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     decode_audio_example
1465     decode_video_example
1466     demuxing_decoding_example
1467     encode_audio_example
1468     encode_video_example
1469     extract_mvs_example
1470     filter_audio_example
1471     filtering_audio_example
1472     filtering_video_example
1473     http_multiclient_example
1474     metadata_example
1475     muxing_example
1476     qsvdec_example
1477     remuxing_example
1478     resampling_audio_example
1479     scaling_video_example
1480     transcode_aac_example
1481     transcoding_example
1482 "
1483 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1484     bzlib
1485     iconv
1486     libxcb
1487     libxcb_shm
1488     libxcb_shape
1489     libxcb_xfixes
1490     lzma
1491     schannel
1492     sdl
1493     sdl2
1494     securetransport
1495     xlib
1496     zlib
1497 "
1498
1499 EXTERNAL_LIBRARY_GPL_LIST="
1500     frei0r
1501     libcdio
1502     librubberband
1503     libvidstab
1504     libx264
1505     libx265
1506     libxavs
1507     libxvid
1508 "
1509
1510 EXTERNAL_LIBRARY_NONFREE_LIST="
1511     libfdk_aac
1512     openssl
1513 "
1514
1515 EXTERNAL_LIBRARY_VERSION3_LIST="
1516     gmp
1517     libopencore_amrnb
1518     libopencore_amrwb
1519     libvo_amrwbenc
1520 "
1521
1522 EXTERNAL_LIBRARY_GPLV3_LIST="
1523     libsmbclient
1524 "
1525
1526 EXTERNAL_LIBRARY_LIST="
1527     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1528     $EXTERNAL_LIBRARY_GPL_LIST
1529     $EXTERNAL_LIBRARY_NONFREE_LIST
1530     $EXTERNAL_LIBRARY_VERSION3_LIST
1531     $EXTERNAL_LIBRARY_GPLV3_LIST
1532     avisynth
1533     chromaprint
1534     crystalhd
1535     decklink
1536     gcrypt
1537     gnutls
1538     jni
1539     ladspa
1540     libass
1541     libbluray
1542     libbs2b
1543     libcaca
1544     libcelt
1545     libdc1394
1546     libflite
1547     libfontconfig
1548     libfreetype
1549     libfribidi
1550     libgme
1551     libgsm
1552     libiec61883
1553     libilbc
1554     libkvazaar
1555     libmodplug
1556     libmp3lame
1557     libnut
1558     libopencv
1559     libopenh264
1560     libopenjpeg
1561     libopenmpt
1562     libopus
1563     libpulse
1564     librtmp
1565     libschroedinger
1566     libshine
1567     libsmbclient
1568     libsnappy
1569     libsoxr
1570     libspeex
1571     libssh
1572     libtesseract
1573     libtheora
1574     libtwolame
1575     libv4l2
1576     libvorbis
1577     libvpx
1578     libwavpack
1579     libwebp
1580     libzimg
1581     libzmq
1582     libzvbi
1583     mediacodec
1584     netcdf
1585     openal
1586     opencl
1587     opengl
1588     videotoolbox
1589 "
1590 HWACCEL_AUTODETECT_LIBRARY_LIST="
1591     audiotoolbox
1592     cuda
1593     cuvid
1594     d3d11va
1595     dxva2
1596     nvenc
1597     vaapi
1598     vda
1599     vdpau
1600     videotoolbox_hwaccel
1601     xvmc
1602 "
1603
1604 HWACCEL_LIBRARY_NONFREE_LIST="
1605     libnpp
1606 "
1607
1608 HWACCEL_LIBRARY_LIST="
1609     $HWACCEL_AUTODETECT_LIBRARY_LIST
1610     $HWACCEL_LIBRARY_NONFREE_LIST
1611     libmfx
1612     mmal
1613     omx
1614 "
1615
1616 DOCUMENT_LIST="
1617     doc
1618     htmlpages
1619     manpages
1620     podpages
1621     txtpages
1622 "
1623
1624 FEATURE_LIST="
1625     ftrapv
1626     gray
1627     hardcoded_tables
1628     omx_rpi
1629     runtime_cpudetect
1630     safe_bitstream_reader
1631     shared
1632     small
1633     static
1634     swscale_alpha
1635 "
1636
1637 LIBRARY_LIST="
1638     avcodec
1639     avdevice
1640     avfilter
1641     avformat
1642     avresample
1643     avutil
1644     postproc
1645     swresample
1646     swscale
1647 "
1648
1649 LICENSE_LIST="
1650     gpl
1651     nonfree
1652     version3
1653 "
1654
1655 PROGRAM_LIST="
1656     ffplay
1657     ffprobe
1658     ffserver
1659     ffmpeg
1660 "
1661
1662 SUBSYSTEM_LIST="
1663     dct
1664     dwt
1665     error_resilience
1666     faan
1667     fast_unaligned
1668     fft
1669     lsp
1670     lzo
1671     mdct
1672     pixelutils
1673     network
1674     rdft
1675 "
1676
1677 CONFIG_LIST="
1678     $COMPONENT_LIST
1679     $DOCUMENT_LIST
1680     $EXAMPLE_LIST
1681     $EXTERNAL_LIBRARY_LIST
1682     $HWACCEL_LIBRARY_LIST
1683     $FEATURE_LIST
1684     $LICENSE_LIST
1685     $LIBRARY_LIST
1686     $PROGRAM_LIST
1687     $SUBSYSTEM_LIST
1688     fontconfig
1689     memory_poisoning
1690     neon_clobber_test
1691     pic
1692     raise_major
1693     thumb
1694     valgrind_backtrace
1695     xmm_clobber_test
1696 "
1697
1698 THREADS_LIST="
1699     pthreads
1700     os2threads
1701     w32threads
1702 "
1703
1704 ATOMICS_LIST="
1705     atomics_gcc
1706     atomics_suncc
1707     atomics_win32
1708 "
1709
1710 AUTODETECT_LIBS="
1711     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1712     $HWACCEL_AUTODETECT_LIBRARY_LIST
1713     $THREADS_LIST
1714 "
1715
1716 ARCH_LIST="
1717     aarch64
1718     alpha
1719     arm
1720     avr32
1721     avr32_ap
1722     avr32_uc
1723     bfin
1724     ia64
1725     m68k
1726     mips
1727     mips64
1728     parisc
1729     ppc
1730     ppc64
1731     s390
1732     sh4
1733     sparc
1734     sparc64
1735     tilegx
1736     tilepro
1737     tomi
1738     x86
1739     x86_32
1740     x86_64
1741 "
1742
1743 ARCH_EXT_LIST_ARM="
1744     armv5te
1745     armv6
1746     armv6t2
1747     armv8
1748     neon
1749     vfp
1750     vfpv3
1751     setend
1752 "
1753
1754 ARCH_EXT_LIST_MIPS="
1755     mipsfpu
1756     mips32r2
1757     mips32r5
1758     mips64r2
1759     mips32r6
1760     mips64r6
1761     mipsdsp
1762     mipsdspr2
1763     msa
1764 "
1765
1766 ARCH_EXT_LIST_LOONGSON="
1767     loongson2
1768     loongson3
1769     mmi
1770 "
1771
1772 ARCH_EXT_LIST_X86_SIMD="
1773     aesni
1774     amd3dnow
1775     amd3dnowext
1776     avx
1777     avx2
1778     fma3
1779     fma4
1780     mmx
1781     mmxext
1782     sse
1783     sse2
1784     sse3
1785     sse4
1786     sse42
1787     ssse3
1788     xop
1789 "
1790
1791 ARCH_EXT_LIST_PPC="
1792     altivec
1793     dcbzl
1794     ldbrx
1795     power8
1796     ppc4xx
1797     vsx
1798 "
1799
1800 ARCH_EXT_LIST_X86="
1801     $ARCH_EXT_LIST_X86_SIMD
1802     cpunop
1803     i686
1804 "
1805
1806 ARCH_EXT_LIST="
1807     $ARCH_EXT_LIST_ARM
1808     $ARCH_EXT_LIST_PPC
1809     $ARCH_EXT_LIST_X86
1810     $ARCH_EXT_LIST_MIPS
1811     $ARCH_EXT_LIST_LOONGSON
1812 "
1813
1814 ARCH_FEATURES="
1815     aligned_stack
1816     fast_64bit
1817     fast_clz
1818     fast_cmov
1819     local_aligned_8
1820     local_aligned_16
1821     local_aligned_32
1822     simd_align_16
1823     simd_align_32
1824 "
1825
1826 BUILTIN_LIST="
1827     atomic_cas_ptr
1828     machine_rw_barrier
1829     MemoryBarrier
1830     mm_empty
1831     rdtsc
1832     sarestart
1833     sem_timedwait
1834     sync_val_compare_and_swap
1835 "
1836 HAVE_LIST_CMDLINE="
1837     inline_asm
1838     symver
1839     yasm
1840 "
1841
1842 HAVE_LIST_PUB="
1843     bigendian
1844     fast_unaligned
1845 "
1846
1847 HEADERS_LIST="
1848     alsa_asoundlib_h
1849     altivec_h
1850     arpa_inet_h
1851     asm_types_h
1852     cdio_paranoia_h
1853     cdio_paranoia_paranoia_h
1854     cuda_h
1855     dispatch_dispatch_h
1856     dev_bktr_ioctl_bt848_h
1857     dev_bktr_ioctl_meteor_h
1858     dev_ic_bt8xx_h
1859     dev_video_bktr_ioctl_bt848_h
1860     dev_video_meteor_ioctl_meteor_h
1861     direct_h
1862     dirent_h
1863     dlfcn_h
1864     d3d11_h
1865     dxva_h
1866     ES2_gl_h
1867     gsm_h
1868     io_h
1869     mach_mach_time_h
1870     machine_ioctl_bt848_h
1871     machine_ioctl_meteor_h
1872     malloc_h
1873     opencv2_core_core_c_h
1874     openjpeg_2_1_openjpeg_h
1875     openjpeg_2_0_openjpeg_h
1876     openjpeg_1_5_openjpeg_h
1877     OpenGL_gl3_h
1878     poll_h
1879     sndio_h
1880     soundcard_h
1881     stdatomic_h
1882     sys_mman_h
1883     sys_param_h
1884     sys_resource_h
1885     sys_select_h
1886     sys_soundcard_h
1887     sys_time_h
1888     sys_un_h
1889     sys_videoio_h
1890     termios_h
1891     udplite_h
1892     unistd_h
1893     valgrind_valgrind_h
1894     windows_h
1895     winsock2_h
1896 "
1897
1898 INTRINSICS_LIST="
1899     intrinsics_neon
1900 "
1901
1902 COMPLEX_FUNCS="
1903     cabs
1904     cexp
1905 "
1906
1907 MATH_FUNCS="
1908     atanf
1909     atan2f
1910     cbrt
1911     cbrtf
1912     copysign
1913     cosf
1914     erf
1915     exp2
1916     exp2f
1917     expf
1918     hypot
1919     isfinite
1920     isinf
1921     isnan
1922     ldexpf
1923     llrint
1924     llrintf
1925     log2
1926     log2f
1927     log10f
1928     lrint
1929     lrintf
1930     powf
1931     rint
1932     round
1933     roundf
1934     sinf
1935     trunc
1936     truncf
1937 "
1938
1939 SYSTEM_FUNCS="
1940     access
1941     aligned_malloc
1942     arc4random
1943     clock_gettime
1944     closesocket
1945     CommandLineToArgvW
1946     CoTaskMemFree
1947     CryptGenRandom
1948     dlopen
1949     fcntl
1950     flt_lim
1951     fork
1952     getaddrinfo
1953     gethrtime
1954     getopt
1955     GetProcessAffinityMask
1956     GetProcessMemoryInfo
1957     GetProcessTimes
1958     getrusage
1959     GetSystemTimeAsFileTime
1960     gettimeofday
1961     glob
1962     glXGetProcAddress
1963     gmtime_r
1964     inet_aton
1965     isatty
1966     jack_port_get_latency_range
1967     kbhit
1968     LoadLibrary
1969     localtime_r
1970     lstat
1971     lzo1x_999_compress
1972     mach_absolute_time
1973     MapViewOfFile
1974     memalign
1975     mkstemp
1976     mmap
1977     mprotect
1978     nanosleep
1979     PeekNamedPipe
1980     posix_memalign
1981     pthread_cancel
1982     sched_getaffinity
1983     SetConsoleTextAttribute
1984     SetConsoleCtrlHandler
1985     setmode
1986     setrlimit
1987     Sleep
1988     strerror_r
1989     sysconf
1990     sysctl
1991     usleep
1992     UTGetOSTypeFromString
1993     VirtualAlloc
1994     wglGetProcAddress
1995 "
1996
1997 TOOLCHAIN_FEATURES="
1998     as_dn_directive
1999     as_fpu_directive
2000     as_func
2001     as_object_arch
2002     asm_mod_q
2003     attribute_may_alias
2004     attribute_packed
2005     ebp_available
2006     ebx_available
2007     gnu_as
2008     gnu_windres
2009     ibm_asm
2010     inline_asm_direct_symbol_refs
2011     inline_asm_labels
2012     inline_asm_nonlocal_labels
2013     pragma_deprecated
2014     rsync_contimeout
2015     symver_asm_label
2016     symver_gnu_asm
2017     vfp_args
2018     xform_asm
2019     xmm_clobbers
2020 "
2021
2022 TYPES_LIST="
2023     CONDITION_VARIABLE_Ptr
2024     socklen_t
2025     struct_addrinfo
2026     struct_group_source_req
2027     struct_ip_mreq_source
2028     struct_ipv6_mreq
2029     struct_msghdr_msg_flags
2030     struct_pollfd
2031     struct_rusage_ru_maxrss
2032     struct_sctp_event_subscribe
2033     struct_sockaddr_in6
2034     struct_sockaddr_sa_len
2035     struct_sockaddr_storage
2036     struct_stat_st_mtim_tv_nsec
2037     struct_v4l2_frmivalenum_discrete
2038 "
2039
2040 HAVE_LIST="
2041     $ARCH_EXT_LIST
2042     $(add_suffix _external $ARCH_EXT_LIST)
2043     $(add_suffix _inline   $ARCH_EXT_LIST)
2044     $ARCH_FEATURES
2045     $ATOMICS_LIST
2046     $BUILTIN_LIST
2047     $COMPLEX_FUNCS
2048     $HAVE_LIST_CMDLINE
2049     $HAVE_LIST_PUB
2050     $HEADERS_LIST
2051     $INTRINSICS_LIST
2052     $MATH_FUNCS
2053     $SYSTEM_FUNCS
2054     $THREADS_LIST
2055     $TOOLCHAIN_FEATURES
2056     $TYPES_LIST
2057     atomics_native
2058     dos_paths
2059     dxva2_lib
2060     dxva2api_cobj
2061     libc_msvcrt
2062     libdc1394_1
2063     libdc1394_2
2064     makeinfo
2065     makeinfo_html
2066     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2067     perl
2068     pod2man
2069     sdl2
2070     section_data_rel_ro
2071     texi2html
2072     threads
2073     vaapi_drm
2074     vaapi_x11
2075     vdpau_x11
2076     winrt
2077     xlib
2078 "
2079
2080 # options emitted with CONFIG_ prefix but not available on the command line
2081 CONFIG_EXTRA="
2082     aandcttables
2083     ac3dsp
2084     audio_frame_queue
2085     audiodsp
2086     blockdsp
2087     bswapdsp
2088     cabac
2089     dirac_parse
2090     dvprofile
2091     exif
2092     faandct
2093     faanidct
2094     fdctdsp
2095     flacdsp
2096     fmtconvert
2097     frame_thread_encoder
2098     g722dsp
2099     golomb
2100     gplv3
2101     h263dsp
2102     h264chroma
2103     h264dsp
2104     h264parse
2105     h264pred
2106     h264qpel
2107     hpeldsp
2108     huffman
2109     huffyuvdsp
2110     huffyuvencdsp
2111     idctdsp
2112     iirfilter
2113     mdct15
2114     intrax8
2115     iso_media
2116     ividsp
2117     jpegtables
2118     lgplv3
2119     libx262
2120     llauddsp
2121     llviddsp
2122     llvidencdsp
2123     lpc
2124     lzf
2125     me_cmp
2126     mpeg_er
2127     mpegaudio
2128     mpegaudiodsp
2129     mpegvideo
2130     mpegvideoenc
2131     mss34dsp
2132     pixblockdsp
2133     qpeldsp
2134     qsv
2135     qsvdec
2136     qsvenc
2137     rangecoder
2138     riffdec
2139     riffenc
2140     rtpdec
2141     rtpenc_chain
2142     rv34dsp
2143     sinewin
2144     snappy
2145     srtp
2146     startcode
2147     texturedsp
2148     texturedspenc
2149     tpeldsp
2150     vaapi_encode
2151     vc1dsp
2152     videodsp
2153     vp3dsp
2154     vp56dsp
2155     vp8dsp
2156     vt_bt2020
2157     wma_freqs
2158     wmv2dsp
2159 "
2160
2161 CMDLINE_SELECT="
2162     $ARCH_EXT_LIST
2163     $CONFIG_LIST
2164     $HAVE_LIST_CMDLINE
2165     $THREADS_LIST
2166     asm
2167     cross_compile
2168     debug
2169     extra_warnings
2170     logging
2171     lto
2172     optimizations
2173     rpath
2174     stripping
2175 "
2176
2177 PATHS_LIST="
2178     bindir
2179     datadir
2180     docdir
2181     incdir
2182     libdir
2183     mandir
2184     pkgconfigdir
2185     prefix
2186     shlibdir
2187     install_name_dir
2188 "
2189
2190 CMDLINE_SET="
2191     $PATHS_LIST
2192     ar
2193     arch
2194     as
2195     assert_level
2196     build_suffix
2197     cc
2198     objcc
2199     cpu
2200     cross_prefix
2201     custom_allocator
2202     cxx
2203     dep_cc
2204     doxygen
2205     env
2206     extra_version
2207     gas
2208     host_cc
2209     host_cflags
2210     host_ld
2211     host_ldflags
2212     host_libs
2213     host_os
2214     install
2215     ld
2216     ln_s
2217     logfile
2218     malloc_prefix
2219     nm
2220     optflags
2221     pkg_config
2222     pkg_config_flags
2223     progs_suffix
2224     random_seed
2225     ranlib
2226     samples
2227     strip
2228     sws_max_filter_size
2229     sysinclude
2230     sysroot
2231     target_exec
2232     target_os
2233     target_path
2234     target_samples
2235     tempprefix
2236     toolchain
2237     valgrind
2238     yasmexe
2239 "
2240
2241 CMDLINE_APPEND="
2242     extra_cflags
2243     extra_cxxflags
2244     extra_objcflags
2245     host_cppflags
2246 "
2247
2248 # code dependency declarations
2249
2250 # architecture extensions
2251
2252 armv5te_deps="arm"
2253 armv6_deps="arm"
2254 armv6t2_deps="arm"
2255 armv8_deps="aarch64"
2256 neon_deps_any="aarch64 arm"
2257 intrinsics_neon_deps="neon"
2258 vfp_deps_any="aarch64 arm"
2259 vfpv3_deps="vfp"
2260 setend_deps="arm"
2261
2262 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2263
2264 loongson2_deps="mips"
2265 loongson3_deps="mips"
2266 mipsfpu_deps="mips"
2267 mipsdsp_deps="mips"
2268 mipsdspr2_deps="mips"
2269 mips32r2_deps="mips"
2270 mips32r5_deps="mips"
2271 mips32r6_deps="mips"
2272 mips64r2_deps="mips"
2273 mips64r6_deps="mips"
2274 msa_deps="mipsfpu"
2275 mmi_deps="mips"
2276
2277 altivec_deps="ppc"
2278 dcbzl_deps="ppc"
2279 ldbrx_deps="ppc"
2280 ppc4xx_deps="ppc"
2281 vsx_deps="altivec"
2282 power8_deps="vsx"
2283
2284 cpunop_deps="i686"
2285 x86_64_select="i686"
2286 x86_64_suggest="fast_cmov"
2287
2288 amd3dnow_deps="mmx"
2289 amd3dnowext_deps="amd3dnow"
2290 i686_deps="x86"
2291 mmx_deps="x86"
2292 mmxext_deps="mmx"
2293 sse_deps="mmxext"
2294 sse2_deps="sse"
2295 sse3_deps="sse2"
2296 ssse3_deps="sse3"
2297 sse4_deps="ssse3"
2298 sse42_deps="sse4"
2299 aesni_deps="sse42"
2300 avx_deps="sse42"
2301 xop_deps="avx"
2302 fma3_deps="avx"
2303 fma4_deps="avx"
2304 avx2_deps="avx"
2305
2306 mmx_external_deps="yasm"
2307 mmx_inline_deps="inline_asm"
2308 mmx_suggest="mmx_external mmx_inline"
2309
2310 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2311     eval dep=\$${ext}_deps
2312     eval ${ext}_external_deps='"${dep}_external"'
2313     eval ${ext}_inline_deps='"${dep}_inline"'
2314     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2315 done
2316
2317 aligned_stack_if_any="aarch64 ppc x86"
2318 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2319 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2320 fast_unaligned_if_any="aarch64 ppc x86"
2321 simd_align_16_if_any="altivec neon sse"
2322 simd_align_32_if_any="avx"
2323
2324 # system capabilities
2325 symver_if_any="symver_asm_label symver_gnu_asm"
2326 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
2327
2328 # threading support
2329 atomics_gcc_if="sync_val_compare_and_swap"
2330 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2331 atomics_win32_if="MemoryBarrier"
2332 atomics_native_if_any="$ATOMICS_LIST"
2333 w32threads_deps="atomics_native"
2334 threads_if_any="$THREADS_LIST"
2335
2336 # subsystems
2337 dct_select="rdft"
2338 dirac_parse_select="golomb"
2339 error_resilience_select="me_cmp"
2340 faandct_deps="faan fdctdsp"
2341 faanidct_deps="faan idctdsp"
2342 h264dsp_select="startcode"
2343 frame_thread_encoder_deps="encoders threads"
2344 intrax8_select="blockdsp idctdsp"
2345 mdct_select="fft"
2346 mdct15_select="fft"
2347 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2348 mpeg_er_select="error_resilience"
2349 mpegaudio_select="mpegaudiodsp"
2350 mpegaudiodsp_select="dct"
2351 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2352 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2353 vc1dsp_select="h264chroma qpeldsp startcode"
2354 rdft_select="fft"
2355
2356 # decoders / encoders
2357 aac_decoder_select="mdct15 mdct sinewin"
2358 aac_fixed_decoder_select="mdct sinewin"
2359 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2360 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2361 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2362 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2363 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2364 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2365 adpcm_g722_decoder_select="g722dsp"
2366 adpcm_g722_encoder_select="g722dsp"
2367 aic_decoder_select="golomb idctdsp"
2368 alac_encoder_select="lpc"
2369 als_decoder_select="bswapdsp"
2370 amrnb_decoder_select="lsp"
2371 amrwb_decoder_select="lsp"
2372 amv_decoder_select="sp5x_decoder exif"
2373 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2374 ape_decoder_select="bswapdsp llauddsp"
2375 apng_decoder_select="zlib"
2376 apng_encoder_select="llvidencdsp zlib"
2377 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2378 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2379 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2380 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2381 atrac1_decoder_select="mdct sinewin"
2382 atrac3_decoder_select="mdct"
2383 atrac3p_decoder_select="mdct sinewin"
2384 avrn_decoder_select="exif jpegtables"
2385 bink_decoder_select="blockdsp hpeldsp"
2386 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2387 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2388 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2389 cllc_decoder_select="bswapdsp"
2390 comfortnoise_encoder_select="lpc"
2391 cook_decoder_select="audiodsp mdct sinewin"
2392 cscd_decoder_select="lzo"
2393 cscd_decoder_suggest="zlib"
2394 dca_decoder_select="mdct"
2395 dds_decoder_select="texturedsp"
2396 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2397 dnxhd_decoder_select="blockdsp idctdsp"
2398 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2399 dvvideo_decoder_select="dvprofile idctdsp"
2400 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2401 dxa_decoder_select="zlib"
2402 dxv_decoder_select="lzf texturedsp"
2403 eac3_decoder_select="ac3_decoder"
2404 eac3_encoder_select="ac3_encoder"
2405 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2406 eatgq_decoder_select="aandcttables"
2407 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2408 exr_decoder_select="zlib"
2409 ffv1_decoder_select="golomb rangecoder"
2410 ffv1_encoder_select="rangecoder"
2411 ffvhuff_decoder_select="huffyuv_decoder"
2412 ffvhuff_encoder_select="huffyuv_encoder"
2413 fic_decoder_select="golomb"
2414 flac_decoder_select="flacdsp golomb"
2415 flac_encoder_select="bswapdsp flacdsp golomb lpc"
2416 flashsv2_decoder_select="zlib"
2417 flashsv2_encoder_select="zlib"
2418 flashsv_decoder_select="zlib"
2419 flashsv_encoder_select="zlib"
2420 flv_decoder_select="h263_decoder"
2421 flv_encoder_select="h263_encoder"
2422 fourxm_decoder_select="blockdsp bswapdsp"
2423 fraps_decoder_select="bswapdsp huffman"
2424 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2425 g729_decoder_select="audiodsp"
2426 h261_decoder_select="mpegvideo"
2427 h261_encoder_select="aandcttables mpegvideoenc"
2428 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2429 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2430 h263i_decoder_select="h263_decoder"
2431 h263p_decoder_select="h263_decoder"
2432 h263p_encoder_select="h263_encoder"
2433 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2434 h264_decoder_suggest="error_resilience"
2435 hap_decoder_select="snappy texturedsp"
2436 hap_encoder_deps="libsnappy"
2437 hap_encoder_select="texturedspenc"
2438 hevc_decoder_select="bswapdsp cabac golomb videodsp"
2439 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2440 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2441 iac_decoder_select="imc_decoder"
2442 imc_decoder_select="bswapdsp fft mdct sinewin"
2443 indeo3_decoder_select="hpeldsp"
2444 indeo4_decoder_select="ividsp"
2445 indeo5_decoder_select="ividsp"
2446 interplay_video_decoder_select="hpeldsp"
2447 jpegls_decoder_select="golomb mjpeg_decoder"
2448 jpegls_encoder_select="golomb"
2449 jv_decoder_select="blockdsp"
2450 lagarith_decoder_select="llviddsp"
2451 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2452 loco_decoder_select="golomb"
2453 magicyuv_decoder_select="llviddsp"
2454 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2455 metasound_decoder_select="lsp mdct sinewin"
2456 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2457 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2458 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2459 mjpegb_decoder_select="mjpeg_decoder"
2460 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2461 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2462 mlp_decoder_select="mlp_parser"
2463 motionpixels_decoder_select="bswapdsp"
2464 mp1_decoder_select="mpegaudio"
2465 mp1float_decoder_select="mpegaudio"
2466 mp2_decoder_select="mpegaudio"
2467 mp2float_decoder_select="mpegaudio"
2468 mp3_decoder_select="mpegaudio"
2469 mp3adu_decoder_select="mpegaudio"
2470 mp3adufloat_decoder_select="mpegaudio"
2471 mp3float_decoder_select="mpegaudio"
2472 mp3on4_decoder_select="mpegaudio"
2473 mp3on4float_decoder_select="mpegaudio"
2474 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2475 mpc8_decoder_select="mpegaudiodsp"
2476 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2477 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2478 mpegvideo_decoder_select="mpegvideo"
2479 mpeg1video_decoder_select="mpegvideo"
2480 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2481 mpeg2video_decoder_select="mpegvideo"
2482 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2483 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2484 mpeg4_encoder_select="h263_encoder"
2485 msa1_decoder_select="mss34dsp"
2486 msmpeg4v1_decoder_select="h263_decoder"
2487 msmpeg4v2_decoder_select="h263_decoder"
2488 msmpeg4v2_encoder_select="h263_encoder"
2489 msmpeg4v3_decoder_select="h263_decoder"
2490 msmpeg4v3_encoder_select="h263_encoder"
2491 mss2_decoder_select="vc1_decoder mpegvideo"
2492 mts2_decoder_select="mss34dsp"
2493 mxpeg_decoder_select="mjpeg_decoder"
2494 nellymoser_decoder_select="mdct sinewin"
2495 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2496 nuv_decoder_select="idctdsp lzo"
2497 on2avc_decoder_select="mdct"
2498 opus_decoder_deps="swresample"
2499 opus_decoder_select="mdct15"
2500 opus_encoder_select="audio_frame_queue mdct15"
2501 png_decoder_select="zlib"
2502 png_encoder_select="llvidencdsp zlib"
2503 prores_decoder_select="blockdsp idctdsp"
2504 prores_encoder_select="fdctdsp"
2505 qcelp_decoder_select="lsp"
2506 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2507 ra_144_decoder_select="audiodsp"
2508 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2509 ralf_decoder_select="golomb"
2510 rawvideo_decoder_select="bswapdsp"
2511 rscc_decoder_select="zlib"
2512 rtjpeg_decoder_select="me_cmp"
2513 rv10_decoder_select="h263_decoder"
2514 rv10_encoder_select="h263_encoder"
2515 rv20_decoder_select="h263_decoder"
2516 rv20_encoder_select="h263_encoder"
2517 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2518 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2519 screenpresso_decoder_select="zlib"
2520 shorten_decoder_select="golomb bswapdsp"
2521 sipr_decoder_select="lsp"
2522 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2523 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2524 sonic_decoder_select="golomb rangecoder"
2525 sonic_encoder_select="golomb rangecoder"
2526 sonic_ls_encoder_select="golomb rangecoder"
2527 sp5x_decoder_select="mjpeg_decoder"
2528 svq1_decoder_select="hpeldsp"
2529 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2530 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2531 svq3_decoder_suggest="zlib"
2532 tak_decoder_select="audiodsp"
2533 tdsc_decoder_select="zlib mjpeg_decoder"
2534 theora_decoder_select="vp3_decoder"
2535 thp_decoder_select="mjpeg_decoder"
2536 tiff_decoder_suggest="zlib lzma"
2537 tiff_encoder_suggest="zlib"
2538 truehd_decoder_select="mlp_parser"
2539 truemotion2_decoder_select="bswapdsp"
2540 truespeech_decoder_select="bswapdsp"
2541 tscc_decoder_select="zlib"
2542 twinvq_decoder_select="mdct lsp sinewin"
2543 txd_decoder_select="texturedsp"
2544 utvideo_decoder_select="bswapdsp llviddsp"
2545 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2546 vble_decoder_select="llviddsp"
2547 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2548 vc1_qsv_decoder_deps="libmfx"
2549 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel"
2550 vc1image_decoder_select="vc1_decoder"
2551 vorbis_decoder_select="mdct"
2552 vorbis_encoder_select="mdct"
2553 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2554 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2555 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2556 vp6a_decoder_select="vp6_decoder"
2557 vp6f_decoder_select="vp6_decoder"
2558 vp7_decoder_select="h264pred videodsp vp8dsp"
2559 vp8_decoder_select="h264pred videodsp vp8dsp"
2560 vp9_decoder_select="videodsp vp9_parser"
2561 webp_decoder_select="vp8_decoder exif"
2562 wmalossless_decoder_select="llauddsp"
2563 wmapro_decoder_select="mdct sinewin wma_freqs"
2564 wmav1_decoder_select="mdct sinewin wma_freqs"
2565 wmav1_encoder_select="mdct sinewin wma_freqs"
2566 wmav2_decoder_select="mdct sinewin wma_freqs"
2567 wmav2_encoder_select="mdct sinewin wma_freqs"
2568 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2569 wmv1_decoder_select="h263_decoder"
2570 wmv1_encoder_select="h263_encoder"
2571 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2572 wmv2_encoder_select="h263_encoder wmv2dsp"
2573 wmv3_decoder_select="vc1_decoder"
2574 wmv3image_decoder_select="wmv3_decoder"
2575 xma1_decoder_select="wmapro_decoder"
2576 xma2_decoder_select="wmapro_decoder"
2577 zerocodec_decoder_select="zlib"
2578 zlib_decoder_select="zlib"
2579 zlib_encoder_select="zlib"
2580 zmbv_decoder_select="zlib"
2581 zmbv_encoder_select="zlib"
2582
2583 # platform codecs
2584 audiotoolbox_deps="AudioToolbox_AudioToolbox_h"
2585 audiotoolbox_extralibs="-framework CoreFoundation -framework AudioToolbox -framework CoreMedia"
2586
2587 # hardware accelerators
2588 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2589 cuda_deps_any="dlopen LoadLibrary"
2590 cuvid_deps="cuda"
2591 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2592 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2593 dxva2_extralibs="-luser32"
2594 vaapi_deps="va_va_h"
2595 vda_framework_deps="VideoDecodeAcceleration_VDADecoder_h"
2596 vda_framework_extralibs="-framework VideoDecodeAcceleration"
2597 vda_deps="vda_framework pthreads"
2598 vda_extralibs="-framework CoreFoundation -framework QuartzCore"
2599 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2600 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2601 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2602 xvmc_deps="X11_extensions_XvMClib_h"
2603
2604 h263_vaapi_hwaccel_deps="vaapi"
2605 h263_vaapi_hwaccel_select="h263_decoder"
2606 h263_videotoolbox_hwaccel_deps="videotoolbox"
2607 h263_videotoolbox_hwaccel_select="h263_decoder"
2608 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2609 h264_cuvid_hwaccel_deps="cuda cuvid"
2610 h264_cuvid_hwaccel_select="h264_cuvid_decoder"
2611 h264_d3d11va_hwaccel_deps="d3d11va"
2612 h264_d3d11va_hwaccel_select="h264_decoder"
2613 h264_dxva2_hwaccel_deps="dxva2"
2614 h264_dxva2_hwaccel_select="h264_decoder"
2615 h264_mediacodec_decoder_deps="mediacodec"
2616 h264_mediacodec_hwaccel_deps="mediacodec"
2617 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2618 h264_mmal_decoder_deps="mmal"
2619 h264_mmal_decoder_select="mmal"
2620 h264_mmal_hwaccel_deps="mmal"
2621 h264_omx_encoder_deps="omx"
2622 h264_qsv_hwaccel_deps="libmfx"
2623 h264_vaapi_hwaccel_deps="vaapi"
2624 h264_vaapi_hwaccel_select="h264_decoder"
2625 h264_vda_decoder_deps="vda"
2626 h264_vda_decoder_select="h264_decoder"
2627 h264_vda_hwaccel_deps="vda"
2628 h264_vda_hwaccel_select="h264_decoder"
2629 h264_vda_old_hwaccel_deps="vda"
2630 h264_vda_old_hwaccel_select="h264_decoder"
2631 h264_vdpau_decoder_deps="vdpau"
2632 h264_vdpau_decoder_select="h264_decoder"
2633 h264_vdpau_hwaccel_deps="vdpau"
2634 h264_vdpau_hwaccel_select="h264_decoder"
2635 h264_videotoolbox_hwaccel_deps="videotoolbox"
2636 h264_videotoolbox_hwaccel_select="h264_decoder"
2637 hevc_cuvid_hwaccel_deps="cuda cuvid"
2638 hevc_cuvid_hwaccel_select="hevc_cuvid_decoder"
2639 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2640 hevc_d3d11va_hwaccel_select="hevc_decoder"
2641 hevc_mediacodec_decoder_deps="mediacodec"
2642 hevc_mediacodec_hwaccel_deps="mediacodec"
2643 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2644 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2645 hevc_dxva2_hwaccel_select="hevc_decoder"
2646 hevc_qsv_hwaccel_deps="libmfx"
2647 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2648 hevc_vaapi_hwaccel_select="hevc_decoder"
2649 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2650 hevc_vdpau_hwaccel_select="hevc_decoder"
2651 mjpeg_cuvid_hwaccel_deps="cuda cuvid"
2652 mjpeg_cuvid_hwaccel_select="mjpeg_cuvid_decoder"
2653 mpeg_vdpau_decoder_deps="vdpau"
2654 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2655 mpeg_xvmc_hwaccel_deps="xvmc"
2656 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2657 mpeg1_cuvid_hwaccel_deps="cuda cuvid"
2658 mpeg1_cuvid_hwaccel_select="mpeg1_cuvid_decoder"
2659 mpeg1_vdpau_decoder_deps="vdpau"
2660 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2661 mpeg1_vdpau_hwaccel_deps="vdpau"
2662 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2663 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2664 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2665 mpeg1_xvmc_hwaccel_deps="xvmc"
2666 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2667 mpeg2_crystalhd_decoder_select="crystalhd"
2668 mpeg2_cuvid_hwaccel_deps="cuda cuvid"
2669 mpeg2_cuvid_hwaccel_select="mpeg2_cuvid_decoder"
2670 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2671 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2672 mpeg2_dxva2_hwaccel_deps="dxva2"
2673 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2674 mpeg2_mmal_decoder_deps="mmal"
2675 mpeg2_mmal_decoder_select="mmal"
2676 mpeg2_mmal_hwaccel_deps="mmal"
2677 mpeg2_qsv_hwaccel_deps="libmfx"
2678 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2679 mpeg2_vaapi_hwaccel_deps="vaapi"
2680 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2681 mpeg2_vdpau_hwaccel_deps="vdpau"
2682 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2683 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2684 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2685 mpeg2_xvmc_hwaccel_deps="xvmc"
2686 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2687 mpeg4_crystalhd_decoder_select="crystalhd"
2688 mpeg4_cuvid_hwaccel_deps="cuda cuvid"
2689 mpeg4_cuvid_hwaccel_select="mpeg4_cuvid_decoder"
2690 mpeg4_mediacodec_decoder_deps="mediacodec"
2691 mpeg4_mediacodec_hwaccel_deps="mediacodec"
2692 mpeg4_mmal_decoder_deps="mmal"
2693 mpeg4_mmal_decoder_select="mmal"
2694 mpeg4_mmal_hwaccel_deps="mmal"
2695 mpeg4_omx_encoder_deps="omx"
2696 mpeg4_vaapi_hwaccel_deps="vaapi"
2697 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2698 mpeg4_vdpau_decoder_deps="vdpau"
2699 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2700 mpeg4_vdpau_hwaccel_deps="vdpau"
2701 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2702 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2703 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2704 msmpeg4_crystalhd_decoder_select="crystalhd"
2705 vc1_crystalhd_decoder_select="crystalhd"
2706 vc1_cuvid_hwaccel_deps="cuda cuvid"
2707 vc1_cuvid_hwaccel_select="vc1_cuvid_decoder"
2708 vc1_d3d11va_hwaccel_deps="d3d11va"
2709 vc1_d3d11va_hwaccel_select="vc1_decoder"
2710 vc1_dxva2_hwaccel_deps="dxva2"
2711 vc1_dxva2_hwaccel_select="vc1_decoder"
2712 vc1_mmal_decoder_deps="mmal"
2713 vc1_mmal_decoder_select="mmal"
2714 vc1_mmal_hwaccel_deps="mmal"
2715 vc1_qsv_hwaccel_deps="libmfx"
2716 vc1_qsv_hwaccel_select="qsvdec_vc1"
2717 vc1_vaapi_hwaccel_deps="vaapi"
2718 vc1_vaapi_hwaccel_select="vc1_decoder"
2719 vc1_vdpau_decoder_deps="vdpau"
2720 vc1_vdpau_decoder_select="vc1_decoder"
2721 vc1_vdpau_hwaccel_deps="vdpau"
2722 vc1_vdpau_hwaccel_select="vc1_decoder"
2723 vp8_cuvid_hwaccel_deps="cuda cuvid"
2724 vp8_cuvid_hwaccel_select="vp8_cuvid_decoder"
2725 vp9_cuvid_hwaccel_deps="cuda cuvid"
2726 vp9_cuvid_hwaccel_select="vp9_cuvid_decoder"
2727 vp8_mediacodec_decoder_deps="mediacodec"
2728 vp8_mediacodec_hwaccel_deps="mediacodec"
2729 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2730 vp9_d3d11va_hwaccel_select="vp9_decoder"
2731 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2732 vp9_dxva2_hwaccel_select="vp9_decoder"
2733 vp9_mediacodec_decoder_deps="mediacodec"
2734 vp9_mediacodec_hwaccel_deps="mediacodec"
2735 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2736 vp9_vaapi_hwaccel_select="vp9_decoder"
2737 wmv3_crystalhd_decoder_select="crystalhd"
2738 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2739 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2740 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2741 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2742 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2743
2744 # hardware-accelerated codecs
2745 omx_deps="dlopen pthreads"
2746 omx_extralibs='$ldl'
2747 qsvdec_select="qsv"
2748 qsvenc_select="qsv"
2749 vaapi_encode_deps="vaapi"
2750
2751 hwupload_cuda_filter_deps="cuda"
2752 scale_npp_filter_deps="cuda libnpp"
2753
2754 nvenc_deps="cuda"
2755 nvenc_deps_any="dlopen LoadLibrary"
2756 nvenc_encoder_deps="nvenc"
2757 h264_cuvid_decoder_deps="cuda cuvid"
2758 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2759 h264_nvenc_encoder_deps="nvenc"
2760 h264_qsv_decoder_deps="libmfx"
2761 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2762 h264_qsv_encoder_deps="libmfx"
2763 h264_qsv_encoder_select="qsvenc"
2764 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2765 h264_vaapi_encoder_select="vaapi_encode golomb"
2766
2767 hevc_cuvid_decoder_deps="cuda cuvid"
2768 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2769 hevc_nvenc_encoder_deps="nvenc"
2770 hevc_qsv_decoder_deps="libmfx"
2771 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2772 hevc_qsv_encoder_deps="libmfx"
2773 hevc_qsv_encoder_select="qsvenc"
2774 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2775 hevc_vaapi_encoder_select="vaapi_encode golomb"
2776 mjpeg_cuvid_decoder_deps="cuda cuvid"
2777 mpeg1_cuvid_decoder_deps="cuda cuvid"
2778 mpeg2_cuvid_decoder_deps="cuda cuvid"
2779 mpeg2_qsv_decoder_deps="libmfx"
2780 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2781 mpeg2_qsv_encoder_deps="libmfx"
2782 mpeg2_qsv_encoder_select="qsvenc"
2783 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2784 mpeg2_vaapi_encoder_select="vaapi_encode"
2785 mpeg4_cuvid_decoder_deps="cuda cuvid"
2786 nvenc_h264_encoder_deps="nvenc"
2787 nvenc_hevc_encoder_deps="nvenc"
2788
2789 vc1_cuvid_decoder_deps="cuda cuvid"
2790 vp8_cuvid_decoder_deps="cuda cuvid"
2791 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2792 vp8_vaapi_encoder_select="vaapi_encode"
2793 vp9_cuvid_decoder_deps="cuda cuvid"
2794
2795 # parsers
2796 h264_parser_select="golomb h264dsp h264parse"
2797 hevc_parser_select="golomb"
2798 mpegvideo_parser_select="mpegvideo"
2799 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2800 vc1_parser_select="vc1dsp"
2801
2802 # bitstream_filters
2803 mjpeg2jpeg_bsf_select="jpegtables"
2804
2805 # external libraries
2806 aac_at_decoder_deps="audiotoolbox"
2807 ac3_at_decoder_deps="audiotoolbox"
2808 ac3_at_decoder_select="ac3_parser"
2809 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2810 alac_at_decoder_deps="audiotoolbox"
2811 amr_nb_at_decoder_deps="audiotoolbox"
2812 avisynth_deps_any="dlopen LoadLibrary"
2813 avisynth_demuxer_deps="avisynth"
2814 avisynth_demuxer_select="riffdec"
2815 eac3_at_decoder_deps="audiotoolbox"
2816 eac3_at_decoder_select="ac3_parser"
2817 gsm_ms_at_decoder_deps="audiotoolbox"
2818 ilbc_at_decoder_deps="audiotoolbox"
2819 mp1_at_decoder_deps="audiotoolbox"
2820 mp2_at_decoder_deps="audiotoolbox"
2821 mp3_at_decoder_deps="audiotoolbox"
2822 pcm_alaw_at_decoder_deps="audiotoolbox"
2823 pcm_mulaw_at_decoder_deps="audiotoolbox"
2824 qdmc_at_decoder_deps="audiotoolbox"
2825 qdm2_at_decoder_deps="audiotoolbox"
2826 aac_at_encoder_deps="audiotoolbox"
2827 aac_at_encoder_select="audio_frame_queue"
2828 alac_at_encoder_deps="audiotoolbox"
2829 alac_at_encoder_select="audio_frame_queue"
2830 ilbc_at_encoder_deps="audiotoolbox"
2831 ilbc_at_encoder_select="audio_frame_queue"
2832 pcm_alaw_at_encoder_deps="audiotoolbox"
2833 pcm_alaw_at_encoder_select="audio_frame_queue"
2834 pcm_mulaw_at_encoder_deps="audiotoolbox"
2835 pcm_mulaw_at_encoder_select="audio_frame_queue"
2836 chromaprint_muxer_deps="chromaprint"
2837 h264_videotoolbox_encoder_deps="videotoolbox_encoder pthreads"
2838 libcelt_decoder_deps="libcelt"
2839 libfdk_aac_decoder_deps="libfdk_aac"
2840 libfdk_aac_encoder_deps="libfdk_aac"
2841 libfdk_aac_encoder_select="audio_frame_queue"
2842 libgme_demuxer_deps="libgme"
2843 libgsm_decoder_deps="libgsm"
2844 libgsm_encoder_deps="libgsm"
2845 libgsm_ms_decoder_deps="libgsm"
2846 libgsm_ms_encoder_deps="libgsm"
2847 libilbc_decoder_deps="libilbc"
2848 libilbc_encoder_deps="libilbc"
2849 libkvazaar_encoder_deps="libkvazaar"
2850 libmodplug_demuxer_deps="libmodplug"
2851 libmp3lame_encoder_deps="libmp3lame"
2852 libmp3lame_encoder_select="audio_frame_queue"
2853 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2854 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2855 libopencore_amrnb_encoder_select="audio_frame_queue"
2856 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2857 libopenh264_decoder_deps="libopenh264"
2858 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2859 libopenh264_encoder_deps="libopenh264"
2860 libopenjpeg_decoder_deps="libopenjpeg"
2861 libopenjpeg_encoder_deps="libopenjpeg"
2862 libopenmpt_demuxer_deps="libopenmpt"
2863 libopus_decoder_deps="libopus"
2864 libopus_encoder_deps="libopus"
2865 libopus_encoder_select="audio_frame_queue"
2866 libschroedinger_decoder_deps="libschroedinger"
2867 libschroedinger_encoder_deps="libschroedinger"
2868 libshine_encoder_deps="libshine"
2869 libshine_encoder_select="audio_frame_queue"
2870 libspeex_decoder_deps="libspeex"
2871 libspeex_encoder_deps="libspeex"
2872 libspeex_encoder_select="audio_frame_queue"
2873 libtheora_encoder_deps="libtheora"
2874 libtwolame_encoder_deps="libtwolame"
2875 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2876 libvorbis_decoder_deps="libvorbis"
2877 libvorbis_encoder_deps="libvorbis"
2878 libvorbis_encoder_select="audio_frame_queue"
2879 libvpx_vp8_decoder_deps="libvpx"
2880 libvpx_vp8_encoder_deps="libvpx"
2881 libvpx_vp9_decoder_deps="libvpx"
2882 libvpx_vp9_encoder_deps="libvpx"
2883 libwavpack_encoder_deps="libwavpack"
2884 libwebp_encoder_deps="libwebp"
2885 libwebp_anim_encoder_deps="libwebp"
2886 libx262_encoder_deps="libx262"
2887 libx264_encoder_deps="libx264"
2888 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2889 libx264rgb_encoder_select="libx264_encoder"
2890 libx265_encoder_deps="libx265"
2891 libxavs_encoder_deps="libxavs"
2892 libxvid_encoder_deps="libxvid"
2893 libzvbi_teletext_decoder_deps="libzvbi"
2894 videotoolbox_deps="VideoToolbox_VideoToolbox_h"
2895 videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework CoreVideo"
2896 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2897 videotoolbox_encoder_suggest="vda_framework vt_bt2020"
2898 vt_bt2020_deps="kCVImageBufferColorPrimaries_ITU_R_2020"
2899
2900 # demuxers / muxers
2901 ac3_demuxer_select="ac3_parser"
2902 aiff_muxer_select="iso_media"
2903 asf_demuxer_select="riffdec"
2904 asf_o_demuxer_select="riffdec"
2905 asf_muxer_select="riffenc"
2906 asf_stream_muxer_select="asf_muxer"
2907 avi_demuxer_select="iso_media riffdec exif"
2908 avi_muxer_select="riffenc"
2909 caf_demuxer_select="iso_media riffdec"
2910 caf_muxer_select="iso_media"
2911 dash_muxer_select="mp4_muxer"
2912 dirac_demuxer_select="dirac_parser"
2913 dts_demuxer_select="dca_parser"
2914 dtshd_demuxer_select="dca_parser"
2915 dv_demuxer_select="dvprofile"
2916 dv_muxer_select="dvprofile"
2917 dxa_demuxer_select="riffdec"
2918 eac3_demuxer_select="ac3_parser"
2919 f4v_muxer_select="mov_muxer"
2920 fifo_muxer_deps="threads"
2921 flac_demuxer_select="flac_parser"
2922 hds_muxer_select="flv_muxer"
2923 hls_muxer_select="mpegts_muxer"
2924 image2_alias_pix_demuxer_select="image2_demuxer"
2925 image2_brender_pix_demuxer_select="image2_demuxer"
2926 ipod_muxer_select="mov_muxer"
2927 ismv_muxer_select="mov_muxer"
2928 libnut_demuxer_deps="libnut"
2929 libnut_muxer_deps="libnut"
2930 matroska_audio_muxer_select="matroska_muxer"
2931 matroska_demuxer_select="iso_media riffdec"
2932 matroska_demuxer_suggest="bzlib lzo zlib"
2933 matroska_muxer_select="iso_media riffenc"
2934 mmf_muxer_select="riffenc"
2935 mov_demuxer_select="iso_media riffdec"
2936 mov_demuxer_suggest="zlib"
2937 mov_muxer_select="iso_media riffenc rtpenc_chain"
2938 mp3_demuxer_select="mpegaudio_parser"
2939 mp4_muxer_select="mov_muxer"
2940 mpegts_demuxer_select="iso_media"
2941 mpegts_muxer_select="adts_muxer latm_muxer"
2942 mpegtsraw_demuxer_select="mpegts_demuxer"
2943 mxf_d10_muxer_select="mxf_muxer"
2944 mxf_opatom_muxer_select="mxf_muxer"
2945 nut_muxer_select="riffenc"
2946 nuv_demuxer_select="riffdec"
2947 oga_muxer_select="ogg_muxer"
2948 ogg_demuxer_select="dirac_parse"
2949 ogv_muxer_select="ogg_muxer"
2950 opus_muxer_select="ogg_muxer"
2951 psp_muxer_select="mov_muxer"
2952 rtp_demuxer_select="sdp_demuxer"
2953 rtp_muxer_select="golomb"
2954 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2955 rtsp_demuxer_select="http_protocol rtpdec"
2956 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2957 sap_demuxer_select="sdp_demuxer"
2958 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2959 sdp_demuxer_select="rtpdec"
2960 smoothstreaming_muxer_select="ismv_muxer"
2961 spdif_muxer_select="aac_parser"
2962 spx_muxer_select="ogg_muxer"
2963 swf_demuxer_suggest="zlib"
2964 tak_demuxer_select="tak_parser"
2965 tg2_muxer_select="mov_muxer"
2966 tgp_muxer_select="mov_muxer"
2967 vobsub_demuxer_select="mpegps_demuxer"
2968 w64_demuxer_select="wav_demuxer"
2969 w64_muxer_select="wav_muxer"
2970 wav_demuxer_select="riffdec"
2971 wav_muxer_select="riffenc"
2972 webm_muxer_select="iso_media riffenc"
2973 webm_dash_manifest_demuxer_select="matroska_demuxer"
2974 wtv_demuxer_select="mpegts_demuxer riffdec"
2975 wtv_muxer_select="mpegts_muxer riffenc"
2976 xmv_demuxer_select="riffdec"
2977 xwma_demuxer_select="riffdec"
2978
2979 # indevs / outdevs
2980 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2981 alsa_outdev_deps="alsa_asoundlib_h"
2982 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2983 avfoundation_indev_select="avfoundation"
2984 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2985 caca_outdev_deps="libcaca"
2986 decklink_indev_deps="decklink pthreads"
2987 decklink_indev_extralibs="-lstdc++"
2988 decklink_outdev_deps="decklink pthreads"
2989 decklink_outdev_extralibs="-lstdc++"
2990 dshow_indev_deps="IBaseFilter"
2991 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
2992 dv1394_indev_deps="dv1394"
2993 dv1394_indev_select="dv_demuxer"
2994 fbdev_indev_deps="linux_fb_h"
2995 fbdev_outdev_deps="linux_fb_h"
2996 gdigrab_indev_deps="CreateDIBSection"
2997 gdigrab_indev_extralibs="-lgdi32"
2998 gdigrab_indev_select="bmp_decoder"
2999 iec61883_indev_deps="libiec61883"
3000 jack_indev_deps="jack_jack_h"
3001 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3002 lavfi_indev_deps="avfilter"
3003 libcdio_indev_deps="libcdio"
3004 libdc1394_indev_deps="libdc1394"
3005 libv4l2_indev_deps="libv4l2"
3006 openal_indev_deps="openal"
3007 opengl_outdev_deps="opengl"
3008 oss_indev_deps_any="soundcard_h sys_soundcard_h"
3009 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
3010 pulse_indev_deps="libpulse"
3011 pulse_outdev_deps="libpulse"
3012 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
3013 qtkit_indev_select="qtkit"
3014 sdl2_outdev_deps="sdl2"
3015 sndio_indev_deps="sndio_h"
3016 sndio_outdev_deps="sndio_h"
3017 v4l_indev_deps="linux_videodev_h"
3018 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3019 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3020 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
3021 vfwcap_indev_extralibs="-lavicap32"
3022 xcbgrab_indev_deps="libxcb"
3023 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3024 xv_outdev_extralibs="-lXv -lX11 -lXext"
3025
3026 # protocols
3027 async_protocol_deps="threads"
3028 bluray_protocol_deps="libbluray"
3029 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
3030 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3031 ffrtmpcrypt_protocol_select="tcp_protocol"
3032 ffrtmphttp_protocol_deps="!librtmp_protocol"
3033 ffrtmphttp_protocol_select="http_protocol"
3034 ftp_protocol_select="tcp_protocol"
3035 gopher_protocol_select="network"
3036 http_protocol_select="tcp_protocol"
3037 httpproxy_protocol_select="tcp_protocol"
3038 https_protocol_select="tls_protocol"
3039 icecast_protocol_select="http_protocol"
3040 librtmp_protocol_deps="librtmp"
3041 librtmpe_protocol_deps="librtmp"
3042 librtmps_protocol_deps="librtmp"
3043 librtmpt_protocol_deps="librtmp"
3044 librtmpte_protocol_deps="librtmp"
3045 libsmbclient_protocol_deps="libsmbclient gplv3"
3046 libssh_protocol_deps="libssh"
3047 mmsh_protocol_select="http_protocol"
3048 mmst_protocol_select="network"
3049 rtmp_protocol_deps="!librtmp_protocol"
3050 rtmp_protocol_select="tcp_protocol"
3051 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3052 rtmps_protocol_deps="!librtmp_protocol"
3053 rtmps_protocol_select="tls_protocol"
3054 rtmpt_protocol_select="ffrtmphttp_protocol"
3055 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3056 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3057 rtp_protocol_select="udp_protocol"
3058 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3059 sctp_protocol_select="network"
3060 srtp_protocol_select="rtp_protocol srtp"
3061 tcp_protocol_select="network"
3062 tls_gnutls_protocol_deps="gnutls !tls_schannel_protocol !tls_securetransport_protocol"
3063 tls_gnutls_protocol_select="tcp_protocol"
3064 tls_openssl_protocol_deps="openssl !tls_schannel_protocol !tls_securetransport_protocol !tls_gnutls_protocol"
3065 tls_openssl_protocol_select="tcp_protocol"
3066 tls_schannel_protocol_deps="schannel"
3067 tls_schannel_protocol_select="tcp_protocol"
3068 tls_securetransport_protocol_deps="securetransport"
3069 tls_securetransport_protocol_select="tcp_protocol"
3070 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
3071 udp_protocol_select="network"
3072 udplite_protocol_select="network"
3073 unix_protocol_deps="sys_un_h"
3074 unix_protocol_select="network"
3075
3076 # filters
3077 afftfilt_filter_deps="avcodec"
3078 afftfilt_filter_select="fft"
3079 amovie_filter_deps="avcodec avformat"
3080 aresample_filter_deps="swresample"
3081 ass_filter_deps="libass"
3082 atempo_filter_deps="avcodec"
3083 atempo_filter_select="rdft"
3084 azmq_filter_deps="libzmq"
3085 blackframe_filter_deps="gpl"
3086 boxblur_filter_deps="gpl"
3087 bs2b_filter_deps="libbs2b"
3088 colormatrix_filter_deps="gpl"
3089 cover_rect_filter_deps="avcodec avformat gpl"
3090 cropdetect_filter_deps="gpl"
3091 deinterlace_qsv_filter_deps="libmfx"
3092 deinterlace_vaapi_filter_deps="vaapi"
3093 delogo_filter_deps="gpl"
3094 deshake_filter_select="pixelutils"
3095 drawtext_filter_deps="libfreetype"
3096 eq_filter_deps="gpl"
3097 fftfilt_filter_deps="avcodec"
3098 fftfilt_filter_select="rdft"
3099 find_rect_filter_deps="avcodec avformat gpl"
3100 firequalizer_filter_deps="avcodec"
3101 firequalizer_filter_select="rdft"
3102 flite_filter_deps="libflite"
3103 framerate_filter_select="pixelutils"
3104 frei0r_filter_deps="frei0r dlopen"
3105 frei0r_src_filter_deps="frei0r dlopen"
3106 fspp_filter_deps="gpl"
3107 geq_filter_deps="gpl"
3108 histeq_filter_deps="gpl"
3109 hqdn3d_filter_deps="gpl"
3110 interlace_filter_deps="gpl"
3111 kerndeint_filter_deps="gpl"
3112 ladspa_filter_deps="ladspa dlopen"
3113 mcdeint_filter_deps="avcodec gpl"
3114 movie_filter_deps="avcodec avformat"
3115 mpdecimate_filter_deps="gpl"
3116 mpdecimate_filter_select="pixelutils"
3117 mptestsrc_filter_deps="gpl"
3118 negate_filter_deps="lut_filter"
3119 nnedi_filter_deps="gpl"
3120 ocr_filter_deps="libtesseract"
3121 ocv_filter_deps="libopencv"
3122 owdenoise_filter_deps="gpl"
3123 pan_filter_deps="swresample"
3124 perspective_filter_deps="gpl"
3125 phase_filter_deps="gpl"
3126 pp7_filter_deps="gpl"
3127 pp_filter_deps="gpl postproc"
3128 pullup_filter_deps="gpl"
3129 removelogo_filter_deps="avcodec avformat swscale"
3130 repeatfields_filter_deps="gpl"
3131 resample_filter_deps="avresample"
3132 rubberband_filter_deps="librubberband"
3133 sab_filter_deps="gpl swscale"
3134 scale2ref_filter_deps="swscale"
3135 scale_filter_deps="swscale"
3136 scale_qsv_filter_deps="libmfx"
3137 select_filter_select="pixelutils"
3138 showcqt_filter_deps="avcodec avformat swscale"
3139 showcqt_filter_select="fft"
3140 showfreqs_filter_deps="avcodec"
3141 showfreqs_filter_select="fft"
3142 showspectrum_filter_deps="avcodec"
3143 showspectrum_filter_select="fft"
3144 showspectrumpic_filter_deps="avcodec"
3145 showspectrumpic_filter_select="fft"
3146 signature_filter_deps="gpl avcodec avformat"
3147 smartblur_filter_deps="gpl swscale"
3148 sofalizer_filter_deps="netcdf avcodec"
3149 sofalizer_filter_select="fft"
3150 spectrumsynth_filter_deps="avcodec"
3151 spectrumsynth_filter_select="fft"
3152 spp_filter_deps="gpl avcodec"
3153 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3154 stereo3d_filter_deps="gpl"
3155 subtitles_filter_deps="avformat avcodec libass"
3156 super2xsai_filter_deps="gpl"
3157 pixfmts_super2xsai_test_deps="super2xsai_filter"
3158 tinterlace_filter_deps="gpl"
3159 tinterlace_merge_test_deps="tinterlace_filter"
3160 tinterlace_pad_test_deps="tinterlace_filter"
3161 uspp_filter_deps="gpl avcodec"
3162 vaguedenoiser_filter_deps="gpl"
3163 vidstabdetect_filter_deps="libvidstab"
3164 vidstabtransform_filter_deps="libvidstab"
3165 zmq_filter_deps="libzmq"
3166 zoompan_filter_deps="swscale"
3167 zscale_filter_deps="libzimg"
3168 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3169
3170 # examples
3171 avio_dir_cmd_deps="avformat avutil"
3172 avio_reading_deps="avformat avcodec avutil"
3173 decode_audio_example_deps="avcodec avutil"
3174 decode_video_example_deps="avcodec avutil"
3175 demuxing_decoding_example_deps="avcodec avformat avutil"
3176 encode_audio_example_deps="avcodec avutil"
3177 encode_video_example_deps="avcodec avutil"
3178 extract_mvs_example_deps="avcodec avformat avutil"
3179 filter_audio_example_deps="avfilter avutil"
3180 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3181 filtering_video_example_deps="avfilter avcodec avformat avutil"
3182 http_multiclient_example_deps="avformat avutil fork"
3183 metadata_example_deps="avformat avutil"
3184 muxing_example_deps="avcodec avformat avutil swscale"
3185 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
3186 remuxing_example_deps="avcodec avformat avutil"
3187 resampling_audio_example_deps="avutil swresample"
3188 scaling_video_example_deps="avutil swscale"
3189 transcode_aac_example_deps="avcodec avformat swresample"
3190 transcoding_example_deps="avfilter avcodec avformat avutil"
3191
3192 # libraries, in linking order
3193 avcodec_deps="avutil"
3194 avdevice_deps="avformat avcodec avutil"
3195 avfilter_deps="avutil"
3196 avformat_deps="avcodec avutil"
3197 avresample_deps="avutil"
3198 postproc_deps="avutil gpl"
3199 swresample_deps="avutil"
3200 swscale_deps="avutil"
3201
3202 # programs
3203 ffmpeg_deps="avcodec avfilter avformat swresample"
3204 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3205                null_filter
3206                trim_filter"
3207 ffplay_deps="avcodec avformat swscale swresample sdl2"
3208 ffplay_libs='$sdl2_libs'
3209 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3210 ffprobe_deps="avcodec avformat"
3211 ffserver_deps="avformat fork sarestart"
3212 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3213
3214 # documentation
3215 podpages_deps="perl"
3216 manpages_deps="perl pod2man"
3217 htmlpages_deps="perl"
3218 htmlpages_deps_any="makeinfo_html texi2html"
3219 txtpages_deps="perl makeinfo"
3220 doc_deps_any="manpages htmlpages podpages txtpages"
3221
3222 # default parameters
3223
3224 logfile="config.log"
3225
3226 # installation paths
3227 prefix_default="/usr/local"
3228 bindir_default='${prefix}/bin'
3229 datadir_default='${prefix}/share/ffmpeg'
3230 docdir_default='${prefix}/share/doc/ffmpeg'
3231 incdir_default='${prefix}/include'
3232 libdir_default='${prefix}/lib'
3233 mandir_default='${prefix}/share/man'
3234
3235 # toolchain
3236 ar_default="ar"
3237 cc_default="gcc"
3238 cxx_default="g++"
3239 host_cc_default="gcc"
3240 cp_f="cp -f"
3241 doxygen_default="doxygen"
3242 install="install"
3243 ln_s_default="ln -s -f"
3244 nm_default="nm -g"
3245 objformat="elf"
3246 pkg_config_default=pkg-config
3247 ranlib_default="ranlib"
3248 strip_default="strip"
3249 version_script='--version-script'
3250 yasmexe_default="yasm"
3251 windres_default="windres"
3252
3253 # OS
3254 target_os_default=$(tolower $(uname -s))
3255 host_os=$target_os_default
3256
3257 # machine
3258 if test "$target_os_default" = aix; then
3259     arch_default=$(uname -p)
3260     strip_default="strip -X32_64"
3261 else
3262     arch_default=$(uname -m)
3263 fi
3264 cpu="generic"
3265 intrinsics="none"
3266
3267 # configurable options
3268 enable $PROGRAM_LIST
3269 enable $DOCUMENT_LIST
3270 enable $EXAMPLE_LIST
3271 enable $(filter_out avresample $LIBRARY_LIST)
3272 enable stripping
3273
3274 enable asm
3275 enable debug
3276 enable doc
3277 enable faan faandct faanidct
3278 enable optimizations
3279 enable runtime_cpudetect
3280 enable safe_bitstream_reader
3281 enable static
3282 enable swscale_alpha
3283 enable valgrind_backtrace
3284
3285 sws_max_filter_size_default=256
3286 set_default sws_max_filter_size
3287
3288 # build settings
3289 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3290 LIBPREF="lib"
3291 LIBSUF=".a"
3292 FULLNAME='$(NAME)$(BUILDSUF)'
3293 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3294 SLIBPREF="lib"
3295 SLIBSUF=".so"
3296 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3297 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3298 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3299 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3300 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3301 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3302 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3303
3304 asflags_filter=echo
3305 cflags_filter=echo
3306 ldflags_filter=echo
3307
3308 AS_C='-c'
3309 AS_O='-o $@'
3310 CC_C='-c'
3311 CC_E='-E -o $@'
3312 CC_O='-o $@'
3313 CXX_C='-c'
3314 CXX_O='-o $@'
3315 OBJCC_C='-c'
3316 OBJCC_E='-E -o $@'
3317 OBJCC_O='-o $@'
3318 LD_O='-o $@'
3319 LD_LIB='-l%'
3320 LD_PATH='-L'
3321 HOSTCC_C='-c'
3322 HOSTCC_E='-E -o $@'
3323 HOSTCC_O='-o $@'
3324 HOSTLD_O='-o $@'
3325
3326 host_libs='-lm'
3327 host_cflags_filter=echo
3328 host_ldflags_filter=echo
3329
3330 target_path='$(CURDIR)'
3331
3332 # since the object filename is not given with the -MM flag, the compiler
3333 # is only able to print the basename, and we must add the path ourselves
3334 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3335 DEPFLAGS='-MM'
3336
3337 # find source path
3338 if test -f configure; then
3339     source_path=.
3340 else
3341     source_path=$(cd $(dirname "$0"); pwd)
3342     case "$source_path" in
3343         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3344     esac
3345     test -e "$source_path/config.h" &&
3346         die "Out of tree builds are impossible with config.h in source dir."
3347 fi
3348
3349 for v in "$@"; do
3350     r=${v#*=}
3351     l=${v%"$r"}
3352     r=$(sh_quote "$r")
3353     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3354 done
3355
3356 find_things(){
3357     thing=$1
3358     pattern=$2
3359     file=$source_path/$3
3360     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3361 }
3362
3363 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3364 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3365 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3366 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3367 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3368 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3369 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3370 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3371 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3372
3373 find_things_extern(){
3374     thing=$1
3375     pattern=$2
3376     file=$source_path/$3
3377     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3378 }
3379
3380 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3381 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3382
3383 ALL_COMPONENTS="
3384     $BSF_LIST
3385     $DECODER_LIST
3386     $DEMUXER_LIST
3387     $ENCODER_LIST
3388     $FILTER_LIST
3389     $HWACCEL_LIST
3390     $INDEV_LIST
3391     $MUXER_LIST
3392     $OUTDEV_LIST
3393     $PARSER_LIST
3394     $PROTOCOL_LIST
3395 "
3396
3397 for n in $COMPONENT_LIST; do
3398     v=$(toupper ${n%s})_LIST
3399     eval enable \$$v
3400     eval ${n}_if_any="\$$v"
3401 done
3402
3403 enable $ARCH_EXT_LIST
3404
3405 die_unknown(){
3406     echo "Unknown option \"$1\"."
3407     echo "See $0 --help for available options."
3408     exit 1
3409 }
3410
3411 print_in_columns() {
3412     cols=$(expr $ncols / 24)
3413     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3414 }
3415
3416 show_list() {
3417     suffix=_$1
3418     shift
3419     echo $* | sed s/$suffix//g | print_in_columns
3420     exit 0
3421 }
3422
3423 rand_list(){
3424     IFS=', '
3425     set -- $*
3426     unset IFS
3427     for thing; do
3428         comp=${thing%:*}
3429         prob=${thing#$comp}
3430         prob=${prob#:}
3431         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3432         echo "prob ${prob:-0.5}"
3433         printf '%s\n' $comp
3434     done
3435 }
3436
3437 do_random(){
3438     action=$1
3439     shift
3440     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3441     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3442 }
3443
3444 for opt do
3445     optval="${opt#*=}"
3446     case "$opt" in
3447         --extra-ldflags=*)
3448             add_ldflags $optval
3449         ;;
3450         --extra-ldexeflags=*)
3451             add_ldexeflags $optval
3452         ;;
3453         --extra-ldlibflags=*)
3454             add_ldlibflags $optval
3455         ;;
3456         --extra-libs=*)
3457             add_extralibs $optval
3458         ;;
3459         --disable-devices)
3460             disable $INDEV_LIST $OUTDEV_LIST
3461         ;;
3462         --enable-debug=*)
3463             debuglevel="$optval"
3464         ;;
3465         --disable-programs)
3466             disable $PROGRAM_LIST
3467         ;;
3468         --disable-everything)
3469             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3470         ;;
3471         --disable-all)
3472             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3473             disable $LIBRARY_LIST $PROGRAM_LIST doc
3474             enable avutil
3475         ;;
3476         --enable-random|--disable-random)
3477             action=${opt%%-random}
3478             do_random ${action#--} $COMPONENT_LIST
3479         ;;
3480         --enable-random=*|--disable-random=*)
3481             action=${opt%%-random=*}
3482             do_random ${action#--} $optval
3483         ;;
3484         --enable-*=*|--disable-*=*)
3485             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3486             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3487             eval list=\$$(toupper $thing)_LIST
3488             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3489             list=$(filter "$name" $list)
3490             [ "$list" = "" ] && warn "Option $opt did not match anything"
3491             $action $list
3492         ;;
3493         --enable-?*|--disable-?*)
3494             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3495             if is_in $option $COMPONENT_LIST; then
3496                 test $action = disable && action=unset
3497                 eval $action \$$(toupper ${option%s})_LIST
3498             elif is_in $option $CMDLINE_SELECT; then
3499                 $action $option
3500             else
3501                 die_unknown $opt
3502             fi
3503         ;;
3504         --list-*)
3505             NAME="${opt#--list-}"
3506             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3507             NAME=${NAME%s}
3508             eval show_list $NAME \$$(toupper $NAME)_LIST
3509         ;;
3510         --help|-h) show_help
3511         ;;
3512         --fatal-warnings) enable fatal_warnings
3513         ;;
3514         *)
3515             optname="${opt%%=*}"
3516             optname="${optname#--}"
3517             optname=$(echo "$optname" | sed 's/-/_/g')
3518             if is_in $optname $CMDLINE_SET; then
3519                 eval $optname='$optval'
3520             elif is_in $optname $CMDLINE_APPEND; then
3521                 append $optname "$optval"
3522             else
3523                 die_unknown $opt
3524             fi
3525         ;;
3526     esac
3527 done
3528
3529 for e in $env; do
3530     eval "export $e"
3531 done
3532
3533 # Mark specifically enabled, but normally autodetected libraries as requested.
3534 for lib in $AUTODETECT_LIBS; do
3535     enabled $lib && request $lib
3536 done
3537
3538 # Enable platform codecs by default.
3539 enable_weak audiotoolbox
3540
3541 # Enable hwaccels by default.
3542 enable_weak d3d11va dxva2 vaapi vda vdpau videotoolbox_hwaccel xvmc
3543 enable_weak xlib
3544
3545 enable_weak cuda cuvid nvenc vda_framework videotoolbox videotoolbox_encoder
3546
3547 disabled logging && logfile=/dev/null
3548
3549 # Disable all the library-specific components if the library itself
3550 # is disabled, see AVCODEC_LIST and following _LIST variables.
3551
3552 disable_components(){
3553     disabled ${1} && disable $(
3554         eval components="\$$(toupper ${1})_COMPONENTS"
3555         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3556     )
3557 }
3558
3559 map 'disable_components $v' $LIBRARY_LIST
3560
3561 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3562 set >> $logfile
3563
3564 test -n "$valgrind" && toolchain="valgrind-memcheck"
3565
3566 case "$toolchain" in
3567     *-asan)
3568         cc_default="${toolchain%-asan}"
3569         add_cflags  -fsanitize=address
3570         add_ldflags -fsanitize=address
3571     ;;
3572     *-msan)
3573         cc_default="${toolchain%-msan}"
3574         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3575         add_ldflags -fsanitize=memory
3576     ;;
3577     *-tsan)
3578         cc_default="${toolchain%-tsan}"
3579         add_cflags  -fsanitize=thread -fPIE
3580         add_ldflags -fsanitize=thread -pie
3581         case "$toolchain" in
3582             gcc-tsan)
3583                 add_cflags  -fPIC
3584                 add_ldflags -fPIC
3585                 ;;
3586         esac
3587     ;;
3588     *-usan)
3589         cc_default="${toolchain%-usan}"
3590         add_cflags  -fsanitize=undefined
3591         add_ldflags -fsanitize=undefined
3592     ;;
3593     valgrind-*)
3594         target_exec_default="valgrind"
3595         case "$toolchain" in
3596             valgrind-massif)
3597                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3598                 ;;
3599             valgrind-memcheck)
3600                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3601                 ;;
3602         esac
3603     ;;
3604     msvc)
3605         # Check whether the current MSVC version needs the C99 converter.
3606         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3607         # support enough of C99 to build ffmpeg. Default to the new
3608         # behaviour if the regexp was unable to match anything, since this
3609         # successfully parses the version number of existing supported
3610         # versions that require the converter (MSVC 2010 and 2012).
3611         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3612         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3613             cc_default="cl"
3614         else
3615             cc_default="c99wrap cl"
3616         fi
3617         ld_default="$source_path/compat/windows/mslink"
3618         nm_default="dumpbin -symbols"
3619         ar_default="lib"
3620         case "$arch" in
3621         arm*)
3622             as_default="armasm"
3623             ;;
3624         esac
3625         target_os_default="win32"
3626         # Use a relative path for TMPDIR. This makes sure all the
3627         # ffconf temp files are written with a relative path, avoiding
3628         # issues with msys/win32 path conversion for MSVC parameters
3629         # such as -Fo<file> or -out:<file>.
3630         TMPDIR=.
3631     ;;
3632     icl)
3633         cc_default="icl"
3634         ld_default="xilink"
3635         nm_default="dumpbin -symbols"
3636         ar_default="xilib"
3637         target_os_default="win32"
3638         TMPDIR=.
3639     ;;
3640     gcov)
3641         add_cflags  -fprofile-arcs -ftest-coverage
3642         add_ldflags -fprofile-arcs -ftest-coverage
3643     ;;
3644     llvm-cov)
3645         add_cflags -fprofile-arcs -ftest-coverage
3646         add_ldflags --coverage
3647     ;;
3648     hardened)
3649         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3650         add_cflags   -fno-strict-overflow -fstack-protector-all
3651         add_ldflags  -Wl,-z,relro -Wl,-z,now
3652         add_cflags   -fPIE
3653         add_ldexeflags -fPIE -pie
3654     ;;
3655     ?*)
3656         die "Unknown toolchain $toolchain"
3657     ;;
3658 esac
3659
3660 test -n "$cross_prefix" && enable cross_compile
3661
3662 if enabled cross_compile; then
3663     test -n "$arch" && test -n "$target_os" ||
3664         die "Must specify target arch and OS when cross-compiling"
3665 fi
3666
3667 ar_default="${cross_prefix}${ar_default}"
3668 cc_default="${cross_prefix}${cc_default}"
3669 cxx_default="${cross_prefix}${cxx_default}"
3670 nm_default="${cross_prefix}${nm_default}"
3671 pkg_config_default="${cross_prefix}${pkg_config_default}"
3672 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3673     ranlib_default="${cross_prefix}${ranlib_default} -D"
3674 else
3675     ranlib_default="${cross_prefix}${ranlib_default}"
3676 fi
3677 strip_default="${cross_prefix}${strip_default}"
3678 windres_default="${cross_prefix}${windres_default}"
3679
3680 sysinclude_default="${sysroot}/usr/include"
3681
3682 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3683     target_exec target_os yasmexe
3684 enabled cross_compile || host_cc_default=$cc
3685 set_default host_cc
3686
3687 pkg_config_fail_message=""
3688 if ! $pkg_config --version >/dev/null 2>&1; then
3689     warn "$pkg_config not found, library detection may fail."
3690     pkg_config=false
3691 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3692     pkg_config_fail_message="
3693 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3694 fi
3695
3696 if test $doxygen != $doxygen_default && \
3697   ! $doxygen --version >/dev/null 2>&1; then
3698     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3699 fi
3700
3701 exesuf() {
3702     case $1 in
3703         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3704     esac
3705 }
3706
3707 EXESUF=$(exesuf $target_os)
3708 HOSTEXESUF=$(exesuf $host_os)
3709
3710 # set temporary file name
3711 : ${TMPDIR:=$TEMPDIR}
3712 : ${TMPDIR:=$TMP}
3713 : ${TMPDIR:=/tmp}
3714
3715 if [ -n "$tempprefix" ] ; then
3716     mktemp(){
3717         echo $tempprefix.${HOSTNAME}.${UID}
3718     }
3719 elif ! check_cmd mktemp -u XXXXXX; then
3720     # simple replacement for missing mktemp
3721     # NOT SAFE FOR GENERAL USE
3722     mktemp(){
3723         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3724     }
3725 fi
3726
3727 tmpfile(){
3728     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3729         (set -C; exec > $tmp) 2>/dev/null ||
3730         die "Unable to create temporary file in $TMPDIR."
3731     append TMPFILES $tmp
3732     eval $1=$tmp
3733 }
3734
3735 trap 'rm -f -- $TMPFILES' EXIT
3736
3737 tmpfile TMPASM .asm
3738 tmpfile TMPC   .c
3739 tmpfile TMPCPP .cpp
3740 tmpfile TMPE   $EXESUF
3741 tmpfile TMPH   .h
3742 tmpfile TMPM   .m
3743 tmpfile TMPO   .o
3744 tmpfile TMPS   .S
3745 tmpfile TMPSH  .sh
3746 tmpfile TMPV   .ver
3747
3748 unset -f mktemp
3749
3750 chmod +x $TMPE
3751
3752 # make sure we can execute files in $TMPDIR
3753 cat > $TMPSH 2>> $logfile <<EOF
3754 #! /bin/sh
3755 EOF
3756 chmod +x $TMPSH >> $logfile 2>&1
3757 if ! $TMPSH >> $logfile 2>&1; then
3758     cat <<EOF
3759 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3760 variable to another directory and make sure that it is not mounted noexec.
3761 EOF
3762     die "Sanity test failed."
3763 fi
3764
3765 armasm_flags(){
3766     for flag; do
3767         case $flag in
3768             # Filter out MSVC cl.exe options from cflags that shouldn't
3769             # be passed to gas-preprocessor
3770             -M[TD]*)                                            ;;
3771             *)                  echo $flag                      ;;
3772         esac
3773    done
3774 }
3775
3776 ccc_flags(){
3777     for flag; do
3778         case $flag in
3779             -std=c99)           echo -c99                       ;;
3780             -mcpu=*)            echo -arch ${flag#*=}           ;;
3781             -mieee)             echo -ieee                      ;;
3782             -O*|-fast)          echo $flag                      ;;
3783             -fno-math-errno)    echo -assume nomath_errno       ;;
3784             -g)                 echo -g3                        ;;
3785             -Wall)              echo -msg_enable level2         ;;
3786             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3787             -Wl,*)              echo $flag                      ;;
3788             -f*|-W*)                                            ;;
3789             *)                  echo $flag                      ;;
3790         esac
3791    done
3792 }
3793
3794 cparser_flags(){
3795     for flag; do
3796         case $flag in
3797             -Wno-switch)             echo -Wno-switch-enum ;;
3798             -Wno-format-zero-length) ;;
3799             -Wdisabled-optimization) ;;
3800             -Wno-pointer-sign)       echo -Wno-other ;;
3801             *)                       echo $flag ;;
3802         esac
3803     done
3804 }
3805
3806 msvc_common_flags(){
3807     for flag; do
3808         case $flag in
3809             # In addition to specifying certain flags under the compiler
3810             # specific filters, they must be specified here as well or else the
3811             # generic catch all at the bottom will print the original flag.
3812             -Wall)                ;;
3813             -std=c99)             ;;
3814             # Common flags
3815             -fomit-frame-pointer) ;;
3816             -g)                   echo -Z7 ;;
3817             -fno-math-errno)      ;;
3818             -fno-common)          ;;
3819             -fno-signed-zeros)    ;;
3820             -fPIC)                ;;
3821             -mthumb)              ;;
3822             -march=*)             ;;
3823             -lz)                  echo zlib.lib ;;
3824             -lavifil32)           echo vfw32.lib ;;
3825             -lavicap32)           echo vfw32.lib user32.lib ;;
3826             -lx264)               echo libx264.lib ;;
3827             -l*)                  echo ${flag#-l}.lib ;;
3828             -LARGEADDRESSAWARE)   echo $flag ;;
3829             -L*)                  echo -libpath:${flag#-L} ;;
3830             *)                    echo $flag ;;
3831         esac
3832     done
3833 }
3834
3835 msvc_flags(){
3836     msvc_common_flags "$@"
3837     for flag; do
3838         case $flag in
3839             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3840                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3841                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3842                                        -wd4307 \
3843                                        -wd4273 -wd4554 -wd4701 ;;
3844         esac
3845     done
3846 }
3847
3848 icl_flags(){
3849     msvc_common_flags "$@"
3850     for flag; do
3851         case $flag in
3852             # Despite what Intel's documentation says -Wall, which is supported
3853             # on Windows, does enable remarks so disable them here.
3854             -Wall)                echo $flag -Qdiag-disable:remark ;;
3855             -std=c99)             echo -Qstd=c99 ;;
3856             -flto)                echo -ipo ;;
3857         esac
3858     done
3859 }
3860
3861 icc_flags(){
3862     for flag; do
3863         case $flag in
3864             -flto)                echo -ipo ;;
3865             *)                    echo $flag ;;
3866         esac
3867     done
3868 }
3869
3870 pgi_flags(){
3871     for flag; do
3872         case $flag in
3873             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3874             -fomit-frame-pointer) echo -Mnoframe ;;
3875             -g)                   echo -gopt ;;
3876             *)                    echo $flag ;;
3877         esac
3878     done
3879 }
3880
3881 suncc_flags(){
3882     for flag; do
3883         case $flag in
3884             -march=*|-mcpu=*)
3885                 case "${flag#*=}" in
3886                     native)                   echo -xtarget=native       ;;
3887                     v9|niagara)               echo -xarch=sparc          ;;
3888                     ultrasparc)               echo -xarch=sparcvis       ;;
3889                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3890                     i586|pentium)             echo -xchip=pentium        ;;
3891                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3892                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3893                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3894                     pentium4*)          echo -xtarget=pentium4           ;;
3895                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3896                     *-sse3)             echo -xarch=sse3                 ;;
3897                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3898                     bonnell)                   echo -xarch=ssse3         ;;
3899                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3900                     westmere)                  echo -xtarget=westmere    ;;
3901                     silvermont)                echo -xarch=sse4_2        ;;
3902                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3903                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
3904                                                echo -xarch=avx           ;;
3905                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3906                     btver1)                    echo -xarch=amdsse4a      ;;
3907                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
3908                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3909                     k8|opteron|athlon64|athlon-fx)
3910                                                echo -xarch=sse2a         ;;
3911                     athlon*)                   echo -xarch=pentium_proa  ;;
3912                 esac
3913                 ;;
3914             -std=c99)             echo -xc99              ;;
3915             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3916             -fPIC)                echo -KPIC -xcode=pic32 ;;
3917             -W*,*)                echo $flag              ;;
3918             -f*-*|-W*|-mimpure-text)                      ;;
3919             -shared)              echo -G                 ;;
3920             *)                    echo $flag              ;;
3921         esac
3922     done
3923 }
3924
3925 tms470_flags(){
3926     for flag; do
3927         case $flag in
3928             -march=*|-mcpu=*)
3929                 case "${flag#*=}" in
3930                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3931                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3932                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3933                     armv6*|arm11*)          echo -mv=6   ;;
3934                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3935                                             echo -mv=5e  ;;
3936                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3937                 esac
3938                 ;;
3939             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3940             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3941             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3942             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3943             -msoft-float)   echo --float_support=vfplib       ;;
3944             -O[0-3]|-mf=*)  echo $flag                        ;;
3945             -g)             echo -g -mn                       ;;
3946             -pds=*)         echo $flag                        ;;
3947             -D*|-I*)        echo $flag                        ;;
3948             --gcc|--abi=*)  echo $flag                        ;;
3949             -me)            echo $flag                        ;;
3950         esac
3951     done
3952 }
3953
3954 probe_cc(){
3955     pfx=$1
3956     _cc=$2
3957     first=$3
3958
3959     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3960     unset _ld_o _ldflags _ld_lib _ld_path
3961     unset _depflags _DEPCMD _DEPFLAGS
3962     _flags_filter=echo
3963
3964     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3965         true # no-op to avoid reading stdin in following checks
3966     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3967         _type=llvm_gcc
3968         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3969         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3970         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3971         _cflags_speed='-O3'
3972         _cflags_size='-Os'
3973     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3974         _type=gcc
3975         gcc_version=$($_cc --version | head -n1)
3976         gcc_basever=$($_cc -dumpversion)
3977         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3978         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3979         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3980         case $gcc_basever in
3981             2) ;;
3982             2.*) ;;
3983             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
3984         esac
3985         if [ "$first" = true ]; then
3986             case $gcc_basever in
3987                 4.2*)
3988                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
3989             esac
3990         fi
3991         _cflags_speed='-O3'
3992         _cflags_size='-Os'
3993     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3994         _type=icc
3995         _ident=$($_cc --version | head -n1)
3996         _depflags='-MMD'
3997         _cflags_speed='-O3'
3998         _cflags_size='-Os'
3999         _cflags_noopt='-O1'
4000         _flags_filter=icc_flags
4001     elif $_cc -v 2>&1 | grep -q xlc; then
4002         _type=xlc
4003         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4004         _cflags_speed='-O5'
4005         _cflags_size='-O5 -qcompact'
4006     elif $_cc -V 2>/dev/null | grep -q Compaq; then
4007         _type=ccc
4008         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
4009         _DEPFLAGS='-M'
4010         _cflags_speed='-fast'
4011         _cflags_size='-O1'
4012         _flags_filter=ccc_flags
4013     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4014         test -d "$sysroot" || die "No valid sysroot specified."
4015         _type=armcc
4016         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4017         armcc_conf="$PWD/armcc.conf"
4018         $_cc --arm_linux_configure                 \
4019              --arm_linux_config_file="$armcc_conf" \
4020              --configure_sysroot="$sysroot"        \
4021              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4022              die "Error creating armcc configuration file."
4023         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4024         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4025         as_default="${cross_prefix}gcc"
4026         _depflags='-MMD'
4027         _cflags_speed='-O3'
4028         _cflags_size='-Os'
4029     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
4030         _type=tms470
4031         _ident=$($_cc -version | head -n1 | tr -s ' ')
4032         _flags='--gcc --abi=eabi -me'
4033         _cc_e='-ppl -fe=$@'
4034         _cc_o='-fe=$@'
4035         _depflags='-ppa -ppd=$(@:.o=.d)'
4036         _cflags_speed='-O3 -mf=5'
4037         _cflags_size='-O3 -mf=2'
4038         _flags_filter=tms470_flags
4039     elif $_cc -v 2>&1 | grep -q clang; then
4040         _type=clang
4041         _ident=$($_cc --version 2>/dev/null | head -n1)
4042         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4043         _cflags_speed='-O3'
4044         _cflags_size='-Oz'
4045     elif $_cc -V 2>&1 | grep -q Sun; then
4046         _type=suncc
4047         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4048         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4049         _DEPFLAGS='-xM1 -xc99'
4050         _ldflags='-std=c99'
4051         _cflags_speed='-O5'
4052         _cflags_size='-O5 -xspace'
4053         _flags_filter=suncc_flags
4054     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4055         _type=pathscale
4056         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4057         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4058         _cflags_speed='-O2'
4059         _cflags_size='-Os'
4060         _flags_filter='filter_out -Wdisabled-optimization'
4061     elif $_cc -v 2>&1 | grep -q Open64; then
4062         _type=open64
4063         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4064         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4065         _cflags_speed='-O2'
4066         _cflags_size='-Os'
4067         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4068     elif $_cc -V 2>&1 | grep -q Portland; then
4069         _type=pgi
4070         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
4071         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
4072         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
4073         _cflags_size="-O2 -Munroll=c:1 $opt_common"
4074         _cflags_noopt="-O"
4075         _flags_filter=pgi_flags
4076     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4077         _type=armasm
4078         _ident=$($_cc | head -n1)
4079         # 4509: "This form of conditional instruction is deprecated"
4080         _flags="-nologo -ignore 4509"
4081         _flags_filter=armasm_flags
4082     elif $_cc 2>&1 | grep -q Intel; then
4083         _type=icl
4084         _ident=$($_cc 2>&1 | head -n1)
4085         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4086         # Not only is O3 broken on 13.x+ but it is slower on all previous
4087         # versions (tested) as well.
4088         _cflags_speed="-O2"
4089         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4090         if $_cc 2>&1 | grep -q Linker; then
4091             _ld_o='-out:$@'
4092         else
4093             _ld_o='-Fe$@'
4094         fi
4095         _cc_o='-Fo$@'
4096         _cc_e='-P'
4097         _flags_filter=icl_flags
4098         _ld_lib='lib%.a'
4099         _ld_path='-libpath:'
4100         # -Qdiag-error to make icl error when seeing certain unknown arguments
4101         _flags='-nologo -Qdiag-error:4044,10157'
4102         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4103         # with MSVC which enables it by default.
4104         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4105         disable stripping
4106     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4107         # lld can emulate multiple different linkers; in ms link.exe mode,
4108         # the -? parameter gives the help output which contains an identifyable
4109         # string, while it gives an error in other modes.
4110         _type=lld-link
4111         # The link.exe mode doesn't have a switch for getting the version,
4112         # but we can force it back to gnu mode and get the version from there.
4113         _ident=$($_cc -flavor gnu --version)
4114         _ld_o='-out:$@'
4115         _flags_filter=msvc_flags
4116         _ld_lib='lib%.a'
4117         _ld_path='-libpath:'
4118     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4119         _type=msvc
4120         _ident=$($_cc 2>&1 | head -n1)
4121         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4122         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4123         _cflags_speed="-O2"
4124         _cflags_size="-O1"
4125         if $_cc -nologo- 2>&1 | grep -q Linker; then
4126             _ld_o='-out:$@'
4127         else
4128             _ld_o='-Fe$@'
4129         fi
4130         _cc_o='-Fo$@'
4131         _cc_e='-P -Fi$@'
4132         _flags_filter=msvc_flags
4133         _ld_lib='lib%.a'
4134         _ld_path='-libpath:'
4135         _flags='-nologo'
4136         disable stripping
4137     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4138         _type=cparser
4139         _ident=$($_cc --version | head -n1)
4140         _depflags='-MMD'
4141         _cflags_speed='-O4'
4142         _cflags_size='-O2'
4143         _flags_filter=cparser_flags
4144     fi
4145
4146     eval ${pfx}_type=\$_type
4147     eval ${pfx}_ident=\$_ident
4148 }
4149
4150 set_ccvars(){
4151     eval ${1}_C=\${_cc_c-\${${1}_C}}
4152     eval ${1}_E=\${_cc_e-\${${1}_E}}
4153     eval ${1}_O=\${_cc_o-\${${1}_O}}
4154
4155     if [ -n "$_depflags" ]; then
4156         eval ${1}_DEPFLAGS=\$_depflags
4157     else
4158         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4159         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4160         eval DEP${1}FLAGS=\$_flags
4161     fi
4162 }
4163
4164 probe_cc cc "$cc" "true"
4165 cflags_filter=$_flags_filter
4166 cflags_speed=$_cflags_speed
4167 cflags_size=$_cflags_size
4168 cflags_noopt=$_cflags_noopt
4169 add_cflags $_flags $_cflags
4170 cc_ldflags=$_ldflags
4171 set_ccvars CC
4172
4173 probe_cc hostcc "$host_cc"
4174 host_cflags_filter=$_flags_filter
4175 add_host_cflags  $_flags $_cflags
4176 set_ccvars HOSTCC
4177
4178 test -n "$cc_type" && enable $cc_type ||
4179     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4180
4181 : ${as_default:=$cc}
4182 : ${objcc_default:=$cc}
4183 : ${dep_cc_default:=$cc}
4184 : ${ld_default:=$cc}
4185 : ${host_ld_default:=$host_cc}
4186 set_default ar as objcc dep_cc ld ln_s host_ld windres
4187
4188 probe_cc as "$as"
4189 asflags_filter=$_flags_filter
4190 add_asflags $_flags $_cflags
4191 set_ccvars AS
4192
4193 probe_cc objcc "$objcc"
4194 objcflags_filter=$_flags_filter
4195 add_objcflags $_flags $_cflags
4196 set_ccvars OBJC
4197
4198 probe_cc ld "$ld"
4199 ldflags_filter=$_flags_filter
4200 add_ldflags $_flags $_ldflags
4201 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4202 LD_O=${_ld_o-$LD_O}
4203 LD_LIB=${_ld_lib-$LD_LIB}
4204 LD_PATH=${_ld_path-$LD_PATH}
4205
4206 probe_cc hostld "$host_ld"
4207 host_ldflags_filter=$_flags_filter
4208 add_host_ldflags $_flags $_ldflags
4209 HOSTLD_O=${_ld_o-$HOSTLD_O}
4210
4211 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4212     probe_cc depcc "$dep_cc"
4213     CCDEP=${_DEPCMD:-$DEPCMD}
4214     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4215     DEPCCFLAGS=$_flags
4216 fi
4217
4218 if $ar 2>&1 | grep -q Microsoft; then
4219     arflags="-nologo"
4220     ar_o='-out:$@'
4221 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
4222     arflags="rq"
4223     ar_o='$@'
4224 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
4225     arflags='-Xany -r -c'
4226     ar_o='$@'
4227 elif $ar 2>&1 | grep -q "\[D\] "; then
4228     arflags="rcD"
4229     ar_o='$@'
4230 else
4231     arflags="rc"
4232     ar_o='$@'
4233 fi
4234
4235 add_cflags $extra_cflags
4236 add_cxxflags $extra_cxxflags
4237 add_objcflags $extra_objcflags
4238 add_asflags $extra_cflags
4239
4240 if test -n "$sysroot"; then
4241     case "$cc_type" in
4242         gcc|llvm_gcc|clang)
4243             add_cppflags --sysroot="$sysroot"
4244             add_ldflags --sysroot="$sysroot"
4245 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
4246             add_cppflags -isysroot "$sysroot"
4247             add_ldflags -isysroot "$sysroot"
4248         ;;
4249         tms470)
4250             add_cppflags -I"$sysinclude"
4251             add_ldflags  --sysroot="$sysroot"
4252         ;;
4253     esac
4254 fi
4255
4256 if test "$cpu" = host; then
4257     enabled cross_compile &&
4258         die "--cpu=host makes no sense when cross-compiling."
4259
4260     case "$cc_type" in
4261         gcc|llvm_gcc)
4262             check_native(){
4263                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4264                 sed -n "/cc1.*$1=/{
4265                             s/.*$1=\\([^ ]*\\).*/\\1/
4266                             p
4267                             q
4268                         }" $TMPE
4269             }
4270             cpu=$(check_native -march || check_native -mcpu)
4271         ;;
4272         clang)
4273             check_native(){
4274                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4275                 sed -n "/cc1.*-target-cpu /{
4276                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4277                             p
4278                             q
4279                         }" $TMPE
4280             }
4281             cpu=$(check_native -march)
4282         ;;
4283     esac
4284
4285     test "${cpu:-host}" = host &&
4286         die "--cpu=host not supported with compiler $cc"
4287 fi
4288
4289 # Deal with common $arch aliases
4290 case "$arch" in
4291     aarch64|arm64)
4292         arch="aarch64"
4293     ;;
4294     arm*|iPad*|iPhone*)
4295         arch="arm"
4296     ;;
4297     mips*|IP*)
4298         case "$arch" in
4299         *el)
4300             add_cppflags -EL
4301             add_ldflags -EL
4302         ;;
4303         *eb)
4304             add_cppflags -EB
4305             add_ldflags -EB
4306         ;;
4307         esac
4308         arch="mips"
4309     ;;
4310     parisc*|hppa*)
4311         arch="parisc"
4312     ;;
4313     "Power Macintosh"|ppc*|powerpc*)
4314         arch="ppc"
4315     ;;
4316     s390|s390x)
4317         arch="s390"
4318     ;;
4319     sh4|sh)
4320         arch="sh4"
4321     ;;
4322     sun4*|sparc*)
4323         arch="sparc"
4324     ;;
4325     tilegx|tile-gx)
4326         arch="tilegx"
4327     ;;
4328     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4329         arch="x86"
4330     ;;
4331 esac
4332
4333 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4334 enable $arch
4335
4336 # Add processor-specific flags
4337 if enabled aarch64; then
4338
4339     case $cpu in
4340         armv*)
4341             cpuflags="-march=$cpu"
4342         ;;
4343         *)
4344             cpuflags="-mcpu=$cpu"
4345         ;;
4346     esac
4347
4348 elif enabled alpha; then
4349
4350     cpuflags="-mcpu=$cpu"
4351
4352 elif enabled arm; then
4353
4354     check_arm_arch() {
4355         check_cpp_condition stddef.h \
4356             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4357             $cpuflags
4358     }
4359
4360     probe_arm_arch() {
4361         if   check_arm_arch 4;        then echo armv4
4362         elif check_arm_arch 4T;       then echo armv4t
4363         elif check_arm_arch 5;        then echo armv5
4364         elif check_arm_arch 5E;       then echo armv5e
4365         elif check_arm_arch 5T;       then echo armv5t
4366         elif check_arm_arch 5TE;      then echo armv5te
4367         elif check_arm_arch 5TEJ;     then echo armv5te
4368         elif check_arm_arch 6;        then echo armv6
4369         elif check_arm_arch 6J;       then echo armv6j
4370         elif check_arm_arch 6K;       then echo armv6k
4371         elif check_arm_arch 6Z;       then echo armv6z
4372         elif check_arm_arch 6ZK;      then echo armv6zk
4373         elif check_arm_arch 6T2;      then echo armv6t2
4374         elif check_arm_arch 7;        then echo armv7
4375         elif check_arm_arch 7A  7_A;  then echo armv7-a
4376         elif check_arm_arch 7S;       then echo armv7-a
4377         elif check_arm_arch 7R  7_R;  then echo armv7-r
4378         elif check_arm_arch 7M  7_M;  then echo armv7-m
4379         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4380         elif check_arm_arch 8A  8_A;  then echo armv8-a
4381         fi
4382     }
4383
4384     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4385
4386     case $cpu in
4387         armv*)
4388             cpuflags="-march=$cpu"
4389             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4390         ;;
4391         *)
4392             cpuflags="-mcpu=$cpu"
4393             case $cpu in
4394                 cortex-a*)                               subarch=armv7a  ;;
4395                 cortex-r*)                               subarch=armv7r  ;;
4396                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4397                 arm11*)                                  subarch=armv6   ;;
4398                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4399                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4400                 *)                             subarch=$(probe_arm_arch) ;;
4401             esac
4402         ;;
4403     esac
4404
4405     case "$subarch" in
4406         armv5t*)    enable fast_clz                ;;
4407         armv[6-8]*)
4408             enable fast_clz
4409             disabled fast_unaligned || enable fast_unaligned
4410             ;;
4411     esac
4412
4413 elif enabled avr32; then
4414
4415     case $cpu in
4416         ap7[02]0[0-2])
4417             subarch="avr32_ap"
4418             cpuflags="-mpart=$cpu"
4419         ;;
4420         ap)
4421             subarch="avr32_ap"
4422             cpuflags="-march=$cpu"
4423         ;;
4424         uc3[ab]*)
4425             subarch="avr32_uc"
4426             cpuflags="-mcpu=$cpu"
4427         ;;
4428         uc)
4429             subarch="avr32_uc"
4430             cpuflags="-march=$cpu"
4431         ;;
4432     esac
4433
4434 elif enabled bfin; then
4435
4436     cpuflags="-mcpu=$cpu"
4437
4438 elif enabled mips; then
4439
4440     cpuflags="-march=$cpu"
4441
4442     if [ "$cpu" != "generic" ]; then
4443         disable mips32r2
4444         disable mips32r5
4445         disable mips64r2
4446         disable mips32r6
4447         disable mips64r6
4448         disable loongson2
4449         disable loongson3
4450
4451         case $cpu in
4452             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4453                 enable mips32r2
4454                 disable msa
4455             ;;
4456             p5600|i6400|p6600)
4457                 disable mipsdsp
4458                 disable mipsdspr2
4459             ;;
4460             loongson*)
4461                 enable loongson2
4462                 enable loongson3
4463                 enable local_aligned_8 local_aligned_16 local_aligned_32
4464                 enable simd_align_16
4465                 enable fast_64bit
4466                 enable fast_clz
4467                 enable fast_cmov
4468                 enable fast_unaligned
4469                 disable aligned_stack
4470                 disable mipsfpu
4471                 disable mipsdsp
4472                 disable mipsdspr2
4473                 case $cpu in
4474                     loongson3*)
4475                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4476                     ;;
4477                     loongson2e)
4478                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4479                     ;;
4480                     loongson2f)
4481                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4482                     ;;
4483                 esac
4484             ;;
4485             *)
4486                 # Unknown CPU. Disable everything.
4487                 warn "unknown CPU. Disabling all MIPS optimizations."
4488                 disable mipsfpu
4489                 disable mipsdsp
4490                 disable mipsdspr2
4491                 disable msa
4492                 disable mmi
4493             ;;
4494         esac
4495
4496         case $cpu in
4497             24kc)
4498                 disable mipsfpu
4499                 disable mipsdsp
4500                 disable mipsdspr2
4501             ;;
4502             24kf*)
4503                 disable mipsdsp
4504                 disable mipsdspr2
4505             ;;
4506             24kec|34kc|1004kc)
4507                 disable mipsfpu
4508                 disable mipsdspr2
4509             ;;
4510             24kef*|34kf*|1004kf*)
4511                 disable mipsdspr2
4512             ;;
4513             74kc)
4514                 disable mipsfpu
4515             ;;
4516             p5600)
4517                 enable mips32r5
4518                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4519             ;;
4520             i6400)
4521                 enable mips64r6
4522                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4523             ;;
4524             p6600)
4525                 enable mips64r6
4526                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4527             ;;
4528         esac
4529     else
4530         # We do not disable anything. Is up to the user to disable the unwanted features.
4531         warn 'generic cpu selected'
4532     fi
4533
4534 elif enabled ppc; then
4535
4536     disable ldbrx
4537
4538     case $(tolower $cpu) in
4539         601|ppc601|powerpc601)
4540             cpuflags="-mcpu=601"
4541             disable altivec
4542         ;;
4543         603*|ppc603*|powerpc603*)
4544             cpuflags="-mcpu=603"
4545             disable altivec
4546         ;;
4547         604*|ppc604*|powerpc604*)
4548             cpuflags="-mcpu=604"
4549             disable altivec
4550         ;;
4551         g3|75*|ppc75*|powerpc75*)
4552             cpuflags="-mcpu=750"
4553             disable altivec
4554         ;;
4555         g4|745*|ppc745*|powerpc745*)
4556             cpuflags="-mcpu=7450"
4557             disable vsx
4558         ;;
4559         74*|ppc74*|powerpc74*)
4560             cpuflags="-mcpu=7400"
4561             disable vsx
4562         ;;
4563         g5|970|ppc970|powerpc970)
4564             cpuflags="-mcpu=970"
4565             disable vsx
4566         ;;
4567         power[3-6]*)
4568             cpuflags="-mcpu=$cpu"
4569             disable vsx
4570         ;;
4571         power[7-8]*)
4572             cpuflags="-mcpu=$cpu"
4573         ;;
4574         cell)
4575             cpuflags="-mcpu=cell"
4576             enable ldbrx
4577             disable vsx
4578         ;;
4579         e500mc)
4580             cpuflags="-mcpu=e500mc"
4581             disable altivec
4582         ;;
4583         e500v2)
4584             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4585             disable altivec
4586             disable dcbzl
4587         ;;
4588         e500)
4589             cpuflags="-mcpu=8540 -mhard-float"
4590             disable altivec
4591             disable dcbzl
4592         ;;
4593     esac
4594
4595 elif enabled sparc; then
4596
4597     case $cpu in
4598         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4599             cpuflags="-mcpu=$cpu"
4600         ;;
4601         ultrasparc*|niagara[234])
4602             cpuflags="-mcpu=$cpu"
4603         ;;
4604     esac
4605
4606 elif enabled x86; then
4607
4608     case $cpu in
4609         i[345]86|pentium)
4610             cpuflags="-march=$cpu"
4611             disable i686
4612             disable mmx
4613         ;;
4614         # targets that do NOT support nopl and conditional mov (cmov)
4615         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4616             cpuflags="-march=$cpu"
4617             disable i686
4618         ;;
4619         # targets that do support nopl and conditional mov (cmov)
4620         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4621         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4622         |amdfam10|barcelona|b[dt]ver*|znver*)
4623             cpuflags="-march=$cpu"
4624             enable i686
4625             enable fast_cmov
4626         ;;
4627         # targets that do support conditional mov but on which it's slow
4628         pentium4|pentium4m|prescott|nocona)
4629             cpuflags="-march=$cpu"
4630             enable i686
4631             disable fast_cmov
4632         ;;
4633     esac
4634
4635 fi
4636
4637 if [ "$cpu" != generic ]; then
4638     add_cflags  $cpuflags
4639     add_asflags $cpuflags
4640     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4641 fi
4642
4643 # compiler sanity check
4644 check_exec <<EOF
4645 int main(void){ return 0; }
4646 EOF
4647 if test "$?" != 0; then
4648     echo "$cc is unable to create an executable file."
4649     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4650         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4651         echo "Only do this if you know what cross compiling means."
4652     fi
4653     die "C compiler test failed."
4654 fi
4655
4656 add_cppflags -D_ISOC99_SOURCE
4657 add_cxxflags -D__STDC_CONSTANT_MACROS
4658 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4659
4660 # some compilers silently accept -std=c11, so we also need to check that the
4661 # version macro is defined properly
4662 if test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L"; then
4663     add_cflags -std=c11
4664 else
4665     check_cflags -std=c99
4666 fi
4667
4668 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4669 #include <stdlib.h>
4670 EOF
4671 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4672 #include <stdlib.h>
4673 EOF
4674
4675 add_host_cppflags -D_ISOC99_SOURCE
4676 check_host_cflags -std=c99
4677 check_host_cflags -Wall
4678 check_host_cflags -O3
4679
4680 check_64bit(){
4681     arch32=$1
4682     arch64=$2
4683     expr=$3
4684     check_code cc "" "int test[2*($expr) - 1]" &&
4685         subarch=$arch64 || subarch=$arch32
4686 }
4687
4688 case "$arch" in
4689     aarch64|alpha|ia64)
4690         spic=$shared
4691     ;;
4692     mips)
4693         check_64bit mips mips64 '_MIPS_SIM > 1'
4694         spic=$shared
4695     ;;
4696     parisc)
4697         check_64bit parisc parisc64 'sizeof(void *) > 4'
4698         spic=$shared
4699     ;;
4700     ppc)
4701         check_64bit ppc ppc64 'sizeof(void *) > 4'
4702         spic=$shared
4703     ;;
4704     s390)
4705         check_64bit s390 s390x 'sizeof(void *) > 4'
4706         spic=$shared
4707     ;;
4708     sparc)
4709         check_64bit sparc sparc64 'sizeof(void *) > 4'
4710         spic=$shared
4711     ;;
4712     x86)
4713         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4714         # Treat x32 as x64 for now. Note it also needs spic=$shared
4715         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4716             subarch=x86_64
4717         if test "$subarch" = "x86_64"; then
4718             spic=$shared
4719         fi
4720     ;;
4721     ppc)
4722         check_cc <<EOF && subarch="ppc64"
4723         int test[(int)sizeof(char*) - 7];
4724 EOF
4725     ;;
4726 esac
4727
4728 enable $subarch
4729 enabled spic && enable_weak pic
4730
4731 # OS specific
4732 case $target_os in
4733     aix)
4734         SHFLAGS=-shared
4735         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4736         enabled shared && add_ldflags -Wl,-brtl
4737         ;;
4738     android)
4739         disable symver
4740         enable section_data_rel_ro
4741         SLIB_INSTALL_NAME='$(SLIBNAME)'
4742         SLIB_INSTALL_LINKS=
4743         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4744         ;;
4745     haiku)
4746         prefix_default="/boot/common"
4747         network_extralibs="-lnetwork"
4748         host_libs=
4749         ;;
4750     sunos)
4751         SHFLAGS='-shared -Wl,-h,$$(@F)'
4752         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4753         network_extralibs="-lsocket -lnsl"
4754         add_cppflags -D__EXTENSIONS__
4755         # When using suncc to build, the Solaris linker will mark
4756         # an executable with each instruction set encountered by
4757         # the Solaris assembler.  As our libraries contain their own
4758         # guards for processor-specific code, instead suppress
4759         # generation of the HWCAPS ELF section on Solaris x86 only.
4760         enabled_all suncc x86 &&
4761             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4762             add_ldflags -Wl,-M,mapfile
4763         nm_default='nm -P -g'
4764         version_script='-M'
4765         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
4766         ;;
4767     netbsd)
4768         disable symver
4769         oss_indev_extralibs="-lossaudio"
4770         oss_outdev_extralibs="-lossaudio"
4771         enabled gcc || check_ldflags -Wl,-zmuldefs
4772         ;;
4773     openbsd|bitrig)
4774         disable symver
4775         SHFLAGS='-shared'
4776         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4777         SLIB_INSTALL_LINKS=
4778         oss_indev_extralibs="-lossaudio"
4779         oss_outdev_extralibs="-lossaudio"
4780         ;;
4781     dragonfly)
4782         disable symver
4783         ;;
4784     freebsd)
4785         ;;
4786     bsd/os)
4787         add_extralibs -lpoll -lgnugetopt
4788         strip="strip -d"
4789         ;;
4790     darwin)
4791         enabled ppc && add_asflags -force_cpusubtype_ALL
4792         install_name_dir_default='$(SHLIBDIR)'
4793         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4794         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4795         strip="${strip} -x"
4796         add_ldflags -Wl,-dynamic,-search_paths_first
4797         SLIBSUF=".dylib"
4798         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4799         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4800         objformat="macho"
4801         enabled x86_64 && objformat="macho64"
4802         enabled_any pic shared x86_64 ||
4803             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4804         check_header dispatch/dispatch.h &&
4805             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
4806         version_script='-exported_symbols_list'
4807         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
4808         ;;
4809     msys*)
4810         die "Native MSYS builds are discouraged, please use the MINGW environment."
4811         ;;
4812     mingw32*|mingw64*)
4813         if test $target_os = "mingw32ce"; then
4814             disable network
4815         else
4816             target_os=mingw32
4817         fi
4818         decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
4819         decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
4820         LIBTARGET=i386
4821         if enabled x86_64; then
4822             LIBTARGET="i386:x86-64"
4823         elif enabled arm; then
4824             LIBTARGET=arm-wince
4825         fi
4826         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4827         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4828         shlibdir_default="$bindir_default"
4829         SLIBPREF=""
4830         SLIBSUF=".dll"
4831         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4832         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4833         dlltool="${cross_prefix}dlltool"
4834         if check_cmd lib.exe -list; then
4835             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4836             if enabled x86_64; then
4837                 LIBTARGET=x64
4838             fi
4839         elif check_cmd $dlltool --version; then
4840             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4841         fi
4842         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4843         SLIB_INSTALL_LINKS=
4844         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4845         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4846         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--disable-auto-image-base'
4847         objformat="win32"
4848         ranlib=:
4849         enable dos_paths
4850         check_ldflags -Wl,--nxcompat,--dynamicbase
4851         # Lets work around some stupidity in binutils.
4852         # ld will strip relocations from executables even though we need them
4853         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4854         # however ld then forgets what the entry point should be (oops) so we
4855         # have to manually (re)set it.
4856         if enabled x86_32; then
4857             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
4858         elif enabled x86_64; then
4859             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
4860             check_ldflags -Wl,--high-entropy-va # binutils 2.25
4861             # Set image base >4GB for extra entropy with HEASLR
4862             add_ldexeflags -Wl,--image-base,0x140000000
4863             append SHFLAGS -Wl,--image-base,0x180000000
4864         fi
4865         ;;
4866     win32|win64)
4867         disable symver
4868         if enabled shared; then
4869             # Link to the import library instead of the normal static library
4870             # for shared libs.
4871             LD_LIB='%.lib'
4872             # Cannot build both shared and static libs with MSVC or icl.
4873             disable static
4874         fi
4875         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4876         shlibdir_default="$bindir_default"
4877         SLIBPREF=""
4878         SLIBSUF=".dll"
4879         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4880         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4881         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4882         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4883         SLIB_INSTALL_LINKS=
4884         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4885         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4886         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4887         objformat="win32"
4888         ranlib=:
4889         enable dos_paths
4890         ;;
4891     cygwin*)
4892         target_os=cygwin
4893         shlibdir_default="$bindir_default"
4894         SLIBPREF="cyg"
4895         SLIBSUF=".dll"
4896         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4897         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4898         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4899         SLIB_INSTALL_LINKS=
4900         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4901         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4902         objformat="win32"
4903         enable dos_paths
4904         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4905         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4906         ;;
4907     *-dos|freedos|opendos)
4908         network_extralibs="-lsocket"
4909         objformat="coff"
4910         enable dos_paths
4911         add_cppflags -U__STRICT_ANSI__
4912         ;;
4913     linux)
4914         enable dv1394
4915         enable section_data_rel_ro
4916         ;;
4917     irix*)
4918         target_os=irix
4919         ranlib="echo ignoring ranlib"
4920         ;;
4921     os/2*)
4922         strip="lxlite -CS"
4923         objformat="aout"
4924         add_cppflags -D_GNU_SOURCE
4925         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4926         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4927         LIBSUF="_s.a"
4928         SLIBPREF=""
4929         SLIBSUF=".dll"
4930         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4931         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4932         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
4933             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
4934             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
4935             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
4936             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
4937         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
4938             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
4939         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4940         SLIB_INSTALL_LINKS=
4941         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
4942         enable dos_paths
4943         enable_weak os2threads
4944         ;;
4945     gnu/kfreebsd)
4946         add_cppflags -D_BSD_SOURCE
4947         ;;
4948     gnu)
4949         ;;
4950     qnx)
4951         add_cppflags -D_QNX_SOURCE
4952         network_extralibs="-lsocket"
4953         ;;
4954     symbian)
4955         SLIBSUF=".dll"
4956         enable dos_paths
4957         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4958         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4959         add_ldflags -Wl,--target1-abs,--no-undefined \
4960                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4961                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4962         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4963                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4964                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4965         ;;
4966     osf1)
4967         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4968         ;;
4969     minix)
4970         ;;
4971     plan9)
4972         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4973                      -D_REENTRANT_SOURCE        \
4974                      -D_RESEARCH_SOURCE         \
4975                      -DFD_SETSIZE=96            \
4976                      -DHAVE_SOCK_OPTS
4977         add_compat strtod.o strtod=avpriv_strtod
4978         network_extralibs='-lbsd'
4979         exeobjs=compat/plan9/main.o
4980         disable ffserver
4981         cp_f='cp'
4982         ;;
4983     none)
4984         ;;
4985     *)
4986         die "Unknown OS '$target_os'."
4987         ;;
4988 esac
4989
4990 # test if creating links works
4991 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
4992 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
4993 mkdir "$link_dest"
4994 $ln_s "$link_dest" "$link_name"
4995 touch "$link_dest/test_file"
4996 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
4997     # create link to source path
4998     [ -e src ] && rm src
4999     $ln_s "$source_path" src
5000     source_link=src
5001 else
5002     # creating directory links doesn't work
5003     # fall back to using the full source path
5004     source_link="$source_path"
5005 fi
5006 # cleanup
5007 rm -r "$link_dest"
5008 rm -r "$link_name"
5009
5010 # determine libc flavour
5011
5012 probe_libc(){
5013     pfx=$1
5014     pfx_no_=${pfx%_}
5015     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5016     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5017         eval ${pfx}libc_type=uclibc
5018         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5019     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5020         eval ${pfx}libc_type=glibc
5021         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5022     # MinGW headers can be installed on Cygwin, so check for newlib first.
5023     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5024         eval ${pfx}libc_type=newlib
5025         add_${pfx}cppflags -U__STRICT_ANSI__
5026     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5027     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5028         eval ${pfx}libc_type=mingw64
5029         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5030             add_compat msvcrt/snprintf.o
5031             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5032         fi
5033         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5034         eval test \$${pfx_no_}cc_type = "gcc" &&
5035             add_${pfx}cppflags -D__printf__=__gnu_printf__
5036     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5037          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5038         eval ${pfx}libc_type=mingw32
5039         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5040             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5041             die "ERROR: MinGW32 runtime version must be >= 3.15."
5042         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5043         check_${pfx}cpp_condition _mingw.h "defined(_WIN32_WINNT) && _WIN32_WINNT >= 0x0502" ||
5044             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
5045         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700__" &&
5046             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5047         eval test \$${pfx_no_}cc_type = "gcc" &&
5048             add_${pfx}cppflags -D__printf__=__gnu_printf__
5049     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5050         eval ${pfx}libc_type=msvcrt
5051         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5052             if [ "$pfx" = host_ ]; then
5053                 add_host_cppflags -Dsnprintf=_snprintf
5054             else
5055                 add_compat strtod.o strtod=avpriv_strtod
5056                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5057                                              _snprintf=avpriv_snprintf  \
5058                                              vsnprintf=avpriv_vsnprintf
5059             fi
5060         fi
5061         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5062         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5063         # 0x601 by default unless something else is set by the user.
5064         # This can easily lead to us detecting functions only present
5065         # in such new versions and producing binaries requiring windows 7.0.
5066         # Therefore explicitly set the default to XP unless the user has
5067         # set something else on the command line.
5068         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5069         # family. For these cases, configure is free to use any functions
5070         # found in the SDK headers by default. (Alternatively, we could force
5071         # _WIN32_WINNT to 0x0602 in that case.)
5072         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5073             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
5074 #ifdef WINAPI_FAMILY
5075 #include <winapifamily.h>
5076 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5077 #error not desktop
5078 #endif
5079 #endif
5080 EOF
5081         if [ "$pfx" = "" ]; then
5082             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5083             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5084         fi
5085     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5086         eval ${pfx}libc_type=klibc
5087     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5088         eval ${pfx}libc_type=bionic
5089     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5090         eval ${pfx}libc_type=solaris
5091         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5092     fi
5093     check_${pfx}cc <<EOF
5094 #include <time.h>
5095 void *v = localtime_r;
5096 EOF
5097 test "$?" != 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
5098 #include <time.h>
5099 void *v = localtime_r;
5100 EOF
5101
5102 }
5103
5104 probe_libc
5105 test -n "$libc_type" && enable libc_$libc_type
5106 probe_libc host_
5107 test -n "$host_libc_type" && enable host_libc_$host_libc_type
5108
5109 case $libc_type in
5110     bionic)
5111         add_compat strtod.o strtod=avpriv_strtod
5112         ;;
5113 esac
5114
5115 # hacks for compiler/libc/os combinations
5116
5117 if enabled_all tms470 libc_glibc; then
5118     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
5119     add_cppflags -D__USER_LABEL_PREFIX__=
5120     add_cppflags -D__builtin_memset=memset
5121     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
5122     add_cflags   -pds=48    # incompatible redefinition of macro
5123 fi
5124
5125 if enabled_all ccc libc_glibc; then
5126     add_ldflags -Wl,-z,now  # calls to libots crash without this
5127 fi
5128
5129 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5130     add_cppflags '-I\$(SRC_PATH)/compat/float'
5131
5132 esc(){
5133     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
5134 }
5135
5136 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
5137
5138 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5139
5140 set_default libdir
5141 : ${shlibdir_default:="$libdir"}
5142 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5143
5144 set_default $PATHS_LIST
5145 set_default nm
5146
5147 # we need to build at least one lib type
5148 if ! enabled_any static shared; then
5149     cat <<EOF
5150 At least one library type must be built.
5151 Specify --enable-static to build the static libraries or --enable-shared to
5152 build the shared libraries as well. To only build the shared libraries specify
5153 --disable-static in addition to --enable-shared.
5154 EOF
5155     exit 1
5156 fi
5157
5158 die_license_disabled() {
5159     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
5160 }
5161
5162 die_license_disabled_gpl() {
5163     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
5164 }
5165
5166 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
5167 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
5168
5169 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
5170 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
5171
5172 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
5173
5174 disabled optimizations || check_cflags -fomit-frame-pointer
5175
5176 enable_weak_pic() {
5177     disabled pic && return
5178     enable pic
5179     add_cppflags -DPIC
5180     case "$target_os" in
5181     mingw*|cygwin*)
5182         ;;
5183     *)
5184         add_cflags -fPIC
5185         ;;
5186     esac
5187     add_asflags  -fPIC
5188 }
5189
5190 enabled pic && enable_weak_pic
5191
5192 check_cc <<EOF || die "Symbol mangling check failed."
5193 int ff_extern;
5194 EOF
5195 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5196 extern_prefix=${sym%%ff_extern*}
5197
5198 check_cc <<EOF && enable_weak inline_asm
5199 void foo(void) { __asm__ volatile ("" ::); }
5200 EOF
5201
5202 _restrict=
5203 for restrict_keyword in restrict __restrict__ __restrict; do
5204     check_cc <<EOF && _restrict=$restrict_keyword && break
5205 void foo(char * $restrict_keyword p);
5206 EOF
5207 done
5208
5209 check_cc <<EOF && enable pragma_deprecated
5210 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
5211 EOF
5212
5213 check_cc <<EOF && enable attribute_packed
5214 struct { int x; } __attribute__((packed)) x;
5215 EOF
5216
5217 check_cc <<EOF && enable attribute_may_alias
5218 union { int x; } __attribute__((may_alias)) x;
5219 EOF
5220
5221 check_cc <<EOF || die "endian test failed"
5222 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5223 EOF
5224 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5225
5226 if ! enabled ppc64 || enabled bigendian; then
5227     disable vsx
5228 fi
5229
5230 check_gas() {
5231     log "check_gas using '$as' as AS"
5232     # :vararg is used on aarch64, arm and ppc altivec
5233     check_as <<EOF || return 1
5234 .macro m n, y:vararg=0
5235 \n: .int \y
5236 .endm
5237 m x
5238 EOF
5239     # .altmacro is only used in arm asm
5240     ! enabled arm || check_as <<EOF || return 1
5241 .altmacro
5242 EOF
5243     enable gnu_as
5244     return 0
5245 }
5246
5247 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5248     nogas=:
5249     enabled_any arm aarch64 && nogas=die
5250     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5251     as_noop=-v
5252
5253     case $as_type in
5254         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5255         gcc)  gaspp_as_type=gas ;;
5256         *)    gaspp_as_type=$as_type ;;
5257     esac
5258
5259     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5260
5261     test "${as#*gas-preprocessor.pl}" != "$as" ||
5262     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5263         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5264
5265     if ! check_gas ; then
5266         as=${gas:=$as}
5267         check_gas || \
5268             $nogas "GNU assembler not found, install/update gas-preprocessor"
5269     fi
5270
5271     check_as <<EOF && enable as_func
5272 .func test
5273 .endfunc
5274 EOF
5275 fi
5276
5277 check_inline_asm inline_asm_labels '"1:\n"'
5278
5279 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5280
5281 if enabled aarch64; then
5282     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5283     # internal assembler in clang 3.3 does not support this instruction
5284     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5285     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5286
5287     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5288
5289 elif enabled alpha; then
5290
5291     check_cflags -mieee
5292
5293 elif enabled arm; then
5294
5295     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
5296
5297     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
5298 float func(float a, float b){ return a+b; }
5299 EOF
5300
5301     enabled thumb && check_cflags -mthumb || check_cflags -marm
5302
5303     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
5304         enable vfp_args
5305     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5306         enable vfp_args
5307     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5308         case "${cross_prefix:-$cc}" in
5309             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
5310             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
5311 __asm__ (".eabi_attribute 28, 1");
5312 int main(void) { return 0; }
5313 EOF
5314         esac
5315         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5316     fi
5317
5318     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5319     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5320     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5321     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5322     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5323     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5324     enabled setend  && check_insn setend  'setend be'
5325
5326     [ $target_os = linux ] || [ $target_os = android ] ||
5327         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5328             $ARCH_EXT_LIST_ARM
5329
5330     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5331
5332     check_as <<EOF && enable as_dn_directive
5333 ra .dn d0.i16
5334 .unreq ra
5335 EOF
5336     check_as <<EOF && enable as_fpu_directive
5337 .fpu neon
5338 EOF
5339
5340     # llvm's integrated assembler supports .object_arch from llvm 3.5
5341     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
5342 .object_arch armv4
5343 EOF
5344
5345     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5346
5347 elif enabled mips; then
5348
5349     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5350     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5351     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5352
5353     # Enable minimum ISA based on selected options
5354     if enabled mips64; then
5355         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5356         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5357         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5358     else
5359         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5360         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5361         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5362         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5363     fi
5364
5365     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5366     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5367     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
5368     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5369     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5370
5371 elif enabled parisc; then
5372
5373     if enabled gcc; then
5374         case $($cc -dumpversion) in
5375             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5376         esac
5377     fi
5378
5379 elif enabled ppc; then
5380
5381     enable local_aligned_8 local_aligned_16 local_aligned_32
5382
5383     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5384     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5385     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5386     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5387
5388     # AltiVec flags: The FSF version of GCC differs from the Apple version
5389     if enabled altivec; then
5390         check_cflags -maltivec -mabi=altivec &&
5391         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
5392         check_cflags -faltivec
5393
5394         # check if our compiler supports Motorola AltiVec C API
5395         check_cc <<EOF || disable altivec
5396 $inc_altivec_h
5397 int main(void) {
5398     vector signed int v1 = (vector signed int) { 0 };
5399     vector signed int v2 = (vector signed int) { 1 };
5400     v1 = vec_add(v1, v2);
5401     return 0;
5402 }
5403 EOF
5404
5405         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5406     fi
5407
5408     if enabled vsx; then
5409         check_cflags -mvsx &&
5410         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
5411     fi
5412
5413     if enabled power8; then
5414         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
5415     fi
5416
5417 elif enabled x86; then
5418
5419     check_builtin rdtsc    intrin.h   "__rdtsc()"
5420     check_builtin mm_empty mmintrin.h "_mm_empty()"
5421
5422     enable local_aligned_8 local_aligned_16 local_aligned_32
5423
5424     # check whether EBP is available on x86
5425     # As 'i' is stored on the stack, this program will crash
5426     # if the base pointer is used to access it because the
5427     # base pointer is cleared in the inline assembly code.
5428     check_exec_crash <<EOF && enable ebp_available
5429 volatile int i=0;
5430 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5431 return i;
5432 EOF
5433
5434     # check whether EBX is available on x86
5435     check_inline_asm ebx_available '""::"b"(0)' &&
5436         check_inline_asm ebx_available '"":::"%ebx"'
5437
5438     # check whether xmm clobbers are supported
5439     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5440
5441     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5442         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5443
5444     # check whether binutils is new enough to compile SSSE3/MMXEXT
5445     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5446     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5447
5448     if ! disabled_any asm mmx yasm; then
5449         if check_cmd $yasmexe --version; then
5450             enabled x86_64 && yasm_extra="-m amd64"
5451             yasm_debug="-g dwarf2"
5452         elif check_cmd nasm -v; then
5453             yasmexe=nasm
5454             yasm_debug="-g -F dwarf"
5455             if enabled x86_64; then
5456                 case "$objformat" in
5457                     elf)   objformat=elf64 ;;
5458                     win32) objformat=win64 ;;
5459                 esac
5460             fi
5461         fi
5462
5463         YASMFLAGS="-f $objformat $yasm_extra"
5464         enabled pic               && append YASMFLAGS "-DPIC"
5465         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
5466         case "$objformat" in
5467             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
5468         esac
5469
5470         check_yasm "movbe ecx, [5]" && enable yasm ||
5471             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
5472         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
5473         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
5474         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
5475         check_yasm "CPU amdnop" || disable cpunop
5476     fi
5477
5478     case "$cpu" in
5479         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5480             disable fast_clz
5481         ;;
5482     esac
5483
5484 fi
5485
5486 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
5487
5488 check_ldflags -Wl,--as-needed
5489 check_ldflags -Wl,-z,noexecstack
5490
5491 if check_func dlopen && check_func dlsym; then
5492     ldl=
5493 elif check_func dlopen -ldl && check_func dlsym -ldl; then
5494     ldl=-ldl
5495 fi
5496
5497 avisynth_demuxer_extralibs='$ldl'
5498 cuda_extralibs='$ldl'
5499 decklink_outdev_extralibs="$decklink_outdev_extralibs $ldl"
5500 decklink_indev_extralibs="$decklink_indev_extralibs $ldl"
5501 frei0r_filter_extralibs='$ldl'
5502 frei0r_src_filter_extralibs='$ldl'
5503 ladspa_filter_extralibs='$ldl'
5504 nvenc_extralibs='$ldl'
5505 coreimage_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5506 coreimagesrc_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5507
5508 if ! disabled network; then
5509     check_func getaddrinfo $network_extralibs
5510     check_func inet_aton $network_extralibs
5511
5512     check_type netdb.h "struct addrinfo"
5513     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5514     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5515     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5516     check_type poll.h "struct pollfd"
5517     check_type netinet/sctp.h "struct sctp_event_subscribe"
5518     check_struct "sys/socket.h" "struct msghdr" msg_flags
5519     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5520     check_type netinet/in.h "struct sockaddr_in6"
5521     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5522     check_type "sys/types.h sys/socket.h" socklen_t
5523
5524     # Prefer arpa/inet.h over winsock2
5525     if check_header arpa/inet.h ; then
5526         check_func closesocket
5527     elif check_header winsock2.h ; then
5528         check_func_headers winsock2.h closesocket -lws2 &&
5529             network_extralibs="-lws2" ||
5530         { check_func_headers winsock2.h closesocket -lws2_32 &&
5531             network_extralibs="-lws2_32"; } || disable winsock2_h network
5532         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5533
5534         check_type ws2tcpip.h socklen_t
5535         check_type ws2tcpip.h "struct addrinfo"
5536         check_type ws2tcpip.h "struct group_source_req"
5537         check_type ws2tcpip.h "struct ip_mreq_source"
5538         check_type ws2tcpip.h "struct ipv6_mreq"
5539         check_type winsock2.h "struct pollfd"
5540         check_struct winsock2.h "struct sockaddr" sa_len
5541         check_type ws2tcpip.h "struct sockaddr_in6"
5542         check_type ws2tcpip.h "struct sockaddr_storage"
5543     else
5544         disable network
5545     fi
5546 fi
5547
5548 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5549 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5550 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5551 check_builtin sarestart signal.h "SA_RESTART"
5552 check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" -lpthread
5553 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5554 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5555 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5556 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5557
5558 case "$custom_allocator" in
5559     jemalloc)
5560         # jemalloc by default does not use a prefix
5561         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5562     ;;
5563     tcmalloc)
5564         require_pkg_config libtcmalloc gperftools/tcmalloc.h tc_malloc
5565         malloc_prefix=tc_
5566     ;;
5567 esac
5568
5569 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5570 check_func  ${malloc_prefix}memalign            && enable memalign
5571 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5572
5573 check_func  access
5574 check_func_headers stdlib.h arc4random
5575 check_func_headers time.h clock_gettime ||
5576     { check_lib time.h clock_gettime -lrt && LIBRT="-lrt"; }
5577 check_func  fcntl
5578 check_func  fork
5579 check_func  gethrtime
5580 check_func  getopt
5581 check_func  getrusage
5582 check_func  gettimeofday
5583 check_func  isatty
5584 check_func  mach_absolute_time
5585 check_func  mkstemp
5586 check_func  mmap
5587 check_func  mprotect
5588 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5589 check_func_headers time.h nanosleep ||
5590     { check_lib time.h nanosleep -lrt && LIBRT="-lrt"; }
5591 check_func  sched_getaffinity
5592 check_func  setrlimit
5593 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5594 check_func  strerror_r
5595 check_func  sysconf
5596 check_func  sysctl
5597 check_func  usleep
5598
5599 check_func_headers conio.h kbhit
5600 check_func_headers io.h setmode
5601 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5602 check_func_headers stdlib.h getenv
5603 check_func_headers sys/stat.h lstat
5604
5605 check_func_headers windows.h CoTaskMemFree -lole32
5606 check_func_headers windows.h GetProcessAffinityMask
5607 check_func_headers windows.h GetProcessTimes
5608 check_func_headers windows.h GetSystemTimeAsFileTime
5609 check_func_headers windows.h LoadLibrary
5610 check_func_headers windows.h MapViewOfFile
5611 check_func_headers windows.h PeekNamedPipe
5612 check_func_headers windows.h SetConsoleTextAttribute
5613 check_func_headers windows.h SetConsoleCtrlHandler
5614 check_func_headers windows.h Sleep
5615 check_func_headers windows.h VirtualAlloc
5616 check_struct windows.h "CONDITION_VARIABLE" Ptr
5617 check_func_headers glob.h glob
5618 enabled xlib &&
5619     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5620
5621 check_header AudioToolbox/AudioToolbox.h
5622 check_header direct.h
5623 check_header dirent.h
5624 check_header dlfcn.h
5625 check_header d3d11.h
5626 check_header dxva.h
5627 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5628 check_header io.h
5629 check_header libcrystalhd/libcrystalhd_if.h
5630 check_header mach/mach_time.h
5631 check_header malloc.h
5632 check_header net/udplite.h
5633 check_header poll.h
5634 check_header sys/mman.h
5635 check_header sys/param.h
5636 check_header sys/resource.h
5637 check_header sys/select.h
5638 check_header sys/time.h
5639 check_header sys/un.h
5640 check_header termios.h
5641 check_header unistd.h
5642 check_header valgrind/valgrind.h
5643 check_header vdpau/vdpau.h
5644 check_header vdpau/vdpau_x11.h
5645 check_header VideoDecodeAcceleration/VDADecoder.h
5646 check_header VideoToolbox/VideoToolbox.h
5647 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5648 enabled videotoolbox && check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferColorPrimaries_ITU_R_2020 -framework CoreVideo
5649 check_header windows.h
5650 check_header X11/extensions/XvMClib.h
5651 check_header asm/types.h
5652
5653 # it seems there are versions of clang in some distros that try to use the
5654 # gcc headers, which explodes for stdatomic
5655 # so we also check that atomics actually work here
5656 check_builtin stdatomic_h stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0)"
5657
5658 check_lib "windows.h shellapi.h" CommandLineToArgvW   -lshell32
5659 check_lib "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
5660 check_lib "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
5661
5662 check_lib "CoreServices/CoreServices.h" UTGetOSTypeFromString "-framework CoreServices"
5663
5664 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5665
5666 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5667 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5668 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5669 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5670 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5671
5672 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
5673 check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
5674 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
5675 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
5676 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5677 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5678 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
5679 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
5680
5681 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5682
5683 check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt
5684
5685 if ! disabled w32threads && ! enabled pthreads; then
5686     check_func_headers "windows.h process.h" _beginthreadex &&
5687         enable w32threads || disable w32threads
5688     if ! enabled w32threads && enabled winrt; then
5689         check_func_headers "windows.h" CreateThread &&
5690             enable w32threads || disable w32threads
5691     fi
5692 fi
5693
5694 # check for some common methods of building with pthread support
5695 # do this before the optional library checks as some of them require pthreads
5696 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5697     enable pthreads
5698     if check_func pthread_join -pthread && check_func pthread_create -pthread; then
5699         add_cflags -pthread
5700         add_extralibs -pthread
5701     elif check_func pthread_join -pthreads && check_func pthread_create -pthreads; then
5702         add_cflags -pthreads
5703         add_extralibs -pthreads
5704     elif check_func pthread_join -ldl -pthread && check_func pthread_create -ldl -pthread; then
5705         add_cflags -ldl -pthread
5706         add_extralibs -ldl -pthread
5707     elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
5708         add_extralibs -lpthreadGC2
5709     elif check_lib pthread.h pthread_join -lpthread && check_lib pthread.h pthread_create -lpthread; then
5710         :
5711     elif ! check_func pthread_join && ! check_func pthread_create; then
5712         disable pthreads
5713     fi
5714     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5715 fi
5716
5717
5718 if enabled pthreads; then
5719   check_func pthread_cancel
5720 fi
5721
5722 enabled pthreads &&
5723     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)"
5724
5725 disabled  zlib || check_lib  zlib.h      zlibVersion    -lz    || disable  zlib
5726 disabled bzlib || check_lib bzlib.h BZ2_bzlibVersion    -lbz2  || disable bzlib
5727 disabled  lzma || check_lib  lzma.h lzma_version_number -llzma || disable lzma
5728
5729 check_lib math.h sin -lm && LIBM="-lm"
5730 disabled crystalhd || check_lib "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd || disable crystalhd
5731
5732 atan2f_args=2
5733 copysign_args=2
5734 hypot_args=2
5735 ldexpf_args=2
5736 powf_args=2
5737
5738 for func in $MATH_FUNCS; do
5739     eval check_mathfunc $func \${${func}_args:-1}
5740 done
5741
5742 for func in $COMPLEX_FUNCS; do
5743     eval check_complexfunc $func \${${func}_args:-1}
5744 done
5745
5746 # these are off by default, so fail if requested and not available
5747 enabled avfoundation_indev && { check_header_objcc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
5748 enabled avfoundation_indev && { check_lib CoreGraphics/CoreGraphics.h CGGetActiveDisplayList -framework CoreGraphics ||
5749                                 check_lib ApplicationServices/ApplicationServices.h CGGetActiveDisplayList -framework ApplicationServices; }
5750 enabled cuda              && check_header cuda.h # this is not a dependency
5751 enabled cuvid             && { enabled cuda ||
5752                                die "ERROR: CUVID requires CUDA"; }
5753 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5754 enabled coreimage_filter  && { check_header_objcc QuartzCore/CoreImage.h || disable coreimage_filter; }
5755 enabled coreimagesrc_filter && { check_header_objcc QuartzCore/CoreImage.h || disable coreimagesrc_filter; }
5756 enabled decklink          && { { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; } &&
5757                                { check_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a060100" || die "ERROR: Decklink API version must be >= 10.6.1."; } }
5758 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
5759 enabled gmp               && require gmp gmp.h mpz_export -lgmp
5760 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
5761 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads &&
5762                                check_lib "dlfcn.h" dlopen -ldl || die "ERROR: jni not found"; }
5763 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
5764 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5765 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
5766 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
5767 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
5768 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5769                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
5770                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5771 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
5772 enabled libfdk_aac        && { use_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5773                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5774                                  warn "using libfdk without pkg-config"; } }
5775 flite_libs="-lflite_cmu_time_awb -lflite_cmu_us_awb -lflite_cmu_us_kal -lflite_cmu_us_kal16 -lflite_cmu_us_rms -lflite_cmu_us_slt -lflite_usenglish -lflite_cmulex -lflite"
5776 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_libs
5777 enabled fontconfig        && enable libfontconfig
5778 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
5779 enabled libfreetype       && require_libfreetype
5780 enabled libfribidi        && require_pkg_config fribidi fribidi.h fribidi_version_info
5781 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
5782 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5783                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
5784                                done || die "ERROR: libgsm not found"; }
5785 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
5786 enabled libkvazaar        && require_pkg_config "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
5787 enabled libmfx            && require_pkg_config libmfx "mfx/mfxvideo.h" MFXInit
5788 enabled libmodplug        && require_pkg_config libmodplug libmodplug/modplug.h ModPlug_Load
5789 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5790 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
5791 enabled libnpp            && require libnpp npp.h nppGetLibVersion -lnppi -lnppc
5792 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5793 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5794 enabled libopencv         && { check_header opencv2/core/core_c.h &&
5795                                { use_pkg_config opencv opencv2/core/core_c.h cvCreateImageHeader ||
5796                                  require opencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
5797                                require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader; }
5798 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
5799 enabled libopenjpeg       && { { check_lib openjpeg-2.1/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5800                                check_lib openjpeg-2.1/openjpeg.h opj_version -lopenjp2 ||
5801                                { check_lib openjpeg-2.0/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5802                                { check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5803                                { check_lib openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5804                                die "ERROR: libopenjpeg not found"; }
5805 enabled libopenmpt        && require_pkg_config "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create
5806 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
5807 enabled libpulse          && require_pkg_config libpulse pulse/pulseaudio.h pa_context_new
5808 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
5809 enabled librubberband     && require_pkg_config "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new
5810 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
5811 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
5812 enabled libsmbclient      && { use_pkg_config smbclient libsmbclient.h smbc_init ||
5813                                require smbclient libsmbclient.h smbc_init -lsmbclient; }
5814 enabled libsnappy         && require snappy snappy-c.h snappy_compress -lsnappy
5815 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr && LIBSOXR="-lsoxr"
5816 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
5817 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
5818 enabled libtesseract      && require_pkg_config tesseract tesseract/capi.h TessBaseAPICreate
5819 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
5820 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
5821                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
5822                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
5823 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
5824 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
5825 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
5826 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
5827
5828 enabled libvpx            && {
5829     enabled libvpx_vp8_decoder && {
5830         use_pkg_config "vpx >= 0.9.1" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
5831             check_lib "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
5832                 die "ERROR: libvpx decoder version must be >=0.9.1";
5833     }
5834     enabled libvpx_vp8_encoder && {
5835         use_pkg_config "vpx >= 0.9.7" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
5836             check_lib "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
5837                 die "ERROR: libvpx encoder version must be >=0.9.7";
5838     }
5839     enabled libvpx_vp9_decoder && {
5840         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
5841             check_lib "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx ||
5842                 disable libvpx_vp9_decoder;
5843     }
5844     enabled libvpx_vp9_encoder && {
5845         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
5846             check_lib "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx ||
5847                 disable libvpx_vp9_encoder;
5848     }
5849     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
5850         die "libvpx enabled but no supported decoders found"
5851     fi
5852 }
5853
5854 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
5855 enabled libwebp           && {
5856     enabled libwebp_encoder      && require_pkg_config "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
5857     enabled libwebp_anim_encoder && { use_pkg_config "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit || disable libwebp_anim_encoder; } }
5858 enabled libx264           && { use_pkg_config x264 "stdint.h x264.h" x264_encoder_encode ||
5859                                { require libx264 "stdint.h x264.h" x264_encoder_encode -lx264 &&
5860                                  warn "using libx264 without pkg-config"; } } &&
5861                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
5862                                die "ERROR: libx264 must be installed and version must be >= 0.118."; } &&
5863                              { check_cpp_condition x264.h "X264_MPEG2" &&
5864                                enable libx262; }
5865 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
5866                              { check_cpp_condition x265.h "X265_BUILD >= 68" ||
5867                                die "ERROR: libx265 version must be >= 68."; }
5868 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode -lxavs
5869 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
5870 enabled libzimg           && require_pkg_config "zimg >= 2.3.0" zimg.h zimg_get_api_version
5871 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
5872 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi &&
5873                              { check_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
5874                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
5875 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
5876 enabled mmal              && { check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
5877                                 { ! enabled cross_compile && {
5878                                     add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline ;
5879                                     add_extralibs -L/opt/vc/lib/ -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ;
5880                                     check_lib interface/mmal/mmal.h mmal_port_connect ; }
5881                                 check_lib interface/mmal/mmal.h mmal_port_connect ; } ||
5882                                die "ERROR: mmal not found"; }
5883 enabled mmal && check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"
5884
5885 enabled netcdf            && require_pkg_config netcdf netcdf.h nc_inq_libvers
5886 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
5887                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
5888                                die "ERROR: openal not found"; } &&
5889                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
5890                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
5891 enabled opencl            && { check_lib OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
5892                                check_lib CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
5893                                die "ERROR: opencl not found"; } &&
5894                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
5895                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
5896                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
5897 enabled opengl            && { check_lib GL/glx.h glXGetProcAddress "-lGL" ||
5898                                check_lib windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
5899                                check_lib OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
5900                                check_lib ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
5901                                die "ERROR: opengl not found."
5902                              }
5903 enabled omx_rpi && enable omx
5904 enabled omx               && { check_header OMX_Core.h ||
5905                                 { ! enabled cross_compile && enabled omx_rpi && {
5906                                     add_cflags -isystem/opt/vc/include/IL ; }
5907                                 check_header OMX_Core.h ; } ||
5908                                die "ERROR: OpenMAX IL headers not found"; }
5909 enabled openssl           && { use_pkg_config openssl openssl/ssl.h OPENSSL_init_ssl ||
5910                                use_pkg_config openssl openssl/ssl.h SSL_library_init ||
5911                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
5912                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
5913                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
5914                                die "ERROR: openssl not found"; }
5915 enabled qtkit_indev      && { check_header_objcc QTKit/QTKit.h || disable qtkit_indev; }
5916
5917 # libdc1394 check
5918 if enabled libdc1394; then
5919     { require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new &&
5920         enable libdc1394_2; } ||
5921     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
5922         enable libdc1394_1; } ||
5923     die "ERROR: No version of libdc1394 found "
5924 fi
5925
5926 if enabled gcrypt; then
5927     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
5928     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
5929         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
5930         gcrypt_libs=$("${GCRYPT_CONFIG}" --libs)
5931         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_libs ||
5932             die "ERROR: gcrypt not found"
5933         add_cflags $gcrypt_cflags && add_extralibs $gcrypt_libs
5934     else
5935         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
5936     fi
5937 fi
5938
5939 disabled sdl && disable sdl2
5940 if ! disabled sdl2; then
5941     SDL2_CONFIG="${cross_prefix}sdl2-config"
5942     if check_pkg_config sdl2 SDL_events.h SDL_PollEvent; then
5943         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
5944         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
5945         check_func SDL_Init $sdl2_libs $sdl2_cflags && enable sdl2
5946     else
5947       if "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
5948         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
5949         sdl2_libs=$("${SDL2_CONFIG}" --libs)
5950         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
5951         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
5952         check_func SDL_Init $sdl2_libs $sdl2_cflags && enable sdl2
5953       fi
5954     fi
5955     if test $target_os = "mingw32"; then
5956         sdl2_libs="$sdl2_libs -mconsole"
5957     fi
5958 fi
5959 enabled sdl2 && enable sdl && add_cflags $sdl2_cflags && add_extralibs $sdl2_libs
5960
5961 disabled securetransport || { check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5962     check_lib "Security/SecureTransport.h Security/Security.h" "SSLCreateContext SecItemImport" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5963     enable securetransport; }
5964
5965 disabled schannel || { check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
5966                        check_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" && enable schannel && add_extralibs -lsecur32; }
5967
5968 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
5969 enabled makeinfo \
5970     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
5971     && enable makeinfo_html || disable makeinfo_html
5972 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
5973 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
5974 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
5975 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
5976
5977 check_header linux/fb.h
5978 check_header linux/videodev.h
5979 check_header linux/videodev2.h
5980 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5981
5982 check_header sys/videoio.h
5983 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5984
5985 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
5986 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
5987 # w32api 3.12 had it defined wrong
5988 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
5989
5990 check_type "dshow.h" IBaseFilter
5991
5992 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
5993 { check_header dev/bktr/ioctl_meteor.h &&
5994   check_header dev/bktr/ioctl_bt848.h; } ||
5995 { check_header machine/ioctl_meteor.h &&
5996   check_header machine/ioctl_bt848.h; } ||
5997 { check_header dev/video/meteor/ioctl_meteor.h &&
5998   check_header dev/video/bktr/ioctl_bt848.h; } ||
5999 check_header dev/ic/bt8xx.h
6000
6001 check_header sndio.h
6002 if check_struct sys/soundcard.h audio_buf_info bytes; then
6003     enable_safe sys/soundcard.h
6004 else
6005     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
6006     #include <sys/soundcard.h>
6007     audio_buf_info abc;
6008 EOF
6009 fi
6010 check_header soundcard.h
6011
6012 enabled_any alsa_indev alsa_outdev &&
6013     check_lib alsa/asoundlib.h snd_pcm_htimestamp -lasound
6014
6015 enabled jack_indev && check_lib jack/jack.h jack_client_open -ljack &&
6016     check_func jack_port_get_latency_range -ljack
6017
6018 enabled_any sndio_indev sndio_outdev && check_lib sndio.h sio_open -lsndio
6019
6020 if enabled libcdio; then
6021     check_lib "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6022     check_lib "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6023     die "ERROR: No usable libcdio/cdparanoia found"
6024 fi
6025
6026 enabled xlib &&
6027     check_lib X11/Xlib.h XOpenDisplay -lX11 || disable xlib
6028
6029 if ! disabled libxcb; then
6030     check_pkg_config "xcb >= 1.4" xcb/xcb.h xcb_connect || {
6031         enabled libxcb && die "ERROR: libxcb >= 1.4 not found";
6032     } && enable libxcb
6033
6034 if enabled libxcb; then
6035     disabled libxcb_shm || {
6036         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
6037             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
6038         } && check_header sys/shm.h && enable libxcb_shm; }
6039
6040     disabled libxcb_xfixes || {
6041         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
6042             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
6043         } && enable libxcb_xfixes; }
6044
6045     disabled libxcb_shape || {
6046         check_pkg_config xcb-shape xcb/shape.h xcb_shape_get_rectangles || {
6047             enabled libxcb_shape && die "ERROR: libxcb_shape not found";
6048         } && enable libxcb_shape; }
6049
6050     add_cflags $xcb_cflags $xcb_shm_cflags $xcb_xfixes_cflags $xcb_shape_cflags
6051     add_extralibs $xcb_libs $xcb_shm_libs $xcb_xfixes_libs $xcb_shape_libs
6052 fi
6053 fi
6054
6055 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6056
6057 enabled dxva2api_h &&
6058     check_cc <<EOF && enable dxva2api_cobj
6059 #define _WIN32_WINNT 0x0600
6060 #define COBJMACROS
6061 #include <windows.h>
6062 #include <d3d9.h>
6063 #include <dxva2api.h>
6064 int main(void) { IDirectXVideoDecoder *o = NULL; IDirectXVideoDecoder_Release(o); return 0; }
6065 EOF
6066
6067 enabled vaapi &&
6068     check_lib va/va.h vaInitialize -lva ||
6069     disable vaapi
6070
6071 enabled vaapi &&
6072     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
6073     disable vaapi
6074
6075 if enabled vaapi ; then
6076     enabled xlib &&
6077     check_lib "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 &&
6078     enable vaapi_x11
6079
6080     check_lib "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm &&
6081     enable vaapi_drm
6082 fi
6083
6084 enabled vdpau &&
6085     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
6086     disable vdpau
6087
6088 enabled vdpau && enabled xlib &&
6089     check_lib "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
6090     enable vdpau_x11
6091
6092 if enabled x86; then
6093     case $target_os in
6094         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6095             ;;
6096         *)
6097             disable cuda cuvid nvenc
6098             ;;
6099     esac
6100 else
6101     disable cuda cuvid nvenc
6102 fi
6103
6104 enabled nvenc &&
6105     check_cc -I$source_path <<EOF || disable nvenc
6106 #include "compat/nvenc/nvEncodeAPI.h"
6107 NV_ENCODE_API_FUNCTION_LIST flist;
6108 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6109 int main(void) { return 0; }
6110 EOF
6111
6112 # Funny iconv installations are not unusual, so check it after all flags have been set
6113 disabled iconv || check_func_headers iconv.h iconv || check_lib iconv.h iconv -liconv || disable iconv
6114
6115 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6116
6117 # add some useful compiler flags if supported
6118 check_cflags -Wdeclaration-after-statement
6119 check_cflags -Wall
6120 check_cflags -Wdisabled-optimization
6121 check_cflags -Wpointer-arith
6122 check_cflags -Wredundant-decls
6123 check_cflags -Wwrite-strings
6124 check_cflags -Wtype-limits
6125 check_cflags -Wundef
6126 check_cflags -Wmissing-prototypes
6127 check_cflags -Wno-pointer-to-int-cast
6128 check_cflags -Wstrict-prototypes
6129 check_cflags -Wempty-body
6130 enabled extra_warnings && check_cflags -Winline
6131 enabled extra_warnings && check_cflags -Wcast-qual
6132
6133 check_disable_warning(){
6134     warning_flag=-W${1#-Wno-}
6135     test_cflags $warning_flag && add_cflags $1
6136 }
6137
6138 check_disable_warning -Wno-parentheses
6139 check_disable_warning -Wno-switch
6140 check_disable_warning -Wno-format-zero-length
6141 check_disable_warning -Wno-pointer-sign
6142 check_disable_warning -Wno-unused-const-variable
6143
6144 # add some linker flags
6145 check_ldflags -Wl,--warn-common
6146 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6147 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
6148 enabled rpath && add_ldlibflags -Wl,-rpath,$libdir
6149 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6150
6151 # add some strip flags
6152 # -wN '..@*' is more selective than -x, but not available everywhere.
6153 check_stripflags -wN \'..@*\' || check_stripflags -x
6154
6155 enabled neon_clobber_test &&
6156     check_ldflags -Wl,--wrap,avcodec_open2              \
6157                   -Wl,--wrap,avcodec_decode_audio4      \
6158                   -Wl,--wrap,avcodec_decode_video2      \
6159                   -Wl,--wrap,avcodec_decode_subtitle2   \
6160                   -Wl,--wrap,avcodec_encode_audio2      \
6161                   -Wl,--wrap,avcodec_encode_video2      \
6162                   -Wl,--wrap,avcodec_encode_subtitle    \
6163                   -Wl,--wrap,avcodec_send_packet        \
6164                   -Wl,--wrap,avcodec_receive_packet     \
6165                   -Wl,--wrap,avcodec_send_frame         \
6166                   -Wl,--wrap,avcodec_receive_frame      \
6167                   -Wl,--wrap,swr_convert                \
6168                   -Wl,--wrap,avresample_convert ||
6169     disable neon_clobber_test
6170
6171 enabled xmm_clobber_test &&
6172     check_ldflags -Wl,--wrap,avcodec_open2              \
6173                   -Wl,--wrap,avcodec_decode_audio4      \
6174                   -Wl,--wrap,avcodec_decode_video2      \
6175                   -Wl,--wrap,avcodec_decode_subtitle2   \
6176                   -Wl,--wrap,avcodec_encode_audio2      \
6177                   -Wl,--wrap,avcodec_encode_video2      \
6178                   -Wl,--wrap,avcodec_encode_subtitle    \
6179                   -Wl,--wrap,avcodec_send_packet        \
6180                   -Wl,--wrap,avcodec_receive_packet     \
6181                   -Wl,--wrap,avcodec_send_frame         \
6182                   -Wl,--wrap,avcodec_receive_frame      \
6183                   -Wl,--wrap,swr_convert                \
6184                   -Wl,--wrap,avresample_convert         \
6185                   -Wl,--wrap,sws_scale ||
6186     disable xmm_clobber_test
6187
6188 check_ld "cc" <<EOF && enable proper_dce
6189 extern const int array[512];
6190 static inline int func(void) { return array[0]; }
6191 int main(void) { return 0; }
6192 EOF
6193
6194 if enabled proper_dce; then
6195     echo "X { local: *; };" > $TMPV
6196     if test_ldflags -Wl,${version_script},$TMPV; then
6197         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6198         check_cc <<EOF && enable symver_asm_label
6199 void ff_foo(void) __asm__ ("av_foo@VERSION");
6200 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6201 EOF
6202         check_cc <<EOF && enable symver_gnu_asm
6203 __asm__(".symver ff_foo,av_foo@VERSION");
6204 void ff_foo(void) {}
6205 EOF
6206     fi
6207 fi
6208
6209 if [ -z "$optflags" ]; then
6210     if enabled small; then
6211         optflags=$cflags_size
6212     elif enabled optimizations; then
6213         optflags=$cflags_speed
6214     else
6215         optflags=$cflags_noopt
6216     fi
6217 fi
6218
6219 check_optflags(){
6220     check_cflags "$@"
6221     enabled lto && check_ldflags "$@"
6222 }
6223
6224
6225 if enabled lto; then
6226     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6227     check_cflags  -flto
6228     check_ldflags -flto $cpuflags
6229     disable inline_asm_direct_symbol_refs
6230 fi
6231
6232 check_optflags $optflags
6233 check_optflags -fno-math-errno
6234 check_optflags -fno-signed-zeros
6235
6236 enabled ftrapv && check_cflags -ftrapv
6237
6238 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6239 int x;
6240 EOF
6241
6242
6243 if enabled icc; then
6244     # Just warnings, no remarks
6245     check_cflags -w1
6246     # -wd: Disable following warnings
6247     # 144, 167, 556: -Wno-pointer-sign
6248     # 188: enumerated type mixed with another type
6249     # 1292: attribute "foo" ignored
6250     # 1419: external declaration in primary source file
6251     # 10006: ignoring unknown option -fno-signed-zeros
6252     # 10148: ignoring unknown option -Wno-parentheses
6253     # 10156: ignoring option '-W'; no argument required
6254     # 13200: No EMMS instruction before call to function
6255     # 13203: No EMMS instruction before return from function
6256     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6257     # 11030: Warning unknown option --as-needed
6258     # 10156: ignoring option '-export'; no argument required
6259     check_ldflags -wd10156,11030
6260     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6261     enable ebp_available
6262     # The test above does not test linking
6263     enabled lto && disable symver_asm_label
6264     if enabled x86_32; then
6265         icc_version=$($cc -dumpversion)
6266         test ${icc_version%%.*} -ge 11 &&
6267             check_cflags -falign-stack=maintain-16-byte ||
6268             disable aligned_stack
6269     fi
6270 elif enabled ccc; then
6271     # disable some annoying warnings
6272     add_cflags -msg_disable bitnotint
6273     add_cflags -msg_disable mixfuncvoid
6274     add_cflags -msg_disable nonstandcast
6275     add_cflags -msg_disable unsupieee
6276 elif enabled gcc; then
6277     check_optflags -fno-tree-vectorize
6278     check_cflags -Werror=format-security
6279     check_cflags -Werror=implicit-function-declaration
6280     check_cflags -Werror=missing-prototypes
6281     check_cflags -Werror=return-type
6282     check_cflags -Werror=vla
6283     check_cflags -Wformat
6284     check_cflags -fdiagnostics-color=auto
6285     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6286 elif enabled llvm_gcc; then
6287     check_cflags -mllvm -stack-alignment=16
6288 elif enabled clang; then
6289     check_cflags -mllvm -stack-alignment=16
6290     check_cflags -mstack-alignment=16
6291     check_cflags -Qunused-arguments
6292     check_cflags -Werror=implicit-function-declaration
6293     check_cflags -Werror=missing-prototypes
6294     check_cflags -Werror=return-type
6295 elif enabled cparser; then
6296     add_cflags -Wno-missing-variable-declarations
6297     add_cflags -Wno-empty-statement
6298 elif enabled armcc; then
6299     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6300     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6301     # 2523: use of inline assembly is deprecated
6302     add_cflags -W${armcc_opt},--diag_suppress=2523
6303     add_cflags -W${armcc_opt},--diag_suppress=1207
6304     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6305     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6306     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6307     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6308 elif enabled tms470; then
6309     add_cflags -pds=824 -pds=837
6310     disable inline_asm
6311 elif enabled pathscale; then
6312     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6313 elif enabled_any msvc icl; then
6314     enabled x86_32 && disable aligned_stack
6315     enabled_all x86_32 debug && add_cflags -Oy-
6316     enabled debug && add_ldflags -debug
6317     enable pragma_deprecated
6318     if enabled icl; then
6319         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6320         # (correctly) on icl 13.x.
6321         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6322             add_cflags -Qansi-alias
6323         # Some inline asm is not compilable in debug
6324         if enabled debug; then
6325             disable ebp_available
6326             disable ebx_available
6327         fi
6328     fi
6329     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6330     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
6331     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6332     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6333     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6334     # MSVC 2013 and newer can handle it fine.
6335     # If this declspec fails, force including stdlib.h before the restrict redefinition
6336     # happens in config.h.
6337     if [ $_restrict != restrict ]; then
6338         check_cc <<EOF || add_cflags -FIstdlib.h
6339 __declspec($_restrict) void* foo(int);
6340 EOF
6341     fi
6342     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6343     # Issue has been fixed in MSVC v19.00.24218.
6344     check_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6345         check_cflags -d2SSAOptimizer-
6346     # enable utf-8 source processing on VS2015 U2 and newer
6347     check_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6348         add_cflags -utf-8
6349 fi
6350
6351 for pfx in "" host_; do
6352     varname=${pfx%_}cc_type
6353     eval "type=\$$varname"
6354     if [ $type = "msvc" ]; then
6355         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6356 static inline int foo(int a) { return a; }
6357 EOF
6358     fi
6359 done
6360
6361 case $as_type in
6362     clang)
6363         add_asflags -Qunused-arguments
6364     ;;
6365 esac
6366
6367 case $ld_type in
6368     clang)
6369         check_ldflags -Qunused-arguments
6370     ;;
6371 esac
6372
6373 case $target_os in
6374     osf1)
6375         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
6376     ;;
6377     plan9)
6378         add_cppflags -Dmain=plan9_main
6379     ;;
6380 esac
6381
6382 enable frame_thread_encoder
6383
6384 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6385
6386 check_deps $CONFIG_LIST       \
6387            $CONFIG_EXTRA      \
6388            $HAVE_LIST         \
6389            $ALL_COMPONENTS    \
6390
6391 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"
6392
6393
6394 if test $target_os = "haiku"; then
6395     disable memalign
6396     disable posix_memalign
6397 fi
6398
6399 enabled_all dxva2 dxva2api_cobj CoTaskMemFree &&
6400     prepend ffmpeg_libs $($ldflags_filter "-lole32") &&
6401     enable dxva2_lib
6402
6403 # add_dep lib dep
6404 # -> enable ${lib}_deps_${dep}
6405 # -> add $dep to ${lib}_deps only once
6406 add_dep() {
6407     lib=$1
6408     dep=$2
6409     enabled "${lib}_deps_${dep}" && return 0
6410     enable  "${lib}_deps_${dep}"
6411     prepend "${lib}_deps" $dep
6412 }
6413
6414 # merge deps lib components
6415 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
6416 merge_deps() {
6417     lib=$1
6418     shift
6419     for comp in $*; do
6420         enabled $comp || continue
6421         eval "dep=\"\$${comp}_deps\""
6422         for d in $dep; do
6423             add_dep $lib $d
6424         done
6425     done
6426 }
6427
6428 merge_deps libavfilter $FILTER_LIST
6429
6430 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6431
6432 for thread in $THREADS_LIST; do
6433     if enabled $thread; then
6434         test -n "$thread_type" &&
6435             die "ERROR: Only one thread type must be selected." ||
6436             thread_type="$thread"
6437     fi
6438 done
6439
6440 if disabled stdatomic_h; then
6441     if enabled atomics_gcc; then
6442         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6443     elif enabled atomics_win32; then
6444         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6445     elif enabled atomics_suncc; then
6446         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6447     elif enabled pthreads; then
6448         add_compat atomics/pthread/stdatomic.o
6449         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6450     else
6451         enabled threads && die "Threading is enabled, but no atomics are available"
6452         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6453     fi
6454 fi
6455
6456 # Check if requested libraries were found.
6457 for lib in $AUTODETECT_LIBS; do
6458     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6459 done
6460
6461 enabled zlib && add_cppflags -DZLIB_CONST
6462
6463 # conditional library dependencies, in linking order
6464 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6465 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6466 enabled aresample_filter    && prepend avfilter_deps "swresample"
6467 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6468 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6469 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6470 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6471 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6472 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6473 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6474 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6475 enabled pan_filter          && prepend avfilter_deps "swresample"
6476 enabled pp_filter           && prepend avfilter_deps "postproc"
6477 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6478 enabled resample_filter && prepend avfilter_deps "avresample"
6479 enabled sab_filter          && prepend avfilter_deps "swscale"
6480 enabled scale_filter    && prepend avfilter_deps "swscale"
6481 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6482 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6483 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6484 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6485 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6486 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6487 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6488 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6489 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6490
6491 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6492
6493 enabled opus_decoder    && prepend avcodec_deps "swresample"
6494
6495 expand_deps(){
6496     lib_deps=${1}_deps
6497     eval "deps=\$$lib_deps"
6498     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6499     unique $lib_deps
6500 }
6501
6502 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6503 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6504
6505 map 'expand_deps $v' $LIBRARY_LIST
6506
6507 echo "install prefix            $prefix"
6508 echo "source path               $source_path"
6509 echo "C compiler                $cc"
6510 echo "C library                 $libc_type"
6511 if test "$host_cc" != "$cc"; then
6512     echo "host C compiler           $host_cc"
6513     echo "host C library            $host_libc_type"
6514 fi
6515 echo "ARCH                      $arch ($cpu)"
6516 if test "$build_suffix" != ""; then
6517     echo "build suffix              $build_suffix"
6518 fi
6519 if test "$progs_suffix" != ""; then
6520     echo "progs suffix              $progs_suffix"
6521 fi
6522 if test "$extra_version" != ""; then
6523     echo "version string suffix     $extra_version"
6524 fi
6525 echo "big-endian                ${bigendian-no}"
6526 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6527 if enabled x86; then
6528     echo "${yasmexe}                      ${yasm-no}"
6529     echo "MMX enabled               ${mmx-no}"
6530     echo "MMXEXT enabled            ${mmxext-no}"
6531     echo "3DNow! enabled            ${amd3dnow-no}"
6532     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6533     echo "SSE enabled               ${sse-no}"
6534     echo "SSSE3 enabled             ${ssse3-no}"
6535     echo "AESNI enabled             ${aesni-no}"
6536     echo "AVX enabled               ${avx-no}"
6537     echo "XOP enabled               ${xop-no}"
6538     echo "FMA3 enabled              ${fma3-no}"
6539     echo "FMA4 enabled              ${fma4-no}"
6540     echo "i686 features enabled     ${i686-no}"
6541     echo "CMOV is fast              ${fast_cmov-no}"
6542     echo "EBX available             ${ebx_available-no}"
6543     echo "EBP available             ${ebp_available-no}"
6544 fi
6545 if enabled aarch64; then
6546     echo "NEON enabled              ${neon-no}"
6547     echo "VFP enabled               ${vfp-no}"
6548 fi
6549 if enabled arm; then
6550     echo "ARMv5TE enabled           ${armv5te-no}"
6551     echo "ARMv6 enabled             ${armv6-no}"
6552     echo "ARMv6T2 enabled           ${armv6t2-no}"
6553     echo "VFP enabled               ${vfp-no}"
6554     echo "NEON enabled              ${neon-no}"
6555     echo "THUMB enabled             ${thumb-no}"
6556 fi
6557 if enabled mips; then
6558     echo "MIPS FPU enabled          ${mipsfpu-no}"
6559     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6560     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6561     echo "MIPS MSA enabled          ${msa-no}"
6562     echo "LOONGSON MMI enabled      ${mmi-no}"
6563 fi
6564 if enabled ppc; then
6565     echo "AltiVec enabled           ${altivec-no}"
6566     echo "VSX enabled               ${vsx-no}"
6567     echo "POWER8 enabled            ${power8-no}"
6568     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6569     echo "dcbzl available           ${dcbzl-no}"
6570 fi
6571 echo "debug symbols             ${debug-no}"
6572 echo "strip symbols             ${stripping-no}"
6573 echo "optimize for size         ${small-no}"
6574 echo "optimizations             ${optimizations-no}"
6575 echo "static                    ${static-no}"
6576 echo "shared                    ${shared-no}"
6577 echo "postprocessing support    ${postproc-no}"
6578 echo "new filter support        ${avfilter-no}"
6579 echo "network support           ${network-no}"
6580 echo "threading support         ${thread_type-no}"
6581 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6582 echo "SDL2 support              ${sdl2-no}"
6583 echo "opencl enabled            ${opencl-no}"
6584 echo "JNI support               ${jni-no}"
6585 echo "texi2html enabled         ${texi2html-no}"
6586 echo "perl enabled              ${perl-no}"
6587 echo "pod2man enabled           ${pod2man-no}"
6588 echo "makeinfo enabled          ${makeinfo-no}"
6589 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6590 test -n "$random_seed" &&
6591     echo "random seed               ${random_seed}"
6592 echo
6593
6594 echo "Enabled programs:"
6595 print_enabled '' $PROGRAM_LIST | print_in_columns
6596 echo
6597
6598 echo "External libraries:"
6599 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_in_columns
6600 echo
6601
6602 echo "External libraries providing hardware acceleration:"
6603 print_enabled '' $HWACCEL_LIBRARY_LIST | print_in_columns
6604 echo
6605
6606 echo "Libraries:"
6607 print_enabled '' $LIBRARY_LIST | print_in_columns
6608 echo
6609
6610 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6611     echo "Enabled ${type}s:"
6612     eval list=\$$(toupper $type)_LIST
6613     print_enabled '_*' $list | print_in_columns
6614     echo
6615 done
6616
6617 license="LGPL version 2.1 or later"
6618 if enabled nonfree; then
6619     license="nonfree and unredistributable"
6620 elif enabled gplv3; then
6621     license="GPL version 3 or later"
6622 elif enabled lgplv3; then
6623     license="LGPL version 3 or later"
6624 elif enabled gpl; then
6625     license="GPL version 2 or later"
6626 fi
6627
6628 echo "License: $license"
6629
6630 echo "Creating config.mak, config.h, and doc/config.texi..."
6631
6632 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6633
6634 enabled stripping || strip="echo skipping strip"
6635
6636 config_files="$TMPH config.mak doc/config.texi"
6637
6638 cat > config.mak <<EOF
6639 # Automatically generated by configure - do not modify!
6640 ifndef FFMPEG_CONFIG_MAK
6641 FFMPEG_CONFIG_MAK=1
6642 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6643 prefix=$prefix
6644 LIBDIR=\$(DESTDIR)$libdir
6645 SHLIBDIR=\$(DESTDIR)$shlibdir
6646 INCDIR=\$(DESTDIR)$incdir
6647 BINDIR=\$(DESTDIR)$bindir
6648 DATADIR=\$(DESTDIR)$datadir
6649 DOCDIR=\$(DESTDIR)$docdir
6650 MANDIR=\$(DESTDIR)$mandir
6651 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6652 INSTALL_NAME_DIR=$install_name_dir
6653 SRC_PATH=$source_path
6654 SRC_LINK=$source_link
6655 ifndef MAIN_MAKEFILE
6656 SRC_PATH:=\$(SRC_PATH:.%=..%)
6657 endif
6658 CC_IDENT=$cc_ident
6659 ARCH=$arch
6660 INTRINSICS=$intrinsics
6661 CC=$cc
6662 CXX=$cxx
6663 AS=$as
6664 OBJCC=$objcc
6665 LD=$ld
6666 DEPCC=$dep_cc
6667 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6668 DEPAS=$as
6669 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6670 YASM=$yasmexe
6671 DEPYASM=$yasmexe
6672 AR=$ar
6673 ARFLAGS=$arflags
6674 AR_O=$ar_o
6675 RANLIB=$ranlib
6676 STRIP=$strip
6677 CP=cp -p
6678 LN_S=$ln_s
6679 CPPFLAGS=$CPPFLAGS
6680 CFLAGS=$CFLAGS
6681 CXXFLAGS=$CXXFLAGS
6682 OBJCFLAGS=$OBJCFLAGS
6683 ASFLAGS=$ASFLAGS
6684 AS_C=$AS_C
6685 AS_O=$AS_O
6686 OBJCC_C=$OBJCC_C
6687 OBJCC_E=$OBJCC_E
6688 OBJCC_O=$OBJCC_O
6689 CC_C=$CC_C
6690 CC_E=$CC_E
6691 CC_O=$CC_O
6692 CXX_C=$CXX_C
6693 CXX_O=$CXX_O
6694 LD_O=$LD_O
6695 LD_LIB=$LD_LIB
6696 LD_PATH=$LD_PATH
6697 DLLTOOL=$dlltool
6698 WINDRES=$windres
6699 DEPWINDRES=$dep_cc
6700 DOXYGEN=$doxygen
6701 LDFLAGS=$LDFLAGS
6702 LDEXEFLAGS=$LDEXEFLAGS
6703 LDLIBFLAGS=$LDLIBFLAGS
6704 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
6705 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
6706 YASMFLAGS=$YASMFLAGS
6707 BUILDSUF=$build_suffix
6708 PROGSSUF=$progs_suffix
6709 FULLNAME=$FULLNAME
6710 LIBPREF=$LIBPREF
6711 LIBSUF=$LIBSUF
6712 LIBNAME=$LIBNAME
6713 SLIBPREF=$SLIBPREF
6714 SLIBSUF=$SLIBSUF
6715 EXESUF=$EXESUF
6716 EXTRA_VERSION=$extra_version
6717 CCDEP=$CCDEP
6718 CXXDEP=$CXXDEP
6719 CCDEP_FLAGS=$CCDEP_FLAGS
6720 ASDEP=$ASDEP
6721 ASDEP_FLAGS=$ASDEP_FLAGS
6722 CC_DEPFLAGS=$CC_DEPFLAGS
6723 AS_DEPFLAGS=$AS_DEPFLAGS
6724 HOSTCC=$host_cc
6725 HOSTLD=$host_ld
6726 HOSTCFLAGS=$host_cflags
6727 HOSTCPPFLAGS=$host_cppflags
6728 HOSTEXESUF=$HOSTEXESUF
6729 HOSTLDFLAGS=$host_ldflags
6730 HOSTLIBS=$host_libs
6731 DEPHOSTCC=$host_cc
6732 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
6733 HOSTCCDEP=$HOSTCCDEP
6734 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
6735 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
6736 HOSTCC_C=$HOSTCC_C
6737 HOSTCC_O=$HOSTCC_O
6738 HOSTLD_O=$HOSTLD_O
6739 TARGET_EXEC=$target_exec $target_exec_args
6740 TARGET_PATH=$target_path
6741 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
6742 CFLAGS-ffplay=${sdl2_cflags}
6743 ZLIB=$($ldflags_filter -lz)
6744 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
6745 EXTRALIBS=$extralibs
6746 COMPAT_OBJS=$compat_objs
6747 EXEOBJS=$exeobjs
6748 INSTALL=$install
6749 LIBTARGET=${LIBTARGET}
6750 SLIBNAME=${SLIBNAME}
6751 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
6752 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
6753 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
6754 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
6755 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
6756 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
6757 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
6758 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
6759 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
6760 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
6761 NOREDZONE_FLAGS=$noredzone_flags
6762 EOF
6763
6764 get_version(){
6765     lcname=lib${1}
6766     name=$(toupper $lcname)
6767     file=$source_path/$lcname/version.h
6768     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
6769     enabled raise_major && eval ${name}_VERSION_MAJOR=$((${name}_VERSION_MAJOR+100))
6770     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
6771     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
6772     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
6773     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
6774 }
6775
6776 map 'get_version $v' $LIBRARY_LIST
6777
6778 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> config.mak' $LIBRARY_LIST
6779
6780 print_program_libs(){
6781     eval "program_libs=\$${1}_libs"
6782     eval echo "LIBS-${1}=${program_libs}" >> config.mak
6783 }
6784
6785 map 'print_program_libs $v' $PROGRAM_LIST
6786
6787 cat > $TMPH <<EOF
6788 /* Automatically generated by configure - do not modify! */
6789 #ifndef FFMPEG_CONFIG_H
6790 #define FFMPEG_CONFIG_H
6791 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
6792 #define FFMPEG_LICENSE "$(c_escape $license)"
6793 #define CONFIG_THIS_YEAR 2017
6794 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
6795 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
6796 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
6797 #define av_restrict $_restrict
6798 #define EXTERN_PREFIX "${extern_prefix}"
6799 #define EXTERN_ASM ${extern_prefix}
6800 #define BUILDSUF "$build_suffix"
6801 #define SLIBSUF "$SLIBSUF"
6802 #define HAVE_MMX2 HAVE_MMXEXT
6803 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
6804 EOF
6805
6806 test -n "$assert_level" &&
6807     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
6808
6809 test -n "$malloc_prefix" &&
6810     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
6811
6812 if enabled yasm; then
6813     append config_files $TMPASM
6814     printf '' >$TMPASM
6815 fi
6816
6817 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
6818
6819
6820 mkdir -p doc
6821 mkdir -p tests
6822 mkdir -p tests/api
6823 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
6824
6825 print_config ARCH_   "$config_files" $ARCH_LIST
6826 print_config HAVE_   "$config_files" $HAVE_LIST
6827 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
6828                                      $CONFIG_EXTRA      \
6829                                      $ALL_COMPONENTS    \
6830
6831 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
6832 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
6833
6834 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
6835 cp_if_changed $TMPH config.h
6836 touch .config
6837
6838 enabled yasm && cp_if_changed $TMPASM config.asm
6839
6840 cat > $TMPH <<EOF
6841 /* Generated by ffconf */
6842 #ifndef AVUTIL_AVCONFIG_H
6843 #define AVUTIL_AVCONFIG_H
6844 EOF
6845
6846 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
6847
6848 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
6849
6850 cp_if_changed $TMPH libavutil/avconfig.h
6851
6852 # generate the lists of enabled components
6853 print_enabled_components(){
6854     file=$1
6855     struct_name=$2
6856     name=$3
6857     shift 3
6858     echo "static const $struct_name *$name[] = {" > $TMPH
6859     for c in $*; do
6860         enabled $c && printf "    &ff_%s,\n" $c >> $TMPH
6861     done
6862     echo "    NULL };" >> $TMPH
6863     cp_if_changed $TMPH $file
6864 }
6865
6866 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
6867 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
6868
6869 if test -n "$WARNINGS"; then
6870     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
6871     enabled fatal_warnings && exit 1
6872 fi
6873
6874 # build pkg-config files
6875
6876 lib_version(){
6877     eval printf "\"lib${1}${build_suffix} >= \$LIB$(toupper ${1})_VERSION, \""
6878 }
6879
6880 pkgconfig_generate(){
6881     name=$1
6882     shortname=${name#lib}${build_suffix}
6883     comment=$2
6884     version=$3
6885     libs=$4
6886     requires=$(map 'lib_version $v' $(eval echo \$${name#lib}_deps))
6887     requires=${requires%, }
6888     enabled ${name#lib} || return 0
6889     mkdir -p $name
6890     cat <<EOF > $name/$name${build_suffix}.pc
6891 prefix=$prefix
6892 exec_prefix=\${prefix}
6893 libdir=$libdir
6894 includedir=$incdir
6895
6896 Name: $name
6897 Description: $comment
6898 Version: $version
6899 Requires: $(enabled shared || echo $requires)
6900 Requires.private: $(enabled shared && echo $requires)
6901 Conflicts:
6902 Libs: -L\${libdir} $(enabled rpath && echo "-Wl,-rpath,\${libdir}") -l${shortname} $(enabled shared || echo $libs)
6903 Libs.private: $(enabled shared && echo $libs)
6904 Cflags: -I\${includedir}
6905 EOF
6906
6907 mkdir -p doc/examples/pc-uninstalled
6908 includedir=${source_path}
6909 [ "$includedir" = . ] && includedir="\${pcfiledir}/../../.."
6910     cat <<EOF > doc/examples/pc-uninstalled/${name}-uninstalled.pc
6911 prefix=
6912 exec_prefix=
6913 libdir=\${pcfiledir}/../../../$name
6914 includedir=${includedir}
6915
6916 Name: $name
6917 Description: $comment
6918 Version: $version
6919 Requires: $requires
6920 Conflicts:
6921 Libs: -L\${libdir} -Wl,-rpath,\${libdir} -l${shortname} $(enabled shared || echo $libs)
6922 Cflags: -I\${includedir}
6923 EOF
6924 }
6925
6926 pkgconfig_generate libavutil     "FFmpeg utility library"               "$LIBAVUTIL_VERSION"     "$LIBRT $LIBM"
6927 pkgconfig_generate libavcodec    "FFmpeg codec library"                 "$LIBAVCODEC_VERSION"    "$extralibs"
6928 pkgconfig_generate libavformat   "FFmpeg container format library"      "$LIBAVFORMAT_VERSION"   "$extralibs"
6929 pkgconfig_generate libavdevice   "FFmpeg device handling library"       "$LIBAVDEVICE_VERSION"   "$extralibs"
6930 pkgconfig_generate libavfilter   "FFmpeg audio/video filtering library" "$LIBAVFILTER_VERSION"   "$extralibs"
6931 pkgconfig_generate libpostproc   "FFmpeg postprocessing library"        "$LIBPOSTPROC_VERSION"   ""
6932 pkgconfig_generate libavresample "Libav audio resampling library"       "$LIBAVRESAMPLE_VERSION" "$LIBM"
6933 pkgconfig_generate libswscale    "FFmpeg image rescaling library"       "$LIBSWSCALE_VERSION"    "$LIBM"
6934 pkgconfig_generate libswresample "FFmpeg audio resampling library"      "$LIBSWRESAMPLE_VERSION" "$LIBM $LIBSOXR"