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

   1 #!/bin/sh
   2 #
   3 # FFmpeg configure script
   4 #
   5 # Copyright (c) 2000-2002 Fabrice Bellard
   6 # Copyright (c) 2005-2008 Diego Biurrun
   7 # Copyright (c) 2005-2008 Mans Rullgard
   8 #
   9
  10 # Prevent locale nonsense from breaking basic text processing.
  11 LC_ALL=C
  12 export LC_ALL
  13
  14 # make sure we are running under a compatible shell
  15 # try to make this part work with most shells
  16
  17 try_exec(){
  18     echo "Trying shell $1"
  19     type "$1" > /dev/null 2>&1 && exec "$@"
  20 }
  21
  22 unset foo
  23 (: ${foo%%bar}) 2> /dev/null
  24 E1="$?"
  25
  26 (: ${foo?}) 2> /dev/null
  27 E2="$?"
  28
  29 if test "$E1" != 0 || test "$E2" = 0; then
  30     echo "Broken shell detected.  Trying alternatives."
  31     export FF_CONF_EXEC
  32     if test "0$FF_CONF_EXEC" -lt 1; then
  33         FF_CONF_EXEC=1
  34         try_exec bash "$0" "$@"
  35     fi
  36     if test "0$FF_CONF_EXEC" -lt 2; then
  37         FF_CONF_EXEC=2
  38         try_exec ksh "$0" "$@"
  39     fi
  40     if test "0$FF_CONF_EXEC" -lt 3; then
  41         FF_CONF_EXEC=3
  42         try_exec /usr/xpg4/bin/sh "$0" "$@"
  43     fi
  44     echo "No compatible shell script interpreter found."
  45     echo "This configure script requires a POSIX-compatible shell"
  46     echo "such as bash or ksh."
  47     echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
  48     echo "Instead, install a working POSIX-compatible shell."
  49     echo "Disabling this configure test will create a broken FFmpeg."
  50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
  51         echo "This bash version ($BASH_VERSION) is broken on your platform."
  52         echo "Upgrade to a later version if available."
  53     fi
  54     exit 1
  55 fi
  56
  57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
  58
  59 show_help(){
  60     cat <<EOF
  61 Usage: configure [options]
  62 Options: [defaults in brackets after descriptions]
  63
  64 Help options:
  65   --help                   print this message
  66   --list-decoders          show all available decoders
  67   --list-encoders          show all available encoders
  68   --list-hwaccels          show all available hardware accelerators
  69   --list-demuxers          show all available demuxers
  70   --list-muxers            show all available muxers
  71   --list-parsers           show all available parsers
  72   --list-protocols         show all available protocols
  73   --list-bsfs              show all available bitstream filters
  74   --list-indevs            show all available input devices
  75   --list-outdevs           show all available output devices
  76   --list-filters           show all available filters
  77
  78 Standard options:
  79   --logfile=FILE           log tests and output to FILE [config.log]
  80   --disable-logging        do not log configure debug information
  81   --fatal-warnings         fail if any configure warning is generated
  82   --prefix=PREFIX          install in PREFIX [$prefix]
  83   --bindir=DIR             install binaries in DIR [PREFIX/bin]
  84   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
  85   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
  86   --libdir=DIR             install libs in DIR [PREFIX/lib]
  87   --shlibdir=DIR           install shared libs in DIR [LIBDIR]
  88   --incdir=DIR             install includes in DIR [PREFIX/include]
  89   --mandir=DIR             install man page in DIR [PREFIX/share/man]
  90   --pkgconfigdir=DIR       install pkg-config files in DIR [LIBDIR/pkgconfig]
  91   --enable-rpath           use rpath to allow installing libraries in paths
  92                            not part of the dynamic linker search path
  93                            use rpath when linking programs [USE WITH CARE]
  94   --install-name-dir=DIR   Darwin directory name for installed targets
  95
  96 Licensing options:
  97   --enable-gpl             allow use of GPL code, the resulting libs
  98                            and binaries will be under GPL [no]
  99   --enable-version3        upgrade (L)GPL to version 3 [no]
 100   --enable-nonfree         allow use of nonfree code, the resulting libs
 101                            and binaries will be unredistributable [no]
 102
 103 Configuration options:
 104   --disable-static         do not build static libraries [no]
 105   --enable-shared          build shared libraries [no]
 106   --enable-small           optimize for size instead of speed
 107   --disable-runtime-cpudetect disable detecting cpu capabilities at runtime (smaller binary)
 108   --enable-gray            enable full grayscale support (slower color)
 109   --disable-swscale-alpha  disable alpha channel support in swscale
 110   --disable-all            disable building components, libraries and programs
 111   --enable-raise-major     increase major version numbers in sonames [no]
 112
 113 Program options:
 114   --disable-programs       do not build command line programs
 115   --disable-ffmpeg         disable ffmpeg build
 116   --disable-ffplay         disable ffplay build
 117   --disable-ffprobe        disable ffprobe build
 118   --disable-ffserver       disable ffserver build
 119
 120 Documentation options:
 121   --disable-doc            do not build documentation
 122   --disable-htmlpages      do not build HTML documentation pages
 123   --disable-manpages       do not build man documentation pages
 124   --disable-podpages       do not build POD documentation pages
 125   --disable-txtpages       do not build text documentation pages
 126
 127 Component options:
 128   --disable-avdevice       disable libavdevice build
 129   --disable-avcodec        disable libavcodec build
 130   --disable-avformat       disable libavformat build
 131   --disable-swresample     disable libswresample build
 132   --disable-swscale        disable libswscale build
 133   --disable-postproc       disable libpostproc build
 134   --disable-avfilter       disable libavfilter build
 135   --enable-avresample      enable libavresample build [no]
 136   --disable-pthreads       disable pthreads [autodetect]
 137   --disable-w32threads     disable Win32 threads [autodetect]
 138   --disable-os2threads     disable OS/2 threads [autodetect]
 139   --disable-network        disable network support [no]
 140   --disable-dct            disable DCT code
 141   --disable-dwt            disable DWT code
 142   --disable-error-resilience disable error resilience code
 143   --disable-lsp            disable LSP code
 144   --disable-lzo            disable LZO decoder code
 145   --disable-mdct           disable MDCT code
 146   --disable-rdft           disable RDFT code
 147   --disable-fft            disable FFT code
 148   --disable-faan           disable floating point AAN (I)DCT code
 149   --disable-pixelutils     disable pixel utils in libavutil
 150
 151 Individual component options:
 152   --disable-everything     disable all components listed below
 153   --disable-encoder=NAME   disable encoder NAME
 154   --enable-encoder=NAME    enable encoder NAME
 155   --disable-encoders       disable all encoders
 156   --disable-decoder=NAME   disable decoder NAME
 157   --enable-decoder=NAME    enable decoder NAME
 158   --disable-decoders       disable all decoders
 159   --disable-hwaccel=NAME   disable hwaccel NAME
 160   --enable-hwaccel=NAME    enable hwaccel NAME
 161   --disable-hwaccels       disable all hwaccels
 162   --disable-muxer=NAME     disable muxer NAME
 163   --enable-muxer=NAME      enable muxer NAME
 164   --disable-muxers         disable all muxers
 165   --disable-demuxer=NAME   disable demuxer NAME
 166   --enable-demuxer=NAME    enable demuxer NAME
 167   --disable-demuxers       disable all demuxers
 168   --enable-parser=NAME     enable parser NAME
 169   --disable-parser=NAME    disable parser NAME
 170   --disable-parsers        disable all parsers
 171   --enable-bsf=NAME        enable bitstream filter NAME
 172   --disable-bsf=NAME       disable bitstream filter NAME
 173   --disable-bsfs           disable all bitstream filters
 174   --enable-protocol=NAME   enable protocol NAME
 175   --disable-protocol=NAME  disable protocol NAME
 176   --disable-protocols      disable all protocols
 177   --enable-indev=NAME      enable input device NAME
 178   --disable-indev=NAME     disable input device NAME
 179   --disable-indevs         disable input devices
 180   --enable-outdev=NAME     enable output device NAME
 181   --disable-outdev=NAME    disable output device NAME
 182   --disable-outdevs        disable output devices
 183   --disable-devices        disable all devices
 184   --enable-filter=NAME     enable filter NAME
 185   --disable-filter=NAME    disable filter NAME
 186   --disable-filters        disable all filters
 187
 188 External library support:
 189
 190   Using any of the following switches will allow FFmpeg to link to the
 191   corresponding external library. All the components depending on that library
 192   will become enabled, if all their other dependencies are met and they are not
 193   explicitly disabled. E.g. --enable-libwavpack will enable linking to
 194   libwavpack and allow the libwavpack encoder to be built, unless it is
 195   specifically disabled with --disable-encoder=libwavpack.
 196
 197   Note that only the system libraries are auto-detected. All the other external
 198   libraries must be explicitly enabled.
 199
 200   Also note that the following help text describes the purpose of the libraries
 201   themselves, not all their features will necessarily be usable by FFmpeg.
 202
 203   --enable-avisynth        enable reading of AviSynth script files [no]
 204   --disable-bzlib          disable bzlib [autodetect]
 205   --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
 206   --enable-frei0r          enable frei0r video filtering [no]
 207   --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
 208                            if openssl, librtmp or gmp is not used [no]
 209   --enable-gmp             enable gmp, needed for rtmp(t)e support
 210                            if openssl or librtmp is not used [no]
 211   --enable-gnutls          enable gnutls, needed for https support
 212                            if openssl is not used [no]
 213   --disable-iconv          disable iconv [autodetect]
 214   --enable-jni             enable JNI support [no]
 215   --enable-ladspa          enable LADSPA audio filtering [no]
 216   --enable-libass          enable libass subtitles rendering,
 217                            needed for subtitles and ass filter [no]
 218   --enable-libbluray       enable BluRay reading using libbluray [no]
 219   --enable-libbs2b         enable bs2b DSP library [no]
 220   --enable-libcaca         enable textual display using libcaca [no]
 221   --enable-libcelt         enable CELT decoding via libcelt [no]
 222   --enable-libcdio         enable audio CD grabbing with libcdio [no]
 223   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 224                            and libraw1394 [no]
 225   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 226   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 227   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
 228   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
 229   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
 230   --enable-libgme          enable Game Music Emu via libgme [no]
 231   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 232   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 233   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 234   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
 235   --enable-libmodplug      enable ModPlug via libmodplug [no]
 236   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 237   --enable-libnut          enable NUT (de)muxing via libnut,
 238                            native (de)muxer exists [no]
 239   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 240   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 241   --enable-libopencv       enable video filtering via libopencv [no]
 242   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 243   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 244   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
 245   --enable-libopus         enable Opus de/encoding via libopus [no]
 246   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 247   --enable-librubberband   enable rubberband needed for rubberband filter [no]
 248   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 249   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
 250   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 251   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 252   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
 253   --enable-libsoxr         enable Include libsoxr resampling [no]
 254   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 255   --enable-libssh          enable SFTP protocol via libssh [no]
 256   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
 257   --enable-libtheora       enable Theora encoding via libtheora [no]
 258   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 259   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 260   --enable-libvidstab      enable video stabilization using vid.stab [no]
 261   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 262   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 263                            native implementation exists [no]
 264   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 265   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 266   --enable-libwebp         enable WebP encoding via libwebp [no]
 267   --enable-libx264         enable H.264 encoding via x264 [no]
 268   --enable-libx265         enable HEVC encoding via x265 [no]
 269   --enable-libxavs         enable AVS encoding via xavs [no]
 270   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
 271   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
 272   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
 273   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
 274   --enable-libxvid         enable Xvid encoding via xvidcore,
 275                            native MPEG-4/Xvid encoder exists [no]
 276   --enable-libzimg         enable z.lib, needed for zscale filter [no]
 277   --enable-libzmq          enable message passing via libzmq [no]
 278   --enable-libzvbi         enable teletext support via libzvbi [no]
 279   --disable-lzma           disable lzma [autodetect]
 280   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
 281   --enable-mediacodec      enable Android MediaCodec support [no]
 282   --enable-netcdf          enable NetCDF, needed for sofalizer filter [no]
 283   --enable-openal          enable OpenAL 1.1 capture support [no]
 284   --enable-opencl          enable OpenCL code
 285   --enable-opengl          enable OpenGL rendering [no]
 286   --enable-openssl         enable openssl, needed for https support
 287                            if gnutls is not used [no]
 288   --disable-schannel       disable SChannel SSP, needed for TLS support on
 289                            Windows if openssl and gnutls are not used [autodetect]
 290   --disable-sdl2           disable sdl2 [autodetect]
 291   --disable-securetransport disable Secure Transport, needed for TLS support
 292                            on OSX if openssl and gnutls are not used [autodetect]
 293   --disable-xlib           disable xlib [autodetect]
 294   --disable-zlib           disable zlib [autodetect]
 295
 296   The following libraries provide various hardware acceleration features:
 297   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
 298   --disable-cuda           disable dynamically linked Nvidia CUDA code [autodetect]
 299   --disable-cuvid          disable Nvidia CUVID support [autodetect]
 300   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
 301   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
 302   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
 303   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
 304   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
 305   --disable-nvenc          disable Nvidia video encoding code [autodetect]
 306   --enable-omx             enable OpenMAX IL code [no]
 307   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
 308   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
 309   --disable-vda            disable Apple Video Decode Acceleration code [autodetect]
 310   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
 311   --disable-videotoolbox   disable VideoToolbox code [autodetect]
 312
 313 Toolchain options:
 314   --arch=ARCH              select architecture [$arch]
 315   --cpu=CPU                select the minimum required CPU (affects
 316                            instruction selection, may crash on older CPUs)
 317   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 318   --progs-suffix=SUFFIX    program name suffix []
 319   --enable-cross-compile   assume a cross-compiler is used
 320   --sysroot=PATH           root of cross-build tree
 321   --sysinclude=PATH        location of cross-build system headers
 322   --target-os=OS           compiler targets OS [$target_os]
 323   --target-exec=CMD        command to run executables on target
 324   --target-path=DIR        path to view of build directory on target
 325   --target-samples=DIR     path to samples directory on target
 326   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 327   --toolchain=NAME         set tool defaults according to NAME
 328   --nm=NM                  use nm tool NM [$nm_default]
 329   --ar=AR                  use archive tool AR [$ar_default]
 330   --as=AS                  use assembler AS [$as_default]
 331   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
 332   --strip=STRIP            use strip tool STRIP [$strip_default]
 333   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 334   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
 335   --cc=CC                  use C compiler CC [$cc_default]
 336   --cxx=CXX                use C compiler CXX [$cxx_default]
 337   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 338   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 339   --ld=LD                  use linker LD [$ld_default]
 340   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 341   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 342   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 343   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 344   --host-cc=HOSTCC         use host C compiler HOSTCC
 345   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 346   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 347   --host-ld=HOSTLD         use host linker HOSTLD
 348   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 349   --host-libs=HLIBS        use libs HLIBS when linking for host
 350   --host-os=OS             compiler host OS [$target_os]
 351   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 352   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 353   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 354   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 355   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 356   --extra-ldlibflags=ELDFLAGS add ELDFLAGS to LDLIBFLAGS [$LDLIBFLAGS]
 357   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 358   --extra-version=STRING   version string suffix []
 359   --optflags=OPTFLAGS      override optimization-related compiler flags
 360   --build-suffix=SUFFIX    library name suffix []
 361   --enable-pic             build position-independent code
 362   --enable-thumb           compile for Thumb instruction set
 363   --enable-lto             use link-time optimization
 364   --env="ENV=override"     override the environment variables
 365
 366 Advanced options (experts only):
 367   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 368   --custom-allocator=NAME  use a supported custom allocator
 369   --disable-symver         disable symbol versioning
 370   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 371   --disable-safe-bitstream-reader
 372                            disable buffer boundary checking in bitreaders
 373                            (faster, but may crash)
 374   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 375
 376 Optimization options (experts only):
 377   --disable-asm            disable all assembly optimizations
 378   --disable-altivec        disable AltiVec optimizations
 379   --disable-vsx            disable VSX optimizations
 380   --disable-power8         disable POWER8 optimizations
 381   --disable-amd3dnow       disable 3DNow! optimizations
 382   --disable-amd3dnowext    disable 3DNow! extended optimizations
 383   --disable-mmx            disable MMX optimizations
 384   --disable-mmxext         disable MMXEXT optimizations
 385   --disable-sse            disable SSE optimizations
 386   --disable-sse2           disable SSE2 optimizations
 387   --disable-sse3           disable SSE3 optimizations
 388   --disable-ssse3          disable SSSE3 optimizations
 389   --disable-sse4           disable SSE4 optimizations
 390   --disable-sse42          disable SSE4.2 optimizations
 391   --disable-avx            disable AVX optimizations
 392   --disable-xop            disable XOP optimizations
 393   --disable-fma3           disable FMA3 optimizations
 394   --disable-fma4           disable FMA4 optimizations
 395   --disable-avx2           disable AVX2 optimizations
 396   --disable-aesni          disable AESNI optimizations
 397   --disable-armv5te        disable armv5te optimizations
 398   --disable-armv6          disable armv6 optimizations
 399   --disable-armv6t2        disable armv6t2 optimizations
 400   --disable-vfp            disable VFP optimizations
 401   --disable-neon           disable NEON optimizations
 402   --disable-inline-asm     disable use of inline assembly
 403   --disable-yasm           disable use of nasm/yasm assembly
 404   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
 405   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 406   --disable-msa            disable MSA optimizations
 407   --disable-mipsfpu        disable floating point MIPS optimizations
 408   --disable-mmi            disable Loongson SIMD optimizations
 409   --disable-fast-unaligned consider unaligned accesses slow
 410
 411 Developer options (useful when working on FFmpeg itself):
 412   --disable-debug          disable debugging symbols
 413   --enable-debug=LEVEL     set the debug level [$debuglevel]
 414   --disable-optimizations  disable compiler optimizations
 415   --enable-extra-warnings  enable more compiler warnings
 416   --disable-stripping      disable stripping of executables and shared libraries
 417   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 418                            2 causes a slowdown at runtime.
 419   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 420   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 421                            leaks and errors, using the specified valgrind binary.
 422                            Cannot be combined with --target-exec
 423   --enable-ftrapv          Trap arithmetic overflows
 424   --samples=PATH           location of test samples for FATE, if not set use
 425                            \$FATE_SAMPLES at make invocation time.
 426   --enable-neon-clobber-test check NEON registers for clobbering (should be
 427                            used only for debugging purposes)
 428   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 429                            should be used only for debugging purposes)
 430   --enable-random          randomly enable/disable components
 431   --disable-random
 432   --enable-random=LIST     randomly enable/disable specific components or
 433   --disable-random=LIST    component groups. LIST is a comma-separated list
 434                            of NAME[:PROB] entries where NAME is a component
 435                            (group) and PROB the probability associated with
 436                            NAME (default 0.5).
 437   --random-seed=VALUE      seed value for --enable/disable-random
 438   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 439                            (only applies to --disable-optimizations builds)
 440
 441 NOTE: Object files are built at the place where configure is launched.
 442 EOF
 443   exit 0
 444 }
 445
 446 quotes='""'
 447 if test -t 1 && which tput >/dev/null 2>&1; then
 448     ncolors=$(tput colors)
 449     if test -n "$ncolors" && test $ncolors -ge 8; then
 450         bold_color=$(tput bold)
 451         warn_color=$(tput setaf 3)
 452         error_color=$(tput setaf 1)
 453         reset_color=$(tput sgr0)
 454     fi
 455     # 72 used instead of 80 since that's the default of pr
 456     ncols=$(tput cols)
 457 fi
 458 : ${ncols:=72}
 459
 460 log(){
 461     echo "$@" >> $logfile
 462 }
 463
 464 log_file(){
 465     log BEGIN $1
 466     pr -n -t $1 >> $logfile
 467     log END $1
 468 }
 469
 470 warn(){
 471     log "WARNING: $*"
 472     WARNINGS="${WARNINGS}WARNING: $*\n"
 473 }
 474
 475 die(){
 476     log "$@"
 477     echo "$error_color$bold_color$@$reset_color"
 478     cat <<EOF
 479
 480 If you think configure made a mistake, make sure you are using the latest
 481 version from Git.  If the latest version fails, report the problem to the
 482 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 483 EOF
 484     if disabled logging; then
 485         cat <<EOF
 486 Rerun configure with logging enabled (do not use --disable-logging), and
 487 include the log this produces with your report.
 488 EOF
 489     else
 490         cat <<EOF
 491 Include the log file "$logfile" produced by configure as this will help
 492 solve the problem.
 493 EOF
 494     fi
 495     exit 1
 496 }
 497
 498 # Avoid locale weirdness, besides we really just want to translate ASCII.
 499 toupper(){
 500     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 501 }
 502
 503 tolower(){
 504     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 505 }
 506
 507 c_escape(){
 508     echo "$*" | sed 's/["\\]/\\\0/g'
 509 }
 510
 511 sh_quote(){
 512     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 513     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 514     echo "$v"
 515 }
 516
 517 cleanws(){
 518     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 519 }
 520
 521 filter(){
 522     pat=$1
 523     shift
 524     for v; do
 525         eval "case $v in $pat) echo $v ;; esac"
 526     done
 527 }
 528
 529 filter_out(){
 530     pat=$1
 531     shift
 532     for v; do
 533         eval "case $v in $pat) ;; *) echo $v ;; esac"
 534     done
 535 }
 536
 537 map(){
 538     m=$1
 539     shift
 540     for v; do eval $m; done
 541 }
 542
 543 add_suffix(){
 544     suffix=$1
 545     shift
 546     for v; do echo ${v}${suffix}; done
 547 }
 548
 549 set_all(){
 550     value=$1
 551     shift
 552     for var in $*; do
 553         eval $var=$value
 554     done
 555 }
 556
 557 set_weak(){
 558     value=$1
 559     shift
 560     for var; do
 561         eval : \${$var:=$value}
 562     done
 563 }
 564
 565 sanitize_var_name(){
 566     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 567 }
 568
 569 set_safe(){
 570     var=$1
 571     shift
 572     eval $(sanitize_var_name "$var")='$*'
 573 }
 574
 575 get_safe(){
 576     eval echo \$$(sanitize_var_name "$1")
 577 }
 578
 579 pushvar(){
 580     for pvar in $*; do
 581         eval level=\${${pvar}_level:=0}
 582         eval ${pvar}_${level}="\$$pvar"
 583         eval ${pvar}_level=$(($level+1))
 584     done
 585 }
 586
 587 popvar(){
 588     for pvar in $*; do
 589         eval level=\${${pvar}_level:-0}
 590         test $level = 0 && continue
 591         eval level=$(($level-1))
 592         eval $pvar="\${${pvar}_${level}}"
 593         eval ${pvar}_level=$level
 594         eval unset ${pvar}_${level}
 595     done
 596 }
 597
 598 request(){
 599     for var in $*; do
 600         eval ${var}_requested=yes
 601         eval $var=
 602     done
 603 }
 604
 605 enable(){
 606     set_all yes $*
 607 }
 608
 609 disable(){
 610     set_all no $*
 611 }
 612
 613 enable_weak(){
 614     set_weak yes $*
 615 }
 616
 617 disable_weak(){
 618     set_weak no $*
 619 }
 620
 621 enable_safe(){
 622     for var; do
 623         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 624     done
 625 }
 626
 627 disable_safe(){
 628     for var; do
 629         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 630     done
 631 }
 632
 633 do_enable_deep(){
 634     for var; do
 635         enabled $var && continue
 636         eval sel="\$${var}_select"
 637         eval sgs="\$${var}_suggest"
 638         pushvar var sgs
 639         enable_deep $sel
 640         popvar sgs
 641         enable_deep_weak $sgs
 642         popvar var
 643     done
 644 }
 645
 646 enable_deep(){
 647     do_enable_deep $*
 648     enable $*
 649 }
 650
 651 enable_deep_weak(){
 652     for var; do
 653         disabled $var && continue
 654         pushvar var
 655         do_enable_deep $var
 656         popvar var
 657         enable_weak $var
 658     done
 659 }
 660
 661 requested(){
 662     test "${1#!}" = "$1" && op='=' || op=!=
 663     eval test "x\$${1#!}_requested" $op "xyes"
 664 }
 665
 666 enabled(){
 667     test "${1#!}" = "$1" && op='=' || op=!=
 668     eval test "x\$${1#!}" $op "xyes"
 669 }
 670
 671 disabled(){
 672     test "${1#!}" = "$1" && op='=' || op=!=
 673     eval test "x\$${1#!}" $op "xno"
 674 }
 675
 676 enabled_all(){
 677     for opt; do
 678         enabled $opt || return 1
 679     done
 680 }
 681
 682 disabled_all(){
 683     for opt; do
 684         disabled $opt || return 1
 685     done
 686 }
 687
 688 enabled_any(){
 689     for opt; do
 690         enabled $opt && return 0
 691     done
 692 }
 693
 694 disabled_any(){
 695     for opt; do
 696         disabled $opt && return 0
 697     done
 698     return 1
 699 }
 700
 701 set_default(){
 702     for opt; do
 703         eval : \${$opt:=\$${opt}_default}
 704     done
 705 }
 706
 707 is_in(){
 708     value=$1
 709     shift
 710     for var in $*; do
 711         [ $var = $value ] && return 0
 712     done
 713     return 1
 714 }
 715
 716 do_check_deps(){
 717     for cfg; do
 718         cfg="${cfg#!}"
 719         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 720         disabled ${cfg}_checking && continue
 721         enable ${cfg}_checking
 722         append allopts $cfg
 723
 724         eval dep_all="\$${cfg}_deps"
 725         eval dep_any="\$${cfg}_deps_any"
 726         eval dep_sel="\$${cfg}_select"
 727         eval dep_sgs="\$${cfg}_suggest"
 728         eval dep_ifa="\$${cfg}_if"
 729         eval dep_ifn="\$${cfg}_if_any"
 730
 731         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 732         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
 733         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 734
 735         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 736         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 737         enabled_all  $dep_all || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not all dependencies are satisfied: $dep_all"; }
 738         enabled_any  $dep_any || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not any dependency is satisfied: $dep_any"; }
 739         disabled_any $dep_sel && { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some selected dependency is unsatisfied: $dep_sel"; }
 740
 741         if enabled $cfg; then
 742             enable_deep $dep_sel
 743             enable_deep_weak $dep_sgs
 744         fi
 745
 746         disable ${cfg}_checking
 747     done
 748 }
 749
 750 check_deps(){
 751     unset allopts
 752
 753     do_check_deps "$@"
 754
 755     for cfg in $allopts; do
 756         enabled $cfg || continue
 757         eval dep_extralibs="\$${cfg}_extralibs"
 758         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
 759     done
 760 }
 761
 762 print_config(){
 763     pfx=$1
 764     files=$2
 765     shift 2
 766     map 'eval echo "$v \${$v:-no}"' "$@" |
 767     awk "BEGIN { split(\"$files\", files) }
 768         {
 769             c = \"$pfx\" toupper(\$1);
 770             v = \$2;
 771             sub(/yes/, 1, v);
 772             sub(/no/,  0, v);
 773             for (f in files) {
 774                 file = files[f];
 775                 if (file ~ /\\.h\$/) {
 776                     printf(\"#define %s %d\\n\", c, v) >>file;
 777                 } else if (file ~ /\\.asm\$/) {
 778                     printf(\"%%define %s %d\\n\", c, v) >>file;
 779                 } else if (file ~ /\\.mak\$/) {
 780                     n = -v ? \"\" : \"!\";
 781                     printf(\"%s%s=yes\\n\", n, c) >>file;
 782                 } else if (file ~ /\\.texi\$/) {
 783                     pre = -v ? \"\" : \"@c \";
 784                     yesno = \$2;
 785                     c2 = tolower(c);
 786                     gsub(/_/, \"-\", c2);
 787                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 788                 }
 789             }
 790         }"
 791 }
 792
 793 print_enabled(){
 794     suf=$1
 795     shift
 796     for v; do
 797         enabled $v && printf "%s\n" ${v%$suf}
 798     done
 799 }
 800
 801 append(){
 802     var=$1
 803     shift
 804     eval "$var=\"\$$var $*\""
 805 }
 806
 807 prepend(){
 808     var=$1
 809     shift
 810     eval "$var=\"$* \$$var\""
 811 }
 812
 813 unique(){
 814     var=$1
 815     uniq_list=""
 816     for tok in $(eval echo \$$var); do
 817         uniq_list="$(filter_out $tok $uniq_list) $tok"
 818     done
 819     eval "$var=\"${uniq_list}\""
 820 }
 821
 822 add_cppflags(){
 823     append CPPFLAGS "$@"
 824 }
 825
 826 add_cflags(){
 827     append CFLAGS $($cflags_filter "$@")
 828 }
 829
 830 add_cxxflags(){
 831     append CXXFLAGS $($cflags_filter "$@")
 832 }
 833
 834 add_asflags(){
 835     append ASFLAGS $($asflags_filter "$@")
 836 }
 837
 838 add_objcflags(){
 839     append OBJCFLAGS $($objcflags_filter "$@")
 840 }
 841
 842 add_ldflags(){
 843     append LDFLAGS $($ldflags_filter "$@")
 844 }
 845
 846 add_ldexeflags(){
 847     append LDEXEFLAGS $($ldflags_filter "$@")
 848 }
 849
 850 add_ldlibflags(){
 851     append LDLIBFLAGS $($ldflags_filter "$@")
 852 }
 853
 854 add_stripflags(){
 855     append ASMSTRIPFLAGS "$@"
 856 }
 857
 858 add_extralibs(){
 859     prepend extralibs $($ldflags_filter "$@")
 860 }
 861
 862 add_host_cppflags(){
 863     append host_cppflags "$@"
 864 }
 865
 866 add_host_cflags(){
 867     append host_cflags $($host_cflags_filter "$@")
 868 }
 869
 870 add_host_ldflags(){
 871     append host_ldflags $($host_ldflags_filter "$@")
 872 }
 873
 874 add_compat(){
 875     append compat_objs $1
 876     shift
 877     map 'add_cppflags -D$v' "$@"
 878 }
 879
 880 check_cmd(){
 881     log "$@"
 882     "$@" >> $logfile 2>&1
 883 }
 884
 885 check_stat(){
 886     log check_stat "$@"
 887     stat "$1" >> $logfile 2>&1
 888 }
 889
 890 cc_o(){
 891     eval printf '%s\\n' $CC_O
 892 }
 893
 894 cc_e(){
 895     eval printf '%s\\n' $CC_E
 896 }
 897
 898 check_cc(){
 899     log check_cc "$@"
 900     cat > $TMPC
 901     log_file $TMPC
 902     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 903 }
 904
 905 check_cxx(){
 906     log check_cxx "$@"
 907     cat > $TMPCPP
 908     log_file $TMPCPP
 909     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 910 }
 911
 912 check_objcc(){
 913     log check_objcc "$@"
 914     cat > $TMPM
 915     log_file $TMPM
 916     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
 917 }
 918
 919 check_cpp(){
 920     log check_cpp "$@"
 921     cat > $TMPC
 922     log_file $TMPC
 923     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 924 }
 925
 926 as_o(){
 927     eval printf '%s\\n' $AS_O
 928 }
 929
 930 check_as(){
 931     log check_as "$@"
 932     cat > $TMPS
 933     log_file $TMPS
 934     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 935 }
 936
 937 check_inline_asm(){
 938     log check_inline_asm "$@"
 939     name="$1"
 940     code="$2"
 941     shift 2
 942     disable $name
 943     check_cc "$@" <<EOF && enable $name
 944 void foo(void){ __asm__ volatile($code); }
 945 EOF
 946 }
 947
 948 check_inline_asm_flags(){
 949     log check_inline_asm_flags "$@"
 950     name="$1"
 951     code="$2"
 952     flags=''
 953     shift 2
 954     while [ "$1" != "" ]; do
 955       append flags $1
 956       shift
 957     done;
 958     disable $name
 959     cat > $TMPC <<EOF
 960 void foo(void){ __asm__ volatile($code); }
 961 EOF
 962     log_file $TMPC
 963     check_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
 964     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
 965 }
 966
 967 check_insn(){
 968     log check_insn "$@"
 969     check_inline_asm ${1}_inline "\"$2\""
 970     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 971 }
 972
 973 check_yasm(){
 974     log check_yasm "$@"
 975     echo "$1" > $TMPS
 976     log_file $TMPS
 977     shift 1
 978     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
 979 }
 980
 981 ld_o(){
 982     eval printf '%s\\n' $LD_O
 983 }
 984
 985 check_ld(){
 986     log check_ld "$@"
 987     type=$1
 988     shift 1
 989     flags=$(filter_out '-l*|*.so' $@)
 990     libs=$(filter '-l*|*.so' $@)
 991     check_$type $($cflags_filter $flags) || return
 992     flags=$($ldflags_filter $flags)
 993     libs=$($ldflags_filter $libs)
 994     check_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
 995 }
 996
 997 print_include(){
 998     hdr=$1
 999     test "${hdr%.h}" = "${hdr}" &&
1000         echo "#include $hdr"    ||
1001         echo "#include <$hdr>"
1002 }
1003
1004 check_code(){
1005     log check_code "$@"
1006     check=$1
1007     headers=$2
1008     code=$3
1009     shift 3
1010     {
1011         for hdr in $headers; do
1012             print_include $hdr
1013         done
1014         echo "int main(void) { $code; return 0; }"
1015     } | check_$check "$@"
1016 }
1017
1018 check_cppflags(){
1019     log check_cppflags "$@"
1020     check_cc "$@" <<EOF && append CPPFLAGS "$@"
1021 int x;
1022 EOF
1023 }
1024
1025 test_cflags(){
1026     log test_cflags "$@"
1027     set -- $($cflags_filter "$@")
1028     check_cc "$@" <<EOF
1029 int x;
1030 EOF
1031 }
1032
1033 check_cflags(){
1034     log check_cflags "$@"
1035     test_cflags "$@" && add_cflags "$@"
1036 }
1037
1038 check_cxxflags(){
1039     log check_cxxflags "$@"
1040     set -- $($cflags_filter "$@")
1041     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
1042 int x;
1043 EOF
1044 }
1045
1046 test_objcflags(){
1047     log test_cflags "$@"
1048     set -- $($cflags_filter "$@")
1049     check_objcc "$@" <<EOF
1050 int x;
1051 EOF
1052 }
1053
1054 check_objcflags(){
1055     log check_cflags "$@"
1056     test_objcflags "$@" && add_objcflags "$@"
1057 }
1058
1059 test_ldflags(){
1060     log test_ldflags "$@"
1061     check_ld "cc" "$@" <<EOF
1062 int main(void){ return 0; }
1063 EOF
1064 }
1065
1066 check_ldflags(){
1067     log check_ldflags "$@"
1068     test_ldflags "$@" && add_ldflags "$@"
1069 }
1070
1071 test_stripflags(){
1072     log test_stripflags "$@"
1073     # call check_cc to get a fresh TMPO
1074     check_cc <<EOF
1075 int main(void) { return 0; }
1076 EOF
1077     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1078 }
1079
1080 check_stripflags(){
1081     log check_stripflags "$@"
1082     test_stripflags "$@" && add_stripflags "$@"
1083 }
1084
1085 check_header(){
1086     log check_header "$@"
1087     header=$1
1088     shift
1089     disable_safe $header
1090     check_cpp "$@" <<EOF && enable_safe $header
1091 #include <$header>
1092 int x;
1093 EOF
1094 }
1095
1096 check_header_objcc(){
1097     log check_header_objcc "$@"
1098     rm -f -- "$TMPO"
1099     header=$1
1100     shift
1101     disable_safe $header
1102     {
1103        echo "#include <$header>"
1104        echo "int main(void) { return 0; }"
1105     } | check_objcc && check_stat "$TMPO" && enable_safe $headers
1106 }
1107
1108 check_func(){
1109     log check_func "$@"
1110     func=$1
1111     shift
1112     disable $func
1113     check_ld "cc" "$@" <<EOF && enable $func
1114 extern int $func();
1115 int main(void){ $func(); }
1116 EOF
1117 }
1118
1119 check_complexfunc(){
1120     log check_complexfunc "$@"
1121     func=$1
1122     narg=$2
1123     shift 2
1124     test $narg = 2 && args="f, g" || args="f * I"
1125     disable $func
1126     check_ld "cc" "$@" <<EOF && enable $func
1127 #include <complex.h>
1128 #include <math.h>
1129 float foo(complex float f, complex float g) { return $func($args); }
1130 int main(void){ return (int) foo; }
1131 EOF
1132 }
1133
1134 check_mathfunc(){
1135     log check_mathfunc "$@"
1136     func=$1
1137     narg=$2
1138     shift 2
1139     test $narg = 2 && args="f, g" || args="f"
1140     disable $func
1141     check_ld "cc" "$@" <<EOF && enable $func
1142 #include <math.h>
1143 float foo(float f, float g) { return $func($args); }
1144 int main(void){ return (int) foo; }
1145 EOF
1146 }
1147
1148 check_func_headers(){
1149     log check_func_headers "$@"
1150     headers=$1
1151     funcs=$2
1152     shift 2
1153     {
1154         for hdr in $headers; do
1155             print_include $hdr
1156         done
1157         echo "#include <stdint.h>"
1158         for func in $funcs; do
1159             echo "long check_$func(void) { return (long) $func; }"
1160         done
1161         echo "int main(void) { int ret = 0;"
1162         # LTO could optimize out the test functions without this
1163         for func in $funcs; do
1164             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1165         done
1166         echo "return ret; }"
1167     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1168 }
1169
1170 check_class_headers_cpp(){
1171     log check_class_headers_cpp "$@"
1172     headers=$1
1173     classes=$2
1174     shift 2
1175     {
1176         for hdr in $headers; do
1177             echo "#include <$hdr>"
1178         done
1179         echo "int main(void) { "
1180         i=1
1181         for class in $classes; do
1182             echo "$class obj$i;"
1183             i=$(expr $i + 1)
1184         done
1185         echo "return 0; }"
1186     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1187 }
1188
1189 check_cpp_condition(){
1190     log check_cpp_condition "$@"
1191     header=$1
1192     condition=$2
1193     shift 2
1194     check_cpp "$@" <<EOF
1195 #include <$header>
1196 #if !($condition)
1197 #error "unsatisfied condition: $condition"
1198 #endif
1199 EOF
1200 }
1201
1202 test_cflags_cc(){
1203     log test_cflags_cc "$@"
1204     flags=$1
1205     header=$2
1206     condition=$3
1207     shift 3
1208     set -- $($cflags_filter "$flags")
1209     check_cc "$@" <<EOF
1210 #include <$header>
1211 #if !($condition)
1212 #error "unsatisfied condition: $condition"
1213 #endif
1214 EOF
1215 }
1216
1217 check_lib(){
1218     log check_lib "$@"
1219     headers="$1"
1220     funcs="$2"
1221     shift 2
1222     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1223 }
1224
1225 check_lib_cpp(){
1226     log check_lib_cpp "$@"
1227     headers="$1"
1228     classes="$2"
1229     shift 2
1230     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1231 }
1232
1233 check_pkg_config(){
1234     log check_pkg_config "$@"
1235     pkgandversion="$1"
1236     pkg="${1%% *}"
1237     headers="$2"
1238     funcs="$3"
1239     shift 3
1240     check_cmd $pkg_config --exists --print-errors $pkgandversion || return
1241     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1242     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1243     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1244         set_safe "${pkg}_cflags" $pkg_cflags   &&
1245         set_safe "${pkg}_libs"   $pkg_libs
1246 }
1247
1248 check_exec(){
1249     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1250 }
1251
1252 check_exec_crash(){
1253     code=$(cat)
1254
1255     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1256     # are safe but may not be available everywhere.  Thus we use
1257     # raise(SIGTERM) instead.  The check is run in a subshell so we
1258     # can redirect the "Terminated" message from the shell.  SIGBUS
1259     # is not defined by standard C so it is used conditionally.
1260
1261     (check_exec "$@") >> $logfile 2>&1 <<EOF
1262 #include <signal.h>
1263 static void sighandler(int sig){
1264     raise(SIGTERM);
1265 }
1266 int foo(void){
1267     $code
1268 }
1269 int (*func_ptr)(void) = foo;
1270 int main(void){
1271     signal(SIGILL, sighandler);
1272     signal(SIGFPE, sighandler);
1273     signal(SIGSEGV, sighandler);
1274 #ifdef SIGBUS
1275     signal(SIGBUS, sighandler);
1276 #endif
1277     return func_ptr();
1278 }
1279 EOF
1280 }
1281
1282 check_type(){
1283     log check_type "$@"
1284     headers=$1
1285     type=$2
1286     shift 2
1287     disable_safe "$type"
1288     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1289 }
1290
1291 check_struct(){
1292     log check_struct "$@"
1293     headers=$1
1294     struct=$2
1295     member=$3
1296     shift 3
1297     disable_safe "${struct}_${member}"
1298     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1299         enable_safe "${struct}_${member}"
1300 }
1301
1302 check_builtin(){
1303     log check_builtin "$@"
1304     name=$1
1305     headers=$2
1306     builtin=$3
1307     shift 3
1308     disable "$name"
1309     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1310 }
1311
1312 check_compile_assert(){
1313     log check_compile_assert "$@"
1314     name=$1
1315     headers=$2
1316     condition=$3
1317     shift 3
1318     disable "$name"
1319     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1320 }
1321
1322 require(){
1323     name="$1"
1324     headers="$2"
1325     func="$3"
1326     shift 3
1327     check_lib "$headers" $func "$@" || die "ERROR: $name not found"
1328 }
1329
1330 require_cpp(){
1331     name="$1"
1332     headers="$2"
1333     classes="$3"
1334     shift 3
1335     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1336 }
1337
1338 use_pkg_config(){
1339     pkg="$1"
1340     check_pkg_config "$@" || return 1
1341     add_cflags    $(get_safe "${pkg}_cflags")
1342     add_extralibs $(get_safe "${pkg}_libs")
1343 }
1344
1345 require_pkg_config(){
1346     use_pkg_config "$@" || die "ERROR: $pkg not found using pkg-config$pkg_config_fail_message"
1347 }
1348
1349 require_libfreetype(){
1350     log require_libfreetype "$@"
1351     pkg="freetype2"
1352     check_cmd $pkg_config --exists --print-errors $pkg \
1353       || die "ERROR: $pkg not found"
1354     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1355     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1356     {
1357         echo "#include <ft2build.h>"
1358         echo "#include FT_FREETYPE_H"
1359         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1360         echo "int main(void) { return 0; }"
1361     } | check_ld "cc" $pkg_cflags $pkg_libs \
1362       && set_safe "${pkg}_cflags" $pkg_cflags \
1363       && set_safe "${pkg}_libs"   $pkg_libs \
1364       || die "ERROR: $pkg not found"
1365     add_cflags    $(get_safe "${pkg}_cflags")
1366     add_extralibs $(get_safe "${pkg}_libs")
1367 }
1368
1369 hostcc_e(){
1370     eval printf '%s\\n' $HOSTCC_E
1371 }
1372
1373 hostcc_o(){
1374     eval printf '%s\\n' $HOSTCC_O
1375 }
1376
1377 check_host_cc(){
1378     log check_host_cc "$@"
1379     cat > $TMPC
1380     log_file $TMPC
1381     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1382 }
1383
1384 check_host_cpp(){
1385     log check_host_cpp "$@"
1386     cat > $TMPC
1387     log_file $TMPC
1388     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1389 }
1390
1391 check_host_cppflags(){
1392     log check_host_cppflags "$@"
1393     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1394 int x;
1395 EOF
1396 }
1397
1398 check_host_cflags(){
1399     log check_host_cflags "$@"
1400     set -- $($host_cflags_filter "$@")
1401     check_host_cc "$@" <<EOF && append host_cflags "$@"
1402 int x;
1403 EOF
1404 }
1405
1406 check_host_cpp_condition(){
1407     log check_host_cpp_condition "$@"
1408     header=$1
1409     condition=$2
1410     shift 2
1411     check_host_cpp "$@" <<EOF
1412 #include <$header>
1413 #if !($condition)
1414 #error "unsatisfied condition: $condition"
1415 #endif
1416 EOF
1417 }
1418
1419 cp_if_changed(){
1420     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1421     mkdir -p "$(dirname $2)"
1422     $cp_f "$1" "$2"
1423 }
1424
1425 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1426 # system-dependent things.
1427
1428 AVCODEC_COMPONENTS="
1429     bsfs
1430     decoders
1431     encoders
1432     hwaccels
1433     parsers
1434 "
1435
1436 AVDEVICE_COMPONENTS="
1437     indevs
1438     outdevs
1439 "
1440 AVFILTER_COMPONENTS="
1441     filters
1442 "
1443 AVFORMAT_COMPONENTS="
1444     demuxers
1445     muxers
1446     protocols
1447 "
1448
1449 AVRESAMPLE_COMPONENTS=""
1450 AVUTIL_COMPONENTS=""
1451
1452 COMPONENT_LIST="
1453     $AVCODEC_COMPONENTS
1454     $AVDEVICE_COMPONENTS
1455     $AVFILTER_COMPONENTS
1456     $AVFORMAT_COMPONENTS
1457     $AVRESAMPLE_COMPONENTS
1458     $AVUTIL_COMPONENTS
1459 "
1460
1461 EXAMPLE_LIST="
1462     avio_dir_cmd_example
1463     avio_reading_example
1464     decoding_encoding_example
1465     demuxing_decoding_example
1466     extract_mvs_example
1467     filter_audio_example
1468     filtering_audio_example
1469     filtering_video_example
1470     http_multiclient_example
1471     metadata_example
1472     muxing_example
1473     qsvdec_example
1474     remuxing_example
1475     resampling_audio_example
1476     scaling_video_example
1477     transcode_aac_example
1478     transcoding_example
1479 "
1480 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1481     bzlib
1482     iconv
1483     libxcb
1484     libxcb_shm
1485     libxcb_shape
1486     libxcb_xfixes
1487     lzma
1488     schannel
1489     sdl
1490     sdl2
1491     securetransport
1492     xlib
1493     zlib
1494 "
1495
1496 EXTERNAL_LIBRARY_GPL_LIST="
1497     frei0r
1498     libcdio
1499     librubberband
1500     libvidstab
1501     libx264
1502     libx265
1503     libxavs
1504     libxvid
1505 "
1506
1507 EXTERNAL_LIBRARY_NONFREE_LIST="
1508     libfdk_aac
1509     openssl
1510 "
1511
1512 EXTERNAL_LIBRARY_VERSION3_LIST="
1513     gmp
1514     libopencore_amrnb
1515     libopencore_amrwb
1516     libvo_amrwbenc
1517 "
1518
1519 EXTERNAL_LIBRARY_GPLV3_LIST="
1520     libsmbclient
1521 "
1522
1523 EXTERNAL_LIBRARY_LIST="
1524     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1525     $EXTERNAL_LIBRARY_GPL_LIST
1526     $EXTERNAL_LIBRARY_NONFREE_LIST
1527     $EXTERNAL_LIBRARY_VERSION3_LIST
1528     $EXTERNAL_LIBRARY_GPLV3_LIST
1529     avisynth
1530     chromaprint
1531     crystalhd
1532     decklink
1533     gcrypt
1534     gnutls
1535     jni
1536     ladspa
1537     libass
1538     libbluray
1539     libbs2b
1540     libcaca
1541     libcelt
1542     libdc1394
1543     libflite
1544     libfontconfig
1545     libfreetype
1546     libfribidi
1547     libgme
1548     libgsm
1549     libiec61883
1550     libilbc
1551     libkvazaar
1552     libmodplug
1553     libmp3lame
1554     libnut
1555     libopencv
1556     libopenh264
1557     libopenjpeg
1558     libopenmpt
1559     libopus
1560     libpulse
1561     librtmp
1562     libschroedinger
1563     libshine
1564     libsmbclient
1565     libsnappy
1566     libsoxr
1567     libspeex
1568     libssh
1569     libtesseract
1570     libtheora
1571     libtwolame
1572     libv4l2
1573     libvorbis
1574     libvpx
1575     libwavpack
1576     libwebp
1577     libzimg
1578     libzmq
1579     libzvbi
1580     mediacodec
1581     netcdf
1582     openal
1583     opencl
1584     opengl
1585     videotoolbox
1586 "
1587 HWACCEL_AUTODETECT_LIBRARY_LIST="
1588     audiotoolbox
1589     cuda
1590     cuvid
1591     d3d11va
1592     dxva2
1593     nvenc
1594     vaapi
1595     vda
1596     vdpau
1597     videotoolbox_hwaccel
1598     xvmc
1599 "
1600
1601 HWACCEL_LIBRARY_NONFREE_LIST="
1602     libnpp
1603 "
1604
1605 HWACCEL_LIBRARY_LIST="
1606     $HWACCEL_AUTODETECT_LIBRARY_LIST
1607     $HWACCEL_LIBRARY_NONFREE_LIST
1608     libmfx
1609     mmal
1610     omx
1611 "
1612
1613 DOCUMENT_LIST="
1614     doc
1615     htmlpages
1616     manpages
1617     podpages
1618     txtpages
1619 "
1620
1621 FEATURE_LIST="
1622     ftrapv
1623     gray
1624     hardcoded_tables
1625     omx_rpi
1626     runtime_cpudetect
1627     safe_bitstream_reader
1628     shared
1629     small
1630     static
1631     swscale_alpha
1632 "
1633
1634 LIBRARY_LIST="
1635     avcodec
1636     avdevice
1637     avfilter
1638     avformat
1639     avresample
1640     avutil
1641     postproc
1642     swresample
1643     swscale
1644 "
1645
1646 LICENSE_LIST="
1647     gpl
1648     nonfree
1649     version3
1650 "
1651
1652 PROGRAM_LIST="
1653     ffplay
1654     ffprobe
1655     ffserver
1656     ffmpeg
1657 "
1658
1659 SUBSYSTEM_LIST="
1660     dct
1661     dwt
1662     error_resilience
1663     faan
1664     fast_unaligned
1665     fft
1666     lsp
1667     lzo
1668     mdct
1669     pixelutils
1670     network
1671     rdft
1672 "
1673
1674 CONFIG_LIST="
1675     $COMPONENT_LIST
1676     $DOCUMENT_LIST
1677     $EXAMPLE_LIST
1678     $EXTERNAL_LIBRARY_LIST
1679     $HWACCEL_LIBRARY_LIST
1680     $FEATURE_LIST
1681     $LICENSE_LIST
1682     $LIBRARY_LIST
1683     $PROGRAM_LIST
1684     $SUBSYSTEM_LIST
1685     fontconfig
1686     memory_poisoning
1687     neon_clobber_test
1688     pic
1689     raise_major
1690     thumb
1691     valgrind_backtrace
1692     xmm_clobber_test
1693 "
1694
1695 THREADS_LIST="
1696     pthreads
1697     os2threads
1698     w32threads
1699 "
1700
1701 ATOMICS_LIST="
1702     atomics_gcc
1703     atomics_suncc
1704     atomics_win32
1705 "
1706
1707 AUTODETECT_LIBS="
1708     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1709     $HWACCEL_AUTODETECT_LIBRARY_LIST
1710     $THREADS_LIST
1711 "
1712
1713 ARCH_LIST="
1714     aarch64
1715     alpha
1716     arm
1717     avr32
1718     avr32_ap
1719     avr32_uc
1720     bfin
1721     ia64
1722     m68k
1723     mips
1724     mips64
1725     parisc
1726     ppc
1727     ppc64
1728     s390
1729     sh4
1730     sparc
1731     sparc64
1732     tilegx
1733     tilepro
1734     tomi
1735     x86
1736     x86_32
1737     x86_64
1738 "
1739
1740 ARCH_EXT_LIST_ARM="
1741     armv5te
1742     armv6
1743     armv6t2
1744     armv8
1745     neon
1746     vfp
1747     vfpv3
1748     setend
1749 "
1750
1751 ARCH_EXT_LIST_MIPS="
1752     mipsfpu
1753     mips32r2
1754     mips32r5
1755     mips64r2
1756     mips32r6
1757     mips64r6
1758     mipsdsp
1759     mipsdspr2
1760     msa
1761 "
1762
1763 ARCH_EXT_LIST_LOONGSON="
1764     loongson2
1765     loongson3
1766     mmi
1767 "
1768
1769 ARCH_EXT_LIST_X86_SIMD="
1770     aesni
1771     amd3dnow
1772     amd3dnowext
1773     avx
1774     avx2
1775     fma3
1776     fma4
1777     mmx
1778     mmxext
1779     sse
1780     sse2
1781     sse3
1782     sse4
1783     sse42
1784     ssse3
1785     xop
1786 "
1787
1788 ARCH_EXT_LIST_PPC="
1789     altivec
1790     dcbzl
1791     ldbrx
1792     power8
1793     ppc4xx
1794     vsx
1795 "
1796
1797 ARCH_EXT_LIST_X86="
1798     $ARCH_EXT_LIST_X86_SIMD
1799     cpunop
1800     i686
1801 "
1802
1803 ARCH_EXT_LIST="
1804     $ARCH_EXT_LIST_ARM
1805     $ARCH_EXT_LIST_PPC
1806     $ARCH_EXT_LIST_X86
1807     $ARCH_EXT_LIST_MIPS
1808     $ARCH_EXT_LIST_LOONGSON
1809 "
1810
1811 ARCH_FEATURES="
1812     aligned_stack
1813     fast_64bit
1814     fast_clz
1815     fast_cmov
1816     local_aligned_8
1817     local_aligned_16
1818     local_aligned_32
1819     simd_align_16
1820     simd_align_32
1821 "
1822
1823 BUILTIN_LIST="
1824     atomic_cas_ptr
1825     machine_rw_barrier
1826     MemoryBarrier
1827     mm_empty
1828     rdtsc
1829     sarestart
1830     sem_timedwait
1831     sync_val_compare_and_swap
1832 "
1833 HAVE_LIST_CMDLINE="
1834     inline_asm
1835     symver
1836     yasm
1837 "
1838
1839 HAVE_LIST_PUB="
1840     bigendian
1841     fast_unaligned
1842 "
1843
1844 HEADERS_LIST="
1845     alsa_asoundlib_h
1846     altivec_h
1847     arpa_inet_h
1848     asm_types_h
1849     cdio_paranoia_h
1850     cdio_paranoia_paranoia_h
1851     cuda_h
1852     dispatch_dispatch_h
1853     dev_bktr_ioctl_bt848_h
1854     dev_bktr_ioctl_meteor_h
1855     dev_ic_bt8xx_h
1856     dev_video_bktr_ioctl_bt848_h
1857     dev_video_meteor_ioctl_meteor_h
1858     direct_h
1859     dirent_h
1860     dlfcn_h
1861     d3d11_h
1862     dxva_h
1863     ES2_gl_h
1864     gsm_h
1865     io_h
1866     mach_mach_time_h
1867     machine_ioctl_bt848_h
1868     machine_ioctl_meteor_h
1869     malloc_h
1870     opencv2_core_core_c_h
1871     openjpeg_2_1_openjpeg_h
1872     openjpeg_2_0_openjpeg_h
1873     openjpeg_1_5_openjpeg_h
1874     OpenGL_gl3_h
1875     poll_h
1876     sndio_h
1877     soundcard_h
1878     stdatomic_h
1879     sys_mman_h
1880     sys_param_h
1881     sys_resource_h
1882     sys_select_h
1883     sys_soundcard_h
1884     sys_time_h
1885     sys_un_h
1886     sys_videoio_h
1887     termios_h
1888     udplite_h
1889     unistd_h
1890     valgrind_valgrind_h
1891     windows_h
1892     winsock2_h
1893 "
1894
1895 INTRINSICS_LIST="
1896     intrinsics_neon
1897 "
1898
1899 COMPLEX_FUNCS="
1900     cabs
1901     cexp
1902 "
1903
1904 MATH_FUNCS="
1905     atanf
1906     atan2f
1907     cbrt
1908     cbrtf
1909     copysign
1910     cosf
1911     erf
1912     exp2
1913     exp2f
1914     expf
1915     hypot
1916     isfinite
1917     isinf
1918     isnan
1919     ldexpf
1920     llrint
1921     llrintf
1922     log2
1923     log2f
1924     log10f
1925     lrint
1926     lrintf
1927     powf
1928     rint
1929     round
1930     roundf
1931     sinf
1932     trunc
1933     truncf
1934 "
1935
1936 SYSTEM_FUNCS="
1937     access
1938     aligned_malloc
1939     arc4random
1940     clock_gettime
1941     closesocket
1942     CommandLineToArgvW
1943     CoTaskMemFree
1944     CryptGenRandom
1945     dlopen
1946     fcntl
1947     flt_lim
1948     fork
1949     getaddrinfo
1950     gethrtime
1951     getopt
1952     GetProcessAffinityMask
1953     GetProcessMemoryInfo
1954     GetProcessTimes
1955     getrusage
1956     GetSystemTimeAsFileTime
1957     gettimeofday
1958     glob
1959     glXGetProcAddress
1960     gmtime_r
1961     inet_aton
1962     isatty
1963     jack_port_get_latency_range
1964     kbhit
1965     LoadLibrary
1966     localtime_r
1967     lstat
1968     lzo1x_999_compress
1969     mach_absolute_time
1970     MapViewOfFile
1971     memalign
1972     mkstemp
1973     mmap
1974     mprotect
1975     nanosleep
1976     PeekNamedPipe
1977     posix_memalign
1978     pthread_cancel
1979     sched_getaffinity
1980     SetConsoleTextAttribute
1981     SetConsoleCtrlHandler
1982     setmode
1983     setrlimit
1984     Sleep
1985     strerror_r
1986     sysconf
1987     sysctl
1988     usleep
1989     UTGetOSTypeFromString
1990     VirtualAlloc
1991     wglGetProcAddress
1992 "
1993
1994 TOOLCHAIN_FEATURES="
1995     as_dn_directive
1996     as_fpu_directive
1997     as_func
1998     as_object_arch
1999     asm_mod_q
2000     attribute_may_alias
2001     attribute_packed
2002     ebp_available
2003     ebx_available
2004     gnu_as
2005     gnu_windres
2006     ibm_asm
2007     inline_asm_direct_symbol_refs
2008     inline_asm_labels
2009     inline_asm_nonlocal_labels
2010     pragma_deprecated
2011     rsync_contimeout
2012     symver_asm_label
2013     symver_gnu_asm
2014     vfp_args
2015     xform_asm
2016     xmm_clobbers
2017 "
2018
2019 TYPES_LIST="
2020     CONDITION_VARIABLE_Ptr
2021     socklen_t
2022     struct_addrinfo
2023     struct_group_source_req
2024     struct_ip_mreq_source
2025     struct_ipv6_mreq
2026     struct_msghdr_msg_flags
2027     struct_pollfd
2028     struct_rusage_ru_maxrss
2029     struct_sctp_event_subscribe
2030     struct_sockaddr_in6
2031     struct_sockaddr_sa_len
2032     struct_sockaddr_storage
2033     struct_stat_st_mtim_tv_nsec
2034     struct_v4l2_frmivalenum_discrete
2035 "
2036
2037 HAVE_LIST="
2038     $ARCH_EXT_LIST
2039     $(add_suffix _external $ARCH_EXT_LIST)
2040     $(add_suffix _inline   $ARCH_EXT_LIST)
2041     $ARCH_FEATURES
2042     $ATOMICS_LIST
2043     $BUILTIN_LIST
2044     $COMPLEX_FUNCS
2045     $HAVE_LIST_CMDLINE
2046     $HAVE_LIST_PUB
2047     $HEADERS_LIST
2048     $INTRINSICS_LIST
2049     $MATH_FUNCS
2050     $SYSTEM_FUNCS
2051     $THREADS_LIST
2052     $TOOLCHAIN_FEATURES
2053     $TYPES_LIST
2054     atomics_native
2055     dos_paths
2056     dxva2_lib
2057     dxva2api_cobj
2058     libc_msvcrt
2059     libdc1394_1
2060     libdc1394_2
2061     makeinfo
2062     makeinfo_html
2063     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2064     perl
2065     pod2man
2066     sdl2
2067     section_data_rel_ro
2068     texi2html
2069     threads
2070     vaapi_drm
2071     vaapi_x11
2072     vdpau_x11
2073     winrt
2074     xlib
2075 "
2076
2077 # options emitted with CONFIG_ prefix but not available on the command line
2078 CONFIG_EXTRA="
2079     aandcttables
2080     ac3dsp
2081     audio_frame_queue
2082     audiodsp
2083     blockdsp
2084     bswapdsp
2085     cabac
2086     dirac_parse
2087     dvprofile
2088     exif
2089     faandct
2090     faanidct
2091     fdctdsp
2092     flacdsp
2093     fmtconvert
2094     frame_thread_encoder
2095     g722dsp
2096     golomb
2097     gplv3
2098     h263dsp
2099     h264chroma
2100     h264dsp
2101     h264parse
2102     h264pred
2103     h264qpel
2104     hpeldsp
2105     huffman
2106     huffyuvdsp
2107     huffyuvencdsp
2108     idctdsp
2109     iirfilter
2110     mdct15
2111     intrax8
2112     iso_media
2113     ividsp
2114     jpegtables
2115     lgplv3
2116     libx262
2117     llauddsp
2118     llviddsp
2119     llvidencdsp
2120     lpc
2121     lzf
2122     me_cmp
2123     mpeg_er
2124     mpegaudio
2125     mpegaudiodsp
2126     mpegvideo
2127     mpegvideoenc
2128     mss34dsp
2129     pixblockdsp
2130     qpeldsp
2131     qsv
2132     qsvdec
2133     qsvenc
2134     rangecoder
2135     riffdec
2136     riffenc
2137     rtpdec
2138     rtpenc_chain
2139     rv34dsp
2140     sinewin
2141     snappy
2142     srtp
2143     startcode
2144     texturedsp
2145     texturedspenc
2146     tpeldsp
2147     vaapi_encode
2148     vc1dsp
2149     videodsp
2150     vp3dsp
2151     vp56dsp
2152     vp8dsp
2153     vt_bt2020
2154     wma_freqs
2155     wmv2dsp
2156 "
2157
2158 CMDLINE_SELECT="
2159     $ARCH_EXT_LIST
2160     $CONFIG_LIST
2161     $HAVE_LIST_CMDLINE
2162     $THREADS_LIST
2163     asm
2164     cross_compile
2165     debug
2166     extra_warnings
2167     logging
2168     lto
2169     optimizations
2170     rpath
2171     stripping
2172 "
2173
2174 PATHS_LIST="
2175     bindir
2176     datadir
2177     docdir
2178     incdir
2179     libdir
2180     mandir
2181     pkgconfigdir
2182     prefix
2183     shlibdir
2184     install_name_dir
2185 "
2186
2187 CMDLINE_SET="
2188     $PATHS_LIST
2189     ar
2190     arch
2191     as
2192     assert_level
2193     build_suffix
2194     cc
2195     objcc
2196     cpu
2197     cross_prefix
2198     custom_allocator
2199     cxx
2200     dep_cc
2201     doxygen
2202     env
2203     extra_version
2204     gas
2205     host_cc
2206     host_cflags
2207     host_ld
2208     host_ldflags
2209     host_libs
2210     host_os
2211     install
2212     ld
2213     ln_s
2214     logfile
2215     malloc_prefix
2216     nm
2217     optflags
2218     pkg_config
2219     pkg_config_flags
2220     progs_suffix
2221     random_seed
2222     ranlib
2223     samples
2224     strip
2225     sws_max_filter_size
2226     sysinclude
2227     sysroot
2228     target_exec
2229     target_os
2230     target_path
2231     target_samples
2232     tempprefix
2233     toolchain
2234     valgrind
2235     yasmexe
2236 "
2237
2238 CMDLINE_APPEND="
2239     extra_cflags
2240     extra_cxxflags
2241     extra_objcflags
2242     host_cppflags
2243 "
2244
2245 # code dependency declarations
2246
2247 # architecture extensions
2248
2249 armv5te_deps="arm"
2250 armv6_deps="arm"
2251 armv6t2_deps="arm"
2252 armv8_deps="aarch64"
2253 neon_deps_any="aarch64 arm"
2254 intrinsics_neon_deps="neon"
2255 vfp_deps_any="aarch64 arm"
2256 vfpv3_deps="vfp"
2257 setend_deps="arm"
2258
2259 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2260
2261 loongson2_deps="mips"
2262 loongson3_deps="mips"
2263 mipsfpu_deps="mips"
2264 mipsdsp_deps="mips"
2265 mipsdspr2_deps="mips"
2266 mips32r2_deps="mips"
2267 mips32r5_deps="mips"
2268 mips32r6_deps="mips"
2269 mips64r2_deps="mips"
2270 mips64r6_deps="mips"
2271 msa_deps="mipsfpu"
2272 mmi_deps="mips"
2273
2274 altivec_deps="ppc"
2275 dcbzl_deps="ppc"
2276 ldbrx_deps="ppc"
2277 ppc4xx_deps="ppc"
2278 vsx_deps="altivec"
2279 power8_deps="vsx"
2280
2281 cpunop_deps="i686"
2282 x86_64_select="i686"
2283 x86_64_suggest="fast_cmov"
2284
2285 amd3dnow_deps="mmx"
2286 amd3dnowext_deps="amd3dnow"
2287 i686_deps="x86"
2288 mmx_deps="x86"
2289 mmxext_deps="mmx"
2290 sse_deps="mmxext"
2291 sse2_deps="sse"
2292 sse3_deps="sse2"
2293 ssse3_deps="sse3"
2294 sse4_deps="ssse3"
2295 sse42_deps="sse4"
2296 aesni_deps="sse42"
2297 avx_deps="sse42"
2298 xop_deps="avx"
2299 fma3_deps="avx"
2300 fma4_deps="avx"
2301 avx2_deps="avx"
2302
2303 mmx_external_deps="yasm"
2304 mmx_inline_deps="inline_asm"
2305 mmx_suggest="mmx_external mmx_inline"
2306
2307 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2308     eval dep=\$${ext}_deps
2309     eval ${ext}_external_deps='"${dep}_external"'
2310     eval ${ext}_inline_deps='"${dep}_inline"'
2311     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2312 done
2313
2314 aligned_stack_if_any="aarch64 ppc x86"
2315 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2316 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2317 fast_unaligned_if_any="aarch64 ppc x86"
2318 simd_align_16_if_any="altivec neon sse"
2319 simd_align_32_if_any="avx"
2320
2321 # system capabilities
2322 symver_if_any="symver_asm_label symver_gnu_asm"
2323 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
2324
2325 # threading support
2326 atomics_gcc_if="sync_val_compare_and_swap"
2327 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2328 atomics_win32_if="MemoryBarrier"
2329 atomics_native_if_any="$ATOMICS_LIST"
2330 w32threads_deps="atomics_native"
2331 threads_if_any="$THREADS_LIST"
2332
2333 # subsystems
2334 dct_select="rdft"
2335 dirac_parse_select="golomb"
2336 error_resilience_select="me_cmp"
2337 faandct_deps="faan fdctdsp"
2338 faanidct_deps="faan idctdsp"
2339 h264dsp_select="startcode"
2340 frame_thread_encoder_deps="encoders threads"
2341 intrax8_select="blockdsp idctdsp"
2342 mdct_select="fft"
2343 mdct15_select="fft"
2344 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2345 mpeg_er_select="error_resilience"
2346 mpegaudio_select="mpegaudiodsp"
2347 mpegaudiodsp_select="dct"
2348 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2349 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2350 vc1dsp_select="h264chroma qpeldsp startcode"
2351 rdft_select="fft"
2352
2353 # decoders / encoders
2354 aac_decoder_select="mdct15 mdct sinewin"
2355 aac_fixed_decoder_select="mdct sinewin"
2356 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2357 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2358 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2359 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2360 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2361 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2362 adpcm_g722_decoder_select="g722dsp"
2363 adpcm_g722_encoder_select="g722dsp"
2364 aic_decoder_select="golomb idctdsp"
2365 alac_encoder_select="lpc"
2366 als_decoder_select="bswapdsp"
2367 amrnb_decoder_select="lsp"
2368 amrwb_decoder_select="lsp"
2369 amv_decoder_select="sp5x_decoder exif"
2370 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2371 ape_decoder_select="bswapdsp llauddsp"
2372 apng_decoder_select="zlib"
2373 apng_encoder_select="llvidencdsp zlib"
2374 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2375 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2376 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2377 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2378 atrac1_decoder_select="mdct sinewin"
2379 atrac3_decoder_select="mdct"
2380 atrac3p_decoder_select="mdct sinewin"
2381 avrn_decoder_select="exif jpegtables"
2382 bink_decoder_select="blockdsp hpeldsp"
2383 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2384 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2385 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2386 cllc_decoder_select="bswapdsp"
2387 comfortnoise_encoder_select="lpc"
2388 cook_decoder_select="audiodsp mdct sinewin"
2389 cscd_decoder_select="lzo"
2390 cscd_decoder_suggest="zlib"
2391 dca_decoder_select="mdct"
2392 dds_decoder_select="texturedsp"
2393 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2394 dnxhd_decoder_select="blockdsp idctdsp"
2395 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2396 dvvideo_decoder_select="dvprofile idctdsp"
2397 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2398 dxa_decoder_select="zlib"
2399 dxv_decoder_select="lzf texturedsp"
2400 eac3_decoder_select="ac3_decoder"
2401 eac3_encoder_select="ac3_encoder"
2402 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2403 eatgq_decoder_select="aandcttables"
2404 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2405 exr_decoder_select="zlib"
2406 ffv1_decoder_select="golomb rangecoder"
2407 ffv1_encoder_select="rangecoder"
2408 ffvhuff_decoder_select="huffyuv_decoder"
2409 ffvhuff_encoder_select="huffyuv_encoder"
2410 fic_decoder_select="golomb"
2411 flac_decoder_select="flacdsp golomb"
2412 flac_encoder_select="bswapdsp flacdsp golomb lpc"
2413 flashsv2_decoder_select="zlib"
2414 flashsv2_encoder_select="zlib"
2415 flashsv_decoder_select="zlib"
2416 flashsv_encoder_select="zlib"
2417 flv_decoder_select="h263_decoder"
2418 flv_encoder_select="h263_encoder"
2419 fourxm_decoder_select="blockdsp bswapdsp"
2420 fraps_decoder_select="bswapdsp huffman"
2421 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2422 g729_decoder_select="audiodsp"
2423 h261_decoder_select="mpegvideo"
2424 h261_encoder_select="aandcttables mpegvideoenc"
2425 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2426 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2427 h263i_decoder_select="h263_decoder"
2428 h263p_decoder_select="h263_decoder"
2429 h263p_encoder_select="h263_encoder"
2430 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2431 h264_decoder_suggest="error_resilience"
2432 hap_decoder_select="snappy texturedsp"
2433 hap_encoder_deps="libsnappy"
2434 hap_encoder_select="texturedspenc"
2435 hevc_decoder_select="bswapdsp cabac golomb videodsp"
2436 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2437 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2438 iac_decoder_select="imc_decoder"
2439 imc_decoder_select="bswapdsp fft mdct sinewin"
2440 indeo3_decoder_select="hpeldsp"
2441 indeo4_decoder_select="ividsp"
2442 indeo5_decoder_select="ividsp"
2443 interplay_video_decoder_select="hpeldsp"
2444 jpegls_decoder_select="golomb mjpeg_decoder"
2445 jpegls_encoder_select="golomb"
2446 jv_decoder_select="blockdsp"
2447 lagarith_decoder_select="llviddsp"
2448 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2449 loco_decoder_select="golomb"
2450 magicyuv_decoder_select="llviddsp"
2451 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2452 metasound_decoder_select="lsp mdct sinewin"
2453 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2454 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2455 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2456 mjpegb_decoder_select="mjpeg_decoder"
2457 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2458 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2459 mlp_decoder_select="mlp_parser"
2460 motionpixels_decoder_select="bswapdsp"
2461 mp1_decoder_select="mpegaudio"
2462 mp1float_decoder_select="mpegaudio"
2463 mp2_decoder_select="mpegaudio"
2464 mp2float_decoder_select="mpegaudio"
2465 mp3_decoder_select="mpegaudio"
2466 mp3adu_decoder_select="mpegaudio"
2467 mp3adufloat_decoder_select="mpegaudio"
2468 mp3float_decoder_select="mpegaudio"
2469 mp3on4_decoder_select="mpegaudio"
2470 mp3on4float_decoder_select="mpegaudio"
2471 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2472 mpc8_decoder_select="mpegaudiodsp"
2473 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2474 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2475 mpegvideo_decoder_select="mpegvideo"
2476 mpeg1video_decoder_select="mpegvideo"
2477 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2478 mpeg2video_decoder_select="mpegvideo"
2479 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2480 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2481 mpeg4_encoder_select="h263_encoder"
2482 msa1_decoder_select="mss34dsp"
2483 msmpeg4v1_decoder_select="h263_decoder"
2484 msmpeg4v2_decoder_select="h263_decoder"
2485 msmpeg4v2_encoder_select="h263_encoder"
2486 msmpeg4v3_decoder_select="h263_decoder"
2487 msmpeg4v3_encoder_select="h263_encoder"
2488 mss2_decoder_select="vc1_decoder mpegvideo"
2489 mts2_decoder_select="mss34dsp"
2490 mxpeg_decoder_select="mjpeg_decoder"
2491 nellymoser_decoder_select="mdct sinewin"
2492 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2493 nuv_decoder_select="idctdsp lzo"
2494 on2avc_decoder_select="mdct"
2495 opus_decoder_deps="swresample"
2496 opus_decoder_select="mdct15"
2497 opus_encoder_select="audio_frame_queue mdct15"
2498 png_decoder_select="zlib"
2499 png_encoder_select="llvidencdsp zlib"
2500 prores_decoder_select="blockdsp idctdsp"
2501 prores_encoder_select="fdctdsp"
2502 qcelp_decoder_select="lsp"
2503 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2504 ra_144_decoder_select="audiodsp"
2505 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2506 ralf_decoder_select="golomb"
2507 rawvideo_decoder_select="bswapdsp"
2508 rscc_decoder_select="zlib"
2509 rtjpeg_decoder_select="me_cmp"
2510 rv10_decoder_select="h263_decoder"
2511 rv10_encoder_select="h263_encoder"
2512 rv20_decoder_select="h263_decoder"
2513 rv20_encoder_select="h263_encoder"
2514 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2515 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2516 screenpresso_decoder_select="zlib"
2517 shorten_decoder_select="golomb bswapdsp"
2518 sipr_decoder_select="lsp"
2519 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2520 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2521 sonic_decoder_select="golomb rangecoder"
2522 sonic_encoder_select="golomb rangecoder"
2523 sonic_ls_encoder_select="golomb rangecoder"
2524 sp5x_decoder_select="mjpeg_decoder"
2525 svq1_decoder_select="hpeldsp"
2526 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2527 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2528 svq3_decoder_suggest="zlib"
2529 tak_decoder_select="audiodsp"
2530 tdsc_decoder_select="zlib mjpeg_decoder"
2531 theora_decoder_select="vp3_decoder"
2532 thp_decoder_select="mjpeg_decoder"
2533 tiff_decoder_suggest="zlib lzma"
2534 tiff_encoder_suggest="zlib"
2535 truehd_decoder_select="mlp_parser"
2536 truemotion2_decoder_select="bswapdsp"
2537 truespeech_decoder_select="bswapdsp"
2538 tscc_decoder_select="zlib"
2539 twinvq_decoder_select="mdct lsp sinewin"
2540 txd_decoder_select="texturedsp"
2541 utvideo_decoder_select="bswapdsp llviddsp"
2542 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2543 vble_decoder_select="llviddsp"
2544 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2545 vc1_qsv_decoder_deps="libmfx"
2546 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel"
2547 vc1image_decoder_select="vc1_decoder"
2548 vorbis_decoder_select="mdct"
2549 vorbis_encoder_select="mdct"
2550 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2551 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2552 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2553 vp6a_decoder_select="vp6_decoder"
2554 vp6f_decoder_select="vp6_decoder"
2555 vp7_decoder_select="h264pred videodsp vp8dsp"
2556 vp8_decoder_select="h264pred videodsp vp8dsp"
2557 vp9_decoder_select="videodsp vp9_parser"
2558 webp_decoder_select="vp8_decoder exif"
2559 wmalossless_decoder_select="llauddsp"
2560 wmapro_decoder_select="mdct sinewin wma_freqs"
2561 wmav1_decoder_select="mdct sinewin wma_freqs"
2562 wmav1_encoder_select="mdct sinewin wma_freqs"
2563 wmav2_decoder_select="mdct sinewin wma_freqs"
2564 wmav2_encoder_select="mdct sinewin wma_freqs"
2565 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2566 wmv1_decoder_select="h263_decoder"
2567 wmv1_encoder_select="h263_encoder"
2568 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2569 wmv2_encoder_select="h263_encoder wmv2dsp"
2570 wmv3_decoder_select="vc1_decoder"
2571 wmv3image_decoder_select="wmv3_decoder"
2572 xma1_decoder_select="wmapro_decoder"
2573 xma2_decoder_select="wmapro_decoder"
2574 zerocodec_decoder_select="zlib"
2575 zlib_decoder_select="zlib"
2576 zlib_encoder_select="zlib"
2577 zmbv_decoder_select="zlib"
2578 zmbv_encoder_select="zlib"
2579
2580 # platform codecs
2581 audiotoolbox_deps="AudioToolbox_AudioToolbox_h"
2582 audiotoolbox_extralibs="-framework CoreFoundation -framework AudioToolbox -framework CoreMedia"
2583
2584 # hardware accelerators
2585 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2586 cuda_deps_any="dlopen LoadLibrary"
2587 cuvid_deps="cuda"
2588 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2589 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2590 dxva2_extralibs="-luser32"
2591 vaapi_deps="va_va_h"
2592 vda_framework_deps="VideoDecodeAcceleration_VDADecoder_h"
2593 vda_framework_extralibs="-framework VideoDecodeAcceleration"
2594 vda_deps="vda_framework pthreads"
2595 vda_extralibs="-framework CoreFoundation -framework QuartzCore"
2596 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2597 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2598 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2599 xvmc_deps="X11_extensions_XvMClib_h"
2600
2601 h263_vaapi_hwaccel_deps="vaapi"
2602 h263_vaapi_hwaccel_select="h263_decoder"
2603 h263_videotoolbox_hwaccel_deps="videotoolbox"
2604 h263_videotoolbox_hwaccel_select="h263_decoder"
2605 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2606 h264_cuvid_hwaccel_deps="cuda cuvid"
2607 h264_d3d11va_hwaccel_deps="d3d11va"
2608 h264_d3d11va_hwaccel_select="h264_decoder"
2609 h264_dxva2_hwaccel_deps="dxva2"
2610 h264_dxva2_hwaccel_select="h264_decoder"
2611 h264_mediacodec_decoder_deps="mediacodec"
2612 h264_mediacodec_hwaccel_deps="mediacodec"
2613 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2614 h264_mmal_decoder_deps="mmal"
2615 h264_mmal_decoder_select="mmal"
2616 h264_mmal_hwaccel_deps="mmal"
2617 h264_omx_encoder_deps="omx"
2618 h264_qsv_hwaccel_deps="libmfx"
2619 h264_vaapi_hwaccel_deps="vaapi"
2620 h264_vaapi_hwaccel_select="h264_decoder"
2621 h264_vda_decoder_deps="vda"
2622 h264_vda_decoder_select="h264_decoder"
2623 h264_vda_hwaccel_deps="vda"
2624 h264_vda_hwaccel_select="h264_decoder"
2625 h264_vda_old_hwaccel_deps="vda"
2626 h264_vda_old_hwaccel_select="h264_decoder"
2627 h264_vdpau_decoder_deps="vdpau"
2628 h264_vdpau_decoder_select="h264_decoder"
2629 h264_vdpau_hwaccel_deps="vdpau"
2630 h264_vdpau_hwaccel_select="h264_decoder"
2631 h264_videotoolbox_hwaccel_deps="videotoolbox"
2632 h264_videotoolbox_hwaccel_select="h264_decoder"
2633 hevc_cuvid_hwaccel_deps="cuda cuvid"
2634 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2635 hevc_d3d11va_hwaccel_select="hevc_decoder"
2636 hevc_mediacodec_decoder_deps="mediacodec"
2637 hevc_mediacodec_hwaccel_deps="mediacodec"
2638 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2639 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2640 hevc_dxva2_hwaccel_select="hevc_decoder"
2641 hevc_qsv_hwaccel_deps="libmfx"
2642 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2643 hevc_vaapi_hwaccel_select="hevc_decoder"
2644 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2645 hevc_vdpau_hwaccel_select="hevc_decoder"
2646 mjpeg_cuvid_hwaccel_deps="cuda cuvid"
2647 mpeg_vdpau_decoder_deps="vdpau"
2648 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2649 mpeg_xvmc_hwaccel_deps="xvmc"
2650 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2651 mpeg1_cuvid_hwaccel_deps="cuda cuvid"
2652 mpeg1_vdpau_decoder_deps="vdpau"
2653 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2654 mpeg1_vdpau_hwaccel_deps="vdpau"
2655 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2656 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2657 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2658 mpeg1_xvmc_hwaccel_deps="xvmc"
2659 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2660 mpeg2_crystalhd_decoder_select="crystalhd"
2661 mpeg2_cuvid_hwaccel_deps="cuda cuvid"
2662 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2663 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2664 mpeg2_dxva2_hwaccel_deps="dxva2"
2665 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2666 mpeg2_mmal_decoder_deps="mmal"
2667 mpeg2_mmal_decoder_select="mmal"
2668 mpeg2_mmal_hwaccel_deps="mmal"
2669 mpeg2_qsv_hwaccel_deps="libmfx"
2670 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2671 mpeg2_vaapi_hwaccel_deps="vaapi"
2672 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2673 mpeg2_vdpau_hwaccel_deps="vdpau"
2674 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2675 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2676 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2677 mpeg2_xvmc_hwaccel_deps="xvmc"
2678 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2679 mpeg4_crystalhd_decoder_select="crystalhd"
2680 mpeg4_cuvid_hwaccel_deps="cuda cuvid"
2681 mpeg4_mediacodec_decoder_deps="mediacodec"
2682 mpeg4_mediacodec_hwaccel_deps="mediacodec"
2683 mpeg4_mmal_decoder_deps="mmal"
2684 mpeg4_mmal_decoder_select="mmal"
2685 mpeg4_mmal_hwaccel_deps="mmal"
2686 mpeg4_omx_encoder_deps="omx"
2687 mpeg4_vaapi_hwaccel_deps="vaapi"
2688 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2689 mpeg4_vdpau_decoder_deps="vdpau"
2690 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2691 mpeg4_vdpau_hwaccel_deps="vdpau"
2692 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2693 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2694 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2695 msmpeg4_crystalhd_decoder_select="crystalhd"
2696 vc1_crystalhd_decoder_select="crystalhd"
2697 vc1_cuvid_hwaccel_deps="cuda cuvid"
2698 vc1_d3d11va_hwaccel_deps="d3d11va"
2699 vc1_d3d11va_hwaccel_select="vc1_decoder"
2700 vc1_dxva2_hwaccel_deps="dxva2"
2701 vc1_dxva2_hwaccel_select="vc1_decoder"
2702 vc1_mmal_decoder_deps="mmal"
2703 vc1_mmal_decoder_select="mmal"
2704 vc1_mmal_hwaccel_deps="mmal"
2705 vc1_qsv_hwaccel_deps="libmfx"
2706 vc1_qsv_hwaccel_select="qsvdec_vc1"
2707 vc1_vaapi_hwaccel_deps="vaapi"
2708 vc1_vaapi_hwaccel_select="vc1_decoder"
2709 vc1_vdpau_decoder_deps="vdpau"
2710 vc1_vdpau_decoder_select="vc1_decoder"
2711 vc1_vdpau_hwaccel_deps="vdpau"
2712 vc1_vdpau_hwaccel_select="vc1_decoder"
2713 vp8_cuvid_hwaccel_deps="cuda cuvid"
2714 vp9_cuvid_hwaccel_deps="cuda cuvid"
2715 vp8_mediacodec_decoder_deps="mediacodec"
2716 vp8_mediacodec_hwaccel_deps="mediacodec"
2717 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2718 vp9_d3d11va_hwaccel_select="vp9_decoder"
2719 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2720 vp9_dxva2_hwaccel_select="vp9_decoder"
2721 vp9_mediacodec_decoder_deps="mediacodec"
2722 vp9_mediacodec_hwaccel_deps="mediacodec"
2723 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2724 vp9_vaapi_hwaccel_select="vp9_decoder"
2725 wmv3_crystalhd_decoder_select="crystalhd"
2726 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2727 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2728 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2729 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2730 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2731
2732 # hardware-accelerated codecs
2733 omx_deps="dlopen pthreads"
2734 omx_extralibs='$ldl'
2735 qsvdec_select="qsv"
2736 qsvenc_select="qsv"
2737 vaapi_encode_deps="vaapi"
2738
2739 hwupload_cuda_filter_deps="cuda"
2740 scale_npp_filter_deps="cuda libnpp"
2741
2742 nvenc_deps="cuda"
2743 nvenc_deps_any="dlopen LoadLibrary"
2744 nvenc_encoder_deps="nvenc"
2745 h264_cuvid_decoder_deps="cuda cuvid"
2746 h264_cuvid_decoder_select="h264_mp4toannexb_bsf h264_cuvid_hwaccel"
2747 h264_nvenc_encoder_deps="nvenc"
2748 h264_qsv_decoder_deps="libmfx"
2749 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2750 h264_qsv_encoder_deps="libmfx"
2751 h264_qsv_encoder_select="qsvenc"
2752 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2753 h264_vaapi_encoder_select="vaapi_encode golomb"
2754
2755 hevc_cuvid_decoder_deps="cuda cuvid"
2756 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf hevc_cuvid_hwaccel"
2757 hevc_nvenc_encoder_deps="nvenc"
2758 hevc_qsv_decoder_deps="libmfx"
2759 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2760 hevc_qsv_encoder_deps="libmfx"
2761 hevc_qsv_encoder_select="qsvenc"
2762 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2763 hevc_vaapi_encoder_select="vaapi_encode golomb"
2764 mjpeg_cuvid_decoder_deps="cuda cuvid"
2765 mjpeg_cuvid_decoder_select="mjpeg_cuvid_hwaccel"
2766 mpeg1_cuvid_decoder_deps="cuda cuvid"
2767 mpeg1_cuvid_decoder_select="mpeg1_cuvid_hwaccel"
2768 mpeg2_cuvid_decoder_deps="cuda cuvid"
2769 mpeg2_cuvid_decoder_select="mpeg2_cuvid_hwaccel"
2770 mpeg2_qsv_decoder_deps="libmfx"
2771 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2772 mpeg2_qsv_encoder_deps="libmfx"
2773 mpeg2_qsv_encoder_select="qsvenc"
2774 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2775 mpeg2_vaapi_encoder_select="vaapi_encode"
2776 mpeg4_cuvid_decoder_deps="cuda cuvid"
2777 mpeg4_cuvid_decoder_select="mpeg4_cuvid_hwaccel"
2778 nvenc_h264_encoder_deps="nvenc"
2779 nvenc_hevc_encoder_deps="nvenc"
2780
2781 vc1_cuvid_decoder_deps="cuda cuvid"
2782 vc1_cuvid_decoder_select="vc1_cuvid_hwaccel"
2783 vp8_cuvid_decoder_deps="cuda cuvid"
2784 vp8_cuvid_decoder_select="vp8_cuvid_hwaccel"
2785 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2786 vp8_vaapi_encoder_select="vaapi_encode"
2787 vp9_cuvid_decoder_deps="cuda cuvid"
2788 vp9_cuvid_decoder_select="vp9_cuvid_hwaccel"
2789
2790 # parsers
2791 h264_parser_select="golomb h264dsp h264parse"
2792 hevc_parser_select="golomb"
2793 mpegvideo_parser_select="mpegvideo"
2794 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2795 vc1_parser_select="vc1dsp"
2796
2797 # bitstream_filters
2798 mjpeg2jpeg_bsf_select="jpegtables"
2799
2800 # external libraries
2801 aac_at_decoder_deps="audiotoolbox"
2802 ac3_at_decoder_deps="audiotoolbox"
2803 ac3_at_decoder_select="ac3_parser"
2804 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2805 alac_at_decoder_deps="audiotoolbox"
2806 amr_nb_at_decoder_deps="audiotoolbox"
2807 avisynth_deps_any="dlopen LoadLibrary"
2808 avisynth_demuxer_deps="avisynth"
2809 avisynth_demuxer_select="riffdec"
2810 eac3_at_decoder_deps="audiotoolbox"
2811 eac3_at_decoder_select="ac3_parser"
2812 gsm_ms_at_decoder_deps="audiotoolbox"
2813 ilbc_at_decoder_deps="audiotoolbox"
2814 mp1_at_decoder_deps="audiotoolbox"
2815 mp2_at_decoder_deps="audiotoolbox"
2816 mp3_at_decoder_deps="audiotoolbox"
2817 pcm_alaw_at_decoder_deps="audiotoolbox"
2818 pcm_mulaw_at_decoder_deps="audiotoolbox"
2819 qdmc_at_decoder_deps="audiotoolbox"
2820 qdm2_at_decoder_deps="audiotoolbox"
2821 aac_at_encoder_deps="audiotoolbox"
2822 aac_at_encoder_select="audio_frame_queue"
2823 alac_at_encoder_deps="audiotoolbox"
2824 alac_at_encoder_select="audio_frame_queue"
2825 ilbc_at_encoder_deps="audiotoolbox"
2826 ilbc_at_encoder_select="audio_frame_queue"
2827 pcm_alaw_at_encoder_deps="audiotoolbox"
2828 pcm_alaw_at_encoder_select="audio_frame_queue"
2829 pcm_mulaw_at_encoder_deps="audiotoolbox"
2830 pcm_mulaw_at_encoder_select="audio_frame_queue"
2831 chromaprint_muxer_deps="chromaprint"
2832 h264_videotoolbox_encoder_deps="videotoolbox_encoder pthreads"
2833 libcelt_decoder_deps="libcelt"
2834 libfdk_aac_decoder_deps="libfdk_aac"
2835 libfdk_aac_encoder_deps="libfdk_aac"
2836 libfdk_aac_encoder_select="audio_frame_queue"
2837 libgme_demuxer_deps="libgme"
2838 libgsm_decoder_deps="libgsm"
2839 libgsm_encoder_deps="libgsm"
2840 libgsm_ms_decoder_deps="libgsm"
2841 libgsm_ms_encoder_deps="libgsm"
2842 libilbc_decoder_deps="libilbc"
2843 libilbc_encoder_deps="libilbc"
2844 libkvazaar_encoder_deps="libkvazaar"
2845 libmodplug_demuxer_deps="libmodplug"
2846 libmp3lame_encoder_deps="libmp3lame"
2847 libmp3lame_encoder_select="audio_frame_queue"
2848 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2849 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2850 libopencore_amrnb_encoder_select="audio_frame_queue"
2851 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2852 libopenh264_decoder_deps="libopenh264"
2853 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2854 libopenh264_encoder_deps="libopenh264"
2855 libopenjpeg_decoder_deps="libopenjpeg"
2856 libopenjpeg_encoder_deps="libopenjpeg"
2857 libopenmpt_demuxer_deps="libopenmpt"
2858 libopus_decoder_deps="libopus"
2859 libopus_encoder_deps="libopus"
2860 libopus_encoder_select="audio_frame_queue"
2861 libschroedinger_decoder_deps="libschroedinger"
2862 libschroedinger_encoder_deps="libschroedinger"
2863 libshine_encoder_deps="libshine"
2864 libshine_encoder_select="audio_frame_queue"
2865 libspeex_decoder_deps="libspeex"
2866 libspeex_encoder_deps="libspeex"
2867 libspeex_encoder_select="audio_frame_queue"
2868 libtheora_encoder_deps="libtheora"
2869 libtwolame_encoder_deps="libtwolame"
2870 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2871 libvorbis_decoder_deps="libvorbis"
2872 libvorbis_encoder_deps="libvorbis"
2873 libvorbis_encoder_select="audio_frame_queue"
2874 libvpx_vp8_decoder_deps="libvpx"
2875 libvpx_vp8_encoder_deps="libvpx"
2876 libvpx_vp9_decoder_deps="libvpx"
2877 libvpx_vp9_encoder_deps="libvpx"
2878 libwavpack_encoder_deps="libwavpack"
2879 libwebp_encoder_deps="libwebp"
2880 libwebp_anim_encoder_deps="libwebp"
2881 libx262_encoder_deps="libx262"
2882 libx264_encoder_deps="libx264"
2883 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2884 libx264rgb_encoder_select="libx264_encoder"
2885 libx265_encoder_deps="libx265"
2886 libxavs_encoder_deps="libxavs"
2887 libxvid_encoder_deps="libxvid"
2888 libzvbi_teletext_decoder_deps="libzvbi"
2889 videotoolbox_deps="VideoToolbox_VideoToolbox_h"
2890 videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework CoreVideo"
2891 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2892 videotoolbox_encoder_suggest="vda_framework vt_bt2020"
2893 vt_bt2020_deps="kCVImageBufferColorPrimaries_ITU_R_2020"
2894
2895 # demuxers / muxers
2896 ac3_demuxer_select="ac3_parser"
2897 aiff_muxer_select="iso_media"
2898 asf_demuxer_select="riffdec"
2899 asf_o_demuxer_select="riffdec"
2900 asf_muxer_select="riffenc"
2901 asf_stream_muxer_select="asf_muxer"
2902 avi_demuxer_select="iso_media riffdec exif"
2903 avi_muxer_select="riffenc"
2904 caf_demuxer_select="iso_media riffdec"
2905 caf_muxer_select="iso_media"
2906 dash_muxer_select="mp4_muxer"
2907 dirac_demuxer_select="dirac_parser"
2908 dts_demuxer_select="dca_parser"
2909 dtshd_demuxer_select="dca_parser"
2910 dv_demuxer_select="dvprofile"
2911 dv_muxer_select="dvprofile"
2912 dxa_demuxer_select="riffdec"
2913 eac3_demuxer_select="ac3_parser"
2914 f4v_muxer_select="mov_muxer"
2915 fifo_muxer_deps="threads"
2916 flac_demuxer_select="flac_parser"
2917 hds_muxer_select="flv_muxer"
2918 hls_muxer_select="mpegts_muxer"
2919 image2_alias_pix_demuxer_select="image2_demuxer"
2920 image2_brender_pix_demuxer_select="image2_demuxer"
2921 ipod_muxer_select="mov_muxer"
2922 ismv_muxer_select="mov_muxer"
2923 libnut_demuxer_deps="libnut"
2924 libnut_muxer_deps="libnut"
2925 matroska_audio_muxer_select="matroska_muxer"
2926 matroska_demuxer_select="iso_media riffdec"
2927 matroska_demuxer_suggest="bzlib lzo zlib"
2928 matroska_muxer_select="iso_media riffenc"
2929 mmf_muxer_select="riffenc"
2930 mov_demuxer_select="iso_media riffdec"
2931 mov_demuxer_suggest="zlib"
2932 mov_muxer_select="iso_media riffenc rtpenc_chain"
2933 mp3_demuxer_select="mpegaudio_parser"
2934 mp4_muxer_select="mov_muxer"
2935 mpegts_demuxer_select="iso_media"
2936 mpegts_muxer_select="adts_muxer latm_muxer"
2937 mpegtsraw_demuxer_select="mpegts_demuxer"
2938 mxf_d10_muxer_select="mxf_muxer"
2939 mxf_opatom_muxer_select="mxf_muxer"
2940 nut_muxer_select="riffenc"
2941 nuv_demuxer_select="riffdec"
2942 oga_muxer_select="ogg_muxer"
2943 ogg_demuxer_select="dirac_parse"
2944 ogv_muxer_select="ogg_muxer"
2945 opus_muxer_select="ogg_muxer"
2946 psp_muxer_select="mov_muxer"
2947 rtp_demuxer_select="sdp_demuxer"
2948 rtp_muxer_select="golomb"
2949 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2950 rtsp_demuxer_select="http_protocol rtpdec"
2951 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2952 sap_demuxer_select="sdp_demuxer"
2953 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2954 sdp_demuxer_select="rtpdec"
2955 smoothstreaming_muxer_select="ismv_muxer"
2956 spdif_muxer_select="aac_parser"
2957 spx_muxer_select="ogg_muxer"
2958 swf_demuxer_suggest="zlib"
2959 tak_demuxer_select="tak_parser"
2960 tg2_muxer_select="mov_muxer"
2961 tgp_muxer_select="mov_muxer"
2962 vobsub_demuxer_select="mpegps_demuxer"
2963 w64_demuxer_select="wav_demuxer"
2964 w64_muxer_select="wav_muxer"
2965 wav_demuxer_select="riffdec"
2966 wav_muxer_select="riffenc"
2967 webm_muxer_select="iso_media riffenc"
2968 webm_dash_manifest_demuxer_select="matroska_demuxer"
2969 wtv_demuxer_select="mpegts_demuxer riffdec"
2970 wtv_muxer_select="mpegts_muxer riffenc"
2971 xmv_demuxer_select="riffdec"
2972 xwma_demuxer_select="riffdec"
2973
2974 # indevs / outdevs
2975 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2976 alsa_outdev_deps="alsa_asoundlib_h"
2977 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2978 avfoundation_indev_select="avfoundation"
2979 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2980 caca_outdev_deps="libcaca"
2981 decklink_indev_deps="decklink pthreads"
2982 decklink_indev_extralibs="-lstdc++"
2983 decklink_outdev_deps="decklink pthreads"
2984 decklink_outdev_extralibs="-lstdc++"
2985 dshow_indev_deps="IBaseFilter"
2986 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
2987 dv1394_indev_deps="dv1394"
2988 dv1394_indev_select="dv_demuxer"
2989 fbdev_indev_deps="linux_fb_h"
2990 fbdev_outdev_deps="linux_fb_h"
2991 gdigrab_indev_deps="CreateDIBSection"
2992 gdigrab_indev_extralibs="-lgdi32"
2993 gdigrab_indev_select="bmp_decoder"
2994 iec61883_indev_deps="libiec61883"
2995 jack_indev_deps="jack_jack_h"
2996 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2997 lavfi_indev_deps="avfilter"
2998 libcdio_indev_deps="libcdio"
2999 libdc1394_indev_deps="libdc1394"
3000 libv4l2_indev_deps="libv4l2"
3001 openal_indev_deps="openal"
3002 opengl_outdev_deps="opengl"
3003 oss_indev_deps_any="soundcard_h sys_soundcard_h"
3004 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
3005 pulse_indev_deps="libpulse"
3006 pulse_outdev_deps="libpulse"
3007 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
3008 qtkit_indev_select="qtkit"
3009 sdl2_outdev_deps="sdl2"
3010 sndio_indev_deps="sndio_h"
3011 sndio_outdev_deps="sndio_h"
3012 v4l_indev_deps="linux_videodev_h"
3013 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3014 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3015 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
3016 vfwcap_indev_extralibs="-lavicap32"
3017 xcbgrab_indev_deps="libxcb"
3018 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3019 xv_outdev_extralibs="-lXv -lX11 -lXext"
3020
3021 # protocols
3022 async_protocol_deps="threads"
3023 bluray_protocol_deps="libbluray"
3024 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
3025 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3026 ffrtmpcrypt_protocol_select="tcp_protocol"
3027 ffrtmphttp_protocol_deps="!librtmp_protocol"
3028 ffrtmphttp_protocol_select="http_protocol"
3029 ftp_protocol_select="tcp_protocol"
3030 gopher_protocol_select="network"
3031 http_protocol_select="tcp_protocol"
3032 httpproxy_protocol_select="tcp_protocol"
3033 https_protocol_select="tls_protocol"
3034 icecast_protocol_select="http_protocol"
3035 librtmp_protocol_deps="librtmp"
3036 librtmpe_protocol_deps="librtmp"
3037 librtmps_protocol_deps="librtmp"
3038 librtmpt_protocol_deps="librtmp"
3039 librtmpte_protocol_deps="librtmp"
3040 libsmbclient_protocol_deps="libsmbclient gplv3"
3041 libssh_protocol_deps="libssh"
3042 mmsh_protocol_select="http_protocol"
3043 mmst_protocol_select="network"
3044 rtmp_protocol_deps="!librtmp_protocol"
3045 rtmp_protocol_select="tcp_protocol"
3046 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3047 rtmps_protocol_deps="!librtmp_protocol"
3048 rtmps_protocol_select="tls_protocol"
3049 rtmpt_protocol_select="ffrtmphttp_protocol"
3050 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3051 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3052 rtp_protocol_select="udp_protocol"
3053 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3054 sctp_protocol_select="network"
3055 srtp_protocol_select="rtp_protocol srtp"
3056 tcp_protocol_select="network"
3057 tls_gnutls_protocol_deps="gnutls !tls_schannel_protocol !tls_securetransport_protocol"
3058 tls_gnutls_protocol_select="tcp_protocol"
3059 tls_openssl_protocol_deps="openssl !tls_schannel_protocol !tls_securetransport_protocol !tls_gnutls_protocol"
3060 tls_openssl_protocol_select="tcp_protocol"
3061 tls_schannel_protocol_deps="schannel"
3062 tls_schannel_protocol_select="tcp_protocol"
3063 tls_securetransport_protocol_deps="securetransport"
3064 tls_securetransport_protocol_select="tcp_protocol"
3065 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
3066 udp_protocol_select="network"
3067 udplite_protocol_select="network"
3068 unix_protocol_deps="sys_un_h"
3069 unix_protocol_select="network"
3070
3071 # filters
3072 afftfilt_filter_deps="avcodec"
3073 afftfilt_filter_select="fft"
3074 amovie_filter_deps="avcodec avformat"
3075 aresample_filter_deps="swresample"
3076 ass_filter_deps="libass"
3077 asyncts_filter_deps="avresample"
3078 atempo_filter_deps="avcodec"
3079 atempo_filter_select="rdft"
3080 azmq_filter_deps="libzmq"
3081 blackframe_filter_deps="gpl"
3082 boxblur_filter_deps="gpl"
3083 bs2b_filter_deps="libbs2b"
3084 colormatrix_filter_deps="gpl"
3085 cover_rect_filter_deps="avcodec avformat gpl"
3086 cropdetect_filter_deps="gpl"
3087 deinterlace_qsv_filter_deps="libmfx"
3088 deinterlace_vaapi_filter_deps="vaapi"
3089 delogo_filter_deps="gpl"
3090 deshake_filter_select="pixelutils"
3091 drawtext_filter_deps="libfreetype"
3092 eq_filter_deps="gpl"
3093 fftfilt_filter_deps="avcodec"
3094 fftfilt_filter_select="rdft"
3095 find_rect_filter_deps="avcodec avformat gpl"
3096 firequalizer_filter_deps="avcodec"
3097 firequalizer_filter_select="rdft"
3098 flite_filter_deps="libflite"
3099 framerate_filter_select="pixelutils"
3100 frei0r_filter_deps="frei0r dlopen"
3101 frei0r_src_filter_deps="frei0r dlopen"
3102 fspp_filter_deps="gpl"
3103 geq_filter_deps="gpl"
3104 histeq_filter_deps="gpl"
3105 hqdn3d_filter_deps="gpl"
3106 interlace_filter_deps="gpl"
3107 kerndeint_filter_deps="gpl"
3108 ladspa_filter_deps="ladspa dlopen"
3109 mcdeint_filter_deps="avcodec gpl"
3110 movie_filter_deps="avcodec avformat"
3111 mpdecimate_filter_deps="gpl"
3112 mpdecimate_filter_select="pixelutils"
3113 mptestsrc_filter_deps="gpl"
3114 negate_filter_deps="lut_filter"
3115 nnedi_filter_deps="gpl"
3116 ocr_filter_deps="libtesseract"
3117 ocv_filter_deps="libopencv"
3118 owdenoise_filter_deps="gpl"
3119 pan_filter_deps="swresample"
3120 perspective_filter_deps="gpl"
3121 phase_filter_deps="gpl"
3122 pp7_filter_deps="gpl"
3123 pp_filter_deps="gpl postproc"
3124 pullup_filter_deps="gpl"
3125 removelogo_filter_deps="avcodec avformat swscale"
3126 repeatfields_filter_deps="gpl"
3127 resample_filter_deps="avresample"
3128 rubberband_filter_deps="librubberband"
3129 sab_filter_deps="gpl swscale"
3130 scale2ref_filter_deps="swscale"
3131 scale_filter_deps="swscale"
3132 scale_qsv_filter_deps="libmfx"
3133 select_filter_select="pixelutils"
3134 showcqt_filter_deps="avcodec avformat swscale"
3135 showcqt_filter_select="fft"
3136 showfreqs_filter_deps="avcodec"
3137 showfreqs_filter_select="fft"
3138 showspectrum_filter_deps="avcodec"
3139 showspectrum_filter_select="fft"
3140 showspectrumpic_filter_deps="avcodec"
3141 showspectrumpic_filter_select="fft"
3142 signature_filter_deps="gpl avcodec avformat"
3143 smartblur_filter_deps="gpl swscale"
3144 sofalizer_filter_deps="netcdf avcodec"
3145 sofalizer_filter_select="fft"
3146 spectrumsynth_filter_deps="avcodec"
3147 spectrumsynth_filter_select="fft"
3148 spp_filter_deps="gpl avcodec"
3149 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3150 stereo3d_filter_deps="gpl"
3151 subtitles_filter_deps="avformat avcodec libass"
3152 super2xsai_filter_deps="gpl"
3153 pixfmts_super2xsai_test_deps="super2xsai_filter"
3154 tinterlace_filter_deps="gpl"
3155 tinterlace_merge_test_deps="tinterlace_filter"
3156 tinterlace_pad_test_deps="tinterlace_filter"
3157 uspp_filter_deps="gpl avcodec"
3158 vaguedenoiser_filter_deps="gpl"
3159 vidstabdetect_filter_deps="libvidstab"
3160 vidstabtransform_filter_deps="libvidstab"
3161 zmq_filter_deps="libzmq"
3162 zoompan_filter_deps="swscale"
3163 zscale_filter_deps="libzimg"
3164 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3165
3166 # examples
3167 avio_dir_cmd_deps="avformat avutil"
3168 avio_reading_deps="avformat avcodec avutil"
3169 decoding_encoding_example_deps="avcodec avformat avutil"
3170 demuxing_decoding_example_deps="avcodec avformat avutil"
3171 extract_mvs_example_deps="avcodec avformat avutil"
3172 filter_audio_example_deps="avfilter avutil"
3173 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3174 filtering_video_example_deps="avfilter avcodec avformat avutil"
3175 http_multiclient_example_deps="avformat avutil fork"
3176 metadata_example_deps="avformat avutil"
3177 muxing_example_deps="avcodec avformat avutil swscale"
3178 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
3179 remuxing_example_deps="avcodec avformat avutil"
3180 resampling_audio_example_deps="avutil swresample"
3181 scaling_video_example_deps="avutil swscale"
3182 transcode_aac_example_deps="avcodec avformat swresample"
3183 transcoding_example_deps="avfilter avcodec avformat avutil"
3184
3185 # libraries, in linking order
3186 avcodec_deps="avutil"
3187 avdevice_deps="avformat avcodec avutil"
3188 avfilter_deps="avutil"
3189 avformat_deps="avcodec avutil"
3190 avresample_deps="avutil"
3191 postproc_deps="avutil gpl"
3192 swresample_deps="avutil"
3193 swscale_deps="avutil"
3194
3195 # programs
3196 ffmpeg_deps="avcodec avfilter avformat swresample"
3197 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3198                null_filter
3199                trim_filter"
3200 ffplay_deps="avcodec avformat swscale swresample sdl2"
3201 ffplay_libs='$sdl2_libs'
3202 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3203 ffprobe_deps="avcodec avformat"
3204 ffserver_deps="avformat fork sarestart"
3205 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3206
3207 # documentation
3208 podpages_deps="perl"
3209 manpages_deps="perl pod2man"
3210 htmlpages_deps="perl"
3211 htmlpages_deps_any="makeinfo_html texi2html"
3212 txtpages_deps="perl makeinfo"
3213 doc_deps_any="manpages htmlpages podpages txtpages"
3214
3215 # default parameters
3216
3217 logfile="config.log"
3218
3219 # installation paths
3220 prefix_default="/usr/local"
3221 bindir_default='${prefix}/bin'
3222 datadir_default='${prefix}/share/ffmpeg'
3223 docdir_default='${prefix}/share/doc/ffmpeg'
3224 incdir_default='${prefix}/include'
3225 libdir_default='${prefix}/lib'
3226 mandir_default='${prefix}/share/man'
3227
3228 # toolchain
3229 ar_default="ar"
3230 cc_default="gcc"
3231 cxx_default="g++"
3232 host_cc_default="gcc"
3233 cp_f="cp -f"
3234 doxygen_default="doxygen"
3235 install="install"
3236 ln_s_default="ln -s -f"
3237 nm_default="nm -g"
3238 objformat="elf"
3239 pkg_config_default=pkg-config
3240 ranlib_default="ranlib"
3241 strip_default="strip"
3242 version_script='--version-script'
3243 yasmexe_default="yasm"
3244 windres_default="windres"
3245
3246 # OS
3247 target_os_default=$(tolower $(uname -s))
3248 host_os=$target_os_default
3249
3250 # machine
3251 if test "$target_os_default" = aix; then
3252     arch_default=$(uname -p)
3253     strip_default="strip -X32_64"
3254 else
3255     arch_default=$(uname -m)
3256 fi
3257 cpu="generic"
3258 intrinsics="none"
3259
3260 # configurable options
3261 enable $PROGRAM_LIST
3262 enable $DOCUMENT_LIST
3263 enable $EXAMPLE_LIST
3264 enable $(filter_out avresample $LIBRARY_LIST)
3265 enable stripping
3266
3267 enable asm
3268 enable debug
3269 enable doc
3270 enable faan faandct faanidct
3271 enable optimizations
3272 enable runtime_cpudetect
3273 enable safe_bitstream_reader
3274 enable static
3275 enable swscale_alpha
3276 enable valgrind_backtrace
3277
3278 sws_max_filter_size_default=256
3279 set_default sws_max_filter_size
3280
3281 # build settings
3282 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3283 LIBPREF="lib"
3284 LIBSUF=".a"
3285 FULLNAME='$(NAME)$(BUILDSUF)'
3286 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3287 SLIBPREF="lib"
3288 SLIBSUF=".so"
3289 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3290 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3291 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3292 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3293 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3294 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3295 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3296
3297 asflags_filter=echo
3298 cflags_filter=echo
3299 ldflags_filter=echo
3300
3301 AS_C='-c'
3302 AS_O='-o $@'
3303 CC_C='-c'
3304 CC_E='-E -o $@'
3305 CC_O='-o $@'
3306 CXX_C='-c'
3307 CXX_O='-o $@'
3308 OBJCC_C='-c'
3309 OBJCC_E='-E -o $@'
3310 OBJCC_O='-o $@'
3311 LD_O='-o $@'
3312 LD_LIB='-l%'
3313 LD_PATH='-L'
3314 HOSTCC_C='-c'
3315 HOSTCC_E='-E -o $@'
3316 HOSTCC_O='-o $@'
3317 HOSTLD_O='-o $@'
3318
3319 host_libs='-lm'
3320 host_cflags_filter=echo
3321 host_ldflags_filter=echo
3322
3323 target_path='$(CURDIR)'
3324
3325 # since the object filename is not given with the -MM flag, the compiler
3326 # is only able to print the basename, and we must add the path ourselves
3327 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3328 DEPFLAGS='-MM'
3329
3330 # find source path
3331 if test -f configure; then
3332     source_path=.
3333 else
3334     source_path=$(cd $(dirname "$0"); pwd)
3335     case "$source_path" in
3336         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3337     esac
3338     test -e "$source_path/config.h" &&
3339         die "Out of tree builds are impossible with config.h in source dir."
3340 fi
3341
3342 for v in "$@"; do
3343     r=${v#*=}
3344     l=${v%"$r"}
3345     r=$(sh_quote "$r")
3346     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3347 done
3348
3349 find_things(){
3350     thing=$1
3351     pattern=$2
3352     file=$source_path/$3
3353     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3354 }
3355
3356 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3357 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3358 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3359 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3360 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3361 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3362 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3363 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3364 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3365
3366 find_things_extern(){
3367     thing=$1
3368     pattern=$2
3369     file=$source_path/$3
3370     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3371 }
3372
3373 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3374 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3375
3376 ALL_COMPONENTS="
3377     $BSF_LIST
3378     $DECODER_LIST
3379     $DEMUXER_LIST
3380     $ENCODER_LIST
3381     $FILTER_LIST
3382     $HWACCEL_LIST
3383     $INDEV_LIST
3384     $MUXER_LIST
3385     $OUTDEV_LIST
3386     $PARSER_LIST
3387     $PROTOCOL_LIST
3388 "
3389
3390 for n in $COMPONENT_LIST; do
3391     v=$(toupper ${n%s})_LIST
3392     eval enable \$$v
3393     eval ${n}_if_any="\$$v"
3394 done
3395
3396 enable $ARCH_EXT_LIST
3397
3398 die_unknown(){
3399     echo "Unknown option \"$1\"."
3400     echo "See $0 --help for available options."
3401     exit 1
3402 }
3403
3404 print_in_columns() {
3405     cols=$(expr $ncols / 24)
3406     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3407 }
3408
3409 show_list() {
3410     suffix=_$1
3411     shift
3412     echo $* | sed s/$suffix//g | print_in_columns
3413     exit 0
3414 }
3415
3416 rand_list(){
3417     IFS=', '
3418     set -- $*
3419     unset IFS
3420     for thing; do
3421         comp=${thing%:*}
3422         prob=${thing#$comp}
3423         prob=${prob#:}
3424         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3425         echo "prob ${prob:-0.5}"
3426         printf '%s\n' $comp
3427     done
3428 }
3429
3430 do_random(){
3431     action=$1
3432     shift
3433     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3434     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3435 }
3436
3437 for opt do
3438     optval="${opt#*=}"
3439     case "$opt" in
3440         --extra-ldflags=*)
3441             add_ldflags $optval
3442         ;;
3443         --extra-ldexeflags=*)
3444             add_ldexeflags $optval
3445         ;;
3446         --extra-ldlibflags=*)
3447             add_ldlibflags $optval
3448         ;;
3449         --extra-libs=*)
3450             add_extralibs $optval
3451         ;;
3452         --disable-devices)
3453             disable $INDEV_LIST $OUTDEV_LIST
3454         ;;
3455         --enable-debug=*)
3456             debuglevel="$optval"
3457         ;;
3458         --disable-programs)
3459             disable $PROGRAM_LIST
3460         ;;
3461         --disable-everything)
3462             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3463         ;;
3464         --disable-all)
3465             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3466             disable $LIBRARY_LIST $PROGRAM_LIST doc
3467             enable avutil
3468         ;;
3469         --enable-random|--disable-random)
3470             action=${opt%%-random}
3471             do_random ${action#--} $COMPONENT_LIST
3472         ;;
3473         --enable-random=*|--disable-random=*)
3474             action=${opt%%-random=*}
3475             do_random ${action#--} $optval
3476         ;;
3477         --enable-*=*|--disable-*=*)
3478             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3479             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3480             eval list=\$$(toupper $thing)_LIST
3481             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3482             list=$(filter "$name" $list)
3483             [ "$list" = "" ] && warn "Option $opt did not match anything"
3484             $action $list
3485         ;;
3486         --enable-?*|--disable-?*)
3487             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3488             if is_in $option $COMPONENT_LIST; then
3489                 test $action = disable && action=unset
3490                 eval $action \$$(toupper ${option%s})_LIST
3491             elif is_in $option $CMDLINE_SELECT; then
3492                 $action $option
3493             else
3494                 die_unknown $opt
3495             fi
3496         ;;
3497         --list-*)
3498             NAME="${opt#--list-}"
3499             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3500             NAME=${NAME%s}
3501             eval show_list $NAME \$$(toupper $NAME)_LIST
3502         ;;
3503         --help|-h) show_help
3504         ;;
3505         --fatal-warnings) enable fatal_warnings
3506         ;;
3507         *)
3508             optname="${opt%%=*}"
3509             optname="${optname#--}"
3510             optname=$(echo "$optname" | sed 's/-/_/g')
3511             if is_in $optname $CMDLINE_SET; then
3512                 eval $optname='$optval'
3513             elif is_in $optname $CMDLINE_APPEND; then
3514                 append $optname "$optval"
3515             else
3516                 die_unknown $opt
3517             fi
3518         ;;
3519     esac
3520 done
3521
3522 for e in $env; do
3523     eval "export $e"
3524 done
3525
3526 # Mark specifically enabled, but normally autodetected libraries as requested.
3527 for lib in $AUTODETECT_LIBS; do
3528     enabled $lib && request $lib
3529 done
3530
3531 # Enable platform codecs by default.
3532 enable_weak audiotoolbox
3533
3534 # Enable hwaccels by default.
3535 enable_weak d3d11va dxva2 vaapi vda vdpau videotoolbox_hwaccel xvmc
3536 enable_weak xlib
3537
3538 enable_weak cuda cuvid nvenc vda_framework videotoolbox videotoolbox_encoder
3539
3540 disabled logging && logfile=/dev/null
3541
3542 # Disable all the library-specific components if the library itself
3543 # is disabled, see AVCODEC_LIST and following _LIST variables.
3544
3545 disable_components(){
3546     disabled ${1} && disable $(
3547         eval components="\$$(toupper ${1})_COMPONENTS"
3548         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3549     )
3550 }
3551
3552 map 'disable_components $v' $LIBRARY_LIST
3553
3554 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3555 set >> $logfile
3556
3557 test -n "$valgrind" && toolchain="valgrind-memcheck"
3558
3559 case "$toolchain" in
3560     *-asan)
3561         cc_default="${toolchain%-asan}"
3562         add_cflags  -fsanitize=address
3563         add_ldflags -fsanitize=address
3564     ;;
3565     *-msan)
3566         cc_default="${toolchain%-msan}"
3567         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3568         add_ldflags -fsanitize=memory
3569     ;;
3570     *-tsan)
3571         cc_default="${toolchain%-tsan}"
3572         add_cflags  -fsanitize=thread -fPIE
3573         add_ldflags -fsanitize=thread -pie
3574         case "$toolchain" in
3575             gcc-tsan)
3576                 add_cflags  -fPIC
3577                 add_ldflags -fPIC
3578                 ;;
3579         esac
3580     ;;
3581     *-usan)
3582         cc_default="${toolchain%-usan}"
3583         add_cflags  -fsanitize=undefined
3584         add_ldflags -fsanitize=undefined
3585     ;;
3586     valgrind-*)
3587         target_exec_default="valgrind"
3588         case "$toolchain" in
3589             valgrind-massif)
3590                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3591                 ;;
3592             valgrind-memcheck)
3593                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3594                 ;;
3595         esac
3596     ;;
3597     msvc)
3598         # Check whether the current MSVC version needs the C99 converter.
3599         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3600         # support enough of C99 to build ffmpeg. Default to the new
3601         # behaviour if the regexp was unable to match anything, since this
3602         # successfully parses the version number of existing supported
3603         # versions that require the converter (MSVC 2010 and 2012).
3604         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3605         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3606             cc_default="cl"
3607         else
3608             cc_default="c99wrap cl"
3609         fi
3610         ld_default="$source_path/compat/windows/mslink"
3611         nm_default="dumpbin -symbols"
3612         ar_default="lib"
3613         case "$arch" in
3614         arm*)
3615             as_default="armasm"
3616             ;;
3617         esac
3618         target_os_default="win32"
3619         # Use a relative path for TMPDIR. This makes sure all the
3620         # ffconf temp files are written with a relative path, avoiding
3621         # issues with msys/win32 path conversion for MSVC parameters
3622         # such as -Fo<file> or -out:<file>.
3623         TMPDIR=.
3624     ;;
3625     icl)
3626         cc_default="icl"
3627         ld_default="xilink"
3628         nm_default="dumpbin -symbols"
3629         ar_default="xilib"
3630         target_os_default="win32"
3631         TMPDIR=.
3632     ;;
3633     gcov)
3634         add_cflags  -fprofile-arcs -ftest-coverage
3635         add_ldflags -fprofile-arcs -ftest-coverage
3636     ;;
3637     llvm-cov)
3638         add_cflags -fprofile-arcs -ftest-coverage
3639         add_ldflags --coverage
3640     ;;
3641     hardened)
3642         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3643         add_cflags   -fno-strict-overflow -fstack-protector-all
3644         add_ldflags  -Wl,-z,relro -Wl,-z,now
3645         add_cflags   -fPIE
3646         add_ldexeflags -fPIE -pie
3647     ;;
3648     ?*)
3649         die "Unknown toolchain $toolchain"
3650     ;;
3651 esac
3652
3653 test -n "$cross_prefix" && enable cross_compile
3654
3655 if enabled cross_compile; then
3656     test -n "$arch" && test -n "$target_os" ||
3657         die "Must specify target arch and OS when cross-compiling"
3658 fi
3659
3660 ar_default="${cross_prefix}${ar_default}"
3661 cc_default="${cross_prefix}${cc_default}"
3662 cxx_default="${cross_prefix}${cxx_default}"
3663 nm_default="${cross_prefix}${nm_default}"
3664 pkg_config_default="${cross_prefix}${pkg_config_default}"
3665 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3666     ranlib_default="${cross_prefix}${ranlib_default} -D"
3667 else
3668     ranlib_default="${cross_prefix}${ranlib_default}"
3669 fi
3670 strip_default="${cross_prefix}${strip_default}"
3671 windres_default="${cross_prefix}${windres_default}"
3672
3673 sysinclude_default="${sysroot}/usr/include"
3674
3675 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3676     target_exec target_os yasmexe
3677 enabled cross_compile || host_cc_default=$cc
3678 set_default host_cc
3679
3680 pkg_config_fail_message=""
3681 if ! $pkg_config --version >/dev/null 2>&1; then
3682     warn "$pkg_config not found, library detection may fail."
3683     pkg_config=false
3684 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3685     pkg_config_fail_message="
3686 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3687 fi
3688
3689 if test $doxygen != $doxygen_default && \
3690   ! $doxygen --version >/dev/null 2>&1; then
3691     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3692 fi
3693
3694 exesuf() {
3695     case $1 in
3696         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3697     esac
3698 }
3699
3700 EXESUF=$(exesuf $target_os)
3701 HOSTEXESUF=$(exesuf $host_os)
3702
3703 # set temporary file name
3704 : ${TMPDIR:=$TEMPDIR}
3705 : ${TMPDIR:=$TMP}
3706 : ${TMPDIR:=/tmp}
3707
3708 if [ -n "$tempprefix" ] ; then
3709     mktemp(){
3710         echo $tempprefix.${HOSTNAME}.${UID}
3711     }
3712 elif ! check_cmd mktemp -u XXXXXX; then
3713     # simple replacement for missing mktemp
3714     # NOT SAFE FOR GENERAL USE
3715     mktemp(){
3716         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3717     }
3718 fi
3719
3720 tmpfile(){
3721     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3722         (set -C; exec > $tmp) 2>/dev/null ||
3723         die "Unable to create temporary file in $TMPDIR."
3724     append TMPFILES $tmp
3725     eval $1=$tmp
3726 }
3727
3728 trap 'rm -f -- $TMPFILES' EXIT
3729
3730 tmpfile TMPASM .asm
3731 tmpfile TMPC   .c
3732 tmpfile TMPCPP .cpp
3733 tmpfile TMPE   $EXESUF
3734 tmpfile TMPH   .h
3735 tmpfile TMPM   .m
3736 tmpfile TMPO   .o
3737 tmpfile TMPS   .S
3738 tmpfile TMPSH  .sh
3739 tmpfile TMPV   .ver
3740
3741 unset -f mktemp
3742
3743 chmod +x $TMPE
3744
3745 # make sure we can execute files in $TMPDIR
3746 cat > $TMPSH 2>> $logfile <<EOF
3747 #! /bin/sh
3748 EOF
3749 chmod +x $TMPSH >> $logfile 2>&1
3750 if ! $TMPSH >> $logfile 2>&1; then
3751     cat <<EOF
3752 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3753 variable to another directory and make sure that it is not mounted noexec.
3754 EOF
3755     die "Sanity test failed."
3756 fi
3757
3758 armasm_flags(){
3759     for flag; do
3760         case $flag in
3761             # Filter out MSVC cl.exe options from cflags that shouldn't
3762             # be passed to gas-preprocessor
3763             -M[TD]*)                                            ;;
3764             *)                  echo $flag                      ;;
3765         esac
3766    done
3767 }
3768
3769 ccc_flags(){
3770     for flag; do
3771         case $flag in
3772             -std=c99)           echo -c99                       ;;
3773             -mcpu=*)            echo -arch ${flag#*=}           ;;
3774             -mieee)             echo -ieee                      ;;
3775             -O*|-fast)          echo $flag                      ;;
3776             -fno-math-errno)    echo -assume nomath_errno       ;;
3777             -g)                 echo -g3                        ;;
3778             -Wall)              echo -msg_enable level2         ;;
3779             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3780             -Wl,*)              echo $flag                      ;;
3781             -f*|-W*)                                            ;;
3782             *)                  echo $flag                      ;;
3783         esac
3784    done
3785 }
3786
3787 cparser_flags(){
3788     for flag; do
3789         case $flag in
3790             -Wno-switch)             echo -Wno-switch-enum ;;
3791             -Wno-format-zero-length) ;;
3792             -Wdisabled-optimization) ;;
3793             -Wno-pointer-sign)       echo -Wno-other ;;
3794             *)                       echo $flag ;;
3795         esac
3796     done
3797 }
3798
3799 msvc_common_flags(){
3800     for flag; do
3801         case $flag in
3802             # In addition to specifying certain flags under the compiler
3803             # specific filters, they must be specified here as well or else the
3804             # generic catch all at the bottom will print the original flag.
3805             -Wall)                ;;
3806             -std=c99)             ;;
3807             # Common flags
3808             -fomit-frame-pointer) ;;
3809             -g)                   echo -Z7 ;;
3810             -fno-math-errno)      ;;
3811             -fno-common)          ;;
3812             -fno-signed-zeros)    ;;
3813             -fPIC)                ;;
3814             -mthumb)              ;;
3815             -march=*)             ;;
3816             -lz)                  echo zlib.lib ;;
3817             -lavifil32)           echo vfw32.lib ;;
3818             -lavicap32)           echo vfw32.lib user32.lib ;;
3819             -lx264)               echo libx264.lib ;;
3820             -l*)                  echo ${flag#-l}.lib ;;
3821             -LARGEADDRESSAWARE)   echo $flag ;;
3822             -L*)                  echo -libpath:${flag#-L} ;;
3823             *)                    echo $flag ;;
3824         esac
3825     done
3826 }
3827
3828 msvc_flags(){
3829     msvc_common_flags "$@"
3830     for flag; do
3831         case $flag in
3832             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3833                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3834                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3835                                        -wd4307 \
3836                                        -wd4273 -wd4554 -wd4701 ;;
3837         esac
3838     done
3839 }
3840
3841 icl_flags(){
3842     msvc_common_flags "$@"
3843     for flag; do
3844         case $flag in
3845             # Despite what Intel's documentation says -Wall, which is supported
3846             # on Windows, does enable remarks so disable them here.
3847             -Wall)                echo $flag -Qdiag-disable:remark ;;
3848             -std=c99)             echo -Qstd=c99 ;;
3849             -flto)                echo -ipo ;;
3850         esac
3851     done
3852 }
3853
3854 icc_flags(){
3855     for flag; do
3856         case $flag in
3857             -flto)                echo -ipo ;;
3858             *)                    echo $flag ;;
3859         esac
3860     done
3861 }
3862
3863 pgi_flags(){
3864     for flag; do
3865         case $flag in
3866             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3867             -fomit-frame-pointer) echo -Mnoframe ;;
3868             -g)                   echo -gopt ;;
3869             *)                    echo $flag ;;
3870         esac
3871     done
3872 }
3873
3874 suncc_flags(){
3875     for flag; do
3876         case $flag in
3877             -march=*|-mcpu=*)
3878                 case "${flag#*=}" in
3879                     native)                   echo -xtarget=native       ;;
3880                     v9|niagara)               echo -xarch=sparc          ;;
3881                     ultrasparc)               echo -xarch=sparcvis       ;;
3882                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3883                     i586|pentium)             echo -xchip=pentium        ;;
3884                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3885                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3886                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3887                     pentium4*)          echo -xtarget=pentium4           ;;
3888                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3889                     *-sse3)             echo -xarch=sse3                 ;;
3890                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3891                     bonnell)                   echo -xarch=ssse3         ;;
3892                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3893                     westmere)                  echo -xtarget=westmere    ;;
3894                     silvermont)                echo -xarch=sse4_2        ;;
3895                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3896                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
3897                                                echo -xarch=avx           ;;
3898                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3899                     btver1)                    echo -xarch=amdsse4a      ;;
3900                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
3901                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3902                     k8|opteron|athlon64|athlon-fx)
3903                                                echo -xarch=sse2a         ;;
3904                     athlon*)                   echo -xarch=pentium_proa  ;;
3905                 esac
3906                 ;;
3907             -std=c99)             echo -xc99              ;;
3908             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3909             -fPIC)                echo -KPIC -xcode=pic32 ;;
3910             -W*,*)                echo $flag              ;;
3911             -f*-*|-W*|-mimpure-text)                      ;;
3912             -shared)              echo -G                 ;;
3913             *)                    echo $flag              ;;
3914         esac
3915     done
3916 }
3917
3918 tms470_flags(){
3919     for flag; do
3920         case $flag in
3921             -march=*|-mcpu=*)
3922                 case "${flag#*=}" in
3923                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3924                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3925                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3926                     armv6*|arm11*)          echo -mv=6   ;;
3927                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3928                                             echo -mv=5e  ;;
3929                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3930                 esac
3931                 ;;
3932             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3933             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3934             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3935             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3936             -msoft-float)   echo --float_support=vfplib       ;;
3937             -O[0-3]|-mf=*)  echo $flag                        ;;
3938             -g)             echo -g -mn                       ;;
3939             -pds=*)         echo $flag                        ;;
3940             -D*|-I*)        echo $flag                        ;;
3941             --gcc|--abi=*)  echo $flag                        ;;
3942             -me)            echo $flag                        ;;
3943         esac
3944     done
3945 }
3946
3947 probe_cc(){
3948     pfx=$1
3949     _cc=$2
3950     first=$3
3951
3952     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3953     unset _ld_o _ldflags _ld_lib _ld_path
3954     unset _depflags _DEPCMD _DEPFLAGS
3955     _flags_filter=echo
3956
3957     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3958         true # no-op to avoid reading stdin in following checks
3959     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3960         _type=llvm_gcc
3961         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3962         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3963         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3964         _cflags_speed='-O3'
3965         _cflags_size='-Os'
3966     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3967         _type=gcc
3968         gcc_version=$($_cc --version | head -n1)
3969         gcc_basever=$($_cc -dumpversion)
3970         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3971         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3972         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3973         case $gcc_basever in
3974             2) ;;
3975             2.*) ;;
3976             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
3977         esac
3978         if [ "$first" = true ]; then
3979             case $gcc_basever in
3980                 4.2*)
3981                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
3982             esac
3983         fi
3984         _cflags_speed='-O3'
3985         _cflags_size='-Os'
3986     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3987         _type=icc
3988         _ident=$($_cc --version | head -n1)
3989         _depflags='-MMD'
3990         _cflags_speed='-O3'
3991         _cflags_size='-Os'
3992         _cflags_noopt='-O1'
3993         _flags_filter=icc_flags
3994     elif $_cc -v 2>&1 | grep -q xlc; then
3995         _type=xlc
3996         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3997         _cflags_speed='-O5'
3998         _cflags_size='-O5 -qcompact'
3999     elif $_cc -V 2>/dev/null | grep -q Compaq; then
4000         _type=ccc
4001         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
4002         _DEPFLAGS='-M'
4003         _cflags_speed='-fast'
4004         _cflags_size='-O1'
4005         _flags_filter=ccc_flags
4006     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4007         test -d "$sysroot" || die "No valid sysroot specified."
4008         _type=armcc
4009         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4010         armcc_conf="$PWD/armcc.conf"
4011         $_cc --arm_linux_configure                 \
4012              --arm_linux_config_file="$armcc_conf" \
4013              --configure_sysroot="$sysroot"        \
4014              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4015              die "Error creating armcc configuration file."
4016         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4017         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4018         as_default="${cross_prefix}gcc"
4019         _depflags='-MMD'
4020         _cflags_speed='-O3'
4021         _cflags_size='-Os'
4022     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
4023         _type=tms470
4024         _ident=$($_cc -version | head -n1 | tr -s ' ')
4025         _flags='--gcc --abi=eabi -me'
4026         _cc_e='-ppl -fe=$@'
4027         _cc_o='-fe=$@'
4028         _depflags='-ppa -ppd=$(@:.o=.d)'
4029         _cflags_speed='-O3 -mf=5'
4030         _cflags_size='-O3 -mf=2'
4031         _flags_filter=tms470_flags
4032     elif $_cc -v 2>&1 | grep -q clang; then
4033         _type=clang
4034         _ident=$($_cc --version 2>/dev/null | head -n1)
4035         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4036         _cflags_speed='-O3'
4037         _cflags_size='-Oz'
4038     elif $_cc -V 2>&1 | grep -q Sun; then
4039         _type=suncc
4040         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4041         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4042         _DEPFLAGS='-xM1 -xc99'
4043         _ldflags='-std=c99'
4044         _cflags_speed='-O5'
4045         _cflags_size='-O5 -xspace'
4046         _flags_filter=suncc_flags
4047     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4048         _type=pathscale
4049         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4050         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4051         _cflags_speed='-O2'
4052         _cflags_size='-Os'
4053         _flags_filter='filter_out -Wdisabled-optimization'
4054     elif $_cc -v 2>&1 | grep -q Open64; then
4055         _type=open64
4056         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4057         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4058         _cflags_speed='-O2'
4059         _cflags_size='-Os'
4060         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4061     elif $_cc -V 2>&1 | grep -q Portland; then
4062         _type=pgi
4063         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
4064         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
4065         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
4066         _cflags_size="-O2 -Munroll=c:1 $opt_common"
4067         _cflags_noopt="-O"
4068         _flags_filter=pgi_flags
4069     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4070         _type=armasm
4071         _ident=$($_cc | head -n1)
4072         # 4509: "This form of conditional instruction is deprecated"
4073         _flags="-nologo -ignore 4509"
4074         _flags_filter=armasm_flags
4075     elif $_cc 2>&1 | grep -q Intel; then
4076         _type=icl
4077         _ident=$($_cc 2>&1 | head -n1)
4078         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4079         # Not only is O3 broken on 13.x+ but it is slower on all previous
4080         # versions (tested) as well.
4081         _cflags_speed="-O2"
4082         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4083         if $_cc 2>&1 | grep -q Linker; then
4084             _ld_o='-out:$@'
4085         else
4086             _ld_o='-Fe$@'
4087         fi
4088         _cc_o='-Fo$@'
4089         _cc_e='-P'
4090         _flags_filter=icl_flags
4091         _ld_lib='lib%.a'
4092         _ld_path='-libpath:'
4093         # -Qdiag-error to make icl error when seeing certain unknown arguments
4094         _flags='-nologo -Qdiag-error:4044,10157'
4095         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4096         # with MSVC which enables it by default.
4097         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4098         disable stripping
4099     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4100         # lld can emulate multiple different linkers; in ms link.exe mode,
4101         # the -? parameter gives the help output which contains an identifyable
4102         # string, while it gives an error in other modes.
4103         _type=lld-link
4104         # The link.exe mode doesn't have a switch for getting the version,
4105         # but we can force it back to gnu mode and get the version from there.
4106         _ident=$($_cc -flavor gnu --version)
4107         _ld_o='-out:$@'
4108         _flags_filter=msvc_flags
4109         _ld_lib='lib%.a'
4110         _ld_path='-libpath:'
4111     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4112         _type=msvc
4113         _ident=$($_cc 2>&1 | head -n1)
4114         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4115         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4116         _cflags_speed="-O2"
4117         _cflags_size="-O1"
4118         if $_cc -nologo- 2>&1 | grep -q Linker; then
4119             _ld_o='-out:$@'
4120         else
4121             _ld_o='-Fe$@'
4122         fi
4123         _cc_o='-Fo$@'
4124         _cc_e='-P -Fi$@'
4125         _flags_filter=msvc_flags
4126         _ld_lib='lib%.a'
4127         _ld_path='-libpath:'
4128         _flags='-nologo'
4129         disable stripping
4130     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4131         _type=cparser
4132         _ident=$($_cc --version | head -n1)
4133         _depflags='-MMD'
4134         _cflags_speed='-O4'
4135         _cflags_size='-O2'
4136         _flags_filter=cparser_flags
4137     fi
4138
4139     eval ${pfx}_type=\$_type
4140     eval ${pfx}_ident=\$_ident
4141 }
4142
4143 set_ccvars(){
4144     eval ${1}_C=\${_cc_c-\${${1}_C}}
4145     eval ${1}_E=\${_cc_e-\${${1}_E}}
4146     eval ${1}_O=\${_cc_o-\${${1}_O}}
4147
4148     if [ -n "$_depflags" ]; then
4149         eval ${1}_DEPFLAGS=\$_depflags
4150     else
4151         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4152         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4153         eval DEP${1}FLAGS=\$_flags
4154     fi
4155 }
4156
4157 probe_cc cc "$cc" "true"
4158 cflags_filter=$_flags_filter
4159 cflags_speed=$_cflags_speed
4160 cflags_size=$_cflags_size
4161 cflags_noopt=$_cflags_noopt
4162 add_cflags $_flags $_cflags
4163 cc_ldflags=$_ldflags
4164 set_ccvars CC
4165
4166 probe_cc hostcc "$host_cc"
4167 host_cflags_filter=$_flags_filter
4168 add_host_cflags  $_flags $_cflags
4169 set_ccvars HOSTCC
4170
4171 test -n "$cc_type" && enable $cc_type ||
4172     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4173
4174 : ${as_default:=$cc}
4175 : ${objcc_default:=$cc}
4176 : ${dep_cc_default:=$cc}
4177 : ${ld_default:=$cc}
4178 : ${host_ld_default:=$host_cc}
4179 set_default ar as objcc dep_cc ld ln_s host_ld windres
4180
4181 probe_cc as "$as"
4182 asflags_filter=$_flags_filter
4183 add_asflags $_flags $_cflags
4184 set_ccvars AS
4185
4186 probe_cc objcc "$objcc"
4187 objcflags_filter=$_flags_filter
4188 add_objcflags $_flags $_cflags
4189 set_ccvars OBJC
4190
4191 probe_cc ld "$ld"
4192 ldflags_filter=$_flags_filter
4193 add_ldflags $_flags $_ldflags
4194 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4195 LD_O=${_ld_o-$LD_O}
4196 LD_LIB=${_ld_lib-$LD_LIB}
4197 LD_PATH=${_ld_path-$LD_PATH}
4198
4199 probe_cc hostld "$host_ld"
4200 host_ldflags_filter=$_flags_filter
4201 add_host_ldflags $_flags $_ldflags
4202 HOSTLD_O=${_ld_o-$HOSTLD_O}
4203
4204 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4205     probe_cc depcc "$dep_cc"
4206     CCDEP=${_DEPCMD:-$DEPCMD}
4207     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4208     DEPCCFLAGS=$_flags
4209 fi
4210
4211 if $ar 2>&1 | grep -q Microsoft; then
4212     arflags="-nologo"
4213     ar_o='-out:$@'
4214 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
4215     arflags="rq"
4216     ar_o='$@'
4217 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
4218     arflags='-Xany -r -c'
4219     ar_o='$@'
4220 elif $ar 2>&1 | grep -q "\[D\] "; then
4221     arflags="rcD"
4222     ar_o='$@'
4223 else
4224     arflags="rc"
4225     ar_o='$@'
4226 fi
4227
4228 add_cflags $extra_cflags
4229 add_cxxflags $extra_cxxflags
4230 add_objcflags $extra_objcflags
4231 add_asflags $extra_cflags
4232
4233 if test -n "$sysroot"; then
4234     case "$cc_type" in
4235         gcc|llvm_gcc|clang)
4236             add_cppflags --sysroot="$sysroot"
4237             add_ldflags --sysroot="$sysroot"
4238 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
4239             add_cppflags -isysroot "$sysroot"
4240             add_ldflags -isysroot "$sysroot"
4241         ;;
4242         tms470)
4243             add_cppflags -I"$sysinclude"
4244             add_ldflags  --sysroot="$sysroot"
4245         ;;
4246     esac
4247 fi
4248
4249 if test "$cpu" = host; then
4250     enabled cross_compile &&
4251         die "--cpu=host makes no sense when cross-compiling."
4252
4253     case "$cc_type" in
4254         gcc|llvm_gcc)
4255             check_native(){
4256                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4257                 sed -n "/cc1.*$1=/{
4258                             s/.*$1=\\([^ ]*\\).*/\\1/
4259                             p
4260                             q
4261                         }" $TMPE
4262             }
4263             cpu=$(check_native -march || check_native -mcpu)
4264         ;;
4265         clang)
4266             check_native(){
4267                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4268                 sed -n "/cc1.*-target-cpu /{
4269                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4270                             p
4271                             q
4272                         }" $TMPE
4273             }
4274             cpu=$(check_native -march)
4275         ;;
4276     esac
4277
4278     test "${cpu:-host}" = host &&
4279         die "--cpu=host not supported with compiler $cc"
4280 fi
4281
4282 # Deal with common $arch aliases
4283 case "$arch" in
4284     aarch64|arm64)
4285         arch="aarch64"
4286     ;;
4287     arm*|iPad*|iPhone*)
4288         arch="arm"
4289     ;;
4290     mips*|IP*)
4291         case "$arch" in
4292         *el)
4293             add_cppflags -EL
4294             add_ldflags -EL
4295         ;;
4296         *eb)
4297             add_cppflags -EB
4298             add_ldflags -EB
4299         ;;
4300         esac
4301         arch="mips"
4302     ;;
4303     parisc*|hppa*)
4304         arch="parisc"
4305     ;;
4306     "Power Macintosh"|ppc*|powerpc*)
4307         arch="ppc"
4308     ;;
4309     s390|s390x)
4310         arch="s390"
4311     ;;
4312     sh4|sh)
4313         arch="sh4"
4314     ;;
4315     sun4*|sparc*)
4316         arch="sparc"
4317     ;;
4318     tilegx|tile-gx)
4319         arch="tilegx"
4320     ;;
4321     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4322         arch="x86"
4323     ;;
4324 esac
4325
4326 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4327 enable $arch
4328
4329 # Add processor-specific flags
4330 if enabled aarch64; then
4331
4332     case $cpu in
4333         armv*)
4334             cpuflags="-march=$cpu"
4335         ;;
4336         *)
4337             cpuflags="-mcpu=$cpu"
4338         ;;
4339     esac
4340
4341 elif enabled alpha; then
4342
4343     cpuflags="-mcpu=$cpu"
4344
4345 elif enabled arm; then
4346
4347     check_arm_arch() {
4348         check_cpp_condition stddef.h \
4349             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4350             $cpuflags
4351     }
4352
4353     probe_arm_arch() {
4354         if   check_arm_arch 4;        then echo armv4
4355         elif check_arm_arch 4T;       then echo armv4t
4356         elif check_arm_arch 5;        then echo armv5
4357         elif check_arm_arch 5E;       then echo armv5e
4358         elif check_arm_arch 5T;       then echo armv5t
4359         elif check_arm_arch 5TE;      then echo armv5te
4360         elif check_arm_arch 5TEJ;     then echo armv5te
4361         elif check_arm_arch 6;        then echo armv6
4362         elif check_arm_arch 6J;       then echo armv6j
4363         elif check_arm_arch 6K;       then echo armv6k
4364         elif check_arm_arch 6Z;       then echo armv6z
4365         elif check_arm_arch 6ZK;      then echo armv6zk
4366         elif check_arm_arch 6T2;      then echo armv6t2
4367         elif check_arm_arch 7;        then echo armv7
4368         elif check_arm_arch 7A  7_A;  then echo armv7-a
4369         elif check_arm_arch 7S;       then echo armv7-a
4370         elif check_arm_arch 7R  7_R;  then echo armv7-r
4371         elif check_arm_arch 7M  7_M;  then echo armv7-m
4372         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4373         elif check_arm_arch 8A  8_A;  then echo armv8-a
4374         fi
4375     }
4376
4377     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4378
4379     case $cpu in
4380         armv*)
4381             cpuflags="-march=$cpu"
4382             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4383         ;;
4384         *)
4385             cpuflags="-mcpu=$cpu"
4386             case $cpu in
4387                 cortex-a*)                               subarch=armv7a  ;;
4388                 cortex-r*)                               subarch=armv7r  ;;
4389                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4390                 arm11*)                                  subarch=armv6   ;;
4391                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4392                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4393                 *)                             subarch=$(probe_arm_arch) ;;
4394             esac
4395         ;;
4396     esac
4397
4398     case "$subarch" in
4399         armv5t*)    enable fast_clz                ;;
4400         armv[6-8]*)
4401             enable fast_clz
4402             disabled fast_unaligned || enable fast_unaligned
4403             ;;
4404     esac
4405
4406 elif enabled avr32; then
4407
4408     case $cpu in
4409         ap7[02]0[0-2])
4410             subarch="avr32_ap"
4411             cpuflags="-mpart=$cpu"
4412         ;;
4413         ap)
4414             subarch="avr32_ap"
4415             cpuflags="-march=$cpu"
4416         ;;
4417         uc3[ab]*)
4418             subarch="avr32_uc"
4419             cpuflags="-mcpu=$cpu"
4420         ;;
4421         uc)
4422             subarch="avr32_uc"
4423             cpuflags="-march=$cpu"
4424         ;;
4425     esac
4426
4427 elif enabled bfin; then
4428
4429     cpuflags="-mcpu=$cpu"
4430
4431 elif enabled mips; then
4432
4433     cpuflags="-march=$cpu"
4434
4435     if [ "$cpu" != "generic" ]; then
4436         disable mips32r2
4437         disable mips32r5
4438         disable mips64r2
4439         disable mips32r6
4440         disable mips64r6
4441         disable loongson2
4442         disable loongson3
4443
4444         case $cpu in
4445             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4446                 enable mips32r2
4447                 disable msa
4448             ;;
4449             p5600|i6400|p6600)
4450                 disable mipsdsp
4451                 disable mipsdspr2
4452             ;;
4453             loongson*)
4454                 enable loongson2
4455                 enable loongson3
4456                 enable local_aligned_8 local_aligned_16 local_aligned_32
4457                 enable simd_align_16
4458                 enable fast_64bit
4459                 enable fast_clz
4460                 enable fast_cmov
4461                 enable fast_unaligned
4462                 disable aligned_stack
4463                 disable mipsfpu
4464                 disable mipsdsp
4465                 disable mipsdspr2
4466                 case $cpu in
4467                     loongson3*)
4468                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4469                     ;;
4470                     loongson2e)
4471                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4472                     ;;
4473                     loongson2f)
4474                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4475                     ;;
4476                 esac
4477             ;;
4478             *)
4479                 # Unknown CPU. Disable everything.
4480                 warn "unknown CPU. Disabling all MIPS optimizations."
4481                 disable mipsfpu
4482                 disable mipsdsp
4483                 disable mipsdspr2
4484                 disable msa
4485                 disable mmi
4486             ;;
4487         esac
4488
4489         case $cpu in
4490             24kc)
4491                 disable mipsfpu
4492                 disable mipsdsp
4493                 disable mipsdspr2
4494             ;;
4495             24kf*)
4496                 disable mipsdsp
4497                 disable mipsdspr2
4498             ;;
4499             24kec|34kc|1004kc)
4500                 disable mipsfpu
4501                 disable mipsdspr2
4502             ;;
4503             24kef*|34kf*|1004kf*)
4504                 disable mipsdspr2
4505             ;;
4506             74kc)
4507                 disable mipsfpu
4508             ;;
4509             p5600)
4510                 enable mips32r5
4511                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4512             ;;
4513             i6400)
4514                 enable mips64r6
4515                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4516             ;;
4517             p6600)
4518                 enable mips64r6
4519                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4520             ;;
4521         esac
4522     else
4523         # We do not disable anything. Is up to the user to disable the unwanted features.
4524         warn 'generic cpu selected'
4525     fi
4526
4527 elif enabled ppc; then
4528
4529     disable ldbrx
4530
4531     case $(tolower $cpu) in
4532         601|ppc601|powerpc601)
4533             cpuflags="-mcpu=601"
4534             disable altivec
4535         ;;
4536         603*|ppc603*|powerpc603*)
4537             cpuflags="-mcpu=603"
4538             disable altivec
4539         ;;
4540         604*|ppc604*|powerpc604*)
4541             cpuflags="-mcpu=604"
4542             disable altivec
4543         ;;
4544         g3|75*|ppc75*|powerpc75*)
4545             cpuflags="-mcpu=750"
4546             disable altivec
4547         ;;
4548         g4|745*|ppc745*|powerpc745*)
4549             cpuflags="-mcpu=7450"
4550             disable vsx
4551         ;;
4552         74*|ppc74*|powerpc74*)
4553             cpuflags="-mcpu=7400"
4554             disable vsx
4555         ;;
4556         g5|970|ppc970|powerpc970)
4557             cpuflags="-mcpu=970"
4558             disable vsx
4559         ;;
4560         power[3-6]*)
4561             cpuflags="-mcpu=$cpu"
4562             disable vsx
4563         ;;
4564         power[7-8]*)
4565             cpuflags="-mcpu=$cpu"
4566         ;;
4567         cell)
4568             cpuflags="-mcpu=cell"
4569             enable ldbrx
4570             disable vsx
4571         ;;
4572         e500mc)
4573             cpuflags="-mcpu=e500mc"
4574             disable altivec
4575         ;;
4576         e500v2)
4577             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4578             disable altivec
4579             disable dcbzl
4580         ;;
4581         e500)
4582             cpuflags="-mcpu=8540 -mhard-float"
4583             disable altivec
4584             disable dcbzl
4585         ;;
4586     esac
4587
4588 elif enabled sparc; then
4589
4590     case $cpu in
4591         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4592             cpuflags="-mcpu=$cpu"
4593         ;;
4594         ultrasparc*|niagara[234])
4595             cpuflags="-mcpu=$cpu"
4596         ;;
4597     esac
4598
4599 elif enabled x86; then
4600
4601     case $cpu in
4602         i[345]86|pentium)
4603             cpuflags="-march=$cpu"
4604             disable i686
4605             disable mmx
4606         ;;
4607         # targets that do NOT support nopl and conditional mov (cmov)
4608         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4609             cpuflags="-march=$cpu"
4610             disable i686
4611         ;;
4612         # targets that do support nopl and conditional mov (cmov)
4613         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4614         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4615         |amdfam10|barcelona|b[dt]ver*|znver*)
4616             cpuflags="-march=$cpu"
4617             enable i686
4618             enable fast_cmov
4619         ;;
4620         # targets that do support conditional mov but on which it's slow
4621         pentium4|pentium4m|prescott|nocona)
4622             cpuflags="-march=$cpu"
4623             enable i686
4624             disable fast_cmov
4625         ;;
4626     esac
4627
4628 fi
4629
4630 if [ "$cpu" != generic ]; then
4631     add_cflags  $cpuflags
4632     add_asflags $cpuflags
4633     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4634 fi
4635
4636 # compiler sanity check
4637 check_exec <<EOF
4638 int main(void){ return 0; }
4639 EOF
4640 if test "$?" != 0; then
4641     echo "$cc is unable to create an executable file."
4642     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4643         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4644         echo "Only do this if you know what cross compiling means."
4645     fi
4646     die "C compiler test failed."
4647 fi
4648
4649 add_cppflags -D_ISOC99_SOURCE
4650 add_cxxflags -D__STDC_CONSTANT_MACROS
4651 add_cxxflags -std=c++98
4652
4653 # some compilers silently accept -std=c11, so we also need to check that the
4654 # version macro is defined properly
4655 if test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L"; then
4656     add_cflags -std=c11
4657 else
4658     check_cflags -std=c99
4659 fi
4660
4661 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4662 #include <stdlib.h>
4663 EOF
4664 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4665 #include <stdlib.h>
4666 EOF
4667
4668 add_host_cppflags -D_ISOC99_SOURCE
4669 check_host_cflags -std=c99
4670 check_host_cflags -Wall
4671 check_host_cflags -O3
4672
4673 check_64bit(){
4674     arch32=$1
4675     arch64=$2
4676     expr=$3
4677     check_code cc "" "int test[2*($expr) - 1]" &&
4678         subarch=$arch64 || subarch=$arch32
4679 }
4680
4681 case "$arch" in
4682     aarch64|alpha|ia64)
4683         spic=$shared
4684     ;;
4685     mips)
4686         check_64bit mips mips64 '_MIPS_SIM > 1'
4687         spic=$shared
4688     ;;
4689     parisc)
4690         check_64bit parisc parisc64 'sizeof(void *) > 4'
4691         spic=$shared
4692     ;;
4693     ppc)
4694         check_64bit ppc ppc64 'sizeof(void *) > 4'
4695         spic=$shared
4696     ;;
4697     s390)
4698         check_64bit s390 s390x 'sizeof(void *) > 4'
4699         spic=$shared
4700     ;;
4701     sparc)
4702         check_64bit sparc sparc64 'sizeof(void *) > 4'
4703         spic=$shared
4704     ;;
4705     x86)
4706         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4707         # Treat x32 as x64 for now. Note it also needs spic=$shared
4708         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4709             subarch=x86_64
4710         if test "$subarch" = "x86_64"; then
4711             spic=$shared
4712         fi
4713     ;;
4714     ppc)
4715         check_cc <<EOF && subarch="ppc64"
4716         int test[(int)sizeof(char*) - 7];
4717 EOF
4718     ;;
4719 esac
4720
4721 enable $subarch
4722 enabled spic && enable_weak pic
4723
4724 # OS specific
4725 case $target_os in
4726     aix)
4727         SHFLAGS=-shared
4728         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4729         enabled shared && add_ldflags -Wl,-brtl
4730         ;;
4731     android)
4732         disable symver
4733         enable section_data_rel_ro
4734         SLIB_INSTALL_NAME='$(SLIBNAME)'
4735         SLIB_INSTALL_LINKS=
4736         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4737         ;;
4738     haiku)
4739         prefix_default="/boot/common"
4740         network_extralibs="-lnetwork"
4741         host_libs=
4742         ;;
4743     sunos)
4744         SHFLAGS='-shared -Wl,-h,$$(@F)'
4745         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4746         network_extralibs="-lsocket -lnsl"
4747         add_cppflags -D__EXTENSIONS__
4748         # When using suncc to build, the Solaris linker will mark
4749         # an executable with each instruction set encountered by
4750         # the Solaris assembler.  As our libraries contain their own
4751         # guards for processor-specific code, instead suppress
4752         # generation of the HWCAPS ELF section on Solaris x86 only.
4753         enabled_all suncc x86 &&
4754             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4755             add_ldflags -Wl,-M,mapfile
4756         nm_default='nm -P -g'
4757         version_script='-M'
4758         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
4759         ;;
4760     netbsd)
4761         disable symver
4762         oss_indev_extralibs="-lossaudio"
4763         oss_outdev_extralibs="-lossaudio"
4764         enabled gcc || check_ldflags -Wl,-zmuldefs
4765         ;;
4766     openbsd|bitrig)
4767         disable symver
4768         SHFLAGS='-shared'
4769         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4770         SLIB_INSTALL_LINKS=
4771         oss_indev_extralibs="-lossaudio"
4772         oss_outdev_extralibs="-lossaudio"
4773         ;;
4774     dragonfly)
4775         disable symver
4776         ;;
4777     freebsd)
4778         ;;
4779     bsd/os)
4780         add_extralibs -lpoll -lgnugetopt
4781         strip="strip -d"
4782         ;;
4783     darwin)
4784         enabled ppc && add_asflags -force_cpusubtype_ALL
4785         install_name_dir_default='$(SHLIBDIR)'
4786         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4787         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4788         strip="${strip} -x"
4789         add_ldflags -Wl,-dynamic,-search_paths_first
4790         SLIBSUF=".dylib"
4791         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4792         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4793         objformat="macho"
4794         enabled x86_64 && objformat="macho64"
4795         enabled_any pic shared x86_64 ||
4796             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4797         check_header dispatch/dispatch.h &&
4798             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
4799         version_script='-exported_symbols_list'
4800         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
4801         ;;
4802     msys*)
4803         die "Native MSYS builds are discouraged, please use the MINGW environment."
4804         ;;
4805     mingw32*|mingw64*)
4806         if test $target_os = "mingw32ce"; then
4807             disable network
4808         else
4809             target_os=mingw32
4810         fi
4811         decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
4812         decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
4813         LIBTARGET=i386
4814         if enabled x86_64; then
4815             LIBTARGET="i386:x86-64"
4816         elif enabled arm; then
4817             LIBTARGET=arm-wince
4818         fi
4819         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4820         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4821         shlibdir_default="$bindir_default"
4822         SLIBPREF=""
4823         SLIBSUF=".dll"
4824         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4825         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4826         dlltool="${cross_prefix}dlltool"
4827         if check_cmd lib.exe -list; then
4828             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4829             if enabled x86_64; then
4830                 LIBTARGET=x64
4831             fi
4832         elif check_cmd $dlltool --version; then
4833             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4834         fi
4835         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4836         SLIB_INSTALL_LINKS=
4837         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4838         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4839         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--disable-auto-image-base'
4840         objformat="win32"
4841         ranlib=:
4842         enable dos_paths
4843         check_ldflags -Wl,--nxcompat,--dynamicbase
4844         # Lets work around some stupidity in binutils.
4845         # ld will strip relocations from executables even though we need them
4846         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4847         # however ld then forgets what the entry point should be (oops) so we
4848         # have to manually (re)set it.
4849         if enabled x86_32; then
4850             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
4851         elif enabled x86_64; then
4852             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
4853             check_ldflags -Wl,--high-entropy-va # binutils 2.25
4854             # Set image base >4GB for extra entropy with HEASLR
4855             add_ldexeflags -Wl,--image-base,0x140000000
4856             append SHFLAGS -Wl,--image-base,0x180000000
4857         fi
4858         ;;
4859     win32|win64)
4860         disable symver
4861         if enabled shared; then
4862             # Link to the import library instead of the normal static library
4863             # for shared libs.
4864             LD_LIB='%.lib'
4865             # Cannot build both shared and static libs with MSVC or icl.
4866             disable static
4867         fi
4868         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4869         shlibdir_default="$bindir_default"
4870         SLIBPREF=""
4871         SLIBSUF=".dll"
4872         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4873         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4874         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4875         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4876         SLIB_INSTALL_LINKS=
4877         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4878         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4879         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4880         objformat="win32"
4881         ranlib=:
4882         enable dos_paths
4883         ;;
4884     cygwin*)
4885         target_os=cygwin
4886         shlibdir_default="$bindir_default"
4887         SLIBPREF="cyg"
4888         SLIBSUF=".dll"
4889         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4890         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4891         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4892         SLIB_INSTALL_LINKS=
4893         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4894         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4895         objformat="win32"
4896         enable dos_paths
4897         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4898         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4899         ;;
4900     *-dos|freedos|opendos)
4901         network_extralibs="-lsocket"
4902         objformat="coff"
4903         enable dos_paths
4904         add_cppflags -U__STRICT_ANSI__
4905         ;;
4906     linux)
4907         enable dv1394
4908         enable section_data_rel_ro
4909         ;;
4910     irix*)
4911         target_os=irix
4912         ranlib="echo ignoring ranlib"
4913         ;;
4914     os/2*)
4915         strip="lxlite -CS"
4916         objformat="aout"
4917         add_cppflags -D_GNU_SOURCE
4918         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4919         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4920         LIBSUF="_s.a"
4921         SLIBPREF=""
4922         SLIBSUF=".dll"
4923         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4924         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4925         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
4926             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
4927             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
4928             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
4929             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
4930         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
4931             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
4932         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4933         SLIB_INSTALL_LINKS=
4934         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
4935         enable dos_paths
4936         enable_weak os2threads
4937         ;;
4938     gnu/kfreebsd)
4939         add_cppflags -D_BSD_SOURCE
4940         ;;
4941     gnu)
4942         ;;
4943     qnx)
4944         add_cppflags -D_QNX_SOURCE
4945         network_extralibs="-lsocket"
4946         ;;
4947     symbian)
4948         SLIBSUF=".dll"
4949         enable dos_paths
4950         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4951         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4952         add_ldflags -Wl,--target1-abs,--no-undefined \
4953                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4954                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4955         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4956                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4957                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4958         ;;
4959     osf1)
4960         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4961         ;;
4962     minix)
4963         ;;
4964     plan9)
4965         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4966                      -D_REENTRANT_SOURCE        \
4967                      -D_RESEARCH_SOURCE         \
4968                      -DFD_SETSIZE=96            \
4969                      -DHAVE_SOCK_OPTS
4970         add_compat strtod.o strtod=avpriv_strtod
4971         network_extralibs='-lbsd'
4972         exeobjs=compat/plan9/main.o
4973         disable ffserver
4974         cp_f='cp'
4975         ;;
4976     none)
4977         ;;
4978     *)
4979         die "Unknown OS '$target_os'."
4980         ;;
4981 esac
4982
4983 # test if creating links works
4984 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
4985 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
4986 mkdir "$link_dest"
4987 $ln_s "$link_dest" "$link_name"
4988 touch "$link_dest/test_file"
4989 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
4990     # create link to source path
4991     [ -e src ] && rm src
4992     $ln_s "$source_path" src
4993     source_link=src
4994 else
4995     # creating directory links doesn't work
4996     # fall back to using the full source path
4997     source_link="$source_path"
4998 fi
4999 # cleanup
5000 rm -r "$link_dest"
5001 rm -r "$link_name"
5002
5003 # determine libc flavour
5004
5005 probe_libc(){
5006     pfx=$1
5007     pfx_no_=${pfx%_}
5008     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5009     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5010         eval ${pfx}libc_type=uclibc
5011         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5012     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5013         eval ${pfx}libc_type=glibc
5014         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5015     # MinGW headers can be installed on Cygwin, so check for newlib first.
5016     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5017         eval ${pfx}libc_type=newlib
5018         add_${pfx}cppflags -U__STRICT_ANSI__
5019     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5020     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5021         eval ${pfx}libc_type=mingw64
5022         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5023             add_compat msvcrt/snprintf.o
5024             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5025         fi
5026         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5027         eval test \$${pfx_no_}cc_type = "gcc" &&
5028             add_${pfx}cppflags -D__printf__=__gnu_printf__
5029     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5030          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5031         eval ${pfx}libc_type=mingw32
5032         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5033             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5034             die "ERROR: MinGW32 runtime version must be >= 3.15."
5035         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5036         check_${pfx}cpp_condition _mingw.h "defined(_WIN32_WINNT) && _WIN32_WINNT >= 0x0502" ||
5037             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
5038         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700__" &&
5039             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5040         eval test \$${pfx_no_}cc_type = "gcc" &&
5041             add_${pfx}cppflags -D__printf__=__gnu_printf__
5042     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5043         eval ${pfx}libc_type=msvcrt
5044         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5045             if [ "$pfx" = host_ ]; then
5046                 add_host_cppflags -Dsnprintf=_snprintf
5047             else
5048                 add_compat strtod.o strtod=avpriv_strtod
5049                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5050                                              _snprintf=avpriv_snprintf  \
5051                                              vsnprintf=avpriv_vsnprintf
5052             fi
5053         fi
5054         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5055         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5056         # 0x601 by default unless something else is set by the user.
5057         # This can easily lead to us detecting functions only present
5058         # in such new versions and producing binaries requiring windows 7.0.
5059         # Therefore explicitly set the default to XP unless the user has
5060         # set something else on the command line.
5061         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5062         # family. For these cases, configure is free to use any functions
5063         # found in the SDK headers by default. (Alternatively, we could force
5064         # _WIN32_WINNT to 0x0602 in that case.)
5065         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5066             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
5067 #ifdef WINAPI_FAMILY
5068 #include <winapifamily.h>
5069 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5070 #error not desktop
5071 #endif
5072 #endif
5073 EOF
5074         if [ "$pfx" = "" ]; then
5075             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5076             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5077         fi
5078     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5079         eval ${pfx}libc_type=klibc
5080     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5081         eval ${pfx}libc_type=bionic
5082     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5083         eval ${pfx}libc_type=solaris
5084         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5085     fi
5086     check_${pfx}cc <<EOF
5087 #include <time.h>
5088 void *v = localtime_r;
5089 EOF
5090 test "$?" != 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
5091 #include <time.h>
5092 void *v = localtime_r;
5093 EOF
5094
5095 }
5096
5097 probe_libc
5098 test -n "$libc_type" && enable libc_$libc_type
5099 probe_libc host_
5100 test -n "$host_libc_type" && enable host_libc_$host_libc_type
5101
5102 case $libc_type in
5103     bionic)
5104         add_compat strtod.o strtod=avpriv_strtod
5105         ;;
5106 esac
5107
5108 # hacks for compiler/libc/os combinations
5109
5110 if enabled_all tms470 libc_glibc; then
5111     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
5112     add_cppflags -D__USER_LABEL_PREFIX__=
5113     add_cppflags -D__builtin_memset=memset
5114     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
5115     add_cflags   -pds=48    # incompatible redefinition of macro
5116 fi
5117
5118 if enabled_all ccc libc_glibc; then
5119     add_ldflags -Wl,-z,now  # calls to libots crash without this
5120 fi
5121
5122 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5123     add_cppflags '-I\$(SRC_PATH)/compat/float'
5124
5125 esc(){
5126     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
5127 }
5128
5129 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
5130
5131 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5132
5133 set_default libdir
5134 : ${shlibdir_default:="$libdir"}
5135 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5136
5137 set_default $PATHS_LIST
5138 set_default nm
5139
5140 # we need to build at least one lib type
5141 if ! enabled_any static shared; then
5142     cat <<EOF
5143 At least one library type must be built.
5144 Specify --enable-static to build the static libraries or --enable-shared to
5145 build the shared libraries as well. To only build the shared libraries specify
5146 --disable-static in addition to --enable-shared.
5147 EOF
5148     exit 1
5149 fi
5150
5151 die_license_disabled() {
5152     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
5153 }
5154
5155 die_license_disabled_gpl() {
5156     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
5157 }
5158
5159 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
5160 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
5161
5162 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
5163 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
5164
5165 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
5166
5167 disabled optimizations || check_cflags -fomit-frame-pointer
5168
5169 enable_weak_pic() {
5170     disabled pic && return
5171     enable pic
5172     add_cppflags -DPIC
5173     case "$target_os" in
5174     mingw*|cygwin*)
5175         ;;
5176     *)
5177         add_cflags -fPIC
5178         ;;
5179     esac
5180     add_asflags  -fPIC
5181 }
5182
5183 enabled pic && enable_weak_pic
5184
5185 check_cc <<EOF || die "Symbol mangling check failed."
5186 int ff_extern;
5187 EOF
5188 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5189 extern_prefix=${sym%%ff_extern*}
5190
5191 check_cc <<EOF && enable_weak inline_asm
5192 void foo(void) { __asm__ volatile ("" ::); }
5193 EOF
5194
5195 _restrict=
5196 for restrict_keyword in restrict __restrict__ __restrict; do
5197     check_cc <<EOF && _restrict=$restrict_keyword && break
5198 void foo(char * $restrict_keyword p);
5199 EOF
5200 done
5201
5202 check_cc <<EOF && enable pragma_deprecated
5203 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
5204 EOF
5205
5206 check_cc <<EOF && enable attribute_packed
5207 struct { int x; } __attribute__((packed)) x;
5208 EOF
5209
5210 check_cc <<EOF && enable attribute_may_alias
5211 union { int x; } __attribute__((may_alias)) x;
5212 EOF
5213
5214 check_cc <<EOF || die "endian test failed"
5215 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5216 EOF
5217 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5218
5219 if ! enabled ppc64 || enabled bigendian; then
5220     disable vsx
5221 fi
5222
5223 check_gas() {
5224     log "check_gas using '$as' as AS"
5225     # :vararg is used on aarch64, arm and ppc altivec
5226     check_as <<EOF || return 1
5227 .macro m n, y:vararg=0
5228 \n: .int \y
5229 .endm
5230 m x
5231 EOF
5232     # .altmacro is only used in arm asm
5233     ! enabled arm || check_as <<EOF || return 1
5234 .altmacro
5235 EOF
5236     enable gnu_as
5237     return 0
5238 }
5239
5240 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5241     nogas=:
5242     enabled_any arm aarch64 && nogas=die
5243     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5244     as_noop=-v
5245
5246     case $as_type in
5247         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5248         gcc)  gaspp_as_type=gas ;;
5249         *)    gaspp_as_type=$as_type ;;
5250     esac
5251
5252     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5253
5254     test "${as#*gas-preprocessor.pl}" != "$as" ||
5255     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5256         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5257
5258     if ! check_gas ; then
5259         as=${gas:=$as}
5260         check_gas || \
5261             $nogas "GNU assembler not found, install/update gas-preprocessor"
5262     fi
5263
5264     check_as <<EOF && enable as_func
5265 .func test
5266 .endfunc
5267 EOF
5268 fi
5269
5270 check_inline_asm inline_asm_labels '"1:\n"'
5271
5272 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5273
5274 if enabled aarch64; then
5275     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5276     # internal assembler in clang 3.3 does not support this instruction
5277     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5278     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5279
5280     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5281
5282 elif enabled alpha; then
5283
5284     check_cflags -mieee
5285
5286 elif enabled arm; then
5287
5288     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
5289
5290     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
5291 float func(float a, float b){ return a+b; }
5292 EOF
5293
5294     enabled thumb && check_cflags -mthumb || check_cflags -marm
5295
5296     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
5297         enable vfp_args
5298     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5299         enable vfp_args
5300     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5301         case "${cross_prefix:-$cc}" in
5302             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
5303             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
5304 __asm__ (".eabi_attribute 28, 1");
5305 int main(void) { return 0; }
5306 EOF
5307         esac
5308         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5309     fi
5310
5311     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5312     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5313     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5314     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5315     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5316     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5317     enabled setend  && check_insn setend  'setend be'
5318
5319     [ $target_os = linux ] || [ $target_os = android ] ||
5320         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5321             $ARCH_EXT_LIST_ARM
5322
5323     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5324
5325     check_as <<EOF && enable as_dn_directive
5326 ra .dn d0.i16
5327 .unreq ra
5328 EOF
5329     check_as <<EOF && enable as_fpu_directive
5330 .fpu neon
5331 EOF
5332
5333     # llvm's integrated assembler supports .object_arch from llvm 3.5
5334     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
5335 .object_arch armv4
5336 EOF
5337
5338     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5339
5340 elif enabled mips; then
5341
5342     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5343     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5344     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5345
5346     # Enable minimum ISA based on selected options
5347     if enabled mips64; then
5348         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5349         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5350         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5351     else
5352         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5353         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5354         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5355         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5356     fi
5357
5358     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5359     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5360     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
5361     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5362     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5363
5364 elif enabled parisc; then
5365
5366     if enabled gcc; then
5367         case $($cc -dumpversion) in
5368             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5369         esac
5370     fi
5371
5372 elif enabled ppc; then
5373
5374     enable local_aligned_8 local_aligned_16 local_aligned_32
5375
5376     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5377     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5378     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5379     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5380
5381     # AltiVec flags: The FSF version of GCC differs from the Apple version
5382     if enabled altivec; then
5383         check_cflags -maltivec -mabi=altivec &&
5384         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
5385         check_cflags -faltivec
5386
5387         # check if our compiler supports Motorola AltiVec C API
5388         check_cc <<EOF || disable altivec
5389 $inc_altivec_h
5390 int main(void) {
5391     vector signed int v1 = (vector signed int) { 0 };
5392     vector signed int v2 = (vector signed int) { 1 };
5393     v1 = vec_add(v1, v2);
5394     return 0;
5395 }
5396 EOF
5397
5398         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5399     fi
5400
5401     if enabled vsx; then
5402         check_cflags -mvsx &&
5403         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
5404     fi
5405
5406     if enabled power8; then
5407         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
5408     fi
5409
5410 elif enabled x86; then
5411
5412     check_builtin rdtsc    intrin.h   "__rdtsc()"
5413     check_builtin mm_empty mmintrin.h "_mm_empty()"
5414
5415     enable local_aligned_8 local_aligned_16 local_aligned_32
5416
5417     # check whether EBP is available on x86
5418     # As 'i' is stored on the stack, this program will crash
5419     # if the base pointer is used to access it because the
5420     # base pointer is cleared in the inline assembly code.
5421     check_exec_crash <<EOF && enable ebp_available
5422 volatile int i=0;
5423 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5424 return i;
5425 EOF
5426
5427     # check whether EBX is available on x86
5428     check_inline_asm ebx_available '""::"b"(0)' &&
5429         check_inline_asm ebx_available '"":::"%ebx"'
5430
5431     # check whether xmm clobbers are supported
5432     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5433
5434     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5435         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5436
5437     # check whether binutils is new enough to compile SSSE3/MMXEXT
5438     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5439     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5440
5441     if ! disabled_any asm mmx yasm; then
5442         if check_cmd $yasmexe --version; then
5443             enabled x86_64 && yasm_extra="-m amd64"
5444             yasm_debug="-g dwarf2"
5445         elif check_cmd nasm -v; then
5446             yasmexe=nasm
5447             yasm_debug="-g -F dwarf"
5448             if enabled x86_64; then
5449                 case "$objformat" in
5450                     elf)   objformat=elf64 ;;
5451                     win32) objformat=win64 ;;
5452                 esac
5453             fi
5454         fi
5455
5456         YASMFLAGS="-f $objformat $yasm_extra"
5457         enabled pic               && append YASMFLAGS "-DPIC"
5458         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
5459         case "$objformat" in
5460             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
5461         esac
5462
5463         check_yasm "movbe ecx, [5]" && enable yasm ||
5464             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
5465         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
5466         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
5467         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
5468         check_yasm "CPU amdnop" || disable cpunop
5469     fi
5470
5471     case "$cpu" in
5472         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5473             disable fast_clz
5474         ;;
5475     esac
5476
5477 fi
5478
5479 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
5480
5481 check_ldflags -Wl,--as-needed
5482 check_ldflags -Wl,-z,noexecstack
5483
5484 if check_func dlopen && check_func dlsym; then
5485     ldl=
5486 elif check_func dlopen -ldl && check_func dlsym -ldl; then
5487     ldl=-ldl
5488 fi
5489
5490 avisynth_demuxer_extralibs='$ldl'
5491 cuda_extralibs='$ldl'
5492 decklink_outdev_extralibs="$decklink_outdev_extralibs $ldl"
5493 decklink_indev_extralibs="$decklink_indev_extralibs $ldl"
5494 frei0r_filter_extralibs='$ldl'
5495 frei0r_src_filter_extralibs='$ldl'
5496 ladspa_filter_extralibs='$ldl'
5497 nvenc_extralibs='$ldl'
5498 coreimage_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5499 coreimagesrc_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5500
5501 if ! disabled network; then
5502     check_func getaddrinfo $network_extralibs
5503     check_func inet_aton $network_extralibs
5504
5505     check_type netdb.h "struct addrinfo"
5506     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5507     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5508     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5509     check_type poll.h "struct pollfd"
5510     check_type netinet/sctp.h "struct sctp_event_subscribe"
5511     check_struct "sys/socket.h" "struct msghdr" msg_flags
5512     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5513     check_type netinet/in.h "struct sockaddr_in6"
5514     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5515     check_type "sys/types.h sys/socket.h" socklen_t
5516
5517     # Prefer arpa/inet.h over winsock2
5518     if check_header arpa/inet.h ; then
5519         check_func closesocket
5520     elif check_header winsock2.h ; then
5521         check_func_headers winsock2.h closesocket -lws2 &&
5522             network_extralibs="-lws2" ||
5523         { check_func_headers winsock2.h closesocket -lws2_32 &&
5524             network_extralibs="-lws2_32"; } || disable winsock2_h network
5525         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5526
5527         check_type ws2tcpip.h socklen_t
5528         check_type ws2tcpip.h "struct addrinfo"
5529         check_type ws2tcpip.h "struct group_source_req"
5530         check_type ws2tcpip.h "struct ip_mreq_source"
5531         check_type ws2tcpip.h "struct ipv6_mreq"
5532         check_type winsock2.h "struct pollfd"
5533         check_struct winsock2.h "struct sockaddr" sa_len
5534         check_type ws2tcpip.h "struct sockaddr_in6"
5535         check_type ws2tcpip.h "struct sockaddr_storage"
5536     else
5537         disable network
5538     fi
5539 fi
5540
5541 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5542 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5543 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5544 check_builtin sarestart signal.h "SA_RESTART"
5545 check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" -lpthread
5546 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5547 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5548 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5549 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5550
5551 case "$custom_allocator" in
5552     jemalloc)
5553         # jemalloc by default does not use a prefix
5554         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5555     ;;
5556     tcmalloc)
5557         require_pkg_config libtcmalloc gperftools/tcmalloc.h tc_malloc
5558         malloc_prefix=tc_
5559     ;;
5560 esac
5561
5562 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5563 check_func  ${malloc_prefix}memalign            && enable memalign
5564 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5565
5566 check_func  access
5567 check_func_headers stdlib.h arc4random
5568 check_func_headers time.h clock_gettime ||
5569     { check_lib time.h clock_gettime -lrt && LIBRT="-lrt"; }
5570 check_func  fcntl
5571 check_func  fork
5572 check_func  gethrtime
5573 check_func  getopt
5574 check_func  getrusage
5575 check_func  gettimeofday
5576 check_func  isatty
5577 check_func  mach_absolute_time
5578 check_func  mkstemp
5579 check_func  mmap
5580 check_func  mprotect
5581 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5582 check_func_headers time.h nanosleep ||
5583     { check_lib time.h nanosleep -lrt && LIBRT="-lrt"; }
5584 check_func  sched_getaffinity
5585 check_func  setrlimit
5586 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5587 check_func  strerror_r
5588 check_func  sysconf
5589 check_func  sysctl
5590 check_func  usleep
5591
5592 check_func_headers conio.h kbhit
5593 check_func_headers io.h setmode
5594 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5595 check_func_headers stdlib.h getenv
5596 check_func_headers sys/stat.h lstat
5597
5598 check_func_headers windows.h CoTaskMemFree -lole32
5599 check_func_headers windows.h GetProcessAffinityMask
5600 check_func_headers windows.h GetProcessTimes
5601 check_func_headers windows.h GetSystemTimeAsFileTime
5602 check_func_headers windows.h LoadLibrary
5603 check_func_headers windows.h MapViewOfFile
5604 check_func_headers windows.h PeekNamedPipe
5605 check_func_headers windows.h SetConsoleTextAttribute
5606 check_func_headers windows.h SetConsoleCtrlHandler
5607 check_func_headers windows.h Sleep
5608 check_func_headers windows.h VirtualAlloc
5609 check_struct windows.h "CONDITION_VARIABLE" Ptr
5610 check_func_headers glob.h glob
5611 enabled xlib &&
5612     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5613
5614 check_header AudioToolbox/AudioToolbox.h
5615 check_header direct.h
5616 check_header dirent.h
5617 check_header dlfcn.h
5618 check_header d3d11.h
5619 check_header dxva.h
5620 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5621 check_header io.h
5622 check_header libcrystalhd/libcrystalhd_if.h
5623 check_header mach/mach_time.h
5624 check_header malloc.h
5625 check_header net/udplite.h
5626 check_header poll.h
5627 check_header sys/mman.h
5628 check_header sys/param.h
5629 check_header sys/resource.h
5630 check_header sys/select.h
5631 check_header sys/time.h
5632 check_header sys/un.h
5633 check_header termios.h
5634 check_header unistd.h
5635 check_header valgrind/valgrind.h
5636 check_header vdpau/vdpau.h
5637 check_header vdpau/vdpau_x11.h
5638 check_header VideoDecodeAcceleration/VDADecoder.h
5639 check_header VideoToolbox/VideoToolbox.h
5640 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5641 enabled videotoolbox && check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferColorPrimaries_ITU_R_2020 -framework CoreVideo
5642 check_header windows.h
5643 check_header X11/extensions/XvMClib.h
5644 check_header asm/types.h
5645
5646 # it seems there are versions of clang in some distros that try to use the
5647 # gcc headers, which explodes for stdatomic
5648 # so we also check that atomics actually work here
5649 check_builtin stdatomic_h stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0)"
5650
5651 check_lib "windows.h shellapi.h" CommandLineToArgvW   -lshell32
5652 check_lib "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
5653 check_lib "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
5654
5655 check_lib "CoreServices/CoreServices.h" UTGetOSTypeFromString "-framework CoreServices"
5656
5657 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5658
5659 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5660 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5661 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5662 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5663 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5664
5665 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
5666 check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
5667 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
5668 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
5669 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5670 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5671 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
5672 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
5673
5674 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5675
5676 check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt
5677
5678 if ! disabled w32threads && ! enabled pthreads; then
5679     check_func_headers "windows.h process.h" _beginthreadex &&
5680         enable w32threads || disable w32threads
5681     if ! enabled w32threads && enabled winrt; then
5682         check_func_headers "windows.h" CreateThread &&
5683             enable w32threads || disable w32threads
5684     fi
5685 fi
5686
5687 # check for some common methods of building with pthread support
5688 # do this before the optional library checks as some of them require pthreads
5689 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5690     enable pthreads
5691     if check_func pthread_join -pthread && check_func pthread_create -pthread; then
5692         add_cflags -pthread
5693         add_extralibs -pthread
5694     elif check_func pthread_join -pthreads && check_func pthread_create -pthreads; then
5695         add_cflags -pthreads
5696         add_extralibs -pthreads
5697     elif check_func pthread_join -ldl -pthread && check_func pthread_create -ldl -pthread; then
5698         add_cflags -ldl -pthread
5699         add_extralibs -ldl -pthread
5700     elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
5701         add_extralibs -lpthreadGC2
5702     elif check_lib pthread.h pthread_join -lpthread && check_lib pthread.h pthread_create -lpthread; then
5703         :
5704     elif ! check_func pthread_join && ! check_func pthread_create; then
5705         disable pthreads
5706     fi
5707     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5708 fi
5709
5710
5711 if enabled pthreads; then
5712   check_func pthread_cancel
5713 fi
5714
5715 enabled pthreads &&
5716     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)"
5717
5718 disabled  zlib || check_lib  zlib.h      zlibVersion    -lz    || disable  zlib
5719 disabled bzlib || check_lib bzlib.h BZ2_bzlibVersion    -lbz2  || disable bzlib
5720 disabled  lzma || check_lib  lzma.h lzma_version_number -llzma || disable lzma
5721
5722 check_lib math.h sin -lm && LIBM="-lm"
5723 disabled crystalhd || check_lib "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd || disable crystalhd
5724
5725 atan2f_args=2
5726 copysign_args=2
5727 hypot_args=2
5728 ldexpf_args=2
5729 powf_args=2
5730
5731 for func in $MATH_FUNCS; do
5732     eval check_mathfunc $func \${${func}_args:-1}
5733 done
5734
5735 for func in $COMPLEX_FUNCS; do
5736     eval check_complexfunc $func \${${func}_args:-1}
5737 done
5738
5739 # these are off by default, so fail if requested and not available
5740 enabled avfoundation_indev && { check_header_objcc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
5741 enabled avfoundation_indev && { check_lib CoreGraphics/CoreGraphics.h CGGetActiveDisplayList -framework CoreGraphics ||
5742                                 check_lib ApplicationServices/ApplicationServices.h CGGetActiveDisplayList -framework ApplicationServices; }
5743 enabled cuda              && check_header cuda.h # this is not a dependency
5744 enabled cuvid             && { enabled cuda ||
5745                                die "ERROR: CUVID requires CUDA"; }
5746 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5747 enabled coreimage_filter  && { check_header_objcc QuartzCore/CoreImage.h || disable coreimage_filter; }
5748 enabled coreimagesrc_filter && { check_header_objcc QuartzCore/CoreImage.h || disable coreimagesrc_filter; }
5749 enabled decklink          && { { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; } &&
5750                                { check_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a060100" || die "ERROR: Decklink API version must be >= 10.6.1."; } }
5751 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
5752 enabled gmp               && require gmp gmp.h mpz_export -lgmp
5753 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
5754 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads &&
5755                                check_lib "dlfcn.h" dlopen -ldl || die "ERROR: jni not found"; }
5756 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
5757 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5758 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
5759 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
5760 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
5761 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5762                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
5763                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5764 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
5765 enabled libfdk_aac        && { use_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5766                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5767                                  warn "using libfdk without pkg-config"; } }
5768 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"
5769 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_libs
5770 enabled fontconfig        && enable libfontconfig
5771 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
5772 enabled libfreetype       && require_libfreetype
5773 enabled libfribidi        && require_pkg_config fribidi fribidi.h fribidi_version_info
5774 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
5775 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5776                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
5777                                done || die "ERROR: libgsm not found"; }
5778 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
5779 enabled libkvazaar        && require_pkg_config "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
5780 enabled libmfx            && require_pkg_config libmfx "mfx/mfxvideo.h" MFXInit
5781 enabled libmodplug        && require_pkg_config libmodplug libmodplug/modplug.h ModPlug_Load
5782 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5783 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
5784 enabled libnpp            && require libnpp npp.h nppGetLibVersion -lnppi -lnppc
5785 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5786 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5787 enabled libopencv         && { check_header opencv2/core/core_c.h &&
5788                                { use_pkg_config opencv opencv2/core/core_c.h cvCreateImageHeader ||
5789                                  require opencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
5790                                require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader; }
5791 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
5792 enabled libopenjpeg       && { { check_lib openjpeg-2.1/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5793                                check_lib openjpeg-2.1/openjpeg.h opj_version -lopenjp2 ||
5794                                { check_lib openjpeg-2.0/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5795                                { check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5796                                { check_lib openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5797                                die "ERROR: libopenjpeg not found"; }
5798 enabled libopenmpt        && require_pkg_config "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create
5799 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
5800 enabled libpulse          && require_pkg_config libpulse pulse/pulseaudio.h pa_context_new
5801 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
5802 enabled librubberband     && require_pkg_config "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new
5803 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
5804 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
5805 enabled libsmbclient      && { use_pkg_config smbclient libsmbclient.h smbc_init ||
5806                                require smbclient libsmbclient.h smbc_init -lsmbclient; }
5807 enabled libsnappy         && require snappy snappy-c.h snappy_compress -lsnappy
5808 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr && LIBSOXR="-lsoxr"
5809 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
5810 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
5811 enabled libtesseract      && require_pkg_config tesseract tesseract/capi.h TessBaseAPICreate
5812 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
5813 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
5814                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
5815                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
5816 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
5817 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
5818 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
5819 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
5820
5821 enabled libvpx            && {
5822     enabled libvpx_vp8_decoder && {
5823         use_pkg_config "vpx >= 0.9.1" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
5824             check_lib "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
5825                 die "ERROR: libvpx decoder version must be >=0.9.1";
5826     }
5827     enabled libvpx_vp8_encoder && {
5828         use_pkg_config "vpx >= 0.9.7" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
5829             check_lib "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
5830                 die "ERROR: libvpx encoder version must be >=0.9.7";
5831     }
5832     enabled libvpx_vp9_decoder && {
5833         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
5834             check_lib "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx ||
5835                 disable libvpx_vp9_decoder;
5836     }
5837     enabled libvpx_vp9_encoder && {
5838         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
5839             check_lib "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx ||
5840                 disable libvpx_vp9_encoder;
5841     }
5842     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
5843         die "libvpx enabled but no supported decoders found"
5844     fi
5845 }
5846
5847 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
5848 enabled libwebp           && {
5849     enabled libwebp_encoder      && require_pkg_config "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
5850     enabled libwebp_anim_encoder && { use_pkg_config "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit || disable libwebp_anim_encoder; } }
5851 enabled libx264           && { use_pkg_config x264 "stdint.h x264.h" x264_encoder_encode ||
5852                                { require libx264 "stdint.h x264.h" x264_encoder_encode -lx264 &&
5853                                  warn "using libx264 without pkg-config"; } } &&
5854                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
5855                                die "ERROR: libx264 must be installed and version must be >= 0.118."; } &&
5856                              { check_cpp_condition x264.h "X264_MPEG2" &&
5857                                enable libx262; }
5858 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
5859                              { check_cpp_condition x265.h "X265_BUILD >= 68" ||
5860                                die "ERROR: libx265 version must be >= 68."; }
5861 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode -lxavs
5862 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
5863 enabled libzimg           && require_pkg_config "zimg >= 2.3.0" zimg.h zimg_get_api_version
5864 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
5865 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi &&
5866                              { check_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
5867                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
5868 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
5869 enabled mmal              && { check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
5870                                 { ! enabled cross_compile && {
5871                                     add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline ;
5872                                     add_extralibs -L/opt/vc/lib/ -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ;
5873                                     check_lib interface/mmal/mmal.h mmal_port_connect ; }
5874                                 check_lib interface/mmal/mmal.h mmal_port_connect ; } ||
5875                                die "ERROR: mmal not found"; }
5876 enabled mmal && check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"
5877
5878 enabled netcdf            && require_pkg_config netcdf netcdf.h nc_inq_libvers
5879 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
5880                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
5881                                die "ERROR: openal not found"; } &&
5882                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
5883                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
5884 enabled opencl            && { check_lib OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
5885                                check_lib CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
5886                                die "ERROR: opencl not found"; } &&
5887                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
5888                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
5889                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
5890 enabled opengl            && { check_lib GL/glx.h glXGetProcAddress "-lGL" ||
5891                                check_lib windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
5892                                check_lib OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
5893                                check_lib ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
5894                                die "ERROR: opengl not found."
5895                              }
5896 enabled omx_rpi && enable omx
5897 enabled omx               && { check_header OMX_Core.h ||
5898                                 { ! enabled cross_compile && enabled omx_rpi && {
5899                                     add_cflags -isystem/opt/vc/include/IL ; }
5900                                 check_header OMX_Core.h ; } ||
5901                                die "ERROR: OpenMAX IL headers not found"; }
5902 enabled openssl           && { use_pkg_config openssl openssl/ssl.h OPENSSL_init_ssl ||
5903                                use_pkg_config openssl openssl/ssl.h SSL_library_init ||
5904                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
5905                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
5906                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
5907                                die "ERROR: openssl not found"; }
5908 enabled qtkit_indev      && { check_header_objcc QTKit/QTKit.h || disable qtkit_indev; }
5909
5910 # libdc1394 check
5911 if enabled libdc1394; then
5912     { require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new &&
5913         enable libdc1394_2; } ||
5914     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
5915         enable libdc1394_1; } ||
5916     die "ERROR: No version of libdc1394 found "
5917 fi
5918
5919 if enabled gcrypt; then
5920     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
5921     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
5922         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
5923         gcrypt_libs=$("${GCRYPT_CONFIG}" --libs)
5924         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_libs ||
5925             die "ERROR: gcrypt not found"
5926         add_cflags $gcrypt_cflags && add_extralibs $gcrypt_libs
5927     else
5928         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
5929     fi
5930 fi
5931
5932 disabled sdl && disable sdl2
5933 if ! disabled sdl2; then
5934     SDL2_CONFIG="${cross_prefix}sdl2-config"
5935     if check_pkg_config sdl2 SDL_events.h SDL_PollEvent; then
5936         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
5937         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
5938         check_func SDL_Init $sdl2_libs $sdl2_cflags && enable sdl2
5939     else
5940       if "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
5941         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
5942         sdl2_libs=$("${SDL2_CONFIG}" --libs)
5943         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
5944         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
5945         check_func SDL_Init $sdl2_libs $sdl2_cflags && enable sdl2
5946       fi
5947     fi
5948     if test $target_os = "mingw32"; then
5949         sdl2_libs="$sdl2_libs -mconsole"
5950     fi
5951 fi
5952 enabled sdl2 && enable sdl && add_cflags $sdl2_cflags && add_extralibs $sdl2_libs
5953
5954 disabled securetransport || { check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5955     check_lib "Security/SecureTransport.h Security/Security.h" "SSLCreateContext SecItemImport" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5956     enable securetransport; }
5957
5958 disabled schannel || { check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
5959                        check_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" && enable schannel && add_extralibs -lsecur32; }
5960
5961 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
5962 enabled makeinfo \
5963     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
5964     && enable makeinfo_html || disable makeinfo_html
5965 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
5966 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
5967 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
5968 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
5969
5970 check_header linux/fb.h
5971 check_header linux/videodev.h
5972 check_header linux/videodev2.h
5973 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5974
5975 check_header sys/videoio.h
5976 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5977
5978 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
5979 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
5980 # w32api 3.12 had it defined wrong
5981 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
5982
5983 check_type "dshow.h" IBaseFilter
5984
5985 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
5986 { check_header dev/bktr/ioctl_meteor.h &&
5987   check_header dev/bktr/ioctl_bt848.h; } ||
5988 { check_header machine/ioctl_meteor.h &&
5989   check_header machine/ioctl_bt848.h; } ||
5990 { check_header dev/video/meteor/ioctl_meteor.h &&
5991   check_header dev/video/bktr/ioctl_bt848.h; } ||
5992 check_header dev/ic/bt8xx.h
5993
5994 check_header sndio.h
5995 if check_struct sys/soundcard.h audio_buf_info bytes; then
5996     enable_safe sys/soundcard.h
5997 else
5998     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
5999     #include <sys/soundcard.h>
6000     audio_buf_info abc;
6001 EOF
6002 fi
6003 check_header soundcard.h
6004
6005 enabled_any alsa_indev alsa_outdev &&
6006     check_lib alsa/asoundlib.h snd_pcm_htimestamp -lasound
6007
6008 enabled jack_indev && check_lib jack/jack.h jack_client_open -ljack &&
6009     check_func jack_port_get_latency_range -ljack
6010
6011 enabled_any sndio_indev sndio_outdev && check_lib sndio.h sio_open -lsndio
6012
6013 if enabled libcdio; then
6014     check_lib "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6015     check_lib "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6016     die "ERROR: No usable libcdio/cdparanoia found"
6017 fi
6018
6019 enabled xlib &&
6020     check_lib X11/Xlib.h XOpenDisplay -lX11 || disable xlib
6021
6022 if ! disabled libxcb; then
6023     check_pkg_config "xcb >= 1.4" xcb/xcb.h xcb_connect || {
6024         enabled libxcb && die "ERROR: libxcb >= 1.4 not found";
6025     } && enable libxcb
6026
6027 if enabled libxcb; then
6028     disabled libxcb_shm || {
6029         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
6030             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
6031         } && check_header sys/shm.h && enable libxcb_shm; }
6032
6033     disabled libxcb_xfixes || {
6034         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
6035             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
6036         } && enable libxcb_xfixes; }
6037
6038     disabled libxcb_shape || {
6039         check_pkg_config xcb-shape xcb/shape.h xcb_shape_get_rectangles || {
6040             enabled libxcb_shape && die "ERROR: libxcb_shape not found";
6041         } && enable libxcb_shape; }
6042
6043     add_cflags $xcb_cflags $xcb_shm_cflags $xcb_xfixes_cflags $xcb_shape_cflags
6044     add_extralibs $xcb_libs $xcb_shm_libs $xcb_xfixes_libs $xcb_shape_libs
6045 fi
6046 fi
6047
6048 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6049
6050 enabled dxva2api_h &&
6051     check_cc <<EOF && enable dxva2api_cobj
6052 #define _WIN32_WINNT 0x0600
6053 #define COBJMACROS
6054 #include <windows.h>
6055 #include <d3d9.h>
6056 #include <dxva2api.h>
6057 int main(void) { IDirectXVideoDecoder *o = NULL; IDirectXVideoDecoder_Release(o); return 0; }
6058 EOF
6059
6060 enabled vaapi &&
6061     check_lib va/va.h vaInitialize -lva ||
6062     disable vaapi
6063
6064 enabled vaapi &&
6065     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
6066     disable vaapi
6067
6068 if enabled vaapi ; then
6069     enabled xlib &&
6070     check_lib "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 &&
6071     enable vaapi_x11
6072
6073     check_lib "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm &&
6074     enable vaapi_drm
6075 fi
6076
6077 enabled vdpau &&
6078     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
6079     disable vdpau
6080
6081 enabled vdpau && enabled xlib &&
6082     check_lib "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
6083     enable vdpau_x11
6084
6085 if enabled x86; then
6086     case $target_os in
6087         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6088             ;;
6089         *)
6090             disable cuda cuvid nvenc
6091             ;;
6092     esac
6093 else
6094     disable cuda cuvid nvenc
6095 fi
6096
6097 enabled nvenc &&
6098     check_cc -I$source_path <<EOF || disable nvenc
6099 #include "compat/nvenc/nvEncodeAPI.h"
6100 NV_ENCODE_API_FUNCTION_LIST flist;
6101 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6102 int main(void) { return 0; }
6103 EOF
6104
6105 # Funny iconv installations are not unusual, so check it after all flags have been set
6106 disabled iconv || check_func_headers iconv.h iconv || check_lib iconv.h iconv -liconv || disable iconv
6107
6108 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6109
6110 # add some useful compiler flags if supported
6111 check_cflags -Wdeclaration-after-statement
6112 check_cflags -Wall
6113 check_cflags -Wdisabled-optimization
6114 check_cflags -Wpointer-arith
6115 check_cflags -Wredundant-decls
6116 check_cflags -Wwrite-strings
6117 check_cflags -Wtype-limits
6118 check_cflags -Wundef
6119 check_cflags -Wmissing-prototypes
6120 check_cflags -Wno-pointer-to-int-cast
6121 check_cflags -Wstrict-prototypes
6122 check_cflags -Wempty-body
6123 enabled extra_warnings && check_cflags -Winline
6124 enabled extra_warnings && check_cflags -Wcast-qual
6125
6126 check_disable_warning(){
6127     warning_flag=-W${1#-Wno-}
6128     test_cflags $warning_flag && add_cflags $1
6129 }
6130
6131 check_disable_warning -Wno-parentheses
6132 check_disable_warning -Wno-switch
6133 check_disable_warning -Wno-format-zero-length
6134 check_disable_warning -Wno-pointer-sign
6135 check_disable_warning -Wno-unused-const-variable
6136
6137 # add some linker flags
6138 check_ldflags -Wl,--warn-common
6139 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6140 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
6141 enabled rpath && add_ldlibflags -Wl,-rpath,$libdir
6142 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6143
6144 # add some strip flags
6145 # -wN '..@*' is more selective than -x, but not available everywhere.
6146 check_stripflags -wN \'..@*\' || check_stripflags -x
6147
6148 enabled neon_clobber_test &&
6149     check_ldflags -Wl,--wrap,avcodec_open2              \
6150                   -Wl,--wrap,avcodec_decode_audio4      \
6151                   -Wl,--wrap,avcodec_decode_video2      \
6152                   -Wl,--wrap,avcodec_decode_subtitle2   \
6153                   -Wl,--wrap,avcodec_encode_audio2      \
6154                   -Wl,--wrap,avcodec_encode_video2      \
6155                   -Wl,--wrap,avcodec_send_packet        \
6156                   -Wl,--wrap,avcodec_receive_frame      \
6157                   -Wl,--wrap,avcodec_send_frame         \
6158                   -Wl,--wrap,avcodec_receive_packet     \
6159                   -Wl,--wrap,avcodec_encode_subtitle    \
6160                   -Wl,--wrap,swr_convert                \
6161                   -Wl,--wrap,avresample_convert ||
6162     disable neon_clobber_test
6163
6164 enabled xmm_clobber_test &&
6165     check_ldflags -Wl,--wrap,avcodec_open2              \
6166                   -Wl,--wrap,avcodec_decode_audio4      \
6167                   -Wl,--wrap,avcodec_decode_video2      \
6168                   -Wl,--wrap,avcodec_decode_subtitle2   \
6169                   -Wl,--wrap,avcodec_encode_audio2      \
6170                   -Wl,--wrap,avcodec_encode_video2      \
6171                   -Wl,--wrap,avcodec_encode_subtitle    \
6172                   -Wl,--wrap,avcodec_send_packet        \
6173                   -Wl,--wrap,avcodec_receive_frame      \
6174                   -Wl,--wrap,avcodec_send_frame         \
6175                   -Wl,--wrap,avcodec_receive_packet     \
6176                   -Wl,--wrap,swr_convert                \
6177                   -Wl,--wrap,avresample_convert         \
6178                   -Wl,--wrap,sws_scale ||
6179     disable xmm_clobber_test
6180
6181 check_ld "cc" <<EOF && enable proper_dce
6182 extern const int array[512];
6183 static inline int func(void) { return array[0]; }
6184 int main(void) { return 0; }
6185 EOF
6186
6187 if enabled proper_dce; then
6188     echo "X { local: *; };" > $TMPV
6189     if test_ldflags -Wl,${version_script},$TMPV; then
6190         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6191         check_cc <<EOF && enable symver_asm_label
6192 void ff_foo(void) __asm__ ("av_foo@VERSION");
6193 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6194 EOF
6195         check_cc <<EOF && enable symver_gnu_asm
6196 __asm__(".symver ff_foo,av_foo@VERSION");
6197 void ff_foo(void) {}
6198 EOF
6199     fi
6200 fi
6201
6202 if [ -z "$optflags" ]; then
6203     if enabled small; then
6204         optflags=$cflags_size
6205     elif enabled optimizations; then
6206         optflags=$cflags_speed
6207     else
6208         optflags=$cflags_noopt
6209     fi
6210 fi
6211
6212 check_optflags(){
6213     check_cflags "$@"
6214     enabled lto && check_ldflags "$@"
6215 }
6216
6217
6218 if enabled lto; then
6219     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6220     check_cflags  -flto
6221     check_ldflags -flto $cpuflags
6222     disable inline_asm_direct_symbol_refs
6223 fi
6224
6225 check_optflags $optflags
6226 check_optflags -fno-math-errno
6227 check_optflags -fno-signed-zeros
6228
6229 enabled ftrapv && check_cflags -ftrapv
6230
6231 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6232 int x;
6233 EOF
6234
6235
6236 if enabled icc; then
6237     # Just warnings, no remarks
6238     check_cflags -w1
6239     # -wd: Disable following warnings
6240     # 144, 167, 556: -Wno-pointer-sign
6241     # 188: enumerated type mixed with another type
6242     # 1292: attribute "foo" ignored
6243     # 1419: external declaration in primary source file
6244     # 10006: ignoring unknown option -fno-signed-zeros
6245     # 10148: ignoring unknown option -Wno-parentheses
6246     # 10156: ignoring option '-W'; no argument required
6247     # 13200: No EMMS instruction before call to function
6248     # 13203: No EMMS instruction before return from function
6249     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6250     # 11030: Warning unknown option --as-needed
6251     # 10156: ignoring option '-export'; no argument required
6252     check_ldflags -wd10156,11030
6253     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6254     enable ebp_available
6255     # The test above does not test linking
6256     enabled lto && disable symver_asm_label
6257     if enabled x86_32; then
6258         icc_version=$($cc -dumpversion)
6259         test ${icc_version%%.*} -ge 11 &&
6260             check_cflags -falign-stack=maintain-16-byte ||
6261             disable aligned_stack
6262     fi
6263 elif enabled ccc; then
6264     # disable some annoying warnings
6265     add_cflags -msg_disable bitnotint
6266     add_cflags -msg_disable mixfuncvoid
6267     add_cflags -msg_disable nonstandcast
6268     add_cflags -msg_disable unsupieee
6269 elif enabled gcc; then
6270     check_optflags -fno-tree-vectorize
6271     check_cflags -Werror=format-security
6272     check_cflags -Werror=implicit-function-declaration
6273     check_cflags -Werror=missing-prototypes
6274     check_cflags -Werror=return-type
6275     check_cflags -Werror=vla
6276     check_cflags -Wformat
6277     check_cflags -fdiagnostics-color=auto
6278     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6279 elif enabled llvm_gcc; then
6280     check_cflags -mllvm -stack-alignment=16
6281 elif enabled clang; then
6282     check_cflags -mllvm -stack-alignment=16
6283     check_cflags -mstack-alignment=16
6284     check_cflags -Qunused-arguments
6285     check_cflags -Werror=implicit-function-declaration
6286     check_cflags -Werror=missing-prototypes
6287     check_cflags -Werror=return-type
6288 elif enabled cparser; then
6289     add_cflags -Wno-missing-variable-declarations
6290     add_cflags -Wno-empty-statement
6291 elif enabled armcc; then
6292     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6293     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6294     # 2523: use of inline assembly is deprecated
6295     add_cflags -W${armcc_opt},--diag_suppress=2523
6296     add_cflags -W${armcc_opt},--diag_suppress=1207
6297     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6298     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6299     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6300     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6301 elif enabled tms470; then
6302     add_cflags -pds=824 -pds=837
6303     disable inline_asm
6304 elif enabled pathscale; then
6305     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6306 elif enabled_any msvc icl; then
6307     enabled x86_32 && disable aligned_stack
6308     enabled_all x86_32 debug && add_cflags -Oy-
6309     enabled debug && add_ldflags -debug
6310     enable pragma_deprecated
6311     if enabled icl; then
6312         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6313         # (correctly) on icl 13.x.
6314         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6315             add_cflags -Qansi-alias
6316         # Some inline asm is not compilable in debug
6317         if enabled debug; then
6318             disable ebp_available
6319             disable ebx_available
6320         fi
6321     fi
6322     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6323     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
6324     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6325     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6326     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6327     # MSVC 2013 and newer can handle it fine.
6328     # If this declspec fails, force including stdlib.h before the restrict redefinition
6329     # happens in config.h.
6330     if [ $_restrict != restrict ]; then
6331         check_cc <<EOF || add_cflags -FIstdlib.h
6332 __declspec($_restrict) void* foo(int);
6333 EOF
6334     fi
6335     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6336     # Issue has been fixed in MSVC v19.00.24218.
6337     check_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6338         check_cflags -d2SSAOptimizer-
6339     # enable utf-8 source processing on VS2015 U2 and newer
6340     check_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6341         add_cflags -utf-8
6342 fi
6343
6344 for pfx in "" host_; do
6345     varname=${pfx%_}cc_type
6346     eval "type=\$$varname"
6347     if [ $type = "msvc" ]; then
6348         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6349 static inline int foo(int a) { return a; }
6350 EOF
6351     fi
6352 done
6353
6354 case $as_type in
6355     clang)
6356         add_asflags -Qunused-arguments
6357     ;;
6358 esac
6359
6360 case $ld_type in
6361     clang)
6362         check_ldflags -Qunused-arguments
6363     ;;
6364 esac
6365
6366 case $target_os in
6367     osf1)
6368         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
6369     ;;
6370     plan9)
6371         add_cppflags -Dmain=plan9_main
6372     ;;
6373 esac
6374
6375 enable frame_thread_encoder
6376
6377 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6378
6379 check_deps $CONFIG_LIST       \
6380            $CONFIG_EXTRA      \
6381            $HAVE_LIST         \
6382            $ALL_COMPONENTS    \
6383
6384 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"
6385
6386
6387 if test $target_os = "haiku"; then
6388     disable memalign
6389     disable posix_memalign
6390 fi
6391
6392 enabled_all dxva2 dxva2api_cobj CoTaskMemFree &&
6393     prepend ffmpeg_libs $($ldflags_filter "-lole32") &&
6394     enable dxva2_lib
6395
6396 # add_dep lib dep
6397 # -> enable ${lib}_deps_${dep}
6398 # -> add $dep to ${lib}_deps only once
6399 add_dep() {
6400     lib=$1
6401     dep=$2
6402     enabled "${lib}_deps_${dep}" && return 0
6403     enable  "${lib}_deps_${dep}"
6404     prepend "${lib}_deps" $dep
6405 }
6406
6407 # merge deps lib components
6408 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
6409 merge_deps() {
6410     lib=$1
6411     shift
6412     for comp in $*; do
6413         enabled $comp || continue
6414         eval "dep=\"\$${comp}_deps\""
6415         for d in $dep; do
6416             add_dep $lib $d
6417         done
6418     done
6419 }
6420
6421 merge_deps libavfilter $FILTER_LIST
6422
6423 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6424
6425 for thread in $THREADS_LIST; do
6426     if enabled $thread; then
6427         test -n "$thread_type" &&
6428             die "ERROR: Only one thread type must be selected." ||
6429             thread_type="$thread"
6430     fi
6431 done
6432
6433 if disabled stdatomic_h; then
6434     if enabled atomics_gcc; then
6435         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6436     elif enabled atomics_win32; then
6437         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6438     elif enabled atomics_suncc; then
6439         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6440     elif enabled pthreads; then
6441         add_compat atomics/pthread/stdatomic.o
6442         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6443     else
6444         enabled threads && die "Threading is enabled, but no atomics are available"
6445         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6446     fi
6447 fi
6448
6449 # Check if requested libraries were found.
6450 for lib in $AUTODETECT_LIBS; do
6451     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6452 done
6453
6454 enabled zlib && add_cppflags -DZLIB_CONST
6455
6456 # conditional library dependencies, in linking order
6457 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6458 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6459 enabled aresample_filter    && prepend avfilter_deps "swresample"
6460 enabled asyncts_filter      && prepend avfilter_deps "avresample"
6461 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6462 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6463 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6464 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6465 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6466 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6467 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6468 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6469 enabled pan_filter          && prepend avfilter_deps "swresample"
6470 enabled pp_filter           && prepend avfilter_deps "postproc"
6471 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6472 enabled resample_filter && prepend avfilter_deps "avresample"
6473 enabled sab_filter          && prepend avfilter_deps "swscale"
6474 enabled scale_filter    && prepend avfilter_deps "swscale"
6475 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6476 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6477 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6478 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6479 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6480 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6481 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6482 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6483 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6484
6485 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6486
6487 enabled opus_decoder    && prepend avcodec_deps "swresample"
6488
6489 expand_deps(){
6490     lib_deps=${1}_deps
6491     eval "deps=\$$lib_deps"
6492     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6493     unique $lib_deps
6494 }
6495
6496 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6497 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6498
6499 map 'expand_deps $v' $LIBRARY_LIST
6500
6501 echo "install prefix            $prefix"
6502 echo "source path               $source_path"
6503 echo "C compiler                $cc"
6504 echo "C library                 $libc_type"
6505 if test "$host_cc" != "$cc"; then
6506     echo "host C compiler           $host_cc"
6507     echo "host C library            $host_libc_type"
6508 fi
6509 echo "ARCH                      $arch ($cpu)"
6510 if test "$build_suffix" != ""; then
6511     echo "build suffix              $build_suffix"
6512 fi
6513 if test "$progs_suffix" != ""; then
6514     echo "progs suffix              $progs_suffix"
6515 fi
6516 if test "$extra_version" != ""; then
6517     echo "version string suffix     $extra_version"
6518 fi
6519 echo "big-endian                ${bigendian-no}"
6520 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6521 if enabled x86; then
6522     echo "${yasmexe}                      ${yasm-no}"
6523     echo "MMX enabled               ${mmx-no}"
6524     echo "MMXEXT enabled            ${mmxext-no}"
6525     echo "3DNow! enabled            ${amd3dnow-no}"
6526     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6527     echo "SSE enabled               ${sse-no}"
6528     echo "SSSE3 enabled             ${ssse3-no}"
6529     echo "AESNI enabled             ${aesni-no}"
6530     echo "AVX enabled               ${avx-no}"
6531     echo "XOP enabled               ${xop-no}"
6532     echo "FMA3 enabled              ${fma3-no}"
6533     echo "FMA4 enabled              ${fma4-no}"
6534     echo "i686 features enabled     ${i686-no}"
6535     echo "CMOV is fast              ${fast_cmov-no}"
6536     echo "EBX available             ${ebx_available-no}"
6537     echo "EBP available             ${ebp_available-no}"
6538 fi
6539 if enabled aarch64; then
6540     echo "NEON enabled              ${neon-no}"
6541     echo "VFP enabled               ${vfp-no}"
6542 fi
6543 if enabled arm; then
6544     echo "ARMv5TE enabled           ${armv5te-no}"
6545     echo "ARMv6 enabled             ${armv6-no}"
6546     echo "ARMv6T2 enabled           ${armv6t2-no}"
6547     echo "VFP enabled               ${vfp-no}"
6548     echo "NEON enabled              ${neon-no}"
6549     echo "THUMB enabled             ${thumb-no}"
6550 fi
6551 if enabled mips; then
6552     echo "MIPS FPU enabled          ${mipsfpu-no}"
6553     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6554     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6555     echo "MIPS MSA enabled          ${msa-no}"
6556     echo "LOONGSON MMI enabled      ${mmi-no}"
6557 fi
6558 if enabled ppc; then
6559     echo "AltiVec enabled           ${altivec-no}"
6560     echo "VSX enabled               ${vsx-no}"
6561     echo "POWER8 enabled            ${power8-no}"
6562     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6563     echo "dcbzl available           ${dcbzl-no}"
6564 fi
6565 echo "debug symbols             ${debug-no}"
6566 echo "strip symbols             ${stripping-no}"
6567 echo "optimize for size         ${small-no}"
6568 echo "optimizations             ${optimizations-no}"
6569 echo "static                    ${static-no}"
6570 echo "shared                    ${shared-no}"
6571 echo "postprocessing support    ${postproc-no}"
6572 echo "new filter support        ${avfilter-no}"
6573 echo "network support           ${network-no}"
6574 echo "threading support         ${thread_type-no}"
6575 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6576 echo "SDL2 support              ${sdl2-no}"
6577 echo "opencl enabled            ${opencl-no}"
6578 echo "JNI support               ${jni-no}"
6579 echo "texi2html enabled         ${texi2html-no}"
6580 echo "perl enabled              ${perl-no}"
6581 echo "pod2man enabled           ${pod2man-no}"
6582 echo "makeinfo enabled          ${makeinfo-no}"
6583 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6584 test -n "$random_seed" &&
6585     echo "random seed               ${random_seed}"
6586 echo
6587
6588 echo "Enabled programs:"
6589 print_enabled '' $PROGRAM_LIST | print_in_columns
6590 echo
6591
6592 echo "External libraries:"
6593 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_in_columns
6594 echo
6595
6596 echo "External libraries providing hardware acceleration:"
6597 print_enabled '' $HWACCEL_LIBRARY_LIST | print_in_columns
6598 echo
6599
6600 echo "Libraries:"
6601 print_enabled '' $LIBRARY_LIST | print_in_columns
6602 echo
6603
6604 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6605     echo "Enabled ${type}s:"
6606     eval list=\$$(toupper $type)_LIST
6607     print_enabled '_*' $list | print_in_columns
6608     echo
6609 done
6610
6611 license="LGPL version 2.1 or later"
6612 if enabled nonfree; then
6613     license="nonfree and unredistributable"
6614 elif enabled gplv3; then
6615     license="GPL version 3 or later"
6616 elif enabled lgplv3; then
6617     license="LGPL version 3 or later"
6618 elif enabled gpl; then
6619     license="GPL version 2 or later"
6620 fi
6621
6622 echo "License: $license"
6623
6624 echo "Creating config.mak, config.h, and doc/config.texi..."
6625
6626 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6627
6628 enabled stripping || strip="echo skipping strip"
6629
6630 config_files="$TMPH config.mak doc/config.texi"
6631
6632 cat > config.mak <<EOF
6633 # Automatically generated by configure - do not modify!
6634 ifndef FFMPEG_CONFIG_MAK
6635 FFMPEG_CONFIG_MAK=1
6636 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6637 prefix=$prefix
6638 LIBDIR=\$(DESTDIR)$libdir
6639 SHLIBDIR=\$(DESTDIR)$shlibdir
6640 INCDIR=\$(DESTDIR)$incdir
6641 BINDIR=\$(DESTDIR)$bindir
6642 DATADIR=\$(DESTDIR)$datadir
6643 DOCDIR=\$(DESTDIR)$docdir
6644 MANDIR=\$(DESTDIR)$mandir
6645 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6646 INSTALL_NAME_DIR=$install_name_dir
6647 SRC_PATH=$source_path
6648 SRC_LINK=$source_link
6649 ifndef MAIN_MAKEFILE
6650 SRC_PATH:=\$(SRC_PATH:.%=..%)
6651 endif
6652 CC_IDENT=$cc_ident
6653 ARCH=$arch
6654 INTRINSICS=$intrinsics
6655 CC=$cc
6656 CXX=$cxx
6657 AS=$as
6658 OBJCC=$objcc
6659 LD=$ld
6660 DEPCC=$dep_cc
6661 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6662 DEPAS=$as
6663 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6664 YASM=$yasmexe
6665 DEPYASM=$yasmexe
6666 AR=$ar
6667 ARFLAGS=$arflags
6668 AR_O=$ar_o
6669 RANLIB=$ranlib
6670 STRIP=$strip
6671 CP=cp -p
6672 LN_S=$ln_s
6673 CPPFLAGS=$CPPFLAGS
6674 CFLAGS=$CFLAGS
6675 CXXFLAGS=$CXXFLAGS
6676 OBJCFLAGS=$OBJCFLAGS
6677 ASFLAGS=$ASFLAGS
6678 AS_C=$AS_C
6679 AS_O=$AS_O
6680 OBJCC_C=$OBJCC_C
6681 OBJCC_E=$OBJCC_E
6682 OBJCC_O=$OBJCC_O
6683 CC_C=$CC_C
6684 CC_E=$CC_E
6685 CC_O=$CC_O
6686 CXX_C=$CXX_C
6687 CXX_O=$CXX_O
6688 LD_O=$LD_O
6689 LD_LIB=$LD_LIB
6690 LD_PATH=$LD_PATH
6691 DLLTOOL=$dlltool
6692 WINDRES=$windres
6693 DEPWINDRES=$dep_cc
6694 DOXYGEN=$doxygen
6695 LDFLAGS=$LDFLAGS
6696 LDEXEFLAGS=$LDEXEFLAGS
6697 LDLIBFLAGS=$LDLIBFLAGS
6698 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
6699 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
6700 YASMFLAGS=$YASMFLAGS
6701 BUILDSUF=$build_suffix
6702 PROGSSUF=$progs_suffix
6703 FULLNAME=$FULLNAME
6704 LIBPREF=$LIBPREF
6705 LIBSUF=$LIBSUF
6706 LIBNAME=$LIBNAME
6707 SLIBPREF=$SLIBPREF
6708 SLIBSUF=$SLIBSUF
6709 EXESUF=$EXESUF
6710 EXTRA_VERSION=$extra_version
6711 CCDEP=$CCDEP
6712 CXXDEP=$CXXDEP
6713 CCDEP_FLAGS=$CCDEP_FLAGS
6714 ASDEP=$ASDEP
6715 ASDEP_FLAGS=$ASDEP_FLAGS
6716 CC_DEPFLAGS=$CC_DEPFLAGS
6717 AS_DEPFLAGS=$AS_DEPFLAGS
6718 HOSTCC=$host_cc
6719 HOSTLD=$host_ld
6720 HOSTCFLAGS=$host_cflags
6721 HOSTCPPFLAGS=$host_cppflags
6722 HOSTEXESUF=$HOSTEXESUF
6723 HOSTLDFLAGS=$host_ldflags
6724 HOSTLIBS=$host_libs
6725 DEPHOSTCC=$host_cc
6726 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
6727 HOSTCCDEP=$HOSTCCDEP
6728 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
6729 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
6730 HOSTCC_C=$HOSTCC_C
6731 HOSTCC_O=$HOSTCC_O
6732 HOSTLD_O=$HOSTLD_O
6733 TARGET_EXEC=$target_exec $target_exec_args
6734 TARGET_PATH=$target_path
6735 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
6736 CFLAGS-ffplay=${sdl2_cflags}
6737 ZLIB=$($ldflags_filter -lz)
6738 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
6739 EXTRALIBS=$extralibs
6740 COMPAT_OBJS=$compat_objs
6741 EXEOBJS=$exeobjs
6742 INSTALL=$install
6743 LIBTARGET=${LIBTARGET}
6744 SLIBNAME=${SLIBNAME}
6745 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
6746 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
6747 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
6748 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
6749 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
6750 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
6751 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
6752 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
6753 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
6754 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
6755 NOREDZONE_FLAGS=$noredzone_flags
6756 EOF
6757
6758 get_version(){
6759     lcname=lib${1}
6760     name=$(toupper $lcname)
6761     file=$source_path/$lcname/version.h
6762     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
6763     enabled raise_major && eval ${name}_VERSION_MAJOR=$((${name}_VERSION_MAJOR+100))
6764     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
6765     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
6766     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
6767     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
6768 }
6769
6770 map 'get_version $v' $LIBRARY_LIST
6771
6772 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> config.mak' $LIBRARY_LIST
6773
6774 print_program_libs(){
6775     eval "program_libs=\$${1}_libs"
6776     eval echo "LIBS-${1}=${program_libs}" >> config.mak
6777 }
6778
6779 map 'print_program_libs $v' $PROGRAM_LIST
6780
6781 cat > $TMPH <<EOF
6782 /* Automatically generated by configure - do not modify! */
6783 #ifndef FFMPEG_CONFIG_H
6784 #define FFMPEG_CONFIG_H
6785 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
6786 #define FFMPEG_LICENSE "$(c_escape $license)"
6787 #define CONFIG_THIS_YEAR 2017
6788 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
6789 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
6790 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
6791 #define av_restrict $_restrict
6792 #define EXTERN_PREFIX "${extern_prefix}"
6793 #define EXTERN_ASM ${extern_prefix}
6794 #define BUILDSUF "$build_suffix"
6795 #define SLIBSUF "$SLIBSUF"
6796 #define HAVE_MMX2 HAVE_MMXEXT
6797 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
6798 EOF
6799
6800 test -n "$assert_level" &&
6801     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
6802
6803 test -n "$malloc_prefix" &&
6804     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
6805
6806 if enabled yasm; then
6807     append config_files $TMPASM
6808     printf '' >$TMPASM
6809 fi
6810
6811 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
6812
6813
6814 mkdir -p doc
6815 mkdir -p tests
6816 mkdir -p tests/api
6817 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
6818
6819 print_config ARCH_   "$config_files" $ARCH_LIST
6820 print_config HAVE_   "$config_files" $HAVE_LIST
6821 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
6822                                      $CONFIG_EXTRA      \
6823                                      $ALL_COMPONENTS    \
6824
6825 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
6826 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
6827
6828 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
6829 cp_if_changed $TMPH config.h
6830 touch .config
6831
6832 enabled yasm && cp_if_changed $TMPASM config.asm
6833
6834 cat > $TMPH <<EOF
6835 /* Generated by ffconf */
6836 #ifndef AVUTIL_AVCONFIG_H
6837 #define AVUTIL_AVCONFIG_H
6838 EOF
6839
6840 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
6841
6842 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
6843
6844 cp_if_changed $TMPH libavutil/avconfig.h
6845
6846 if test -n "$WARNINGS"; then
6847     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
6848     enabled fatal_warnings && exit 1
6849 fi
6850
6851 # generate the lists of enabled components
6852 print_enabled_components(){
6853     file=$1
6854     struct_name=$2
6855     name=$3
6856     shift 3
6857     echo "static const $struct_name *$name[] = {" > $TMPH
6858     for c in $*; do
6859         enabled $c && printf "    &ff_%s,\n" $c >> $TMPH
6860     done
6861     echo "    NULL };" >> $TMPH
6862     cp_if_changed $TMPH $file
6863 }
6864
6865 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
6866 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
6867
6868 # build pkg-config files
6869
6870 lib_version(){
6871     eval printf "\"lib${1}${build_suffix} >= \$LIB$(toupper ${1})_VERSION, \""
6872 }
6873
6874 pkgconfig_generate(){
6875     name=$1
6876     shortname=${name#lib}${build_suffix}
6877     comment=$2
6878     version=$3
6879     libs=$4
6880     requires=$(map 'lib_version $v' $(eval echo \$${name#lib}_deps))
6881     requires=${requires%, }
6882     enabled ${name#lib} || return 0
6883     mkdir -p $name
6884     cat <<EOF > $name/$name${build_suffix}.pc
6885 prefix=$prefix
6886 exec_prefix=\${prefix}
6887 libdir=$libdir
6888 includedir=$incdir
6889
6890 Name: $name
6891 Description: $comment
6892 Version: $version
6893 Requires: $(enabled shared || echo $requires)
6894 Requires.private: $(enabled shared && echo $requires)
6895 Conflicts:
6896 Libs: -L\${libdir} $(enabled rpath && echo "-Wl,-rpath,\${libdir}") -l${shortname} $(enabled shared || echo $libs)
6897 Libs.private: $(enabled shared && echo $libs)
6898 Cflags: -I\${includedir}
6899 EOF
6900
6901 mkdir -p doc/examples/pc-uninstalled
6902 includedir=${source_path}
6903 [ "$includedir" = . ] && includedir="\${pcfiledir}/../../.."
6904     cat <<EOF > doc/examples/pc-uninstalled/${name}-uninstalled.pc
6905 prefix=
6906 exec_prefix=
6907 libdir=\${pcfiledir}/../../../$name
6908 includedir=${includedir}
6909
6910 Name: $name
6911 Description: $comment
6912 Version: $version
6913 Requires: $requires
6914 Conflicts:
6915 Libs: -L\${libdir} -Wl,-rpath,\${libdir} -l${shortname} $(enabled shared || echo $libs)
6916 Cflags: -I\${includedir}
6917 EOF
6918 }
6919
6920 pkgconfig_generate libavutil     "FFmpeg utility library"               "$LIBAVUTIL_VERSION"     "$LIBRT $LIBM"
6921 pkgconfig_generate libavcodec    "FFmpeg codec library"                 "$LIBAVCODEC_VERSION"    "$extralibs"
6922 pkgconfig_generate libavformat   "FFmpeg container format library"      "$LIBAVFORMAT_VERSION"   "$extralibs"
6923 pkgconfig_generate libavdevice   "FFmpeg device handling library"       "$LIBAVDEVICE_VERSION"   "$extralibs"
6924 pkgconfig_generate libavfilter   "FFmpeg audio/video filtering library" "$LIBAVFILTER_VERSION"   "$extralibs"
6925 pkgconfig_generate libpostproc   "FFmpeg postprocessing library"        "$LIBPOSTPROC_VERSION"   ""
6926 pkgconfig_generate libavresample "Libav audio resampling library"       "$LIBAVRESAMPLE_VERSION" "$LIBM"
6927 pkgconfig_generate libswscale    "FFmpeg image rescaling library"       "$LIBSWSCALE_VERSION"    "$LIBM"
6928 pkgconfig_generate libswresample "FFmpeg audio resampling library"      "$LIBSWRESAMPLE_VERSION" "$LIBM $LIBSOXR"