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_cxxflags(){
 832     append CXXFLAGS $($cflags_filter "$@")
 833 }
 834
 835 add_asflags(){
 836     append ASFLAGS $($asflags_filter "$@")
 837 }
 838
 839 add_objcflags(){
 840     append OBJCFLAGS $($objcflags_filter "$@")
 841 }
 842
 843 add_ldflags(){
 844     append LDFLAGS $($ldflags_filter "$@")
 845 }
 846
 847 add_ldexeflags(){
 848     append LDEXEFLAGS $($ldflags_filter "$@")
 849 }
 850
 851 add_ldlibflags(){
 852     append LDLIBFLAGS $($ldflags_filter "$@")
 853 }
 854
 855 add_stripflags(){
 856     append ASMSTRIPFLAGS "$@"
 857 }
 858
 859 add_extralibs(){
 860     prepend extralibs $($ldflags_filter "$@")
 861 }
 862
 863 add_host_cppflags(){
 864     append host_cppflags "$@"
 865 }
 866
 867 add_host_cflags(){
 868     append host_cflags $($host_cflags_filter "$@")
 869 }
 870
 871 add_host_ldflags(){
 872     append host_ldflags $($host_ldflags_filter "$@")
 873 }
 874
 875 add_compat(){
 876     append compat_objs $1
 877     shift
 878     map 'add_cppflags -D$v' "$@"
 879 }
 880
 881 check_cmd(){
 882     log "$@"
 883     "$@" >> $logfile 2>&1
 884 }
 885
 886 check_stat(){
 887     log check_stat "$@"
 888     stat "$1" >> $logfile 2>&1
 889 }
 890
 891 cc_o(){
 892     eval printf '%s\\n' $CC_O
 893 }
 894
 895 cc_e(){
 896     eval printf '%s\\n' $CC_E
 897 }
 898
 899 check_cc(){
 900     log check_cc "$@"
 901     cat > $TMPC
 902     log_file $TMPC
 903     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 904 }
 905
 906 check_cxx(){
 907     log check_cxx "$@"
 908     cat > $TMPCPP
 909     log_file $TMPCPP
 910     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 911 }
 912
 913 check_objcc(){
 914     log check_objcc "$@"
 915     cat > $TMPM
 916     log_file $TMPM
 917     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
 918 }
 919
 920 check_cpp(){
 921     log check_cpp "$@"
 922     cat > $TMPC
 923     log_file $TMPC
 924     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 925 }
 926
 927 as_o(){
 928     eval printf '%s\\n' $AS_O
 929 }
 930
 931 check_as(){
 932     log check_as "$@"
 933     cat > $TMPS
 934     log_file $TMPS
 935     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 936 }
 937
 938 check_inline_asm(){
 939     log check_inline_asm "$@"
 940     name="$1"
 941     code="$2"
 942     shift 2
 943     disable $name
 944     check_cc "$@" <<EOF && enable $name
 945 void foo(void){ __asm__ volatile($code); }
 946 EOF
 947 }
 948
 949 check_inline_asm_flags(){
 950     log check_inline_asm_flags "$@"
 951     name="$1"
 952     code="$2"
 953     flags=''
 954     shift 2
 955     while [ "$1" != "" ]; do
 956       append flags $1
 957       shift
 958     done;
 959     disable $name
 960     cat > $TMPC <<EOF
 961 void foo(void){ __asm__ volatile($code); }
 962 EOF
 963     log_file $TMPC
 964     check_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
 965     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
 966 }
 967
 968 check_insn(){
 969     log check_insn "$@"
 970     check_inline_asm ${1}_inline "\"$2\""
 971     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 972 }
 973
 974 check_yasm(){
 975     log check_yasm "$@"
 976     echo "$1" > $TMPS
 977     log_file $TMPS
 978     shift 1
 979     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
 980 }
 981
 982 ld_o(){
 983     eval printf '%s\\n' $LD_O
 984 }
 985
 986 check_ld(){
 987     log check_ld "$@"
 988     type=$1
 989     shift 1
 990     flags=$(filter_out '-l*|*.so' $@)
 991     libs=$(filter '-l*|*.so' $@)
 992     check_$type $($cflags_filter $flags) || return
 993     flags=$($ldflags_filter $flags)
 994     libs=$($ldflags_filter $libs)
 995     check_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
 996 }
 997
 998 print_include(){
 999     hdr=$1
1000     test "${hdr%.h}" = "${hdr}" &&
1001         echo "#include $hdr"    ||
1002         echo "#include <$hdr>"
1003 }
1004
1005 check_code(){
1006     log check_code "$@"
1007     check=$1
1008     headers=$2
1009     code=$3
1010     shift 3
1011     {
1012         for hdr in $headers; do
1013             print_include $hdr
1014         done
1015         echo "int main(void) { $code; return 0; }"
1016     } | check_$check "$@"
1017 }
1018
1019 check_cppflags(){
1020     log check_cppflags "$@"
1021     check_cpp "$@" <<EOF && append CPPFLAGS "$@"
1022 int x;
1023 EOF
1024 }
1025
1026 test_cflags(){
1027     log test_cflags "$@"
1028     set -- $($cflags_filter "$@")
1029     check_cc "$@" <<EOF
1030 int x;
1031 EOF
1032 }
1033
1034 check_cflags(){
1035     log check_cflags "$@"
1036     test_cflags "$@" && add_cflags "$@"
1037 }
1038
1039 check_cxxflags(){
1040     log check_cxxflags "$@"
1041     set -- $($cflags_filter "$@")
1042     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
1043 int x;
1044 EOF
1045 }
1046
1047 test_objcflags(){
1048     log test_objcflags "$@"
1049     set -- $($objcflags_filter "$@")
1050     check_objcc "$@" <<EOF
1051 int x;
1052 EOF
1053 }
1054
1055 check_objcflags(){
1056     log check_objcflags "$@"
1057     test_objcflags "$@" && add_objcflags "$@"
1058 }
1059
1060 test_ldflags(){
1061     log test_ldflags "$@"
1062     check_ld "cc" "$@" <<EOF
1063 int main(void){ return 0; }
1064 EOF
1065 }
1066
1067 check_ldflags(){
1068     log check_ldflags "$@"
1069     test_ldflags "$@" && add_ldflags "$@"
1070 }
1071
1072 test_stripflags(){
1073     log test_stripflags "$@"
1074     # call check_cc to get a fresh TMPO
1075     check_cc <<EOF
1076 int main(void) { return 0; }
1077 EOF
1078     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1079 }
1080
1081 check_stripflags(){
1082     log check_stripflags "$@"
1083     test_stripflags "$@" && add_stripflags "$@"
1084 }
1085
1086 check_header(){
1087     log check_header "$@"
1088     header=$1
1089     shift
1090     disable_safe $header
1091     check_cpp "$@" <<EOF && enable_safe $header
1092 #include <$header>
1093 int x;
1094 EOF
1095 }
1096
1097 check_header_objcc(){
1098     log check_header_objcc "$@"
1099     rm -f -- "$TMPO"
1100     header=$1
1101     shift
1102     disable_safe $header
1103     {
1104        echo "#include <$header>"
1105        echo "int main(void) { return 0; }"
1106     } | check_objcc && check_stat "$TMPO" && enable_safe $headers
1107 }
1108
1109 check_func(){
1110     log check_func "$@"
1111     func=$1
1112     shift
1113     disable $func
1114     check_ld "cc" "$@" <<EOF && enable $func
1115 extern int $func();
1116 int main(void){ $func(); }
1117 EOF
1118 }
1119
1120 check_complexfunc(){
1121     log check_complexfunc "$@"
1122     func=$1
1123     narg=$2
1124     shift 2
1125     test $narg = 2 && args="f, g" || args="f * I"
1126     disable $func
1127     check_ld "cc" "$@" <<EOF && enable $func
1128 #include <complex.h>
1129 #include <math.h>
1130 float foo(complex float f, complex float g) { return $func($args); }
1131 int main(void){ return (int) foo; }
1132 EOF
1133 }
1134
1135 check_mathfunc(){
1136     log check_mathfunc "$@"
1137     func=$1
1138     narg=$2
1139     shift 2
1140     test $narg = 2 && args="f, g" || args="f"
1141     disable $func
1142     check_ld "cc" "$@" <<EOF && enable $func
1143 #include <math.h>
1144 float foo(float f, float g) { return $func($args); }
1145 int main(void){ return (int) foo; }
1146 EOF
1147 }
1148
1149 check_func_headers(){
1150     log check_func_headers "$@"
1151     headers=$1
1152     funcs=$2
1153     shift 2
1154     {
1155         for hdr in $headers; do
1156             print_include $hdr
1157         done
1158         echo "#include <stdint.h>"
1159         for func in $funcs; do
1160             echo "long check_$func(void) { return (long) $func; }"
1161         done
1162         echo "int main(void) { int ret = 0;"
1163         # LTO could optimize out the test functions without this
1164         for func in $funcs; do
1165             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1166         done
1167         echo "return ret; }"
1168     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1169 }
1170
1171 check_class_headers_cpp(){
1172     log check_class_headers_cpp "$@"
1173     headers=$1
1174     classes=$2
1175     shift 2
1176     {
1177         for hdr in $headers; do
1178             echo "#include <$hdr>"
1179         done
1180         echo "int main(void) { "
1181         i=1
1182         for class in $classes; do
1183             echo "$class obj$i;"
1184             i=$(expr $i + 1)
1185         done
1186         echo "return 0; }"
1187     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1188 }
1189
1190 check_cpp_condition(){
1191     log check_cpp_condition "$@"
1192     header=$1
1193     condition=$2
1194     shift 2
1195     check_cpp "$@" <<EOF
1196 #include <$header>
1197 #if !($condition)
1198 #error "unsatisfied condition: $condition"
1199 #endif
1200 EOF
1201 }
1202
1203 test_cflags_cc(){
1204     log test_cflags_cc "$@"
1205     flags=$1
1206     header=$2
1207     condition=$3
1208     shift 3
1209     set -- $($cflags_filter "$flags")
1210     check_cc "$@" <<EOF
1211 #include <$header>
1212 #if !($condition)
1213 #error "unsatisfied condition: $condition"
1214 #endif
1215 EOF
1216 }
1217
1218 check_lib(){
1219     log check_lib "$@"
1220     headers="$1"
1221     funcs="$2"
1222     shift 2
1223     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1224 }
1225
1226 check_lib_cpp(){
1227     log check_lib_cpp "$@"
1228     headers="$1"
1229     classes="$2"
1230     shift 2
1231     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1232 }
1233
1234 check_pkg_config(){
1235     log check_pkg_config "$@"
1236     pkg_version="$1"
1237     pkg="${1%% *}"
1238     headers="$2"
1239     funcs="$3"
1240     shift 3
1241     check_cmd $pkg_config --exists --print-errors $pkg_version || return
1242     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1243     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1244     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1245         set_safe "${pkg}_cflags" $pkg_cflags   &&
1246         set_safe "${pkg}_libs"   $pkg_libs
1247 }
1248
1249 check_exec(){
1250     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1251 }
1252
1253 check_exec_crash(){
1254     log check_exec_crash "$@"
1255     code=$(cat)
1256
1257     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1258     # are safe but may not be available everywhere.  Thus we use
1259     # raise(SIGTERM) instead.  The check is run in a subshell so we
1260     # can redirect the "Terminated" message from the shell.  SIGBUS
1261     # is not defined by standard C so it is used conditionally.
1262
1263     (check_exec "$@") >> $logfile 2>&1 <<EOF
1264 #include <signal.h>
1265 static void sighandler(int sig){
1266     raise(SIGTERM);
1267 }
1268 int foo(void){
1269     $code
1270 }
1271 int (*func_ptr)(void) = foo;
1272 int main(void){
1273     signal(SIGILL, sighandler);
1274     signal(SIGFPE, sighandler);
1275     signal(SIGSEGV, sighandler);
1276 #ifdef SIGBUS
1277     signal(SIGBUS, sighandler);
1278 #endif
1279     return func_ptr();
1280 }
1281 EOF
1282 }
1283
1284 check_type(){
1285     log check_type "$@"
1286     headers=$1
1287     type=$2
1288     shift 2
1289     disable_safe "$type"
1290     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1291 }
1292
1293 check_struct(){
1294     log check_struct "$@"
1295     headers=$1
1296     struct=$2
1297     member=$3
1298     shift 3
1299     disable_safe "${struct}_${member}"
1300     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1301         enable_safe "${struct}_${member}"
1302 }
1303
1304 check_builtin(){
1305     log check_builtin "$@"
1306     name=$1
1307     headers=$2
1308     builtin=$3
1309     shift 3
1310     disable "$name"
1311     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1312 }
1313
1314 check_compile_assert(){
1315     log check_compile_assert "$@"
1316     name=$1
1317     headers=$2
1318     condition=$3
1319     shift 3
1320     disable "$name"
1321     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1322 }
1323
1324 require(){
1325     log require "$@"
1326     name_version="$1"
1327     headers="$2"
1328     func="$3"
1329     shift 3
1330     check_lib "$headers" $func "$@" || die "ERROR: $name_version not found"
1331 }
1332
1333 require_cpp(){
1334     name="$1"
1335     headers="$2"
1336     classes="$3"
1337     shift 3
1338     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1339 }
1340
1341 use_pkg_config(){
1342     log use_pkg_config "$@"
1343     pkg="$1"
1344     check_pkg_config "$@" || return 1
1345     add_cflags    $(get_safe "${pkg}_cflags")
1346     add_extralibs $(get_safe "${pkg}_libs")
1347 }
1348
1349 require_pkg_config(){
1350     use_pkg_config "$@" || die "ERROR: $pkg not found using pkg-config$pkg_config_fail_message"
1351 }
1352
1353 require_libfreetype(){
1354     log require_libfreetype "$@"
1355     pkg="freetype2"
1356     check_cmd $pkg_config --exists --print-errors $pkg \
1357       || die "ERROR: $pkg not found"
1358     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1359     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1360     {
1361         echo "#include <ft2build.h>"
1362         echo "#include FT_FREETYPE_H"
1363         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1364         echo "int main(void) { return 0; }"
1365     } | check_ld "cc" $pkg_cflags $pkg_libs \
1366       && set_safe "${pkg}_cflags" $pkg_cflags \
1367       && set_safe "${pkg}_libs"   $pkg_libs \
1368       || die "ERROR: $pkg not found"
1369     add_cflags    $(get_safe "${pkg}_cflags")
1370     add_extralibs $(get_safe "${pkg}_libs")
1371 }
1372
1373 hostcc_e(){
1374     eval printf '%s\\n' $HOSTCC_E
1375 }
1376
1377 hostcc_o(){
1378     eval printf '%s\\n' $HOSTCC_O
1379 }
1380
1381 check_host_cc(){
1382     log check_host_cc "$@"
1383     cat > $TMPC
1384     log_file $TMPC
1385     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1386 }
1387
1388 check_host_cpp(){
1389     log check_host_cpp "$@"
1390     cat > $TMPC
1391     log_file $TMPC
1392     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1393 }
1394
1395 check_host_cppflags(){
1396     log check_host_cppflags "$@"
1397     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1398 int x;
1399 EOF
1400 }
1401
1402 check_host_cflags(){
1403     log check_host_cflags "$@"
1404     set -- $($host_cflags_filter "$@")
1405     check_host_cc "$@" <<EOF && append host_cflags "$@"
1406 int x;
1407 EOF
1408 }
1409
1410 check_host_cpp_condition(){
1411     log check_host_cpp_condition "$@"
1412     header=$1
1413     condition=$2
1414     shift 2
1415     check_host_cpp "$@" <<EOF
1416 #include <$header>
1417 #if !($condition)
1418 #error "unsatisfied condition: $condition"
1419 #endif
1420 EOF
1421 }
1422
1423 cp_if_changed(){
1424     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1425     mkdir -p "$(dirname $2)"
1426     cp -f "$1" "$2"
1427 }
1428
1429 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1430 # system-dependent things.
1431
1432 AVCODEC_COMPONENTS="
1433     bsfs
1434     decoders
1435     encoders
1436     hwaccels
1437     parsers
1438 "
1439
1440 AVDEVICE_COMPONENTS="
1441     indevs
1442     outdevs
1443 "
1444 AVFILTER_COMPONENTS="
1445     filters
1446 "
1447 AVFORMAT_COMPONENTS="
1448     demuxers
1449     muxers
1450     protocols
1451 "
1452
1453 AVRESAMPLE_COMPONENTS=""
1454 AVUTIL_COMPONENTS=""
1455
1456 COMPONENT_LIST="
1457     $AVCODEC_COMPONENTS
1458     $AVDEVICE_COMPONENTS
1459     $AVFILTER_COMPONENTS
1460     $AVFORMAT_COMPONENTS
1461     $AVRESAMPLE_COMPONENTS
1462     $AVUTIL_COMPONENTS
1463 "
1464
1465 EXAMPLE_LIST="
1466     avio_dir_cmd_example
1467     avio_reading_example
1468     decode_audio_example
1469     decode_video_example
1470     demuxing_decoding_example
1471     encode_audio_example
1472     encode_video_example
1473     extract_mvs_example
1474     filter_audio_example
1475     filtering_audio_example
1476     filtering_video_example
1477     http_multiclient_example
1478     metadata_example
1479     muxing_example
1480     qsvdec_example
1481     remuxing_example
1482     resampling_audio_example
1483     scaling_video_example
1484     transcode_aac_example
1485     transcoding_example
1486 "
1487 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1488     bzlib
1489     iconv
1490     libxcb
1491     libxcb_shm
1492     libxcb_shape
1493     libxcb_xfixes
1494     lzma
1495     schannel
1496     sdl
1497     sdl2
1498     securetransport
1499     xlib
1500     zlib
1501 "
1502
1503 EXTERNAL_LIBRARY_GPL_LIST="
1504     avisynth
1505     frei0r
1506     libcdio
1507     librubberband
1508     libvidstab
1509     libx264
1510     libx265
1511     libxavs
1512     libxvid
1513 "
1514
1515 EXTERNAL_LIBRARY_NONFREE_LIST="
1516     libfdk_aac
1517     openssl
1518 "
1519
1520 EXTERNAL_LIBRARY_VERSION3_LIST="
1521     gmp
1522     libopencore_amrnb
1523     libopencore_amrwb
1524     libvo_amrwbenc
1525 "
1526
1527 EXTERNAL_LIBRARY_GPLV3_LIST="
1528     libsmbclient
1529 "
1530
1531 EXTERNAL_LIBRARY_LIST="
1532     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1533     $EXTERNAL_LIBRARY_GPL_LIST
1534     $EXTERNAL_LIBRARY_NONFREE_LIST
1535     $EXTERNAL_LIBRARY_VERSION3_LIST
1536     $EXTERNAL_LIBRARY_GPLV3_LIST
1537     chromaprint
1538     crystalhd
1539     decklink
1540     gcrypt
1541     gnutls
1542     jni
1543     ladspa
1544     libass
1545     libbluray
1546     libbs2b
1547     libcaca
1548     libcelt
1549     libdc1394
1550     libflite
1551     libfontconfig
1552     libfreetype
1553     libfribidi
1554     libgme
1555     libgsm
1556     libiec61883
1557     libilbc
1558     libkvazaar
1559     libmodplug
1560     libmp3lame
1561     libnut
1562     libopencv
1563     libopenh264
1564     libopenjpeg
1565     libopenmpt
1566     libopus
1567     libpulse
1568     librtmp
1569     libschroedinger
1570     libshine
1571     libsmbclient
1572     libsnappy
1573     libsoxr
1574     libspeex
1575     libssh
1576     libtesseract
1577     libtheora
1578     libtwolame
1579     libv4l2
1580     libvorbis
1581     libvpx
1582     libwavpack
1583     libwebp
1584     libzimg
1585     libzmq
1586     libzvbi
1587     mediacodec
1588     netcdf
1589     openal
1590     opencl
1591     opengl
1592     videotoolbox
1593 "
1594 HWACCEL_AUTODETECT_LIBRARY_LIST="
1595     audiotoolbox
1596     cuda
1597     cuvid
1598     d3d11va
1599     dxva2
1600     nvenc
1601     vaapi
1602     vda
1603     vdpau
1604     videotoolbox_hwaccel
1605     xvmc
1606 "
1607
1608 HWACCEL_LIBRARY_NONFREE_LIST="
1609     libnpp
1610 "
1611
1612 HWACCEL_LIBRARY_LIST="
1613     $HWACCEL_AUTODETECT_LIBRARY_LIST
1614     $HWACCEL_LIBRARY_NONFREE_LIST
1615     libmfx
1616     mmal
1617     omx
1618 "
1619
1620 DOCUMENT_LIST="
1621     doc
1622     htmlpages
1623     manpages
1624     podpages
1625     txtpages
1626 "
1627
1628 FEATURE_LIST="
1629     ftrapv
1630     gray
1631     hardcoded_tables
1632     omx_rpi
1633     runtime_cpudetect
1634     safe_bitstream_reader
1635     shared
1636     small
1637     static
1638     swscale_alpha
1639 "
1640
1641 LIBRARY_LIST="
1642     avcodec
1643     avdevice
1644     avfilter
1645     avformat
1646     avresample
1647     avutil
1648     postproc
1649     swresample
1650     swscale
1651 "
1652
1653 LICENSE_LIST="
1654     gpl
1655     nonfree
1656     version3
1657 "
1658
1659 PROGRAM_LIST="
1660     ffplay
1661     ffprobe
1662     ffserver
1663     ffmpeg
1664 "
1665
1666 SUBSYSTEM_LIST="
1667     dct
1668     dwt
1669     error_resilience
1670     faan
1671     fast_unaligned
1672     fft
1673     lsp
1674     lzo
1675     mdct
1676     pixelutils
1677     network
1678     rdft
1679 "
1680
1681 CONFIG_LIST="
1682     $COMPONENT_LIST
1683     $DOCUMENT_LIST
1684     $EXAMPLE_LIST
1685     $EXTERNAL_LIBRARY_LIST
1686     $HWACCEL_LIBRARY_LIST
1687     $FEATURE_LIST
1688     $LICENSE_LIST
1689     $LIBRARY_LIST
1690     $PROGRAM_LIST
1691     $SUBSYSTEM_LIST
1692     fontconfig
1693     memory_poisoning
1694     neon_clobber_test
1695     pic
1696     raise_major
1697     thumb
1698     valgrind_backtrace
1699     xmm_clobber_test
1700 "
1701
1702 THREADS_LIST="
1703     pthreads
1704     os2threads
1705     w32threads
1706 "
1707
1708 ATOMICS_LIST="
1709     atomics_gcc
1710     atomics_suncc
1711     atomics_win32
1712 "
1713
1714 AUTODETECT_LIBS="
1715     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1716     $HWACCEL_AUTODETECT_LIBRARY_LIST
1717     $THREADS_LIST
1718 "
1719
1720 ARCH_LIST="
1721     aarch64
1722     alpha
1723     arm
1724     avr32
1725     avr32_ap
1726     avr32_uc
1727     bfin
1728     ia64
1729     m68k
1730     mips
1731     mips64
1732     parisc
1733     ppc
1734     ppc64
1735     s390
1736     sh4
1737     sparc
1738     sparc64
1739     tilegx
1740     tilepro
1741     tomi
1742     x86
1743     x86_32
1744     x86_64
1745 "
1746
1747 ARCH_EXT_LIST_ARM="
1748     armv5te
1749     armv6
1750     armv6t2
1751     armv8
1752     neon
1753     vfp
1754     vfpv3
1755     setend
1756 "
1757
1758 ARCH_EXT_LIST_MIPS="
1759     mipsfpu
1760     mips32r2
1761     mips32r5
1762     mips64r2
1763     mips32r6
1764     mips64r6
1765     mipsdsp
1766     mipsdspr2
1767     msa
1768 "
1769
1770 ARCH_EXT_LIST_LOONGSON="
1771     loongson2
1772     loongson3
1773     mmi
1774 "
1775
1776 ARCH_EXT_LIST_X86_SIMD="
1777     aesni
1778     amd3dnow
1779     amd3dnowext
1780     avx
1781     avx2
1782     fma3
1783     fma4
1784     mmx
1785     mmxext
1786     sse
1787     sse2
1788     sse3
1789     sse4
1790     sse42
1791     ssse3
1792     xop
1793 "
1794
1795 ARCH_EXT_LIST_PPC="
1796     altivec
1797     dcbzl
1798     ldbrx
1799     power8
1800     ppc4xx
1801     vsx
1802 "
1803
1804 ARCH_EXT_LIST_X86="
1805     $ARCH_EXT_LIST_X86_SIMD
1806     cpunop
1807     i686
1808 "
1809
1810 ARCH_EXT_LIST="
1811     $ARCH_EXT_LIST_ARM
1812     $ARCH_EXT_LIST_PPC
1813     $ARCH_EXT_LIST_X86
1814     $ARCH_EXT_LIST_MIPS
1815     $ARCH_EXT_LIST_LOONGSON
1816 "
1817
1818 ARCH_FEATURES="
1819     aligned_stack
1820     fast_64bit
1821     fast_clz
1822     fast_cmov
1823     local_aligned_8
1824     local_aligned_16
1825     local_aligned_32
1826     simd_align_16
1827     simd_align_32
1828 "
1829
1830 BUILTIN_LIST="
1831     atomic_cas_ptr
1832     machine_rw_barrier
1833     MemoryBarrier
1834     mm_empty
1835     rdtsc
1836     sarestart
1837     sem_timedwait
1838     sync_val_compare_and_swap
1839 "
1840 HAVE_LIST_CMDLINE="
1841     inline_asm
1842     symver
1843     yasm
1844 "
1845
1846 HAVE_LIST_PUB="
1847     bigendian
1848     fast_unaligned
1849 "
1850
1851 HEADERS_LIST="
1852     alsa_asoundlib_h
1853     altivec_h
1854     arpa_inet_h
1855     asm_types_h
1856     cdio_paranoia_h
1857     cdio_paranoia_paranoia_h
1858     cuda_h
1859     dispatch_dispatch_h
1860     dev_bktr_ioctl_bt848_h
1861     dev_bktr_ioctl_meteor_h
1862     dev_ic_bt8xx_h
1863     dev_video_bktr_ioctl_bt848_h
1864     dev_video_meteor_ioctl_meteor_h
1865     direct_h
1866     dirent_h
1867     dlfcn_h
1868     d3d11_h
1869     dxva_h
1870     ES2_gl_h
1871     gsm_h
1872     io_h
1873     mach_mach_time_h
1874     machine_ioctl_bt848_h
1875     machine_ioctl_meteor_h
1876     malloc_h
1877     opencv2_core_core_c_h
1878     openjpeg_2_1_openjpeg_h
1879     openjpeg_2_0_openjpeg_h
1880     openjpeg_1_5_openjpeg_h
1881     OpenGL_gl3_h
1882     poll_h
1883     sndio_h
1884     soundcard_h
1885     stdatomic_h
1886     sys_mman_h
1887     sys_param_h
1888     sys_resource_h
1889     sys_select_h
1890     sys_soundcard_h
1891     sys_time_h
1892     sys_un_h
1893     sys_videoio_h
1894     termios_h
1895     udplite_h
1896     unistd_h
1897     valgrind_valgrind_h
1898     windows_h
1899     winsock2_h
1900 "
1901
1902 INTRINSICS_LIST="
1903     intrinsics_neon
1904 "
1905
1906 COMPLEX_FUNCS="
1907     cabs
1908     cexp
1909 "
1910
1911 MATH_FUNCS="
1912     atanf
1913     atan2f
1914     cbrt
1915     cbrtf
1916     copysign
1917     cosf
1918     erf
1919     exp2
1920     exp2f
1921     expf
1922     hypot
1923     isfinite
1924     isinf
1925     isnan
1926     ldexpf
1927     llrint
1928     llrintf
1929     log2
1930     log2f
1931     log10f
1932     lrint
1933     lrintf
1934     powf
1935     rint
1936     round
1937     roundf
1938     sinf
1939     trunc
1940     truncf
1941 "
1942
1943 SYSTEM_FUNCS="
1944     access
1945     aligned_malloc
1946     arc4random
1947     clock_gettime
1948     closesocket
1949     CommandLineToArgvW
1950     CoTaskMemFree
1951     CryptGenRandom
1952     dlopen
1953     fcntl
1954     flt_lim
1955     fork
1956     getaddrinfo
1957     gethrtime
1958     getopt
1959     GetProcessAffinityMask
1960     GetProcessMemoryInfo
1961     GetProcessTimes
1962     getrusage
1963     GetSystemTimeAsFileTime
1964     gettimeofday
1965     glob
1966     glXGetProcAddress
1967     gmtime_r
1968     inet_aton
1969     isatty
1970     jack_port_get_latency_range
1971     kbhit
1972     LoadLibrary
1973     localtime_r
1974     lstat
1975     lzo1x_999_compress
1976     mach_absolute_time
1977     MapViewOfFile
1978     memalign
1979     mkstemp
1980     mmap
1981     mprotect
1982     nanosleep
1983     PeekNamedPipe
1984     posix_memalign
1985     pthread_cancel
1986     sched_getaffinity
1987     SetConsoleTextAttribute
1988     SetConsoleCtrlHandler
1989     setmode
1990     setrlimit
1991     Sleep
1992     strerror_r
1993     sysconf
1994     sysctl
1995     usleep
1996     UTGetOSTypeFromString
1997     VirtualAlloc
1998     wglGetProcAddress
1999 "
2000
2001 TOOLCHAIN_FEATURES="
2002     as_dn_directive
2003     as_fpu_directive
2004     as_func
2005     as_object_arch
2006     asm_mod_q
2007     attribute_may_alias
2008     attribute_packed
2009     ebp_available
2010     ebx_available
2011     gnu_as
2012     gnu_windres
2013     ibm_asm
2014     inline_asm_direct_symbol_refs
2015     inline_asm_labels
2016     inline_asm_nonlocal_labels
2017     pragma_deprecated
2018     rsync_contimeout
2019     symver_asm_label
2020     symver_gnu_asm
2021     vfp_args
2022     xform_asm
2023     xmm_clobbers
2024 "
2025
2026 TYPES_LIST="
2027     CONDITION_VARIABLE_Ptr
2028     socklen_t
2029     struct_addrinfo
2030     struct_group_source_req
2031     struct_ip_mreq_source
2032     struct_ipv6_mreq
2033     struct_msghdr_msg_flags
2034     struct_pollfd
2035     struct_rusage_ru_maxrss
2036     struct_sctp_event_subscribe
2037     struct_sockaddr_in6
2038     struct_sockaddr_sa_len
2039     struct_sockaddr_storage
2040     struct_stat_st_mtim_tv_nsec
2041     struct_v4l2_frmivalenum_discrete
2042 "
2043
2044 HAVE_LIST="
2045     $ARCH_EXT_LIST
2046     $(add_suffix _external $ARCH_EXT_LIST)
2047     $(add_suffix _inline   $ARCH_EXT_LIST)
2048     $ARCH_FEATURES
2049     $ATOMICS_LIST
2050     $BUILTIN_LIST
2051     $COMPLEX_FUNCS
2052     $HAVE_LIST_CMDLINE
2053     $HAVE_LIST_PUB
2054     $HEADERS_LIST
2055     $INTRINSICS_LIST
2056     $MATH_FUNCS
2057     $SYSTEM_FUNCS
2058     $THREADS_LIST
2059     $TOOLCHAIN_FEATURES
2060     $TYPES_LIST
2061     atomics_native
2062     dos_paths
2063     dxva2_lib
2064     dxva2api_cobj
2065     libc_msvcrt
2066     makeinfo
2067     makeinfo_html
2068     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2069     perl
2070     pod2man
2071     sdl2
2072     section_data_rel_ro
2073     texi2html
2074     threads
2075     vaapi_drm
2076     vaapi_x11
2077     vdpau_x11
2078     winrt
2079 "
2080
2081 # options emitted with CONFIG_ prefix but not available on the command line
2082 CONFIG_EXTRA="
2083     aandcttables
2084     ac3dsp
2085     audio_frame_queue
2086     audiodsp
2087     blockdsp
2088     bswapdsp
2089     cabac
2090     dirac_parse
2091     dvprofile
2092     exif
2093     faandct
2094     faanidct
2095     fdctdsp
2096     flacdsp
2097     fmtconvert
2098     frame_thread_encoder
2099     g722dsp
2100     golomb
2101     gplv3
2102     h263dsp
2103     h264chroma
2104     h264dsp
2105     h264parse
2106     h264pred
2107     h264qpel
2108     hevcparse
2109     hpeldsp
2110     huffman
2111     huffyuvdsp
2112     huffyuvencdsp
2113     idctdsp
2114     iirfilter
2115     mdct15
2116     intrax8
2117     iso_media
2118     ividsp
2119     jpegtables
2120     lgplv3
2121     libx262
2122     llauddsp
2123     llviddsp
2124     llvidencdsp
2125     lpc
2126     lzf
2127     me_cmp
2128     mpeg_er
2129     mpegaudio
2130     mpegaudiodsp
2131     mpegaudioheader
2132     mpegvideo
2133     mpegvideoenc
2134     mss34dsp
2135     pixblockdsp
2136     qpeldsp
2137     qsv
2138     qsvdec
2139     qsvenc
2140     rangecoder
2141     riffdec
2142     riffenc
2143     rtpdec
2144     rtpenc_chain
2145     rv34dsp
2146     sinewin
2147     snappy
2148     srtp
2149     startcode
2150     texturedsp
2151     texturedspenc
2152     tpeldsp
2153     vaapi_encode
2154     vc1dsp
2155     videodsp
2156     vp3dsp
2157     vp56dsp
2158     vp8dsp
2159     vt_bt2020
2160     wma_freqs
2161     wmv2dsp
2162 "
2163
2164 CMDLINE_SELECT="
2165     $ARCH_EXT_LIST
2166     $CONFIG_LIST
2167     $HAVE_LIST_CMDLINE
2168     $THREADS_LIST
2169     asm
2170     cross_compile
2171     debug
2172     extra_warnings
2173     logging
2174     lto
2175     optimizations
2176     rpath
2177     stripping
2178 "
2179
2180 PATHS_LIST="
2181     bindir
2182     datadir
2183     docdir
2184     incdir
2185     libdir
2186     mandir
2187     pkgconfigdir
2188     prefix
2189     shlibdir
2190     install_name_dir
2191 "
2192
2193 CMDLINE_SET="
2194     $PATHS_LIST
2195     ar
2196     arch
2197     as
2198     assert_level
2199     build_suffix
2200     cc
2201     objcc
2202     cpu
2203     cross_prefix
2204     custom_allocator
2205     cxx
2206     dep_cc
2207     doxygen
2208     env
2209     extra_version
2210     gas
2211     host_cc
2212     host_cflags
2213     host_ld
2214     host_ldflags
2215     host_libs
2216     host_os
2217     install
2218     ld
2219     ln_s
2220     logfile
2221     malloc_prefix
2222     nm
2223     optflags
2224     pkg_config
2225     pkg_config_flags
2226     progs_suffix
2227     random_seed
2228     ranlib
2229     samples
2230     strip
2231     sws_max_filter_size
2232     sysinclude
2233     sysroot
2234     target_exec
2235     target_os
2236     target_path
2237     target_samples
2238     tempprefix
2239     toolchain
2240     valgrind
2241     yasmexe
2242 "
2243
2244 CMDLINE_APPEND="
2245     extra_cflags
2246     extra_cxxflags
2247     extra_objcflags
2248     host_cppflags
2249 "
2250
2251 # code dependency declarations
2252
2253 # architecture extensions
2254
2255 armv5te_deps="arm"
2256 armv6_deps="arm"
2257 armv6t2_deps="arm"
2258 armv8_deps="aarch64"
2259 neon_deps_any="aarch64 arm"
2260 intrinsics_neon_deps="neon"
2261 vfp_deps_any="aarch64 arm"
2262 vfpv3_deps="vfp"
2263 setend_deps="arm"
2264
2265 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2266
2267 loongson2_deps="mips"
2268 loongson3_deps="mips"
2269 mipsfpu_deps="mips"
2270 mipsdsp_deps="mips"
2271 mipsdspr2_deps="mips"
2272 mips32r2_deps="mips"
2273 mips32r5_deps="mips"
2274 mips32r6_deps="mips"
2275 mips64r2_deps="mips"
2276 mips64r6_deps="mips"
2277 msa_deps="mipsfpu"
2278 mmi_deps="mips"
2279
2280 altivec_deps="ppc"
2281 dcbzl_deps="ppc"
2282 ldbrx_deps="ppc"
2283 ppc4xx_deps="ppc"
2284 vsx_deps="altivec"
2285 power8_deps="vsx"
2286
2287 cpunop_deps="i686"
2288 x86_64_select="i686"
2289 x86_64_suggest="fast_cmov"
2290
2291 amd3dnow_deps="mmx"
2292 amd3dnowext_deps="amd3dnow"
2293 i686_deps="x86"
2294 mmx_deps="x86"
2295 mmxext_deps="mmx"
2296 sse_deps="mmxext"
2297 sse2_deps="sse"
2298 sse3_deps="sse2"
2299 ssse3_deps="sse3"
2300 sse4_deps="ssse3"
2301 sse42_deps="sse4"
2302 aesni_deps="sse42"
2303 avx_deps="sse42"
2304 xop_deps="avx"
2305 fma3_deps="avx"
2306 fma4_deps="avx"
2307 avx2_deps="avx"
2308
2309 mmx_external_deps="yasm"
2310 mmx_inline_deps="inline_asm"
2311 mmx_suggest="mmx_external mmx_inline"
2312
2313 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2314     eval dep=\$${ext}_deps
2315     eval ${ext}_external_deps='"${dep}_external"'
2316     eval ${ext}_inline_deps='"${dep}_inline"'
2317     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2318 done
2319
2320 aligned_stack_if_any="aarch64 ppc x86"
2321 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2322 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2323 fast_unaligned_if_any="aarch64 ppc x86"
2324 simd_align_16_if_any="altivec neon sse"
2325 simd_align_32_if_any="avx"
2326
2327 # system capabilities
2328 symver_if_any="symver_asm_label symver_gnu_asm"
2329 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
2330
2331 # threading support
2332 atomics_gcc_if="sync_val_compare_and_swap"
2333 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2334 atomics_win32_if="MemoryBarrier"
2335 atomics_native_if_any="$ATOMICS_LIST"
2336 w32threads_deps="atomics_native"
2337 threads_if_any="$THREADS_LIST"
2338
2339 # subsystems
2340 dct_select="rdft"
2341 dirac_parse_select="golomb"
2342 error_resilience_select="me_cmp"
2343 faandct_deps="faan fdctdsp"
2344 faanidct_deps="faan idctdsp"
2345 h264dsp_select="startcode"
2346 frame_thread_encoder_deps="encoders threads"
2347 intrax8_select="blockdsp idctdsp"
2348 mdct_select="fft"
2349 mdct15_select="fft"
2350 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2351 mpeg_er_select="error_resilience"
2352 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2353 mpegaudiodsp_select="dct"
2354 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2355 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2356 vc1dsp_select="h264chroma qpeldsp startcode"
2357 rdft_select="fft"
2358
2359 # decoders / encoders
2360 aac_decoder_select="mdct15 mdct sinewin"
2361 aac_fixed_decoder_select="mdct sinewin"
2362 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2363 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2364 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2365 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2366 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2367 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2368 adpcm_g722_decoder_select="g722dsp"
2369 adpcm_g722_encoder_select="g722dsp"
2370 aic_decoder_select="golomb idctdsp"
2371 alac_encoder_select="lpc"
2372 als_decoder_select="bswapdsp"
2373 amrnb_decoder_select="lsp"
2374 amrwb_decoder_select="lsp"
2375 amv_decoder_select="sp5x_decoder exif"
2376 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2377 ape_decoder_select="bswapdsp llauddsp"
2378 apng_decoder_select="zlib"
2379 apng_encoder_select="llvidencdsp zlib"
2380 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2381 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2382 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2383 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2384 atrac1_decoder_select="mdct sinewin"
2385 atrac3_decoder_select="mdct"
2386 atrac3p_decoder_select="mdct sinewin"
2387 avrn_decoder_select="exif jpegtables"
2388 bink_decoder_select="blockdsp hpeldsp"
2389 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2390 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2391 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2392 cllc_decoder_select="bswapdsp"
2393 comfortnoise_encoder_select="lpc"
2394 cook_decoder_select="audiodsp mdct sinewin"
2395 cscd_decoder_select="lzo"
2396 cscd_decoder_suggest="zlib"
2397 dca_decoder_select="mdct"
2398 dds_decoder_select="texturedsp"
2399 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2400 dnxhd_decoder_select="blockdsp idctdsp"
2401 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2402 dvvideo_decoder_select="dvprofile idctdsp"
2403 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2404 dxa_decoder_select="zlib"
2405 dxv_decoder_select="lzf texturedsp"
2406 eac3_decoder_select="ac3_decoder"
2407 eac3_encoder_select="ac3_encoder"
2408 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2409 eatgq_decoder_select="aandcttables"
2410 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2411 exr_decoder_select="zlib"
2412 ffv1_decoder_select="golomb rangecoder"
2413 ffv1_encoder_select="rangecoder"
2414 ffvhuff_decoder_select="huffyuv_decoder"
2415 ffvhuff_encoder_select="huffyuv_encoder"
2416 fic_decoder_select="golomb"
2417 flac_decoder_select="flacdsp golomb"
2418 flac_encoder_select="bswapdsp flacdsp golomb lpc"
2419 flashsv2_decoder_select="zlib"
2420 flashsv2_encoder_select="zlib"
2421 flashsv_decoder_select="zlib"
2422 flashsv_encoder_select="zlib"
2423 flv_decoder_select="h263_decoder"
2424 flv_encoder_select="h263_encoder"
2425 fourxm_decoder_select="blockdsp bswapdsp"
2426 fraps_decoder_select="bswapdsp huffman"
2427 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2428 g729_decoder_select="audiodsp"
2429 h261_decoder_select="mpegvideo"
2430 h261_encoder_select="aandcttables mpegvideoenc"
2431 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2432 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2433 h263i_decoder_select="h263_decoder"
2434 h263p_decoder_select="h263_decoder"
2435 h263p_encoder_select="h263_encoder"
2436 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2437 h264_decoder_suggest="error_resilience"
2438 hap_decoder_select="snappy texturedsp"
2439 hap_encoder_deps="libsnappy"
2440 hap_encoder_select="texturedspenc"
2441 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2442 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2443 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2444 iac_decoder_select="imc_decoder"
2445 imc_decoder_select="bswapdsp fft mdct sinewin"
2446 indeo3_decoder_select="hpeldsp"
2447 indeo4_decoder_select="ividsp"
2448 indeo5_decoder_select="ividsp"
2449 interplay_video_decoder_select="hpeldsp"
2450 jpegls_decoder_select="golomb mjpeg_decoder"
2451 jpegls_encoder_select="golomb"
2452 jv_decoder_select="blockdsp"
2453 lagarith_decoder_select="llviddsp"
2454 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2455 loco_decoder_select="golomb"
2456 magicyuv_decoder_select="llviddsp"
2457 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2458 metasound_decoder_select="lsp mdct sinewin"
2459 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2460 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2461 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2462 mjpegb_decoder_select="mjpeg_decoder"
2463 mlp_decoder_select="mlp_parser"
2464 motionpixels_decoder_select="bswapdsp"
2465 mp1_decoder_select="mpegaudio"
2466 mp1float_decoder_select="mpegaudio"
2467 mp2_decoder_select="mpegaudio"
2468 mp2float_decoder_select="mpegaudio"
2469 mp3_decoder_select="mpegaudio"
2470 mp3adu_decoder_select="mpegaudio"
2471 mp3adufloat_decoder_select="mpegaudio"
2472 mp3float_decoder_select="mpegaudio"
2473 mp3on4_decoder_select="mpegaudio"
2474 mp3on4float_decoder_select="mpegaudio"
2475 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2476 mpc8_decoder_select="mpegaudiodsp"
2477 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2478 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2479 mpegvideo_decoder_select="mpegvideo"
2480 mpeg1video_decoder_select="mpegvideo"
2481 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2482 mpeg2video_decoder_select="mpegvideo"
2483 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2484 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2485 mpeg4_encoder_select="h263_encoder"
2486 msa1_decoder_select="mss34dsp"
2487 msmpeg4v1_decoder_select="h263_decoder"
2488 msmpeg4v2_decoder_select="h263_decoder"
2489 msmpeg4v2_encoder_select="h263_encoder"
2490 msmpeg4v3_decoder_select="h263_decoder"
2491 msmpeg4v3_encoder_select="h263_encoder"
2492 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2493 mts2_decoder_select="mss34dsp"
2494 mxpeg_decoder_select="mjpeg_decoder"
2495 nellymoser_decoder_select="mdct sinewin"
2496 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2497 nuv_decoder_select="idctdsp lzo"
2498 on2avc_decoder_select="mdct"
2499 opus_decoder_deps="swresample"
2500 opus_decoder_select="mdct15"
2501 opus_encoder_select="audio_frame_queue mdct15"
2502 png_decoder_select="zlib"
2503 png_encoder_select="llvidencdsp zlib"
2504 prores_decoder_select="blockdsp idctdsp"
2505 prores_encoder_select="fdctdsp"
2506 qcelp_decoder_select="lsp"
2507 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2508 ra_144_decoder_select="audiodsp"
2509 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2510 ralf_decoder_select="golomb"
2511 rawvideo_decoder_select="bswapdsp"
2512 rscc_decoder_select="zlib"
2513 rtjpeg_decoder_select="me_cmp"
2514 rv10_decoder_select="h263_decoder"
2515 rv10_encoder_select="h263_encoder"
2516 rv20_decoder_select="h263_decoder"
2517 rv20_encoder_select="h263_encoder"
2518 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2519 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2520 screenpresso_decoder_select="zlib"
2521 shorten_decoder_select="golomb bswapdsp"
2522 sipr_decoder_select="lsp"
2523 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2524 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2525 sonic_decoder_select="golomb rangecoder"
2526 sonic_encoder_select="golomb rangecoder"
2527 sonic_ls_encoder_select="golomb rangecoder"
2528 sp5x_decoder_select="mjpeg_decoder"
2529 svq1_decoder_select="hpeldsp"
2530 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2531 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2532 svq3_decoder_suggest="zlib"
2533 tak_decoder_select="audiodsp"
2534 tdsc_decoder_select="zlib mjpeg_decoder"
2535 theora_decoder_select="vp3_decoder"
2536 thp_decoder_select="mjpeg_decoder"
2537 tiff_decoder_suggest="zlib lzma"
2538 tiff_encoder_suggest="zlib"
2539 truehd_decoder_select="mlp_parser"
2540 truemotion2_decoder_select="bswapdsp"
2541 truespeech_decoder_select="bswapdsp"
2542 tscc_decoder_select="zlib"
2543 twinvq_decoder_select="mdct lsp sinewin"
2544 txd_decoder_select="texturedsp"
2545 utvideo_decoder_select="bswapdsp llviddsp"
2546 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2547 vble_decoder_select="llviddsp"
2548 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2549 vc1_qsv_decoder_deps="libmfx"
2550 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2551 vc1image_decoder_select="vc1_decoder"
2552 vorbis_decoder_select="mdct"
2553 vorbis_encoder_select="mdct"
2554 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2555 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2556 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2557 vp6a_decoder_select="vp6_decoder"
2558 vp6f_decoder_select="vp6_decoder"
2559 vp7_decoder_select="h264pred videodsp vp8dsp"
2560 vp8_decoder_select="h264pred videodsp vp8dsp"
2561 vp9_decoder_select="videodsp vp9_parser"
2562 webp_decoder_select="vp8_decoder exif"
2563 wmalossless_decoder_select="llauddsp"
2564 wmapro_decoder_select="mdct sinewin wma_freqs"
2565 wmav1_decoder_select="mdct sinewin wma_freqs"
2566 wmav1_encoder_select="mdct sinewin wma_freqs"
2567 wmav2_decoder_select="mdct sinewin wma_freqs"
2568 wmav2_encoder_select="mdct sinewin wma_freqs"
2569 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2570 wmv1_decoder_select="h263_decoder"
2571 wmv1_encoder_select="h263_encoder"
2572 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2573 wmv2_encoder_select="h263_encoder wmv2dsp"
2574 wmv3_decoder_select="vc1_decoder"
2575 wmv3image_decoder_select="wmv3_decoder"
2576 xma1_decoder_select="wmapro_decoder"
2577 xma2_decoder_select="wmapro_decoder"
2578 zerocodec_decoder_select="zlib"
2579 zlib_decoder_select="zlib"
2580 zlib_encoder_select="zlib"
2581 zmbv_decoder_select="zlib"
2582 zmbv_encoder_select="zlib"
2583
2584 # platform codecs
2585 audiotoolbox_deps="AudioToolbox_AudioToolbox_h"
2586 audiotoolbox_extralibs="-framework CoreFoundation -framework AudioToolbox -framework CoreMedia"
2587
2588 # hardware accelerators
2589 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2590 cuda_deps_any="dlopen LoadLibrary"
2591 cuvid_deps="cuda"
2592 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2593 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2594 dxva2_extralibs="-luser32"
2595 vaapi_deps="va_va_h"
2596 vda_framework_deps="VideoDecodeAcceleration_VDADecoder_h"
2597 vda_framework_extralibs="-framework VideoDecodeAcceleration"
2598 vda_deps="vda_framework pthreads"
2599 vda_extralibs="-framework CoreFoundation -framework QuartzCore"
2600 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2601 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2602 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2603 xvmc_deps="X11_extensions_XvMClib_h"
2604
2605 h263_vaapi_hwaccel_deps="vaapi"
2606 h263_vaapi_hwaccel_select="h263_decoder"
2607 h263_videotoolbox_hwaccel_deps="videotoolbox"
2608 h263_videotoolbox_hwaccel_select="h263_decoder"
2609 h264_cuvid_hwaccel_deps="cuda cuvid"
2610 h264_cuvid_hwaccel_select="h264_cuvid_decoder"
2611 h264_d3d11va_hwaccel_deps="d3d11va"
2612 h264_d3d11va_hwaccel_select="h264_decoder"
2613 h264_dxva2_hwaccel_deps="dxva2"
2614 h264_dxva2_hwaccel_select="h264_decoder"
2615 h264_mediacodec_hwaccel_deps="mediacodec"
2616 h264_mmal_hwaccel_deps="mmal"
2617 h264_qsv_hwaccel_deps="libmfx"
2618 h264_vaapi_hwaccel_deps="vaapi"
2619 h264_vaapi_hwaccel_select="h264_decoder"
2620 h264_vda_hwaccel_deps="vda"
2621 h264_vda_hwaccel_select="h264_decoder"
2622 h264_vda_old_hwaccel_deps="vda"
2623 h264_vda_old_hwaccel_select="h264_decoder"
2624 h264_vdpau_hwaccel_deps="vdpau"
2625 h264_vdpau_hwaccel_select="h264_decoder"
2626 h264_videotoolbox_hwaccel_deps="videotoolbox"
2627 h264_videotoolbox_hwaccel_select="h264_decoder"
2628 hevc_cuvid_hwaccel_deps="cuda cuvid"
2629 hevc_cuvid_hwaccel_select="hevc_cuvid_decoder"
2630 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2631 hevc_d3d11va_hwaccel_select="hevc_decoder"
2632 hevc_mediacodec_hwaccel_deps="mediacodec"
2633 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2634 hevc_dxva2_hwaccel_select="hevc_decoder"
2635 hevc_qsv_hwaccel_deps="libmfx"
2636 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2637 hevc_vaapi_hwaccel_select="hevc_decoder"
2638 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2639 hevc_vdpau_hwaccel_select="hevc_decoder"
2640 mjpeg_cuvid_hwaccel_deps="cuda cuvid"
2641 mjpeg_cuvid_hwaccel_select="mjpeg_cuvid_decoder"
2642 mpeg_xvmc_hwaccel_deps="xvmc"
2643 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2644 mpeg1_cuvid_hwaccel_deps="cuda cuvid"
2645 mpeg1_cuvid_hwaccel_select="mpeg1_cuvid_decoder"
2646 mpeg1_vdpau_hwaccel_deps="vdpau"
2647 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2648 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2649 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2650 mpeg1_xvmc_hwaccel_deps="xvmc"
2651 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2652 mpeg2_cuvid_hwaccel_deps="cuda cuvid"
2653 mpeg2_cuvid_hwaccel_select="mpeg2_cuvid_decoder"
2654 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2655 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2656 mpeg2_dxva2_hwaccel_deps="dxva2"
2657 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2658 mpeg2_mmal_hwaccel_deps="mmal"
2659 mpeg2_qsv_hwaccel_deps="libmfx"
2660 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2661 mpeg2_vaapi_hwaccel_deps="vaapi"
2662 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2663 mpeg2_vdpau_hwaccel_deps="vdpau"
2664 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2665 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2666 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2667 mpeg2_xvmc_hwaccel_deps="xvmc"
2668 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2669 mpeg4_cuvid_hwaccel_deps="cuda cuvid"
2670 mpeg4_cuvid_hwaccel_select="mpeg4_cuvid_decoder"
2671 mpeg4_mediacodec_hwaccel_deps="mediacodec"
2672 mpeg4_mmal_hwaccel_deps="mmal"
2673 mpeg4_vaapi_hwaccel_deps="vaapi"
2674 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2675 mpeg4_vdpau_hwaccel_deps="vdpau"
2676 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2677 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2678 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2679 vc1_cuvid_hwaccel_deps="cuda cuvid"
2680 vc1_cuvid_hwaccel_select="vc1_cuvid_decoder"
2681 vc1_d3d11va_hwaccel_deps="d3d11va"
2682 vc1_d3d11va_hwaccel_select="vc1_decoder"
2683 vc1_dxva2_hwaccel_deps="dxva2"
2684 vc1_dxva2_hwaccel_select="vc1_decoder"
2685 vc1_mmal_hwaccel_deps="mmal"
2686 vc1_qsv_hwaccel_deps="libmfx"
2687 vc1_qsv_hwaccel_select="qsvdec_vc1"
2688 vc1_vaapi_hwaccel_deps="vaapi"
2689 vc1_vaapi_hwaccel_select="vc1_decoder"
2690 vc1_vdpau_hwaccel_deps="vdpau"
2691 vc1_vdpau_hwaccel_select="vc1_decoder"
2692 vp8_cuvid_hwaccel_deps="cuda cuvid"
2693 vp8_cuvid_hwaccel_select="vp8_cuvid_decoder"
2694 vp9_cuvid_hwaccel_deps="cuda cuvid"
2695 vp9_cuvid_hwaccel_select="vp9_cuvid_decoder"
2696 vp8_mediacodec_hwaccel_deps="mediacodec"
2697 vp8_qsv_hwaccel_deps="libmfx"
2698 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2699 vp9_d3d11va_hwaccel_select="vp9_decoder"
2700 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2701 vp9_dxva2_hwaccel_select="vp9_decoder"
2702 vp9_mediacodec_hwaccel_deps="mediacodec"
2703 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2704 vp9_vaapi_hwaccel_select="vp9_decoder"
2705 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2706 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2707 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2708 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2709
2710 # hardware-accelerated codecs
2711 omx_deps="dlopen pthreads"
2712 omx_extralibs='$ldl'
2713 qsvdec_select="qsv"
2714 qsvenc_select="qsv"
2715 vaapi_encode_deps="vaapi"
2716
2717 hwupload_cuda_filter_deps="cuda"
2718 scale_npp_filter_deps="cuda libnpp"
2719
2720 nvenc_deps="cuda"
2721 nvenc_deps_any="dlopen LoadLibrary"
2722 nvenc_encoder_deps="nvenc"
2723
2724 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2725 h264_cuvid_decoder_deps="cuda cuvid"
2726 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2727 h264_mediacodec_decoder_deps="mediacodec"
2728 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2729 h264_mmal_decoder_deps="mmal"
2730 h264_nvenc_encoder_deps="nvenc"
2731 h264_omx_encoder_deps="omx"
2732 h264_qsv_decoder_deps="libmfx"
2733 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2734 h264_qsv_encoder_deps="libmfx"
2735 h264_qsv_encoder_select="qsvenc"
2736 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2737 h264_vaapi_encoder_select="vaapi_encode golomb"
2738 h264_vda_decoder_deps="vda"
2739 h264_vda_decoder_select="h264_decoder"
2740 h264_vdpau_decoder_deps="vdpau"
2741 h264_vdpau_decoder_select="h264_decoder"
2742 hevc_cuvid_decoder_deps="cuda cuvid"
2743 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2744 hevc_mediacodec_decoder_deps="mediacodec"
2745 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2746 hevc_nvenc_encoder_deps="nvenc"
2747 hevc_qsv_decoder_deps="libmfx"
2748 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2749 hevc_qsv_encoder_deps="libmfx"
2750 hevc_qsv_encoder_select="hevcparse qsvenc"
2751 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2752 hevc_vaapi_encoder_select="vaapi_encode golomb"
2753 mjpeg_cuvid_decoder_deps="cuda cuvid"
2754 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2755 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2756 mpeg1_cuvid_decoder_deps="cuda cuvid"
2757 mpeg1_vdpau_decoder_deps="vdpau"
2758 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2759 mpeg2_crystalhd_decoder_select="crystalhd"
2760 mpeg2_cuvid_decoder_deps="cuda cuvid"
2761 mpeg2_mmal_decoder_deps="mmal"
2762 mpeg2_qsv_decoder_deps="libmfx"
2763 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2764 mpeg2_qsv_encoder_deps="libmfx"
2765 mpeg2_qsv_encoder_select="qsvenc"
2766 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2767 mpeg2_vaapi_encoder_select="vaapi_encode"
2768 mpeg4_crystalhd_decoder_select="crystalhd"
2769 mpeg4_cuvid_decoder_deps="cuda cuvid"
2770 mpeg4_mediacodec_decoder_deps="mediacodec"
2771 mpeg4_mmal_decoder_deps="mmal"
2772 mpeg4_omx_encoder_deps="omx"
2773 mpeg4_vdpau_decoder_deps="vdpau"
2774 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2775 mpeg_vdpau_decoder_deps="vdpau"
2776 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2777 msmpeg4_crystalhd_decoder_select="crystalhd"
2778 nvenc_h264_encoder_deps="nvenc"
2779 nvenc_hevc_encoder_deps="nvenc"
2780 vc1_crystalhd_decoder_select="crystalhd"
2781 vc1_cuvid_decoder_deps="cuda cuvid"
2782 vc1_mmal_decoder_deps="mmal"
2783 vc1_vdpau_decoder_deps="vdpau"
2784 vc1_vdpau_decoder_select="vc1_decoder"
2785 vp8_cuvid_decoder_deps="cuda cuvid"
2786 vp8_mediacodec_decoder_deps="mediacodec"
2787 vp8_qsv_decoder_deps="libmfx"
2788 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2789 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2790 vp8_vaapi_encoder_select="vaapi_encode"
2791 vp9_cuvid_decoder_deps="cuda cuvid"
2792 vp9_mediacodec_decoder_deps="mediacodec"
2793 wmv3_crystalhd_decoder_select="crystalhd"
2794 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2795
2796 # parsers
2797 h264_parser_select="golomb h264dsp h264parse"
2798 hevc_parser_select="golomb hevcparse"
2799 mpegaudio_parser_select="mpegaudioheader"
2800 mpegvideo_parser_select="mpegvideo"
2801 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2802 vc1_parser_select="vc1dsp"
2803
2804 # bitstream_filters
2805 mjpeg2jpeg_bsf_select="jpegtables"
2806
2807 # external libraries
2808 aac_at_decoder_deps="audiotoolbox"
2809 ac3_at_decoder_deps="audiotoolbox"
2810 ac3_at_decoder_select="ac3_parser"
2811 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2812 alac_at_decoder_deps="audiotoolbox"
2813 amr_nb_at_decoder_deps="audiotoolbox"
2814 avisynth_deps_any="dlopen LoadLibrary"
2815 avisynth_demuxer_deps="avisynth"
2816 avisynth_demuxer_select="riffdec"
2817 eac3_at_decoder_deps="audiotoolbox"
2818 eac3_at_decoder_select="ac3_parser"
2819 gsm_ms_at_decoder_deps="audiotoolbox"
2820 ilbc_at_decoder_deps="audiotoolbox"
2821 mp1_at_decoder_deps="audiotoolbox"
2822 mp2_at_decoder_deps="audiotoolbox"
2823 mp3_at_decoder_deps="audiotoolbox"
2824 mp1_at_decoder_select="mpegaudioheader"
2825 mp2_at_decoder_select="mpegaudioheader"
2826 mp3_at_decoder_select="mpegaudioheader"
2827 pcm_alaw_at_decoder_deps="audiotoolbox"
2828 pcm_mulaw_at_decoder_deps="audiotoolbox"
2829 qdmc_at_decoder_deps="audiotoolbox"
2830 qdm2_at_decoder_deps="audiotoolbox"
2831 aac_at_encoder_deps="audiotoolbox"
2832 aac_at_encoder_select="audio_frame_queue"
2833 alac_at_encoder_deps="audiotoolbox"
2834 alac_at_encoder_select="audio_frame_queue"
2835 ilbc_at_encoder_deps="audiotoolbox"
2836 ilbc_at_encoder_select="audio_frame_queue"
2837 pcm_alaw_at_encoder_deps="audiotoolbox"
2838 pcm_alaw_at_encoder_select="audio_frame_queue"
2839 pcm_mulaw_at_encoder_deps="audiotoolbox"
2840 pcm_mulaw_at_encoder_select="audio_frame_queue"
2841 chromaprint_muxer_deps="chromaprint"
2842 h264_videotoolbox_encoder_deps="videotoolbox_encoder pthreads"
2843 libcelt_decoder_deps="libcelt"
2844 libfdk_aac_decoder_deps="libfdk_aac"
2845 libfdk_aac_encoder_deps="libfdk_aac"
2846 libfdk_aac_encoder_select="audio_frame_queue"
2847 libgme_demuxer_deps="libgme"
2848 libgsm_decoder_deps="libgsm"
2849 libgsm_encoder_deps="libgsm"
2850 libgsm_ms_decoder_deps="libgsm"
2851 libgsm_ms_encoder_deps="libgsm"
2852 libilbc_decoder_deps="libilbc"
2853 libilbc_encoder_deps="libilbc"
2854 libkvazaar_encoder_deps="libkvazaar"
2855 libmodplug_demuxer_deps="libmodplug"
2856 libmp3lame_encoder_deps="libmp3lame"
2857 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2858 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2859 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2860 libopencore_amrnb_encoder_select="audio_frame_queue"
2861 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2862 libopenh264_decoder_deps="libopenh264"
2863 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2864 libopenh264_encoder_deps="libopenh264"
2865 libopenjpeg_decoder_deps="libopenjpeg"
2866 libopenjpeg_encoder_deps="libopenjpeg"
2867 libopenmpt_demuxer_deps="libopenmpt"
2868 libopus_decoder_deps="libopus"
2869 libopus_encoder_deps="libopus"
2870 libopus_encoder_select="audio_frame_queue"
2871 libschroedinger_decoder_deps="libschroedinger"
2872 libschroedinger_encoder_deps="libschroedinger"
2873 libshine_encoder_deps="libshine"
2874 libshine_encoder_select="audio_frame_queue"
2875 libspeex_decoder_deps="libspeex"
2876 libspeex_encoder_deps="libspeex"
2877 libspeex_encoder_select="audio_frame_queue"
2878 libtheora_encoder_deps="libtheora"
2879 libtwolame_encoder_deps="libtwolame"
2880 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2881 libvorbis_decoder_deps="libvorbis"
2882 libvorbis_encoder_deps="libvorbis"
2883 libvorbis_encoder_select="audio_frame_queue"
2884 libvpx_vp8_decoder_deps="libvpx"
2885 libvpx_vp8_encoder_deps="libvpx"
2886 libvpx_vp9_decoder_deps="libvpx"
2887 libvpx_vp9_encoder_deps="libvpx"
2888 libwavpack_encoder_deps="libwavpack"
2889 libwavpack_encoder_select="audio_frame_queue"
2890 libwebp_encoder_deps="libwebp"
2891 libwebp_anim_encoder_deps="libwebp"
2892 libx262_encoder_deps="libx262"
2893 libx264_encoder_deps="libx264"
2894 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2895 libx264rgb_encoder_select="libx264_encoder"
2896 libx265_encoder_deps="libx265"
2897 libxavs_encoder_deps="libxavs"
2898 libxvid_encoder_deps="libxvid"
2899 libzvbi_teletext_decoder_deps="libzvbi"
2900 videotoolbox_deps="VideoToolbox_VideoToolbox_h"
2901 videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework CoreVideo"
2902 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2903 videotoolbox_encoder_suggest="vda_framework vt_bt2020"
2904 vt_bt2020_deps="kCVImageBufferColorPrimaries_ITU_R_2020"
2905
2906 # demuxers / muxers
2907 ac3_demuxer_select="ac3_parser"
2908 aiff_muxer_select="iso_media"
2909 asf_demuxer_select="riffdec"
2910 asf_o_demuxer_select="riffdec"
2911 asf_muxer_select="riffenc"
2912 asf_stream_muxer_select="asf_muxer"
2913 avi_demuxer_select="iso_media riffdec exif"
2914 avi_muxer_select="riffenc"
2915 caf_demuxer_select="iso_media riffdec"
2916 caf_muxer_select="iso_media"
2917 dash_muxer_select="mp4_muxer"
2918 dirac_demuxer_select="dirac_parser"
2919 dts_demuxer_select="dca_parser"
2920 dtshd_demuxer_select="dca_parser"
2921 dv_demuxer_select="dvprofile"
2922 dv_muxer_select="dvprofile"
2923 dxa_demuxer_select="riffdec"
2924 eac3_demuxer_select="ac3_parser"
2925 f4v_muxer_select="mov_muxer"
2926 fifo_muxer_deps="threads"
2927 flac_demuxer_select="flac_parser"
2928 hds_muxer_select="flv_muxer"
2929 hls_muxer_select="mpegts_muxer"
2930 image2_alias_pix_demuxer_select="image2_demuxer"
2931 image2_brender_pix_demuxer_select="image2_demuxer"
2932 ipod_muxer_select="mov_muxer"
2933 ismv_muxer_select="mov_muxer"
2934 libnut_demuxer_deps="libnut"
2935 libnut_muxer_deps="libnut"
2936 matroska_audio_muxer_select="matroska_muxer"
2937 matroska_demuxer_select="iso_media riffdec"
2938 matroska_demuxer_suggest="bzlib lzo zlib"
2939 matroska_muxer_select="iso_media riffenc"
2940 mmf_muxer_select="riffenc"
2941 mov_demuxer_select="iso_media riffdec"
2942 mov_demuxer_suggest="zlib"
2943 mov_muxer_select="iso_media riffenc rtpenc_chain"
2944 mp3_demuxer_select="mpegaudio_parser"
2945 mp3_muxer_select="mpegaudioheader"
2946 mp4_muxer_select="mov_muxer"
2947 mpegts_demuxer_select="iso_media"
2948 mpegts_muxer_select="adts_muxer latm_muxer"
2949 mpegtsraw_demuxer_select="mpegts_demuxer"
2950 mxf_d10_muxer_select="mxf_muxer"
2951 mxf_opatom_muxer_select="mxf_muxer"
2952 nut_muxer_select="riffenc"
2953 nuv_demuxer_select="riffdec"
2954 oga_muxer_select="ogg_muxer"
2955 ogg_demuxer_select="dirac_parse"
2956 ogv_muxer_select="ogg_muxer"
2957 opus_muxer_select="ogg_muxer"
2958 psp_muxer_select="mov_muxer"
2959 rtp_demuxer_select="sdp_demuxer"
2960 rtp_muxer_select="golomb"
2961 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2962 rtsp_demuxer_select="http_protocol rtpdec"
2963 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2964 sap_demuxer_select="sdp_demuxer"
2965 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2966 sdp_demuxer_select="rtpdec"
2967 smoothstreaming_muxer_select="ismv_muxer"
2968 spdif_muxer_select="aac_parser"
2969 spx_muxer_select="ogg_muxer"
2970 swf_demuxer_suggest="zlib"
2971 tak_demuxer_select="tak_parser"
2972 tg2_muxer_select="mov_muxer"
2973 tgp_muxer_select="mov_muxer"
2974 vobsub_demuxer_select="mpegps_demuxer"
2975 w64_demuxer_select="wav_demuxer"
2976 w64_muxer_select="wav_muxer"
2977 wav_demuxer_select="riffdec"
2978 wav_muxer_select="riffenc"
2979 webm_muxer_select="iso_media riffenc"
2980 webm_dash_manifest_demuxer_select="matroska_demuxer"
2981 wtv_demuxer_select="mpegts_demuxer riffdec"
2982 wtv_muxer_select="mpegts_muxer riffenc"
2983 xmv_demuxer_select="riffdec"
2984 xwma_demuxer_select="riffdec"
2985
2986 # indevs / outdevs
2987 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2988 alsa_outdev_deps="alsa_asoundlib_h"
2989 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2990 avfoundation_indev_select="avfoundation"
2991 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2992 caca_outdev_deps="libcaca"
2993 decklink_indev_deps="decklink pthreads"
2994 decklink_indev_extralibs="-lstdc++"
2995 decklink_outdev_deps="decklink pthreads"
2996 decklink_outdev_extralibs="-lstdc++"
2997 dshow_indev_deps="IBaseFilter"
2998 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
2999 dv1394_indev_deps="dv1394"
3000 dv1394_indev_select="dv_demuxer"
3001 fbdev_indev_deps="linux_fb_h"
3002 fbdev_outdev_deps="linux_fb_h"
3003 gdigrab_indev_deps="CreateDIBSection"
3004 gdigrab_indev_extralibs="-lgdi32"
3005 gdigrab_indev_select="bmp_decoder"
3006 iec61883_indev_deps="libiec61883"
3007 jack_indev_deps="jack_jack_h"
3008 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3009 lavfi_indev_deps="avfilter"
3010 libcdio_indev_deps="libcdio"
3011 libdc1394_indev_deps="libdc1394"
3012 libv4l2_indev_deps="libv4l2"
3013 openal_indev_deps="openal"
3014 opengl_outdev_deps="opengl"
3015 oss_indev_deps_any="soundcard_h sys_soundcard_h"
3016 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
3017 pulse_indev_deps="libpulse"
3018 pulse_outdev_deps="libpulse"
3019 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
3020 qtkit_indev_select="qtkit"
3021 sdl2_outdev_deps="sdl2"
3022 sndio_indev_deps="sndio_h"
3023 sndio_outdev_deps="sndio_h"
3024 v4l_indev_deps="linux_videodev_h"
3025 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3026 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3027 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
3028 vfwcap_indev_extralibs="-lavicap32"
3029 xcbgrab_indev_deps="libxcb"
3030 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3031 xv_outdev_extralibs="-lXv -lX11 -lXext"
3032
3033 # protocols
3034 async_protocol_deps="threads"
3035 bluray_protocol_deps="libbluray"
3036 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
3037 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3038 ffrtmpcrypt_protocol_select="tcp_protocol"
3039 ffrtmphttp_protocol_deps="!librtmp_protocol"
3040 ffrtmphttp_protocol_select="http_protocol"
3041 ftp_protocol_select="tcp_protocol"
3042 gopher_protocol_select="network"
3043 http_protocol_select="tcp_protocol"
3044 httpproxy_protocol_select="tcp_protocol"
3045 https_protocol_select="tls_protocol"
3046 icecast_protocol_select="http_protocol"
3047 librtmp_protocol_deps="librtmp"
3048 librtmpe_protocol_deps="librtmp"
3049 librtmps_protocol_deps="librtmp"
3050 librtmpt_protocol_deps="librtmp"
3051 librtmpte_protocol_deps="librtmp"
3052 libsmbclient_protocol_deps="libsmbclient gplv3"
3053 libssh_protocol_deps="libssh"
3054 mmsh_protocol_select="http_protocol"
3055 mmst_protocol_select="network"
3056 rtmp_protocol_deps="!librtmp_protocol"
3057 rtmp_protocol_select="tcp_protocol"
3058 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3059 rtmps_protocol_deps="!librtmp_protocol"
3060 rtmps_protocol_select="tls_protocol"
3061 rtmpt_protocol_select="ffrtmphttp_protocol"
3062 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3063 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3064 rtp_protocol_select="udp_protocol"
3065 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3066 sctp_protocol_select="network"
3067 srtp_protocol_select="rtp_protocol srtp"
3068 tcp_protocol_select="network"
3069 tls_gnutls_protocol_deps="gnutls !tls_schannel_protocol !tls_securetransport_protocol"
3070 tls_gnutls_protocol_select="tcp_protocol"
3071 tls_openssl_protocol_deps="openssl !tls_schannel_protocol !tls_securetransport_protocol !tls_gnutls_protocol"
3072 tls_openssl_protocol_select="tcp_protocol"
3073 tls_schannel_protocol_deps="schannel"
3074 tls_schannel_protocol_select="tcp_protocol"
3075 tls_securetransport_protocol_deps="securetransport"
3076 tls_securetransport_protocol_select="tcp_protocol"
3077 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
3078 udp_protocol_select="network"
3079 udplite_protocol_select="network"
3080 unix_protocol_deps="sys_un_h"
3081 unix_protocol_select="network"
3082
3083 # filters
3084 afftfilt_filter_deps="avcodec"
3085 afftfilt_filter_select="fft"
3086 amovie_filter_deps="avcodec avformat"
3087 aresample_filter_deps="swresample"
3088 ass_filter_deps="libass"
3089 atempo_filter_deps="avcodec"
3090 atempo_filter_select="rdft"
3091 azmq_filter_deps="libzmq"
3092 blackframe_filter_deps="gpl"
3093 boxblur_filter_deps="gpl"
3094 bs2b_filter_deps="libbs2b"
3095 colormatrix_filter_deps="gpl"
3096 cover_rect_filter_deps="avcodec avformat gpl"
3097 cropdetect_filter_deps="gpl"
3098 deinterlace_qsv_filter_deps="libmfx"
3099 deinterlace_vaapi_filter_deps="vaapi"
3100 delogo_filter_deps="gpl"
3101 deshake_filter_select="pixelutils"
3102 drawtext_filter_deps="libfreetype"
3103 eq_filter_deps="gpl"
3104 fftfilt_filter_deps="avcodec"
3105 fftfilt_filter_select="rdft"
3106 find_rect_filter_deps="avcodec avformat gpl"
3107 firequalizer_filter_deps="avcodec"
3108 firequalizer_filter_select="rdft"
3109 flite_filter_deps="libflite"
3110 framerate_filter_select="pixelutils"
3111 frei0r_filter_deps="frei0r dlopen"
3112 frei0r_src_filter_deps="frei0r dlopen"
3113 fspp_filter_deps="gpl"
3114 geq_filter_deps="gpl"
3115 histeq_filter_deps="gpl"
3116 hqdn3d_filter_deps="gpl"
3117 interlace_filter_deps="gpl"
3118 kerndeint_filter_deps="gpl"
3119 ladspa_filter_deps="ladspa dlopen"
3120 mcdeint_filter_deps="avcodec gpl"
3121 movie_filter_deps="avcodec avformat"
3122 mpdecimate_filter_deps="gpl"
3123 mpdecimate_filter_select="pixelutils"
3124 mptestsrc_filter_deps="gpl"
3125 negate_filter_deps="lut_filter"
3126 nnedi_filter_deps="gpl"
3127 ocr_filter_deps="libtesseract"
3128 ocv_filter_deps="libopencv"
3129 owdenoise_filter_deps="gpl"
3130 pan_filter_deps="swresample"
3131 perspective_filter_deps="gpl"
3132 phase_filter_deps="gpl"
3133 pp7_filter_deps="gpl"
3134 pp_filter_deps="gpl postproc"
3135 pullup_filter_deps="gpl"
3136 removelogo_filter_deps="avcodec avformat swscale"
3137 repeatfields_filter_deps="gpl"
3138 resample_filter_deps="avresample"
3139 rubberband_filter_deps="librubberband"
3140 sab_filter_deps="gpl swscale"
3141 scale2ref_filter_deps="swscale"
3142 scale_filter_deps="swscale"
3143 scale_qsv_filter_deps="libmfx"
3144 select_filter_select="pixelutils"
3145 showcqt_filter_deps="avcodec avformat swscale"
3146 showcqt_filter_select="fft"
3147 showfreqs_filter_deps="avcodec"
3148 showfreqs_filter_select="fft"
3149 showspectrum_filter_deps="avcodec"
3150 showspectrum_filter_select="fft"
3151 showspectrumpic_filter_deps="avcodec"
3152 showspectrumpic_filter_select="fft"
3153 signature_filter_deps="gpl avcodec avformat"
3154 smartblur_filter_deps="gpl swscale"
3155 sofalizer_filter_deps="netcdf avcodec"
3156 sofalizer_filter_select="fft"
3157 spectrumsynth_filter_deps="avcodec"
3158 spectrumsynth_filter_select="fft"
3159 spp_filter_deps="gpl avcodec"
3160 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3161 stereo3d_filter_deps="gpl"
3162 subtitles_filter_deps="avformat avcodec libass"
3163 super2xsai_filter_deps="gpl"
3164 pixfmts_super2xsai_test_deps="super2xsai_filter"
3165 tinterlace_filter_deps="gpl"
3166 tinterlace_merge_test_deps="tinterlace_filter"
3167 tinterlace_pad_test_deps="tinterlace_filter"
3168 uspp_filter_deps="gpl avcodec"
3169 vaguedenoiser_filter_deps="gpl"
3170 vidstabdetect_filter_deps="libvidstab"
3171 vidstabtransform_filter_deps="libvidstab"
3172 zmq_filter_deps="libzmq"
3173 zoompan_filter_deps="swscale"
3174 zscale_filter_deps="libzimg"
3175 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3176
3177 # examples
3178 avio_dir_cmd_deps="avformat avutil"
3179 avio_reading_deps="avformat avcodec avutil"
3180 decode_audio_example_deps="avcodec avutil"
3181 decode_video_example_deps="avcodec avutil"
3182 demuxing_decoding_example_deps="avcodec avformat avutil"
3183 encode_audio_example_deps="avcodec avutil"
3184 encode_video_example_deps="avcodec avutil"
3185 extract_mvs_example_deps="avcodec avformat avutil"
3186 filter_audio_example_deps="avfilter avutil"
3187 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3188 filtering_video_example_deps="avfilter avcodec avformat avutil"
3189 http_multiclient_example_deps="avformat avutil fork"
3190 metadata_example_deps="avformat avutil"
3191 muxing_example_deps="avcodec avformat avutil swscale"
3192 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3193 remuxing_example_deps="avcodec avformat avutil"
3194 resampling_audio_example_deps="avutil swresample"
3195 scaling_video_example_deps="avutil swscale"
3196 transcode_aac_example_deps="avcodec avformat swresample"
3197 transcoding_example_deps="avfilter avcodec avformat avutil"
3198
3199 # libraries, in linking order
3200 avcodec_deps="avutil"
3201 avdevice_deps="avformat avcodec avutil"
3202 avfilter_deps="avutil"
3203 avformat_deps="avcodec avutil"
3204 avresample_deps="avutil"
3205 postproc_deps="avutil gpl"
3206 swresample_deps="avutil"
3207 swscale_deps="avutil"
3208
3209 # programs
3210 ffmpeg_deps="avcodec avfilter avformat swresample"
3211 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3212                null_filter
3213                trim_filter"
3214 ffplay_deps="avcodec avformat swscale swresample sdl2"
3215 ffplay_libs='$sdl2_libs'
3216 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3217 ffprobe_deps="avcodec avformat"
3218 ffserver_deps="avformat fork sarestart"
3219 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3220
3221 # documentation
3222 podpages_deps="perl"
3223 manpages_deps="perl pod2man"
3224 htmlpages_deps="perl"
3225 htmlpages_deps_any="makeinfo_html texi2html"
3226 txtpages_deps="perl makeinfo"
3227 doc_deps_any="manpages htmlpages podpages txtpages"
3228
3229 # default parameters
3230
3231 logfile="config.log"
3232
3233 # installation paths
3234 prefix_default="/usr/local"
3235 bindir_default='${prefix}/bin'
3236 datadir_default='${prefix}/share/ffmpeg'
3237 docdir_default='${prefix}/share/doc/ffmpeg'
3238 incdir_default='${prefix}/include'
3239 libdir_default='${prefix}/lib'
3240 mandir_default='${prefix}/share/man'
3241
3242 # toolchain
3243 ar_default="ar"
3244 cc_default="gcc"
3245 cxx_default="g++"
3246 host_cc_default="gcc"
3247 doxygen_default="doxygen"
3248 install="install"
3249 ln_s_default="ln -s -f"
3250 nm_default="nm -g"
3251 objformat="elf"
3252 pkg_config_default=pkg-config
3253 ranlib_default="ranlib"
3254 strip_default="strip"
3255 version_script='--version-script'
3256 yasmexe_default="yasm"
3257 windres_default="windres"
3258
3259 # OS
3260 target_os_default=$(tolower $(uname -s))
3261 host_os=$target_os_default
3262
3263 # machine
3264 if test "$target_os_default" = aix; then
3265     arch_default=$(uname -p)
3266     strip_default="strip -X32_64"
3267 else
3268     arch_default=$(uname -m)
3269 fi
3270 cpu="generic"
3271 intrinsics="none"
3272
3273 # configurable options
3274 enable $PROGRAM_LIST
3275 enable $DOCUMENT_LIST
3276 enable $EXAMPLE_LIST
3277 enable $(filter_out avresample $LIBRARY_LIST)
3278 enable stripping
3279
3280 enable asm
3281 enable debug
3282 enable doc
3283 enable faan faandct faanidct
3284 enable optimizations
3285 enable runtime_cpudetect
3286 enable safe_bitstream_reader
3287 enable static
3288 enable swscale_alpha
3289 enable valgrind_backtrace
3290
3291 sws_max_filter_size_default=256
3292 set_default sws_max_filter_size
3293
3294 # build settings
3295 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3296 LIBPREF="lib"
3297 LIBSUF=".a"
3298 FULLNAME='$(NAME)$(BUILDSUF)'
3299 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3300 SLIBPREF="lib"
3301 SLIBSUF=".so"
3302 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3303 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3304 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3305 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3306 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3307 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3308 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3309
3310 asflags_filter=echo
3311 cflags_filter=echo
3312 ldflags_filter=echo
3313
3314 AS_C='-c'
3315 AS_O='-o $@'
3316 CC_C='-c'
3317 CC_E='-E -o $@'
3318 CC_O='-o $@'
3319 CXX_C='-c'
3320 CXX_O='-o $@'
3321 OBJCC_C='-c'
3322 OBJCC_E='-E -o $@'
3323 OBJCC_O='-o $@'
3324 LD_O='-o $@'
3325 LD_LIB='-l%'
3326 LD_PATH='-L'
3327 HOSTCC_C='-c'
3328 HOSTCC_E='-E -o $@'
3329 HOSTCC_O='-o $@'
3330 HOSTLD_O='-o $@'
3331
3332 host_libs='-lm'
3333 host_cflags_filter=echo
3334 host_ldflags_filter=echo
3335
3336 target_path='$(CURDIR)'
3337
3338 # since the object filename is not given with the -MM flag, the compiler
3339 # is only able to print the basename, and we must add the path ourselves
3340 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3341 DEPFLAGS='-MM'
3342
3343 # find source path
3344 if test -f configure; then
3345     source_path=.
3346 else
3347     source_path=$(cd $(dirname "$0"); pwd)
3348     case "$source_path" in
3349         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3350     esac
3351     test -e "$source_path/config.h" &&
3352         die "Out of tree builds are impossible with config.h in source dir."
3353 fi
3354
3355 for v in "$@"; do
3356     r=${v#*=}
3357     l=${v%"$r"}
3358     r=$(sh_quote "$r")
3359     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3360 done
3361
3362 find_things(){
3363     thing=$1
3364     pattern=$2
3365     file=$source_path/$3
3366     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3367 }
3368
3369 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3370 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3371 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3372 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3373 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3374 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3375 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3376 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3377 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3378
3379 find_things_extern(){
3380     thing=$1
3381     pattern=$2
3382     file=$source_path/$3
3383     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3384 }
3385
3386 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3387 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3388
3389 ALL_COMPONENTS="
3390     $BSF_LIST
3391     $DECODER_LIST
3392     $DEMUXER_LIST
3393     $ENCODER_LIST
3394     $FILTER_LIST
3395     $HWACCEL_LIST
3396     $INDEV_LIST
3397     $MUXER_LIST
3398     $OUTDEV_LIST
3399     $PARSER_LIST
3400     $PROTOCOL_LIST
3401 "
3402
3403 for n in $COMPONENT_LIST; do
3404     v=$(toupper ${n%s})_LIST
3405     eval enable \$$v
3406     eval ${n}_if_any="\$$v"
3407 done
3408
3409 enable $ARCH_EXT_LIST
3410
3411 die_unknown(){
3412     echo "Unknown option \"$1\"."
3413     echo "See $0 --help for available options."
3414     exit 1
3415 }
3416
3417 print_in_columns() {
3418     cols=$(expr $ncols / 24)
3419     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3420 }
3421
3422 show_list() {
3423     suffix=_$1
3424     shift
3425     echo $* | sed s/$suffix//g | print_in_columns
3426     exit 0
3427 }
3428
3429 rand_list(){
3430     IFS=', '
3431     set -- $*
3432     unset IFS
3433     for thing; do
3434         comp=${thing%:*}
3435         prob=${thing#$comp}
3436         prob=${prob#:}
3437         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3438         echo "prob ${prob:-0.5}"
3439         printf '%s\n' $comp
3440     done
3441 }
3442
3443 do_random(){
3444     action=$1
3445     shift
3446     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3447     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3448 }
3449
3450 for opt do
3451     optval="${opt#*=}"
3452     case "$opt" in
3453         --extra-ldflags=*)
3454             add_ldflags $optval
3455         ;;
3456         --extra-ldexeflags=*)
3457             add_ldexeflags $optval
3458         ;;
3459         --extra-ldlibflags=*)
3460             add_ldlibflags $optval
3461         ;;
3462         --extra-libs=*)
3463             add_extralibs $optval
3464         ;;
3465         --disable-devices)
3466             disable $INDEV_LIST $OUTDEV_LIST
3467         ;;
3468         --enable-debug=*)
3469             debuglevel="$optval"
3470         ;;
3471         --disable-programs)
3472             disable $PROGRAM_LIST
3473         ;;
3474         --disable-everything)
3475             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3476         ;;
3477         --disable-all)
3478             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3479             disable $LIBRARY_LIST $PROGRAM_LIST doc
3480             enable avutil
3481         ;;
3482         --enable-random|--disable-random)
3483             action=${opt%%-random}
3484             do_random ${action#--} $COMPONENT_LIST
3485         ;;
3486         --enable-random=*|--disable-random=*)
3487             action=${opt%%-random=*}
3488             do_random ${action#--} $optval
3489         ;;
3490         --enable-*=*|--disable-*=*)
3491             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3492             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3493             eval list=\$$(toupper $thing)_LIST
3494             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3495             list=$(filter "$name" $list)
3496             [ "$list" = "" ] && warn "Option $opt did not match anything"
3497             $action $list
3498         ;;
3499         --enable-?*|--disable-?*)
3500             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3501             if is_in $option $COMPONENT_LIST; then
3502                 test $action = disable && action=unset
3503                 eval $action \$$(toupper ${option%s})_LIST
3504             elif is_in $option $CMDLINE_SELECT; then
3505                 $action $option
3506             else
3507                 die_unknown $opt
3508             fi
3509         ;;
3510         --list-*)
3511             NAME="${opt#--list-}"
3512             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3513             NAME=${NAME%s}
3514             eval show_list $NAME \$$(toupper $NAME)_LIST
3515         ;;
3516         --help|-h) show_help
3517         ;;
3518         --quiet|-q) quiet=yes
3519         ;;
3520         --fatal-warnings) enable fatal_warnings
3521         ;;
3522         *)
3523             optname="${opt%%=*}"
3524             optname="${optname#--}"
3525             optname=$(echo "$optname" | sed 's/-/_/g')
3526             if is_in $optname $CMDLINE_SET; then
3527                 eval $optname='$optval'
3528             elif is_in $optname $CMDLINE_APPEND; then
3529                 append $optname "$optval"
3530             else
3531                 die_unknown $opt
3532             fi
3533         ;;
3534     esac
3535 done
3536
3537 for e in $env; do
3538     eval "export $e"
3539 done
3540
3541 # Mark specifically enabled, but normally autodetected libraries as requested.
3542 for lib in $AUTODETECT_LIBS; do
3543     enabled $lib && request $lib
3544 done
3545
3546 # Enable platform codecs by default.
3547 enable_weak audiotoolbox
3548
3549 # Enable hwaccels by default.
3550 enable_weak d3d11va dxva2 vaapi vda vdpau videotoolbox_hwaccel xvmc
3551 enable_weak xlib
3552
3553 enable_weak cuda cuvid nvenc vda_framework videotoolbox videotoolbox_encoder
3554
3555 disabled logging && logfile=/dev/null
3556
3557 die_license_disabled() {
3558     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3559 }
3560
3561 die_license_disabled_gpl() {
3562     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3563 }
3564
3565 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3566 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3567
3568 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3569 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3570
3571 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3572
3573 # Disable all the library-specific components if the library itself
3574 # is disabled, see AVCODEC_LIST and following _LIST variables.
3575
3576 disable_components(){
3577     disabled ${1} && disable $(
3578         eval components="\$$(toupper ${1})_COMPONENTS"
3579         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3580     )
3581 }
3582
3583 map 'disable_components $v' $LIBRARY_LIST
3584
3585 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3586 set >> $logfile
3587
3588 test -n "$valgrind" && toolchain="valgrind-memcheck"
3589
3590 case "$toolchain" in
3591     *-asan)
3592         cc_default="${toolchain%-asan}"
3593         add_cflags  -fsanitize=address
3594         add_ldflags -fsanitize=address
3595     ;;
3596     *-msan)
3597         cc_default="${toolchain%-msan}"
3598         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3599         add_ldflags -fsanitize=memory
3600     ;;
3601     *-tsan)
3602         cc_default="${toolchain%-tsan}"
3603         add_cflags  -fsanitize=thread -fPIE
3604         add_ldflags -fsanitize=thread -pie
3605         case "$toolchain" in
3606             gcc-tsan)
3607                 add_cflags  -fPIC
3608                 add_ldflags -fPIC
3609                 ;;
3610         esac
3611     ;;
3612     *-usan)
3613         cc_default="${toolchain%-usan}"
3614         add_cflags  -fsanitize=undefined
3615         add_ldflags -fsanitize=undefined
3616     ;;
3617     valgrind-*)
3618         target_exec_default="valgrind"
3619         case "$toolchain" in
3620             valgrind-massif)
3621                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3622                 ;;
3623             valgrind-memcheck)
3624                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3625                 ;;
3626         esac
3627     ;;
3628     msvc)
3629         # Check whether the current MSVC version needs the C99 converter.
3630         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3631         # support enough of C99 to build ffmpeg. Default to the new
3632         # behaviour if the regexp was unable to match anything, since this
3633         # successfully parses the version number of existing supported
3634         # versions that require the converter (MSVC 2010 and 2012).
3635         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3636         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3637             cc_default="cl"
3638         else
3639             cc_default="c99wrap cl"
3640         fi
3641         ld_default="$source_path/compat/windows/mslink"
3642         nm_default="dumpbin -symbols"
3643         ar_default="lib"
3644         case "$arch" in
3645         arm*)
3646             as_default="armasm"
3647             ;;
3648         esac
3649         target_os_default="win32"
3650         # Use a relative path for TMPDIR. This makes sure all the
3651         # ffconf temp files are written with a relative path, avoiding
3652         # issues with msys/win32 path conversion for MSVC parameters
3653         # such as -Fo<file> or -out:<file>.
3654         TMPDIR=.
3655     ;;
3656     icl)
3657         cc_default="icl"
3658         ld_default="xilink"
3659         nm_default="dumpbin -symbols"
3660         ar_default="xilib"
3661         target_os_default="win32"
3662         TMPDIR=.
3663     ;;
3664     gcov)
3665         add_cflags  -fprofile-arcs -ftest-coverage
3666         add_ldflags -fprofile-arcs -ftest-coverage
3667     ;;
3668     llvm-cov)
3669         add_cflags -fprofile-arcs -ftest-coverage
3670         add_ldflags --coverage
3671     ;;
3672     hardened)
3673         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3674         add_cflags   -fno-strict-overflow -fstack-protector-all
3675         add_ldflags  -Wl,-z,relro -Wl,-z,now
3676         add_cflags   -fPIE
3677         add_ldexeflags -fPIE -pie
3678     ;;
3679     ?*)
3680         die "Unknown toolchain $toolchain"
3681     ;;
3682 esac
3683
3684 test -n "$cross_prefix" && enable cross_compile
3685
3686 if enabled cross_compile; then
3687     test -n "$arch" && test -n "$target_os" ||
3688         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3689 fi
3690
3691 ar_default="${cross_prefix}${ar_default}"
3692 cc_default="${cross_prefix}${cc_default}"
3693 cxx_default="${cross_prefix}${cxx_default}"
3694 nm_default="${cross_prefix}${nm_default}"
3695 pkg_config_default="${cross_prefix}${pkg_config_default}"
3696 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3697     ranlib_default="${cross_prefix}${ranlib_default} -D"
3698 else
3699     ranlib_default="${cross_prefix}${ranlib_default}"
3700 fi
3701 strip_default="${cross_prefix}${strip_default}"
3702 windres_default="${cross_prefix}${windres_default}"
3703
3704 sysinclude_default="${sysroot}/usr/include"
3705
3706 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3707     target_exec target_os yasmexe
3708 enabled cross_compile || host_cc_default=$cc
3709 set_default host_cc
3710
3711 pkg_config_fail_message=""
3712 if ! $pkg_config --version >/dev/null 2>&1; then
3713     warn "$pkg_config not found, library detection may fail."
3714     pkg_config=false
3715 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3716     pkg_config_fail_message="
3717 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3718 fi
3719
3720 if test $doxygen != $doxygen_default && \
3721   ! $doxygen --version >/dev/null 2>&1; then
3722     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3723 fi
3724
3725 exesuf() {
3726     case $1 in
3727         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3728     esac
3729 }
3730
3731 EXESUF=$(exesuf $target_os)
3732 HOSTEXESUF=$(exesuf $host_os)
3733
3734 # set temporary file name
3735 : ${TMPDIR:=$TEMPDIR}
3736 : ${TMPDIR:=$TMP}
3737 : ${TMPDIR:=/tmp}
3738
3739 if [ -n "$tempprefix" ] ; then
3740     mktemp(){
3741         echo $tempprefix.${HOSTNAME}.${UID}
3742     }
3743 elif ! check_cmd mktemp -u XXXXXX; then
3744     # simple replacement for missing mktemp
3745     # NOT SAFE FOR GENERAL USE
3746     mktemp(){
3747         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3748     }
3749 fi
3750
3751 tmpfile(){
3752     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3753         (set -C; exec > $tmp) 2>/dev/null ||
3754         die "Unable to create temporary file in $TMPDIR."
3755     append TMPFILES $tmp
3756     eval $1=$tmp
3757 }
3758
3759 trap 'rm -f -- $TMPFILES' EXIT
3760
3761 tmpfile TMPASM .asm
3762 tmpfile TMPC   .c
3763 tmpfile TMPCPP .cpp
3764 tmpfile TMPE   $EXESUF
3765 tmpfile TMPH   .h
3766 tmpfile TMPM   .m
3767 tmpfile TMPO   .o
3768 tmpfile TMPS   .S
3769 tmpfile TMPSH  .sh
3770 tmpfile TMPV   .ver
3771
3772 unset -f mktemp
3773
3774 chmod +x $TMPE
3775
3776 # make sure we can execute files in $TMPDIR
3777 cat > $TMPSH 2>> $logfile <<EOF
3778 #! /bin/sh
3779 EOF
3780 chmod +x $TMPSH >> $logfile 2>&1
3781 if ! $TMPSH >> $logfile 2>&1; then
3782     cat <<EOF
3783 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3784 variable to another directory and make sure that it is not mounted noexec.
3785 EOF
3786     die "Sanity test failed."
3787 fi
3788
3789 armasm_flags(){
3790     for flag; do
3791         case $flag in
3792             # Filter out MSVC cl.exe options from cflags that shouldn't
3793             # be passed to gas-preprocessor
3794             -M[TD]*)                                            ;;
3795             *)                  echo $flag                      ;;
3796         esac
3797    done
3798 }
3799
3800 ccc_flags(){
3801     for flag; do
3802         case $flag in
3803             -std=c99)           echo -c99                       ;;
3804             -mcpu=*)            echo -arch ${flag#*=}           ;;
3805             -mieee)             echo -ieee                      ;;
3806             -O*|-fast)          echo $flag                      ;;
3807             -fno-math-errno)    echo -assume nomath_errno       ;;
3808             -g)                 echo -g3                        ;;
3809             -Wall)              echo -msg_enable level2         ;;
3810             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3811             -Wl,*)              echo $flag                      ;;
3812             -f*|-W*)                                            ;;
3813             *)                  echo $flag                      ;;
3814         esac
3815    done
3816 }
3817
3818 cparser_flags(){
3819     for flag; do
3820         case $flag in
3821             -Wno-switch)             echo -Wno-switch-enum ;;
3822             -Wno-format-zero-length) ;;
3823             -Wdisabled-optimization) ;;
3824             -Wno-pointer-sign)       echo -Wno-other ;;
3825             *)                       echo $flag ;;
3826         esac
3827     done
3828 }
3829
3830 msvc_common_flags(){
3831     for flag; do
3832         case $flag in
3833             # In addition to specifying certain flags under the compiler
3834             # specific filters, they must be specified here as well or else the
3835             # generic catch all at the bottom will print the original flag.
3836             -Wall)                ;;
3837             -std=c99)             ;;
3838             # Common flags
3839             -fomit-frame-pointer) ;;
3840             -g)                   echo -Z7 ;;
3841             -fno-math-errno)      ;;
3842             -fno-common)          ;;
3843             -fno-signed-zeros)    ;;
3844             -fPIC)                ;;
3845             -mthumb)              ;;
3846             -march=*)             ;;
3847             -lz)                  echo zlib.lib ;;
3848             -lavicap32)           echo vfw32.lib user32.lib ;;
3849             -lx264)               echo libx264.lib ;;
3850             -l*)                  echo ${flag#-l}.lib ;;
3851             -LARGEADDRESSAWARE)   echo $flag ;;
3852             -L*)                  echo -libpath:${flag#-L} ;;
3853             *)                    echo $flag ;;
3854         esac
3855     done
3856 }
3857
3858 msvc_flags(){
3859     msvc_common_flags "$@"
3860     for flag; do
3861         case $flag in
3862             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3863                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3864                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3865                                        -wd4307 \
3866                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
3867         esac
3868     done
3869 }
3870
3871 icl_flags(){
3872     msvc_common_flags "$@"
3873     for flag; do
3874         case $flag in
3875             # Despite what Intel's documentation says -Wall, which is supported
3876             # on Windows, does enable remarks so disable them here.
3877             -Wall)                echo $flag -Qdiag-disable:remark ;;
3878             -std=c99)             echo -Qstd=c99 ;;
3879             -flto)                echo -ipo ;;
3880         esac
3881     done
3882 }
3883
3884 icc_flags(){
3885     for flag; do
3886         case $flag in
3887             -flto)                echo -ipo ;;
3888             *)                    echo $flag ;;
3889         esac
3890     done
3891 }
3892
3893 pgi_flags(){
3894     for flag; do
3895         case $flag in
3896             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3897             -fomit-frame-pointer) echo -Mnoframe ;;
3898             -g)                   echo -gopt ;;
3899             *)                    echo $flag ;;
3900         esac
3901     done
3902 }
3903
3904 suncc_flags(){
3905     for flag; do
3906         case $flag in
3907             -march=*|-mcpu=*)
3908                 case "${flag#*=}" in
3909                     native)                   echo -xtarget=native       ;;
3910                     v9|niagara)               echo -xarch=sparc          ;;
3911                     ultrasparc)               echo -xarch=sparcvis       ;;
3912                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3913                     i586|pentium)             echo -xchip=pentium        ;;
3914                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3915                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3916                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3917                     pentium4*)          echo -xtarget=pentium4           ;;
3918                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3919                     *-sse3)             echo -xarch=sse3                 ;;
3920                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3921                     bonnell)                   echo -xarch=ssse3         ;;
3922                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3923                     westmere)                  echo -xtarget=westmere    ;;
3924                     silvermont)                echo -xarch=sse4_2        ;;
3925                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3926                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
3927                                                echo -xarch=avx           ;;
3928                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3929                     btver1)                    echo -xarch=amdsse4a      ;;
3930                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
3931                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3932                     k8|opteron|athlon64|athlon-fx)
3933                                                echo -xarch=sse2a         ;;
3934                     athlon*)                   echo -xarch=pentium_proa  ;;
3935                 esac
3936                 ;;
3937             -std=c99)             echo -xc99              ;;
3938             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3939             -fPIC)                echo -KPIC -xcode=pic32 ;;
3940             -W*,*)                echo $flag              ;;
3941             -f*-*|-W*|-mimpure-text)                      ;;
3942             -shared)              echo -G                 ;;
3943             *)                    echo $flag              ;;
3944         esac
3945     done
3946 }
3947
3948 tms470_flags(){
3949     for flag; do
3950         case $flag in
3951             -march=*|-mcpu=*)
3952                 case "${flag#*=}" in
3953                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3954                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3955                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3956                     armv6*|arm11*)          echo -mv=6   ;;
3957                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3958                                             echo -mv=5e  ;;
3959                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3960                 esac
3961                 ;;
3962             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3963             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3964             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3965             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3966             -msoft-float)   echo --float_support=vfplib       ;;
3967             -O[0-3]|-mf=*)  echo $flag                        ;;
3968             -g)             echo -g -mn                       ;;
3969             -pds=*)         echo $flag                        ;;
3970             -D*|-I*)        echo $flag                        ;;
3971             --gcc|--abi=*)  echo $flag                        ;;
3972             -me)            echo $flag                        ;;
3973         esac
3974     done
3975 }
3976
3977 probe_cc(){
3978     pfx=$1
3979     _cc=$2
3980     first=$3
3981
3982     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3983     unset _ld_o _ldflags _ld_lib _ld_path
3984     unset _depflags _DEPCMD _DEPFLAGS
3985     _flags_filter=echo
3986
3987     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3988         true # no-op to avoid reading stdin in following checks
3989     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3990         _type=llvm_gcc
3991         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3992         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3993         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3994         _cflags_speed='-O3'
3995         _cflags_size='-Os'
3996     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3997         _type=gcc
3998         gcc_version=$($_cc --version | head -n1)
3999         gcc_basever=$($_cc -dumpversion)
4000         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4001         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4002         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4003         case $gcc_basever in
4004             2) ;;
4005             2.*) ;;
4006             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4007         esac
4008         if [ "$first" = true ]; then
4009             case $gcc_basever in
4010                 4.2*)
4011                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4012             esac
4013         fi
4014         _cflags_speed='-O3'
4015         _cflags_size='-Os'
4016     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4017         _type=icc
4018         _ident=$($_cc --version | head -n1)
4019         _depflags='-MMD'
4020         _cflags_speed='-O3'
4021         _cflags_size='-Os'
4022         _cflags_noopt='-O1'
4023         _flags_filter=icc_flags
4024     elif $_cc -v 2>&1 | grep -q xlc; then
4025         _type=xlc
4026         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4027         _cflags_speed='-O5'
4028         _cflags_size='-O5 -qcompact'
4029     elif $_cc -V 2>/dev/null | grep -q Compaq; then
4030         _type=ccc
4031         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
4032         _DEPFLAGS='-M'
4033         _cflags_speed='-fast'
4034         _cflags_size='-O1'
4035         _flags_filter=ccc_flags
4036     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4037         test -d "$sysroot" || die "No valid sysroot specified."
4038         _type=armcc
4039         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4040         armcc_conf="$PWD/armcc.conf"
4041         $_cc --arm_linux_configure                 \
4042              --arm_linux_config_file="$armcc_conf" \
4043              --configure_sysroot="$sysroot"        \
4044              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4045              die "Error creating armcc configuration file."
4046         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4047         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4048         as_default="${cross_prefix}gcc"
4049         _depflags='-MMD'
4050         _cflags_speed='-O3'
4051         _cflags_size='-Os'
4052     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
4053         _type=tms470
4054         _ident=$($_cc -version | head -n1 | tr -s ' ')
4055         _flags='--gcc --abi=eabi -me'
4056         _cc_e='-ppl -fe=$@'
4057         _cc_o='-fe=$@'
4058         _depflags='-ppa -ppd=$(@:.o=.d)'
4059         _cflags_speed='-O3 -mf=5'
4060         _cflags_size='-O3 -mf=2'
4061         _flags_filter=tms470_flags
4062     elif $_cc -v 2>&1 | grep -q clang; then
4063         _type=clang
4064         _ident=$($_cc --version 2>/dev/null | head -n1)
4065         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4066         _cflags_speed='-O3'
4067         _cflags_size='-Oz'
4068     elif $_cc -V 2>&1 | grep -q Sun; then
4069         _type=suncc
4070         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4071         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4072         _DEPFLAGS='-xM1 -xc99'
4073         _ldflags='-std=c99'
4074         _cflags_speed='-O5'
4075         _cflags_size='-O5 -xspace'
4076         _flags_filter=suncc_flags
4077     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4078         _type=pathscale
4079         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4080         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4081         _cflags_speed='-O2'
4082         _cflags_size='-Os'
4083         _flags_filter='filter_out -Wdisabled-optimization'
4084     elif $_cc -v 2>&1 | grep -q Open64; then
4085         _type=open64
4086         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4087         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4088         _cflags_speed='-O2'
4089         _cflags_size='-Os'
4090         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4091     elif $_cc -V 2>&1 | grep -q Portland; then
4092         _type=pgi
4093         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
4094         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
4095         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
4096         _cflags_size="-O2 -Munroll=c:1 $opt_common"
4097         _cflags_noopt="-O"
4098         _flags_filter=pgi_flags
4099     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4100         _type=armasm
4101         _ident=$($_cc | head -n1)
4102         # 4509: "This form of conditional instruction is deprecated"
4103         _flags="-nologo -ignore 4509"
4104         _flags_filter=armasm_flags
4105     elif $_cc 2>&1 | grep -q Intel; then
4106         _type=icl
4107         _ident=$($_cc 2>&1 | head -n1)
4108         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4109         # Not only is O3 broken on 13.x+ but it is slower on all previous
4110         # versions (tested) as well.
4111         _cflags_speed="-O2"
4112         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4113         if $_cc 2>&1 | grep -q Linker; then
4114             _ld_o='-out:$@'
4115         else
4116             _ld_o='-Fe$@'
4117         fi
4118         _cc_o='-Fo$@'
4119         _cc_e='-P'
4120         _flags_filter=icl_flags
4121         _ld_lib='lib%.a'
4122         _ld_path='-libpath:'
4123         # -Qdiag-error to make icl error when seeing certain unknown arguments
4124         _flags='-nologo -Qdiag-error:4044,10157'
4125         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4126         # with MSVC which enables it by default.
4127         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4128         disable stripping
4129     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4130         # lld can emulate multiple different linkers; in ms link.exe mode,
4131         # the -? parameter gives the help output which contains an identifyable
4132         # string, while it gives an error in other modes.
4133         _type=lld-link
4134         # The link.exe mode doesn't have a switch for getting the version,
4135         # but we can force it back to gnu mode and get the version from there.
4136         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4137         _ld_o='-out:$@'
4138         _flags_filter=msvc_flags
4139         _ld_lib='lib%.a'
4140         _ld_path='-libpath:'
4141     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4142         _type=msvc
4143         _ident=$($_cc 2>&1 | head -n1)
4144         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4145         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4146         _cflags_speed="-O2"
4147         _cflags_size="-O1"
4148         if $_cc -nologo- 2>&1 | grep -q Linker; then
4149             _ld_o='-out:$@'
4150         else
4151             _ld_o='-Fe$@'
4152         fi
4153         _cc_o='-Fo$@'
4154         _cc_e='-P -Fi$@'
4155         _flags_filter=msvc_flags
4156         _ld_lib='lib%.a'
4157         _ld_path='-libpath:'
4158         _flags='-nologo'
4159         disable stripping
4160     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4161         _type=cparser
4162         _ident=$($_cc --version | head -n1)
4163         _depflags='-MMD'
4164         _cflags_speed='-O4'
4165         _cflags_size='-O2'
4166         _flags_filter=cparser_flags
4167     fi
4168
4169     eval ${pfx}_type=\$_type
4170     eval ${pfx}_ident=\$_ident
4171 }
4172
4173 set_ccvars(){
4174     eval ${1}_C=\${_cc_c-\${${1}_C}}
4175     eval ${1}_E=\${_cc_e-\${${1}_E}}
4176     eval ${1}_O=\${_cc_o-\${${1}_O}}
4177
4178     if [ -n "$_depflags" ]; then
4179         eval ${1}_DEPFLAGS=\$_depflags
4180     else
4181         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4182         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4183         eval DEP${1}FLAGS=\$_flags
4184     fi
4185 }
4186
4187 probe_cc cc "$cc" "true"
4188 cflags_filter=$_flags_filter
4189 cflags_speed=$_cflags_speed
4190 cflags_size=$_cflags_size
4191 cflags_noopt=$_cflags_noopt
4192 add_cflags $_flags $_cflags
4193 cc_ldflags=$_ldflags
4194 set_ccvars CC
4195
4196 probe_cc hostcc "$host_cc"
4197 host_cflags_filter=$_flags_filter
4198 add_host_cflags  $_flags $_cflags
4199 set_ccvars HOSTCC
4200
4201 test -n "$cc_type" && enable $cc_type ||
4202     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4203
4204 : ${as_default:=$cc}
4205 : ${objcc_default:=$cc}
4206 : ${dep_cc_default:=$cc}
4207 : ${ld_default:=$cc}
4208 : ${host_ld_default:=$host_cc}
4209 set_default ar as objcc dep_cc ld ln_s host_ld windres
4210
4211 probe_cc as "$as"
4212 asflags_filter=$_flags_filter
4213 add_asflags $_flags $_cflags
4214 set_ccvars AS
4215
4216 probe_cc objcc "$objcc"
4217 objcflags_filter=$_flags_filter
4218 add_objcflags $_flags $_cflags
4219 set_ccvars OBJC
4220
4221 probe_cc ld "$ld"
4222 ldflags_filter=$_flags_filter
4223 add_ldflags $_flags $_ldflags
4224 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4225 LD_O=${_ld_o-$LD_O}
4226 LD_LIB=${_ld_lib-$LD_LIB}
4227 LD_PATH=${_ld_path-$LD_PATH}
4228
4229 probe_cc hostld "$host_ld"
4230 host_ldflags_filter=$_flags_filter
4231 add_host_ldflags $_flags $_ldflags
4232 HOSTLD_O=${_ld_o-$HOSTLD_O}
4233
4234 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4235     probe_cc depcc "$dep_cc"
4236     CCDEP=${_DEPCMD:-$DEPCMD}
4237     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4238     DEPCCFLAGS=$_flags
4239 fi
4240
4241 if $ar 2>&1 | grep -q Microsoft; then
4242     arflags="-nologo"
4243     ar_o='-out:$@'
4244 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
4245     arflags="rq"
4246     ar_o='$@'
4247 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
4248     arflags='-Xany -r -c'
4249     ar_o='$@'
4250 elif $ar 2>&1 | grep -q "\[D\] "; then
4251     arflags="rcD"
4252     ar_o='$@'
4253 else
4254     arflags="rc"
4255     ar_o='$@'
4256 fi
4257
4258 add_cflags $extra_cflags
4259 add_cxxflags $extra_cxxflags
4260 add_objcflags $extra_objcflags
4261 add_asflags $extra_cflags
4262
4263 if test -n "$sysroot"; then
4264     case "$cc_type" in
4265         gcc|llvm_gcc|clang)
4266             add_cppflags --sysroot="$sysroot"
4267             add_ldflags --sysroot="$sysroot"
4268 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
4269             add_cppflags -isysroot "$sysroot"
4270             add_ldflags -isysroot "$sysroot"
4271         ;;
4272         tms470)
4273             add_cppflags -I"$sysinclude"
4274             add_ldflags  --sysroot="$sysroot"
4275         ;;
4276     esac
4277 fi
4278
4279 if test "$cpu" = host; then
4280     enabled cross_compile &&
4281         die "--cpu=host makes no sense when cross-compiling."
4282
4283     case "$cc_type" in
4284         gcc|llvm_gcc)
4285             check_native(){
4286                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4287                 sed -n "/cc1.*$1=/{
4288                             s/.*$1=\\([^ ]*\\).*/\\1/
4289                             p
4290                             q
4291                         }" $TMPE
4292             }
4293             cpu=$(check_native -march || check_native -mcpu)
4294         ;;
4295         clang)
4296             check_native(){
4297                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4298                 sed -n "/cc1.*-target-cpu /{
4299                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4300                             p
4301                             q
4302                         }" $TMPE
4303             }
4304             cpu=$(check_native -march)
4305         ;;
4306     esac
4307
4308     test "${cpu:-host}" = host &&
4309         die "--cpu=host not supported with compiler $cc"
4310 fi
4311
4312 # Deal with common $arch aliases
4313 case "$arch" in
4314     aarch64|arm64)
4315         arch="aarch64"
4316     ;;
4317     arm*|iPad*|iPhone*)
4318         arch="arm"
4319     ;;
4320     mips*|IP*)
4321         case "$arch" in
4322         *el)
4323             add_cppflags -EL
4324             add_ldflags -EL
4325         ;;
4326         *eb)
4327             add_cppflags -EB
4328             add_ldflags -EB
4329         ;;
4330         esac
4331         arch="mips"
4332     ;;
4333     parisc*|hppa*)
4334         arch="parisc"
4335     ;;
4336     "Power Macintosh"|ppc*|powerpc*)
4337         arch="ppc"
4338     ;;
4339     s390|s390x)
4340         arch="s390"
4341     ;;
4342     sh4|sh)
4343         arch="sh4"
4344     ;;
4345     sun4*|sparc*)
4346         arch="sparc"
4347     ;;
4348     tilegx|tile-gx)
4349         arch="tilegx"
4350     ;;
4351     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4352         arch="x86"
4353     ;;
4354 esac
4355
4356 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4357 enable $arch
4358
4359 # Add processor-specific flags
4360 if enabled aarch64; then
4361
4362     case $cpu in
4363         armv*)
4364             cpuflags="-march=$cpu"
4365         ;;
4366         *)
4367             cpuflags="-mcpu=$cpu"
4368         ;;
4369     esac
4370
4371 elif enabled alpha; then
4372
4373     cpuflags="-mcpu=$cpu"
4374
4375 elif enabled arm; then
4376
4377     check_arm_arch() {
4378         check_cpp_condition stddef.h \
4379             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4380             $cpuflags
4381     }
4382
4383     probe_arm_arch() {
4384         if   check_arm_arch 4;        then echo armv4
4385         elif check_arm_arch 4T;       then echo armv4t
4386         elif check_arm_arch 5;        then echo armv5
4387         elif check_arm_arch 5E;       then echo armv5e
4388         elif check_arm_arch 5T;       then echo armv5t
4389         elif check_arm_arch 5TE;      then echo armv5te
4390         elif check_arm_arch 5TEJ;     then echo armv5te
4391         elif check_arm_arch 6;        then echo armv6
4392         elif check_arm_arch 6J;       then echo armv6j
4393         elif check_arm_arch 6K;       then echo armv6k
4394         elif check_arm_arch 6Z;       then echo armv6z
4395         elif check_arm_arch 6ZK;      then echo armv6zk
4396         elif check_arm_arch 6T2;      then echo armv6t2
4397         elif check_arm_arch 7;        then echo armv7
4398         elif check_arm_arch 7A  7_A;  then echo armv7-a
4399         elif check_arm_arch 7S;       then echo armv7-a
4400         elif check_arm_arch 7R  7_R;  then echo armv7-r
4401         elif check_arm_arch 7M  7_M;  then echo armv7-m
4402         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4403         elif check_arm_arch 8A  8_A;  then echo armv8-a
4404         fi
4405     }
4406
4407     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4408
4409     case $cpu in
4410         armv*)
4411             cpuflags="-march=$cpu"
4412             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4413         ;;
4414         *)
4415             cpuflags="-mcpu=$cpu"
4416             case $cpu in
4417                 cortex-a*)                               subarch=armv7a  ;;
4418                 cortex-r*)                               subarch=armv7r  ;;
4419                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4420                 arm11*)                                  subarch=armv6   ;;
4421                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4422                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4423                 *)                             subarch=$(probe_arm_arch) ;;
4424             esac
4425         ;;
4426     esac
4427
4428     case "$subarch" in
4429         armv5t*)    enable fast_clz                ;;
4430         armv[6-8]*)
4431             enable fast_clz
4432             disabled fast_unaligned || enable fast_unaligned
4433             ;;
4434     esac
4435
4436 elif enabled avr32; then
4437
4438     case $cpu in
4439         ap7[02]0[0-2])
4440             subarch="avr32_ap"
4441             cpuflags="-mpart=$cpu"
4442         ;;
4443         ap)
4444             subarch="avr32_ap"
4445             cpuflags="-march=$cpu"
4446         ;;
4447         uc3[ab]*)
4448             subarch="avr32_uc"
4449             cpuflags="-mcpu=$cpu"
4450         ;;
4451         uc)
4452             subarch="avr32_uc"
4453             cpuflags="-march=$cpu"
4454         ;;
4455     esac
4456
4457 elif enabled bfin; then
4458
4459     cpuflags="-mcpu=$cpu"
4460
4461 elif enabled mips; then
4462
4463     cpuflags="-march=$cpu"
4464
4465     if [ "$cpu" != "generic" ]; then
4466         disable mips32r2
4467         disable mips32r5
4468         disable mips64r2
4469         disable mips32r6
4470         disable mips64r6
4471         disable loongson2
4472         disable loongson3
4473
4474         case $cpu in
4475             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4476                 enable mips32r2
4477                 disable msa
4478             ;;
4479             p5600|i6400|p6600)
4480                 disable mipsdsp
4481                 disable mipsdspr2
4482             ;;
4483             loongson*)
4484                 enable loongson2
4485                 enable loongson3
4486                 enable local_aligned_8 local_aligned_16 local_aligned_32
4487                 enable simd_align_16
4488                 enable fast_64bit
4489                 enable fast_clz
4490                 enable fast_cmov
4491                 enable fast_unaligned
4492                 disable aligned_stack
4493                 disable mipsfpu
4494                 disable mipsdsp
4495                 disable mipsdspr2
4496                 case $cpu in
4497                     loongson3*)
4498                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4499                     ;;
4500                     loongson2e)
4501                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4502                     ;;
4503                     loongson2f)
4504                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4505                     ;;
4506                 esac
4507             ;;
4508             *)
4509                 # Unknown CPU. Disable everything.
4510                 warn "unknown CPU. Disabling all MIPS optimizations."
4511                 disable mipsfpu
4512                 disable mipsdsp
4513                 disable mipsdspr2
4514                 disable msa
4515                 disable mmi
4516             ;;
4517         esac
4518
4519         case $cpu in
4520             24kc)
4521                 disable mipsfpu
4522                 disable mipsdsp
4523                 disable mipsdspr2
4524             ;;
4525             24kf*)
4526                 disable mipsdsp
4527                 disable mipsdspr2
4528             ;;
4529             24kec|34kc|1004kc)
4530                 disable mipsfpu
4531                 disable mipsdspr2
4532             ;;
4533             24kef*|34kf*|1004kf*)
4534                 disable mipsdspr2
4535             ;;
4536             74kc)
4537                 disable mipsfpu
4538             ;;
4539             p5600)
4540                 enable mips32r5
4541                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4542             ;;
4543             i6400)
4544                 enable mips64r6
4545                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4546             ;;
4547             p6600)
4548                 enable mips64r6
4549                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4550             ;;
4551         esac
4552     else
4553         # We do not disable anything. Is up to the user to disable the unwanted features.
4554         warn 'generic cpu selected'
4555     fi
4556
4557 elif enabled ppc; then
4558
4559     disable ldbrx
4560
4561     case $(tolower $cpu) in
4562         601|ppc601|powerpc601)
4563             cpuflags="-mcpu=601"
4564             disable altivec
4565         ;;
4566         603*|ppc603*|powerpc603*)
4567             cpuflags="-mcpu=603"
4568             disable altivec
4569         ;;
4570         604*|ppc604*|powerpc604*)
4571             cpuflags="-mcpu=604"
4572             disable altivec
4573         ;;
4574         g3|75*|ppc75*|powerpc75*)
4575             cpuflags="-mcpu=750"
4576             disable altivec
4577         ;;
4578         g4|745*|ppc745*|powerpc745*)
4579             cpuflags="-mcpu=7450"
4580             disable vsx
4581         ;;
4582         74*|ppc74*|powerpc74*)
4583             cpuflags="-mcpu=7400"
4584             disable vsx
4585         ;;
4586         g5|970|ppc970|powerpc970)
4587             cpuflags="-mcpu=970"
4588             disable vsx
4589         ;;
4590         power[3-6]*)
4591             cpuflags="-mcpu=$cpu"
4592             disable vsx
4593         ;;
4594         power[7-8]*)
4595             cpuflags="-mcpu=$cpu"
4596         ;;
4597         cell)
4598             cpuflags="-mcpu=cell"
4599             enable ldbrx
4600             disable vsx
4601         ;;
4602         e500mc)
4603             cpuflags="-mcpu=e500mc"
4604             disable altivec
4605         ;;
4606         e500v2)
4607             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4608             disable altivec
4609             disable dcbzl
4610         ;;
4611         e500)
4612             cpuflags="-mcpu=8540 -mhard-float"
4613             disable altivec
4614             disable dcbzl
4615         ;;
4616     esac
4617
4618 elif enabled sparc; then
4619
4620     case $cpu in
4621         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4622             cpuflags="-mcpu=$cpu"
4623         ;;
4624         ultrasparc*|niagara[234])
4625             cpuflags="-mcpu=$cpu"
4626         ;;
4627     esac
4628
4629 elif enabled x86; then
4630
4631     case $cpu in
4632         i[345]86|pentium)
4633             cpuflags="-march=$cpu"
4634             disable i686
4635             disable mmx
4636         ;;
4637         # targets that do NOT support nopl and conditional mov (cmov)
4638         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4639             cpuflags="-march=$cpu"
4640             disable i686
4641         ;;
4642         # targets that do support nopl and conditional mov (cmov)
4643         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4644         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4645         |amdfam10|barcelona|b[dt]ver*|znver*)
4646             cpuflags="-march=$cpu"
4647             enable i686
4648             enable fast_cmov
4649         ;;
4650         # targets that do support conditional mov but on which it's slow
4651         pentium4|pentium4m|prescott|nocona)
4652             cpuflags="-march=$cpu"
4653             enable i686
4654             disable fast_cmov
4655         ;;
4656     esac
4657
4658 fi
4659
4660 if [ "$cpu" != generic ]; then
4661     add_cflags  $cpuflags
4662     add_asflags $cpuflags
4663     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4664 fi
4665
4666 # compiler sanity check
4667 check_exec <<EOF
4668 int main(void){ return 0; }
4669 EOF
4670 if test "$?" != 0; then
4671     echo "$cc is unable to create an executable file."
4672     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4673         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4674         echo "Only do this if you know what cross compiling means."
4675     fi
4676     die "C compiler test failed."
4677 fi
4678
4679 add_cppflags -D_ISOC99_SOURCE
4680 add_cxxflags -D__STDC_CONSTANT_MACROS
4681 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4682
4683 # some compilers silently accept -std=c11, so we also need to check that the
4684 # version macro is defined properly
4685 if test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L"; then
4686     add_cflags -std=c11
4687 else
4688     check_cflags -std=c99
4689 fi
4690
4691 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4692 #include <stdlib.h>
4693 EOF
4694 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4695 #include <stdlib.h>
4696 EOF
4697
4698 add_host_cppflags -D_ISOC99_SOURCE
4699 check_host_cflags -std=c99
4700 check_host_cflags -Wall
4701 check_host_cflags -O3
4702
4703 check_64bit(){
4704     arch32=$1
4705     arch64=$2
4706     expr=$3
4707     check_code cc "" "int test[2*($expr) - 1]" &&
4708         subarch=$arch64 || subarch=$arch32
4709 }
4710
4711 case "$arch" in
4712     aarch64|alpha|ia64)
4713         spic=$shared
4714     ;;
4715     mips)
4716         check_64bit mips mips64 '_MIPS_SIM > 1'
4717         spic=$shared
4718     ;;
4719     parisc)
4720         check_64bit parisc parisc64 'sizeof(void *) > 4'
4721         spic=$shared
4722     ;;
4723     ppc)
4724         check_64bit ppc ppc64 'sizeof(void *) > 4'
4725         spic=$shared
4726     ;;
4727     s390)
4728         check_64bit s390 s390x 'sizeof(void *) > 4'
4729         spic=$shared
4730     ;;
4731     sparc)
4732         check_64bit sparc sparc64 'sizeof(void *) > 4'
4733         spic=$shared
4734     ;;
4735     x86)
4736         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4737         # Treat x32 as x64 for now. Note it also needs spic=$shared
4738         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4739             subarch=x86_64
4740         if test "$subarch" = "x86_64"; then
4741             spic=$shared
4742         fi
4743     ;;
4744     ppc)
4745         check_cc <<EOF && subarch="ppc64"
4746         int test[(int)sizeof(char*) - 7];
4747 EOF
4748     ;;
4749 esac
4750
4751 enable $subarch
4752 enabled spic && enable_weak pic
4753
4754 # OS specific
4755 case $target_os in
4756     aix)
4757         SHFLAGS=-shared
4758         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4759         enabled shared && add_ldflags -Wl,-brtl
4760         ;;
4761     android)
4762         disable symver
4763         enable section_data_rel_ro
4764         SLIB_INSTALL_NAME='$(SLIBNAME)'
4765         SLIB_INSTALL_LINKS=
4766         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4767         ;;
4768     haiku)
4769         prefix_default="/boot/common"
4770         network_extralibs="-lnetwork"
4771         host_libs=
4772         ;;
4773     sunos)
4774         SHFLAGS='-shared -Wl,-h,$$(@F)'
4775         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4776         network_extralibs="-lsocket -lnsl"
4777         add_cppflags -D__EXTENSIONS__
4778         # When using suncc to build, the Solaris linker will mark
4779         # an executable with each instruction set encountered by
4780         # the Solaris assembler.  As our libraries contain their own
4781         # guards for processor-specific code, instead suppress
4782         # generation of the HWCAPS ELF section on Solaris x86 only.
4783         enabled_all suncc x86 &&
4784             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4785             add_ldflags -Wl,-M,mapfile
4786         nm_default='nm -P -g'
4787         version_script='-M'
4788         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
4789         ;;
4790     netbsd)
4791         disable symver
4792         oss_indev_extralibs="-lossaudio"
4793         oss_outdev_extralibs="-lossaudio"
4794         enabled gcc || check_ldflags -Wl,-zmuldefs
4795         ;;
4796     openbsd|bitrig)
4797         disable symver
4798         SHFLAGS='-shared'
4799         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4800         SLIB_INSTALL_LINKS=
4801         oss_indev_extralibs="-lossaudio"
4802         oss_outdev_extralibs="-lossaudio"
4803         ;;
4804     dragonfly)
4805         disable symver
4806         ;;
4807     freebsd)
4808         ;;
4809     bsd/os)
4810         add_extralibs -lpoll -lgnugetopt
4811         strip="strip -d"
4812         ;;
4813     darwin)
4814         enabled ppc && add_asflags -force_cpusubtype_ALL
4815         install_name_dir_default='$(SHLIBDIR)'
4816         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4817         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4818         strip="${strip} -x"
4819         add_ldflags -Wl,-dynamic,-search_paths_first
4820         SLIBSUF=".dylib"
4821         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4822         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4823         objformat="macho"
4824         enabled x86_64 && objformat="macho64"
4825         enabled_any pic shared x86_64 ||
4826             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4827         check_header dispatch/dispatch.h &&
4828             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
4829         version_script='-exported_symbols_list'
4830         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
4831         ;;
4832     msys*)
4833         die "Native MSYS builds are discouraged, please use the MINGW environment."
4834         ;;
4835     mingw32*|mingw64*)
4836         if test $target_os = "mingw32ce"; then
4837             disable network
4838         else
4839             target_os=mingw32
4840         fi
4841         decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
4842         decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
4843         LIBTARGET=i386
4844         if enabled x86_64; then
4845             LIBTARGET="i386:x86-64"
4846         elif enabled arm; then
4847             LIBTARGET=arm-wince
4848         fi
4849         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4850         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4851         shlibdir_default="$bindir_default"
4852         SLIBPREF=""
4853         SLIBSUF=".dll"
4854         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4855         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4856         dlltool="${cross_prefix}dlltool"
4857         if check_cmd lib.exe -list; then
4858             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4859             if enabled x86_64; then
4860                 LIBTARGET=x64
4861             fi
4862         elif check_cmd $dlltool --version; then
4863             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4864         fi
4865         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4866         SLIB_INSTALL_LINKS=
4867         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4868         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4869         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--disable-auto-image-base'
4870         objformat="win32"
4871         ranlib=:
4872         enable dos_paths
4873         check_ldflags -Wl,--nxcompat,--dynamicbase
4874         # Lets work around some stupidity in binutils.
4875         # ld will strip relocations from executables even though we need them
4876         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4877         # however ld then forgets what the entry point should be (oops) so we
4878         # have to manually (re)set it.
4879         if enabled x86_32; then
4880             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
4881         elif enabled x86_64; then
4882             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
4883             check_ldflags -Wl,--high-entropy-va # binutils 2.25
4884             # Set image base >4GB for extra entropy with HEASLR
4885             add_ldexeflags -Wl,--image-base,0x140000000
4886             append SHFLAGS -Wl,--image-base,0x180000000
4887         fi
4888         ;;
4889     win32|win64)
4890         disable symver
4891         if enabled shared; then
4892             # Link to the import library instead of the normal static library
4893             # for shared libs.
4894             LD_LIB='%.lib'
4895             # Cannot build both shared and static libs with MSVC or icl.
4896             disable static
4897         fi
4898         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4899         shlibdir_default="$bindir_default"
4900         SLIBPREF=""
4901         SLIBSUF=".dll"
4902         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4903         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4904         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4905         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4906         SLIB_INSTALL_LINKS=
4907         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4908         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4909         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4910         objformat="win32"
4911         ranlib=:
4912         enable dos_paths
4913         ;;
4914     cygwin*)
4915         target_os=cygwin
4916         shlibdir_default="$bindir_default"
4917         SLIBPREF="cyg"
4918         SLIBSUF=".dll"
4919         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4920         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4921         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4922         SLIB_INSTALL_LINKS=
4923         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4924         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4925         objformat="win32"
4926         enable dos_paths
4927         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4928         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4929         ;;
4930     *-dos|freedos|opendos)
4931         network_extralibs="-lsocket"
4932         objformat="coff"
4933         enable dos_paths
4934         add_cppflags -U__STRICT_ANSI__
4935         ;;
4936     linux)
4937         enable dv1394
4938         enable section_data_rel_ro
4939         ;;
4940     irix*)
4941         target_os=irix
4942         ranlib="echo ignoring ranlib"
4943         ;;
4944     os/2*)
4945         strip="lxlite -CS"
4946         objformat="aout"
4947         add_cppflags -D_GNU_SOURCE
4948         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4949         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4950         LIBSUF="_s.a"
4951         SLIBPREF=""
4952         SLIBSUF=".dll"
4953         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4954         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4955         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
4956             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
4957             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
4958             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
4959             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
4960         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
4961             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
4962         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4963         SLIB_INSTALL_LINKS=
4964         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
4965         enable dos_paths
4966         enable_weak os2threads
4967         ;;
4968     gnu/kfreebsd)
4969         add_cppflags -D_BSD_SOURCE
4970         ;;
4971     gnu)
4972         ;;
4973     qnx)
4974         add_cppflags -D_QNX_SOURCE
4975         network_extralibs="-lsocket"
4976         ;;
4977     symbian)
4978         SLIBSUF=".dll"
4979         enable dos_paths
4980         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4981         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4982         add_ldflags -Wl,--target1-abs,--no-undefined \
4983                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4984                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4985         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4986                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4987                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4988         ;;
4989     osf1)
4990         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4991         ;;
4992     minix)
4993         ;;
4994     none)
4995         ;;
4996     *)
4997         die "Unknown OS '$target_os'."
4998         ;;
4999 esac
5000
5001 # test if creating links works
5002 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5003 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5004 mkdir "$link_dest"
5005 $ln_s "$link_dest" "$link_name"
5006 touch "$link_dest/test_file"
5007 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5008     # create link to source path
5009     [ -e src ] && rm src
5010     $ln_s "$source_path" src
5011     source_link=src
5012 else
5013     # creating directory links doesn't work
5014     # fall back to using the full source path
5015     source_link="$source_path"
5016 fi
5017 # cleanup
5018 rm -r "$link_dest"
5019 rm -r "$link_name"
5020
5021 # determine libc flavour
5022
5023 probe_libc(){
5024     pfx=$1
5025     pfx_no_=${pfx%_}
5026     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5027     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5028         eval ${pfx}libc_type=uclibc
5029         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5030     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5031         eval ${pfx}libc_type=glibc
5032         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5033     # MinGW headers can be installed on Cygwin, so check for newlib first.
5034     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5035         eval ${pfx}libc_type=newlib
5036         add_${pfx}cppflags -U__STRICT_ANSI__
5037     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5038     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5039         eval ${pfx}libc_type=mingw64
5040         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5041             add_compat msvcrt/snprintf.o
5042             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5043         fi
5044         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5045         eval test \$${pfx_no_}cc_type = "gcc" &&
5046             add_${pfx}cppflags -D__printf__=__gnu_printf__
5047     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5048          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5049         eval ${pfx}libc_type=mingw32
5050         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5051             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5052             die "ERROR: MinGW32 runtime version must be >= 3.15."
5053         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5054         check_${pfx}cpp_condition _mingw.h "defined(_WIN32_WINNT) && _WIN32_WINNT >= 0x0502" ||
5055             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
5056         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700__" &&
5057             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5058         eval test \$${pfx_no_}cc_type = "gcc" &&
5059             add_${pfx}cppflags -D__printf__=__gnu_printf__
5060     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5061         eval ${pfx}libc_type=msvcrt
5062         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5063             if [ "$pfx" = host_ ]; then
5064                 add_host_cppflags -Dsnprintf=_snprintf
5065             else
5066                 add_compat strtod.o strtod=avpriv_strtod
5067                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5068                                              _snprintf=avpriv_snprintf  \
5069                                              vsnprintf=avpriv_vsnprintf
5070             fi
5071         fi
5072         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5073         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5074         # 0x601 by default unless something else is set by the user.
5075         # This can easily lead to us detecting functions only present
5076         # in such new versions and producing binaries requiring windows 7.0.
5077         # Therefore explicitly set the default to XP unless the user has
5078         # set something else on the command line.
5079         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5080         # family. For these cases, configure is free to use any functions
5081         # found in the SDK headers by default. (Alternatively, we could force
5082         # _WIN32_WINNT to 0x0602 in that case.)
5083         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5084             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
5085 #ifdef WINAPI_FAMILY
5086 #include <winapifamily.h>
5087 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5088 #error not desktop
5089 #endif
5090 #endif
5091 EOF
5092         if [ "$pfx" = "" ]; then
5093             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5094             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5095         fi
5096     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5097         eval ${pfx}libc_type=klibc
5098     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5099         eval ${pfx}libc_type=bionic
5100     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5101         eval ${pfx}libc_type=solaris
5102         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5103     fi
5104     check_${pfx}cc <<EOF
5105 #include <time.h>
5106 void *v = localtime_r;
5107 EOF
5108 test "$?" != 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
5109 #include <time.h>
5110 void *v = localtime_r;
5111 EOF
5112
5113 }
5114
5115 probe_libc
5116 test -n "$libc_type" && enable libc_$libc_type
5117 probe_libc host_
5118 test -n "$host_libc_type" && enable host_libc_$host_libc_type
5119
5120 case $libc_type in
5121     bionic)
5122         add_compat strtod.o strtod=avpriv_strtod
5123         ;;
5124 esac
5125
5126 # hacks for compiler/libc/os combinations
5127
5128 if enabled_all tms470 libc_glibc; then
5129     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
5130     add_cppflags -D__USER_LABEL_PREFIX__=
5131     add_cppflags -D__builtin_memset=memset
5132     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
5133     add_cflags   -pds=48    # incompatible redefinition of macro
5134 fi
5135
5136 if enabled_all ccc libc_glibc; then
5137     add_ldflags -Wl,-z,now  # calls to libots crash without this
5138 fi
5139
5140 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5141     add_cppflags '-I\$(SRC_PATH)/compat/float'
5142
5143 esc(){
5144     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
5145 }
5146
5147 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
5148
5149 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5150
5151 set_default libdir
5152 : ${shlibdir_default:="$libdir"}
5153 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5154
5155 set_default $PATHS_LIST
5156 set_default nm
5157
5158 # we need to build at least one lib type
5159 if ! enabled_any static shared; then
5160     cat <<EOF
5161 At least one library type must be built.
5162 Specify --enable-static to build the static libraries or --enable-shared to
5163 build the shared libraries as well. To only build the shared libraries specify
5164 --disable-static in addition to --enable-shared.
5165 EOF
5166     exit 1
5167 fi
5168
5169 disabled optimizations || check_cflags -fomit-frame-pointer
5170
5171 enable_weak_pic() {
5172     disabled pic && return
5173     enable pic
5174     add_cppflags -DPIC
5175     case "$target_os" in
5176     mingw*|cygwin*)
5177         ;;
5178     *)
5179         add_cflags -fPIC
5180         ;;
5181     esac
5182     add_asflags  -fPIC
5183 }
5184
5185 enabled pic && enable_weak_pic
5186
5187 check_cc <<EOF || die "Symbol mangling check failed."
5188 int ff_extern;
5189 EOF
5190 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5191 extern_prefix=${sym%%ff_extern*}
5192
5193 check_cc <<EOF && enable_weak inline_asm
5194 void foo(void) { __asm__ volatile ("" ::); }
5195 EOF
5196
5197 _restrict=
5198 for restrict_keyword in restrict __restrict__ __restrict; do
5199     check_cc <<EOF && _restrict=$restrict_keyword && break
5200 void foo(char * $restrict_keyword p);
5201 EOF
5202 done
5203
5204 check_cc <<EOF && enable pragma_deprecated
5205 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
5206 EOF
5207
5208 check_cc <<EOF && enable attribute_packed
5209 struct { int x; } __attribute__((packed)) x;
5210 EOF
5211
5212 check_cc <<EOF && enable attribute_may_alias
5213 union { int x; } __attribute__((may_alias)) x;
5214 EOF
5215
5216 check_cc <<EOF || die "endian test failed"
5217 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5218 EOF
5219 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5220
5221 if ! enabled ppc64 || enabled bigendian; then
5222     disable vsx
5223 fi
5224
5225 check_gas() {
5226     log "check_gas using '$as' as AS"
5227     # :vararg is used on aarch64, arm and ppc altivec
5228     check_as <<EOF || return 1
5229 .macro m n, y:vararg=0
5230 \n: .int \y
5231 .endm
5232 m x
5233 EOF
5234     # .altmacro is only used in arm asm
5235     ! enabled arm || check_as <<EOF || return 1
5236 .altmacro
5237 EOF
5238     enable gnu_as
5239     return 0
5240 }
5241
5242 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5243     nogas=:
5244     enabled_any arm aarch64 && nogas=die
5245     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5246     as_noop=-v
5247
5248     case $as_type in
5249         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5250         gcc)  gaspp_as_type=gas ;;
5251         *)    gaspp_as_type=$as_type ;;
5252     esac
5253
5254     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5255
5256     test "${as#*gas-preprocessor.pl}" != "$as" ||
5257     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5258         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5259
5260     if ! check_gas ; then
5261         as=${gas:=$as}
5262         check_gas || \
5263             $nogas "GNU assembler not found, install/update gas-preprocessor"
5264     fi
5265
5266     check_as <<EOF && enable as_func
5267 .func test
5268 .endfunc
5269 EOF
5270 fi
5271
5272 check_inline_asm inline_asm_labels '"1:\n"'
5273
5274 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5275
5276 if enabled aarch64; then
5277     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5278     # internal assembler in clang 3.3 does not support this instruction
5279     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5280     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5281
5282     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5283
5284 elif enabled alpha; then
5285
5286     check_cflags -mieee
5287
5288 elif enabled arm; then
5289
5290     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
5291
5292     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
5293 float func(float a, float b){ return a+b; }
5294 EOF
5295
5296     enabled thumb && check_cflags -mthumb || check_cflags -marm
5297
5298     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
5299         enable vfp_args
5300     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5301         enable vfp_args
5302     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5303         case "${cross_prefix:-$cc}" in
5304             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
5305             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
5306 __asm__ (".eabi_attribute 28, 1");
5307 int main(void) { return 0; }
5308 EOF
5309         esac
5310         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5311     fi
5312
5313     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5314     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5315     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5316     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5317     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5318     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5319     enabled setend  && check_insn setend  'setend be'
5320
5321     [ $target_os = linux ] || [ $target_os = android ] ||
5322         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5323             $ARCH_EXT_LIST_ARM
5324
5325     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5326
5327     check_as <<EOF && enable as_dn_directive
5328 ra .dn d0.i16
5329 .unreq ra
5330 EOF
5331     check_as <<EOF && enable as_fpu_directive
5332 .fpu neon
5333 EOF
5334
5335     # llvm's integrated assembler supports .object_arch from llvm 3.5
5336     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
5337 .object_arch armv4
5338 EOF
5339
5340     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5341
5342 elif enabled mips; then
5343
5344     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5345     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5346     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5347
5348     # Enable minimum ISA based on selected options
5349     if enabled mips64; then
5350         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5351         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5352         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5353     else
5354         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5355         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5356         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5357         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5358     fi
5359
5360     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5361     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5362     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
5363     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5364     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5365
5366 elif enabled parisc; then
5367
5368     if enabled gcc; then
5369         case $($cc -dumpversion) in
5370             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5371         esac
5372     fi
5373
5374 elif enabled ppc; then
5375
5376     enable local_aligned_8 local_aligned_16 local_aligned_32
5377
5378     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5379     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5380     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5381     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5382
5383     # AltiVec flags: The FSF version of GCC differs from the Apple version
5384     if enabled altivec; then
5385         check_cflags -maltivec -mabi=altivec &&
5386         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
5387         check_cflags -faltivec
5388
5389         # check if our compiler supports Motorola AltiVec C API
5390         check_cc <<EOF || disable altivec
5391 $inc_altivec_h
5392 int main(void) {
5393     vector signed int v1 = (vector signed int) { 0 };
5394     vector signed int v2 = (vector signed int) { 1 };
5395     v1 = vec_add(v1, v2);
5396     return 0;
5397 }
5398 EOF
5399
5400         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5401     fi
5402
5403     if enabled vsx; then
5404         check_cflags -mvsx &&
5405         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
5406     fi
5407
5408     if enabled power8; then
5409         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
5410     fi
5411
5412 elif enabled x86; then
5413
5414     check_builtin rdtsc    intrin.h   "__rdtsc()"
5415     check_builtin mm_empty mmintrin.h "_mm_empty()"
5416
5417     enable local_aligned_8 local_aligned_16 local_aligned_32
5418
5419     # check whether EBP is available on x86
5420     # As 'i' is stored on the stack, this program will crash
5421     # if the base pointer is used to access it because the
5422     # base pointer is cleared in the inline assembly code.
5423     check_exec_crash <<EOF && enable ebp_available
5424 volatile int i=0;
5425 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5426 return i;
5427 EOF
5428
5429     # check whether EBX is available on x86
5430     check_inline_asm ebx_available '""::"b"(0)' &&
5431         check_inline_asm ebx_available '"":::"%ebx"'
5432
5433     # check whether xmm clobbers are supported
5434     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5435
5436     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5437         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5438
5439     # check whether binutils is new enough to compile SSSE3/MMXEXT
5440     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5441     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5442
5443     if ! disabled_any asm mmx yasm; then
5444         if check_cmd $yasmexe --version; then
5445             enabled x86_64 && yasm_extra="-m amd64"
5446             yasm_debug="-g dwarf2"
5447         elif check_cmd nasm -v; then
5448             yasmexe=nasm
5449             yasm_debug="-g -F dwarf"
5450             if enabled x86_64; then
5451                 case "$objformat" in
5452                     elf)   objformat=elf64 ;;
5453                     win32) objformat=win64 ;;
5454                 esac
5455             fi
5456         fi
5457
5458         YASMFLAGS="-f $objformat $yasm_extra"
5459         enabled pic               && append YASMFLAGS "-DPIC"
5460         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
5461         case "$objformat" in
5462             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
5463         esac
5464
5465         check_yasm "movbe ecx, [5]" && enable yasm ||
5466             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
5467         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
5468         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
5469         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
5470         check_yasm "CPU amdnop" || disable cpunop
5471     fi
5472
5473     case "$cpu" in
5474         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5475             disable fast_clz
5476         ;;
5477     esac
5478
5479 fi
5480
5481 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
5482
5483 check_ldflags -Wl,--as-needed
5484 check_ldflags -Wl,-z,noexecstack
5485
5486 if check_func dlopen && check_func dlsym; then
5487     ldl=
5488 elif check_func dlopen -ldl && check_func dlsym -ldl; then
5489     ldl=-ldl
5490 fi
5491
5492 avisynth_demuxer_extralibs='$ldl'
5493 cuda_extralibs='$ldl'
5494 decklink_outdev_extralibs="$decklink_outdev_extralibs $ldl"
5495 decklink_indev_extralibs="$decklink_indev_extralibs $ldl"
5496 frei0r_filter_extralibs='$ldl'
5497 frei0r_src_filter_extralibs='$ldl'
5498 ladspa_filter_extralibs='$ldl'
5499 nvenc_extralibs='$ldl'
5500 coreimage_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5501 coreimagesrc_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5502
5503 if ! disabled network; then
5504     check_func getaddrinfo $network_extralibs
5505     check_func inet_aton $network_extralibs
5506
5507     check_type netdb.h "struct addrinfo"
5508     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5509     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5510     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5511     check_type poll.h "struct pollfd"
5512     check_type netinet/sctp.h "struct sctp_event_subscribe"
5513     check_struct "sys/socket.h" "struct msghdr" msg_flags
5514     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5515     check_type netinet/in.h "struct sockaddr_in6"
5516     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5517     check_type "sys/types.h sys/socket.h" socklen_t
5518
5519     # Prefer arpa/inet.h over winsock2
5520     if check_header arpa/inet.h ; then
5521         check_func closesocket
5522     elif check_header winsock2.h ; then
5523         check_func_headers winsock2.h closesocket -lws2 &&
5524             network_extralibs="-lws2" ||
5525         { check_func_headers winsock2.h closesocket -lws2_32 &&
5526             network_extralibs="-lws2_32"; } || disable winsock2_h network
5527         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5528
5529         check_type ws2tcpip.h socklen_t
5530         check_type ws2tcpip.h "struct addrinfo"
5531         check_type ws2tcpip.h "struct group_source_req"
5532         check_type ws2tcpip.h "struct ip_mreq_source"
5533         check_type ws2tcpip.h "struct ipv6_mreq"
5534         check_type winsock2.h "struct pollfd"
5535         check_struct winsock2.h "struct sockaddr" sa_len
5536         check_type ws2tcpip.h "struct sockaddr_in6"
5537         check_type ws2tcpip.h "struct sockaddr_storage"
5538     else
5539         disable network
5540     fi
5541 fi
5542
5543 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5544 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5545 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5546 check_builtin sarestart signal.h "SA_RESTART"
5547 check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" -lpthread
5548 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5549 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5550 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5551 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5552
5553 case "$custom_allocator" in
5554     jemalloc)
5555         # jemalloc by default does not use a prefix
5556         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5557     ;;
5558     tcmalloc)
5559         require_pkg_config libtcmalloc gperftools/tcmalloc.h tc_malloc
5560         malloc_prefix=tc_
5561     ;;
5562 esac
5563
5564 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5565 check_func  ${malloc_prefix}memalign            && enable memalign
5566 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5567
5568 check_func  access
5569 check_func_headers stdlib.h arc4random
5570 check_func_headers time.h clock_gettime ||
5571     { check_lib time.h clock_gettime -lrt && LIBRT="-lrt"; }
5572 check_func  fcntl
5573 check_func  fork
5574 check_func  gethrtime
5575 check_func  getopt
5576 check_func  getrusage
5577 check_func  gettimeofday
5578 check_func  isatty
5579 check_func  mach_absolute_time
5580 check_func  mkstemp
5581 check_func  mmap
5582 check_func  mprotect
5583 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5584 check_func_headers time.h nanosleep ||
5585     { check_lib time.h nanosleep -lrt && LIBRT="-lrt"; }
5586 check_func  sched_getaffinity
5587 check_func  setrlimit
5588 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5589 check_func  strerror_r
5590 check_func  sysconf
5591 check_func  sysctl
5592 check_func  usleep
5593
5594 check_func_headers conio.h kbhit
5595 check_func_headers io.h setmode
5596 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5597 check_func_headers stdlib.h getenv
5598 check_func_headers sys/stat.h lstat
5599
5600 check_func_headers windows.h CoTaskMemFree -lole32
5601 check_func_headers windows.h GetProcessAffinityMask
5602 check_func_headers windows.h GetProcessTimes
5603 check_func_headers windows.h GetSystemTimeAsFileTime
5604 check_func_headers windows.h LoadLibrary
5605 check_func_headers windows.h MapViewOfFile
5606 check_func_headers windows.h PeekNamedPipe
5607 check_func_headers windows.h SetConsoleTextAttribute
5608 check_func_headers windows.h SetConsoleCtrlHandler
5609 check_func_headers windows.h Sleep
5610 check_func_headers windows.h VirtualAlloc
5611 check_struct windows.h "CONDITION_VARIABLE" Ptr
5612 check_func_headers glob.h glob
5613 enabled xlib &&
5614     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5615
5616 check_header AudioToolbox/AudioToolbox.h
5617 check_header direct.h
5618 check_header dirent.h
5619 check_header dlfcn.h
5620 check_header d3d11.h
5621 check_header dxva.h
5622 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5623 check_header io.h
5624 check_header libcrystalhd/libcrystalhd_if.h
5625 check_header mach/mach_time.h
5626 check_header malloc.h
5627 check_header net/udplite.h
5628 check_header poll.h
5629 check_header sys/mman.h
5630 check_header sys/param.h
5631 check_header sys/resource.h
5632 check_header sys/select.h
5633 check_header sys/time.h
5634 check_header sys/un.h
5635 check_header termios.h
5636 check_header unistd.h
5637 check_header valgrind/valgrind.h
5638 check_header vdpau/vdpau.h
5639 check_header vdpau/vdpau_x11.h
5640 check_header VideoDecodeAcceleration/VDADecoder.h
5641 check_header VideoToolbox/VideoToolbox.h
5642 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5643 enabled videotoolbox && check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferColorPrimaries_ITU_R_2020 -framework CoreVideo
5644 check_header windows.h
5645 check_header X11/extensions/XvMClib.h
5646 check_header asm/types.h
5647
5648 # it seems there are versions of clang in some distros that try to use the
5649 # gcc headers, which explodes for stdatomic
5650 # so we also check that atomics actually work here
5651 check_builtin stdatomic_h stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0)"
5652
5653 check_lib "windows.h shellapi.h" CommandLineToArgvW   -lshell32
5654 check_lib "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
5655 check_lib "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
5656
5657 check_lib "CoreServices/CoreServices.h" UTGetOSTypeFromString "-framework CoreServices"
5658
5659 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5660
5661 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5662 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5663 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5664 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5665 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5666
5667 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
5668 check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
5669 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
5670 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
5671 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5672 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5673 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
5674 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
5675
5676 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5677
5678 check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt
5679
5680 if ! disabled w32threads && ! enabled pthreads; then
5681     check_func_headers "windows.h process.h" _beginthreadex &&
5682         enable w32threads || disable w32threads
5683     if ! enabled w32threads && enabled winrt; then
5684         check_func_headers "windows.h" CreateThread &&
5685             enable w32threads || disable w32threads
5686     fi
5687 fi
5688
5689 # check for some common methods of building with pthread support
5690 # do this before the optional library checks as some of them require pthreads
5691 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5692     enable pthreads
5693     if check_func pthread_join -pthread && check_func pthread_create -pthread; then
5694         add_cflags -pthread
5695         add_extralibs -pthread
5696     elif check_func pthread_join -pthreads && check_func pthread_create -pthreads; then
5697         add_cflags -pthreads
5698         add_extralibs -pthreads
5699     elif check_func pthread_join -ldl -pthread && check_func pthread_create -ldl -pthread; then
5700         add_cflags -ldl -pthread
5701         add_extralibs -ldl -pthread
5702     elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
5703         add_extralibs -lpthreadGC2
5704     elif check_lib pthread.h pthread_join -lpthread && check_lib pthread.h pthread_create -lpthread; then
5705         :
5706     elif ! check_func pthread_join && ! check_func pthread_create; then
5707         disable pthreads
5708     fi
5709     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5710 fi
5711
5712
5713 if enabled pthreads; then
5714   check_func pthread_cancel
5715 fi
5716
5717 enabled pthreads &&
5718     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)"
5719
5720 disabled  zlib || check_lib  zlib.h      zlibVersion    -lz    || disable  zlib
5721 disabled bzlib || check_lib bzlib.h BZ2_bzlibVersion    -lbz2  || disable bzlib
5722 disabled  lzma || check_lib  lzma.h lzma_version_number -llzma || disable lzma
5723
5724 check_lib math.h sin -lm && LIBM="-lm"
5725 disabled crystalhd || check_lib "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd || disable crystalhd
5726
5727 atan2f_args=2
5728 copysign_args=2
5729 hypot_args=2
5730 ldexpf_args=2
5731 powf_args=2
5732
5733 for func in $MATH_FUNCS; do
5734     eval check_mathfunc $func \${${func}_args:-1} $LIBM
5735 done
5736
5737 for func in $COMPLEX_FUNCS; do
5738     eval check_complexfunc $func \${${func}_args:-1}
5739 done
5740
5741 # these are off by default, so fail if requested and not available
5742 enabled avfoundation_indev && { check_header_objcc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
5743 enabled avfoundation_indev && { check_lib CoreGraphics/CoreGraphics.h CGGetActiveDisplayList -framework CoreGraphics ||
5744                                 check_lib ApplicationServices/ApplicationServices.h CGGetActiveDisplayList -framework ApplicationServices; }
5745 enabled cuda              && check_header cuda.h # this is not a dependency
5746 enabled cuvid             && { enabled cuda ||
5747                                die "ERROR: CUVID requires CUDA"; }
5748 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5749 enabled coreimage_filter  && { check_header_objcc QuartzCore/CoreImage.h || disable coreimage_filter; }
5750 enabled coreimagesrc_filter && { check_header_objcc QuartzCore/CoreImage.h || disable coreimagesrc_filter; }
5751 enabled decklink          && { { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; } &&
5752                                { check_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a060100" || die "ERROR: Decklink API version must be >= 10.6.1."; } }
5753 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
5754 enabled gmp               && require gmp gmp.h mpz_export -lgmp
5755 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
5756 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads &&
5757                                check_lib "dlfcn.h" dlopen -ldl || die "ERROR: jni not found"; }
5758 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
5759 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5760 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
5761 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
5762 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
5763 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5764                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
5765                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5766 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
5767 enabled libdc1394         && require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new
5768 enabled libfdk_aac        && { use_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5769                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5770                                  warn "using libfdk without pkg-config"; } }
5771 flite_libs="-lflite_cmu_time_awb -lflite_cmu_us_awb -lflite_cmu_us_kal -lflite_cmu_us_kal16 -lflite_cmu_us_rms -lflite_cmu_us_slt -lflite_usenglish -lflite_cmulex -lflite"
5772 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_libs
5773 enabled fontconfig        && enable libfontconfig
5774 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
5775 enabled libfreetype       && require_libfreetype
5776 enabled libfribidi        && require_pkg_config fribidi fribidi.h fribidi_version_info
5777 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
5778 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5779                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
5780                                done || die "ERROR: libgsm not found"; }
5781 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
5782 enabled libkvazaar        && require_pkg_config "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
5783 enabled libmfx            && require_pkg_config libmfx "mfx/mfxvideo.h" MFXInit
5784 enabled libmodplug        && require_pkg_config libmodplug libmodplug/modplug.h ModPlug_Load
5785 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5786 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
5787 enabled libnpp            && require libnpp npp.h nppGetLibVersion -lnppi -lnppc
5788 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5789 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5790 enabled libopencv         && { check_header opencv2/core/core_c.h &&
5791                                { use_pkg_config opencv opencv2/core/core_c.h cvCreateImageHeader ||
5792                                  require opencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
5793                                require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader; }
5794 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
5795 enabled libopenjpeg       && { { check_lib openjpeg-2.1/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5796                                check_lib openjpeg-2.1/openjpeg.h opj_version -lopenjp2 ||
5797                                { check_lib openjpeg-2.0/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5798                                { check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5799                                { check_lib openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5800                                die "ERROR: libopenjpeg not found"; }
5801 enabled libopenmpt        && require_pkg_config "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create
5802 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
5803 enabled libpulse          && require_pkg_config libpulse pulse/pulseaudio.h pa_context_new
5804 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
5805 enabled librubberband     && require_pkg_config "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new
5806 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
5807 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
5808 enabled libsmbclient      && { use_pkg_config smbclient libsmbclient.h smbc_init ||
5809                                require smbclient libsmbclient.h smbc_init -lsmbclient; }
5810 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy
5811 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr && LIBSOXR="-lsoxr"
5812 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
5813 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
5814 enabled libtesseract      && require_pkg_config tesseract tesseract/capi.h TessBaseAPICreate
5815 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
5816 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
5817                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
5818                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
5819 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
5820 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
5821 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
5822 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
5823
5824 enabled libvpx            && {
5825     enabled libvpx_vp8_decoder && {
5826         use_pkg_config "vpx >= 0.9.1" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
5827             check_lib "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
5828                 die "ERROR: libvpx decoder version must be >=0.9.1";
5829     }
5830     enabled libvpx_vp8_encoder && {
5831         use_pkg_config "vpx >= 0.9.7" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
5832             check_lib "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
5833                 die "ERROR: libvpx encoder version must be >=0.9.7";
5834     }
5835     enabled libvpx_vp9_decoder && {
5836         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
5837             check_lib "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx ||
5838                 disable libvpx_vp9_decoder;
5839     }
5840     enabled libvpx_vp9_encoder && {
5841         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
5842             check_lib "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx ||
5843                 disable libvpx_vp9_encoder;
5844     }
5845     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
5846         die "libvpx enabled but no supported decoders found"
5847     fi
5848 }
5849
5850 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
5851 enabled libwebp           && {
5852     enabled libwebp_encoder      && require_pkg_config "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
5853     enabled libwebp_anim_encoder && { use_pkg_config "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit || disable libwebp_anim_encoder; } }
5854 enabled libx264           && { use_pkg_config x264 "stdint.h x264.h" x264_encoder_encode ||
5855                                { require libx264 "stdint.h x264.h" x264_encoder_encode -lx264 &&
5856                                  warn "using libx264 without pkg-config"; } } &&
5857                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
5858                                die "ERROR: libx264 must be installed and version must be >= 0.118."; } &&
5859                              { check_cpp_condition x264.h "X264_MPEG2" &&
5860                                enable libx262; }
5861 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
5862                              { check_cpp_condition x265.h "X265_BUILD >= 68" ||
5863                                die "ERROR: libx265 version must be >= 68."; }
5864 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode -lxavs
5865 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
5866 enabled libzimg           && require_pkg_config "zimg >= 2.3.0" zimg.h zimg_get_api_version
5867 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
5868 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi &&
5869                              { check_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
5870                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
5871 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
5872 enabled mmal              && { check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
5873                                { ! enabled cross_compile &&
5874                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
5875                                  add_ldflags -L/opt/vc/lib/ &&
5876                                  check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
5877                                die "ERROR: mmal not found" &&
5878                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
5879 enabled netcdf            && require_pkg_config netcdf netcdf.h nc_inq_libvers
5880 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
5881                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
5882                                die "ERROR: openal not found"; } &&
5883                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
5884                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
5885 enabled opencl            && { check_lib OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
5886                                check_lib CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
5887                                die "ERROR: opencl not found"; } &&
5888                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
5889                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
5890                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
5891 enabled opengl            && { check_lib GL/glx.h glXGetProcAddress "-lGL" ||
5892                                check_lib windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
5893                                check_lib OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
5894                                check_lib ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
5895                                die "ERROR: opengl not found."
5896                              }
5897 enabled omx_rpi && enable omx
5898 enabled omx               && { check_header OMX_Core.h ||
5899                                 { ! enabled cross_compile && enabled omx_rpi && {
5900                                     add_cflags -isystem/opt/vc/include/IL ; }
5901                                 check_header OMX_Core.h ; } ||
5902                                die "ERROR: OpenMAX IL headers not found"; }
5903 enabled openssl           && { use_pkg_config openssl openssl/ssl.h OPENSSL_init_ssl ||
5904                                use_pkg_config openssl openssl/ssl.h SSL_library_init ||
5905                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
5906                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
5907                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
5908                                die "ERROR: openssl not found"; }
5909 enabled qtkit_indev      && { check_header_objcc QTKit/QTKit.h || disable qtkit_indev; }
5910
5911 if enabled gcrypt; then
5912     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
5913     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
5914         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
5915         gcrypt_libs=$("${GCRYPT_CONFIG}" --libs)
5916         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_libs ||
5917             die "ERROR: gcrypt not found"
5918         add_cflags $gcrypt_cflags && add_extralibs $gcrypt_libs
5919     else
5920         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
5921     fi
5922 fi
5923
5924 disabled sdl && disable sdl2
5925 if ! disabled sdl2; then
5926     SDL2_CONFIG="${cross_prefix}sdl2-config"
5927     if check_pkg_config sdl2 SDL_events.h SDL_PollEvent; then
5928         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
5929         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
5930         check_func SDL_Init $sdl2_libs $sdl2_cflags && enable sdl2
5931     else
5932       if "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
5933         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
5934         sdl2_libs=$("${SDL2_CONFIG}" --libs)
5935         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
5936         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
5937         check_func SDL_Init $sdl2_libs $sdl2_cflags && enable sdl2
5938       fi
5939     fi
5940     if test $target_os = "mingw32"; then
5941         sdl2_libs="$sdl2_libs -mconsole"
5942     fi
5943 fi
5944 enabled sdl2 && enable sdl && add_cflags $sdl2_cflags && add_extralibs $sdl2_libs
5945
5946 disabled securetransport || { check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5947     check_lib "Security/SecureTransport.h Security/Security.h" "SSLCreateContext SecItemImport" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5948     enable securetransport; }
5949
5950 disabled schannel || { check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
5951                        check_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" && enable schannel && add_extralibs -lsecur32; }
5952
5953 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
5954 enabled makeinfo \
5955     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
5956     && enable makeinfo_html || disable makeinfo_html
5957 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
5958 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
5959 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
5960 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
5961
5962 check_header linux/fb.h
5963 check_header linux/videodev.h
5964 check_header linux/videodev2.h
5965 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5966
5967 check_header sys/videoio.h
5968 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5969
5970 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
5971 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
5972 # w32api 3.12 had it defined wrong
5973 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
5974
5975 check_type "dshow.h" IBaseFilter
5976
5977 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
5978 { check_header dev/bktr/ioctl_meteor.h &&
5979   check_header dev/bktr/ioctl_bt848.h; } ||
5980 { check_header machine/ioctl_meteor.h &&
5981   check_header machine/ioctl_bt848.h; } ||
5982 { check_header dev/video/meteor/ioctl_meteor.h &&
5983   check_header dev/video/bktr/ioctl_bt848.h; } ||
5984 check_header dev/ic/bt8xx.h
5985
5986 check_header sndio.h
5987 if check_struct sys/soundcard.h audio_buf_info bytes; then
5988     enable_safe sys/soundcard.h
5989 else
5990     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
5991     #include <sys/soundcard.h>
5992     audio_buf_info abc;
5993 EOF
5994 fi
5995 check_header soundcard.h
5996
5997 enabled_any alsa_indev alsa_outdev &&
5998     check_lib alsa/asoundlib.h snd_pcm_htimestamp -lasound
5999
6000 enabled jack_indev && check_lib jack/jack.h jack_client_open -ljack &&
6001     check_func jack_port_get_latency_range -ljack
6002
6003 enabled_any sndio_indev sndio_outdev && check_lib sndio.h sio_open -lsndio
6004
6005 if enabled libcdio; then
6006     check_lib "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6007     check_lib "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6008     die "ERROR: No usable libcdio/cdparanoia found"
6009 fi
6010
6011 if ! disabled libxcb; then
6012     check_pkg_config "xcb >= 1.4" xcb/xcb.h xcb_connect || {
6013         enabled libxcb && die "ERROR: libxcb >= 1.4 not found";
6014     } && enable libxcb
6015
6016 if enabled libxcb; then
6017     disabled libxcb_shm || {
6018         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
6019             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
6020         } && check_header sys/shm.h && enable libxcb_shm; }
6021
6022     disabled libxcb_xfixes || {
6023         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
6024             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
6025         } && enable libxcb_xfixes; }
6026
6027     disabled libxcb_shape || {
6028         check_pkg_config xcb-shape xcb/shape.h xcb_shape_get_rectangles || {
6029             enabled libxcb_shape && die "ERROR: libxcb_shape not found";
6030         } && enable libxcb_shape; }
6031
6032     add_cflags $xcb_cflags $xcb_shm_cflags $xcb_xfixes_cflags $xcb_shape_cflags
6033     add_extralibs $xcb_libs $xcb_shm_libs $xcb_xfixes_libs $xcb_shape_libs
6034 fi
6035 fi
6036
6037 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6038
6039 enabled dxva2api_h &&
6040     check_cc <<EOF && enable dxva2api_cobj
6041 #define _WIN32_WINNT 0x0600
6042 #define COBJMACROS
6043 #include <windows.h>
6044 #include <d3d9.h>
6045 #include <dxva2api.h>
6046 int main(void) { IDirectXVideoDecoder *o = NULL; IDirectXVideoDecoder_Release(o); return 0; }
6047 EOF
6048
6049 enabled vaapi &&
6050     check_lib va/va.h vaInitialize -lva ||
6051     disable vaapi
6052
6053 enabled vaapi &&
6054     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
6055     disable vaapi
6056
6057 enabled vaapi &&
6058     check_lib "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm &&
6059     enable vaapi_drm
6060
6061 enabled vaapi &&
6062     check_lib "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 -lX11 &&
6063     enable vaapi_x11
6064
6065 enabled vdpau &&
6066     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
6067     disable vdpau
6068
6069 enabled vdpau &&
6070     check_lib "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11 &&
6071     enable vdpau_x11
6072
6073 if enabled x86; then
6074     case $target_os in
6075         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6076             ;;
6077         *)
6078             disable cuda cuvid nvenc
6079             ;;
6080     esac
6081 else
6082     disable cuda cuvid nvenc
6083 fi
6084
6085 enabled nvenc &&
6086     check_cc -I$source_path <<EOF || disable nvenc
6087 #include "compat/nvenc/nvEncodeAPI.h"
6088 NV_ENCODE_API_FUNCTION_LIST flist;
6089 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6090 int main(void) { return 0; }
6091 EOF
6092
6093 # Funny iconv installations are not unusual, so check it after all flags have been set
6094 disabled iconv || check_func_headers iconv.h iconv || check_lib iconv.h iconv -liconv || disable iconv
6095
6096 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6097
6098 # add some useful compiler flags if supported
6099 check_cflags -Wdeclaration-after-statement
6100 check_cflags -Wall
6101 check_cflags -Wdisabled-optimization
6102 check_cflags -Wpointer-arith
6103 check_cflags -Wredundant-decls
6104 check_cflags -Wwrite-strings
6105 check_cflags -Wtype-limits
6106 check_cflags -Wundef
6107 check_cflags -Wmissing-prototypes
6108 check_cflags -Wno-pointer-to-int-cast
6109 check_cflags -Wstrict-prototypes
6110 check_cflags -Wempty-body
6111
6112 if enabled extra_warnings; then
6113     check_cflags -Wcast-qual
6114     check_cflags -Wextra
6115     check_cflags -Wpedantic
6116 fi
6117
6118 check_disable_warning(){
6119     warning_flag=-W${1#-Wno-}
6120     test_cflags $warning_flag && add_cflags $1
6121 }
6122
6123 check_disable_warning -Wno-parentheses
6124 check_disable_warning -Wno-switch
6125 check_disable_warning -Wno-format-zero-length
6126 check_disable_warning -Wno-pointer-sign
6127 check_disable_warning -Wno-unused-const-variable
6128
6129 check_disable_warning_headers(){
6130     warning_flag=-W${1#-Wno-}
6131     test_cflags $warning_flag && append cflags_headers $1
6132 }
6133
6134 check_disable_warning_headers -Wno-deprecated-declarations
6135 check_disable_warning_headers -Wno-unused-variable
6136
6137 # add some linker flags
6138 check_ldflags -Wl,--warn-common
6139 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6140 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
6141 enabled rpath && add_ldlibflags -Wl,-rpath,$libdir
6142 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6143
6144 # add some strip flags
6145 # -wN '..@*' is more selective than -x, but not available everywhere.
6146 check_stripflags -wN \'..@*\' || check_stripflags -x
6147
6148 enabled neon_clobber_test &&
6149     check_ldflags -Wl,--wrap,avcodec_open2              \
6150                   -Wl,--wrap,avcodec_decode_audio4      \
6151                   -Wl,--wrap,avcodec_decode_video2      \
6152                   -Wl,--wrap,avcodec_decode_subtitle2   \
6153                   -Wl,--wrap,avcodec_encode_audio2      \
6154                   -Wl,--wrap,avcodec_encode_video2      \
6155                   -Wl,--wrap,avcodec_encode_subtitle    \
6156                   -Wl,--wrap,avcodec_send_packet        \
6157                   -Wl,--wrap,avcodec_receive_packet     \
6158                   -Wl,--wrap,avcodec_send_frame         \
6159                   -Wl,--wrap,avcodec_receive_frame      \
6160                   -Wl,--wrap,swr_convert                \
6161                   -Wl,--wrap,avresample_convert ||
6162     disable neon_clobber_test
6163
6164 enabled xmm_clobber_test &&
6165     check_ldflags -Wl,--wrap,avcodec_open2              \
6166                   -Wl,--wrap,avcodec_decode_audio4      \
6167                   -Wl,--wrap,avcodec_decode_video2      \
6168                   -Wl,--wrap,avcodec_decode_subtitle2   \
6169                   -Wl,--wrap,avcodec_encode_audio2      \
6170                   -Wl,--wrap,avcodec_encode_video2      \
6171                   -Wl,--wrap,avcodec_encode_subtitle    \
6172                   -Wl,--wrap,avcodec_send_packet        \
6173                   -Wl,--wrap,avcodec_receive_packet     \
6174                   -Wl,--wrap,avcodec_send_frame         \
6175                   -Wl,--wrap,avcodec_receive_frame      \
6176                   -Wl,--wrap,swr_convert                \
6177                   -Wl,--wrap,avresample_convert         \
6178                   -Wl,--wrap,sws_scale ||
6179     disable xmm_clobber_test
6180
6181 check_ld "cc" <<EOF && enable proper_dce
6182 extern const int array[512];
6183 static inline int func(void) { return array[0]; }
6184 int main(void) { return 0; }
6185 EOF
6186
6187 if enabled proper_dce; then
6188     echo "X { local: *; };" > $TMPV
6189     if test_ldflags -Wl,${version_script},$TMPV; then
6190         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6191         check_cc <<EOF && enable symver_asm_label
6192 void ff_foo(void) __asm__ ("av_foo@VERSION");
6193 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6194 EOF
6195         check_cc <<EOF && enable symver_gnu_asm
6196 __asm__(".symver ff_foo,av_foo@VERSION");
6197 void ff_foo(void) {}
6198 EOF
6199     fi
6200 fi
6201
6202 if [ -z "$optflags" ]; then
6203     if enabled small; then
6204         optflags=$cflags_size
6205     elif enabled optimizations; then
6206         optflags=$cflags_speed
6207     else
6208         optflags=$cflags_noopt
6209     fi
6210 fi
6211
6212 check_optflags(){
6213     check_cflags "$@"
6214     enabled lto && check_ldflags "$@"
6215 }
6216
6217
6218 if enabled lto; then
6219     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6220     check_cflags  -flto
6221     check_ldflags -flto $cpuflags
6222     disable inline_asm_direct_symbol_refs
6223 fi
6224
6225 check_optflags $optflags
6226 check_optflags -fno-math-errno
6227 check_optflags -fno-signed-zeros
6228
6229 enabled ftrapv && check_cflags -ftrapv
6230
6231 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6232 int x;
6233 EOF
6234
6235
6236 if enabled icc; then
6237     # Just warnings, no remarks
6238     check_cflags -w1
6239     # -wd: Disable following warnings
6240     # 144, 167, 556: -Wno-pointer-sign
6241     # 188: enumerated type mixed with another type
6242     # 1292: attribute "foo" ignored
6243     # 1419: external declaration in primary source file
6244     # 10006: ignoring unknown option -fno-signed-zeros
6245     # 10148: ignoring unknown option -Wno-parentheses
6246     # 10156: ignoring option '-W'; no argument required
6247     # 13200: No EMMS instruction before call to function
6248     # 13203: No EMMS instruction before return from function
6249     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6250     # 11030: Warning unknown option --as-needed
6251     # 10156: ignoring option '-export'; no argument required
6252     check_ldflags -wd10156,11030
6253     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6254     enable ebp_available
6255     # The test above does not test linking
6256     enabled lto && disable symver_asm_label
6257     if enabled x86_32; then
6258         icc_version=$($cc -dumpversion)
6259         test ${icc_version%%.*} -ge 11 &&
6260             check_cflags -falign-stack=maintain-16-byte ||
6261             disable aligned_stack
6262     fi
6263 elif enabled ccc; then
6264     # disable some annoying warnings
6265     add_cflags -msg_disable bitnotint
6266     add_cflags -msg_disable mixfuncvoid
6267     add_cflags -msg_disable nonstandcast
6268     add_cflags -msg_disable unsupieee
6269 elif enabled gcc; then
6270     check_optflags -fno-tree-vectorize
6271     check_cflags -Werror=format-security
6272     check_cflags -Werror=implicit-function-declaration
6273     check_cflags -Werror=missing-prototypes
6274     check_cflags -Werror=return-type
6275     check_cflags -Werror=vla
6276     check_cflags -Wformat
6277     check_cflags -fdiagnostics-color=auto
6278     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6279 elif enabled llvm_gcc; then
6280     check_cflags -mllvm -stack-alignment=16
6281 elif enabled clang; then
6282     check_cflags -mllvm -stack-alignment=16
6283     check_cflags -mstack-alignment=16
6284     check_cflags -Qunused-arguments
6285     check_cflags -Werror=implicit-function-declaration
6286     check_cflags -Werror=missing-prototypes
6287     check_cflags -Werror=return-type
6288 elif enabled cparser; then
6289     add_cflags -Wno-missing-variable-declarations
6290     add_cflags -Wno-empty-statement
6291 elif enabled armcc; then
6292     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6293     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6294     # 2523: use of inline assembly is deprecated
6295     add_cflags -W${armcc_opt},--diag_suppress=2523
6296     add_cflags -W${armcc_opt},--diag_suppress=1207
6297     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6298     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6299     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6300     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6301 elif enabled tms470; then
6302     add_cflags -pds=824 -pds=837
6303     disable inline_asm
6304 elif enabled pathscale; then
6305     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6306 elif enabled_any msvc icl; then
6307     enabled x86_32 && disable aligned_stack
6308     enabled_all x86_32 debug && add_cflags -Oy-
6309     enabled debug && add_ldflags -debug
6310     enable pragma_deprecated
6311     if enabled icl; then
6312         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6313         # (correctly) on icl 13.x.
6314         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6315             add_cflags -Qansi-alias
6316         # Some inline asm is not compilable in debug
6317         if enabled debug; then
6318             disable ebp_available
6319             disable ebx_available
6320         fi
6321     fi
6322     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6323     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
6324     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6325     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6326     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6327     # MSVC 2013 and newer can handle it fine.
6328     # If this declspec fails, force including stdlib.h before the restrict redefinition
6329     # happens in config.h.
6330     if [ $_restrict != restrict ]; then
6331         check_cc <<EOF || add_cflags -FIstdlib.h
6332 __declspec($_restrict) void* foo(int);
6333 EOF
6334     fi
6335     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6336     # Issue has been fixed in MSVC v19.00.24218.
6337     check_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6338         check_cflags -d2SSAOptimizer-
6339     # enable utf-8 source processing on VS2015 U2 and newer
6340     check_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6341         add_cflags -utf-8
6342 fi
6343
6344 for pfx in "" host_; do
6345     varname=${pfx%_}cc_type
6346     eval "type=\$$varname"
6347     if [ $type = "msvc" ]; then
6348         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6349 static inline int foo(int a) { return a; }
6350 EOF
6351     fi
6352 done
6353
6354 case $as_type in
6355     clang)
6356         add_asflags -Qunused-arguments
6357     ;;
6358 esac
6359
6360 case $ld_type in
6361     clang)
6362         check_ldflags -Qunused-arguments
6363     ;;
6364 esac
6365
6366 case $target_os in
6367     osf1)
6368         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
6369     ;;
6370 esac
6371
6372 enable frame_thread_encoder
6373
6374 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6375
6376 check_deps $CONFIG_LIST       \
6377            $CONFIG_EXTRA      \
6378            $HAVE_LIST         \
6379            $ALL_COMPONENTS    \
6380
6381 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"
6382
6383
6384 if test $target_os = "haiku"; then
6385     disable memalign
6386     disable posix_memalign
6387 fi
6388
6389 enabled_all dxva2 dxva2api_cobj CoTaskMemFree &&
6390     prepend ffmpeg_libs $($ldflags_filter "-lole32") &&
6391     enable dxva2_lib
6392
6393 # add_dep lib dep
6394 # -> enable ${lib}_deps_${dep}
6395 # -> add $dep to ${lib}_deps only once
6396 add_dep() {
6397     lib=$1
6398     dep=$2
6399     enabled "${lib}_deps_${dep}" && return 0
6400     enable  "${lib}_deps_${dep}"
6401     prepend "${lib}_deps" $dep
6402 }
6403
6404 # merge deps lib components
6405 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
6406 merge_deps() {
6407     lib=$1
6408     shift
6409     for comp in $*; do
6410         enabled $comp || continue
6411         eval "dep=\"\$${comp}_deps\""
6412         for d in $dep; do
6413             add_dep $lib $d
6414         done
6415     done
6416 }
6417
6418 merge_deps libavfilter $FILTER_LIST
6419
6420 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6421
6422 for thread in $THREADS_LIST; do
6423     if enabled $thread; then
6424         test -n "$thread_type" &&
6425             die "ERROR: Only one thread type must be selected." ||
6426             thread_type="$thread"
6427     fi
6428 done
6429
6430 if disabled stdatomic_h; then
6431     if enabled atomics_gcc; then
6432         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6433     elif enabled atomics_win32; then
6434         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6435     elif enabled atomics_suncc; then
6436         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6437     elif enabled pthreads; then
6438         add_compat atomics/pthread/stdatomic.o
6439         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6440     else
6441         enabled threads && die "Threading is enabled, but no atomics are available"
6442         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6443     fi
6444 fi
6445
6446 # Check if requested libraries were found.
6447 for lib in $AUTODETECT_LIBS; do
6448     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6449 done
6450
6451 enabled zlib && add_cppflags -DZLIB_CONST
6452
6453 # conditional library dependencies, in linking order
6454 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6455 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6456 enabled aresample_filter    && prepend avfilter_deps "swresample"
6457 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6458 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6459 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6460 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6461 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6462 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6463 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6464 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6465 enabled pan_filter          && prepend avfilter_deps "swresample"
6466 enabled pp_filter           && prepend avfilter_deps "postproc"
6467 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6468 enabled resample_filter && prepend avfilter_deps "avresample"
6469 enabled sab_filter          && prepend avfilter_deps "swscale"
6470 enabled scale_filter    && prepend avfilter_deps "swscale"
6471 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6472 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6473 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6474 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6475 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6476 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6477 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6478 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6479 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6480
6481 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6482
6483 enabled opus_decoder    && prepend avcodec_deps "swresample"
6484
6485 expand_deps(){
6486     lib_deps=${1}_deps
6487     eval "deps=\$$lib_deps"
6488     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6489     unique $lib_deps
6490 }
6491
6492 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6493 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6494
6495 map 'expand_deps $v' $LIBRARY_LIST
6496
6497 license="LGPL version 2.1 or later"
6498 if enabled nonfree; then
6499     license="nonfree and unredistributable"
6500 elif enabled gplv3; then
6501     license="GPL version 3 or later"
6502 elif enabled lgplv3; then
6503     license="LGPL version 3 or later"
6504 elif enabled gpl; then
6505     license="GPL version 2 or later"
6506 fi
6507
6508 if test "$quiet" != "yes"; then
6509
6510 echo "install prefix            $prefix"
6511 echo "source path               $source_path"
6512 echo "C compiler                $cc"
6513 echo "C library                 $libc_type"
6514 if test "$host_cc" != "$cc"; then
6515     echo "host C compiler           $host_cc"
6516     echo "host C library            $host_libc_type"
6517 fi
6518 echo "ARCH                      $arch ($cpu)"
6519 if test "$build_suffix" != ""; then
6520     echo "build suffix              $build_suffix"
6521 fi
6522 if test "$progs_suffix" != ""; then
6523     echo "progs suffix              $progs_suffix"
6524 fi
6525 if test "$extra_version" != ""; then
6526     echo "version string suffix     $extra_version"
6527 fi
6528 echo "big-endian                ${bigendian-no}"
6529 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6530 if enabled x86; then
6531     echo "${yasmexe}                      ${yasm-no}"
6532     echo "MMX enabled               ${mmx-no}"
6533     echo "MMXEXT enabled            ${mmxext-no}"
6534     echo "3DNow! enabled            ${amd3dnow-no}"
6535     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6536     echo "SSE enabled               ${sse-no}"
6537     echo "SSSE3 enabled             ${ssse3-no}"
6538     echo "AESNI enabled             ${aesni-no}"
6539     echo "AVX enabled               ${avx-no}"
6540     echo "XOP enabled               ${xop-no}"
6541     echo "FMA3 enabled              ${fma3-no}"
6542     echo "FMA4 enabled              ${fma4-no}"
6543     echo "i686 features enabled     ${i686-no}"
6544     echo "CMOV is fast              ${fast_cmov-no}"
6545     echo "EBX available             ${ebx_available-no}"
6546     echo "EBP available             ${ebp_available-no}"
6547 fi
6548 if enabled aarch64; then
6549     echo "NEON enabled              ${neon-no}"
6550     echo "VFP enabled               ${vfp-no}"
6551 fi
6552 if enabled arm; then
6553     echo "ARMv5TE enabled           ${armv5te-no}"
6554     echo "ARMv6 enabled             ${armv6-no}"
6555     echo "ARMv6T2 enabled           ${armv6t2-no}"
6556     echo "VFP enabled               ${vfp-no}"
6557     echo "NEON enabled              ${neon-no}"
6558     echo "THUMB enabled             ${thumb-no}"
6559 fi
6560 if enabled mips; then
6561     echo "MIPS FPU enabled          ${mipsfpu-no}"
6562     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6563     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6564     echo "MIPS MSA enabled          ${msa-no}"
6565     echo "LOONGSON MMI enabled      ${mmi-no}"
6566 fi
6567 if enabled ppc; then
6568     echo "AltiVec enabled           ${altivec-no}"
6569     echo "VSX enabled               ${vsx-no}"
6570     echo "POWER8 enabled            ${power8-no}"
6571     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6572     echo "dcbzl available           ${dcbzl-no}"
6573 fi
6574 echo "debug symbols             ${debug-no}"
6575 echo "strip symbols             ${stripping-no}"
6576 echo "optimize for size         ${small-no}"
6577 echo "optimizations             ${optimizations-no}"
6578 echo "static                    ${static-no}"
6579 echo "shared                    ${shared-no}"
6580 echo "postprocessing support    ${postproc-no}"
6581 echo "network support           ${network-no}"
6582 echo "threading support         ${thread_type-no}"
6583 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6584 echo "texi2html enabled         ${texi2html-no}"
6585 echo "perl enabled              ${perl-no}"
6586 echo "pod2man enabled           ${pod2man-no}"
6587 echo "makeinfo enabled          ${makeinfo-no}"
6588 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6589 test -n "$random_seed" &&
6590     echo "random seed               ${random_seed}"
6591 echo
6592
6593 echo "External libraries:"
6594 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_in_columns
6595 echo
6596
6597 echo "External libraries providing hardware acceleration:"
6598 print_enabled '' $HWACCEL_LIBRARY_LIST | print_in_columns
6599 echo
6600
6601 echo "Libraries:"
6602 print_enabled '' $LIBRARY_LIST | print_in_columns
6603 echo
6604
6605 echo "Programs:"
6606 print_enabled '' $PROGRAM_LIST | print_in_columns
6607 echo
6608
6609 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6610     echo "Enabled ${type}s:"
6611     eval list=\$$(toupper $type)_LIST
6612     print_enabled '_*' $list | print_in_columns
6613     echo
6614 done
6615
6616 echo "License: $license"
6617
6618 echo "Creating configuration files ..."
6619
6620 fi # test "$quiet" != "yes"
6621
6622 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6623
6624 enabled stripping || strip="echo skipping strip"
6625
6626 config_files="$TMPH config.mak doc/config.texi"
6627
6628 cat > config.mak <<EOF
6629 # Automatically generated by configure - do not modify!
6630 ifndef FFMPEG_CONFIG_MAK
6631 FFMPEG_CONFIG_MAK=1
6632 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6633 prefix=$prefix
6634 LIBDIR=\$(DESTDIR)$libdir
6635 SHLIBDIR=\$(DESTDIR)$shlibdir
6636 INCDIR=\$(DESTDIR)$incdir
6637 BINDIR=\$(DESTDIR)$bindir
6638 DATADIR=\$(DESTDIR)$datadir
6639 DOCDIR=\$(DESTDIR)$docdir
6640 MANDIR=\$(DESTDIR)$mandir
6641 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6642 INSTALL_NAME_DIR=$install_name_dir
6643 SRC_PATH=$source_path
6644 SRC_LINK=$source_link
6645 ifndef MAIN_MAKEFILE
6646 SRC_PATH:=\$(SRC_PATH:.%=..%)
6647 endif
6648 CC_IDENT=$cc_ident
6649 ARCH=$arch
6650 INTRINSICS=$intrinsics
6651 CC=$cc
6652 CXX=$cxx
6653 AS=$as
6654 OBJCC=$objcc
6655 LD=$ld
6656 DEPCC=$dep_cc
6657 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6658 DEPAS=$as
6659 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6660 YASM=$yasmexe
6661 DEPYASM=$yasmexe
6662 AR=$ar
6663 ARFLAGS=$arflags
6664 AR_O=$ar_o
6665 RANLIB=$ranlib
6666 STRIP=$strip
6667 CP=cp -p
6668 LN_S=$ln_s
6669 CPPFLAGS=$CPPFLAGS
6670 CFLAGS=$CFLAGS
6671 CXXFLAGS=$CXXFLAGS
6672 OBJCFLAGS=$OBJCFLAGS
6673 ASFLAGS=$ASFLAGS
6674 AS_C=$AS_C
6675 AS_O=$AS_O
6676 OBJCC_C=$OBJCC_C
6677 OBJCC_E=$OBJCC_E
6678 OBJCC_O=$OBJCC_O
6679 CC_C=$CC_C
6680 CC_E=$CC_E
6681 CC_O=$CC_O
6682 CXX_C=$CXX_C
6683 CXX_O=$CXX_O
6684 LD_O=$LD_O
6685 LD_LIB=$LD_LIB
6686 LD_PATH=$LD_PATH
6687 DLLTOOL=$dlltool
6688 WINDRES=$windres
6689 DEPWINDRES=$dep_cc
6690 DOXYGEN=$doxygen
6691 LDFLAGS=$LDFLAGS
6692 LDEXEFLAGS=$LDEXEFLAGS
6693 LDLIBFLAGS=$LDLIBFLAGS
6694 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
6695 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
6696 YASMFLAGS=$YASMFLAGS
6697 BUILDSUF=$build_suffix
6698 PROGSSUF=$progs_suffix
6699 FULLNAME=$FULLNAME
6700 LIBPREF=$LIBPREF
6701 LIBSUF=$LIBSUF
6702 LIBNAME=$LIBNAME
6703 SLIBPREF=$SLIBPREF
6704 SLIBSUF=$SLIBSUF
6705 EXESUF=$EXESUF
6706 EXTRA_VERSION=$extra_version
6707 CCDEP=$CCDEP
6708 CXXDEP=$CXXDEP
6709 CCDEP_FLAGS=$CCDEP_FLAGS
6710 ASDEP=$ASDEP
6711 ASDEP_FLAGS=$ASDEP_FLAGS
6712 CC_DEPFLAGS=$CC_DEPFLAGS
6713 AS_DEPFLAGS=$AS_DEPFLAGS
6714 HOSTCC=$host_cc
6715 HOSTLD=$host_ld
6716 HOSTCFLAGS=$host_cflags
6717 HOSTCPPFLAGS=$host_cppflags
6718 HOSTEXESUF=$HOSTEXESUF
6719 HOSTLDFLAGS=$host_ldflags
6720 HOSTLIBS=$host_libs
6721 DEPHOSTCC=$host_cc
6722 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
6723 HOSTCCDEP=$HOSTCCDEP
6724 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
6725 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
6726 HOSTCC_C=$HOSTCC_C
6727 HOSTCC_O=$HOSTCC_O
6728 HOSTLD_O=$HOSTLD_O
6729 TARGET_EXEC=$target_exec $target_exec_args
6730 TARGET_PATH=$target_path
6731 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
6732 CFLAGS-ffplay=${sdl2_cflags}
6733 CFLAGS_HEADERS=$cflags_headers
6734 ZLIB=$($ldflags_filter -lz)
6735 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
6736 EXTRALIBS=$extralibs
6737 COMPAT_OBJS=$compat_objs
6738 INSTALL=$install
6739 LIBTARGET=${LIBTARGET}
6740 SLIBNAME=${SLIBNAME}
6741 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
6742 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
6743 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
6744 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
6745 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
6746 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
6747 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
6748 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
6749 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
6750 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
6751 NOREDZONE_FLAGS=$noredzone_flags
6752 EOF
6753
6754 get_version(){
6755     lcname=lib${1}
6756     name=$(toupper $lcname)
6757     file=$source_path/$lcname/version.h
6758     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
6759     enabled raise_major && eval ${name}_VERSION_MAJOR=$((${name}_VERSION_MAJOR+100))
6760     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
6761     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
6762     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
6763     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
6764 }
6765
6766 map 'get_version $v' $LIBRARY_LIST
6767
6768 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> config.mak' $LIBRARY_LIST
6769
6770 print_program_libs(){
6771     eval "program_libs=\$${1}_libs"
6772     eval echo "LIBS-${1}=${program_libs}" >> config.mak
6773 }
6774
6775 map 'print_program_libs $v' $PROGRAM_LIST
6776
6777 cat > $TMPH <<EOF
6778 /* Automatically generated by configure - do not modify! */
6779 #ifndef FFMPEG_CONFIG_H
6780 #define FFMPEG_CONFIG_H
6781 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
6782 #define FFMPEG_LICENSE "$(c_escape $license)"
6783 #define CONFIG_THIS_YEAR 2017
6784 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
6785 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
6786 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
6787 #define av_restrict $_restrict
6788 #define EXTERN_PREFIX "${extern_prefix}"
6789 #define EXTERN_ASM ${extern_prefix}
6790 #define BUILDSUF "$build_suffix"
6791 #define SLIBSUF "$SLIBSUF"
6792 #define HAVE_MMX2 HAVE_MMXEXT
6793 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
6794 EOF
6795
6796 test -n "$assert_level" &&
6797     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
6798
6799 test -n "$malloc_prefix" &&
6800     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
6801
6802 if enabled yasm; then
6803     append config_files $TMPASM
6804     printf '' >$TMPASM
6805 fi
6806
6807 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
6808
6809
6810 mkdir -p doc
6811 mkdir -p tests
6812 mkdir -p tests/api
6813 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
6814
6815 print_config ARCH_   "$config_files" $ARCH_LIST
6816 print_config HAVE_   "$config_files" $HAVE_LIST
6817 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
6818                                      $CONFIG_EXTRA      \
6819                                      $ALL_COMPONENTS    \
6820
6821 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
6822 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
6823
6824 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
6825 cp_if_changed $TMPH config.h
6826 touch .config
6827
6828 enabled yasm && cp_if_changed $TMPASM config.asm
6829
6830 cat > $TMPH <<EOF
6831 /* Generated by ffconf */
6832 #ifndef AVUTIL_AVCONFIG_H
6833 #define AVUTIL_AVCONFIG_H
6834 EOF
6835
6836 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
6837
6838 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
6839
6840 cp_if_changed $TMPH libavutil/avconfig.h
6841
6842 # generate the lists of enabled components
6843 print_enabled_components(){
6844     file=$1
6845     struct_name=$2
6846     name=$3
6847     shift 3
6848     echo "static const $struct_name *$name[] = {" > $TMPH
6849     for c in $*; do
6850         enabled $c && printf "    &ff_%s,\n" $c >> $TMPH
6851     done
6852     echo "    NULL };" >> $TMPH
6853     cp_if_changed $TMPH $file
6854 }
6855
6856 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
6857 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
6858
6859 if test -n "$WARNINGS"; then
6860     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
6861     enabled fatal_warnings && exit 1
6862 fi
6863
6864 # build pkg-config files
6865
6866 lib_version(){
6867     eval printf "\"lib${1}${build_suffix} >= \$LIB$(toupper ${1})_VERSION, \""
6868 }
6869
6870 pkgconfig_generate(){
6871     name=$1
6872     shortname=${name#lib}${build_suffix}
6873     comment=$2
6874     version=$3
6875     libs=$4
6876     requires=$(map 'lib_version $v' $(eval echo \$${name#lib}_deps))
6877     requires=${requires%, }
6878     enabled ${name#lib} || return 0
6879     mkdir -p $name
6880     cat <<EOF > $name/$name${build_suffix}.pc
6881 prefix=$prefix
6882 exec_prefix=\${prefix}
6883 libdir=$libdir
6884 includedir=$incdir
6885
6886 Name: $name
6887 Description: $comment
6888 Version: $version
6889 Requires: $(enabled shared || echo $requires)
6890 Requires.private: $(enabled shared && echo $requires)
6891 Conflicts:
6892 Libs: -L\${libdir} $(enabled rpath && echo "-Wl,-rpath,\${libdir}") -l${shortname} $(enabled shared || echo $libs)
6893 Libs.private: $(enabled shared && echo $libs)
6894 Cflags: -I\${includedir}
6895 EOF
6896
6897 mkdir -p doc/examples/pc-uninstalled
6898 includedir=${source_path}
6899 [ "$includedir" = . ] && includedir="\${pcfiledir}/../../.."
6900     cat <<EOF > doc/examples/pc-uninstalled/${name}-uninstalled.pc
6901 prefix=
6902 exec_prefix=
6903 libdir=\${pcfiledir}/../../../$name
6904 includedir=${includedir}
6905
6906 Name: $name
6907 Description: $comment
6908 Version: $version
6909 Requires: $requires
6910 Conflicts:
6911 Libs: -L\${libdir} -Wl,-rpath,\${libdir} -l${shortname} $(enabled shared || echo $libs)
6912 Cflags: -I\${includedir}
6913 EOF
6914 }
6915
6916 pkgconfig_generate libavutil     "FFmpeg utility library"               "$LIBAVUTIL_VERSION"     "$LIBRT $LIBM"
6917 pkgconfig_generate libavcodec    "FFmpeg codec library"                 "$LIBAVCODEC_VERSION"    "$extralibs"
6918 pkgconfig_generate libavformat   "FFmpeg container format library"      "$LIBAVFORMAT_VERSION"   "$extralibs"
6919 pkgconfig_generate libavdevice   "FFmpeg device handling library"       "$LIBAVDEVICE_VERSION"   "$extralibs"
6920 pkgconfig_generate libavfilter   "FFmpeg audio/video filtering library" "$LIBAVFILTER_VERSION"   "$extralibs"
6921 pkgconfig_generate libpostproc   "FFmpeg postprocessing library"        "$LIBPOSTPROC_VERSION"   ""
6922 pkgconfig_generate libavresample "Libav audio resampling library"       "$LIBAVRESAMPLE_VERSION" "$LIBM"
6923 pkgconfig_generate libswscale    "FFmpeg image rescaling library"       "$LIBSWSCALE_VERSION"    "$LIBM"
6924 pkgconfig_generate libswresample "FFmpeg audio resampling library"      "$LIBSWRESAMPLE_VERSION" "$LIBM $LIBSOXR"