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:$PATH
  58
  59 show_help(){
  60     cat <<EOF
  61 Usage: configure [options]
  62 Options: [defaults in brackets after descriptions]
  63
  64 Help options:
  65   --help                   print this message
  66   --quiet                  Suppress showing informative output
  67   --list-decoders          show all available decoders
  68   --list-encoders          show all available encoders
  69   --list-hwaccels          show all available hardware accelerators
  70   --list-demuxers          show all available demuxers
  71   --list-muxers            show all available muxers
  72   --list-parsers           show all available parsers
  73   --list-protocols         show all available protocols
  74   --list-bsfs              show all available bitstream filters
  75   --list-indevs            show all available input devices
  76   --list-outdevs           show all available output devices
  77   --list-filters           show all available filters
  78
  79 Standard options:
  80   --logfile=FILE           log tests and output to FILE [config.log]
  81   --disable-logging        do not log configure debug information
  82   --fatal-warnings         fail if any configure warning is generated
  83   --prefix=PREFIX          install in PREFIX [$prefix_default]
  84   --bindir=DIR             install binaries in DIR [PREFIX/bin]
  85   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
  86   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
  87   --libdir=DIR             install libs in DIR [PREFIX/lib]
  88   --shlibdir=DIR           install shared libs in DIR [LIBDIR]
  89   --incdir=DIR             install includes in DIR [PREFIX/include]
  90   --mandir=DIR             install man page in DIR [PREFIX/share/man]
  91   --pkgconfigdir=DIR       install pkg-config files in DIR [LIBDIR/pkgconfig]
  92   --enable-rpath           use rpath to allow installing libraries in paths
  93                            not part of the dynamic linker search path
  94                            use rpath when linking programs (USE WITH CARE)
  95   --install-name-dir=DIR   Darwin directory name for installed targets
  96
  97 Licensing options:
  98   --enable-gpl             allow use of GPL code, the resulting libs
  99                            and binaries will be under GPL [no]
 100   --enable-version3        upgrade (L)GPL to version 3 [no]
 101   --enable-nonfree         allow use of nonfree code, the resulting libs
 102                            and binaries will be unredistributable [no]
 103
 104 Configuration options:
 105   --disable-static         do not build static libraries [no]
 106   --enable-shared          build shared libraries [no]
 107   --enable-small           optimize for size instead of speed
 108   --disable-runtime-cpudetect disable detecting CPU capabilities at runtime (smaller binary)
 109   --enable-gray            enable full grayscale support (slower color)
 110   --disable-swscale-alpha  disable alpha channel support in swscale
 111   --disable-all            disable building components, libraries and programs
 112   --enable-raise-major     increase major version numbers in sonames [no]
 113
 114 Program options:
 115   --disable-programs       do not build command line programs
 116   --disable-ffmpeg         disable ffmpeg build
 117   --disable-ffplay         disable ffplay build
 118   --disable-ffprobe        disable ffprobe build
 119   --disable-ffserver       disable ffserver build
 120
 121 Documentation options:
 122   --disable-doc            do not build documentation
 123   --disable-htmlpages      do not build HTML documentation pages
 124   --disable-manpages       do not build man documentation pages
 125   --disable-podpages       do not build POD documentation pages
 126   --disable-txtpages       do not build text documentation pages
 127
 128 Component options:
 129   --disable-avdevice       disable libavdevice build
 130   --disable-avcodec        disable libavcodec build
 131   --disable-avformat       disable libavformat build
 132   --disable-swresample     disable libswresample build
 133   --disable-swscale        disable libswscale build
 134   --disable-postproc       disable libpostproc build
 135   --disable-avfilter       disable libavfilter build
 136   --enable-avresample      enable libavresample build [no]
 137   --disable-pthreads       disable pthreads [autodetect]
 138   --disable-w32threads     disable Win32 threads [autodetect]
 139   --disable-os2threads     disable OS/2 threads [autodetect]
 140   --disable-network        disable network support [no]
 141   --disable-dct            disable DCT code
 142   --disable-dwt            disable DWT code
 143   --disable-error-resilience disable error resilience code
 144   --disable-lsp            disable LSP code
 145   --disable-lzo            disable LZO decoder code
 146   --disable-mdct           disable MDCT code
 147   --disable-rdft           disable RDFT code
 148   --disable-fft            disable FFT code
 149   --disable-faan           disable floating point AAN (I)DCT code
 150   --disable-pixelutils     disable pixel utils in libavutil
 151
 152 Individual component options:
 153   --disable-everything     disable all components listed below
 154   --disable-encoder=NAME   disable encoder NAME
 155   --enable-encoder=NAME    enable encoder NAME
 156   --disable-encoders       disable all encoders
 157   --disable-decoder=NAME   disable decoder NAME
 158   --enable-decoder=NAME    enable decoder NAME
 159   --disable-decoders       disable all decoders
 160   --disable-hwaccel=NAME   disable hwaccel NAME
 161   --enable-hwaccel=NAME    enable hwaccel NAME
 162   --disable-hwaccels       disable all hwaccels
 163   --disable-muxer=NAME     disable muxer NAME
 164   --enable-muxer=NAME      enable muxer NAME
 165   --disable-muxers         disable all muxers
 166   --disable-demuxer=NAME   disable demuxer NAME
 167   --enable-demuxer=NAME    enable demuxer NAME
 168   --disable-demuxers       disable all demuxers
 169   --enable-parser=NAME     enable parser NAME
 170   --disable-parser=NAME    disable parser NAME
 171   --disable-parsers        disable all parsers
 172   --enable-bsf=NAME        enable bitstream filter NAME
 173   --disable-bsf=NAME       disable bitstream filter NAME
 174   --disable-bsfs           disable all bitstream filters
 175   --enable-protocol=NAME   enable protocol NAME
 176   --disable-protocol=NAME  disable protocol NAME
 177   --disable-protocols      disable all protocols
 178   --enable-indev=NAME      enable input device NAME
 179   --disable-indev=NAME     disable input device NAME
 180   --disable-indevs         disable input devices
 181   --enable-outdev=NAME     enable output device NAME
 182   --disable-outdev=NAME    disable output device NAME
 183   --disable-outdevs        disable output devices
 184   --disable-devices        disable all devices
 185   --enable-filter=NAME     enable filter NAME
 186   --disable-filter=NAME    disable filter NAME
 187   --disable-filters        disable all filters
 188
 189 External library support:
 190
 191   Using any of the following switches will allow FFmpeg to link to the
 192   corresponding external library. All the components depending on that library
 193   will become enabled, if all their other dependencies are met and they are not
 194   explicitly disabled. E.g. --enable-libwavpack will enable linking to
 195   libwavpack and allow the libwavpack encoder to be built, unless it is
 196   specifically disabled with --disable-encoder=libwavpack.
 197
 198   Note that only the system libraries are auto-detected. All the other external
 199   libraries must be explicitly enabled.
 200
 201   Also note that the following help text describes the purpose of the libraries
 202   themselves, not all their features will necessarily be usable by FFmpeg.
 203
 204   --enable-avisynth        enable reading of AviSynth script files [no]
 205   --disable-bzlib          disable bzlib [autodetect]
 206   --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
 207   --enable-frei0r          enable frei0r video filtering [no]
 208   --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
 209                            if openssl, librtmp or gmp is not used [no]
 210   --enable-gmp             enable gmp, needed for rtmp(t)e support
 211                            if openssl or librtmp is not used [no]
 212   --enable-gnutls          enable gnutls, needed for https support
 213                            if openssl is not used [no]
 214   --disable-iconv          disable iconv [autodetect]
 215   --enable-jni             enable JNI support [no]
 216   --enable-ladspa          enable LADSPA audio filtering [no]
 217   --enable-libass          enable libass subtitles rendering,
 218                            needed for subtitles and ass filter [no]
 219   --enable-libbluray       enable BluRay reading using libbluray [no]
 220   --enable-libbs2b         enable bs2b DSP library [no]
 221   --enable-libcaca         enable textual display using libcaca [no]
 222   --enable-libcelt         enable CELT decoding via libcelt [no]
 223   --enable-libcdio         enable audio CD grabbing with libcdio [no]
 224   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 225                            and libraw1394 [no]
 226   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 227   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 228   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
 229   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
 230   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
 231   --enable-libgme          enable Game Music Emu via libgme [no]
 232   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 233   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 234   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 235   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
 236   --enable-libmodplug      enable ModPlug via libmodplug [no]
 237   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 238   --enable-libnut          enable NUT (de)muxing via libnut,
 239                            native (de)muxer exists [no]
 240   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 241   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 242   --enable-libopencv       enable video filtering via libopencv [no]
 243   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 244   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 245   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
 246   --enable-libopus         enable Opus de/encoding via libopus [no]
 247   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 248   --enable-librubberband   enable rubberband needed for rubberband filter [no]
 249   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 250   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
 251   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 252   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 253   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
 254   --enable-libsoxr         enable Include libsoxr resampling [no]
 255   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 256   --enable-libssh          enable SFTP protocol via libssh [no]
 257   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
 258   --enable-libtheora       enable Theora encoding via libtheora [no]
 259   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 260   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 261   --enable-libvidstab      enable video stabilization using vid.stab [no]
 262   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 263   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 264                            native implementation exists [no]
 265   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 266   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 267   --enable-libwebp         enable WebP encoding via libwebp [no]
 268   --enable-libx264         enable H.264 encoding via x264 [no]
 269   --enable-libx265         enable HEVC encoding via x265 [no]
 270   --enable-libxavs         enable AVS encoding via xavs [no]
 271   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
 272   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
 273   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
 274   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
 275   --enable-libxvid         enable Xvid encoding via xvidcore,
 276                            native MPEG-4/Xvid encoder exists [no]
 277   --enable-libzimg         enable z.lib, needed for zscale filter [no]
 278   --enable-libzmq          enable message passing via libzmq [no]
 279   --enable-libzvbi         enable teletext support via libzvbi [no]
 280   --disable-lzma           disable lzma [autodetect]
 281   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
 282   --enable-mediacodec      enable Android MediaCodec support [no]
 283   --enable-netcdf          enable NetCDF, needed for sofalizer filter [no]
 284   --enable-openal          enable OpenAL 1.1 capture support [no]
 285   --enable-opencl          enable OpenCL code
 286   --enable-opengl          enable OpenGL rendering [no]
 287   --enable-openssl         enable openssl, needed for https support
 288                            if gnutls is not used [no]
 289   --disable-schannel       disable SChannel SSP, needed for TLS support on
 290                            Windows if openssl and gnutls are not used [autodetect]
 291   --disable-sdl2           disable sdl2 [autodetect]
 292   --disable-securetransport disable Secure Transport, needed for TLS support
 293                            on OSX if openssl and gnutls are not used [autodetect]
 294   --disable-xlib           disable xlib [autodetect]
 295   --disable-zlib           disable zlib [autodetect]
 296
 297   The following libraries provide various hardware acceleration features:
 298   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
 299   --disable-cuda           disable dynamically linked Nvidia CUDA code [autodetect]
 300   --disable-cuvid          disable Nvidia CUVID support [autodetect]
 301   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
 302   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
 303   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
 304   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
 305   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
 306   --disable-nvenc          disable Nvidia video encoding code [autodetect]
 307   --enable-omx             enable OpenMAX IL code [no]
 308   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
 309   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
 310   --disable-vda            disable Apple Video Decode Acceleration code [autodetect]
 311   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
 312   --disable-videotoolbox   disable VideoToolbox code [autodetect]
 313
 314 Toolchain options:
 315   --arch=ARCH              select architecture [$arch]
 316   --cpu=CPU                select the minimum required CPU (affects
 317                            instruction selection, may crash on older CPUs)
 318   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 319   --progs-suffix=SUFFIX    program name suffix []
 320   --enable-cross-compile   assume a cross-compiler is used
 321   --sysroot=PATH           root of cross-build tree
 322   --sysinclude=PATH        location of cross-build system headers
 323   --target-os=OS           compiler targets OS [$target_os]
 324   --target-exec=CMD        command to run executables on target
 325   --target-path=DIR        path to view of build directory on target
 326   --target-samples=DIR     path to samples directory on target
 327   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 328   --toolchain=NAME         set tool defaults according to NAME
 329   --nm=NM                  use nm tool NM [$nm_default]
 330   --ar=AR                  use archive tool AR [$ar_default]
 331   --as=AS                  use assembler AS [$as_default]
 332   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
 333   --strip=STRIP            use strip tool STRIP [$strip_default]
 334   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 335   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
 336   --cc=CC                  use C compiler CC [$cc_default]
 337   --cxx=CXX                use C compiler CXX [$cxx_default]
 338   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 339   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 340   --ld=LD                  use linker LD [$ld_default]
 341   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 342   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 343   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 344   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 345   --host-cc=HOSTCC         use host C compiler HOSTCC
 346   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 347   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 348   --host-ld=HOSTLD         use host linker HOSTLD
 349   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 350   --host-libs=HLIBS        use libs HLIBS when linking for host
 351   --host-os=OS             compiler host OS [$target_os]
 352   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 353   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 354   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 355   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 356   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 357   --extra-ldlibflags=ELDFLAGS add ELDFLAGS to LDLIBFLAGS [$LDLIBFLAGS]
 358   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 359   --extra-version=STRING   version string suffix []
 360   --optflags=OPTFLAGS      override optimization-related compiler flags
 361   --build-suffix=SUFFIX    library name suffix []
 362   --enable-pic             build position-independent code
 363   --enable-thumb           compile for Thumb instruction set
 364   --enable-lto             use link-time optimization
 365   --env="ENV=override"     override the environment variables
 366
 367 Advanced options (experts only):
 368   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 369   --custom-allocator=NAME  use a supported custom allocator
 370   --disable-symver         disable symbol versioning
 371   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 372   --disable-safe-bitstream-reader
 373                            disable buffer boundary checking in bitreaders
 374                            (faster, but may crash)
 375   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 376
 377 Optimization options (experts only):
 378   --disable-asm            disable all assembly optimizations
 379   --disable-altivec        disable AltiVec optimizations
 380   --disable-vsx            disable VSX optimizations
 381   --disable-power8         disable POWER8 optimizations
 382   --disable-amd3dnow       disable 3DNow! optimizations
 383   --disable-amd3dnowext    disable 3DNow! extended optimizations
 384   --disable-mmx            disable MMX optimizations
 385   --disable-mmxext         disable MMXEXT optimizations
 386   --disable-sse            disable SSE optimizations
 387   --disable-sse2           disable SSE2 optimizations
 388   --disable-sse3           disable SSE3 optimizations
 389   --disable-ssse3          disable SSSE3 optimizations
 390   --disable-sse4           disable SSE4 optimizations
 391   --disable-sse42          disable SSE4.2 optimizations
 392   --disable-avx            disable AVX optimizations
 393   --disable-xop            disable XOP optimizations
 394   --disable-fma3           disable FMA3 optimizations
 395   --disable-fma4           disable FMA4 optimizations
 396   --disable-avx2           disable AVX2 optimizations
 397   --disable-aesni          disable AESNI optimizations
 398   --disable-armv5te        disable armv5te optimizations
 399   --disable-armv6          disable armv6 optimizations
 400   --disable-armv6t2        disable armv6t2 optimizations
 401   --disable-vfp            disable VFP optimizations
 402   --disable-neon           disable NEON optimizations
 403   --disable-inline-asm     disable use of inline assembly
 404   --disable-yasm           disable use of nasm/yasm assembly
 405   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
 406   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 407   --disable-msa            disable MSA optimizations
 408   --disable-mipsfpu        disable floating point MIPS optimizations
 409   --disable-mmi            disable Loongson SIMD optimizations
 410   --disable-fast-unaligned consider unaligned accesses slow
 411
 412 Developer options (useful when working on FFmpeg itself):
 413   --disable-debug          disable debugging symbols
 414   --enable-debug=LEVEL     set the debug level [$debuglevel]
 415   --disable-optimizations  disable compiler optimizations
 416   --enable-extra-warnings  enable more compiler warnings
 417   --disable-stripping      disable stripping of executables and shared libraries
 418   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 419                            2 causes a slowdown at runtime.
 420   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 421   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 422                            leaks and errors, using the specified valgrind binary.
 423                            Cannot be combined with --target-exec
 424   --enable-ftrapv          Trap arithmetic overflows
 425   --samples=PATH           location of test samples for FATE, if not set use
 426                            \$FATE_SAMPLES at make invocation time.
 427   --enable-neon-clobber-test check NEON registers for clobbering (should be
 428                            used only for debugging purposes)
 429   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 430                            should be used only for debugging purposes)
 431   --enable-random          randomly enable/disable components
 432   --disable-random
 433   --enable-random=LIST     randomly enable/disable specific components or
 434   --disable-random=LIST    component groups. LIST is a comma-separated list
 435                            of NAME[:PROB] entries where NAME is a component
 436                            (group) and PROB the probability associated with
 437                            NAME (default 0.5).
 438   --random-seed=VALUE      seed value for --enable/disable-random
 439   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 440                            (only applies to --disable-optimizations builds)
 441
 442 NOTE: Object files are built at the place where configure is launched.
 443 EOF
 444   exit 0
 445 }
 446
 447 quotes='""'
 448 if test -t 1 && which tput >/dev/null 2>&1; then
 449     ncolors=$(tput colors)
 450     if test -n "$ncolors" && test $ncolors -ge 8; then
 451         bold_color=$(tput bold)
 452         warn_color=$(tput setaf 3)
 453         error_color=$(tput setaf 1)
 454         reset_color=$(tput sgr0)
 455     fi
 456     # 72 used instead of 80 since that's the default of pr
 457     ncols=$(tput cols)
 458 fi
 459 : ${ncols:=72}
 460
 461 log(){
 462     echo "$@" >> $logfile
 463 }
 464
 465 log_file(){
 466     log BEGIN $1
 467     pr -n -t $1 >> $logfile
 468     log END $1
 469 }
 470
 471 warn(){
 472     log "WARNING: $*"
 473     WARNINGS="${WARNINGS}WARNING: $*\n"
 474 }
 475
 476 die(){
 477     log "$@"
 478     echo "$error_color$bold_color$@$reset_color"
 479     cat <<EOF
 480
 481 If you think configure made a mistake, make sure you are using the latest
 482 version from Git.  If the latest version fails, report the problem to the
 483 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 484 EOF
 485     if disabled logging; then
 486         cat <<EOF
 487 Rerun configure with logging enabled (do not use --disable-logging), and
 488 include the log this produces with your report.
 489 EOF
 490     else
 491         cat <<EOF
 492 Include the log file "$logfile" produced by configure as this will help
 493 solve the problem.
 494 EOF
 495     fi
 496     exit 1
 497 }
 498
 499 # Avoid locale weirdness, besides we really just want to translate ASCII.
 500 toupper(){
 501     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 502 }
 503
 504 tolower(){
 505     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 506 }
 507
 508 c_escape(){
 509     echo "$*" | sed 's/["\\]/\\\0/g'
 510 }
 511
 512 sh_quote(){
 513     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 514     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 515     echo "$v"
 516 }
 517
 518 cleanws(){
 519     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 520 }
 521
 522 filter(){
 523     pat=$1
 524     shift
 525     for v; do
 526         eval "case $v in $pat) printf '%s ' $v ;; esac"
 527     done
 528 }
 529
 530 filter_out(){
 531     pat=$1
 532     shift
 533     for v; do
 534         eval "case $v in $pat) ;; *) printf '%s ' $v ;; esac"
 535     done
 536 }
 537
 538 map(){
 539     m=$1
 540     shift
 541     for v; do eval $m; done
 542 }
 543
 544 add_suffix(){
 545     suffix=$1
 546     shift
 547     for v; do echo ${v}${suffix}; done
 548 }
 549
 550 set_all(){
 551     value=$1
 552     shift
 553     for var in $*; do
 554         eval $var=$value
 555     done
 556 }
 557
 558 set_weak(){
 559     value=$1
 560     shift
 561     for var; do
 562         eval : \${$var:=$value}
 563     done
 564 }
 565
 566 sanitize_var_name(){
 567     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 568 }
 569
 570 set_safe(){
 571     var=$1
 572     shift
 573     eval $(sanitize_var_name "$var")='$*'
 574 }
 575
 576 get_safe(){
 577     eval echo \$$(sanitize_var_name "$1")
 578 }
 579
 580 pushvar(){
 581     for pvar in $*; do
 582         eval level=\${${pvar}_level:=0}
 583         eval ${pvar}_${level}="\$$pvar"
 584         eval ${pvar}_level=$(($level+1))
 585     done
 586 }
 587
 588 popvar(){
 589     for pvar in $*; do
 590         eval level=\${${pvar}_level:-0}
 591         test $level = 0 && continue
 592         eval level=$(($level-1))
 593         eval $pvar="\${${pvar}_${level}}"
 594         eval ${pvar}_level=$level
 595         eval unset ${pvar}_${level}
 596     done
 597 }
 598
 599 request(){
 600     for var in $*; do
 601         eval ${var}_requested=yes
 602         eval $var=
 603     done
 604 }
 605
 606 enable(){
 607     set_all yes $*
 608 }
 609
 610 disable(){
 611     set_all no $*
 612 }
 613
 614 enable_weak(){
 615     set_weak yes $*
 616 }
 617
 618 disable_weak(){
 619     set_weak no $*
 620 }
 621
 622 enable_safe(){
 623     for var; do
 624         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 625     done
 626 }
 627
 628 disable_safe(){
 629     for var; do
 630         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 631     done
 632 }
 633
 634 do_enable_deep(){
 635     for var; do
 636         enabled $var && continue
 637         eval sel="\$${var}_select"
 638         eval sgs="\$${var}_suggest"
 639         pushvar var sgs
 640         enable_deep $sel
 641         popvar sgs
 642         enable_deep_weak $sgs
 643         popvar var
 644     done
 645 }
 646
 647 enable_deep(){
 648     do_enable_deep $*
 649     enable $*
 650 }
 651
 652 enable_deep_weak(){
 653     for var; do
 654         disabled $var && continue
 655         pushvar var
 656         do_enable_deep $var
 657         popvar var
 658         enable_weak $var
 659     done
 660 }
 661
 662 requested(){
 663     test "${1#!}" = "$1" && op='=' || op=!=
 664     eval test "x\$${1#!}_requested" $op "xyes"
 665 }
 666
 667 enabled(){
 668     test "${1#!}" = "$1" && op='=' || op=!=
 669     eval test "x\$${1#!}" $op "xyes"
 670 }
 671
 672 disabled(){
 673     test "${1#!}" = "$1" && op='=' || op=!=
 674     eval test "x\$${1#!}" $op "xno"
 675 }
 676
 677 enabled_all(){
 678     for opt; do
 679         enabled $opt || return 1
 680     done
 681 }
 682
 683 disabled_all(){
 684     for opt; do
 685         disabled $opt || return 1
 686     done
 687 }
 688
 689 enabled_any(){
 690     for opt; do
 691         enabled $opt && return 0
 692     done
 693 }
 694
 695 disabled_any(){
 696     for opt; do
 697         disabled $opt && return 0
 698     done
 699     return 1
 700 }
 701
 702 set_default(){
 703     for opt; do
 704         eval : \${$opt:=\$${opt}_default}
 705     done
 706 }
 707
 708 is_in(){
 709     value=$1
 710     shift
 711     for var in $*; do
 712         [ $var = $value ] && return 0
 713     done
 714     return 1
 715 }
 716
 717 do_check_deps(){
 718     for cfg; do
 719         cfg="${cfg#!}"
 720         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 721         disabled ${cfg}_checking && continue
 722         enable ${cfg}_checking
 723         append allopts $cfg
 724
 725         eval dep_all="\$${cfg}_deps"
 726         eval dep_any="\$${cfg}_deps_any"
 727         eval dep_sel="\$${cfg}_select"
 728         eval dep_sgs="\$${cfg}_suggest"
 729         eval dep_ifa="\$${cfg}_if"
 730         eval dep_ifn="\$${cfg}_if_any"
 731
 732         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 733         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
 734         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 735
 736         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 737         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 738         enabled_all  $dep_all || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not all dependencies are satisfied: $dep_all"; }
 739         enabled_any  $dep_any || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not any dependency is satisfied: $dep_any"; }
 740         disabled_any $dep_sel && { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some selected dependency is unsatisfied: $dep_sel"; }
 741
 742         if enabled $cfg; then
 743             enable_deep $dep_sel
 744             enable_deep_weak $dep_sgs
 745         fi
 746
 747         disable ${cfg}_checking
 748     done
 749 }
 750
 751 check_deps(){
 752     unset allopts
 753
 754     do_check_deps "$@"
 755
 756     for cfg in $allopts; do
 757         enabled $cfg || continue
 758         eval dep_extralibs="\$${cfg}_extralibs"
 759         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
 760     done
 761 }
 762
 763 print_config(){
 764     pfx=$1
 765     files=$2
 766     shift 2
 767     map 'eval echo "$v \${$v:-no}"' "$@" |
 768     awk "BEGIN { split(\"$files\", files) }
 769         {
 770             c = \"$pfx\" toupper(\$1);
 771             v = \$2;
 772             sub(/yes/, 1, v);
 773             sub(/no/,  0, v);
 774             for (f in files) {
 775                 file = files[f];
 776                 if (file ~ /\\.h\$/) {
 777                     printf(\"#define %s %d\\n\", c, v) >>file;
 778                 } else if (file ~ /\\.asm\$/) {
 779                     printf(\"%%define %s %d\\n\", c, v) >>file;
 780                 } else if (file ~ /\\.mak\$/) {
 781                     n = -v ? \"\" : \"!\";
 782                     printf(\"%s%s=yes\\n\", n, c) >>file;
 783                 } else if (file ~ /\\.texi\$/) {
 784                     pre = -v ? \"\" : \"@c \";
 785                     yesno = \$2;
 786                     c2 = tolower(c);
 787                     gsub(/_/, \"-\", c2);
 788                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 789                 }
 790             }
 791         }"
 792 }
 793
 794 print_enabled(){
 795     suf=$1
 796     shift
 797     for v; do
 798         enabled $v && printf "%s\n" ${v%$suf}
 799     done
 800 }
 801
 802 append(){
 803     var=$1
 804     shift
 805     eval "$var=\"\$$var $*\""
 806 }
 807
 808 prepend(){
 809     var=$1
 810     shift
 811     eval "$var=\"$* \$$var\""
 812 }
 813
 814 unique(){
 815     var=$1
 816     uniq_list=""
 817     for tok in $(eval echo \$$var); do
 818         uniq_list="$(filter_out $tok $uniq_list) $tok"
 819     done
 820     eval "$var=\"${uniq_list}\""
 821 }
 822
 823 add_cppflags(){
 824     append CPPFLAGS "$@"
 825 }
 826
 827 add_cflags(){
 828     append CFLAGS $($cflags_filter "$@")
 829 }
 830
 831 add_cflags_headers(){
 832     append CFLAGS_HEADERS $($cflags_filter "$@")
 833 }
 834
 835 add_cxxflags(){
 836     append CXXFLAGS $($cflags_filter "$@")
 837 }
 838
 839 add_asflags(){
 840     append ASFLAGS $($asflags_filter "$@")
 841 }
 842
 843 add_objcflags(){
 844     append OBJCFLAGS $($objcflags_filter "$@")
 845 }
 846
 847 add_ldflags(){
 848     append LDFLAGS $($ldflags_filter "$@")
 849 }
 850
 851 add_ldexeflags(){
 852     append LDEXEFLAGS $($ldflags_filter "$@")
 853 }
 854
 855 add_ldlibflags(){
 856     append LDLIBFLAGS $($ldflags_filter "$@")
 857 }
 858
 859 add_stripflags(){
 860     append ASMSTRIPFLAGS "$@"
 861 }
 862
 863 add_extralibs(){
 864     prepend extralibs $($ldflags_filter "$@")
 865 }
 866
 867 add_host_cppflags(){
 868     append host_cppflags "$@"
 869 }
 870
 871 add_host_cflags(){
 872     append host_cflags $($host_cflags_filter "$@")
 873 }
 874
 875 add_host_ldflags(){
 876     append host_ldflags $($host_ldflags_filter "$@")
 877 }
 878
 879 add_compat(){
 880     append compat_objs $1
 881     shift
 882     map 'add_cppflags -D$v' "$@"
 883 }
 884
 885 check_cmd(){
 886     log "$@"
 887     "$@" >> $logfile 2>&1
 888 }
 889
 890 check_stat(){
 891     log check_stat "$@"
 892     stat "$1" >> $logfile 2>&1
 893 }
 894
 895 cc_o(){
 896     eval printf '%s\\n' $CC_O
 897 }
 898
 899 cc_e(){
 900     eval printf '%s\\n' $CC_E
 901 }
 902
 903 check_cc(){
 904     log check_cc "$@"
 905     cat > $TMPC
 906     log_file $TMPC
 907     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 908 }
 909
 910 check_cxx(){
 911     log check_cxx "$@"
 912     cat > $TMPCPP
 913     log_file $TMPCPP
 914     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 915 }
 916
 917 check_objcc(){
 918     log check_objcc "$@"
 919     cat > $TMPM
 920     log_file $TMPM
 921     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
 922 }
 923
 924 check_cpp(){
 925     log check_cpp "$@"
 926     cat > $TMPC
 927     log_file $TMPC
 928     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 929 }
 930
 931 as_o(){
 932     eval printf '%s\\n' $AS_O
 933 }
 934
 935 check_as(){
 936     log check_as "$@"
 937     cat > $TMPS
 938     log_file $TMPS
 939     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 940 }
 941
 942 check_inline_asm(){
 943     log check_inline_asm "$@"
 944     name="$1"
 945     code="$2"
 946     shift 2
 947     disable $name
 948     check_cc "$@" <<EOF && enable $name
 949 void foo(void){ __asm__ volatile($code); }
 950 EOF
 951 }
 952
 953 check_inline_asm_flags(){
 954     log check_inline_asm_flags "$@"
 955     name="$1"
 956     code="$2"
 957     flags=''
 958     shift 2
 959     while [ "$1" != "" ]; do
 960       append flags $1
 961       shift
 962     done;
 963     disable $name
 964     cat > $TMPC <<EOF
 965 void foo(void){ __asm__ volatile($code); }
 966 EOF
 967     log_file $TMPC
 968     check_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
 969     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
 970 }
 971
 972 check_insn(){
 973     log check_insn "$@"
 974     check_inline_asm ${1}_inline "\"$2\""
 975     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 976 }
 977
 978 check_yasm(){
 979     log check_yasm "$@"
 980     echo "$1" > $TMPS
 981     log_file $TMPS
 982     shift 1
 983     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
 984 }
 985
 986 ld_o(){
 987     eval printf '%s\\n' $LD_O
 988 }
 989
 990 check_ld(){
 991     log check_ld "$@"
 992     type=$1
 993     shift 1
 994     flags=$(filter_out '-l*|*.so' $@)
 995     libs=$(filter '-l*|*.so' $@)
 996     check_$type $($cflags_filter $flags) || return
 997     flags=$($ldflags_filter $flags)
 998     libs=$($ldflags_filter $libs)
 999     check_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1000 }
1001
1002 print_include(){
1003     hdr=$1
1004     test "${hdr%.h}" = "${hdr}" &&
1005         echo "#include $hdr"    ||
1006         echo "#include <$hdr>"
1007 }
1008
1009 check_code(){
1010     log check_code "$@"
1011     check=$1
1012     headers=$2
1013     code=$3
1014     shift 3
1015     {
1016         for hdr in $headers; do
1017             print_include $hdr
1018         done
1019         echo "int main(void) { $code; return 0; }"
1020     } | check_$check "$@"
1021 }
1022
1023 check_cppflags(){
1024     log check_cppflags "$@"
1025     check_cpp "$@" <<EOF && append CPPFLAGS "$@"
1026 int x;
1027 EOF
1028 }
1029
1030 test_cflags(){
1031     log test_cflags "$@"
1032     set -- $($cflags_filter "$@")
1033     check_cc "$@" <<EOF
1034 int x;
1035 EOF
1036 }
1037
1038 check_cflags(){
1039     log check_cflags "$@"
1040     test_cflags "$@" && add_cflags "$@"
1041 }
1042
1043 check_cxxflags(){
1044     log check_cxxflags "$@"
1045     set -- $($cflags_filter "$@")
1046     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
1047 int x;
1048 EOF
1049 }
1050
1051 test_objcflags(){
1052     log test_objcflags "$@"
1053     set -- $($objcflags_filter "$@")
1054     check_objcc "$@" <<EOF
1055 int x;
1056 EOF
1057 }
1058
1059 check_objcflags(){
1060     log check_objcflags "$@"
1061     test_objcflags "$@" && add_objcflags "$@"
1062 }
1063
1064 test_ldflags(){
1065     log test_ldflags "$@"
1066     check_ld "cc" "$@" <<EOF
1067 int main(void){ return 0; }
1068 EOF
1069 }
1070
1071 check_ldflags(){
1072     log check_ldflags "$@"
1073     test_ldflags "$@" && add_ldflags "$@"
1074 }
1075
1076 test_stripflags(){
1077     log test_stripflags "$@"
1078     # call check_cc to get a fresh TMPO
1079     check_cc <<EOF
1080 int main(void) { return 0; }
1081 EOF
1082     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1083 }
1084
1085 check_stripflags(){
1086     log check_stripflags "$@"
1087     test_stripflags "$@" && add_stripflags "$@"
1088 }
1089
1090 check_header(){
1091     log check_header "$@"
1092     header=$1
1093     shift
1094     disable_safe $header
1095     check_cpp "$@" <<EOF && enable_safe $header
1096 #include <$header>
1097 int x;
1098 EOF
1099 }
1100
1101 check_header_objcc(){
1102     log check_header_objcc "$@"
1103     rm -f -- "$TMPO"
1104     header=$1
1105     shift
1106     disable_safe $header
1107     {
1108        echo "#include <$header>"
1109        echo "int main(void) { return 0; }"
1110     } | check_objcc && check_stat "$TMPO" && enable_safe $headers
1111 }
1112
1113 check_func(){
1114     log check_func "$@"
1115     func=$1
1116     shift
1117     disable $func
1118     check_ld "cc" "$@" <<EOF && enable $func
1119 extern int $func();
1120 int main(void){ $func(); }
1121 EOF
1122 }
1123
1124 check_complexfunc(){
1125     log check_complexfunc "$@"
1126     func=$1
1127     narg=$2
1128     shift 2
1129     test $narg = 2 && args="f, g" || args="f * I"
1130     disable $func
1131     check_ld "cc" "$@" <<EOF && enable $func
1132 #include <complex.h>
1133 #include <math.h>
1134 float foo(complex float f, complex float g) { return $func($args); }
1135 int main(void){ return (int) foo; }
1136 EOF
1137 }
1138
1139 check_mathfunc(){
1140     log check_mathfunc "$@"
1141     func=$1
1142     narg=$2
1143     shift 2
1144     test $narg = 2 && args="f, g" || args="f"
1145     disable $func
1146     check_ld "cc" "$@" <<EOF && enable $func
1147 #include <math.h>
1148 float foo(float f, float g) { return $func($args); }
1149 int main(void){ return (int) foo; }
1150 EOF
1151 }
1152
1153 check_func_headers(){
1154     log check_func_headers "$@"
1155     headers=$1
1156     funcs=$2
1157     shift 2
1158     {
1159         for hdr in $headers; do
1160             print_include $hdr
1161         done
1162         echo "#include <stdint.h>"
1163         for func in $funcs; do
1164             echo "long check_$func(void) { return (long) $func; }"
1165         done
1166         echo "int main(void) { int ret = 0;"
1167         # LTO could optimize out the test functions without this
1168         for func in $funcs; do
1169             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1170         done
1171         echo "return ret; }"
1172     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1173 }
1174
1175 check_class_headers_cpp(){
1176     log check_class_headers_cpp "$@"
1177     headers=$1
1178     classes=$2
1179     shift 2
1180     {
1181         for hdr in $headers; do
1182             echo "#include <$hdr>"
1183         done
1184         echo "int main(void) { "
1185         i=1
1186         for class in $classes; do
1187             echo "$class obj$i;"
1188             i=$(expr $i + 1)
1189         done
1190         echo "return 0; }"
1191     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1192 }
1193
1194 check_cpp_condition(){
1195     log check_cpp_condition "$@"
1196     header=$1
1197     condition=$2
1198     shift 2
1199     check_cpp "$@" <<EOF
1200 #include <$header>
1201 #if !($condition)
1202 #error "unsatisfied condition: $condition"
1203 #endif
1204 EOF
1205 }
1206
1207 test_cflags_cc(){
1208     log test_cflags_cc "$@"
1209     flags=$1
1210     header=$2
1211     condition=$3
1212     shift 3
1213     set -- $($cflags_filter "$flags")
1214     check_cc "$@" <<EOF
1215 #include <$header>
1216 #if !($condition)
1217 #error "unsatisfied condition: $condition"
1218 #endif
1219 EOF
1220 }
1221
1222 check_lib(){
1223     log check_lib "$@"
1224     headers="$1"
1225     funcs="$2"
1226     shift 2
1227     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1228 }
1229
1230 check_lib_cpp(){
1231     log check_lib_cpp "$@"
1232     headers="$1"
1233     classes="$2"
1234     shift 2
1235     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1236 }
1237
1238 check_pkg_config(){
1239     log check_pkg_config "$@"
1240     pkg_version="$1"
1241     pkg="${1%% *}"
1242     headers="$2"
1243     funcs="$3"
1244     shift 3
1245     check_cmd $pkg_config --exists --print-errors $pkg_version || return
1246     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1247     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1248     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1249         set_safe "${pkg}_cflags"    $pkg_cflags &&
1250         set_safe "${pkg}_extralibs" $pkg_libs
1251 }
1252
1253 check_exec(){
1254     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1255 }
1256
1257 check_exec_crash(){
1258     log check_exec_crash "$@"
1259     code=$(cat)
1260
1261     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1262     # are safe but may not be available everywhere.  Thus we use
1263     # raise(SIGTERM) instead.  The check is run in a subshell so we
1264     # can redirect the "Terminated" message from the shell.  SIGBUS
1265     # is not defined by standard C so it is used conditionally.
1266
1267     (check_exec "$@") >> $logfile 2>&1 <<EOF
1268 #include <signal.h>
1269 static void sighandler(int sig){
1270     raise(SIGTERM);
1271 }
1272 int foo(void){
1273     $code
1274 }
1275 int (*func_ptr)(void) = foo;
1276 int main(void){
1277     signal(SIGILL, sighandler);
1278     signal(SIGFPE, sighandler);
1279     signal(SIGSEGV, sighandler);
1280 #ifdef SIGBUS
1281     signal(SIGBUS, sighandler);
1282 #endif
1283     return func_ptr();
1284 }
1285 EOF
1286 }
1287
1288 check_type(){
1289     log check_type "$@"
1290     headers=$1
1291     type=$2
1292     shift 2
1293     disable_safe "$type"
1294     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1295 }
1296
1297 check_struct(){
1298     log check_struct "$@"
1299     headers=$1
1300     struct=$2
1301     member=$3
1302     shift 3
1303     disable_safe "${struct}_${member}"
1304     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1305         enable_safe "${struct}_${member}"
1306 }
1307
1308 check_builtin(){
1309     log check_builtin "$@"
1310     name=$1
1311     headers=$2
1312     builtin=$3
1313     shift 3
1314     disable "$name"
1315     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1316 }
1317
1318 check_compile_assert(){
1319     log check_compile_assert "$@"
1320     name=$1
1321     headers=$2
1322     condition=$3
1323     shift 3
1324     disable "$name"
1325     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1326 }
1327
1328 require(){
1329     log require "$@"
1330     name_version="$1"
1331     headers="$2"
1332     func="$3"
1333     shift 3
1334     check_lib "$headers" $func "$@" || die "ERROR: $name_version not found"
1335 }
1336
1337 require_cpp(){
1338     name="$1"
1339     headers="$2"
1340     classes="$3"
1341     shift 3
1342     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1343 }
1344
1345 use_pkg_config(){
1346     log use_pkg_config "$@"
1347     pkg="$1"
1348     check_pkg_config "$@" || return 1
1349     add_cflags    $(get_safe "${pkg}_cflags")
1350     add_extralibs $(get_safe "${pkg}_extralibs")
1351 }
1352
1353 require_pkg_config(){
1354     use_pkg_config "$@" || die "ERROR: $pkg not found using pkg-config$pkg_config_fail_message"
1355 }
1356
1357 hostcc_e(){
1358     eval printf '%s\\n' $HOSTCC_E
1359 }
1360
1361 hostcc_o(){
1362     eval printf '%s\\n' $HOSTCC_O
1363 }
1364
1365 check_host_cc(){
1366     log check_host_cc "$@"
1367     cat > $TMPC
1368     log_file $TMPC
1369     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1370 }
1371
1372 check_host_cpp(){
1373     log check_host_cpp "$@"
1374     cat > $TMPC
1375     log_file $TMPC
1376     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1377 }
1378
1379 check_host_cppflags(){
1380     log check_host_cppflags "$@"
1381     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1382 int x;
1383 EOF
1384 }
1385
1386 check_host_cflags(){
1387     log check_host_cflags "$@"
1388     set -- $($host_cflags_filter "$@")
1389     check_host_cc "$@" <<EOF && append host_cflags "$@"
1390 int x;
1391 EOF
1392 }
1393
1394 check_host_cpp_condition(){
1395     log check_host_cpp_condition "$@"
1396     header=$1
1397     condition=$2
1398     shift 2
1399     check_host_cpp "$@" <<EOF
1400 #include <$header>
1401 #if !($condition)
1402 #error "unsatisfied condition: $condition"
1403 #endif
1404 EOF
1405 }
1406
1407 cp_if_changed(){
1408     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1409     mkdir -p "$(dirname $2)"
1410     cp -f "$1" "$2"
1411 }
1412
1413 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1414 # system-dependent things.
1415
1416 AVCODEC_COMPONENTS="
1417     bsfs
1418     decoders
1419     encoders
1420     hwaccels
1421     parsers
1422 "
1423
1424 AVDEVICE_COMPONENTS="
1425     indevs
1426     outdevs
1427 "
1428 AVFILTER_COMPONENTS="
1429     filters
1430 "
1431 AVFORMAT_COMPONENTS="
1432     demuxers
1433     muxers
1434     protocols
1435 "
1436
1437 AVRESAMPLE_COMPONENTS=""
1438 AVUTIL_COMPONENTS=""
1439
1440 COMPONENT_LIST="
1441     $AVCODEC_COMPONENTS
1442     $AVDEVICE_COMPONENTS
1443     $AVFILTER_COMPONENTS
1444     $AVFORMAT_COMPONENTS
1445     $AVRESAMPLE_COMPONENTS
1446     $AVUTIL_COMPONENTS
1447 "
1448
1449 EXAMPLE_LIST="
1450     avio_dir_cmd_example
1451     avio_reading_example
1452     decode_audio_example
1453     decode_video_example
1454     demuxing_decoding_example
1455     encode_audio_example
1456     encode_video_example
1457     extract_mvs_example
1458     filter_audio_example
1459     filtering_audio_example
1460     filtering_video_example
1461     http_multiclient_example
1462     metadata_example
1463     muxing_example
1464     qsvdec_example
1465     remuxing_example
1466     resampling_audio_example
1467     scaling_video_example
1468     transcode_aac_example
1469     transcoding_example
1470 "
1471 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1472     bzlib
1473     iconv
1474     libxcb
1475     libxcb_shm
1476     libxcb_shape
1477     libxcb_xfixes
1478     lzma
1479     schannel
1480     sdl
1481     sdl2
1482     securetransport
1483     xlib
1484     zlib
1485 "
1486
1487 EXTERNAL_LIBRARY_GPL_LIST="
1488     avisynth
1489     frei0r
1490     libcdio
1491     librubberband
1492     libvidstab
1493     libx264
1494     libx265
1495     libxavs
1496     libxvid
1497 "
1498
1499 EXTERNAL_LIBRARY_NONFREE_LIST="
1500     decklink
1501     libfdk_aac
1502     openssl
1503 "
1504
1505 EXTERNAL_LIBRARY_VERSION3_LIST="
1506     gmp
1507     libopencore_amrnb
1508     libopencore_amrwb
1509     libvo_amrwbenc
1510 "
1511
1512 EXTERNAL_LIBRARY_GPLV3_LIST="
1513     libsmbclient
1514 "
1515
1516 EXTERNAL_LIBRARY_LIST="
1517     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1518     $EXTERNAL_LIBRARY_GPL_LIST
1519     $EXTERNAL_LIBRARY_NONFREE_LIST
1520     $EXTERNAL_LIBRARY_VERSION3_LIST
1521     $EXTERNAL_LIBRARY_GPLV3_LIST
1522     chromaprint
1523     crystalhd
1524     gcrypt
1525     gnutls
1526     jni
1527     ladspa
1528     libass
1529     libbluray
1530     libbs2b
1531     libcaca
1532     libcelt
1533     libdc1394
1534     libflite
1535     libfontconfig
1536     libfreetype
1537     libfribidi
1538     libgme
1539     libgsm
1540     libiec61883
1541     libilbc
1542     libkvazaar
1543     libmodplug
1544     libmp3lame
1545     libnut
1546     libopencv
1547     libopenh264
1548     libopenjpeg
1549     libopenmpt
1550     libopus
1551     libpulse
1552     librtmp
1553     libschroedinger
1554     libshine
1555     libsmbclient
1556     libsnappy
1557     libsoxr
1558     libspeex
1559     libssh
1560     libtesseract
1561     libtheora
1562     libtwolame
1563     libv4l2
1564     libvorbis
1565     libvpx
1566     libwavpack
1567     libwebp
1568     libzimg
1569     libzmq
1570     libzvbi
1571     mediacodec
1572     netcdf
1573     openal
1574     opencl
1575     opengl
1576     videotoolbox
1577 "
1578 HWACCEL_AUTODETECT_LIBRARY_LIST="
1579     audiotoolbox
1580     cuda
1581     cuvid
1582     d3d11va
1583     dxva2
1584     nvenc
1585     vaapi
1586     vda
1587     vdpau
1588     videotoolbox_hwaccel
1589     xvmc
1590 "
1591
1592 HWACCEL_LIBRARY_NONFREE_LIST="
1593     libnpp
1594 "
1595
1596 HWACCEL_LIBRARY_LIST="
1597     $HWACCEL_AUTODETECT_LIBRARY_LIST
1598     $HWACCEL_LIBRARY_NONFREE_LIST
1599     libmfx
1600     mmal
1601     omx
1602 "
1603
1604 DOCUMENT_LIST="
1605     doc
1606     htmlpages
1607     manpages
1608     podpages
1609     txtpages
1610 "
1611
1612 FEATURE_LIST="
1613     ftrapv
1614     gray
1615     hardcoded_tables
1616     omx_rpi
1617     runtime_cpudetect
1618     safe_bitstream_reader
1619     shared
1620     small
1621     static
1622     swscale_alpha
1623 "
1624
1625 LIBRARY_LIST="
1626     avcodec
1627     avdevice
1628     avfilter
1629     avformat
1630     avresample
1631     avutil
1632     postproc
1633     swresample
1634     swscale
1635 "
1636
1637 LICENSE_LIST="
1638     gpl
1639     nonfree
1640     version3
1641 "
1642
1643 PROGRAM_LIST="
1644     ffplay
1645     ffprobe
1646     ffserver
1647     ffmpeg
1648 "
1649
1650 SUBSYSTEM_LIST="
1651     dct
1652     dwt
1653     error_resilience
1654     faan
1655     fast_unaligned
1656     fft
1657     lsp
1658     lzo
1659     mdct
1660     pixelutils
1661     network
1662     rdft
1663 "
1664
1665 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1666 CONFIG_LIST="
1667     $DOCUMENT_LIST
1668     $EXAMPLE_LIST
1669     $EXTERNAL_LIBRARY_LIST
1670     $HWACCEL_LIBRARY_LIST
1671     $FEATURE_LIST
1672     $LICENSE_LIST
1673     $LIBRARY_LIST
1674     $PROGRAM_LIST
1675     $SUBSYSTEM_LIST
1676     fontconfig
1677     memory_poisoning
1678     neon_clobber_test
1679     pic
1680     raise_major
1681     thumb
1682     valgrind_backtrace
1683     xmm_clobber_test
1684     $COMPONENT_LIST
1685 "
1686
1687 THREADS_LIST="
1688     pthreads
1689     os2threads
1690     w32threads
1691 "
1692
1693 ATOMICS_LIST="
1694     atomics_gcc
1695     atomics_suncc
1696     atomics_win32
1697 "
1698
1699 AUTODETECT_LIBS="
1700     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1701     $HWACCEL_AUTODETECT_LIBRARY_LIST
1702     $THREADS_LIST
1703 "
1704
1705 ARCH_LIST="
1706     aarch64
1707     alpha
1708     arm
1709     avr32
1710     avr32_ap
1711     avr32_uc
1712     bfin
1713     ia64
1714     m68k
1715     mips
1716     mips64
1717     parisc
1718     ppc
1719     ppc64
1720     s390
1721     sh4
1722     sparc
1723     sparc64
1724     tilegx
1725     tilepro
1726     tomi
1727     x86
1728     x86_32
1729     x86_64
1730 "
1731
1732 ARCH_EXT_LIST_ARM="
1733     armv5te
1734     armv6
1735     armv6t2
1736     armv8
1737     neon
1738     vfp
1739     vfpv3
1740     setend
1741 "
1742
1743 ARCH_EXT_LIST_MIPS="
1744     mipsfpu
1745     mips32r2
1746     mips32r5
1747     mips64r2
1748     mips32r6
1749     mips64r6
1750     mipsdsp
1751     mipsdspr2
1752     msa
1753 "
1754
1755 ARCH_EXT_LIST_LOONGSON="
1756     loongson2
1757     loongson3
1758     mmi
1759 "
1760
1761 ARCH_EXT_LIST_X86_SIMD="
1762     aesni
1763     amd3dnow
1764     amd3dnowext
1765     avx
1766     avx2
1767     fma3
1768     fma4
1769     mmx
1770     mmxext
1771     sse
1772     sse2
1773     sse3
1774     sse4
1775     sse42
1776     ssse3
1777     xop
1778 "
1779
1780 ARCH_EXT_LIST_PPC="
1781     altivec
1782     dcbzl
1783     ldbrx
1784     power8
1785     ppc4xx
1786     vsx
1787 "
1788
1789 ARCH_EXT_LIST_X86="
1790     $ARCH_EXT_LIST_X86_SIMD
1791     cpunop
1792     i686
1793 "
1794
1795 ARCH_EXT_LIST="
1796     $ARCH_EXT_LIST_ARM
1797     $ARCH_EXT_LIST_PPC
1798     $ARCH_EXT_LIST_X86
1799     $ARCH_EXT_LIST_MIPS
1800     $ARCH_EXT_LIST_LOONGSON
1801 "
1802
1803 ARCH_FEATURES="
1804     aligned_stack
1805     fast_64bit
1806     fast_clz
1807     fast_cmov
1808     local_aligned_8
1809     local_aligned_16
1810     local_aligned_32
1811     simd_align_16
1812     simd_align_32
1813 "
1814
1815 BUILTIN_LIST="
1816     atomic_cas_ptr
1817     machine_rw_barrier
1818     MemoryBarrier
1819     mm_empty
1820     rdtsc
1821     sarestart
1822     sem_timedwait
1823     sync_val_compare_and_swap
1824 "
1825 HAVE_LIST_CMDLINE="
1826     inline_asm
1827     symver
1828     yasm
1829 "
1830
1831 HAVE_LIST_PUB="
1832     bigendian
1833     fast_unaligned
1834 "
1835
1836 HEADERS_LIST="
1837     alsa_asoundlib_h
1838     altivec_h
1839     arpa_inet_h
1840     asm_types_h
1841     cdio_paranoia_h
1842     cdio_paranoia_paranoia_h
1843     cuda_h
1844     dispatch_dispatch_h
1845     dev_bktr_ioctl_bt848_h
1846     dev_bktr_ioctl_meteor_h
1847     dev_ic_bt8xx_h
1848     dev_video_bktr_ioctl_bt848_h
1849     dev_video_meteor_ioctl_meteor_h
1850     direct_h
1851     dirent_h
1852     dlfcn_h
1853     d3d11_h
1854     dxva_h
1855     ES2_gl_h
1856     gsm_h
1857     io_h
1858     mach_mach_time_h
1859     machine_ioctl_bt848_h
1860     machine_ioctl_meteor_h
1861     malloc_h
1862     opencv2_core_core_c_h
1863     openjpeg_2_1_openjpeg_h
1864     openjpeg_2_0_openjpeg_h
1865     openjpeg_1_5_openjpeg_h
1866     OpenGL_gl3_h
1867     poll_h
1868     sndio_h
1869     soundcard_h
1870     stdatomic_h
1871     sys_mman_h
1872     sys_param_h
1873     sys_resource_h
1874     sys_select_h
1875     sys_soundcard_h
1876     sys_time_h
1877     sys_un_h
1878     sys_videoio_h
1879     termios_h
1880     udplite_h
1881     unistd_h
1882     valgrind_valgrind_h
1883     windows_h
1884     winsock2_h
1885 "
1886
1887 INTRINSICS_LIST="
1888     intrinsics_neon
1889 "
1890
1891 COMPLEX_FUNCS="
1892     cabs
1893     cexp
1894 "
1895
1896 MATH_FUNCS="
1897     atanf
1898     atan2f
1899     cbrt
1900     cbrtf
1901     copysign
1902     cosf
1903     erf
1904     exp2
1905     exp2f
1906     expf
1907     hypot
1908     isfinite
1909     isinf
1910     isnan
1911     ldexpf
1912     llrint
1913     llrintf
1914     log2
1915     log2f
1916     log10f
1917     lrint
1918     lrintf
1919     powf
1920     rint
1921     round
1922     roundf
1923     sinf
1924     trunc
1925     truncf
1926 "
1927
1928 SYSTEM_FUNCS="
1929     access
1930     aligned_malloc
1931     arc4random
1932     clock_gettime
1933     closesocket
1934     CommandLineToArgvW
1935     CoTaskMemFree
1936     CryptGenRandom
1937     dlopen
1938     fcntl
1939     flt_lim
1940     fork
1941     getaddrinfo
1942     gethrtime
1943     getopt
1944     GetProcessAffinityMask
1945     GetProcessMemoryInfo
1946     GetProcessTimes
1947     getrusage
1948     GetSystemTimeAsFileTime
1949     gettimeofday
1950     glob
1951     glXGetProcAddress
1952     gmtime_r
1953     inet_aton
1954     isatty
1955     jack_port_get_latency_range
1956     kbhit
1957     LoadLibrary
1958     localtime_r
1959     lstat
1960     lzo1x_999_compress
1961     mach_absolute_time
1962     MapViewOfFile
1963     memalign
1964     mkstemp
1965     mmap
1966     mprotect
1967     nanosleep
1968     PeekNamedPipe
1969     posix_memalign
1970     pthread_cancel
1971     sched_getaffinity
1972     SetConsoleTextAttribute
1973     SetConsoleCtrlHandler
1974     setmode
1975     setrlimit
1976     Sleep
1977     strerror_r
1978     sysconf
1979     sysctl
1980     usleep
1981     UTGetOSTypeFromString
1982     VirtualAlloc
1983     wglGetProcAddress
1984 "
1985
1986 TOOLCHAIN_FEATURES="
1987     as_dn_directive
1988     as_fpu_directive
1989     as_func
1990     as_object_arch
1991     asm_mod_q
1992     attribute_may_alias
1993     attribute_packed
1994     ebp_available
1995     ebx_available
1996     gnu_as
1997     gnu_windres
1998     ibm_asm
1999     inline_asm_direct_symbol_refs
2000     inline_asm_labels
2001     inline_asm_nonlocal_labels
2002     pragma_deprecated
2003     rsync_contimeout
2004     symver_asm_label
2005     symver_gnu_asm
2006     vfp_args
2007     xform_asm
2008     xmm_clobbers
2009 "
2010
2011 TYPES_LIST="
2012     CONDITION_VARIABLE_Ptr
2013     socklen_t
2014     struct_addrinfo
2015     struct_group_source_req
2016     struct_ip_mreq_source
2017     struct_ipv6_mreq
2018     struct_msghdr_msg_flags
2019     struct_pollfd
2020     struct_rusage_ru_maxrss
2021     struct_sctp_event_subscribe
2022     struct_sockaddr_in6
2023     struct_sockaddr_sa_len
2024     struct_sockaddr_storage
2025     struct_stat_st_mtim_tv_nsec
2026     struct_v4l2_frmivalenum_discrete
2027 "
2028
2029 HAVE_LIST="
2030     $ARCH_EXT_LIST
2031     $(add_suffix _external $ARCH_EXT_LIST)
2032     $(add_suffix _inline   $ARCH_EXT_LIST)
2033     $ARCH_FEATURES
2034     $ATOMICS_LIST
2035     $BUILTIN_LIST
2036     $COMPLEX_FUNCS
2037     $HAVE_LIST_CMDLINE
2038     $HAVE_LIST_PUB
2039     $HEADERS_LIST
2040     $INTRINSICS_LIST
2041     $MATH_FUNCS
2042     $SYSTEM_FUNCS
2043     $THREADS_LIST
2044     $TOOLCHAIN_FEATURES
2045     $TYPES_LIST
2046     alsa
2047     atomics_native
2048     dos_paths
2049     dxva2_lib
2050     dxva2api_cobj
2051     jack
2052     libc_msvcrt
2053     makeinfo
2054     makeinfo_html
2055     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2056     perl
2057     pod2man
2058     sdl2
2059     section_data_rel_ro
2060     sndio
2061     texi2html
2062     threads
2063     vaapi_drm
2064     vaapi_x11
2065     vdpau_x11
2066     winrt
2067 "
2068
2069 # options emitted with CONFIG_ prefix but not available on the command line
2070 CONFIG_EXTRA="
2071     aandcttables
2072     ac3dsp
2073     audio_frame_queue
2074     audiodsp
2075     blockdsp
2076     bswapdsp
2077     cabac
2078     dirac_parse
2079     dvprofile
2080     exif
2081     faandct
2082     faanidct
2083     fdctdsp
2084     flacdsp
2085     fmtconvert
2086     frame_thread_encoder
2087     g722dsp
2088     golomb
2089     gplv3
2090     h263dsp
2091     h264chroma
2092     h264dsp
2093     h264parse
2094     h264pred
2095     h264qpel
2096     hevcparse
2097     hpeldsp
2098     huffman
2099     huffyuvdsp
2100     huffyuvencdsp
2101     idctdsp
2102     iirfilter
2103     mdct15
2104     intrax8
2105     iso_media
2106     ividsp
2107     jpegtables
2108     lgplv3
2109     libx262
2110     llauddsp
2111     llviddsp
2112     llvidencdsp
2113     lpc
2114     lzf
2115     me_cmp
2116     mpeg_er
2117     mpegaudio
2118     mpegaudiodsp
2119     mpegaudioheader
2120     mpegvideo
2121     mpegvideoenc
2122     mss34dsp
2123     pixblockdsp
2124     qpeldsp
2125     qsv
2126     qsvdec
2127     qsvenc
2128     rangecoder
2129     riffdec
2130     riffenc
2131     rtpdec
2132     rtpenc_chain
2133     rv34dsp
2134     sinewin
2135     snappy
2136     srtp
2137     startcode
2138     texturedsp
2139     texturedspenc
2140     tpeldsp
2141     vaapi_encode
2142     vc1dsp
2143     videodsp
2144     vp3dsp
2145     vp56dsp
2146     vp8dsp
2147     vt_bt2020
2148     wma_freqs
2149     wmv2dsp
2150 "
2151
2152 CMDLINE_SELECT="
2153     $ARCH_EXT_LIST
2154     $CONFIG_LIST
2155     $HAVE_LIST_CMDLINE
2156     $THREADS_LIST
2157     asm
2158     cross_compile
2159     debug
2160     extra_warnings
2161     logging
2162     lto
2163     optimizations
2164     rpath
2165     stripping
2166 "
2167
2168 PATHS_LIST="
2169     bindir
2170     datadir
2171     docdir
2172     incdir
2173     libdir
2174     mandir
2175     pkgconfigdir
2176     prefix
2177     shlibdir
2178     install_name_dir
2179 "
2180
2181 CMDLINE_SET="
2182     $PATHS_LIST
2183     ar
2184     arch
2185     as
2186     assert_level
2187     build_suffix
2188     cc
2189     objcc
2190     cpu
2191     cross_prefix
2192     custom_allocator
2193     cxx
2194     dep_cc
2195     doxygen
2196     env
2197     extra_version
2198     gas
2199     host_cc
2200     host_cflags
2201     host_extralibs
2202     host_ld
2203     host_ldflags
2204     host_os
2205     install
2206     ld
2207     ln_s
2208     logfile
2209     malloc_prefix
2210     nm
2211     optflags
2212     pkg_config
2213     pkg_config_flags
2214     progs_suffix
2215     random_seed
2216     ranlib
2217     samples
2218     strip
2219     sws_max_filter_size
2220     sysinclude
2221     sysroot
2222     target_exec
2223     target_os
2224     target_path
2225     target_samples
2226     tempprefix
2227     toolchain
2228     valgrind
2229     yasmexe
2230 "
2231
2232 CMDLINE_APPEND="
2233     extra_cflags
2234     extra_cxxflags
2235     extra_objcflags
2236     host_cppflags
2237 "
2238
2239 # code dependency declarations
2240
2241 # architecture extensions
2242
2243 armv5te_deps="arm"
2244 armv6_deps="arm"
2245 armv6t2_deps="arm"
2246 armv8_deps="aarch64"
2247 neon_deps_any="aarch64 arm"
2248 intrinsics_neon_deps="neon"
2249 vfp_deps_any="aarch64 arm"
2250 vfpv3_deps="vfp"
2251 setend_deps="arm"
2252
2253 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2254
2255 loongson2_deps="mips"
2256 loongson3_deps="mips"
2257 mipsfpu_deps="mips"
2258 mipsdsp_deps="mips"
2259 mipsdspr2_deps="mips"
2260 mips32r2_deps="mips"
2261 mips32r5_deps="mips"
2262 mips32r6_deps="mips"
2263 mips64r2_deps="mips"
2264 mips64r6_deps="mips"
2265 msa_deps="mipsfpu"
2266 mmi_deps="mips"
2267
2268 altivec_deps="ppc"
2269 dcbzl_deps="ppc"
2270 ldbrx_deps="ppc"
2271 ppc4xx_deps="ppc"
2272 vsx_deps="altivec"
2273 power8_deps="vsx"
2274
2275 cpunop_deps="i686"
2276 x86_64_select="i686"
2277 x86_64_suggest="fast_cmov"
2278
2279 amd3dnow_deps="mmx"
2280 amd3dnowext_deps="amd3dnow"
2281 i686_deps="x86"
2282 mmx_deps="x86"
2283 mmxext_deps="mmx"
2284 sse_deps="mmxext"
2285 sse2_deps="sse"
2286 sse3_deps="sse2"
2287 ssse3_deps="sse3"
2288 sse4_deps="ssse3"
2289 sse42_deps="sse4"
2290 aesni_deps="sse42"
2291 avx_deps="sse42"
2292 xop_deps="avx"
2293 fma3_deps="avx"
2294 fma4_deps="avx"
2295 avx2_deps="avx"
2296
2297 mmx_external_deps="yasm"
2298 mmx_inline_deps="inline_asm"
2299 mmx_suggest="mmx_external mmx_inline"
2300
2301 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2302     eval dep=\$${ext}_deps
2303     eval ${ext}_external_deps='"${dep}_external"'
2304     eval ${ext}_inline_deps='"${dep}_inline"'
2305     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2306 done
2307
2308 aligned_stack_if_any="aarch64 ppc x86"
2309 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2310 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2311 fast_unaligned_if_any="aarch64 ppc x86"
2312 simd_align_16_if_any="altivec neon sse"
2313 simd_align_32_if_any="avx"
2314
2315 # system capabilities
2316 symver_if_any="symver_asm_label symver_gnu_asm"
2317 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
2318
2319 # threading support
2320 atomics_gcc_if="sync_val_compare_and_swap"
2321 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2322 atomics_win32_if="MemoryBarrier"
2323 atomics_native_if_any="$ATOMICS_LIST"
2324 w32threads_deps="atomics_native"
2325 threads_if_any="$THREADS_LIST"
2326
2327 # subsystems
2328 dct_select="rdft"
2329 dirac_parse_select="golomb"
2330 error_resilience_select="me_cmp"
2331 faandct_deps="faan fdctdsp"
2332 faanidct_deps="faan idctdsp"
2333 h264dsp_select="startcode"
2334 hevcparse_select="golomb"
2335 frame_thread_encoder_deps="encoders threads"
2336 intrax8_select="blockdsp idctdsp"
2337 mdct_select="fft"
2338 mdct15_select="fft"
2339 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2340 mpeg_er_select="error_resilience"
2341 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2342 mpegaudiodsp_select="dct"
2343 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2344 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2345 vc1dsp_select="h264chroma qpeldsp startcode"
2346 rdft_select="fft"
2347
2348 # decoders / encoders
2349 aac_decoder_select="mdct15 mdct sinewin"
2350 aac_fixed_decoder_select="mdct sinewin"
2351 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2352 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2353 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2354 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2355 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2356 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2357 adpcm_g722_decoder_select="g722dsp"
2358 adpcm_g722_encoder_select="g722dsp"
2359 aic_decoder_select="golomb idctdsp"
2360 alac_encoder_select="lpc"
2361 als_decoder_select="bswapdsp"
2362 amrnb_decoder_select="lsp"
2363 amrwb_decoder_select="lsp"
2364 amv_decoder_select="sp5x_decoder exif"
2365 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2366 ape_decoder_select="bswapdsp llauddsp"
2367 apng_decoder_select="zlib"
2368 apng_encoder_select="llvidencdsp zlib"
2369 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2370 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2371 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2372 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2373 atrac1_decoder_select="mdct sinewin"
2374 atrac3_decoder_select="mdct"
2375 atrac3p_decoder_select="mdct sinewin"
2376 avrn_decoder_select="exif jpegtables"
2377 bink_decoder_select="blockdsp hpeldsp"
2378 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2379 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2380 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2381 cllc_decoder_select="bswapdsp"
2382 comfortnoise_encoder_select="lpc"
2383 cook_decoder_select="audiodsp mdct sinewin"
2384 cscd_decoder_select="lzo"
2385 cscd_decoder_suggest="zlib"
2386 dca_decoder_select="mdct"
2387 dds_decoder_select="texturedsp"
2388 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2389 dnxhd_decoder_select="blockdsp idctdsp"
2390 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2391 dvvideo_decoder_select="dvprofile idctdsp"
2392 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2393 dxa_decoder_select="zlib"
2394 dxv_decoder_select="lzf texturedsp"
2395 eac3_decoder_select="ac3_decoder"
2396 eac3_encoder_select="ac3_encoder"
2397 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2398 eatgq_decoder_select="aandcttables"
2399 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2400 exr_decoder_select="zlib"
2401 ffv1_decoder_select="rangecoder"
2402 ffv1_encoder_select="rangecoder"
2403 ffvhuff_decoder_select="huffyuv_decoder"
2404 ffvhuff_encoder_select="huffyuv_encoder"
2405 fic_decoder_select="golomb"
2406 flac_decoder_select="flacdsp"
2407 flac_encoder_select="bswapdsp flacdsp lpc"
2408 flashsv2_decoder_select="zlib"
2409 flashsv2_encoder_select="zlib"
2410 flashsv_decoder_select="zlib"
2411 flashsv_encoder_select="zlib"
2412 flv_decoder_select="h263_decoder"
2413 flv_encoder_select="h263_encoder"
2414 fourxm_decoder_select="blockdsp bswapdsp"
2415 fraps_decoder_select="bswapdsp huffman"
2416 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2417 g729_decoder_select="audiodsp"
2418 h261_decoder_select="mpegvideo"
2419 h261_encoder_select="aandcttables mpegvideoenc"
2420 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2421 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2422 h263i_decoder_select="h263_decoder"
2423 h263p_decoder_select="h263_decoder"
2424 h263p_encoder_select="h263_encoder"
2425 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2426 h264_decoder_suggest="error_resilience"
2427 hap_decoder_select="snappy texturedsp"
2428 hap_encoder_deps="libsnappy"
2429 hap_encoder_select="texturedspenc"
2430 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2431 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2432 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2433 iac_decoder_select="imc_decoder"
2434 imc_decoder_select="bswapdsp fft mdct sinewin"
2435 indeo3_decoder_select="hpeldsp"
2436 indeo4_decoder_select="ividsp"
2437 indeo5_decoder_select="ividsp"
2438 interplay_video_decoder_select="hpeldsp"
2439 jpegls_decoder_select="mjpeg_decoder"
2440 jv_decoder_select="blockdsp"
2441 lagarith_decoder_select="llviddsp"
2442 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2443 magicyuv_decoder_select="llviddsp"
2444 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2445 metasound_decoder_select="lsp mdct sinewin"
2446 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2447 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2448 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2449 mjpegb_decoder_select="mjpeg_decoder"
2450 mlp_decoder_select="mlp_parser"
2451 motionpixels_decoder_select="bswapdsp"
2452 mp1_decoder_select="mpegaudio"
2453 mp1float_decoder_select="mpegaudio"
2454 mp2_decoder_select="mpegaudio"
2455 mp2float_decoder_select="mpegaudio"
2456 mp3_decoder_select="mpegaudio"
2457 mp3adu_decoder_select="mpegaudio"
2458 mp3adufloat_decoder_select="mpegaudio"
2459 mp3float_decoder_select="mpegaudio"
2460 mp3on4_decoder_select="mpegaudio"
2461 mp3on4float_decoder_select="mpegaudio"
2462 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2463 mpc8_decoder_select="mpegaudiodsp"
2464 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2465 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2466 mpegvideo_decoder_select="mpegvideo"
2467 mpeg1video_decoder_select="mpegvideo"
2468 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2469 mpeg2video_decoder_select="mpegvideo"
2470 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2471 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2472 mpeg4_encoder_select="h263_encoder"
2473 msa1_decoder_select="mss34dsp"
2474 msmpeg4v1_decoder_select="h263_decoder"
2475 msmpeg4v2_decoder_select="h263_decoder"
2476 msmpeg4v2_encoder_select="h263_encoder"
2477 msmpeg4v3_decoder_select="h263_decoder"
2478 msmpeg4v3_encoder_select="h263_encoder"
2479 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2480 mts2_decoder_select="mss34dsp"
2481 mxpeg_decoder_select="mjpeg_decoder"
2482 nellymoser_decoder_select="mdct sinewin"
2483 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2484 nuv_decoder_select="idctdsp lzo"
2485 on2avc_decoder_select="mdct"
2486 opus_decoder_deps="swresample"
2487 opus_decoder_select="mdct15"
2488 opus_encoder_select="audio_frame_queue mdct15"
2489 png_decoder_select="zlib"
2490 png_encoder_select="llvidencdsp zlib"
2491 prores_decoder_select="blockdsp idctdsp"
2492 prores_encoder_select="fdctdsp"
2493 qcelp_decoder_select="lsp"
2494 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2495 ra_144_decoder_select="audiodsp"
2496 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2497 ralf_decoder_select="golomb"
2498 rawvideo_decoder_select="bswapdsp"
2499 rscc_decoder_select="zlib"
2500 rtjpeg_decoder_select="me_cmp"
2501 rv10_decoder_select="h263_decoder"
2502 rv10_encoder_select="h263_encoder"
2503 rv20_decoder_select="h263_decoder"
2504 rv20_encoder_select="h263_encoder"
2505 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2506 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2507 screenpresso_decoder_select="zlib"
2508 shorten_decoder_select="bswapdsp"
2509 sipr_decoder_select="lsp"
2510 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2511 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2512 sonic_decoder_select="golomb rangecoder"
2513 sonic_encoder_select="golomb rangecoder"
2514 sonic_ls_encoder_select="golomb rangecoder"
2515 sp5x_decoder_select="mjpeg_decoder"
2516 svq1_decoder_select="hpeldsp"
2517 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2518 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2519 svq3_decoder_suggest="zlib"
2520 tak_decoder_select="audiodsp"
2521 tdsc_decoder_select="zlib mjpeg_decoder"
2522 theora_decoder_select="vp3_decoder"
2523 thp_decoder_select="mjpeg_decoder"
2524 tiff_decoder_suggest="zlib lzma"
2525 tiff_encoder_suggest="zlib"
2526 truehd_decoder_select="mlp_parser"
2527 truemotion2_decoder_select="bswapdsp"
2528 truespeech_decoder_select="bswapdsp"
2529 tscc_decoder_select="zlib"
2530 twinvq_decoder_select="mdct lsp sinewin"
2531 txd_decoder_select="texturedsp"
2532 utvideo_decoder_select="bswapdsp llviddsp"
2533 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2534 vble_decoder_select="llviddsp"
2535 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2536 vc1_qsv_decoder_deps="libmfx"
2537 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2538 vc1image_decoder_select="vc1_decoder"
2539 vorbis_decoder_select="mdct"
2540 vorbis_encoder_select="mdct"
2541 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2542 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2543 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2544 vp6a_decoder_select="vp6_decoder"
2545 vp6f_decoder_select="vp6_decoder"
2546 vp7_decoder_select="h264pred videodsp vp8dsp"
2547 vp8_decoder_select="h264pred videodsp vp8dsp"
2548 vp9_decoder_select="videodsp vp9_parser"
2549 webp_decoder_select="vp8_decoder exif"
2550 wmalossless_decoder_select="llauddsp"
2551 wmapro_decoder_select="mdct sinewin wma_freqs"
2552 wmav1_decoder_select="mdct sinewin wma_freqs"
2553 wmav1_encoder_select="mdct sinewin wma_freqs"
2554 wmav2_decoder_select="mdct sinewin wma_freqs"
2555 wmav2_encoder_select="mdct sinewin wma_freqs"
2556 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2557 wmv1_decoder_select="h263_decoder"
2558 wmv1_encoder_select="h263_encoder"
2559 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2560 wmv2_encoder_select="h263_encoder wmv2dsp"
2561 wmv3_decoder_select="vc1_decoder"
2562 wmv3image_decoder_select="wmv3_decoder"
2563 xma1_decoder_select="wmapro_decoder"
2564 xma2_decoder_select="wmapro_decoder"
2565 zerocodec_decoder_select="zlib"
2566 zlib_decoder_select="zlib"
2567 zlib_encoder_select="zlib"
2568 zmbv_decoder_select="zlib"
2569 zmbv_encoder_select="zlib"
2570
2571 # platform codecs
2572 audiotoolbox_deps="AudioToolbox_AudioToolbox_h"
2573 audiotoolbox_extralibs="-framework CoreFoundation -framework AudioToolbox -framework CoreMedia"
2574
2575 # hardware accelerators
2576 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2577 cuda_deps_any="dlopen LoadLibrary"
2578 cuvid_deps="cuda"
2579 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2580 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2581 dxva2_extralibs="-luser32"
2582 vda_framework_deps="VideoDecodeAcceleration_VDADecoder_h"
2583 vda_framework_extralibs="-framework VideoDecodeAcceleration"
2584 vda_deps="vda_framework pthreads"
2585 vda_extralibs="-framework CoreFoundation -framework QuartzCore"
2586 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2587 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2588 xvmc_deps="X11_extensions_XvMClib_h"
2589
2590 h263_vaapi_hwaccel_deps="vaapi"
2591 h263_vaapi_hwaccel_select="h263_decoder"
2592 h263_videotoolbox_hwaccel_deps="videotoolbox"
2593 h263_videotoolbox_hwaccel_select="h263_decoder"
2594 h264_cuvid_hwaccel_deps="cuda cuvid"
2595 h264_cuvid_hwaccel_select="h264_cuvid_decoder"
2596 h264_d3d11va_hwaccel_deps="d3d11va"
2597 h264_d3d11va_hwaccel_select="h264_decoder"
2598 h264_dxva2_hwaccel_deps="dxva2"
2599 h264_dxva2_hwaccel_select="h264_decoder"
2600 h264_mediacodec_hwaccel_deps="mediacodec"
2601 h264_mmal_hwaccel_deps="mmal"
2602 h264_qsv_hwaccel_deps="libmfx"
2603 h264_vaapi_hwaccel_deps="vaapi"
2604 h264_vaapi_hwaccel_select="h264_decoder"
2605 h264_vda_hwaccel_deps="vda"
2606 h264_vda_hwaccel_select="h264_decoder"
2607 h264_vda_old_hwaccel_deps="vda"
2608 h264_vda_old_hwaccel_select="h264_decoder"
2609 h264_vdpau_hwaccel_deps="vdpau"
2610 h264_vdpau_hwaccel_select="h264_decoder"
2611 h264_videotoolbox_hwaccel_deps="videotoolbox"
2612 h264_videotoolbox_hwaccel_select="h264_decoder"
2613 hevc_cuvid_hwaccel_deps="cuda cuvid"
2614 hevc_cuvid_hwaccel_select="hevc_cuvid_decoder"
2615 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2616 hevc_d3d11va_hwaccel_select="hevc_decoder"
2617 hevc_mediacodec_hwaccel_deps="mediacodec"
2618 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2619 hevc_dxva2_hwaccel_select="hevc_decoder"
2620 hevc_qsv_hwaccel_deps="libmfx"
2621 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2622 hevc_vaapi_hwaccel_select="hevc_decoder"
2623 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2624 hevc_vdpau_hwaccel_select="hevc_decoder"
2625 mjpeg_cuvid_hwaccel_deps="cuda cuvid"
2626 mjpeg_cuvid_hwaccel_select="mjpeg_cuvid_decoder"
2627 mpeg_xvmc_hwaccel_deps="xvmc"
2628 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2629 mpeg1_cuvid_hwaccel_deps="cuda cuvid"
2630 mpeg1_cuvid_hwaccel_select="mpeg1_cuvid_decoder"
2631 mpeg1_vdpau_hwaccel_deps="vdpau"
2632 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2633 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2634 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2635 mpeg1_xvmc_hwaccel_deps="xvmc"
2636 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2637 mpeg2_cuvid_hwaccel_deps="cuda cuvid"
2638 mpeg2_cuvid_hwaccel_select="mpeg2_cuvid_decoder"
2639 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2640 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2641 mpeg2_dxva2_hwaccel_deps="dxva2"
2642 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2643 mpeg2_mmal_hwaccel_deps="mmal"
2644 mpeg2_qsv_hwaccel_deps="libmfx"
2645 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2646 mpeg2_vaapi_hwaccel_deps="vaapi"
2647 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2648 mpeg2_vdpau_hwaccel_deps="vdpau"
2649 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2650 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2651 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2652 mpeg2_xvmc_hwaccel_deps="xvmc"
2653 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2654 mpeg4_cuvid_hwaccel_deps="cuda cuvid"
2655 mpeg4_cuvid_hwaccel_select="mpeg4_cuvid_decoder"
2656 mpeg4_mediacodec_hwaccel_deps="mediacodec"
2657 mpeg4_mmal_hwaccel_deps="mmal"
2658 mpeg4_vaapi_hwaccel_deps="vaapi"
2659 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2660 mpeg4_vdpau_hwaccel_deps="vdpau"
2661 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2662 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2663 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2664 vc1_cuvid_hwaccel_deps="cuda cuvid"
2665 vc1_cuvid_hwaccel_select="vc1_cuvid_decoder"
2666 vc1_d3d11va_hwaccel_deps="d3d11va"
2667 vc1_d3d11va_hwaccel_select="vc1_decoder"
2668 vc1_dxva2_hwaccel_deps="dxva2"
2669 vc1_dxva2_hwaccel_select="vc1_decoder"
2670 vc1_mmal_hwaccel_deps="mmal"
2671 vc1_qsv_hwaccel_deps="libmfx"
2672 vc1_qsv_hwaccel_select="qsvdec_vc1"
2673 vc1_vaapi_hwaccel_deps="vaapi"
2674 vc1_vaapi_hwaccel_select="vc1_decoder"
2675 vc1_vdpau_hwaccel_deps="vdpau"
2676 vc1_vdpau_hwaccel_select="vc1_decoder"
2677 vp8_cuvid_hwaccel_deps="cuda cuvid"
2678 vp8_cuvid_hwaccel_select="vp8_cuvid_decoder"
2679 vp9_cuvid_hwaccel_deps="cuda cuvid"
2680 vp9_cuvid_hwaccel_select="vp9_cuvid_decoder"
2681 vp8_mediacodec_hwaccel_deps="mediacodec"
2682 vp8_qsv_hwaccel_deps="libmfx"
2683 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2684 vp9_d3d11va_hwaccel_select="vp9_decoder"
2685 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2686 vp9_dxva2_hwaccel_select="vp9_decoder"
2687 vp9_mediacodec_hwaccel_deps="mediacodec"
2688 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2689 vp9_vaapi_hwaccel_select="vp9_decoder"
2690 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2691 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2692 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2693 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2694
2695 # hardware-accelerated codecs
2696 omx_deps="dlopen pthreads"
2697 omx_extralibs='$ldl'
2698 omx_rpi_select="omx"
2699 qsvdec_select="qsv"
2700 qsvenc_select="qsv"
2701 vaapi_encode_deps="vaapi"
2702
2703 hwupload_cuda_filter_deps="cuda"
2704 scale_npp_filter_deps="cuda libnpp"
2705
2706 nvenc_deps="cuda"
2707 nvenc_deps_any="dlopen LoadLibrary"
2708 nvenc_encoder_deps="nvenc"
2709
2710 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2711 h264_cuvid_decoder_deps="cuda cuvid"
2712 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2713 h264_mediacodec_decoder_deps="mediacodec"
2714 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2715 h264_mmal_decoder_deps="mmal"
2716 h264_nvenc_encoder_deps="nvenc"
2717 h264_omx_encoder_deps="omx"
2718 h264_qsv_decoder_deps="libmfx"
2719 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2720 h264_qsv_encoder_deps="libmfx"
2721 h264_qsv_encoder_select="qsvenc"
2722 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2723 h264_vaapi_encoder_select="vaapi_encode golomb"
2724 h264_vda_decoder_deps="vda"
2725 h264_vda_decoder_select="h264_decoder"
2726 h264_vdpau_decoder_deps="vdpau"
2727 h264_vdpau_decoder_select="h264_decoder"
2728 hevc_cuvid_decoder_deps="cuda cuvid"
2729 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2730 hevc_mediacodec_decoder_deps="mediacodec"
2731 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2732 hevc_nvenc_encoder_deps="nvenc"
2733 hevc_qsv_decoder_deps="libmfx"
2734 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2735 hevc_qsv_encoder_deps="libmfx"
2736 hevc_qsv_encoder_select="hevcparse qsvenc"
2737 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2738 hevc_vaapi_encoder_select="vaapi_encode golomb"
2739 mjpeg_cuvid_decoder_deps="cuda cuvid"
2740 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2741 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2742 mpeg1_cuvid_decoder_deps="cuda cuvid"
2743 mpeg1_vdpau_decoder_deps="vdpau"
2744 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2745 mpeg2_crystalhd_decoder_select="crystalhd"
2746 mpeg2_cuvid_decoder_deps="cuda cuvid"
2747 mpeg2_mmal_decoder_deps="mmal"
2748 mpeg2_qsv_decoder_deps="libmfx"
2749 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2750 mpeg2_qsv_encoder_deps="libmfx"
2751 mpeg2_qsv_encoder_select="qsvenc"
2752 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2753 mpeg2_vaapi_encoder_select="vaapi_encode"
2754 mpeg4_crystalhd_decoder_select="crystalhd"
2755 mpeg4_cuvid_decoder_deps="cuda cuvid"
2756 mpeg4_mediacodec_decoder_deps="mediacodec"
2757 mpeg4_mmal_decoder_deps="mmal"
2758 mpeg4_omx_encoder_deps="omx"
2759 mpeg4_vdpau_decoder_deps="vdpau"
2760 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2761 mpeg_vdpau_decoder_deps="vdpau"
2762 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2763 msmpeg4_crystalhd_decoder_select="crystalhd"
2764 nvenc_h264_encoder_select="h264_nvenc_encoder"
2765 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2766 vc1_crystalhd_decoder_select="crystalhd"
2767 vc1_cuvid_decoder_deps="cuda cuvid"
2768 vc1_mmal_decoder_deps="mmal"
2769 vc1_vdpau_decoder_deps="vdpau"
2770 vc1_vdpau_decoder_select="vc1_decoder"
2771 vp8_cuvid_decoder_deps="cuda cuvid"
2772 vp8_mediacodec_decoder_deps="mediacodec"
2773 vp8_qsv_decoder_deps="libmfx"
2774 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2775 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2776 vp8_vaapi_encoder_select="vaapi_encode"
2777 vp9_cuvid_decoder_deps="cuda cuvid"
2778 vp9_mediacodec_decoder_deps="mediacodec"
2779 wmv3_crystalhd_decoder_select="crystalhd"
2780 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2781
2782 # parsers
2783 h264_parser_select="golomb h264dsp h264parse"
2784 hevc_parser_select="hevcparse"
2785 mpegaudio_parser_select="mpegaudioheader"
2786 mpegvideo_parser_select="mpegvideo"
2787 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2788 vc1_parser_select="vc1dsp"
2789
2790 # bitstream_filters
2791 mjpeg2jpeg_bsf_select="jpegtables"
2792
2793 # external libraries
2794 aac_at_decoder_deps="audiotoolbox"
2795 ac3_at_decoder_deps="audiotoolbox"
2796 ac3_at_decoder_select="ac3_parser"
2797 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2798 alac_at_decoder_deps="audiotoolbox"
2799 amr_nb_at_decoder_deps="audiotoolbox"
2800 avisynth_deps_any="dlopen LoadLibrary"
2801 avisynth_demuxer_deps="avisynth"
2802 avisynth_demuxer_select="riffdec"
2803 eac3_at_decoder_deps="audiotoolbox"
2804 eac3_at_decoder_select="ac3_parser"
2805 gsm_ms_at_decoder_deps="audiotoolbox"
2806 ilbc_at_decoder_deps="audiotoolbox"
2807 mp1_at_decoder_deps="audiotoolbox"
2808 mp2_at_decoder_deps="audiotoolbox"
2809 mp3_at_decoder_deps="audiotoolbox"
2810 mp1_at_decoder_select="mpegaudioheader"
2811 mp2_at_decoder_select="mpegaudioheader"
2812 mp3_at_decoder_select="mpegaudioheader"
2813 pcm_alaw_at_decoder_deps="audiotoolbox"
2814 pcm_mulaw_at_decoder_deps="audiotoolbox"
2815 qdmc_at_decoder_deps="audiotoolbox"
2816 qdm2_at_decoder_deps="audiotoolbox"
2817 aac_at_encoder_deps="audiotoolbox"
2818 aac_at_encoder_select="audio_frame_queue"
2819 alac_at_encoder_deps="audiotoolbox"
2820 alac_at_encoder_select="audio_frame_queue"
2821 ilbc_at_encoder_deps="audiotoolbox"
2822 ilbc_at_encoder_select="audio_frame_queue"
2823 pcm_alaw_at_encoder_deps="audiotoolbox"
2824 pcm_alaw_at_encoder_select="audio_frame_queue"
2825 pcm_mulaw_at_encoder_deps="audiotoolbox"
2826 pcm_mulaw_at_encoder_select="audio_frame_queue"
2827 chromaprint_muxer_deps="chromaprint"
2828 h264_videotoolbox_encoder_deps="videotoolbox_encoder pthreads"
2829 libcelt_decoder_deps="libcelt"
2830 libfdk_aac_decoder_deps="libfdk_aac"
2831 libfdk_aac_encoder_deps="libfdk_aac"
2832 libfdk_aac_encoder_select="audio_frame_queue"
2833 libgme_demuxer_deps="libgme"
2834 libgsm_decoder_deps="libgsm"
2835 libgsm_encoder_deps="libgsm"
2836 libgsm_ms_decoder_deps="libgsm"
2837 libgsm_ms_encoder_deps="libgsm"
2838 libilbc_decoder_deps="libilbc"
2839 libilbc_encoder_deps="libilbc"
2840 libkvazaar_encoder_deps="libkvazaar"
2841 libmodplug_demuxer_deps="libmodplug"
2842 libmp3lame_encoder_deps="libmp3lame"
2843 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2844 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2845 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2846 libopencore_amrnb_encoder_select="audio_frame_queue"
2847 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2848 libopenh264_decoder_deps="libopenh264"
2849 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2850 libopenh264_encoder_deps="libopenh264"
2851 libopenjpeg_decoder_deps="libopenjpeg"
2852 libopenjpeg_encoder_deps="libopenjpeg"
2853 libopenmpt_demuxer_deps="libopenmpt"
2854 libopus_decoder_deps="libopus"
2855 libopus_encoder_deps="libopus"
2856 libopus_encoder_select="audio_frame_queue"
2857 libschroedinger_decoder_deps="libschroedinger"
2858 libschroedinger_encoder_deps="libschroedinger"
2859 libshine_encoder_deps="libshine"
2860 libshine_encoder_select="audio_frame_queue"
2861 libspeex_decoder_deps="libspeex"
2862 libspeex_encoder_deps="libspeex"
2863 libspeex_encoder_select="audio_frame_queue"
2864 libtheora_encoder_deps="libtheora"
2865 libtwolame_encoder_deps="libtwolame"
2866 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2867 libvorbis_decoder_deps="libvorbis"
2868 libvorbis_encoder_deps="libvorbis"
2869 libvorbis_encoder_select="audio_frame_queue"
2870 libvpx_vp8_decoder_deps="libvpx"
2871 libvpx_vp8_encoder_deps="libvpx"
2872 libvpx_vp9_decoder_deps="libvpx"
2873 libvpx_vp9_encoder_deps="libvpx"
2874 libwavpack_encoder_deps="libwavpack"
2875 libwavpack_encoder_select="audio_frame_queue"
2876 libwebp_encoder_deps="libwebp"
2877 libwebp_anim_encoder_deps="libwebp"
2878 libx262_encoder_deps="libx262"
2879 libx264_encoder_deps="libx264"
2880 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2881 libx264rgb_encoder_select="libx264_encoder"
2882 libx265_encoder_deps="libx265"
2883 libxavs_encoder_deps="libxavs"
2884 libxvid_encoder_deps="libxvid"
2885 libzvbi_teletext_decoder_deps="libzvbi"
2886 videotoolbox_deps="VideoToolbox_VideoToolbox_h"
2887 videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework CoreVideo"
2888 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2889 videotoolbox_encoder_suggest="vda_framework vt_bt2020"
2890 vt_bt2020_deps="kCVImageBufferColorPrimaries_ITU_R_2020"
2891
2892 # demuxers / muxers
2893 ac3_demuxer_select="ac3_parser"
2894 aiff_muxer_select="iso_media"
2895 asf_demuxer_select="riffdec"
2896 asf_o_demuxer_select="riffdec"
2897 asf_muxer_select="riffenc"
2898 asf_stream_muxer_select="asf_muxer"
2899 avi_demuxer_select="iso_media riffdec exif"
2900 avi_muxer_select="riffenc"
2901 caf_demuxer_select="iso_media riffdec"
2902 caf_muxer_select="iso_media"
2903 dash_muxer_select="mp4_muxer"
2904 dirac_demuxer_select="dirac_parser"
2905 dts_demuxer_select="dca_parser"
2906 dtshd_demuxer_select="dca_parser"
2907 dv_demuxer_select="dvprofile"
2908 dv_muxer_select="dvprofile"
2909 dxa_demuxer_select="riffdec"
2910 eac3_demuxer_select="ac3_parser"
2911 f4v_muxer_select="mov_muxer"
2912 fifo_muxer_deps="threads"
2913 flac_demuxer_select="flac_parser"
2914 hds_muxer_select="flv_muxer"
2915 hls_muxer_select="mpegts_muxer"
2916 image2_alias_pix_demuxer_select="image2_demuxer"
2917 image2_brender_pix_demuxer_select="image2_demuxer"
2918 ipod_muxer_select="mov_muxer"
2919 ismv_muxer_select="mov_muxer"
2920 libnut_demuxer_deps="libnut"
2921 libnut_muxer_deps="libnut"
2922 matroska_audio_muxer_select="matroska_muxer"
2923 matroska_demuxer_select="iso_media riffdec"
2924 matroska_demuxer_suggest="bzlib lzo zlib"
2925 matroska_muxer_select="iso_media riffenc"
2926 mmf_muxer_select="riffenc"
2927 mov_demuxer_select="iso_media riffdec"
2928 mov_demuxer_suggest="zlib"
2929 mov_muxer_select="iso_media riffenc rtpenc_chain"
2930 mp3_demuxer_select="mpegaudio_parser"
2931 mp3_muxer_select="mpegaudioheader"
2932 mp4_muxer_select="mov_muxer"
2933 mpegts_demuxer_select="iso_media"
2934 mpegts_muxer_select="adts_muxer latm_muxer"
2935 mpegtsraw_demuxer_select="mpegts_demuxer"
2936 mxf_d10_muxer_select="mxf_muxer"
2937 mxf_opatom_muxer_select="mxf_muxer"
2938 nut_muxer_select="riffenc"
2939 nuv_demuxer_select="riffdec"
2940 oga_muxer_select="ogg_muxer"
2941 ogg_demuxer_select="dirac_parse"
2942 ogv_muxer_select="ogg_muxer"
2943 opus_muxer_select="ogg_muxer"
2944 psp_muxer_select="mov_muxer"
2945 rtp_demuxer_select="sdp_demuxer"
2946 rtp_muxer_select="golomb"
2947 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2948 rtsp_demuxer_select="http_protocol rtpdec"
2949 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2950 sap_demuxer_select="sdp_demuxer"
2951 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2952 sdp_demuxer_select="rtpdec"
2953 smoothstreaming_muxer_select="ismv_muxer"
2954 spdif_muxer_select="aac_parser"
2955 spx_muxer_select="ogg_muxer"
2956 swf_demuxer_suggest="zlib"
2957 tak_demuxer_select="tak_parser"
2958 tg2_muxer_select="mov_muxer"
2959 tgp_muxer_select="mov_muxer"
2960 vobsub_demuxer_select="mpegps_demuxer"
2961 w64_demuxer_select="wav_demuxer"
2962 w64_muxer_select="wav_muxer"
2963 wav_demuxer_select="riffdec"
2964 wav_muxer_select="riffenc"
2965 webm_muxer_select="iso_media riffenc"
2966 webm_dash_manifest_demuxer_select="matroska_demuxer"
2967 wtv_demuxer_select="mpegts_demuxer riffdec"
2968 wtv_muxer_select="mpegts_muxer riffenc"
2969 xmv_demuxer_select="riffdec"
2970 xwma_demuxer_select="riffdec"
2971
2972 # indevs / outdevs
2973 alsa_indev_deps="alsa"
2974 alsa_outdev_deps="alsa"
2975 avfoundation_indev_deps="pthreads"
2976 avfoundation_indev_extralibs="-framework Foundation -framework AVFoundation -framework CoreVideo -framework CoreMedia"
2977 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2978 caca_outdev_deps="libcaca"
2979 decklink_indev_deps="decklink threads"
2980 decklink_indev_extralibs="-lstdc++"
2981 decklink_outdev_deps="decklink threads"
2982 decklink_outdev_extralibs="-lstdc++"
2983 dshow_indev_deps="IBaseFilter"
2984 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
2985 dv1394_indev_deps="dv1394"
2986 dv1394_indev_select="dv_demuxer"
2987 fbdev_indev_deps="linux_fb_h"
2988 fbdev_outdev_deps="linux_fb_h"
2989 gdigrab_indev_deps="CreateDIBSection"
2990 gdigrab_indev_extralibs="-lgdi32"
2991 gdigrab_indev_select="bmp_decoder"
2992 iec61883_indev_deps="libiec61883"
2993 jack_indev_deps="jack"
2994 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2995 lavfi_indev_deps="avfilter"
2996 libcdio_indev_deps="libcdio"
2997 libdc1394_indev_deps="libdc1394"
2998 libv4l2_indev_deps="libv4l2"
2999 openal_indev_deps="openal"
3000 opengl_outdev_deps="opengl"
3001 oss_indev_deps_any="soundcard_h sys_soundcard_h"
3002 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
3003 pulse_indev_deps="libpulse"
3004 pulse_outdev_deps="libpulse"
3005 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
3006 qtkit_indev_select="qtkit"
3007 sdl2_outdev_deps="sdl2"
3008 sndio_indev_deps="sndio"
3009 sndio_outdev_deps="sndio"
3010 v4l_indev_deps="linux_videodev_h"
3011 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3012 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3013 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
3014 vfwcap_indev_extralibs="-lavicap32"
3015 xcbgrab_indev_deps="libxcb"
3016 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3017 xv_outdev_extralibs="-lXv -lX11 -lXext"
3018
3019 # protocols
3020 async_protocol_deps="threads"
3021 bluray_protocol_deps="libbluray"
3022 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
3023 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3024 ffrtmpcrypt_protocol_select="tcp_protocol"
3025 ffrtmphttp_protocol_deps="!librtmp_protocol"
3026 ffrtmphttp_protocol_select="http_protocol"
3027 ftp_protocol_select="tcp_protocol"
3028 gopher_protocol_select="network"
3029 http_protocol_select="tcp_protocol"
3030 httpproxy_protocol_select="tcp_protocol"
3031 https_protocol_select="tls_protocol"
3032 icecast_protocol_select="http_protocol"
3033 librtmp_protocol_deps="librtmp"
3034 librtmpe_protocol_deps="librtmp"
3035 librtmps_protocol_deps="librtmp"
3036 librtmpt_protocol_deps="librtmp"
3037 librtmpte_protocol_deps="librtmp"
3038 libsmbclient_protocol_deps="libsmbclient gplv3"
3039 libssh_protocol_deps="libssh"
3040 mmsh_protocol_select="http_protocol"
3041 mmst_protocol_select="network"
3042 rtmp_protocol_deps="!librtmp_protocol"
3043 rtmp_protocol_select="tcp_protocol"
3044 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3045 rtmps_protocol_deps="!librtmp_protocol"
3046 rtmps_protocol_select="tls_protocol"
3047 rtmpt_protocol_select="ffrtmphttp_protocol"
3048 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3049 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3050 rtp_protocol_select="udp_protocol"
3051 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3052 sctp_protocol_select="network"
3053 srtp_protocol_select="rtp_protocol srtp"
3054 tcp_protocol_select="network"
3055 tls_gnutls_protocol_deps="gnutls !tls_schannel_protocol !tls_securetransport_protocol"
3056 tls_gnutls_protocol_select="tcp_protocol"
3057 tls_openssl_protocol_deps="openssl !tls_schannel_protocol !tls_securetransport_protocol !tls_gnutls_protocol"
3058 tls_openssl_protocol_select="tcp_protocol"
3059 tls_schannel_protocol_deps="schannel"
3060 tls_schannel_protocol_select="tcp_protocol"
3061 tls_securetransport_protocol_deps="securetransport"
3062 tls_securetransport_protocol_select="tcp_protocol"
3063 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
3064 udp_protocol_select="network"
3065 udplite_protocol_select="network"
3066 unix_protocol_deps="sys_un_h"
3067 unix_protocol_select="network"
3068
3069 # filters
3070 afftfilt_filter_deps="avcodec"
3071 afftfilt_filter_select="fft"
3072 amovie_filter_deps="avcodec avformat"
3073 aresample_filter_deps="swresample"
3074 ass_filter_deps="libass"
3075 atempo_filter_deps="avcodec"
3076 atempo_filter_select="rdft"
3077 azmq_filter_deps="libzmq"
3078 blackframe_filter_deps="gpl"
3079 boxblur_filter_deps="gpl"
3080 bs2b_filter_deps="libbs2b"
3081 colormatrix_filter_deps="gpl"
3082 cover_rect_filter_deps="avcodec avformat gpl"
3083 cropdetect_filter_deps="gpl"
3084 deinterlace_qsv_filter_deps="libmfx"
3085 deinterlace_vaapi_filter_deps="vaapi"
3086 delogo_filter_deps="gpl"
3087 deshake_filter_select="pixelutils"
3088 drawtext_filter_deps="libfreetype"
3089 eq_filter_deps="gpl"
3090 fftfilt_filter_deps="avcodec"
3091 fftfilt_filter_select="rdft"
3092 find_rect_filter_deps="avcodec avformat gpl"
3093 firequalizer_filter_deps="avcodec"
3094 firequalizer_filter_select="rdft"
3095 flite_filter_deps="libflite"
3096 framerate_filter_select="pixelutils"
3097 frei0r_filter_deps="frei0r dlopen"
3098 frei0r_src_filter_deps="frei0r dlopen"
3099 fspp_filter_deps="gpl"
3100 geq_filter_deps="gpl"
3101 histeq_filter_deps="gpl"
3102 hqdn3d_filter_deps="gpl"
3103 interlace_filter_deps="gpl"
3104 kerndeint_filter_deps="gpl"
3105 ladspa_filter_deps="ladspa dlopen"
3106 mcdeint_filter_deps="avcodec gpl"
3107 movie_filter_deps="avcodec avformat"
3108 mpdecimate_filter_deps="gpl"
3109 mpdecimate_filter_select="pixelutils"
3110 mptestsrc_filter_deps="gpl"
3111 negate_filter_deps="lut_filter"
3112 nnedi_filter_deps="gpl"
3113 ocr_filter_deps="libtesseract"
3114 ocv_filter_deps="libopencv"
3115 owdenoise_filter_deps="gpl"
3116 pan_filter_deps="swresample"
3117 perspective_filter_deps="gpl"
3118 phase_filter_deps="gpl"
3119 pp7_filter_deps="gpl"
3120 pp_filter_deps="gpl postproc"
3121 pullup_filter_deps="gpl"
3122 removelogo_filter_deps="avcodec avformat swscale"
3123 repeatfields_filter_deps="gpl"
3124 resample_filter_deps="avresample"
3125 rubberband_filter_deps="librubberband"
3126 sab_filter_deps="gpl swscale"
3127 scale2ref_filter_deps="swscale"
3128 scale_filter_deps="swscale"
3129 scale_qsv_filter_deps="libmfx"
3130 select_filter_select="pixelutils"
3131 showcqt_filter_deps="avcodec avformat swscale"
3132 showcqt_filter_select="fft"
3133 showfreqs_filter_deps="avcodec"
3134 showfreqs_filter_select="fft"
3135 showspectrum_filter_deps="avcodec"
3136 showspectrum_filter_select="fft"
3137 showspectrumpic_filter_deps="avcodec"
3138 showspectrumpic_filter_select="fft"
3139 signature_filter_deps="gpl avcodec avformat"
3140 smartblur_filter_deps="gpl swscale"
3141 sofalizer_filter_deps="netcdf avcodec"
3142 sofalizer_filter_select="fft"
3143 spectrumsynth_filter_deps="avcodec"
3144 spectrumsynth_filter_select="fft"
3145 spp_filter_deps="gpl avcodec"
3146 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3147 stereo3d_filter_deps="gpl"
3148 subtitles_filter_deps="avformat avcodec libass"
3149 super2xsai_filter_deps="gpl"
3150 pixfmts_super2xsai_test_deps="super2xsai_filter"
3151 tinterlace_filter_deps="gpl"
3152 tinterlace_merge_test_deps="tinterlace_filter"
3153 tinterlace_pad_test_deps="tinterlace_filter"
3154 uspp_filter_deps="gpl avcodec"
3155 vaguedenoiser_filter_deps="gpl"
3156 vidstabdetect_filter_deps="libvidstab"
3157 vidstabtransform_filter_deps="libvidstab"
3158 zmq_filter_deps="libzmq"
3159 zoompan_filter_deps="swscale"
3160 zscale_filter_deps="libzimg"
3161 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3162
3163 # examples
3164 avio_dir_cmd_deps="avformat avutil"
3165 avio_reading_deps="avformat avcodec avutil"
3166 decode_audio_example_deps="avcodec avutil"
3167 decode_video_example_deps="avcodec avutil"
3168 demuxing_decoding_example_deps="avcodec avformat avutil"
3169 encode_audio_example_deps="avcodec avutil"
3170 encode_video_example_deps="avcodec avutil"
3171 extract_mvs_example_deps="avcodec avformat avutil"
3172 filter_audio_example_deps="avfilter avutil"
3173 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3174 filtering_video_example_deps="avfilter avcodec avformat avutil"
3175 http_multiclient_example_deps="avformat avutil fork"
3176 metadata_example_deps="avformat avutil"
3177 muxing_example_deps="avcodec avformat avutil swscale"
3178 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3179 remuxing_example_deps="avcodec avformat avutil"
3180 resampling_audio_example_deps="avutil swresample"
3181 scaling_video_example_deps="avutil swscale"
3182 transcode_aac_example_deps="avcodec avformat swresample"
3183 transcoding_example_deps="avfilter avcodec avformat avutil"
3184
3185 # libraries, in linking order
3186 avcodec_deps="avutil"
3187 avdevice_deps="avformat avcodec avutil"
3188 avfilter_deps="avutil"
3189 avformat_deps="avcodec avutil"
3190 avresample_deps="avutil"
3191 postproc_deps="avutil gpl"
3192 swresample_deps="avutil"
3193 swscale_deps="avutil"
3194
3195 # programs
3196 ffmpeg_deps="avcodec avfilter avformat swresample"
3197 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3198                null_filter
3199                trim_filter"
3200 ffplay_deps="avcodec avformat swscale swresample sdl2"
3201 ffplay_extralibs='$sdl2_extralibs'
3202 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3203 ffprobe_deps="avcodec avformat"
3204 ffserver_deps="avformat fork sarestart"
3205 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3206
3207 # documentation
3208 podpages_deps="perl"
3209 manpages_deps="perl pod2man"
3210 htmlpages_deps="perl"
3211 htmlpages_deps_any="makeinfo_html texi2html"
3212 txtpages_deps="perl makeinfo"
3213 doc_deps_any="manpages htmlpages podpages txtpages"
3214
3215 # default parameters
3216
3217 logfile="config.log"
3218
3219 # installation paths
3220 prefix_default="/usr/local"
3221 bindir_default='${prefix}/bin'
3222 datadir_default='${prefix}/share/ffmpeg'
3223 docdir_default='${prefix}/share/doc/ffmpeg'
3224 incdir_default='${prefix}/include'
3225 libdir_default='${prefix}/lib'
3226 mandir_default='${prefix}/share/man'
3227
3228 # toolchain
3229 ar_default="ar"
3230 cc_default="gcc"
3231 cxx_default="g++"
3232 host_cc_default="gcc"
3233 doxygen_default="doxygen"
3234 install="install"
3235 ln_s_default="ln -s -f"
3236 nm_default="nm -g"
3237 objformat="elf"
3238 pkg_config_default=pkg-config
3239 ranlib_default="ranlib"
3240 strip_default="strip"
3241 version_script='--version-script'
3242 yasmexe_default="yasm"
3243 windres_default="windres"
3244
3245 # OS
3246 target_os_default=$(tolower $(uname -s))
3247 host_os=$target_os_default
3248
3249 # machine
3250 if test "$target_os_default" = aix; then
3251     arch_default=$(uname -p)
3252     strip_default="strip -X32_64"
3253 else
3254     arch_default=$(uname -m)
3255 fi
3256 cpu="generic"
3257 intrinsics="none"
3258
3259 # configurable options
3260 enable $PROGRAM_LIST
3261 enable $DOCUMENT_LIST
3262 enable $EXAMPLE_LIST
3263 enable $(filter_out avresample $LIBRARY_LIST)
3264 enable stripping
3265
3266 enable asm
3267 enable debug
3268 enable doc
3269 enable faan faandct faanidct
3270 enable optimizations
3271 enable runtime_cpudetect
3272 enable safe_bitstream_reader
3273 enable static
3274 enable swscale_alpha
3275 enable valgrind_backtrace
3276
3277 sws_max_filter_size_default=256
3278 set_default sws_max_filter_size
3279
3280 # build settings
3281 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3282 LIBPREF="lib"
3283 LIBSUF=".a"
3284 FULLNAME='$(NAME)$(BUILDSUF)'
3285 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3286 SLIBPREF="lib"
3287 SLIBSUF=".so"
3288 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3289 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3290 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3291 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3292 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3293 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3294 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3295
3296 asflags_filter=echo
3297 cflags_filter=echo
3298 ldflags_filter=echo
3299
3300 AS_C='-c'
3301 AS_O='-o $@'
3302 CC_C='-c'
3303 CC_E='-E -o $@'
3304 CC_O='-o $@'
3305 CXX_C='-c'
3306 CXX_O='-o $@'
3307 OBJCC_C='-c'
3308 OBJCC_E='-E -o $@'
3309 OBJCC_O='-o $@'
3310 LD_O='-o $@'
3311 LD_LIB='-l%'
3312 LD_PATH='-L'
3313 HOSTCC_C='-c'
3314 HOSTCC_E='-E -o $@'
3315 HOSTCC_O='-o $@'
3316 HOSTLD_O='-o $@'
3317
3318 host_extralibs='-lm'
3319 host_cflags_filter=echo
3320 host_ldflags_filter=echo
3321
3322 target_path='$(CURDIR)'
3323
3324 # since the object filename is not given with the -MM flag, the compiler
3325 # is only able to print the basename, and we must add the path ourselves
3326 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3327 DEPFLAGS='-MM'
3328
3329 # find source path
3330 if test -f configure; then
3331     source_path=.
3332 else
3333     source_path=$(cd $(dirname "$0"); pwd)
3334     case "$source_path" in
3335         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3336     esac
3337     test -e "$source_path/config.h" &&
3338         die "Out of tree builds are impossible with config.h in source dir."
3339 fi
3340
3341 for v in "$@"; do
3342     r=${v#*=}
3343     l=${v%"$r"}
3344     r=$(sh_quote "$r")
3345     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3346 done
3347
3348 find_things(){
3349     thing=$1
3350     pattern=$2
3351     file=$source_path/$3
3352     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3353 }
3354
3355 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3356 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3357 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3358 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3359 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3360 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3361 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3362 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3363 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3364
3365 find_things_extern(){
3366     thing=$1
3367     pattern=$2
3368     file=$source_path/$3
3369     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3370 }
3371
3372 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3373 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3374
3375 ALL_COMPONENTS="
3376     $BSF_LIST
3377     $DECODER_LIST
3378     $DEMUXER_LIST
3379     $ENCODER_LIST
3380     $FILTER_LIST
3381     $HWACCEL_LIST
3382     $INDEV_LIST
3383     $MUXER_LIST
3384     $OUTDEV_LIST
3385     $PARSER_LIST
3386     $PROTOCOL_LIST
3387 "
3388
3389 for n in $COMPONENT_LIST; do
3390     v=$(toupper ${n%s})_LIST
3391     eval enable \$$v
3392     eval ${n}_if_any="\$$v"
3393 done
3394
3395 enable $ARCH_EXT_LIST
3396
3397 die_unknown(){
3398     echo "Unknown option \"$1\"."
3399     echo "See $0 --help for available options."
3400     exit 1
3401 }
3402
3403 print_in_columns() {
3404     cols=$(expr $ncols / 24)
3405     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3406 }
3407
3408 show_list() {
3409     suffix=_$1
3410     shift
3411     echo $* | sed s/$suffix//g | print_in_columns
3412     exit 0
3413 }
3414
3415 rand_list(){
3416     IFS=', '
3417     set -- $*
3418     unset IFS
3419     for thing; do
3420         comp=${thing%:*}
3421         prob=${thing#$comp}
3422         prob=${prob#:}
3423         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3424         echo "prob ${prob:-0.5}"
3425         printf '%s\n' $comp
3426     done
3427 }
3428
3429 do_random(){
3430     action=$1
3431     shift
3432     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3433     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3434 }
3435
3436 for opt do
3437     optval="${opt#*=}"
3438     case "$opt" in
3439         --extra-ldflags=*)
3440             add_ldflags $optval
3441         ;;
3442         --extra-ldexeflags=*)
3443             add_ldexeflags $optval
3444         ;;
3445         --extra-ldlibflags=*)
3446             add_ldlibflags $optval
3447         ;;
3448         --extra-libs=*)
3449             add_extralibs $optval
3450         ;;
3451         --disable-devices)
3452             disable $INDEV_LIST $OUTDEV_LIST
3453         ;;
3454         --enable-debug=*)
3455             debuglevel="$optval"
3456         ;;
3457         --disable-programs)
3458             disable $PROGRAM_LIST
3459         ;;
3460         --disable-everything)
3461             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3462         ;;
3463         --disable-all)
3464             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3465             disable $LIBRARY_LIST $PROGRAM_LIST doc
3466             enable avutil
3467         ;;
3468         --enable-random|--disable-random)
3469             action=${opt%%-random}
3470             do_random ${action#--} $COMPONENT_LIST
3471         ;;
3472         --enable-random=*|--disable-random=*)
3473             action=${opt%%-random=*}
3474             do_random ${action#--} $optval
3475         ;;
3476         --enable-*=*|--disable-*=*)
3477             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3478             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3479             eval list=\$$(toupper $thing)_LIST
3480             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3481             list=$(filter "$name" $list)
3482             [ "$list" = "" ] && warn "Option $opt did not match anything"
3483             $action $list
3484         ;;
3485         --enable-?*|--disable-?*)
3486             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3487             if is_in $option $COMPONENT_LIST; then
3488                 test $action = disable && action=unset
3489                 eval $action \$$(toupper ${option%s})_LIST
3490             elif is_in $option $CMDLINE_SELECT; then
3491                 $action $option
3492             else
3493                 die_unknown $opt
3494             fi
3495         ;;
3496         --list-*)
3497             NAME="${opt#--list-}"
3498             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3499             NAME=${NAME%s}
3500             eval show_list $NAME \$$(toupper $NAME)_LIST
3501         ;;
3502         --help|-h) show_help
3503         ;;
3504         --quiet|-q) quiet=yes
3505         ;;
3506         --fatal-warnings) enable fatal_warnings
3507         ;;
3508         *)
3509             optname="${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 die_license_disabled() {
3544     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3545 }
3546
3547 die_license_disabled_gpl() {
3548     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3549 }
3550
3551 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3552 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3553
3554 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3555 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3556
3557 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3558
3559 # Disable all the library-specific components if the library itself
3560 # is disabled, see AVCODEC_LIST and following _LIST variables.
3561
3562 disable_components(){
3563     disabled ${1} && disable $(
3564         eval components="\$$(toupper ${1})_COMPONENTS"
3565         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3566     )
3567 }
3568
3569 map 'disable_components $v' $LIBRARY_LIST
3570
3571 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3572 set >> $logfile
3573
3574 test -n "$valgrind" && toolchain="valgrind-memcheck"
3575
3576 case "$toolchain" in
3577     *-asan)
3578         cc_default="${toolchain%-asan}"
3579         add_cflags  -fsanitize=address
3580         add_ldflags -fsanitize=address
3581     ;;
3582     *-msan)
3583         cc_default="${toolchain%-msan}"
3584         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3585         add_ldflags -fsanitize=memory
3586     ;;
3587     *-tsan)
3588         cc_default="${toolchain%-tsan}"
3589         add_cflags  -fsanitize=thread -fPIE
3590         add_ldflags -fsanitize=thread -pie
3591         case "$toolchain" in
3592             gcc-tsan)
3593                 add_cflags  -fPIC
3594                 add_ldflags -fPIC
3595                 ;;
3596         esac
3597     ;;
3598     *-usan)
3599         cc_default="${toolchain%-usan}"
3600         add_cflags  -fsanitize=undefined
3601         add_ldflags -fsanitize=undefined
3602     ;;
3603     valgrind-*)
3604         target_exec_default="valgrind"
3605         case "$toolchain" in
3606             valgrind-massif)
3607                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3608                 ;;
3609             valgrind-memcheck)
3610                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3611                 ;;
3612         esac
3613     ;;
3614     msvc)
3615         # Check whether the current MSVC version needs the C99 converter.
3616         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3617         # support enough of C99 to build ffmpeg. Default to the new
3618         # behaviour if the regexp was unable to match anything, since this
3619         # successfully parses the version number of existing supported
3620         # versions that require the converter (MSVC 2010 and 2012).
3621         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3622         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3623             cc_default="cl"
3624             cxx_default="cl"
3625         else
3626             cc_default="c99wrap cl"
3627             cxx_default="c99wrap cl"
3628         fi
3629         ld_default="$source_path/compat/windows/mslink"
3630         nm_default="dumpbin -symbols"
3631         ar_default="lib"
3632         case "$arch" in
3633         arm*)
3634             as_default="armasm"
3635             ;;
3636         esac
3637         target_os_default="win32"
3638         # Use a relative path for TMPDIR. This makes sure all the
3639         # ffconf temp files are written with a relative path, avoiding
3640         # issues with msys/win32 path conversion for MSVC parameters
3641         # such as -Fo<file> or -out:<file>.
3642         TMPDIR=.
3643     ;;
3644     icl)
3645         cc_default="icl"
3646         ld_default="xilink"
3647         nm_default="dumpbin -symbols"
3648         ar_default="xilib"
3649         target_os_default="win32"
3650         TMPDIR=.
3651     ;;
3652     gcov)
3653         add_cflags  -fprofile-arcs -ftest-coverage
3654         add_ldflags -fprofile-arcs -ftest-coverage
3655     ;;
3656     llvm-cov)
3657         add_cflags -fprofile-arcs -ftest-coverage
3658         add_ldflags --coverage
3659     ;;
3660     hardened)
3661         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3662         add_cflags   -fno-strict-overflow -fstack-protector-all
3663         add_ldflags  -Wl,-z,relro -Wl,-z,now
3664         add_cflags   -fPIE
3665         add_ldexeflags -fPIE -pie
3666     ;;
3667     ?*)
3668         die "Unknown toolchain $toolchain"
3669     ;;
3670 esac
3671
3672 test -n "$cross_prefix" && enable cross_compile
3673
3674 if enabled cross_compile; then
3675     test -n "$arch" && test -n "$target_os" ||
3676         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3677 fi
3678
3679 ar_default="${cross_prefix}${ar_default}"
3680 cc_default="${cross_prefix}${cc_default}"
3681 cxx_default="${cross_prefix}${cxx_default}"
3682 nm_default="${cross_prefix}${nm_default}"
3683 pkg_config_default="${cross_prefix}${pkg_config_default}"
3684 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3685     ranlib_default="${cross_prefix}${ranlib_default} -D"
3686 else
3687     ranlib_default="${cross_prefix}${ranlib_default}"
3688 fi
3689 strip_default="${cross_prefix}${strip_default}"
3690 windres_default="${cross_prefix}${windres_default}"
3691
3692 sysinclude_default="${sysroot}/usr/include"
3693
3694 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3695     target_exec target_os yasmexe
3696 enabled cross_compile || host_cc_default=$cc
3697 set_default host_cc
3698
3699 pkg_config_fail_message=""
3700 if ! $pkg_config --version >/dev/null 2>&1; then
3701     warn "$pkg_config not found, library detection may fail."
3702     pkg_config=false
3703 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3704     pkg_config_fail_message="
3705 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3706 fi
3707
3708 if test $doxygen != $doxygen_default && \
3709   ! $doxygen --version >/dev/null 2>&1; then
3710     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3711 fi
3712
3713 exesuf() {
3714     case $1 in
3715         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3716     esac
3717 }
3718
3719 EXESUF=$(exesuf $target_os)
3720 HOSTEXESUF=$(exesuf $host_os)
3721
3722 # set temporary file name
3723 : ${TMPDIR:=$TEMPDIR}
3724 : ${TMPDIR:=$TMP}
3725 : ${TMPDIR:=/tmp}
3726
3727 if [ -n "$tempprefix" ] ; then
3728     mktemp(){
3729         echo $tempprefix.${HOSTNAME}.${UID}
3730     }
3731 elif ! check_cmd mktemp -u XXXXXX; then
3732     # simple replacement for missing mktemp
3733     # NOT SAFE FOR GENERAL USE
3734     mktemp(){
3735         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3736     }
3737 fi
3738
3739 tmpfile(){
3740     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3741         (set -C; exec > $tmp) 2>/dev/null ||
3742         die "Unable to create temporary file in $TMPDIR."
3743     append TMPFILES $tmp
3744     eval $1=$tmp
3745 }
3746
3747 trap 'rm -f -- $TMPFILES' EXIT
3748
3749 tmpfile TMPASM .asm
3750 tmpfile TMPC   .c
3751 tmpfile TMPCPP .cpp
3752 tmpfile TMPE   $EXESUF
3753 tmpfile TMPH   .h
3754 tmpfile TMPM   .m
3755 tmpfile TMPO   .o
3756 tmpfile TMPS   .S
3757 tmpfile TMPSH  .sh
3758 tmpfile TMPV   .ver
3759
3760 unset -f mktemp
3761
3762 chmod +x $TMPE
3763
3764 # make sure we can execute files in $TMPDIR
3765 cat > $TMPSH 2>> $logfile <<EOF
3766 #! /bin/sh
3767 EOF
3768 chmod +x $TMPSH >> $logfile 2>&1
3769 if ! $TMPSH >> $logfile 2>&1; then
3770     cat <<EOF
3771 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3772 variable to another directory and make sure that it is not mounted noexec.
3773 EOF
3774     die "Sanity test failed."
3775 fi
3776
3777 armasm_flags(){
3778     for flag; do
3779         case $flag in
3780             # Filter out MSVC cl.exe options from cflags that shouldn't
3781             # be passed to gas-preprocessor
3782             -M[TD]*)                                            ;;
3783             *)                  echo $flag                      ;;
3784         esac
3785    done
3786 }
3787
3788 ccc_flags(){
3789     for flag; do
3790         case $flag in
3791             -std=c99)           echo -c99                       ;;
3792             -mcpu=*)            echo -arch ${flag#*=}           ;;
3793             -mieee)             echo -ieee                      ;;
3794             -O*|-fast)          echo $flag                      ;;
3795             -fno-math-errno)    echo -assume nomath_errno       ;;
3796             -g)                 echo -g3                        ;;
3797             -Wall)              echo -msg_enable level2         ;;
3798             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3799             -Wl,*)              echo $flag                      ;;
3800             -f*|-W*)                                            ;;
3801             *)                  echo $flag                      ;;
3802         esac
3803    done
3804 }
3805
3806 cparser_flags(){
3807     for flag; do
3808         case $flag in
3809             -Wno-switch)             echo -Wno-switch-enum ;;
3810             -Wno-format-zero-length) ;;
3811             -Wdisabled-optimization) ;;
3812             -Wno-pointer-sign)       echo -Wno-other ;;
3813             *)                       echo $flag ;;
3814         esac
3815     done
3816 }
3817
3818 msvc_common_flags(){
3819     for flag; do
3820         case $flag in
3821             # In addition to specifying certain flags under the compiler
3822             # specific filters, they must be specified here as well or else the
3823             # generic catch all at the bottom will print the original flag.
3824             -Wall)                ;;
3825             -std=c99)             ;;
3826             # Common flags
3827             -fomit-frame-pointer) ;;
3828             -g)                   echo -Z7 ;;
3829             -fno-math-errno)      ;;
3830             -fno-common)          ;;
3831             -fno-signed-zeros)    ;;
3832             -fPIC)                ;;
3833             -mthumb)              ;;
3834             -march=*)             ;;
3835             -lz)                  echo zlib.lib ;;
3836             -lavicap32)           echo vfw32.lib user32.lib ;;
3837             -lx264)               echo libx264.lib ;;
3838             -lstdc++)             ;;
3839             -l*)                  echo ${flag#-l}.lib ;;
3840             -LARGEADDRESSAWARE)   echo $flag ;;
3841             -L*)                  echo -libpath:${flag#-L} ;;
3842             *)                    echo $flag ;;
3843         esac
3844     done
3845 }
3846
3847 msvc_flags(){
3848     msvc_common_flags "$@"
3849     for flag; do
3850         case $flag in
3851             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3852                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3853                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3854                                        -wd4307 \
3855                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
3856         esac
3857     done
3858 }
3859
3860 icl_flags(){
3861     msvc_common_flags "$@"
3862     for flag; do
3863         case $flag in
3864             # Despite what Intel's documentation says -Wall, which is supported
3865             # on Windows, does enable remarks so disable them here.
3866             -Wall)                echo $flag -Qdiag-disable:remark ;;
3867             -std=c99)             echo -Qstd=c99 ;;
3868             -flto)                echo -ipo ;;
3869         esac
3870     done
3871 }
3872
3873 icc_flags(){
3874     for flag; do
3875         case $flag in
3876             -flto)                echo -ipo ;;
3877             *)                    echo $flag ;;
3878         esac
3879     done
3880 }
3881
3882 pgi_flags(){
3883     for flag; do
3884         case $flag in
3885             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3886             -fomit-frame-pointer) echo -Mnoframe ;;
3887             -g)                   echo -gopt ;;
3888             *)                    echo $flag ;;
3889         esac
3890     done
3891 }
3892
3893 suncc_flags(){
3894     for flag; do
3895         case $flag in
3896             -march=*|-mcpu=*)
3897                 case "${flag#*=}" in
3898                     native)                   echo -xtarget=native       ;;
3899                     v9|niagara)               echo -xarch=sparc          ;;
3900                     ultrasparc)               echo -xarch=sparcvis       ;;
3901                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3902                     i586|pentium)             echo -xchip=pentium        ;;
3903                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3904                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3905                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3906                     pentium4*)          echo -xtarget=pentium4           ;;
3907                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3908                     *-sse3)             echo -xarch=sse3                 ;;
3909                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3910                     bonnell)                   echo -xarch=ssse3         ;;
3911                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3912                     westmere)                  echo -xtarget=westmere    ;;
3913                     silvermont)                echo -xarch=sse4_2        ;;
3914                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3915                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
3916                                                echo -xarch=avx           ;;
3917                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3918                     btver1)                    echo -xarch=amdsse4a      ;;
3919                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
3920                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3921                     k8|opteron|athlon64|athlon-fx)
3922                                                echo -xarch=sse2a         ;;
3923                     athlon*)                   echo -xarch=pentium_proa  ;;
3924                 esac
3925                 ;;
3926             -std=c99)             echo -xc99              ;;
3927             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3928             -fPIC)                echo -KPIC -xcode=pic32 ;;
3929             -W*,*)                echo $flag              ;;
3930             -f*-*|-W*|-mimpure-text)                      ;;
3931             -shared)              echo -G                 ;;
3932             *)                    echo $flag              ;;
3933         esac
3934     done
3935 }
3936
3937 tms470_flags(){
3938     for flag; do
3939         case $flag in
3940             -march=*|-mcpu=*)
3941                 case "${flag#*=}" in
3942                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3943                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3944                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3945                     armv6*|arm11*)          echo -mv=6   ;;
3946                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3947                                             echo -mv=5e  ;;
3948                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3949                 esac
3950                 ;;
3951             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3952             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3953             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3954             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3955             -msoft-float)   echo --float_support=vfplib       ;;
3956             -O[0-3]|-mf=*)  echo $flag                        ;;
3957             -g)             echo -g -mn                       ;;
3958             -pds=*)         echo $flag                        ;;
3959             -D*|-I*)        echo $flag                        ;;
3960             --gcc|--abi=*)  echo $flag                        ;;
3961             -me)            echo $flag                        ;;
3962         esac
3963     done
3964 }
3965
3966 probe_cc(){
3967     pfx=$1
3968     _cc=$2
3969     first=$3
3970
3971     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3972     unset _ld_o _ldflags _ld_lib _ld_path
3973     unset _depflags _DEPCMD _DEPFLAGS
3974     _flags_filter=echo
3975
3976     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3977         true # no-op to avoid reading stdin in following checks
3978     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3979         _type=llvm_gcc
3980         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3981         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3982         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3983         _cflags_speed='-O3'
3984         _cflags_size='-Os'
3985     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3986         _type=gcc
3987         gcc_version=$($_cc --version | head -n1)
3988         gcc_basever=$($_cc -dumpversion)
3989         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3990         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3991         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3992         case $gcc_basever in
3993             2) ;;
3994             2.*) ;;
3995             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
3996         esac
3997         if [ "$first" = true ]; then
3998             case $gcc_basever in
3999                 4.2*)
4000                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4001             esac
4002         fi
4003         _cflags_speed='-O3'
4004         _cflags_size='-Os'
4005     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4006         _type=icc
4007         _ident=$($_cc --version | head -n1)
4008         _depflags='-MMD'
4009         _cflags_speed='-O3'
4010         _cflags_size='-Os'
4011         _cflags_noopt='-O1'
4012         _flags_filter=icc_flags
4013     elif $_cc -v 2>&1 | grep -q xlc; then
4014         _type=xlc
4015         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4016         _cflags_speed='-O5'
4017         _cflags_size='-O5 -qcompact'
4018     elif $_cc -V 2>/dev/null | grep -q Compaq; then
4019         _type=ccc
4020         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
4021         _DEPFLAGS='-M'
4022         _cflags_speed='-fast'
4023         _cflags_size='-O1'
4024         _flags_filter=ccc_flags
4025     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4026         test -d "$sysroot" || die "No valid sysroot specified."
4027         _type=armcc
4028         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4029         armcc_conf="$PWD/armcc.conf"
4030         $_cc --arm_linux_configure                 \
4031              --arm_linux_config_file="$armcc_conf" \
4032              --configure_sysroot="$sysroot"        \
4033              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4034              die "Error creating armcc configuration file."
4035         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4036         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4037         as_default="${cross_prefix}gcc"
4038         _depflags='-MMD'
4039         _cflags_speed='-O3'
4040         _cflags_size='-Os'
4041     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
4042         _type=tms470
4043         _ident=$($_cc -version | head -n1 | tr -s ' ')
4044         _flags='--gcc --abi=eabi -me'
4045         _cc_e='-ppl -fe=$@'
4046         _cc_o='-fe=$@'
4047         _depflags='-ppa -ppd=$(@:.o=.d)'
4048         _cflags_speed='-O3 -mf=5'
4049         _cflags_size='-O3 -mf=2'
4050         _flags_filter=tms470_flags
4051     elif $_cc -v 2>&1 | grep -q clang; then
4052         _type=clang
4053         _ident=$($_cc --version 2>/dev/null | head -n1)
4054         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4055         _cflags_speed='-O3'
4056         _cflags_size='-Oz'
4057     elif $_cc -V 2>&1 | grep -q Sun; then
4058         _type=suncc
4059         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4060         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4061         _DEPFLAGS='-xM1 -xc99'
4062         _ldflags='-std=c99'
4063         _cflags_speed='-O5'
4064         _cflags_size='-O5 -xspace'
4065         _flags_filter=suncc_flags
4066     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4067         _type=pathscale
4068         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4069         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4070         _cflags_speed='-O2'
4071         _cflags_size='-Os'
4072         _flags_filter='filter_out -Wdisabled-optimization'
4073     elif $_cc -v 2>&1 | grep -q Open64; then
4074         _type=open64
4075         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4076         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4077         _cflags_speed='-O2'
4078         _cflags_size='-Os'
4079         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4080     elif $_cc -V 2>&1 | grep -q Portland; then
4081         _type=pgi
4082         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
4083         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
4084         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
4085         _cflags_size="-O2 -Munroll=c:1 $opt_common"
4086         _cflags_noopt="-O"
4087         _flags_filter=pgi_flags
4088     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4089         _type=armasm
4090         _ident=$($_cc | head -n1)
4091         # 4509: "This form of conditional instruction is deprecated"
4092         _flags="-nologo -ignore 4509"
4093         _flags_filter=armasm_flags
4094     elif $_cc 2>&1 | grep -q Intel; then
4095         _type=icl
4096         _ident=$($_cc 2>&1 | head -n1)
4097         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4098         # Not only is O3 broken on 13.x+ but it is slower on all previous
4099         # versions (tested) as well.
4100         _cflags_speed="-O2"
4101         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4102         if $_cc 2>&1 | grep -q Linker; then
4103             _ld_o='-out:$@'
4104         else
4105             _ld_o='-Fe$@'
4106         fi
4107         _cc_o='-Fo$@'
4108         _cc_e='-P'
4109         _flags_filter=icl_flags
4110         _ld_lib='lib%.a'
4111         _ld_path='-libpath:'
4112         # -Qdiag-error to make icl error when seeing certain unknown arguments
4113         _flags='-nologo -Qdiag-error:4044,10157'
4114         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4115         # with MSVC which enables it by default.
4116         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4117         disable stripping
4118     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4119         # lld can emulate multiple different linkers; in ms link.exe mode,
4120         # the -? parameter gives the help output which contains an identifyable
4121         # string, while it gives an error in other modes.
4122         _type=lld-link
4123         # The link.exe mode doesn't have a switch for getting the version,
4124         # but we can force it back to gnu mode and get the version from there.
4125         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4126         _ld_o='-out:$@'
4127         _flags_filter=msvc_flags
4128         _ld_lib='lib%.a'
4129         _ld_path='-libpath:'
4130     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4131         _type=msvc
4132         _ident=$($_cc 2>&1 | head -n1)
4133         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4134         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4135         _cflags_speed="-O2"
4136         _cflags_size="-O1"
4137         if $_cc -nologo- 2>&1 | grep -q Linker; then
4138             _ld_o='-out:$@'
4139         else
4140             _ld_o='-Fe$@'
4141         fi
4142         _cc_o='-Fo$@'
4143         _cc_e='-P -Fi$@'
4144         _flags_filter=msvc_flags
4145         _ld_lib='lib%.a'
4146         _ld_path='-libpath:'
4147         _flags='-nologo'
4148         disable stripping
4149     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4150         _type=cparser
4151         _ident=$($_cc --version | head -n1)
4152         _depflags='-MMD'
4153         _cflags_speed='-O4'
4154         _cflags_size='-O2'
4155         _flags_filter=cparser_flags
4156     fi
4157
4158     eval ${pfx}_type=\$_type
4159     eval ${pfx}_ident=\$_ident
4160 }
4161
4162 set_ccvars(){
4163     eval ${1}_C=\${_cc_c-\${${1}_C}}
4164     eval ${1}_E=\${_cc_e-\${${1}_E}}
4165     eval ${1}_O=\${_cc_o-\${${1}_O}}
4166
4167     if [ -n "$_depflags" ]; then
4168         eval ${1}_DEPFLAGS=\$_depflags
4169     else
4170         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4171         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4172         eval DEP${1}FLAGS=\$_flags
4173     fi
4174 }
4175
4176 probe_cc cc "$cc" "true"
4177 cflags_filter=$_flags_filter
4178 cflags_speed=$_cflags_speed
4179 cflags_size=$_cflags_size
4180 cflags_noopt=$_cflags_noopt
4181 add_cflags $_flags $_cflags
4182 cc_ldflags=$_ldflags
4183 set_ccvars CC
4184 set_ccvars CXX
4185
4186 probe_cc hostcc "$host_cc"
4187 host_cflags_filter=$_flags_filter
4188 add_host_cflags  $_flags $_cflags
4189 set_ccvars HOSTCC
4190
4191 test -n "$cc_type" && enable $cc_type ||
4192     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4193
4194 : ${as_default:=$cc}
4195 : ${objcc_default:=$cc}
4196 : ${dep_cc_default:=$cc}
4197 : ${ld_default:=$cc}
4198 : ${host_ld_default:=$host_cc}
4199 set_default ar as objcc dep_cc ld ln_s host_ld windres
4200
4201 probe_cc as "$as"
4202 asflags_filter=$_flags_filter
4203 add_asflags $_flags $_cflags
4204 set_ccvars AS
4205
4206 probe_cc objcc "$objcc"
4207 objcflags_filter=$_flags_filter
4208 add_objcflags $_flags $_cflags
4209 set_ccvars OBJC
4210
4211 probe_cc ld "$ld"
4212 ldflags_filter=$_flags_filter
4213 add_ldflags $_flags $_ldflags
4214 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4215 LD_O=${_ld_o-$LD_O}
4216 LD_LIB=${_ld_lib-$LD_LIB}
4217 LD_PATH=${_ld_path-$LD_PATH}
4218
4219 probe_cc hostld "$host_ld"
4220 host_ldflags_filter=$_flags_filter
4221 add_host_ldflags $_flags $_ldflags
4222 HOSTLD_O=${_ld_o-$HOSTLD_O}
4223
4224 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4225     probe_cc depcc "$dep_cc"
4226     CCDEP=${_DEPCMD:-$DEPCMD}
4227     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4228     DEPCCFLAGS=$_flags
4229 fi
4230
4231 if $ar 2>&1 | grep -q Microsoft; then
4232     arflags="-nologo"
4233     ar_o='-out:$@'
4234 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
4235     arflags="rq"
4236     ar_o='$@'
4237 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
4238     arflags='-Xany -r -c'
4239     ar_o='$@'
4240 elif $ar 2>&1 | grep -q "\[D\] "; then
4241     arflags="rcD"
4242     ar_o='$@'
4243 else
4244     arflags="rc"
4245     ar_o='$@'
4246 fi
4247
4248 add_cflags $extra_cflags
4249 add_cxxflags $extra_cxxflags
4250 add_objcflags $extra_objcflags
4251 add_asflags $extra_cflags
4252
4253 if test -n "$sysroot"; then
4254     case "$cc_type" in
4255         gcc|llvm_gcc|clang)
4256             add_cppflags --sysroot="$sysroot"
4257             add_ldflags --sysroot="$sysroot"
4258 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
4259             add_cppflags -isysroot "$sysroot"
4260             add_ldflags -isysroot "$sysroot"
4261         ;;
4262         tms470)
4263             add_cppflags -I"$sysinclude"
4264             add_ldflags  --sysroot="$sysroot"
4265         ;;
4266     esac
4267 fi
4268
4269 if test "$cpu" = host; then
4270     enabled cross_compile &&
4271         die "--cpu=host makes no sense when cross-compiling."
4272
4273     case "$cc_type" in
4274         gcc|llvm_gcc)
4275             check_native(){
4276                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4277                 sed -n "/cc1.*$1=/{
4278                             s/.*$1=\\([^ ]*\\).*/\\1/
4279                             p
4280                             q
4281                         }" $TMPE
4282             }
4283             cpu=$(check_native -march || check_native -mcpu)
4284         ;;
4285         clang)
4286             check_native(){
4287                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4288                 sed -n "/cc1.*-target-cpu /{
4289                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4290                             p
4291                             q
4292                         }" $TMPE
4293             }
4294             cpu=$(check_native -march)
4295         ;;
4296     esac
4297
4298     test "${cpu:-host}" = host &&
4299         die "--cpu=host not supported with compiler $cc"
4300 fi
4301
4302 # Deal with common $arch aliases
4303 case "$arch" in
4304     aarch64|arm64)
4305         arch="aarch64"
4306     ;;
4307     arm*|iPad*|iPhone*)
4308         arch="arm"
4309     ;;
4310     mips*|IP*)
4311         case "$arch" in
4312         *el)
4313             add_cppflags -EL
4314             add_ldflags -EL
4315         ;;
4316         *eb)
4317             add_cppflags -EB
4318             add_ldflags -EB
4319         ;;
4320         esac
4321         arch="mips"
4322     ;;
4323     parisc*|hppa*)
4324         arch="parisc"
4325     ;;
4326     "Power Macintosh"|ppc*|powerpc*)
4327         arch="ppc"
4328     ;;
4329     s390|s390x)
4330         arch="s390"
4331     ;;
4332     sh4|sh)
4333         arch="sh4"
4334     ;;
4335     sun4*|sparc*)
4336         arch="sparc"
4337     ;;
4338     tilegx|tile-gx)
4339         arch="tilegx"
4340     ;;
4341     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4342         arch="x86"
4343     ;;
4344 esac
4345
4346 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4347 enable $arch
4348
4349 # Add processor-specific flags
4350 if enabled aarch64; then
4351
4352     case $cpu in
4353         armv*)
4354             cpuflags="-march=$cpu"
4355         ;;
4356         *)
4357             cpuflags="-mcpu=$cpu"
4358         ;;
4359     esac
4360
4361 elif enabled alpha; then
4362
4363     cpuflags="-mcpu=$cpu"
4364
4365 elif enabled arm; then
4366
4367     check_arm_arch() {
4368         check_cpp_condition stddef.h \
4369             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4370             $cpuflags
4371     }
4372
4373     probe_arm_arch() {
4374         if   check_arm_arch 4;        then echo armv4
4375         elif check_arm_arch 4T;       then echo armv4t
4376         elif check_arm_arch 5;        then echo armv5
4377         elif check_arm_arch 5E;       then echo armv5e
4378         elif check_arm_arch 5T;       then echo armv5t
4379         elif check_arm_arch 5TE;      then echo armv5te
4380         elif check_arm_arch 5TEJ;     then echo armv5te
4381         elif check_arm_arch 6;        then echo armv6
4382         elif check_arm_arch 6J;       then echo armv6j
4383         elif check_arm_arch 6K;       then echo armv6k
4384         elif check_arm_arch 6Z;       then echo armv6z
4385         elif check_arm_arch 6ZK;      then echo armv6zk
4386         elif check_arm_arch 6T2;      then echo armv6t2
4387         elif check_arm_arch 7;        then echo armv7
4388         elif check_arm_arch 7A  7_A;  then echo armv7-a
4389         elif check_arm_arch 7S;       then echo armv7-a
4390         elif check_arm_arch 7R  7_R;  then echo armv7-r
4391         elif check_arm_arch 7M  7_M;  then echo armv7-m
4392         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4393         elif check_arm_arch 8A  8_A;  then echo armv8-a
4394         fi
4395     }
4396
4397     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4398
4399     case $cpu in
4400         armv*)
4401             cpuflags="-march=$cpu"
4402             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4403         ;;
4404         *)
4405             cpuflags="-mcpu=$cpu"
4406             case $cpu in
4407                 cortex-a*)                               subarch=armv7a  ;;
4408                 cortex-r*)                               subarch=armv7r  ;;
4409                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4410                 arm11*)                                  subarch=armv6   ;;
4411                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4412                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4413                 *)                             subarch=$(probe_arm_arch) ;;
4414             esac
4415         ;;
4416     esac
4417
4418     case "$subarch" in
4419         armv5t*)    enable fast_clz                ;;
4420         armv[6-8]*)
4421             enable fast_clz
4422             disabled fast_unaligned || enable fast_unaligned
4423             ;;
4424     esac
4425
4426 elif enabled avr32; then
4427
4428     case $cpu in
4429         ap7[02]0[0-2])
4430             subarch="avr32_ap"
4431             cpuflags="-mpart=$cpu"
4432         ;;
4433         ap)
4434             subarch="avr32_ap"
4435             cpuflags="-march=$cpu"
4436         ;;
4437         uc3[ab]*)
4438             subarch="avr32_uc"
4439             cpuflags="-mcpu=$cpu"
4440         ;;
4441         uc)
4442             subarch="avr32_uc"
4443             cpuflags="-march=$cpu"
4444         ;;
4445     esac
4446
4447 elif enabled bfin; then
4448
4449     cpuflags="-mcpu=$cpu"
4450
4451 elif enabled mips; then
4452
4453     cpuflags="-march=$cpu"
4454
4455     if [ "$cpu" != "generic" ]; then
4456         disable mips32r2
4457         disable mips32r5
4458         disable mips64r2
4459         disable mips32r6
4460         disable mips64r6
4461         disable loongson2
4462         disable loongson3
4463
4464         case $cpu in
4465             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4466                 enable mips32r2
4467                 disable msa
4468             ;;
4469             p5600|i6400|p6600)
4470                 disable mipsdsp
4471                 disable mipsdspr2
4472             ;;
4473             loongson*)
4474                 enable loongson2
4475                 enable loongson3
4476                 enable local_aligned_8 local_aligned_16 local_aligned_32
4477                 enable simd_align_16
4478                 enable fast_64bit
4479                 enable fast_clz
4480                 enable fast_cmov
4481                 enable fast_unaligned
4482                 disable aligned_stack
4483                 disable mipsfpu
4484                 disable mipsdsp
4485                 disable mipsdspr2
4486                 case $cpu in
4487                     loongson3*)
4488                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4489                     ;;
4490                     loongson2e)
4491                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4492                     ;;
4493                     loongson2f)
4494                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4495                     ;;
4496                 esac
4497             ;;
4498             *)
4499                 # Unknown CPU. Disable everything.
4500                 warn "unknown CPU. Disabling all MIPS optimizations."
4501                 disable mipsfpu
4502                 disable mipsdsp
4503                 disable mipsdspr2
4504                 disable msa
4505                 disable mmi
4506             ;;
4507         esac
4508
4509         case $cpu in
4510             24kc)
4511                 disable mipsfpu
4512                 disable mipsdsp
4513                 disable mipsdspr2
4514             ;;
4515             24kf*)
4516                 disable mipsdsp
4517                 disable mipsdspr2
4518             ;;
4519             24kec|34kc|1004kc)
4520                 disable mipsfpu
4521                 disable mipsdspr2
4522             ;;
4523             24kef*|34kf*|1004kf*)
4524                 disable mipsdspr2
4525             ;;
4526             74kc)
4527                 disable mipsfpu
4528             ;;
4529             p5600)
4530                 enable mips32r5
4531                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4532             ;;
4533             i6400)
4534                 enable mips64r6
4535                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4536             ;;
4537             p6600)
4538                 enable mips64r6
4539                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4540             ;;
4541         esac
4542     else
4543         # We do not disable anything. Is up to the user to disable the unwanted features.
4544         warn 'generic cpu selected'
4545     fi
4546
4547 elif enabled ppc; then
4548
4549     disable ldbrx
4550
4551     case $(tolower $cpu) in
4552         601|ppc601|powerpc601)
4553             cpuflags="-mcpu=601"
4554             disable altivec
4555         ;;
4556         603*|ppc603*|powerpc603*)
4557             cpuflags="-mcpu=603"
4558             disable altivec
4559         ;;
4560         604*|ppc604*|powerpc604*)
4561             cpuflags="-mcpu=604"
4562             disable altivec
4563         ;;
4564         g3|75*|ppc75*|powerpc75*)
4565             cpuflags="-mcpu=750"
4566             disable altivec
4567         ;;
4568         g4|745*|ppc745*|powerpc745*)
4569             cpuflags="-mcpu=7450"
4570             disable vsx
4571         ;;
4572         74*|ppc74*|powerpc74*)
4573             cpuflags="-mcpu=7400"
4574             disable vsx
4575         ;;
4576         g5|970|ppc970|powerpc970)
4577             cpuflags="-mcpu=970"
4578             disable vsx
4579         ;;
4580         power[3-6]*)
4581             cpuflags="-mcpu=$cpu"
4582             disable vsx
4583         ;;
4584         power[7-8]*)
4585             cpuflags="-mcpu=$cpu"
4586         ;;
4587         cell)
4588             cpuflags="-mcpu=cell"
4589             enable ldbrx
4590             disable vsx
4591         ;;
4592         e500mc)
4593             cpuflags="-mcpu=e500mc"
4594             disable altivec
4595         ;;
4596         e500v2)
4597             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4598             disable altivec
4599             disable dcbzl
4600         ;;
4601         e500)
4602             cpuflags="-mcpu=8540 -mhard-float"
4603             disable altivec
4604             disable dcbzl
4605         ;;
4606     esac
4607
4608 elif enabled sparc; then
4609
4610     case $cpu in
4611         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4612             cpuflags="-mcpu=$cpu"
4613         ;;
4614         ultrasparc*|niagara[234])
4615             cpuflags="-mcpu=$cpu"
4616         ;;
4617     esac
4618
4619 elif enabled x86; then
4620
4621     case $cpu in
4622         i[345]86|pentium)
4623             cpuflags="-march=$cpu"
4624             disable i686
4625             disable mmx
4626         ;;
4627         # targets that do NOT support nopl and conditional mov (cmov)
4628         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4629             cpuflags="-march=$cpu"
4630             disable i686
4631         ;;
4632         # targets that do support nopl and conditional mov (cmov)
4633         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4634         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4635         |amdfam10|barcelona|b[dt]ver*|znver*)
4636             cpuflags="-march=$cpu"
4637             enable i686
4638             enable fast_cmov
4639         ;;
4640         # targets that do support conditional mov but on which it's slow
4641         pentium4|pentium4m|prescott|nocona)
4642             cpuflags="-march=$cpu"
4643             enable i686
4644             disable fast_cmov
4645         ;;
4646     esac
4647
4648 fi
4649
4650 if [ "$cpu" != generic ]; then
4651     add_cflags  $cpuflags
4652     add_asflags $cpuflags
4653     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4654 fi
4655
4656 # compiler sanity check
4657 check_exec <<EOF
4658 int main(void){ return 0; }
4659 EOF
4660 if test "$?" != 0; then
4661     echo "$cc is unable to create an executable file."
4662     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4663         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4664         echo "Only do this if you know what cross compiling means."
4665     fi
4666     die "C compiler test failed."
4667 fi
4668
4669 add_cppflags -D_ISOC99_SOURCE
4670 add_cxxflags -D__STDC_CONSTANT_MACROS
4671 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4672
4673 # some compilers silently accept -std=c11, so we also need to check that the
4674 # version macro is defined properly
4675 if test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L"; then
4676     add_cflags -std=c11
4677 else
4678     check_cflags -std=c99
4679 fi
4680
4681 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4682 #include <stdlib.h>
4683 EOF
4684 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4685 #include <stdlib.h>
4686 EOF
4687
4688 add_host_cppflags -D_ISOC99_SOURCE
4689 check_host_cflags -std=c99
4690 check_host_cflags -Wall
4691 check_host_cflags -O3
4692
4693 check_64bit(){
4694     arch32=$1
4695     arch64=$2
4696     expr=$3
4697     check_code cc "" "int test[2*($expr) - 1]" &&
4698         subarch=$arch64 || subarch=$arch32
4699 }
4700
4701 case "$arch" in
4702     aarch64|alpha|ia64)
4703         spic=$shared
4704     ;;
4705     mips)
4706         check_64bit mips mips64 '_MIPS_SIM > 1'
4707         spic=$shared
4708     ;;
4709     parisc)
4710         check_64bit parisc parisc64 'sizeof(void *) > 4'
4711         spic=$shared
4712     ;;
4713     ppc)
4714         check_64bit ppc ppc64 'sizeof(void *) > 4'
4715         spic=$shared
4716     ;;
4717     s390)
4718         check_64bit s390 s390x 'sizeof(void *) > 4'
4719         spic=$shared
4720     ;;
4721     sparc)
4722         check_64bit sparc sparc64 'sizeof(void *) > 4'
4723         spic=$shared
4724     ;;
4725     x86)
4726         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4727         # Treat x32 as x64 for now. Note it also needs spic=$shared
4728         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4729             subarch=x86_64
4730         if test "$subarch" = "x86_64"; then
4731             spic=$shared
4732         fi
4733     ;;
4734     ppc)
4735         check_cc <<EOF && subarch="ppc64"
4736         int test[(int)sizeof(char*) - 7];
4737 EOF
4738     ;;
4739 esac
4740
4741 enable $subarch
4742 enabled spic && enable_weak pic
4743
4744 # OS specific
4745 case $target_os in
4746     aix)
4747         SHFLAGS=-shared
4748         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4749         enabled shared && add_ldflags -Wl,-brtl
4750         ;;
4751     android)
4752         disable symver
4753         enable section_data_rel_ro
4754         SLIB_INSTALL_NAME='$(SLIBNAME)'
4755         SLIB_INSTALL_LINKS=
4756         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4757         ;;
4758     haiku)
4759         prefix_default="/boot/common"
4760         network_extralibs="-lnetwork"
4761         host_extralibs=
4762         ;;
4763     sunos)
4764         SHFLAGS='-shared -Wl,-h,$$(@F)'
4765         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4766         network_extralibs="-lsocket -lnsl"
4767         add_cppflags -D__EXTENSIONS__
4768         # When using suncc to build, the Solaris linker will mark
4769         # an executable with each instruction set encountered by
4770         # the Solaris assembler.  As our libraries contain their own
4771         # guards for processor-specific code, instead suppress
4772         # generation of the HWCAPS ELF section on Solaris x86 only.
4773         enabled_all suncc x86 &&
4774             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4775             add_ldflags -Wl,-M,mapfile
4776         nm_default='nm -P -g'
4777         version_script='-M'
4778         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
4779         ;;
4780     netbsd)
4781         disable symver
4782         oss_indev_extralibs="-lossaudio"
4783         oss_outdev_extralibs="-lossaudio"
4784         enabled gcc || check_ldflags -Wl,-zmuldefs
4785         ;;
4786     openbsd|bitrig)
4787         disable symver
4788         SHFLAGS='-shared'
4789         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4790         SLIB_INSTALL_LINKS=
4791         oss_indev_extralibs="-lossaudio"
4792         oss_outdev_extralibs="-lossaudio"
4793         ;;
4794     dragonfly)
4795         disable symver
4796         ;;
4797     freebsd)
4798         ;;
4799     bsd/os)
4800         add_extralibs -lpoll -lgnugetopt
4801         strip="strip -d"
4802         ;;
4803     darwin)
4804         enabled ppc && add_asflags -force_cpusubtype_ALL
4805         install_name_dir_default='$(SHLIBDIR)'
4806         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4807         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4808         strip="${strip} -x"
4809         add_ldflags -Wl,-dynamic,-search_paths_first
4810         SLIBSUF=".dylib"
4811         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4812         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4813         objformat="macho"
4814         enabled x86_64 && objformat="macho64"
4815         enabled_any pic shared x86_64 ||
4816             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4817         check_header dispatch/dispatch.h &&
4818             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
4819         version_script='-exported_symbols_list'
4820         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
4821         ;;
4822     msys*)
4823         die "Native MSYS builds are discouraged, please use the MINGW environment."
4824         ;;
4825     mingw32*|mingw64*)
4826         if test $target_os = "mingw32ce"; then
4827             disable network
4828         else
4829             target_os=mingw32
4830         fi
4831         decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
4832         decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
4833         LIBTARGET=i386
4834         if enabled x86_64; then
4835             LIBTARGET="i386:x86-64"
4836         elif enabled arm; then
4837             LIBTARGET=arm-wince
4838         fi
4839         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4840         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4841         shlibdir_default="$bindir_default"
4842         SLIBPREF=""
4843         SLIBSUF=".dll"
4844         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4845         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4846         dlltool="${cross_prefix}dlltool"
4847         if check_cmd lib.exe -list; then
4848             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4849             if enabled x86_64; then
4850                 LIBTARGET=x64
4851             fi
4852         elif check_cmd $dlltool --version; then
4853             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4854         fi
4855         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4856         SLIB_INSTALL_LINKS=
4857         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4858         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4859         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--disable-auto-image-base'
4860         objformat="win32"
4861         ranlib=:
4862         enable dos_paths
4863         check_ldflags -Wl,--nxcompat,--dynamicbase
4864         # Lets work around some stupidity in binutils.
4865         # ld will strip relocations from executables even though we need them
4866         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4867         # however ld then forgets what the entry point should be (oops) so we
4868         # have to manually (re)set it.
4869         if enabled x86_32; then
4870             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
4871         elif enabled x86_64; then
4872             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
4873             check_ldflags -Wl,--high-entropy-va # binutils 2.25
4874             # Set image base >4GB for extra entropy with HEASLR
4875             add_ldexeflags -Wl,--image-base,0x140000000
4876             append SHFLAGS -Wl,--image-base,0x180000000
4877         fi
4878         ;;
4879     win32|win64)
4880         disable symver
4881         if enabled shared; then
4882             # Link to the import library instead of the normal static library
4883             # for shared libs.
4884             LD_LIB='%.lib'
4885             # Cannot build both shared and static libs with MSVC or icl.
4886             disable static
4887         fi
4888         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4889         shlibdir_default="$bindir_default"
4890         SLIBPREF=""
4891         SLIBSUF=".dll"
4892         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4893         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4894         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4895         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4896         SLIB_INSTALL_LINKS=
4897         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4898         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4899         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4900         objformat="win32"
4901         ranlib=:
4902         enable dos_paths
4903         ;;
4904     cygwin*)
4905         target_os=cygwin
4906         shlibdir_default="$bindir_default"
4907         SLIBPREF="cyg"
4908         SLIBSUF=".dll"
4909         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4910         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4911         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4912         SLIB_INSTALL_LINKS=
4913         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4914         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4915         objformat="win32"
4916         enable dos_paths
4917         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4918         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4919         ;;
4920     *-dos|freedos|opendos)
4921         network_extralibs="-lsocket"
4922         objformat="coff"
4923         enable dos_paths
4924         add_cppflags -U__STRICT_ANSI__
4925         ;;
4926     linux)
4927         enable dv1394
4928         enable section_data_rel_ro
4929         ;;
4930     irix*)
4931         target_os=irix
4932         ranlib="echo ignoring ranlib"
4933         ;;
4934     os/2*)
4935         strip="lxlite -CS"
4936         objformat="aout"
4937         add_cppflags -D_GNU_SOURCE
4938         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4939         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4940         LIBSUF="_s.a"
4941         SLIBPREF=""
4942         SLIBSUF=".dll"
4943         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4944         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4945         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
4946             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
4947             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
4948             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
4949             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
4950         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
4951             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
4952         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4953         SLIB_INSTALL_LINKS=
4954         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
4955         enable dos_paths
4956         enable_weak os2threads
4957         ;;
4958     gnu/kfreebsd)
4959         add_cppflags -D_BSD_SOURCE
4960         ;;
4961     gnu)
4962         ;;
4963     qnx)
4964         add_cppflags -D_QNX_SOURCE
4965         network_extralibs="-lsocket"
4966         ;;
4967     symbian)
4968         SLIBSUF=".dll"
4969         enable dos_paths
4970         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4971         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4972         add_ldflags -Wl,--target1-abs,--no-undefined \
4973                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4974                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4975         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4976                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4977                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4978         ;;
4979     osf1)
4980         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4981         ;;
4982     minix)
4983         ;;
4984     none)
4985         ;;
4986     *)
4987         die "Unknown OS '$target_os'."
4988         ;;
4989 esac
4990
4991 # test if creating links works
4992 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
4993 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
4994 mkdir "$link_dest"
4995 $ln_s "$link_dest" "$link_name"
4996 touch "$link_dest/test_file"
4997 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
4998     # create link to source path
4999     [ -e src ] && rm src
5000     $ln_s "$source_path" src
5001     source_link=src
5002 else
5003     # creating directory links doesn't work
5004     # fall back to using the full source path
5005     source_link="$source_path"
5006 fi
5007 # cleanup
5008 rm -r "$link_dest"
5009 rm -r "$link_name"
5010
5011 # determine libc flavour
5012
5013 probe_libc(){
5014     pfx=$1
5015     pfx_no_=${pfx%_}
5016     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5017     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5018         eval ${pfx}libc_type=uclibc
5019         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5020     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5021         eval ${pfx}libc_type=glibc
5022         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5023     # MinGW headers can be installed on Cygwin, so check for newlib first.
5024     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5025         eval ${pfx}libc_type=newlib
5026         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5027     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5028     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5029         eval ${pfx}libc_type=mingw64
5030         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5031             add_compat msvcrt/snprintf.o
5032             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5033         fi
5034         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5035         eval test \$${pfx_no_}cc_type = "gcc" &&
5036             add_${pfx}cppflags -D__printf__=__gnu_printf__
5037     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5038          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5039         eval ${pfx}libc_type=mingw32
5040         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5041             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5042             die "ERROR: MinGW32 runtime version must be >= 3.15."
5043         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5044         check_${pfx}cpp_condition _mingw.h "defined(_WIN32_WINNT) && _WIN32_WINNT >= 0x0502" ||
5045             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
5046         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700__" &&
5047             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5048         eval test \$${pfx_no_}cc_type = "gcc" &&
5049             add_${pfx}cppflags -D__printf__=__gnu_printf__
5050     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5051         eval ${pfx}libc_type=msvcrt
5052         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5053             if [ "$pfx" = host_ ]; then
5054                 add_host_cppflags -Dsnprintf=_snprintf
5055             else
5056                 add_compat strtod.o strtod=avpriv_strtod
5057                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5058                                              _snprintf=avpriv_snprintf  \
5059                                              vsnprintf=avpriv_vsnprintf
5060             fi
5061         fi
5062         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5063         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5064         # 0x601 by default unless something else is set by the user.
5065         # This can easily lead to us detecting functions only present
5066         # in such new versions and producing binaries requiring windows 7.0.
5067         # Therefore explicitly set the default to XP unless the user has
5068         # set something else on the command line.
5069         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5070         # family. For these cases, configure is free to use any functions
5071         # found in the SDK headers by default. (Alternatively, we could force
5072         # _WIN32_WINNT to 0x0602 in that case.)
5073         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5074             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
5075 #ifdef WINAPI_FAMILY
5076 #include <winapifamily.h>
5077 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5078 #error not desktop
5079 #endif
5080 #endif
5081 EOF
5082         if [ "$pfx" = "" ]; then
5083             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5084             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5085         fi
5086     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5087         eval ${pfx}libc_type=klibc
5088     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5089         eval ${pfx}libc_type=bionic
5090     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5091         eval ${pfx}libc_type=solaris
5092         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5093     fi
5094     check_${pfx}cc <<EOF
5095 #include <time.h>
5096 void *v = localtime_r;
5097 EOF
5098 test "$?" != 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
5099 #include <time.h>
5100 void *v = localtime_r;
5101 EOF
5102
5103 }
5104
5105 probe_libc
5106 test -n "$libc_type" && enable libc_$libc_type
5107 probe_libc host_
5108 test -n "$host_libc_type" && enable host_libc_$host_libc_type
5109
5110 case $libc_type in
5111     bionic)
5112         add_compat strtod.o strtod=avpriv_strtod
5113         ;;
5114 esac
5115
5116 # hacks for compiler/libc/os combinations
5117
5118 if enabled_all tms470 libc_glibc; then
5119     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
5120     add_cppflags -D__USER_LABEL_PREFIX__=
5121     add_cppflags -D__builtin_memset=memset
5122     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
5123     add_cflags   -pds=48    # incompatible redefinition of macro
5124 fi
5125
5126 if enabled_all ccc libc_glibc; then
5127     add_ldflags -Wl,-z,now  # calls to libots crash without this
5128 fi
5129
5130 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5131     add_cppflags '-I\$(SRC_PATH)/compat/float'
5132
5133 esc(){
5134     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
5135 }
5136
5137 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
5138
5139 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5140
5141 set_default libdir
5142 : ${shlibdir_default:="$libdir"}
5143 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5144
5145 set_default $PATHS_LIST
5146 set_default nm
5147
5148 # we need to build at least one lib type
5149 if ! enabled_any static shared; then
5150     cat <<EOF
5151 At least one library type must be built.
5152 Specify --enable-static to build the static libraries or --enable-shared to
5153 build the shared libraries as well. To only build the shared libraries specify
5154 --disable-static in addition to --enable-shared.
5155 EOF
5156     exit 1
5157 fi
5158
5159 disabled optimizations || check_cflags -fomit-frame-pointer
5160
5161 enable_weak_pic() {
5162     disabled pic && return
5163     enable pic
5164     add_cppflags -DPIC
5165     case "$target_os" in
5166     mingw*|cygwin*)
5167         ;;
5168     *)
5169         add_cflags -fPIC
5170         ;;
5171     esac
5172     add_asflags  -fPIC
5173 }
5174
5175 enabled pic && enable_weak_pic
5176
5177 check_cc <<EOF || die "Symbol mangling check failed."
5178 int ff_extern;
5179 EOF
5180 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5181 extern_prefix=${sym%%ff_extern*}
5182
5183 check_cc <<EOF && enable_weak inline_asm
5184 void foo(void) { __asm__ volatile ("" ::); }
5185 EOF
5186
5187 _restrict=
5188 for restrict_keyword in restrict __restrict__ __restrict; do
5189     check_cc <<EOF && _restrict=$restrict_keyword && break
5190 void foo(char * $restrict_keyword p);
5191 EOF
5192 done
5193
5194 check_cc <<EOF && enable pragma_deprecated
5195 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
5196 EOF
5197
5198 check_cc <<EOF && enable attribute_packed
5199 struct { int x; } __attribute__((packed)) x;
5200 EOF
5201
5202 check_cc <<EOF && enable attribute_may_alias
5203 union { int x; } __attribute__((may_alias)) x;
5204 EOF
5205
5206 check_cc <<EOF || die "endian test failed"
5207 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5208 EOF
5209 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5210
5211 if ! enabled ppc64 || enabled bigendian; then
5212     disable vsx
5213 fi
5214
5215 check_gas() {
5216     log "check_gas using '$as' as AS"
5217     # :vararg is used on aarch64, arm and ppc altivec
5218     check_as <<EOF || return 1
5219 .macro m n, y:vararg=0
5220 \n: .int \y
5221 .endm
5222 m x
5223 EOF
5224     # .altmacro is only used in arm asm
5225     ! enabled arm || check_as <<EOF || return 1
5226 .altmacro
5227 EOF
5228     enable gnu_as
5229     return 0
5230 }
5231
5232 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5233     nogas=:
5234     enabled_any arm aarch64 && nogas=die
5235     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5236     as_noop=-v
5237
5238     case $as_type in
5239         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5240         gcc)  gaspp_as_type=gas ;;
5241         *)    gaspp_as_type=$as_type ;;
5242     esac
5243
5244     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5245
5246     test "${as#*gas-preprocessor.pl}" != "$as" ||
5247     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5248         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5249
5250     if ! check_gas ; then
5251         as=${gas:=$as}
5252         check_gas || \
5253             $nogas "GNU assembler not found, install/update gas-preprocessor"
5254     fi
5255
5256     check_as <<EOF && enable as_func
5257 .func test
5258 .endfunc
5259 EOF
5260 fi
5261
5262 check_inline_asm inline_asm_labels '"1:\n"'
5263
5264 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5265
5266 if enabled aarch64; then
5267     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5268     # internal assembler in clang 3.3 does not support this instruction
5269     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5270     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5271
5272     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5273
5274 elif enabled alpha; then
5275
5276     check_cflags -mieee
5277
5278 elif enabled arm; then
5279
5280     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
5281
5282     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
5283 float func(float a, float b){ return a+b; }
5284 EOF
5285
5286     enabled thumb && check_cflags -mthumb || check_cflags -marm
5287
5288     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
5289         enable vfp_args
5290     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5291         enable vfp_args
5292     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5293         case "${cross_prefix:-$cc}" in
5294             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
5295             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
5296 __asm__ (".eabi_attribute 28, 1");
5297 int main(void) { return 0; }
5298 EOF
5299         esac
5300         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5301     fi
5302
5303     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5304     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5305     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5306     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5307     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5308     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5309     enabled setend  && check_insn setend  'setend be'
5310
5311     [ $target_os = linux ] || [ $target_os = android ] ||
5312         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5313             $ARCH_EXT_LIST_ARM
5314
5315     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5316
5317     check_as <<EOF && enable as_dn_directive
5318 ra .dn d0.i16
5319 .unreq ra
5320 EOF
5321     check_as <<EOF && enable as_fpu_directive
5322 .fpu neon
5323 EOF
5324
5325     # llvm's integrated assembler supports .object_arch from llvm 3.5
5326     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
5327 .object_arch armv4
5328 EOF
5329
5330     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5331
5332 elif enabled mips; then
5333
5334     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5335     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5336     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5337
5338     # Enable minimum ISA based on selected options
5339     if enabled mips64; then
5340         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5341         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5342         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5343     else
5344         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5345         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5346         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5347         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5348     fi
5349
5350     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5351     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5352     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
5353     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5354     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5355
5356 elif enabled parisc; then
5357
5358     if enabled gcc; then
5359         case $($cc -dumpversion) in
5360             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5361         esac
5362     fi
5363
5364 elif enabled ppc; then
5365
5366     enable local_aligned_8 local_aligned_16 local_aligned_32
5367
5368     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5369     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5370     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5371     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5372
5373     # AltiVec flags: The FSF version of GCC differs from the Apple version
5374     if enabled altivec; then
5375         check_cflags -maltivec -mabi=altivec &&
5376         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
5377         check_cflags -faltivec
5378
5379         # check if our compiler supports Motorola AltiVec C API
5380         check_cc <<EOF || disable altivec
5381 $inc_altivec_h
5382 int main(void) {
5383     vector signed int v1 = (vector signed int) { 0 };
5384     vector signed int v2 = (vector signed int) { 1 };
5385     v1 = vec_add(v1, v2);
5386     return 0;
5387 }
5388 EOF
5389
5390         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5391     fi
5392
5393     if enabled vsx; then
5394         check_cflags -mvsx &&
5395         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
5396     fi
5397
5398     if enabled power8; then
5399         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
5400     fi
5401
5402 elif enabled x86; then
5403
5404     check_builtin rdtsc    intrin.h   "__rdtsc()"
5405     check_builtin mm_empty mmintrin.h "_mm_empty()"
5406
5407     enable local_aligned_8 local_aligned_16 local_aligned_32
5408
5409     # check whether EBP is available on x86
5410     # As 'i' is stored on the stack, this program will crash
5411     # if the base pointer is used to access it because the
5412     # base pointer is cleared in the inline assembly code.
5413     check_exec_crash <<EOF && enable ebp_available
5414 volatile int i=0;
5415 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5416 return i;
5417 EOF
5418
5419     # check whether EBX is available on x86
5420     check_inline_asm ebx_available '""::"b"(0)' &&
5421         check_inline_asm ebx_available '"":::"%ebx"'
5422
5423     # check whether xmm clobbers are supported
5424     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5425
5426     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5427         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5428
5429     # check whether binutils is new enough to compile SSSE3/MMXEXT
5430     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5431     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5432
5433     if ! disabled_any asm mmx yasm; then
5434         if check_cmd $yasmexe --version; then
5435             enabled x86_64 && yasm_extra="-m amd64"
5436             yasm_debug="-g dwarf2"
5437         elif check_cmd nasm -v; then
5438             yasmexe=nasm
5439             yasm_debug="-g -F dwarf"
5440             if enabled x86_64; then
5441                 case "$objformat" in
5442                     elf)   objformat=elf64 ;;
5443                     win32) objformat=win64 ;;
5444                 esac
5445             fi
5446         fi
5447
5448         YASMFLAGS="-f $objformat $yasm_extra"
5449         enabled pic               && append YASMFLAGS "-DPIC"
5450         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
5451         case "$objformat" in
5452             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
5453         esac
5454
5455         check_yasm "movbe ecx, [5]" && enable yasm ||
5456             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
5457         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
5458         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
5459         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
5460         check_yasm "CPU amdnop" || disable cpunop
5461     fi
5462
5463     case "$cpu" in
5464         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5465             disable fast_clz
5466         ;;
5467     esac
5468
5469 fi
5470
5471 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
5472
5473 check_ldflags -Wl,--as-needed
5474 check_ldflags -Wl,-z,noexecstack
5475
5476 if check_func dlopen && check_func dlsym; then
5477     ldl=
5478 elif check_func dlopen -ldl && check_func dlsym -ldl; then
5479     ldl=-ldl
5480 fi
5481
5482 avisynth_demuxer_extralibs='$ldl'
5483 cuda_extralibs='$ldl'
5484 decklink_outdev_extralibs="$decklink_outdev_extralibs $ldl"
5485 decklink_indev_extralibs="$decklink_indev_extralibs $ldl"
5486 frei0r_filter_extralibs='$ldl'
5487 frei0r_src_filter_extralibs='$ldl'
5488 ladspa_filter_extralibs='$ldl'
5489 nvenc_extralibs='$ldl'
5490 coreimage_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5491 coreimagesrc_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5492
5493 if ! disabled network; then
5494     check_func getaddrinfo $network_extralibs
5495     check_func inet_aton $network_extralibs
5496
5497     check_type netdb.h "struct addrinfo"
5498     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5499     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5500     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5501     check_type poll.h "struct pollfd"
5502     check_type netinet/sctp.h "struct sctp_event_subscribe"
5503     check_struct "sys/socket.h" "struct msghdr" msg_flags
5504     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5505     check_type netinet/in.h "struct sockaddr_in6"
5506     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5507     check_type "sys/types.h sys/socket.h" socklen_t
5508
5509     # Prefer arpa/inet.h over winsock2
5510     if check_header arpa/inet.h ; then
5511         check_func closesocket
5512     elif check_header winsock2.h ; then
5513         check_func_headers winsock2.h closesocket -lws2 &&
5514             network_extralibs="-lws2" ||
5515         { check_func_headers winsock2.h closesocket -lws2_32 &&
5516             network_extralibs="-lws2_32"; } || disable winsock2_h network
5517         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5518
5519         check_type ws2tcpip.h socklen_t
5520         check_type ws2tcpip.h "struct addrinfo"
5521         check_type ws2tcpip.h "struct group_source_req"
5522         check_type ws2tcpip.h "struct ip_mreq_source"
5523         check_type ws2tcpip.h "struct ipv6_mreq"
5524         check_type winsock2.h "struct pollfd"
5525         check_struct winsock2.h "struct sockaddr" sa_len
5526         check_type ws2tcpip.h "struct sockaddr_in6"
5527         check_type ws2tcpip.h "struct sockaddr_storage"
5528     else
5529         disable network
5530     fi
5531 fi
5532
5533 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5534 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5535 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5536 check_builtin sarestart signal.h "SA_RESTART"
5537 check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" -lpthread
5538 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5539 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5540 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5541 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5542
5543 case "$custom_allocator" in
5544     jemalloc)
5545         # jemalloc by default does not use a prefix
5546         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5547     ;;
5548     tcmalloc)
5549         require_pkg_config libtcmalloc gperftools/tcmalloc.h tc_malloc
5550         malloc_prefix=tc_
5551     ;;
5552 esac
5553
5554 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5555 check_func  ${malloc_prefix}memalign            && enable memalign
5556 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5557
5558 check_func  access
5559 check_func_headers stdlib.h arc4random
5560 check_func_headers time.h clock_gettime ||
5561     { check_lib time.h clock_gettime -lrt && LIBRT="-lrt"; }
5562 check_func  fcntl
5563 check_func  fork
5564 check_func  gethrtime
5565 check_func  getopt
5566 check_func  getrusage
5567 check_func  gettimeofday
5568 check_func  isatty
5569 check_func  mach_absolute_time
5570 check_func  mkstemp
5571 check_func  mmap
5572 check_func  mprotect
5573 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5574 check_func_headers time.h nanosleep ||
5575     { check_lib time.h nanosleep -lrt && LIBRT="-lrt"; }
5576 check_func  sched_getaffinity
5577 check_func  setrlimit
5578 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5579 check_func  strerror_r
5580 check_func  sysconf
5581 check_func  sysctl
5582 check_func  usleep
5583
5584 check_func_headers conio.h kbhit
5585 check_func_headers io.h setmode
5586 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5587 check_func_headers stdlib.h getenv
5588 check_func_headers sys/stat.h lstat
5589
5590 check_func_headers windows.h CoTaskMemFree -lole32
5591 check_func_headers windows.h GetProcessAffinityMask
5592 check_func_headers windows.h GetProcessTimes
5593 check_func_headers windows.h GetSystemTimeAsFileTime
5594 check_func_headers windows.h LoadLibrary
5595 check_func_headers windows.h MapViewOfFile
5596 check_func_headers windows.h PeekNamedPipe
5597 check_func_headers windows.h SetConsoleTextAttribute
5598 check_func_headers windows.h SetConsoleCtrlHandler
5599 check_func_headers windows.h Sleep
5600 check_func_headers windows.h VirtualAlloc
5601 check_struct windows.h "CONDITION_VARIABLE" Ptr
5602 check_func_headers glob.h glob
5603 enabled xlib &&
5604     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5605
5606 check_header AudioToolbox/AudioToolbox.h
5607 check_header direct.h
5608 check_header dirent.h
5609 check_header dlfcn.h
5610 check_header d3d11.h
5611 check_header dxva.h
5612 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5613 check_header io.h
5614 check_header libcrystalhd/libcrystalhd_if.h
5615 check_header mach/mach_time.h
5616 check_header malloc.h
5617 check_header net/udplite.h
5618 check_header poll.h
5619 check_header sys/mman.h
5620 check_header sys/param.h
5621 check_header sys/resource.h
5622 check_header sys/select.h
5623 check_header sys/time.h
5624 check_header sys/un.h
5625 check_header termios.h
5626 check_header unistd.h
5627 check_header valgrind/valgrind.h
5628 check_header VideoDecodeAcceleration/VDADecoder.h
5629 check_header VideoToolbox/VideoToolbox.h
5630 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5631 enabled videotoolbox && check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferColorPrimaries_ITU_R_2020 -framework CoreVideo
5632 check_header windows.h
5633 check_header X11/extensions/XvMClib.h
5634 check_header asm/types.h
5635
5636 # it seems there are versions of clang in some distros that try to use the
5637 # gcc headers, which explodes for stdatomic
5638 # so we also check that atomics actually work here
5639 check_builtin stdatomic_h stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0)"
5640
5641 check_lib "windows.h shellapi.h" CommandLineToArgvW   -lshell32
5642 check_lib "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
5643 check_lib "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
5644
5645 check_lib "CoreServices/CoreServices.h" UTGetOSTypeFromString "-framework CoreServices"
5646
5647 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5648
5649 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5650 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5651 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5652 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5653 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5654
5655 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
5656 check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
5657 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
5658 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
5659 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5660 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5661 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
5662 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
5663
5664 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5665
5666 check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt
5667
5668 if ! disabled w32threads && ! enabled pthreads; then
5669     check_func_headers "windows.h process.h" _beginthreadex &&
5670         enable w32threads || disable w32threads
5671     if ! enabled w32threads && enabled winrt; then
5672         check_func_headers "windows.h" CreateThread &&
5673             enable w32threads || disable w32threads
5674     fi
5675 fi
5676
5677 # check for some common methods of building with pthread support
5678 # do this before the optional library checks as some of them require pthreads
5679 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5680     enable pthreads
5681     if check_func pthread_join -pthread && check_func pthread_create -pthread; then
5682         add_cflags -pthread
5683         add_extralibs -pthread
5684     elif check_func pthread_join -pthreads && check_func pthread_create -pthreads; then
5685         add_cflags -pthreads
5686         add_extralibs -pthreads
5687     elif check_func pthread_join -ldl -pthread && check_func pthread_create -ldl -pthread; then
5688         add_cflags -ldl -pthread
5689         add_extralibs -ldl -pthread
5690     elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
5691         add_extralibs -lpthreadGC2
5692     elif check_lib pthread.h pthread_join -lpthread && check_lib pthread.h pthread_create -lpthread; then
5693         :
5694     elif ! check_func pthread_join && ! check_func pthread_create; then
5695         disable pthreads
5696     fi
5697     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5698 fi
5699
5700
5701 if enabled pthreads; then
5702   check_func pthread_cancel
5703 fi
5704
5705 enabled pthreads &&
5706     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)"
5707
5708 disabled  zlib || check_lib  zlib.h      zlibVersion    -lz    || disable  zlib
5709 disabled bzlib || check_lib bzlib.h BZ2_bzlibVersion    -lbz2  || disable bzlib
5710 disabled  lzma || check_lib  lzma.h lzma_version_number -llzma || disable lzma
5711
5712 check_lib math.h sin -lm && LIBM="-lm"
5713 disabled crystalhd || check_lib "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd || disable crystalhd
5714
5715 atan2f_args=2
5716 copysign_args=2
5717 hypot_args=2
5718 ldexpf_args=2
5719 powf_args=2
5720
5721 for func in $MATH_FUNCS; do
5722     eval check_mathfunc $func \${${func}_args:-1} $LIBM
5723 done
5724
5725 for func in $COMPLEX_FUNCS; do
5726     eval check_complexfunc $func \${${func}_args:-1}
5727 done
5728
5729 # these are off by default, so fail if requested and not available
5730 enabled avfoundation_indev && { check_header_objcc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
5731 enabled avfoundation_indev && { check_lib CoreGraphics/CoreGraphics.h CGGetActiveDisplayList -framework CoreGraphics ||
5732                                 check_lib ApplicationServices/ApplicationServices.h CGGetActiveDisplayList -framework ApplicationServices; }
5733 enabled cuda              && check_header cuda.h # this is not a dependency
5734 enabled cuvid             && { enabled cuda ||
5735                                die "ERROR: CUVID requires CUDA"; }
5736 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5737 enabled coreimage_filter  && { check_header_objcc QuartzCore/CoreImage.h || disable coreimage_filter; }
5738 enabled coreimagesrc_filter && { check_header_objcc QuartzCore/CoreImage.h || disable coreimagesrc_filter; }
5739 enabled decklink          && { { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; } &&
5740                                { check_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a060100" || die "ERROR: Decklink API version must be >= 10.6.1."; } }
5741 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
5742 enabled gmp               && require gmp gmp.h mpz_export -lgmp
5743 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
5744 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads &&
5745                                check_lib "dlfcn.h" dlopen -ldl || die "ERROR: jni not found"; }
5746 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
5747 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5748 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
5749 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
5750 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
5751 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5752                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
5753                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5754 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
5755 enabled libdc1394         && require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new
5756 enabled libfdk_aac        && { use_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5757                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5758                                  warn "using libfdk without pkg-config"; } }
5759 flite_extralibs="-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"
5760 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
5761 enabled fontconfig        && enable libfontconfig
5762 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
5763 enabled libfreetype       && require_pkg_config freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
5764 enabled libfribidi        && require_pkg_config fribidi fribidi.h fribidi_version_info
5765 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
5766 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5767                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
5768                                done || die "ERROR: libgsm not found"; }
5769 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
5770 enabled libkvazaar        && require_pkg_config "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
5771 enabled libmfx            && require_pkg_config libmfx "mfx/mfxvideo.h" MFXInit
5772 enabled libmodplug        && require_pkg_config libmodplug libmodplug/modplug.h ModPlug_Load
5773 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5774 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
5775 enabled libnpp            && require libnpp npp.h nppGetLibVersion -lnppi -lnppc
5776 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5777 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5778 enabled libopencv         && { check_header opencv2/core/core_c.h &&
5779                                { use_pkg_config opencv opencv2/core/core_c.h cvCreateImageHeader ||
5780                                  require opencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
5781                                require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader; }
5782 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
5783 enabled libopenjpeg       && { { check_lib openjpeg-2.1/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5784                                check_lib openjpeg-2.1/openjpeg.h opj_version -lopenjp2 ||
5785                                { check_lib openjpeg-2.0/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5786                                { check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5787                                { check_lib openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5788                                die "ERROR: libopenjpeg not found"; }
5789 enabled libopenmpt        && require_pkg_config "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create
5790 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
5791 enabled libpulse          && require_pkg_config libpulse pulse/pulseaudio.h pa_context_new
5792 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
5793 enabled librubberband     && require_pkg_config "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new
5794 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
5795 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
5796 enabled libsmbclient      && { use_pkg_config smbclient libsmbclient.h smbc_init ||
5797                                require smbclient libsmbclient.h smbc_init -lsmbclient; }
5798 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy
5799 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr && LIBSOXR="-lsoxr"
5800 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
5801 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
5802 enabled libtesseract      && require_pkg_config tesseract tesseract/capi.h TessBaseAPICreate
5803 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
5804 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
5805                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
5806                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
5807 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
5808 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
5809 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
5810 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
5811
5812 enabled libvpx            && {
5813     enabled libvpx_vp8_decoder && {
5814         use_pkg_config "vpx >= 0.9.1" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
5815             check_lib "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
5816                 die "ERROR: libvpx decoder version must be >=0.9.1";
5817     }
5818     enabled libvpx_vp8_encoder && {
5819         use_pkg_config "vpx >= 0.9.7" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
5820             check_lib "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
5821                 die "ERROR: libvpx encoder version must be >=0.9.7";
5822     }
5823     enabled libvpx_vp9_decoder && {
5824         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
5825             check_lib "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx ||
5826                 disable libvpx_vp9_decoder;
5827     }
5828     enabled libvpx_vp9_encoder && {
5829         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
5830             check_lib "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx ||
5831                 disable libvpx_vp9_encoder;
5832     }
5833     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
5834         die "libvpx enabled but no supported decoders found"
5835     fi
5836 }
5837
5838 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
5839 enabled libwebp           && {
5840     enabled libwebp_encoder      && require_pkg_config "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
5841     enabled libwebp_anim_encoder && { use_pkg_config "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit || disable libwebp_anim_encoder; } }
5842 enabled libx264           && { use_pkg_config x264 "stdint.h x264.h" x264_encoder_encode ||
5843                                { require libx264 "stdint.h x264.h" x264_encoder_encode -lx264 &&
5844                                  warn "using libx264 without pkg-config"; } } &&
5845                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
5846                                die "ERROR: libx264 must be installed and version must be >= 0.118."; } &&
5847                              { check_cpp_condition x264.h "X264_MPEG2" &&
5848                                enable libx262; }
5849 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
5850                              { check_cpp_condition x265.h "X265_BUILD >= 68" ||
5851                                die "ERROR: libx265 version must be >= 68."; }
5852 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode -lxavs
5853 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
5854 enabled libzimg           && require_pkg_config "zimg >= 2.3.0" zimg.h zimg_get_api_version
5855 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
5856 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi &&
5857                              { check_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
5858                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
5859 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
5860 enabled mmal              && { check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
5861                                { ! enabled cross_compile &&
5862                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
5863                                  add_ldflags -L/opt/vc/lib/ &&
5864                                  check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
5865                                die "ERROR: mmal not found" &&
5866                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
5867 enabled netcdf            && require_pkg_config netcdf netcdf.h nc_inq_libvers
5868 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
5869                                check_lib 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
5870                                die "ERROR: openal not found"; } &&
5871                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
5872                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
5873 enabled opencl            && { check_lib OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
5874                                check_lib CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
5875                                die "ERROR: opencl not found"; } &&
5876                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
5877                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
5878                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
5879 enabled opengl            && { check_lib GL/glx.h glXGetProcAddress "-lGL" ||
5880                                check_lib windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
5881                                check_lib OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
5882                                check_lib ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
5883                                die "ERROR: opengl not found."
5884                              }
5885 enabled omx_rpi           && { check_header OMX_Core.h ||
5886                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_header OMX_Core.h ; } ||
5887                                die "ERROR: OpenMAX IL headers not found"; }
5888 enabled omx               && { check_header OMX_Core.h || die "ERROR: OpenMAX IL headers not found"; }
5889 enabled openssl           && { use_pkg_config openssl openssl/ssl.h OPENSSL_init_ssl ||
5890                                use_pkg_config openssl openssl/ssl.h SSL_library_init ||
5891                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
5892                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
5893                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
5894                                die "ERROR: openssl not found"; }
5895 enabled qtkit_indev      && { check_header_objcc QTKit/QTKit.h || disable qtkit_indev; }
5896
5897 if enabled gcrypt; then
5898     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
5899     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
5900         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
5901         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
5902         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
5903             die "ERROR: gcrypt not found"
5904         add_cflags $gcrypt_cflags && add_extralibs $gcrypt_extralibs
5905     else
5906         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
5907     fi
5908 fi
5909
5910 disabled sdl && disable sdl2
5911 if ! disabled sdl2; then
5912     SDL2_CONFIG="${cross_prefix}sdl2-config"
5913     if check_pkg_config sdl2 SDL_events.h SDL_PollEvent; then
5914         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
5915         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
5916         check_func SDL_Init $sdl2_extralibs $sdl2_cflags && enable sdl2
5917     else
5918       if "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
5919         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
5920         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
5921         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
5922         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
5923         check_func SDL_Init $sdl2_extralibs $sdl2_cflags && enable sdl2
5924       fi
5925     fi
5926     if test $target_os = "mingw32"; then
5927         sdl2_extralibs="$sdl2_extralibs -mconsole"
5928     fi
5929 fi
5930 enabled sdl2 && enable sdl && add_cflags $sdl2_cflags && add_extralibs $sdl2_extralibs
5931
5932 disabled securetransport || { check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5933     check_lib "Security/SecureTransport.h Security/Security.h" "SSLCreateContext SecItemImport" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5934     enable securetransport; }
5935
5936 disabled schannel || { check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
5937                        check_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" && enable schannel && add_extralibs -lsecur32; }
5938
5939 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
5940 enabled makeinfo \
5941     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
5942     && enable makeinfo_html || disable makeinfo_html
5943 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
5944 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
5945 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
5946 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
5947
5948 check_header linux/fb.h
5949 check_header linux/videodev.h
5950 check_header linux/videodev2.h
5951 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5952
5953 check_header sys/videoio.h
5954 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5955
5956 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
5957 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
5958 # w32api 3.12 had it defined wrong
5959 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
5960
5961 check_type "dshow.h" IBaseFilter
5962
5963 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
5964 { check_header dev/bktr/ioctl_meteor.h &&
5965   check_header dev/bktr/ioctl_bt848.h; } ||
5966 { check_header machine/ioctl_meteor.h &&
5967   check_header machine/ioctl_bt848.h; } ||
5968 { check_header dev/video/meteor/ioctl_meteor.h &&
5969   check_header dev/video/bktr/ioctl_bt848.h; } ||
5970 check_header dev/ic/bt8xx.h
5971
5972 if check_struct sys/soundcard.h audio_buf_info bytes; then
5973     enable_safe sys/soundcard.h
5974 else
5975     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
5976     #include <sys/soundcard.h>
5977     audio_buf_info abc;
5978 EOF
5979 fi
5980 check_header soundcard.h
5981
5982 enabled_any alsa_indev alsa_outdev &&
5983     check_lib alsa/asoundlib.h snd_pcm_htimestamp -lasound && enable alsa
5984
5985 enabled jack_indev && check_lib jack/jack.h jack_client_open -ljack && enable jack &&
5986     check_func jack_port_get_latency_range -ljack
5987
5988 enabled_any sndio_indev sndio_outdev && check_lib sndio.h sio_open -lsndio && enable sndio
5989
5990 if enabled libcdio; then
5991     check_lib "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
5992     check_lib "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
5993     die "ERROR: No usable libcdio/cdparanoia found"
5994 fi
5995
5996 if ! disabled libxcb; then
5997     check_pkg_config "xcb >= 1.4" xcb/xcb.h xcb_connect || {
5998         enabled libxcb && die "ERROR: libxcb >= 1.4 not found";
5999     } && enable libxcb
6000
6001 if enabled libxcb; then
6002     disabled libxcb_shm || {
6003         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
6004             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
6005         } && check_header sys/shm.h && enable libxcb_shm; }
6006
6007     disabled libxcb_xfixes || {
6008         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
6009             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
6010         } && enable libxcb_xfixes; }
6011
6012     disabled libxcb_shape || {
6013         check_pkg_config xcb-shape xcb/shape.h xcb_shape_get_rectangles || {
6014             enabled libxcb_shape && die "ERROR: libxcb_shape not found";
6015         } && enable libxcb_shape; }
6016
6017     add_cflags $xcb_cflags $xcb_shm_cflags $xcb_xfixes_cflags $xcb_shape_cflags
6018     add_extralibs $xcb_extralibs $xcb_shm_extralibs $xcb_xfixes_extralibs $xcb_shape_extralibs
6019 fi
6020 fi
6021
6022 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6023
6024 enabled dxva2api_h &&
6025     check_cc <<EOF && enable dxva2api_cobj
6026 #define _WIN32_WINNT 0x0600
6027 #define COBJMACROS
6028 #include <windows.h>
6029 #include <d3d9.h>
6030 #include <dxva2api.h>
6031 int main(void) { IDirectXVideoDecoder *o = NULL; IDirectXVideoDecoder_Release(o); return 0; }
6032 EOF
6033
6034 enabled vaapi &&
6035     check_lib va/va.h vaInitialize -lva ||
6036     disable vaapi
6037
6038 enabled vaapi &&
6039     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
6040     disable vaapi
6041
6042 enabled vaapi &&
6043     check_lib "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm &&
6044     enable vaapi_drm
6045
6046 enabled vaapi &&
6047     check_lib "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 -lX11 &&
6048     enable vaapi_x11
6049
6050 enabled vdpau &&
6051     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
6052     disable vdpau
6053
6054 enabled vdpau &&
6055     check_lib "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11 &&
6056     enable vdpau_x11
6057
6058 if enabled x86; then
6059     case $target_os in
6060         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6061             ;;
6062         *)
6063             disable cuda cuvid nvenc
6064             ;;
6065     esac
6066 else
6067     disable cuda cuvid nvenc
6068 fi
6069
6070 enabled nvenc &&
6071     check_cc -I$source_path <<EOF || disable nvenc
6072 #include "compat/nvenc/nvEncodeAPI.h"
6073 NV_ENCODE_API_FUNCTION_LIST flist;
6074 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6075 int main(void) { return 0; }
6076 EOF
6077
6078 # Funny iconv installations are not unusual, so check it after all flags have been set
6079 disabled iconv || check_func_headers iconv.h iconv || check_lib iconv.h iconv -liconv || disable iconv
6080
6081 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6082
6083 # add some useful compiler flags if supported
6084 check_cflags -Wdeclaration-after-statement
6085 check_cflags -Wall
6086 check_cflags -Wdisabled-optimization
6087 check_cflags -Wpointer-arith
6088 check_cflags -Wredundant-decls
6089 check_cflags -Wwrite-strings
6090 check_cflags -Wtype-limits
6091 check_cflags -Wundef
6092 check_cflags -Wmissing-prototypes
6093 check_cflags -Wno-pointer-to-int-cast
6094 check_cflags -Wstrict-prototypes
6095 check_cflags -Wempty-body
6096
6097 if enabled extra_warnings; then
6098     check_cflags -Wcast-qual
6099     check_cflags -Wextra
6100     check_cflags -Wpedantic
6101 fi
6102
6103 check_disable_warning(){
6104     warning_flag=-W${1#-Wno-}
6105     test_cflags $warning_flag && add_cflags $1
6106 }
6107
6108 check_disable_warning -Wno-parentheses
6109 check_disable_warning -Wno-switch
6110 check_disable_warning -Wno-format-zero-length
6111 check_disable_warning -Wno-pointer-sign
6112 check_disable_warning -Wno-unused-const-variable
6113
6114 check_disable_warning_headers(){
6115     warning_flag=-W${1#-Wno-}
6116     test_cflags $warning_flag && add_cflags_headers $1
6117 }
6118
6119 check_disable_warning_headers -Wno-deprecated-declarations
6120 check_disable_warning_headers -Wno-unused-variable
6121
6122 # add some linker flags
6123 check_ldflags -Wl,--warn-common
6124 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6125 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
6126 enabled rpath && add_ldlibflags -Wl,-rpath,$libdir
6127 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6128
6129 # add some strip flags
6130 # -wN '..@*' is more selective than -x, but not available everywhere.
6131 check_stripflags -wN \'..@*\' || check_stripflags -x
6132
6133 enabled neon_clobber_test &&
6134     check_ldflags -Wl,--wrap,avcodec_open2              \
6135                   -Wl,--wrap,avcodec_decode_audio4      \
6136                   -Wl,--wrap,avcodec_decode_video2      \
6137                   -Wl,--wrap,avcodec_decode_subtitle2   \
6138                   -Wl,--wrap,avcodec_encode_audio2      \
6139                   -Wl,--wrap,avcodec_encode_video2      \
6140                   -Wl,--wrap,avcodec_encode_subtitle    \
6141                   -Wl,--wrap,avcodec_send_packet        \
6142                   -Wl,--wrap,avcodec_receive_packet     \
6143                   -Wl,--wrap,avcodec_send_frame         \
6144                   -Wl,--wrap,avcodec_receive_frame      \
6145                   -Wl,--wrap,swr_convert                \
6146                   -Wl,--wrap,avresample_convert ||
6147     disable neon_clobber_test
6148
6149 enabled xmm_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                   -Wl,--wrap,sws_scale ||
6164     disable xmm_clobber_test
6165
6166 check_ld "cc" <<EOF && enable proper_dce
6167 extern const int array[512];
6168 static inline int func(void) { return array[0]; }
6169 int main(void) { return 0; }
6170 EOF
6171
6172 if enabled proper_dce; then
6173     echo "X { local: *; };" > $TMPV
6174     if test_ldflags -Wl,${version_script},$TMPV; then
6175         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6176         check_cc <<EOF && enable symver_asm_label
6177 void ff_foo(void) __asm__ ("av_foo@VERSION");
6178 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6179 EOF
6180         check_cc <<EOF && enable symver_gnu_asm
6181 __asm__(".symver ff_foo,av_foo@VERSION");
6182 void ff_foo(void) {}
6183 EOF
6184     fi
6185 fi
6186
6187 if [ -z "$optflags" ]; then
6188     if enabled small; then
6189         optflags=$cflags_size
6190     elif enabled optimizations; then
6191         optflags=$cflags_speed
6192     else
6193         optflags=$cflags_noopt
6194     fi
6195 fi
6196
6197 check_optflags(){
6198     check_cflags "$@"
6199     enabled lto && check_ldflags "$@"
6200 }
6201
6202
6203 if enabled lto; then
6204     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6205     check_cflags  -flto
6206     check_ldflags -flto $cpuflags
6207     disable inline_asm_direct_symbol_refs
6208 fi
6209
6210 check_optflags $optflags
6211 check_optflags -fno-math-errno
6212 check_optflags -fno-signed-zeros
6213
6214 enabled ftrapv && check_cflags -ftrapv
6215
6216 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6217 int x;
6218 EOF
6219
6220
6221 if enabled icc; then
6222     # Just warnings, no remarks
6223     check_cflags -w1
6224     # -wd: Disable following warnings
6225     # 144, 167, 556: -Wno-pointer-sign
6226     # 188: enumerated type mixed with another type
6227     # 1292: attribute "foo" ignored
6228     # 1419: external declaration in primary source file
6229     # 10006: ignoring unknown option -fno-signed-zeros
6230     # 10148: ignoring unknown option -Wno-parentheses
6231     # 10156: ignoring option '-W'; no argument required
6232     # 13200: No EMMS instruction before call to function
6233     # 13203: No EMMS instruction before return from function
6234     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6235     # 11030: Warning unknown option --as-needed
6236     # 10156: ignoring option '-export'; no argument required
6237     check_ldflags -wd10156,11030
6238     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6239     enable ebp_available
6240     # The test above does not test linking
6241     enabled lto && disable symver_asm_label
6242     if enabled x86_32; then
6243         icc_version=$($cc -dumpversion)
6244         test ${icc_version%%.*} -ge 11 &&
6245             check_cflags -falign-stack=maintain-16-byte ||
6246             disable aligned_stack
6247     fi
6248 elif enabled ccc; then
6249     # disable some annoying warnings
6250     add_cflags -msg_disable bitnotint
6251     add_cflags -msg_disable mixfuncvoid
6252     add_cflags -msg_disable nonstandcast
6253     add_cflags -msg_disable unsupieee
6254 elif enabled gcc; then
6255     check_optflags -fno-tree-vectorize
6256     check_cflags -Werror=format-security
6257     check_cflags -Werror=implicit-function-declaration
6258     check_cflags -Werror=missing-prototypes
6259     check_cflags -Werror=return-type
6260     check_cflags -Werror=vla
6261     check_cflags -Wformat
6262     check_cflags -fdiagnostics-color=auto
6263     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6264 elif enabled llvm_gcc; then
6265     check_cflags -mllvm -stack-alignment=16
6266 elif enabled clang; then
6267     check_cflags -mllvm -stack-alignment=16
6268     check_cflags -mstack-alignment=16
6269     check_cflags -Qunused-arguments
6270     check_cflags -Werror=implicit-function-declaration
6271     check_cflags -Werror=missing-prototypes
6272     check_cflags -Werror=return-type
6273 elif enabled cparser; then
6274     add_cflags -Wno-missing-variable-declarations
6275     add_cflags -Wno-empty-statement
6276 elif enabled armcc; then
6277     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6278     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6279     # 2523: use of inline assembly is deprecated
6280     add_cflags -W${armcc_opt},--diag_suppress=2523
6281     add_cflags -W${armcc_opt},--diag_suppress=1207
6282     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6283     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6284     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6285     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6286 elif enabled tms470; then
6287     add_cflags -pds=824 -pds=837
6288     disable inline_asm
6289 elif enabled pathscale; then
6290     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6291 elif enabled_any msvc icl; then
6292     enabled x86_32 && disable aligned_stack
6293     enabled_all x86_32 debug && add_cflags -Oy-
6294     enabled debug && add_ldflags -debug
6295     enable pragma_deprecated
6296     if enabled icl; then
6297         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6298         # (correctly) on icl 13.x.
6299         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6300             add_cflags -Qansi-alias
6301         # Some inline asm is not compilable in debug
6302         if enabled debug; then
6303             disable ebp_available
6304             disable ebx_available
6305         fi
6306     fi
6307     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6308     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
6309     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6310     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6311     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6312     # MSVC 2013 and newer can handle it fine.
6313     # If this declspec fails, force including stdlib.h before the restrict redefinition
6314     # happens in config.h.
6315     if [ $_restrict != restrict ]; then
6316         check_cc <<EOF || add_cflags -FIstdlib.h
6317 __declspec($_restrict) void* foo(int);
6318 EOF
6319     fi
6320     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6321     # Issue has been fixed in MSVC v19.00.24218.
6322     check_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6323         check_cflags -d2SSAOptimizer-
6324     # enable utf-8 source processing on VS2015 U2 and newer
6325     check_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6326         add_cflags -utf-8
6327 fi
6328
6329 for pfx in "" host_; do
6330     varname=${pfx%_}cc_type
6331     eval "type=\$$varname"
6332     if [ $type = "msvc" ]; then
6333         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6334 static inline int foo(int a) { return a; }
6335 EOF
6336     fi
6337 done
6338
6339 case $as_type in
6340     clang)
6341         add_asflags -Qunused-arguments
6342     ;;
6343 esac
6344
6345 case $ld_type in
6346     clang)
6347         check_ldflags -Qunused-arguments
6348     ;;
6349 esac
6350
6351 case $target_os in
6352     osf1)
6353         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
6354     ;;
6355 esac
6356
6357 enable frame_thread_encoder
6358
6359 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6360
6361 check_deps $CONFIG_LIST       \
6362            $CONFIG_EXTRA      \
6363            $HAVE_LIST         \
6364            $ALL_COMPONENTS    \
6365
6366 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"
6367
6368
6369 if test $target_os = "haiku"; then
6370     disable memalign
6371     disable posix_memalign
6372 fi
6373
6374 enabled_all dxva2 dxva2api_cobj CoTaskMemFree &&
6375     prepend ffmpeg_extralibs $($ldflags_filter "-lole32") &&
6376     enable dxva2_lib
6377
6378 # add_dep lib dep
6379 # -> enable ${lib}_deps_${dep}
6380 # -> add $dep to ${lib}_deps only once
6381 add_dep() {
6382     lib=$1
6383     dep=$2
6384     enabled "${lib}_deps_${dep}" && return 0
6385     enable  "${lib}_deps_${dep}"
6386     prepend "${lib}_deps" $dep
6387 }
6388
6389 # merge deps lib components
6390 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
6391 merge_deps() {
6392     lib=$1
6393     shift
6394     for comp in $*; do
6395         enabled $comp || continue
6396         eval "dep=\"\$${comp}_deps\""
6397         for d in $dep; do
6398             add_dep $lib $d
6399         done
6400     done
6401 }
6402
6403 merge_deps libavfilter $FILTER_LIST
6404
6405 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6406
6407 for thread in $THREADS_LIST; do
6408     if enabled $thread; then
6409         test -n "$thread_type" &&
6410             die "ERROR: Only one thread type must be selected." ||
6411             thread_type="$thread"
6412     fi
6413 done
6414
6415 if disabled stdatomic_h; then
6416     if enabled atomics_gcc; then
6417         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6418     elif enabled atomics_win32; then
6419         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6420     elif enabled atomics_suncc; then
6421         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6422     elif enabled pthreads; then
6423         add_compat atomics/pthread/stdatomic.o
6424         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6425     else
6426         enabled threads && die "Threading is enabled, but no atomics are available"
6427         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6428     fi
6429 fi
6430
6431 # Check if requested libraries were found.
6432 for lib in $AUTODETECT_LIBS; do
6433     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6434 done
6435
6436 enabled zlib && add_cppflags -DZLIB_CONST
6437
6438 # conditional library dependencies, in linking order
6439 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6440 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6441 enabled aresample_filter    && prepend avfilter_deps "swresample"
6442 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6443 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6444 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6445 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6446 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6447 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6448 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6449 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6450 enabled pan_filter          && prepend avfilter_deps "swresample"
6451 enabled pp_filter           && prepend avfilter_deps "postproc"
6452 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6453 enabled resample_filter && prepend avfilter_deps "avresample"
6454 enabled sab_filter          && prepend avfilter_deps "swscale"
6455 enabled scale_filter    && prepend avfilter_deps "swscale"
6456 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6457 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6458 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6459 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6460 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6461 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6462 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6463 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6464 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6465
6466 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6467
6468 enabled opus_decoder    && prepend avcodec_deps "swresample"
6469
6470 expand_deps(){
6471     lib_deps=${1}_deps
6472     eval "deps=\$$lib_deps"
6473     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6474     unique $lib_deps
6475 }
6476
6477 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6478 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6479
6480 map 'expand_deps $v' $LIBRARY_LIST
6481
6482 license="LGPL version 2.1 or later"
6483 if enabled nonfree; then
6484     license="nonfree and unredistributable"
6485 elif enabled gplv3; then
6486     license="GPL version 3 or later"
6487 elif enabled lgplv3; then
6488     license="LGPL version 3 or later"
6489 elif enabled gpl; then
6490     license="GPL version 2 or later"
6491 fi
6492
6493 if test "$quiet" != "yes"; then
6494
6495 echo "install prefix            $prefix"
6496 echo "source path               $source_path"
6497 echo "C compiler                $cc"
6498 echo "C library                 $libc_type"
6499 if test "$host_cc" != "$cc"; then
6500     echo "host C compiler           $host_cc"
6501     echo "host C library            $host_libc_type"
6502 fi
6503 echo "ARCH                      $arch ($cpu)"
6504 if test "$build_suffix" != ""; then
6505     echo "build suffix              $build_suffix"
6506 fi
6507 if test "$progs_suffix" != ""; then
6508     echo "progs suffix              $progs_suffix"
6509 fi
6510 if test "$extra_version" != ""; then
6511     echo "version string suffix     $extra_version"
6512 fi
6513 echo "big-endian                ${bigendian-no}"
6514 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6515 if enabled x86; then
6516     echo "${yasmexe}                      ${yasm-no}"
6517     echo "MMX enabled               ${mmx-no}"
6518     echo "MMXEXT enabled            ${mmxext-no}"
6519     echo "3DNow! enabled            ${amd3dnow-no}"
6520     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6521     echo "SSE enabled               ${sse-no}"
6522     echo "SSSE3 enabled             ${ssse3-no}"
6523     echo "AESNI enabled             ${aesni-no}"
6524     echo "AVX enabled               ${avx-no}"
6525     echo "XOP enabled               ${xop-no}"
6526     echo "FMA3 enabled              ${fma3-no}"
6527     echo "FMA4 enabled              ${fma4-no}"
6528     echo "i686 features enabled     ${i686-no}"
6529     echo "CMOV is fast              ${fast_cmov-no}"
6530     echo "EBX available             ${ebx_available-no}"
6531     echo "EBP available             ${ebp_available-no}"
6532 fi
6533 if enabled aarch64; then
6534     echo "NEON enabled              ${neon-no}"
6535     echo "VFP enabled               ${vfp-no}"
6536 fi
6537 if enabled arm; then
6538     echo "ARMv5TE enabled           ${armv5te-no}"
6539     echo "ARMv6 enabled             ${armv6-no}"
6540     echo "ARMv6T2 enabled           ${armv6t2-no}"
6541     echo "VFP enabled               ${vfp-no}"
6542     echo "NEON enabled              ${neon-no}"
6543     echo "THUMB enabled             ${thumb-no}"
6544 fi
6545 if enabled mips; then
6546     echo "MIPS FPU enabled          ${mipsfpu-no}"
6547     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6548     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6549     echo "MIPS MSA enabled          ${msa-no}"
6550     echo "LOONGSON MMI enabled      ${mmi-no}"
6551 fi
6552 if enabled ppc; then
6553     echo "AltiVec enabled           ${altivec-no}"
6554     echo "VSX enabled               ${vsx-no}"
6555     echo "POWER8 enabled            ${power8-no}"
6556     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6557     echo "dcbzl available           ${dcbzl-no}"
6558 fi
6559 echo "debug symbols             ${debug-no}"
6560 echo "strip symbols             ${stripping-no}"
6561 echo "optimize for size         ${small-no}"
6562 echo "optimizations             ${optimizations-no}"
6563 echo "static                    ${static-no}"
6564 echo "shared                    ${shared-no}"
6565 echo "postprocessing support    ${postproc-no}"
6566 echo "network support           ${network-no}"
6567 echo "threading support         ${thread_type-no}"
6568 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6569 echo "texi2html enabled         ${texi2html-no}"
6570 echo "perl enabled              ${perl-no}"
6571 echo "pod2man enabled           ${pod2man-no}"
6572 echo "makeinfo enabled          ${makeinfo-no}"
6573 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6574 test -n "$random_seed" &&
6575     echo "random seed               ${random_seed}"
6576 echo
6577
6578 echo "External libraries:"
6579 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_in_columns
6580 echo
6581
6582 echo "External libraries providing hardware acceleration:"
6583 print_enabled '' $HWACCEL_LIBRARY_LIST | print_in_columns
6584 echo
6585
6586 echo "Libraries:"
6587 print_enabled '' $LIBRARY_LIST | print_in_columns
6588 echo
6589
6590 echo "Programs:"
6591 print_enabled '' $PROGRAM_LIST | print_in_columns
6592 echo
6593
6594 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6595     echo "Enabled ${type}s:"
6596     eval list=\$$(toupper $type)_LIST
6597     print_enabled '_*' $list | print_in_columns
6598     echo
6599 done
6600
6601 echo "License: $license"
6602
6603 echo "Creating configuration files ..."
6604
6605 fi # test "$quiet" != "yes"
6606
6607 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6608
6609 enabled stripping || strip="echo skipping strip"
6610
6611 config_files="$TMPH config.mak doc/config.texi"
6612
6613 cat > config.mak <<EOF
6614 # Automatically generated by configure - do not modify!
6615 ifndef FFMPEG_CONFIG_MAK
6616 FFMPEG_CONFIG_MAK=1
6617 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6618 prefix=$prefix
6619 LIBDIR=\$(DESTDIR)$libdir
6620 SHLIBDIR=\$(DESTDIR)$shlibdir
6621 INCDIR=\$(DESTDIR)$incdir
6622 BINDIR=\$(DESTDIR)$bindir
6623 DATADIR=\$(DESTDIR)$datadir
6624 DOCDIR=\$(DESTDIR)$docdir
6625 MANDIR=\$(DESTDIR)$mandir
6626 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6627 INSTALL_NAME_DIR=$install_name_dir
6628 SRC_PATH=$source_path
6629 SRC_LINK=$source_link
6630 ifndef MAIN_MAKEFILE
6631 SRC_PATH:=\$(SRC_PATH:.%=..%)
6632 endif
6633 CC_IDENT=$cc_ident
6634 ARCH=$arch
6635 INTRINSICS=$intrinsics
6636 CC=$cc
6637 CXX=$cxx
6638 AS=$as
6639 OBJCC=$objcc
6640 LD=$ld
6641 DEPCC=$dep_cc
6642 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6643 DEPAS=$as
6644 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6645 YASM=$yasmexe
6646 DEPYASM=$yasmexe
6647 AR=$ar
6648 ARFLAGS=$arflags
6649 AR_O=$ar_o
6650 RANLIB=$ranlib
6651 STRIP=$strip
6652 CP=cp -p
6653 LN_S=$ln_s
6654 CPPFLAGS=$CPPFLAGS
6655 CFLAGS=$CFLAGS
6656 CXXFLAGS=$CXXFLAGS
6657 OBJCFLAGS=$OBJCFLAGS
6658 ASFLAGS=$ASFLAGS
6659 AS_C=$AS_C
6660 AS_O=$AS_O
6661 OBJCC_C=$OBJCC_C
6662 OBJCC_E=$OBJCC_E
6663 OBJCC_O=$OBJCC_O
6664 CC_C=$CC_C
6665 CC_E=$CC_E
6666 CC_O=$CC_O
6667 CXX_C=$CXX_C
6668 CXX_O=$CXX_O
6669 LD_O=$LD_O
6670 LD_LIB=$LD_LIB
6671 LD_PATH=$LD_PATH
6672 DLLTOOL=$dlltool
6673 WINDRES=$windres
6674 DEPWINDRES=$dep_cc
6675 DOXYGEN=$doxygen
6676 LDFLAGS=$LDFLAGS
6677 LDEXEFLAGS=$LDEXEFLAGS
6678 LDLIBFLAGS=$LDLIBFLAGS
6679 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
6680 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
6681 YASMFLAGS=$YASMFLAGS
6682 BUILDSUF=$build_suffix
6683 PROGSSUF=$progs_suffix
6684 FULLNAME=$FULLNAME
6685 LIBPREF=$LIBPREF
6686 LIBSUF=$LIBSUF
6687 LIBNAME=$LIBNAME
6688 SLIBPREF=$SLIBPREF
6689 SLIBSUF=$SLIBSUF
6690 EXESUF=$EXESUF
6691 EXTRA_VERSION=$extra_version
6692 CCDEP=$CCDEP
6693 CXXDEP=$CXXDEP
6694 CCDEP_FLAGS=$CCDEP_FLAGS
6695 ASDEP=$ASDEP
6696 ASDEP_FLAGS=$ASDEP_FLAGS
6697 CC_DEPFLAGS=$CC_DEPFLAGS
6698 AS_DEPFLAGS=$AS_DEPFLAGS
6699 HOSTCC=$host_cc
6700 HOSTLD=$host_ld
6701 HOSTCFLAGS=$host_cflags
6702 HOSTCPPFLAGS=$host_cppflags
6703 HOSTEXESUF=$HOSTEXESUF
6704 HOSTLDFLAGS=$host_ldflags
6705 HOSTEXTRALIBS=$host_extralibs
6706 DEPHOSTCC=$host_cc
6707 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
6708 HOSTCCDEP=$HOSTCCDEP
6709 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
6710 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
6711 HOSTCC_C=$HOSTCC_C
6712 HOSTCC_O=$HOSTCC_O
6713 HOSTLD_O=$HOSTLD_O
6714 TARGET_EXEC=$target_exec $target_exec_args
6715 TARGET_PATH=$target_path
6716 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
6717 CFLAGS-ffplay=${sdl2_cflags}
6718 CFLAGS_HEADERS=$CFLAGS_HEADERS
6719 ZLIB=$($ldflags_filter -lz)
6720 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
6721 EXTRALIBS=$extralibs
6722 COMPAT_OBJS=$compat_objs
6723 INSTALL=$install
6724 LIBTARGET=${LIBTARGET}
6725 SLIBNAME=${SLIBNAME}
6726 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
6727 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
6728 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
6729 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
6730 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
6731 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
6732 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
6733 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
6734 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
6735 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
6736 NOREDZONE_FLAGS=$noredzone_flags
6737 EOF
6738
6739 get_version(){
6740     lcname=lib${1}
6741     name=$(toupper $lcname)
6742     file=$source_path/$lcname/version.h
6743     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
6744     enabled raise_major && eval ${name}_VERSION_MAJOR=$((${name}_VERSION_MAJOR+100))
6745     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
6746     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
6747     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
6748     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
6749 }
6750
6751 map 'get_version $v' $LIBRARY_LIST
6752
6753 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> config.mak' $LIBRARY_LIST
6754
6755 print_program_extralibs(){
6756     eval "program_extralibs=\$${1}_extralibs"
6757     eval echo "EXTRALIBS-${1}=${program_extralibs}" >> config.mak
6758 }
6759
6760 map 'print_program_extralibs $v' $PROGRAM_LIST
6761
6762 cat > $TMPH <<EOF
6763 /* Automatically generated by configure - do not modify! */
6764 #ifndef FFMPEG_CONFIG_H
6765 #define FFMPEG_CONFIG_H
6766 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
6767 #define FFMPEG_LICENSE "$(c_escape $license)"
6768 #define CONFIG_THIS_YEAR 2017
6769 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
6770 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
6771 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
6772 #define av_restrict $_restrict
6773 #define EXTERN_PREFIX "${extern_prefix}"
6774 #define EXTERN_ASM ${extern_prefix}
6775 #define BUILDSUF "$build_suffix"
6776 #define SLIBSUF "$SLIBSUF"
6777 #define HAVE_MMX2 HAVE_MMXEXT
6778 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
6779 EOF
6780
6781 test -n "$assert_level" &&
6782     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
6783
6784 test -n "$malloc_prefix" &&
6785     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
6786
6787 if enabled yasm; then
6788     append config_files $TMPASM
6789     printf '' >$TMPASM
6790 fi
6791
6792 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
6793
6794
6795 mkdir -p doc
6796 mkdir -p tests
6797 mkdir -p tests/api
6798 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
6799
6800 print_config ARCH_   "$config_files" $ARCH_LIST
6801 print_config HAVE_   "$config_files" $HAVE_LIST
6802 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
6803                                      $CONFIG_EXTRA      \
6804                                      $ALL_COMPONENTS    \
6805
6806 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
6807 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
6808
6809 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
6810 cp_if_changed $TMPH config.h
6811 touch .config
6812
6813 enabled yasm && cp_if_changed $TMPASM config.asm
6814
6815 cat > $TMPH <<EOF
6816 /* Generated by ffconf */
6817 #ifndef AVUTIL_AVCONFIG_H
6818 #define AVUTIL_AVCONFIG_H
6819 EOF
6820
6821 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
6822
6823 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
6824
6825 cp_if_changed $TMPH libavutil/avconfig.h
6826
6827 # generate the lists of enabled components
6828 print_enabled_components(){
6829     file=$1
6830     struct_name=$2
6831     name=$3
6832     shift 3
6833     echo "static const $struct_name *$name[] = {" > $TMPH
6834     for c in $*; do
6835         enabled $c && printf "    &ff_%s,\n" $c >> $TMPH
6836     done
6837     echo "    NULL };" >> $TMPH
6838     cp_if_changed $TMPH $file
6839 }
6840
6841 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
6842 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
6843
6844 if test -n "$WARNINGS"; then
6845     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
6846     enabled fatal_warnings && exit 1
6847 fi
6848
6849 # build pkg-config files
6850
6851 lib_version(){
6852     eval printf "\"lib${1}${build_suffix} >= \$LIB$(toupper ${1})_VERSION, \""
6853 }
6854
6855 pkgconfig_generate(){
6856     name=$1
6857     shortname=${name#lib}${build_suffix}
6858     comment=$2
6859     version=$3
6860     libs=$4
6861     requires=$(map 'lib_version $v' $(eval echo \$${name#lib}_deps))
6862     requires=${requires%, }
6863     enabled ${name#lib} || return 0
6864     mkdir -p $name
6865     cat <<EOF > $name/$name${build_suffix}.pc
6866 prefix=$prefix
6867 exec_prefix=\${prefix}
6868 libdir=$libdir
6869 includedir=$incdir
6870
6871 Name: $name
6872 Description: $comment
6873 Version: $version
6874 Requires: $(enabled shared || echo $requires)
6875 Requires.private: $(enabled shared && echo $requires)
6876 Conflicts:
6877 Libs: -L\${libdir} $(enabled rpath && echo "-Wl,-rpath,\${libdir}") -l${shortname} $(enabled shared || echo $libs)
6878 Libs.private: $(enabled shared && echo $libs)
6879 Cflags: -I\${includedir}
6880 EOF
6881
6882 mkdir -p doc/examples/pc-uninstalled
6883 includedir=${source_path}
6884 [ "$includedir" = . ] && includedir="\${pcfiledir}/../../.."
6885     cat <<EOF > doc/examples/pc-uninstalled/${name}-uninstalled.pc
6886 prefix=
6887 exec_prefix=
6888 libdir=\${pcfiledir}/../../../$name
6889 includedir=${includedir}
6890
6891 Name: $name
6892 Description: $comment
6893 Version: $version
6894 Requires: $requires
6895 Conflicts:
6896 Libs: -L\${libdir} -Wl,-rpath,\${libdir} -l${shortname} $(enabled shared || echo $libs)
6897 Cflags: -I\${includedir}
6898 EOF
6899 }
6900
6901 pkgconfig_generate libavutil     "FFmpeg utility library"               "$LIBAVUTIL_VERSION"     "$LIBRT $LIBM"
6902 pkgconfig_generate libavcodec    "FFmpeg codec library"                 "$LIBAVCODEC_VERSION"    "$extralibs"
6903 pkgconfig_generate libavformat   "FFmpeg container format library"      "$LIBAVFORMAT_VERSION"   "$extralibs"
6904 pkgconfig_generate libavdevice   "FFmpeg device handling library"       "$LIBAVDEVICE_VERSION"   "$extralibs"
6905 pkgconfig_generate libavfilter   "FFmpeg audio/video filtering library" "$LIBAVFILTER_VERSION"   "$extralibs"
6906 pkgconfig_generate libpostproc   "FFmpeg postprocessing library"        "$LIBPOSTPROC_VERSION"   ""
6907 pkgconfig_generate libavresample "Libav audio resampling library"       "$LIBAVRESAMPLE_VERSION" "$LIBM"
6908 pkgconfig_generate libswscale    "FFmpeg image rescaling library"       "$LIBSWSCALE_VERSION"    "$LIBM"
6909 pkgconfig_generate libswresample "FFmpeg audio resampling library"      "$LIBSWRESAMPLE_VERSION" "$LIBM $LIBSOXR"