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_cuvid_hwaccel_select="h264_cuvid_decoder"
2608 h264_d3d11va_hwaccel_deps="d3d11va"
2609 h264_d3d11va_hwaccel_select="h264_decoder"
2610 h264_dxva2_hwaccel_deps="dxva2"
2611 h264_dxva2_hwaccel_select="h264_decoder"
2612 h264_mediacodec_decoder_deps="mediacodec"
2613 h264_mediacodec_hwaccel_deps="mediacodec"
2614 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2615 h264_mmal_decoder_deps="mmal"
2616 h264_mmal_decoder_select="mmal"
2617 h264_mmal_hwaccel_deps="mmal"
2618 h264_omx_encoder_deps="omx"
2619 h264_qsv_hwaccel_deps="libmfx"
2620 h264_vaapi_hwaccel_deps="vaapi"
2621 h264_vaapi_hwaccel_select="h264_decoder"
2622 h264_vda_decoder_deps="vda"
2623 h264_vda_decoder_select="h264_decoder"
2624 h264_vda_hwaccel_deps="vda"
2625 h264_vda_hwaccel_select="h264_decoder"
2626 h264_vda_old_hwaccel_deps="vda"
2627 h264_vda_old_hwaccel_select="h264_decoder"
2628 h264_vdpau_decoder_deps="vdpau"
2629 h264_vdpau_decoder_select="h264_decoder"
2630 h264_vdpau_hwaccel_deps="vdpau"
2631 h264_vdpau_hwaccel_select="h264_decoder"
2632 h264_videotoolbox_hwaccel_deps="videotoolbox"
2633 h264_videotoolbox_hwaccel_select="h264_decoder"
2634 hevc_cuvid_hwaccel_deps="cuda cuvid"
2635 hevc_cuvid_hwaccel_select="hevc_cuvid_decoder"
2636 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2637 hevc_d3d11va_hwaccel_select="hevc_decoder"
2638 hevc_mediacodec_decoder_deps="mediacodec"
2639 hevc_mediacodec_hwaccel_deps="mediacodec"
2640 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2641 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2642 hevc_dxva2_hwaccel_select="hevc_decoder"
2643 hevc_qsv_hwaccel_deps="libmfx"
2644 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2645 hevc_vaapi_hwaccel_select="hevc_decoder"
2646 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2647 hevc_vdpau_hwaccel_select="hevc_decoder"
2648 mjpeg_cuvid_hwaccel_deps="cuda cuvid"
2649 mjpeg_cuvid_hwaccel_select="mjpeg_cuvid_decoder"
2650 mpeg_vdpau_decoder_deps="vdpau"
2651 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2652 mpeg_xvmc_hwaccel_deps="xvmc"
2653 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2654 mpeg1_cuvid_hwaccel_deps="cuda cuvid"
2655 mpeg1_cuvid_hwaccel_select="mpeg1_cuvid_decoder"
2656 mpeg1_vdpau_decoder_deps="vdpau"
2657 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2658 mpeg1_vdpau_hwaccel_deps="vdpau"
2659 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2660 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2661 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2662 mpeg1_xvmc_hwaccel_deps="xvmc"
2663 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2664 mpeg2_crystalhd_decoder_select="crystalhd"
2665 mpeg2_cuvid_hwaccel_deps="cuda cuvid"
2666 mpeg2_cuvid_hwaccel_select="mpeg2_cuvid_decoder"
2667 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2668 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2669 mpeg2_dxva2_hwaccel_deps="dxva2"
2670 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2671 mpeg2_mmal_decoder_deps="mmal"
2672 mpeg2_mmal_decoder_select="mmal"
2673 mpeg2_mmal_hwaccel_deps="mmal"
2674 mpeg2_qsv_hwaccel_deps="libmfx"
2675 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2676 mpeg2_vaapi_hwaccel_deps="vaapi"
2677 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2678 mpeg2_vdpau_hwaccel_deps="vdpau"
2679 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2680 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2681 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2682 mpeg2_xvmc_hwaccel_deps="xvmc"
2683 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2684 mpeg4_crystalhd_decoder_select="crystalhd"
2685 mpeg4_cuvid_hwaccel_deps="cuda cuvid"
2686 mpeg4_cuvid_hwaccel_select="mpeg4_cuvid_decoder"
2687 mpeg4_mediacodec_decoder_deps="mediacodec"
2688 mpeg4_mediacodec_hwaccel_deps="mediacodec"
2689 mpeg4_mmal_decoder_deps="mmal"
2690 mpeg4_mmal_decoder_select="mmal"
2691 mpeg4_mmal_hwaccel_deps="mmal"
2692 mpeg4_omx_encoder_deps="omx"
2693 mpeg4_vaapi_hwaccel_deps="vaapi"
2694 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2695 mpeg4_vdpau_decoder_deps="vdpau"
2696 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2697 mpeg4_vdpau_hwaccel_deps="vdpau"
2698 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2699 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2700 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2701 msmpeg4_crystalhd_decoder_select="crystalhd"
2702 vc1_crystalhd_decoder_select="crystalhd"
2703 vc1_cuvid_hwaccel_deps="cuda cuvid"
2704 vc1_cuvid_hwaccel_select="vc1_cuvid_decoder"
2705 vc1_d3d11va_hwaccel_deps="d3d11va"
2706 vc1_d3d11va_hwaccel_select="vc1_decoder"
2707 vc1_dxva2_hwaccel_deps="dxva2"
2708 vc1_dxva2_hwaccel_select="vc1_decoder"
2709 vc1_mmal_decoder_deps="mmal"
2710 vc1_mmal_decoder_select="mmal"
2711 vc1_mmal_hwaccel_deps="mmal"
2712 vc1_qsv_hwaccel_deps="libmfx"
2713 vc1_qsv_hwaccel_select="qsvdec_vc1"
2714 vc1_vaapi_hwaccel_deps="vaapi"
2715 vc1_vaapi_hwaccel_select="vc1_decoder"
2716 vc1_vdpau_decoder_deps="vdpau"
2717 vc1_vdpau_decoder_select="vc1_decoder"
2718 vc1_vdpau_hwaccel_deps="vdpau"
2719 vc1_vdpau_hwaccel_select="vc1_decoder"
2720 vp8_cuvid_hwaccel_deps="cuda cuvid"
2721 vp8_cuvid_hwaccel_select="vp8_cuvid_decoder"
2722 vp9_cuvid_hwaccel_deps="cuda cuvid"
2723 vp9_cuvid_hwaccel_select="vp9_cuvid_decoder"
2724 vp8_mediacodec_decoder_deps="mediacodec"
2725 vp8_mediacodec_hwaccel_deps="mediacodec"
2726 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2727 vp9_d3d11va_hwaccel_select="vp9_decoder"
2728 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2729 vp9_dxva2_hwaccel_select="vp9_decoder"
2730 vp9_mediacodec_decoder_deps="mediacodec"
2731 vp9_mediacodec_hwaccel_deps="mediacodec"
2732 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2733 vp9_vaapi_hwaccel_select="vp9_decoder"
2734 wmv3_crystalhd_decoder_select="crystalhd"
2735 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2736 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2737 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2738 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2739 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2740
2741 # hardware-accelerated codecs
2742 omx_deps="dlopen pthreads"
2743 omx_extralibs='$ldl'
2744 qsvdec_select="qsv"
2745 qsvenc_select="qsv"
2746 vaapi_encode_deps="vaapi"
2747
2748 hwupload_cuda_filter_deps="cuda"
2749 scale_npp_filter_deps="cuda libnpp"
2750
2751 nvenc_deps="cuda"
2752 nvenc_deps_any="dlopen LoadLibrary"
2753 nvenc_encoder_deps="nvenc"
2754 h264_cuvid_decoder_deps="cuda cuvid"
2755 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2756 h264_nvenc_encoder_deps="nvenc"
2757 h264_qsv_decoder_deps="libmfx"
2758 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2759 h264_qsv_encoder_deps="libmfx"
2760 h264_qsv_encoder_select="qsvenc"
2761 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2762 h264_vaapi_encoder_select="vaapi_encode golomb"
2763
2764 hevc_cuvid_decoder_deps="cuda cuvid"
2765 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2766 hevc_nvenc_encoder_deps="nvenc"
2767 hevc_qsv_decoder_deps="libmfx"
2768 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2769 hevc_qsv_encoder_deps="libmfx"
2770 hevc_qsv_encoder_select="qsvenc"
2771 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2772 hevc_vaapi_encoder_select="vaapi_encode golomb"
2773 mjpeg_cuvid_decoder_deps="cuda cuvid"
2774 mpeg1_cuvid_decoder_deps="cuda cuvid"
2775 mpeg2_cuvid_decoder_deps="cuda cuvid"
2776 mpeg2_qsv_decoder_deps="libmfx"
2777 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2778 mpeg2_qsv_encoder_deps="libmfx"
2779 mpeg2_qsv_encoder_select="qsvenc"
2780 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2781 mpeg2_vaapi_encoder_select="vaapi_encode"
2782 mpeg4_cuvid_decoder_deps="cuda cuvid"
2783 nvenc_h264_encoder_deps="nvenc"
2784 nvenc_hevc_encoder_deps="nvenc"
2785
2786 vc1_cuvid_decoder_deps="cuda cuvid"
2787 vp8_cuvid_decoder_deps="cuda cuvid"
2788 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2789 vp8_vaapi_encoder_select="vaapi_encode"
2790 vp9_cuvid_decoder_deps="cuda cuvid"
2791
2792 # parsers
2793 h264_parser_select="golomb h264dsp h264parse"
2794 hevc_parser_select="golomb"
2795 mpegvideo_parser_select="mpegvideo"
2796 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2797 vc1_parser_select="vc1dsp"
2798
2799 # bitstream_filters
2800 mjpeg2jpeg_bsf_select="jpegtables"
2801
2802 # external libraries
2803 aac_at_decoder_deps="audiotoolbox"
2804 ac3_at_decoder_deps="audiotoolbox"
2805 ac3_at_decoder_select="ac3_parser"
2806 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2807 alac_at_decoder_deps="audiotoolbox"
2808 amr_nb_at_decoder_deps="audiotoolbox"
2809 avisynth_deps_any="dlopen LoadLibrary"
2810 avisynth_demuxer_deps="avisynth"
2811 avisynth_demuxer_select="riffdec"
2812 eac3_at_decoder_deps="audiotoolbox"
2813 eac3_at_decoder_select="ac3_parser"
2814 gsm_ms_at_decoder_deps="audiotoolbox"
2815 ilbc_at_decoder_deps="audiotoolbox"
2816 mp1_at_decoder_deps="audiotoolbox"
2817 mp2_at_decoder_deps="audiotoolbox"
2818 mp3_at_decoder_deps="audiotoolbox"
2819 pcm_alaw_at_decoder_deps="audiotoolbox"
2820 pcm_mulaw_at_decoder_deps="audiotoolbox"
2821 qdmc_at_decoder_deps="audiotoolbox"
2822 qdm2_at_decoder_deps="audiotoolbox"
2823 aac_at_encoder_deps="audiotoolbox"
2824 aac_at_encoder_select="audio_frame_queue"
2825 alac_at_encoder_deps="audiotoolbox"
2826 alac_at_encoder_select="audio_frame_queue"
2827 ilbc_at_encoder_deps="audiotoolbox"
2828 ilbc_at_encoder_select="audio_frame_queue"
2829 pcm_alaw_at_encoder_deps="audiotoolbox"
2830 pcm_alaw_at_encoder_select="audio_frame_queue"
2831 pcm_mulaw_at_encoder_deps="audiotoolbox"
2832 pcm_mulaw_at_encoder_select="audio_frame_queue"
2833 chromaprint_muxer_deps="chromaprint"
2834 h264_videotoolbox_encoder_deps="videotoolbox_encoder pthreads"
2835 libcelt_decoder_deps="libcelt"
2836 libfdk_aac_decoder_deps="libfdk_aac"
2837 libfdk_aac_encoder_deps="libfdk_aac"
2838 libfdk_aac_encoder_select="audio_frame_queue"
2839 libgme_demuxer_deps="libgme"
2840 libgsm_decoder_deps="libgsm"
2841 libgsm_encoder_deps="libgsm"
2842 libgsm_ms_decoder_deps="libgsm"
2843 libgsm_ms_encoder_deps="libgsm"
2844 libilbc_decoder_deps="libilbc"
2845 libilbc_encoder_deps="libilbc"
2846 libkvazaar_encoder_deps="libkvazaar"
2847 libmodplug_demuxer_deps="libmodplug"
2848 libmp3lame_encoder_deps="libmp3lame"
2849 libmp3lame_encoder_select="audio_frame_queue"
2850 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2851 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2852 libopencore_amrnb_encoder_select="audio_frame_queue"
2853 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2854 libopenh264_decoder_deps="libopenh264"
2855 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2856 libopenh264_encoder_deps="libopenh264"
2857 libopenjpeg_decoder_deps="libopenjpeg"
2858 libopenjpeg_encoder_deps="libopenjpeg"
2859 libopenmpt_demuxer_deps="libopenmpt"
2860 libopus_decoder_deps="libopus"
2861 libopus_encoder_deps="libopus"
2862 libopus_encoder_select="audio_frame_queue"
2863 libschroedinger_decoder_deps="libschroedinger"
2864 libschroedinger_encoder_deps="libschroedinger"
2865 libshine_encoder_deps="libshine"
2866 libshine_encoder_select="audio_frame_queue"
2867 libspeex_decoder_deps="libspeex"
2868 libspeex_encoder_deps="libspeex"
2869 libspeex_encoder_select="audio_frame_queue"
2870 libtheora_encoder_deps="libtheora"
2871 libtwolame_encoder_deps="libtwolame"
2872 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2873 libvorbis_decoder_deps="libvorbis"
2874 libvorbis_encoder_deps="libvorbis"
2875 libvorbis_encoder_select="audio_frame_queue"
2876 libvpx_vp8_decoder_deps="libvpx"
2877 libvpx_vp8_encoder_deps="libvpx"
2878 libvpx_vp9_decoder_deps="libvpx"
2879 libvpx_vp9_encoder_deps="libvpx"
2880 libwavpack_encoder_deps="libwavpack"
2881 libwebp_encoder_deps="libwebp"
2882 libwebp_anim_encoder_deps="libwebp"
2883 libx262_encoder_deps="libx262"
2884 libx264_encoder_deps="libx264"
2885 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2886 libx264rgb_encoder_select="libx264_encoder"
2887 libx265_encoder_deps="libx265"
2888 libxavs_encoder_deps="libxavs"
2889 libxvid_encoder_deps="libxvid"
2890 libzvbi_teletext_decoder_deps="libzvbi"
2891 videotoolbox_deps="VideoToolbox_VideoToolbox_h"
2892 videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework CoreVideo"
2893 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2894 videotoolbox_encoder_suggest="vda_framework vt_bt2020"
2895 vt_bt2020_deps="kCVImageBufferColorPrimaries_ITU_R_2020"
2896
2897 # demuxers / muxers
2898 ac3_demuxer_select="ac3_parser"
2899 aiff_muxer_select="iso_media"
2900 asf_demuxer_select="riffdec"
2901 asf_o_demuxer_select="riffdec"
2902 asf_muxer_select="riffenc"
2903 asf_stream_muxer_select="asf_muxer"
2904 avi_demuxer_select="iso_media riffdec exif"
2905 avi_muxer_select="riffenc"
2906 caf_demuxer_select="iso_media riffdec"
2907 caf_muxer_select="iso_media"
2908 dash_muxer_select="mp4_muxer"
2909 dirac_demuxer_select="dirac_parser"
2910 dts_demuxer_select="dca_parser"
2911 dtshd_demuxer_select="dca_parser"
2912 dv_demuxer_select="dvprofile"
2913 dv_muxer_select="dvprofile"
2914 dxa_demuxer_select="riffdec"
2915 eac3_demuxer_select="ac3_parser"
2916 f4v_muxer_select="mov_muxer"
2917 fifo_muxer_deps="threads"
2918 flac_demuxer_select="flac_parser"
2919 hds_muxer_select="flv_muxer"
2920 hls_muxer_select="mpegts_muxer"
2921 image2_alias_pix_demuxer_select="image2_demuxer"
2922 image2_brender_pix_demuxer_select="image2_demuxer"
2923 ipod_muxer_select="mov_muxer"
2924 ismv_muxer_select="mov_muxer"
2925 libnut_demuxer_deps="libnut"
2926 libnut_muxer_deps="libnut"
2927 matroska_audio_muxer_select="matroska_muxer"
2928 matroska_demuxer_select="iso_media riffdec"
2929 matroska_demuxer_suggest="bzlib lzo zlib"
2930 matroska_muxer_select="iso_media riffenc"
2931 mmf_muxer_select="riffenc"
2932 mov_demuxer_select="iso_media riffdec"
2933 mov_demuxer_suggest="zlib"
2934 mov_muxer_select="iso_media riffenc rtpenc_chain"
2935 mp3_demuxer_select="mpegaudio_parser"
2936 mp4_muxer_select="mov_muxer"
2937 mpegts_demuxer_select="iso_media"
2938 mpegts_muxer_select="adts_muxer latm_muxer"
2939 mpegtsraw_demuxer_select="mpegts_demuxer"
2940 mxf_d10_muxer_select="mxf_muxer"
2941 mxf_opatom_muxer_select="mxf_muxer"
2942 nut_muxer_select="riffenc"
2943 nuv_demuxer_select="riffdec"
2944 oga_muxer_select="ogg_muxer"
2945 ogg_demuxer_select="dirac_parse"
2946 ogv_muxer_select="ogg_muxer"
2947 opus_muxer_select="ogg_muxer"
2948 psp_muxer_select="mov_muxer"
2949 rtp_demuxer_select="sdp_demuxer"
2950 rtp_muxer_select="golomb"
2951 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2952 rtsp_demuxer_select="http_protocol rtpdec"
2953 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2954 sap_demuxer_select="sdp_demuxer"
2955 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2956 sdp_demuxer_select="rtpdec"
2957 smoothstreaming_muxer_select="ismv_muxer"
2958 spdif_muxer_select="aac_parser"
2959 spx_muxer_select="ogg_muxer"
2960 swf_demuxer_suggest="zlib"
2961 tak_demuxer_select="tak_parser"
2962 tg2_muxer_select="mov_muxer"
2963 tgp_muxer_select="mov_muxer"
2964 vobsub_demuxer_select="mpegps_demuxer"
2965 w64_demuxer_select="wav_demuxer"
2966 w64_muxer_select="wav_muxer"
2967 wav_demuxer_select="riffdec"
2968 wav_muxer_select="riffenc"
2969 webm_muxer_select="iso_media riffenc"
2970 webm_dash_manifest_demuxer_select="matroska_demuxer"
2971 wtv_demuxer_select="mpegts_demuxer riffdec"
2972 wtv_muxer_select="mpegts_muxer riffenc"
2973 xmv_demuxer_select="riffdec"
2974 xwma_demuxer_select="riffdec"
2975
2976 # indevs / outdevs
2977 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2978 alsa_outdev_deps="alsa_asoundlib_h"
2979 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2980 avfoundation_indev_select="avfoundation"
2981 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2982 caca_outdev_deps="libcaca"
2983 decklink_indev_deps="decklink pthreads"
2984 decklink_indev_extralibs="-lstdc++"
2985 decklink_outdev_deps="decklink pthreads"
2986 decklink_outdev_extralibs="-lstdc++"
2987 dshow_indev_deps="IBaseFilter"
2988 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
2989 dv1394_indev_deps="dv1394"
2990 dv1394_indev_select="dv_demuxer"
2991 fbdev_indev_deps="linux_fb_h"
2992 fbdev_outdev_deps="linux_fb_h"
2993 gdigrab_indev_deps="CreateDIBSection"
2994 gdigrab_indev_extralibs="-lgdi32"
2995 gdigrab_indev_select="bmp_decoder"
2996 iec61883_indev_deps="libiec61883"
2997 jack_indev_deps="jack_jack_h"
2998 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2999 lavfi_indev_deps="avfilter"
3000 libcdio_indev_deps="libcdio"
3001 libdc1394_indev_deps="libdc1394"
3002 libv4l2_indev_deps="libv4l2"
3003 openal_indev_deps="openal"
3004 opengl_outdev_deps="opengl"
3005 oss_indev_deps_any="soundcard_h sys_soundcard_h"
3006 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
3007 pulse_indev_deps="libpulse"
3008 pulse_outdev_deps="libpulse"
3009 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
3010 qtkit_indev_select="qtkit"
3011 sdl2_outdev_deps="sdl2"
3012 sndio_indev_deps="sndio_h"
3013 sndio_outdev_deps="sndio_h"
3014 v4l_indev_deps="linux_videodev_h"
3015 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3016 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3017 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
3018 vfwcap_indev_extralibs="-lavicap32"
3019 xcbgrab_indev_deps="libxcb"
3020 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3021 xv_outdev_extralibs="-lXv -lX11 -lXext"
3022
3023 # protocols
3024 async_protocol_deps="threads"
3025 bluray_protocol_deps="libbluray"
3026 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
3027 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3028 ffrtmpcrypt_protocol_select="tcp_protocol"
3029 ffrtmphttp_protocol_deps="!librtmp_protocol"
3030 ffrtmphttp_protocol_select="http_protocol"
3031 ftp_protocol_select="tcp_protocol"
3032 gopher_protocol_select="network"
3033 http_protocol_select="tcp_protocol"
3034 httpproxy_protocol_select="tcp_protocol"
3035 https_protocol_select="tls_protocol"
3036 icecast_protocol_select="http_protocol"
3037 librtmp_protocol_deps="librtmp"
3038 librtmpe_protocol_deps="librtmp"
3039 librtmps_protocol_deps="librtmp"
3040 librtmpt_protocol_deps="librtmp"
3041 librtmpte_protocol_deps="librtmp"
3042 libsmbclient_protocol_deps="libsmbclient gplv3"
3043 libssh_protocol_deps="libssh"
3044 mmsh_protocol_select="http_protocol"
3045 mmst_protocol_select="network"
3046 rtmp_protocol_deps="!librtmp_protocol"
3047 rtmp_protocol_select="tcp_protocol"
3048 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3049 rtmps_protocol_deps="!librtmp_protocol"
3050 rtmps_protocol_select="tls_protocol"
3051 rtmpt_protocol_select="ffrtmphttp_protocol"
3052 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3053 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3054 rtp_protocol_select="udp_protocol"
3055 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3056 sctp_protocol_select="network"
3057 srtp_protocol_select="rtp_protocol srtp"
3058 tcp_protocol_select="network"
3059 tls_gnutls_protocol_deps="gnutls !tls_schannel_protocol !tls_securetransport_protocol"
3060 tls_gnutls_protocol_select="tcp_protocol"
3061 tls_openssl_protocol_deps="openssl !tls_schannel_protocol !tls_securetransport_protocol !tls_gnutls_protocol"
3062 tls_openssl_protocol_select="tcp_protocol"
3063 tls_schannel_protocol_deps="schannel"
3064 tls_schannel_protocol_select="tcp_protocol"
3065 tls_securetransport_protocol_deps="securetransport"
3066 tls_securetransport_protocol_select="tcp_protocol"
3067 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
3068 udp_protocol_select="network"
3069 udplite_protocol_select="network"
3070 unix_protocol_deps="sys_un_h"
3071 unix_protocol_select="network"
3072
3073 # filters
3074 afftfilt_filter_deps="avcodec"
3075 afftfilt_filter_select="fft"
3076 amovie_filter_deps="avcodec avformat"
3077 aresample_filter_deps="swresample"
3078 ass_filter_deps="libass"
3079 atempo_filter_deps="avcodec"
3080 atempo_filter_select="rdft"
3081 azmq_filter_deps="libzmq"
3082 blackframe_filter_deps="gpl"
3083 boxblur_filter_deps="gpl"
3084 bs2b_filter_deps="libbs2b"
3085 colormatrix_filter_deps="gpl"
3086 cover_rect_filter_deps="avcodec avformat gpl"
3087 cropdetect_filter_deps="gpl"
3088 deinterlace_qsv_filter_deps="libmfx"
3089 deinterlace_vaapi_filter_deps="vaapi"
3090 delogo_filter_deps="gpl"
3091 deshake_filter_select="pixelutils"
3092 drawtext_filter_deps="libfreetype"
3093 eq_filter_deps="gpl"
3094 fftfilt_filter_deps="avcodec"
3095 fftfilt_filter_select="rdft"
3096 find_rect_filter_deps="avcodec avformat gpl"
3097 firequalizer_filter_deps="avcodec"
3098 firequalizer_filter_select="rdft"
3099 flite_filter_deps="libflite"
3100 framerate_filter_select="pixelutils"
3101 frei0r_filter_deps="frei0r dlopen"
3102 frei0r_src_filter_deps="frei0r dlopen"
3103 fspp_filter_deps="gpl"
3104 geq_filter_deps="gpl"
3105 histeq_filter_deps="gpl"
3106 hqdn3d_filter_deps="gpl"
3107 interlace_filter_deps="gpl"
3108 kerndeint_filter_deps="gpl"
3109 ladspa_filter_deps="ladspa dlopen"
3110 mcdeint_filter_deps="avcodec gpl"
3111 movie_filter_deps="avcodec avformat"
3112 mpdecimate_filter_deps="gpl"
3113 mpdecimate_filter_select="pixelutils"
3114 mptestsrc_filter_deps="gpl"
3115 negate_filter_deps="lut_filter"
3116 nnedi_filter_deps="gpl"
3117 ocr_filter_deps="libtesseract"
3118 ocv_filter_deps="libopencv"
3119 owdenoise_filter_deps="gpl"
3120 pan_filter_deps="swresample"
3121 perspective_filter_deps="gpl"
3122 phase_filter_deps="gpl"
3123 pp7_filter_deps="gpl"
3124 pp_filter_deps="gpl postproc"
3125 pullup_filter_deps="gpl"
3126 removelogo_filter_deps="avcodec avformat swscale"
3127 repeatfields_filter_deps="gpl"
3128 resample_filter_deps="avresample"
3129 rubberband_filter_deps="librubberband"
3130 sab_filter_deps="gpl swscale"
3131 scale2ref_filter_deps="swscale"
3132 scale_filter_deps="swscale"
3133 scale_qsv_filter_deps="libmfx"
3134 select_filter_select="pixelutils"
3135 showcqt_filter_deps="avcodec avformat swscale"
3136 showcqt_filter_select="fft"
3137 showfreqs_filter_deps="avcodec"
3138 showfreqs_filter_select="fft"
3139 showspectrum_filter_deps="avcodec"
3140 showspectrum_filter_select="fft"
3141 showspectrumpic_filter_deps="avcodec"
3142 showspectrumpic_filter_select="fft"
3143 signature_filter_deps="gpl avcodec avformat"
3144 smartblur_filter_deps="gpl swscale"
3145 sofalizer_filter_deps="netcdf avcodec"
3146 sofalizer_filter_select="fft"
3147 spectrumsynth_filter_deps="avcodec"
3148 spectrumsynth_filter_select="fft"
3149 spp_filter_deps="gpl avcodec"
3150 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3151 stereo3d_filter_deps="gpl"
3152 subtitles_filter_deps="avformat avcodec libass"
3153 super2xsai_filter_deps="gpl"
3154 pixfmts_super2xsai_test_deps="super2xsai_filter"
3155 tinterlace_filter_deps="gpl"
3156 tinterlace_merge_test_deps="tinterlace_filter"
3157 tinterlace_pad_test_deps="tinterlace_filter"
3158 uspp_filter_deps="gpl avcodec"
3159 vaguedenoiser_filter_deps="gpl"
3160 vidstabdetect_filter_deps="libvidstab"
3161 vidstabtransform_filter_deps="libvidstab"
3162 zmq_filter_deps="libzmq"
3163 zoompan_filter_deps="swscale"
3164 zscale_filter_deps="libzimg"
3165 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3166
3167 # examples
3168 avio_dir_cmd_deps="avformat avutil"
3169 avio_reading_deps="avformat avcodec avutil"
3170 decoding_encoding_example_deps="avcodec avformat avutil"
3171 demuxing_decoding_example_deps="avcodec avformat avutil"
3172 extract_mvs_example_deps="avcodec avformat avutil"
3173 filter_audio_example_deps="avfilter avutil"
3174 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3175 filtering_video_example_deps="avfilter avcodec avformat avutil"
3176 http_multiclient_example_deps="avformat avutil fork"
3177 metadata_example_deps="avformat avutil"
3178 muxing_example_deps="avcodec avformat avutil swscale"
3179 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
3180 remuxing_example_deps="avcodec avformat avutil"
3181 resampling_audio_example_deps="avutil swresample"
3182 scaling_video_example_deps="avutil swscale"
3183 transcode_aac_example_deps="avcodec avformat swresample"
3184 transcoding_example_deps="avfilter avcodec avformat avutil"
3185
3186 # libraries, in linking order
3187 avcodec_deps="avutil"
3188 avdevice_deps="avformat avcodec avutil"
3189 avfilter_deps="avutil"
3190 avformat_deps="avcodec avutil"
3191 avresample_deps="avutil"
3192 postproc_deps="avutil gpl"
3193 swresample_deps="avutil"
3194 swscale_deps="avutil"
3195
3196 # programs
3197 ffmpeg_deps="avcodec avfilter avformat swresample"
3198 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3199                null_filter
3200                trim_filter"
3201 ffplay_deps="avcodec avformat swscale swresample sdl2"
3202 ffplay_libs='$sdl2_libs'
3203 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3204 ffprobe_deps="avcodec avformat"
3205 ffserver_deps="avformat fork sarestart"
3206 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3207
3208 # documentation
3209 podpages_deps="perl"
3210 manpages_deps="perl pod2man"
3211 htmlpages_deps="perl"
3212 htmlpages_deps_any="makeinfo_html texi2html"
3213 txtpages_deps="perl makeinfo"
3214 doc_deps_any="manpages htmlpages podpages txtpages"
3215
3216 # default parameters
3217
3218 logfile="config.log"
3219
3220 # installation paths
3221 prefix_default="/usr/local"
3222 bindir_default='${prefix}/bin'
3223 datadir_default='${prefix}/share/ffmpeg'
3224 docdir_default='${prefix}/share/doc/ffmpeg'
3225 incdir_default='${prefix}/include'
3226 libdir_default='${prefix}/lib'
3227 mandir_default='${prefix}/share/man'
3228
3229 # toolchain
3230 ar_default="ar"
3231 cc_default="gcc"
3232 cxx_default="g++"
3233 host_cc_default="gcc"
3234 cp_f="cp -f"
3235 doxygen_default="doxygen"
3236 install="install"
3237 ln_s_default="ln -s -f"
3238 nm_default="nm -g"
3239 objformat="elf"
3240 pkg_config_default=pkg-config
3241 ranlib_default="ranlib"
3242 strip_default="strip"
3243 version_script='--version-script'
3244 yasmexe_default="yasm"
3245 windres_default="windres"
3246
3247 # OS
3248 target_os_default=$(tolower $(uname -s))
3249 host_os=$target_os_default
3250
3251 # machine
3252 if test "$target_os_default" = aix; then
3253     arch_default=$(uname -p)
3254     strip_default="strip -X32_64"
3255 else
3256     arch_default=$(uname -m)
3257 fi
3258 cpu="generic"
3259 intrinsics="none"
3260
3261 # configurable options
3262 enable $PROGRAM_LIST
3263 enable $DOCUMENT_LIST
3264 enable $EXAMPLE_LIST
3265 enable $(filter_out avresample $LIBRARY_LIST)
3266 enable stripping
3267
3268 enable asm
3269 enable debug
3270 enable doc
3271 enable faan faandct faanidct
3272 enable optimizations
3273 enable runtime_cpudetect
3274 enable safe_bitstream_reader
3275 enable static
3276 enable swscale_alpha
3277 enable valgrind_backtrace
3278
3279 sws_max_filter_size_default=256
3280 set_default sws_max_filter_size
3281
3282 # build settings
3283 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3284 LIBPREF="lib"
3285 LIBSUF=".a"
3286 FULLNAME='$(NAME)$(BUILDSUF)'
3287 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3288 SLIBPREF="lib"
3289 SLIBSUF=".so"
3290 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3291 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3292 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3293 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3294 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3295 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3296 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3297
3298 asflags_filter=echo
3299 cflags_filter=echo
3300 ldflags_filter=echo
3301
3302 AS_C='-c'
3303 AS_O='-o $@'
3304 CC_C='-c'
3305 CC_E='-E -o $@'
3306 CC_O='-o $@'
3307 CXX_C='-c'
3308 CXX_O='-o $@'
3309 OBJCC_C='-c'
3310 OBJCC_E='-E -o $@'
3311 OBJCC_O='-o $@'
3312 LD_O='-o $@'
3313 LD_LIB='-l%'
3314 LD_PATH='-L'
3315 HOSTCC_C='-c'
3316 HOSTCC_E='-E -o $@'
3317 HOSTCC_O='-o $@'
3318 HOSTLD_O='-o $@'
3319
3320 host_libs='-lm'
3321 host_cflags_filter=echo
3322 host_ldflags_filter=echo
3323
3324 target_path='$(CURDIR)'
3325
3326 # since the object filename is not given with the -MM flag, the compiler
3327 # is only able to print the basename, and we must add the path ourselves
3328 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3329 DEPFLAGS='-MM'
3330
3331 # find source path
3332 if test -f configure; then
3333     source_path=.
3334 else
3335     source_path=$(cd $(dirname "$0"); pwd)
3336     case "$source_path" in
3337         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3338     esac
3339     test -e "$source_path/config.h" &&
3340         die "Out of tree builds are impossible with config.h in source dir."
3341 fi
3342
3343 for v in "$@"; do
3344     r=${v#*=}
3345     l=${v%"$r"}
3346     r=$(sh_quote "$r")
3347     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3348 done
3349
3350 find_things(){
3351     thing=$1
3352     pattern=$2
3353     file=$source_path/$3
3354     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3355 }
3356
3357 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3358 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3359 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3360 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3361 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3362 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3363 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3364 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3365 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3366
3367 find_things_extern(){
3368     thing=$1
3369     pattern=$2
3370     file=$source_path/$3
3371     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3372 }
3373
3374 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3375 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3376
3377 ALL_COMPONENTS="
3378     $BSF_LIST
3379     $DECODER_LIST
3380     $DEMUXER_LIST
3381     $ENCODER_LIST
3382     $FILTER_LIST
3383     $HWACCEL_LIST
3384     $INDEV_LIST
3385     $MUXER_LIST
3386     $OUTDEV_LIST
3387     $PARSER_LIST
3388     $PROTOCOL_LIST
3389 "
3390
3391 for n in $COMPONENT_LIST; do
3392     v=$(toupper ${n%s})_LIST
3393     eval enable \$$v
3394     eval ${n}_if_any="\$$v"
3395 done
3396
3397 enable $ARCH_EXT_LIST
3398
3399 die_unknown(){
3400     echo "Unknown option \"$1\"."
3401     echo "See $0 --help for available options."
3402     exit 1
3403 }
3404
3405 print_in_columns() {
3406     cols=$(expr $ncols / 24)
3407     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3408 }
3409
3410 show_list() {
3411     suffix=_$1
3412     shift
3413     echo $* | sed s/$suffix//g | print_in_columns
3414     exit 0
3415 }
3416
3417 rand_list(){
3418     IFS=', '
3419     set -- $*
3420     unset IFS
3421     for thing; do
3422         comp=${thing%:*}
3423         prob=${thing#$comp}
3424         prob=${prob#:}
3425         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3426         echo "prob ${prob:-0.5}"
3427         printf '%s\n' $comp
3428     done
3429 }
3430
3431 do_random(){
3432     action=$1
3433     shift
3434     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3435     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3436 }
3437
3438 for opt do
3439     optval="${opt#*=}"
3440     case "$opt" in
3441         --extra-ldflags=*)
3442             add_ldflags $optval
3443         ;;
3444         --extra-ldexeflags=*)
3445             add_ldexeflags $optval
3446         ;;
3447         --extra-ldlibflags=*)
3448             add_ldlibflags $optval
3449         ;;
3450         --extra-libs=*)
3451             add_extralibs $optval
3452         ;;
3453         --disable-devices)
3454             disable $INDEV_LIST $OUTDEV_LIST
3455         ;;
3456         --enable-debug=*)
3457             debuglevel="$optval"
3458         ;;
3459         --disable-programs)
3460             disable $PROGRAM_LIST
3461         ;;
3462         --disable-everything)
3463             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3464         ;;
3465         --disable-all)
3466             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3467             disable $LIBRARY_LIST $PROGRAM_LIST doc
3468             enable avutil
3469         ;;
3470         --enable-random|--disable-random)
3471             action=${opt%%-random}
3472             do_random ${action#--} $COMPONENT_LIST
3473         ;;
3474         --enable-random=*|--disable-random=*)
3475             action=${opt%%-random=*}
3476             do_random ${action#--} $optval
3477         ;;
3478         --enable-*=*|--disable-*=*)
3479             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3480             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3481             eval list=\$$(toupper $thing)_LIST
3482             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3483             list=$(filter "$name" $list)
3484             [ "$list" = "" ] && warn "Option $opt did not match anything"
3485             $action $list
3486         ;;
3487         --enable-?*|--disable-?*)
3488             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3489             if is_in $option $COMPONENT_LIST; then
3490                 test $action = disable && action=unset
3491                 eval $action \$$(toupper ${option%s})_LIST
3492             elif is_in $option $CMDLINE_SELECT; then
3493                 $action $option
3494             else
3495                 die_unknown $opt
3496             fi
3497         ;;
3498         --list-*)
3499             NAME="${opt#--list-}"
3500             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3501             NAME=${NAME%s}
3502             eval show_list $NAME \$$(toupper $NAME)_LIST
3503         ;;
3504         --help|-h) show_help
3505         ;;
3506         --fatal-warnings) enable fatal_warnings
3507         ;;
3508         *)
3509             optname="${opt%%=*}"
3510             optname="${optname#--}"
3511             optname=$(echo "$optname" | sed 's/-/_/g')
3512             if is_in $optname $CMDLINE_SET; then
3513                 eval $optname='$optval'
3514             elif is_in $optname $CMDLINE_APPEND; then
3515                 append $optname "$optval"
3516             else
3517                 die_unknown $opt
3518             fi
3519         ;;
3520     esac
3521 done
3522
3523 for e in $env; do
3524     eval "export $e"
3525 done
3526
3527 # Mark specifically enabled, but normally autodetected libraries as requested.
3528 for lib in $AUTODETECT_LIBS; do
3529     enabled $lib && request $lib
3530 done
3531
3532 # Enable platform codecs by default.
3533 enable_weak audiotoolbox
3534
3535 # Enable hwaccels by default.
3536 enable_weak d3d11va dxva2 vaapi vda vdpau videotoolbox_hwaccel xvmc
3537 enable_weak xlib
3538
3539 enable_weak cuda cuvid nvenc vda_framework videotoolbox videotoolbox_encoder
3540
3541 disabled logging && logfile=/dev/null
3542
3543 # Disable all the library-specific components if the library itself
3544 # is disabled, see AVCODEC_LIST and following _LIST variables.
3545
3546 disable_components(){
3547     disabled ${1} && disable $(
3548         eval components="\$$(toupper ${1})_COMPONENTS"
3549         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3550     )
3551 }
3552
3553 map 'disable_components $v' $LIBRARY_LIST
3554
3555 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3556 set >> $logfile
3557
3558 test -n "$valgrind" && toolchain="valgrind-memcheck"
3559
3560 case "$toolchain" in
3561     *-asan)
3562         cc_default="${toolchain%-asan}"
3563         add_cflags  -fsanitize=address
3564         add_ldflags -fsanitize=address
3565     ;;
3566     *-msan)
3567         cc_default="${toolchain%-msan}"
3568         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3569         add_ldflags -fsanitize=memory
3570     ;;
3571     *-tsan)
3572         cc_default="${toolchain%-tsan}"
3573         add_cflags  -fsanitize=thread -fPIE
3574         add_ldflags -fsanitize=thread -pie
3575         case "$toolchain" in
3576             gcc-tsan)
3577                 add_cflags  -fPIC
3578                 add_ldflags -fPIC
3579                 ;;
3580         esac
3581     ;;
3582     *-usan)
3583         cc_default="${toolchain%-usan}"
3584         add_cflags  -fsanitize=undefined
3585         add_ldflags -fsanitize=undefined
3586     ;;
3587     valgrind-*)
3588         target_exec_default="valgrind"
3589         case "$toolchain" in
3590             valgrind-massif)
3591                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3592                 ;;
3593             valgrind-memcheck)
3594                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3595                 ;;
3596         esac
3597     ;;
3598     msvc)
3599         # Check whether the current MSVC version needs the C99 converter.
3600         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3601         # support enough of C99 to build ffmpeg. Default to the new
3602         # behaviour if the regexp was unable to match anything, since this
3603         # successfully parses the version number of existing supported
3604         # versions that require the converter (MSVC 2010 and 2012).
3605         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3606         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3607             cc_default="cl"
3608         else
3609             cc_default="c99wrap cl"
3610         fi
3611         ld_default="$source_path/compat/windows/mslink"
3612         nm_default="dumpbin -symbols"
3613         ar_default="lib"
3614         case "$arch" in
3615         arm*)
3616             as_default="armasm"
3617             ;;
3618         esac
3619         target_os_default="win32"
3620         # Use a relative path for TMPDIR. This makes sure all the
3621         # ffconf temp files are written with a relative path, avoiding
3622         # issues with msys/win32 path conversion for MSVC parameters
3623         # such as -Fo<file> or -out:<file>.
3624         TMPDIR=.
3625     ;;
3626     icl)
3627         cc_default="icl"
3628         ld_default="xilink"
3629         nm_default="dumpbin -symbols"
3630         ar_default="xilib"
3631         target_os_default="win32"
3632         TMPDIR=.
3633     ;;
3634     gcov)
3635         add_cflags  -fprofile-arcs -ftest-coverage
3636         add_ldflags -fprofile-arcs -ftest-coverage
3637     ;;
3638     llvm-cov)
3639         add_cflags -fprofile-arcs -ftest-coverage
3640         add_ldflags --coverage
3641     ;;
3642     hardened)
3643         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3644         add_cflags   -fno-strict-overflow -fstack-protector-all
3645         add_ldflags  -Wl,-z,relro -Wl,-z,now
3646         add_cflags   -fPIE
3647         add_ldexeflags -fPIE -pie
3648     ;;
3649     ?*)
3650         die "Unknown toolchain $toolchain"
3651     ;;
3652 esac
3653
3654 test -n "$cross_prefix" && enable cross_compile
3655
3656 if enabled cross_compile; then
3657     test -n "$arch" && test -n "$target_os" ||
3658         die "Must specify target arch and OS when cross-compiling"
3659 fi
3660
3661 ar_default="${cross_prefix}${ar_default}"
3662 cc_default="${cross_prefix}${cc_default}"
3663 cxx_default="${cross_prefix}${cxx_default}"
3664 nm_default="${cross_prefix}${nm_default}"
3665 pkg_config_default="${cross_prefix}${pkg_config_default}"
3666 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3667     ranlib_default="${cross_prefix}${ranlib_default} -D"
3668 else
3669     ranlib_default="${cross_prefix}${ranlib_default}"
3670 fi
3671 strip_default="${cross_prefix}${strip_default}"
3672 windres_default="${cross_prefix}${windres_default}"
3673
3674 sysinclude_default="${sysroot}/usr/include"
3675
3676 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3677     target_exec target_os yasmexe
3678 enabled cross_compile || host_cc_default=$cc
3679 set_default host_cc
3680
3681 pkg_config_fail_message=""
3682 if ! $pkg_config --version >/dev/null 2>&1; then
3683     warn "$pkg_config not found, library detection may fail."
3684     pkg_config=false
3685 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3686     pkg_config_fail_message="
3687 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3688 fi
3689
3690 if test $doxygen != $doxygen_default && \
3691   ! $doxygen --version >/dev/null 2>&1; then
3692     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3693 fi
3694
3695 exesuf() {
3696     case $1 in
3697         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3698     esac
3699 }
3700
3701 EXESUF=$(exesuf $target_os)
3702 HOSTEXESUF=$(exesuf $host_os)
3703
3704 # set temporary file name
3705 : ${TMPDIR:=$TEMPDIR}
3706 : ${TMPDIR:=$TMP}
3707 : ${TMPDIR:=/tmp}
3708
3709 if [ -n "$tempprefix" ] ; then
3710     mktemp(){
3711         echo $tempprefix.${HOSTNAME}.${UID}
3712     }
3713 elif ! check_cmd mktemp -u XXXXXX; then
3714     # simple replacement for missing mktemp
3715     # NOT SAFE FOR GENERAL USE
3716     mktemp(){
3717         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3718     }
3719 fi
3720
3721 tmpfile(){
3722     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3723         (set -C; exec > $tmp) 2>/dev/null ||
3724         die "Unable to create temporary file in $TMPDIR."
3725     append TMPFILES $tmp
3726     eval $1=$tmp
3727 }
3728
3729 trap 'rm -f -- $TMPFILES' EXIT
3730
3731 tmpfile TMPASM .asm
3732 tmpfile TMPC   .c
3733 tmpfile TMPCPP .cpp
3734 tmpfile TMPE   $EXESUF
3735 tmpfile TMPH   .h
3736 tmpfile TMPM   .m
3737 tmpfile TMPO   .o
3738 tmpfile TMPS   .S
3739 tmpfile TMPSH  .sh
3740 tmpfile TMPV   .ver
3741
3742 unset -f mktemp
3743
3744 chmod +x $TMPE
3745
3746 # make sure we can execute files in $TMPDIR
3747 cat > $TMPSH 2>> $logfile <<EOF
3748 #! /bin/sh
3749 EOF
3750 chmod +x $TMPSH >> $logfile 2>&1
3751 if ! $TMPSH >> $logfile 2>&1; then
3752     cat <<EOF
3753 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3754 variable to another directory and make sure that it is not mounted noexec.
3755 EOF
3756     die "Sanity test failed."
3757 fi
3758
3759 armasm_flags(){
3760     for flag; do
3761         case $flag in
3762             # Filter out MSVC cl.exe options from cflags that shouldn't
3763             # be passed to gas-preprocessor
3764             -M[TD]*)                                            ;;
3765             *)                  echo $flag                      ;;
3766         esac
3767    done
3768 }
3769
3770 ccc_flags(){
3771     for flag; do
3772         case $flag in
3773             -std=c99)           echo -c99                       ;;
3774             -mcpu=*)            echo -arch ${flag#*=}           ;;
3775             -mieee)             echo -ieee                      ;;
3776             -O*|-fast)          echo $flag                      ;;
3777             -fno-math-errno)    echo -assume nomath_errno       ;;
3778             -g)                 echo -g3                        ;;
3779             -Wall)              echo -msg_enable level2         ;;
3780             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3781             -Wl,*)              echo $flag                      ;;
3782             -f*|-W*)                                            ;;
3783             *)                  echo $flag                      ;;
3784         esac
3785    done
3786 }
3787
3788 cparser_flags(){
3789     for flag; do
3790         case $flag in
3791             -Wno-switch)             echo -Wno-switch-enum ;;
3792             -Wno-format-zero-length) ;;
3793             -Wdisabled-optimization) ;;
3794             -Wno-pointer-sign)       echo -Wno-other ;;
3795             *)                       echo $flag ;;
3796         esac
3797     done
3798 }
3799
3800 msvc_common_flags(){
3801     for flag; do
3802         case $flag in
3803             # In addition to specifying certain flags under the compiler
3804             # specific filters, they must be specified here as well or else the
3805             # generic catch all at the bottom will print the original flag.
3806             -Wall)                ;;
3807             -std=c99)             ;;
3808             # Common flags
3809             -fomit-frame-pointer) ;;
3810             -g)                   echo -Z7 ;;
3811             -fno-math-errno)      ;;
3812             -fno-common)          ;;
3813             -fno-signed-zeros)    ;;
3814             -fPIC)                ;;
3815             -mthumb)              ;;
3816             -march=*)             ;;
3817             -lz)                  echo zlib.lib ;;
3818             -lavifil32)           echo vfw32.lib ;;
3819             -lavicap32)           echo vfw32.lib user32.lib ;;
3820             -lx264)               echo libx264.lib ;;
3821             -l*)                  echo ${flag#-l}.lib ;;
3822             -LARGEADDRESSAWARE)   echo $flag ;;
3823             -L*)                  echo -libpath:${flag#-L} ;;
3824             *)                    echo $flag ;;
3825         esac
3826     done
3827 }
3828
3829 msvc_flags(){
3830     msvc_common_flags "$@"
3831     for flag; do
3832         case $flag in
3833             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3834                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3835                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3836                                        -wd4307 \
3837                                        -wd4273 -wd4554 -wd4701 ;;
3838         esac
3839     done
3840 }
3841
3842 icl_flags(){
3843     msvc_common_flags "$@"
3844     for flag; do
3845         case $flag in
3846             # Despite what Intel's documentation says -Wall, which is supported
3847             # on Windows, does enable remarks so disable them here.
3848             -Wall)                echo $flag -Qdiag-disable:remark ;;
3849             -std=c99)             echo -Qstd=c99 ;;
3850             -flto)                echo -ipo ;;
3851         esac
3852     done
3853 }
3854
3855 icc_flags(){
3856     for flag; do
3857         case $flag in
3858             -flto)                echo -ipo ;;
3859             *)                    echo $flag ;;
3860         esac
3861     done
3862 }
3863
3864 pgi_flags(){
3865     for flag; do
3866         case $flag in
3867             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3868             -fomit-frame-pointer) echo -Mnoframe ;;
3869             -g)                   echo -gopt ;;
3870             *)                    echo $flag ;;
3871         esac
3872     done
3873 }
3874
3875 suncc_flags(){
3876     for flag; do
3877         case $flag in
3878             -march=*|-mcpu=*)
3879                 case "${flag#*=}" in
3880                     native)                   echo -xtarget=native       ;;
3881                     v9|niagara)               echo -xarch=sparc          ;;
3882                     ultrasparc)               echo -xarch=sparcvis       ;;
3883                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3884                     i586|pentium)             echo -xchip=pentium        ;;
3885                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3886                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3887                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3888                     pentium4*)          echo -xtarget=pentium4           ;;
3889                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3890                     *-sse3)             echo -xarch=sse3                 ;;
3891                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3892                     bonnell)                   echo -xarch=ssse3         ;;
3893                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3894                     westmere)                  echo -xtarget=westmere    ;;
3895                     silvermont)                echo -xarch=sse4_2        ;;
3896                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3897                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
3898                                                echo -xarch=avx           ;;
3899                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3900                     btver1)                    echo -xarch=amdsse4a      ;;
3901                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
3902                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3903                     k8|opteron|athlon64|athlon-fx)
3904                                                echo -xarch=sse2a         ;;
3905                     athlon*)                   echo -xarch=pentium_proa  ;;
3906                 esac
3907                 ;;
3908             -std=c99)             echo -xc99              ;;
3909             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3910             -fPIC)                echo -KPIC -xcode=pic32 ;;
3911             -W*,*)                echo $flag              ;;
3912             -f*-*|-W*|-mimpure-text)                      ;;
3913             -shared)              echo -G                 ;;
3914             *)                    echo $flag              ;;
3915         esac
3916     done
3917 }
3918
3919 tms470_flags(){
3920     for flag; do
3921         case $flag in
3922             -march=*|-mcpu=*)
3923                 case "${flag#*=}" in
3924                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3925                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3926                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3927                     armv6*|arm11*)          echo -mv=6   ;;
3928                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3929                                             echo -mv=5e  ;;
3930                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3931                 esac
3932                 ;;
3933             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3934             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3935             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3936             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3937             -msoft-float)   echo --float_support=vfplib       ;;
3938             -O[0-3]|-mf=*)  echo $flag                        ;;
3939             -g)             echo -g -mn                       ;;
3940             -pds=*)         echo $flag                        ;;
3941             -D*|-I*)        echo $flag                        ;;
3942             --gcc|--abi=*)  echo $flag                        ;;
3943             -me)            echo $flag                        ;;
3944         esac
3945     done
3946 }
3947
3948 probe_cc(){
3949     pfx=$1
3950     _cc=$2
3951     first=$3
3952
3953     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3954     unset _ld_o _ldflags _ld_lib _ld_path
3955     unset _depflags _DEPCMD _DEPFLAGS
3956     _flags_filter=echo
3957
3958     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3959         true # no-op to avoid reading stdin in following checks
3960     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3961         _type=llvm_gcc
3962         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3963         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3964         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3965         _cflags_speed='-O3'
3966         _cflags_size='-Os'
3967     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3968         _type=gcc
3969         gcc_version=$($_cc --version | head -n1)
3970         gcc_basever=$($_cc -dumpversion)
3971         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3972         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3973         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3974         case $gcc_basever in
3975             2) ;;
3976             2.*) ;;
3977             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
3978         esac
3979         if [ "$first" = true ]; then
3980             case $gcc_basever in
3981                 4.2*)
3982                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
3983             esac
3984         fi
3985         _cflags_speed='-O3'
3986         _cflags_size='-Os'
3987     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3988         _type=icc
3989         _ident=$($_cc --version | head -n1)
3990         _depflags='-MMD'
3991         _cflags_speed='-O3'
3992         _cflags_size='-Os'
3993         _cflags_noopt='-O1'
3994         _flags_filter=icc_flags
3995     elif $_cc -v 2>&1 | grep -q xlc; then
3996         _type=xlc
3997         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3998         _cflags_speed='-O5'
3999         _cflags_size='-O5 -qcompact'
4000     elif $_cc -V 2>/dev/null | grep -q Compaq; then
4001         _type=ccc
4002         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
4003         _DEPFLAGS='-M'
4004         _cflags_speed='-fast'
4005         _cflags_size='-O1'
4006         _flags_filter=ccc_flags
4007     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4008         test -d "$sysroot" || die "No valid sysroot specified."
4009         _type=armcc
4010         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4011         armcc_conf="$PWD/armcc.conf"
4012         $_cc --arm_linux_configure                 \
4013              --arm_linux_config_file="$armcc_conf" \
4014              --configure_sysroot="$sysroot"        \
4015              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4016              die "Error creating armcc configuration file."
4017         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4018         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4019         as_default="${cross_prefix}gcc"
4020         _depflags='-MMD'
4021         _cflags_speed='-O3'
4022         _cflags_size='-Os'
4023     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
4024         _type=tms470
4025         _ident=$($_cc -version | head -n1 | tr -s ' ')
4026         _flags='--gcc --abi=eabi -me'
4027         _cc_e='-ppl -fe=$@'
4028         _cc_o='-fe=$@'
4029         _depflags='-ppa -ppd=$(@:.o=.d)'
4030         _cflags_speed='-O3 -mf=5'
4031         _cflags_size='-O3 -mf=2'
4032         _flags_filter=tms470_flags
4033     elif $_cc -v 2>&1 | grep -q clang; then
4034         _type=clang
4035         _ident=$($_cc --version 2>/dev/null | head -n1)
4036         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4037         _cflags_speed='-O3'
4038         _cflags_size='-Oz'
4039     elif $_cc -V 2>&1 | grep -q Sun; then
4040         _type=suncc
4041         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4042         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4043         _DEPFLAGS='-xM1 -xc99'
4044         _ldflags='-std=c99'
4045         _cflags_speed='-O5'
4046         _cflags_size='-O5 -xspace'
4047         _flags_filter=suncc_flags
4048     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4049         _type=pathscale
4050         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4051         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4052         _cflags_speed='-O2'
4053         _cflags_size='-Os'
4054         _flags_filter='filter_out -Wdisabled-optimization'
4055     elif $_cc -v 2>&1 | grep -q Open64; then
4056         _type=open64
4057         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4058         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4059         _cflags_speed='-O2'
4060         _cflags_size='-Os'
4061         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4062     elif $_cc -V 2>&1 | grep -q Portland; then
4063         _type=pgi
4064         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
4065         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
4066         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
4067         _cflags_size="-O2 -Munroll=c:1 $opt_common"
4068         _cflags_noopt="-O"
4069         _flags_filter=pgi_flags
4070     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4071         _type=armasm
4072         _ident=$($_cc | head -n1)
4073         # 4509: "This form of conditional instruction is deprecated"
4074         _flags="-nologo -ignore 4509"
4075         _flags_filter=armasm_flags
4076     elif $_cc 2>&1 | grep -q Intel; then
4077         _type=icl
4078         _ident=$($_cc 2>&1 | head -n1)
4079         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4080         # Not only is O3 broken on 13.x+ but it is slower on all previous
4081         # versions (tested) as well.
4082         _cflags_speed="-O2"
4083         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4084         if $_cc 2>&1 | grep -q Linker; then
4085             _ld_o='-out:$@'
4086         else
4087             _ld_o='-Fe$@'
4088         fi
4089         _cc_o='-Fo$@'
4090         _cc_e='-P'
4091         _flags_filter=icl_flags
4092         _ld_lib='lib%.a'
4093         _ld_path='-libpath:'
4094         # -Qdiag-error to make icl error when seeing certain unknown arguments
4095         _flags='-nologo -Qdiag-error:4044,10157'
4096         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4097         # with MSVC which enables it by default.
4098         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4099         disable stripping
4100     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4101         # lld can emulate multiple different linkers; in ms link.exe mode,
4102         # the -? parameter gives the help output which contains an identifyable
4103         # string, while it gives an error in other modes.
4104         _type=lld-link
4105         # The link.exe mode doesn't have a switch for getting the version,
4106         # but we can force it back to gnu mode and get the version from there.
4107         _ident=$($_cc -flavor gnu --version)
4108         _ld_o='-out:$@'
4109         _flags_filter=msvc_flags
4110         _ld_lib='lib%.a'
4111         _ld_path='-libpath:'
4112     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4113         _type=msvc
4114         _ident=$($_cc 2>&1 | head -n1)
4115         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4116         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4117         _cflags_speed="-O2"
4118         _cflags_size="-O1"
4119         if $_cc -nologo- 2>&1 | grep -q Linker; then
4120             _ld_o='-out:$@'
4121         else
4122             _ld_o='-Fe$@'
4123         fi
4124         _cc_o='-Fo$@'
4125         _cc_e='-P -Fi$@'
4126         _flags_filter=msvc_flags
4127         _ld_lib='lib%.a'
4128         _ld_path='-libpath:'
4129         _flags='-nologo'
4130         disable stripping
4131     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4132         _type=cparser
4133         _ident=$($_cc --version | head -n1)
4134         _depflags='-MMD'
4135         _cflags_speed='-O4'
4136         _cflags_size='-O2'
4137         _flags_filter=cparser_flags
4138     fi
4139
4140     eval ${pfx}_type=\$_type
4141     eval ${pfx}_ident=\$_ident
4142 }
4143
4144 set_ccvars(){
4145     eval ${1}_C=\${_cc_c-\${${1}_C}}
4146     eval ${1}_E=\${_cc_e-\${${1}_E}}
4147     eval ${1}_O=\${_cc_o-\${${1}_O}}
4148
4149     if [ -n "$_depflags" ]; then
4150         eval ${1}_DEPFLAGS=\$_depflags
4151     else
4152         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4153         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4154         eval DEP${1}FLAGS=\$_flags
4155     fi
4156 }
4157
4158 probe_cc cc "$cc" "true"
4159 cflags_filter=$_flags_filter
4160 cflags_speed=$_cflags_speed
4161 cflags_size=$_cflags_size
4162 cflags_noopt=$_cflags_noopt
4163 add_cflags $_flags $_cflags
4164 cc_ldflags=$_ldflags
4165 set_ccvars CC
4166
4167 probe_cc hostcc "$host_cc"
4168 host_cflags_filter=$_flags_filter
4169 add_host_cflags  $_flags $_cflags
4170 set_ccvars HOSTCC
4171
4172 test -n "$cc_type" && enable $cc_type ||
4173     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4174
4175 : ${as_default:=$cc}
4176 : ${objcc_default:=$cc}
4177 : ${dep_cc_default:=$cc}
4178 : ${ld_default:=$cc}
4179 : ${host_ld_default:=$host_cc}
4180 set_default ar as objcc dep_cc ld ln_s host_ld windres
4181
4182 probe_cc as "$as"
4183 asflags_filter=$_flags_filter
4184 add_asflags $_flags $_cflags
4185 set_ccvars AS
4186
4187 probe_cc objcc "$objcc"
4188 objcflags_filter=$_flags_filter
4189 add_objcflags $_flags $_cflags
4190 set_ccvars OBJC
4191
4192 probe_cc ld "$ld"
4193 ldflags_filter=$_flags_filter
4194 add_ldflags $_flags $_ldflags
4195 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4196 LD_O=${_ld_o-$LD_O}
4197 LD_LIB=${_ld_lib-$LD_LIB}
4198 LD_PATH=${_ld_path-$LD_PATH}
4199
4200 probe_cc hostld "$host_ld"
4201 host_ldflags_filter=$_flags_filter
4202 add_host_ldflags $_flags $_ldflags
4203 HOSTLD_O=${_ld_o-$HOSTLD_O}
4204
4205 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4206     probe_cc depcc "$dep_cc"
4207     CCDEP=${_DEPCMD:-$DEPCMD}
4208     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4209     DEPCCFLAGS=$_flags
4210 fi
4211
4212 if $ar 2>&1 | grep -q Microsoft; then
4213     arflags="-nologo"
4214     ar_o='-out:$@'
4215 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
4216     arflags="rq"
4217     ar_o='$@'
4218 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
4219     arflags='-Xany -r -c'
4220     ar_o='$@'
4221 elif $ar 2>&1 | grep -q "\[D\] "; then
4222     arflags="rcD"
4223     ar_o='$@'
4224 else
4225     arflags="rc"
4226     ar_o='$@'
4227 fi
4228
4229 add_cflags $extra_cflags
4230 add_cxxflags $extra_cxxflags
4231 add_objcflags $extra_objcflags
4232 add_asflags $extra_cflags
4233
4234 if test -n "$sysroot"; then
4235     case "$cc_type" in
4236         gcc|llvm_gcc|clang)
4237             add_cppflags --sysroot="$sysroot"
4238             add_ldflags --sysroot="$sysroot"
4239 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
4240             add_cppflags -isysroot "$sysroot"
4241             add_ldflags -isysroot "$sysroot"
4242         ;;
4243         tms470)
4244             add_cppflags -I"$sysinclude"
4245             add_ldflags  --sysroot="$sysroot"
4246         ;;
4247     esac
4248 fi
4249
4250 if test "$cpu" = host; then
4251     enabled cross_compile &&
4252         die "--cpu=host makes no sense when cross-compiling."
4253
4254     case "$cc_type" in
4255         gcc|llvm_gcc)
4256             check_native(){
4257                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4258                 sed -n "/cc1.*$1=/{
4259                             s/.*$1=\\([^ ]*\\).*/\\1/
4260                             p
4261                             q
4262                         }" $TMPE
4263             }
4264             cpu=$(check_native -march || check_native -mcpu)
4265         ;;
4266         clang)
4267             check_native(){
4268                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4269                 sed -n "/cc1.*-target-cpu /{
4270                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4271                             p
4272                             q
4273                         }" $TMPE
4274             }
4275             cpu=$(check_native -march)
4276         ;;
4277     esac
4278
4279     test "${cpu:-host}" = host &&
4280         die "--cpu=host not supported with compiler $cc"
4281 fi
4282
4283 # Deal with common $arch aliases
4284 case "$arch" in
4285     aarch64|arm64)
4286         arch="aarch64"
4287     ;;
4288     arm*|iPad*|iPhone*)
4289         arch="arm"
4290     ;;
4291     mips*|IP*)
4292         case "$arch" in
4293         *el)
4294             add_cppflags -EL
4295             add_ldflags -EL
4296         ;;
4297         *eb)
4298             add_cppflags -EB
4299             add_ldflags -EB
4300         ;;
4301         esac
4302         arch="mips"
4303     ;;
4304     parisc*|hppa*)
4305         arch="parisc"
4306     ;;
4307     "Power Macintosh"|ppc*|powerpc*)
4308         arch="ppc"
4309     ;;
4310     s390|s390x)
4311         arch="s390"
4312     ;;
4313     sh4|sh)
4314         arch="sh4"
4315     ;;
4316     sun4*|sparc*)
4317         arch="sparc"
4318     ;;
4319     tilegx|tile-gx)
4320         arch="tilegx"
4321     ;;
4322     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4323         arch="x86"
4324     ;;
4325 esac
4326
4327 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4328 enable $arch
4329
4330 # Add processor-specific flags
4331 if enabled aarch64; then
4332
4333     case $cpu in
4334         armv*)
4335             cpuflags="-march=$cpu"
4336         ;;
4337         *)
4338             cpuflags="-mcpu=$cpu"
4339         ;;
4340     esac
4341
4342 elif enabled alpha; then
4343
4344     cpuflags="-mcpu=$cpu"
4345
4346 elif enabled arm; then
4347
4348     check_arm_arch() {
4349         check_cpp_condition stddef.h \
4350             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4351             $cpuflags
4352     }
4353
4354     probe_arm_arch() {
4355         if   check_arm_arch 4;        then echo armv4
4356         elif check_arm_arch 4T;       then echo armv4t
4357         elif check_arm_arch 5;        then echo armv5
4358         elif check_arm_arch 5E;       then echo armv5e
4359         elif check_arm_arch 5T;       then echo armv5t
4360         elif check_arm_arch 5TE;      then echo armv5te
4361         elif check_arm_arch 5TEJ;     then echo armv5te
4362         elif check_arm_arch 6;        then echo armv6
4363         elif check_arm_arch 6J;       then echo armv6j
4364         elif check_arm_arch 6K;       then echo armv6k
4365         elif check_arm_arch 6Z;       then echo armv6z
4366         elif check_arm_arch 6ZK;      then echo armv6zk
4367         elif check_arm_arch 6T2;      then echo armv6t2
4368         elif check_arm_arch 7;        then echo armv7
4369         elif check_arm_arch 7A  7_A;  then echo armv7-a
4370         elif check_arm_arch 7S;       then echo armv7-a
4371         elif check_arm_arch 7R  7_R;  then echo armv7-r
4372         elif check_arm_arch 7M  7_M;  then echo armv7-m
4373         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4374         elif check_arm_arch 8A  8_A;  then echo armv8-a
4375         fi
4376     }
4377
4378     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4379
4380     case $cpu in
4381         armv*)
4382             cpuflags="-march=$cpu"
4383             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4384         ;;
4385         *)
4386             cpuflags="-mcpu=$cpu"
4387             case $cpu in
4388                 cortex-a*)                               subarch=armv7a  ;;
4389                 cortex-r*)                               subarch=armv7r  ;;
4390                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4391                 arm11*)                                  subarch=armv6   ;;
4392                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4393                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4394                 *)                             subarch=$(probe_arm_arch) ;;
4395             esac
4396         ;;
4397     esac
4398
4399     case "$subarch" in
4400         armv5t*)    enable fast_clz                ;;
4401         armv[6-8]*)
4402             enable fast_clz
4403             disabled fast_unaligned || enable fast_unaligned
4404             ;;
4405     esac
4406
4407 elif enabled avr32; then
4408
4409     case $cpu in
4410         ap7[02]0[0-2])
4411             subarch="avr32_ap"
4412             cpuflags="-mpart=$cpu"
4413         ;;
4414         ap)
4415             subarch="avr32_ap"
4416             cpuflags="-march=$cpu"
4417         ;;
4418         uc3[ab]*)
4419             subarch="avr32_uc"
4420             cpuflags="-mcpu=$cpu"
4421         ;;
4422         uc)
4423             subarch="avr32_uc"
4424             cpuflags="-march=$cpu"
4425         ;;
4426     esac
4427
4428 elif enabled bfin; then
4429
4430     cpuflags="-mcpu=$cpu"
4431
4432 elif enabled mips; then
4433
4434     cpuflags="-march=$cpu"
4435
4436     if [ "$cpu" != "generic" ]; then
4437         disable mips32r2
4438         disable mips32r5
4439         disable mips64r2
4440         disable mips32r6
4441         disable mips64r6
4442         disable loongson2
4443         disable loongson3
4444
4445         case $cpu in
4446             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4447                 enable mips32r2
4448                 disable msa
4449             ;;
4450             p5600|i6400|p6600)
4451                 disable mipsdsp
4452                 disable mipsdspr2
4453             ;;
4454             loongson*)
4455                 enable loongson2
4456                 enable loongson3
4457                 enable local_aligned_8 local_aligned_16 local_aligned_32
4458                 enable simd_align_16
4459                 enable fast_64bit
4460                 enable fast_clz
4461                 enable fast_cmov
4462                 enable fast_unaligned
4463                 disable aligned_stack
4464                 disable mipsfpu
4465                 disable mipsdsp
4466                 disable mipsdspr2
4467                 case $cpu in
4468                     loongson3*)
4469                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4470                     ;;
4471                     loongson2e)
4472                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4473                     ;;
4474                     loongson2f)
4475                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4476                     ;;
4477                 esac
4478             ;;
4479             *)
4480                 # Unknown CPU. Disable everything.
4481                 warn "unknown CPU. Disabling all MIPS optimizations."
4482                 disable mipsfpu
4483                 disable mipsdsp
4484                 disable mipsdspr2
4485                 disable msa
4486                 disable mmi
4487             ;;
4488         esac
4489
4490         case $cpu in
4491             24kc)
4492                 disable mipsfpu
4493                 disable mipsdsp
4494                 disable mipsdspr2
4495             ;;
4496             24kf*)
4497                 disable mipsdsp
4498                 disable mipsdspr2
4499             ;;
4500             24kec|34kc|1004kc)
4501                 disable mipsfpu
4502                 disable mipsdspr2
4503             ;;
4504             24kef*|34kf*|1004kf*)
4505                 disable mipsdspr2
4506             ;;
4507             74kc)
4508                 disable mipsfpu
4509             ;;
4510             p5600)
4511                 enable mips32r5
4512                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4513             ;;
4514             i6400)
4515                 enable mips64r6
4516                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4517             ;;
4518             p6600)
4519                 enable mips64r6
4520                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4521             ;;
4522         esac
4523     else
4524         # We do not disable anything. Is up to the user to disable the unwanted features.
4525         warn 'generic cpu selected'
4526     fi
4527
4528 elif enabled ppc; then
4529
4530     disable ldbrx
4531
4532     case $(tolower $cpu) in
4533         601|ppc601|powerpc601)
4534             cpuflags="-mcpu=601"
4535             disable altivec
4536         ;;
4537         603*|ppc603*|powerpc603*)
4538             cpuflags="-mcpu=603"
4539             disable altivec
4540         ;;
4541         604*|ppc604*|powerpc604*)
4542             cpuflags="-mcpu=604"
4543             disable altivec
4544         ;;
4545         g3|75*|ppc75*|powerpc75*)
4546             cpuflags="-mcpu=750"
4547             disable altivec
4548         ;;
4549         g4|745*|ppc745*|powerpc745*)
4550             cpuflags="-mcpu=7450"
4551             disable vsx
4552         ;;
4553         74*|ppc74*|powerpc74*)
4554             cpuflags="-mcpu=7400"
4555             disable vsx
4556         ;;
4557         g5|970|ppc970|powerpc970)
4558             cpuflags="-mcpu=970"
4559             disable vsx
4560         ;;
4561         power[3-6]*)
4562             cpuflags="-mcpu=$cpu"
4563             disable vsx
4564         ;;
4565         power[7-8]*)
4566             cpuflags="-mcpu=$cpu"
4567         ;;
4568         cell)
4569             cpuflags="-mcpu=cell"
4570             enable ldbrx
4571             disable vsx
4572         ;;
4573         e500mc)
4574             cpuflags="-mcpu=e500mc"
4575             disable altivec
4576         ;;
4577         e500v2)
4578             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4579             disable altivec
4580             disable dcbzl
4581         ;;
4582         e500)
4583             cpuflags="-mcpu=8540 -mhard-float"
4584             disable altivec
4585             disable dcbzl
4586         ;;
4587     esac
4588
4589 elif enabled sparc; then
4590
4591     case $cpu in
4592         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4593             cpuflags="-mcpu=$cpu"
4594         ;;
4595         ultrasparc*|niagara[234])
4596             cpuflags="-mcpu=$cpu"
4597         ;;
4598     esac
4599
4600 elif enabled x86; then
4601
4602     case $cpu in
4603         i[345]86|pentium)
4604             cpuflags="-march=$cpu"
4605             disable i686
4606             disable mmx
4607         ;;
4608         # targets that do NOT support nopl and conditional mov (cmov)
4609         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4610             cpuflags="-march=$cpu"
4611             disable i686
4612         ;;
4613         # targets that do support nopl and conditional mov (cmov)
4614         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4615         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4616         |amdfam10|barcelona|b[dt]ver*|znver*)
4617             cpuflags="-march=$cpu"
4618             enable i686
4619             enable fast_cmov
4620         ;;
4621         # targets that do support conditional mov but on which it's slow
4622         pentium4|pentium4m|prescott|nocona)
4623             cpuflags="-march=$cpu"
4624             enable i686
4625             disable fast_cmov
4626         ;;
4627     esac
4628
4629 fi
4630
4631 if [ "$cpu" != generic ]; then
4632     add_cflags  $cpuflags
4633     add_asflags $cpuflags
4634     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4635 fi
4636
4637 # compiler sanity check
4638 check_exec <<EOF
4639 int main(void){ return 0; }
4640 EOF
4641 if test "$?" != 0; then
4642     echo "$cc is unable to create an executable file."
4643     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4644         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4645         echo "Only do this if you know what cross compiling means."
4646     fi
4647     die "C compiler test failed."
4648 fi
4649
4650 add_cppflags -D_ISOC99_SOURCE
4651 add_cxxflags -D__STDC_CONSTANT_MACROS
4652 add_cxxflags -std=c++98
4653
4654 # some compilers silently accept -std=c11, so we also need to check that the
4655 # version macro is defined properly
4656 if test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L"; then
4657     add_cflags -std=c11
4658 else
4659     check_cflags -std=c99
4660 fi
4661
4662 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4663 #include <stdlib.h>
4664 EOF
4665 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4666 #include <stdlib.h>
4667 EOF
4668
4669 add_host_cppflags -D_ISOC99_SOURCE
4670 check_host_cflags -std=c99
4671 check_host_cflags -Wall
4672 check_host_cflags -O3
4673
4674 check_64bit(){
4675     arch32=$1
4676     arch64=$2
4677     expr=$3
4678     check_code cc "" "int test[2*($expr) - 1]" &&
4679         subarch=$arch64 || subarch=$arch32
4680 }
4681
4682 case "$arch" in
4683     aarch64|alpha|ia64)
4684         spic=$shared
4685     ;;
4686     mips)
4687         check_64bit mips mips64 '_MIPS_SIM > 1'
4688         spic=$shared
4689     ;;
4690     parisc)
4691         check_64bit parisc parisc64 'sizeof(void *) > 4'
4692         spic=$shared
4693     ;;
4694     ppc)
4695         check_64bit ppc ppc64 'sizeof(void *) > 4'
4696         spic=$shared
4697     ;;
4698     s390)
4699         check_64bit s390 s390x 'sizeof(void *) > 4'
4700         spic=$shared
4701     ;;
4702     sparc)
4703         check_64bit sparc sparc64 'sizeof(void *) > 4'
4704         spic=$shared
4705     ;;
4706     x86)
4707         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4708         # Treat x32 as x64 for now. Note it also needs spic=$shared
4709         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4710             subarch=x86_64
4711         if test "$subarch" = "x86_64"; then
4712             spic=$shared
4713         fi
4714     ;;
4715     ppc)
4716         check_cc <<EOF && subarch="ppc64"
4717         int test[(int)sizeof(char*) - 7];
4718 EOF
4719     ;;
4720 esac
4721
4722 enable $subarch
4723 enabled spic && enable_weak pic
4724
4725 # OS specific
4726 case $target_os in
4727     aix)
4728         SHFLAGS=-shared
4729         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4730         enabled shared && add_ldflags -Wl,-brtl
4731         ;;
4732     android)
4733         disable symver
4734         enable section_data_rel_ro
4735         SLIB_INSTALL_NAME='$(SLIBNAME)'
4736         SLIB_INSTALL_LINKS=
4737         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4738         ;;
4739     haiku)
4740         prefix_default="/boot/common"
4741         network_extralibs="-lnetwork"
4742         host_libs=
4743         ;;
4744     sunos)
4745         SHFLAGS='-shared -Wl,-h,$$(@F)'
4746         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4747         network_extralibs="-lsocket -lnsl"
4748         add_cppflags -D__EXTENSIONS__
4749         # When using suncc to build, the Solaris linker will mark
4750         # an executable with each instruction set encountered by
4751         # the Solaris assembler.  As our libraries contain their own
4752         # guards for processor-specific code, instead suppress
4753         # generation of the HWCAPS ELF section on Solaris x86 only.
4754         enabled_all suncc x86 &&
4755             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4756             add_ldflags -Wl,-M,mapfile
4757         nm_default='nm -P -g'
4758         version_script='-M'
4759         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
4760         ;;
4761     netbsd)
4762         disable symver
4763         oss_indev_extralibs="-lossaudio"
4764         oss_outdev_extralibs="-lossaudio"
4765         enabled gcc || check_ldflags -Wl,-zmuldefs
4766         ;;
4767     openbsd|bitrig)
4768         disable symver
4769         SHFLAGS='-shared'
4770         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4771         SLIB_INSTALL_LINKS=
4772         oss_indev_extralibs="-lossaudio"
4773         oss_outdev_extralibs="-lossaudio"
4774         ;;
4775     dragonfly)
4776         disable symver
4777         ;;
4778     freebsd)
4779         ;;
4780     bsd/os)
4781         add_extralibs -lpoll -lgnugetopt
4782         strip="strip -d"
4783         ;;
4784     darwin)
4785         enabled ppc && add_asflags -force_cpusubtype_ALL
4786         install_name_dir_default='$(SHLIBDIR)'
4787         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4788         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4789         strip="${strip} -x"
4790         add_ldflags -Wl,-dynamic,-search_paths_first
4791         SLIBSUF=".dylib"
4792         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4793         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4794         objformat="macho"
4795         enabled x86_64 && objformat="macho64"
4796         enabled_any pic shared x86_64 ||
4797             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4798         check_header dispatch/dispatch.h &&
4799             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
4800         version_script='-exported_symbols_list'
4801         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
4802         ;;
4803     msys*)
4804         die "Native MSYS builds are discouraged, please use the MINGW environment."
4805         ;;
4806     mingw32*|mingw64*)
4807         if test $target_os = "mingw32ce"; then
4808             disable network
4809         else
4810             target_os=mingw32
4811         fi
4812         decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
4813         decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
4814         LIBTARGET=i386
4815         if enabled x86_64; then
4816             LIBTARGET="i386:x86-64"
4817         elif enabled arm; then
4818             LIBTARGET=arm-wince
4819         fi
4820         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4821         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4822         shlibdir_default="$bindir_default"
4823         SLIBPREF=""
4824         SLIBSUF=".dll"
4825         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4826         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4827         dlltool="${cross_prefix}dlltool"
4828         if check_cmd lib.exe -list; then
4829             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4830             if enabled x86_64; then
4831                 LIBTARGET=x64
4832             fi
4833         elif check_cmd $dlltool --version; then
4834             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4835         fi
4836         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4837         SLIB_INSTALL_LINKS=
4838         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4839         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4840         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--disable-auto-image-base'
4841         objformat="win32"
4842         ranlib=:
4843         enable dos_paths
4844         check_ldflags -Wl,--nxcompat,--dynamicbase
4845         # Lets work around some stupidity in binutils.
4846         # ld will strip relocations from executables even though we need them
4847         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4848         # however ld then forgets what the entry point should be (oops) so we
4849         # have to manually (re)set it.
4850         if enabled x86_32; then
4851             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
4852         elif enabled x86_64; then
4853             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
4854             check_ldflags -Wl,--high-entropy-va # binutils 2.25
4855             # Set image base >4GB for extra entropy with HEASLR
4856             add_ldexeflags -Wl,--image-base,0x140000000
4857             append SHFLAGS -Wl,--image-base,0x180000000
4858         fi
4859         ;;
4860     win32|win64)
4861         disable symver
4862         if enabled shared; then
4863             # Link to the import library instead of the normal static library
4864             # for shared libs.
4865             LD_LIB='%.lib'
4866             # Cannot build both shared and static libs with MSVC or icl.
4867             disable static
4868         fi
4869         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4870         shlibdir_default="$bindir_default"
4871         SLIBPREF=""
4872         SLIBSUF=".dll"
4873         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4874         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4875         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4876         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4877         SLIB_INSTALL_LINKS=
4878         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4879         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4880         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4881         objformat="win32"
4882         ranlib=:
4883         enable dos_paths
4884         ;;
4885     cygwin*)
4886         target_os=cygwin
4887         shlibdir_default="$bindir_default"
4888         SLIBPREF="cyg"
4889         SLIBSUF=".dll"
4890         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4891         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4892         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4893         SLIB_INSTALL_LINKS=
4894         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4895         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4896         objformat="win32"
4897         enable dos_paths
4898         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4899         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4900         ;;
4901     *-dos|freedos|opendos)
4902         network_extralibs="-lsocket"
4903         objformat="coff"
4904         enable dos_paths
4905         add_cppflags -U__STRICT_ANSI__
4906         ;;
4907     linux)
4908         enable dv1394
4909         enable section_data_rel_ro
4910         ;;
4911     irix*)
4912         target_os=irix
4913         ranlib="echo ignoring ranlib"
4914         ;;
4915     os/2*)
4916         strip="lxlite -CS"
4917         objformat="aout"
4918         add_cppflags -D_GNU_SOURCE
4919         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4920         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4921         LIBSUF="_s.a"
4922         SLIBPREF=""
4923         SLIBSUF=".dll"
4924         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4925         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4926         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
4927             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
4928             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
4929             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
4930             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
4931         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
4932             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
4933         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4934         SLIB_INSTALL_LINKS=
4935         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
4936         enable dos_paths
4937         enable_weak os2threads
4938         ;;
4939     gnu/kfreebsd)
4940         add_cppflags -D_BSD_SOURCE
4941         ;;
4942     gnu)
4943         ;;
4944     qnx)
4945         add_cppflags -D_QNX_SOURCE
4946         network_extralibs="-lsocket"
4947         ;;
4948     symbian)
4949         SLIBSUF=".dll"
4950         enable dos_paths
4951         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4952         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4953         add_ldflags -Wl,--target1-abs,--no-undefined \
4954                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4955                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4956         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4957                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4958                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4959         ;;
4960     osf1)
4961         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4962         ;;
4963     minix)
4964         ;;
4965     plan9)
4966         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4967                      -D_REENTRANT_SOURCE        \
4968                      -D_RESEARCH_SOURCE         \
4969                      -DFD_SETSIZE=96            \
4970                      -DHAVE_SOCK_OPTS
4971         add_compat strtod.o strtod=avpriv_strtod
4972         network_extralibs='-lbsd'
4973         exeobjs=compat/plan9/main.o
4974         disable ffserver
4975         cp_f='cp'
4976         ;;
4977     none)
4978         ;;
4979     *)
4980         die "Unknown OS '$target_os'."
4981         ;;
4982 esac
4983
4984 # test if creating links works
4985 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
4986 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
4987 mkdir "$link_dest"
4988 $ln_s "$link_dest" "$link_name"
4989 touch "$link_dest/test_file"
4990 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
4991     # create link to source path
4992     [ -e src ] && rm src
4993     $ln_s "$source_path" src
4994     source_link=src
4995 else
4996     # creating directory links doesn't work
4997     # fall back to using the full source path
4998     source_link="$source_path"
4999 fi
5000 # cleanup
5001 rm -r "$link_dest"
5002 rm -r "$link_name"
5003
5004 # determine libc flavour
5005
5006 probe_libc(){
5007     pfx=$1
5008     pfx_no_=${pfx%_}
5009     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5010     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5011         eval ${pfx}libc_type=uclibc
5012         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5013     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5014         eval ${pfx}libc_type=glibc
5015         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5016     # MinGW headers can be installed on Cygwin, so check for newlib first.
5017     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5018         eval ${pfx}libc_type=newlib
5019         add_${pfx}cppflags -U__STRICT_ANSI__
5020     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5021     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5022         eval ${pfx}libc_type=mingw64
5023         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5024             add_compat msvcrt/snprintf.o
5025             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5026         fi
5027         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5028         eval test \$${pfx_no_}cc_type = "gcc" &&
5029             add_${pfx}cppflags -D__printf__=__gnu_printf__
5030     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5031          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5032         eval ${pfx}libc_type=mingw32
5033         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5034             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5035             die "ERROR: MinGW32 runtime version must be >= 3.15."
5036         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5037         check_${pfx}cpp_condition _mingw.h "defined(_WIN32_WINNT) && _WIN32_WINNT >= 0x0502" ||
5038             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
5039         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700__" &&
5040             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5041         eval test \$${pfx_no_}cc_type = "gcc" &&
5042             add_${pfx}cppflags -D__printf__=__gnu_printf__
5043     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5044         eval ${pfx}libc_type=msvcrt
5045         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5046             if [ "$pfx" = host_ ]; then
5047                 add_host_cppflags -Dsnprintf=_snprintf
5048             else
5049                 add_compat strtod.o strtod=avpriv_strtod
5050                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5051                                              _snprintf=avpriv_snprintf  \
5052                                              vsnprintf=avpriv_vsnprintf
5053             fi
5054         fi
5055         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5056         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5057         # 0x601 by default unless something else is set by the user.
5058         # This can easily lead to us detecting functions only present
5059         # in such new versions and producing binaries requiring windows 7.0.
5060         # Therefore explicitly set the default to XP unless the user has
5061         # set something else on the command line.
5062         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5063         # family. For these cases, configure is free to use any functions
5064         # found in the SDK headers by default. (Alternatively, we could force
5065         # _WIN32_WINNT to 0x0602 in that case.)
5066         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5067             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
5068 #ifdef WINAPI_FAMILY
5069 #include <winapifamily.h>
5070 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5071 #error not desktop
5072 #endif
5073 #endif
5074 EOF
5075         if [ "$pfx" = "" ]; then
5076             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5077             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5078         fi
5079     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5080         eval ${pfx}libc_type=klibc
5081     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5082         eval ${pfx}libc_type=bionic
5083     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5084         eval ${pfx}libc_type=solaris
5085         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5086     fi
5087     check_${pfx}cc <<EOF
5088 #include <time.h>
5089 void *v = localtime_r;
5090 EOF
5091 test "$?" != 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
5092 #include <time.h>
5093 void *v = localtime_r;
5094 EOF
5095
5096 }
5097
5098 probe_libc
5099 test -n "$libc_type" && enable libc_$libc_type
5100 probe_libc host_
5101 test -n "$host_libc_type" && enable host_libc_$host_libc_type
5102
5103 case $libc_type in
5104     bionic)
5105         add_compat strtod.o strtod=avpriv_strtod
5106         ;;
5107 esac
5108
5109 # hacks for compiler/libc/os combinations
5110
5111 if enabled_all tms470 libc_glibc; then
5112     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
5113     add_cppflags -D__USER_LABEL_PREFIX__=
5114     add_cppflags -D__builtin_memset=memset
5115     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
5116     add_cflags   -pds=48    # incompatible redefinition of macro
5117 fi
5118
5119 if enabled_all ccc libc_glibc; then
5120     add_ldflags -Wl,-z,now  # calls to libots crash without this
5121 fi
5122
5123 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5124     add_cppflags '-I\$(SRC_PATH)/compat/float'
5125
5126 esc(){
5127     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
5128 }
5129
5130 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
5131
5132 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5133
5134 set_default libdir
5135 : ${shlibdir_default:="$libdir"}
5136 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5137
5138 set_default $PATHS_LIST
5139 set_default nm
5140
5141 # we need to build at least one lib type
5142 if ! enabled_any static shared; then
5143     cat <<EOF
5144 At least one library type must be built.
5145 Specify --enable-static to build the static libraries or --enable-shared to
5146 build the shared libraries as well. To only build the shared libraries specify
5147 --disable-static in addition to --enable-shared.
5148 EOF
5149     exit 1
5150 fi
5151
5152 die_license_disabled() {
5153     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
5154 }
5155
5156 die_license_disabled_gpl() {
5157     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
5158 }
5159
5160 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
5161 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
5162
5163 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
5164 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
5165
5166 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
5167
5168 disabled optimizations || check_cflags -fomit-frame-pointer
5169
5170 enable_weak_pic() {
5171     disabled pic && return
5172     enable pic
5173     add_cppflags -DPIC
5174     case "$target_os" in
5175     mingw*|cygwin*)
5176         ;;
5177     *)
5178         add_cflags -fPIC
5179         ;;
5180     esac
5181     add_asflags  -fPIC
5182 }
5183
5184 enabled pic && enable_weak_pic
5185
5186 check_cc <<EOF || die "Symbol mangling check failed."
5187 int ff_extern;
5188 EOF
5189 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5190 extern_prefix=${sym%%ff_extern*}
5191
5192 check_cc <<EOF && enable_weak inline_asm
5193 void foo(void) { __asm__ volatile ("" ::); }
5194 EOF
5195
5196 _restrict=
5197 for restrict_keyword in restrict __restrict__ __restrict; do
5198     check_cc <<EOF && _restrict=$restrict_keyword && break
5199 void foo(char * $restrict_keyword p);
5200 EOF
5201 done
5202
5203 check_cc <<EOF && enable pragma_deprecated
5204 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
5205 EOF
5206
5207 check_cc <<EOF && enable attribute_packed
5208 struct { int x; } __attribute__((packed)) x;
5209 EOF
5210
5211 check_cc <<EOF && enable attribute_may_alias
5212 union { int x; } __attribute__((may_alias)) x;
5213 EOF
5214
5215 check_cc <<EOF || die "endian test failed"
5216 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5217 EOF
5218 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5219
5220 if ! enabled ppc64 || enabled bigendian; then
5221     disable vsx
5222 fi
5223
5224 check_gas() {
5225     log "check_gas using '$as' as AS"
5226     # :vararg is used on aarch64, arm and ppc altivec
5227     check_as <<EOF || return 1
5228 .macro m n, y:vararg=0
5229 \n: .int \y
5230 .endm
5231 m x
5232 EOF
5233     # .altmacro is only used in arm asm
5234     ! enabled arm || check_as <<EOF || return 1
5235 .altmacro
5236 EOF
5237     enable gnu_as
5238     return 0
5239 }
5240
5241 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5242     nogas=:
5243     enabled_any arm aarch64 && nogas=die
5244     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5245     as_noop=-v
5246
5247     case $as_type in
5248         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5249         gcc)  gaspp_as_type=gas ;;
5250         *)    gaspp_as_type=$as_type ;;
5251     esac
5252
5253     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5254
5255     test "${as#*gas-preprocessor.pl}" != "$as" ||
5256     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5257         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5258
5259     if ! check_gas ; then
5260         as=${gas:=$as}
5261         check_gas || \
5262             $nogas "GNU assembler not found, install/update gas-preprocessor"
5263     fi
5264
5265     check_as <<EOF && enable as_func
5266 .func test
5267 .endfunc
5268 EOF
5269 fi
5270
5271 check_inline_asm inline_asm_labels '"1:\n"'
5272
5273 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5274
5275 if enabled aarch64; then
5276     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5277     # internal assembler in clang 3.3 does not support this instruction
5278     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5279     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5280
5281     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5282
5283 elif enabled alpha; then
5284
5285     check_cflags -mieee
5286
5287 elif enabled arm; then
5288
5289     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
5290
5291     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
5292 float func(float a, float b){ return a+b; }
5293 EOF
5294
5295     enabled thumb && check_cflags -mthumb || check_cflags -marm
5296
5297     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
5298         enable vfp_args
5299     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5300         enable vfp_args
5301     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5302         case "${cross_prefix:-$cc}" in
5303             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
5304             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
5305 __asm__ (".eabi_attribute 28, 1");
5306 int main(void) { return 0; }
5307 EOF
5308         esac
5309         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5310     fi
5311
5312     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5313     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5314     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5315     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5316     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5317     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5318     enabled setend  && check_insn setend  'setend be'
5319
5320     [ $target_os = linux ] || [ $target_os = android ] ||
5321         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5322             $ARCH_EXT_LIST_ARM
5323
5324     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5325
5326     check_as <<EOF && enable as_dn_directive
5327 ra .dn d0.i16
5328 .unreq ra
5329 EOF
5330     check_as <<EOF && enable as_fpu_directive
5331 .fpu neon
5332 EOF
5333
5334     # llvm's integrated assembler supports .object_arch from llvm 3.5
5335     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
5336 .object_arch armv4
5337 EOF
5338
5339     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5340
5341 elif enabled mips; then
5342
5343     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5344     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5345     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5346
5347     # Enable minimum ISA based on selected options
5348     if enabled mips64; then
5349         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5350         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5351         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5352     else
5353         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5354         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5355         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5356         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5357     fi
5358
5359     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5360     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5361     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
5362     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5363     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5364
5365 elif enabled parisc; then
5366
5367     if enabled gcc; then
5368         case $($cc -dumpversion) in
5369             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5370         esac
5371     fi
5372
5373 elif enabled ppc; then
5374
5375     enable local_aligned_8 local_aligned_16 local_aligned_32
5376
5377     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5378     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5379     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5380     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5381
5382     # AltiVec flags: The FSF version of GCC differs from the Apple version
5383     if enabled altivec; then
5384         check_cflags -maltivec -mabi=altivec &&
5385         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
5386         check_cflags -faltivec
5387
5388         # check if our compiler supports Motorola AltiVec C API
5389         check_cc <<EOF || disable altivec
5390 $inc_altivec_h
5391 int main(void) {
5392     vector signed int v1 = (vector signed int) { 0 };
5393     vector signed int v2 = (vector signed int) { 1 };
5394     v1 = vec_add(v1, v2);
5395     return 0;
5396 }
5397 EOF
5398
5399         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5400     fi
5401
5402     if enabled vsx; then
5403         check_cflags -mvsx &&
5404         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
5405     fi
5406
5407     if enabled power8; then
5408         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
5409     fi
5410
5411 elif enabled x86; then
5412
5413     check_builtin rdtsc    intrin.h   "__rdtsc()"
5414     check_builtin mm_empty mmintrin.h "_mm_empty()"
5415
5416     enable local_aligned_8 local_aligned_16 local_aligned_32
5417
5418     # check whether EBP is available on x86
5419     # As 'i' is stored on the stack, this program will crash
5420     # if the base pointer is used to access it because the
5421     # base pointer is cleared in the inline assembly code.
5422     check_exec_crash <<EOF && enable ebp_available
5423 volatile int i=0;
5424 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5425 return i;
5426 EOF
5427
5428     # check whether EBX is available on x86
5429     check_inline_asm ebx_available '""::"b"(0)' &&
5430         check_inline_asm ebx_available '"":::"%ebx"'
5431
5432     # check whether xmm clobbers are supported
5433     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5434
5435     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5436         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5437
5438     # check whether binutils is new enough to compile SSSE3/MMXEXT
5439     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5440     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5441
5442     if ! disabled_any asm mmx yasm; then
5443         if check_cmd $yasmexe --version; then
5444             enabled x86_64 && yasm_extra="-m amd64"
5445             yasm_debug="-g dwarf2"
5446         elif check_cmd nasm -v; then
5447             yasmexe=nasm
5448             yasm_debug="-g -F dwarf"
5449             if enabled x86_64; then
5450                 case "$objformat" in
5451                     elf)   objformat=elf64 ;;
5452                     win32) objformat=win64 ;;
5453                 esac
5454             fi
5455         fi
5456
5457         YASMFLAGS="-f $objformat $yasm_extra"
5458         enabled pic               && append YASMFLAGS "-DPIC"
5459         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
5460         case "$objformat" in
5461             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
5462         esac
5463
5464         check_yasm "movbe ecx, [5]" && enable yasm ||
5465             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
5466         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
5467         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
5468         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
5469         check_yasm "CPU amdnop" || disable cpunop
5470     fi
5471
5472     case "$cpu" in
5473         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5474             disable fast_clz
5475         ;;
5476     esac
5477
5478 fi
5479
5480 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
5481
5482 check_ldflags -Wl,--as-needed
5483 check_ldflags -Wl,-z,noexecstack
5484
5485 if check_func dlopen && check_func dlsym; then
5486     ldl=
5487 elif check_func dlopen -ldl && check_func dlsym -ldl; then
5488     ldl=-ldl
5489 fi
5490
5491 avisynth_demuxer_extralibs='$ldl'
5492 cuda_extralibs='$ldl'
5493 decklink_outdev_extralibs="$decklink_outdev_extralibs $ldl"
5494 decklink_indev_extralibs="$decklink_indev_extralibs $ldl"
5495 frei0r_filter_extralibs='$ldl'
5496 frei0r_src_filter_extralibs='$ldl'
5497 ladspa_filter_extralibs='$ldl'
5498 nvenc_extralibs='$ldl'
5499 coreimage_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5500 coreimagesrc_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5501
5502 if ! disabled network; then
5503     check_func getaddrinfo $network_extralibs
5504     check_func inet_aton $network_extralibs
5505
5506     check_type netdb.h "struct addrinfo"
5507     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5508     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5509     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5510     check_type poll.h "struct pollfd"
5511     check_type netinet/sctp.h "struct sctp_event_subscribe"
5512     check_struct "sys/socket.h" "struct msghdr" msg_flags
5513     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5514     check_type netinet/in.h "struct sockaddr_in6"
5515     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5516     check_type "sys/types.h sys/socket.h" socklen_t
5517
5518     # Prefer arpa/inet.h over winsock2
5519     if check_header arpa/inet.h ; then
5520         check_func closesocket
5521     elif check_header winsock2.h ; then
5522         check_func_headers winsock2.h closesocket -lws2 &&
5523             network_extralibs="-lws2" ||
5524         { check_func_headers winsock2.h closesocket -lws2_32 &&
5525             network_extralibs="-lws2_32"; } || disable winsock2_h network
5526         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5527
5528         check_type ws2tcpip.h socklen_t
5529         check_type ws2tcpip.h "struct addrinfo"
5530         check_type ws2tcpip.h "struct group_source_req"
5531         check_type ws2tcpip.h "struct ip_mreq_source"
5532         check_type ws2tcpip.h "struct ipv6_mreq"
5533         check_type winsock2.h "struct pollfd"
5534         check_struct winsock2.h "struct sockaddr" sa_len
5535         check_type ws2tcpip.h "struct sockaddr_in6"
5536         check_type ws2tcpip.h "struct sockaddr_storage"
5537     else
5538         disable network
5539     fi
5540 fi
5541
5542 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5543 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5544 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5545 check_builtin sarestart signal.h "SA_RESTART"
5546 check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" -lpthread
5547 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5548 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5549 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5550 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5551
5552 case "$custom_allocator" in
5553     jemalloc)
5554         # jemalloc by default does not use a prefix
5555         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5556     ;;
5557     tcmalloc)
5558         require_pkg_config libtcmalloc gperftools/tcmalloc.h tc_malloc
5559         malloc_prefix=tc_
5560     ;;
5561 esac
5562
5563 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5564 check_func  ${malloc_prefix}memalign            && enable memalign
5565 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5566
5567 check_func  access
5568 check_func_headers stdlib.h arc4random
5569 check_func_headers time.h clock_gettime ||
5570     { check_lib time.h clock_gettime -lrt && LIBRT="-lrt"; }
5571 check_func  fcntl
5572 check_func  fork
5573 check_func  gethrtime
5574 check_func  getopt
5575 check_func  getrusage
5576 check_func  gettimeofday
5577 check_func  isatty
5578 check_func  mach_absolute_time
5579 check_func  mkstemp
5580 check_func  mmap
5581 check_func  mprotect
5582 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5583 check_func_headers time.h nanosleep ||
5584     { check_lib time.h nanosleep -lrt && LIBRT="-lrt"; }
5585 check_func  sched_getaffinity
5586 check_func  setrlimit
5587 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5588 check_func  strerror_r
5589 check_func  sysconf
5590 check_func  sysctl
5591 check_func  usleep
5592
5593 check_func_headers conio.h kbhit
5594 check_func_headers io.h setmode
5595 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5596 check_func_headers stdlib.h getenv
5597 check_func_headers sys/stat.h lstat
5598
5599 check_func_headers windows.h CoTaskMemFree -lole32
5600 check_func_headers windows.h GetProcessAffinityMask
5601 check_func_headers windows.h GetProcessTimes
5602 check_func_headers windows.h GetSystemTimeAsFileTime
5603 check_func_headers windows.h LoadLibrary
5604 check_func_headers windows.h MapViewOfFile
5605 check_func_headers windows.h PeekNamedPipe
5606 check_func_headers windows.h SetConsoleTextAttribute
5607 check_func_headers windows.h SetConsoleCtrlHandler
5608 check_func_headers windows.h Sleep
5609 check_func_headers windows.h VirtualAlloc
5610 check_struct windows.h "CONDITION_VARIABLE" Ptr
5611 check_func_headers glob.h glob
5612 enabled xlib &&
5613     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5614
5615 check_header AudioToolbox/AudioToolbox.h
5616 check_header direct.h
5617 check_header dirent.h
5618 check_header dlfcn.h
5619 check_header d3d11.h
5620 check_header dxva.h
5621 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5622 check_header io.h
5623 check_header libcrystalhd/libcrystalhd_if.h
5624 check_header mach/mach_time.h
5625 check_header malloc.h
5626 check_header net/udplite.h
5627 check_header poll.h
5628 check_header sys/mman.h
5629 check_header sys/param.h
5630 check_header sys/resource.h
5631 check_header sys/select.h
5632 check_header sys/time.h
5633 check_header sys/un.h
5634 check_header termios.h
5635 check_header unistd.h
5636 check_header valgrind/valgrind.h
5637 check_header vdpau/vdpau.h
5638 check_header vdpau/vdpau_x11.h
5639 check_header VideoDecodeAcceleration/VDADecoder.h
5640 check_header VideoToolbox/VideoToolbox.h
5641 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5642 enabled videotoolbox && check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferColorPrimaries_ITU_R_2020 -framework CoreVideo
5643 check_header windows.h
5644 check_header X11/extensions/XvMClib.h
5645 check_header asm/types.h
5646
5647 # it seems there are versions of clang in some distros that try to use the
5648 # gcc headers, which explodes for stdatomic
5649 # so we also check that atomics actually work here
5650 check_builtin stdatomic_h stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0)"
5651
5652 check_lib "windows.h shellapi.h" CommandLineToArgvW   -lshell32
5653 check_lib "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
5654 check_lib "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
5655
5656 check_lib "CoreServices/CoreServices.h" UTGetOSTypeFromString "-framework CoreServices"
5657
5658 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5659
5660 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5661 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5662 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5663 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5664 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5665
5666 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
5667 check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
5668 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
5669 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
5670 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5671 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5672 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
5673 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
5674
5675 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5676
5677 check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt
5678
5679 if ! disabled w32threads && ! enabled pthreads; then
5680     check_func_headers "windows.h process.h" _beginthreadex &&
5681         enable w32threads || disable w32threads
5682     if ! enabled w32threads && enabled winrt; then
5683         check_func_headers "windows.h" CreateThread &&
5684             enable w32threads || disable w32threads
5685     fi
5686 fi
5687
5688 # check for some common methods of building with pthread support
5689 # do this before the optional library checks as some of them require pthreads
5690 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5691     enable pthreads
5692     if check_func pthread_join -pthread && check_func pthread_create -pthread; then
5693         add_cflags -pthread
5694         add_extralibs -pthread
5695     elif check_func pthread_join -pthreads && check_func pthread_create -pthreads; then
5696         add_cflags -pthreads
5697         add_extralibs -pthreads
5698     elif check_func pthread_join -ldl -pthread && check_func pthread_create -ldl -pthread; then
5699         add_cflags -ldl -pthread
5700         add_extralibs -ldl -pthread
5701     elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
5702         add_extralibs -lpthreadGC2
5703     elif check_lib pthread.h pthread_join -lpthread && check_lib pthread.h pthread_create -lpthread; then
5704         :
5705     elif ! check_func pthread_join && ! check_func pthread_create; then
5706         disable pthreads
5707     fi
5708     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5709 fi
5710
5711
5712 if enabled pthreads; then
5713   check_func pthread_cancel
5714 fi
5715
5716 enabled pthreads &&
5717     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)"
5718
5719 disabled  zlib || check_lib  zlib.h      zlibVersion    -lz    || disable  zlib
5720 disabled bzlib || check_lib bzlib.h BZ2_bzlibVersion    -lbz2  || disable bzlib
5721 disabled  lzma || check_lib  lzma.h lzma_version_number -llzma || disable lzma
5722
5723 check_lib math.h sin -lm && LIBM="-lm"
5724 disabled crystalhd || check_lib "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd || disable crystalhd
5725
5726 atan2f_args=2
5727 copysign_args=2
5728 hypot_args=2
5729 ldexpf_args=2
5730 powf_args=2
5731
5732 for func in $MATH_FUNCS; do
5733     eval check_mathfunc $func \${${func}_args:-1}
5734 done
5735
5736 for func in $COMPLEX_FUNCS; do
5737     eval check_complexfunc $func \${${func}_args:-1}
5738 done
5739
5740 # these are off by default, so fail if requested and not available
5741 enabled avfoundation_indev && { check_header_objcc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
5742 enabled avfoundation_indev && { check_lib CoreGraphics/CoreGraphics.h CGGetActiveDisplayList -framework CoreGraphics ||
5743                                 check_lib ApplicationServices/ApplicationServices.h CGGetActiveDisplayList -framework ApplicationServices; }
5744 enabled cuda              && check_header cuda.h # this is not a dependency
5745 enabled cuvid             && { enabled cuda ||
5746                                die "ERROR: CUVID requires CUDA"; }
5747 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5748 enabled coreimage_filter  && { check_header_objcc QuartzCore/CoreImage.h || disable coreimage_filter; }
5749 enabled coreimagesrc_filter && { check_header_objcc QuartzCore/CoreImage.h || disable coreimagesrc_filter; }
5750 enabled decklink          && { { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; } &&
5751                                { check_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a060100" || die "ERROR: Decklink API version must be >= 10.6.1."; } }
5752 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
5753 enabled gmp               && require gmp gmp.h mpz_export -lgmp
5754 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
5755 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads &&
5756                                check_lib "dlfcn.h" dlopen -ldl || die "ERROR: jni not found"; }
5757 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
5758 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5759 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
5760 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
5761 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
5762 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5763                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
5764                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5765 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
5766 enabled libfdk_aac        && { use_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5767                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5768                                  warn "using libfdk without pkg-config"; } }
5769 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"
5770 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_libs
5771 enabled fontconfig        && enable libfontconfig
5772 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
5773 enabled libfreetype       && require_libfreetype
5774 enabled libfribidi        && require_pkg_config fribidi fribidi.h fribidi_version_info
5775 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
5776 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5777                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
5778                                done || die "ERROR: libgsm not found"; }
5779 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
5780 enabled libkvazaar        && require_pkg_config "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
5781 enabled libmfx            && require_pkg_config libmfx "mfx/mfxvideo.h" MFXInit
5782 enabled libmodplug        && require_pkg_config libmodplug libmodplug/modplug.h ModPlug_Load
5783 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5784 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
5785 enabled libnpp            && require libnpp npp.h nppGetLibVersion -lnppi -lnppc
5786 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5787 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5788 enabled libopencv         && { check_header opencv2/core/core_c.h &&
5789                                { use_pkg_config opencv opencv2/core/core_c.h cvCreateImageHeader ||
5790                                  require opencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
5791                                require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader; }
5792 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
5793 enabled libopenjpeg       && { { check_lib openjpeg-2.1/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5794                                check_lib openjpeg-2.1/openjpeg.h opj_version -lopenjp2 ||
5795                                { check_lib openjpeg-2.0/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5796                                { check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5797                                { check_lib openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5798                                die "ERROR: libopenjpeg not found"; }
5799 enabled libopenmpt        && require_pkg_config "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create
5800 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
5801 enabled libpulse          && require_pkg_config libpulse pulse/pulseaudio.h pa_context_new
5802 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
5803 enabled librubberband     && require_pkg_config "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new
5804 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
5805 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
5806 enabled libsmbclient      && { use_pkg_config smbclient libsmbclient.h smbc_init ||
5807                                require smbclient libsmbclient.h smbc_init -lsmbclient; }
5808 enabled libsnappy         && require snappy snappy-c.h snappy_compress -lsnappy
5809 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr && LIBSOXR="-lsoxr"
5810 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
5811 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
5812 enabled libtesseract      && require_pkg_config tesseract tesseract/capi.h TessBaseAPICreate
5813 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
5814 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
5815                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
5816                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
5817 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
5818 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
5819 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
5820 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
5821
5822 enabled libvpx            && {
5823     enabled libvpx_vp8_decoder && {
5824         use_pkg_config "vpx >= 0.9.1" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
5825             check_lib "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
5826                 die "ERROR: libvpx decoder version must be >=0.9.1";
5827     }
5828     enabled libvpx_vp8_encoder && {
5829         use_pkg_config "vpx >= 0.9.7" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
5830             check_lib "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
5831                 die "ERROR: libvpx encoder version must be >=0.9.7";
5832     }
5833     enabled libvpx_vp9_decoder && {
5834         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
5835             check_lib "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx ||
5836                 disable libvpx_vp9_decoder;
5837     }
5838     enabled libvpx_vp9_encoder && {
5839         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
5840             check_lib "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx ||
5841                 disable libvpx_vp9_encoder;
5842     }
5843     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
5844         die "libvpx enabled but no supported decoders found"
5845     fi
5846 }
5847
5848 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
5849 enabled libwebp           && {
5850     enabled libwebp_encoder      && require_pkg_config "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
5851     enabled libwebp_anim_encoder && { use_pkg_config "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit || disable libwebp_anim_encoder; } }
5852 enabled libx264           && { use_pkg_config x264 "stdint.h x264.h" x264_encoder_encode ||
5853                                { require libx264 "stdint.h x264.h" x264_encoder_encode -lx264 &&
5854                                  warn "using libx264 without pkg-config"; } } &&
5855                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
5856                                die "ERROR: libx264 must be installed and version must be >= 0.118."; } &&
5857                              { check_cpp_condition x264.h "X264_MPEG2" &&
5858                                enable libx262; }
5859 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
5860                              { check_cpp_condition x265.h "X265_BUILD >= 68" ||
5861                                die "ERROR: libx265 version must be >= 68."; }
5862 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode -lxavs
5863 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
5864 enabled libzimg           && require_pkg_config "zimg >= 2.3.0" zimg.h zimg_get_api_version
5865 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
5866 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi &&
5867                              { check_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
5868                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
5869 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
5870 enabled mmal              && { check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
5871                                 { ! enabled cross_compile && {
5872                                     add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline ;
5873                                     add_extralibs -L/opt/vc/lib/ -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ;
5874                                     check_lib interface/mmal/mmal.h mmal_port_connect ; }
5875                                 check_lib interface/mmal/mmal.h mmal_port_connect ; } ||
5876                                die "ERROR: mmal not found"; }
5877 enabled mmal && check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"
5878
5879 enabled netcdf            && require_pkg_config netcdf netcdf.h nc_inq_libvers
5880 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
5881                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
5882                                die "ERROR: openal not found"; } &&
5883                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
5884                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
5885 enabled opencl            && { check_lib OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
5886                                check_lib CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
5887                                die "ERROR: opencl not found"; } &&
5888                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
5889                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
5890                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
5891 enabled opengl            && { check_lib GL/glx.h glXGetProcAddress "-lGL" ||
5892                                check_lib windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
5893                                check_lib OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
5894                                check_lib ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
5895                                die "ERROR: opengl not found."
5896                              }
5897 enabled omx_rpi && enable omx
5898 enabled omx               && { check_header OMX_Core.h ||
5899                                 { ! enabled cross_compile && enabled omx_rpi && {
5900                                     add_cflags -isystem/opt/vc/include/IL ; }
5901                                 check_header OMX_Core.h ; } ||
5902                                die "ERROR: OpenMAX IL headers not found"; }
5903 enabled openssl           && { use_pkg_config openssl openssl/ssl.h OPENSSL_init_ssl ||
5904                                use_pkg_config openssl openssl/ssl.h SSL_library_init ||
5905                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
5906                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
5907                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
5908                                die "ERROR: openssl not found"; }
5909 enabled qtkit_indev      && { check_header_objcc QTKit/QTKit.h || disable qtkit_indev; }
5910
5911 # libdc1394 check
5912 if enabled libdc1394; then
5913     { require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new &&
5914         enable libdc1394_2; } ||
5915     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
5916         enable libdc1394_1; } ||
5917     die "ERROR: No version of libdc1394 found "
5918 fi
5919
5920 if enabled gcrypt; then
5921     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
5922     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
5923         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
5924         gcrypt_libs=$("${GCRYPT_CONFIG}" --libs)
5925         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_libs ||
5926             die "ERROR: gcrypt not found"
5927         add_cflags $gcrypt_cflags && add_extralibs $gcrypt_libs
5928     else
5929         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
5930     fi
5931 fi
5932
5933 disabled sdl && disable sdl2
5934 if ! disabled sdl2; then
5935     SDL2_CONFIG="${cross_prefix}sdl2-config"
5936     if check_pkg_config sdl2 SDL_events.h SDL_PollEvent; then
5937         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
5938         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
5939         check_func SDL_Init $sdl2_libs $sdl2_cflags && enable sdl2
5940     else
5941       if "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
5942         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
5943         sdl2_libs=$("${SDL2_CONFIG}" --libs)
5944         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
5945         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
5946         check_func SDL_Init $sdl2_libs $sdl2_cflags && enable sdl2
5947       fi
5948     fi
5949     if test $target_os = "mingw32"; then
5950         sdl2_libs="$sdl2_libs -mconsole"
5951     fi
5952 fi
5953 enabled sdl2 && enable sdl && add_cflags $sdl2_cflags && add_extralibs $sdl2_libs
5954
5955 disabled securetransport || { check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5956     check_lib "Security/SecureTransport.h Security/Security.h" "SSLCreateContext SecItemImport" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5957     enable securetransport; }
5958
5959 disabled schannel || { check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
5960                        check_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" && enable schannel && add_extralibs -lsecur32; }
5961
5962 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
5963 enabled makeinfo \
5964     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
5965     && enable makeinfo_html || disable makeinfo_html
5966 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
5967 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
5968 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
5969 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
5970
5971 check_header linux/fb.h
5972 check_header linux/videodev.h
5973 check_header linux/videodev2.h
5974 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5975
5976 check_header sys/videoio.h
5977 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5978
5979 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
5980 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
5981 # w32api 3.12 had it defined wrong
5982 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
5983
5984 check_type "dshow.h" IBaseFilter
5985
5986 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
5987 { check_header dev/bktr/ioctl_meteor.h &&
5988   check_header dev/bktr/ioctl_bt848.h; } ||
5989 { check_header machine/ioctl_meteor.h &&
5990   check_header machine/ioctl_bt848.h; } ||
5991 { check_header dev/video/meteor/ioctl_meteor.h &&
5992   check_header dev/video/bktr/ioctl_bt848.h; } ||
5993 check_header dev/ic/bt8xx.h
5994
5995 check_header sndio.h
5996 if check_struct sys/soundcard.h audio_buf_info bytes; then
5997     enable_safe sys/soundcard.h
5998 else
5999     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
6000     #include <sys/soundcard.h>
6001     audio_buf_info abc;
6002 EOF
6003 fi
6004 check_header soundcard.h
6005
6006 enabled_any alsa_indev alsa_outdev &&
6007     check_lib alsa/asoundlib.h snd_pcm_htimestamp -lasound
6008
6009 enabled jack_indev && check_lib jack/jack.h jack_client_open -ljack &&
6010     check_func jack_port_get_latency_range -ljack
6011
6012 enabled_any sndio_indev sndio_outdev && check_lib sndio.h sio_open -lsndio
6013
6014 if enabled libcdio; then
6015     check_lib "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6016     check_lib "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6017     die "ERROR: No usable libcdio/cdparanoia found"
6018 fi
6019
6020 enabled xlib &&
6021     check_lib X11/Xlib.h XOpenDisplay -lX11 || disable xlib
6022
6023 if ! disabled libxcb; then
6024     check_pkg_config "xcb >= 1.4" xcb/xcb.h xcb_connect || {
6025         enabled libxcb && die "ERROR: libxcb >= 1.4 not found";
6026     } && enable libxcb
6027
6028 if enabled libxcb; then
6029     disabled libxcb_shm || {
6030         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
6031             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
6032         } && check_header sys/shm.h && enable libxcb_shm; }
6033
6034     disabled libxcb_xfixes || {
6035         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
6036             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
6037         } && enable libxcb_xfixes; }
6038
6039     disabled libxcb_shape || {
6040         check_pkg_config xcb-shape xcb/shape.h xcb_shape_get_rectangles || {
6041             enabled libxcb_shape && die "ERROR: libxcb_shape not found";
6042         } && enable libxcb_shape; }
6043
6044     add_cflags $xcb_cflags $xcb_shm_cflags $xcb_xfixes_cflags $xcb_shape_cflags
6045     add_extralibs $xcb_libs $xcb_shm_libs $xcb_xfixes_libs $xcb_shape_libs
6046 fi
6047 fi
6048
6049 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6050
6051 enabled dxva2api_h &&
6052     check_cc <<EOF && enable dxva2api_cobj
6053 #define _WIN32_WINNT 0x0600
6054 #define COBJMACROS
6055 #include <windows.h>
6056 #include <d3d9.h>
6057 #include <dxva2api.h>
6058 int main(void) { IDirectXVideoDecoder *o = NULL; IDirectXVideoDecoder_Release(o); return 0; }
6059 EOF
6060
6061 enabled vaapi &&
6062     check_lib va/va.h vaInitialize -lva ||
6063     disable vaapi
6064
6065 enabled vaapi &&
6066     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
6067     disable vaapi
6068
6069 if enabled vaapi ; then
6070     enabled xlib &&
6071     check_lib "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 &&
6072     enable vaapi_x11
6073
6074     check_lib "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm &&
6075     enable vaapi_drm
6076 fi
6077
6078 enabled vdpau &&
6079     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
6080     disable vdpau
6081
6082 enabled vdpau && enabled xlib &&
6083     check_lib "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
6084     enable vdpau_x11
6085
6086 if enabled x86; then
6087     case $target_os in
6088         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6089             ;;
6090         *)
6091             disable cuda cuvid nvenc
6092             ;;
6093     esac
6094 else
6095     disable cuda cuvid nvenc
6096 fi
6097
6098 enabled nvenc &&
6099     check_cc -I$source_path <<EOF || disable nvenc
6100 #include "compat/nvenc/nvEncodeAPI.h"
6101 NV_ENCODE_API_FUNCTION_LIST flist;
6102 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6103 int main(void) { return 0; }
6104 EOF
6105
6106 # Funny iconv installations are not unusual, so check it after all flags have been set
6107 disabled iconv || check_func_headers iconv.h iconv || check_lib iconv.h iconv -liconv || disable iconv
6108
6109 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6110
6111 # add some useful compiler flags if supported
6112 check_cflags -Wdeclaration-after-statement
6113 check_cflags -Wall
6114 check_cflags -Wdisabled-optimization
6115 check_cflags -Wpointer-arith
6116 check_cflags -Wredundant-decls
6117 check_cflags -Wwrite-strings
6118 check_cflags -Wtype-limits
6119 check_cflags -Wundef
6120 check_cflags -Wmissing-prototypes
6121 check_cflags -Wno-pointer-to-int-cast
6122 check_cflags -Wstrict-prototypes
6123 check_cflags -Wempty-body
6124 enabled extra_warnings && check_cflags -Winline
6125 enabled extra_warnings && check_cflags -Wcast-qual
6126
6127 check_disable_warning(){
6128     warning_flag=-W${1#-Wno-}
6129     test_cflags $warning_flag && add_cflags $1
6130 }
6131
6132 check_disable_warning -Wno-parentheses
6133 check_disable_warning -Wno-switch
6134 check_disable_warning -Wno-format-zero-length
6135 check_disable_warning -Wno-pointer-sign
6136 check_disable_warning -Wno-unused-const-variable
6137
6138 # add some linker flags
6139 check_ldflags -Wl,--warn-common
6140 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6141 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
6142 enabled rpath && add_ldlibflags -Wl,-rpath,$libdir
6143 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6144
6145 # add some strip flags
6146 # -wN '..@*' is more selective than -x, but not available everywhere.
6147 check_stripflags -wN \'..@*\' || check_stripflags -x
6148
6149 enabled neon_clobber_test &&
6150     check_ldflags -Wl,--wrap,avcodec_open2              \
6151                   -Wl,--wrap,avcodec_decode_audio4      \
6152                   -Wl,--wrap,avcodec_decode_video2      \
6153                   -Wl,--wrap,avcodec_decode_subtitle2   \
6154                   -Wl,--wrap,avcodec_encode_audio2      \
6155                   -Wl,--wrap,avcodec_encode_video2      \
6156                   -Wl,--wrap,avcodec_encode_subtitle    \
6157                   -Wl,--wrap,avcodec_send_packet        \
6158                   -Wl,--wrap,avcodec_receive_packet     \
6159                   -Wl,--wrap,avcodec_send_frame         \
6160                   -Wl,--wrap,avcodec_receive_frame      \
6161                   -Wl,--wrap,swr_convert                \
6162                   -Wl,--wrap,avresample_convert ||
6163     disable neon_clobber_test
6164
6165 enabled xmm_clobber_test &&
6166     check_ldflags -Wl,--wrap,avcodec_open2              \
6167                   -Wl,--wrap,avcodec_decode_audio4      \
6168                   -Wl,--wrap,avcodec_decode_video2      \
6169                   -Wl,--wrap,avcodec_decode_subtitle2   \
6170                   -Wl,--wrap,avcodec_encode_audio2      \
6171                   -Wl,--wrap,avcodec_encode_video2      \
6172                   -Wl,--wrap,avcodec_encode_subtitle    \
6173                   -Wl,--wrap,avcodec_send_packet        \
6174                   -Wl,--wrap,avcodec_receive_packet     \
6175                   -Wl,--wrap,avcodec_send_frame         \
6176                   -Wl,--wrap,avcodec_receive_frame      \
6177                   -Wl,--wrap,swr_convert                \
6178                   -Wl,--wrap,avresample_convert         \
6179                   -Wl,--wrap,sws_scale ||
6180     disable xmm_clobber_test
6181
6182 check_ld "cc" <<EOF && enable proper_dce
6183 extern const int array[512];
6184 static inline int func(void) { return array[0]; }
6185 int main(void) { return 0; }
6186 EOF
6187
6188 if enabled proper_dce; then
6189     echo "X { local: *; };" > $TMPV
6190     if test_ldflags -Wl,${version_script},$TMPV; then
6191         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6192         check_cc <<EOF && enable symver_asm_label
6193 void ff_foo(void) __asm__ ("av_foo@VERSION");
6194 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6195 EOF
6196         check_cc <<EOF && enable symver_gnu_asm
6197 __asm__(".symver ff_foo,av_foo@VERSION");
6198 void ff_foo(void) {}
6199 EOF
6200     fi
6201 fi
6202
6203 if [ -z "$optflags" ]; then
6204     if enabled small; then
6205         optflags=$cflags_size
6206     elif enabled optimizations; then
6207         optflags=$cflags_speed
6208     else
6209         optflags=$cflags_noopt
6210     fi
6211 fi
6212
6213 check_optflags(){
6214     check_cflags "$@"
6215     enabled lto && check_ldflags "$@"
6216 }
6217
6218
6219 if enabled lto; then
6220     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6221     check_cflags  -flto
6222     check_ldflags -flto $cpuflags
6223     disable inline_asm_direct_symbol_refs
6224 fi
6225
6226 check_optflags $optflags
6227 check_optflags -fno-math-errno
6228 check_optflags -fno-signed-zeros
6229
6230 enabled ftrapv && check_cflags -ftrapv
6231
6232 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6233 int x;
6234 EOF
6235
6236
6237 if enabled icc; then
6238     # Just warnings, no remarks
6239     check_cflags -w1
6240     # -wd: Disable following warnings
6241     # 144, 167, 556: -Wno-pointer-sign
6242     # 188: enumerated type mixed with another type
6243     # 1292: attribute "foo" ignored
6244     # 1419: external declaration in primary source file
6245     # 10006: ignoring unknown option -fno-signed-zeros
6246     # 10148: ignoring unknown option -Wno-parentheses
6247     # 10156: ignoring option '-W'; no argument required
6248     # 13200: No EMMS instruction before call to function
6249     # 13203: No EMMS instruction before return from function
6250     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6251     # 11030: Warning unknown option --as-needed
6252     # 10156: ignoring option '-export'; no argument required
6253     check_ldflags -wd10156,11030
6254     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6255     enable ebp_available
6256     # The test above does not test linking
6257     enabled lto && disable symver_asm_label
6258     if enabled x86_32; then
6259         icc_version=$($cc -dumpversion)
6260         test ${icc_version%%.*} -ge 11 &&
6261             check_cflags -falign-stack=maintain-16-byte ||
6262             disable aligned_stack
6263     fi
6264 elif enabled ccc; then
6265     # disable some annoying warnings
6266     add_cflags -msg_disable bitnotint
6267     add_cflags -msg_disable mixfuncvoid
6268     add_cflags -msg_disable nonstandcast
6269     add_cflags -msg_disable unsupieee
6270 elif enabled gcc; then
6271     check_optflags -fno-tree-vectorize
6272     check_cflags -Werror=format-security
6273     check_cflags -Werror=implicit-function-declaration
6274     check_cflags -Werror=missing-prototypes
6275     check_cflags -Werror=return-type
6276     check_cflags -Werror=vla
6277     check_cflags -Wformat
6278     check_cflags -fdiagnostics-color=auto
6279     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6280 elif enabled llvm_gcc; then
6281     check_cflags -mllvm -stack-alignment=16
6282 elif enabled clang; then
6283     check_cflags -mllvm -stack-alignment=16
6284     check_cflags -mstack-alignment=16
6285     check_cflags -Qunused-arguments
6286     check_cflags -Werror=implicit-function-declaration
6287     check_cflags -Werror=missing-prototypes
6288     check_cflags -Werror=return-type
6289 elif enabled cparser; then
6290     add_cflags -Wno-missing-variable-declarations
6291     add_cflags -Wno-empty-statement
6292 elif enabled armcc; then
6293     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6294     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6295     # 2523: use of inline assembly is deprecated
6296     add_cflags -W${armcc_opt},--diag_suppress=2523
6297     add_cflags -W${armcc_opt},--diag_suppress=1207
6298     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6299     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6300     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6301     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6302 elif enabled tms470; then
6303     add_cflags -pds=824 -pds=837
6304     disable inline_asm
6305 elif enabled pathscale; then
6306     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6307 elif enabled_any msvc icl; then
6308     enabled x86_32 && disable aligned_stack
6309     enabled_all x86_32 debug && add_cflags -Oy-
6310     enabled debug && add_ldflags -debug
6311     enable pragma_deprecated
6312     if enabled icl; then
6313         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6314         # (correctly) on icl 13.x.
6315         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6316             add_cflags -Qansi-alias
6317         # Some inline asm is not compilable in debug
6318         if enabled debug; then
6319             disable ebp_available
6320             disable ebx_available
6321         fi
6322     fi
6323     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6324     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
6325     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6326     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6327     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6328     # MSVC 2013 and newer can handle it fine.
6329     # If this declspec fails, force including stdlib.h before the restrict redefinition
6330     # happens in config.h.
6331     if [ $_restrict != restrict ]; then
6332         check_cc <<EOF || add_cflags -FIstdlib.h
6333 __declspec($_restrict) void* foo(int);
6334 EOF
6335     fi
6336     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6337     # Issue has been fixed in MSVC v19.00.24218.
6338     check_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6339         check_cflags -d2SSAOptimizer-
6340     # enable utf-8 source processing on VS2015 U2 and newer
6341     check_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6342         add_cflags -utf-8
6343 fi
6344
6345 for pfx in "" host_; do
6346     varname=${pfx%_}cc_type
6347     eval "type=\$$varname"
6348     if [ $type = "msvc" ]; then
6349         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6350 static inline int foo(int a) { return a; }
6351 EOF
6352     fi
6353 done
6354
6355 case $as_type in
6356     clang)
6357         add_asflags -Qunused-arguments
6358     ;;
6359 esac
6360
6361 case $ld_type in
6362     clang)
6363         check_ldflags -Qunused-arguments
6364     ;;
6365 esac
6366
6367 case $target_os in
6368     osf1)
6369         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
6370     ;;
6371     plan9)
6372         add_cppflags -Dmain=plan9_main
6373     ;;
6374 esac
6375
6376 enable frame_thread_encoder
6377
6378 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6379
6380 check_deps $CONFIG_LIST       \
6381            $CONFIG_EXTRA      \
6382            $HAVE_LIST         \
6383            $ALL_COMPONENTS    \
6384
6385 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"
6386
6387
6388 if test $target_os = "haiku"; then
6389     disable memalign
6390     disable posix_memalign
6391 fi
6392
6393 enabled_all dxva2 dxva2api_cobj CoTaskMemFree &&
6394     prepend ffmpeg_libs $($ldflags_filter "-lole32") &&
6395     enable dxva2_lib
6396
6397 # add_dep lib dep
6398 # -> enable ${lib}_deps_${dep}
6399 # -> add $dep to ${lib}_deps only once
6400 add_dep() {
6401     lib=$1
6402     dep=$2
6403     enabled "${lib}_deps_${dep}" && return 0
6404     enable  "${lib}_deps_${dep}"
6405     prepend "${lib}_deps" $dep
6406 }
6407
6408 # merge deps lib components
6409 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
6410 merge_deps() {
6411     lib=$1
6412     shift
6413     for comp in $*; do
6414         enabled $comp || continue
6415         eval "dep=\"\$${comp}_deps\""
6416         for d in $dep; do
6417             add_dep $lib $d
6418         done
6419     done
6420 }
6421
6422 merge_deps libavfilter $FILTER_LIST
6423
6424 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6425
6426 for thread in $THREADS_LIST; do
6427     if enabled $thread; then
6428         test -n "$thread_type" &&
6429             die "ERROR: Only one thread type must be selected." ||
6430             thread_type="$thread"
6431     fi
6432 done
6433
6434 if disabled stdatomic_h; then
6435     if enabled atomics_gcc; then
6436         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6437     elif enabled atomics_win32; then
6438         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6439     elif enabled atomics_suncc; then
6440         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6441     elif enabled pthreads; then
6442         add_compat atomics/pthread/stdatomic.o
6443         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6444     else
6445         enabled threads && die "Threading is enabled, but no atomics are available"
6446         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6447     fi
6448 fi
6449
6450 # Check if requested libraries were found.
6451 for lib in $AUTODETECT_LIBS; do
6452     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6453 done
6454
6455 enabled zlib && add_cppflags -DZLIB_CONST
6456
6457 # conditional library dependencies, in linking order
6458 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6459 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6460 enabled aresample_filter    && prepend avfilter_deps "swresample"
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 # generate the lists of enabled components
6847 print_enabled_components(){
6848     file=$1
6849     struct_name=$2
6850     name=$3
6851     shift 3
6852     echo "static const $struct_name *$name[] = {" > $TMPH
6853     for c in $*; do
6854         enabled $c && printf "    &ff_%s,\n" $c >> $TMPH
6855     done
6856     echo "    NULL };" >> $TMPH
6857     cp_if_changed $TMPH $file
6858 }
6859
6860 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
6861 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
6862
6863 if test -n "$WARNINGS"; then
6864     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
6865     enabled fatal_warnings && exit 1
6866 fi
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"