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     header="$1"
1220     func="$2"
1221     shift 2
1222     check_header $header && check_func $func "$@" && add_extralibs "$@"
1223 }
1224
1225 check_lib2(){
1226     log check_lib2 "$@"
1227     headers="$1"
1228     funcs="$2"
1229     shift 2
1230     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1231 }
1232
1233 check_lib_cpp(){
1234     log check_lib_cpp "$@"
1235     headers="$1"
1236     classes="$2"
1237     shift 2
1238     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1239 }
1240
1241 check_pkg_config(){
1242     log check_pkg_config "$@"
1243     pkgandversion="$1"
1244     pkg="${1%% *}"
1245     headers="$2"
1246     funcs="$3"
1247     shift 3
1248     check_cmd $pkg_config --exists --print-errors $pkgandversion || return
1249     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1250     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1251     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1252         set_safe "${pkg}_cflags" $pkg_cflags   &&
1253         set_safe "${pkg}_libs"   $pkg_libs
1254 }
1255
1256 check_exec(){
1257     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1258 }
1259
1260 check_exec_crash(){
1261     code=$(cat)
1262
1263     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1264     # are safe but may not be available everywhere.  Thus we use
1265     # raise(SIGTERM) instead.  The check is run in a subshell so we
1266     # can redirect the "Terminated" message from the shell.  SIGBUS
1267     # is not defined by standard C so it is used conditionally.
1268
1269     (check_exec "$@") >> $logfile 2>&1 <<EOF
1270 #include <signal.h>
1271 static void sighandler(int sig){
1272     raise(SIGTERM);
1273 }
1274 int foo(void){
1275     $code
1276 }
1277 int (*func_ptr)(void) = foo;
1278 int main(void){
1279     signal(SIGILL, sighandler);
1280     signal(SIGFPE, sighandler);
1281     signal(SIGSEGV, sighandler);
1282 #ifdef SIGBUS
1283     signal(SIGBUS, sighandler);
1284 #endif
1285     return func_ptr();
1286 }
1287 EOF
1288 }
1289
1290 check_type(){
1291     log check_type "$@"
1292     headers=$1
1293     type=$2
1294     shift 2
1295     disable_safe "$type"
1296     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1297 }
1298
1299 check_struct(){
1300     log check_struct "$@"
1301     headers=$1
1302     struct=$2
1303     member=$3
1304     shift 3
1305     disable_safe "${struct}_${member}"
1306     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1307         enable_safe "${struct}_${member}"
1308 }
1309
1310 check_builtin(){
1311     log check_builtin "$@"
1312     name=$1
1313     headers=$2
1314     builtin=$3
1315     shift 3
1316     disable "$name"
1317     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1318 }
1319
1320 check_compile_assert(){
1321     log check_compile_assert "$@"
1322     name=$1
1323     headers=$2
1324     condition=$3
1325     shift 3
1326     disable "$name"
1327     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1328 }
1329
1330 require(){
1331     name="$1"
1332     header="$2"
1333     func="$3"
1334     shift 3
1335     check_lib $header $func "$@" || die "ERROR: $name not found"
1336 }
1337
1338 require2(){
1339     name="$1"
1340     headers="$2"
1341     func="$3"
1342     shift 3
1343     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1344 }
1345
1346 require_cpp(){
1347     name="$1"
1348     headers="$2"
1349     classes="$3"
1350     shift 3
1351     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1352 }
1353
1354 use_pkg_config(){
1355     pkg="$1"
1356     check_pkg_config "$@" || return 1
1357     add_cflags    $(get_safe "${pkg}_cflags")
1358     add_extralibs $(get_safe "${pkg}_libs")
1359 }
1360
1361 require_pkg_config(){
1362     use_pkg_config "$@" || die "ERROR: $pkg not found using pkg-config$pkg_config_fail_message"
1363 }
1364
1365 require_libfreetype(){
1366     log require_libfreetype "$@"
1367     pkg="freetype2"
1368     check_cmd $pkg_config --exists --print-errors $pkg \
1369       || die "ERROR: $pkg not found"
1370     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1371     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1372     {
1373         echo "#include <ft2build.h>"
1374         echo "#include FT_FREETYPE_H"
1375         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1376         echo "int main(void) { return 0; }"
1377     } | check_ld "cc" $pkg_cflags $pkg_libs \
1378       && set_safe "${pkg}_cflags" $pkg_cflags \
1379       && set_safe "${pkg}_libs"   $pkg_libs \
1380       || die "ERROR: $pkg not found"
1381     add_cflags    $(get_safe "${pkg}_cflags")
1382     add_extralibs $(get_safe "${pkg}_libs")
1383 }
1384
1385 hostcc_e(){
1386     eval printf '%s\\n' $HOSTCC_E
1387 }
1388
1389 hostcc_o(){
1390     eval printf '%s\\n' $HOSTCC_O
1391 }
1392
1393 check_host_cc(){
1394     log check_host_cc "$@"
1395     cat > $TMPC
1396     log_file $TMPC
1397     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1398 }
1399
1400 check_host_cpp(){
1401     log check_host_cpp "$@"
1402     cat > $TMPC
1403     log_file $TMPC
1404     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1405 }
1406
1407 check_host_cppflags(){
1408     log check_host_cppflags "$@"
1409     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1410 int x;
1411 EOF
1412 }
1413
1414 check_host_cflags(){
1415     log check_host_cflags "$@"
1416     set -- $($host_cflags_filter "$@")
1417     check_host_cc "$@" <<EOF && append host_cflags "$@"
1418 int x;
1419 EOF
1420 }
1421
1422 check_host_cpp_condition(){
1423     log check_host_cpp_condition "$@"
1424     header=$1
1425     condition=$2
1426     shift 2
1427     check_host_cpp "$@" <<EOF
1428 #include <$header>
1429 #if !($condition)
1430 #error "unsatisfied condition: $condition"
1431 #endif
1432 EOF
1433 }
1434
1435 cp_if_changed(){
1436     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1437     mkdir -p "$(dirname $2)"
1438     $cp_f "$1" "$2"
1439 }
1440
1441 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1442 # system-dependent things.
1443
1444 AVCODEC_COMPONENTS="
1445     bsfs
1446     decoders
1447     encoders
1448     hwaccels
1449     parsers
1450 "
1451
1452 AVDEVICE_COMPONENTS="
1453     indevs
1454     outdevs
1455 "
1456 AVFILTER_COMPONENTS="
1457     filters
1458 "
1459 AVFORMAT_COMPONENTS="
1460     demuxers
1461     muxers
1462     protocols
1463 "
1464
1465 AVRESAMPLE_COMPONENTS=""
1466 AVUTIL_COMPONENTS=""
1467
1468 COMPONENT_LIST="
1469     $AVCODEC_COMPONENTS
1470     $AVDEVICE_COMPONENTS
1471     $AVFILTER_COMPONENTS
1472     $AVFORMAT_COMPONENTS
1473     $AVRESAMPLE_COMPONENTS
1474     $AVUTIL_COMPONENTS
1475 "
1476
1477 EXAMPLE_LIST="
1478     avio_dir_cmd_example
1479     avio_reading_example
1480     decoding_encoding_example
1481     demuxing_decoding_example
1482     extract_mvs_example
1483     filter_audio_example
1484     filtering_audio_example
1485     filtering_video_example
1486     http_multiclient_example
1487     metadata_example
1488     muxing_example
1489     qsvdec_example
1490     remuxing_example
1491     resampling_audio_example
1492     scaling_video_example
1493     transcode_aac_example
1494     transcoding_example
1495 "
1496 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1497     bzlib
1498     iconv
1499     libxcb
1500     libxcb_shm
1501     libxcb_shape
1502     libxcb_xfixes
1503     lzma
1504     schannel
1505     sdl
1506     sdl2
1507     securetransport
1508     xlib
1509     zlib
1510 "
1511
1512 EXTERNAL_LIBRARY_GPL_LIST="
1513     frei0r
1514     libcdio
1515     librubberband
1516     libvidstab
1517     libx264
1518     libx265
1519     libxavs
1520     libxvid
1521 "
1522
1523 EXTERNAL_LIBRARY_NONFREE_LIST="
1524     libfdk_aac
1525     openssl
1526 "
1527
1528 EXTERNAL_LIBRARY_VERSION3_LIST="
1529     gmp
1530     libopencore_amrnb
1531     libopencore_amrwb
1532     libvo_amrwbenc
1533 "
1534
1535 EXTERNAL_LIBRARY_GPLV3_LIST="
1536     libsmbclient
1537 "
1538
1539 EXTERNAL_LIBRARY_LIST="
1540     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1541     $EXTERNAL_LIBRARY_GPL_LIST
1542     $EXTERNAL_LIBRARY_NONFREE_LIST
1543     $EXTERNAL_LIBRARY_VERSION3_LIST
1544     $EXTERNAL_LIBRARY_GPLV3_LIST
1545     avisynth
1546     chromaprint
1547     crystalhd
1548     decklink
1549     gcrypt
1550     gnutls
1551     jni
1552     ladspa
1553     libass
1554     libbluray
1555     libbs2b
1556     libcaca
1557     libcelt
1558     libdc1394
1559     libflite
1560     libfontconfig
1561     libfreetype
1562     libfribidi
1563     libgme
1564     libgsm
1565     libiec61883
1566     libilbc
1567     libkvazaar
1568     libmodplug
1569     libmp3lame
1570     libnut
1571     libopencv
1572     libopenh264
1573     libopenjpeg
1574     libopenmpt
1575     libopus
1576     libpulse
1577     librtmp
1578     libschroedinger
1579     libshine
1580     libsmbclient
1581     libsnappy
1582     libsoxr
1583     libspeex
1584     libssh
1585     libtesseract
1586     libtheora
1587     libtwolame
1588     libv4l2
1589     libvorbis
1590     libvpx
1591     libwavpack
1592     libwebp
1593     libzimg
1594     libzmq
1595     libzvbi
1596     mediacodec
1597     netcdf
1598     openal
1599     opencl
1600     opengl
1601     videotoolbox
1602 "
1603 HWACCEL_AUTODETECT_LIBRARY_LIST="
1604     audiotoolbox
1605     cuda
1606     cuvid
1607     d3d11va
1608     dxva2
1609     nvenc
1610     vaapi
1611     vda
1612     vdpau
1613     videotoolbox_hwaccel
1614     xvmc
1615 "
1616
1617 HWACCEL_LIBRARY_NONFREE_LIST="
1618     libnpp
1619 "
1620
1621 HWACCEL_LIBRARY_LIST="
1622     $HWACCEL_AUTODETECT_LIBRARY_LIST
1623     $HWACCEL_LIBRARY_NONFREE_LIST
1624     libmfx
1625     mmal
1626     omx
1627 "
1628
1629 DOCUMENT_LIST="
1630     doc
1631     htmlpages
1632     manpages
1633     podpages
1634     txtpages
1635 "
1636
1637 FEATURE_LIST="
1638     ftrapv
1639     gray
1640     hardcoded_tables
1641     omx_rpi
1642     runtime_cpudetect
1643     safe_bitstream_reader
1644     shared
1645     small
1646     static
1647     swscale_alpha
1648 "
1649
1650 LIBRARY_LIST="
1651     avcodec
1652     avdevice
1653     avfilter
1654     avformat
1655     avresample
1656     avutil
1657     postproc
1658     swresample
1659     swscale
1660 "
1661
1662 LICENSE_LIST="
1663     gpl
1664     nonfree
1665     version3
1666 "
1667
1668 PROGRAM_LIST="
1669     ffplay
1670     ffprobe
1671     ffserver
1672     ffmpeg
1673 "
1674
1675 SUBSYSTEM_LIST="
1676     dct
1677     dwt
1678     error_resilience
1679     faan
1680     fast_unaligned
1681     fft
1682     lsp
1683     lzo
1684     mdct
1685     pixelutils
1686     network
1687     rdft
1688 "
1689
1690 CONFIG_LIST="
1691     $COMPONENT_LIST
1692     $DOCUMENT_LIST
1693     $EXAMPLE_LIST
1694     $EXTERNAL_LIBRARY_LIST
1695     $HWACCEL_LIBRARY_LIST
1696     $FEATURE_LIST
1697     $LICENSE_LIST
1698     $LIBRARY_LIST
1699     $PROGRAM_LIST
1700     $SUBSYSTEM_LIST
1701     fontconfig
1702     memory_poisoning
1703     neon_clobber_test
1704     pic
1705     pod2man
1706     raise_major
1707     thumb
1708     valgrind_backtrace
1709     xmm_clobber_test
1710 "
1711
1712 THREADS_LIST="
1713     pthreads
1714     os2threads
1715     w32threads
1716 "
1717
1718 ATOMICS_LIST="
1719     atomics_gcc
1720     atomics_suncc
1721     atomics_win32
1722 "
1723
1724 AUTODETECT_LIBS="
1725     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1726     $HWACCEL_AUTODETECT_LIBRARY_LIST
1727     $THREADS_LIST
1728 "
1729
1730 ARCH_LIST="
1731     aarch64
1732     alpha
1733     arm
1734     avr32
1735     avr32_ap
1736     avr32_uc
1737     bfin
1738     ia64
1739     m68k
1740     mips
1741     mips64
1742     parisc
1743     ppc
1744     ppc64
1745     s390
1746     sh4
1747     sparc
1748     sparc64
1749     tilegx
1750     tilepro
1751     tomi
1752     x86
1753     x86_32
1754     x86_64
1755 "
1756
1757 ARCH_EXT_LIST_ARM="
1758     armv5te
1759     armv6
1760     armv6t2
1761     armv8
1762     neon
1763     vfp
1764     vfpv3
1765     setend
1766 "
1767
1768 ARCH_EXT_LIST_MIPS="
1769     mipsfpu
1770     mips32r2
1771     mips32r5
1772     mips64r2
1773     mips32r6
1774     mips64r6
1775     mipsdsp
1776     mipsdspr2
1777     msa
1778 "
1779
1780 ARCH_EXT_LIST_LOONGSON="
1781     loongson2
1782     loongson3
1783     mmi
1784 "
1785
1786 ARCH_EXT_LIST_X86_SIMD="
1787     aesni
1788     amd3dnow
1789     amd3dnowext
1790     avx
1791     avx2
1792     fma3
1793     fma4
1794     mmx
1795     mmxext
1796     sse
1797     sse2
1798     sse3
1799     sse4
1800     sse42
1801     ssse3
1802     xop
1803 "
1804
1805 ARCH_EXT_LIST_PPC="
1806     altivec
1807     dcbzl
1808     ldbrx
1809     power8
1810     ppc4xx
1811     vsx
1812 "
1813
1814 ARCH_EXT_LIST_X86="
1815     $ARCH_EXT_LIST_X86_SIMD
1816     cpunop
1817     i686
1818 "
1819
1820 ARCH_EXT_LIST="
1821     $ARCH_EXT_LIST_ARM
1822     $ARCH_EXT_LIST_PPC
1823     $ARCH_EXT_LIST_X86
1824     $ARCH_EXT_LIST_MIPS
1825     $ARCH_EXT_LIST_LOONGSON
1826 "
1827
1828 ARCH_FEATURES="
1829     aligned_stack
1830     fast_64bit
1831     fast_clz
1832     fast_cmov
1833     local_aligned_8
1834     local_aligned_16
1835     local_aligned_32
1836     simd_align_16
1837     simd_align_32
1838 "
1839
1840 BUILTIN_LIST="
1841     atomic_cas_ptr
1842     machine_rw_barrier
1843     MemoryBarrier
1844     mm_empty
1845     rdtsc
1846     sarestart
1847     sem_timedwait
1848     sync_val_compare_and_swap
1849 "
1850 HAVE_LIST_CMDLINE="
1851     inline_asm
1852     symver
1853     yasm
1854 "
1855
1856 HAVE_LIST_PUB="
1857     bigendian
1858     fast_unaligned
1859 "
1860
1861 HEADERS_LIST="
1862     alsa_asoundlib_h
1863     altivec_h
1864     arpa_inet_h
1865     asm_types_h
1866     cdio_paranoia_h
1867     cdio_paranoia_paranoia_h
1868     cuda_h
1869     dispatch_dispatch_h
1870     dev_bktr_ioctl_bt848_h
1871     dev_bktr_ioctl_meteor_h
1872     dev_ic_bt8xx_h
1873     dev_video_bktr_ioctl_bt848_h
1874     dev_video_meteor_ioctl_meteor_h
1875     direct_h
1876     dirent_h
1877     dlfcn_h
1878     d3d11_h
1879     dxva_h
1880     ES2_gl_h
1881     gsm_h
1882     io_h
1883     mach_mach_time_h
1884     machine_ioctl_bt848_h
1885     machine_ioctl_meteor_h
1886     malloc_h
1887     opencv2_core_core_c_h
1888     openjpeg_2_1_openjpeg_h
1889     openjpeg_2_0_openjpeg_h
1890     openjpeg_1_5_openjpeg_h
1891     OpenGL_gl3_h
1892     poll_h
1893     sndio_h
1894     soundcard_h
1895     stdatomic_h
1896     sys_mman_h
1897     sys_param_h
1898     sys_resource_h
1899     sys_select_h
1900     sys_soundcard_h
1901     sys_time_h
1902     sys_un_h
1903     sys_videoio_h
1904     termios_h
1905     udplite_h
1906     unistd_h
1907     valgrind_valgrind_h
1908     windows_h
1909     winsock2_h
1910 "
1911
1912 INTRINSICS_LIST="
1913     intrinsics_neon
1914 "
1915
1916 COMPLEX_FUNCS="
1917     cabs
1918     cexp
1919 "
1920
1921 MATH_FUNCS="
1922     atanf
1923     atan2f
1924     cbrt
1925     cbrtf
1926     copysign
1927     cosf
1928     erf
1929     exp2
1930     exp2f
1931     expf
1932     hypot
1933     isfinite
1934     isinf
1935     isnan
1936     ldexpf
1937     llrint
1938     llrintf
1939     log2
1940     log2f
1941     log10f
1942     lrint
1943     lrintf
1944     powf
1945     rint
1946     round
1947     roundf
1948     sinf
1949     trunc
1950     truncf
1951 "
1952
1953 SYSTEM_FUNCS="
1954     access
1955     aligned_malloc
1956     arc4random
1957     clock_gettime
1958     closesocket
1959     CommandLineToArgvW
1960     CoTaskMemFree
1961     CryptGenRandom
1962     dlopen
1963     fcntl
1964     flt_lim
1965     fork
1966     getaddrinfo
1967     gethrtime
1968     getopt
1969     GetProcessAffinityMask
1970     GetProcessMemoryInfo
1971     GetProcessTimes
1972     getrusage
1973     GetSystemTimeAsFileTime
1974     gettimeofday
1975     glob
1976     glXGetProcAddress
1977     gmtime_r
1978     inet_aton
1979     isatty
1980     jack_port_get_latency_range
1981     kbhit
1982     LoadLibrary
1983     localtime_r
1984     lstat
1985     lzo1x_999_compress
1986     mach_absolute_time
1987     MapViewOfFile
1988     memalign
1989     mkstemp
1990     mmap
1991     mprotect
1992     nanosleep
1993     PeekNamedPipe
1994     posix_memalign
1995     pthread_cancel
1996     sched_getaffinity
1997     SetConsoleTextAttribute
1998     SetConsoleCtrlHandler
1999     setmode
2000     setrlimit
2001     Sleep
2002     strerror_r
2003     sysconf
2004     sysctl
2005     usleep
2006     UTGetOSTypeFromString
2007     VirtualAlloc
2008     wglGetProcAddress
2009 "
2010
2011 TOOLCHAIN_FEATURES="
2012     as_dn_directive
2013     as_fpu_directive
2014     as_func
2015     as_object_arch
2016     asm_mod_q
2017     attribute_may_alias
2018     attribute_packed
2019     ebp_available
2020     ebx_available
2021     gnu_as
2022     gnu_windres
2023     ibm_asm
2024     inline_asm_direct_symbol_refs
2025     inline_asm_labels
2026     inline_asm_nonlocal_labels
2027     pragma_deprecated
2028     rsync_contimeout
2029     symver_asm_label
2030     symver_gnu_asm
2031     vfp_args
2032     xform_asm
2033     xmm_clobbers
2034 "
2035
2036 TYPES_LIST="
2037     CONDITION_VARIABLE_Ptr
2038     socklen_t
2039     struct_addrinfo
2040     struct_group_source_req
2041     struct_ip_mreq_source
2042     struct_ipv6_mreq
2043     struct_msghdr_msg_flags
2044     struct_pollfd
2045     struct_rusage_ru_maxrss
2046     struct_sctp_event_subscribe
2047     struct_sockaddr_in6
2048     struct_sockaddr_sa_len
2049     struct_sockaddr_storage
2050     struct_stat_st_mtim_tv_nsec
2051     struct_v4l2_frmivalenum_discrete
2052 "
2053
2054 HAVE_LIST="
2055     $ARCH_EXT_LIST
2056     $(add_suffix _external $ARCH_EXT_LIST)
2057     $(add_suffix _inline   $ARCH_EXT_LIST)
2058     $ARCH_FEATURES
2059     $ATOMICS_LIST
2060     $BUILTIN_LIST
2061     $COMPLEX_FUNCS
2062     $HAVE_LIST_CMDLINE
2063     $HAVE_LIST_PUB
2064     $HEADERS_LIST
2065     $INTRINSICS_LIST
2066     $MATH_FUNCS
2067     $SYSTEM_FUNCS
2068     $THREADS_LIST
2069     $TOOLCHAIN_FEATURES
2070     $TYPES_LIST
2071     atomics_native
2072     dos_paths
2073     dxva2_lib
2074     dxva2api_cobj
2075     libc_msvcrt
2076     libdc1394_1
2077     libdc1394_2
2078     makeinfo
2079     makeinfo_html
2080     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2081     perl
2082     pod2man
2083     sdl2
2084     section_data_rel_ro
2085     texi2html
2086     threads
2087     vaapi_drm
2088     vaapi_x11
2089     vdpau_x11
2090     winrt
2091     xlib
2092 "
2093
2094 # options emitted with CONFIG_ prefix but not available on the command line
2095 CONFIG_EXTRA="
2096     aandcttables
2097     ac3dsp
2098     audio_frame_queue
2099     audiodsp
2100     blockdsp
2101     bswapdsp
2102     cabac
2103     dirac_parse
2104     dvprofile
2105     exif
2106     faandct
2107     faanidct
2108     fdctdsp
2109     flacdsp
2110     fmtconvert
2111     frame_thread_encoder
2112     g722dsp
2113     golomb
2114     gplv3
2115     h263dsp
2116     h264chroma
2117     h264dsp
2118     h264parse
2119     h264pred
2120     h264qpel
2121     hpeldsp
2122     huffman
2123     huffyuvdsp
2124     huffyuvencdsp
2125     idctdsp
2126     iirfilter
2127     mdct15
2128     intrax8
2129     iso_media
2130     ividsp
2131     jpegtables
2132     lgplv3
2133     libx262
2134     llauddsp
2135     llviddsp
2136     llvidencdsp
2137     lpc
2138     lzf
2139     me_cmp
2140     mpeg_er
2141     mpegaudio
2142     mpegaudiodsp
2143     mpegvideo
2144     mpegvideoenc
2145     mss34dsp
2146     pixblockdsp
2147     qpeldsp
2148     qsv
2149     qsvdec
2150     qsvenc
2151     rangecoder
2152     riffdec
2153     riffenc
2154     rtpdec
2155     rtpenc_chain
2156     rv34dsp
2157     sinewin
2158     snappy
2159     srtp
2160     startcode
2161     texturedsp
2162     texturedspenc
2163     tpeldsp
2164     vaapi_encode
2165     vc1dsp
2166     videodsp
2167     vp3dsp
2168     vp56dsp
2169     vp8dsp
2170     vt_bt2020
2171     wma_freqs
2172     wmv2dsp
2173 "
2174
2175 CMDLINE_SELECT="
2176     $ARCH_EXT_LIST
2177     $CONFIG_LIST
2178     $HAVE_LIST_CMDLINE
2179     $THREADS_LIST
2180     asm
2181     cross_compile
2182     debug
2183     extra_warnings
2184     logging
2185     lto
2186     optimizations
2187     rpath
2188     stripping
2189 "
2190
2191 PATHS_LIST="
2192     bindir
2193     datadir
2194     docdir
2195     incdir
2196     libdir
2197     mandir
2198     pkgconfigdir
2199     prefix
2200     shlibdir
2201     install_name_dir
2202 "
2203
2204 CMDLINE_SET="
2205     $PATHS_LIST
2206     ar
2207     arch
2208     as
2209     assert_level
2210     build_suffix
2211     cc
2212     objcc
2213     cpu
2214     cross_prefix
2215     custom_allocator
2216     cxx
2217     dep_cc
2218     doxygen
2219     env
2220     extra_version
2221     gas
2222     host_cc
2223     host_cflags
2224     host_ld
2225     host_ldflags
2226     host_libs
2227     host_os
2228     install
2229     ld
2230     ln_s
2231     logfile
2232     malloc_prefix
2233     nm
2234     optflags
2235     pkg_config
2236     pkg_config_flags
2237     progs_suffix
2238     random_seed
2239     ranlib
2240     samples
2241     strip
2242     sws_max_filter_size
2243     sysinclude
2244     sysroot
2245     target_exec
2246     target_os
2247     target_path
2248     target_samples
2249     tempprefix
2250     toolchain
2251     valgrind
2252     yasmexe
2253 "
2254
2255 CMDLINE_APPEND="
2256     extra_cflags
2257     extra_cxxflags
2258     extra_objcflags
2259     host_cppflags
2260 "
2261
2262 # code dependency declarations
2263
2264 # architecture extensions
2265
2266 armv5te_deps="arm"
2267 armv6_deps="arm"
2268 armv6t2_deps="arm"
2269 armv8_deps="aarch64"
2270 neon_deps_any="aarch64 arm"
2271 intrinsics_neon_deps="neon"
2272 vfp_deps_any="aarch64 arm"
2273 vfpv3_deps="vfp"
2274 setend_deps="arm"
2275
2276 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2277
2278 loongson2_deps="mips"
2279 loongson3_deps="mips"
2280 mipsfpu_deps="mips"
2281 mipsdsp_deps="mips"
2282 mipsdspr2_deps="mips"
2283 mips32r2_deps="mips"
2284 mips32r5_deps="mips"
2285 mips32r6_deps="mips"
2286 mips64r2_deps="mips"
2287 mips64r6_deps="mips"
2288 msa_deps="mipsfpu"
2289 mmi_deps="mips"
2290
2291 altivec_deps="ppc"
2292 dcbzl_deps="ppc"
2293 ldbrx_deps="ppc"
2294 ppc4xx_deps="ppc"
2295 vsx_deps="altivec"
2296 power8_deps="vsx"
2297
2298 cpunop_deps="i686"
2299 x86_64_select="i686"
2300 x86_64_suggest="fast_cmov"
2301
2302 amd3dnow_deps="mmx"
2303 amd3dnowext_deps="amd3dnow"
2304 i686_deps="x86"
2305 mmx_deps="x86"
2306 mmxext_deps="mmx"
2307 sse_deps="mmxext"
2308 sse2_deps="sse"
2309 sse3_deps="sse2"
2310 ssse3_deps="sse3"
2311 sse4_deps="ssse3"
2312 sse42_deps="sse4"
2313 aesni_deps="sse42"
2314 avx_deps="sse42"
2315 xop_deps="avx"
2316 fma3_deps="avx"
2317 fma4_deps="avx"
2318 avx2_deps="avx"
2319
2320 mmx_external_deps="yasm"
2321 mmx_inline_deps="inline_asm"
2322 mmx_suggest="mmx_external mmx_inline"
2323
2324 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2325     eval dep=\$${ext}_deps
2326     eval ${ext}_external_deps='"${dep}_external"'
2327     eval ${ext}_inline_deps='"${dep}_inline"'
2328     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2329 done
2330
2331 aligned_stack_if_any="aarch64 ppc x86"
2332 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2333 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2334 fast_unaligned_if_any="aarch64 ppc x86"
2335 simd_align_16_if_any="altivec neon sse"
2336 simd_align_32_if_any="avx"
2337
2338 # system capabilities
2339 symver_if_any="symver_asm_label symver_gnu_asm"
2340 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
2341
2342 # threading support
2343 atomics_gcc_if="sync_val_compare_and_swap"
2344 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2345 atomics_win32_if="MemoryBarrier"
2346 atomics_native_if_any="$ATOMICS_LIST"
2347 w32threads_deps="atomics_native"
2348 threads_if_any="$THREADS_LIST"
2349
2350 # subsystems
2351 dct_select="rdft"
2352 dirac_parse_select="golomb"
2353 error_resilience_select="me_cmp"
2354 faandct_deps="faan fdctdsp"
2355 faanidct_deps="faan idctdsp"
2356 h264dsp_select="startcode"
2357 frame_thread_encoder_deps="encoders threads"
2358 intrax8_select="blockdsp idctdsp"
2359 mdct_select="fft"
2360 mdct15_select="fft"
2361 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2362 mpeg_er_select="error_resilience"
2363 mpegaudio_select="mpegaudiodsp"
2364 mpegaudiodsp_select="dct"
2365 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2366 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2367 vc1dsp_select="h264chroma qpeldsp startcode"
2368 rdft_select="fft"
2369
2370 # decoders / encoders
2371 aac_decoder_select="mdct15 mdct sinewin"
2372 aac_fixed_decoder_select="mdct sinewin"
2373 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2374 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2375 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2376 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2377 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2378 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2379 adpcm_g722_decoder_select="g722dsp"
2380 adpcm_g722_encoder_select="g722dsp"
2381 aic_decoder_select="golomb idctdsp"
2382 alac_encoder_select="lpc"
2383 als_decoder_select="bswapdsp"
2384 amrnb_decoder_select="lsp"
2385 amrwb_decoder_select="lsp"
2386 amv_decoder_select="sp5x_decoder exif"
2387 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2388 ape_decoder_select="bswapdsp llauddsp"
2389 apng_decoder_select="zlib"
2390 apng_encoder_select="llvidencdsp zlib"
2391 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2392 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2393 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2394 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2395 atrac1_decoder_select="mdct sinewin"
2396 atrac3_decoder_select="mdct"
2397 atrac3p_decoder_select="mdct sinewin"
2398 avrn_decoder_select="exif jpegtables"
2399 bink_decoder_select="blockdsp hpeldsp"
2400 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2401 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2402 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2403 cllc_decoder_select="bswapdsp"
2404 comfortnoise_encoder_select="lpc"
2405 cook_decoder_select="audiodsp mdct sinewin"
2406 cscd_decoder_select="lzo"
2407 cscd_decoder_suggest="zlib"
2408 dca_decoder_select="mdct"
2409 dds_decoder_select="texturedsp"
2410 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2411 dnxhd_decoder_select="blockdsp idctdsp"
2412 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2413 dvvideo_decoder_select="dvprofile idctdsp"
2414 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2415 dxa_decoder_select="zlib"
2416 dxv_decoder_select="lzf texturedsp"
2417 eac3_decoder_select="ac3_decoder"
2418 eac3_encoder_select="ac3_encoder"
2419 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2420 eatgq_decoder_select="aandcttables"
2421 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2422 exr_decoder_select="zlib"
2423 ffv1_decoder_select="golomb rangecoder"
2424 ffv1_encoder_select="rangecoder"
2425 ffvhuff_decoder_select="huffyuv_decoder"
2426 ffvhuff_encoder_select="huffyuv_encoder"
2427 fic_decoder_select="golomb"
2428 flac_decoder_select="flacdsp golomb"
2429 flac_encoder_select="bswapdsp flacdsp golomb lpc"
2430 flashsv2_decoder_select="zlib"
2431 flashsv2_encoder_select="zlib"
2432 flashsv_decoder_select="zlib"
2433 flashsv_encoder_select="zlib"
2434 flv_decoder_select="h263_decoder"
2435 flv_encoder_select="h263_encoder"
2436 fourxm_decoder_select="blockdsp bswapdsp"
2437 fraps_decoder_select="bswapdsp huffman"
2438 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2439 g729_decoder_select="audiodsp"
2440 h261_decoder_select="mpegvideo"
2441 h261_encoder_select="aandcttables mpegvideoenc"
2442 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2443 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2444 h263i_decoder_select="h263_decoder"
2445 h263p_decoder_select="h263_decoder"
2446 h263p_encoder_select="h263_encoder"
2447 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2448 h264_decoder_suggest="error_resilience"
2449 hap_decoder_select="snappy texturedsp"
2450 hap_encoder_deps="libsnappy"
2451 hap_encoder_select="texturedspenc"
2452 hevc_decoder_select="bswapdsp cabac golomb videodsp"
2453 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2454 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2455 iac_decoder_select="imc_decoder"
2456 imc_decoder_select="bswapdsp fft mdct sinewin"
2457 indeo3_decoder_select="hpeldsp"
2458 indeo4_decoder_select="ividsp"
2459 indeo5_decoder_select="ividsp"
2460 interplay_video_decoder_select="hpeldsp"
2461 jpegls_decoder_select="golomb mjpeg_decoder"
2462 jpegls_encoder_select="golomb"
2463 jv_decoder_select="blockdsp"
2464 lagarith_decoder_select="llviddsp"
2465 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2466 loco_decoder_select="golomb"
2467 magicyuv_decoder_select="llviddsp"
2468 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2469 metasound_decoder_select="lsp mdct sinewin"
2470 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2471 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2472 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2473 mjpegb_decoder_select="mjpeg_decoder"
2474 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2475 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2476 mlp_decoder_select="mlp_parser"
2477 motionpixels_decoder_select="bswapdsp"
2478 mp1_decoder_select="mpegaudio"
2479 mp1float_decoder_select="mpegaudio"
2480 mp2_decoder_select="mpegaudio"
2481 mp2float_decoder_select="mpegaudio"
2482 mp3_decoder_select="mpegaudio"
2483 mp3adu_decoder_select="mpegaudio"
2484 mp3adufloat_decoder_select="mpegaudio"
2485 mp3float_decoder_select="mpegaudio"
2486 mp3on4_decoder_select="mpegaudio"
2487 mp3on4float_decoder_select="mpegaudio"
2488 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2489 mpc8_decoder_select="mpegaudiodsp"
2490 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2491 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2492 mpegvideo_decoder_select="mpegvideo"
2493 mpeg1video_decoder_select="mpegvideo"
2494 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2495 mpeg2video_decoder_select="mpegvideo"
2496 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2497 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2498 mpeg4_encoder_select="h263_encoder"
2499 msa1_decoder_select="mss34dsp"
2500 msmpeg4v1_decoder_select="h263_decoder"
2501 msmpeg4v2_decoder_select="h263_decoder"
2502 msmpeg4v2_encoder_select="h263_encoder"
2503 msmpeg4v3_decoder_select="h263_decoder"
2504 msmpeg4v3_encoder_select="h263_encoder"
2505 mss2_decoder_select="vc1_decoder mpegvideo"
2506 mts2_decoder_select="mss34dsp"
2507 mxpeg_decoder_select="mjpeg_decoder"
2508 nellymoser_decoder_select="mdct sinewin"
2509 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2510 nuv_decoder_select="idctdsp lzo"
2511 on2avc_decoder_select="mdct"
2512 opus_decoder_deps="swresample"
2513 opus_decoder_select="mdct15"
2514 opus_encoder_select="audio_frame_queue mdct15"
2515 png_decoder_select="zlib"
2516 png_encoder_select="llvidencdsp zlib"
2517 prores_decoder_select="blockdsp idctdsp"
2518 prores_encoder_select="fdctdsp"
2519 qcelp_decoder_select="lsp"
2520 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2521 ra_144_decoder_select="audiodsp"
2522 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2523 ralf_decoder_select="golomb"
2524 rawvideo_decoder_select="bswapdsp"
2525 rscc_decoder_select="zlib"
2526 rtjpeg_decoder_select="me_cmp"
2527 rv10_decoder_select="h263_decoder"
2528 rv10_encoder_select="h263_encoder"
2529 rv20_decoder_select="h263_decoder"
2530 rv20_encoder_select="h263_encoder"
2531 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2532 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2533 screenpresso_decoder_select="zlib"
2534 shorten_decoder_select="golomb bswapdsp"
2535 sipr_decoder_select="lsp"
2536 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2537 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2538 sonic_decoder_select="golomb rangecoder"
2539 sonic_encoder_select="golomb rangecoder"
2540 sonic_ls_encoder_select="golomb rangecoder"
2541 sp5x_decoder_select="mjpeg_decoder"
2542 svq1_decoder_select="hpeldsp"
2543 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2544 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2545 svq3_decoder_suggest="zlib"
2546 tak_decoder_select="audiodsp"
2547 tdsc_decoder_select="zlib mjpeg_decoder"
2548 theora_decoder_select="vp3_decoder"
2549 thp_decoder_select="mjpeg_decoder"
2550 tiff_decoder_suggest="zlib lzma"
2551 tiff_encoder_suggest="zlib"
2552 truehd_decoder_select="mlp_parser"
2553 truemotion2_decoder_select="bswapdsp"
2554 truespeech_decoder_select="bswapdsp"
2555 tscc_decoder_select="zlib"
2556 twinvq_decoder_select="mdct lsp sinewin"
2557 txd_decoder_select="texturedsp"
2558 utvideo_decoder_select="bswapdsp llviddsp"
2559 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2560 vble_decoder_select="llviddsp"
2561 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2562 vc1_qsv_decoder_deps="libmfx"
2563 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel"
2564 vc1image_decoder_select="vc1_decoder"
2565 vorbis_decoder_select="mdct"
2566 vorbis_encoder_select="mdct"
2567 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2568 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2569 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2570 vp6a_decoder_select="vp6_decoder"
2571 vp6f_decoder_select="vp6_decoder"
2572 vp7_decoder_select="h264pred videodsp vp8dsp"
2573 vp8_decoder_select="h264pred videodsp vp8dsp"
2574 vp9_decoder_select="videodsp vp9_parser"
2575 webp_decoder_select="vp8_decoder exif"
2576 wmalossless_decoder_select="llauddsp"
2577 wmapro_decoder_select="mdct sinewin wma_freqs"
2578 wmav1_decoder_select="mdct sinewin wma_freqs"
2579 wmav1_encoder_select="mdct sinewin wma_freqs"
2580 wmav2_decoder_select="mdct sinewin wma_freqs"
2581 wmav2_encoder_select="mdct sinewin wma_freqs"
2582 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2583 wmv1_decoder_select="h263_decoder"
2584 wmv1_encoder_select="h263_encoder"
2585 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2586 wmv2_encoder_select="h263_encoder wmv2dsp"
2587 wmv3_decoder_select="vc1_decoder"
2588 wmv3image_decoder_select="wmv3_decoder"
2589 xma1_decoder_select="wmapro_decoder"
2590 xma2_decoder_select="wmapro_decoder"
2591 zerocodec_decoder_select="zlib"
2592 zlib_decoder_select="zlib"
2593 zlib_encoder_select="zlib"
2594 zmbv_decoder_select="zlib"
2595 zmbv_encoder_select="zlib"
2596
2597 # platform codecs
2598 audiotoolbox_deps="AudioToolbox_AudioToolbox_h"
2599 audiotoolbox_extralibs="-framework CoreFoundation -framework AudioToolbox -framework CoreMedia"
2600
2601 # hardware accelerators
2602 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2603 cuda_deps_any="dlopen LoadLibrary"
2604 cuvid_deps="cuda"
2605 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2606 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2607 dxva2_extralibs="-luser32"
2608 vaapi_deps="va_va_h"
2609 vda_framework_deps="VideoDecodeAcceleration_VDADecoder_h"
2610 vda_framework_extralibs="-framework VideoDecodeAcceleration"
2611 vda_deps="vda_framework pthreads"
2612 vda_extralibs="-framework CoreFoundation -framework QuartzCore"
2613 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2614 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2615 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2616 xvmc_deps="X11_extensions_XvMClib_h"
2617
2618 h263_vaapi_hwaccel_deps="vaapi"
2619 h263_vaapi_hwaccel_select="h263_decoder"
2620 h263_videotoolbox_hwaccel_deps="videotoolbox"
2621 h263_videotoolbox_hwaccel_select="h263_decoder"
2622 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2623 h264_cuvid_hwaccel_deps="cuda cuvid"
2624 h264_d3d11va_hwaccel_deps="d3d11va"
2625 h264_d3d11va_hwaccel_select="h264_decoder"
2626 h264_dxva2_hwaccel_deps="dxva2"
2627 h264_dxva2_hwaccel_select="h264_decoder"
2628 h264_mediacodec_decoder_deps="mediacodec"
2629 h264_mediacodec_hwaccel_deps="mediacodec"
2630 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2631 h264_mmal_decoder_deps="mmal"
2632 h264_mmal_decoder_select="mmal"
2633 h264_mmal_hwaccel_deps="mmal"
2634 h264_omx_encoder_deps="omx"
2635 h264_qsv_hwaccel_deps="libmfx"
2636 h264_vaapi_hwaccel_deps="vaapi"
2637 h264_vaapi_hwaccel_select="h264_decoder"
2638 h264_vda_decoder_deps="vda"
2639 h264_vda_decoder_select="h264_decoder"
2640 h264_vda_hwaccel_deps="vda"
2641 h264_vda_hwaccel_select="h264_decoder"
2642 h264_vda_old_hwaccel_deps="vda"
2643 h264_vda_old_hwaccel_select="h264_decoder"
2644 h264_vdpau_decoder_deps="vdpau"
2645 h264_vdpau_decoder_select="h264_decoder"
2646 h264_vdpau_hwaccel_deps="vdpau"
2647 h264_vdpau_hwaccel_select="h264_decoder"
2648 h264_videotoolbox_hwaccel_deps="videotoolbox"
2649 h264_videotoolbox_hwaccel_select="h264_decoder"
2650 hevc_cuvid_hwaccel_deps="cuda cuvid"
2651 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2652 hevc_d3d11va_hwaccel_select="hevc_decoder"
2653 hevc_mediacodec_decoder_deps="mediacodec"
2654 hevc_mediacodec_hwaccel_deps="mediacodec"
2655 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2656 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2657 hevc_dxva2_hwaccel_select="hevc_decoder"
2658 hevc_qsv_hwaccel_deps="libmfx"
2659 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2660 hevc_vaapi_hwaccel_select="hevc_decoder"
2661 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2662 hevc_vdpau_hwaccel_select="hevc_decoder"
2663 mjpeg_cuvid_hwaccel_deps="cuda cuvid"
2664 mpeg_vdpau_decoder_deps="vdpau"
2665 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2666 mpeg_xvmc_hwaccel_deps="xvmc"
2667 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2668 mpeg1_cuvid_hwaccel_deps="cuda cuvid"
2669 mpeg1_vdpau_decoder_deps="vdpau"
2670 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2671 mpeg1_vdpau_hwaccel_deps="vdpau"
2672 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2673 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2674 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2675 mpeg1_xvmc_hwaccel_deps="xvmc"
2676 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2677 mpeg2_crystalhd_decoder_select="crystalhd"
2678 mpeg2_cuvid_hwaccel_deps="cuda cuvid"
2679 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2680 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2681 mpeg2_dxva2_hwaccel_deps="dxva2"
2682 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2683 mpeg2_mmal_decoder_deps="mmal"
2684 mpeg2_mmal_decoder_select="mmal"
2685 mpeg2_mmal_hwaccel_deps="mmal"
2686 mpeg2_qsv_hwaccel_deps="libmfx"
2687 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2688 mpeg2_vaapi_hwaccel_deps="vaapi"
2689 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2690 mpeg2_vdpau_hwaccel_deps="vdpau"
2691 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2692 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2693 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2694 mpeg2_xvmc_hwaccel_deps="xvmc"
2695 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2696 mpeg4_crystalhd_decoder_select="crystalhd"
2697 mpeg4_cuvid_hwaccel_deps="cuda cuvid"
2698 mpeg4_mediacodec_decoder_deps="mediacodec"
2699 mpeg4_mediacodec_hwaccel_deps="mediacodec"
2700 mpeg4_mmal_decoder_deps="mmal"
2701 mpeg4_mmal_decoder_select="mmal"
2702 mpeg4_mmal_hwaccel_deps="mmal"
2703 mpeg4_omx_encoder_deps="omx"
2704 mpeg4_vaapi_hwaccel_deps="vaapi"
2705 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2706 mpeg4_vdpau_decoder_deps="vdpau"
2707 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2708 mpeg4_vdpau_hwaccel_deps="vdpau"
2709 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2710 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2711 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2712 msmpeg4_crystalhd_decoder_select="crystalhd"
2713 vc1_crystalhd_decoder_select="crystalhd"
2714 vc1_cuvid_hwaccel_deps="cuda cuvid"
2715 vc1_d3d11va_hwaccel_deps="d3d11va"
2716 vc1_d3d11va_hwaccel_select="vc1_decoder"
2717 vc1_dxva2_hwaccel_deps="dxva2"
2718 vc1_dxva2_hwaccel_select="vc1_decoder"
2719 vc1_mmal_decoder_deps="mmal"
2720 vc1_mmal_decoder_select="mmal"
2721 vc1_mmal_hwaccel_deps="mmal"
2722 vc1_qsv_hwaccel_deps="libmfx"
2723 vc1_qsv_hwaccel_select="qsvdec_vc1"
2724 vc1_vaapi_hwaccel_deps="vaapi"
2725 vc1_vaapi_hwaccel_select="vc1_decoder"
2726 vc1_vdpau_decoder_deps="vdpau"
2727 vc1_vdpau_decoder_select="vc1_decoder"
2728 vc1_vdpau_hwaccel_deps="vdpau"
2729 vc1_vdpau_hwaccel_select="vc1_decoder"
2730 vp8_cuvid_hwaccel_deps="cuda cuvid"
2731 vp9_cuvid_hwaccel_deps="cuda cuvid"
2732 vp8_mediacodec_decoder_deps="mediacodec"
2733 vp8_mediacodec_hwaccel_deps="mediacodec"
2734 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2735 vp9_d3d11va_hwaccel_select="vp9_decoder"
2736 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2737 vp9_dxva2_hwaccel_select="vp9_decoder"
2738 vp9_mediacodec_decoder_deps="mediacodec"
2739 vp9_mediacodec_hwaccel_deps="mediacodec"
2740 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2741 vp9_vaapi_hwaccel_select="vp9_decoder"
2742 wmv3_crystalhd_decoder_select="crystalhd"
2743 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2744 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2745 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2746 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2747 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2748
2749 # hardware-accelerated codecs
2750 omx_deps="dlopen pthreads"
2751 omx_extralibs='$ldl'
2752 qsvdec_select="qsv"
2753 qsvenc_select="qsv"
2754 vaapi_encode_deps="vaapi"
2755
2756 hwupload_cuda_filter_deps="cuda"
2757 scale_npp_filter_deps="cuda libnpp"
2758
2759 nvenc_deps="cuda"
2760 nvenc_deps_any="dlopen LoadLibrary"
2761 nvenc_encoder_deps="nvenc"
2762 h264_cuvid_decoder_deps="cuda cuvid"
2763 h264_cuvid_decoder_select="h264_mp4toannexb_bsf h264_cuvid_hwaccel"
2764 h264_nvenc_encoder_deps="nvenc"
2765 h264_qsv_decoder_deps="libmfx"
2766 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2767 h264_qsv_encoder_deps="libmfx"
2768 h264_qsv_encoder_select="qsvenc"
2769 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2770 h264_vaapi_encoder_select="vaapi_encode golomb"
2771
2772 hevc_cuvid_decoder_deps="cuda cuvid"
2773 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf hevc_cuvid_hwaccel"
2774 hevc_nvenc_encoder_deps="nvenc"
2775 hevc_qsv_decoder_deps="libmfx"
2776 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2777 hevc_qsv_encoder_deps="libmfx"
2778 hevc_qsv_encoder_select="qsvenc"
2779 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2780 hevc_vaapi_encoder_select="vaapi_encode golomb"
2781 mjpeg_cuvid_decoder_deps="cuda cuvid"
2782 mjpeg_cuvid_decoder_select="mjpeg_cuvid_hwaccel"
2783 mpeg1_cuvid_decoder_deps="cuda cuvid"
2784 mpeg1_cuvid_decoder_select="mpeg1_cuvid_hwaccel"
2785 mpeg2_cuvid_decoder_deps="cuda cuvid"
2786 mpeg2_cuvid_decoder_select="mpeg2_cuvid_hwaccel"
2787 mpeg2_qsv_decoder_deps="libmfx"
2788 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2789 mpeg2_qsv_encoder_deps="libmfx"
2790 mpeg2_qsv_encoder_select="qsvenc"
2791 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2792 mpeg2_vaapi_encoder_select="vaapi_encode"
2793 mpeg4_cuvid_decoder_deps="cuda cuvid"
2794 mpeg4_cuvid_decoder_select="mpeg4_cuvid_hwaccel"
2795 nvenc_h264_encoder_deps="nvenc"
2796 nvenc_hevc_encoder_deps="nvenc"
2797
2798 vc1_cuvid_decoder_deps="cuda cuvid"
2799 vc1_cuvid_decoder_select="vc1_cuvid_hwaccel"
2800 vp8_cuvid_decoder_deps="cuda cuvid"
2801 vp8_cuvid_decoder_select="vp8_cuvid_hwaccel"
2802 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2803 vp8_vaapi_encoder_select="vaapi_encode"
2804 vp9_cuvid_decoder_deps="cuda cuvid"
2805 vp9_cuvid_decoder_select="vp9_cuvid_hwaccel"
2806
2807 # parsers
2808 h264_parser_select="golomb h264dsp h264parse"
2809 hevc_parser_select="golomb"
2810 mpegvideo_parser_select="mpegvideo"
2811 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2812 vc1_parser_select="vc1dsp"
2813
2814 # bitstream_filters
2815 mjpeg2jpeg_bsf_select="jpegtables"
2816
2817 # external libraries
2818 aac_at_decoder_deps="audiotoolbox"
2819 ac3_at_decoder_deps="audiotoolbox"
2820 ac3_at_decoder_select="ac3_parser"
2821 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2822 alac_at_decoder_deps="audiotoolbox"
2823 amr_nb_at_decoder_deps="audiotoolbox"
2824 avisynth_deps_any="dlopen LoadLibrary"
2825 avisynth_demuxer_deps="avisynth"
2826 avisynth_demuxer_select="riffdec"
2827 eac3_at_decoder_deps="audiotoolbox"
2828 eac3_at_decoder_select="ac3_parser"
2829 gsm_ms_at_decoder_deps="audiotoolbox"
2830 ilbc_at_decoder_deps="audiotoolbox"
2831 mp1_at_decoder_deps="audiotoolbox"
2832 mp2_at_decoder_deps="audiotoolbox"
2833 mp3_at_decoder_deps="audiotoolbox"
2834 pcm_alaw_at_decoder_deps="audiotoolbox"
2835 pcm_mulaw_at_decoder_deps="audiotoolbox"
2836 qdmc_at_decoder_deps="audiotoolbox"
2837 qdm2_at_decoder_deps="audiotoolbox"
2838 aac_at_encoder_deps="audiotoolbox"
2839 aac_at_encoder_select="audio_frame_queue"
2840 alac_at_encoder_deps="audiotoolbox"
2841 alac_at_encoder_select="audio_frame_queue"
2842 ilbc_at_encoder_deps="audiotoolbox"
2843 ilbc_at_encoder_select="audio_frame_queue"
2844 pcm_alaw_at_encoder_deps="audiotoolbox"
2845 pcm_alaw_at_encoder_select="audio_frame_queue"
2846 pcm_mulaw_at_encoder_deps="audiotoolbox"
2847 pcm_mulaw_at_encoder_select="audio_frame_queue"
2848 chromaprint_muxer_deps="chromaprint"
2849 h264_videotoolbox_encoder_deps="videotoolbox_encoder pthreads"
2850 libcelt_decoder_deps="libcelt"
2851 libfdk_aac_decoder_deps="libfdk_aac"
2852 libfdk_aac_encoder_deps="libfdk_aac"
2853 libfdk_aac_encoder_select="audio_frame_queue"
2854 libgme_demuxer_deps="libgme"
2855 libgsm_decoder_deps="libgsm"
2856 libgsm_encoder_deps="libgsm"
2857 libgsm_ms_decoder_deps="libgsm"
2858 libgsm_ms_encoder_deps="libgsm"
2859 libilbc_decoder_deps="libilbc"
2860 libilbc_encoder_deps="libilbc"
2861 libkvazaar_encoder_deps="libkvazaar"
2862 libmodplug_demuxer_deps="libmodplug"
2863 libmp3lame_encoder_deps="libmp3lame"
2864 libmp3lame_encoder_select="audio_frame_queue"
2865 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2866 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2867 libopencore_amrnb_encoder_select="audio_frame_queue"
2868 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2869 libopenh264_decoder_deps="libopenh264"
2870 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2871 libopenh264_encoder_deps="libopenh264"
2872 libopenjpeg_decoder_deps="libopenjpeg"
2873 libopenjpeg_encoder_deps="libopenjpeg"
2874 libopenmpt_demuxer_deps="libopenmpt"
2875 libopus_decoder_deps="libopus"
2876 libopus_encoder_deps="libopus"
2877 libopus_encoder_select="audio_frame_queue"
2878 libschroedinger_decoder_deps="libschroedinger"
2879 libschroedinger_encoder_deps="libschroedinger"
2880 libshine_encoder_deps="libshine"
2881 libshine_encoder_select="audio_frame_queue"
2882 libspeex_decoder_deps="libspeex"
2883 libspeex_encoder_deps="libspeex"
2884 libspeex_encoder_select="audio_frame_queue"
2885 libtheora_encoder_deps="libtheora"
2886 libtwolame_encoder_deps="libtwolame"
2887 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2888 libvorbis_decoder_deps="libvorbis"
2889 libvorbis_encoder_deps="libvorbis"
2890 libvorbis_encoder_select="audio_frame_queue"
2891 libvpx_vp8_decoder_deps="libvpx"
2892 libvpx_vp8_encoder_deps="libvpx"
2893 libvpx_vp9_decoder_deps="libvpx"
2894 libvpx_vp9_encoder_deps="libvpx"
2895 libwavpack_encoder_deps="libwavpack"
2896 libwebp_encoder_deps="libwebp"
2897 libwebp_anim_encoder_deps="libwebp"
2898 libx262_encoder_deps="libx262"
2899 libx264_encoder_deps="libx264"
2900 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2901 libx264rgb_encoder_select="libx264_encoder"
2902 libx265_encoder_deps="libx265"
2903 libxavs_encoder_deps="libxavs"
2904 libxvid_encoder_deps="libxvid"
2905 libzvbi_teletext_decoder_deps="libzvbi"
2906 videotoolbox_deps="VideoToolbox_VideoToolbox_h"
2907 videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework CoreVideo"
2908 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2909 videotoolbox_encoder_suggest="vda_framework vt_bt2020"
2910 vt_bt2020_deps="kCVImageBufferColorPrimaries_ITU_R_2020"
2911
2912 # demuxers / muxers
2913 ac3_demuxer_select="ac3_parser"
2914 aiff_muxer_select="iso_media"
2915 asf_demuxer_select="riffdec"
2916 asf_o_demuxer_select="riffdec"
2917 asf_muxer_select="riffenc"
2918 asf_stream_muxer_select="asf_muxer"
2919 avi_demuxer_select="iso_media riffdec exif"
2920 avi_muxer_select="riffenc"
2921 caf_demuxer_select="iso_media riffdec"
2922 caf_muxer_select="iso_media"
2923 dash_muxer_select="mp4_muxer"
2924 dirac_demuxer_select="dirac_parser"
2925 dts_demuxer_select="dca_parser"
2926 dtshd_demuxer_select="dca_parser"
2927 dv_demuxer_select="dvprofile"
2928 dv_muxer_select="dvprofile"
2929 dxa_demuxer_select="riffdec"
2930 eac3_demuxer_select="ac3_parser"
2931 f4v_muxer_select="mov_muxer"
2932 fifo_muxer_deps="threads"
2933 flac_demuxer_select="flac_parser"
2934 hds_muxer_select="flv_muxer"
2935 hls_muxer_select="mpegts_muxer"
2936 image2_alias_pix_demuxer_select="image2_demuxer"
2937 image2_brender_pix_demuxer_select="image2_demuxer"
2938 ipod_muxer_select="mov_muxer"
2939 ismv_muxer_select="mov_muxer"
2940 libnut_demuxer_deps="libnut"
2941 libnut_muxer_deps="libnut"
2942 matroska_audio_muxer_select="matroska_muxer"
2943 matroska_demuxer_select="iso_media riffdec"
2944 matroska_demuxer_suggest="bzlib lzo zlib"
2945 matroska_muxer_select="iso_media riffenc"
2946 mmf_muxer_select="riffenc"
2947 mov_demuxer_select="iso_media riffdec"
2948 mov_demuxer_suggest="zlib"
2949 mov_muxer_select="iso_media riffenc rtpenc_chain"
2950 mp3_demuxer_select="mpegaudio_parser"
2951 mp4_muxer_select="mov_muxer"
2952 mpegts_demuxer_select="iso_media"
2953 mpegts_muxer_select="adts_muxer latm_muxer"
2954 mpegtsraw_demuxer_select="mpegts_demuxer"
2955 mxf_d10_muxer_select="mxf_muxer"
2956 mxf_opatom_muxer_select="mxf_muxer"
2957 nut_muxer_select="riffenc"
2958 nuv_demuxer_select="riffdec"
2959 oga_muxer_select="ogg_muxer"
2960 ogg_demuxer_select="dirac_parse"
2961 ogv_muxer_select="ogg_muxer"
2962 opus_muxer_select="ogg_muxer"
2963 psp_muxer_select="mov_muxer"
2964 rtp_demuxer_select="sdp_demuxer"
2965 rtp_muxer_select="golomb"
2966 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2967 rtsp_demuxer_select="http_protocol rtpdec"
2968 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2969 sap_demuxer_select="sdp_demuxer"
2970 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2971 sdp_demuxer_select="rtpdec"
2972 smoothstreaming_muxer_select="ismv_muxer"
2973 spdif_muxer_select="aac_parser"
2974 spx_muxer_select="ogg_muxer"
2975 swf_demuxer_suggest="zlib"
2976 tak_demuxer_select="tak_parser"
2977 tg2_muxer_select="mov_muxer"
2978 tgp_muxer_select="mov_muxer"
2979 vobsub_demuxer_select="mpegps_demuxer"
2980 w64_demuxer_select="wav_demuxer"
2981 w64_muxer_select="wav_muxer"
2982 wav_demuxer_select="riffdec"
2983 wav_muxer_select="riffenc"
2984 webm_muxer_select="iso_media riffenc"
2985 webm_dash_manifest_demuxer_select="matroska_demuxer"
2986 wtv_demuxer_select="mpegts_demuxer riffdec"
2987 wtv_muxer_select="mpegts_muxer riffenc"
2988 xmv_demuxer_select="riffdec"
2989 xwma_demuxer_select="riffdec"
2990
2991 # indevs / outdevs
2992 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2993 alsa_outdev_deps="alsa_asoundlib_h"
2994 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2995 avfoundation_indev_select="avfoundation"
2996 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2997 caca_outdev_deps="libcaca"
2998 decklink_indev_deps="decklink pthreads"
2999 decklink_indev_extralibs="-lstdc++"
3000 decklink_outdev_deps="decklink pthreads"
3001 decklink_outdev_extralibs="-lstdc++"
3002 dshow_indev_deps="IBaseFilter"
3003 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3004 dv1394_indev_deps="dv1394"
3005 dv1394_indev_select="dv_demuxer"
3006 fbdev_indev_deps="linux_fb_h"
3007 fbdev_outdev_deps="linux_fb_h"
3008 gdigrab_indev_deps="CreateDIBSection"
3009 gdigrab_indev_extralibs="-lgdi32"
3010 gdigrab_indev_select="bmp_decoder"
3011 iec61883_indev_deps="libiec61883"
3012 jack_indev_deps="jack_jack_h"
3013 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3014 lavfi_indev_deps="avfilter"
3015 libcdio_indev_deps="libcdio"
3016 libdc1394_indev_deps="libdc1394"
3017 libv4l2_indev_deps="libv4l2"
3018 openal_indev_deps="openal"
3019 opengl_outdev_deps="opengl"
3020 oss_indev_deps_any="soundcard_h sys_soundcard_h"
3021 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
3022 pulse_indev_deps="libpulse"
3023 pulse_outdev_deps="libpulse"
3024 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
3025 qtkit_indev_select="qtkit"
3026 sdl2_outdev_deps="sdl2"
3027 sndio_indev_deps="sndio_h"
3028 sndio_outdev_deps="sndio_h"
3029 v4l_indev_deps="linux_videodev_h"
3030 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3031 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3032 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
3033 vfwcap_indev_extralibs="-lavicap32"
3034 xcbgrab_indev_deps="libxcb"
3035 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3036 xv_outdev_extralibs="-lXv -lX11 -lXext"
3037
3038 # protocols
3039 async_protocol_deps="threads"
3040 bluray_protocol_deps="libbluray"
3041 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
3042 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3043 ffrtmpcrypt_protocol_select="tcp_protocol"
3044 ffrtmphttp_protocol_deps="!librtmp_protocol"
3045 ffrtmphttp_protocol_select="http_protocol"
3046 ftp_protocol_select="tcp_protocol"
3047 gopher_protocol_select="network"
3048 http_protocol_select="tcp_protocol"
3049 httpproxy_protocol_select="tcp_protocol"
3050 https_protocol_select="tls_protocol"
3051 icecast_protocol_select="http_protocol"
3052 librtmp_protocol_deps="librtmp"
3053 librtmpe_protocol_deps="librtmp"
3054 librtmps_protocol_deps="librtmp"
3055 librtmpt_protocol_deps="librtmp"
3056 librtmpte_protocol_deps="librtmp"
3057 libsmbclient_protocol_deps="libsmbclient gplv3"
3058 libssh_protocol_deps="libssh"
3059 mmsh_protocol_select="http_protocol"
3060 mmst_protocol_select="network"
3061 rtmp_protocol_deps="!librtmp_protocol"
3062 rtmp_protocol_select="tcp_protocol"
3063 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3064 rtmps_protocol_deps="!librtmp_protocol"
3065 rtmps_protocol_select="tls_protocol"
3066 rtmpt_protocol_select="ffrtmphttp_protocol"
3067 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3068 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3069 rtp_protocol_select="udp_protocol"
3070 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3071 sctp_protocol_select="network"
3072 srtp_protocol_select="rtp_protocol srtp"
3073 tcp_protocol_select="network"
3074 tls_gnutls_protocol_deps="gnutls !tls_schannel_protocol !tls_securetransport_protocol"
3075 tls_gnutls_protocol_select="tcp_protocol"
3076 tls_openssl_protocol_deps="openssl !tls_schannel_protocol !tls_securetransport_protocol !tls_gnutls_protocol"
3077 tls_openssl_protocol_select="tcp_protocol"
3078 tls_schannel_protocol_deps="schannel"
3079 tls_schannel_protocol_select="tcp_protocol"
3080 tls_securetransport_protocol_deps="securetransport"
3081 tls_securetransport_protocol_select="tcp_protocol"
3082 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
3083 udp_protocol_select="network"
3084 udplite_protocol_select="network"
3085 unix_protocol_deps="sys_un_h"
3086 unix_protocol_select="network"
3087
3088 # filters
3089 afftfilt_filter_deps="avcodec"
3090 afftfilt_filter_select="fft"
3091 amovie_filter_deps="avcodec avformat"
3092 aresample_filter_deps="swresample"
3093 ass_filter_deps="libass"
3094 asyncts_filter_deps="avresample"
3095 atempo_filter_deps="avcodec"
3096 atempo_filter_select="rdft"
3097 azmq_filter_deps="libzmq"
3098 blackframe_filter_deps="gpl"
3099 boxblur_filter_deps="gpl"
3100 bs2b_filter_deps="libbs2b"
3101 colormatrix_filter_deps="gpl"
3102 cover_rect_filter_deps="avcodec avformat gpl"
3103 cropdetect_filter_deps="gpl"
3104 deinterlace_qsv_filter_deps="libmfx"
3105 deinterlace_vaapi_filter_deps="vaapi"
3106 delogo_filter_deps="gpl"
3107 deshake_filter_select="pixelutils"
3108 drawtext_filter_deps="libfreetype"
3109 eq_filter_deps="gpl"
3110 fftfilt_filter_deps="avcodec"
3111 fftfilt_filter_select="rdft"
3112 find_rect_filter_deps="avcodec avformat gpl"
3113 firequalizer_filter_deps="avcodec"
3114 firequalizer_filter_select="rdft"
3115 flite_filter_deps="libflite"
3116 framerate_filter_select="pixelutils"
3117 frei0r_filter_deps="frei0r dlopen"
3118 frei0r_src_filter_deps="frei0r dlopen"
3119 fspp_filter_deps="gpl"
3120 geq_filter_deps="gpl"
3121 histeq_filter_deps="gpl"
3122 hqdn3d_filter_deps="gpl"
3123 interlace_filter_deps="gpl"
3124 kerndeint_filter_deps="gpl"
3125 ladspa_filter_deps="ladspa dlopen"
3126 mcdeint_filter_deps="avcodec gpl"
3127 movie_filter_deps="avcodec avformat"
3128 mpdecimate_filter_deps="gpl"
3129 mpdecimate_filter_select="pixelutils"
3130 mptestsrc_filter_deps="gpl"
3131 negate_filter_deps="lut_filter"
3132 nnedi_filter_deps="gpl"
3133 ocr_filter_deps="libtesseract"
3134 ocv_filter_deps="libopencv"
3135 owdenoise_filter_deps="gpl"
3136 pan_filter_deps="swresample"
3137 perspective_filter_deps="gpl"
3138 phase_filter_deps="gpl"
3139 pp7_filter_deps="gpl"
3140 pp_filter_deps="gpl postproc"
3141 pullup_filter_deps="gpl"
3142 removelogo_filter_deps="avcodec avformat swscale"
3143 repeatfields_filter_deps="gpl"
3144 resample_filter_deps="avresample"
3145 rubberband_filter_deps="librubberband"
3146 sab_filter_deps="gpl swscale"
3147 scale2ref_filter_deps="swscale"
3148 scale_filter_deps="swscale"
3149 scale_qsv_filter_deps="libmfx"
3150 select_filter_select="pixelutils"
3151 showcqt_filter_deps="avcodec avformat swscale"
3152 showcqt_filter_select="fft"
3153 showfreqs_filter_deps="avcodec"
3154 showfreqs_filter_select="fft"
3155 showspectrum_filter_deps="avcodec"
3156 showspectrum_filter_select="fft"
3157 showspectrumpic_filter_deps="avcodec"
3158 showspectrumpic_filter_select="fft"
3159 smartblur_filter_deps="gpl swscale"
3160 sofalizer_filter_deps="netcdf avcodec"
3161 sofalizer_filter_select="fft"
3162 spectrumsynth_filter_deps="avcodec"
3163 spectrumsynth_filter_select="fft"
3164 spp_filter_deps="gpl avcodec"
3165 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3166 stereo3d_filter_deps="gpl"
3167 subtitles_filter_deps="avformat avcodec libass"
3168 super2xsai_filter_deps="gpl"
3169 pixfmts_super2xsai_test_deps="super2xsai_filter"
3170 tinterlace_filter_deps="gpl"
3171 tinterlace_merge_test_deps="tinterlace_filter"
3172 tinterlace_pad_test_deps="tinterlace_filter"
3173 uspp_filter_deps="gpl avcodec"
3174 vaguedenoiser_filter_deps="gpl"
3175 vidstabdetect_filter_deps="libvidstab"
3176 vidstabtransform_filter_deps="libvidstab"
3177 zmq_filter_deps="libzmq"
3178 zoompan_filter_deps="swscale"
3179 zscale_filter_deps="libzimg"
3180 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3181
3182 # examples
3183 avio_dir_cmd_deps="avformat avutil"
3184 avio_reading_deps="avformat avcodec avutil"
3185 decoding_encoding_example_deps="avcodec avformat avutil"
3186 demuxing_decoding_example_deps="avcodec avformat avutil"
3187 extract_mvs_example_deps="avcodec avformat avutil"
3188 filter_audio_example_deps="avfilter avutil"
3189 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3190 filtering_video_example_deps="avfilter avcodec avformat avutil"
3191 http_multiclient_example_deps="avformat avutil fork"
3192 metadata_example_deps="avformat avutil"
3193 muxing_example_deps="avcodec avformat avutil swscale"
3194 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
3195 remuxing_example_deps="avcodec avformat avutil"
3196 resampling_audio_example_deps="avutil swresample"
3197 scaling_video_example_deps="avutil swscale"
3198 transcode_aac_example_deps="avcodec avformat swresample"
3199 transcoding_example_deps="avfilter avcodec avformat avutil"
3200
3201 # libraries, in linking order
3202 avcodec_deps="avutil"
3203 avdevice_deps="avformat avcodec avutil"
3204 avfilter_deps="avutil"
3205 avformat_deps="avcodec avutil"
3206 avresample_deps="avutil"
3207 postproc_deps="avutil gpl"
3208 swresample_deps="avutil"
3209 swscale_deps="avutil"
3210
3211 # programs
3212 ffmpeg_deps="avcodec avfilter avformat swresample"
3213 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3214                null_filter
3215                trim_filter"
3216 ffplay_deps="avcodec avformat swscale swresample sdl2"
3217 ffplay_libs='$sdl2_libs'
3218 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3219 ffprobe_deps="avcodec avformat"
3220 ffserver_deps="avformat fork sarestart"
3221 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3222
3223 # documentation
3224 podpages_deps="perl"
3225 manpages_deps="perl pod2man"
3226 htmlpages_deps="perl"
3227 htmlpages_deps_any="makeinfo_html texi2html"
3228 txtpages_deps="perl makeinfo"
3229 doc_deps_any="manpages htmlpages podpages txtpages"
3230
3231 # default parameters
3232
3233 logfile="config.log"
3234
3235 # installation paths
3236 prefix_default="/usr/local"
3237 bindir_default='${prefix}/bin'
3238 datadir_default='${prefix}/share/ffmpeg'
3239 docdir_default='${prefix}/share/doc/ffmpeg'
3240 incdir_default='${prefix}/include'
3241 libdir_default='${prefix}/lib'
3242 mandir_default='${prefix}/share/man'
3243
3244 # toolchain
3245 ar_default="ar"
3246 cc_default="gcc"
3247 cxx_default="g++"
3248 host_cc_default="gcc"
3249 cp_f="cp -f"
3250 doxygen_default="doxygen"
3251 install="install"
3252 ln_s_default="ln -s -f"
3253 nm_default="nm -g"
3254 objformat="elf"
3255 pkg_config_default=pkg-config
3256 ranlib_default="ranlib"
3257 strip_default="strip"
3258 version_script='--version-script'
3259 yasmexe_default="yasm"
3260 windres_default="windres"
3261
3262 # OS
3263 target_os_default=$(tolower $(uname -s))
3264 host_os=$target_os_default
3265
3266 # machine
3267 if test "$target_os_default" = aix; then
3268     arch_default=$(uname -p)
3269     strip_default="strip -X32_64"
3270 else
3271     arch_default=$(uname -m)
3272 fi
3273 cpu="generic"
3274 intrinsics="none"
3275
3276 # configurable options
3277 enable $PROGRAM_LIST
3278 enable $DOCUMENT_LIST
3279 enable $EXAMPLE_LIST
3280 enable $(filter_out avresample $LIBRARY_LIST)
3281 enable stripping
3282
3283 enable asm
3284 enable debug
3285 enable doc
3286 enable faan faandct faanidct
3287 enable optimizations
3288 enable runtime_cpudetect
3289 enable safe_bitstream_reader
3290 enable static
3291 enable swscale_alpha
3292 enable valgrind_backtrace
3293
3294 sws_max_filter_size_default=256
3295 set_default sws_max_filter_size
3296
3297 # build settings
3298 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3299 LIBPREF="lib"
3300 LIBSUF=".a"
3301 FULLNAME='$(NAME)$(BUILDSUF)'
3302 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3303 SLIBPREF="lib"
3304 SLIBSUF=".so"
3305 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3306 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3307 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3308 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3309 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3310 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3311 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3312
3313 asflags_filter=echo
3314 cflags_filter=echo
3315 ldflags_filter=echo
3316
3317 AS_C='-c'
3318 AS_O='-o $@'
3319 CC_C='-c'
3320 CC_E='-E -o $@'
3321 CC_O='-o $@'
3322 CXX_C='-c'
3323 CXX_O='-o $@'
3324 OBJCC_C='-c'
3325 OBJCC_E='-E -o $@'
3326 OBJCC_O='-o $@'
3327 LD_O='-o $@'
3328 LD_LIB='-l%'
3329 LD_PATH='-L'
3330 HOSTCC_C='-c'
3331 HOSTCC_E='-E -o $@'
3332 HOSTCC_O='-o $@'
3333 HOSTLD_O='-o $@'
3334
3335 host_libs='-lm'
3336 host_cflags_filter=echo
3337 host_ldflags_filter=echo
3338
3339 target_path='$(CURDIR)'
3340
3341 # since the object filename is not given with the -MM flag, the compiler
3342 # is only able to print the basename, and we must add the path ourselves
3343 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3344 DEPFLAGS='-MM'
3345
3346 # find source path
3347 if test -f configure; then
3348     source_path=.
3349 else
3350     source_path=$(cd $(dirname "$0"); pwd)
3351     case "$source_path" in
3352         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3353     esac
3354     test -e "$source_path/config.h" &&
3355         die "Out of tree builds are impossible with config.h in source dir."
3356 fi
3357
3358 for v in "$@"; do
3359     r=${v#*=}
3360     l=${v%"$r"}
3361     r=$(sh_quote "$r")
3362     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3363 done
3364
3365 find_things(){
3366     thing=$1
3367     pattern=$2
3368     file=$source_path/$3
3369     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3370 }
3371
3372 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3373 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3374 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3375 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3376 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3377 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3378 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3379 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3380 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3381
3382 find_things_extern(){
3383     thing=$1
3384     pattern=$2
3385     file=$source_path/$3
3386     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3387 }
3388
3389 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3390 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3391
3392 ALL_COMPONENTS="
3393     $BSF_LIST
3394     $DECODER_LIST
3395     $DEMUXER_LIST
3396     $ENCODER_LIST
3397     $FILTER_LIST
3398     $HWACCEL_LIST
3399     $INDEV_LIST
3400     $MUXER_LIST
3401     $OUTDEV_LIST
3402     $PARSER_LIST
3403     $PROTOCOL_LIST
3404 "
3405
3406 for n in $COMPONENT_LIST; do
3407     v=$(toupper ${n%s})_LIST
3408     eval enable \$$v
3409     eval ${n}_if_any="\$$v"
3410 done
3411
3412 enable $ARCH_EXT_LIST
3413
3414 die_unknown(){
3415     echo "Unknown option \"$1\"."
3416     echo "See $0 --help for available options."
3417     exit 1
3418 }
3419
3420 print_in_columns() {
3421     cols=$(expr $ncols / 24)
3422     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3423 }
3424
3425 show_list() {
3426     suffix=_$1
3427     shift
3428     echo $* | sed s/$suffix//g | print_in_columns
3429     exit 0
3430 }
3431
3432 rand_list(){
3433     IFS=', '
3434     set -- $*
3435     unset IFS
3436     for thing; do
3437         comp=${thing%:*}
3438         prob=${thing#$comp}
3439         prob=${prob#:}
3440         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3441         echo "prob ${prob:-0.5}"
3442         printf '%s\n' $comp
3443     done
3444 }
3445
3446 do_random(){
3447     action=$1
3448     shift
3449     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3450     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3451 }
3452
3453 for opt do
3454     optval="${opt#*=}"
3455     case "$opt" in
3456         --extra-ldflags=*)
3457             add_ldflags $optval
3458         ;;
3459         --extra-ldexeflags=*)
3460             add_ldexeflags $optval
3461         ;;
3462         --extra-ldlibflags=*)
3463             add_ldlibflags $optval
3464         ;;
3465         --extra-libs=*)
3466             add_extralibs $optval
3467         ;;
3468         --disable-devices)
3469             disable $INDEV_LIST $OUTDEV_LIST
3470         ;;
3471         --enable-debug=*)
3472             debuglevel="$optval"
3473         ;;
3474         --disable-programs)
3475             disable $PROGRAM_LIST
3476         ;;
3477         --disable-everything)
3478             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3479         ;;
3480         --disable-all)
3481             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3482             disable $LIBRARY_LIST $PROGRAM_LIST doc
3483             enable avutil
3484         ;;
3485         --enable-random|--disable-random)
3486             action=${opt%%-random}
3487             do_random ${action#--} $COMPONENT_LIST
3488         ;;
3489         --enable-random=*|--disable-random=*)
3490             action=${opt%%-random=*}
3491             do_random ${action#--} $optval
3492         ;;
3493         --enable-*=*|--disable-*=*)
3494             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3495             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3496             eval list=\$$(toupper $thing)_LIST
3497             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3498             list=$(filter "$name" $list)
3499             [ "$list" = "" ] && warn "Option $opt did not match anything"
3500             $action $list
3501         ;;
3502         --enable-?*|--disable-?*)
3503             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3504             if is_in $option $COMPONENT_LIST; then
3505                 test $action = disable && action=unset
3506                 eval $action \$$(toupper ${option%s})_LIST
3507             elif is_in $option $CMDLINE_SELECT; then
3508                 $action $option
3509             else
3510                 die_unknown $opt
3511             fi
3512         ;;
3513         --list-*)
3514             NAME="${opt#--list-}"
3515             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3516             NAME=${NAME%s}
3517             eval show_list $NAME \$$(toupper $NAME)_LIST
3518         ;;
3519         --help|-h) show_help
3520         ;;
3521         --fatal-warnings) enable fatal_warnings
3522         ;;
3523         *)
3524             optname="${opt%%=*}"
3525             optname="${optname#--}"
3526             optname=$(echo "$optname" | sed 's/-/_/g')
3527             if is_in $optname $CMDLINE_SET; then
3528                 eval $optname='$optval'
3529             elif is_in $optname $CMDLINE_APPEND; then
3530                 append $optname "$optval"
3531             else
3532                 die_unknown $opt
3533             fi
3534         ;;
3535     esac
3536 done
3537
3538 for e in $env; do
3539     eval "export $e"
3540 done
3541
3542 # Mark specifically enabled, but normally autodetected libraries as requested.
3543 for lib in $AUTODETECT_LIBS; do
3544     enabled $lib && request $lib
3545 done
3546
3547 # Enable platform codecs by default.
3548 enable_weak audiotoolbox
3549
3550 # Enable hwaccels by default.
3551 enable_weak d3d11va dxva2 vaapi vda vdpau videotoolbox_hwaccel xvmc
3552 enable_weak xlib
3553
3554 enable_weak cuda cuvid nvenc vda_framework videotoolbox videotoolbox_encoder
3555
3556 disabled logging && logfile=/dev/null
3557
3558 # Disable all the library-specific components if the library itself
3559 # is disabled, see AVCODEC_LIST and following _LIST variables.
3560
3561 disable_components(){
3562     disabled ${1} && disable $(
3563         eval components="\$$(toupper ${1})_COMPONENTS"
3564         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3565     )
3566 }
3567
3568 map 'disable_components $v' $LIBRARY_LIST
3569
3570 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3571 set >> $logfile
3572
3573 test -n "$valgrind" && toolchain="valgrind-memcheck"
3574
3575 case "$toolchain" in
3576     *-asan)
3577         cc_default="${toolchain%-asan}"
3578         add_cflags  -fsanitize=address
3579         add_ldflags -fsanitize=address
3580     ;;
3581     *-msan)
3582         cc_default="${toolchain%-msan}"
3583         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3584         add_ldflags -fsanitize=memory
3585     ;;
3586     *-tsan)
3587         cc_default="${toolchain%-tsan}"
3588         add_cflags  -fsanitize=thread -fPIE
3589         add_ldflags -fsanitize=thread -pie
3590         case "$toolchain" in
3591             gcc-tsan)
3592                 add_cflags  -fPIC
3593                 add_ldflags -fPIC
3594                 ;;
3595         esac
3596     ;;
3597     *-usan)
3598         cc_default="${toolchain%-usan}"
3599         add_cflags  -fsanitize=undefined
3600         add_ldflags -fsanitize=undefined
3601     ;;
3602     valgrind-*)
3603         target_exec_default="valgrind"
3604         case "$toolchain" in
3605             valgrind-massif)
3606                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3607                 ;;
3608             valgrind-memcheck)
3609                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3610                 ;;
3611         esac
3612     ;;
3613     msvc)
3614         # Check whether the current MSVC version needs the C99 converter.
3615         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3616         # support enough of C99 to build ffmpeg. Default to the new
3617         # behaviour if the regexp was unable to match anything, since this
3618         # successfully parses the version number of existing supported
3619         # versions that require the converter (MSVC 2010 and 2012).
3620         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3621         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3622             cc_default="cl"
3623         else
3624             cc_default="c99wrap cl"
3625         fi
3626         ld_default="$source_path/compat/windows/mslink"
3627         nm_default="dumpbin -symbols"
3628         ar_default="lib"
3629         case "$arch" in
3630         arm*)
3631             as_default="armasm"
3632             ;;
3633         esac
3634         target_os_default="win32"
3635         # Use a relative path for TMPDIR. This makes sure all the
3636         # ffconf temp files are written with a relative path, avoiding
3637         # issues with msys/win32 path conversion for MSVC parameters
3638         # such as -Fo<file> or -out:<file>.
3639         TMPDIR=.
3640     ;;
3641     icl)
3642         cc_default="icl"
3643         ld_default="xilink"
3644         nm_default="dumpbin -symbols"
3645         ar_default="xilib"
3646         target_os_default="win32"
3647         TMPDIR=.
3648     ;;
3649     gcov)
3650         add_cflags  -fprofile-arcs -ftest-coverage
3651         add_ldflags -fprofile-arcs -ftest-coverage
3652     ;;
3653     llvm-cov)
3654         add_cflags -fprofile-arcs -ftest-coverage
3655         add_ldflags --coverage
3656     ;;
3657     hardened)
3658         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3659         add_cflags   -fno-strict-overflow -fstack-protector-all
3660         add_ldflags  -Wl,-z,relro -Wl,-z,now
3661         add_cflags   -fPIE
3662         add_ldexeflags -fPIE -pie
3663     ;;
3664     ?*)
3665         die "Unknown toolchain $toolchain"
3666     ;;
3667 esac
3668
3669 test -n "$cross_prefix" && enable cross_compile
3670
3671 if enabled cross_compile; then
3672     test -n "$arch" && test -n "$target_os" ||
3673         die "Must specify target arch and OS when cross-compiling"
3674 fi
3675
3676 ar_default="${cross_prefix}${ar_default}"
3677 cc_default="${cross_prefix}${cc_default}"
3678 cxx_default="${cross_prefix}${cxx_default}"
3679 nm_default="${cross_prefix}${nm_default}"
3680 pkg_config_default="${cross_prefix}${pkg_config_default}"
3681 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3682     ranlib_default="${cross_prefix}${ranlib_default} -D"
3683 else
3684     ranlib_default="${cross_prefix}${ranlib_default}"
3685 fi
3686 strip_default="${cross_prefix}${strip_default}"
3687 windres_default="${cross_prefix}${windres_default}"
3688
3689 sysinclude_default="${sysroot}/usr/include"
3690
3691 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3692     target_exec target_os yasmexe
3693 enabled cross_compile || host_cc_default=$cc
3694 set_default host_cc
3695
3696 pkg_config_fail_message=""
3697 if ! $pkg_config --version >/dev/null 2>&1; then
3698     warn "$pkg_config not found, library detection may fail."
3699     pkg_config=false
3700 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3701     pkg_config_fail_message="
3702 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3703 fi
3704
3705 if test $doxygen != $doxygen_default && \
3706   ! $doxygen --version >/dev/null 2>&1; then
3707     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3708 fi
3709
3710 exesuf() {
3711     case $1 in
3712         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3713     esac
3714 }
3715
3716 EXESUF=$(exesuf $target_os)
3717 HOSTEXESUF=$(exesuf $host_os)
3718
3719 # set temporary file name
3720 : ${TMPDIR:=$TEMPDIR}
3721 : ${TMPDIR:=$TMP}
3722 : ${TMPDIR:=/tmp}
3723
3724 if [ -n "$tempprefix" ] ; then
3725     mktemp(){
3726         echo $tempprefix.${HOSTNAME}.${UID}
3727     }
3728 elif ! check_cmd mktemp -u XXXXXX; then
3729     # simple replacement for missing mktemp
3730     # NOT SAFE FOR GENERAL USE
3731     mktemp(){
3732         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3733     }
3734 fi
3735
3736 tmpfile(){
3737     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3738         (set -C; exec > $tmp) 2>/dev/null ||
3739         die "Unable to create temporary file in $TMPDIR."
3740     append TMPFILES $tmp
3741     eval $1=$tmp
3742 }
3743
3744 trap 'rm -f -- $TMPFILES' EXIT
3745
3746 tmpfile TMPASM .asm
3747 tmpfile TMPC   .c
3748 tmpfile TMPCPP .cpp
3749 tmpfile TMPE   $EXESUF
3750 tmpfile TMPH   .h
3751 tmpfile TMPM   .m
3752 tmpfile TMPO   .o
3753 tmpfile TMPS   .S
3754 tmpfile TMPSH  .sh
3755 tmpfile TMPV   .ver
3756
3757 unset -f mktemp
3758
3759 chmod +x $TMPE
3760
3761 # make sure we can execute files in $TMPDIR
3762 cat > $TMPSH 2>> $logfile <<EOF
3763 #! /bin/sh
3764 EOF
3765 chmod +x $TMPSH >> $logfile 2>&1
3766 if ! $TMPSH >> $logfile 2>&1; then
3767     cat <<EOF
3768 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3769 variable to another directory and make sure that it is not mounted noexec.
3770 EOF
3771     die "Sanity test failed."
3772 fi
3773
3774 armasm_flags(){
3775     for flag; do
3776         case $flag in
3777             # Filter out MSVC cl.exe options from cflags that shouldn't
3778             # be passed to gas-preprocessor
3779             -M[TD]*)                                            ;;
3780             *)                  echo $flag                      ;;
3781         esac
3782    done
3783 }
3784
3785 ccc_flags(){
3786     for flag; do
3787         case $flag in
3788             -std=c99)           echo -c99                       ;;
3789             -mcpu=*)            echo -arch ${flag#*=}           ;;
3790             -mieee)             echo -ieee                      ;;
3791             -O*|-fast)          echo $flag                      ;;
3792             -fno-math-errno)    echo -assume nomath_errno       ;;
3793             -g)                 echo -g3                        ;;
3794             -Wall)              echo -msg_enable level2         ;;
3795             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3796             -Wl,*)              echo $flag                      ;;
3797             -f*|-W*)                                            ;;
3798             *)                  echo $flag                      ;;
3799         esac
3800    done
3801 }
3802
3803 cparser_flags(){
3804     for flag; do
3805         case $flag in
3806             -Wno-switch)             echo -Wno-switch-enum ;;
3807             -Wno-format-zero-length) ;;
3808             -Wdisabled-optimization) ;;
3809             -Wno-pointer-sign)       echo -Wno-other ;;
3810             *)                       echo $flag ;;
3811         esac
3812     done
3813 }
3814
3815 msvc_common_flags(){
3816     for flag; do
3817         case $flag in
3818             # In addition to specifying certain flags under the compiler
3819             # specific filters, they must be specified here as well or else the
3820             # generic catch all at the bottom will print the original flag.
3821             -Wall)                ;;
3822             -std=c99)             ;;
3823             # Common flags
3824             -fomit-frame-pointer) ;;
3825             -g)                   echo -Z7 ;;
3826             -fno-math-errno)      ;;
3827             -fno-common)          ;;
3828             -fno-signed-zeros)    ;;
3829             -fPIC)                ;;
3830             -mthumb)              ;;
3831             -march=*)             ;;
3832             -lz)                  echo zlib.lib ;;
3833             -lavifil32)           echo vfw32.lib ;;
3834             -lavicap32)           echo vfw32.lib user32.lib ;;
3835             -lx264)               echo libx264.lib ;;
3836             -l*)                  echo ${flag#-l}.lib ;;
3837             -LARGEADDRESSAWARE)   echo $flag ;;
3838             -L*)                  echo -libpath:${flag#-L} ;;
3839             *)                    echo $flag ;;
3840         esac
3841     done
3842 }
3843
3844 msvc_flags(){
3845     msvc_common_flags "$@"
3846     for flag; do
3847         case $flag in
3848             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3849                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3850                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3851                                        -wd4307 \
3852                                        -wd4273 -wd4554 -wd4701 ;;
3853         esac
3854     done
3855 }
3856
3857 icl_flags(){
3858     msvc_common_flags "$@"
3859     for flag; do
3860         case $flag in
3861             # Despite what Intel's documentation says -Wall, which is supported
3862             # on Windows, does enable remarks so disable them here.
3863             -Wall)                echo $flag -Qdiag-disable:remark ;;
3864             -std=c99)             echo -Qstd=c99 ;;
3865             -flto)                echo -ipo ;;
3866         esac
3867     done
3868 }
3869
3870 icc_flags(){
3871     for flag; do
3872         case $flag in
3873             -flto)                echo -ipo ;;
3874             *)                    echo $flag ;;
3875         esac
3876     done
3877 }
3878
3879 pgi_flags(){
3880     for flag; do
3881         case $flag in
3882             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3883             -fomit-frame-pointer) echo -Mnoframe ;;
3884             -g)                   echo -gopt ;;
3885             *)                    echo $flag ;;
3886         esac
3887     done
3888 }
3889
3890 suncc_flags(){
3891     for flag; do
3892         case $flag in
3893             -march=*|-mcpu=*)
3894                 case "${flag#*=}" in
3895                     native)                   echo -xtarget=native       ;;
3896                     v9|niagara)               echo -xarch=sparc          ;;
3897                     ultrasparc)               echo -xarch=sparcvis       ;;
3898                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3899                     i586|pentium)             echo -xchip=pentium        ;;
3900                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3901                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3902                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3903                     pentium4*)          echo -xtarget=pentium4           ;;
3904                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3905                     *-sse3)             echo -xarch=sse3                 ;;
3906                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3907                     bonnell)                   echo -xarch=ssse3         ;;
3908                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3909                     westmere)                  echo -xtarget=westmere    ;;
3910                     silvermont)                echo -xarch=sse4_2        ;;
3911                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3912                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
3913                                                echo -xarch=avx           ;;
3914                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3915                     btver1)                    echo -xarch=amdsse4a      ;;
3916                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
3917                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3918                     k8|opteron|athlon64|athlon-fx)
3919                                                echo -xarch=sse2a         ;;
3920                     athlon*)                   echo -xarch=pentium_proa  ;;
3921                 esac
3922                 ;;
3923             -std=c99)             echo -xc99              ;;
3924             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3925             -fPIC)                echo -KPIC -xcode=pic32 ;;
3926             -W*,*)                echo $flag              ;;
3927             -f*-*|-W*|-mimpure-text)                      ;;
3928             -shared)              echo -G                 ;;
3929             *)                    echo $flag              ;;
3930         esac
3931     done
3932 }
3933
3934 tms470_flags(){
3935     for flag; do
3936         case $flag in
3937             -march=*|-mcpu=*)
3938                 case "${flag#*=}" in
3939                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3940                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3941                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3942                     armv6*|arm11*)          echo -mv=6   ;;
3943                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3944                                             echo -mv=5e  ;;
3945                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3946                 esac
3947                 ;;
3948             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3949             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3950             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3951             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3952             -msoft-float)   echo --float_support=vfplib       ;;
3953             -O[0-3]|-mf=*)  echo $flag                        ;;
3954             -g)             echo -g -mn                       ;;
3955             -pds=*)         echo $flag                        ;;
3956             -D*|-I*)        echo $flag                        ;;
3957             --gcc|--abi=*)  echo $flag                        ;;
3958             -me)            echo $flag                        ;;
3959         esac
3960     done
3961 }
3962
3963 probe_cc(){
3964     pfx=$1
3965     _cc=$2
3966     first=$3
3967
3968     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3969     unset _ld_o _ldflags _ld_lib _ld_path
3970     unset _depflags _DEPCMD _DEPFLAGS
3971     _flags_filter=echo
3972
3973     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3974         true # no-op to avoid reading stdin in following checks
3975     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3976         _type=llvm_gcc
3977         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3978         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3979         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3980         _cflags_speed='-O3'
3981         _cflags_size='-Os'
3982     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3983         _type=gcc
3984         gcc_version=$($_cc --version | head -n1)
3985         gcc_basever=$($_cc -dumpversion)
3986         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3987         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3988         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3989         case $gcc_basever in
3990             2) ;;
3991             2.*) ;;
3992             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
3993         esac
3994         if [ "$first" = true ]; then
3995             case $gcc_basever in
3996                 4.2*)
3997                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
3998             esac
3999         fi
4000         _cflags_speed='-O3'
4001         _cflags_size='-Os'
4002     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4003         _type=icc
4004         _ident=$($_cc --version | head -n1)
4005         _depflags='-MMD'
4006         _cflags_speed='-O3'
4007         _cflags_size='-Os'
4008         _cflags_noopt='-O1'
4009         _flags_filter=icc_flags
4010     elif $_cc -v 2>&1 | grep -q xlc; then
4011         _type=xlc
4012         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4013         _cflags_speed='-O5'
4014         _cflags_size='-O5 -qcompact'
4015     elif $_cc -V 2>/dev/null | grep -q Compaq; then
4016         _type=ccc
4017         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
4018         _DEPFLAGS='-M'
4019         _cflags_speed='-fast'
4020         _cflags_size='-O1'
4021         _flags_filter=ccc_flags
4022     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4023         test -d "$sysroot" || die "No valid sysroot specified."
4024         _type=armcc
4025         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4026         armcc_conf="$PWD/armcc.conf"
4027         $_cc --arm_linux_configure                 \
4028              --arm_linux_config_file="$armcc_conf" \
4029              --configure_sysroot="$sysroot"        \
4030              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4031              die "Error creating armcc configuration file."
4032         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4033         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4034         as_default="${cross_prefix}gcc"
4035         _depflags='-MMD'
4036         _cflags_speed='-O3'
4037         _cflags_size='-Os'
4038     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
4039         _type=tms470
4040         _ident=$($_cc -version | head -n1 | tr -s ' ')
4041         _flags='--gcc --abi=eabi -me'
4042         _cc_e='-ppl -fe=$@'
4043         _cc_o='-fe=$@'
4044         _depflags='-ppa -ppd=$(@:.o=.d)'
4045         _cflags_speed='-O3 -mf=5'
4046         _cflags_size='-O3 -mf=2'
4047         _flags_filter=tms470_flags
4048     elif $_cc -v 2>&1 | grep -q clang; then
4049         _type=clang
4050         _ident=$($_cc --version 2>/dev/null | head -n1)
4051         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4052         _cflags_speed='-O3'
4053         _cflags_size='-Oz'
4054     elif $_cc -V 2>&1 | grep -q Sun; then
4055         _type=suncc
4056         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4057         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4058         _DEPFLAGS='-xM1 -xc99'
4059         _ldflags='-std=c99'
4060         _cflags_speed='-O5'
4061         _cflags_size='-O5 -xspace'
4062         _flags_filter=suncc_flags
4063     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4064         _type=pathscale
4065         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4066         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4067         _cflags_speed='-O2'
4068         _cflags_size='-Os'
4069         _flags_filter='filter_out -Wdisabled-optimization'
4070     elif $_cc -v 2>&1 | grep -q Open64; then
4071         _type=open64
4072         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4073         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4074         _cflags_speed='-O2'
4075         _cflags_size='-Os'
4076         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4077     elif $_cc -V 2>&1 | grep -q Portland; then
4078         _type=pgi
4079         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
4080         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
4081         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
4082         _cflags_size="-O2 -Munroll=c:1 $opt_common"
4083         _cflags_noopt="-O"
4084         _flags_filter=pgi_flags
4085     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4086         _type=armasm
4087         _ident=$($_cc | head -n1)
4088         # 4509: "This form of conditional instruction is deprecated"
4089         _flags="-nologo -ignore 4509"
4090         _flags_filter=armasm_flags
4091     elif $_cc 2>&1 | grep -q Intel; then
4092         _type=icl
4093         _ident=$($_cc 2>&1 | head -n1)
4094         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4095         # Not only is O3 broken on 13.x+ but it is slower on all previous
4096         # versions (tested) as well.
4097         _cflags_speed="-O2"
4098         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4099         if $_cc 2>&1 | grep -q Linker; then
4100             _ld_o='-out:$@'
4101         else
4102             _ld_o='-Fe$@'
4103         fi
4104         _cc_o='-Fo$@'
4105         _cc_e='-P'
4106         _flags_filter=icl_flags
4107         _ld_lib='lib%.a'
4108         _ld_path='-libpath:'
4109         # -Qdiag-error to make icl error when seeing certain unknown arguments
4110         _flags='-nologo -Qdiag-error:4044,10157'
4111         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4112         # with MSVC which enables it by default.
4113         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4114         disable stripping
4115     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4116         # lld can emulate multiple different linkers; in ms link.exe mode,
4117         # the -? parameter gives the help output which contains an identifyable
4118         # string, while it gives an error in other modes.
4119         _type=lld-link
4120         # The link.exe mode doesn't have a switch for getting the version,
4121         # but we can force it back to gnu mode and get the version from there.
4122         _ident=$($_cc -flavor gnu --version)
4123         _ld_o='-out:$@'
4124         _flags_filter=msvc_flags
4125         _ld_lib='lib%.a'
4126         _ld_path='-libpath:'
4127     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4128         _type=msvc
4129         _ident=$($_cc 2>&1 | head -n1)
4130         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4131         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4132         _cflags_speed="-O2"
4133         _cflags_size="-O1"
4134         if $_cc -nologo- 2>&1 | grep -q Linker; then
4135             _ld_o='-out:$@'
4136         else
4137             _ld_o='-Fe$@'
4138         fi
4139         _cc_o='-Fo$@'
4140         _cc_e='-P -Fi$@'
4141         _flags_filter=msvc_flags
4142         _ld_lib='lib%.a'
4143         _ld_path='-libpath:'
4144         _flags='-nologo'
4145         disable stripping
4146     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4147         _type=cparser
4148         _ident=$($_cc --version | head -n1)
4149         _depflags='-MMD'
4150         _cflags_speed='-O4'
4151         _cflags_size='-O2'
4152         _flags_filter=cparser_flags
4153     fi
4154
4155     eval ${pfx}_type=\$_type
4156     eval ${pfx}_ident=\$_ident
4157 }
4158
4159 set_ccvars(){
4160     eval ${1}_C=\${_cc_c-\${${1}_C}}
4161     eval ${1}_E=\${_cc_e-\${${1}_E}}
4162     eval ${1}_O=\${_cc_o-\${${1}_O}}
4163
4164     if [ -n "$_depflags" ]; then
4165         eval ${1}_DEPFLAGS=\$_depflags
4166     else
4167         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4168         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4169         eval DEP${1}FLAGS=\$_flags
4170     fi
4171 }
4172
4173 probe_cc cc "$cc" "true"
4174 cflags_filter=$_flags_filter
4175 cflags_speed=$_cflags_speed
4176 cflags_size=$_cflags_size
4177 cflags_noopt=$_cflags_noopt
4178 add_cflags $_flags $_cflags
4179 cc_ldflags=$_ldflags
4180 set_ccvars CC
4181
4182 probe_cc hostcc "$host_cc"
4183 host_cflags_filter=$_flags_filter
4184 add_host_cflags  $_flags $_cflags
4185 set_ccvars HOSTCC
4186
4187 test -n "$cc_type" && enable $cc_type ||
4188     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4189
4190 : ${as_default:=$cc}
4191 : ${objcc_default:=$cc}
4192 : ${dep_cc_default:=$cc}
4193 : ${ld_default:=$cc}
4194 : ${host_ld_default:=$host_cc}
4195 set_default ar as objcc dep_cc ld ln_s host_ld windres
4196
4197 probe_cc as "$as"
4198 asflags_filter=$_flags_filter
4199 add_asflags $_flags $_cflags
4200 set_ccvars AS
4201
4202 probe_cc objcc "$objcc"
4203 objcflags_filter=$_flags_filter
4204 add_objcflags $_flags $_cflags
4205 set_ccvars OBJC
4206
4207 probe_cc ld "$ld"
4208 ldflags_filter=$_flags_filter
4209 add_ldflags $_flags $_ldflags
4210 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4211 LD_O=${_ld_o-$LD_O}
4212 LD_LIB=${_ld_lib-$LD_LIB}
4213 LD_PATH=${_ld_path-$LD_PATH}
4214
4215 probe_cc hostld "$host_ld"
4216 host_ldflags_filter=$_flags_filter
4217 add_host_ldflags $_flags $_ldflags
4218 HOSTLD_O=${_ld_o-$HOSTLD_O}
4219
4220 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4221     probe_cc depcc "$dep_cc"
4222     CCDEP=${_DEPCMD:-$DEPCMD}
4223     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4224     DEPCCFLAGS=$_flags
4225 fi
4226
4227 if $ar 2>&1 | grep -q Microsoft; then
4228     arflags="-nologo"
4229     ar_o='-out:$@'
4230 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
4231     arflags="rq"
4232     ar_o='$@'
4233 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
4234     arflags='-Xany -r -c'
4235     ar_o='$@'
4236 elif $ar 2>&1 | grep -q "\[D\] "; then
4237     arflags="rcD"
4238     ar_o='$@'
4239 else
4240     arflags="rc"
4241     ar_o='$@'
4242 fi
4243
4244 add_cflags $extra_cflags
4245 add_cxxflags $extra_cxxflags
4246 add_objcflags $extra_objcflags
4247 add_asflags $extra_cflags
4248
4249 if test -n "$sysroot"; then
4250     case "$cc_type" in
4251         gcc|llvm_gcc|clang)
4252             add_cppflags --sysroot="$sysroot"
4253             add_ldflags --sysroot="$sysroot"
4254 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
4255             add_cppflags -isysroot "$sysroot"
4256             add_ldflags -isysroot "$sysroot"
4257         ;;
4258         tms470)
4259             add_cppflags -I"$sysinclude"
4260             add_ldflags  --sysroot="$sysroot"
4261         ;;
4262     esac
4263 fi
4264
4265 if test "$cpu" = host; then
4266     enabled cross_compile &&
4267         die "--cpu=host makes no sense when cross-compiling."
4268
4269     case "$cc_type" in
4270         gcc|llvm_gcc)
4271             check_native(){
4272                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4273                 sed -n "/cc1.*$1=/{
4274                             s/.*$1=\\([^ ]*\\).*/\\1/
4275                             p
4276                             q
4277                         }" $TMPE
4278             }
4279             cpu=$(check_native -march || check_native -mcpu)
4280         ;;
4281         clang)
4282             check_native(){
4283                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4284                 sed -n "/cc1.*-target-cpu /{
4285                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4286                             p
4287                             q
4288                         }" $TMPE
4289             }
4290             cpu=$(check_native -march)
4291         ;;
4292     esac
4293
4294     test "${cpu:-host}" = host &&
4295         die "--cpu=host not supported with compiler $cc"
4296 fi
4297
4298 # Deal with common $arch aliases
4299 case "$arch" in
4300     aarch64|arm64)
4301         arch="aarch64"
4302     ;;
4303     arm*|iPad*|iPhone*)
4304         arch="arm"
4305     ;;
4306     mips*|IP*)
4307         case "$arch" in
4308         *el)
4309             add_cppflags -EL
4310             add_ldflags -EL
4311         ;;
4312         *eb)
4313             add_cppflags -EB
4314             add_ldflags -EB
4315         ;;
4316         esac
4317         arch="mips"
4318     ;;
4319     parisc*|hppa*)
4320         arch="parisc"
4321     ;;
4322     "Power Macintosh"|ppc*|powerpc*)
4323         arch="ppc"
4324     ;;
4325     s390|s390x)
4326         arch="s390"
4327     ;;
4328     sh4|sh)
4329         arch="sh4"
4330     ;;
4331     sun4*|sparc*)
4332         arch="sparc"
4333     ;;
4334     tilegx|tile-gx)
4335         arch="tilegx"
4336     ;;
4337     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4338         arch="x86"
4339     ;;
4340 esac
4341
4342 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4343 enable $arch
4344
4345 # Add processor-specific flags
4346 if enabled aarch64; then
4347
4348     case $cpu in
4349         armv*)
4350             cpuflags="-march=$cpu"
4351         ;;
4352         *)
4353             cpuflags="-mcpu=$cpu"
4354         ;;
4355     esac
4356
4357 elif enabled alpha; then
4358
4359     cpuflags="-mcpu=$cpu"
4360
4361 elif enabled arm; then
4362
4363     check_arm_arch() {
4364         check_cpp_condition stddef.h \
4365             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4366             $cpuflags
4367     }
4368
4369     probe_arm_arch() {
4370         if   check_arm_arch 4;        then echo armv4
4371         elif check_arm_arch 4T;       then echo armv4t
4372         elif check_arm_arch 5;        then echo armv5
4373         elif check_arm_arch 5E;       then echo armv5e
4374         elif check_arm_arch 5T;       then echo armv5t
4375         elif check_arm_arch 5TE;      then echo armv5te
4376         elif check_arm_arch 5TEJ;     then echo armv5te
4377         elif check_arm_arch 6;        then echo armv6
4378         elif check_arm_arch 6J;       then echo armv6j
4379         elif check_arm_arch 6K;       then echo armv6k
4380         elif check_arm_arch 6Z;       then echo armv6z
4381         elif check_arm_arch 6ZK;      then echo armv6zk
4382         elif check_arm_arch 6T2;      then echo armv6t2
4383         elif check_arm_arch 7;        then echo armv7
4384         elif check_arm_arch 7A  7_A;  then echo armv7-a
4385         elif check_arm_arch 7S;       then echo armv7-a
4386         elif check_arm_arch 7R  7_R;  then echo armv7-r
4387         elif check_arm_arch 7M  7_M;  then echo armv7-m
4388         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4389         elif check_arm_arch 8A  8_A;  then echo armv8-a
4390         fi
4391     }
4392
4393     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4394
4395     case $cpu in
4396         armv*)
4397             cpuflags="-march=$cpu"
4398             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4399         ;;
4400         *)
4401             cpuflags="-mcpu=$cpu"
4402             case $cpu in
4403                 cortex-a*)                               subarch=armv7a  ;;
4404                 cortex-r*)                               subarch=armv7r  ;;
4405                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4406                 arm11*)                                  subarch=armv6   ;;
4407                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4408                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4409                 *)                             subarch=$(probe_arm_arch) ;;
4410             esac
4411         ;;
4412     esac
4413
4414     case "$subarch" in
4415         armv5t*)    enable fast_clz                ;;
4416         armv[6-8]*)
4417             enable fast_clz
4418             disabled fast_unaligned || enable fast_unaligned
4419             ;;
4420     esac
4421
4422 elif enabled avr32; then
4423
4424     case $cpu in
4425         ap7[02]0[0-2])
4426             subarch="avr32_ap"
4427             cpuflags="-mpart=$cpu"
4428         ;;
4429         ap)
4430             subarch="avr32_ap"
4431             cpuflags="-march=$cpu"
4432         ;;
4433         uc3[ab]*)
4434             subarch="avr32_uc"
4435             cpuflags="-mcpu=$cpu"
4436         ;;
4437         uc)
4438             subarch="avr32_uc"
4439             cpuflags="-march=$cpu"
4440         ;;
4441     esac
4442
4443 elif enabled bfin; then
4444
4445     cpuflags="-mcpu=$cpu"
4446
4447 elif enabled mips; then
4448
4449     cpuflags="-march=$cpu"
4450
4451     if [ "$cpu" != "generic" ]; then
4452         disable mips32r2
4453         disable mips32r5
4454         disable mips64r2
4455         disable mips32r6
4456         disable mips64r6
4457         disable loongson2
4458         disable loongson3
4459
4460         case $cpu in
4461             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4462                 enable mips32r2
4463                 disable msa
4464             ;;
4465             p5600|i6400|p6600)
4466                 disable mipsdsp
4467                 disable mipsdspr2
4468             ;;
4469             loongson*)
4470                 enable loongson2
4471                 enable loongson3
4472                 enable local_aligned_8 local_aligned_16 local_aligned_32
4473                 enable simd_align_16
4474                 enable fast_64bit
4475                 enable fast_clz
4476                 enable fast_cmov
4477                 enable fast_unaligned
4478                 disable aligned_stack
4479                 disable mipsfpu
4480                 disable mipsdsp
4481                 disable mipsdspr2
4482                 case $cpu in
4483                     loongson3*)
4484                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4485                     ;;
4486                     loongson2e)
4487                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4488                     ;;
4489                     loongson2f)
4490                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4491                     ;;
4492                 esac
4493             ;;
4494             *)
4495                 # Unknown CPU. Disable everything.
4496                 warn "unknown CPU. Disabling all MIPS optimizations."
4497                 disable mipsfpu
4498                 disable mipsdsp
4499                 disable mipsdspr2
4500                 disable msa
4501                 disable mmi
4502             ;;
4503         esac
4504
4505         case $cpu in
4506             24kc)
4507                 disable mipsfpu
4508                 disable mipsdsp
4509                 disable mipsdspr2
4510             ;;
4511             24kf*)
4512                 disable mipsdsp
4513                 disable mipsdspr2
4514             ;;
4515             24kec|34kc|1004kc)
4516                 disable mipsfpu
4517                 disable mipsdspr2
4518             ;;
4519             24kef*|34kf*|1004kf*)
4520                 disable mipsdspr2
4521             ;;
4522             74kc)
4523                 disable mipsfpu
4524             ;;
4525             p5600)
4526                 enable mips32r5
4527                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4528             ;;
4529             i6400)
4530                 enable mips64r6
4531                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4532             ;;
4533             p6600)
4534                 enable mips64r6
4535                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4536             ;;
4537         esac
4538     else
4539         # We do not disable anything. Is up to the user to disable the unwanted features.
4540         warn 'generic cpu selected'
4541     fi
4542
4543 elif enabled ppc; then
4544
4545     disable ldbrx
4546
4547     case $(tolower $cpu) in
4548         601|ppc601|powerpc601)
4549             cpuflags="-mcpu=601"
4550             disable altivec
4551         ;;
4552         603*|ppc603*|powerpc603*)
4553             cpuflags="-mcpu=603"
4554             disable altivec
4555         ;;
4556         604*|ppc604*|powerpc604*)
4557             cpuflags="-mcpu=604"
4558             disable altivec
4559         ;;
4560         g3|75*|ppc75*|powerpc75*)
4561             cpuflags="-mcpu=750"
4562             disable altivec
4563         ;;
4564         g4|745*|ppc745*|powerpc745*)
4565             cpuflags="-mcpu=7450"
4566             disable vsx
4567         ;;
4568         74*|ppc74*|powerpc74*)
4569             cpuflags="-mcpu=7400"
4570             disable vsx
4571         ;;
4572         g5|970|ppc970|powerpc970)
4573             cpuflags="-mcpu=970"
4574             disable vsx
4575         ;;
4576         power[3-6]*)
4577             cpuflags="-mcpu=$cpu"
4578             disable vsx
4579         ;;
4580         power[7-8]*)
4581             cpuflags="-mcpu=$cpu"
4582         ;;
4583         cell)
4584             cpuflags="-mcpu=cell"
4585             enable ldbrx
4586             disable vsx
4587         ;;
4588         e500mc)
4589             cpuflags="-mcpu=e500mc"
4590             disable altivec
4591         ;;
4592         e500v2)
4593             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4594             disable altivec
4595             disable dcbzl
4596         ;;
4597         e500)
4598             cpuflags="-mcpu=8540 -mhard-float"
4599             disable altivec
4600             disable dcbzl
4601         ;;
4602     esac
4603
4604 elif enabled sparc; then
4605
4606     case $cpu in
4607         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4608             cpuflags="-mcpu=$cpu"
4609         ;;
4610         ultrasparc*|niagara[234])
4611             cpuflags="-mcpu=$cpu"
4612         ;;
4613     esac
4614
4615 elif enabled x86; then
4616
4617     case $cpu in
4618         i[345]86|pentium)
4619             cpuflags="-march=$cpu"
4620             disable i686
4621             disable mmx
4622         ;;
4623         # targets that do NOT support nopl and conditional mov (cmov)
4624         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4625             cpuflags="-march=$cpu"
4626             disable i686
4627         ;;
4628         # targets that do support nopl and conditional mov (cmov)
4629         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4630         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4631         |amdfam10|barcelona|b[dt]ver*|znver*)
4632             cpuflags="-march=$cpu"
4633             enable i686
4634             enable fast_cmov
4635         ;;
4636         # targets that do support conditional mov but on which it's slow
4637         pentium4|pentium4m|prescott|nocona)
4638             cpuflags="-march=$cpu"
4639             enable i686
4640             disable fast_cmov
4641         ;;
4642     esac
4643
4644 fi
4645
4646 if [ "$cpu" != generic ]; then
4647     add_cflags  $cpuflags
4648     add_asflags $cpuflags
4649     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4650 fi
4651
4652 # compiler sanity check
4653 check_exec <<EOF
4654 int main(void){ return 0; }
4655 EOF
4656 if test "$?" != 0; then
4657     echo "$cc is unable to create an executable file."
4658     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4659         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4660         echo "Only do this if you know what cross compiling means."
4661     fi
4662     die "C compiler test failed."
4663 fi
4664
4665 add_cppflags -D_ISOC99_SOURCE
4666 add_cxxflags -D__STDC_CONSTANT_MACROS
4667 add_cxxflags -std=c++98
4668
4669 # some compilers silently accept -std=c11, so we also need to check that the
4670 # version macro is defined properly
4671 if test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L"; then
4672     add_cflags -std=c11
4673 else
4674     check_cflags -std=c99
4675 fi
4676
4677 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4678 #include <stdlib.h>
4679 EOF
4680 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4681 #include <stdlib.h>
4682 EOF
4683
4684 add_host_cppflags -D_ISOC99_SOURCE
4685 check_host_cflags -std=c99
4686 check_host_cflags -Wall
4687 check_host_cflags -O3
4688
4689 check_64bit(){
4690     arch32=$1
4691     arch64=$2
4692     expr=$3
4693     check_code cc "" "int test[2*($expr) - 1]" &&
4694         subarch=$arch64 || subarch=$arch32
4695 }
4696
4697 case "$arch" in
4698     aarch64|alpha|ia64)
4699         spic=$shared
4700     ;;
4701     mips)
4702         check_64bit mips mips64 '_MIPS_SIM > 1'
4703         spic=$shared
4704     ;;
4705     parisc)
4706         check_64bit parisc parisc64 'sizeof(void *) > 4'
4707         spic=$shared
4708     ;;
4709     ppc)
4710         check_64bit ppc ppc64 'sizeof(void *) > 4'
4711         spic=$shared
4712     ;;
4713     s390)
4714         check_64bit s390 s390x 'sizeof(void *) > 4'
4715         spic=$shared
4716     ;;
4717     sparc)
4718         check_64bit sparc sparc64 'sizeof(void *) > 4'
4719         spic=$shared
4720     ;;
4721     x86)
4722         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4723         # Treat x32 as x64 for now. Note it also needs spic=$shared
4724         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4725             subarch=x86_64
4726         if test "$subarch" = "x86_64"; then
4727             spic=$shared
4728         fi
4729     ;;
4730     ppc)
4731         check_cc <<EOF && subarch="ppc64"
4732         int test[(int)sizeof(char*) - 7];
4733 EOF
4734     ;;
4735 esac
4736
4737 enable $subarch
4738 enabled spic && enable_weak pic
4739
4740 # OS specific
4741 case $target_os in
4742     aix)
4743         SHFLAGS=-shared
4744         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4745         enabled shared && add_ldflags -Wl,-brtl
4746         ;;
4747     android)
4748         disable symver
4749         enable section_data_rel_ro
4750         SLIB_INSTALL_NAME='$(SLIBNAME)'
4751         SLIB_INSTALL_LINKS=
4752         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4753         ;;
4754     haiku)
4755         prefix_default="/boot/common"
4756         network_extralibs="-lnetwork"
4757         host_libs=
4758         ;;
4759     sunos)
4760         SHFLAGS='-shared -Wl,-h,$$(@F)'
4761         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4762         network_extralibs="-lsocket -lnsl"
4763         add_cppflags -D__EXTENSIONS__
4764         # When using suncc to build, the Solaris linker will mark
4765         # an executable with each instruction set encountered by
4766         # the Solaris assembler.  As our libraries contain their own
4767         # guards for processor-specific code, instead suppress
4768         # generation of the HWCAPS ELF section on Solaris x86 only.
4769         enabled_all suncc x86 &&
4770             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4771             add_ldflags -Wl,-M,mapfile
4772         nm_default='nm -P -g'
4773         version_script='-M'
4774         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
4775         ;;
4776     netbsd)
4777         disable symver
4778         oss_indev_extralibs="-lossaudio"
4779         oss_outdev_extralibs="-lossaudio"
4780         enabled gcc || check_ldflags -Wl,-zmuldefs
4781         ;;
4782     openbsd|bitrig)
4783         disable symver
4784         SHFLAGS='-shared'
4785         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4786         SLIB_INSTALL_LINKS=
4787         oss_indev_extralibs="-lossaudio"
4788         oss_outdev_extralibs="-lossaudio"
4789         ;;
4790     dragonfly)
4791         disable symver
4792         ;;
4793     freebsd)
4794         ;;
4795     bsd/os)
4796         add_extralibs -lpoll -lgnugetopt
4797         strip="strip -d"
4798         ;;
4799     darwin)
4800         enabled ppc && add_asflags -force_cpusubtype_ALL
4801         install_name_dir_default='$(SHLIBDIR)'
4802         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4803         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4804         strip="${strip} -x"
4805         add_ldflags -Wl,-dynamic,-search_paths_first
4806         SLIBSUF=".dylib"
4807         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4808         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4809         objformat="macho"
4810         enabled x86_64 && objformat="macho64"
4811         enabled_any pic shared x86_64 ||
4812             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4813         check_header dispatch/dispatch.h &&
4814             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
4815         version_script='-exported_symbols_list'
4816         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
4817         ;;
4818     msys*)
4819         die "Native MSYS builds are discouraged, please use the MINGW environment."
4820         ;;
4821     mingw32*|mingw64*)
4822         if test $target_os = "mingw32ce"; then
4823             disable network
4824         else
4825             target_os=mingw32
4826         fi
4827         decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
4828         decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
4829         LIBTARGET=i386
4830         if enabled x86_64; then
4831             LIBTARGET="i386:x86-64"
4832         elif enabled arm; then
4833             LIBTARGET=arm-wince
4834         fi
4835         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4836         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4837         shlibdir_default="$bindir_default"
4838         SLIBPREF=""
4839         SLIBSUF=".dll"
4840         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4841         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4842         dlltool="${cross_prefix}dlltool"
4843         if check_cmd lib.exe -list; then
4844             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4845             if enabled x86_64; then
4846                 LIBTARGET=x64
4847             fi
4848         elif check_cmd $dlltool --version; then
4849             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4850         fi
4851         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4852         SLIB_INSTALL_LINKS=
4853         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4854         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4855         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--disable-auto-image-base'
4856         objformat="win32"
4857         ranlib=:
4858         enable dos_paths
4859         check_ldflags -Wl,--nxcompat,--dynamicbase
4860         # Lets work around some stupidity in binutils.
4861         # ld will strip relocations from executables even though we need them
4862         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4863         # however ld then forgets what the entry point should be (oops) so we
4864         # have to manually (re)set it.
4865         if enabled x86_32; then
4866             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
4867         elif enabled x86_64; then
4868             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
4869             check_ldflags -Wl,--high-entropy-va # binutils 2.25
4870             # Set image base >4GB for extra entropy with HEASLR
4871             add_ldexeflags -Wl,--image-base,0x140000000
4872             append SHFLAGS -Wl,--image-base,0x180000000
4873         fi
4874         ;;
4875     win32|win64)
4876         disable symver
4877         if enabled shared; then
4878             # Link to the import library instead of the normal static library
4879             # for shared libs.
4880             LD_LIB='%.lib'
4881             # Cannot build both shared and static libs with MSVC or icl.
4882             disable static
4883         fi
4884         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4885         shlibdir_default="$bindir_default"
4886         SLIBPREF=""
4887         SLIBSUF=".dll"
4888         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4889         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4890         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4891         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4892         SLIB_INSTALL_LINKS=
4893         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4894         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4895         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4896         objformat="win32"
4897         ranlib=:
4898         enable dos_paths
4899         ;;
4900     cygwin*)
4901         target_os=cygwin
4902         shlibdir_default="$bindir_default"
4903         SLIBPREF="cyg"
4904         SLIBSUF=".dll"
4905         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4906         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4907         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4908         SLIB_INSTALL_LINKS=
4909         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4910         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4911         objformat="win32"
4912         enable dos_paths
4913         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4914         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4915         ;;
4916     *-dos|freedos|opendos)
4917         network_extralibs="-lsocket"
4918         objformat="coff"
4919         enable dos_paths
4920         add_cppflags -U__STRICT_ANSI__
4921         ;;
4922     linux)
4923         enable dv1394
4924         enable section_data_rel_ro
4925         ;;
4926     irix*)
4927         target_os=irix
4928         ranlib="echo ignoring ranlib"
4929         ;;
4930     os/2*)
4931         strip="lxlite -CS"
4932         objformat="aout"
4933         add_cppflags -D_GNU_SOURCE
4934         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4935         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4936         LIBSUF="_s.a"
4937         SLIBPREF=""
4938         SLIBSUF=".dll"
4939         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4940         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4941         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
4942             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
4943             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
4944             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
4945             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
4946         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
4947             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
4948         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4949         SLIB_INSTALL_LINKS=
4950         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
4951         enable dos_paths
4952         enable_weak os2threads
4953         ;;
4954     gnu/kfreebsd)
4955         add_cppflags -D_BSD_SOURCE
4956         ;;
4957     gnu)
4958         ;;
4959     qnx)
4960         add_cppflags -D_QNX_SOURCE
4961         network_extralibs="-lsocket"
4962         ;;
4963     symbian)
4964         SLIBSUF=".dll"
4965         enable dos_paths
4966         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4967         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4968         add_ldflags -Wl,--target1-abs,--no-undefined \
4969                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4970                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4971         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4972                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4973                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4974         ;;
4975     osf1)
4976         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4977         ;;
4978     minix)
4979         ;;
4980     plan9)
4981         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4982                      -D_REENTRANT_SOURCE        \
4983                      -D_RESEARCH_SOURCE         \
4984                      -DFD_SETSIZE=96            \
4985                      -DHAVE_SOCK_OPTS
4986         add_compat strtod.o strtod=avpriv_strtod
4987         network_extralibs='-lbsd'
4988         exeobjs=compat/plan9/main.o
4989         disable ffserver
4990         cp_f='cp'
4991         ;;
4992     none)
4993         ;;
4994     *)
4995         die "Unknown OS '$target_os'."
4996         ;;
4997 esac
4998
4999 # test if creating links works
5000 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5001 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5002 mkdir "$link_dest"
5003 $ln_s "$link_dest" "$link_name"
5004 touch "$link_dest/test_file"
5005 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5006     # create link to source path
5007     [ -e src ] && rm src
5008     $ln_s "$source_path" src
5009     source_link=src
5010 else
5011     # creating directory links doesn't work
5012     # fall back to using the full source path
5013     source_link="$source_path"
5014 fi
5015 # cleanup
5016 rm -r "$link_dest"
5017 rm -r "$link_name"
5018
5019 # determine libc flavour
5020
5021 probe_libc(){
5022     pfx=$1
5023     pfx_no_=${pfx%_}
5024     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5025     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5026         eval ${pfx}libc_type=uclibc
5027         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5028     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5029         eval ${pfx}libc_type=glibc
5030         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5031     # MinGW headers can be installed on Cygwin, so check for newlib first.
5032     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5033         eval ${pfx}libc_type=newlib
5034         add_${pfx}cppflags -U__STRICT_ANSI__
5035     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5036     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5037         eval ${pfx}libc_type=mingw64
5038         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5039             add_compat msvcrt/snprintf.o
5040             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5041         fi
5042         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5043         eval test \$${pfx_no_}cc_type = "gcc" &&
5044             add_${pfx}cppflags -D__printf__=__gnu_printf__
5045     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5046          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5047         eval ${pfx}libc_type=mingw32
5048         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5049             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5050             die "ERROR: MinGW32 runtime version must be >= 3.15."
5051         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5052         check_${pfx}cpp_condition _mingw.h "defined(_WIN32_WINNT) && _WIN32_WINNT >= 0x0502" ||
5053             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
5054         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700__" &&
5055             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5056         eval test \$${pfx_no_}cc_type = "gcc" &&
5057             add_${pfx}cppflags -D__printf__=__gnu_printf__
5058     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5059         eval ${pfx}libc_type=msvcrt
5060         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5061             if [ "$pfx" = host_ ]; then
5062                 add_host_cppflags -Dsnprintf=_snprintf
5063             else
5064                 add_compat strtod.o strtod=avpriv_strtod
5065                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5066                                              _snprintf=avpriv_snprintf  \
5067                                              vsnprintf=avpriv_vsnprintf
5068             fi
5069         fi
5070         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5071         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5072         # 0x601 by default unless something else is set by the user.
5073         # This can easily lead to us detecting functions only present
5074         # in such new versions and producing binaries requiring windows 7.0.
5075         # Therefore explicitly set the default to XP unless the user has
5076         # set something else on the command line.
5077         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5078         # family. For these cases, configure is free to use any functions
5079         # found in the SDK headers by default. (Alternatively, we could force
5080         # _WIN32_WINNT to 0x0602 in that case.)
5081         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5082             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
5083 #ifdef WINAPI_FAMILY
5084 #include <winapifamily.h>
5085 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5086 #error not desktop
5087 #endif
5088 #endif
5089 EOF
5090         if [ "$pfx" = "" ]; then
5091             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5092             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5093         fi
5094     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5095         eval ${pfx}libc_type=klibc
5096     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5097         eval ${pfx}libc_type=bionic
5098     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5099         eval ${pfx}libc_type=solaris
5100         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5101     fi
5102     check_${pfx}cc <<EOF
5103 #include <time.h>
5104 void *v = localtime_r;
5105 EOF
5106 test "$?" != 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
5107 #include <time.h>
5108 void *v = localtime_r;
5109 EOF
5110
5111 }
5112
5113 probe_libc
5114 test -n "$libc_type" && enable libc_$libc_type
5115 probe_libc host_
5116 test -n "$host_libc_type" && enable host_libc_$host_libc_type
5117
5118 case $libc_type in
5119     bionic)
5120         add_compat strtod.o strtod=avpriv_strtod
5121         ;;
5122 esac
5123
5124 # hacks for compiler/libc/os combinations
5125
5126 if enabled_all tms470 libc_glibc; then
5127     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
5128     add_cppflags -D__USER_LABEL_PREFIX__=
5129     add_cppflags -D__builtin_memset=memset
5130     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
5131     add_cflags   -pds=48    # incompatible redefinition of macro
5132 fi
5133
5134 if enabled_all ccc libc_glibc; then
5135     add_ldflags -Wl,-z,now  # calls to libots crash without this
5136 fi
5137
5138 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5139     add_cppflags '-I\$(SRC_PATH)/compat/float'
5140
5141 esc(){
5142     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
5143 }
5144
5145 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
5146
5147 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5148
5149 set_default libdir
5150 : ${shlibdir_default:="$libdir"}
5151 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5152
5153 set_default $PATHS_LIST
5154 set_default nm
5155
5156 # we need to build at least one lib type
5157 if ! enabled_any static shared; then
5158     cat <<EOF
5159 At least one library type must be built.
5160 Specify --enable-static to build the static libraries or --enable-shared to
5161 build the shared libraries as well. To only build the shared libraries specify
5162 --disable-static in addition to --enable-shared.
5163 EOF
5164     exit 1
5165 fi
5166
5167 die_license_disabled() {
5168     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
5169 }
5170
5171 die_license_disabled_gpl() {
5172     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
5173 }
5174
5175 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
5176 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
5177
5178 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
5179 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
5180
5181 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
5182
5183 disabled optimizations || check_cflags -fomit-frame-pointer
5184
5185 enable_weak_pic() {
5186     disabled pic && return
5187     enable pic
5188     add_cppflags -DPIC
5189     case "$target_os" in
5190     mingw*|cygwin*)
5191         ;;
5192     *)
5193         add_cflags -fPIC
5194         ;;
5195     esac
5196     add_asflags  -fPIC
5197 }
5198
5199 enabled pic && enable_weak_pic
5200
5201 check_cc <<EOF || die "Symbol mangling check failed."
5202 int ff_extern;
5203 EOF
5204 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5205 extern_prefix=${sym%%ff_extern*}
5206
5207 check_cc <<EOF && enable_weak inline_asm
5208 void foo(void) { __asm__ volatile ("" ::); }
5209 EOF
5210
5211 _restrict=
5212 for restrict_keyword in restrict __restrict__ __restrict; do
5213     check_cc <<EOF && _restrict=$restrict_keyword && break
5214 void foo(char * $restrict_keyword p);
5215 EOF
5216 done
5217
5218 check_cc <<EOF && enable pragma_deprecated
5219 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
5220 EOF
5221
5222 check_cc <<EOF && enable attribute_packed
5223 struct { int x; } __attribute__((packed)) x;
5224 EOF
5225
5226 check_cc <<EOF && enable attribute_may_alias
5227 union { int x; } __attribute__((may_alias)) x;
5228 EOF
5229
5230 check_cc <<EOF || die "endian test failed"
5231 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5232 EOF
5233 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5234
5235 if ! enabled ppc64 || enabled bigendian; then
5236     disable vsx
5237 fi
5238
5239 check_gas() {
5240     log "check_gas using '$as' as AS"
5241     # :vararg is used on aarch64, arm and ppc altivec
5242     check_as <<EOF || return 1
5243 .macro m n, y:vararg=0
5244 \n: .int \y
5245 .endm
5246 m x
5247 EOF
5248     # .altmacro is only used in arm asm
5249     ! enabled arm || check_as <<EOF || return 1
5250 .altmacro
5251 EOF
5252     enable gnu_as
5253     return 0
5254 }
5255
5256 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5257     nogas=:
5258     enabled_any arm aarch64 && nogas=die
5259     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5260     as_noop=-v
5261
5262     case $as_type in
5263         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5264         gcc)  gaspp_as_type=gas ;;
5265         *)    gaspp_as_type=$as_type ;;
5266     esac
5267
5268     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5269
5270     test "${as#*gas-preprocessor.pl}" != "$as" ||
5271     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5272         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5273
5274     if ! check_gas ; then
5275         as=${gas:=$as}
5276         check_gas || \
5277             $nogas "GNU assembler not found, install/update gas-preprocessor"
5278     fi
5279
5280     check_as <<EOF && enable as_func
5281 .func test
5282 .endfunc
5283 EOF
5284 fi
5285
5286 check_inline_asm inline_asm_labels '"1:\n"'
5287
5288 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5289
5290 if enabled aarch64; then
5291     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5292     # internal assembler in clang 3.3 does not support this instruction
5293     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5294     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5295
5296     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5297
5298 elif enabled alpha; then
5299
5300     check_cflags -mieee
5301
5302 elif enabled arm; then
5303
5304     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
5305
5306     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
5307 float func(float a, float b){ return a+b; }
5308 EOF
5309
5310     enabled thumb && check_cflags -mthumb || check_cflags -marm
5311
5312     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
5313         enable vfp_args
5314     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5315         enable vfp_args
5316     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5317         case "${cross_prefix:-$cc}" in
5318             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
5319             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
5320 __asm__ (".eabi_attribute 28, 1");
5321 int main(void) { return 0; }
5322 EOF
5323         esac
5324         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5325     fi
5326
5327     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5328     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5329     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5330     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5331     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5332     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5333     enabled setend  && check_insn setend  'setend be'
5334
5335     [ $target_os = linux ] || [ $target_os = android ] ||
5336         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5337             $ARCH_EXT_LIST_ARM
5338
5339     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5340
5341     check_as <<EOF && enable as_dn_directive
5342 ra .dn d0.i16
5343 .unreq ra
5344 EOF
5345     check_as <<EOF && enable as_fpu_directive
5346 .fpu neon
5347 EOF
5348
5349     # llvm's integrated assembler supports .object_arch from llvm 3.5
5350     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
5351 .object_arch armv4
5352 EOF
5353
5354     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5355
5356 elif enabled mips; then
5357
5358     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5359     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5360     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5361
5362     # Enable minimum ISA based on selected options
5363     if enabled mips64; then
5364         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5365         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5366         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5367     else
5368         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5369         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5370         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5371         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5372     fi
5373
5374     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5375     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5376     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
5377     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5378     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5379
5380 elif enabled parisc; then
5381
5382     if enabled gcc; then
5383         case $($cc -dumpversion) in
5384             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5385         esac
5386     fi
5387
5388 elif enabled ppc; then
5389
5390     enable local_aligned_8 local_aligned_16 local_aligned_32
5391
5392     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5393     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5394     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5395     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5396
5397     # AltiVec flags: The FSF version of GCC differs from the Apple version
5398     if enabled altivec; then
5399         check_cflags -maltivec -mabi=altivec &&
5400         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
5401         check_cflags -faltivec
5402
5403         # check if our compiler supports Motorola AltiVec C API
5404         check_cc <<EOF || disable altivec
5405 $inc_altivec_h
5406 int main(void) {
5407     vector signed int v1 = (vector signed int) { 0 };
5408     vector signed int v2 = (vector signed int) { 1 };
5409     v1 = vec_add(v1, v2);
5410     return 0;
5411 }
5412 EOF
5413
5414         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5415     fi
5416
5417     if enabled vsx; then
5418         check_cflags -mvsx &&
5419         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
5420     fi
5421
5422     if enabled power8; then
5423         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
5424     fi
5425
5426 elif enabled x86; then
5427
5428     check_builtin rdtsc    intrin.h   "__rdtsc()"
5429     check_builtin mm_empty mmintrin.h "_mm_empty()"
5430
5431     enable local_aligned_8 local_aligned_16 local_aligned_32
5432
5433     # check whether EBP is available on x86
5434     # As 'i' is stored on the stack, this program will crash
5435     # if the base pointer is used to access it because the
5436     # base pointer is cleared in the inline assembly code.
5437     check_exec_crash <<EOF && enable ebp_available
5438 volatile int i=0;
5439 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5440 return i;
5441 EOF
5442
5443     # check whether EBX is available on x86
5444     check_inline_asm ebx_available '""::"b"(0)' &&
5445         check_inline_asm ebx_available '"":::"%ebx"'
5446
5447     # check whether xmm clobbers are supported
5448     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5449
5450     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5451         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5452
5453     # check whether binutils is new enough to compile SSSE3/MMXEXT
5454     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5455     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5456
5457     if ! disabled_any asm mmx yasm; then
5458         if check_cmd $yasmexe --version; then
5459             enabled x86_64 && yasm_extra="-m amd64"
5460             yasm_debug="-g dwarf2"
5461         elif check_cmd nasm -v; then
5462             yasmexe=nasm
5463             yasm_debug="-g -F dwarf"
5464             if enabled x86_64; then
5465                 case "$objformat" in
5466                     elf)   objformat=elf64 ;;
5467                     win32) objformat=win64 ;;
5468                 esac
5469             fi
5470         fi
5471
5472         YASMFLAGS="-f $objformat $yasm_extra"
5473         enabled pic               && append YASMFLAGS "-DPIC"
5474         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
5475         case "$objformat" in
5476             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
5477         esac
5478
5479         check_yasm "movbe ecx, [5]" && enable yasm ||
5480             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
5481         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
5482         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
5483         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
5484         check_yasm "CPU amdnop" || disable cpunop
5485     fi
5486
5487     case "$cpu" in
5488         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5489             disable fast_clz
5490         ;;
5491     esac
5492
5493 fi
5494
5495 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
5496
5497 check_ldflags -Wl,--as-needed
5498 check_ldflags -Wl,-z,noexecstack
5499
5500 if check_func dlopen && check_func dlsym; then
5501     ldl=
5502 elif check_func dlopen -ldl && check_func dlsym -ldl; then
5503     ldl=-ldl
5504 fi
5505
5506 avisynth_demuxer_extralibs='$ldl'
5507 cuda_extralibs='$ldl'
5508 decklink_outdev_extralibs="$decklink_outdev_extralibs $ldl"
5509 decklink_indev_extralibs="$decklink_indev_extralibs $ldl"
5510 frei0r_filter_extralibs='$ldl'
5511 frei0r_src_filter_extralibs='$ldl'
5512 ladspa_filter_extralibs='$ldl'
5513 nvenc_extralibs='$ldl'
5514 coreimage_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5515 coreimagesrc_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5516
5517 if ! disabled network; then
5518     check_func getaddrinfo $network_extralibs
5519     check_func inet_aton $network_extralibs
5520
5521     check_type netdb.h "struct addrinfo"
5522     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5523     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5524     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5525     check_type poll.h "struct pollfd"
5526     check_type netinet/sctp.h "struct sctp_event_subscribe"
5527     check_struct "sys/socket.h" "struct msghdr" msg_flags
5528     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5529     check_type netinet/in.h "struct sockaddr_in6"
5530     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5531     check_type "sys/types.h sys/socket.h" socklen_t
5532
5533     # Prefer arpa/inet.h over winsock2
5534     if check_header arpa/inet.h ; then
5535         check_func closesocket
5536     elif check_header winsock2.h ; then
5537         check_func_headers winsock2.h closesocket -lws2 &&
5538             network_extralibs="-lws2" ||
5539         { check_func_headers winsock2.h closesocket -lws2_32 &&
5540             network_extralibs="-lws2_32"; } || disable winsock2_h network
5541         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5542
5543         check_type ws2tcpip.h socklen_t
5544         check_type ws2tcpip.h "struct addrinfo"
5545         check_type ws2tcpip.h "struct group_source_req"
5546         check_type ws2tcpip.h "struct ip_mreq_source"
5547         check_type ws2tcpip.h "struct ipv6_mreq"
5548         check_type winsock2.h "struct pollfd"
5549         check_struct winsock2.h "struct sockaddr" sa_len
5550         check_type ws2tcpip.h "struct sockaddr_in6"
5551         check_type ws2tcpip.h "struct sockaddr_storage"
5552     else
5553         disable network
5554     fi
5555 fi
5556
5557 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5558 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5559 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5560 check_builtin sarestart signal.h "SA_RESTART"
5561 check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" -lpthread
5562 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5563 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5564 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5565 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5566
5567 case "$custom_allocator" in
5568     jemalloc)
5569         # jemalloc by default does not use a prefix
5570         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5571     ;;
5572     tcmalloc)
5573         require_pkg_config libtcmalloc gperftools/tcmalloc.h tc_malloc
5574         malloc_prefix=tc_
5575     ;;
5576 esac
5577
5578 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5579 check_func  ${malloc_prefix}memalign            && enable memalign
5580 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5581
5582 check_func  access
5583 check_func_headers stdlib.h arc4random
5584 check_func_headers time.h clock_gettime || { check_func_headers time.h clock_gettime -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
5585 check_func  fcntl
5586 check_func  fork
5587 check_func  gethrtime
5588 check_func  getopt
5589 check_func  getrusage
5590 check_func  gettimeofday
5591 check_func  isatty
5592 check_func  mach_absolute_time
5593 check_func  mkstemp
5594 check_func  mmap
5595 check_func  mprotect
5596 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5597 check_func_headers time.h nanosleep || { check_func_headers time.h nanosleep -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
5598 check_func  sched_getaffinity
5599 check_func  setrlimit
5600 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5601 check_func  strerror_r
5602 check_func  sysconf
5603 check_func  sysctl
5604 check_func  usleep
5605
5606 check_func_headers conio.h kbhit
5607 check_func_headers io.h setmode
5608 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5609 check_func_headers stdlib.h getenv
5610 check_func_headers sys/stat.h lstat
5611
5612 check_func_headers windows.h CoTaskMemFree -lole32
5613 check_func_headers windows.h GetProcessAffinityMask
5614 check_func_headers windows.h GetProcessTimes
5615 check_func_headers windows.h GetSystemTimeAsFileTime
5616 check_func_headers windows.h LoadLibrary
5617 check_func_headers windows.h MapViewOfFile
5618 check_func_headers windows.h PeekNamedPipe
5619 check_func_headers windows.h SetConsoleTextAttribute
5620 check_func_headers windows.h SetConsoleCtrlHandler
5621 check_func_headers windows.h Sleep
5622 check_func_headers windows.h VirtualAlloc
5623 check_struct windows.h "CONDITION_VARIABLE" Ptr
5624 check_func_headers glob.h glob
5625 enabled xlib &&
5626     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5627
5628 check_header AudioToolbox/AudioToolbox.h
5629 check_header direct.h
5630 check_header dirent.h
5631 check_header dlfcn.h
5632 check_header d3d11.h
5633 check_header dxva.h
5634 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5635 check_header io.h
5636 check_header libcrystalhd/libcrystalhd_if.h
5637 check_header mach/mach_time.h
5638 check_header malloc.h
5639 check_header net/udplite.h
5640 check_header poll.h
5641 check_header sys/mman.h
5642 check_header sys/param.h
5643 check_header sys/resource.h
5644 check_header sys/select.h
5645 check_header sys/time.h
5646 check_header sys/un.h
5647 check_header termios.h
5648 check_header unistd.h
5649 check_header valgrind/valgrind.h
5650 check_header vdpau/vdpau.h
5651 check_header vdpau/vdpau_x11.h
5652 check_header VideoDecodeAcceleration/VDADecoder.h
5653 check_header VideoToolbox/VideoToolbox.h
5654 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5655 enabled videotoolbox && check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferColorPrimaries_ITU_R_2020 -framework CoreVideo
5656 check_header windows.h
5657 check_header X11/extensions/XvMClib.h
5658 check_header asm/types.h
5659
5660 # it seems there are versions of clang in some distros that try to use the
5661 # gcc headers, which explodes for stdatomic
5662 # so we also check that atomics actually work here
5663 check_builtin stdatomic_h stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0)"
5664
5665 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
5666 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
5667 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
5668 check_lib "CoreServices/CoreServices.h" UTGetOSTypeFromString "-framework CoreServices"
5669
5670 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5671
5672 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5673 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5674 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5675 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5676 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5677
5678 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
5679 check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
5680 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
5681 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
5682 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5683 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5684 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
5685 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
5686
5687 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5688
5689 check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt
5690
5691 if ! disabled w32threads && ! enabled pthreads; then
5692     check_func_headers "windows.h process.h" _beginthreadex &&
5693         enable w32threads || disable w32threads
5694     if ! enabled w32threads && enabled winrt; then
5695         check_func_headers "windows.h" CreateThread &&
5696             enable w32threads || disable w32threads
5697     fi
5698 fi
5699
5700 # check for some common methods of building with pthread support
5701 # do this before the optional library checks as some of them require pthreads
5702 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5703     enable pthreads
5704     if check_func pthread_join -pthread && check_func pthread_create -pthread; then
5705         add_cflags -pthread
5706         add_extralibs -pthread
5707     elif check_func pthread_join -pthreads && check_func pthread_create -pthreads; then
5708         add_cflags -pthreads
5709         add_extralibs -pthreads
5710     elif check_func pthread_join -ldl -pthread && check_func pthread_create -ldl -pthread; then
5711         add_cflags -ldl -pthread
5712         add_extralibs -ldl -pthread
5713     elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
5714         add_extralibs -lpthreadGC2
5715     elif check_lib pthread.h pthread_join -lpthread && check_lib pthread.h pthread_create -lpthread; then
5716         :
5717     elif ! check_func pthread_join && ! check_func pthread_create; then
5718         disable pthreads
5719     fi
5720     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5721 fi
5722
5723
5724 if enabled pthreads; then
5725   check_func pthread_cancel
5726 fi
5727
5728 enabled pthreads &&
5729     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)"
5730
5731 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
5732 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
5733 disabled  lzma || check_lib2  lzma.h lzma_version_number -llzma || disable lzma
5734
5735 check_lib math.h sin -lm && LIBM="-lm"
5736 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
5737
5738 atan2f_args=2
5739 copysign_args=2
5740 hypot_args=2
5741 ldexpf_args=2
5742 powf_args=2
5743
5744 for func in $MATH_FUNCS; do
5745     eval check_mathfunc $func \${${func}_args:-1}
5746 done
5747
5748 for func in $COMPLEX_FUNCS; do
5749     eval check_complexfunc $func \${${func}_args:-1}
5750 done
5751
5752 # these are off by default, so fail if requested and not available
5753 enabled avfoundation_indev && { check_header_objcc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
5754 enabled avfoundation_indev && { check_lib2 CoreGraphics/CoreGraphics.h CGGetActiveDisplayList -framework CoreGraphics ||
5755                                 check_lib2 ApplicationServices/ApplicationServices.h CGGetActiveDisplayList -framework ApplicationServices; }
5756 enabled cuda              && check_header cuda.h # this is not a dependency
5757 enabled cuvid             && { enabled cuda ||
5758                                die "ERROR: CUVID requires CUDA"; }
5759 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5760 enabled coreimage_filter  && { check_header_objcc QuartzCore/CoreImage.h || disable coreimage_filter; }
5761 enabled coreimagesrc_filter && { check_header_objcc QuartzCore/CoreImage.h || disable coreimagesrc_filter; }
5762 enabled decklink          && { { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; } &&
5763                                { check_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a060100" || die "ERROR: Decklink API version must be >= 10.6.1."; } }
5764 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
5765 enabled gmp               && require2 gmp gmp.h mpz_export -lgmp
5766 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
5767 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads &&
5768                                check_lib2 "dlfcn.h" dlopen -ldl; }
5769 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
5770 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5771 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
5772 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
5773 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
5774 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5775                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
5776                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5777 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
5778 enabled libfdk_aac        && { use_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5779                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5780                                  warn "using libfdk without pkg-config"; } }
5781 flite_libs="-lflite_cmu_time_awb -lflite_cmu_us_awb -lflite_cmu_us_kal -lflite_cmu_us_kal16 -lflite_cmu_us_rms -lflite_cmu_us_slt -lflite_usenglish -lflite_cmulex -lflite"
5782 enabled libflite          && require2 libflite "flite/flite.h" flite_init $flite_libs
5783 enabled fontconfig        && enable libfontconfig
5784 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
5785 enabled libfreetype       && require_libfreetype
5786 enabled libfribidi        && require_pkg_config fribidi fribidi.h fribidi_version_info
5787 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
5788 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5789                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
5790                                done || die "ERROR: libgsm not found"; }
5791 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
5792 enabled libkvazaar        && require_pkg_config "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
5793 enabled libmfx            && require_pkg_config libmfx "mfx/mfxvideo.h" MFXInit
5794 enabled libmodplug        && require_pkg_config libmodplug libmodplug/modplug.h ModPlug_Load
5795 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5796 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
5797 enabled libnpp            && require libnpp npp.h nppGetLibVersion -lnppi -lnppc
5798 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5799 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5800 enabled libopencv         && { check_header opencv2/core/core_c.h &&
5801                                { use_pkg_config opencv opencv2/core/core_c.h cvCreateImageHeader ||
5802                                  require opencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
5803                                require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader; }
5804 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
5805 enabled libopenjpeg       && { { check_lib2 openjpeg-2.1/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5806                                check_lib2 openjpeg-2.1/openjpeg.h opj_version -lopenjp2 ||
5807                                { check_lib2 openjpeg-2.0/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5808                                { check_lib2 openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5809                                { check_lib2 openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5810                                die "ERROR: libopenjpeg not found"; }
5811 enabled libopenmpt        && require_pkg_config "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create
5812 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
5813 enabled libpulse          && require_pkg_config libpulse pulse/pulseaudio.h pa_context_new
5814 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
5815 enabled librubberband     && require_pkg_config "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new
5816 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
5817 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
5818 enabled libsmbclient      && { use_pkg_config smbclient libsmbclient.h smbc_init ||
5819                                require smbclient libsmbclient.h smbc_init -lsmbclient; }
5820 enabled libsnappy         && require snappy snappy-c.h snappy_compress -lsnappy
5821 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr && LIBSOXR="-lsoxr"
5822 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
5823 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
5824 enabled libtesseract      && require_pkg_config tesseract tesseract/capi.h TessBaseAPICreate
5825 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
5826 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
5827                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
5828                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
5829 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
5830 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
5831 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
5832 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
5833
5834 enabled libvpx            && {
5835     enabled libvpx_vp8_decoder && {
5836         use_pkg_config "vpx >= 0.9.1" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
5837             check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
5838                 die "ERROR: libvpx decoder version must be >=0.9.1";
5839     }
5840     enabled libvpx_vp8_encoder && {
5841         use_pkg_config "vpx >= 0.9.7" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
5842             check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
5843                 die "ERROR: libvpx encoder version must be >=0.9.7";
5844     }
5845     enabled libvpx_vp9_decoder && {
5846         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
5847             check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx ||
5848                 disable libvpx_vp9_decoder;
5849     }
5850     enabled libvpx_vp9_encoder && {
5851         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
5852             check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx ||
5853                 disable libvpx_vp9_encoder;
5854     }
5855     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
5856         die "libvpx enabled but no supported decoders found"
5857     fi
5858 }
5859
5860 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
5861 enabled libwebp           && {
5862     enabled libwebp_encoder      && require_pkg_config "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
5863     enabled libwebp_anim_encoder && { use_pkg_config "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit || disable libwebp_anim_encoder; } }
5864 enabled libx264           && { use_pkg_config x264 "stdint.h x264.h" x264_encoder_encode ||
5865                                { require libx264 x264.h x264_encoder_encode -lx264 &&
5866                                  warn "using libx264 without pkg-config"; } } &&
5867                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
5868                                die "ERROR: libx264 must be installed and version must be >= 0.118."; } &&
5869                              { check_cpp_condition x264.h "X264_MPEG2" &&
5870                                enable libx262; }
5871 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
5872                              { check_cpp_condition x265.h "X265_BUILD >= 68" ||
5873                                die "ERROR: libx265 version must be >= 68."; }
5874 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
5875 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
5876 enabled libzimg           && require_pkg_config "zimg >= 2.3.0" zimg.h zimg_get_api_version
5877 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
5878 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi &&
5879                              { check_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
5880                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
5881 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
5882 enabled mmal              && { check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
5883                                 { ! enabled cross_compile && {
5884                                     add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline ;
5885                                     add_extralibs -L/opt/vc/lib/ -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ;
5886                                     check_lib interface/mmal/mmal.h mmal_port_connect ; }
5887                                 check_lib interface/mmal/mmal.h mmal_port_connect ; } ||
5888                                die "ERROR: mmal not found"; }
5889 enabled mmal && check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"
5890
5891 enabled netcdf            && require_pkg_config netcdf netcdf.h nc_inq_libvers
5892 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
5893                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
5894                                die "ERROR: openal not found"; } &&
5895                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
5896                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
5897 enabled opencl            && { check_lib2 OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
5898                                check_lib2 CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
5899                                die "ERROR: opencl not found"; } &&
5900                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
5901                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
5902                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
5903 enabled opengl            && { check_lib GL/glx.h glXGetProcAddress "-lGL" ||
5904                                check_lib2 windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
5905                                check_lib2 OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
5906                                check_lib2 ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
5907                                die "ERROR: opengl not found."
5908                              }
5909 enabled omx_rpi && enable omx
5910 enabled omx               && { check_header OMX_Core.h ||
5911                                 { ! enabled cross_compile && enabled omx_rpi && {
5912                                     add_cflags -isystem/opt/vc/include/IL ; }
5913                                 check_header OMX_Core.h ; } ||
5914                                die "ERROR: OpenMAX IL headers not found"; }
5915 enabled openssl           && { use_pkg_config openssl openssl/ssl.h OPENSSL_init_ssl ||
5916                                use_pkg_config openssl openssl/ssl.h SSL_library_init ||
5917                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
5918                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
5919                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
5920                                die "ERROR: openssl not found"; }
5921 enabled qtkit_indev      && { check_header_objcc QTKit/QTKit.h || disable qtkit_indev; }
5922
5923 # libdc1394 check
5924 if enabled libdc1394; then
5925     { require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new &&
5926         enable libdc1394_2; } ||
5927     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
5928         enable libdc1394_1; } ||
5929     die "ERROR: No version of libdc1394 found "
5930 fi
5931
5932 if enabled gcrypt; then
5933     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
5934     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
5935         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
5936         gcrypt_libs=$("${GCRYPT_CONFIG}" --libs)
5937         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_libs ||
5938             die "ERROR: gcrypt not found"
5939         add_cflags $gcrypt_cflags && add_extralibs $gcrypt_libs
5940     else
5941         require2 gcrypt gcrypt.h gcry_mpi_new -lgcrypt
5942     fi
5943 fi
5944
5945 disabled sdl && disable sdl2
5946 if ! disabled sdl2; then
5947     SDL2_CONFIG="${cross_prefix}sdl2-config"
5948     if check_pkg_config sdl2 SDL_events.h SDL_PollEvent; then
5949         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
5950         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
5951         check_func SDL_Init $sdl2_libs $sdl2_cflags && enable sdl2
5952     else
5953       if "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
5954         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
5955         sdl2_libs=$("${SDL2_CONFIG}" --libs)
5956         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
5957         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
5958         check_func SDL_Init $sdl2_libs $sdl2_cflags && enable sdl2
5959       fi
5960     fi
5961     if test $target_os = "mingw32"; then
5962         sdl2_libs="$sdl2_libs -mconsole"
5963     fi
5964 fi
5965 enabled sdl2 && enable sdl && add_cflags $sdl2_cflags && add_extralibs $sdl2_libs
5966
5967 disabled securetransport || { check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5968     check_lib2 "Security/SecureTransport.h Security/Security.h" "SSLCreateContext SecItemImport" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5969     enable securetransport; }
5970
5971 disabled schannel || { check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
5972                        check_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" && enable schannel && add_extralibs -lsecur32; }
5973
5974 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
5975 enabled makeinfo \
5976     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
5977     && enable makeinfo_html || disable makeinfo_html
5978 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
5979 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
5980 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
5981 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
5982
5983 check_header linux/fb.h
5984 check_header linux/videodev.h
5985 check_header linux/videodev2.h
5986 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5987
5988 check_header sys/videoio.h
5989 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5990
5991 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
5992 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
5993 # w32api 3.12 had it defined wrong
5994 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
5995
5996 check_type "dshow.h" IBaseFilter
5997
5998 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
5999 { check_header dev/bktr/ioctl_meteor.h &&
6000   check_header dev/bktr/ioctl_bt848.h; } ||
6001 { check_header machine/ioctl_meteor.h &&
6002   check_header machine/ioctl_bt848.h; } ||
6003 { check_header dev/video/meteor/ioctl_meteor.h &&
6004   check_header dev/video/bktr/ioctl_bt848.h; } ||
6005 check_header dev/ic/bt8xx.h
6006
6007 check_header sndio.h
6008 if check_struct sys/soundcard.h audio_buf_info bytes; then
6009     enable_safe sys/soundcard.h
6010 else
6011     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
6012     #include <sys/soundcard.h>
6013     audio_buf_info abc;
6014 EOF
6015 fi
6016 check_header soundcard.h
6017
6018 enabled_any alsa_indev alsa_outdev &&
6019     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
6020
6021 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack &&
6022     check_func jack_port_get_latency_range -ljack
6023
6024 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
6025
6026 if enabled libcdio; then
6027     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6028     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6029     die "ERROR: No usable libcdio/cdparanoia found"
6030 fi
6031
6032 enabled xlib &&
6033     check_lib X11/Xlib.h XOpenDisplay -lX11 || disable xlib
6034
6035 if ! disabled libxcb; then
6036     check_pkg_config "xcb >= 1.4" xcb/xcb.h xcb_connect || {
6037         enabled libxcb && die "ERROR: libxcb >= 1.4 not found";
6038     } && enable libxcb
6039
6040 if enabled libxcb; then
6041     disabled libxcb_shm || {
6042         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
6043             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
6044         } && check_header sys/shm.h && enable libxcb_shm; }
6045
6046     disabled libxcb_xfixes || {
6047         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
6048             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
6049         } && enable libxcb_xfixes; }
6050
6051     disabled libxcb_shape || {
6052         check_pkg_config xcb-shape xcb/shape.h xcb_shape_get_rectangles || {
6053             enabled libxcb_shape && die "ERROR: libxcb_shape not found";
6054         } && enable libxcb_shape; }
6055
6056     add_cflags $xcb_cflags $xcb_shm_cflags $xcb_xfixes_cflags $xcb_shape_cflags
6057     add_extralibs $xcb_libs $xcb_shm_libs $xcb_xfixes_libs $xcb_shape_libs
6058 fi
6059 fi
6060
6061 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6062
6063 enabled dxva2api_h &&
6064     check_cc <<EOF && enable dxva2api_cobj
6065 #define _WIN32_WINNT 0x0600
6066 #define COBJMACROS
6067 #include <windows.h>
6068 #include <d3d9.h>
6069 #include <dxva2api.h>
6070 int main(void) { IDirectXVideoDecoder *o = NULL; IDirectXVideoDecoder_Release(o); return 0; }
6071 EOF
6072
6073 enabled vaapi &&
6074     check_lib va/va.h vaInitialize -lva ||
6075     disable vaapi
6076
6077 enabled vaapi &&
6078     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
6079     disable vaapi
6080
6081 if enabled vaapi ; then
6082     enabled xlib &&
6083     check_lib2 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 &&
6084     enable vaapi_x11
6085
6086     check_lib2 "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm &&
6087     enable vaapi_drm
6088 fi
6089
6090 enabled vdpau &&
6091     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
6092     disable vdpau
6093
6094 enabled vdpau && enabled xlib &&
6095     check_lib2 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
6096     enable vdpau_x11
6097
6098 if enabled x86; then
6099     case $target_os in
6100         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6101             ;;
6102         *)
6103             disable cuda cuvid nvenc
6104             ;;
6105     esac
6106 else
6107     disable cuda cuvid nvenc
6108 fi
6109
6110 enabled nvenc &&
6111     check_cc -I$source_path <<EOF || disable nvenc
6112 #include "compat/nvenc/nvEncodeAPI.h"
6113 NV_ENCODE_API_FUNCTION_LIST flist;
6114 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6115 int main(void) { return 0; }
6116 EOF
6117
6118 # Funny iconv installations are not unusual, so check it after all flags have been set
6119 disabled iconv || check_func_headers iconv.h iconv || check_lib2 iconv.h iconv -liconv || disable iconv
6120
6121 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6122
6123 # add some useful compiler flags if supported
6124 check_cflags -Wdeclaration-after-statement
6125 check_cflags -Wall
6126 check_cflags -Wdisabled-optimization
6127 check_cflags -Wpointer-arith
6128 check_cflags -Wredundant-decls
6129 check_cflags -Wwrite-strings
6130 check_cflags -Wtype-limits
6131 check_cflags -Wundef
6132 check_cflags -Wmissing-prototypes
6133 check_cflags -Wno-pointer-to-int-cast
6134 check_cflags -Wstrict-prototypes
6135 check_cflags -Wempty-body
6136 enabled extra_warnings && check_cflags -Winline
6137 enabled extra_warnings && check_cflags -Wcast-qual
6138
6139 check_disable_warning(){
6140     warning_flag=-W${1#-Wno-}
6141     test_cflags $warning_flag && add_cflags $1
6142 }
6143
6144 check_disable_warning -Wno-parentheses
6145 check_disable_warning -Wno-switch
6146 check_disable_warning -Wno-format-zero-length
6147 check_disable_warning -Wno-pointer-sign
6148 check_disable_warning -Wno-unused-const-variable
6149
6150 # add some linker flags
6151 check_ldflags -Wl,--warn-common
6152 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6153 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
6154 enabled rpath && add_ldlibflags -Wl,-rpath,$libdir
6155 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6156
6157 # add some strip flags
6158 # -wN '..@*' is more selective than -x, but not available everywhere.
6159 check_stripflags -wN \'..@*\' || check_stripflags -x
6160
6161 enabled neon_clobber_test &&
6162     check_ldflags -Wl,--wrap,avcodec_open2              \
6163                   -Wl,--wrap,avcodec_decode_audio4      \
6164                   -Wl,--wrap,avcodec_decode_video2      \
6165                   -Wl,--wrap,avcodec_decode_subtitle2   \
6166                   -Wl,--wrap,avcodec_encode_audio2      \
6167                   -Wl,--wrap,avcodec_encode_video2      \
6168                   -Wl,--wrap,avcodec_send_packet        \
6169                   -Wl,--wrap,avcodec_receive_frame      \
6170                   -Wl,--wrap,avcodec_send_frame         \
6171                   -Wl,--wrap,avcodec_receive_packet     \
6172                   -Wl,--wrap,avcodec_encode_subtitle    \
6173                   -Wl,--wrap,swr_convert                \
6174                   -Wl,--wrap,avresample_convert ||
6175     disable neon_clobber_test
6176
6177 enabled xmm_clobber_test &&
6178     check_ldflags -Wl,--wrap,avcodec_open2              \
6179                   -Wl,--wrap,avcodec_decode_audio4      \
6180                   -Wl,--wrap,avcodec_decode_video2      \
6181                   -Wl,--wrap,avcodec_decode_subtitle2   \
6182                   -Wl,--wrap,avcodec_encode_audio2      \
6183                   -Wl,--wrap,avcodec_encode_video2      \
6184                   -Wl,--wrap,avcodec_encode_subtitle    \
6185                   -Wl,--wrap,avcodec_send_packet        \
6186                   -Wl,--wrap,avcodec_receive_frame      \
6187                   -Wl,--wrap,avcodec_send_frame         \
6188                   -Wl,--wrap,avcodec_receive_packet     \
6189                   -Wl,--wrap,swr_convert                \
6190                   -Wl,--wrap,avresample_convert         \
6191                   -Wl,--wrap,sws_scale ||
6192     disable xmm_clobber_test
6193
6194 check_ld "cc" <<EOF && enable proper_dce
6195 extern const int array[512];
6196 static inline int func(void) { return array[0]; }
6197 int main(void) { return 0; }
6198 EOF
6199
6200 if enabled proper_dce; then
6201     echo "X { local: *; };" > $TMPV
6202     if test_ldflags -Wl,${version_script},$TMPV; then
6203         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6204         check_cc <<EOF && enable symver_asm_label
6205 void ff_foo(void) __asm__ ("av_foo@VERSION");
6206 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6207 EOF
6208         check_cc <<EOF && enable symver_gnu_asm
6209 __asm__(".symver ff_foo,av_foo@VERSION");
6210 void ff_foo(void) {}
6211 EOF
6212     fi
6213 fi
6214
6215 if [ -z "$optflags" ]; then
6216     if enabled small; then
6217         optflags=$cflags_size
6218     elif enabled optimizations; then
6219         optflags=$cflags_speed
6220     else
6221         optflags=$cflags_noopt
6222     fi
6223 fi
6224
6225 check_optflags(){
6226     check_cflags "$@"
6227     enabled lto && check_ldflags "$@"
6228 }
6229
6230
6231 if enabled lto; then
6232     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6233     check_cflags  -flto
6234     check_ldflags -flto $cpuflags
6235     disable inline_asm_direct_symbol_refs
6236 fi
6237
6238 check_optflags $optflags
6239 check_optflags -fno-math-errno
6240 check_optflags -fno-signed-zeros
6241
6242 enabled ftrapv && check_cflags -ftrapv
6243
6244 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6245 int x;
6246 EOF
6247
6248
6249 if enabled icc; then
6250     # Just warnings, no remarks
6251     check_cflags -w1
6252     # -wd: Disable following warnings
6253     # 144, 167, 556: -Wno-pointer-sign
6254     # 188: enumerated type mixed with another type
6255     # 1292: attribute "foo" ignored
6256     # 1419: external declaration in primary source file
6257     # 10006: ignoring unknown option -fno-signed-zeros
6258     # 10148: ignoring unknown option -Wno-parentheses
6259     # 10156: ignoring option '-W'; no argument required
6260     # 13200: No EMMS instruction before call to function
6261     # 13203: No EMMS instruction before return from function
6262     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6263     # 11030: Warning unknown option --as-needed
6264     # 10156: ignoring option '-export'; no argument required
6265     check_ldflags -wd10156,11030
6266     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6267     enable ebp_available
6268     # The test above does not test linking
6269     enabled lto && disable symver_asm_label
6270     if enabled x86_32; then
6271         icc_version=$($cc -dumpversion)
6272         test ${icc_version%%.*} -ge 11 &&
6273             check_cflags -falign-stack=maintain-16-byte ||
6274             disable aligned_stack
6275     fi
6276 elif enabled ccc; then
6277     # disable some annoying warnings
6278     add_cflags -msg_disable bitnotint
6279     add_cflags -msg_disable mixfuncvoid
6280     add_cflags -msg_disable nonstandcast
6281     add_cflags -msg_disable unsupieee
6282 elif enabled gcc; then
6283     check_optflags -fno-tree-vectorize
6284     check_cflags -Werror=format-security
6285     check_cflags -Werror=implicit-function-declaration
6286     check_cflags -Werror=missing-prototypes
6287     check_cflags -Werror=return-type
6288     check_cflags -Werror=vla
6289     check_cflags -Wformat
6290     check_cflags -fdiagnostics-color=auto
6291     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6292 elif enabled llvm_gcc; then
6293     check_cflags -mllvm -stack-alignment=16
6294 elif enabled clang; then
6295     check_cflags -mllvm -stack-alignment=16
6296     check_cflags -mstack-alignment=16
6297     check_cflags -Qunused-arguments
6298     check_cflags -Werror=implicit-function-declaration
6299     check_cflags -Werror=missing-prototypes
6300     check_cflags -Werror=return-type
6301 elif enabled cparser; then
6302     add_cflags -Wno-missing-variable-declarations
6303     add_cflags -Wno-empty-statement
6304 elif enabled armcc; then
6305     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6306     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6307     # 2523: use of inline assembly is deprecated
6308     add_cflags -W${armcc_opt},--diag_suppress=2523
6309     add_cflags -W${armcc_opt},--diag_suppress=1207
6310     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6311     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6312     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6313     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6314 elif enabled tms470; then
6315     add_cflags -pds=824 -pds=837
6316     disable inline_asm
6317 elif enabled pathscale; then
6318     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6319 elif enabled_any msvc icl; then
6320     enabled x86_32 && disable aligned_stack
6321     enabled_all x86_32 debug && add_cflags -Oy-
6322     enabled debug && add_ldflags -debug
6323     enable pragma_deprecated
6324     if enabled icl; then
6325         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6326         # (correctly) on icl 13.x.
6327         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6328             add_cflags -Qansi-alias
6329         # Some inline asm is not compilable in debug
6330         if enabled debug; then
6331             disable ebp_available
6332             disable ebx_available
6333         fi
6334     fi
6335     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6336     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
6337     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6338     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6339     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6340     # MSVC 2013 and newer can handle it fine.
6341     # If this declspec fails, force including stdlib.h before the restrict redefinition
6342     # happens in config.h.
6343     if [ $_restrict != restrict ]; then
6344         check_cc <<EOF || add_cflags -FIstdlib.h
6345 __declspec($_restrict) void* foo(int);
6346 EOF
6347     fi
6348     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6349     # Issue has been fixed in MSVC v19.00.24218.
6350     check_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6351         check_cflags -d2SSAOptimizer-
6352     # enable utf-8 source processing on VS2015 U2 and newer
6353     check_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6354         add_cflags -utf-8
6355 fi
6356
6357 for pfx in "" host_; do
6358     varname=${pfx%_}cc_type
6359     eval "type=\$$varname"
6360     if [ $type = "msvc" ]; then
6361         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6362 static inline int foo(int a) { return a; }
6363 EOF
6364     fi
6365 done
6366
6367 case $as_type in
6368     clang)
6369         add_asflags -Qunused-arguments
6370     ;;
6371 esac
6372
6373 case $ld_type in
6374     clang)
6375         check_ldflags -Qunused-arguments
6376     ;;
6377 esac
6378
6379 case $target_os in
6380     osf1)
6381         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
6382     ;;
6383     plan9)
6384         add_cppflags -Dmain=plan9_main
6385     ;;
6386 esac
6387
6388 enable frame_thread_encoder
6389
6390 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6391
6392 check_deps $CONFIG_LIST       \
6393            $CONFIG_EXTRA      \
6394            $HAVE_LIST         \
6395            $ALL_COMPONENTS    \
6396
6397 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"
6398
6399
6400 if test $target_os = "haiku"; then
6401     disable memalign
6402     disable posix_memalign
6403 fi
6404
6405 enabled_all dxva2 dxva2api_cobj CoTaskMemFree &&
6406     prepend ffmpeg_libs $($ldflags_filter "-lole32") &&
6407     enable dxva2_lib
6408
6409 # add_dep lib dep
6410 # -> enable ${lib}_deps_${dep}
6411 # -> add $dep to ${lib}_deps only once
6412 add_dep() {
6413     lib=$1
6414     dep=$2
6415     enabled "${lib}_deps_${dep}" && return 0
6416     enable  "${lib}_deps_${dep}"
6417     prepend "${lib}_deps" $dep
6418 }
6419
6420 # merge deps lib components
6421 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
6422 merge_deps() {
6423     lib=$1
6424     shift
6425     for comp in $*; do
6426         enabled $comp || continue
6427         eval "dep=\"\$${comp}_deps\""
6428         for d in $dep; do
6429             add_dep $lib $d
6430         done
6431     done
6432 }
6433
6434 merge_deps libavfilter $FILTER_LIST
6435
6436 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6437
6438 for thread in $THREADS_LIST; do
6439     if enabled $thread; then
6440         test -n "$thread_type" &&
6441             die "ERROR: Only one thread type must be selected." ||
6442             thread_type="$thread"
6443     fi
6444 done
6445
6446 if disabled stdatomic_h; then
6447     if enabled atomics_gcc; then
6448         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6449     elif enabled atomics_win32; then
6450         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6451     elif enabled atomics_suncc; then
6452         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6453     elif enabled pthreads; then
6454         add_compat atomics/pthread/stdatomic.o
6455         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6456     else
6457         enabled threads && die "Threading is enabled, but no atomics are available"
6458         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6459     fi
6460 fi
6461
6462 # Check if requested libraries were found.
6463 for lib in $AUTODETECT_LIBS; do
6464     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6465 done
6466
6467 enabled zlib && add_cppflags -DZLIB_CONST
6468
6469 # conditional library dependencies, in linking order
6470 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6471 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6472 enabled aresample_filter    && prepend avfilter_deps "swresample"
6473 enabled asyncts_filter      && prepend avfilter_deps "avresample"
6474 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6475 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6476 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6477 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6478 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6479 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6480 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6481 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6482 enabled pan_filter          && prepend avfilter_deps "swresample"
6483 enabled pp_filter           && prepend avfilter_deps "postproc"
6484 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6485 enabled resample_filter && prepend avfilter_deps "avresample"
6486 enabled sab_filter          && prepend avfilter_deps "swscale"
6487 enabled scale_filter    && prepend avfilter_deps "swscale"
6488 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6489 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6490 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6491 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6492 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6493 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6494 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6495 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6496 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6497
6498 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6499
6500 enabled opus_decoder    && prepend avcodec_deps "swresample"
6501
6502 expand_deps(){
6503     lib_deps=${1}_deps
6504     eval "deps=\$$lib_deps"
6505     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6506     unique $lib_deps
6507 }
6508
6509 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6510 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6511
6512 map 'expand_deps $v' $LIBRARY_LIST
6513
6514 echo "install prefix            $prefix"
6515 echo "source path               $source_path"
6516 echo "C compiler                $cc"
6517 echo "C library                 $libc_type"
6518 if test "$host_cc" != "$cc"; then
6519     echo "host C compiler           $host_cc"
6520     echo "host C library            $host_libc_type"
6521 fi
6522 echo "ARCH                      $arch ($cpu)"
6523 if test "$build_suffix" != ""; then
6524     echo "build suffix              $build_suffix"
6525 fi
6526 if test "$progs_suffix" != ""; then
6527     echo "progs suffix              $progs_suffix"
6528 fi
6529 if test "$extra_version" != ""; then
6530     echo "version string suffix     $extra_version"
6531 fi
6532 echo "big-endian                ${bigendian-no}"
6533 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6534 if enabled x86; then
6535     echo "${yasmexe}                      ${yasm-no}"
6536     echo "MMX enabled               ${mmx-no}"
6537     echo "MMXEXT enabled            ${mmxext-no}"
6538     echo "3DNow! enabled            ${amd3dnow-no}"
6539     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6540     echo "SSE enabled               ${sse-no}"
6541     echo "SSSE3 enabled             ${ssse3-no}"
6542     echo "AESNI enabled             ${aesni-no}"
6543     echo "AVX enabled               ${avx-no}"
6544     echo "XOP enabled               ${xop-no}"
6545     echo "FMA3 enabled              ${fma3-no}"
6546     echo "FMA4 enabled              ${fma4-no}"
6547     echo "i686 features enabled     ${i686-no}"
6548     echo "CMOV is fast              ${fast_cmov-no}"
6549     echo "EBX available             ${ebx_available-no}"
6550     echo "EBP available             ${ebp_available-no}"
6551 fi
6552 if enabled aarch64; then
6553     echo "NEON enabled              ${neon-no}"
6554     echo "VFP enabled               ${vfp-no}"
6555 fi
6556 if enabled arm; then
6557     echo "ARMv5TE enabled           ${armv5te-no}"
6558     echo "ARMv6 enabled             ${armv6-no}"
6559     echo "ARMv6T2 enabled           ${armv6t2-no}"
6560     echo "VFP enabled               ${vfp-no}"
6561     echo "NEON enabled              ${neon-no}"
6562     echo "THUMB enabled             ${thumb-no}"
6563 fi
6564 if enabled mips; then
6565     echo "MIPS FPU enabled          ${mipsfpu-no}"
6566     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6567     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6568     echo "MIPS MSA enabled          ${msa-no}"
6569     echo "LOONGSON MMI enabled      ${mmi-no}"
6570 fi
6571 if enabled ppc; then
6572     echo "AltiVec enabled           ${altivec-no}"
6573     echo "VSX enabled               ${vsx-no}"
6574     echo "POWER8 enabled            ${power8-no}"
6575     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6576     echo "dcbzl available           ${dcbzl-no}"
6577 fi
6578 echo "debug symbols             ${debug-no}"
6579 echo "strip symbols             ${stripping-no}"
6580 echo "optimize for size         ${small-no}"
6581 echo "optimizations             ${optimizations-no}"
6582 echo "static                    ${static-no}"
6583 echo "shared                    ${shared-no}"
6584 echo "postprocessing support    ${postproc-no}"
6585 echo "new filter support        ${avfilter-no}"
6586 echo "network support           ${network-no}"
6587 echo "threading support         ${thread_type-no}"
6588 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6589 echo "SDL2 support              ${sdl2-no}"
6590 echo "opencl enabled            ${opencl-no}"
6591 echo "JNI support               ${jni-no}"
6592 echo "texi2html enabled         ${texi2html-no}"
6593 echo "perl enabled              ${perl-no}"
6594 echo "pod2man enabled           ${pod2man-no}"
6595 echo "makeinfo enabled          ${makeinfo-no}"
6596 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6597 test -n "$random_seed" &&
6598     echo "random seed               ${random_seed}"
6599 echo
6600
6601 echo "Enabled programs:"
6602 print_enabled '' $PROGRAM_LIST | print_in_columns
6603 echo
6604
6605 echo "External libraries:"
6606 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_in_columns
6607 echo
6608
6609 echo "External libraries providing hardware acceleration:"
6610 print_enabled '' $HWACCEL_LIBRARY_LIST | print_in_columns
6611 echo
6612
6613 echo "Libraries:"
6614 print_enabled '' $LIBRARY_LIST | print_in_columns
6615 echo
6616
6617 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6618     echo "Enabled ${type}s:"
6619     eval list=\$$(toupper $type)_LIST
6620     print_enabled '_*' $list | print_in_columns
6621     echo
6622 done
6623
6624 license="LGPL version 2.1 or later"
6625 if enabled nonfree; then
6626     license="nonfree and unredistributable"
6627 elif enabled gplv3; then
6628     license="GPL version 3 or later"
6629 elif enabled lgplv3; then
6630     license="LGPL version 3 or later"
6631 elif enabled gpl; then
6632     license="GPL version 2 or later"
6633 fi
6634
6635 echo "License: $license"
6636
6637 echo "Creating config.mak, config.h, and doc/config.texi..."
6638
6639 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6640
6641 enabled stripping || strip="echo skipping strip"
6642
6643 config_files="$TMPH config.mak doc/config.texi"
6644
6645 cat > config.mak <<EOF
6646 # Automatically generated by configure - do not modify!
6647 ifndef FFMPEG_CONFIG_MAK
6648 FFMPEG_CONFIG_MAK=1
6649 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6650 prefix=$prefix
6651 LIBDIR=\$(DESTDIR)$libdir
6652 SHLIBDIR=\$(DESTDIR)$shlibdir
6653 INCDIR=\$(DESTDIR)$incdir
6654 BINDIR=\$(DESTDIR)$bindir
6655 DATADIR=\$(DESTDIR)$datadir
6656 DOCDIR=\$(DESTDIR)$docdir
6657 MANDIR=\$(DESTDIR)$mandir
6658 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6659 INSTALL_NAME_DIR=$install_name_dir
6660 SRC_PATH=$source_path
6661 SRC_LINK=$source_link
6662 ifndef MAIN_MAKEFILE
6663 SRC_PATH:=\$(SRC_PATH:.%=..%)
6664 endif
6665 CC_IDENT=$cc_ident
6666 ARCH=$arch
6667 INTRINSICS=$intrinsics
6668 CC=$cc
6669 CXX=$cxx
6670 AS=$as
6671 OBJCC=$objcc
6672 LD=$ld
6673 DEPCC=$dep_cc
6674 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6675 DEPAS=$as
6676 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6677 YASM=$yasmexe
6678 DEPYASM=$yasmexe
6679 AR=$ar
6680 ARFLAGS=$arflags
6681 AR_O=$ar_o
6682 RANLIB=$ranlib
6683 STRIP=$strip
6684 CP=cp -p
6685 LN_S=$ln_s
6686 CPPFLAGS=$CPPFLAGS
6687 CFLAGS=$CFLAGS
6688 CXXFLAGS=$CXXFLAGS
6689 OBJCFLAGS=$OBJCFLAGS
6690 ASFLAGS=$ASFLAGS
6691 AS_C=$AS_C
6692 AS_O=$AS_O
6693 OBJCC_C=$OBJCC_C
6694 OBJCC_E=$OBJCC_E
6695 OBJCC_O=$OBJCC_O
6696 CC_C=$CC_C
6697 CC_E=$CC_E
6698 CC_O=$CC_O
6699 CXX_C=$CXX_C
6700 CXX_O=$CXX_O
6701 LD_O=$LD_O
6702 LD_LIB=$LD_LIB
6703 LD_PATH=$LD_PATH
6704 DLLTOOL=$dlltool
6705 WINDRES=$windres
6706 DEPWINDRES=$dep_cc
6707 DOXYGEN=$doxygen
6708 LDFLAGS=$LDFLAGS
6709 LDEXEFLAGS=$LDEXEFLAGS
6710 LDLIBFLAGS=$LDLIBFLAGS
6711 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
6712 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
6713 YASMFLAGS=$YASMFLAGS
6714 BUILDSUF=$build_suffix
6715 PROGSSUF=$progs_suffix
6716 FULLNAME=$FULLNAME
6717 LIBPREF=$LIBPREF
6718 LIBSUF=$LIBSUF
6719 LIBNAME=$LIBNAME
6720 SLIBPREF=$SLIBPREF
6721 SLIBSUF=$SLIBSUF
6722 EXESUF=$EXESUF
6723 EXTRA_VERSION=$extra_version
6724 CCDEP=$CCDEP
6725 CXXDEP=$CXXDEP
6726 CCDEP_FLAGS=$CCDEP_FLAGS
6727 ASDEP=$ASDEP
6728 ASDEP_FLAGS=$ASDEP_FLAGS
6729 CC_DEPFLAGS=$CC_DEPFLAGS
6730 AS_DEPFLAGS=$AS_DEPFLAGS
6731 HOSTCC=$host_cc
6732 HOSTLD=$host_ld
6733 HOSTCFLAGS=$host_cflags
6734 HOSTCPPFLAGS=$host_cppflags
6735 HOSTEXESUF=$HOSTEXESUF
6736 HOSTLDFLAGS=$host_ldflags
6737 HOSTLIBS=$host_libs
6738 DEPHOSTCC=$host_cc
6739 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
6740 HOSTCCDEP=$HOSTCCDEP
6741 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
6742 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
6743 HOSTCC_C=$HOSTCC_C
6744 HOSTCC_O=$HOSTCC_O
6745 HOSTLD_O=$HOSTLD_O
6746 TARGET_EXEC=$target_exec $target_exec_args
6747 TARGET_PATH=$target_path
6748 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
6749 CFLAGS-ffplay=${sdl2_cflags}
6750 ZLIB=$($ldflags_filter -lz)
6751 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
6752 EXTRALIBS=$extralibs
6753 COMPAT_OBJS=$compat_objs
6754 EXEOBJS=$exeobjs
6755 INSTALL=$install
6756 LIBTARGET=${LIBTARGET}
6757 SLIBNAME=${SLIBNAME}
6758 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
6759 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
6760 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
6761 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
6762 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
6763 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
6764 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
6765 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
6766 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
6767 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
6768 NOREDZONE_FLAGS=$noredzone_flags
6769 EOF
6770
6771 get_version(){
6772     lcname=lib${1}
6773     name=$(toupper $lcname)
6774     file=$source_path/$lcname/version.h
6775     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
6776     enabled raise_major && eval ${name}_VERSION_MAJOR=$((${name}_VERSION_MAJOR+100))
6777     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
6778     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
6779     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
6780     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
6781 }
6782
6783 map 'get_version $v' $LIBRARY_LIST
6784
6785 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> config.mak' $LIBRARY_LIST
6786
6787 print_program_libs(){
6788     eval "program_libs=\$${1}_libs"
6789     eval echo "LIBS-${1}=${program_libs}" >> config.mak
6790 }
6791
6792 map 'print_program_libs $v' $PROGRAM_LIST
6793
6794 cat > $TMPH <<EOF
6795 /* Automatically generated by configure - do not modify! */
6796 #ifndef FFMPEG_CONFIG_H
6797 #define FFMPEG_CONFIG_H
6798 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
6799 #define FFMPEG_LICENSE "$(c_escape $license)"
6800 #define CONFIG_THIS_YEAR 2017
6801 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
6802 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
6803 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
6804 #define av_restrict $_restrict
6805 #define EXTERN_PREFIX "${extern_prefix}"
6806 #define EXTERN_ASM ${extern_prefix}
6807 #define BUILDSUF "$build_suffix"
6808 #define SLIBSUF "$SLIBSUF"
6809 #define HAVE_MMX2 HAVE_MMXEXT
6810 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
6811 EOF
6812
6813 test -n "$assert_level" &&
6814     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
6815
6816 test -n "$malloc_prefix" &&
6817     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
6818
6819 if enabled yasm; then
6820     append config_files $TMPASM
6821     printf '' >$TMPASM
6822 fi
6823
6824 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
6825
6826
6827 mkdir -p doc
6828 mkdir -p tests
6829 mkdir -p tests/api
6830 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
6831
6832 print_config ARCH_   "$config_files" $ARCH_LIST
6833 print_config HAVE_   "$config_files" $HAVE_LIST
6834 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
6835                                      $CONFIG_EXTRA      \
6836                                      $ALL_COMPONENTS    \
6837
6838 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
6839 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
6840
6841 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
6842 cp_if_changed $TMPH config.h
6843 touch .config
6844
6845 enabled yasm && cp_if_changed $TMPASM config.asm
6846
6847 cat > $TMPH <<EOF
6848 /* Generated by ffconf */
6849 #ifndef AVUTIL_AVCONFIG_H
6850 #define AVUTIL_AVCONFIG_H
6851 EOF
6852
6853 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
6854
6855 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
6856
6857 cp_if_changed $TMPH libavutil/avconfig.h
6858
6859 if test -n "$WARNINGS"; then
6860     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
6861     enabled fatal_warnings && exit 1
6862 fi
6863
6864 # generate the lists of enabled components
6865 print_enabled_components(){
6866     file=$1
6867     struct_name=$2
6868     name=$3
6869     shift 3
6870     echo "static const $struct_name *$name[] = {" > $TMPH
6871     for c in $*; do
6872         enabled $c && printf "    &ff_%s,\n" $c >> $TMPH
6873     done
6874     echo "    NULL };" >> $TMPH
6875     cp_if_changed $TMPH $file
6876 }
6877
6878 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
6879 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
6880
6881 # build pkg-config files
6882
6883 lib_version(){
6884     eval printf "\"lib${1}${build_suffix} >= \$LIB$(toupper ${1})_VERSION, \""
6885 }
6886
6887 pkgconfig_generate(){
6888     name=$1
6889     shortname=${name#lib}${build_suffix}
6890     comment=$2
6891     version=$3
6892     libs=$4
6893     requires=$(map 'lib_version $v' $(eval echo \$${name#lib}_deps))
6894     requires=${requires%, }
6895     enabled ${name#lib} || return 0
6896     mkdir -p $name
6897     cat <<EOF > $name/$name${build_suffix}.pc
6898 prefix=$prefix
6899 exec_prefix=\${prefix}
6900 libdir=$libdir
6901 includedir=$incdir
6902
6903 Name: $name
6904 Description: $comment
6905 Version: $version
6906 Requires: $(enabled shared || echo $requires)
6907 Requires.private: $(enabled shared && echo $requires)
6908 Conflicts:
6909 Libs: -L\${libdir} $(enabled rpath && echo "-Wl,-rpath,\${libdir}") -l${shortname} $(enabled shared || echo $libs)
6910 Libs.private: $(enabled shared && echo $libs)
6911 Cflags: -I\${includedir}
6912 EOF
6913
6914 mkdir -p doc/examples/pc-uninstalled
6915 includedir=${source_path}
6916 [ "$includedir" = . ] && includedir="\${pcfiledir}/../../.."
6917     cat <<EOF > doc/examples/pc-uninstalled/${name}-uninstalled.pc
6918 prefix=
6919 exec_prefix=
6920 libdir=\${pcfiledir}/../../../$name
6921 includedir=${includedir}
6922
6923 Name: $name
6924 Description: $comment
6925 Version: $version
6926 Requires: $requires
6927 Conflicts:
6928 Libs: -L\${libdir} -Wl,-rpath,\${libdir} -l${shortname} $(enabled shared || echo $libs)
6929 Cflags: -I\${includedir}
6930 EOF
6931 }
6932
6933 pkgconfig_generate libavutil     "FFmpeg utility library"               "$LIBAVUTIL_VERSION"     "$LIBRT $LIBM"
6934 pkgconfig_generate libavcodec    "FFmpeg codec library"                 "$LIBAVCODEC_VERSION"    "$extralibs"
6935 pkgconfig_generate libavformat   "FFmpeg container format library"      "$LIBAVFORMAT_VERSION"   "$extralibs"
6936 pkgconfig_generate libavdevice   "FFmpeg device handling library"       "$LIBAVDEVICE_VERSION"   "$extralibs"
6937 pkgconfig_generate libavfilter   "FFmpeg audio/video filtering library" "$LIBAVFILTER_VERSION"   "$extralibs"
6938 pkgconfig_generate libpostproc   "FFmpeg postprocessing library"        "$LIBPOSTPROC_VERSION"   ""
6939 pkgconfig_generate libavresample "Libav audio resampling library"       "$LIBAVRESAMPLE_VERSION" "$LIBM"
6940 pkgconfig_generate libswscale    "FFmpeg image rescaling library"       "$LIBSWSCALE_VERSION"    "$LIBM"
6941 pkgconfig_generate libswresample "FFmpeg audio resampling library"      "$LIBSWRESAMPLE_VERSION" "$LIBM $LIBSOXR"