFLAGS $($ldflags_filter "$@")
 848 }
 849
 850 add_ldlibflags(){
 851     append LDLIBFLAGS $($ldflags_filter "$@")
 852 }
 853
 854 add_stripflags(){
 855     append ASMSTRIPFLAGS "$@"
 856 }
 857
 858 add_extralibs(){
 859     prepend extralibs $($ldflags_filter "$@")
 860 }
 861
 862 add_host_cppflags(){
 863     append host_cppflags "$@"
 864 }
 865
 866 add_host_cflags(){
 867     append host_cflags $($host_cflags_filter "$@")
 868 }
 869
 870 add_host_ldflags(){
 871     append host_ldflags $($host_ldflags_filter "$@")
 872 }
 873
 874 add_compat(){
 875     append compat_objs $1
 876     shift
 877     map 'add_cppflags -D$v' "$@"
 878 }
 879
 880 check_cmd(){
 881     log "$@"
 882     "$@" >> $logfile 2>&1
 883 }
 884
 885 check_stat(){
 886     log check_stat "$@"
 887     stat "$1" >> $logfile 2>&1
 888 }
 889
 890 cc_o(){
 891     eval printf '%s\\n' $CC_O
 892 }
 893
 894 cc_e(){
 895     eval printf '%s\\n' $CC_E
 896 }
 897
 898 check_cc(){
 899     log check_cc "$@"
 900     cat > $TMPC
 901     log_file $TMPC
 902     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 903 }
 904
 905 check_cxx(){
 906     log check_cxx "$@"
 907     cat > $TMPCPP
 908     log_file $TMPCPP
 909     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 910 }
 911
 912 check_objcc(){
 913     log check_objcc "$@"
 914     cat > $TMPM
 915     log_file $TMPM
 916     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
 917 }
 918
 919 check_cpp(){
 920     log check_cpp "$@"
 921     cat > $TMPC
 922     log_file $TMPC
 923     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 924 }
 925
 926 as_o(){
 927     eval printf '%s\\n' $AS_O
 928 }
 929
 930 check_as(){
 931     log check_as "$@"
 932     cat > $TMPS
 933     log_file $TMPS
 934     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 935 }
 936
 937 check_inline_asm(){
 938     log check_inline_asm "$@"
 939     name="$1"
 940     code="$2"
 941     shift 2
 942     disable $name
 943     check_cc "$@" <<EOF && enable $name
 944 void foo(void){ __asm__ volatile($code); }
 945 EOF
 946 }
 947
 948 check_inline_asm_flags(){
 949     log check_inline_asm_flags "$@"
 950     name="$1"
 951     code="$2"
 952     flags=''
 953     shift 2
 954     while [ "$1" != "" ]; do
 955       append flags $1
 956       shift
 957     done;
 958     disable $name
 959     cat > $TMPC <<EOF
 960 void foo(void){ __asm__ volatile($code); }
 961 EOF
 962     log_file $TMPC
 963     check_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
 964     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
 965 }
 966
 967 check_insn(){
 968     log check_insn "$@"
 969     check_inline_asm ${1}_inline "\"$2\""
 970     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 971 }
 972
 973 check_yasm(){
 974     log check_yasm "$@"
 975     echo "$1" > $TMPS
 976     log_file $TMPS
 977     shift 1
 978     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
 979 }
 980
 981 ld_o(){
 982     eval printf '%s\\n' $LD_O
 983 }
 984
 985 check_ld(){
 986     log check_ld "$@"
 987     type=$1
 988     shift 1
 989     flags=$(filter_out '-l*|*.so' $@)
 990     libs=$(filter '-l*|*.so' $@)
 991     check_$type $($cflags_filter $flags) || return
 992     flags=$($ldflags_filter $flags)
 993     libs=$($ldflags_filter $libs)
 994     check_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
 995 }
 996
 997 print_include(){
 998     hdr=$1
 999     test "${hdr%.h}" = "${hdr}" &&
1000         echo "#include $hdr"    ||
1001         echo "#include <$hdr>"
1002 }
1003
1004 check_code(){
1005     log check_code "$@"
1006     check=$1
1007     headers=$2
1008     code=$3
1009     shift 3
1010     {
1011         for hdr in $headers; do
1012             print_include $hdr
1013         done
1014         echo "int main(void) { $code; return 0; }"
1015     } | check_$check "$@"
1016 }
1017
1018 check_cppflags(){
1019     log check_cppflags "$@"
1020     check_cc "$@" <<EOF && append CPPFLAGS "$@"
1021 int x;
1022 EOF
1023 }
1024
1025 test_cflags(){
1026     log test_cflags "$@"
1027     set -- $($cflags_filter "$@")
1028     check_cc "$@" <<EOF
1029 int x;
1030 EOF
1031 }
1032
1033 check_cflags(){
1034     log check_cflags "$@"
1035     test_cflags "$@" && add_cflags "$@"
1036 }
1037
1038 check_cxxflags(){
1039     log check_cxxflags "$@"
1040     set -- $($cflags_filter "$@")
1041     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
1042 int x;
1043 EOF
1044 }
1045
1046 test_objcflags(){
1047     log test_cflags "$@"
1048     set -- $($cflags_filter "$@")
1049     check_objcc "$@" <<EOF
1050 int x;
1051 EOF
1052 }
1053
1054 check_objcflags(){
1055     log check_cflags "$@"
1056     test_objcflags "$@" && add_objcflags "$@"
1057 }
1058
1059 test_ldflags(){
1060     log test_ldflags "$@"
1061     check_ld "cc" "$@" <<EOF
1062 int main(void){ return 0; }
1063 EOF
1064 }
1065
1066 check_ldflags(){
1067     log check_ldflags "$@"
1068     test_ldflags "$@" && add_ldflags "$@"
1069 }
1070
1071 test_stripflags(){
1072     log test_stripflags "$@"
1073     # call check_cc to get a fresh TMPO
1074     check_cc <<EOF
1075 int main(void) { return 0; }
1076 EOF
1077     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1078 }
1079
1080 check_stripflags(){
1081     log check_stripflags "$@"
1082     test_stripflags "$@" && add_stripflags "$@"
1083 }
1084
1085 check_header(){
1086     log check_header "$@"
1087     header=$1
1088     shift
1089     disable_safe $header
1090     check_cpp "$@" <<EOF && enable_safe $header
1091 #include <$header>
1092 int x;
1093 EOF
1094 }
1095
1096 check_header_objcc(){
1097     log check_header_objcc "$@"
1098     rm -f -- "$TMPO"
1099     header=$1
1100     shift
1101     disable_safe $header
1102     {
1103        echo "#include <$header>"
1104        echo "int main(void) { return 0; }"
1105     } | check_objcc && check_stat "$TMPO" && enable_safe $headers
1106 }
1107
1108 check_func(){
1109     log check_func "$@"
1110     func=$1
1111     shift
1112     disable $func
1113     check_ld "cc" "$@" <<EOF && enable $func
1114 extern int $func();
1115 int main(void){ $func(); }
1116 EOF
1117 }
1118
1119 check_complexfunc(){
1120     log check_complexfunc "$@"
1121     func=$1
1122     narg=$2
1123     shift 2
1124     test $narg = 2 && args="f, g" || args="f * I"
1125     disable $func
1126     check_ld "cc" "$@" <<EOF && enable $func
1127 #include <complex.h>
1128 #include <math.h>
1129 float foo(complex float f, complex float g) { return $func($args); }
1130 int main(void){ return (int) foo; }
1131 EOF
1132 }
1133
1134 check_mathfunc(){
1135     log check_mathfunc "$@"
1136     func=$1
1137     narg=$2
1138     shift 2
1139     test $narg = 2 && args="f, g" || args="f"
1140     disable $func
1141     check_ld "cc" "$@" <<EOF && enable $func
1142 #include <math.h>
1143 float foo(float f, float g) { return $func($args); }
1144 int main(void){ return (int) foo; }
1145 EOF
1146 }
1147
1148 check_func_headers(){
1149     log check_func_headers "$@"
1150     headers=$1
1151     funcs=$2
1152     shift 2
1153     {
1154         for hdr in $headers; do
1155             print_include $hdr
1156         done
1157         echo "#include <stdint.h>"
1158         for func in $funcs; do
1159             echo "long check_$func(void) { return (long) $func; }"
1160         done
1161         echo "int main(void) { int ret = 0;"
1162         # LTO could optimize out the test functions without this
1163         for func in $funcs; do
1164             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1165         done
1166         echo "return ret; }"
1167     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1168 }
1169
1170 check_class_headers_cpp(){
1171     log check_class_headers_cpp "$@"
1172     headers=$1
1173     classes=$2
1174     shift 2
1175     {
1176         for hdr in $headers; do
1177             echo "#include <$hdr>"
1178         done
1179         echo "int main(void) { "
1180         i=1
1181         for class in $classes; do
1182             echo "$class obj$i;"
1183             i=$(expr $i + 1)
1184         done
1185         echo "return 0; }"
1186     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1187 }
1188
1189 check_cpp_condition(){
1190     log check_cpp_condition "$@"
1191     header=$1
1192     condition=$2
1193     shift 2
1194     check_cpp "$@" <<EOF
1195 #include <$header>
1196 #if !($condition)
1197 #error "unsatisfied condition: $condition"
1198 #endif
1199 EOF
1200 }
1201
1202 test_cflags_cc(){
1203     log test_cflags_cc "$@"
1204     flags=$1
1205     header=$2
1206     condition=$3
1207     shift 3
1208     set -- $($cflags_filter "$flags")
1209     check_cc "$@" <<EOF
1210 #include <$header>
1211 #if !($condition)
1212 #error "unsatisfied condition: $condition"
1213 #endif
1214 EOF
1215 }
1216
1217 check_lib(){
1218     log check_lib "$@"
1219     headers="$1"
1220     funcs="$2"
1221     shift 2
1222     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1223 }
1224
1225 check_lib_cpp(){
1226     log check_lib_cpp "$@"
1227     headers="$1"
1228     classes="$2"
1229     shift 2
1230     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1231 }
1232
1233 check_pkg_config(){
1234     log check_pkg_config "$@"
1235     pkgandversion="$1"
1236     pkg="${1%% *}"
1237     headers="$2"
1238     funcs="$3"
1239     shift 3
1240     check_cmd $pkg_config --exists --print-errors $pkgandversion || return
1241     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1242     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1243     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1244         set_safe "${pkg}_cflags" $pkg_cflags   &&
1245         set_safe "${pkg}_libs"   $pkg_libs
1246 }
1247
1248 check_exec(){
1249     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1250 }
1251
1252 check_exec_crash(){
1253     code=$(cat)
1254
1255     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1256     # are safe but may not be available everywhere.  Thus we use
1257     # raise(SIGTERM) instead.  The check is run in a subshell so we
1258     # can redirect the "Terminated" message from the shell.  SIGBUS
1259     # is not defined by standard C so it is used conditionally.
1260
1261     (check_exec "$@") >> $logfile 2>&1 <<EOF
1262 #include <signal.h>
1263 static void sighandler(int sig){
1264     raise(SIGTERM);
1265 }
1266 int foo(void){
1267     $code
1268 }
1269 int (*func_ptr)(void) = foo;
1270 int main(void){
1271     signal(SIGILL, sighandler);
1272     signal(SIGFPE, sighandler);
1273     signal(SIGSEGV, sighandler);
1274 #ifdef SIGBUS
1275     signal(SIGBUS, sighandler);
1276 #endif
1277     return func_ptr();
1278 }
1279 EOF
1280 }
1281
1282 check_type(){
1283     log check_type "$@"
1284     headers=$1
1285     type=$2
1286     shift 2
1287     disable_safe "$type"
1288     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1289 }
1290
1291 check_struct(){
1292     log check_struct "$@"
1293     headers=$1
1294     struct=$2
1295     member=$3
1296     shift 3
1297     disable_safe "${struct}_${member}"
1298     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1299         enable_safe "${struct}_${member}"
1300 }
1301
1302 check_builtin(){
1303     log check_builtin "$@"
1304     name=$1
1305     headers=$2
1306     builtin=$3
1307     shift 3
1308     disable "$name"
1309     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1310 }
1311
1312 check_compile_assert(){
1313     log check_compile_assert "$@"
1314     name=$1
1315     headers=$2
1316     condition=$3
1317     shift 3
1318     disable "$name"
1319     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1320 }
1321
1322 require(){
1323     name="$1"
1324     headers="$2"
1325     func="$3"
1326     shift 3
1327     check_lib "$headers" $func "$@" || die "ERROR: $name not found"
1328 }
1329
1330 require_cpp(){
1331     name="$1"
1332     headers="$2"
1333     classes="$3"
1334     shift 3
1335     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1336 }
1337
1338 use_pkg_config(){
1339     pkg="$1"
1340     check_pkg_config "$@" || return 1
1341     add_cflags    $(get_safe "${pkg}_cflags")
1342     add_extralibs $(get_safe "${pkg}_libs")
1343 }
1344
1345 require_pkg_config(){
1346     use_pkg_config "$@" || die "ERROR: $pkg not found using pkg-config$pkg_config_fail_message"
1347 }
1348
1349 require_libfreetype(){
1350     log require_libfreetype "$@"
1351     pkg="freetype2"
1352     check_cmd $pkg_config --exists --print-errors $pkg \
1353       || die "ERROR: $pkg not found"
1354     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1355     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1356     {
1357         echo "#include <ft2build.h>"
1358         echo "#include FT_FREETYPE_H"
1359         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1360         echo "int main(void) { return 0; }"
1361     } | check_ld "cc" $pkg_cflags $pkg_libs \
1362       && set_safe "${pkg}_cflags" $pkg_cflags \
1363       && set_safe "${pkg}_libs"   $pkg_libs \
1364       || die "ERROR: $pkg not found"
1365     add_cflags    $(get_safe "${pkg}_cflags")
1366     add_extralibs $(get_safe "${pkg}_libs")
1367 }
1368
1369 hostcc_e(){
1370     eval printf '%s\\n' $HOSTCC_E
1371 }
1372
1373 hostcc_o(){
1374     eval printf '%s\\n' $HOSTCC_O
1375 }
1376
1377 check_host_cc(){
1378     log check_host_cc "$@"
1379     cat > $TMPC
1380     log_file $TMPC
1381     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1382 }
1383
1384 check_host_cpp(){
1385     log check_host_cpp "$@"
1386     cat > $TMPC
1387     log_file $TMPC
1388     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1389 }
1390
1391 check_host_cppflags(){
1392     log check_host_cppflags "$@"
1393     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1394 int x;
1395 EOF
1396 }
1397
1398 check_host_cflags(){
1399     log check_host_cflags "$@"
1400     set -- $($host_cflags_filter "$@")
1401     check_host_cc "$@" <<EOF && append host_cflags "$@"
1402 int x;
1403 EOF
1404 }
1405
1406 check_host_cpp_condition(){
1407     log check_host_cpp_condition "$@"
1408     header=$1
1409     condition=$2
1410     shift 2
1411     check_host_cpp "$@" <<EOF
1412 #include <$header>
1413 #if !($condition)
1414 #error "unsatisfied condition: $condition"
1415 #endif
1416 EOF
1417 }
1418
1419 cp_if_changed(){
1420     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1421     mkdir -p "$(dirname $2)"
1422     $cp_f "$1" "$2"
1423 }
1424
1425 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1426 # system-dependent things.
1427
1428 AVCODEC_COMPONENTS="
1429     bsfs
1430     decoders
1431     encoders
1432     hwaccels
1433     parsers
1434 "
1435
1436 AVDEVICE_COMPONENTS="
1437     indevs
1438     outdevs
1439 "
1440 AVFILTER_COMPONENTS="
1441     filters
1442 "
1443 AVFORMAT_COMPONENTS="
1444     demuxers
1445     muxers
1446     protocols
1447 "
1448
1449 AVRESAMPLE_COMPONENTS=""
1450 AVUTIL_COMPONENTS=""
1451
1452 COMPONENT_LIST="
1453     $AVCODEC_COMPONENTS
1454     $AVDEVICE_COMPONENTS
1455     $AVFILTER_COMPONENTS
1456     $AVFORMAT_COMPONENTS
1457     $AVRESAMPLE_COMPONENTS
1458     $AVUTIL_COMPONENTS
1459 "
1460
1461 EXAMPLE_LIST="
1462     avio_dir_cmd_example
1463     avio_reading_example
1464     decoding_encoding_example
1465     demuxing_decoding_example
1466     extract_mvs_example
1467     filter_audio_example
1468     filtering_audio_example
1469     filtering_video_example
1470     http_multiclient_example
1471     metadata_example
1472     muxing_example
1473     qsvdec_example
1474     remuxing_example
1475     resampling_audio_example
1476     scaling_video_example
1477     transcode_aac_example
1478     transcoding_example
1479 "
1480 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1481     bzlib
1482     iconv
1483     libxcb
1484     libxcb_shm
1485     libxcb_shape
1486     libxcb_xfixes
1487     lzma
1488     schannel
1489     sdl
1490     sdl2
1491     securetransport
1492     xlib
1493     zlib
1494 "
1495
1496 EXTERNAL_LIBRARY_GPL_LIST="
1497     frei0r
1498     libcdio
1499     librubberband
1500     libvidstab
1501     libx264
1502     libx265
1503     libxavs
1504     libxvid
1505 "
1506
1507 EXTERNAL_LIBRARY_NONFREE_LIST="
1508     libfdk_aac
1509     openssl
1510 "
1511
1512 EXTERNAL_LIBRARY_VERSION3_LIST="
1513     gmp
1514     libopencore_amrnb
1515     libopencore_amrwb
1516     libvo_amrwbenc
1517 "
1518
1519 EXTERNAL_LIBRARY_GPLV3_LIST="
1520     libsmbclient
1521 "
1522
1523 EXTERNAL_LIBRARY_LIST="
1524     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1525     $EXTERNAL_LIBRARY_GPL_LIST
1526     $EXTERNAL_LIBRARY_NONFREE_LIST
1527     $EXTERNAL_LIBRARY_VERSION3_LIST
1528     $EXTERNAL_LIBRARY_GPLV3_LIST
1529     avisynth
1530     chromaprint
1531     crystalhd
1532     decklink
1533     gcrypt
1534     gnutls
1535     jni
1536     ladspa
1537     libass
1538     libbluray
1539     libbs2b
1540     libcaca
1541     libcelt
1542     libdc1394
1543     libflite
1544     libfontconfig
1545     libfreetype
1546     libfribidi
1547     libgme
1548     libgsm
1549     libiec61883
1550     libilbc
1551     libkvazaar
1552     libmodplug
1553     libmp3lame
1554     libnut
1555     libopencv
1556     libopenh264
1557     libopenjpeg
1558     libopenmpt
1559     libopus
1560     libpulse
1561     librtmp
1562     libschroedinger
1563     libshine
1564     libsmbclient
1565     libsnappy
1566     libsoxr
1567     libspeex
1568     libssh
1569     libtesseract
1570     libtheora
1571     libtwolame
1572     libv4l2
1573     libvorbis
1574     libvpx
1575     libwavpack
1576     libwebp
1577     libzimg
1578     libzmq
1579     libzvbi
1580     mediacodec
1581     netcdf
1582     openal
1583     opencl
1584     opengl
1585     videotoolbox
1586 "
1587 HWACCEL_AUTODETECT_LIBRARY_LIST="
1588     audiotoolbox
1589     cuda
1590     cuvid
1591     d3d11va
1592     dxva2
1593     nvenc
1594     vaapi
1595     vda
1596     vdpau
1597     videotoolbox_hwaccel
1598     xvmc
1599 "
1600
1601 HWACCEL_LIBRARY_NONFREE_LIST="
1602     libnpp
1603 "
1604
1605 HWACCEL_LIBRARY_LIST="
1606     $HWACCEL_AUTODETECT_LIBRARY_LIST
1607     $HWACCEL_LIBRARY_NONFREE_LIST
1608     libmfx
1609     mmal
1610     omx
1611 "
1612
1613 DOCUMENT_LIST="
1614     doc
1615     htmlpages
1616     manpages
1617     podpages
1618     txtpages
1619 "
1620
1621 FEATURE_LIST="
1622     ftrapv
1623     gray
1624     hardcoded_tables
1625     omx_rpi
1626     runtime_cpudetect
1627     safe_bitstream_reader
1628     shared
1629     small
1630     static
1631     swscale_alpha
1632 "
1633
1634 LIBRARY_LIST="
1635     avcodec
1636     avdevice
1637     avfilter
1638     avformat
1639     avresample
1640     avutil
1641     postproc
1642     swresample
1643     swscale
1644 "
1645
1646 LICENSE_LIST="
1647     gpl
1648     nonfree
1649     version3
1650 "
1651
1652 PROGRAM_LIST="
1653     ffplay
1654     ffprobe
1655     ffserver
1656     ffmpeg
1657 "
1658
1659 SUBSYSTEM_LIST="
1660     dct
1661     dwt
1662     error_resilience
1663     faan
1664     fast_unaligned
1665     fft
1666     lsp
1667     lzo
1668     mdct
1669     pixelutils
1670     network
1671     rdft
1672 "
1673
1674 CONFIG_LIST="
1675     $COMPONENT_LIST
1676     $DOCUMENT_LIST
1677     $EXAMPLE_LIST
1678     $EXTERNAL_LIBRARY_LIST
1679     $HWACCEL_LIBRARY_LIST
1680     $FEATURE_LIST
1681     $LICENSE_LIST
1682     $LIBRARY_LIST
1683     $PROGRAM_LIST
1684     $SUBSYSTEM_LIST
1685     fontconfig
1686     memory_poisoning
1687     neon_clobber_test
1688     pic
1689     raise_major
1690     thumb
1691     valgrind_backtrace
1692     xmm_clobber_test
1693 "
1694
1695 THREADS_LIST="
1696     pthreads
1697     os2threads
1698     w32threads
1699 "
1700
1701 ATOMICS_LIST="
1702     atomics_gcc
1703     atomics_suncc
1704     atomics_win32
1705 "
1706
1707 AUTODETECT_LIBS="
1708     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1709     $HWACCEL_AUTODETECT_LIBRARY_LIST
1710     $THREADS_LIST
1711 "
1712
1713 ARCH_LIST="
1714     aarch64
1715     alpha
1716     arm
1717     avr32
1718     avr32_ap
1719     avr32_uc
1720     bfin
1721     ia64
1722     m68k
1723     mips
1724     mips64
1725     parisc
1726     ppc
1727     ppc64
1728     s390
1729     sh4
1730     sparc
1731     sparc64
1732     tilegx
1733     tilepro
1734     tomi
1735     x86
1736     x86_32
1737     x86_64
1738 "
1739
1740 ARCH_EXT_LIST_ARM="
1741     armv5te
1742     armv6
1743     armv6t2
1744     armv8
1745     neon
1746     vfp
1747     vfpv3
1748     setend
1749 "
1750
1751 ARCH_EXT_LIST_MIPS="
1752     mipsfpu
1753     mips32r2
1754     mips32r5
1755     mips64r2
1756     mips32r6
1757     mips64r6
1758     mipsdsp
1759     mipsdspr2
1760     msa
1761 "
1762
1763 ARCH_EXT_LIST_LOONGSON="
1764     loongson2
1765     loongson3
1766     mmi
1767 "
1768
1769 ARCH_EXT_LIST_X86_SIMD="
1770     aesni
1771     amd3dnow
1772     amd3dnowext
1773     avx
1774     avx2
1775     fma3
1776     fma4
1777     mmx
1778     mmxext
1779     sse
1780     sse2
1781     sse3
1782     sse4
1783     sse42
1784     ssse3
1785     xop
1786 "
1787
1788 ARCH_EXT_LIST_PPC="
1789     altivec
1790     dcbzl
1791     ldbrx
1792     power8
1793     ppc4xx
1794     vsx
1795 "
1796
1797 ARCH_EXT_LIST_X86="
1798     $ARCH_EXT_LIST_X86_SIMD
1799     cpunop
1800     i686
1801 "
1802
1803 ARCH_EXT_LIST="
1804     $ARCH_EXT_LIST_ARM
1805     $ARCH_EXT_LIST_PPC
1806     $ARCH_EXT_LIST_X86
1807     $ARCH_EXT_LIST_MIPS
1808     $ARCH_EXT_LIST_LOONGSON
1809 "
1810
1811 ARCH_FEATURES="
1812     aligned_stack
1813     fast_64bit
1814     fast_clz
1815     fast_cmov
1816     local_aligned_8
1817     local_aligned_16
1818     local_aligned_32
1819     simd_align_16
1820     simd_align_32
1821 "
1822
1823 BUILTIN_LIST="
1824     atomic_cas_ptr
1825     machine_rw_barrier
1826     MemoryBarrier
1827     mm_empty
1828     rdtsc
1829     sarestart
1830     sem_timedwait
1831     sync_val_compare_and_swap
1832 "
1833 HAVE_LIST_CMDLINE="
1834     inline_asm
1835     symver
1836     yasm
1837 "
1838
1839 HAVE_LIST_PUB="
1840     bigendian
1841     fast_unaligned
1842 "
1843
1844 HEADERS_LIST="
1845     alsa_asoundlib_h
1846     altivec_h
1847     arpa_inet_h
1848     asm_types_h
1849     cdio_paranoia_h
1850     cdio_paranoia_paranoia_h
1851     cuda_h
1852     dispatch_dispatch_h
1853     dev_bktr_ioctl_bt848_h
1854     dev_bktr_ioctl_meteor_h
1855     dev_ic_bt8xx_h
1856     dev_video_bktr_ioctl_bt848_h
1857     dev_video_meteor_ioctl_meteor_h
1858     direct_h
1859     dirent_h
1860     dlfcn_h
1861     d3d11_h
1862     dxva_h
1863     ES2_gl_h
1864     gsm_h
1865     io_h
1866     mach_mach_time_h
1867     machine_ioctl_bt848_h
1868     machine_ioctl_meteor_h
1869     malloc_h
1870     opencv2_core_core_c_h
1871     openjpeg_2_1_openjpeg_h
1872     openjpeg_2_0_openjpeg_h
1873     openjpeg_1_5_openjpeg_h
1874     OpenGL_gl3_h
1875     poll_h
1876     sndio_h
1877     soundcard_h
1878     stdatomic_h
1879     sys_mman_h
1880     sys_param_h
1881     sys_resource_h
1882     sys_select_h
1883     sys_soundcard_h
1884     sys_time_h
1885     sys_un_h
1886     sys_videoio_h
1887     termios_h
1888     udplite_h
1889     unistd_h
1890     valgrind_valgrind_h
1891     windows_h
1892     winsock2_h
1893 "
1894
1895 INTRINSICS_LIST="
1896     intrinsics_neon
1897 "
1898
1899 COMPLEX_FUNCS="
1900     cabs
1901     cexp
1902 "
1903
1904 MATH_FUNCS="
1905     atanf
1906     atan2f
1907     cbrt
1908     cbrtf
1909     copysign
1910     cosf
1911     erf
1912     exp2
1913     exp2f
1914     expf
1915     hypot
1916     isfinite
1917     isinf
1918     isnan
1919     ldexpf
1920     llrint
1921     llrintf
1922     log2
1923     log2f
1924     log10f
1925     lrint
1926     lrintf
1927     powf
1928     rint
1929     round
1930     roundf
1931     sinf
1932     trunc
1933     truncf
1934 "
1935
1936 SYSTEM_FUNCS="
1937     access
1938     aligned_malloc
1939     arc4random
1940     clock_gettime
1941     closesocket
1942     CommandLineToArgvW
1943     CoTaskMemFree
1944     CryptGenRandom
1945     dlopen
1946     fcntl
1947     flt_lim
1948     fork
1949     getaddrinfo
1950     gethrtime
1951     getopt
1952     GetProcessAffinityMask
1953     GetProcessMemoryInfo
1954     GetProcessTimes
1955     getrusage
1956     GetSystemTimeAsFileTime
1957     gettimeofday
1958     glob
1959     glXGetProcAddress
1960     gmtime_r
1961     inet_aton
1962     isatty
1963     jack_port_get_latency_range
1964     kbhit
1965     LoadLibrary
1966     localtime_r
1967     lstat
1968     lzo1x_999_compress
1969     mach_absolute_time
1970     MapViewOfFile
1971     memalign
1972     mkstemp
1973     mmap
1974     mprotect
1975     nanosleep
1976     PeekNamedPipe
1977     posix_memalign
1978     pthread_cancel
1979     sched_getaffinity
1980     SetConsoleTextAttribute
1981     SetConsoleCtrlHandler
1982     setmode
1983     setrlimit
1984     Sleep
1985     strerror_r
1986     sysconf
1987     sysctl
1988     usleep
1989     UTGetOSTypeFromString
1990     VirtualAlloc
1991     wglGetProcAddress
1992 "
1993
1994 TOOLCHAIN_FEATURES="
1995     as_dn_directive
1996     as_fpu_directive
1997     as_func
1998     as_object_arch
1999     asm_mod_q
2000     attribute_may_alias
2001     attribute_packed
2002     ebp_available
2003     ebx_available
2004     gnu_as
2005     gnu_windres
2006     ibm_asm
2007     inline_asm_direct_symbol_refs
2008     inline_asm_labels
2009     inline_asm_nonlocal_labels
2010     pragma_deprecated
2011     rsync_contimeout
2012     symver_asm_label
2013     symver_gnu_asm
2014     vfp_args
2015     xform_asm
2016     xmm_clobbers
2017 "
2018
2019 TYPES_LIST="
2020     CONDITION_VARIABLE_Ptr
2021     socklen_t
2022     struct_addrinfo
2023     struct_group_source_req
2024     struct_ip_mreq_source
2025     struct_ipv6_mreq
2026     struct_msghdr_msg_flags
2027     struct_pollfd
2028     struct_rusage_ru_maxrss
2029     struct_sctp_event_subscribe
2030     struct_sockaddr_in6
2031     struct_sockaddr_sa_len
2032     struct_sockaddr_storage
2033     struct_stat_st_mtim_tv_nsec
2034     struct_v4l2_frmivalenum_discrete
2035 "
2036
2037 HAVE_LIST="
2038     $ARCH_EXT_LIST
2039     $(add_suffix _external $ARCH_EXT_LIST)
2040     $(add_suffix _inline   $ARCH_EXT_LIST)
2041     $ARCH_FEATURES
2042     $ATOMICS_LIST
2043     $BUILTIN_LIST
2044     $COMPLEX_FUNCS
2045     $HAVE_LIST_CMDLINE
2046     $HAVE_LIST_PUB
2047     $HEADERS_LIST
2048     $INTRINSICS_LIST
2049     $MATH_FUNCS
2050     $SYSTEM_FUNCS
2051     $THREADS_LIST
2052     $TOOLCHAIN_FEATURES
2053     $TYPES_LIST
2054     atomics_native
2055     dos_paths
2056     dxva2_lib
2057     dxva2api_cobj
2058     libc_msvcrt
2059     libdc1394_1
2060     libdc1394_2
2061     makeinfo
2062     makeinfo_html
2063     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2064     perl
2065     pod2man
2066     sdl2
2067     section_data_rel_ro
2068     texi2html
2069     threads
2070     vaapi_drm
2071     vaapi_x11
2072     vdpau_x11
2073     winrt
2074     xlib
2075 "
2076
2077 # options emitted with CONFIG_ prefix but not available on the command line
2078 CONFIG_EXTRA="
2079     aandcttables
2080     ac3dsp
2081     audio_frame_queue
2082     audiodsp
2083     blockdsp
2084     bswapdsp
2085     cabac
2086     dirac_parse
2087     dvprofile
2088     exif
2089     faandct
2090     faanidct
2091     fdctdsp
2092     flacdsp
2093     fmtconvert
2094     frame_thread_encoder
2095     g722dsp
2096     golomb
2097     gplv3
2098     h263dsp
2099     h264chroma
2100     h264dsp
2101     h264parse
2102     h264pred
2103     h264qpel
2104     hpeldsp
2105     huffman
2106     huffyuvdsp
2107     huffyuvencdsp
2108     idctdsp
2109     iirfilter
2110     mdct15
2111     intrax8
2112     iso_media
2113     ividsp
2114     jpegtables
2115     lgplv3
2116     libx262
2117     llauddsp
2118     llviddsp
2119     llvidencdsp
2120     lpc
2121     lzf
2122     me_cmp
2123     mpeg_er
2124     mpegaudio
2125     mpegaudiodsp
2126     mpegvideo
2127     mpegvideoenc
2128     mss34dsp
2129     pixblockdsp
2130     qpeldsp
2131     qsv
2132     qsvdec
2133     qsvenc
2134     rangecoder
2135     riffdec
2136     riffenc
2137     rtpdec
2138     rtpenc_chain
2139     rv34dsp
2140     sinewin
2141     snappy
2142     srtp
2143     startcode
2144     texturedsp
2145     texturedspenc
2146     tpeldsp
2147     vaapi_encode
2148     vc1dsp
2149     videodsp
2150     vp3dsp
2151     vp56dsp
2152     vp8dsp
2153     vt_bt2020
2154     wma_freqs
2155     wmv2dsp
2156 "
2157
2158 CMDLINE_SELECT="
2159     $ARCH_EXT_LIST
2160     $CONFIG_LIST
2161     $HAVE_LIST_CMDLINE
2162     $THREADS_LIST
2163     asm
2164     cross_compile
2165     debug
2166     extra_warnings
2167     logging
2168     lto
2169     optimizations
2170     rpath
2171     stripping
2172 "
2173
2174 PATHS_LIST="
2175     bindir
2176     datadir
2177     docdir
2178     incdir
2179     libdir
2180     mandir
2181     pkgconfigdir
2182     prefix
2183     shlibdir
2184     install_name_dir
2185 "
2186
2187 CMDLINE_SET="
2188     $PATHS_LIST
2189     ar
2190     arch
2191     as
2192     assert_level
2193     build_suffix
2194     cc
2195     objcc
2196     cpu
2197     cross_prefix
2198     custom_allocator
2199     cxx
2200     dep_cc
2201     doxygen
2202     env
2203     extra_version
2204     gas
2205     host_cc
2206     host_cflags
2207     host_ld
2208     host_ldflags
2209     host_libs
2210     host_os
2211     install
2212     ld
2213     ln_s
2214     logfile
2215     malloc_prefix
2216     nm
2217     optflags
2218     pkg_config
2219     pkg_config_flags
2220     progs_suffix
2221     random_seed
2222     ranlib
2223     samples
2224     strip
2225     sws_max_filter_size
2226     sysinclude
2227     sysroot
2228     target_exec
2229     target_os
2230     target_path
2231     target_samples
2232     tempprefix
2233     toolchain
2234     valgrind
2235     yasmexe
2236 "
2237
2238 CMDLINE_APPEND="
2239     extra_cflags
2240     extra_cxxflags
2241     extra_objcflags
2242     host_cppflags
2243 "
2244
2245 # code dependency declarations
2246
2247 # architecture extensions
2248
2249 armv5te_deps="arm"
2250 armv6_deps="arm"
2251 armv6t2_deps="arm"
2252 armv8_deps="aarch64"
2253 neon_deps_any="aarch64 arm"
2254 intrinsics_neon_deps="neon"
2255 vfp_deps_any="aarch64 arm"
2256 vfpv3_deps="vfp"
2257 setend_deps="arm"
2258
2259 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2260
2261 loongson2_deps="mips"
2262 loongson3_deps="mips"
2263 mipsfpu_deps="mips"
2264 mipsdsp_deps="mips"
2265 mipsdspr2_deps="mips"
2266 mips32r2_deps="mips"
2267 mips32r5_deps="mips"
2268 mips32r6_deps="mips"
2269 mips64r2_deps="mips"
2270 mips64r6_deps="mips"
2271 msa_deps="mipsfpu"
2272 mmi_deps="mips"
2273
2274 altivec_deps="ppc"
2275 dcbzl_deps="ppc"
2276 ldbrx_deps="ppc"
2277 ppc4xx_deps="ppc"
2278 vsx_deps="altivec"
2279 power8_deps="vsx"
2280
2281 cpunop_deps="i686"
2282 x86_64_select="i686"
2283 x86_64_suggest="fast_cmov"
2284
2285 amd3dnow_deps="mmx"
2286 amd3dnowext_deps="amd3dnow"
2287 i686_deps="x86"
2288 mmx_deps="x86"
2289 mmxext_deps="mmx"
2290 sse_deps="mmxext"
2291 sse2_deps="sse"
2292 sse3_deps="sse2"
2293 ssse3_deps="sse3"
2294 sse4_deps="ssse3"
2295 sse42_deps="sse4"
2296 aesni_deps="sse42"
2297 avx_deps="sse42"
2298 xop_deps="avx"
2299 fma3_deps="avx"
2300 fma4_deps="avx"
2301 avx2_deps="avx"
2302
2303 mmx_external_deps="yasm"
2304 mmx_inline_deps="inline_asm"
2305 mmx_suggest="mmx_external mmx_inline"
2306
2307 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2308     eval dep=\$${ext}_deps
2309     eval ${ext}_external_deps='"${dep}_external"'
2310     eval ${ext}_inline_deps='"${dep}_inline"'
2311     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2312 done
2313
2314 aligned_stack_if_any="aarch64 ppc x86"
2315 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2316 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2317 fast_unaligned_if_any="aarch64 ppc x86"
2318 simd_align_16_if_any="altivec neon sse"
2319 simd_align_32_if_any="avx"
2320
2321 # system capabilities
2322 symver_if_any="symver_asm_label symver_gnu_asm"
2323 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
2324
2325 # threading support
2326 atomics_gcc_if="sync_val_compare_and_swap"
2327 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2328 atomics_win32_if="MemoryBarrier"
2329 atomics_native_if_any="$ATOMICS_LIST"
2330 w32threads_deps="atomics_native"
2331 threads_if_any="$THREADS_LIST"
2332
2333 # subsystems
2334 dct_select="rdft"
2335 dirac_parse_select="golomb"
2336 error_resilience_select="me_cmp"
2337 faandct_deps="faan fdctdsp"
2338 faanidct_deps="faan idctdsp"
2339 h264dsp_select="startcode"
2340 frame_thread_encoder_deps="encoders threads"
2341 intrax8_select="blockdsp idctdsp"
2342 mdct_select="fft"
2343 mdct15_select="fft"
2344 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2345 mpeg_er_select="error_resilience"
2346 mpegaudio_select="mpegaudiodsp"
2347 mpegaudiodsp_select="dct"
2348 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2349 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2350 vc1dsp_select="h264chroma qpeldsp startcode"
2351 rdft_select="fft"
2352
2353 # decoders / encoders
2354 aac_decoder_select="mdct15 mdct sinewin"
2355 aac_fixed_decoder_select="mdct sinewin"
2356 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2357 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2358 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2359 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2360 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2361 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2362 adpcm_g722_decoder_select="g722dsp"
2363 adpcm_g722_encoder_select="g722dsp"
2364 aic_decoder_select="golomb idctdsp"
2365 alac_encoder_select="lpc"
2366 als_decoder_select="bswapdsp"
2367 amrnb_decoder_select="lsp"
2368 amrwb_decoder_select="lsp"
2369 amv_decoder_select="sp5x_decoder exif"
2370 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2371 ape_decoder_select="bswapdsp llauddsp"
2372 apng_decoder_select="zlib"
2373 apng_encoder_select="llvidencdsp zlib"
2374 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2375 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2376 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2377 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2378 atrac1_decoder_select="mdct sinewin"
2379 atrac3_decoder_select="mdct"
2380 atrac3p_decoder_select="mdct sinewin"
2381 avrn_decoder_select="exif jpegtables"
2382 bink_decoder_select="blockdsp hpeldsp"
2383 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2384 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2385 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2386 cllc_decoder_select="bswapdsp"
2387 comfortnoise_encoder_select="lpc"
2388 cook_decoder_select="audiodsp mdct sinewin"
2389 cscd_decoder_select="lzo"
2390 cscd_decoder_suggest="zlib"
2391 dca_decoder_select="mdct"
2392 dds_decoder_select="texturedsp"
2393 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2394 dnxhd_decoder_select="blockdsp idctdsp"
2395 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2396 dvvideo_decoder_select="dvprofile idctdsp"
2397 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2398 dxa_decoder_select="zlib"
2399 dxv_decoder_select="lzf texturedsp"
2400 eac3_decoder_select="ac3_decoder"
2401 eac3_encoder_select="ac3_encoder"
2402 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2403 eatgq_decoder_select="aandcttables"
2404 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2405 exr_decoder_select="zlib"
2406 ffv1_decoder_select="golomb rangecoder"
2407 ffv1_encoder_select="rangecoder"
2408 ffvhuff_decoder_select="huffyuv_decoder"
2409 ffvhuff_encoder_select="huffyuv_encoder"
2410 fic_decoder_select="golomb"
2411 flac_decoder_select="flacdsp golomb"
2412 flac_encoder_select="bswapdsp flacdsp golomb lpc"
2413 flashsv2_decoder_select="zlib"
2414 flashsv2_encoder_select="zlib"
2415 flashsv_decoder_select="zlib"
2416 flashsv_encoder_select="zlib"
2417 flv_decoder_select="h263_decoder"
2418 flv_encoder_select="h263_encoder"
2419 fourxm_decoder_select="blockdsp bswapdsp"
2420 fraps_decoder_select="bswapdsp huffman"
2421 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2422 g729_decoder_select="audiodsp"
2423 h261_decoder_select="mpegvideo"
2424 h261_encoder_select="aandcttables mpegvideoenc"
2425 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2426 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2427 h263i_decoder_select="h263_decoder"
2428 h263p_decoder_select="h263_decoder"
2429 h263p_encoder_select="h263_encoder"
2430 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2431 h264_decoder_suggest="error_resilience"
2432 hap_decoder_select="snappy texturedsp"
2433 hap_encoder_deps="libsnappy"
2434 hap_encoder_select="texturedspenc"
2435 hevc_decoder_select="bswapdsp cabac golomb videodsp"
2436 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2437 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2438 iac_decoder_select="imc_decoder"
2439 imc_decoder_select="bswapdsp fft mdct sinewin"
2440 indeo3_decoder_select="hpeldsp"
2441 indeo4_decoder_select="ividsp"
2442 indeo5_decoder_select="ividsp"
2443 interplay_video_decoder_select="hpeldsp"
2444 jpegls_decoder_select="golomb mjpeg_decoder"
2445 jpegls_encoder_select="golomb"
2446 jv_decoder_select="blockdsp"
2447 lagarith_decoder_select="llviddsp"
2448 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2449 loco_decoder_select="golomb"
2450 magicyuv_decoder_select="llviddsp"
2451 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2452 metasound_decoder_select="lsp mdct sinewin"
2453 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2454 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2455 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2456 mjpegb_decoder_select="mjpeg_decoder"
2457 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2458 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2459 mlp_decoder_select="mlp_parser"
2460 motionpixels_decoder_select="bswapdsp"
2461 mp1_decoder_select="mpegaudio"
2462 mp1float_decoder_select="mpegaudio"
2463 mp2_decoder_select="mpegaudio"
2464 mp2float_decoder_select="mpegaudio"
2465 mp3_decoder_select="mpegaudio"
2466 mp3adu_decoder_select="mpegaudio"
2467 mp3adufloat_decoder_select="mpegaudio"
2468 mp3float_decoder_select="mpegaudio"
2469 mp3on4_decoder_select="mpegaudio"
2470 mp3on4float_decoder_select="mpegaudio"
2471 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2472 mpc8_decoder_select="mpegaudiodsp"
2473 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2474 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2475 mpegvideo_decoder_select="mpegvideo"
2476 mpeg1video_decoder_select="mpegvideo"
2477 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2478 mpeg2video_decoder_select="mpegvideo"
2479 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2480 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2481 mpeg4_encoder_select="h263_encoder"
2482 msa1_decoder_select="mss34dsp"
2483 msmpeg4v1_decoder_select="h263_decoder"
2484 msmpeg4v2_decoder_select="h263_decoder"
2485 msmpeg4v2_encoder_select="h263_encoder"
2486 msmpeg4v3_decoder_select="h263_decoder"
2487 msmpeg4v3_encoder_select="h263_encoder"
2488 mss2_decoder_select="vc1_decoder mpegvideo"
2489 mts2_decoder_select="mss34dsp"
2490 mxpeg_decoder_select="mjpeg_decoder"
2491 nellymoser_decoder_select="mdct sinewin"
2492 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2493 nuv_decoder_select="idctdsp lzo"
2494 on2avc_decoder_select="mdct"
2495 opus_decoder_deps="swresample"
2496 opus_decoder_select="mdct15"
2497 opus_encoder_select="audio_frame_queue mdct15"
2498 png_decoder_select="zlib"
2499 png_encoder_select="llvidencdsp zlib"
2500 prores_decoder_select="blockdsp idctdsp"
2501 prores_encoder_select="fdctdsp"
2502 qcelp_decoder_select="lsp"
2503 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2504 ra_144_decoder_select="audiodsp"
2505 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2506 ralf_decoder_select="golomb"
2507 rawvideo_decoder_select="bswapdsp"
2508 rscc_decoder_select="zlib"
2509 rtjpeg_decoder_select="me_cmp"
2510 rv10_decoder_select="h263_decoder"
2511 rv10_encoder_select="h263_encoder"
2512 rv20_decoder_select="h263_decoder"
2513 rv20_encoder_select="h263_encoder"
2514 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2515 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2516 screenpresso_decoder_select="zlib"
2517 shorten_decoder_select="golomb bswapdsp"
2518 sipr_decoder_select="lsp"
2519 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2520 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2521 sonic_decoder_select="golomb rangecoder"
2522 sonic_encoder_select="golomb rangecoder"
2523 sonic_ls_encoder_select="golomb rangecoder"
2524 sp5x_decoder_select="mjpeg_decoder"
2525 svq1_decoder_select="hpeldsp"
2526 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2527 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2528 svq3_decoder_suggest="zlib"
2529 tak_decoder_select="audiodsp"
2530 tdsc_decoder_select="zlib mjpeg_decoder"
2531 theora_decoder_select="vp3_decoder"
2532 thp_decoder_select="mjpeg_decoder"
2533 tiff_decoder_suggest="zlib lzma"
2534 tiff_encoder_suggest="zlib"
2535 truehd_decoder_select="mlp_parser"
2536 truemotion2_decoder_select="bswapdsp"
2537 truespeech_decoder_select="bswapdsp"
2538 tscc_decoder_select="zlib"
2539 twinvq_decoder_select="mdct lsp sinewin"
2540 txd_decoder_select="texturedsp"
2541 utvideo_decoder_select="bswapdsp llviddsp"
2542 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2543 vble_decoder_select="llviddsp"
2544 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2545 vc1_qsv_decoder_deps="libmfx"
2546 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel"
2547 vc1image_decoder_select="vc1_decoder"
2548 vorbis_decoder_select="mdct"
2549 vorbis_encoder_select="mdct"
2550 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2551 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2552 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2553 vp6a_decoder_select="vp6_decoder"
2554 vp6f_decoder_select="vp6_decoder"
2555 vp7_decoder_select="h264pred videodsp vp8dsp"
2556 vp8_decoder_select="h264pred videodsp vp8dsp"
2557 vp9_decoder_select="videodsp vp9_parser"
2558 webp_decoder_select="vp8_decoder exif"
2559 wmalossless_decoder_select="llauddsp"
2560 wmapro_decoder_select="mdct sinewin wma_freqs"
2561 wmav1_decoder_select="mdct sinewin wma_freqs"
2562 wmav1_encoder_select="mdct sinewin wma_freqs"
2563 wmav2_decoder_select="mdct sinewin wma_freqs"
2564 wmav2_encoder_select="mdct sinewin wma_freqs"
2565 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2566 wmv1_decoder_select="h263_decoder"
2567 wmv1_encoder_select="h263_encoder"
2568 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2569 wmv2_encoder_select="h263_encoder wmv2dsp"
2570 wmv3_decoder_select="vc1_decoder"
2571 wmv3image_decoder_select="wmv3_decoder"
2572 xma1_decoder_select="wmapro_decoder"
2573 xma2_decoder_select="wmapro_decoder"
2574 zerocodec_decoder_select="zlib"
2575 zlib_decoder_select="zlib"
2576 zlib_encoder_select="zlib"
2577 zmbv_decoder_select="zlib"
2578 zmbv_encoder_select="zlib"
2579
2580 # platform codecs
2581 audiotoolbox_deps="AudioToolbox_AudioToolbox_h"
2582 audiotoolbox_extralibs="-framework CoreFoundation -framework AudioToolbox -framework CoreMedia"
2583
2584 # hardware accelerators
2585 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2586 cuda_deps_any="dlopen LoadLibrary"
2587 cuvid_deps="cuda"
2588 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2589 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2590 dxva2_extralibs="-luser32"
2591 vaapi_deps="va_va_h"
2592 vda_framework_deps="VideoDecodeAcceleration_VDADecoder_h"
2593 vda_framework_extralibs="-framework VideoDecodeAcceleration"
2594 vda_deps="vda_framework pthreads"
2595 vda_extralibs="-framework CoreFoundation -framework QuartzCore"
2596 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2597 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2598 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2599 xvmc_deps="X11_extensions_XvMClib_h"
2600
2601 h263_vaapi_hwaccel_deps="vaapi"
2602 h263_vaapi_hwaccel_select="h263_decoder"
2603 h263_videotoolbox_hwaccel_deps="videotoolbox"
2604 h263_videotoolbox_hwaccel_select="h263_decoder"
2605 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2606 h264_cuvid_hwaccel_deps="cuda cuvid"
2607 h264_d3d11va_hwaccel_deps="d3d11va"
2608 h264_d3d11va_hwaccel_select="h264_decoder"
2609 h264_dxva2_hwaccel_deps="dxva2"
2610 h264_dxva2_hwaccel_select="h264_decoder"
2611 h264_mediacodec_decoder_deps="mediacodec"
2612 h264_mediacodec_hwaccel_deps="mediacodec"
2613 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2614 h264_mmal_decoder_deps="mmal"
2615 h264_mmal_decoder_select="mmal"
2616 h264_mmal_hwaccel_deps="mmal"
2617 h264_omx_encoder_deps="omx"
2618 h264_qsv_hwaccel_deps="libmfx"
2619 h264_vaapi_hwaccel_deps="vaapi"
2620 h264_vaapi_hwaccel_select="h264_decoder"
2621 h264_vda_decoder_deps="vda"
2622 h264_vda_decoder_select="h264_decoder"
2623 h264_vda_hwaccel_deps="vda"
2624 h264_vda_hwaccel_select="h264_decoder"
2625 h264_vda_old_hwaccel_deps="vda"
2626 h264_vda_old_hwaccel_select="h264_decoder"
2627 h264_vdpau_decoder_deps="vdpau"
2628 h264_vdpau_decoder_select="h264_decoder"
2629 h264_vdpau_hwaccel_deps="vdpau"
2630 h264_vdpau_hwaccel_select="h264_decoder"
2631 h264_videotoolbox_hwaccel_deps="videotoolbox"
2632 h264_videotoolbox_hwaccel_select="h264_decoder"
2633 hevc_cuvid_hwaccel_deps="cuda cuvid"
2634 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2635 hevc_d3d11va_hwaccel_select="hevc_decoder"
2636 hevc_mediacodec_decoder_deps="mediacodec"
2637 hevc_mediacodec_hwaccel_deps="mediacodec"
2638 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2639 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2640 hevc_dxva2_hwaccel_select="hevc_decoder"
2641 hevc_qsv_hwaccel_deps="libmfx"
2642 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2643 hevc_vaapi_hwaccel_select="hevc_decoder"
2644 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2645 hevc_vdpau_hwaccel_select="hevc_decoder"
2646 mjpeg_cuvid_hwaccel_deps="cuda cuvid"
2647 mpeg_vdpau_decoder_deps="vdpau"
2648 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2649 mpeg_xvmc_hwaccel_deps="xvmc"
2650 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2651 mpeg1_cuvid_hwaccel_deps="cuda cuvid"
2652 mpeg1_vdpau_decoder_deps="vdpau"
2653 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2654 mpeg1_vdpau_hwaccel_deps="vdpau"
2655 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2656 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2657 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2658 mpeg1_xvmc_hwaccel_deps="xvmc"
2659 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2660 mpeg2_crystalhd_decoder_select="crystalhd"
2661 mpeg2_cuvid_hwaccel_deps="cuda cuvid"
2662 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2663 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2664 mpeg2_dxva2_hwaccel_deps="dxva2"
2665 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2666 mpeg2_mmal_decoder_deps="mmal"
2667 mpeg2_mmal_decoder_select="mmal"
2668 mpeg2_mmal_hwaccel_deps="mmal"
2669 mpeg2_qsv_hwaccel_deps="libmfx"
2670 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2671 mpeg2_vaapi_hwaccel_deps="vaapi"
2672 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2673 mpeg2_vdpau_hwaccel_deps="vdpau"
2674 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2675 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2676 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2677 mpeg2_xvmc_hwaccel_deps="xvmc"
2678 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2679 mpeg4_crystalhd_decoder_select="crystalhd"
2680 mpeg4_cuvid_hwaccel_deps="cuda cuvid"
2681 mpeg4_mediacodec_decoder_deps="mediacodec"
2682 mpeg4_mediacodec_hwaccel_deps="mediacodec"
2683 mpeg4_mmal_decoder_deps="mmal"
2684 mpeg4_mmal_decoder_select="mmal"
2685 mpeg4_mmal_hwaccel_deps="mmal"
2686 mpeg4_omx_encoder_deps="omx"
2687 mpeg4_vaapi_hwaccel_deps="vaapi"
2688 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2689 mpeg4_vdpau_decoder_deps="vdpau"
2690 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2691 mpeg4_vdpau_hwaccel_deps="vdpau"
2692 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2693 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2694 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2695 msmpeg4_crystalhd_decoder_select="crystalhd"
2696 vc1_crystalhd_decoder_select="crystalhd"
2697 vc1_cuvid_hwaccel_deps="cuda cuvid"
2698 vc1_d3d11va_hwaccel_deps="d3d11va"
2699 vc1_d3d11va_hwaccel_select="vc1_decoder"
2700 vc1_dxva2_hwaccel_deps="dxva2"
2701 vc1_dxva2_hwaccel_select="vc1_decoder"
2702 vc1_mmal_decoder_deps="mmal"
2703 vc1_mmal_decoder_select="mmal"
2704 vc1_mmal_hwaccel_deps="mmal"
2705 vc1_qsv_hwaccel_deps="libmfx"
2706 vc1_qsv_hwaccel_select="qsvdec_vc1"
2707 vc1_vaapi_hwaccel_deps="vaapi"
2708 vc1_vaapi_hwaccel_select="vc1_decoder"
2709 vc1_vdpau_decoder_deps="vdpau"
2710 vc1_vdpau_decoder_select="vc1_decoder"
2711 vc1_vdpau_hwaccel_deps="vdpau"
2712 vc1_vdpau_hwaccel_select="vc1_decoder"
2713 vp8_cuvid_hwaccel_deps="cuda cuvid"
2714 vp9_cuvid_hwaccel_deps="cuda cuvid"
2715 vp8_mediacodec_decoder_deps="mediacodec"
2716 vp8_mediacodec_hwaccel_deps="mediacodec"
2717 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2718 vp9_d3d11va_hwaccel_select="vp9_decoder"
2719 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2720 vp9_dxva2_hwaccel_select="vp9_decoder"
2721 vp9_mediacodec_decoder_deps="mediacodec"
2722 vp9_mediacodec_hwaccel_deps="mediacodec"
2723 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2724 vp9_vaapi_hwaccel_select="vp9_decoder"
2725 wmv3_crystalhd_decoder_select="crystalhd"
2726 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2727 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2728 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2729 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2730 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2731
2732 # hardware-accelerated codecs
2733 omx_deps="dlopen pthreads"
2734 omx_extralibs='$ldl'
2735 qsvdec_select="qsv"
2736 qsvenc_select="qsv"
2737 vaapi_encode_deps="vaapi"
2738
2739 hwupload_cuda_filter_deps="cuda"
2740 scale_npp_filter_deps="cuda libnpp"
2741
2742 nvenc_deps="cuda"
2743 nvenc_deps_any="dlopen LoadLibrary"
2744 nvenc_encoder_deps="nvenc"
2745 h264_cuvid_decoder_deps="cuda cuvid"
2746 h264_cuvid_decoder_select="h264_mp4toannexb_bsf h264_cuvid_hwaccel"
2747 h264_nvenc_encoder_deps="nvenc"
2748 h264_qsv_decoder_deps="libmfx"
2749 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2750 h264_qsv_encoder_deps="libmfx"
2751 h264_qsv_encoder_select="qsvenc"
2752 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2753 h264_vaapi_encoder_select="vaapi_encode golomb"
2754
2755 hevc_cuvid_decoder_deps="cuda cuvid"
2756 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf hevc_cuvid_hwaccel"
2757 hevc_nvenc_encoder_deps="nvenc"
2758 hevc_qsv_decoder_deps="libmfx"
2759 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2760 hevc_qsv_encoder_deps="libmfx"
2761 hevc_qsv_encoder_select="qsvenc"
2762 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2763 hevc_vaapi_encoder_select="vaapi_encode golomb"
2764 mjpeg_cuvid_decoder_deps="cuda cuvid"
2765 mjpeg_cuvid_decoder_select="mjpeg_cuvid_hwaccel"
2766 mpeg1_cuvid_decoder_deps="cuda cuvid"
2767 mpeg1_cuvid_decoder_select="mpeg1_cuvid_hwaccel"
2768 mpeg2_cuvid_decoder_deps="cuda cuvid"
2769 mpeg2_cuvid_decoder_select="mpeg2_cuvid_hwaccel"
2770 mpeg2_qsv_decoder_deps="libmfx"
2771 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2772 mpeg2_qsv_encoder_deps="libmfx"
2773 mpeg2_qsv_encoder_select="qsvenc"
2774 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2775 mpeg2_vaapi_encoder_select="vaapi_encode"
2776 mpeg4_cuvid_decoder_deps="cuda cuvid"
2777 mpeg4_cuvid_decoder_select="mpeg4_cuvid_hwaccel"
2778 nvenc_h264_encoder_deps="nvenc"
2779 nvenc_hevc_encoder_deps="nvenc"
2780
2781 vc1_cuvid_decoder_deps="cuda cuvid"
2782 vc1_cuvid_decoder_select="vc1_cuvid_hwaccel"
2783 vp8_cuvid_decoder_deps="cuda cuvid"
2784 vp8_cuvid_decoder_select="vp8_cuvid_hwaccel"
2785 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2786 vp8_vaapi_encoder_select="vaapi_encode"
2787 vp9_cuvid_decoder_deps="cuda cuvid"
2788 vp9_cuvid_decoder_select="vp9_cuvid_hwaccel"
2789
2790 # parsers
2791 h264_parser_select="golomb h264dsp h264parse"
2792 hevc_parser_select="golomb"
2793 mpegvideo_parser_select="mpegvideo"
2794 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2795 vc1_parser_select="vc1dsp"
2796
2797 # bitstream_filters
2798 mjpeg2jpeg_bsf_select="jpegtables"
2799
2800 # external libraries
2801 aac_at_decoder_deps="audiotoolbox"
2802 ac3_at_decoder_deps="audiotoolbox"
2803 ac3_at_decoder_select="ac3_parser"
2804 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2805 alac_at_decoder_deps="audiotoolbox"
2806 amr_nb_at_decoder_deps="audiotoolbox"
2807 avisynth_deps_any="dlopen LoadLibrary"
2808 avisynth_demuxer_deps="avisynth"
2809 avisynth_demuxer_select="riffdec"
2810 eac3_at_decoder_deps="audiotoolbox"
2811 eac3_at_decoder_select="ac3_parser"
2812 gsm_ms_at_decoder_deps="audiotoolbox"
2813 ilbc_at_decoder_deps="audiotoolbox"
2814 mp1_at_decoder_deps="audiotoolbox"
2815 mp2_at_decoder_deps="audiotoolbox"
2816 mp3_at_decoder_deps="audiotoolbox"
2817 pcm_alaw_at_decoder_deps="audiotoolbox"
2818 pcm_mulaw_at_decoder_deps="audiotoolbox"
2819 qdmc_at_decoder_deps="audiotoolbox"
2820 qdm2_at_decoder_deps="audiotoolbox"
2821 aac_at_encoder_deps="audiotoolbox"
2822 aac_at_encoder_select="audio_frame_queue"
2823 alac_at_encoder_deps="audiotoolbox"
2824 alac_at_encoder_select="audio_frame_queue"
2825 ilbc_at_encoder_deps="audiotoolbox"
2826 ilbc_at_encoder_select="audio_frame_queue"
2827 pcm_alaw_at_encoder_deps="audiotoolbox"
2828 pcm_alaw_at_encoder_select="audio_frame_queue"
2829 pcm_mulaw_at_encoder_deps="audiotoolbox"
2830 pcm_mulaw_at_encoder_select="audio_frame_queue"
2831 chromaprint_muxer_deps="chromaprint"
2832 h264_videotoolbox_encoder_deps="videotoolbox_encoder pthreads"
2833 libcelt_decoder_deps="libcelt"
2834 libfdk_aac_decoder_deps="libfdk_aac"
2835 libfdk_aac_encoder_deps="libfdk_aac"
2836 libfdk_aac_encoder_select="audio_frame_queue"
2837 libgme_demuxer_deps="libgme"
2838 libgsm_decoder_deps="libgsm"
2839 libgsm_encoder_deps="libgsm"
2840 libgsm_ms_decoder_deps="libgsm"
2841 libgsm_ms_encoder_deps="libgsm"
2842 libilbc_decoder_deps="libilbc"
2843 libilbc_encoder_deps="libilbc"
2844 libkvazaar_encoder_deps="libkvazaar"
2845 libmodplug_demuxer_deps="libmodplug"
2846 libmp3lame_encoder_deps="libmp3lame"
2847 libmp3lame_encoder_select="audio_frame_queue"
2848 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2849 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2850 libopencore_amrnb_encoder_select="audio_frame_queue"
2851 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2852 libopenh264_decoder_deps="libopenh264"
2853 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2854 libopenh264_encoder_deps="libopenh264"
2855 libopenjpeg_decoder_deps="libopenjpeg"
2856 libopenjpeg_encoder_deps="libopenjpeg"
2857 libopenmpt_demuxer_deps="libopenmpt"
2858 libopus_decoder_deps="libopus"
2859 libopus_encoder_deps="libopus"
2860 libopus_encoder_select="audio_frame_queue"
2861 libschroedinger_decoder_deps="libschroedinger"
2862 libschroedinger_encoder_deps="libschroedinger"
2863 libshine_encoder_deps="libshine"
2864 libshine_encoder_select="audio_frame_queue"
2865 libspeex_decoder_deps="libspeex"
2866 libspeex_encoder_deps="libspeex"
2867 libspeex_encoder_select="audio_frame_queue"
2868 libtheora_encoder_deps="libtheora"
2869 libtwolame_encoder_deps="libtwolame"
2870 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2871 libvorbis_decoder_deps="libvorbis"
2872 libvorbis_encoder_deps="libvorbis"
2873 libvorbis_encoder_select="audio_frame_queue"
2874 libvpx_vp8_decoder_deps="libvpx"
2875 libvpx_vp8_encoder_deps="libvpx"
2876 libvpx_vp9_decoder_deps="libvpx"
2877 libvpx_vp9_encoder_deps="libvpx"
2878 libwavpack_encoder_deps="libwavpack"
2879 libwebp_encoder_deps="libwebp"
2880 libwebp_anim_encoder_deps="libwebp"
2881 libx262_encoder_deps="libx262"
2882 libx264_encoder_deps="libx264"
2883 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2884 libx264rgb_encoder_select="libx264_encoder"
2885 libx265_encoder_deps="libx265"
2886 libxavs_encoder_deps="libxavs"
2887 libxvid_encoder_deps="libxvid"
2888 libzvbi_teletext_decoder_deps="libzvbi"
2889 videotoolbox_deps="VideoToolbox_VideoToolbox_h"
2890 videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework CoreVideo"
2891 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2892 videotoolbox_encoder_suggest="vda_framework vt_bt2020"
2893 vt_bt2020_deps="kCVImageBufferColorPrimaries_ITU_R_2020"
2894
2895 # demuxers / muxers
2896 ac3_demuxer_select="ac3_parser"
2897 aiff_muxer_select="iso_media"
2898 asf_demuxer_select="riffdec"
2899 asf_o_demuxer_select="riffdec"
2900 asf_muxer_select="riffenc"
2901 asf_stream_muxer_select="asf_muxer"
2902 avi_demuxer_select="iso_media riffdec exif"
2903 avi_muxer_select="riffenc"
2904 caf_demuxer_select="iso_media riffdec"
2905 caf_muxer_select="iso_media"
2906 dash_muxer_select="mp4_muxer"
2907 dirac_demuxer_select="dirac_parser"
2908 dts_demuxer_select="dca_parser"
2909 dtshd_demuxer_select="dca_parser"
2910 dv_demuxer_select="dvprofile"
2911 dv_muxer_select="dvprofile"
2912 dxa_demuxer_select="riffdec"
2913 eac3_demuxer_select="ac3_parser"
2914 f4v_muxer_select="mov_muxer"
2915 fifo_muxer_deps="threads"
2916 flac_demuxer_select="flac_parser"
2917 hds_muxer_select="flv_muxer"
2918 hls_muxer_select="mpegts_muxer"
2919 image2_alias_pix_demuxer_select="image2_demuxer"
2920 image2_brender_pix_demuxer_select="image2_demuxer"
2921 ipod_muxer_select="mov_muxer"
2922 ismv_muxer_select="mov_muxer"
2923 libnut_demuxer_deps="libnut"
2924 libnut_muxer_deps="libnut"
2925 matroska_audio_muxer_select="matroska_muxer"
2926 matroska_demuxer_select="iso_media riffdec"
2927 matroska_demuxer_suggest="bzlib lzo zlib"
2928 matroska_muxer_select="iso_media riffenc"
2929 mmf_muxer_select="riffenc"
2930 mov_demuxer_select="iso_media riffdec"
2931 mov_demuxer_suggest="zlib"
2932 mov_muxer_select="iso_media riffenc rtpenc_chain"
2933 mp3_demuxer_select="mpegaudio_parser"
2934 mp4_muxer_select="mov_muxer"
2935 mpegts_demuxer_select="iso_media"
2936 mpegts_muxer_select="adts_muxer latm_muxer"
2937 mpegtsraw_demuxer_select="mpegts_demuxer"
2938 mxf_d10_muxer_select="mxf_muxer"
2939 mxf_opatom_muxer_select="mxf_muxer"
2940 nut_muxer_select="riffenc"
2941 nuv_demuxer_select="riffdec"
2942 oga_muxer_select="ogg_muxer"
2943 ogg_demuxer_select="dirac_parse"
2944 ogv_muxer_select="ogg_muxer"
2945 opus_muxer_select="ogg_muxer"
2946 psp_muxer_select="mov_muxer"
2947 rtp_demuxer_select="sdp_demuxer"
2948 rtp_muxer_select="golomb"
2949 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2950 rtsp_demuxer_select="http_protocol rtpdec"
2951 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2952 sap_demuxer_select="sdp_demuxer"
2953 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2954 sdp_demuxer_select="rtpdec"
2955 smoothstreaming_muxer_select="ismv_muxer"
2956 spdif_muxer_select="aac_parser"
2957 spx_muxer_select="ogg_muxer"
2958 swf_demuxer_suggest="zlib"
2959 tak_demuxer_select="tak_parser"
2960 tg2_muxer_select="mov_muxer"
2961 tgp_muxer_select="mov_muxer"
2962 vobsub_demuxer_select="mpegps_demuxer"
2963 w64_demuxer_select="wav_demuxer"
2964 w64_muxer_select="wav_muxer"
2965 wav_demuxer_select="riffdec"
2966 wav_muxer_select="riffenc"
2967 webm_muxer_select="iso_media riffenc"
2968 webm_dash_manifest_demuxer_select="matroska_demuxer"
2969 wtv_demuxer_select="mpegts_demuxer riffdec"
2970 wtv_muxer_select="mpegts_muxer riffenc"
2971 xmv_demuxer_select="riffdec"
2972 xwma_demuxer_select="riffdec"
2973
2974 # indevs / outdevs
2975 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2976 alsa_outdev_deps="alsa_asoundlib_h"
2977 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2978 avfoundation_indev_select="avfoundation"
2979 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2980 caca_outdev_deps="libcaca"
2981 decklink_indev_deps="decklink pthreads"
2982 decklink_indev_extralibs="-lstdc++"
2983 decklink_outdev_deps="decklink pthreads"
2984 decklink_outdev_extralibs="-lstdc++"
2985 dshow_indev_deps="IBaseFilter"
2986 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
2987 dv1394_indev_deps="dv1394"
2988 dv1394_indev_select="dv_demuxer"
2989 fbdev_indev_deps="linux_fb_h"
2990 fbdev_outdev_deps="linux_fb_h"
2991 gdigrab_indev_deps="CreateDIBSection"
2992 gdigrab_indev_extralibs="-lgdi32"
2993 gdigrab_indev_select="bmp_decoder"
2994 iec61883_indev_deps="libiec61883"
2995 jack_indev_deps="jack_jack_h"
2996 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2997 lavfi_indev_deps="avfilter"
2998 libcdio_indev_deps="libcdio"
2999 libdc1394_indev_deps="libdc1394"
3000 libv4l2_indev_deps="libv4l2"
3001 openal_indev_deps="openal"
3002 opengl_outdev_deps="opengl"
3003 oss_indev_deps_any="soundcard_h sys_soundcard_h"
3004 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
3005 pulse_indev_deps="libpulse"
3006 pulse_outdev_deps="libpulse"
3007 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
3008 qtkit_indev_select="qtkit"
3009 sdl2_outdev_deps="sdl2"
3010 sndio_indev_deps="sndio_h"
3011 sndio_outdev_deps="sndio_h"
3012 v4l_indev_deps="linux_videodev_h"
3013 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3014 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3015 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
3016 vfwcap_indev_extralibs="-lavicap32"
3017 xcbgrab_indev_deps="libxcb"
3018 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3019 xv_outdev_extralibs="-lXv -lX11 -lXext"
3020
3021 # protocols
3022 async_protocol_deps="threads"
3023 bluray_protocol_deps="libbluray"
3024 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
3025 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3026 ffrtmpcrypt_protocol_select="tcp_protocol"
3027 ffrtmphttp_protocol_deps="!librtmp_protocol"
3028 ffrtmphttp_protocol_select="http_protocol"
3029 ftp_protocol_select="tcp_protocol"
3030 gopher_protocol_select="network"
3031 http_protocol_select="tcp_protocol"
3032 httpproxy_protocol_select="tcp_protocol"
3033 https_protocol_select="tls_protocol"
3034 icecast_protocol_select="http_protocol"
3035 librtmp_protocol_deps="librtmp"
3036 librtmpe_protocol_deps="librtmp"
3037 librtmps_protocol_deps="librtmp"
3038 librtmpt_protocol_deps="librtmp"
3039 librtmpte_protocol_deps="librtmp"
3040 libsmbclient_protocol_deps="libsmbclient gplv3"
3041 libssh_protocol_deps="libssh"
3042 mmsh_protocol_select="http_protocol"
3043 mmst_protocol_select="network"
3044 rtmp_protocol_deps="!librtmp_protocol"
3045 rtmp_protocol_select="tcp_protocol"
3046 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3047 rtmps_protocol_deps="!librtmp_protocol"
3048 rtmps_protocol_select="tls_protocol"
3049 rtmpt_protocol_select="ffrtmphttp_protocol"
3050 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3051 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3052 rtp_protocol_select="udp_protocol"
3053 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3054 sctp_protocol_select="network"
3055 srtp_protocol_select="rtp_protocol srtp"
3056 tcp_protocol_select="network"
3057 tls_gnutls_protocol_deps="gnutls !tls_schannel_protocol !tls_securetransport_protocol"
3058 tls_gnutls_protocol_select="tcp_protocol"
3059 tls_openssl_protocol_deps="openssl !tls_schannel_protocol !tls_securetransport_protocol !tls_gnutls_protocol"
3060 tls_openssl_protocol_select="tcp_protocol"
3061 tls_schannel_protocol_deps="schannel"
3062 tls_schannel_protocol_select="tcp_protocol"
3063 tls_securetransport_protocol_deps="securetransport"
3064 tls_securetransport_protocol_select="tcp_protocol"
3065 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
3066 udp_protocol_select="network"
3067 udplite_protocol_select="network"
3068 unix_protocol_deps="sys_un_h"
3069 unix_protocol_select="network"
3070
3071 # filters
3072 afftfilt_filter_deps="avcodec"
3073 afftfilt_filter_select="fft"
3074 amovie_filter_deps="avcodec avformat"
3075 aresample_filter_deps="swresample"
3076 ass_filter_deps="libass"
3077 asyncts_filter_deps="avresample"
3078 atempo_filter_deps="avcodec"
3079 atempo_filter_select="rdft"
3080 azmq_filter_deps="libzmq"
3081 blackframe_filter_deps="gpl"
3082 boxblur_filter_deps="gpl"
3083 bs2b_filter_deps="libbs2b"
3084 colormatrix_filter_deps="gpl"
3085 cover_rect_filter_deps="avcodec avformat gpl"
3086 cropdetect_filter_deps="gpl"
3087 deinterlace_qsv_filter_deps="libmfx"
3088 deinterlace_vaapi_filter_deps="vaapi"
3089 delogo_filter_deps="gpl"
3090 deshake_filter_select="pixelutils"
3091 drawtext_filter_deps="libfreetype"
3092 eq_filter_deps="gpl"
3093 fftfilt_filter_deps="avcodec"
3094 fftfilt_filter_select="rdft"
3095 find_rect_filter_deps="avcodec avformat gpl"
3096 firequalizer_filter_deps="avcodec"
3097 firequalizer_filter_select="rdft"
3098 flite_filter_deps="libflite"
3099 framerate_filter_select="pixelutils"
3100 frei0r_filter_deps="frei0r dlopen"
3101 frei0r_src_filter_deps="frei0r dlopen"
3102 fspp_filter_deps="gpl"
3103 geq_filter_deps="gpl"
3104 histeq_filter_deps="gpl"
3105 hqdn3d_filter_deps="gpl"
3106 interlace_filter_deps="gpl"
3107 kerndeint_filter_deps="gpl"
3108 ladspa_filter_deps="ladspa dlopen"
3109 mcdeint_filter_deps="avcodec gpl"
3110 movie_filter_deps="avcodec avformat"
3111 mpdecimate_filter_deps="gpl"
3112 mpdecimate_filter_select="pixelutils"
3113 mptestsrc_filter_deps="gpl"
3114 negate_filter_deps="lut_filter"
3115 nnedi_filter_deps="gpl"
3116 ocr_filter_deps="libtesseract"
3117 ocv_filter_deps="libopencv"
3118 owdenoise_filter_deps="gpl"
3119 pan_filter_deps="swresample"
3120 perspective_filter_deps="gpl"
3121 phase_filter_deps="gpl"
3122 pp7_filter_deps="gpl"
3123 pp_filter_deps="gpl postproc"
3124 pullup_filter_deps="gpl"
3125 removelogo_filter_deps="avcodec avformat swscale"
3126 repeatfields_filter_deps="gpl"
3127 resample_filter_deps="avresample"
3128 rubberband_filter_deps="librubberband"
3129 sab_filter_deps="gpl swscale"
3130 scale2ref_filter_deps="swscale"
3131 scale_filter_deps="swscale"
3132 scale_qsv_filter_deps="libmfx"
3133 select_filter_select="pixelutils"
3134 showcqt_filter_deps="avcodec avformat swscale"
3135 showcqt_filter_select="fft"
3136 showfreqs_filter_deps="avcodec"
3137 showfreqs_filter_select="fft"
3138 showspectrum_filter_deps="avcodec"
3139 showspectrum_filter_select="fft"
3140 showspectrumpic_filter_deps="avcodec"
3141 showspectrumpic_filter_select="fft"
3142 smartblur_filter_deps="gpl swscale"
3143 sofalizer_filter_deps="netcdf avcodec"
3144 sofalizer_filter_select="fft"
3145 spectrumsynth_filter_deps="avcodec"
3146 spectrumsynth_filter_select="fft"
3147 spp_filter_deps="gpl avcodec"
3148 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3149 stereo3d_filter_deps="gpl"
3150 subtitles_filter_deps="avformat avcodec libass"
3151 super2xsai_filter_deps="gpl"
3152 pixfmts_super2xsai_test_deps="super2xsai_filter"
3153 tinterlace_filter_deps="gpl"
3154 tinterlace_merge_test_deps="tinterlace_filter"
3155 tinterlace_pad_test_deps="tinterlace_filter"
3156 uspp_filter_deps="gpl avcodec"
3157 vaguedenoiser_filter_deps="gpl"
3158 vidstabdetect_filter_deps="libvidstab"
3159 vidstabtransform_filter_deps="libvidstab"
3160 zmq_filter_deps="libzmq"
3161 zoompan_filter_deps="swscale"
3162 zscale_filter_deps="libzimg"
3163 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3164
3165 # examples
3166 avio_dir_cmd_deps="avformat avutil"
3167 avio_reading_deps="avformat avcodec avutil"
3168 decoding_encoding_example_deps="avcodec avformat avutil"
3169 demuxing_decoding_example_deps="avcodec avformat avutil"
3170 extract_mvs_example_deps="avcodec avformat avutil"
3171 filter_audio_example_deps="avfilter avutil"
3172 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3173 filtering_video_example_deps="avfilter avcodec avformat avutil"
3174 http_multiclient_example_deps="avformat avutil fork"
3175 metadata_example_deps="avformat avutil"
3176 muxing_example_deps="avcodec avformat avutil swscale"
3177 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
3178 remuxing_example_deps="avcodec avformat avutil"
3179 resampling_audio_example_deps="avutil swresample"
3180 scaling_video_example_deps="avutil swscale"
3181 transcode_aac_example_deps="avcodec avformat swresample"
3182 transcoding_example_deps="avfilter avcodec avformat avutil"
3183
3184 # libraries, in linking order
3185 avcodec_deps="avutil"
3186 avdevice_deps="avformat avcodec avutil"
3187 avfilter_deps="avutil"
3188 avformat_deps="avcodec avutil"
3189 avresample_deps="avutil"
3190 postproc_deps="avutil gpl"
3191 swresample_deps="avutil"
3192 swscale_deps="avutil"
3193
3194 # programs
3195 ffmpeg_deps="avcodec avfilter avformat swresample"
3196 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3197                null_filter
3198                trim_filter"
3199 ffplay_deps="avcodec avformat swscale swresample sdl2"
3200 ffplay_libs='$sdl2_libs'
3201 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3202 ffprobe_deps="avcodec avformat"
3203 ffserver_deps="avformat fork sarestart"
3204 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3205
3206 # documentation
3207 podpages_deps="perl"
3208 manpages_deps="perl pod2man"
3209 htmlpages_deps="perl"
3210 htmlpages_deps_any="makeinfo_html texi2html"
3211 txtpages_deps="perl makeinfo"
3212 doc_deps_any="manpages htmlpages podpages txtpages"
3213
3214 # default parameters
3215
3216 logfile="config.log"
3217
3218 # installation paths
3219 prefix_default="/usr/local"
3220 bindir_default='${prefix}/bin'
3221 datadir_default='${prefix}/share/ffmpeg'
3222 docdir_default='${prefix}/share/doc/ffmpeg'
3223 incdir_default='${prefix}/include'
3224 libdir_default='${prefix}/lib'
3225 mandir_default='${prefix}/share/man'
3226
3227 # toolchain
3228 ar_default="ar"
3229 cc_default="gcc"
3230 cxx_default="g++"
3231 host_cc_default="gcc"
3232 cp_f="cp -f"
3233 doxygen_default="doxygen"
3234 install="install"
3235 ln_s_default="ln -s -f"
3236 nm_default="nm -g"
3237 objformat="elf"
3238 pkg_config_default=pkg-config
3239 ranlib_default="ranlib"
3240 strip_default="strip"
3241 version_script='--version-script'
3242 yasmexe_default="yasm"
3243 windres_default="windres"
3244
3245 # OS
3246 target_os_default=$(tolower $(uname -s))
3247 host_os=$target_os_default
3248
3249 # machine
3250 if test "$target_os_default" = aix; then
3251     arch_default=$(uname -p)
3252     strip_default="strip -X32_64"
3253 else
3254     arch_default=$(uname -m)
3255 fi
3256 cpu="generic"
3257 intrinsics="none"
3258
3259 # configurable options
3260 enable $PROGRAM_LIST
3261 enable $DOCUMENT_LIST
3262 enable $EXAMPLE_LIST
3263 enable $(filter_out avresample $LIBRARY_LIST)
3264 enable stripping
3265
3266 enable asm
3267 enable debug
3268 enable doc
3269 enable faan faandct faanidct
3270 enable optimizations
3271 enable runtime_cpudetect
3272 enable safe_bitstream_reader
3273 enable static
3274 enable swscale_alpha
3275 enable valgrind_backtrace
3276
3277 sws_max_filter_size_default=256
3278 set_default sws_max_filter_size
3279
3280 # build settings
3281 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3282 LIBPREF="lib"
3283 LIBSUF=".a"
3284 FULLNAME='$(NAME)$(BUILDSUF)'
3285 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3286 SLIBPREF="lib"
3287 SLIBSUF=".so"
3288 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3289 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3290 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3291 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3292 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3293 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3294 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3295
3296 asflags_filter=echo
3297 cflags_filter=echo
3298 ldflags_filter=echo
3299
3300 AS_C='-c'
3301 AS_O='-o $@'
3302 CC_C='-c'
3303 CC_E='-E -o $@'
3304 CC_O='-o $@'
3305 CXX_C='-c'
3306 CXX_O='-o $@'
3307 OBJCC_C='-c'
3308 OBJCC_E='-E -o $@'
3309 OBJCC_O='-o $@'
3310 LD_O='-o $@'
3311 LD_LIB='-l%'
3312 LD_PATH='-L'
3313 HOSTCC_C='-c'
3314 HOSTCC_E='-E -o $@'
3315 HOSTCC_O='-o $@'
3316 HOSTLD_O='-o $@'
3317
3318 host_libs='-lm'
3319 host_cflags_filter=echo
3320 host_ldflags_filter=echo
3321
3322 target_path='$(CURDIR)'
3323
3324 # since the object filename is not given with the -MM flag, the compiler
3325 # is only able to print the basename, and we must add the path ourselves
3326 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3327 DEPFLAGS='-MM'
3328
3329 # find source path
3330 if test -f configure; then
3331     source_path=.
3332 else
3333     source_path=$(cd $(dirname "$0"); pwd)
3334     case "$source_path" in
3335         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3336     esac
3337     test -e "$source_path/config.h" &&
3338         die "Out of tree builds are impossible with config.h in source dir."
3339 fi
3340
3341 for v in "$@"; do
3342     r=${v#*=}
3343     l=${v%"$r"}
3344     r=$(sh_quote "$r")
3345     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3346 done
3347
3348 find_things(){
3349     thing=$1
3350     pattern=$2
3351     file=$source_path/$3
3352     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3353 }
3354
3355 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3356 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3357 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3358 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3359 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3360 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3361 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3362 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3363 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3364
3365 find_things_extern(){
3366     thing=$1
3367     pattern=$2
3368     file=$source_path/$3
3369     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3370 }
3371
3372 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3373 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3374
3375 ALL_COMPONENTS="
3376     $BSF_LIST
3377     $DECODER_LIST
3378     $DEMUXER_LIST
3379     $ENCODER_LIST
3380     $FILTER_LIST
3381     $HWACCEL_LIST
3382     $INDEV_LIST
3383     $MUXER_LIST
3384     $OUTDEV_LIST
3385     $PARSER_LIST
3386     $PROTOCOL_LIST
3387 "
3388
3389 for n in $COMPONENT_LIST; do
3390     v=$(toupper ${n%s})_LIST
3391     eval enable \$$v
3392     eval ${n}_if_any="\$$v"
3393 done
3394
3395 enable $ARCH_EXT_LIST
3396
3397 die_unknown(){
3398     echo "Unknown option \"$1\"."
3399     echo "See $0 --help for available options."
3400     exit 1
3401 }
3402
3403 print_in_columns() {
3404     cols=$(expr $ncols / 24)
3405     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3406 }
3407
3408 show_list() {
3409     suffix=_$1
3410     shift
3411     echo $* | sed s/$suffix//g | print_in_columns
3412     exit 0
3413 }
3414
3415 rand_list(){
3416     IFS=', '
3417     set -- $*
3418     unset IFS
3419     for thing; do
3420         comp=${thing%:*}
3421         prob=${thing#$comp}
3422         prob=${prob#:}
3423         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3424         echo "prob ${prob:-0.5}"
3425         printf '%s\n' $comp
3426     done
3427 }
3428
3429 do_random(){
3430     action=$1
3431     shift
3432     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3433     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3434 }
3435
3436 for opt do
3437     optval="${opt#*=}"
3438     case "$opt" in
3439         --extra-ldflags=*)
3440             add_ldflags $optval
3441         ;;
3442         --extra-ldexeflags=*)
3443             add_ldexeflags $optval
3444         ;;
3445         --extra-ldlibflags=*)
3446             add_ldlibflags $optval
3447         ;;
3448         --extra-libs=*)
3449             add_extralibs $optval
3450         ;;
3451         --disable-devices)
3452             disable $INDEV_LIST $OUTDEV_LIST
3453         ;;
3454         --enable-debug=*)
3455             debuglevel="$optval"
3456         ;;
3457         --disable-programs)
3458             disable $PROGRAM_LIST
3459         ;;
3460         --disable-everything)
3461             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3462         ;;
3463         --disable-all)
3464             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3465             disable $LIBRARY_LIST $PROGRAM_LIST doc
3466             enable avutil
3467         ;;
3468         --enable-random|--disable-random)
3469             action=${opt%%-random}
3470             do_random ${action#--} $COMPONENT_LIST
3471         ;;
3472         --enable-random=*|--disable-random=*)
3473             action=${opt%%-random=*}
3474             do_random ${action#--} $optval
3475         ;;
3476         --enable-*=*|--disable-*=*)
3477             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3478             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3479             eval list=\$$(toupper $thing)_LIST
3480             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3481             list=$(filter "$name" $list)
3482             [ "$list" = "" ] && warn "Option $opt did not match anything"
3483             $action $list
3484         ;;
3485         --enable-?*|--disable-?*)
3486             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3487             if is_in $option $COMPONENT_LIST; then
3488                 test $action = disable && action=unset
3489                 eval $action \$$(toupper ${option%s})_LIST
3490             elif is_in $option $CMDLINE_SELECT; then
3491                 $action $option
3492             else
3493                 die_unknown $opt
3494             fi
3495         ;;
3496         --list-*)
3497             NAME="${opt#--list-}"
3498             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3499             NAME=${NAME%s}
3500             eval show_list $NAME \$$(toupper $NAME)_LIST
3501         ;;
3502         --help|-h) show_help
3503         ;;
3504         --fatal-warnings) enable fatal_warnings
3505         ;;
3506         *)
3507             optname="${opt%%=*}"
3508             optname="${optname#--}"
3509             optname=$(echo "$optname" | sed 's/-/_/g')
3510             if is_in $optname $CMDLINE_SET; then
3511                 eval $optname='$optval'
3512             elif is_in $optname $CMDLINE_APPEND; then
3513                 append $optname "$optval"
3514             else
3515                 die_unknown $opt
3516             fi
3517         ;;
3518     esac
3519 done
3520
3521 for e in $env; do
3522     eval "export $e"
3523 done
3524
3525 # Mark specifically enabled, but normally autodetected libraries as requested.
3526 for lib in $AUTODETECT_LIBS; do
3527     enabled $lib && request $lib
3528 done
3529
3530 # Enable platform codecs by default.
3531 enable_weak audiotoolbox
3532
3533 # Enable hwaccels by default.
3534 enable_weak d3d11va dxva2 vaapi vda vdpau videotoolbox_hwaccel xvmc
3535 enable_weak xlib
3536
3537 enable_weak cuda cuvid nvenc vda_framework videotoolbox videotoolbox_encoder
3538
3539 disabled logging && logfile=/dev/null
3540
3541 # Disable all the library-specific components if the library itself
3542 # is disabled, see AVCODEC_LIST and following _LIST variables.
3543
3544 disable_components(){
3545     disabled ${1} && disable $(
3546         eval components="\$$(toupper ${1})_COMPONENTS"
3547         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3548     )
3549 }
3550
3551 map 'disable_components $v' $LIBRARY_LIST
3552
3553 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3554 set >> $logfile
3555
3556 test -n "$valgrind" && toolchain="valgrind-memcheck"
3557
3558 case "$toolchain" in
3559     *-asan)
3560         cc_default="${toolchain%-asan}"
3561         add_cflags  -fsanitize=address
3562         add_ldflags -fsanitize=address
3563     ;;
3564     *-msan)
3565         cc_default="${toolchain%-msan}"
3566         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3567         add_ldflags -fsanitize=memory
3568     ;;
3569     *-tsan)
3570         cc_default="${toolchain%-tsan}"
3571         add_cflags  -fsanitize=thread -fPIE
3572         add_ldflags -fsanitize=thread -pie
3573         case "$toolchain" in
3574             gcc-tsan)
3575                 add_cflags  -fPIC
3576                 add_ldflags -fPIC
3577                 ;;
3578         esac
3579     ;;
3580     *-usan)
3581         cc_default="${toolchain%-usan}"
3582         add_cflags  -fsanitize=undefined
3583         add_ldflags -fsanitize=undefined
3584     ;;
3585     valgrind-*)
3586         target_exec_default="valgrind"
3587         case "$toolchain" in
3588             valgrind-massif)
3589                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3590                 ;;
3591             valgrind-memcheck)
3592                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3593                 ;;
3594         esac
3595     ;;
3596     msvc)
3597         # Check whether the current MSVC version needs the C99 converter.
3598         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3599         # support enough of C99 to build ffmpeg. Default to the new
3600         # behaviour if the regexp was unable to match anything, since this
3601         # successfully parses the version number of existing supported
3602         # versions that require the converter (MSVC 2010 and 2012).
3603         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3604         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3605             cc_default="cl"
3606         else
3607             cc_default="c99wrap cl"
3608         fi
3609         ld_default="$source_path/compat/windows/mslink"
3610         nm_default="dumpbin -symbols"
3611         ar_default="lib"
3612         case "$arch" in
3613         arm*)
3614             as_default="armasm"
3615             ;;
3616         esac
3617         target_os_default="win32"
3618         # Use a relative path for TMPDIR. This makes sure all the
3619         # ffconf temp files are written with a relative path, avoiding
3620         # issues with msys/win32 path conversion for MSVC parameters
3621         # such as -Fo<file> or -out:<file>.
3622         TMPDIR=.
3623     ;;
3624     icl)
3625         cc_default="icl"
3626         ld_default="xilink"
3627         nm_default="dumpbin -symbols"
3628         ar_default="xilib"
3629         target_os_default="win32"
3630         TMPDIR=.
3631     ;;
3632     gcov)
3633         add_cflags  -fprofile-arcs -ftest-coverage
3634         add_ldflags -fprofile-arcs -ftest-coverage
3635     ;;
3636     llvm-cov)
3637         add_cflags -fprofile-arcs -ftest-coverage
3638         add_ldflags --coverage
3639     ;;
3640     hardened)
3641         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3642         add_cflags   -fno-strict-overflow -fstack-protector-all
3643         add_ldflags  -Wl,-z,relro -Wl,-z,now
3644         add_cflags   -fPIE
3645         add_ldexeflags -fPIE -pie
3646     ;;
3647     ?*)
3648         die "Unknown toolchain $toolchain"
3649     ;;
3650 esac
3651
3652 test -n "$cross_prefix" && enable cross_compile
3653
3654 if enabled cross_compile; then
3655     test -n "$arch" && test -n "$target_os" ||
3656         die "Must specify target arch and OS when cross-compiling"
3657 fi
3658
3659 ar_default="${cross_prefix}${ar_default}"
3660 cc_default="${cross_prefix}${cc_default}"
3661 cxx_default="${cross_prefix}${cxx_default}"
3662 nm_default="${cross_prefix}${nm_default}"
3663 pkg_config_default="${cross_prefix}${pkg_config_default}"
3664 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3665     ranlib_default="${cross_prefix}${ranlib_default} -D"
3666 else
3667     ranlib_default="${cross_prefix}${ranlib_default}"
3668 fi
3669 strip_default="${cross_prefix}${strip_default}"
3670 windres_default="${cross_prefix}${windres_default}"
3671
3672 sysinclude_default="${sysroot}/usr/include"
3673
3674 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3675     target_exec target_os yasmexe
3676 enabled cross_compile || host_cc_default=$cc
3677 set_default host_cc
3678
3679 pkg_config_fail_message=""
3680 if ! $pkg_config --version >/dev/null 2>&1; then
3681     warn "$pkg_config not found, library detection may fail."
3682     pkg_config=false
3683 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3684     pkg_config_fail_message="
3685 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3686 fi
3687
3688 if test $doxygen != $doxygen_default && \
3689   ! $doxygen --version >/dev/null 2>&1; then
3690     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3691 fi
3692
3693 exesuf() {
3694     case $1 in
3695         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3696     esac
3697 }
3698
3699 EXESUF=$(exesuf $target_os)
3700 HOSTEXESUF=$(exesuf $host_os)
3701
3702 # set temporary file name
3703 : ${TMPDIR:=$TEMPDIR}
3704 : ${TMPDIR:=$TMP}
3705 : ${TMPDIR:=/tmp}
3706
3707 if [ -n "$tempprefix" ] ; then
3708     mktemp(){
3709         echo $tempprefix.${HOSTNAME}.${UID}
3710     }
3711 elif ! check_cmd mktemp -u XXXXXX; then
3712     # simple replacement for missing mktemp
3713     # NOT SAFE FOR GENERAL USE
3714     mktemp(){
3715         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3716     }
3717 fi
3718
3719 tmpfile(){
3720     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3721         (set -C; exec > $tmp) 2>/dev/null ||
3722         die "Unable to create temporary file in $TMPDIR."
3723     append TMPFILES $tmp
3724     eval $1=$tmp
3725 }
3726
3727 trap 'rm -f -- $TMPFILES' EXIT
3728
3729 tmpfile TMPASM .asm
3730 tmpfile TMPC   .c
3731 tmpfile TMPCPP .cpp
3732 tmpfile TMPE   $EXESUF
3733 tmpfile TMPH   .h
3734 tmpfile TMPM   .m
3735 tmpfile TMPO   .o
3736 tmpfile TMPS   .S
3737 tmpfile TMPSH  .sh
3738 tmpfile TMPV   .ver
3739
3740 unset -f mktemp
3741
3742 chmod +x $TMPE
3743
3744 # make sure we can execute files in $TMPDIR
3745 cat > $TMPSH 2>> $logfile <<EOF
3746 #! /bin/sh
3747 EOF
3748 chmod +x $TMPSH >> $logfile 2>&1
3749 if ! $TMPSH >> $logfile 2>&1; then
3750     cat <<EOF
3751 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3752 variable to another directory and make sure that it is not mounted noexec.
3753 EOF
3754     die "Sanity test failed."
3755 fi
3756
3757 armasm_flags(){
3758     for flag; do
3759         case $flag in
3760             # Filter out MSVC cl.exe options from cflags that shouldn't
3761             # be passed to gas-preprocessor
3762             -M[TD]*)                                            ;;
3763             *)                  echo $flag                      ;;
3764         esac
3765    done
3766 }
3767
3768 ccc_flags(){
3769     for flag; do
3770         case $flag in
3771             -std=c99)           echo -c99                       ;;
3772             -mcpu=*)            echo -arch ${flag#*=}           ;;
3773             -mieee)             echo -ieee                      ;;
3774             -O*|-fast)          echo $flag                      ;;
3775             -fno-math-errno)    echo -assume nomath_errno       ;;
3776             -g)                 echo -g3                        ;;
3777             -Wall)              echo -msg_enable level2         ;;
3778             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3779             -Wl,*)              echo $flag                      ;;
3780             -f*|-W*)                                            ;;
3781             *)                  echo $flag                      ;;
3782         esac
3783    done
3784 }
3785
3786 cparser_flags(){
3787     for flag; do
3788         case $flag in
3789             -Wno-switch)             echo -Wno-switch-enum ;;
3790             -Wno-format-zero-length) ;;
3791             -Wdisabled-optimization) ;;
3792             -Wno-pointer-sign)       echo -Wno-other ;;
3793             *)                       echo $flag ;;
3794         esac
3795     done
3796 }
3797
3798 msvc_common_flags(){
3799     for flag; do
3800         case $flag in
3801             # In addition to specifying certain flags under the compiler
3802             # specific filters, they must be specified here as well or else the
3803             # generic catch all at the bottom will print the original flag.
3804             -Wall)                ;;
3805             -std=c99)             ;;
3806             # Common flags
3807             -fomit-frame-pointer) ;;
3808             -g)                   echo -Z7 ;;
3809             -fno-math-errno)      ;;
3810             -fno-common)          ;;
3811             -fno-signed-zeros)    ;;
3812             -fPIC)                ;;
3813             -mthumb)              ;;
3814             -march=*)             ;;
3815             -lz)                  echo zlib.lib ;;
3816             -lavifil32)           echo vfw32.lib ;;
3817             -lavicap32)           echo vfw32.lib user32.lib ;;
3818             -lx264)               echo libx264.lib ;;
3819             -l*)                  echo ${flag#-l}.lib ;;
3820             -LARGEADDRESSAWARE)   echo $flag ;;
3821             -L*)                  echo -libpath:${flag#-L} ;;
3822             *)                    echo $flag ;;
3823         esac
3824     done
3825 }
3826
3827 msvc_flags(){
3828     msvc_common_flags "$@"
3829     for flag; do
3830         case $flag in
3831             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3832                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3833                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3834                                        -wd4307 \
3835                                        -wd4273 -wd4554 -wd4701 ;;
3836         esac
3837     done
3838 }
3839
3840 icl_flags(){
3841     msvc_common_flags "$@"
3842     for flag; do
3843         case $flag in
3844             # Despite what Intel's documentation says -Wall, which is supported
3845             # on Windows, does enable remarks so disable them here.
3846             -Wall)                echo $flag -Qdiag-disable:remark ;;
3847             -std=c99)             echo -Qstd=c99 ;;
3848             -flto)                echo -ipo ;;
3849         esac
3850     done
3851 }
3852
3853 icc_flags(){
3854     for flag; do
3855         case $flag in
3856             -flto)                echo -ipo ;;
3857             *)                    echo $flag ;;
3858         esac
3859     done
3860 }
3861
3862 pgi_flags(){
3863     for flag; do
3864         case $flag in
3865             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3866             -fomit-frame-pointer) echo -Mnoframe ;;
3867             -g)                   echo -gopt ;;
3868             *)                    echo $flag ;;
3869         esac
3870     done
3871 }
3872
3873 suncc_flags(){
3874     for flag; do
3875         case $flag in
3876             -march=*|-mcpu=*)
3877                 case "${flag#*=}" in
3878                     native)                   echo -xtarget=native       ;;
3879                     v9|niagara)               echo -xarch=sparc          ;;
3880                     ultrasparc)               echo -xarch=sparcvis       ;;
3881                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3882                     i586|pentium)             echo -xchip=pentium        ;;
3883                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3884                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3885                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3886                     pentium4*)          echo -xtarget=pentium4           ;;
3887                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3888                     *-sse3)             echo -xarch=sse3                 ;;
3889                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3890                     bonnell)                   echo -xarch=ssse3         ;;
3891                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3892                     westmere)                  echo -xtarget=westmere    ;;
3893                     silvermont)                echo -xarch=sse4_2        ;;
3894                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3895                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
3896                                                echo -xarch=avx           ;;
3897                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3898                     btver1)                    echo -xarch=amdsse4a      ;;
3899                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
3900                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3901                     k8|opteron|athlon64|athlon-fx)
3902                                                echo -xarch=sse2a         ;;
3903                     athlon*)                   echo -xarch=pentium_proa  ;;
3904                 esac
3905                 ;;
3906             -std=c99)             echo -xc99              ;;
3907             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3908             -fPIC)                echo -KPIC -xcode=pic32 ;;
3909             -W*,*)                echo $flag              ;;
3910             -f*-*|-W*|-mimpure-text)                      ;;
3911             -shared)              echo -G                 ;;
3912             *)                    echo $flag              ;;
3913         esac
3914     done
3915 }
3916
3917 tms470_flags(){
3918     for flag; do
3919         case $flag in
3920             -march=*|-mcpu=*)
3921                 case "${flag#*=}" in
3922                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3923                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3924                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3925                     armv6*|arm11*)          echo -mv=6   ;;
3926                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3927                                             echo -mv=5e  ;;
3928                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3929                 esac
3930                 ;;
3931             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3932             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3933             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3934             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3935             -msoft-float)   echo --float_support=vfplib       ;;
3936             -O[0-3]|-mf=*)  echo $flag                        ;;
3937             -g)             echo -g -mn                       ;;
3938             -pds=*)         echo $flag                        ;;
3939             -D*|-I*)        echo $flag                        ;;
3940             --gcc|--abi=*)  echo $flag                        ;;
3941             -me)            echo $flag                        ;;
3942         esac
3943     done
3944 }
3945
3946 probe_cc(){
3947     pfx=$1
3948     _cc=$2
3949     first=$3
3950
3951     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3952     unset _ld_o _ldflags _ld_lib _ld_path
3953     unset _depflags _DEPCMD _DEPFLAGS
3954     _flags_filter=echo
3955
3956     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3957         true # no-op to avoid reading stdin in following checks
3958     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3959         _type=llvm_gcc
3960         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3961         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3962         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3963         _cflags_speed='-O3'
3964         _cflags_size='-Os'
3965     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3966         _type=gcc
3967         gcc_version=$($_cc --version | head -n1)
3968         gcc_basever=$($_cc -dumpversion)
3969         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3970         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3971         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3972         case $gcc_basever in
3973             2) ;;
3974             2.*) ;;
3975             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
3976         esac
3977         if [ "$first" = true ]; then
3978             case $gcc_basever in
3979                 4.2*)
3980                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
3981             esac
3982         fi
3983         _cflags_speed='-O3'
3984         _cflags_size='-Os'
3985     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3986         _type=icc
3987         _ident=$($_cc --version | head -n1)
3988         _depflags='-MMD'
3989         _cflags_speed='-O3'
3990         _cflags_size='-Os'
3991         _cflags_noopt='-O1'
3992         _flags_filter=icc_flags
3993     elif $_cc -v 2>&1 | grep -q xlc; then
3994         _type=xlc
3995         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3996         _cflags_speed='-O5'
3997         _cflags_size='-O5 -qcompact'
3998     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3999         _type=ccc
4000         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
4001         _DEPFLAGS='-M'
4002         _cflags_speed='-fast'
4003         _cflags_size='-O1'
4004         _flags_filter=ccc_flags
4005     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4006         test -d "$sysroot" || die "No valid sysroot specified."
4007         _type=armcc
4008         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4009         armcc_conf="$PWD/armcc.conf"
4010         $_cc --arm_linux_configure                 \
4011              --arm_linux_config_file="$armcc_conf" \
4012              --configure_sysroot="$sysroot"        \
4013              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4014              die "Error creating armcc configuration file."
4015         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4016         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4017         as_default="${cross_prefix}gcc"
4018         _depflags='-MMD'
4019         _cflags_speed='-O3'
4020         _cflags_size='-Os'
4021     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
4022         _type=tms470
4023         _ident=$($_cc -version | head -n1 | tr -s ' ')
4024         _flags='--gcc --abi=eabi -me'
4025         _cc_e='-ppl -fe=$@'
4026         _cc_o='-fe=$@'
4027         _depflags='-ppa -ppd=$(@:.o=.d)'
4028         _cflags_speed='-O3 -mf=5'
4029         _cflags_size='-O3 -mf=2'
4030         _flags_filter=tms470_flags
4031     elif $_cc -v 2>&1 | grep -q clang; then
4032         _type=clang
4033         _ident=$($_cc --version 2>/dev/null | head -n1)
4034         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4035         _cflags_speed='-O3'
4036         _cflags_size='-Oz'
4037     elif $_cc -V 2>&1 | grep -q Sun; then
4038         _type=suncc
4039         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4040         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4041         _DEPFLAGS='-xM1 -xc99'
4042         _ldflags='-std=c99'
4043         _cflags_speed='-O5'
4044         _cflags_size='-O5 -xspace'
4045         _flags_filter=suncc_flags
4046     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4047         _type=pathscale
4048         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4049         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4050         _cflags_speed='-O2'
4051         _cflags_size='-Os'
4052         _flags_filter='filter_out -Wdisabled-optimization'
4053     elif $_cc -v 2>&1 | grep -q Open64; then
4054         _type=open64
4055         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4056         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4057         _cflags_speed='-O2'
4058         _cflags_size='-Os'
4059         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4060     elif $_cc -V 2>&1 | grep -q Portland; then
4061         _type=pgi
4062         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
4063         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
4064         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
4065         _cflags_size="-O2 -Munroll=c:1 $opt_common"
4066         _cflags_noopt="-O"
4067         _flags_filter=pgi_flags
4068     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4069         _type=armasm
4070         _ident=$($_cc | head -n1)
4071         # 4509: "This form of conditional instruction is deprecated"
4072         _flags="-nologo -ignore 4509"
4073         _flags_filter=armasm_flags
4074     elif $_cc 2>&1 | grep -q Intel; then
4075         _type=icl
4076         _ident=$($_cc 2>&1 | head -n1)
4077         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4078         # Not only is O3 broken on 13.x+ but it is slower on all previous
4079         # versions (tested) as well.
4080         _cflags_speed="-O2"
4081         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4082         if $_cc 2>&1 | grep -q Linker; then
4083             _ld_o='-out:$@'
4084         else
4085             _ld_o='-Fe$@'
4086         fi
4087         _cc_o='-Fo$@'
4088         _cc_e='-P'
4089         _flags_filter=icl_flags
4090         _ld_lib='lib%.a'
4091         _ld_path='-libpath:'
4092         # -Qdiag-error to make icl error when seeing certain unknown arguments
4093         _flags='-nologo -Qdiag-error:4044,10157'
4094         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4095         # with MSVC which enables it by default.
4096         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4097         disable stripping
4098     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4099         # lld can emulate multiple different linkers; in ms link.exe mode,
4100         # the -? parameter gives the help output which contains an identifyable
4101         # string, while it gives an error in other modes.
4102         _type=lld-link
4103         # The link.exe mode doesn't have a switch for getting the version,
4104         # but we can force it back to gnu mode and get the version from there.
4105         _ident=$($_cc -flavor gnu --version)
4106         _ld_o='-out:$@'
4107         _flags_filter=msvc_flags
4108         _ld_lib='lib%.a'
4109         _ld_path='-libpath:'
4110     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4111         _type=msvc
4112         _ident=$($_cc 2>&1 | head -n1)
4113         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4114         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4115         _cflags_speed="-O2"
4116         _cflags_size="-O1"
4117         if $_cc -nologo- 2>&1 | grep -q Linker; then
4118             _ld_o='-out:$@'
4119         else
4120             _ld_o='-Fe$@'
4121         fi
4122         _cc_o='-Fo$@'
4123         _cc_e='-P -Fi$@'
4124         _flags_filter=msvc_flags
4125         _ld_lib='lib%.a'
4126         _ld_path='-libpath:'
4127         _flags='-nologo'
4128         disable stripping
4129     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4130         _type=cparser
4131         _ident=$($_cc --version | head -n1)
4132         _depflags='-MMD'
4133         _cflags_speed='-O4'
4134         _cflags_size='-O2'
4135         _flags_filter=cparser_flags
4136     fi
4137
4138     eval ${pfx}_type=\$_type
4139     eval ${pfx}_ident=\$_ident
4140 }
4141
4142 set_ccvars(){
4143     eval ${1}_C=\${_cc_c-\${${1}_C}}
4144     eval ${1}_E=\${_cc_e-\${${1}_E}}
4145     eval ${1}_O=\${_cc_o-\${${1}_O}}
4146
4147     if [ -n "$_depflags" ]; then
4148         eval ${1}_DEPFLAGS=\$_depflags
4149     else
4150         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4151         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4152         eval DEP${1}FLAGS=\$_flags
4153     fi
4154 }
4155
4156 probe_cc cc "$cc" "true"
4157 cflags_filter=$_flags_filter
4158 cflags_speed=$_cflags_speed
4159 cflags_size=$_cflags_size
4160 cflags_noopt=$_cflags_noopt
4161 add_cflags $_flags $_cflags
4162 cc_ldflags=$_ldflags
4163 set_ccvars CC
4164
4165 probe_cc hostcc "$host_cc"
4166 host_cflags_filter=$_flags_filter
4167 add_host_cflags  $_flags $_cflags
4168 set_ccvars HOSTCC
4169
4170 test -n "$cc_type" && enable $cc_type ||
4171     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4172
4173 : ${as_default:=$cc}
4174 : ${objcc_default:=$cc}
4175 : ${dep_cc_default:=$cc}
4176 : ${ld_default:=$cc}
4177 : ${host_ld_default:=$host_cc}
4178 set_default ar as objcc dep_cc ld ln_s host_ld windres
4179
4180 probe_cc as "$as"
4181 asflags_filter=$_flags_filter
4182 add_asflags $_flags $_cflags
4183 set_ccvars AS
4184
4185 probe_cc objcc "$objcc"
4186 objcflags_filter=$_flags_filter
4187 add_objcflags $_flags $_cflags
4188 set_ccvars OBJC
4189
4190 probe_cc ld "$ld"
4191 ldflags_filter=$_flags_filter
4192 add_ldflags $_flags $_ldflags
4193 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4194 LD_O=${_ld_o-$LD_O}
4195 LD_LIB=${_ld_lib-$LD_LIB}
4196 LD_PATH=${_ld_path-$LD_PATH}
4197
4198 probe_cc hostld "$host_ld"
4199 host_ldflags_filter=$_flags_filter
4200 add_host_ldflags $_flags $_ldflags
4201 HOSTLD_O=${_ld_o-$HOSTLD_O}
4202
4203 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4204     probe_cc depcc "$dep_cc"
4205     CCDEP=${_DEPCMD:-$DEPCMD}
4206     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4207     DEPCCFLAGS=$_flags
4208 fi
4209
4210 if $ar 2>&1 | grep -q Microsoft; then
4211     arflags="-nologo"
4212     ar_o='-out:$@'
4213 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
4214     arflags="rq"
4215     ar_o='$@'
4216 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
4217     arflags='-Xany -r -c'
4218     ar_o='$@'
4219 elif $ar 2>&1 | grep -q "\[D\] "; then
4220     arflags="rcD"
4221     ar_o='$@'
4222 else
4223     arflags="rc"
4224     ar_o='$@'
4225 fi
4226
4227 add_cflags $extra_cflags
4228 add_cxxflags $extra_cxxflags
4229 add_objcflags $extra_objcflags
4230 add_asflags $extra_cflags
4231
4232 if test -n "$sysroot"; then
4233     case "$cc_type" in
4234         gcc|llvm_gcc|clang)
4235             add_cppflags --sysroot="$sysroot"
4236             add_ldflags --sysroot="$sysroot"
4237 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
4238             add_cppflags -isysroot "$sysroot"
4239             add_ldflags -isysroot "$sysroot"
4240         ;;
4241         tms470)
4242             add_cppflags -I"$sysinclude"
4243             add_ldflags  --sysroot="$sysroot"
4244         ;;
4245     esac
4246 fi
4247
4248 if test "$cpu" = host; then
4249     enabled cross_compile &&
4250         die "--cpu=host makes no sense when cross-compiling."
4251
4252     case "$cc_type" in
4253         gcc|llvm_gcc)
4254             check_native(){
4255                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4256                 sed -n "/cc1.*$1=/{
4257                             s/.*$1=\\([^ ]*\\).*/\\1/
4258                             p
4259                             q
4260                         }" $TMPE
4261             }
4262             cpu=$(check_native -march || check_native -mcpu)
4263         ;;
4264         clang)
4265             check_native(){
4266                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4267                 sed -n "/cc1.*-target-cpu /{
4268                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4269                             p
4270                             q
4271                         }" $TMPE
4272             }
4273             cpu=$(check_native -march)
4274         ;;
4275     esac
4276
4277     test "${cpu:-host}" = host &&
4278         die "--cpu=host not supported with compiler $cc"
4279 fi
4280
4281 # Deal with common $arch aliases
4282 case "$arch" in
4283     aarch64|arm64)
4284         arch="aarch64"
4285     ;;
4286     arm*|iPad*|iPhone*)
4287         arch="arm"
4288     ;;
4289     mips*|IP*)
4290         case "$arch" in
4291         *el)
4292             add_cppflags -EL
4293             add_ldflags -EL
4294         ;;
4295         *eb)
4296             add_cppflags -EB
4297             add_ldflags -EB
4298         ;;
4299         esac
4300         arch="mips"
4301     ;;
4302     parisc*|hppa*)
4303         arch="parisc"
4304     ;;
4305     "Power Macintosh"|ppc*|powerpc*)
4306         arch="ppc"
4307     ;;
4308     s390|s390x)
4309         arch="s390"
4310     ;;
4311     sh4|sh)
4312         arch="sh4"
4313     ;;
4314     sun4*|sparc*)
4315         arch="sparc"
4316     ;;
4317     tilegx|tile-gx)
4318         arch="tilegx"
4319     ;;
4320     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4321         arch="x86"
4322     ;;
4323 esac
4324
4325 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4326 enable $arch
4327
4328 # Add processor-specific flags
4329 if enabled aarch64; then
4330
4331     case $cpu in
4332         armv*)
4333             cpuflags="-march=$cpu"
4334         ;;
4335         *)
4336             cpuflags="-mcpu=$cpu"
4337         ;;
4338     esac
4339
4340 elif enabled alpha; then
4341
4342     cpuflags="-mcpu=$cpu"
4343
4344 elif enabled arm; then
4345
4346     check_arm_arch() {
4347         check_cpp_condition stddef.h \
4348             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4349             $cpuflags
4350     }
4351
4352     probe_arm_arch() {
4353         if   check_arm_arch 4;        then echo armv4
4354         elif check_arm_arch 4T;       then echo armv4t
4355         elif check_arm_arch 5;        then echo armv5
4356         elif check_arm_arch 5E;       then echo armv5e
4357         elif check_arm_arch 5T;       then echo armv5t
4358         elif check_arm_arch 5TE;      then echo armv5te
4359         elif check_arm_arch 5TEJ;     then echo armv5te
4360         elif check_arm_arch 6;        then echo armv6
4361         elif check_arm_arch 6J;       then echo armv6j
4362         elif check_arm_arch 6K;       then echo armv6k
4363         elif check_arm_arch 6Z;       then echo armv6z
4364         elif check_arm_arch 6ZK;      then echo armv6zk
4365         elif check_arm_arch 6T2;      then echo armv6t2
4366         elif check_arm_arch 7;        then echo armv7
4367         elif check_arm_arch 7A  7_A;  then echo armv7-a
4368         elif check_arm_arch 7S;       then echo armv7-a
4369         elif check_arm_arch 7R  7_R;  then echo armv7-r
4370         elif check_arm_arch 7M  7_M;  then echo armv7-m
4371         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4372         elif check_arm_arch 8A  8_A;  then echo armv8-a
4373         fi
4374     }
4375
4376     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4377
4378     case $cpu in
4379         armv*)
4380             cpuflags="-march=$cpu"
4381             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4382         ;;
4383         *)
4384             cpuflags="-mcpu=$cpu"
4385             case $cpu in
4386                 cortex-a*)                               subarch=armv7a  ;;
4387                 cortex-r*)                               subarch=armv7r  ;;
4388                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4389                 arm11*)                                  subarch=armv6   ;;
4390                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4391                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4392                 *)                             subarch=$(probe_arm_arch) ;;
4393             esac
4394         ;;
4395     esac
4396
4397     case "$subarch" in
4398         armv5t*)    enable fast_clz                ;;
4399         armv[6-8]*)
4400             enable fast_clz
4401             disabled fast_unaligned || enable fast_unaligned
4402             ;;
4403     esac
4404
4405 elif enabled avr32; then
4406
4407     case $cpu in
4408         ap7[02]0[0-2])
4409             subarch="avr32_ap"
4410             cpuflags="-mpart=$cpu"
4411         ;;
4412         ap)
4413             subarch="avr32_ap"
4414             cpuflags="-march=$cpu"
4415         ;;
4416         uc3[ab]*)
4417             subarch="avr32_uc"
4418             cpuflags="-mcpu=$cpu"
4419         ;;
4420         uc)
4421             subarch="avr32_uc"
4422             cpuflags="-march=$cpu"
4423         ;;
4424     esac
4425
4426 elif enabled bfin; then
4427
4428     cpuflags="-mcpu=$cpu"
4429
4430 elif enabled mips; then
4431
4432     cpuflags="-march=$cpu"
4433
4434     if [ "$cpu" != "generic" ]; then
4435         disable mips32r2
4436         disable mips32r5
4437         disable mips64r2
4438         disable mips32r6
4439         disable mips64r6
4440         disable loongson2
4441         disable loongson3
4442
4443         case $cpu in
4444             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4445                 enable mips32r2
4446                 disable msa
4447             ;;
4448             p5600|i6400|p6600)
4449                 disable mipsdsp
4450                 disable mipsdspr2
4451             ;;
4452             loongson*)
4453                 enable loongson2
4454                 enable loongson3
4455                 enable local_aligned_8 local_aligned_16 local_aligned_32
4456                 enable simd_align_16
4457                 enable fast_64bit
4458                 enable fast_clz
4459                 enable fast_cmov
4460                 enable fast_unaligned
4461                 disable aligned_stack
4462                 disable mipsfpu
4463                 disable mipsdsp
4464                 disable mipsdspr2
4465                 case $cpu in
4466                     loongson3*)
4467                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4468                     ;;
4469                     loongson2e)
4470                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4471                     ;;
4472                     loongson2f)
4473                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4474                     ;;
4475                 esac
4476             ;;
4477             *)
4478                 # Unknown CPU. Disable everything.
4479                 warn "unknown CPU. Disabling all MIPS optimizations."
4480                 disable mipsfpu
4481                 disable mipsdsp
4482                 disable mipsdspr2
4483                 disable msa
4484                 disable mmi
4485             ;;
4486         esac
4487
4488         case $cpu in
4489             24kc)
4490                 disable mipsfpu
4491                 disable mipsdsp
4492                 disable mipsdspr2
4493             ;;
4494             24kf*)
4495                 disable mipsdsp
4496                 disable mipsdspr2
4497             ;;
4498             24kec|34kc|1004kc)
4499                 disable mipsfpu
4500                 disable mipsdspr2
4501             ;;
4502             24kef*|34kf*|1004kf*)
4503                 disable mipsdspr2
4504             ;;
4505             74kc)
4506                 disable mipsfpu
4507             ;;
4508             p5600)
4509                 enable mips32r5
4510                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4511             ;;
4512             i6400)
4513                 enable mips64r6
4514                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4515             ;;
4516             p6600)
4517                 enable mips64r6
4518                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4519             ;;
4520         esac
4521     else
4522         # We do not disable anything. Is up to the user to disable the unwanted features.
4523         warn 'generic cpu selected'
4524     fi
4525
4526 elif enabled ppc; then
4527
4528     disable ldbrx
4529
4530     case $(tolower $cpu) in
4531         601|ppc601|powerpc601)
4532             cpuflags="-mcpu=601"
4533             disable altivec
4534         ;;
4535         603*|ppc603*|powerpc603*)
4536             cpuflags="-mcpu=603"
4537             disable altivec
4538         ;;
4539         604*|ppc604*|powerpc604*)
4540             cpuflags="-mcpu=604"
4541             disable altivec
4542         ;;
4543         g3|75*|ppc75*|powerpc75*)
4544             cpuflags="-mcpu=750"
4545             disable altivec
4546         ;;
4547         g4|745*|ppc745*|powerpc745*)
4548             cpuflags="-mcpu=7450"
4549             disable vsx
4550         ;;
4551         74*|ppc74*|powerpc74*)
4552             cpuflags="-mcpu=7400"
4553             disable vsx
4554         ;;
4555         g5|970|ppc970|powerpc970)
4556             cpuflags="-mcpu=970"
4557             disable vsx
4558         ;;
4559         power[3-6]*)
4560             cpuflags="-mcpu=$cpu"
4561             disable vsx
4562         ;;
4563         power[7-8]*)
4564             cpuflags="-mcpu=$cpu"
4565         ;;
4566         cell)
4567             cpuflags="-mcpu=cell"
4568             enable ldbrx
4569             disable vsx
4570         ;;
4571         e500mc)
4572             cpuflags="-mcpu=e500mc"
4573             disable altivec
4574         ;;
4575         e500v2)
4576             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4577             disable altivec
4578             disable dcbzl
4579         ;;
4580         e500)
4581             cpuflags="-mcpu=8540 -mhard-float"
4582             disable altivec
4583             disable dcbzl
4584         ;;
4585     esac
4586
4587 elif enabled sparc; then
4588
4589     case $cpu in
4590         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4591             cpuflags="-mcpu=$cpu"
4592         ;;
4593         ultrasparc*|niagara[234])
4594             cpuflags="-mcpu=$cpu"
4595         ;;
4596     esac
4597
4598 elif enabled x86; then
4599
4600     case $cpu in
4601         i[345]86|pentium)
4602             cpuflags="-march=$cpu"
4603             disable i686
4604             disable mmx
4605         ;;
4606         # targets that do NOT support nopl and conditional mov (cmov)
4607         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4608             cpuflags="-march=$cpu"
4609             disable i686
4610         ;;
4611         # targets that do support nopl and conditional mov (cmov)
4612         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4613         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4614         |amdfam10|barcelona|b[dt]ver*|znver*)
4615             cpuflags="-march=$cpu"
4616             enable i686
4617             enable fast_cmov
4618         ;;
4619         # targets that do support conditional mov but on which it's slow
4620         pentium4|pentium4m|prescott|nocona)
4621             cpuflags="-march=$cpu"
4622             enable i686
4623             disable fast_cmov
4624         ;;
4625     esac
4626
4627 fi
4628
4629 if [ "$cpu" != generic ]; then
4630     add_cflags  $cpuflags
4631     add_asflags $cpuflags
4632     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4633 fi
4634
4635 # compiler sanity check
4636 check_exec <<EOF
4637 int main(void){ return 0; }
4638 EOF
4639 if test "$?" != 0; then
4640     echo "$cc is unable to create an executable file."
4641     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4642         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4643         echo "Only do this if you know what cross compiling means."
4644     fi
4645     die "C compiler test failed."
4646 fi
4647
4648 add_cppflags -D_ISOC99_SOURCE
4649 add_cxxflags -D__STDC_CONSTANT_MACROS
4650 add_cxxflags -std=c++98
4651
4652 # some compilers silently accept -std=c11, so we also need to check that the
4653 # version macro is defined properly
4654 if test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L"; then
4655     add_cflags -std=c11
4656 else
4657     check_cflags -std=c99
4658 fi
4659
4660 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4661 #include <stdlib.h>
4662 EOF
4663 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4664 #include <stdlib.h>
4665 EOF
4666
4667 add_host_cppflags -D_ISOC99_SOURCE
4668 check_host_cflags -std=c99
4669 check_host_cflags -Wall
4670 check_host_cflags -O3
4671
4672 check_64bit(){
4673     arch32=$1
4674     arch64=$2
4675     expr=$3
4676     check_code cc "" "int test[2*($expr) - 1]" &&
4677         subarch=$arch64 || subarch=$arch32
4678 }
4679
4680 case "$arch" in
4681     aarch64|alpha|ia64)
4682         spic=$shared
4683     ;;
4684     mips)
4685         check_64bit mips mips64 '_MIPS_SIM > 1'
4686         spic=$shared
4687     ;;
4688     parisc)
4689         check_64bit parisc parisc64 'sizeof(void *) > 4'
4690         spic=$shared
4691     ;;
4692     ppc)
4693         check_64bit ppc ppc64 'sizeof(void *) > 4'
4694         spic=$shared
4695     ;;
4696     s390)
4697         check_64bit s390 s390x 'sizeof(void *) > 4'
4698         spic=$shared
4699     ;;
4700     sparc)
4701         check_64bit sparc sparc64 'sizeof(void *) > 4'
4702         spic=$shared
4703     ;;
4704     x86)
4705         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4706         # Treat x32 as x64 for now. Note it also needs spic=$shared
4707         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4708             subarch=x86_64
4709         if test "$subarch" = "x86_64"; then
4710             spic=$shared
4711         fi
4712     ;;
4713     ppc)
4714         check_cc <<EOF && subarch="ppc64"
4715         int test[(int)sizeof(char*) - 7];
4716 EOF
4717     ;;
4718 esac
4719
4720 enable $subarch
4721 enabled spic && enable_weak pic
4722
4723 # OS specific
4724 case $target_os in
4725     aix)
4726         SHFLAGS=-shared
4727         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4728         enabled shared && add_ldflags -Wl,-brtl
4729         ;;
4730     android)
4731         disable symver
4732         enable section_data_rel_ro
4733         SLIB_INSTALL_NAME='$(SLIBNAME)'
4734         SLIB_INSTALL_LINKS=
4735         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4736         ;;
4737     haiku)
4738         prefix_default="/boot/common"
4739         network_extralibs="-lnetwork"
4740         host_libs=
4741         ;;
4742     sunos)
4743         SHFLAGS='-shared -Wl,-h,$$(@F)'
4744         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4745         network_extralibs="-lsocket -lnsl"
4746         add_cppflags -D__EXTENSIONS__
4747         # When using suncc to build, the Solaris linker will mark
4748         # an executable with each instruction set encountered by
4749         # the Solaris assembler.  As our libraries contain their own
4750         # guards for processor-specific code, instead suppress
4751         # generation of the HWCAPS ELF section on Solaris x86 only.
4752         enabled_all suncc x86 &&
4753             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4754             add_ldflags -Wl,-M,mapfile
4755         nm_default='nm -P -g'
4756         version_script='-M'
4757         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
4758         ;;
4759     netbsd)
4760         disable symver
4761         oss_indev_extralibs="-lossaudio"
4762         oss_outdev_extralibs="-lossaudio"
4763         enabled gcc || check_ldflags -Wl,-zmuldefs
4764         ;;
4765     openbsd|bitrig)
4766         disable symver
4767         SHFLAGS='-shared'
4768         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4769         SLIB_INSTALL_LINKS=
4770         oss_indev_extralibs="-lossaudio"
4771         oss_outdev_extralibs="-lossaudio"
4772         ;;
4773     dragonfly)
4774         disable symver
4775         ;;
4776     freebsd)
4777         ;;
4778     bsd/os)
4779         add_extralibs -lpoll -lgnugetopt
4780         strip="strip -d"
4781         ;;
4782     darwin)
4783         enabled ppc && add_asflags -force_cpusubtype_ALL
4784         install_name_dir_default='$(SHLIBDIR)'
4785         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4786         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4787         strip="${strip} -x"
4788         add_ldflags -Wl,-dynamic,-search_paths_first
4789         SLIBSUF=".dylib"
4790         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4791         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4792         objformat="macho"
4793         enabled x86_64 && objformat="macho64"
4794         enabled_any pic shared x86_64 ||
4795             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4796         check_header dispatch/dispatch.h &&
4797             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
4798         version_script='-exported_symbols_list'
4799         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
4800         ;;
4801     msys*)
4802         die "Native MSYS builds are discouraged, please use the MINGW environment."
4803         ;;
4804     mingw32*|mingw64*)
4805         if test $target_os = "mingw32ce"; then
4806             disable network
4807         else
4808             target_os=mingw32
4809         fi
4810         decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
4811         decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
4812         LIBTARGET=i386
4813         if enabled x86_64; then
4814             LIBTARGET="i386:x86-64"
4815         elif enabled arm; then
4816             LIBTARGET=arm-wince
4817         fi
4818         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4819         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4820         shlibdir_default="$bindir_default"
4821         SLIBPREF=""
4822         SLIBSUF=".dll"
4823         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4824         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4825         dlltool="${cross_prefix}dlltool"
4826         if check_cmd lib.exe -list; then
4827             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4828             if enabled x86_64; then
4829                 LIBTARGET=x64
4830             fi
4831         elif check_cmd $dlltool --version; then
4832             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4833         fi
4834         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4835         SLIB_INSTALL_LINKS=
4836         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4837         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4838         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--disable-auto-image-base'
4839         objformat="win32"
4840         ranlib=:
4841         enable dos_paths
4842         check_ldflags -Wl,--nxcompat,--dynamicbase
4843         # Lets work around some stupidity in binutils.
4844         # ld will strip relocations from executables even though we need them
4845         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4846         # however ld then forgets what the entry point should be (oops) so we
4847         # have to manually (re)set it.
4848         if enabled x86_32; then
4849             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
4850         elif enabled x86_64; then
4851             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
4852             check_ldflags -Wl,--high-entropy-va # binutils 2.25
4853             # Set image base >4GB for extra entropy with HEASLR
4854             add_ldexeflags -Wl,--image-base,0x140000000
4855             append SHFLAGS -Wl,--image-base,0x180000000
4856         fi
4857         ;;
4858     win32|win64)
4859         disable symver
4860         if enabled shared; then
4861             # Link to the import library instead of the normal static library
4862             # for shared libs.
4863             LD_LIB='%.lib'
4864             # Cannot build both shared and static libs with MSVC or icl.
4865             disable static
4866         fi
4867         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4868         shlibdir_default="$bindir_default"
4869         SLIBPREF=""
4870         SLIBSUF=".dll"
4871         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4872         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4873         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4874         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4875         SLIB_INSTALL_LINKS=
4876         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4877         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4878         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4879         objformat="win32"
4880         ranlib=:
4881         enable dos_paths
4882         ;;
4883     cygwin*)
4884         target_os=cygwin
4885         shlibdir_default="$bindir_default"
4886         SLIBPREF="cyg"
4887         SLIBSUF=".dll"
4888         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4889         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4890         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4891         SLIB_INSTALL_LINKS=
4892         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4893         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4894         objformat="win32"
4895         enable dos_paths
4896         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4897         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4898         ;;
4899     *-dos|freedos|opendos)
4900         network_extralibs="-lsocket"
4901         objformat="coff"
4902         enable dos_paths
4903         add_cppflags -U__STRICT_ANSI__
4904         ;;
4905     linux)
4906         enable dv1394
4907         enable section_data_rel_ro
4908         ;;
4909     irix*)
4910         target_os=irix
4911         ranlib="echo ignoring ranlib"
4912         ;;
4913     os/2*)
4914         strip="lxlite -CS"
4915         objformat="aout"
4916         add_cppflags -D_GNU_SOURCE
4917         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4918         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4919         LIBSUF="_s.a"
4920         SLIBPREF=""
4921         SLIBSUF=".dll"
4922         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4923         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4924         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
4925             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
4926             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
4927             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
4928             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
4929         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
4930             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
4931         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4932         SLIB_INSTALL_LINKS=
4933         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
4934         enable dos_paths
4935         enable_weak os2threads
4936         ;;
4937     gnu/kfreebsd)
4938         add_cppflags -D_BSD_SOURCE
4939         ;;
4940     gnu)
4941         ;;
4942     qnx)
4943         add_cppflags -D_QNX_SOURCE
4944         network_extralibs="-lsocket"
4945         ;;
4946     symbian)
4947         SLIBSUF=".dll"
4948         enable dos_paths
4949         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4950         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4951         add_ldflags -Wl,--target1-abs,--no-undefined \
4952                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4953                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4954         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4955                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4956                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4957         ;;
4958     osf1)
4959         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4960         ;;
4961     minix)
4962         ;;
4963     plan9)
4964         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4965                      -D_REENTRANT_SOURCE        \
4966                      -D_RESEARCH_SOURCE         \
4967                      -DFD_SETSIZE=96            \
4968                      -DHAVE_SOCK_OPTS
4969         add_compat strtod.o strtod=avpriv_strtod
4970         network_extralibs='-lbsd'
4971         exeobjs=compat/plan9/main.o
4972         disable ffserver
4973         cp_f='cp'
4974         ;;
4975     none)
4976         ;;
4977     *)
4978         die "Unknown OS '$target_os'."
4979         ;;
4980 esac
4981
4982 # test if creating links works
4983 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
4984 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
4985 mkdir "$link_dest"
4986 $ln_s "$link_dest" "$link_name"
4987 touch "$link_dest/test_file"
4988 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
4989     # create link to source path
4990     [ -e src ] && rm src
4991     $ln_s "$source_path" src
4992     source_link=src
4993 else
4994     # creating directory links doesn't work
4995     # fall back to using the full source path
4996     source_link="$source_path"
4997 fi
4998 # cleanup
4999 rm -r "$link_dest"
5000 rm -r "$link_name"
5001
5002 # determine libc flavour
5003
5004 probe_libc(){
5005     pfx=$1
5006     pfx_no_=${pfx%_}
5007     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5008     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5009         eval ${pfx}libc_type=uclibc
5010         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5011     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5012         eval ${pfx}libc_type=glibc
5013         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5014     # MinGW headers can be installed on Cygwin, so check for newlib first.
5015     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5016         eval ${pfx}libc_type=newlib
5017         add_${pfx}cppflags -U__STRICT_ANSI__
5018     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5019     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5020         eval ${pfx}libc_type=mingw64
5021         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5022             add_compat msvcrt/snprintf.o
5023             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5024         fi
5025         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5026         eval test \$${pfx_no_}cc_type = "gcc" &&
5027             add_${pfx}cppflags -D__printf__=__gnu_printf__
5028     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5029          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5030         eval ${pfx}libc_type=mingw32
5031         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5032             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5033             die "ERROR: MinGW32 runtime version must be >= 3.15."
5034         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5035         check_${pfx}cpp_condition _mingw.h "defined(_WIN32_WINNT) && _WIN32_WINNT >= 0x0502" ||
5036             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
5037         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700__" &&
5038             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5039         eval test \$${pfx_no_}cc_type = "gcc" &&
5040             add_${pfx}cppflags -D__printf__=__gnu_printf__
5041     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5042         eval ${pfx}libc_type=msvcrt
5043         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5044             if [ "$pfx" = host_ ]; then
5045                 add_host_cppflags -Dsnprintf=_snprintf
5046             else
5047                 add_compat strtod.o strtod=avpriv_strtod
5048                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5049                                              _snprintf=avpriv_snprintf  \
5050                                              vsnprintf=avpriv_vsnprintf
5051             fi
5052         fi
5053         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5054         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5055         # 0x601 by default unless something else is set by the user.
5056         # This can easily lead to us detecting functions only present
5057         # in such new versions and producing binaries requiring windows 7.0.
5058         # Therefore explicitly set the default to XP unless the user has
5059         # set something else on the command line.
5060         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5061         # family. For these cases, configure is free to use any functions
5062         # found in the SDK headers by default. (Alternatively, we could force
5063         # _WIN32_WINNT to 0x0602 in that case.)
5064         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5065             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
5066 #ifdef WINAPI_FAMILY
5067 #include <winapifamily.h>
5068 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5069 #error not desktop
5070 #endif
5071 #endif
5072 EOF
5073         if [ "$pfx" = "" ]; then
5074             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5075             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5076         fi
5077     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5078         eval ${pfx}libc_type=klibc
5079     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5080         eval ${pfx}libc_type=bionic
5081     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5082         eval ${pfx}libc_type=solaris
5083         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5084     fi
5085     check_${pfx}cc <<EOF
5086 #include <time.h>
5087 void *v = localtime_r;
5088 EOF
5089 test "$?" != 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
5090 #include <time.h>
5091 void *v = localtime_r;
5092 EOF
5093
5094 }
5095
5096 probe_libc
5097 test -n "$libc_type" && enable libc_$libc_type
5098 probe_libc host_
5099 test -n "$host_libc_type" && enable host_libc_$host_libc_type
5100
5101 case $libc_type in
5102     bionic)
5103         add_compat strtod.o strtod=avpriv_strtod
5104         ;;
5105 esac
5106
5107 # hacks for compiler/libc/os combinations
5108
5109 if enabled_all tms470 libc_glibc; then
5110     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
5111     add_cppflags -D__USER_LABEL_PREFIX__=
5112     add_cppflags -D__builtin_memset=memset
5113     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
5114     add_cflags   -pds=48    # incompatible redefinition of macro
5115 fi
5116
5117 if enabled_all ccc libc_glibc; then
5118     add_ldflags -Wl,-z,now  # calls to libots crash without this
5119 fi
5120
5121 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5122     add_cppflags '-I\$(SRC_PATH)/compat/float'
5123
5124 esc(){
5125     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
5126 }
5127
5128 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
5129
5130 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5131
5132 set_default libdir
5133 : ${shlibdir_default:="$libdir"}
5134 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5135
5136 set_default $PATHS_LIST
5137 set_default nm
5138
5139 # we need to build at least one lib type
5140 if ! enabled_any static shared; then
5141     cat <<EOF
5142 At least one library type must be built.
5143 Specify --enable-static to build the static libraries or --enable-shared to
5144 build the shared libraries as well. To only build the shared libraries specify
5145 --disable-static in addition to --enable-shared.
5146 EOF
5147     exit 1
5148 fi
5149
5150 die_license_disabled() {
5151     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
5152 }
5153
5154 die_license_disabled_gpl() {
5155     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
5156 }
5157
5158 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
5159 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
5160
5161 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
5162 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
5163
5164 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
5165
5166 disabled optimizations || check_cflags -fomit-frame-pointer
5167
5168 enable_weak_pic() {
5169     disabled pic && return
5170     enable pic
5171     add_cppflags -DPIC
5172     case "$target_os" in
5173     mingw*|cygwin*)
5174         ;;
5175     *)
5176         add_cflags -fPIC
5177         ;;
5178     esac
5179     add_asflags  -fPIC
5180 }
5181
5182 enabled pic && enable_weak_pic
5183
5184 check_cc <<EOF || die "Symbol mangling check failed."
5185 int ff_extern;
5186 EOF
5187 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5188 extern_prefix=${sym%%ff_extern*}
5189
5190 check_cc <<EOF && enable_weak inline_asm
5191 void foo(void) { __asm__ volatile ("" ::); }
5192 EOF
5193
5194 _restrict=
5195 for restrict_keyword in restrict __restrict__ __restrict; do
5196     check_cc <<EOF && _restrict=$restrict_keyword && break
5197 void foo(char * $restrict_keyword p);
5198 EOF
5199 done
5200
5201 check_cc <<EOF && enable pragma_deprecated
5202 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
5203 EOF
5204
5205 check_cc <<EOF && enable attribute_packed
5206 struct { int x; } __attribute__((packed)) x;
5207 EOF
5208
5209 check_cc <<EOF && enable attribute_may_alias
5210 union { int x; } __attribute__((may_alias)) x;
5211 EOF
5212
5213 check_cc <<EOF || die "endian test failed"
5214 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5215 EOF
5216 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5217
5218 if ! enabled ppc64 || enabled bigendian; then
5219     disable vsx
5220 fi
5221
5222 check_gas() {
5223     log "check_gas using '$as' as AS"
5224     # :vararg is used on aarch64, arm and ppc altivec
5225     check_as <<EOF || return 1
5226 .macro m n, y:vararg=0
5227 \n: .int \y
5228 .endm
5229 m x
5230 EOF
5231     # .altmacro is only used in arm asm
5232     ! enabled arm || check_as <<EOF || return 1
5233 .altmacro
5234 EOF
5235     enable gnu_as
5236     return 0
5237 }
5238
5239 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5240     nogas=:
5241     enabled_any arm aarch64 && nogas=die
5242     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5243     as_noop=-v
5244
5245     case $as_type in
5246         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5247         gcc)  gaspp_as_type=gas ;;
5248         *)    gaspp_as_type=$as_type ;;
5249     esac
5250
5251     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5252
5253     test "${as#*gas-preprocessor.pl}" != "$as" ||
5254     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5255         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5256
5257     if ! check_gas ; then
5258         as=${gas:=$as}
5259         check_gas || \
5260             $nogas "GNU assembler not found, install/update gas-preprocessor"
5261     fi
5262
5263     check_as <<EOF && enable as_func
5264 .func test
5265 .endfunc
5266 EOF
5267 fi
5268
5269 check_inline_asm inline_asm_labels '"1:\n"'
5270
5271 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5272
5273 if enabled aarch64; then
5274     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5275     # internal assembler in clang 3.3 does not support this instruction
5276     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5277     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5278
5279     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5280
5281 elif enabled alpha; then
5282
5283     check_cflags -mieee
5284
5285 elif enabled arm; then
5286
5287     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
5288
5289     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
5290 float func(float a, float b){ return a+b; }
5291 EOF
5292
5293     enabled thumb && check_cflags -mthumb || check_cflags -marm
5294
5295     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
5296         enable vfp_args
5297     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5298         enable vfp_args
5299     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5300         case "${cross_prefix:-$cc}" in
5301             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
5302             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
5303 __asm__ (".eabi_attribute 28, 1");
5304 int main(void) { return 0; }
5305 EOF
5306         esac
5307         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5308     fi
5309
5310     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5311     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5312     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5313     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5314     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5315     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5316     enabled setend  && check_insn setend  'setend be'
5317
5318     [ $target_os = linux ] || [ $target_os = android ] ||
5319         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5320             $ARCH_EXT_LIST_ARM
5321
5322     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5323
5324     check_as <<EOF && enable as_dn_directive
5325 ra .dn d0.i16
5326 .unreq ra
5327 EOF
5328     check_as <<EOF && enable as_fpu_directive
5329 .fpu neon
5330 EOF
5331
5332     # llvm's integrated assembler supports .object_arch from llvm 3.5
5333     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
5334 .object_arch armv4
5335 EOF
5336
5337     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5338
5339 elif enabled mips; then
5340
5341     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5342     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5343     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5344
5345     # Enable minimum ISA based on selected options
5346     if enabled mips64; then
5347         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5348         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5349         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5350     else
5351         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5352         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5353         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5354         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5355     fi
5356
5357     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5358     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5359     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
5360     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5361     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5362
5363 elif enabled parisc; then
5364
5365     if enabled gcc; then
5366         case $($cc -dumpversion) in
5367             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5368         esac
5369     fi
5370
5371 elif enabled ppc; then
5372
5373     enable local_aligned_8 local_aligned_16 local_aligned_32
5374
5375     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5376     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5377     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5378     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5379
5380     # AltiVec flags: The FSF version of GCC differs from the Apple version
5381     if enabled altivec; then
5382         check_cflags -maltivec -mabi=altivec &&
5383         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
5384         check_cflags -faltivec
5385
5386         # check if our compiler supports Motorola AltiVec C API
5387         check_cc <<EOF || disable altivec
5388 $inc_altivec_h
5389 int main(void) {
5390     vector signed int v1 = (vector signed int) { 0 };
5391     vector signed int v2 = (vector signed int) { 1 };
5392     v1 = vec_add(v1, v2);
5393     return 0;
5394 }
5395 EOF
5396
5397         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5398     fi
5399
5400     if enabled vsx; then
5401         check_cflags -mvsx &&
5402         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
5403     fi
5404
5405     if enabled power8; then
5406         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
5407     fi
5408
5409 elif enabled x86; then
5410
5411     check_builtin rdtsc    intrin.h   "__rdtsc()"
5412     check_builtin mm_empty mmintrin.h "_mm_empty()"
5413
5414     enable local_aligned_8 local_aligned_16 local_aligned_32
5415
5416     # check whether EBP is available on x86
5417     # As 'i' is stored on the stack, this program will crash
5418     # if the base pointer is used to access it because the
5419     # base pointer is cleared in the inline assembly code.
5420     check_exec_crash <<EOF && enable ebp_available
5421 volatile int i=0;
5422 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5423 return i;
5424 EOF
5425
5426     # check whether EBX is available on x86
5427     check_inline_asm ebx_available '""::"b"(0)' &&
5428         check_inline_asm ebx_available '"":::"%ebx"'
5429
5430     # check whether xmm clobbers are supported
5431     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5432
5433     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5434         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5435
5436     # check whether binutils is new enough to compile SSSE3/MMXEXT
5437     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5438     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5439
5440     if ! disabled_any asm mmx yasm; then
5441         if check_cmd $yasmexe --version; then
5442             enabled x86_64 && yasm_extra="-m amd64"
5443             yasm_debug="-g dwarf2"
5444         elif check_cmd nasm -v; then
5445             yasmexe=nasm
5446             yasm_debug="-g -F dwarf"
5447             if enabled x86_64; then
5448                 case "$objformat" in
5449                     elf)   objformat=elf64 ;;
5450                     win32) objformat=win64 ;;
5451                 esac
5452             fi
5453         fi
5454
5455         YASMFLAGS="-f $objformat $yasm_extra"
5456         enabled pic               && append YASMFLAGS "-DPIC"
5457         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
5458         case "$objformat" in
5459             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
5460         esac
5461
5462         check_yasm "movbe ecx, [5]" && enable yasm ||
5463             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
5464         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
5465         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
5466         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
5467         check_yasm "CPU amdnop" || disable cpunop
5468     fi
5469
5470     case "$cpu" in
5471         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5472             disable fast_clz
5473         ;;
5474     esac
5475
5476 fi
5477
5478 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
5479
5480 check_ldflags -Wl,--as-needed
5481 check_ldflags -Wl,-z,noexecstack
5482
5483 if check_func dlopen && check_func dlsym; then
5484     ldl=
5485 elif check_func dlopen -ldl && check_func dlsym -ldl; then
5486     ldl=-ldl
5487 fi
5488
5489 avisynth_demuxer_extralibs='$ldl'
5490 cuda_extralibs='$ldl'
5491 decklink_outdev_extralibs="$decklink_outdev_extralibs $ldl"
5492 decklink_indev_extralibs="$decklink_indev_extralibs $ldl"
5493 frei0r_filter_extralibs='$ldl'
5494 frei0r_src_filter_extralibs='$ldl'
5495 ladspa_filter_extralibs='$ldl'
5496 nvenc_extralibs='$ldl'
5497 coreimage_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5498 coreimagesrc_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5499
5500 if ! disabled network; then
5501     check_func getaddrinfo $network_extralibs
5502     check_func inet_aton $network_extralibs
5503
5504     check_type netdb.h "struct addrinfo"
5505     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5506     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5507     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5508     check_type poll.h "struct pollfd"
5509     check_type netinet/sctp.h "struct sctp_event_subscribe"
5510     check_struct "sys/socket.h" "struct msghdr" msg_flags
5511     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5512     check_type netinet/in.h "struct sockaddr_in6"
5513     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5514     check_type "sys/types.h sys/socket.h" socklen_t
5515
5516     # Prefer arpa/inet.h over winsock2
5517     if check_header arpa/inet.h ; then
5518         check_func closesocket
5519     elif check_header winsock2.h ; then
5520         check_func_headers winsock2.h closesocket -lws2 &&
5521             network_extralibs="-lws2" ||
5522         { check_func_headers winsock2.h closesocket -lws2_32 &&
5523             network_extralibs="-lws2_32"; } || disable winsock2_h network
5524         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5525
5526         check_type ws2tcpip.h socklen_t
5527         check_type ws2tcpip.h "struct addrinfo"
5528         check_type ws2tcpip.h "struct group_source_req"
5529         check_type ws2tcpip.h "struct ip_mreq_source"
5530         check_type ws2tcpip.h "struct ipv6_mreq"
5531         check_type winsock2.h "struct pollfd"
5532         check_struct winsock2.h "struct sockaddr" sa_len
5533         check_type ws2tcpip.h "struct sockaddr_in6"
5534         check_type ws2tcpip.h "struct sockaddr_storage"
5535     else
5536         disable network
5537     fi
5538 fi
5539
5540 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5541 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5542 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5543 check_builtin sarestart signal.h "SA_RESTART"
5544 check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" -lpthread
5545 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5546 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5547 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5548 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5549
5550 case "$custom_allocator" in
5551     jemalloc)
5552         # jemalloc by default does not use a prefix
5553         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5554     ;;
5555     tcmalloc)
5556         require_pkg_config libtcmalloc gperftools/tcmalloc.h tc_malloc
5557         malloc_prefix=tc_
5558     ;;
5559 esac
5560
5561 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5562 check_func  ${malloc_prefix}memalign            && enable memalign
5563 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5564
5565 check_func  access
5566 check_func_headers stdlib.h arc4random
5567 check_func_headers time.h clock_gettime ||
5568     { check_lib time.h clock_gettime -lrt && LIBRT="-lrt"; }
5569 check_func  fcntl
5570 check_func  fork
5571 check_func  gethrtime
5572 check_func  getopt
5573 check_func  getrusage
5574 check_func  gettimeofday
5575 check_func  isatty
5576 check_func  mach_absolute_time
5577 check_func  mkstemp
5578 check_func  mmap
5579 check_func  mprotect
5580 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5581 check_func_headers time.h nanosleep ||
5582     { check_lib time.h nanosleep -lrt && LIBRT="-lrt"; }
5583 check_func  sched_getaffinity
5584 check_func  setrlimit
5585 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5586 check_func  strerror_r
5587 check_func  sysconf
5588 check_func  sysctl
5589 check_func  usleep
5590
5591 check_func_headers conio.h kbhit
5592 check_func_headers io.h setmode
5593 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5594 check_func_headers stdlib.h getenv
5595 check_func_headers sys/stat.h lstat
5596
5597 check_func_headers windows.h CoTaskMemFree -lole32
5598 check_func_headers windows.h GetProcessAffinityMask
5599 check_func_headers windows.h GetProcessTimes
5600 check_func_headers windows.h GetSystemTimeAsFileTime
5601 check_func_headers windows.h LoadLibrary
5602 check_func_headers windows.h MapViewOfFile
5603 check_func_headers windows.h PeekNamedPipe
5604 check_func_headers windows.h SetConsoleTextAttribute
5605 check_func_headers windows.h SetConsoleCtrlHandler
5606 check_func_headers windows.h Sleep
5607 check_func_headers windows.h VirtualAlloc
5608 check_struct windows.h "CONDITION_VARIABLE" Ptr
5609 check_func_headers glob.h glob
5610 enabled xlib &&
5611     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5612
5613 check_header AudioToolbox/AudioToolbox.h
5614 check_header direct.h
5615 check_header dirent.h
5616 check_header dlfcn.h
5617 check_header d3d11.h
5618 check_header dxva.h
5619 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5620 check_header io.h
5621 check_header libcrystalhd/libcrystalhd_if.h
5622 check_header mach/mach_time.h
5623 check_header malloc.h
5624 check_header net/udplite.h
5625 check_header poll.h
5626 check_header sys/mman.h
5627 check_header sys/param.h
5628 check_header sys/resource.h
5629 check_header sys/select.h
5630 check_header sys/time.h
5631 check_header sys/un.h
5632 check_header termios.h
5633 check_header unistd.h
5634 check_header valgrind/valgrind.h
5635 check_header vdpau/vdpau.h
5636 check_header vdpau/vdpau_x11.h
5637 check_header VideoDecodeAcceleration/VDADecoder.h
5638 check_header VideoToolbox/VideoToolbox.h
5639 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5640 enabled videotoolbox && check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferColorPrimaries_ITU_R_2020 -framework CoreVideo
5641 check_header windows.h
5642 check_header X11/extensions/XvMClib.h
5643 check_header asm/types.h
5644
5645 # it seems there are versions of clang in some distros that try to use the
5646 # gcc headers, which explodes for stdatomic
5647 # so we also check that atomics actually work here
5648 check_builtin stdatomic_h stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0)"
5649
5650 check_lib "windows.h shellapi.h" CommandLineToArgvW   -lshell32
5651 check_lib "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
5652 check_lib "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
5653
5654 check_lib "CoreServices/CoreServices.h" UTGetOSTypeFromString "-framework CoreServices"
5655
5656 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5657
5658 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5659 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5660 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5661 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5662 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5663
5664 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
5665 check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
5666 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
5667 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
5668 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5669 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5670 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
5671 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
5672
5673 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5674
5675 check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt
5676
5677 if ! disabled w32threads && ! enabled pthreads; then
5678     check_func_headers "windows.h process.h" _beginthreadex &&
5679         enable w32threads || disable w32threads
5680     if ! enabled w32threads && enabled winrt; then
5681         check_func_headers "windows.h" CreateThread &&
5682             enable w32threads || disable w32threads
5683     fi
5684 fi
5685
5686 # check for some common methods of building with pthread support
5687 # do this before the optional library checks as some of them require pthreads
5688 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5689     enable pthreads
5690     if check_func pthread_join -pthread && check_func pthread_create -pthread; then
5691         add_cflags -pthread
5692         add_extralibs -pthread
5693     elif check_func pthread_join -pthreads && check_func pthread_create -pthreads; then
5694         add_cflags -pthreads
5695         add_extralibs -pthreads
5696     elif check_func pthread_join -ldl -pthread && check_func pthread_create -ldl -pthread; then
5697         add_cflags -ldl -pthread
5698         add_extralibs -ldl -pthread
5699     elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
5700         add_extralibs -lpthreadGC2
5701     elif check_lib pthread.h pthread_join -lpthread && check_lib pthread.h pthread_create -lpthread; then
5702         :
5703     elif ! check_func pthread_join && ! check_func pthread_create; then
5704         disable pthreads
5705     fi
5706     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5707 fi
5708
5709
5710 if enabled pthreads; then
5711   check_func pthread_cancel
5712 fi
5713
5714 enabled pthreads &&
5715     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)"
5716
5717 disabled  zlib || check_lib  zlib.h      zlibVersion    -lz    || disable  zlib
5718 disabled bzlib || check_lib bzlib.h BZ2_bzlibVersion    -lbz2  || disable bzlib
5719 disabled  lzma || check_lib  lzma.h lzma_version_number -llzma || disable lzma
5720
5721 check_lib math.h sin -lm && LIBM="-lm"
5722 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
5723
5724 atan2f_args=2
5725 copysign_args=2
5726 hypot_args=2
5727 ldexpf_args=2
5728 powf_args=2
5729
5730 for func in $MATH_FUNCS; do
5731     eval check_mathfunc $func \${${func}_args:-1}
5732 done
5733
5734 for func in $COMPLEX_FUNCS; do
5735     eval check_complexfunc $func \${${func}_args:-1}
5736 done
5737
5738 # these are off by default, so fail if requested and not available
5739 enabled avfoundation_indev && { check_header_objcc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
5740 enabled avfoundation_indev && { check_lib CoreGraphics/CoreGraphics.h CGGetActiveDisplayList -framework CoreGraphics ||
5741                                 check_lib ApplicationServices/ApplicationServices.h CGGetActiveDisplayList -framework ApplicationServices; }
5742 enabled cuda              && check_header cuda.h # this is not a dependency
5743 enabled cuvid             && { enabled cuda ||
5744                                die "ERROR: CUVID requires CUDA"; }
5745 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5746 enabled coreimage_filter  && { check_header_objcc QuartzCore/CoreImage.h || disable coreimage_filter; }
5747 enabled coreimagesrc_filter && { check_header_objcc QuartzCore/CoreImage.h || disable coreimagesrc_filter; }
5748 enabled decklink          && { { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; } &&
5749                                { check_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a060100" || die "ERROR: Decklink API version must be >= 10.6.1."; } }
5750 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
5751 enabled gmp               && require gmp gmp.h mpz_export -lgmp
5752 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
5753 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads &&
5754                                check_lib "dlfcn.h" dlopen -ldl; }
5755 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
5756 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5757 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
5758 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
5759 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
5760 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5761                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
5762                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5763 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
5764 enabled libfdk_aac        && { use_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5765                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5766                                  warn "using libfdk without pkg-config"; } }
5767 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"
5768 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_libs
5769 enabled fontconfig        && enable libfontconfig
5770 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
5771 enabled libfreetype       && require_libfreetype
5772 enabled libfribidi        && require_pkg_config fribidi fribidi.h fribidi_version_info
5773 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
5774 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5775                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
5776                                done || die "ERROR: libgsm not found"; }
5777 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
5778 enabled libkvazaar        && require_pkg_config "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
5779 enabled libmfx            && require_pkg_config libmfx "mfx/mfxvideo.h" MFXInit
5780 enabled libmodplug        && require_pkg_config libmodplug libmodplug/modplug.h ModPlug_Load
5781 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5782 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
5783 enabled libnpp            && require libnpp npp.h nppGetLibVersion -lnppi -lnppc
5784 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5785 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5786 enabled libopencv         && { check_header opencv2/core/core_c.h &&
5787                                { use_pkg_config opencv opencv2/core/core_c.h cvCreateImageHeader ||
5788                                  require opencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
5789                                require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader; }
5790 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
5791 enabled libopenjpeg       && { { check_lib openjpeg-2.1/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5792                                check_lib openjpeg-2.1/openjpeg.h opj_version -lopenjp2 ||
5793                                { check_lib openjpeg-2.0/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5794                                { check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5795                                { check_lib openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5796                                die "ERROR: libopenjpeg not found"; }
5797 enabled libopenmpt        && require_pkg_config "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create
5798 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
5799 enabled libpulse          && require_pkg_config libpulse pulse/pulseaudio.h pa_context_new
5800 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
5801 enabled librubberband     && require_pkg_config "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new
5802 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
5803 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
5804 enabled libsmbclient      && { use_pkg_config smbclient libsmbclient.h smbc_init ||
5805                                require smbclient libsmbclient.h smbc_init -lsmbclient; }
5806 enabled libsnappy         && require snappy snappy-c.h snappy_compress -lsnappy
5807 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr && LIBSOXR="-lsoxr"
5808 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
5809 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
5810 enabled libtesseract      && require_pkg_config tesseract tesseract/capi.h TessBaseAPICreate
5811 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
5812 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
5813                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
5814                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
5815 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
5816 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
5817 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
5818 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
5819
5820 enabled libvpx            && {
5821     enabled libvpx_vp8_decoder && {
5822         use_pkg_config "vpx >= 0.9.1" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
5823             check_lib "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
5824                 die "ERROR: libvpx decoder version must be >=0.9.1";
5825     }
5826     enabled libvpx_vp8_encoder && {
5827         use_pkg_config "vpx >= 0.9.7" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
5828             check_lib "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
5829                 die "ERROR: libvpx encoder version must be >=0.9.7";
5830     }
5831     enabled libvpx_vp9_decoder && {
5832         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
5833             check_lib "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx ||
5834                 disable libvpx_vp9_decoder;
5835     }
5836     enabled libvpx_vp9_encoder && {
5837         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
5838             check_lib "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx ||
5839                 disable libvpx_vp9_encoder;
5840     }
5841     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
5842         die "libvpx enabled but no supported decoders found"
5843     fi
5844 }
5845
5846 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
5847 enabled libwebp           && {
5848     enabled libwebp_encoder      && require_pkg_config "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
5849     enabled libwebp_anim_encoder && { use_pkg_config "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit || disable libwebp_anim_encoder; } }
5850 enabled libx264           && { use_pkg_config x264 "stdint.h x264.h" x264_encoder_encode ||
5851                                { require libx264 "stdint.h x264.h" x264_encoder_encode -lx264 &&
5852                                  warn "using libx264 without pkg-config"; } } &&
5853                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
5854                                die "ERROR: libx264 must be installed and version must be >= 0.118."; } &&
5855                              { check_cpp_condition x264.h "X264_MPEG2" &&
5856                                enable libx262; }
5857 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
5858                              { check_cpp_condition x265.h "X265_BUILD >= 68" ||
5859                                die "ERROR: libx265 version must be >= 68."; }
5860 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode -lxavs
5861 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
5862 enabled libzimg           && require_pkg_config "zimg >= 2.3.0" zimg.h zimg_get_api_version
5863 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
5864 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi &&
5865                              { check_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
5866                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
5867 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
5868 enabled mmal              && { check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
5869                                 { ! enabled cross_compile && {
5870                                     add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline ;
5871                                     add_extralibs -L/opt/vc/lib/ -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ;
5872                                     check_lib interface/mmal/mmal.h mmal_port_connect ; }
5873                                 check_lib interface/mmal/mmal.h mmal_port_connect ; } ||
5874                                die "ERROR: mmal not found"; }
5875 enabled mmal && check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"
5876
5877 enabled netcdf            && require_pkg_config netcdf netcdf.h nc_inq_libvers
5878 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
5879                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
5880                                die "ERROR: openal not found"; } &&
5881                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
5882                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
5883 enabled opencl            && { check_lib OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
5884                                check_lib CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
5885                                die "ERROR: opencl not found"; } &&
5886                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
5887                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
5888                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
5889 enabled opengl            && { check_lib GL/glx.h glXGetProcAddress "-lGL" ||
5890                                check_lib windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
5891                                check_lib OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
5892                                check_lib ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
5893                                die "ERROR: opengl not found."
5894                              }
5895 enabled omx_rpi && enable omx
5896 enabled omx               && { check_header OMX_Core.h ||
5897                                 { ! enabled cross_compile && enabled omx_rpi && {
5898                                     add_cflags -isystem/opt/vc/include/IL ; }
5899                                 check_header OMX_Core.h ; } ||
5900                                die "ERROR: OpenMAX IL headers not found"; }
5901 enabled openssl           && { use_pkg_config openssl openssl/ssl.h OPENSSL_init_ssl ||
5902                                use_pkg_config openssl openssl/ssl.h SSL_library_init ||
5903                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
5904                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
5905                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
5906                                die "ERROR: openssl not found"; }
5907 enabled qtkit_indev      && { check_header_objcc QTKit/QTKit.h || disable qtkit_indev; }
5908
5909 # libdc1394 check
5910 if enabled libdc1394; then
5911     { require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new &&
5912         enable libdc1394_2; } ||
5913     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
5914         enable libdc1394_1; } ||
5915     die "ERROR: No version of libdc1394 found "
5916 fi
5917
5918 if enabled gcrypt; then
5919     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
5920     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
5921         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
5922         gcrypt_libs=$("${GCRYPT_CONFIG}" --libs)
5923         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_libs ||
5924             die "ERROR: gcrypt not found"
5925         add_cflags $gcrypt_cflags && add_extralibs $gcrypt_libs
5926     else
5927         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
5928     fi
5929 fi
5930
5931 disabled sdl && disable sdl2
5932 if ! disabled sdl2; then
5933     SDL2_CONFIG="${cross_prefix}sdl2-config"
5934     if check_pkg_config sdl2 SDL_events.h SDL_PollEvent; then
5935         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
5936         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
5937         check_func SDL_Init $sdl2_libs $sdl2_cflags && enable sdl2
5938     else
5939       if "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
5940         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
5941         sdl2_libs=$("${SDL2_CONFIG}" --libs)
5942         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
5943         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
5944         check_func SDL_Init $sdl2_libs $sdl2_cflags && enable sdl2
5945       fi
5946     fi
5947     if test $target_os = "mingw32"; then
5948         sdl2_libs="$sdl2_libs -mconsole"
5949     fi
5950 fi
5951 enabled sdl2 && enable sdl && add_cflags $sdl2_cflags && add_extralibs $sdl2_libs
5952
5953 disabled securetransport || { check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5954     check_lib "Security/SecureTransport.h Security/Security.h" "SSLCreateContext SecItemImport" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5955     enable securetransport; }
5956
5957 disabled schannel || { check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
5958                        check_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" && enable schannel && add_extralibs -lsecur32; }
5959
5960 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
5961 enabled makeinfo \
5962     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
5963     && enable makeinfo_html || disable makeinfo_html
5964 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
5965 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
5966 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
5967 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
5968
5969 check_header linux/fb.h
5970 check_header linux/videodev.h
5971 check_header linux/videodev2.h
5972 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5973
5974 check_header sys/videoio.h
5975 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5976
5977 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
5978 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
5979 # w32api 3.12 had it defined wrong
5980 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
5981
5982 check_type "dshow.h" IBaseFilter
5983
5984 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
5985 { check_header dev/bktr/ioctl_meteor.h &&
5986   check_header dev/bktr/ioctl_bt848.h; } ||
5987 { check_header machine/ioctl_meteor.h &&
5988   check_header machine/ioctl_bt848.h; } ||
5989 { check_header dev/video/meteor/ioctl_meteor.h &&
5990   check_header dev/video/bktr/ioctl_bt848.h; } ||
5991 check_header dev/ic/bt8xx.h
5992
5993 check_header sndio.h
5994 if check_struct sys/soundcard.h audio_buf_info bytes; then
5995     enable_safe sys/soundcard.h
5996 else
5997     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
5998     #include <sys/soundcard.h>
5999     audio_buf_info abc;
6000 EOF
6001 fi
6002 check_header soundcard.h
6003
6004 enabled_any alsa_indev alsa_outdev &&
6005     check_lib alsa/asoundlib.h snd_pcm_htimestamp -lasound
6006
6007 enabled jack_indev && check_lib jack/jack.h jack_client_open -ljack &&
6008     check_func jack_port_get_latency_range -ljack
6009
6010 enabled_any sndio_indev sndio_outdev && check_lib sndio.h sio_open -lsndio
6011
6012 if enabled libcdio; then
6013     check_lib "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6014     check_lib "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6015     die "ERROR: No usable libcdio/cdparanoia found"
6016 fi
6017
6018 enabled xlib &&
6019     check_lib X11/Xlib.h XOpenDisplay -lX11 || disable xlib
6020
6021 if ! disabled libxcb; then
6022     check_pkg_config "xcb >= 1.4" xcb/xcb.h xcb_connect || {
6023         enabled libxcb && die "ERROR: libxcb >= 1.4 not found";
6024     } && enable libxcb
6025
6026 if enabled libxcb; then
6027     disabled libxcb_shm || {
6028         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
6029             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
6030         } && check_header sys/shm.h && enable libxcb_shm; }
6031
6032     disabled libxcb_xfixes || {
6033         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
6034             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
6035         } && enable libxcb_xfixes; }
6036
6037     disabled libxcb_shape || {
6038         check_pkg_config xcb-shape xcb/shape.h xcb_shape_get_rectangles || {
6039             enabled libxcb_shape && die "ERROR: libxcb_shape not found";
6040         } && enable libxcb_shape; }
6041
6042     add_cflags $xcb_cflags $xcb_shm_cflags $xcb_xfixes_cflags $xcb_shape_cflags
6043     add_extralibs $xcb_libs $xcb_shm_libs $xcb_xfixes_libs $xcb_shape_libs
6044 fi
6045 fi
6046
6047 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6048
6049 enabled dxva2api_h &&
6050     check_cc <<EOF && enable dxva2api_cobj
6051 #define _WIN32_WINNT 0x0600
6052 #define COBJMACROS
6053 #include <windows.h>
6054 #include <d3d9.h>
6055 #include <dxva2api.h>
6056 int main(void) { IDirectXVideoDecoder *o = NULL; IDirectXVideoDecoder_Release(o); return 0; }
6057 EOF
6058
6059 enabled vaapi &&
6060     check_lib va/va.h vaInitialize -lva ||
6061     disable vaapi
6062
6063 enabled vaapi &&
6064     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
6065     disable vaapi
6066
6067 if enabled vaapi ; then
6068     enabled xlib &&
6069     check_lib "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 &&
6070     enable vaapi_x11
6071
6072     check_lib "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm &&
6073     enable vaapi_drm
6074 fi
6075
6076 enabled vdpau &&
6077     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
6078     disable vdpau
6079
6080 enabled vdpau && enabled xlib &&
6081     check_lib "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
6082     enable vdpau_x11
6083
6084 if enabled x86; then
6085     case $target_os in
6086         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6087             ;;
6088         *)
6089             disable cuda cuvid nvenc
6090             ;;
6091     esac
6092 else
6093     disable cuda cuvid nvenc
6094 fi
6095
6096 enabled nvenc &&
6097     check_cc -I$source_path <<EOF || disable nvenc
6098 #include "compat/nvenc/nvEncodeAPI.h"
6099 NV_ENCODE_API_FUNCTION_LIST flist;
6100 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6101 int main(void) { return 0; }
6102 EOF
6103
6104 # Funny iconv installations are not unusual, so check it after all flags have been set
6105 disabled iconv || check_func_headers iconv.h iconv || check_lib iconv.h iconv -liconv || disable iconv
6106
6107 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6108
6109 # add some useful compiler flags if supported
6110 check_cflags -Wdeclaration-after-statement
6111 check_cflags -Wall
6112 check_cflags -Wdisabled-optimization
6113 check_cflags -Wpointer-arith
6114 check_cflags -Wredundant-decls
6115 check_cflags -Wwrite-strings
6116 check_cflags -Wtype-limits
6117 check_cflags -Wundef
6118 check_cflags -Wmissing-prototypes
6119 check_cflags -Wno-pointer-to-int-cast
6120 check_cflags -Wstrict-prototypes
6121 check_cflags -Wempty-body
6122 enabled extra_warnings && check_cflags -Winline
6123 enabled extra_warnings && check_cflags -Wcast-qual
6124
6125 check_disable_warning(){
6126     warning_flag=-W${1#-Wno-}
6127     test_cflags $warning_flag && add_cflags $1
6128 }
6129
6130 check_disable_warning -Wno-parentheses
6131 check_disable_warning -Wno-switch
6132 check_disable_warning -Wno-format-zero-length
6133 check_disable_warning -Wno-pointer-sign
6134 check_disable_warning -Wno-unused-const-variable
6135
6136 # add some linker flags
6137 check_ldflags -Wl,--warn-common
6138 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6139 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
6140 enabled rpath && add_ldlibflags -Wl,-rpath,$libdir
6141 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6142
6143 # add some strip flags
6144 # -wN '..@*' is more selective than -x, but not available everywhere.
6145 check_stripflags -wN \'..@*\' || check_stripflags -x
6146
6147 enabled neon_clobber_test &&
6148     check_ldflags -Wl,--wrap,avcodec_open2              \
6149                   -Wl,--wrap,avcodec_decode_audio4      \
6150                   -Wl,--wrap,avcodec_decode_video2      \
6151                   -Wl,--wrap,avcodec_decode_subtitle2   \
6152                   -Wl,--wrap,avcodec_encode_audio2      \
6153                   -Wl,--wrap,avcodec_encode_video2      \
6154                   -Wl,--wrap,avcodec_send_packet        \
6155                   -Wl,--wrap,avcodec_receive_frame      \
6156                   -Wl,--wrap,avcodec_send_frame         \
6157                   -Wl,--wrap,avcodec_receive_packet     \
6158                   -Wl,--wrap,avcodec_encode_subtitle    \
6159                   -Wl,--wrap,swr_convert                \
6160                   -Wl,--wrap,avresample_convert ||
6161     disable neon_clobber_test
6162
6163 enabled xmm_clobber_test &&
6164     check_ldflags -Wl,--wrap,avcodec_open2              \
6165                   -Wl,--wrap,avcodec_decode_audio4      \
6166                   -Wl,--wrap,avcodec_decode_video2      \
6167                   -Wl,--wrap,avcodec_decode_subtitle2   \
6168                   -Wl,--wrap,avcodec_encode_audio2      \
6169                   -Wl,--wrap,avcodec_encode_video2      \
6170                   -Wl,--wrap,avcodec_encode_subtitle    \
6171                   -Wl,--wrap,avcodec_send_packet        \
6172                   -Wl,--wrap,avcodec_receive_frame      \
6173                   -Wl,--wrap,avcodec_send_frame         \
6174                   -Wl,--wrap,avcodec_receive_packet     \
6175                   -Wl,--wrap,swr_convert                \
6176                   -Wl,--wrap,avresample_convert         \
6177                   -Wl,--wrap,sws_scale ||
6178     disable xmm_clobber_test
6179
6180 check_ld "cc" <<EOF && enable proper_dce
6181 extern const int array[512];
6182 static inline int func(void) { return array[0]; }
6183 int main(void) { return 0; }
6184 EOF
6185
6186 if enabled proper_dce; then
6187     echo "X { local: *; };" > $TMPV
6188     if test_ldflags -Wl,${version_script},$TMPV; then
6189         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6190         check_cc <<EOF && enable symver_asm_label
6191 void ff_foo(void) __asm__ ("av_foo@VERSION");
6192 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6193 EOF
6194         check_cc <<EOF && enable symver_gnu_asm
6195 __asm__(".symver ff_foo,av_foo@VERSION");
6196 void ff_foo(void) {}
6197 EOF
6198     fi
6199 fi
6200
6201 if [ -z "$optflags" ]; then
6202     if enabled small; then
6203         optflags=$cflags_size
6204     elif enabled optimizations; then
6205         optflags=$cflags_speed
6206     else
6207         optflags=$cflags_noopt
6208     fi
6209 fi
6210
6211 check_optflags(){
6212     check_cflags "$@"
6213     enabled lto && check_ldflags "$@"
6214 }
6215
6216
6217 if enabled lto; then
6218     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6219     check_cflags  -flto
6220     check_ldflags -flto $cpuflags
6221     disable inline_asm_direct_symbol_refs
6222 fi
6223
6224 check_optflags $optflags
6225 check_optflags -fno-math-errno
6226 check_optflags -fno-signed-zeros
6227
6228 enabled ftrapv && check_cflags -ftrapv
6229
6230 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6231 int x;
6232 EOF
6233
6234
6235 if enabled icc; then
6236     # Just warnings, no remarks
6237     check_cflags -w1
6238     # -wd: Disable following warnings
6239     # 144, 167, 556: -Wno-pointer-sign
6240     # 188: enumerated type mixed with another type
6241     # 1292: attribute "foo" ignored
6242     # 1419: external declaration in primary source file
6243     # 10006: ignoring unknown option -fno-signed-zeros
6244     # 10148: ignoring unknown option -Wno-parentheses
6245     # 10156: ignoring option '-W'; no argument required
6246     # 13200: No EMMS instruction before call to function
6247     # 13203: No EMMS instruction before return from function
6248     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6249     # 11030: Warning unknown option --as-needed
6250     # 10156: ignoring option '-export'; no argument required
6251     check_ldflags -wd10156,11030
6252     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6253     enable ebp_available
6254     # The test above does not test linking
6255     enabled lto && disable symver_asm_label
6256     if enabled x86_32; then
6257         icc_version=$($cc -dumpversion)
6258         test ${icc_version%%.*} -ge 11 &&
6259             check_cflags -falign-stack=maintain-16-byte ||
6260             disable aligned_stack
6261     fi
6262 elif enabled ccc; then
6263     # disable some annoying warnings
6264     add_cflags -msg_disable bitnotint
6265     add_cflags -msg_disable mixfuncvoid
6266     add_cflags -msg_disable nonstandcast
6267     add_cflags -msg_disable unsupieee
6268 elif enabled gcc; then
6269     check_optflags -fno-tree-vectorize
6270     check_cflags -Werror=format-security
6271     check_cflags -Werror=implicit-function-declaration
6272     check_cflags -Werror=missing-prototypes
6273     check_cflags -Werror=return-type
6274     check_cflags -Werror=vla
6275     check_cflags -Wformat
6276     check_cflags -fdiagnostics-color=auto
6277     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6278 elif enabled llvm_gcc; then
6279     check_cflags -mllvm -stack-alignment=16
6280 elif enabled clang; then
6281     check_cflags -mllvm -stack-alignment=16
6282     check_cflags -mstack-alignment=16
6283     check_cflags -Qunused-arguments
6284     check_cflags -Werror=implicit-function-declaration
6285     check_cflags -Werror=missing-prototypes
6286     check_cflags -Werror=return-type
6287 elif enabled cparser; then
6288     add_cflags -Wno-missing-variable-declarations
6289     add_cflags -Wno-empty-statement
6290 elif enabled armcc; then
6291     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6292     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6293     # 2523: use of inline assembly is deprecated
6294     add_cflags -W${armcc_opt},--diag_suppress=2523
6295     add_cflags -W${armcc_opt},--diag_suppress=1207
6296     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6297     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6298     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6299     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6300 elif enabled tms470; then
6301     add_cflags -pds=824 -pds=837
6302     disable inline_asm
6303 elif enabled pathscale; then
6304     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6305 elif enabled_any msvc icl; then
6306     enabled x86_32 && disable aligned_stack
6307     enabled_all x86_32 debug && add_cflags -Oy-
6308     enabled debug && add_ldflags -debug
6309     enable pragma_deprecated
6310     if enabled icl; then
6311         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6312         # (correctly) on icl 13.x.
6313         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6314             add_cflags -Qansi-alias
6315         # Some inline asm is not compilable in debug
6316         if enabled debug; then
6317             disable ebp_available
6318             disable ebx_available
6319         fi
6320     fi
6321     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6322     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
6323     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6324     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6325     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6326     # MSVC 2013 and newer can handle it fine.
6327     # If this declspec fails, force including stdlib.h before the restrict redefinition
6328     # happens in config.h.
6329     if [ $_restrict != restrict ]; then
6330         check_cc <<EOF || add_cflags -FIstdlib.h
6331 __declspec($_restrict) void* foo(int);
6332 EOF
6333     fi
6334     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6335     # Issue has been fixed in MSVC v19.00.24218.
6336     check_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6337         check_cflags -d2SSAOptimizer-
6338     # enable utf-8 source processing on VS2015 U2 and newer
6339     check_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6340         add_cflags -utf-8
6341 fi
6342
6343 for pfx in "" host_; do
6344     varname=${pfx%_}cc_type
6345     eval "type=\$$varname"
6346     if [ $type = "msvc" ]; then
6347         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6348 static inline int foo(int a) { return a; }
6349 EOF
6350     fi
6351 done
6352
6353 case $as_type in
6354     clang)
6355         add_asflags -Qunused-arguments
6356     ;;
6357 esac
6358
6359 case $ld_type in
6360     clang)
6361         check_ldflags -Qunused-arguments
6362     ;;
6363 esac
6364
6365 case $target_os in
6366     osf1)
6367         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
6368     ;;
6369     plan9)
6370         add_cppflags -Dmain=plan9_main
6371     ;;
6372 esac
6373
6374 enable frame_thread_encoder
6375
6376 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6377
6378 check_deps $CONFIG_LIST       \
6379            $CONFIG_EXTRA      \
6380            $HAVE_LIST         \
6381            $ALL_COMPONENTS    \
6382
6383 enabled threads && ! enabled pthreads && ! enabled atomics_native && die "non pthread threading without atomics not supported, try adding --enable-pthreads or --cpu=i486 or higher if you are on x86"
6384
6385
6386 if test $target_os = "haiku"; then
6387     disable memalign
6388     disable posix_memalign
6389 fi
6390
6391 enabled_all dxva2 dxva2api_cobj CoTaskMemFree &&
6392     prepend ffmpeg_libs $($ldflags_filter "-lole32") &&
6393     enable dxva2_lib
6394
6395 # add_dep lib dep
6396 # -> enable ${lib}_deps_${dep}
6397 # -> add $dep to ${lib}_deps only once
6398 add_dep() {
6399     lib=$1
6400     dep=$2
6401     enabled "${lib}_deps_${dep}" && return 0
6402     enable  "${lib}_deps_${dep}"
6403     prepend "${lib}_deps" $dep
6404 }
6405
6406 # merge deps lib components
6407 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
6408 merge_deps() {
6409     lib=$1
6410     shift
6411     for comp in $*; do
6412         enabled $comp || continue
6413         eval "dep=\"\$${comp}_deps\""
6414         for d in $dep; do
6415             add_dep $lib $d
6416         done
6417     done
6418 }
6419
6420 merge_deps libavfilter $FILTER_LIST
6421
6422 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6423
6424 for thread in $THREADS_LIST; do
6425     if enabled $thread; then
6426         test -n "$thread_type" &&
6427             die "ERROR: Only one thread type must be selected." ||
6428             thread_type="$thread"
6429     fi
6430 done
6431
6432 if disabled stdatomic_h; then
6433     if enabled atomics_gcc; then
6434         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6435     elif enabled atomics_win32; then
6436         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6437     elif enabled atomics_suncc; then
6438         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6439     elif enabled pthreads; then
6440         add_compat atomics/pthread/stdatomic.o
6441         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6442     else
6443         enabled threads && die "Threading is enabled, but no atomics are available"
6444         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6445     fi
6446 fi
6447
6448 # Check if requested libraries were found.
6449 for lib in $AUTODETECT_LIBS; do
6450     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6451 done
6452
6453 enabled zlib && add_cppflags -DZLIB_CONST
6454
6455 # conditional library dependencies, in linking order
6456 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6457 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6458 enabled aresample_filter    && prepend avfilter_deps "swresample"
6459 enabled asyncts_filter      && prepend avfilter_deps "avresample"
6460 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6461 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6462 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6463 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6464 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6465 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6466 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6467 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6468 enabled pan_filter          && prepend avfilter_deps "swresample"
6469 enabled pp_filter           && prepend avfilter_deps "postproc"
6470 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6471 enabled resample_filter && prepend avfilter_deps "avresample"
6472 enabled sab_filter          && prepend avfilter_deps "swscale"
6473 enabled scale_filter    && prepend avfilter_deps "swscale"
6474 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6475 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6476 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6477 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6478 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6479 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6480 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6481 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6482 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6483
6484 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6485
6486 enabled opus_decoder    && prepend avcodec_deps "swresample"
6487
6488 expand_deps(){
6489     lib_deps=${1}_deps
6490     eval "deps=\$$lib_deps"
6491     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6492     unique $lib_deps
6493 }
6494
6495 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6496 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6497
6498 map 'expand_deps $v' $LIBRARY_LIST
6499
6500 echo "install prefix            $prefix"
6501 echo "source path               $source_path"
6502 echo "C compiler                $cc"
6503 echo "C library                 $libc_type"
6504 if test "$host_cc" != "$cc"; then
6505     echo "host C compiler           $host_cc"
6506     echo "host C library            $host_libc_type"
6507 fi
6508 echo "ARCH                      $arch ($cpu)"
6509 if test "$build_suffix" != ""; then
6510     echo "build suffix              $build_suffix"
6511 fi
6512 if test "$progs_suffix" != ""; then
6513     echo "progs suffix              $progs_suffix"
6514 fi
6515 if test "$extra_version" != ""; then
6516     echo "version string suffix     $extra_version"
6517 fi
6518 echo "big-endian                ${bigendian-no}"
6519 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6520 if enabled x86; then
6521     echo "${yasmexe}                      ${yasm-no}"
6522     echo "MMX enabled               ${mmx-no}"
6523     echo "MMXEXT enabled            ${mmxext-no}"
6524     echo "3DNow! enabled            ${amd3dnow-no}"
6525     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6526     echo "SSE enabled               ${sse-no}"
6527     echo "SSSE3 enabled             ${ssse3-no}"
6528     echo "AESNI enabled             ${aesni-no}"
6529     echo "AVX enabled               ${avx-no}"
6530     echo "XOP enabled               ${xop-no}"
6531     echo "FMA3 enabled              ${fma3-no}"
6532     echo "FMA4 enabled              ${fma4-no}"
6533     echo "i686 features enabled     ${i686-no}"
6534     echo "CMOV is fast              ${fast_cmov-no}"
6535     echo "EBX available             ${ebx_available-no}"
6536     echo "EBP available             ${ebp_available-no}"
6537 fi
6538 if enabled aarch64; then
6539     echo "NEON enabled              ${neon-no}"
6540     echo "VFP enabled               ${vfp-no}"
6541 fi
6542 if enabled arm; then
6543     echo "ARMv5TE enabled           ${armv5te-no}"
6544     echo "ARMv6 enabled             ${armv6-no}"
6545     echo "ARMv6T2 enabled           ${armv6t2-no}"
6546     echo "VFP enabled               ${vfp-no}"
6547     echo "NEON enabled              ${neon-no}"
6548     echo "THUMB enabled             ${thumb-no}"
6549 fi
6550 if enabled mips; then
6551     echo "MIPS FPU enabled          ${mipsfpu-no}"
6552     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6553     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6554     echo "MIPS MSA enabled          ${msa-no}"
6555     echo "LOONGSON MMI enabled      ${mmi-no}"
6556 fi
6557 if enabled ppc; then
6558     echo "AltiVec enabled           ${altivec-no}"
6559     echo "VSX enabled               ${vsx-no}"
6560     echo "POWER8 enabled            ${power8-no}"
6561     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6562     echo "dcbzl available           ${dcbzl-no}"
6563 fi
6564 echo "debug symbols             ${debug-no}"
6565 echo "strip symbols             ${stripping-no}"
6566 echo "optimize for size         ${small-no}"
6567 echo "optimizations             ${optimizations-no}"
6568 echo "static                    ${static-no}"
6569 echo "shared                    ${shared-no}"
6570 echo "postprocessing support    ${postproc-no}"
6571 echo "new filter support        ${avfilter-no}"
6572 echo "network support           ${network-no}"
6573 echo "threading support         ${thread_type-no}"
6574 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6575 echo "SDL2 support              ${sdl2-no}"
6576 echo "opencl enabled            ${opencl-no}"
6577 echo "JNI support               ${jni-no}"
6578 echo "texi2html enabled         ${texi2html-no}"
6579 echo "perl enabled              ${perl-no}"
6580 echo "pod2man enabled           ${pod2man-no}"
6581 echo "makeinfo enabled          ${makeinfo-no}"
6582 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6583 test -n "$random_seed" &&
6584     echo "random seed               ${random_seed}"
6585 echo
6586
6587 echo "Enabled programs:"
6588 print_enabled '' $PROGRAM_LIST | print_in_columns
6589 echo
6590
6591 echo "External libraries:"
6592 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_in_columns
6593 echo
6594
6595 echo "External libraries providing hardware acceleration:"
6596 print_enabled '' $HWACCEL_LIBRARY_LIST | print_in_columns
6597 echo
6598
6599 echo "Libraries:"
6600 print_enabled '' $LIBRARY_LIST | print_in_columns
6601 echo
6602
6603 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6604     echo "Enabled ${type}s:"
6605     eval list=\$$(toupper $type)_LIST
6606     print_enabled '_*' $list | print_in_columns
6607     echo
6608 done
6609
6610 license="LGPL version 2.1 or later"
6611 if enabled nonfree; then
6612     license="nonfree and unredistributable"
6613 elif enabled gplv3; then
6614     license="GPL version 3 or later"
6615 elif enabled lgplv3; then
6616     license="LGPL version 3 or later"
6617 elif enabled gpl; then
6618     license="GPL version 2 or later"
6619 fi
6620
6621 echo "License: $license"
6622
6623 echo "Creating config.mak, config.h, and doc/config.texi..."
6624
6625 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6626
6627 enabled stripping || strip="echo skipping strip"
6628
6629 config_files="$TMPH config.mak doc/config.texi"
6630
6631 cat > config.mak <<EOF
6632 # Automatically generated by configure - do not modify!
6633 ifndef FFMPEG_CONFIG_MAK
6634 FFMPEG_CONFIG_MAK=1
6635 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6636 prefix=$prefix
6637 LIBDIR=\$(DESTDIR)$libdir
6638 SHLIBDIR=\$(DESTDIR)$shlibdir
6639 INCDIR=\$(DESTDIR)$incdir
6640 BINDIR=\$(DESTDIR)$bindir
6641 DATADIR=\$(DESTDIR)$datadir
6642 DOCDIR=\$(DESTDIR)$docdir
6643 MANDIR=\$(DESTDIR)$mandir
6644 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6645 INSTALL_NAME_DIR=$install_name_dir
6646 SRC_PATH=$source_path
6647 SRC_LINK=$source_link
6648 ifndef MAIN_MAKEFILE
6649 SRC_PATH:=\$(SRC_PATH:.%=..%)
6650 endif
6651 CC_IDENT=$cc_ident
6652 ARCH=$arch
6653 INTRINSICS=$intrinsics
6654 CC=$cc
6655 CXX=$cxx
6656 AS=$as
6657 OBJCC=$objcc
6658 LD=$ld
6659 DEPCC=$dep_cc
6660 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6661 DEPAS=$as
6662 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6663 YASM=$yasmexe
6664 DEPYASM=$yasmexe
6665 AR=$ar
6666 ARFLAGS=$arflags
6667 AR_O=$ar_o
6668 RANLIB=$ranlib
6669 STRIP=$strip
6670 CP=cp -p
6671 LN_S=$ln_s
6672 CPPFLAGS=$CPPFLAGS
6673 CFLAGS=$CFLAGS
6674 CXXFLAGS=$CXXFLAGS
6675 OBJCFLAGS=$OBJCFLAGS
6676 ASFLAGS=$ASFLAGS
6677 AS_C=$AS_C
6678 AS_O=$AS_O
6679 OBJCC_C=$OBJCC_C
6680 OBJCC_E=$OBJCC_E
6681 OBJCC_O=$OBJCC_O
6682 CC_C=$CC_C
6683 CC_E=$CC_E
6684 CC_O=$CC_O
6685 CXX_C=$CXX_C
6686 CXX_O=$CXX_O
6687 LD_O=$LD_O
6688 LD_LIB=$LD_LIB
6689 LD_PATH=$LD_PATH
6690 DLLTOOL=$dlltool
6691 WINDRES=$windres
6692 DEPWINDRES=$dep_cc
6693 DOXYGEN=$doxygen
6694 LDFLAGS=$LDFLAGS
6695 LDEXEFLAGS=$LDEXEFLAGS
6696 LDLIBFLAGS=$LDLIBFLAGS
6697 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
6698 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
6699 YASMFLAGS=$YASMFLAGS
6700 BUILDSUF=$build_suffix
6701 PROGSSUF=$progs_suffix
6702 FULLNAME=$FULLNAME
6703 LIBPREF=$LIBPREF
6704 LIBSUF=$LIBSUF
6705 LIBNAME=$LIBNAME
6706 SLIBPREF=$SLIBPREF
6707 SLIBSUF=$SLIBSUF
6708 EXESUF=$EXESUF
6709 EXTRA_VERSION=$extra_version
6710 CCDEP=$CCDEP
6711 CXXDEP=$CXXDEP
6712 CCDEP_FLAGS=$CCDEP_FLAGS
6713 ASDEP=$ASDEP
6714 ASDEP_FLAGS=$ASDEP_FLAGS
6715 CC_DEPFLAGS=$CC_DEPFLAGS
6716 AS_DEPFLAGS=$AS_DEPFLAGS
6717 HOSTCC=$host_cc
6718 HOSTLD=$host_ld
6719 HOSTCFLAGS=$host_cflags
6720 HOSTCPPFLAGS=$host_cppflags
6721 HOSTEXESUF=$HOSTEXESUF
6722 HOSTLDFLAGS=$host_ldflags
6723 HOSTLIBS=$host_libs
6724 DEPHOSTCC=$host_cc
6725 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
6726 HOSTCCDEP=$HOSTCCDEP
6727 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
6728 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
6729 HOSTCC_C=$HOSTCC_C
6730 HOSTCC_O=$HOSTCC_O
6731 HOSTLD_O=$HOSTLD_O
6732 TARGET_EXEC=$target_exec $target_exec_args
6733 TARGET_PATH=$target_path
6734 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
6735 CFLAGS-ffplay=${sdl2_cflags}
6736 ZLIB=$($ldflags_filter -lz)
6737 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
6738 EXTRALIBS=$extralibs
6739 COMPAT_OBJS=$compat_objs
6740 EXEOBJS=$exeobjs
6741 INSTALL=$install
6742 LIBTARGET=${LIBTARGET}
6743 SLIBNAME=${SLIBNAME}
6744 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
6745 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
6746 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
6747 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
6748 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
6749 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
6750 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
6751 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
6752 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
6753 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
6754 NOREDZONE_FLAGS=$noredzone_flags
6755 EOF
6756
6757 get_version(){
6758     lcname=lib${1}
6759     name=$(toupper $lcname)
6760     file=$source_path/$lcname/version.h
6761     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
6762     enabled raise_major && eval ${name}_VERSION_MAJOR=$((${name}_VERSION_MAJOR+100))
6763     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
6764     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
6765     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
6766     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
6767 }
6768
6769 map 'get_version $v' $LIBRARY_LIST
6770
6771 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> config.mak' $LIBRARY_LIST
6772
6773 print_program_libs(){
6774     eval "program_libs=\$${1}_libs"
6775     eval echo "LIBS-${1}=${program_libs}" >> config.mak
6776 }
6777
6778 map 'print_program_libs $v' $PROGRAM_LIST
6779
6780 cat > $TMPH <<EOF
6781 /* Automatically generated by configure - do not modify! */
6782 #ifndef FFMPEG_CONFIG_H
6783 #define FFMPEG_CONFIG_H
6784 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
6785 #define FFMPEG_LICENSE "$(c_escape $license)"
6786 #define CONFIG_THIS_YEAR 2017
6787 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
6788 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
6789 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
6790 #define av_restrict $_restrict
6791 #define EXTERN_PREFIX "${extern_prefix}"
6792 #define EXTERN_ASM ${extern_prefix}
6793 #define BUILDSUF "$build_suffix"
6794 #define SLIBSUF "$SLIBSUF"
6795 #define HAVE_MMX2 HAVE_MMXEXT
6796 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
6797 EOF
6798
6799 test -n "$assert_level" &&
6800     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
6801
6802 test -n "$malloc_prefix" &&
6803     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
6804
6805 if enabled yasm; then
6806     append config_files $TMPASM
6807     printf '' >$TMPASM
6808 fi
6809
6810 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
6811
6812
6813 mkdir -p doc
6814 mkdir -p tests
6815 mkdir -p tests/api
6816 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
6817
6818 print_config ARCH_   "$config_files" $ARCH_LIST
6819 print_config HAVE_   "$config_files" $HAVE_LIST
6820 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
6821                                      $CONFIG_EXTRA      \
6822                                      $ALL_COMPONENTS    \
6823
6824 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
6825 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
6826
6827 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
6828 cp_if_changed $TMPH config.h
6829 touch .config
6830
6831 enabled yasm && cp_if_changed $TMPASM config.asm
6832
6833 cat > $TMPH <<EOF
6834 /* Generated by ffconf */
6835 #ifndef AVUTIL_AVCONFIG_H
6836 #define AVUTIL_AVCONFIG_H
6837 EOF
6838
6839 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
6840
6841 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
6842
6843 cp_if_changed $TMPH libavutil/avconfig.h
6844
6845 if test -n "$WARNINGS"; then
6846     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
6847     enabled fatal_warnings && exit 1
6848 fi
6849
6850 # generate the lists of enabled components
6851 print_enabled_components(){
6852     file=$1
6853     struct_name=$2
6854     name=$3
6855     shift 3
6856     echo "static const $struct_name *$name[] = {" > $TMPH
6857     for c in $*; do
6858         enabled $c && printf "    &ff_%s,\n" $c >> $TMPH
6859     done
6860     echo "    NULL };" >> $TMPH
6861     cp_if_changed $TMPH $file
6862 }
6863
6864 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
6865 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
6866
6867 # build pkg-config files
6868
6869 lib_version(){
6870     eval printf "\"lib${1}${build_suffix} >= \$LIB$(toupper ${1})_VERSION, \""
6871 }
6872
6873 pkgconfig_generate(){
6874     name=$1
6875     shortname=${name#lib}${build_suffix}
6876     comment=$2
6877     version=$3
6878     libs=$4
6879     requires=$(map 'lib_version $v' $(eval echo \$${name#lib}_deps))
6880     requires=${requires%, }
6881     enabled ${name#lib} || return 0
6882     mkdir -p $name
6883     cat <<EOF > $name/$name${build_suffix}.pc
6884 prefix=$prefix
6885 exec_prefix=\${prefix}
6886 libdir=$libdir
6887 includedir=$incdir
6888
6889 Name: $name
6890 Description: $comment
6891 Version: $version
6892 Requires: $(enabled shared || echo $requires)
6893 Requires.private: $(enabled shared && echo $requires)
6894 Conflicts:
6895 Libs: -L\${libdir} $(enabled rpath && echo "-Wl,-rpath,\${libdir}") -l${shortname} $(enabled shared || echo $libs)
6896 Libs.private: $(enabled shared && echo $libs)
6897 Cflags: -I\${includedir}
6898 EOF
6899
6900 mkdir -p doc/examples/pc-uninstalled
6901 includedir=${source_path}
6902 [ "$includedir" = . ] && includedir="\${pcfiledir}/../../.."
6903     cat <<EOF > doc/examples/pc-uninstalled/${name}-uninstalled.pc
6904 prefix=
6905 exec_prefix=
6906 libdir=\${pcfiledir}/../../../$name
6907 includedir=${includedir}
6908
6909 Name: $name
6910 Description: $comment
6911 Version: $version
6912 Requires: $requires
6913 Conflicts:
6914 Libs: -L\${libdir} -Wl,-rpath,\${libdir} -l${shortname} $(enabled shared || echo $libs)
6915 Cflags: -I\${includedir}
6916 EOF
6917 }
6918
6919 pkgconfig_generate libavutil     "FFmpeg utility library"               "$LIBAVUTIL_VERSION"     "$LIBRT $LIBM"
6920 pkgconfig_generate libavcodec    "FFmpeg codec library"                 "$LIBAVCODEC_VERSION"    "$extralibs"
6921 pkgconfig_generate libavformat   "FFmpeg container format library"      "$LIBAVFORMAT_VERSION"   "$extralibs"
6922 pkgconfig_generate libavdevice   "FFmpeg device handling library"       "$LIBAVDEVICE_VERSION"   "$extralibs"
6923 pkgconfig_generate libavfilter   "FFmpeg audio/video filtering library" "$LIBAVFILTER_VERSION"   "$extralibs"
6924 pkgconfig_generate libpostproc   "FFmpeg postprocessing library"        "$LIBPOSTPROC_VERSION"   ""
6925 pkgconfig_generate libavresample "Libav audio resampling library"       "$LIBAVRESAMPLE_VERSION" "$LIBM"
6926 pkgconfig_generate libswscale    "FFmpeg image rescaling library"       "$LIBSWSCALE_VERSION"    "$LIBM"
6927 pkgconfig_generate libswresample "FFmpeg audio resampling library"      "$LIBSWRESAMPLE_VERSION" "$LIBM $LIBSOXR"