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

   1 #!/bin/sh
   2 #
   3 # FFmpeg configure script
   4 #
   5 # Copyright (c) 2000-2002 Fabrice Bellard
   6 # Copyright (c) 2005-2008 Diego Biurrun
   7 # Copyright (c) 2005-2008 Mans Rullgard
   8 #
   9
  10 # Prevent locale nonsense from breaking basic text processing.
  11 LC_ALL=C
  12 export LC_ALL
  13
  14 # make sure we are running under a compatible shell
  15 # try to make this part work with most shells
  16
  17 try_exec(){
  18     echo "Trying shell $1"
  19     type "$1" > /dev/null 2>&1 && exec "$@"
  20 }
  21
  22 unset foo
  23 (: ${foo%%bar}) 2> /dev/null
  24 E1="$?"
  25
  26 (: ${foo?}) 2> /dev/null
  27 E2="$?"
  28
  29 if test "$E1" != 0 || test "$E2" = 0; then
  30     echo "Broken shell detected.  Trying alternatives."
  31     export FF_CONF_EXEC
  32     if test "0$FF_CONF_EXEC" -lt 1; then
  33         FF_CONF_EXEC=1
  34         try_exec bash "$0" "$@"
  35     fi
  36     if test "0$FF_CONF_EXEC" -lt 2; then
  37         FF_CONF_EXEC=2
  38         try_exec ksh "$0" "$@"
  39     fi
  40     if test "0$FF_CONF_EXEC" -lt 3; then
  41         FF_CONF_EXEC=3
  42         try_exec /usr/xpg4/bin/sh "$0" "$@"
  43     fi
  44     echo "No compatible shell script interpreter found."
  45     echo "This configure script requires a POSIX-compatible shell"
  46     echo "such as bash or ksh."
  47     echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
  48     echo "Instead, install a working POSIX-compatible shell."
  49     echo "Disabling this configure test will create a broken FFmpeg."
  50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
  51         echo "This bash version ($BASH_VERSION) is broken on your platform."
  52         echo "Upgrade to a later version if available."
  53     fi
  54     exit 1
  55 fi
  56
  57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
  58
  59 show_help(){
  60     cat <<EOF
  61 Usage: configure [options]
  62 Options: [defaults in brackets after descriptions]
  63
  64 Help options:
  65   --help                   print this message
  66   --quiet                  Suppress showing informative output
  67   --list-decoders          show all available decoders
  68   --list-encoders          show all available encoders
  69   --list-hwaccels          show all available hardware accelerators
  70   --list-demuxers          show all available demuxers
  71   --list-muxers            show all available muxers
  72   --list-parsers           show all available parsers
  73   --list-protocols         show all available protocols
  74   --list-bsfs              show all available bitstream filters
  75   --list-indevs            show all available input devices
  76   --list-outdevs           show all available output devices
  77   --list-filters           show all available filters
  78
  79 Standard options:
  80   --logfile=FILE           log tests and output to FILE [config.log]
  81   --disable-logging        do not log configure debug information
  82   --fatal-warnings         fail if any configure warning is generated
  83   --prefix=PREFIX          install in PREFIX [$prefix_default]
  84   --bindir=DIR             install binaries in DIR [PREFIX/bin]
  85   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
  86   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
  87   --libdir=DIR             install libs in DIR [PREFIX/lib]
  88   --shlibdir=DIR           install shared libs in DIR [LIBDIR]
  89   --incdir=DIR             install includes in DIR [PREFIX/include]
  90   --mandir=DIR             install man page in DIR [PREFIX/share/man]
  91   --pkgconfigdir=DIR       install pkg-config files in DIR [LIBDIR/pkgconfig]
  92   --enable-rpath           use rpath to allow installing libraries in paths
  93                            not part of the dynamic linker search path
  94                            use rpath when linking programs (USE WITH CARE)
  95   --install-name-dir=DIR   Darwin directory name for installed targets
  96
  97 Licensing options:
  98   --enable-gpl             allow use of GPL code, the resulting libs
  99                            and binaries will be under GPL [no]
 100   --enable-version3        upgrade (L)GPL to version 3 [no]
 101   --enable-nonfree         allow use of nonfree code, the resulting libs
 102                            and binaries will be unredistributable [no]
 103
 104 Configuration options:
 105   --disable-static         do not build static libraries [no]
 106   --enable-shared          build shared libraries [no]
 107   --enable-small           optimize for size instead of speed
 108   --disable-runtime-cpudetect disable detecting CPU capabilities at runtime (smaller binary)
 109   --enable-gray            enable full grayscale support (slower color)
 110   --disable-swscale-alpha  disable alpha channel support in swscale
 111   --disable-all            disable building components, libraries and programs
 112   --enable-raise-major     increase major version numbers in sonames [no]
 113
 114 Program options:
 115   --disable-programs       do not build command line programs
 116   --disable-ffmpeg         disable ffmpeg build
 117   --disable-ffplay         disable ffplay build
 118   --disable-ffprobe        disable ffprobe build
 119   --disable-ffserver       disable ffserver build
 120
 121 Documentation options:
 122   --disable-doc            do not build documentation
 123   --disable-htmlpages      do not build HTML documentation pages
 124   --disable-manpages       do not build man documentation pages
 125   --disable-podpages       do not build POD documentation pages
 126   --disable-txtpages       do not build text documentation pages
 127
 128 Component options:
 129   --disable-avdevice       disable libavdevice build
 130   --disable-avcodec        disable libavcodec build
 131   --disable-avformat       disable libavformat build
 132   --disable-swresample     disable libswresample build
 133   --disable-swscale        disable libswscale build
 134   --disable-postproc       disable libpostproc build
 135   --disable-avfilter       disable libavfilter build
 136   --enable-avresample      enable libavresample build [no]
 137   --disable-pthreads       disable pthreads [autodetect]
 138   --disable-w32threads     disable Win32 threads [autodetect]
 139   --disable-os2threads     disable OS/2 threads [autodetect]
 140   --disable-network        disable network support [no]
 141   --disable-dct            disable DCT code
 142   --disable-dwt            disable DWT code
 143   --disable-error-resilience disable error resilience code
 144   --disable-lsp            disable LSP code
 145   --disable-lzo            disable LZO decoder code
 146   --disable-mdct           disable MDCT code
 147   --disable-rdft           disable RDFT code
 148   --disable-fft            disable FFT code
 149   --disable-faan           disable floating point AAN (I)DCT code
 150   --disable-pixelutils     disable pixel utils in libavutil
 151
 152 Individual component options:
 153   --disable-everything     disable all components listed below
 154   --disable-encoder=NAME   disable encoder NAME
 155   --enable-encoder=NAME    enable encoder NAME
 156   --disable-encoders       disable all encoders
 157   --disable-decoder=NAME   disable decoder NAME
 158   --enable-decoder=NAME    enable decoder NAME
 159   --disable-decoders       disable all decoders
 160   --disable-hwaccel=NAME   disable hwaccel NAME
 161   --enable-hwaccel=NAME    enable hwaccel NAME
 162   --disable-hwaccels       disable all hwaccels
 163   --disable-muxer=NAME     disable muxer NAME
 164   --enable-muxer=NAME      enable muxer NAME
 165   --disable-muxers         disable all muxers
 166   --disable-demuxer=NAME   disable demuxer NAME
 167   --enable-demuxer=NAME    enable demuxer NAME
 168   --disable-demuxers       disable all demuxers
 169   --enable-parser=NAME     enable parser NAME
 170   --disable-parser=NAME    disable parser NAME
 171   --disable-parsers        disable all parsers
 172   --enable-bsf=NAME        enable bitstream filter NAME
 173   --disable-bsf=NAME       disable bitstream filter NAME
 174   --disable-bsfs           disable all bitstream filters
 175   --enable-protocol=NAME   enable protocol NAME
 176   --disable-protocol=NAME  disable protocol NAME
 177   --disable-protocols      disable all protocols
 178   --enable-indev=NAME      enable input device NAME
 179   --disable-indev=NAME     disable input device NAME
 180   --disable-indevs         disable input devices
 181   --enable-outdev=NAME     enable output device NAME
 182   --disable-outdev=NAME    disable output device NAME
 183   --disable-outdevs        disable output devices
 184   --disable-devices        disable all devices
 185   --enable-filter=NAME     enable filter NAME
 186   --disable-filter=NAME    disable filter NAME
 187   --disable-filters        disable all filters
 188
 189 External library support:
 190
 191   Using any of the following switches will allow FFmpeg to link to the
 192   corresponding external library. All the components depending on that library
 193   will become enabled, if all their other dependencies are met and they are not
 194   explicitly disabled. E.g. --enable-libwavpack will enable linking to
 195   libwavpack and allow the libwavpack encoder to be built, unless it is
 196   specifically disabled with --disable-encoder=libwavpack.
 197
 198   Note that only the system libraries are auto-detected. All the other external
 199   libraries must be explicitly enabled.
 200
 201   Also note that the following help text describes the purpose of the libraries
 202   themselves, not all their features will necessarily be usable by FFmpeg.
 203
 204   --enable-avisynth        enable reading of AviSynth script files [no]
 205   --disable-bzlib          disable bzlib [autodetect]
 206   --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
 207   --enable-frei0r          enable frei0r video filtering [no]
 208   --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
 209                            if openssl, librtmp or gmp is not used [no]
 210   --enable-gmp             enable gmp, needed for rtmp(t)e support
 211                            if openssl or librtmp is not used [no]
 212   --enable-gnutls          enable gnutls, needed for https support
 213                            if openssl is not used [no]
 214   --disable-iconv          disable iconv [autodetect]
 215   --enable-jni             enable JNI support [no]
 216   --enable-ladspa          enable LADSPA audio filtering [no]
 217   --enable-libass          enable libass subtitles rendering,
 218                            needed for subtitles and ass filter [no]
 219   --enable-libbluray       enable BluRay reading using libbluray [no]
 220   --enable-libbs2b         enable bs2b DSP library [no]
 221   --enable-libcaca         enable textual display using libcaca [no]
 222   --enable-libcelt         enable CELT decoding via libcelt [no]
 223   --enable-libcdio         enable audio CD grabbing with libcdio [no]
 224   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 225                            and libraw1394 [no]
 226   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 227   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 228   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
 229   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
 230   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
 231   --enable-libgme          enable Game Music Emu via libgme [no]
 232   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 233   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 234   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 235   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
 236   --enable-libmodplug      enable ModPlug via libmodplug [no]
 237   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 238   --enable-libnut          enable NUT (de)muxing via libnut,
 239                            native (de)muxer exists [no]
 240   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 241   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 242   --enable-libopencv       enable video filtering via libopencv [no]
 243   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 244   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 245   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
 246   --enable-libopus         enable Opus de/encoding via libopus [no]
 247   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 248   --enable-librubberband   enable rubberband needed for rubberband filter [no]
 249   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 250   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
 251   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 252   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 253   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
 254   --enable-libsoxr         enable Include libsoxr resampling [no]
 255   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 256   --enable-libssh          enable SFTP protocol via libssh [no]
 257   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
 258   --enable-libtheora       enable Theora encoding via libtheora [no]
 259   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 260   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 261   --enable-libvidstab      enable video stabilization using vid.stab [no]
 262   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 263   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 264                            native implementation exists [no]
 265   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 266   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 267   --enable-libwebp         enable WebP encoding via libwebp [no]
 268   --enable-libx264         enable H.264 encoding via x264 [no]
 269   --enable-libx265         enable HEVC encoding via x265 [no]
 270   --enable-libxavs         enable AVS encoding via xavs [no]
 271   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
 272   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
 273   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
 274   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
 275   --enable-libxvid         enable Xvid encoding via xvidcore,
 276                            native MPEG-4/Xvid encoder exists [no]
 277   --enable-libzimg         enable z.lib, needed for zscale filter [no]
 278   --enable-libzmq          enable message passing via libzmq [no]
 279   --enable-libzvbi         enable teletext support via libzvbi [no]
 280   --disable-lzma           disable lzma [autodetect]
 281   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
 282   --enable-mediacodec      enable Android MediaCodec support [no]
 283   --enable-netcdf          enable NetCDF, needed for sofalizer filter [no]
 284   --enable-openal          enable OpenAL 1.1 capture support [no]
 285   --enable-opencl          enable OpenCL code
 286   --enable-opengl          enable OpenGL rendering [no]
 287   --enable-openssl         enable openssl, needed for https support
 288                            if gnutls is not used [no]
 289   --disable-schannel       disable SChannel SSP, needed for TLS support on
 290                            Windows if openssl and gnutls are not used [autodetect]
 291   --disable-sdl2           disable sdl2 [autodetect]
 292   --disable-securetransport disable Secure Transport, needed for TLS support
 293                            on OSX if openssl and gnutls are not used [autodetect]
 294   --disable-xlib           disable xlib [autodetect]
 295   --disable-zlib           disable zlib [autodetect]
 296
 297   The following libraries provide various hardware acceleration features:
 298   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
 299   --disable-cuda           disable dynamically linked Nvidia CUDA code [autodetect]
 300   --disable-cuvid          disable Nvidia CUVID support [autodetect]
 301   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
 302   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
 303   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
 304   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
 305   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
 306   --disable-nvenc          disable Nvidia video encoding code [autodetect]
 307   --enable-omx             enable OpenMAX IL code [no]
 308   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
 309   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
 310   --disable-vda            disable Apple Video Decode Acceleration code [autodetect]
 311   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
 312   --disable-videotoolbox   disable VideoToolbox code [autodetect]
 313
 314 Toolchain options:
 315   --arch=ARCH              select architecture [$arch]
 316   --cpu=CPU                select the minimum required CPU (affects
 317                            instruction selection, may crash on older CPUs)
 318   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 319   --progs-suffix=SUFFIX    program name suffix []
 320   --enable-cross-compile   assume a cross-compiler is used
 321   --sysroot=PATH           root of cross-build tree
 322   --sysinclude=PATH        location of cross-build system headers
 323   --target-os=OS           compiler targets OS [$target_os]
 324   --target-exec=CMD        command to run executables on target
 325   --target-path=DIR        path to view of build directory on target
 326   --target-samples=DIR     path to samples directory on target
 327   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 328   --toolchain=NAME         set tool defaults according to NAME
 329   --nm=NM                  use nm tool NM [$nm_default]
 330   --ar=AR                  use archive tool AR [$ar_default]
 331   --as=AS                  use assembler AS [$as_default]
 332   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
 333   --strip=STRIP            use strip tool STRIP [$strip_default]
 334   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 335   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
 336   --cc=CC                  use C compiler CC [$cc_default]
 337   --cxx=CXX                use C compiler CXX [$cxx_default]
 338   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 339   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 340   --ld=LD                  use linker LD [$ld_default]
 341   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 342   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 343   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 344   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 345   --host-cc=HOSTCC         use host C compiler HOSTCC
 346   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 347   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 348   --host-ld=HOSTLD         use host linker HOSTLD
 349   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 350   --host-libs=HLIBS        use libs HLIBS when linking for host
 351   --host-os=OS             compiler host OS [$target_os]
 352   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 353   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 354   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 355   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 356   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 357   --extra-ldlibflags=ELDFLAGS add ELDFLAGS to LDLIBFLAGS [$LDLIBFLAGS]
 358   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 359   --extra-version=STRING   version string suffix []
 360   --optflags=OPTFLAGS      override optimization-related compiler flags
 361   --build-suffix=SUFFIX    library name suffix []
 362   --enable-pic             build position-independent code
 363   --enable-thumb           compile for Thumb instruction set
 364   --enable-lto             use link-time optimization
 365   --env="ENV=override"     override the environment variables
 366
 367 Advanced options (experts only):
 368   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 369   --custom-allocator=NAME  use a supported custom allocator
 370   --disable-symver         disable symbol versioning
 371   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 372   --disable-safe-bitstream-reader
 373                            disable buffer boundary checking in bitreaders
 374                            (faster, but may crash)
 375   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 376
 377 Optimization options (experts only):
 378   --disable-asm            disable all assembly optimizations
 379   --disable-altivec        disable AltiVec optimizations
 380   --disable-vsx            disable VSX optimizations
 381   --disable-power8         disable POWER8 optimizations
 382   --disable-amd3dnow       disable 3DNow! optimizations
 383   --disable-amd3dnowext    disable 3DNow! extended optimizations
 384   --disable-mmx            disable MMX optimizations
 385   --disable-mmxext         disable MMXEXT optimizations
 386   --disable-sse            disable SSE optimizations
 387   --disable-sse2           disable SSE2 optimizations
 388   --disable-sse3           disable SSE3 optimizations
 389   --disable-ssse3          disable SSSE3 optimizations
 390   --disable-sse4           disable SSE4 optimizations
 391   --disable-sse42          disable SSE4.2 optimizations
 392   --disable-avx            disable AVX optimizations
 393   --disable-xop            disable XOP optimizations
 394   --disable-fma3           disable FMA3 optimizations
 395   --disable-fma4           disable FMA4 optimizations
 396   --disable-avx2           disable AVX2 optimizations
 397   --disable-aesni          disable AESNI optimizations
 398   --disable-armv5te        disable armv5te optimizations
 399   --disable-armv6          disable armv6 optimizations
 400   --disable-armv6t2        disable armv6t2 optimizations
 401   --disable-vfp            disable VFP optimizations
 402   --disable-neon           disable NEON optimizations
 403   --disable-inline-asm     disable use of inline assembly
 404   --disable-yasm           disable use of nasm/yasm assembly
 405   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
 406   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 407   --disable-msa            disable MSA optimizations
 408   --disable-mipsfpu        disable floating point MIPS optimizations
 409   --disable-mmi            disable Loongson SIMD optimizations
 410   --disable-fast-unaligned consider unaligned accesses slow
 411
 412 Developer options (useful when working on FFmpeg itself):
 413   --disable-debug          disable debugging symbols
 414   --enable-debug=LEVEL     set the debug level [$debuglevel]
 415   --disable-optimizations  disable compiler optimizations
 416   --enable-extra-warnings  enable more compiler warnings
 417   --disable-stripping      disable stripping of executables and shared libraries
 418   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 419                            2 causes a slowdown at runtime.
 420   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 421   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 422                            leaks and errors, using the specified valgrind binary.
 423                            Cannot be combined with --target-exec
 424   --enable-ftrapv          Trap arithmetic overflows
 425   --samples=PATH           location of test samples for FATE, if not set use
 426                            \$FATE_SAMPLES at make invocation time.
 427   --enable-neon-clobber-test check NEON registers for clobbering (should be
 428                            used only for debugging purposes)
 429   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 430                            should be used only for debugging purposes)
 431   --enable-random          randomly enable/disable components
 432   --disable-random
 433   --enable-random=LIST     randomly enable/disable specific components or
 434   --disable-random=LIST    component groups. LIST is a comma-separated list
 435                            of NAME[:PROB] entries where NAME is a component
 436                            (group) and PROB the probability associated with
 437                            NAME (default 0.5).
 438   --random-seed=VALUE      seed value for --enable/disable-random
 439   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 440                            (only applies to --disable-optimizations builds)
 441
 442 NOTE: Object files are built at the place where configure is launched.
 443 EOF
 444   exit 0
 445 }
 446
 447 quotes='""'
 448 if test -t 1 && which tput >/dev/null 2>&1; then
 449     ncolors=$(tput colors)
 450     if test -n "$ncolors" && test $ncolors -ge 8; then
 451         bold_color=$(tput bold)
 452         warn_color=$(tput setaf 3)
 453         error_color=$(tput setaf 1)
 454         reset_color=$(tput sgr0)
 455     fi
 456     # 72 used instead of 80 since that's the default of pr
 457     ncols=$(tput cols)
 458 fi
 459 : ${ncols:=72}
 460
 461 log(){
 462     echo "$@" >> $logfile
 463 }
 464
 465 log_file(){
 466     log BEGIN $1
 467     pr -n -t $1 >> $logfile
 468     log END $1
 469 }
 470
 471 warn(){
 472     log "WARNING: $*"
 473     WARNINGS="${WARNINGS}WARNING: $*\n"
 474 }
 475
 476 die(){
 477     log "$@"
 478     echo "$error_color$bold_color$@$reset_color"
 479     cat <<EOF
 480
 481 If you think configure made a mistake, make sure you are using the latest
 482 version from Git.  If the latest version fails, report the problem to the
 483 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 484 EOF
 485     if disabled logging; then
 486         cat <<EOF
 487 Rerun configure with logging enabled (do not use --disable-logging), and
 488 include the log this produces with your report.
 489 EOF
 490     else
 491         cat <<EOF
 492 Include the log file "$logfile" produced by configure as this will help
 493 solve the problem.
 494 EOF
 495     fi
 496     exit 1
 497 }
 498
 499 # Avoid locale weirdness, besides we really just want to translate ASCII.
 500 toupper(){
 501     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 502 }
 503
 504 tolower(){
 505     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 506 }
 507
 508 c_escape(){
 509     echo "$*" | sed 's/["\\]/\\\0/g'
 510 }
 511
 512 sh_quote(){
 513     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 514     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 515     echo "$v"
 516 }
 517
 518 cleanws(){
 519     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 520 }
 521
 522 filter(){
 523     pat=$1
 524     shift
 525     for v; do
 526         eval "case $v in $pat) printf '%s ' $v ;; esac"
 527     done
 528 }
 529
 530 filter_out(){
 531     pat=$1
 532     shift
 533     for v; do
 534         eval "case $v in $pat) ;; *) printf '%s ' $v ;; esac"
 535     done
 536 }
 537
 538 map(){
 539     m=$1
 540     shift
 541     for v; do eval $m; done
 542 }
 543
 544 add_suffix(){
 545     suffix=$1
 546     shift
 547     for v; do echo ${v}${suffix}; done
 548 }
 549
 550 set_all(){
 551     value=$1
 552     shift
 553     for var in $*; do
 554         eval $var=$value
 555     done
 556 }
 557
 558 set_weak(){
 559     value=$1
 560     shift
 561     for var; do
 562         eval : \${$var:=$value}
 563     done
 564 }
 565
 566 sanitize_var_name(){
 567     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 568 }
 569
 570 set_safe(){
 571     var=$1
 572     shift
 573     eval $(sanitize_var_name "$var")='$*'
 574 }
 575
 576 get_safe(){
 577     eval echo \$$(sanitize_var_name "$1")
 578 }
 579
 580 pushvar(){
 581     for pvar in $*; do
 582         eval level=\${${pvar}_level:=0}
 583         eval ${pvar}_${level}="\$$pvar"
 584         eval ${pvar}_level=$(($level+1))
 585     done
 586 }
 587
 588 popvar(){
 589     for pvar in $*; do
 590         eval level=\${${pvar}_level:-0}
 591         test $level = 0 && continue
 592         eval level=$(($level-1))
 593         eval $pvar="\${${pvar}_${level}}"
 594         eval ${pvar}_level=$level
 595         eval unset ${pvar}_${level}
 596     done
 597 }
 598
 599 request(){
 600     for var in $*; do
 601         eval ${var}_requested=yes
 602         eval $var=
 603     done
 604 }
 605
 606 enable(){
 607     set_all yes $*
 608 }
 609
 610 disable(){
 611     set_all no $*
 612 }
 613
 614 enable_weak(){
 615     set_weak yes $*
 616 }
 617
 618 disable_weak(){
 619     set_weak no $*
 620 }
 621
 622 enable_safe(){
 623     for var; do
 624         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 625     done
 626 }
 627
 628 disable_safe(){
 629     for var; do
 630         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 631     done
 632 }
 633
 634 do_enable_deep(){
 635     for var; do
 636         enabled $var && continue
 637         eval sel="\$${var}_select"
 638         eval sgs="\$${var}_suggest"
 639         pushvar var sgs
 640         enable_deep $sel
 641         popvar sgs
 642         enable_deep_weak $sgs
 643         popvar var
 644     done
 645 }
 646
 647 enable_deep(){
 648     do_enable_deep $*
 649     enable $*
 650 }
 651
 652 enable_deep_weak(){
 653     for var; do
 654         disabled $var && continue
 655         pushvar var
 656         do_enable_deep $var
 657         popvar var
 658         enable_weak $var
 659     done
 660 }
 661
 662 requested(){
 663     test "${1#!}" = "$1" && op='=' || op=!=
 664     eval test "x\$${1#!}_requested" $op "xyes"
 665 }
 666
 667 enabled(){
 668     test "${1#!}" = "$1" && op='=' || op=!=
 669     eval test "x\$${1#!}" $op "xyes"
 670 }
 671
 672 disabled(){
 673     test "${1#!}" = "$1" && op='=' || op=!=
 674     eval test "x\$${1#!}" $op "xno"
 675 }
 676
 677 enabled_all(){
 678     for opt; do
 679         enabled $opt || return 1
 680     done
 681 }
 682
 683 disabled_all(){
 684     for opt; do
 685         disabled $opt || return 1
 686     done
 687 }
 688
 689 enabled_any(){
 690     for opt; do
 691         enabled $opt && return 0
 692     done
 693 }
 694
 695 disabled_any(){
 696     for opt; do
 697         disabled $opt && return 0
 698     done
 699     return 1
 700 }
 701
 702 set_default(){
 703     for opt; do
 704         eval : \${$opt:=\$${opt}_default}
 705     done
 706 }
 707
 708 is_in(){
 709     value=$1
 710     shift
 711     for var in $*; do
 712         [ $var = $value ] && return 0
 713     done
 714     return 1
 715 }
 716
 717 do_check_deps(){
 718     for cfg; do
 719         cfg="${cfg#!}"
 720         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 721         disabled ${cfg}_checking && continue
 722         enable ${cfg}_checking
 723         append allopts $cfg
 724
 725         eval dep_all="\$${cfg}_deps"
 726         eval dep_any="\$${cfg}_deps_any"
 727         eval dep_sel="\$${cfg}_select"
 728         eval dep_sgs="\$${cfg}_suggest"
 729         eval dep_ifa="\$${cfg}_if"
 730         eval dep_ifn="\$${cfg}_if_any"
 731
 732         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 733         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
 734         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 735
 736         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 737         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 738         enabled_all  $dep_all || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not all dependencies are satisfied: $dep_all"; }
 739         enabled_any  $dep_any || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not any dependency is satisfied: $dep_any"; }
 740         disabled_any $dep_sel && { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some selected dependency is unsatisfied: $dep_sel"; }
 741
 742         if enabled $cfg; then
 743             enable_deep $dep_sel
 744             enable_deep_weak $dep_sgs
 745         fi
 746
 747         disable ${cfg}_checking
 748     done
 749 }
 750
 751 check_deps(){
 752     unset allopts
 753
 754     do_check_deps "$@"
 755
 756     for cfg in $allopts; do
 757         enabled $cfg || continue
 758         eval dep_extralibs="\$${cfg}_extralibs"
 759         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
 760     done
 761 }
 762
 763 print_config(){
 764     pfx=$1
 765     files=$2
 766     shift 2
 767     map 'eval echo "$v \${$v:-no}"' "$@" |
 768     awk "BEGIN { split(\"$files\", files) }
 769         {
 770             c = \"$pfx\" toupper(\$1);
 771             v = \$2;
 772             sub(/yes/, 1, v);
 773             sub(/no/,  0, v);
 774             for (f in files) {
 775                 file = files[f];
 776                 if (file ~ /\\.h\$/) {
 777                     printf(\"#define %s %d\\n\", c, v) >>file;
 778                 } else if (file ~ /\\.asm\$/) {
 779                     printf(\"%%define %s %d\\n\", c, v) >>file;
 780                 } else if (file ~ /\\.mak\$/) {
 781                     n = -v ? \"\" : \"!\";
 782                     printf(\"%s%s=yes\\n\", n, c) >>file;
 783                 } else if (file ~ /\\.texi\$/) {
 784                     pre = -v ? \"\" : \"@c \";
 785                     yesno = \$2;
 786                     c2 = tolower(c);
 787                     gsub(/_/, \"-\", c2);
 788                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 789                 }
 790             }
 791         }"
 792 }
 793
 794 print_enabled(){
 795     suf=$1
 796     shift
 797     for v; do
 798         enabled $v && printf "%s\n" ${v%$suf}
 799     done
 800 }
 801
 802 append(){
 803     var=$1
 804     shift
 805     eval "$var=\"\$$var $*\""
 806 }
 807
 808 prepend(){
 809     var=$1
 810     shift
 811     eval "$var=\"$* \$$var\""
 812 }
 813
 814 unique(){
 815     var=$1
 816     uniq_list=""
 817     for tok in $(eval echo \$$var); do
 818         uniq_list="$(filter_out $tok $uniq_list) $tok"
 819     done
 820     eval "$var=\"${uniq_list}\""
 821 }
 822
 823 add_cppflags(){
 824     append CPPFLAGS "$@"
 825 }
 826
 827 add_cflags(){
 828     append CFLAGS $($cflags_filter "$@")
 829 }
 830
 831 add_cflags_headers(){
 832     append CFLAGS_HEADERS $($cflags_filter "$@")
 833 }
 834
 835 add_cxxflags(){
 836     append CXXFLAGS $($cflags_filter "$@")
 837 }
 838
 839 add_asflags(){
 840     append ASFLAGS $($asflags_filter "$@")
 841 }
 842
 843 add_objcflags(){
 844     append OBJCFLAGS $($objcflags_filter "$@")
 845 }
 846
 847 add_ldflags(){
 848     append LDFLAGS $($ldflags_filter "$@")
 849 }
 850
 851 add_ldexeflags(){
 852     append LDEXEFLAGS $($ldflags_filter "$@")
 853 }
 854
 855 add_ldlibflags(){
 856     append LDLIBFLAGS $($ldflags_filter "$@")
 857 }
 858
 859 add_stripflags(){
 860     append ASMSTRIPFLAGS "$@"
 861 }
 862
 863 add_extralibs(){
 864     prepend extralibs $($ldflags_filter "$@")
 865 }
 866
 867 add_host_cppflags(){
 868     append host_cppflags "$@"
 869 }
 870
 871 add_host_cflags(){
 872     append host_cflags $($host_cflags_filter "$@")
 873 }
 874
 875 add_host_ldflags(){
 876     append host_ldflags $($host_ldflags_filter "$@")
 877 }
 878
 879 add_compat(){
 880     append compat_objs $1
 881     shift
 882     map 'add_cppflags -D$v' "$@"
 883 }
 884
 885 check_cmd(){
 886     log "$@"
 887     "$@" >> $logfile 2>&1
 888 }
 889
 890 check_stat(){
 891     log check_stat "$@"
 892     stat "$1" >> $logfile 2>&1
 893 }
 894
 895 cc_o(){
 896     eval printf '%s\\n' $CC_O
 897 }
 898
 899 cc_e(){
 900     eval printf '%s\\n' $CC_E
 901 }
 902
 903 check_cc(){
 904     log check_cc "$@"
 905     cat > $TMPC
 906     log_file $TMPC
 907     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 908 }
 909
 910 check_cxx(){
 911     log check_cxx "$@"
 912     cat > $TMPCPP
 913     log_file $TMPCPP
 914     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 915 }
 916
 917 check_objcc(){
 918     log check_objcc "$@"
 919     cat > $TMPM
 920     log_file $TMPM
 921     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
 922 }
 923
 924 check_cpp(){
 925     log check_cpp "$@"
 926     cat > $TMPC
 927     log_file $TMPC
 928     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 929 }
 930
 931 as_o(){
 932     eval printf '%s\\n' $AS_O
 933 }
 934
 935 check_as(){
 936     log check_as "$@"
 937     cat > $TMPS
 938     log_file $TMPS
 939     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 940 }
 941
 942 check_inline_asm(){
 943     log check_inline_asm "$@"
 944     name="$1"
 945     code="$2"
 946     shift 2
 947     disable $name
 948     check_cc "$@" <<EOF && enable $name
 949 void foo(void){ __asm__ volatile($code); }
 950 EOF
 951 }
 952
 953 check_inline_asm_flags(){
 954     log check_inline_asm_flags "$@"
 955     name="$1"
 956     code="$2"
 957     flags=''
 958     shift 2
 959     while [ "$1" != "" ]; do
 960       append flags $1
 961       shift
 962     done;
 963     disable $name
 964     cat > $TMPC <<EOF
 965 void foo(void){ __asm__ volatile($code); }
 966 EOF
 967     log_file $TMPC
 968     check_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
 969     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
 970 }
 971
 972 check_insn(){
 973     log check_insn "$@"
 974     check_inline_asm ${1}_inline "\"$2\""
 975     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 976 }
 977
 978 check_yasm(){
 979     log check_yasm "$@"
 980     echo "$1" > $TMPS
 981     log_file $TMPS
 982     shift 1
 983     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
 984 }
 985
 986 ld_o(){
 987     eval printf '%s\\n' $LD_O
 988 }
 989
 990 check_ld(){
 991     log check_ld "$@"
 992     type=$1
 993     shift 1
 994     flags=$(filter_out '-l*|*.so' $@)
 995     libs=$(filter '-l*|*.so' $@)
 996     check_$type $($cflags_filter $flags) || return
 997     flags=$($ldflags_filter $flags)
 998     libs=$($ldflags_filter $libs)
 999     check_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1000 }
1001
1002 print_include(){
1003     hdr=$1
1004     test "${hdr%.h}" = "${hdr}" &&
1005         echo "#include $hdr"    ||
1006         echo "#include <$hdr>"
1007 }
1008
1009 check_code(){
1010     log check_code "$@"
1011     check=$1
1012     headers=$2
1013     code=$3
1014     shift 3
1015     {
1016         for hdr in $headers; do
1017             print_include $hdr
1018         done
1019         echo "int main(void) { $code; return 0; }"
1020     } | check_$check "$@"
1021 }
1022
1023 check_cppflags(){
1024     log check_cppflags "$@"
1025     check_cpp "$@" <<EOF && append CPPFLAGS "$@"
1026 int x;
1027 EOF
1028 }
1029
1030 test_cflags(){
1031     log test_cflags "$@"
1032     set -- $($cflags_filter "$@")
1033     check_cc "$@" <<EOF
1034 int x;
1035 EOF
1036 }
1037
1038 check_cflags(){
1039     log check_cflags "$@"
1040     test_cflags "$@" && add_cflags "$@"
1041 }
1042
1043 check_cxxflags(){
1044     log check_cxxflags "$@"
1045     set -- $($cflags_filter "$@")
1046     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
1047 int x;
1048 EOF
1049 }
1050
1051 test_objcflags(){
1052     log test_objcflags "$@"
1053     set -- $($objcflags_filter "$@")
1054     check_objcc "$@" <<EOF
1055 int x;
1056 EOF
1057 }
1058
1059 check_objcflags(){
1060     log check_objcflags "$@"
1061     test_objcflags "$@" && add_objcflags "$@"
1062 }
1063
1064 test_ldflags(){
1065     log test_ldflags "$@"
1066     check_ld "cc" "$@" <<EOF
1067 int main(void){ return 0; }
1068 EOF
1069 }
1070
1071 check_ldflags(){
1072     log check_ldflags "$@"
1073     test_ldflags "$@" && add_ldflags "$@"
1074 }
1075
1076 test_stripflags(){
1077     log test_stripflags "$@"
1078     # call check_cc to get a fresh TMPO
1079     check_cc <<EOF
1080 int main(void) { return 0; }
1081 EOF
1082     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1083 }
1084
1085 check_stripflags(){
1086     log check_stripflags "$@"
1087     test_stripflags "$@" && add_stripflags "$@"
1088 }
1089
1090 check_header(){
1091     log check_header "$@"
1092     header=$1
1093     shift
1094     disable_safe $header
1095     check_cpp "$@" <<EOF && enable_safe $header
1096 #include <$header>
1097 int x;
1098 EOF
1099 }
1100
1101 check_header_objcc(){
1102     log check_header_objcc "$@"
1103     rm -f -- "$TMPO"
1104     header=$1
1105     shift
1106     disable_safe $header
1107     {
1108        echo "#include <$header>"
1109        echo "int main(void) { return 0; }"
1110     } | check_objcc && check_stat "$TMPO" && enable_safe $headers
1111 }
1112
1113 check_func(){
1114     log check_func "$@"
1115     func=$1
1116     shift
1117     disable $func
1118     check_ld "cc" "$@" <<EOF && enable $func
1119 extern int $func();
1120 int main(void){ $func(); }
1121 EOF
1122 }
1123
1124 check_complexfunc(){
1125     log check_complexfunc "$@"
1126     func=$1
1127     narg=$2
1128     shift 2
1129     test $narg = 2 && args="f, g" || args="f * I"
1130     disable $func
1131     check_ld "cc" "$@" <<EOF && enable $func
1132 #include <complex.h>
1133 #include <math.h>
1134 float foo(complex float f, complex float g) { return $func($args); }
1135 int main(void){ return (int) foo; }
1136 EOF
1137 }
1138
1139 check_mathfunc(){
1140     log check_mathfunc "$@"
1141     func=$1
1142     narg=$2
1143     shift 2
1144     test $narg = 2 && args="f, g" || args="f"
1145     disable $func
1146     check_ld "cc" "$@" <<EOF && enable $func
1147 #include <math.h>
1148 float foo(float f, float g) { return $func($args); }
1149 int main(void){ return (int) foo; }
1150 EOF
1151 }
1152
1153 check_func_headers(){
1154     log check_func_headers "$@"
1155     headers=$1
1156     funcs=$2
1157     shift 2
1158     {
1159         for hdr in $headers; do
1160             print_include $hdr
1161         done
1162         echo "#include <stdint.h>"
1163         for func in $funcs; do
1164             echo "long check_$func(void) { return (long) $func; }"
1165         done
1166         echo "int main(void) { int ret = 0;"
1167         # LTO could optimize out the test functions without this
1168         for func in $funcs; do
1169             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1170         done
1171         echo "return ret; }"
1172     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1173 }
1174
1175 check_class_headers_cpp(){
1176     log check_class_headers_cpp "$@"
1177     headers=$1
1178     classes=$2
1179     shift 2
1180     {
1181         for hdr in $headers; do
1182             echo "#include <$hdr>"
1183         done
1184         echo "int main(void) { "
1185         i=1
1186         for class in $classes; do
1187             echo "$class obj$i;"
1188             i=$(expr $i + 1)
1189         done
1190         echo "return 0; }"
1191     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1192 }
1193
1194 check_cpp_condition(){
1195     log check_cpp_condition "$@"
1196     header=$1
1197     condition=$2
1198     shift 2
1199     check_cpp "$@" <<EOF
1200 #include <$header>
1201 #if !($condition)
1202 #error "unsatisfied condition: $condition"
1203 #endif
1204 EOF
1205 }
1206
1207 test_cflags_cc(){
1208     log test_cflags_cc "$@"
1209     flags=$1
1210     header=$2
1211     condition=$3
1212     shift 3
1213     set -- $($cflags_filter "$flags")
1214     check_cc "$@" <<EOF
1215 #include <$header>
1216 #if !($condition)
1217 #error "unsatisfied condition: $condition"
1218 #endif
1219 EOF
1220 }
1221
1222 check_lib(){
1223     log check_lib "$@"
1224     headers="$1"
1225     funcs="$2"
1226     shift 2
1227     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1228 }
1229
1230 check_lib_cpp(){
1231     log check_lib_cpp "$@"
1232     headers="$1"
1233     classes="$2"
1234     shift 2
1235     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1236 }
1237
1238 check_pkg_config(){
1239     log check_pkg_config "$@"
1240     pkg_version="$1"
1241     pkg="${1%% *}"
1242     headers="$2"
1243     funcs="$3"
1244     shift 3
1245     check_cmd $pkg_config --exists --print-errors $pkg_version || return
1246     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1247     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1248     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1249         set_safe "${pkg}_cflags" $pkg_cflags   &&
1250         set_safe "${pkg}_libs"   $pkg_libs
1251 }
1252
1253 check_exec(){
1254     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1255 }
1256
1257 check_exec_crash(){
1258     log check_exec_crash "$@"
1259     code=$(cat)
1260
1261     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1262     # are safe but may not be available everywhere.  Thus we use
1263     # raise(SIGTERM) instead.  The check is run in a subshell so we
1264     # can redirect the "Terminated" message from the shell.  SIGBUS
1265     # is not defined by standard C so it is used conditionally.
1266
1267     (check_exec "$@") >> $logfile 2>&1 <<EOF
1268 #include <signal.h>
1269 static void sighandler(int sig){
1270     raise(SIGTERM);
1271 }
1272 int foo(void){
1273     $code
1274 }
1275 int (*func_ptr)(void) = foo;
1276 int main(void){
1277     signal(SIGILL, sighandler);
1278     signal(SIGFPE, sighandler);
1279     signal(SIGSEGV, sighandler);
1280 #ifdef SIGBUS
1281     signal(SIGBUS, sighandler);
1282 #endif
1283     return func_ptr();
1284 }
1285 EOF
1286 }
1287
1288 check_type(){
1289     log check_type "$@"
1290     headers=$1
1291     type=$2
1292     shift 2
1293     disable_safe "$type"
1294     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1295 }
1296
1297 check_struct(){
1298     log check_struct "$@"
1299     headers=$1
1300     struct=$2
1301     member=$3
1302     shift 3
1303     disable_safe "${struct}_${member}"
1304     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1305         enable_safe "${struct}_${member}"
1306 }
1307
1308 check_builtin(){
1309     log check_builtin "$@"
1310     name=$1
1311     headers=$2
1312     builtin=$3
1313     shift 3
1314     disable "$name"
1315     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1316 }
1317
1318 check_compile_assert(){
1319     log check_compile_assert "$@"
1320     name=$1
1321     headers=$2
1322     condition=$3
1323     shift 3
1324     disable "$name"
1325     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1326 }
1327
1328 require(){
1329     log require "$@"
1330     name_version="$1"
1331     headers="$2"
1332     func="$3"
1333     shift 3
1334     check_lib "$headers" $func "$@" || die "ERROR: $name_version not found"
1335 }
1336
1337 require_cpp(){
1338     name="$1"
1339     headers="$2"
1340     classes="$3"
1341     shift 3
1342     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1343 }
1344
1345 use_pkg_config(){
1346     log use_pkg_config "$@"
1347     pkg="$1"
1348     check_pkg_config "$@" || return 1
1349     add_cflags    $(get_safe "${pkg}_cflags")
1350     add_extralibs $(get_safe "${pkg}_libs")
1351 }
1352
1353 require_pkg_config(){
1354     use_pkg_config "$@" || die "ERROR: $pkg not found using pkg-config$pkg_config_fail_message"
1355 }
1356
1357 require_libfreetype(){
1358     log require_libfreetype "$@"
1359     pkg="freetype2"
1360     check_cmd $pkg_config --exists --print-errors $pkg \
1361       || die "ERROR: $pkg not found"
1362     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1363     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1364     {
1365         echo "#include <ft2build.h>"
1366         echo "#include FT_FREETYPE_H"
1367         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1368         echo "int main(void) { return 0; }"
1369     } | check_ld "cc" $pkg_cflags $pkg_libs \
1370       && set_safe "${pkg}_cflags" $pkg_cflags \
1371       && set_safe "${pkg}_libs"   $pkg_libs \
1372       || die "ERROR: $pkg not found"
1373     add_cflags    $(get_safe "${pkg}_cflags")
1374     add_extralibs $(get_safe "${pkg}_libs")
1375 }
1376
1377 hostcc_e(){
1378     eval printf '%s\\n' $HOSTCC_E
1379 }
1380
1381 hostcc_o(){
1382     eval printf '%s\\n' $HOSTCC_O
1383 }
1384
1385 check_host_cc(){
1386     log check_host_cc "$@"
1387     cat > $TMPC
1388     log_file $TMPC
1389     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1390 }
1391
1392 check_host_cpp(){
1393     log check_host_cpp "$@"
1394     cat > $TMPC
1395     log_file $TMPC
1396     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1397 }
1398
1399 check_host_cppflags(){
1400     log check_host_cppflags "$@"
1401     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1402 int x;
1403 EOF
1404 }
1405
1406 check_host_cflags(){
1407     log check_host_cflags "$@"
1408     set -- $($host_cflags_filter "$@")
1409     check_host_cc "$@" <<EOF && append host_cflags "$@"
1410 int x;
1411 EOF
1412 }
1413
1414 check_host_cpp_condition(){
1415     log check_host_cpp_condition "$@"
1416     header=$1
1417     condition=$2
1418     shift 2
1419     check_host_cpp "$@" <<EOF
1420 #include <$header>
1421 #if !($condition)
1422 #error "unsatisfied condition: $condition"
1423 #endif
1424 EOF
1425 }
1426
1427 cp_if_changed(){
1428     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1429     mkdir -p "$(dirname $2)"
1430     cp -f "$1" "$2"
1431 }
1432
1433 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1434 # system-dependent things.
1435
1436 AVCODEC_COMPONENTS="
1437     bsfs
1438     decoders
1439     encoders
1440     hwaccels
1441     parsers
1442 "
1443
1444 AVDEVICE_COMPONENTS="
1445     indevs
1446     outdevs
1447 "
1448 AVFILTER_COMPONENTS="
1449     filters
1450 "
1451 AVFORMAT_COMPONENTS="
1452     demuxers
1453     muxers
1454     protocols
1455 "
1456
1457 AVRESAMPLE_COMPONENTS=""
1458 AVUTIL_COMPONENTS=""
1459
1460 COMPONENT_LIST="
1461     $AVCODEC_COMPONENTS
1462     $AVDEVICE_COMPONENTS
1463     $AVFILTER_COMPONENTS
1464     $AVFORMAT_COMPONENTS
1465     $AVRESAMPLE_COMPONENTS
1466     $AVUTIL_COMPONENTS
1467 "
1468
1469 EXAMPLE_LIST="
1470     avio_dir_cmd_example
1471     avio_reading_example
1472     decode_audio_example
1473     decode_video_example
1474     demuxing_decoding_example
1475     encode_audio_example
1476     encode_video_example
1477     extract_mvs_example
1478     filter_audio_example
1479     filtering_audio_example
1480     filtering_video_example
1481     http_multiclient_example
1482     metadata_example
1483     muxing_example
1484     qsvdec_example
1485     remuxing_example
1486     resampling_audio_example
1487     scaling_video_example
1488     transcode_aac_example
1489     transcoding_example
1490 "
1491 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1492     bzlib
1493     iconv
1494     libxcb
1495     libxcb_shm
1496     libxcb_shape
1497     libxcb_xfixes
1498     lzma
1499     schannel
1500     sdl
1501     sdl2
1502     securetransport
1503     xlib
1504     zlib
1505 "
1506
1507 EXTERNAL_LIBRARY_GPL_LIST="
1508     avisynth
1509     frei0r
1510     libcdio
1511     librubberband
1512     libvidstab
1513     libx264
1514     libx265
1515     libxavs
1516     libxvid
1517 "
1518
1519 EXTERNAL_LIBRARY_NONFREE_LIST="
1520     decklink
1521     libfdk_aac
1522     openssl
1523 "
1524
1525 EXTERNAL_LIBRARY_VERSION3_LIST="
1526     gmp
1527     libopencore_amrnb
1528     libopencore_amrwb
1529     libvo_amrwbenc
1530 "
1531
1532 EXTERNAL_LIBRARY_GPLV3_LIST="
1533     libsmbclient
1534 "
1535
1536 EXTERNAL_LIBRARY_LIST="
1537     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1538     $EXTERNAL_LIBRARY_GPL_LIST
1539     $EXTERNAL_LIBRARY_NONFREE_LIST
1540     $EXTERNAL_LIBRARY_VERSION3_LIST
1541     $EXTERNAL_LIBRARY_GPLV3_LIST
1542     chromaprint
1543     crystalhd
1544     gcrypt
1545     gnutls
1546     jni
1547     ladspa
1548     libass
1549     libbluray
1550     libbs2b
1551     libcaca
1552     libcelt
1553     libdc1394
1554     libflite
1555     libfontconfig
1556     libfreetype
1557     libfribidi
1558     libgme
1559     libgsm
1560     libiec61883
1561     libilbc
1562     libkvazaar
1563     libmodplug
1564     libmp3lame
1565     libnut
1566     libopencv
1567     libopenh264
1568     libopenjpeg
1569     libopenmpt
1570     libopus
1571     libpulse
1572     librtmp
1573     libschroedinger
1574     libshine
1575     libsmbclient
1576     libsnappy
1577     libsoxr
1578     libspeex
1579     libssh
1580     libtesseract
1581     libtheora
1582     libtwolame
1583     libv4l2
1584     libvorbis
1585     libvpx
1586     libwavpack
1587     libwebp
1588     libzimg
1589     libzmq
1590     libzvbi
1591     mediacodec
1592     netcdf
1593     openal
1594     opencl
1595     opengl
1596     videotoolbox
1597 "
1598 HWACCEL_AUTODETECT_LIBRARY_LIST="
1599     audiotoolbox
1600     cuda
1601     cuvid
1602     d3d11va
1603     dxva2
1604     nvenc
1605     vaapi
1606     vda
1607     vdpau
1608     videotoolbox_hwaccel
1609     xvmc
1610 "
1611
1612 HWACCEL_LIBRARY_NONFREE_LIST="
1613     libnpp
1614 "
1615
1616 HWACCEL_LIBRARY_LIST="
1617     $HWACCEL_AUTODETECT_LIBRARY_LIST
1618     $HWACCEL_LIBRARY_NONFREE_LIST
1619     libmfx
1620     mmal
1621     omx
1622 "
1623
1624 DOCUMENT_LIST="
1625     doc
1626     htmlpages
1627     manpages
1628     podpages
1629     txtpages
1630 "
1631
1632 FEATURE_LIST="
1633     ftrapv
1634     gray
1635     hardcoded_tables
1636     omx_rpi
1637     runtime_cpudetect
1638     safe_bitstream_reader
1639     shared
1640     small
1641     static
1642     swscale_alpha
1643 "
1644
1645 LIBRARY_LIST="
1646     avcodec
1647     avdevice
1648     avfilter
1649     avformat
1650     avresample
1651     avutil
1652     postproc
1653     swresample
1654     swscale
1655 "
1656
1657 LICENSE_LIST="
1658     gpl
1659     nonfree
1660     version3
1661 "
1662
1663 PROGRAM_LIST="
1664     ffplay
1665     ffprobe
1666     ffserver
1667     ffmpeg
1668 "
1669
1670 SUBSYSTEM_LIST="
1671     dct
1672     dwt
1673     error_resilience
1674     faan
1675     fast_unaligned
1676     fft
1677     lsp
1678     lzo
1679     mdct
1680     pixelutils
1681     network
1682     rdft
1683 "
1684
1685 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1686 CONFIG_LIST="
1687     $DOCUMENT_LIST
1688     $EXAMPLE_LIST
1689     $EXTERNAL_LIBRARY_LIST
1690     $HWACCEL_LIBRARY_LIST
1691     $FEATURE_LIST
1692     $LICENSE_LIST
1693     $LIBRARY_LIST
1694     $PROGRAM_LIST
1695     $SUBSYSTEM_LIST
1696     fontconfig
1697     memory_poisoning
1698     neon_clobber_test
1699     pic
1700     raise_major
1701     thumb
1702     valgrind_backtrace
1703     xmm_clobber_test
1704     $COMPONENT_LIST
1705 "
1706
1707 THREADS_LIST="
1708     pthreads
1709     os2threads
1710     w32threads
1711 "
1712
1713 ATOMICS_LIST="
1714     atomics_gcc
1715     atomics_suncc
1716     atomics_win32
1717 "
1718
1719 AUTODETECT_LIBS="
1720     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1721     $HWACCEL_AUTODETECT_LIBRARY_LIST
1722     $THREADS_LIST
1723 "
1724
1725 ARCH_LIST="
1726     aarch64
1727     alpha
1728     arm
1729     avr32
1730     avr32_ap
1731     avr32_uc
1732     bfin
1733     ia64
1734     m68k
1735     mips
1736     mips64
1737     parisc
1738     ppc
1739     ppc64
1740     s390
1741     sh4
1742     sparc
1743     sparc64
1744     tilegx
1745     tilepro
1746     tomi
1747     x86
1748     x86_32
1749     x86_64
1750 "
1751
1752 ARCH_EXT_LIST_ARM="
1753     armv5te
1754     armv6
1755     armv6t2
1756     armv8
1757     neon
1758     vfp
1759     vfpv3
1760     setend
1761 "
1762
1763 ARCH_EXT_LIST_MIPS="
1764     mipsfpu
1765     mips32r2
1766     mips32r5
1767     mips64r2
1768     mips32r6
1769     mips64r6
1770     mipsdsp
1771     mipsdspr2
1772     msa
1773 "
1774
1775 ARCH_EXT_LIST_LOONGSON="
1776     loongson2
1777     loongson3
1778     mmi
1779 "
1780
1781 ARCH_EXT_LIST_X86_SIMD="
1782     aesni
1783     amd3dnow
1784     amd3dnowext
1785     avx
1786     avx2
1787     fma3
1788     fma4
1789     mmx
1790     mmxext
1791     sse
1792     sse2
1793     sse3
1794     sse4
1795     sse42
1796     ssse3
1797     xop
1798 "
1799
1800 ARCH_EXT_LIST_PPC="
1801     altivec
1802     dcbzl
1803     ldbrx
1804     power8
1805     ppc4xx
1806     vsx
1807 "
1808
1809 ARCH_EXT_LIST_X86="
1810     $ARCH_EXT_LIST_X86_SIMD
1811     cpunop
1812     i686
1813 "
1814
1815 ARCH_EXT_LIST="
1816     $ARCH_EXT_LIST_ARM
1817     $ARCH_EXT_LIST_PPC
1818     $ARCH_EXT_LIST_X86
1819     $ARCH_EXT_LIST_MIPS
1820     $ARCH_EXT_LIST_LOONGSON
1821 "
1822
1823 ARCH_FEATURES="
1824     aligned_stack
1825     fast_64bit
1826     fast_clz
1827     fast_cmov
1828     local_aligned_8
1829     local_aligned_16
1830     local_aligned_32
1831     simd_align_16
1832     simd_align_32
1833 "
1834
1835 BUILTIN_LIST="
1836     atomic_cas_ptr
1837     machine_rw_barrier
1838     MemoryBarrier
1839     mm_empty
1840     rdtsc
1841     sarestart
1842     sem_timedwait
1843     sync_val_compare_and_swap
1844 "
1845 HAVE_LIST_CMDLINE="
1846     inline_asm
1847     symver
1848     yasm
1849 "
1850
1851 HAVE_LIST_PUB="
1852     bigendian
1853     fast_unaligned
1854 "
1855
1856 HEADERS_LIST="
1857     alsa_asoundlib_h
1858     altivec_h
1859     arpa_inet_h
1860     asm_types_h
1861     cdio_paranoia_h
1862     cdio_paranoia_paranoia_h
1863     cuda_h
1864     dispatch_dispatch_h
1865     dev_bktr_ioctl_bt848_h
1866     dev_bktr_ioctl_meteor_h
1867     dev_ic_bt8xx_h
1868     dev_video_bktr_ioctl_bt848_h
1869     dev_video_meteor_ioctl_meteor_h
1870     direct_h
1871     dirent_h
1872     dlfcn_h
1873     d3d11_h
1874     dxva_h
1875     ES2_gl_h
1876     gsm_h
1877     io_h
1878     mach_mach_time_h
1879     machine_ioctl_bt848_h
1880     machine_ioctl_meteor_h
1881     malloc_h
1882     opencv2_core_core_c_h
1883     openjpeg_2_1_openjpeg_h
1884     openjpeg_2_0_openjpeg_h
1885     openjpeg_1_5_openjpeg_h
1886     OpenGL_gl3_h
1887     poll_h
1888     sndio_h
1889     soundcard_h
1890     stdatomic_h
1891     sys_mman_h
1892     sys_param_h
1893     sys_resource_h
1894     sys_select_h
1895     sys_soundcard_h
1896     sys_time_h
1897     sys_un_h
1898     sys_videoio_h
1899     termios_h
1900     udplite_h
1901     unistd_h
1902     valgrind_valgrind_h
1903     windows_h
1904     winsock2_h
1905 "
1906
1907 INTRINSICS_LIST="
1908     intrinsics_neon
1909 "
1910
1911 COMPLEX_FUNCS="
1912     cabs
1913     cexp
1914 "
1915
1916 MATH_FUNCS="
1917     atanf
1918     atan2f
1919     cbrt
1920     cbrtf
1921     copysign
1922     cosf
1923     erf
1924     exp2
1925     exp2f
1926     expf
1927     hypot
1928     isfinite
1929     isinf
1930     isnan
1931     ldexpf
1932     llrint
1933     llrintf
1934     log2
1935     log2f
1936     log10f
1937     lrint
1938     lrintf
1939     powf
1940     rint
1941     round
1942     roundf
1943     sinf
1944     trunc
1945     truncf
1946 "
1947
1948 SYSTEM_FUNCS="
1949     access
1950     aligned_malloc
1951     arc4random
1952     clock_gettime
1953     closesocket
1954     CommandLineToArgvW
1955     CoTaskMemFree
1956     CryptGenRandom
1957     dlopen
1958     fcntl
1959     flt_lim
1960     fork
1961     getaddrinfo
1962     gethrtime
1963     getopt
1964     GetProcessAffinityMask
1965     GetProcessMemoryInfo
1966     GetProcessTimes
1967     getrusage
1968     GetSystemTimeAsFileTime
1969     gettimeofday
1970     glob
1971     glXGetProcAddress
1972     gmtime_r
1973     inet_aton
1974     isatty
1975     jack_port_get_latency_range
1976     kbhit
1977     LoadLibrary
1978     localtime_r
1979     lstat
1980     lzo1x_999_compress
1981     mach_absolute_time
1982     MapViewOfFile
1983     memalign
1984     mkstemp
1985     mmap
1986     mprotect
1987     nanosleep
1988     PeekNamedPipe
1989     posix_memalign
1990     pthread_cancel
1991     sched_getaffinity
1992     SetConsoleTextAttribute
1993     SetConsoleCtrlHandler
1994     setmode
1995     setrlimit
1996     Sleep
1997     strerror_r
1998     sysconf
1999     sysctl
2000     usleep
2001     UTGetOSTypeFromString
2002     VirtualAlloc
2003     wglGetProcAddress
2004 "
2005
2006 TOOLCHAIN_FEATURES="
2007     as_dn_directive
2008     as_fpu_directive
2009     as_func
2010     as_object_arch
2011     asm_mod_q
2012     attribute_may_alias
2013     attribute_packed
2014     ebp_available
2015     ebx_available
2016     gnu_as
2017     gnu_windres
2018     ibm_asm
2019     inline_asm_direct_symbol_refs
2020     inline_asm_labels
2021     inline_asm_nonlocal_labels
2022     pragma_deprecated
2023     rsync_contimeout
2024     symver_asm_label
2025     symver_gnu_asm
2026     vfp_args
2027     xform_asm
2028     xmm_clobbers
2029 "
2030
2031 TYPES_LIST="
2032     CONDITION_VARIABLE_Ptr
2033     socklen_t
2034     struct_addrinfo
2035     struct_group_source_req
2036     struct_ip_mreq_source
2037     struct_ipv6_mreq
2038     struct_msghdr_msg_flags
2039     struct_pollfd
2040     struct_rusage_ru_maxrss
2041     struct_sctp_event_subscribe
2042     struct_sockaddr_in6
2043     struct_sockaddr_sa_len
2044     struct_sockaddr_storage
2045     struct_stat_st_mtim_tv_nsec
2046     struct_v4l2_frmivalenum_discrete
2047 "
2048
2049 HAVE_LIST="
2050     $ARCH_EXT_LIST
2051     $(add_suffix _external $ARCH_EXT_LIST)
2052     $(add_suffix _inline   $ARCH_EXT_LIST)
2053     $ARCH_FEATURES
2054     $ATOMICS_LIST
2055     $BUILTIN_LIST
2056     $COMPLEX_FUNCS
2057     $HAVE_LIST_CMDLINE
2058     $HAVE_LIST_PUB
2059     $HEADERS_LIST
2060     $INTRINSICS_LIST
2061     $MATH_FUNCS
2062     $SYSTEM_FUNCS
2063     $THREADS_LIST
2064     $TOOLCHAIN_FEATURES
2065     $TYPES_LIST
2066     atomics_native
2067     dos_paths
2068     dxva2_lib
2069     dxva2api_cobj
2070     libc_msvcrt
2071     makeinfo
2072     makeinfo_html
2073     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2074     perl
2075     pod2man
2076     sdl2
2077     section_data_rel_ro
2078     texi2html
2079     threads
2080     vaapi_drm
2081     vaapi_x11
2082     vdpau_x11
2083     winrt
2084 "
2085
2086 # options emitted with CONFIG_ prefix but not available on the command line
2087 CONFIG_EXTRA="
2088     aandcttables
2089     ac3dsp
2090     audio_frame_queue
2091     audiodsp
2092     blockdsp
2093     bswapdsp
2094     cabac
2095     dirac_parse
2096     dvprofile
2097     exif
2098     faandct
2099     faanidct
2100     fdctdsp
2101     flacdsp
2102     fmtconvert
2103     frame_thread_encoder
2104     g722dsp
2105     golomb
2106     gplv3
2107     h263dsp
2108     h264chroma
2109     h264dsp
2110     h264parse
2111     h264pred
2112     h264qpel
2113     hevcparse
2114     hpeldsp
2115     huffman
2116     huffyuvdsp
2117     huffyuvencdsp
2118     idctdsp
2119     iirfilter
2120     mdct15
2121     intrax8
2122     iso_media
2123     ividsp
2124     jpegtables
2125     lgplv3
2126     libx262
2127     llauddsp
2128     llviddsp
2129     llvidencdsp
2130     lpc
2131     lzf
2132     me_cmp
2133     mpeg_er
2134     mpegaudio
2135     mpegaudiodsp
2136     mpegaudioheader
2137     mpegvideo
2138     mpegvideoenc
2139     mss34dsp
2140     pixblockdsp
2141     qpeldsp
2142     qsv
2143     qsvdec
2144     qsvenc
2145     rangecoder
2146     riffdec
2147     riffenc
2148     rtpdec
2149     rtpenc_chain
2150     rv34dsp
2151     sinewin
2152     snappy
2153     srtp
2154     startcode
2155     texturedsp
2156     texturedspenc
2157     tpeldsp
2158     vaapi_encode
2159     vc1dsp
2160     videodsp
2161     vp3dsp
2162     vp56dsp
2163     vp8dsp
2164     vt_bt2020
2165     wma_freqs
2166     wmv2dsp
2167 "
2168
2169 CMDLINE_SELECT="
2170     $ARCH_EXT_LIST
2171     $CONFIG_LIST
2172     $HAVE_LIST_CMDLINE
2173     $THREADS_LIST
2174     asm
2175     cross_compile
2176     debug
2177     extra_warnings
2178     logging
2179     lto
2180     optimizations
2181     rpath
2182     stripping
2183 "
2184
2185 PATHS_LIST="
2186     bindir
2187     datadir
2188     docdir
2189     incdir
2190     libdir
2191     mandir
2192     pkgconfigdir
2193     prefix
2194     shlibdir
2195     install_name_dir
2196 "
2197
2198 CMDLINE_SET="
2199     $PATHS_LIST
2200     ar
2201     arch
2202     as
2203     assert_level
2204     build_suffix
2205     cc
2206     objcc
2207     cpu
2208     cross_prefix
2209     custom_allocator
2210     cxx
2211     dep_cc
2212     doxygen
2213     env
2214     extra_version
2215     gas
2216     host_cc
2217     host_cflags
2218     host_ld
2219     host_ldflags
2220     host_libs
2221     host_os
2222     install
2223     ld
2224     ln_s
2225     logfile
2226     malloc_prefix
2227     nm
2228     optflags
2229     pkg_config
2230     pkg_config_flags
2231     progs_suffix
2232     random_seed
2233     ranlib
2234     samples
2235     strip
2236     sws_max_filter_size
2237     sysinclude
2238     sysroot
2239     target_exec
2240     target_os
2241     target_path
2242     target_samples
2243     tempprefix
2244     toolchain
2245     valgrind
2246     yasmexe
2247 "
2248
2249 CMDLINE_APPEND="
2250     extra_cflags
2251     extra_cxxflags
2252     extra_objcflags
2253     host_cppflags
2254 "
2255
2256 # code dependency declarations
2257
2258 # architecture extensions
2259
2260 armv5te_deps="arm"
2261 armv6_deps="arm"
2262 armv6t2_deps="arm"
2263 armv8_deps="aarch64"
2264 neon_deps_any="aarch64 arm"
2265 intrinsics_neon_deps="neon"
2266 vfp_deps_any="aarch64 arm"
2267 vfpv3_deps="vfp"
2268 setend_deps="arm"
2269
2270 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2271
2272 loongson2_deps="mips"
2273 loongson3_deps="mips"
2274 mipsfpu_deps="mips"
2275 mipsdsp_deps="mips"
2276 mipsdspr2_deps="mips"
2277 mips32r2_deps="mips"
2278 mips32r5_deps="mips"
2279 mips32r6_deps="mips"
2280 mips64r2_deps="mips"
2281 mips64r6_deps="mips"
2282 msa_deps="mipsfpu"
2283 mmi_deps="mips"
2284
2285 altivec_deps="ppc"
2286 dcbzl_deps="ppc"
2287 ldbrx_deps="ppc"
2288 ppc4xx_deps="ppc"
2289 vsx_deps="altivec"
2290 power8_deps="vsx"
2291
2292 cpunop_deps="i686"
2293 x86_64_select="i686"
2294 x86_64_suggest="fast_cmov"
2295
2296 amd3dnow_deps="mmx"
2297 amd3dnowext_deps="amd3dnow"
2298 i686_deps="x86"
2299 mmx_deps="x86"
2300 mmxext_deps="mmx"
2301 sse_deps="mmxext"
2302 sse2_deps="sse"
2303 sse3_deps="sse2"
2304 ssse3_deps="sse3"
2305 sse4_deps="ssse3"
2306 sse42_deps="sse4"
2307 aesni_deps="sse42"
2308 avx_deps="sse42"
2309 xop_deps="avx"
2310 fma3_deps="avx"
2311 fma4_deps="avx"
2312 avx2_deps="avx"
2313
2314 mmx_external_deps="yasm"
2315 mmx_inline_deps="inline_asm"
2316 mmx_suggest="mmx_external mmx_inline"
2317
2318 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2319     eval dep=\$${ext}_deps
2320     eval ${ext}_external_deps='"${dep}_external"'
2321     eval ${ext}_inline_deps='"${dep}_inline"'
2322     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2323 done
2324
2325 aligned_stack_if_any="aarch64 ppc x86"
2326 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2327 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2328 fast_unaligned_if_any="aarch64 ppc x86"
2329 simd_align_16_if_any="altivec neon sse"
2330 simd_align_32_if_any="avx"
2331
2332 # system capabilities
2333 symver_if_any="symver_asm_label symver_gnu_asm"
2334 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
2335
2336 # threading support
2337 atomics_gcc_if="sync_val_compare_and_swap"
2338 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2339 atomics_win32_if="MemoryBarrier"
2340 atomics_native_if_any="$ATOMICS_LIST"
2341 w32threads_deps="atomics_native"
2342 threads_if_any="$THREADS_LIST"
2343
2344 # subsystems
2345 dct_select="rdft"
2346 dirac_parse_select="golomb"
2347 error_resilience_select="me_cmp"
2348 faandct_deps="faan fdctdsp"
2349 faanidct_deps="faan idctdsp"
2350 h264dsp_select="startcode"
2351 hevcparse_select="golomb"
2352 frame_thread_encoder_deps="encoders threads"
2353 intrax8_select="blockdsp idctdsp"
2354 mdct_select="fft"
2355 mdct15_select="fft"
2356 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2357 mpeg_er_select="error_resilience"
2358 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2359 mpegaudiodsp_select="dct"
2360 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2361 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2362 vc1dsp_select="h264chroma qpeldsp startcode"
2363 rdft_select="fft"
2364
2365 # decoders / encoders
2366 aac_decoder_select="mdct15 mdct sinewin"
2367 aac_fixed_decoder_select="mdct sinewin"
2368 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2369 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2370 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2371 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2372 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2373 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2374 adpcm_g722_decoder_select="g722dsp"
2375 adpcm_g722_encoder_select="g722dsp"
2376 aic_decoder_select="golomb idctdsp"
2377 alac_encoder_select="lpc"
2378 als_decoder_select="bswapdsp"
2379 amrnb_decoder_select="lsp"
2380 amrwb_decoder_select="lsp"
2381 amv_decoder_select="sp5x_decoder exif"
2382 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2383 ape_decoder_select="bswapdsp llauddsp"
2384 apng_decoder_select="zlib"
2385 apng_encoder_select="llvidencdsp zlib"
2386 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2387 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2388 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2389 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2390 atrac1_decoder_select="mdct sinewin"
2391 atrac3_decoder_select="mdct"
2392 atrac3p_decoder_select="mdct sinewin"
2393 avrn_decoder_select="exif jpegtables"
2394 bink_decoder_select="blockdsp hpeldsp"
2395 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2396 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2397 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2398 cllc_decoder_select="bswapdsp"
2399 comfortnoise_encoder_select="lpc"
2400 cook_decoder_select="audiodsp mdct sinewin"
2401 cscd_decoder_select="lzo"
2402 cscd_decoder_suggest="zlib"
2403 dca_decoder_select="mdct"
2404 dds_decoder_select="texturedsp"
2405 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2406 dnxhd_decoder_select="blockdsp idctdsp"
2407 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2408 dvvideo_decoder_select="dvprofile idctdsp"
2409 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2410 dxa_decoder_select="zlib"
2411 dxv_decoder_select="lzf texturedsp"
2412 eac3_decoder_select="ac3_decoder"
2413 eac3_encoder_select="ac3_encoder"
2414 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2415 eatgq_decoder_select="aandcttables"
2416 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2417 exr_decoder_select="zlib"
2418 ffv1_decoder_select="rangecoder"
2419 ffv1_encoder_select="rangecoder"
2420 ffvhuff_decoder_select="huffyuv_decoder"
2421 ffvhuff_encoder_select="huffyuv_encoder"
2422 fic_decoder_select="golomb"
2423 flac_decoder_select="flacdsp"
2424 flac_encoder_select="bswapdsp flacdsp lpc"
2425 flashsv2_decoder_select="zlib"
2426 flashsv2_encoder_select="zlib"
2427 flashsv_decoder_select="zlib"
2428 flashsv_encoder_select="zlib"
2429 flv_decoder_select="h263_decoder"
2430 flv_encoder_select="h263_encoder"
2431 fourxm_decoder_select="blockdsp bswapdsp"
2432 fraps_decoder_select="bswapdsp huffman"
2433 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2434 g729_decoder_select="audiodsp"
2435 h261_decoder_select="mpegvideo"
2436 h261_encoder_select="aandcttables mpegvideoenc"
2437 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2438 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2439 h263i_decoder_select="h263_decoder"
2440 h263p_decoder_select="h263_decoder"
2441 h263p_encoder_select="h263_encoder"
2442 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2443 h264_decoder_suggest="error_resilience"
2444 hap_decoder_select="snappy texturedsp"
2445 hap_encoder_deps="libsnappy"
2446 hap_encoder_select="texturedspenc"
2447 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2448 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2449 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2450 iac_decoder_select="imc_decoder"
2451 imc_decoder_select="bswapdsp fft mdct sinewin"
2452 indeo3_decoder_select="hpeldsp"
2453 indeo4_decoder_select="ividsp"
2454 indeo5_decoder_select="ividsp"
2455 interplay_video_decoder_select="hpeldsp"
2456 jpegls_decoder_select="mjpeg_decoder"
2457 jv_decoder_select="blockdsp"
2458 lagarith_decoder_select="llviddsp"
2459 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2460 magicyuv_decoder_select="llviddsp"
2461 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2462 metasound_decoder_select="lsp mdct sinewin"
2463 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2464 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2465 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2466 mjpegb_decoder_select="mjpeg_decoder"
2467 mlp_decoder_select="mlp_parser"
2468 motionpixels_decoder_select="bswapdsp"
2469 mp1_decoder_select="mpegaudio"
2470 mp1float_decoder_select="mpegaudio"
2471 mp2_decoder_select="mpegaudio"
2472 mp2float_decoder_select="mpegaudio"
2473 mp3_decoder_select="mpegaudio"
2474 mp3adu_decoder_select="mpegaudio"
2475 mp3adufloat_decoder_select="mpegaudio"
2476 mp3float_decoder_select="mpegaudio"
2477 mp3on4_decoder_select="mpegaudio"
2478 mp3on4float_decoder_select="mpegaudio"
2479 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2480 mpc8_decoder_select="mpegaudiodsp"
2481 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2482 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2483 mpegvideo_decoder_select="mpegvideo"
2484 mpeg1video_decoder_select="mpegvideo"
2485 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2486 mpeg2video_decoder_select="mpegvideo"
2487 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2488 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2489 mpeg4_encoder_select="h263_encoder"
2490 msa1_decoder_select="mss34dsp"
2491 msmpeg4v1_decoder_select="h263_decoder"
2492 msmpeg4v2_decoder_select="h263_decoder"
2493 msmpeg4v2_encoder_select="h263_encoder"
2494 msmpeg4v3_decoder_select="h263_decoder"
2495 msmpeg4v3_encoder_select="h263_encoder"
2496 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2497 mts2_decoder_select="mss34dsp"
2498 mxpeg_decoder_select="mjpeg_decoder"
2499 nellymoser_decoder_select="mdct sinewin"
2500 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2501 nuv_decoder_select="idctdsp lzo"
2502 on2avc_decoder_select="mdct"
2503 opus_decoder_deps="swresample"
2504 opus_decoder_select="mdct15"
2505 opus_encoder_select="audio_frame_queue mdct15"
2506 png_decoder_select="zlib"
2507 png_encoder_select="llvidencdsp zlib"
2508 prores_decoder_select="blockdsp idctdsp"
2509 prores_encoder_select="fdctdsp"
2510 qcelp_decoder_select="lsp"
2511 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2512 ra_144_decoder_select="audiodsp"
2513 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2514 ralf_decoder_select="golomb"
2515 rawvideo_decoder_select="bswapdsp"
2516 rscc_decoder_select="zlib"
2517 rtjpeg_decoder_select="me_cmp"
2518 rv10_decoder_select="h263_decoder"
2519 rv10_encoder_select="h263_encoder"
2520 rv20_decoder_select="h263_decoder"
2521 rv20_encoder_select="h263_encoder"
2522 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2523 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2524 screenpresso_decoder_select="zlib"
2525 shorten_decoder_select="bswapdsp"
2526 sipr_decoder_select="lsp"
2527 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2528 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2529 sonic_decoder_select="golomb rangecoder"
2530 sonic_encoder_select="golomb rangecoder"
2531 sonic_ls_encoder_select="golomb rangecoder"
2532 sp5x_decoder_select="mjpeg_decoder"
2533 svq1_decoder_select="hpeldsp"
2534 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2535 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2536 svq3_decoder_suggest="zlib"
2537 tak_decoder_select="audiodsp"
2538 tdsc_decoder_select="zlib mjpeg_decoder"
2539 theora_decoder_select="vp3_decoder"
2540 thp_decoder_select="mjpeg_decoder"
2541 tiff_decoder_suggest="zlib lzma"
2542 tiff_encoder_suggest="zlib"
2543 truehd_decoder_select="mlp_parser"
2544 truemotion2_decoder_select="bswapdsp"
2545 truespeech_decoder_select="bswapdsp"
2546 tscc_decoder_select="zlib"
2547 twinvq_decoder_select="mdct lsp sinewin"
2548 txd_decoder_select="texturedsp"
2549 utvideo_decoder_select="bswapdsp llviddsp"
2550 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2551 vble_decoder_select="llviddsp"
2552 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2553 vc1_qsv_decoder_deps="libmfx"
2554 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2555 vc1image_decoder_select="vc1_decoder"
2556 vorbis_decoder_select="mdct"
2557 vorbis_encoder_select="mdct"
2558 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2559 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2560 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2561 vp6a_decoder_select="vp6_decoder"
2562 vp6f_decoder_select="vp6_decoder"
2563 vp7_decoder_select="h264pred videodsp vp8dsp"
2564 vp8_decoder_select="h264pred videodsp vp8dsp"
2565 vp9_decoder_select="videodsp vp9_parser"
2566 webp_decoder_select="vp8_decoder exif"
2567 wmalossless_decoder_select="llauddsp"
2568 wmapro_decoder_select="mdct sinewin wma_freqs"
2569 wmav1_decoder_select="mdct sinewin wma_freqs"
2570 wmav1_encoder_select="mdct sinewin wma_freqs"
2571 wmav2_decoder_select="mdct sinewin wma_freqs"
2572 wmav2_encoder_select="mdct sinewin wma_freqs"
2573 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2574 wmv1_decoder_select="h263_decoder"
2575 wmv1_encoder_select="h263_encoder"
2576 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2577 wmv2_encoder_select="h263_encoder wmv2dsp"
2578 wmv3_decoder_select="vc1_decoder"
2579 wmv3image_decoder_select="wmv3_decoder"
2580 xma1_decoder_select="wmapro_decoder"
2581 xma2_decoder_select="wmapro_decoder"
2582 zerocodec_decoder_select="zlib"
2583 zlib_decoder_select="zlib"
2584 zlib_encoder_select="zlib"
2585 zmbv_decoder_select="zlib"
2586 zmbv_encoder_select="zlib"
2587
2588 # platform codecs
2589 audiotoolbox_deps="AudioToolbox_AudioToolbox_h"
2590 audiotoolbox_extralibs="-framework CoreFoundation -framework AudioToolbox -framework CoreMedia"
2591
2592 # hardware accelerators
2593 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2594 cuda_deps_any="dlopen LoadLibrary"
2595 cuvid_deps="cuda"
2596 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2597 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2598 dxva2_extralibs="-luser32"
2599 vaapi_deps="va_va_h"
2600 vda_framework_deps="VideoDecodeAcceleration_VDADecoder_h"
2601 vda_framework_extralibs="-framework VideoDecodeAcceleration"
2602 vda_deps="vda_framework pthreads"
2603 vda_extralibs="-framework CoreFoundation -framework QuartzCore"
2604 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2605 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2606 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2607 xvmc_deps="X11_extensions_XvMClib_h"
2608
2609 h263_vaapi_hwaccel_deps="vaapi"
2610 h263_vaapi_hwaccel_select="h263_decoder"
2611 h263_videotoolbox_hwaccel_deps="videotoolbox"
2612 h263_videotoolbox_hwaccel_select="h263_decoder"
2613 h264_cuvid_hwaccel_deps="cuda cuvid"
2614 h264_cuvid_hwaccel_select="h264_cuvid_decoder"
2615 h264_d3d11va_hwaccel_deps="d3d11va"
2616 h264_d3d11va_hwaccel_select="h264_decoder"
2617 h264_dxva2_hwaccel_deps="dxva2"
2618 h264_dxva2_hwaccel_select="h264_decoder"
2619 h264_mediacodec_hwaccel_deps="mediacodec"
2620 h264_mmal_hwaccel_deps="mmal"
2621 h264_qsv_hwaccel_deps="libmfx"
2622 h264_vaapi_hwaccel_deps="vaapi"
2623 h264_vaapi_hwaccel_select="h264_decoder"
2624 h264_vda_hwaccel_deps="vda"
2625 h264_vda_hwaccel_select="h264_decoder"
2626 h264_vda_old_hwaccel_deps="vda"
2627 h264_vda_old_hwaccel_select="h264_decoder"
2628 h264_vdpau_hwaccel_deps="vdpau"
2629 h264_vdpau_hwaccel_select="h264_decoder"
2630 h264_videotoolbox_hwaccel_deps="videotoolbox"
2631 h264_videotoolbox_hwaccel_select="h264_decoder"
2632 hevc_cuvid_hwaccel_deps="cuda cuvid"
2633 hevc_cuvid_hwaccel_select="hevc_cuvid_decoder"
2634 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2635 hevc_d3d11va_hwaccel_select="hevc_decoder"
2636 hevc_mediacodec_hwaccel_deps="mediacodec"
2637 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2638 hevc_dxva2_hwaccel_select="hevc_decoder"
2639 hevc_qsv_hwaccel_deps="libmfx"
2640 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2641 hevc_vaapi_hwaccel_select="hevc_decoder"
2642 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2643 hevc_vdpau_hwaccel_select="hevc_decoder"
2644 mjpeg_cuvid_hwaccel_deps="cuda cuvid"
2645 mjpeg_cuvid_hwaccel_select="mjpeg_cuvid_decoder"
2646 mpeg_xvmc_hwaccel_deps="xvmc"
2647 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2648 mpeg1_cuvid_hwaccel_deps="cuda cuvid"
2649 mpeg1_cuvid_hwaccel_select="mpeg1_cuvid_decoder"
2650 mpeg1_vdpau_hwaccel_deps="vdpau"
2651 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2652 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2653 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2654 mpeg1_xvmc_hwaccel_deps="xvmc"
2655 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2656 mpeg2_cuvid_hwaccel_deps="cuda cuvid"
2657 mpeg2_cuvid_hwaccel_select="mpeg2_cuvid_decoder"
2658 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2659 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2660 mpeg2_dxva2_hwaccel_deps="dxva2"
2661 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2662 mpeg2_mmal_hwaccel_deps="mmal"
2663 mpeg2_qsv_hwaccel_deps="libmfx"
2664 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2665 mpeg2_vaapi_hwaccel_deps="vaapi"
2666 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2667 mpeg2_vdpau_hwaccel_deps="vdpau"
2668 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2669 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2670 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2671 mpeg2_xvmc_hwaccel_deps="xvmc"
2672 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2673 mpeg4_cuvid_hwaccel_deps="cuda cuvid"
2674 mpeg4_cuvid_hwaccel_select="mpeg4_cuvid_decoder"
2675 mpeg4_mediacodec_hwaccel_deps="mediacodec"
2676 mpeg4_mmal_hwaccel_deps="mmal"
2677 mpeg4_vaapi_hwaccel_deps="vaapi"
2678 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2679 mpeg4_vdpau_hwaccel_deps="vdpau"
2680 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2681 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2682 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2683 vc1_cuvid_hwaccel_deps="cuda cuvid"
2684 vc1_cuvid_hwaccel_select="vc1_cuvid_decoder"
2685 vc1_d3d11va_hwaccel_deps="d3d11va"
2686 vc1_d3d11va_hwaccel_select="vc1_decoder"
2687 vc1_dxva2_hwaccel_deps="dxva2"
2688 vc1_dxva2_hwaccel_select="vc1_decoder"
2689 vc1_mmal_hwaccel_deps="mmal"
2690 vc1_qsv_hwaccel_deps="libmfx"
2691 vc1_qsv_hwaccel_select="qsvdec_vc1"
2692 vc1_vaapi_hwaccel_deps="vaapi"
2693 vc1_vaapi_hwaccel_select="vc1_decoder"
2694 vc1_vdpau_hwaccel_deps="vdpau"
2695 vc1_vdpau_hwaccel_select="vc1_decoder"
2696 vp8_cuvid_hwaccel_deps="cuda cuvid"
2697 vp8_cuvid_hwaccel_select="vp8_cuvid_decoder"
2698 vp9_cuvid_hwaccel_deps="cuda cuvid"
2699 vp9_cuvid_hwaccel_select="vp9_cuvid_decoder"
2700 vp8_mediacodec_hwaccel_deps="mediacodec"
2701 vp8_qsv_hwaccel_deps="libmfx"
2702 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2703 vp9_d3d11va_hwaccel_select="vp9_decoder"
2704 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2705 vp9_dxva2_hwaccel_select="vp9_decoder"
2706 vp9_mediacodec_hwaccel_deps="mediacodec"
2707 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2708 vp9_vaapi_hwaccel_select="vp9_decoder"
2709 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2710 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2711 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2712 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2713
2714 # hardware-accelerated codecs
2715 omx_deps="dlopen pthreads"
2716 omx_extralibs='$ldl'
2717 omx_rpi_select="omx"
2718 qsvdec_select="qsv"
2719 qsvenc_select="qsv"
2720 vaapi_encode_deps="vaapi"
2721
2722 hwupload_cuda_filter_deps="cuda"
2723 scale_npp_filter_deps="cuda libnpp"
2724
2725 nvenc_deps="cuda"
2726 nvenc_deps_any="dlopen LoadLibrary"
2727 nvenc_encoder_deps="nvenc"
2728
2729 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2730 h264_cuvid_decoder_deps="cuda cuvid"
2731 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2732 h264_mediacodec_decoder_deps="mediacodec"
2733 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2734 h264_mmal_decoder_deps="mmal"
2735 h264_nvenc_encoder_deps="nvenc"
2736 h264_omx_encoder_deps="omx"
2737 h264_qsv_decoder_deps="libmfx"
2738 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2739 h264_qsv_encoder_deps="libmfx"
2740 h264_qsv_encoder_select="qsvenc"
2741 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2742 h264_vaapi_encoder_select="vaapi_encode golomb"
2743 h264_vda_decoder_deps="vda"
2744 h264_vda_decoder_select="h264_decoder"
2745 h264_vdpau_decoder_deps="vdpau"
2746 h264_vdpau_decoder_select="h264_decoder"
2747 hevc_cuvid_decoder_deps="cuda cuvid"
2748 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2749 hevc_mediacodec_decoder_deps="mediacodec"
2750 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2751 hevc_nvenc_encoder_deps="nvenc"
2752 hevc_qsv_decoder_deps="libmfx"
2753 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2754 hevc_qsv_encoder_deps="libmfx"
2755 hevc_qsv_encoder_select="hevcparse qsvenc"
2756 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2757 hevc_vaapi_encoder_select="vaapi_encode golomb"
2758 mjpeg_cuvid_decoder_deps="cuda cuvid"
2759 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2760 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2761 mpeg1_cuvid_decoder_deps="cuda cuvid"
2762 mpeg1_vdpau_decoder_deps="vdpau"
2763 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2764 mpeg2_crystalhd_decoder_select="crystalhd"
2765 mpeg2_cuvid_decoder_deps="cuda cuvid"
2766 mpeg2_mmal_decoder_deps="mmal"
2767 mpeg2_qsv_decoder_deps="libmfx"
2768 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2769 mpeg2_qsv_encoder_deps="libmfx"
2770 mpeg2_qsv_encoder_select="qsvenc"
2771 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2772 mpeg2_vaapi_encoder_select="vaapi_encode"
2773 mpeg4_crystalhd_decoder_select="crystalhd"
2774 mpeg4_cuvid_decoder_deps="cuda cuvid"
2775 mpeg4_mediacodec_decoder_deps="mediacodec"
2776 mpeg4_mmal_decoder_deps="mmal"
2777 mpeg4_omx_encoder_deps="omx"
2778 mpeg4_vdpau_decoder_deps="vdpau"
2779 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2780 mpeg_vdpau_decoder_deps="vdpau"
2781 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2782 msmpeg4_crystalhd_decoder_select="crystalhd"
2783 nvenc_h264_encoder_select="h264_nvenc_encoder"
2784 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2785 vc1_crystalhd_decoder_select="crystalhd"
2786 vc1_cuvid_decoder_deps="cuda cuvid"
2787 vc1_mmal_decoder_deps="mmal"
2788 vc1_vdpau_decoder_deps="vdpau"
2789 vc1_vdpau_decoder_select="vc1_decoder"
2790 vp8_cuvid_decoder_deps="cuda cuvid"
2791 vp8_mediacodec_decoder_deps="mediacodec"
2792 vp8_qsv_decoder_deps="libmfx"
2793 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2794 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2795 vp8_vaapi_encoder_select="vaapi_encode"
2796 vp9_cuvid_decoder_deps="cuda cuvid"
2797 vp9_mediacodec_decoder_deps="mediacodec"
2798 wmv3_crystalhd_decoder_select="crystalhd"
2799 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2800
2801 # parsers
2802 h264_parser_select="golomb h264dsp h264parse"
2803 hevc_parser_select="hevcparse"
2804 mpegaudio_parser_select="mpegaudioheader"
2805 mpegvideo_parser_select="mpegvideo"
2806 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2807 vc1_parser_select="vc1dsp"
2808
2809 # bitstream_filters
2810 mjpeg2jpeg_bsf_select="jpegtables"
2811
2812 # external libraries
2813 aac_at_decoder_deps="audiotoolbox"
2814 ac3_at_decoder_deps="audiotoolbox"
2815 ac3_at_decoder_select="ac3_parser"
2816 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2817 alac_at_decoder_deps="audiotoolbox"
2818 amr_nb_at_decoder_deps="audiotoolbox"
2819 avisynth_deps_any="dlopen LoadLibrary"
2820 avisynth_demuxer_deps="avisynth"
2821 avisynth_demuxer_select="riffdec"
2822 eac3_at_decoder_deps="audiotoolbox"
2823 eac3_at_decoder_select="ac3_parser"
2824 gsm_ms_at_decoder_deps="audiotoolbox"
2825 ilbc_at_decoder_deps="audiotoolbox"
2826 mp1_at_decoder_deps="audiotoolbox"
2827 mp2_at_decoder_deps="audiotoolbox"
2828 mp3_at_decoder_deps="audiotoolbox"
2829 mp1_at_decoder_select="mpegaudioheader"
2830 mp2_at_decoder_select="mpegaudioheader"
2831 mp3_at_decoder_select="mpegaudioheader"
2832 pcm_alaw_at_decoder_deps="audiotoolbox"
2833 pcm_mulaw_at_decoder_deps="audiotoolbox"
2834 qdmc_at_decoder_deps="audiotoolbox"
2835 qdm2_at_decoder_deps="audiotoolbox"
2836 aac_at_encoder_deps="audiotoolbox"
2837 aac_at_encoder_select="audio_frame_queue"
2838 alac_at_encoder_deps="audiotoolbox"
2839 alac_at_encoder_select="audio_frame_queue"
2840 ilbc_at_encoder_deps="audiotoolbox"
2841 ilbc_at_encoder_select="audio_frame_queue"
2842 pcm_alaw_at_encoder_deps="audiotoolbox"
2843 pcm_alaw_at_encoder_select="audio_frame_queue"
2844 pcm_mulaw_at_encoder_deps="audiotoolbox"
2845 pcm_mulaw_at_encoder_select="audio_frame_queue"
2846 chromaprint_muxer_deps="chromaprint"
2847 h264_videotoolbox_encoder_deps="videotoolbox_encoder pthreads"
2848 libcelt_decoder_deps="libcelt"
2849 libfdk_aac_decoder_deps="libfdk_aac"
2850 libfdk_aac_encoder_deps="libfdk_aac"
2851 libfdk_aac_encoder_select="audio_frame_queue"
2852 libgme_demuxer_deps="libgme"
2853 libgsm_decoder_deps="libgsm"
2854 libgsm_encoder_deps="libgsm"
2855 libgsm_ms_decoder_deps="libgsm"
2856 libgsm_ms_encoder_deps="libgsm"
2857 libilbc_decoder_deps="libilbc"
2858 libilbc_encoder_deps="libilbc"
2859 libkvazaar_encoder_deps="libkvazaar"
2860 libmodplug_demuxer_deps="libmodplug"
2861 libmp3lame_encoder_deps="libmp3lame"
2862 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2863 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2864 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2865 libopencore_amrnb_encoder_select="audio_frame_queue"
2866 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2867 libopenh264_decoder_deps="libopenh264"
2868 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2869 libopenh264_encoder_deps="libopenh264"
2870 libopenjpeg_decoder_deps="libopenjpeg"
2871 libopenjpeg_encoder_deps="libopenjpeg"
2872 libopenmpt_demuxer_deps="libopenmpt"
2873 libopus_decoder_deps="libopus"
2874 libopus_encoder_deps="libopus"
2875 libopus_encoder_select="audio_frame_queue"
2876 libschroedinger_decoder_deps="libschroedinger"
2877 libschroedinger_encoder_deps="libschroedinger"
2878 libshine_encoder_deps="libshine"
2879 libshine_encoder_select="audio_frame_queue"
2880 libspeex_decoder_deps="libspeex"
2881 libspeex_encoder_deps="libspeex"
2882 libspeex_encoder_select="audio_frame_queue"
2883 libtheora_encoder_deps="libtheora"
2884 libtwolame_encoder_deps="libtwolame"
2885 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2886 libvorbis_decoder_deps="libvorbis"
2887 libvorbis_encoder_deps="libvorbis"
2888 libvorbis_encoder_select="audio_frame_queue"
2889 libvpx_vp8_decoder_deps="libvpx"
2890 libvpx_vp8_encoder_deps="libvpx"
2891 libvpx_vp9_decoder_deps="libvpx"
2892 libvpx_vp9_encoder_deps="libvpx"
2893 libwavpack_encoder_deps="libwavpack"
2894 libwavpack_encoder_select="audio_frame_queue"
2895 libwebp_encoder_deps="libwebp"
2896 libwebp_anim_encoder_deps="libwebp"
2897 libx262_encoder_deps="libx262"
2898 libx264_encoder_deps="libx264"
2899 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2900 libx264rgb_encoder_select="libx264_encoder"
2901 libx265_encoder_deps="libx265"
2902 libxavs_encoder_deps="libxavs"
2903 libxvid_encoder_deps="libxvid"
2904 libzvbi_teletext_decoder_deps="libzvbi"
2905 videotoolbox_deps="VideoToolbox_VideoToolbox_h"
2906 videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework CoreVideo"
2907 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2908 videotoolbox_encoder_suggest="vda_framework vt_bt2020"
2909 vt_bt2020_deps="kCVImageBufferColorPrimaries_ITU_R_2020"
2910
2911 # demuxers / muxers
2912 ac3_demuxer_select="ac3_parser"
2913 aiff_muxer_select="iso_media"
2914 asf_demuxer_select="riffdec"
2915 asf_o_demuxer_select="riffdec"
2916 asf_muxer_select="riffenc"
2917 asf_stream_muxer_select="asf_muxer"
2918 avi_demuxer_select="iso_media riffdec exif"
2919 avi_muxer_select="riffenc"
2920 caf_demuxer_select="iso_media riffdec"
2921 caf_muxer_select="iso_media"
2922 dash_muxer_select="mp4_muxer"
2923 dirac_demuxer_select="dirac_parser"
2924 dts_demuxer_select="dca_parser"
2925 dtshd_demuxer_select="dca_parser"
2926 dv_demuxer_select="dvprofile"
2927 dv_muxer_select="dvprofile"
2928 dxa_demuxer_select="riffdec"
2929 eac3_demuxer_select="ac3_parser"
2930 f4v_muxer_select="mov_muxer"
2931 fifo_muxer_deps="threads"
2932 flac_demuxer_select="flac_parser"
2933 hds_muxer_select="flv_muxer"
2934 hls_muxer_select="mpegts_muxer"
2935 image2_alias_pix_demuxer_select="image2_demuxer"
2936 image2_brender_pix_demuxer_select="image2_demuxer"
2937 ipod_muxer_select="mov_muxer"
2938 ismv_muxer_select="mov_muxer"
2939 libnut_demuxer_deps="libnut"
2940 libnut_muxer_deps="libnut"
2941 matroska_audio_muxer_select="matroska_muxer"
2942 matroska_demuxer_select="iso_media riffdec"
2943 matroska_demuxer_suggest="bzlib lzo zlib"
2944 matroska_muxer_select="iso_media riffenc"
2945 mmf_muxer_select="riffenc"
2946 mov_demuxer_select="iso_media riffdec"
2947 mov_demuxer_suggest="zlib"
2948 mov_muxer_select="iso_media riffenc rtpenc_chain"
2949 mp3_demuxer_select="mpegaudio_parser"
2950 mp3_muxer_select="mpegaudioheader"
2951 mp4_muxer_select="mov_muxer"
2952 mpegts_demuxer_select="iso_media"
2953 mpegts_muxer_select="adts_muxer latm_muxer"
2954 mpegtsraw_demuxer_select="mpegts_demuxer"
2955 mxf_d10_muxer_select="mxf_muxer"
2956 mxf_opatom_muxer_select="mxf_muxer"
2957 nut_muxer_select="riffenc"
2958 nuv_demuxer_select="riffdec"
2959 oga_muxer_select="ogg_muxer"
2960 ogg_demuxer_select="dirac_parse"
2961 ogv_muxer_select="ogg_muxer"
2962 opus_muxer_select="ogg_muxer"
2963 psp_muxer_select="mov_muxer"
2964 rtp_demuxer_select="sdp_demuxer"
2965 rtp_muxer_select="golomb"
2966 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2967 rtsp_demuxer_select="http_protocol rtpdec"
2968 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2969 sap_demuxer_select="sdp_demuxer"
2970 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2971 sdp_demuxer_select="rtpdec"
2972 smoothstreaming_muxer_select="ismv_muxer"
2973 spdif_muxer_select="aac_parser"
2974 spx_muxer_select="ogg_muxer"
2975 swf_demuxer_suggest="zlib"
2976 tak_demuxer_select="tak_parser"
2977 tg2_muxer_select="mov_muxer"
2978 tgp_muxer_select="mov_muxer"
2979 vobsub_demuxer_select="mpegps_demuxer"
2980 w64_demuxer_select="wav_demuxer"
2981 w64_muxer_select="wav_muxer"
2982 wav_demuxer_select="riffdec"
2983 wav_muxer_select="riffenc"
2984 webm_muxer_select="iso_media riffenc"
2985 webm_dash_manifest_demuxer_select="matroska_demuxer"
2986 wtv_demuxer_select="mpegts_demuxer riffdec"
2987 wtv_muxer_select="mpegts_muxer riffenc"
2988 xmv_demuxer_select="riffdec"
2989 xwma_demuxer_select="riffdec"
2990
2991 # indevs / outdevs
2992 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2993 alsa_outdev_deps="alsa_asoundlib_h"
2994 avfoundation_indev_deps="pthreads"
2995 avfoundation_indev_extralibs="-framework Foundation -framework AVFoundation -framework CoreVideo -framework CoreMedia"
2996 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2997 caca_outdev_deps="libcaca"
2998 decklink_indev_deps="decklink pthreads"
2999 decklink_indev_extralibs="-lstdc++"
3000 decklink_outdev_deps="decklink pthreads"
3001 decklink_outdev_extralibs="-lstdc++"
3002 dshow_indev_deps="IBaseFilter"
3003 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3004 dv1394_indev_deps="dv1394"
3005 dv1394_indev_select="dv_demuxer"
3006 fbdev_indev_deps="linux_fb_h"
3007 fbdev_outdev_deps="linux_fb_h"
3008 gdigrab_indev_deps="CreateDIBSection"
3009 gdigrab_indev_extralibs="-lgdi32"
3010 gdigrab_indev_select="bmp_decoder"
3011 iec61883_indev_deps="libiec61883"
3012 jack_indev_deps="jack_jack_h"
3013 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3014 lavfi_indev_deps="avfilter"
3015 libcdio_indev_deps="libcdio"
3016 libdc1394_indev_deps="libdc1394"
3017 libv4l2_indev_deps="libv4l2"
3018 openal_indev_deps="openal"
3019 opengl_outdev_deps="opengl"
3020 oss_indev_deps_any="soundcard_h sys_soundcard_h"
3021 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
3022 pulse_indev_deps="libpulse"
3023 pulse_outdev_deps="libpulse"
3024 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
3025 qtkit_indev_select="qtkit"
3026 sdl2_outdev_deps="sdl2"
3027 sndio_indev_deps="sndio_h"
3028 sndio_outdev_deps="sndio_h"
3029 v4l_indev_deps="linux_videodev_h"
3030 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3031 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3032 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
3033 vfwcap_indev_extralibs="-lavicap32"
3034 xcbgrab_indev_deps="libxcb"
3035 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3036 xv_outdev_extralibs="-lXv -lX11 -lXext"
3037
3038 # protocols
3039 async_protocol_deps="threads"
3040 bluray_protocol_deps="libbluray"
3041 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
3042 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3043 ffrtmpcrypt_protocol_select="tcp_protocol"
3044 ffrtmphttp_protocol_deps="!librtmp_protocol"
3045 ffrtmphttp_protocol_select="http_protocol"
3046 ftp_protocol_select="tcp_protocol"
3047 gopher_protocol_select="network"
3048 http_protocol_select="tcp_protocol"
3049 httpproxy_protocol_select="tcp_protocol"
3050 https_protocol_select="tls_protocol"
3051 icecast_protocol_select="http_protocol"
3052 librtmp_protocol_deps="librtmp"
3053 librtmpe_protocol_deps="librtmp"
3054 librtmps_protocol_deps="librtmp"
3055 librtmpt_protocol_deps="librtmp"
3056 librtmpte_protocol_deps="librtmp"
3057 libsmbclient_protocol_deps="libsmbclient gplv3"
3058 libssh_protocol_deps="libssh"
3059 mmsh_protocol_select="http_protocol"
3060 mmst_protocol_select="network"
3061 rtmp_protocol_deps="!librtmp_protocol"
3062 rtmp_protocol_select="tcp_protocol"
3063 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3064 rtmps_protocol_deps="!librtmp_protocol"
3065 rtmps_protocol_select="tls_protocol"
3066 rtmpt_protocol_select="ffrtmphttp_protocol"
3067 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3068 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3069 rtp_protocol_select="udp_protocol"
3070 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3071 sctp_protocol_select="network"
3072 srtp_protocol_select="rtp_protocol srtp"
3073 tcp_protocol_select="network"
3074 tls_gnutls_protocol_deps="gnutls !tls_schannel_protocol !tls_securetransport_protocol"
3075 tls_gnutls_protocol_select="tcp_protocol"
3076 tls_openssl_protocol_deps="openssl !tls_schannel_protocol !tls_securetransport_protocol !tls_gnutls_protocol"
3077 tls_openssl_protocol_select="tcp_protocol"
3078 tls_schannel_protocol_deps="schannel"
3079 tls_schannel_protocol_select="tcp_protocol"
3080 tls_securetransport_protocol_deps="securetransport"
3081 tls_securetransport_protocol_select="tcp_protocol"
3082 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
3083 udp_protocol_select="network"
3084 udplite_protocol_select="network"
3085 unix_protocol_deps="sys_un_h"
3086 unix_protocol_select="network"
3087
3088 # filters
3089 afftfilt_filter_deps="avcodec"
3090 afftfilt_filter_select="fft"
3091 amovie_filter_deps="avcodec avformat"
3092 aresample_filter_deps="swresample"
3093 ass_filter_deps="libass"
3094 atempo_filter_deps="avcodec"
3095 atempo_filter_select="rdft"
3096 azmq_filter_deps="libzmq"
3097 blackframe_filter_deps="gpl"
3098 boxblur_filter_deps="gpl"
3099 bs2b_filter_deps="libbs2b"
3100 colormatrix_filter_deps="gpl"
3101 cover_rect_filter_deps="avcodec avformat gpl"
3102 cropdetect_filter_deps="gpl"
3103 deinterlace_qsv_filter_deps="libmfx"
3104 deinterlace_vaapi_filter_deps="vaapi"
3105 delogo_filter_deps="gpl"
3106 deshake_filter_select="pixelutils"
3107 drawtext_filter_deps="libfreetype"
3108 eq_filter_deps="gpl"
3109 fftfilt_filter_deps="avcodec"
3110 fftfilt_filter_select="rdft"
3111 find_rect_filter_deps="avcodec avformat gpl"
3112 firequalizer_filter_deps="avcodec"
3113 firequalizer_filter_select="rdft"
3114 flite_filter_deps="libflite"
3115 framerate_filter_select="pixelutils"
3116 frei0r_filter_deps="frei0r dlopen"
3117 frei0r_src_filter_deps="frei0r dlopen"
3118 fspp_filter_deps="gpl"
3119 geq_filter_deps="gpl"
3120 histeq_filter_deps="gpl"
3121 hqdn3d_filter_deps="gpl"
3122 interlace_filter_deps="gpl"
3123 kerndeint_filter_deps="gpl"
3124 ladspa_filter_deps="ladspa dlopen"
3125 mcdeint_filter_deps="avcodec gpl"
3126 movie_filter_deps="avcodec avformat"
3127 mpdecimate_filter_deps="gpl"
3128 mpdecimate_filter_select="pixelutils"
3129 mptestsrc_filter_deps="gpl"
3130 negate_filter_deps="lut_filter"
3131 nnedi_filter_deps="gpl"
3132 ocr_filter_deps="libtesseract"
3133 ocv_filter_deps="libopencv"
3134 owdenoise_filter_deps="gpl"
3135 pan_filter_deps="swresample"
3136 perspective_filter_deps="gpl"
3137 phase_filter_deps="gpl"
3138 pp7_filter_deps="gpl"
3139 pp_filter_deps="gpl postproc"
3140 pullup_filter_deps="gpl"
3141 removelogo_filter_deps="avcodec avformat swscale"
3142 repeatfields_filter_deps="gpl"
3143 resample_filter_deps="avresample"
3144 rubberband_filter_deps="librubberband"
3145 sab_filter_deps="gpl swscale"
3146 scale2ref_filter_deps="swscale"
3147 scale_filter_deps="swscale"
3148 scale_qsv_filter_deps="libmfx"
3149 select_filter_select="pixelutils"
3150 showcqt_filter_deps="avcodec avformat swscale"
3151 showcqt_filter_select="fft"
3152 showfreqs_filter_deps="avcodec"
3153 showfreqs_filter_select="fft"
3154 showspectrum_filter_deps="avcodec"
3155 showspectrum_filter_select="fft"
3156 showspectrumpic_filter_deps="avcodec"
3157 showspectrumpic_filter_select="fft"
3158 signature_filter_deps="gpl avcodec avformat"
3159 smartblur_filter_deps="gpl swscale"
3160 sofalizer_filter_deps="netcdf avcodec"
3161 sofalizer_filter_select="fft"
3162 spectrumsynth_filter_deps="avcodec"
3163 spectrumsynth_filter_select="fft"
3164 spp_filter_deps="gpl avcodec"
3165 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3166 stereo3d_filter_deps="gpl"
3167 subtitles_filter_deps="avformat avcodec libass"
3168 super2xsai_filter_deps="gpl"
3169 pixfmts_super2xsai_test_deps="super2xsai_filter"
3170 tinterlace_filter_deps="gpl"
3171 tinterlace_merge_test_deps="tinterlace_filter"
3172 tinterlace_pad_test_deps="tinterlace_filter"
3173 uspp_filter_deps="gpl avcodec"
3174 vaguedenoiser_filter_deps="gpl"
3175 vidstabdetect_filter_deps="libvidstab"
3176 vidstabtransform_filter_deps="libvidstab"
3177 zmq_filter_deps="libzmq"
3178 zoompan_filter_deps="swscale"
3179 zscale_filter_deps="libzimg"
3180 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3181
3182 # examples
3183 avio_dir_cmd_deps="avformat avutil"
3184 avio_reading_deps="avformat avcodec avutil"
3185 decode_audio_example_deps="avcodec avutil"
3186 decode_video_example_deps="avcodec avutil"
3187 demuxing_decoding_example_deps="avcodec avformat avutil"
3188 encode_audio_example_deps="avcodec avutil"
3189 encode_video_example_deps="avcodec avutil"
3190 extract_mvs_example_deps="avcodec avformat avutil"
3191 filter_audio_example_deps="avfilter avutil"
3192 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3193 filtering_video_example_deps="avfilter avcodec avformat avutil"
3194 http_multiclient_example_deps="avformat avutil fork"
3195 metadata_example_deps="avformat avutil"
3196 muxing_example_deps="avcodec avformat avutil swscale"
3197 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3198 remuxing_example_deps="avcodec avformat avutil"
3199 resampling_audio_example_deps="avutil swresample"
3200 scaling_video_example_deps="avutil swscale"
3201 transcode_aac_example_deps="avcodec avformat swresample"
3202 transcoding_example_deps="avfilter avcodec avformat avutil"
3203
3204 # libraries, in linking order
3205 avcodec_deps="avutil"
3206 avdevice_deps="avformat avcodec avutil"
3207 avfilter_deps="avutil"
3208 avformat_deps="avcodec avutil"
3209 avresample_deps="avutil"
3210 postproc_deps="avutil gpl"
3211 swresample_deps="avutil"
3212 swscale_deps="avutil"
3213
3214 # programs
3215 ffmpeg_deps="avcodec avfilter avformat swresample"
3216 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3217                null_filter
3218                trim_filter"
3219 ffplay_deps="avcodec avformat swscale swresample sdl2"
3220 ffplay_libs='$sdl2_libs'
3221 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3222 ffprobe_deps="avcodec avformat"
3223 ffserver_deps="avformat fork sarestart"
3224 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3225
3226 # documentation
3227 podpages_deps="perl"
3228 manpages_deps="perl pod2man"
3229 htmlpages_deps="perl"
3230 htmlpages_deps_any="makeinfo_html texi2html"
3231 txtpages_deps="perl makeinfo"
3232 doc_deps_any="manpages htmlpages podpages txtpages"
3233
3234 # default parameters
3235
3236 logfile="config.log"
3237
3238 # installation paths
3239 prefix_default="/usr/local"
3240 bindir_default='${prefix}/bin'
3241 datadir_default='${prefix}/share/ffmpeg'
3242 docdir_default='${prefix}/share/doc/ffmpeg'
3243 incdir_default='${prefix}/include'
3244 libdir_default='${prefix}/lib'
3245 mandir_default='${prefix}/share/man'
3246
3247 # toolchain
3248 ar_default="ar"
3249 cc_default="gcc"
3250 cxx_default="g++"
3251 host_cc_default="gcc"
3252 doxygen_default="doxygen"
3253 install="install"
3254 ln_s_default="ln -s -f"
3255 nm_default="nm -g"
3256 objformat="elf"
3257 pkg_config_default=pkg-config
3258 ranlib_default="ranlib"
3259 strip_default="strip"
3260 version_script='--version-script'
3261 yasmexe_default="yasm"
3262 windres_default="windres"
3263
3264 # OS
3265 target_os_default=$(tolower $(uname -s))
3266 host_os=$target_os_default
3267
3268 # machine
3269 if test "$target_os_default" = aix; then
3270     arch_default=$(uname -p)
3271     strip_default="strip -X32_64"
3272 else
3273     arch_default=$(uname -m)
3274 fi
3275 cpu="generic"
3276 intrinsics="none"
3277
3278 # configurable options
3279 enable $PROGRAM_LIST
3280 enable $DOCUMENT_LIST
3281 enable $EXAMPLE_LIST
3282 enable $(filter_out avresample $LIBRARY_LIST)
3283 enable stripping
3284
3285 enable asm
3286 enable debug
3287 enable doc
3288 enable faan faandct faanidct
3289 enable optimizations
3290 enable runtime_cpudetect
3291 enable safe_bitstream_reader
3292 enable static
3293 enable swscale_alpha
3294 enable valgrind_backtrace
3295
3296 sws_max_filter_size_default=256
3297 set_default sws_max_filter_size
3298
3299 # build settings
3300 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3301 LIBPREF="lib"
3302 LIBSUF=".a"
3303 FULLNAME='$(NAME)$(BUILDSUF)'
3304 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3305 SLIBPREF="lib"
3306 SLIBSUF=".so"
3307 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3308 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3309 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3310 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3311 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3312 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3313 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3314
3315 asflags_filter=echo
3316 cflags_filter=echo
3317 ldflags_filter=echo
3318
3319 AS_C='-c'
3320 AS_O='-o $@'
3321 CC_C='-c'
3322 CC_E='-E -o $@'
3323 CC_O='-o $@'
3324 CXX_C='-c'
3325 CXX_O='-o $@'
3326 OBJCC_C='-c'
3327 OBJCC_E='-E -o $@'
3328 OBJCC_O='-o $@'
3329 LD_O='-o $@'
3330 LD_LIB='-l%'
3331 LD_PATH='-L'
3332 HOSTCC_C='-c'
3333 HOSTCC_E='-E -o $@'
3334 HOSTCC_O='-o $@'
3335 HOSTLD_O='-o $@'
3336
3337 host_libs='-lm'
3338 host_cflags_filter=echo
3339 host_ldflags_filter=echo
3340
3341 target_path='$(CURDIR)'
3342
3343 # since the object filename is not given with the -MM flag, the compiler
3344 # is only able to print the basename, and we must add the path ourselves
3345 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3346 DEPFLAGS='-MM'
3347
3348 # find source path
3349 if test -f configure; then
3350     source_path=.
3351 else
3352     source_path=$(cd $(dirname "$0"); pwd)
3353     case "$source_path" in
3354         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3355     esac
3356     test -e "$source_path/config.h" &&
3357         die "Out of tree builds are impossible with config.h in source dir."
3358 fi
3359
3360 for v in "$@"; do
3361     r=${v#*=}
3362     l=${v%"$r"}
3363     r=$(sh_quote "$r")
3364     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3365 done
3366
3367 find_things(){
3368     thing=$1
3369     pattern=$2
3370     file=$source_path/$3
3371     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3372 }
3373
3374 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3375 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3376 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3377 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3378 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3379 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3380 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3381 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3382 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3383
3384 find_things_extern(){
3385     thing=$1
3386     pattern=$2
3387     file=$source_path/$3
3388     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3389 }
3390
3391 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3392 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3393
3394 ALL_COMPONENTS="
3395     $BSF_LIST
3396     $DECODER_LIST
3397     $DEMUXER_LIST
3398     $ENCODER_LIST
3399     $FILTER_LIST
3400     $HWACCEL_LIST
3401     $INDEV_LIST
3402     $MUXER_LIST
3403     $OUTDEV_LIST
3404     $PARSER_LIST
3405     $PROTOCOL_LIST
3406 "
3407
3408 for n in $COMPONENT_LIST; do
3409     v=$(toupper ${n%s})_LIST
3410     eval enable \$$v
3411     eval ${n}_if_any="\$$v"
3412 done
3413
3414 enable $ARCH_EXT_LIST
3415
3416 die_unknown(){
3417     echo "Unknown option \"$1\"."
3418     echo "See $0 --help for available options."
3419     exit 1
3420 }
3421
3422 print_in_columns() {
3423     cols=$(expr $ncols / 24)
3424     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3425 }
3426
3427 show_list() {
3428     suffix=_$1
3429     shift
3430     echo $* | sed s/$suffix//g | print_in_columns
3431     exit 0
3432 }
3433
3434 rand_list(){
3435     IFS=', '
3436     set -- $*
3437     unset IFS
3438     for thing; do
3439         comp=${thing%:*}
3440         prob=${thing#$comp}
3441         prob=${prob#:}
3442         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3443         echo "prob ${prob:-0.5}"
3444         printf '%s\n' $comp
3445     done
3446 }
3447
3448 do_random(){
3449     action=$1
3450     shift
3451     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3452     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3453 }
3454
3455 for opt do
3456     optval="${opt#*=}"
3457     case "$opt" in
3458         --extra-ldflags=*)
3459             add_ldflags $optval
3460         ;;
3461         --extra-ldexeflags=*)
3462             add_ldexeflags $optval
3463         ;;
3464         --extra-ldlibflags=*)
3465             add_ldlibflags $optval
3466         ;;
3467         --extra-libs=*)
3468             add_extralibs $optval
3469         ;;
3470         --disable-devices)
3471             disable $INDEV_LIST $OUTDEV_LIST
3472         ;;
3473         --enable-debug=*)
3474             debuglevel="$optval"
3475         ;;
3476         --disable-programs)
3477             disable $PROGRAM_LIST
3478         ;;
3479         --disable-everything)
3480             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3481         ;;
3482         --disable-all)
3483             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3484             disable $LIBRARY_LIST $PROGRAM_LIST doc
3485             enable avutil
3486         ;;
3487         --enable-random|--disable-random)
3488             action=${opt%%-random}
3489             do_random ${action#--} $COMPONENT_LIST
3490         ;;
3491         --enable-random=*|--disable-random=*)
3492             action=${opt%%-random=*}
3493             do_random ${action#--} $optval
3494         ;;
3495         --enable-*=*|--disable-*=*)
3496             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3497             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3498             eval list=\$$(toupper $thing)_LIST
3499             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3500             list=$(filter "$name" $list)
3501             [ "$list" = "" ] && warn "Option $opt did not match anything"
3502             $action $list
3503         ;;
3504         --enable-?*|--disable-?*)
3505             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3506             if is_in $option $COMPONENT_LIST; then
3507                 test $action = disable && action=unset
3508                 eval $action \$$(toupper ${option%s})_LIST
3509             elif is_in $option $CMDLINE_SELECT; then
3510                 $action $option
3511             else
3512                 die_unknown $opt
3513             fi
3514         ;;
3515         --list-*)
3516             NAME="${opt#--list-}"
3517             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3518             NAME=${NAME%s}
3519             eval show_list $NAME \$$(toupper $NAME)_LIST
3520         ;;
3521         --help|-h) show_help
3522         ;;
3523         --quiet|-q) quiet=yes
3524         ;;
3525         --fatal-warnings) enable fatal_warnings
3526         ;;
3527         *)
3528             optname="${opt%%=*}"
3529             optname="${optname#--}"
3530             optname=$(echo "$optname" | sed 's/-/_/g')
3531             if is_in $optname $CMDLINE_SET; then
3532                 eval $optname='$optval'
3533             elif is_in $optname $CMDLINE_APPEND; then
3534                 append $optname "$optval"
3535             else
3536                 die_unknown $opt
3537             fi
3538         ;;
3539     esac
3540 done
3541
3542 for e in $env; do
3543     eval "export $e"
3544 done
3545
3546 # Mark specifically enabled, but normally autodetected libraries as requested.
3547 for lib in $AUTODETECT_LIBS; do
3548     enabled $lib && request $lib
3549 done
3550
3551 # Enable platform codecs by default.
3552 enable_weak audiotoolbox
3553
3554 # Enable hwaccels by default.
3555 enable_weak d3d11va dxva2 vaapi vda vdpau videotoolbox_hwaccel xvmc
3556 enable_weak xlib
3557
3558 enable_weak cuda cuvid nvenc vda_framework videotoolbox videotoolbox_encoder
3559
3560 disabled logging && logfile=/dev/null
3561
3562 die_license_disabled() {
3563     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3564 }
3565
3566 die_license_disabled_gpl() {
3567     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3568 }
3569
3570 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3571 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3572
3573 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3574 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3575
3576 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3577
3578 # Disable all the library-specific components if the library itself
3579 # is disabled, see AVCODEC_LIST and following _LIST variables.
3580
3581 disable_components(){
3582     disabled ${1} && disable $(
3583         eval components="\$$(toupper ${1})_COMPONENTS"
3584         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3585     )
3586 }
3587
3588 map 'disable_components $v' $LIBRARY_LIST
3589
3590 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3591 set >> $logfile
3592
3593 test -n "$valgrind" && toolchain="valgrind-memcheck"
3594
3595 case "$toolchain" in
3596     *-asan)
3597         cc_default="${toolchain%-asan}"
3598         add_cflags  -fsanitize=address
3599         add_ldflags -fsanitize=address
3600     ;;
3601     *-msan)
3602         cc_default="${toolchain%-msan}"
3603         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3604         add_ldflags -fsanitize=memory
3605     ;;
3606     *-tsan)
3607         cc_default="${toolchain%-tsan}"
3608         add_cflags  -fsanitize=thread -fPIE
3609         add_ldflags -fsanitize=thread -pie
3610         case "$toolchain" in
3611             gcc-tsan)
3612                 add_cflags  -fPIC
3613                 add_ldflags -fPIC
3614                 ;;
3615         esac
3616     ;;
3617     *-usan)
3618         cc_default="${toolchain%-usan}"
3619         add_cflags  -fsanitize=undefined
3620         add_ldflags -fsanitize=undefined
3621     ;;
3622     valgrind-*)
3623         target_exec_default="valgrind"
3624         case "$toolchain" in
3625             valgrind-massif)
3626                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3627                 ;;
3628             valgrind-memcheck)
3629                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3630                 ;;
3631         esac
3632     ;;
3633     msvc)
3634         # Check whether the current MSVC version needs the C99 converter.
3635         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3636         # support enough of C99 to build ffmpeg. Default to the new
3637         # behaviour if the regexp was unable to match anything, since this
3638         # successfully parses the version number of existing supported
3639         # versions that require the converter (MSVC 2010 and 2012).
3640         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3641         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3642             cc_default="cl"
3643         else
3644             cc_default="c99wrap cl"
3645         fi
3646         ld_default="$source_path/compat/windows/mslink"
3647         nm_default="dumpbin -symbols"
3648         ar_default="lib"
3649         case "$arch" in
3650         arm*)
3651             as_default="armasm"
3652             ;;
3653         esac
3654         target_os_default="win32"
3655         # Use a relative path for TMPDIR. This makes sure all the
3656         # ffconf temp files are written with a relative path, avoiding
3657         # issues with msys/win32 path conversion for MSVC parameters
3658         # such as -Fo<file> or -out:<file>.
3659         TMPDIR=.
3660     ;;
3661     icl)
3662         cc_default="icl"
3663         ld_default="xilink"
3664         nm_default="dumpbin -symbols"
3665         ar_default="xilib"
3666         target_os_default="win32"
3667         TMPDIR=.
3668     ;;
3669     gcov)
3670         add_cflags  -fprofile-arcs -ftest-coverage
3671         add_ldflags -fprofile-arcs -ftest-coverage
3672     ;;
3673     llvm-cov)
3674         add_cflags -fprofile-arcs -ftest-coverage
3675         add_ldflags --coverage
3676     ;;
3677     hardened)
3678         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3679         add_cflags   -fno-strict-overflow -fstack-protector-all
3680         add_ldflags  -Wl,-z,relro -Wl,-z,now
3681         add_cflags   -fPIE
3682         add_ldexeflags -fPIE -pie
3683     ;;
3684     ?*)
3685         die "Unknown toolchain $toolchain"
3686     ;;
3687 esac
3688
3689 test -n "$cross_prefix" && enable cross_compile
3690
3691 if enabled cross_compile; then
3692     test -n "$arch" && test -n "$target_os" ||
3693         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3694 fi
3695
3696 ar_default="${cross_prefix}${ar_default}"
3697 cc_default="${cross_prefix}${cc_default}"
3698 cxx_default="${cross_prefix}${cxx_default}"
3699 nm_default="${cross_prefix}${nm_default}"
3700 pkg_config_default="${cross_prefix}${pkg_config_default}"
3701 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3702     ranlib_default="${cross_prefix}${ranlib_default} -D"
3703 else
3704     ranlib_default="${cross_prefix}${ranlib_default}"
3705 fi
3706 strip_default="${cross_prefix}${strip_default}"
3707 windres_default="${cross_prefix}${windres_default}"
3708
3709 sysinclude_default="${sysroot}/usr/include"
3710
3711 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3712     target_exec target_os yasmexe
3713 enabled cross_compile || host_cc_default=$cc
3714 set_default host_cc
3715
3716 pkg_config_fail_message=""
3717 if ! $pkg_config --version >/dev/null 2>&1; then
3718     warn "$pkg_config not found, library detection may fail."
3719     pkg_config=false
3720 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3721     pkg_config_fail_message="
3722 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3723 fi
3724
3725 if test $doxygen != $doxygen_default && \
3726   ! $doxygen --version >/dev/null 2>&1; then
3727     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3728 fi
3729
3730 exesuf() {
3731     case $1 in
3732         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3733     esac
3734 }
3735
3736 EXESUF=$(exesuf $target_os)
3737 HOSTEXESUF=$(exesuf $host_os)
3738
3739 # set temporary file name
3740 : ${TMPDIR:=$TEMPDIR}
3741 : ${TMPDIR:=$TMP}
3742 : ${TMPDIR:=/tmp}
3743
3744 if [ -n "$tempprefix" ] ; then
3745     mktemp(){
3746         echo $tempprefix.${HOSTNAME}.${UID}
3747     }
3748 elif ! check_cmd mktemp -u XXXXXX; then
3749     # simple replacement for missing mktemp
3750     # NOT SAFE FOR GENERAL USE
3751     mktemp(){
3752         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3753     }
3754 fi
3755
3756 tmpfile(){
3757     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3758         (set -C; exec > $tmp) 2>/dev/null ||
3759         die "Unable to create temporary file in $TMPDIR."
3760     append TMPFILES $tmp
3761     eval $1=$tmp
3762 }
3763
3764 trap 'rm -f -- $TMPFILES' EXIT
3765
3766 tmpfile TMPASM .asm
3767 tmpfile TMPC   .c
3768 tmpfile TMPCPP .cpp
3769 tmpfile TMPE   $EXESUF
3770 tmpfile TMPH   .h
3771 tmpfile TMPM   .m
3772 tmpfile TMPO   .o
3773 tmpfile TMPS   .S
3774 tmpfile TMPSH  .sh
3775 tmpfile TMPV   .ver
3776
3777 unset -f mktemp
3778
3779 chmod +x $TMPE
3780
3781 # make sure we can execute files in $TMPDIR
3782 cat > $TMPSH 2>> $logfile <<EOF
3783 #! /bin/sh
3784 EOF
3785 chmod +x $TMPSH >> $logfile 2>&1
3786 if ! $TMPSH >> $logfile 2>&1; then
3787     cat <<EOF
3788 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3789 variable to another directory and make sure that it is not mounted noexec.
3790 EOF
3791     die "Sanity test failed."
3792 fi
3793
3794 armasm_flags(){
3795     for flag; do
3796         case $flag in
3797             # Filter out MSVC cl.exe options from cflags that shouldn't
3798             # be passed to gas-preprocessor
3799             -M[TD]*)                                            ;;
3800             *)                  echo $flag                      ;;
3801         esac
3802    done
3803 }
3804
3805 ccc_flags(){
3806     for flag; do
3807         case $flag in
3808             -std=c99)           echo -c99                       ;;
3809             -mcpu=*)            echo -arch ${flag#*=}           ;;
3810             -mieee)             echo -ieee                      ;;
3811             -O*|-fast)          echo $flag                      ;;
3812             -fno-math-errno)    echo -assume nomath_errno       ;;
3813             -g)                 echo -g3                        ;;
3814             -Wall)              echo -msg_enable level2         ;;
3815             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3816             -Wl,*)              echo $flag                      ;;
3817             -f*|-W*)                                            ;;
3818             *)                  echo $flag                      ;;
3819         esac
3820    done
3821 }
3822
3823 cparser_flags(){
3824     for flag; do
3825         case $flag in
3826             -Wno-switch)             echo -Wno-switch-enum ;;
3827             -Wno-format-zero-length) ;;
3828             -Wdisabled-optimization) ;;
3829             -Wno-pointer-sign)       echo -Wno-other ;;
3830             *)                       echo $flag ;;
3831         esac
3832     done
3833 }
3834
3835 msvc_common_flags(){
3836     for flag; do
3837         case $flag in
3838             # In addition to specifying certain flags under the compiler
3839             # specific filters, they must be specified here as well or else the
3840             # generic catch all at the bottom will print the original flag.
3841             -Wall)                ;;
3842             -std=c99)             ;;
3843             # Common flags
3844             -fomit-frame-pointer) ;;
3845             -g)                   echo -Z7 ;;
3846             -fno-math-errno)      ;;
3847             -fno-common)          ;;
3848             -fno-signed-zeros)    ;;
3849             -fPIC)                ;;
3850             -mthumb)              ;;
3851             -march=*)             ;;
3852             -lz)                  echo zlib.lib ;;
3853             -lavicap32)           echo vfw32.lib user32.lib ;;
3854             -lx264)               echo libx264.lib ;;
3855             -l*)                  echo ${flag#-l}.lib ;;
3856             -LARGEADDRESSAWARE)   echo $flag ;;
3857             -L*)                  echo -libpath:${flag#-L} ;;
3858             *)                    echo $flag ;;
3859         esac
3860     done
3861 }
3862
3863 msvc_flags(){
3864     msvc_common_flags "$@"
3865     for flag; do
3866         case $flag in
3867             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3868                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3869                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3870                                        -wd4307 \
3871                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
3872         esac
3873     done
3874 }
3875
3876 icl_flags(){
3877     msvc_common_flags "$@"
3878     for flag; do
3879         case $flag in
3880             # Despite what Intel's documentation says -Wall, which is supported
3881             # on Windows, does enable remarks so disable them here.
3882             -Wall)                echo $flag -Qdiag-disable:remark ;;
3883             -std=c99)             echo -Qstd=c99 ;;
3884             -flto)                echo -ipo ;;
3885         esac
3886     done
3887 }
3888
3889 icc_flags(){
3890     for flag; do
3891         case $flag in
3892             -flto)                echo -ipo ;;
3893             *)                    echo $flag ;;
3894         esac
3895     done
3896 }
3897
3898 pgi_flags(){
3899     for flag; do
3900         case $flag in
3901             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3902             -fomit-frame-pointer) echo -Mnoframe ;;
3903             -g)                   echo -gopt ;;
3904             *)                    echo $flag ;;
3905         esac
3906     done
3907 }
3908
3909 suncc_flags(){
3910     for flag; do
3911         case $flag in
3912             -march=*|-mcpu=*)
3913                 case "${flag#*=}" in
3914                     native)                   echo -xtarget=native       ;;
3915                     v9|niagara)               echo -xarch=sparc          ;;
3916                     ultrasparc)               echo -xarch=sparcvis       ;;
3917                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3918                     i586|pentium)             echo -xchip=pentium        ;;
3919                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3920                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3921                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3922                     pentium4*)          echo -xtarget=pentium4           ;;
3923                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3924                     *-sse3)             echo -xarch=sse3                 ;;
3925                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3926                     bonnell)                   echo -xarch=ssse3         ;;
3927                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3928                     westmere)                  echo -xtarget=westmere    ;;
3929                     silvermont)                echo -xarch=sse4_2        ;;
3930                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3931                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
3932                                                echo -xarch=avx           ;;
3933                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3934                     btver1)                    echo -xarch=amdsse4a      ;;
3935                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
3936                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3937                     k8|opteron|athlon64|athlon-fx)
3938                                                echo -xarch=sse2a         ;;
3939                     athlon*)                   echo -xarch=pentium_proa  ;;
3940                 esac
3941                 ;;
3942             -std=c99)             echo -xc99              ;;
3943             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3944             -fPIC)                echo -KPIC -xcode=pic32 ;;
3945             -W*,*)                echo $flag              ;;
3946             -f*-*|-W*|-mimpure-text)                      ;;
3947             -shared)              echo -G                 ;;
3948             *)                    echo $flag              ;;
3949         esac
3950     done
3951 }
3952
3953 tms470_flags(){
3954     for flag; do
3955         case $flag in
3956             -march=*|-mcpu=*)
3957                 case "${flag#*=}" in
3958                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3959                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3960                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3961                     armv6*|arm11*)          echo -mv=6   ;;
3962                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3963                                             echo -mv=5e  ;;
3964                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3965                 esac
3966                 ;;
3967             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3968             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3969             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3970             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3971             -msoft-float)   echo --float_support=vfplib       ;;
3972             -O[0-3]|-mf=*)  echo $flag                        ;;
3973             -g)             echo -g -mn                       ;;
3974             -pds=*)         echo $flag                        ;;
3975             -D*|-I*)        echo $flag                        ;;
3976             --gcc|--abi=*)  echo $flag                        ;;
3977             -me)            echo $flag                        ;;
3978         esac
3979     done
3980 }
3981
3982 probe_cc(){
3983     pfx=$1
3984     _cc=$2
3985     first=$3
3986
3987     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3988     unset _ld_o _ldflags _ld_lib _ld_path
3989     unset _depflags _DEPCMD _DEPFLAGS
3990     _flags_filter=echo
3991
3992     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3993         true # no-op to avoid reading stdin in following checks
3994     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3995         _type=llvm_gcc
3996         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3997         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3998         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3999         _cflags_speed='-O3'
4000         _cflags_size='-Os'
4001     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4002         _type=gcc
4003         gcc_version=$($_cc --version | head -n1)
4004         gcc_basever=$($_cc -dumpversion)
4005         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4006         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4007         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4008         case $gcc_basever in
4009             2) ;;
4010             2.*) ;;
4011             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4012         esac
4013         if [ "$first" = true ]; then
4014             case $gcc_basever in
4015                 4.2*)
4016                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4017             esac
4018         fi
4019         _cflags_speed='-O3'
4020         _cflags_size='-Os'
4021     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4022         _type=icc
4023         _ident=$($_cc --version | head -n1)
4024         _depflags='-MMD'
4025         _cflags_speed='-O3'
4026         _cflags_size='-Os'
4027         _cflags_noopt='-O1'
4028         _flags_filter=icc_flags
4029     elif $_cc -v 2>&1 | grep -q xlc; then
4030         _type=xlc
4031         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4032         _cflags_speed='-O5'
4033         _cflags_size='-O5 -qcompact'
4034     elif $_cc -V 2>/dev/null | grep -q Compaq; then
4035         _type=ccc
4036         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
4037         _DEPFLAGS='-M'
4038         _cflags_speed='-fast'
4039         _cflags_size='-O1'
4040         _flags_filter=ccc_flags
4041     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4042         test -d "$sysroot" || die "No valid sysroot specified."
4043         _type=armcc
4044         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4045         armcc_conf="$PWD/armcc.conf"
4046         $_cc --arm_linux_configure                 \
4047              --arm_linux_config_file="$armcc_conf" \
4048              --configure_sysroot="$sysroot"        \
4049              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4050              die "Error creating armcc configuration file."
4051         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4052         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4053         as_default="${cross_prefix}gcc"
4054         _depflags='-MMD'
4055         _cflags_speed='-O3'
4056         _cflags_size='-Os'
4057     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
4058         _type=tms470
4059         _ident=$($_cc -version | head -n1 | tr -s ' ')
4060         _flags='--gcc --abi=eabi -me'
4061         _cc_e='-ppl -fe=$@'
4062         _cc_o='-fe=$@'
4063         _depflags='-ppa -ppd=$(@:.o=.d)'
4064         _cflags_speed='-O3 -mf=5'
4065         _cflags_size='-O3 -mf=2'
4066         _flags_filter=tms470_flags
4067     elif $_cc -v 2>&1 | grep -q clang; then
4068         _type=clang
4069         _ident=$($_cc --version 2>/dev/null | head -n1)
4070         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4071         _cflags_speed='-O3'
4072         _cflags_size='-Oz'
4073     elif $_cc -V 2>&1 | grep -q Sun; then
4074         _type=suncc
4075         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4076         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4077         _DEPFLAGS='-xM1 -xc99'
4078         _ldflags='-std=c99'
4079         _cflags_speed='-O5'
4080         _cflags_size='-O5 -xspace'
4081         _flags_filter=suncc_flags
4082     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4083         _type=pathscale
4084         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4085         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4086         _cflags_speed='-O2'
4087         _cflags_size='-Os'
4088         _flags_filter='filter_out -Wdisabled-optimization'
4089     elif $_cc -v 2>&1 | grep -q Open64; then
4090         _type=open64
4091         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4092         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4093         _cflags_speed='-O2'
4094         _cflags_size='-Os'
4095         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4096     elif $_cc -V 2>&1 | grep -q Portland; then
4097         _type=pgi
4098         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
4099         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
4100         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
4101         _cflags_size="-O2 -Munroll=c:1 $opt_common"
4102         _cflags_noopt="-O"
4103         _flags_filter=pgi_flags
4104     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4105         _type=armasm
4106         _ident=$($_cc | head -n1)
4107         # 4509: "This form of conditional instruction is deprecated"
4108         _flags="-nologo -ignore 4509"
4109         _flags_filter=armasm_flags
4110     elif $_cc 2>&1 | grep -q Intel; then
4111         _type=icl
4112         _ident=$($_cc 2>&1 | head -n1)
4113         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4114         # Not only is O3 broken on 13.x+ but it is slower on all previous
4115         # versions (tested) as well.
4116         _cflags_speed="-O2"
4117         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4118         if $_cc 2>&1 | grep -q Linker; then
4119             _ld_o='-out:$@'
4120         else
4121             _ld_o='-Fe$@'
4122         fi
4123         _cc_o='-Fo$@'
4124         _cc_e='-P'
4125         _flags_filter=icl_flags
4126         _ld_lib='lib%.a'
4127         _ld_path='-libpath:'
4128         # -Qdiag-error to make icl error when seeing certain unknown arguments
4129         _flags='-nologo -Qdiag-error:4044,10157'
4130         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4131         # with MSVC which enables it by default.
4132         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4133         disable stripping
4134     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4135         # lld can emulate multiple different linkers; in ms link.exe mode,
4136         # the -? parameter gives the help output which contains an identifyable
4137         # string, while it gives an error in other modes.
4138         _type=lld-link
4139         # The link.exe mode doesn't have a switch for getting the version,
4140         # but we can force it back to gnu mode and get the version from there.
4141         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4142         _ld_o='-out:$@'
4143         _flags_filter=msvc_flags
4144         _ld_lib='lib%.a'
4145         _ld_path='-libpath:'
4146     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4147         _type=msvc
4148         _ident=$($_cc 2>&1 | head -n1)
4149         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4150         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4151         _cflags_speed="-O2"
4152         _cflags_size="-O1"
4153         if $_cc -nologo- 2>&1 | grep -q Linker; then
4154             _ld_o='-out:$@'
4155         else
4156             _ld_o='-Fe$@'
4157         fi
4158         _cc_o='-Fo$@'
4159         _cc_e='-P -Fi$@'
4160         _flags_filter=msvc_flags
4161         _ld_lib='lib%.a'
4162         _ld_path='-libpath:'
4163         _flags='-nologo'
4164         disable stripping
4165     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4166         _type=cparser
4167         _ident=$($_cc --version | head -n1)
4168         _depflags='-MMD'
4169         _cflags_speed='-O4'
4170         _cflags_size='-O2'
4171         _flags_filter=cparser_flags
4172     fi
4173
4174     eval ${pfx}_type=\$_type
4175     eval ${pfx}_ident=\$_ident
4176 }
4177
4178 set_ccvars(){
4179     eval ${1}_C=\${_cc_c-\${${1}_C}}
4180     eval ${1}_E=\${_cc_e-\${${1}_E}}
4181     eval ${1}_O=\${_cc_o-\${${1}_O}}
4182
4183     if [ -n "$_depflags" ]; then
4184         eval ${1}_DEPFLAGS=\$_depflags
4185     else
4186         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4187         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4188         eval DEP${1}FLAGS=\$_flags
4189     fi
4190 }
4191
4192 probe_cc cc "$cc" "true"
4193 cflags_filter=$_flags_filter
4194 cflags_speed=$_cflags_speed
4195 cflags_size=$_cflags_size
4196 cflags_noopt=$_cflags_noopt
4197 add_cflags $_flags $_cflags
4198 cc_ldflags=$_ldflags
4199 set_ccvars CC
4200
4201 probe_cc hostcc "$host_cc"
4202 host_cflags_filter=$_flags_filter
4203 add_host_cflags  $_flags $_cflags
4204 set_ccvars HOSTCC
4205
4206 test -n "$cc_type" && enable $cc_type ||
4207     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4208
4209 : ${as_default:=$cc}
4210 : ${objcc_default:=$cc}
4211 : ${dep_cc_default:=$cc}
4212 : ${ld_default:=$cc}
4213 : ${host_ld_default:=$host_cc}
4214 set_default ar as objcc dep_cc ld ln_s host_ld windres
4215
4216 probe_cc as "$as"
4217 asflags_filter=$_flags_filter
4218 add_asflags $_flags $_cflags
4219 set_ccvars AS
4220
4221 probe_cc objcc "$objcc"
4222 objcflags_filter=$_flags_filter
4223 add_objcflags $_flags $_cflags
4224 set_ccvars OBJC
4225
4226 probe_cc ld "$ld"
4227 ldflags_filter=$_flags_filter
4228 add_ldflags $_flags $_ldflags
4229 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4230 LD_O=${_ld_o-$LD_O}
4231 LD_LIB=${_ld_lib-$LD_LIB}
4232 LD_PATH=${_ld_path-$LD_PATH}
4233
4234 probe_cc hostld "$host_ld"
4235 host_ldflags_filter=$_flags_filter
4236 add_host_ldflags $_flags $_ldflags
4237 HOSTLD_O=${_ld_o-$HOSTLD_O}
4238
4239 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4240     probe_cc depcc "$dep_cc"
4241     CCDEP=${_DEPCMD:-$DEPCMD}
4242     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4243     DEPCCFLAGS=$_flags
4244 fi
4245
4246 if $ar 2>&1 | grep -q Microsoft; then
4247     arflags="-nologo"
4248     ar_o='-out:$@'
4249 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
4250     arflags="rq"
4251     ar_o='$@'
4252 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
4253     arflags='-Xany -r -c'
4254     ar_o='$@'
4255 elif $ar 2>&1 | grep -q "\[D\] "; then
4256     arflags="rcD"
4257     ar_o='$@'
4258 else
4259     arflags="rc"
4260     ar_o='$@'
4261 fi
4262
4263 add_cflags $extra_cflags
4264 add_cxxflags $extra_cxxflags
4265 add_objcflags $extra_objcflags
4266 add_asflags $extra_cflags
4267
4268 if test -n "$sysroot"; then
4269     case "$cc_type" in
4270         gcc|llvm_gcc|clang)
4271             add_cppflags --sysroot="$sysroot"
4272             add_ldflags --sysroot="$sysroot"
4273 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
4274             add_cppflags -isysroot "$sysroot"
4275             add_ldflags -isysroot "$sysroot"
4276         ;;
4277         tms470)
4278             add_cppflags -I"$sysinclude"
4279             add_ldflags  --sysroot="$sysroot"
4280         ;;
4281     esac
4282 fi
4283
4284 if test "$cpu" = host; then
4285     enabled cross_compile &&
4286         die "--cpu=host makes no sense when cross-compiling."
4287
4288     case "$cc_type" in
4289         gcc|llvm_gcc)
4290             check_native(){
4291                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4292                 sed -n "/cc1.*$1=/{
4293                             s/.*$1=\\([^ ]*\\).*/\\1/
4294                             p
4295                             q
4296                         }" $TMPE
4297             }
4298             cpu=$(check_native -march || check_native -mcpu)
4299         ;;
4300         clang)
4301             check_native(){
4302                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4303                 sed -n "/cc1.*-target-cpu /{
4304                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4305                             p
4306                             q
4307                         }" $TMPE
4308             }
4309             cpu=$(check_native -march)
4310         ;;
4311     esac
4312
4313     test "${cpu:-host}" = host &&
4314         die "--cpu=host not supported with compiler $cc"
4315 fi
4316
4317 # Deal with common $arch aliases
4318 case "$arch" in
4319     aarch64|arm64)
4320         arch="aarch64"
4321     ;;
4322     arm*|iPad*|iPhone*)
4323         arch="arm"
4324     ;;
4325     mips*|IP*)
4326         case "$arch" in
4327         *el)
4328             add_cppflags -EL
4329             add_ldflags -EL
4330         ;;
4331         *eb)
4332             add_cppflags -EB
4333             add_ldflags -EB
4334         ;;
4335         esac
4336         arch="mips"
4337     ;;
4338     parisc*|hppa*)
4339         arch="parisc"
4340     ;;
4341     "Power Macintosh"|ppc*|powerpc*)
4342         arch="ppc"
4343     ;;
4344     s390|s390x)
4345         arch="s390"
4346     ;;
4347     sh4|sh)
4348         arch="sh4"
4349     ;;
4350     sun4*|sparc*)
4351         arch="sparc"
4352     ;;
4353     tilegx|tile-gx)
4354         arch="tilegx"
4355     ;;
4356     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4357         arch="x86"
4358     ;;
4359 esac
4360
4361 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4362 enable $arch
4363
4364 # Add processor-specific flags
4365 if enabled aarch64; then
4366
4367     case $cpu in
4368         armv*)
4369             cpuflags="-march=$cpu"
4370         ;;
4371         *)
4372             cpuflags="-mcpu=$cpu"
4373         ;;
4374     esac
4375
4376 elif enabled alpha; then
4377
4378     cpuflags="-mcpu=$cpu"
4379
4380 elif enabled arm; then
4381
4382     check_arm_arch() {
4383         check_cpp_condition stddef.h \
4384             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4385             $cpuflags
4386     }
4387
4388     probe_arm_arch() {
4389         if   check_arm_arch 4;        then echo armv4
4390         elif check_arm_arch 4T;       then echo armv4t
4391         elif check_arm_arch 5;        then echo armv5
4392         elif check_arm_arch 5E;       then echo armv5e
4393         elif check_arm_arch 5T;       then echo armv5t
4394         elif check_arm_arch 5TE;      then echo armv5te
4395         elif check_arm_arch 5TEJ;     then echo armv5te
4396         elif check_arm_arch 6;        then echo armv6
4397         elif check_arm_arch 6J;       then echo armv6j
4398         elif check_arm_arch 6K;       then echo armv6k
4399         elif check_arm_arch 6Z;       then echo armv6z
4400         elif check_arm_arch 6ZK;      then echo armv6zk
4401         elif check_arm_arch 6T2;      then echo armv6t2
4402         elif check_arm_arch 7;        then echo armv7
4403         elif check_arm_arch 7A  7_A;  then echo armv7-a
4404         elif check_arm_arch 7S;       then echo armv7-a
4405         elif check_arm_arch 7R  7_R;  then echo armv7-r
4406         elif check_arm_arch 7M  7_M;  then echo armv7-m
4407         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4408         elif check_arm_arch 8A  8_A;  then echo armv8-a
4409         fi
4410     }
4411
4412     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4413
4414     case $cpu in
4415         armv*)
4416             cpuflags="-march=$cpu"
4417             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4418         ;;
4419         *)
4420             cpuflags="-mcpu=$cpu"
4421             case $cpu in
4422                 cortex-a*)                               subarch=armv7a  ;;
4423                 cortex-r*)                               subarch=armv7r  ;;
4424                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4425                 arm11*)                                  subarch=armv6   ;;
4426                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4427                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4428                 *)                             subarch=$(probe_arm_arch) ;;
4429             esac
4430         ;;
4431     esac
4432
4433     case "$subarch" in
4434         armv5t*)    enable fast_clz                ;;
4435         armv[6-8]*)
4436             enable fast_clz
4437             disabled fast_unaligned || enable fast_unaligned
4438             ;;
4439     esac
4440
4441 elif enabled avr32; then
4442
4443     case $cpu in
4444         ap7[02]0[0-2])
4445             subarch="avr32_ap"
4446             cpuflags="-mpart=$cpu"
4447         ;;
4448         ap)
4449             subarch="avr32_ap"
4450             cpuflags="-march=$cpu"
4451         ;;
4452         uc3[ab]*)
4453             subarch="avr32_uc"
4454             cpuflags="-mcpu=$cpu"
4455         ;;
4456         uc)
4457             subarch="avr32_uc"
4458             cpuflags="-march=$cpu"
4459         ;;
4460     esac
4461
4462 elif enabled bfin; then
4463
4464     cpuflags="-mcpu=$cpu"
4465
4466 elif enabled mips; then
4467
4468     cpuflags="-march=$cpu"
4469
4470     if [ "$cpu" != "generic" ]; then
4471         disable mips32r2
4472         disable mips32r5
4473         disable mips64r2
4474         disable mips32r6
4475         disable mips64r6
4476         disable loongson2
4477         disable loongson3
4478
4479         case $cpu in
4480             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4481                 enable mips32r2
4482                 disable msa
4483             ;;
4484             p5600|i6400|p6600)
4485                 disable mipsdsp
4486                 disable mipsdspr2
4487             ;;
4488             loongson*)
4489                 enable loongson2
4490                 enable loongson3
4491                 enable local_aligned_8 local_aligned_16 local_aligned_32
4492                 enable simd_align_16
4493                 enable fast_64bit
4494                 enable fast_clz
4495                 enable fast_cmov
4496                 enable fast_unaligned
4497                 disable aligned_stack
4498                 disable mipsfpu
4499                 disable mipsdsp
4500                 disable mipsdspr2
4501                 case $cpu in
4502                     loongson3*)
4503                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4504                     ;;
4505                     loongson2e)
4506                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4507                     ;;
4508                     loongson2f)
4509                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4510                     ;;
4511                 esac
4512             ;;
4513             *)
4514                 # Unknown CPU. Disable everything.
4515                 warn "unknown CPU. Disabling all MIPS optimizations."
4516                 disable mipsfpu
4517                 disable mipsdsp
4518                 disable mipsdspr2
4519                 disable msa
4520                 disable mmi
4521             ;;
4522         esac
4523
4524         case $cpu in
4525             24kc)
4526                 disable mipsfpu
4527                 disable mipsdsp
4528                 disable mipsdspr2
4529             ;;
4530             24kf*)
4531                 disable mipsdsp
4532                 disable mipsdspr2
4533             ;;
4534             24kec|34kc|1004kc)
4535                 disable mipsfpu
4536                 disable mipsdspr2
4537             ;;
4538             24kef*|34kf*|1004kf*)
4539                 disable mipsdspr2
4540             ;;
4541             74kc)
4542                 disable mipsfpu
4543             ;;
4544             p5600)
4545                 enable mips32r5
4546                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4547             ;;
4548             i6400)
4549                 enable mips64r6
4550                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4551             ;;
4552             p6600)
4553                 enable mips64r6
4554                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4555             ;;
4556         esac
4557     else
4558         # We do not disable anything. Is up to the user to disable the unwanted features.
4559         warn 'generic cpu selected'
4560     fi
4561
4562 elif enabled ppc; then
4563
4564     disable ldbrx
4565
4566     case $(tolower $cpu) in
4567         601|ppc601|powerpc601)
4568             cpuflags="-mcpu=601"
4569             disable altivec
4570         ;;
4571         603*|ppc603*|powerpc603*)
4572             cpuflags="-mcpu=603"
4573             disable altivec
4574         ;;
4575         604*|ppc604*|powerpc604*)
4576             cpuflags="-mcpu=604"
4577             disable altivec
4578         ;;
4579         g3|75*|ppc75*|powerpc75*)
4580             cpuflags="-mcpu=750"
4581             disable altivec
4582         ;;
4583         g4|745*|ppc745*|powerpc745*)
4584             cpuflags="-mcpu=7450"
4585             disable vsx
4586         ;;
4587         74*|ppc74*|powerpc74*)
4588             cpuflags="-mcpu=7400"
4589             disable vsx
4590         ;;
4591         g5|970|ppc970|powerpc970)
4592             cpuflags="-mcpu=970"
4593             disable vsx
4594         ;;
4595         power[3-6]*)
4596             cpuflags="-mcpu=$cpu"
4597             disable vsx
4598         ;;
4599         power[7-8]*)
4600             cpuflags="-mcpu=$cpu"
4601         ;;
4602         cell)
4603             cpuflags="-mcpu=cell"
4604             enable ldbrx
4605             disable vsx
4606         ;;
4607         e500mc)
4608             cpuflags="-mcpu=e500mc"
4609             disable altivec
4610         ;;
4611         e500v2)
4612             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4613             disable altivec
4614             disable dcbzl
4615         ;;
4616         e500)
4617             cpuflags="-mcpu=8540 -mhard-float"
4618             disable altivec
4619             disable dcbzl
4620         ;;
4621     esac
4622
4623 elif enabled sparc; then
4624
4625     case $cpu in
4626         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4627             cpuflags="-mcpu=$cpu"
4628         ;;
4629         ultrasparc*|niagara[234])
4630             cpuflags="-mcpu=$cpu"
4631         ;;
4632     esac
4633
4634 elif enabled x86; then
4635
4636     case $cpu in
4637         i[345]86|pentium)
4638             cpuflags="-march=$cpu"
4639             disable i686
4640             disable mmx
4641         ;;
4642         # targets that do NOT support nopl and conditional mov (cmov)
4643         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4644             cpuflags="-march=$cpu"
4645             disable i686
4646         ;;
4647         # targets that do support nopl and conditional mov (cmov)
4648         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4649         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4650         |amdfam10|barcelona|b[dt]ver*|znver*)
4651             cpuflags="-march=$cpu"
4652             enable i686
4653             enable fast_cmov
4654         ;;
4655         # targets that do support conditional mov but on which it's slow
4656         pentium4|pentium4m|prescott|nocona)
4657             cpuflags="-march=$cpu"
4658             enable i686
4659             disable fast_cmov
4660         ;;
4661     esac
4662
4663 fi
4664
4665 if [ "$cpu" != generic ]; then
4666     add_cflags  $cpuflags
4667     add_asflags $cpuflags
4668     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4669 fi
4670
4671 # compiler sanity check
4672 check_exec <<EOF
4673 int main(void){ return 0; }
4674 EOF
4675 if test "$?" != 0; then
4676     echo "$cc is unable to create an executable file."
4677     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4678         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4679         echo "Only do this if you know what cross compiling means."
4680     fi
4681     die "C compiler test failed."
4682 fi
4683
4684 add_cppflags -D_ISOC99_SOURCE
4685 add_cxxflags -D__STDC_CONSTANT_MACROS
4686 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4687
4688 # some compilers silently accept -std=c11, so we also need to check that the
4689 # version macro is defined properly
4690 if test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L"; then
4691     add_cflags -std=c11
4692 else
4693     check_cflags -std=c99
4694 fi
4695
4696 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4697 #include <stdlib.h>
4698 EOF
4699 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4700 #include <stdlib.h>
4701 EOF
4702
4703 add_host_cppflags -D_ISOC99_SOURCE
4704 check_host_cflags -std=c99
4705 check_host_cflags -Wall
4706 check_host_cflags -O3
4707
4708 check_64bit(){
4709     arch32=$1
4710     arch64=$2
4711     expr=$3
4712     check_code cc "" "int test[2*($expr) - 1]" &&
4713         subarch=$arch64 || subarch=$arch32
4714 }
4715
4716 case "$arch" in
4717     aarch64|alpha|ia64)
4718         spic=$shared
4719     ;;
4720     mips)
4721         check_64bit mips mips64 '_MIPS_SIM > 1'
4722         spic=$shared
4723     ;;
4724     parisc)
4725         check_64bit parisc parisc64 'sizeof(void *) > 4'
4726         spic=$shared
4727     ;;
4728     ppc)
4729         check_64bit ppc ppc64 'sizeof(void *) > 4'
4730         spic=$shared
4731     ;;
4732     s390)
4733         check_64bit s390 s390x 'sizeof(void *) > 4'
4734         spic=$shared
4735     ;;
4736     sparc)
4737         check_64bit sparc sparc64 'sizeof(void *) > 4'
4738         spic=$shared
4739     ;;
4740     x86)
4741         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4742         # Treat x32 as x64 for now. Note it also needs spic=$shared
4743         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4744             subarch=x86_64
4745         if test "$subarch" = "x86_64"; then
4746             spic=$shared
4747         fi
4748     ;;
4749     ppc)
4750         check_cc <<EOF && subarch="ppc64"
4751         int test[(int)sizeof(char*) - 7];
4752 EOF
4753     ;;
4754 esac
4755
4756 enable $subarch
4757 enabled spic && enable_weak pic
4758
4759 # OS specific
4760 case $target_os in
4761     aix)
4762         SHFLAGS=-shared
4763         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4764         enabled shared && add_ldflags -Wl,-brtl
4765         ;;
4766     android)
4767         disable symver
4768         enable section_data_rel_ro
4769         SLIB_INSTALL_NAME='$(SLIBNAME)'
4770         SLIB_INSTALL_LINKS=
4771         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4772         ;;
4773     haiku)
4774         prefix_default="/boot/common"
4775         network_extralibs="-lnetwork"
4776         host_libs=
4777         ;;
4778     sunos)
4779         SHFLAGS='-shared -Wl,-h,$$(@F)'
4780         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4781         network_extralibs="-lsocket -lnsl"
4782         add_cppflags -D__EXTENSIONS__
4783         # When using suncc to build, the Solaris linker will mark
4784         # an executable with each instruction set encountered by
4785         # the Solaris assembler.  As our libraries contain their own
4786         # guards for processor-specific code, instead suppress
4787         # generation of the HWCAPS ELF section on Solaris x86 only.
4788         enabled_all suncc x86 &&
4789             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4790             add_ldflags -Wl,-M,mapfile
4791         nm_default='nm -P -g'
4792         version_script='-M'
4793         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
4794         ;;
4795     netbsd)
4796         disable symver
4797         oss_indev_extralibs="-lossaudio"
4798         oss_outdev_extralibs="-lossaudio"
4799         enabled gcc || check_ldflags -Wl,-zmuldefs
4800         ;;
4801     openbsd|bitrig)
4802         disable symver
4803         SHFLAGS='-shared'
4804         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4805         SLIB_INSTALL_LINKS=
4806         oss_indev_extralibs="-lossaudio"
4807         oss_outdev_extralibs="-lossaudio"
4808         ;;
4809     dragonfly)
4810         disable symver
4811         ;;
4812     freebsd)
4813         ;;
4814     bsd/os)
4815         add_extralibs -lpoll -lgnugetopt
4816         strip="strip -d"
4817         ;;
4818     darwin)
4819         enabled ppc && add_asflags -force_cpusubtype_ALL
4820         install_name_dir_default='$(SHLIBDIR)'
4821         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4822         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4823         strip="${strip} -x"
4824         add_ldflags -Wl,-dynamic,-search_paths_first
4825         SLIBSUF=".dylib"
4826         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4827         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4828         objformat="macho"
4829         enabled x86_64 && objformat="macho64"
4830         enabled_any pic shared x86_64 ||
4831             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4832         check_header dispatch/dispatch.h &&
4833             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
4834         version_script='-exported_symbols_list'
4835         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
4836         ;;
4837     msys*)
4838         die "Native MSYS builds are discouraged, please use the MINGW environment."
4839         ;;
4840     mingw32*|mingw64*)
4841         if test $target_os = "mingw32ce"; then
4842             disable network
4843         else
4844             target_os=mingw32
4845         fi
4846         decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
4847         decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
4848         LIBTARGET=i386
4849         if enabled x86_64; then
4850             LIBTARGET="i386:x86-64"
4851         elif enabled arm; then
4852             LIBTARGET=arm-wince
4853         fi
4854         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4855         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4856         shlibdir_default="$bindir_default"
4857         SLIBPREF=""
4858         SLIBSUF=".dll"
4859         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4860         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4861         dlltool="${cross_prefix}dlltool"
4862         if check_cmd lib.exe -list; then
4863             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4864             if enabled x86_64; then
4865                 LIBTARGET=x64
4866             fi
4867         elif check_cmd $dlltool --version; then
4868             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4869         fi
4870         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4871         SLIB_INSTALL_LINKS=
4872         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4873         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4874         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--disable-auto-image-base'
4875         objformat="win32"
4876         ranlib=:
4877         enable dos_paths
4878         check_ldflags -Wl,--nxcompat,--dynamicbase
4879         # Lets work around some stupidity in binutils.
4880         # ld will strip relocations from executables even though we need them
4881         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4882         # however ld then forgets what the entry point should be (oops) so we
4883         # have to manually (re)set it.
4884         if enabled x86_32; then
4885             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
4886         elif enabled x86_64; then
4887             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
4888             check_ldflags -Wl,--high-entropy-va # binutils 2.25
4889             # Set image base >4GB for extra entropy with HEASLR
4890             add_ldexeflags -Wl,--image-base,0x140000000
4891             append SHFLAGS -Wl,--image-base,0x180000000
4892         fi
4893         ;;
4894     win32|win64)
4895         disable symver
4896         if enabled shared; then
4897             # Link to the import library instead of the normal static library
4898             # for shared libs.
4899             LD_LIB='%.lib'
4900             # Cannot build both shared and static libs with MSVC or icl.
4901             disable static
4902         fi
4903         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4904         shlibdir_default="$bindir_default"
4905         SLIBPREF=""
4906         SLIBSUF=".dll"
4907         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4908         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4909         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4910         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4911         SLIB_INSTALL_LINKS=
4912         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4913         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4914         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4915         objformat="win32"
4916         ranlib=:
4917         enable dos_paths
4918         ;;
4919     cygwin*)
4920         target_os=cygwin
4921         shlibdir_default="$bindir_default"
4922         SLIBPREF="cyg"
4923         SLIBSUF=".dll"
4924         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4925         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4926         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4927         SLIB_INSTALL_LINKS=
4928         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4929         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4930         objformat="win32"
4931         enable dos_paths
4932         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4933         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4934         ;;
4935     *-dos|freedos|opendos)
4936         network_extralibs="-lsocket"
4937         objformat="coff"
4938         enable dos_paths
4939         add_cppflags -U__STRICT_ANSI__
4940         ;;
4941     linux)
4942         enable dv1394
4943         enable section_data_rel_ro
4944         ;;
4945     irix*)
4946         target_os=irix
4947         ranlib="echo ignoring ranlib"
4948         ;;
4949     os/2*)
4950         strip="lxlite -CS"
4951         objformat="aout"
4952         add_cppflags -D_GNU_SOURCE
4953         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4954         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4955         LIBSUF="_s.a"
4956         SLIBPREF=""
4957         SLIBSUF=".dll"
4958         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4959         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4960         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
4961             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
4962             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
4963             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
4964             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
4965         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
4966             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
4967         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4968         SLIB_INSTALL_LINKS=
4969         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
4970         enable dos_paths
4971         enable_weak os2threads
4972         ;;
4973     gnu/kfreebsd)
4974         add_cppflags -D_BSD_SOURCE
4975         ;;
4976     gnu)
4977         ;;
4978     qnx)
4979         add_cppflags -D_QNX_SOURCE
4980         network_extralibs="-lsocket"
4981         ;;
4982     symbian)
4983         SLIBSUF=".dll"
4984         enable dos_paths
4985         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4986         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4987         add_ldflags -Wl,--target1-abs,--no-undefined \
4988                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4989                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4990         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4991                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4992                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4993         ;;
4994     osf1)
4995         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4996         ;;
4997     minix)
4998         ;;
4999     none)
5000         ;;
5001     *)
5002         die "Unknown OS '$target_os'."
5003         ;;
5004 esac
5005
5006 # test if creating links works
5007 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5008 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5009 mkdir "$link_dest"
5010 $ln_s "$link_dest" "$link_name"
5011 touch "$link_dest/test_file"
5012 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5013     # create link to source path
5014     [ -e src ] && rm src
5015     $ln_s "$source_path" src
5016     source_link=src
5017 else
5018     # creating directory links doesn't work
5019     # fall back to using the full source path
5020     source_link="$source_path"
5021 fi
5022 # cleanup
5023 rm -r "$link_dest"
5024 rm -r "$link_name"
5025
5026 # determine libc flavour
5027
5028 probe_libc(){
5029     pfx=$1
5030     pfx_no_=${pfx%_}
5031     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5032     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5033         eval ${pfx}libc_type=uclibc
5034         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5035     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5036         eval ${pfx}libc_type=glibc
5037         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5038     # MinGW headers can be installed on Cygwin, so check for newlib first.
5039     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5040         eval ${pfx}libc_type=newlib
5041         add_${pfx}cppflags -U__STRICT_ANSI__
5042     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5043     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5044         eval ${pfx}libc_type=mingw64
5045         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5046             add_compat msvcrt/snprintf.o
5047             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5048         fi
5049         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5050         eval test \$${pfx_no_}cc_type = "gcc" &&
5051             add_${pfx}cppflags -D__printf__=__gnu_printf__
5052     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5053          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5054         eval ${pfx}libc_type=mingw32
5055         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5056             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5057             die "ERROR: MinGW32 runtime version must be >= 3.15."
5058         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5059         check_${pfx}cpp_condition _mingw.h "defined(_WIN32_WINNT) && _WIN32_WINNT >= 0x0502" ||
5060             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
5061         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700__" &&
5062             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5063         eval test \$${pfx_no_}cc_type = "gcc" &&
5064             add_${pfx}cppflags -D__printf__=__gnu_printf__
5065     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5066         eval ${pfx}libc_type=msvcrt
5067         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5068             if [ "$pfx" = host_ ]; then
5069                 add_host_cppflags -Dsnprintf=_snprintf
5070             else
5071                 add_compat strtod.o strtod=avpriv_strtod
5072                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5073                                              _snprintf=avpriv_snprintf  \
5074                                              vsnprintf=avpriv_vsnprintf
5075             fi
5076         fi
5077         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5078         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5079         # 0x601 by default unless something else is set by the user.
5080         # This can easily lead to us detecting functions only present
5081         # in such new versions and producing binaries requiring windows 7.0.
5082         # Therefore explicitly set the default to XP unless the user has
5083         # set something else on the command line.
5084         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5085         # family. For these cases, configure is free to use any functions
5086         # found in the SDK headers by default. (Alternatively, we could force
5087         # _WIN32_WINNT to 0x0602 in that case.)
5088         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5089             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
5090 #ifdef WINAPI_FAMILY
5091 #include <winapifamily.h>
5092 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5093 #error not desktop
5094 #endif
5095 #endif
5096 EOF
5097         if [ "$pfx" = "" ]; then
5098             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5099             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5100         fi
5101     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5102         eval ${pfx}libc_type=klibc
5103     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5104         eval ${pfx}libc_type=bionic
5105     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5106         eval ${pfx}libc_type=solaris
5107         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5108     fi
5109     check_${pfx}cc <<EOF
5110 #include <time.h>
5111 void *v = localtime_r;
5112 EOF
5113 test "$?" != 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
5114 #include <time.h>
5115 void *v = localtime_r;
5116 EOF
5117
5118 }
5119
5120 probe_libc
5121 test -n "$libc_type" && enable libc_$libc_type
5122 probe_libc host_
5123 test -n "$host_libc_type" && enable host_libc_$host_libc_type
5124
5125 case $libc_type in
5126     bionic)
5127         add_compat strtod.o strtod=avpriv_strtod
5128         ;;
5129 esac
5130
5131 # hacks for compiler/libc/os combinations
5132
5133 if enabled_all tms470 libc_glibc; then
5134     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
5135     add_cppflags -D__USER_LABEL_PREFIX__=
5136     add_cppflags -D__builtin_memset=memset
5137     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
5138     add_cflags   -pds=48    # incompatible redefinition of macro
5139 fi
5140
5141 if enabled_all ccc libc_glibc; then
5142     add_ldflags -Wl,-z,now  # calls to libots crash without this
5143 fi
5144
5145 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5146     add_cppflags '-I\$(SRC_PATH)/compat/float'
5147
5148 esc(){
5149     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
5150 }
5151
5152 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
5153
5154 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5155
5156 set_default libdir
5157 : ${shlibdir_default:="$libdir"}
5158 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5159
5160 set_default $PATHS_LIST
5161 set_default nm
5162
5163 # we need to build at least one lib type
5164 if ! enabled_any static shared; then
5165     cat <<EOF
5166 At least one library type must be built.
5167 Specify --enable-static to build the static libraries or --enable-shared to
5168 build the shared libraries as well. To only build the shared libraries specify
5169 --disable-static in addition to --enable-shared.
5170 EOF
5171     exit 1
5172 fi
5173
5174 disabled optimizations || check_cflags -fomit-frame-pointer
5175
5176 enable_weak_pic() {
5177     disabled pic && return
5178     enable pic
5179     add_cppflags -DPIC
5180     case "$target_os" in
5181     mingw*|cygwin*)
5182         ;;
5183     *)
5184         add_cflags -fPIC
5185         ;;
5186     esac
5187     add_asflags  -fPIC
5188 }
5189
5190 enabled pic && enable_weak_pic
5191
5192 check_cc <<EOF || die "Symbol mangling check failed."
5193 int ff_extern;
5194 EOF
5195 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5196 extern_prefix=${sym%%ff_extern*}
5197
5198 check_cc <<EOF && enable_weak inline_asm
5199 void foo(void) { __asm__ volatile ("" ::); }
5200 EOF
5201
5202 _restrict=
5203 for restrict_keyword in restrict __restrict__ __restrict; do
5204     check_cc <<EOF && _restrict=$restrict_keyword && break
5205 void foo(char * $restrict_keyword p);
5206 EOF
5207 done
5208
5209 check_cc <<EOF && enable pragma_deprecated
5210 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
5211 EOF
5212
5213 check_cc <<EOF && enable attribute_packed
5214 struct { int x; } __attribute__((packed)) x;
5215 EOF
5216
5217 check_cc <<EOF && enable attribute_may_alias
5218 union { int x; } __attribute__((may_alias)) x;
5219 EOF
5220
5221 check_cc <<EOF || die "endian test failed"
5222 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5223 EOF
5224 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5225
5226 if ! enabled ppc64 || enabled bigendian; then
5227     disable vsx
5228 fi
5229
5230 check_gas() {
5231     log "check_gas using '$as' as AS"
5232     # :vararg is used on aarch64, arm and ppc altivec
5233     check_as <<EOF || return 1
5234 .macro m n, y:vararg=0
5235 \n: .int \y
5236 .endm
5237 m x
5238 EOF
5239     # .altmacro is only used in arm asm
5240     ! enabled arm || check_as <<EOF || return 1
5241 .altmacro
5242 EOF
5243     enable gnu_as
5244     return 0
5245 }
5246
5247 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5248     nogas=:
5249     enabled_any arm aarch64 && nogas=die
5250     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5251     as_noop=-v
5252
5253     case $as_type in
5254         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5255         gcc)  gaspp_as_type=gas ;;
5256         *)    gaspp_as_type=$as_type ;;
5257     esac
5258
5259     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5260
5261     test "${as#*gas-preprocessor.pl}" != "$as" ||
5262     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5263         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5264
5265     if ! check_gas ; then
5266         as=${gas:=$as}
5267         check_gas || \
5268             $nogas "GNU assembler not found, install/update gas-preprocessor"
5269     fi
5270
5271     check_as <<EOF && enable as_func
5272 .func test
5273 .endfunc
5274 EOF
5275 fi
5276
5277 check_inline_asm inline_asm_labels '"1:\n"'
5278
5279 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5280
5281 if enabled aarch64; then
5282     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5283     # internal assembler in clang 3.3 does not support this instruction
5284     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5285     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5286
5287     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5288
5289 elif enabled alpha; then
5290
5291     check_cflags -mieee
5292
5293 elif enabled arm; then
5294
5295     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
5296
5297     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
5298 float func(float a, float b){ return a+b; }
5299 EOF
5300
5301     enabled thumb && check_cflags -mthumb || check_cflags -marm
5302
5303     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
5304         enable vfp_args
5305     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5306         enable vfp_args
5307     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5308         case "${cross_prefix:-$cc}" in
5309             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
5310             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
5311 __asm__ (".eabi_attribute 28, 1");
5312 int main(void) { return 0; }
5313 EOF
5314         esac
5315         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5316     fi
5317
5318     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5319     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5320     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5321     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5322     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5323     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5324     enabled setend  && check_insn setend  'setend be'
5325
5326     [ $target_os = linux ] || [ $target_os = android ] ||
5327         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5328             $ARCH_EXT_LIST_ARM
5329
5330     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5331
5332     check_as <<EOF && enable as_dn_directive
5333 ra .dn d0.i16
5334 .unreq ra
5335 EOF
5336     check_as <<EOF && enable as_fpu_directive
5337 .fpu neon
5338 EOF
5339
5340     # llvm's integrated assembler supports .object_arch from llvm 3.5
5341     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
5342 .object_arch armv4
5343 EOF
5344
5345     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5346
5347 elif enabled mips; then
5348
5349     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5350     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5351     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5352
5353     # Enable minimum ISA based on selected options
5354     if enabled mips64; then
5355         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5356         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5357         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5358     else
5359         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5360         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5361         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5362         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5363     fi
5364
5365     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5366     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5367     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
5368     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5369     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5370
5371 elif enabled parisc; then
5372
5373     if enabled gcc; then
5374         case $($cc -dumpversion) in
5375             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5376         esac
5377     fi
5378
5379 elif enabled ppc; then
5380
5381     enable local_aligned_8 local_aligned_16 local_aligned_32
5382
5383     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5384     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5385     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5386     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5387
5388     # AltiVec flags: The FSF version of GCC differs from the Apple version
5389     if enabled altivec; then
5390         check_cflags -maltivec -mabi=altivec &&
5391         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
5392         check_cflags -faltivec
5393
5394         # check if our compiler supports Motorola AltiVec C API
5395         check_cc <<EOF || disable altivec
5396 $inc_altivec_h
5397 int main(void) {
5398     vector signed int v1 = (vector signed int) { 0 };
5399     vector signed int v2 = (vector signed int) { 1 };
5400     v1 = vec_add(v1, v2);
5401     return 0;
5402 }
5403 EOF
5404
5405         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5406     fi
5407
5408     if enabled vsx; then
5409         check_cflags -mvsx &&
5410         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
5411     fi
5412
5413     if enabled power8; then
5414         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
5415     fi
5416
5417 elif enabled x86; then
5418
5419     check_builtin rdtsc    intrin.h   "__rdtsc()"
5420     check_builtin mm_empty mmintrin.h "_mm_empty()"
5421
5422     enable local_aligned_8 local_aligned_16 local_aligned_32
5423
5424     # check whether EBP is available on x86
5425     # As 'i' is stored on the stack, this program will crash
5426     # if the base pointer is used to access it because the
5427     # base pointer is cleared in the inline assembly code.
5428     check_exec_crash <<EOF && enable ebp_available
5429 volatile int i=0;
5430 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5431 return i;
5432 EOF
5433
5434     # check whether EBX is available on x86
5435     check_inline_asm ebx_available '""::"b"(0)' &&
5436         check_inline_asm ebx_available '"":::"%ebx"'
5437
5438     # check whether xmm clobbers are supported
5439     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5440
5441     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5442         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5443
5444     # check whether binutils is new enough to compile SSSE3/MMXEXT
5445     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5446     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5447
5448     if ! disabled_any asm mmx yasm; then
5449         if check_cmd $yasmexe --version; then
5450             enabled x86_64 && yasm_extra="-m amd64"
5451             yasm_debug="-g dwarf2"
5452         elif check_cmd nasm -v; then
5453             yasmexe=nasm
5454             yasm_debug="-g -F dwarf"
5455             if enabled x86_64; then
5456                 case "$objformat" in
5457                     elf)   objformat=elf64 ;;
5458                     win32) objformat=win64 ;;
5459                 esac
5460             fi
5461         fi
5462
5463         YASMFLAGS="-f $objformat $yasm_extra"
5464         enabled pic               && append YASMFLAGS "-DPIC"
5465         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
5466         case "$objformat" in
5467             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
5468         esac
5469
5470         check_yasm "movbe ecx, [5]" && enable yasm ||
5471             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
5472         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
5473         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
5474         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
5475         check_yasm "CPU amdnop" || disable cpunop
5476     fi
5477
5478     case "$cpu" in
5479         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5480             disable fast_clz
5481         ;;
5482     esac
5483
5484 fi
5485
5486 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
5487
5488 check_ldflags -Wl,--as-needed
5489 check_ldflags -Wl,-z,noexecstack
5490
5491 if check_func dlopen && check_func dlsym; then
5492     ldl=
5493 elif check_func dlopen -ldl && check_func dlsym -ldl; then
5494     ldl=-ldl
5495 fi
5496
5497 avisynth_demuxer_extralibs='$ldl'
5498 cuda_extralibs='$ldl'
5499 decklink_outdev_extralibs="$decklink_outdev_extralibs $ldl"
5500 decklink_indev_extralibs="$decklink_indev_extralibs $ldl"
5501 frei0r_filter_extralibs='$ldl'
5502 frei0r_src_filter_extralibs='$ldl'
5503 ladspa_filter_extralibs='$ldl'
5504 nvenc_extralibs='$ldl'
5505 coreimage_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5506 coreimagesrc_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5507
5508 if ! disabled network; then
5509     check_func getaddrinfo $network_extralibs
5510     check_func inet_aton $network_extralibs
5511
5512     check_type netdb.h "struct addrinfo"
5513     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5514     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5515     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5516     check_type poll.h "struct pollfd"
5517     check_type netinet/sctp.h "struct sctp_event_subscribe"
5518     check_struct "sys/socket.h" "struct msghdr" msg_flags
5519     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5520     check_type netinet/in.h "struct sockaddr_in6"
5521     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5522     check_type "sys/types.h sys/socket.h" socklen_t
5523
5524     # Prefer arpa/inet.h over winsock2
5525     if check_header arpa/inet.h ; then
5526         check_func closesocket
5527     elif check_header winsock2.h ; then
5528         check_func_headers winsock2.h closesocket -lws2 &&
5529             network_extralibs="-lws2" ||
5530         { check_func_headers winsock2.h closesocket -lws2_32 &&
5531             network_extralibs="-lws2_32"; } || disable winsock2_h network
5532         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5533
5534         check_type ws2tcpip.h socklen_t
5535         check_type ws2tcpip.h "struct addrinfo"
5536         check_type ws2tcpip.h "struct group_source_req"
5537         check_type ws2tcpip.h "struct ip_mreq_source"
5538         check_type ws2tcpip.h "struct ipv6_mreq"
5539         check_type winsock2.h "struct pollfd"
5540         check_struct winsock2.h "struct sockaddr" sa_len
5541         check_type ws2tcpip.h "struct sockaddr_in6"
5542         check_type ws2tcpip.h "struct sockaddr_storage"
5543     else
5544         disable network
5545     fi
5546 fi
5547
5548 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5549 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5550 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5551 check_builtin sarestart signal.h "SA_RESTART"
5552 check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" -lpthread
5553 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5554 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5555 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5556 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5557
5558 case "$custom_allocator" in
5559     jemalloc)
5560         # jemalloc by default does not use a prefix
5561         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5562     ;;
5563     tcmalloc)
5564         require_pkg_config libtcmalloc gperftools/tcmalloc.h tc_malloc
5565         malloc_prefix=tc_
5566     ;;
5567 esac
5568
5569 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5570 check_func  ${malloc_prefix}memalign            && enable memalign
5571 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5572
5573 check_func  access
5574 check_func_headers stdlib.h arc4random
5575 check_func_headers time.h clock_gettime ||
5576     { check_lib time.h clock_gettime -lrt && LIBRT="-lrt"; }
5577 check_func  fcntl
5578 check_func  fork
5579 check_func  gethrtime
5580 check_func  getopt
5581 check_func  getrusage
5582 check_func  gettimeofday
5583 check_func  isatty
5584 check_func  mach_absolute_time
5585 check_func  mkstemp
5586 check_func  mmap
5587 check_func  mprotect
5588 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5589 check_func_headers time.h nanosleep ||
5590     { check_lib time.h nanosleep -lrt && LIBRT="-lrt"; }
5591 check_func  sched_getaffinity
5592 check_func  setrlimit
5593 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5594 check_func  strerror_r
5595 check_func  sysconf
5596 check_func  sysctl
5597 check_func  usleep
5598
5599 check_func_headers conio.h kbhit
5600 check_func_headers io.h setmode
5601 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5602 check_func_headers stdlib.h getenv
5603 check_func_headers sys/stat.h lstat
5604
5605 check_func_headers windows.h CoTaskMemFree -lole32
5606 check_func_headers windows.h GetProcessAffinityMask
5607 check_func_headers windows.h GetProcessTimes
5608 check_func_headers windows.h GetSystemTimeAsFileTime
5609 check_func_headers windows.h LoadLibrary
5610 check_func_headers windows.h MapViewOfFile
5611 check_func_headers windows.h PeekNamedPipe
5612 check_func_headers windows.h SetConsoleTextAttribute
5613 check_func_headers windows.h SetConsoleCtrlHandler
5614 check_func_headers windows.h Sleep
5615 check_func_headers windows.h VirtualAlloc
5616 check_struct windows.h "CONDITION_VARIABLE" Ptr
5617 check_func_headers glob.h glob
5618 enabled xlib &&
5619     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5620
5621 check_header AudioToolbox/AudioToolbox.h
5622 check_header direct.h
5623 check_header dirent.h
5624 check_header dlfcn.h
5625 check_header d3d11.h
5626 check_header dxva.h
5627 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5628 check_header io.h
5629 check_header libcrystalhd/libcrystalhd_if.h
5630 check_header mach/mach_time.h
5631 check_header malloc.h
5632 check_header net/udplite.h
5633 check_header poll.h
5634 check_header sys/mman.h
5635 check_header sys/param.h
5636 check_header sys/resource.h
5637 check_header sys/select.h
5638 check_header sys/time.h
5639 check_header sys/un.h
5640 check_header termios.h
5641 check_header unistd.h
5642 check_header valgrind/valgrind.h
5643 check_header vdpau/vdpau.h
5644 check_header vdpau/vdpau_x11.h
5645 check_header VideoDecodeAcceleration/VDADecoder.h
5646 check_header VideoToolbox/VideoToolbox.h
5647 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5648 enabled videotoolbox && check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferColorPrimaries_ITU_R_2020 -framework CoreVideo
5649 check_header windows.h
5650 check_header X11/extensions/XvMClib.h
5651 check_header asm/types.h
5652
5653 # it seems there are versions of clang in some distros that try to use the
5654 # gcc headers, which explodes for stdatomic
5655 # so we also check that atomics actually work here
5656 check_builtin stdatomic_h stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0)"
5657
5658 check_lib "windows.h shellapi.h" CommandLineToArgvW   -lshell32
5659 check_lib "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
5660 check_lib "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
5661
5662 check_lib "CoreServices/CoreServices.h" UTGetOSTypeFromString "-framework CoreServices"
5663
5664 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5665
5666 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5667 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5668 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5669 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5670 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5671
5672 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
5673 check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
5674 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
5675 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
5676 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5677 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5678 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
5679 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
5680
5681 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5682
5683 check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt
5684
5685 if ! disabled w32threads && ! enabled pthreads; then
5686     check_func_headers "windows.h process.h" _beginthreadex &&
5687         enable w32threads || disable w32threads
5688     if ! enabled w32threads && enabled winrt; then
5689         check_func_headers "windows.h" CreateThread &&
5690             enable w32threads || disable w32threads
5691     fi
5692 fi
5693
5694 # check for some common methods of building with pthread support
5695 # do this before the optional library checks as some of them require pthreads
5696 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5697     enable pthreads
5698     if check_func pthread_join -pthread && check_func pthread_create -pthread; then
5699         add_cflags -pthread
5700         add_extralibs -pthread
5701     elif check_func pthread_join -pthreads && check_func pthread_create -pthreads; then
5702         add_cflags -pthreads
5703         add_extralibs -pthreads
5704     elif check_func pthread_join -ldl -pthread && check_func pthread_create -ldl -pthread; then
5705         add_cflags -ldl -pthread
5706         add_extralibs -ldl -pthread
5707     elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
5708         add_extralibs -lpthreadGC2
5709     elif check_lib pthread.h pthread_join -lpthread && check_lib pthread.h pthread_create -lpthread; then
5710         :
5711     elif ! check_func pthread_join && ! check_func pthread_create; then
5712         disable pthreads
5713     fi
5714     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5715 fi
5716
5717
5718 if enabled pthreads; then
5719   check_func pthread_cancel
5720 fi
5721
5722 enabled pthreads &&
5723     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)"
5724
5725 disabled  zlib || check_lib  zlib.h      zlibVersion    -lz    || disable  zlib
5726 disabled bzlib || check_lib bzlib.h BZ2_bzlibVersion    -lbz2  || disable bzlib
5727 disabled  lzma || check_lib  lzma.h lzma_version_number -llzma || disable lzma
5728
5729 check_lib math.h sin -lm && LIBM="-lm"
5730 disabled crystalhd || check_lib "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd || disable crystalhd
5731
5732 atan2f_args=2
5733 copysign_args=2
5734 hypot_args=2
5735 ldexpf_args=2
5736 powf_args=2
5737
5738 for func in $MATH_FUNCS; do
5739     eval check_mathfunc $func \${${func}_args:-1} $LIBM
5740 done
5741
5742 for func in $COMPLEX_FUNCS; do
5743     eval check_complexfunc $func \${${func}_args:-1}
5744 done
5745
5746 # these are off by default, so fail if requested and not available
5747 enabled avfoundation_indev && { check_header_objcc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
5748 enabled avfoundation_indev && { check_lib CoreGraphics/CoreGraphics.h CGGetActiveDisplayList -framework CoreGraphics ||
5749                                 check_lib ApplicationServices/ApplicationServices.h CGGetActiveDisplayList -framework ApplicationServices; }
5750 enabled cuda              && check_header cuda.h # this is not a dependency
5751 enabled cuvid             && { enabled cuda ||
5752                                die "ERROR: CUVID requires CUDA"; }
5753 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5754 enabled coreimage_filter  && { check_header_objcc QuartzCore/CoreImage.h || disable coreimage_filter; }
5755 enabled coreimagesrc_filter && { check_header_objcc QuartzCore/CoreImage.h || disable coreimagesrc_filter; }
5756 enabled decklink          && { { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; } &&
5757                                { check_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a060100" || die "ERROR: Decklink API version must be >= 10.6.1."; } }
5758 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
5759 enabled gmp               && require gmp gmp.h mpz_export -lgmp
5760 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
5761 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads &&
5762                                check_lib "dlfcn.h" dlopen -ldl || die "ERROR: jni not found"; }
5763 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
5764 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5765 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
5766 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
5767 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
5768 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5769                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
5770                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5771 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
5772 enabled libdc1394         && require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new
5773 enabled libfdk_aac        && { use_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5774                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5775                                  warn "using libfdk without pkg-config"; } }
5776 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"
5777 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_libs
5778 enabled fontconfig        && enable libfontconfig
5779 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
5780 enabled libfreetype       && require_libfreetype
5781 enabled libfribidi        && require_pkg_config fribidi fribidi.h fribidi_version_info
5782 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
5783 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5784                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
5785                                done || die "ERROR: libgsm not found"; }
5786 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
5787 enabled libkvazaar        && require_pkg_config "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
5788 enabled libmfx            && require_pkg_config libmfx "mfx/mfxvideo.h" MFXInit
5789 enabled libmodplug        && require_pkg_config libmodplug libmodplug/modplug.h ModPlug_Load
5790 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5791 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
5792 enabled libnpp            && require libnpp npp.h nppGetLibVersion -lnppi -lnppc
5793 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5794 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5795 enabled libopencv         && { check_header opencv2/core/core_c.h &&
5796                                { use_pkg_config opencv opencv2/core/core_c.h cvCreateImageHeader ||
5797                                  require opencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
5798                                require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader; }
5799 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
5800 enabled libopenjpeg       && { { check_lib openjpeg-2.1/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5801                                check_lib openjpeg-2.1/openjpeg.h opj_version -lopenjp2 ||
5802                                { check_lib openjpeg-2.0/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5803                                { check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5804                                { check_lib openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5805                                die "ERROR: libopenjpeg not found"; }
5806 enabled libopenmpt        && require_pkg_config "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create
5807 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
5808 enabled libpulse          && require_pkg_config libpulse pulse/pulseaudio.h pa_context_new
5809 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
5810 enabled librubberband     && require_pkg_config "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new
5811 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
5812 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
5813 enabled libsmbclient      && { use_pkg_config smbclient libsmbclient.h smbc_init ||
5814                                require smbclient libsmbclient.h smbc_init -lsmbclient; }
5815 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy
5816 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr && LIBSOXR="-lsoxr"
5817 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
5818 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
5819 enabled libtesseract      && require_pkg_config tesseract tesseract/capi.h TessBaseAPICreate
5820 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
5821 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
5822                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
5823                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
5824 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
5825 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
5826 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
5827 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
5828
5829 enabled libvpx            && {
5830     enabled libvpx_vp8_decoder && {
5831         use_pkg_config "vpx >= 0.9.1" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
5832             check_lib "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
5833                 die "ERROR: libvpx decoder version must be >=0.9.1";
5834     }
5835     enabled libvpx_vp8_encoder && {
5836         use_pkg_config "vpx >= 0.9.7" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
5837             check_lib "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
5838                 die "ERROR: libvpx encoder version must be >=0.9.7";
5839     }
5840     enabled libvpx_vp9_decoder && {
5841         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
5842             check_lib "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx ||
5843                 disable libvpx_vp9_decoder;
5844     }
5845     enabled libvpx_vp9_encoder && {
5846         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
5847             check_lib "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx ||
5848                 disable libvpx_vp9_encoder;
5849     }
5850     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
5851         die "libvpx enabled but no supported decoders found"
5852     fi
5853 }
5854
5855 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
5856 enabled libwebp           && {
5857     enabled libwebp_encoder      && require_pkg_config "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
5858     enabled libwebp_anim_encoder && { use_pkg_config "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit || disable libwebp_anim_encoder; } }
5859 enabled libx264           && { use_pkg_config x264 "stdint.h x264.h" x264_encoder_encode ||
5860                                { require libx264 "stdint.h x264.h" x264_encoder_encode -lx264 &&
5861                                  warn "using libx264 without pkg-config"; } } &&
5862                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
5863                                die "ERROR: libx264 must be installed and version must be >= 0.118."; } &&
5864                              { check_cpp_condition x264.h "X264_MPEG2" &&
5865                                enable libx262; }
5866 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
5867                              { check_cpp_condition x265.h "X265_BUILD >= 68" ||
5868                                die "ERROR: libx265 version must be >= 68."; }
5869 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode -lxavs
5870 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
5871 enabled libzimg           && require_pkg_config "zimg >= 2.3.0" zimg.h zimg_get_api_version
5872 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
5873 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi &&
5874                              { check_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
5875                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
5876 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
5877 enabled mmal              && { check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
5878                                { ! enabled cross_compile &&
5879                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
5880                                  add_ldflags -L/opt/vc/lib/ &&
5881                                  check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
5882                                die "ERROR: mmal not found" &&
5883                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
5884 enabled netcdf            && require_pkg_config netcdf netcdf.h nc_inq_libvers
5885 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
5886                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
5887                                die "ERROR: openal not found"; } &&
5888                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
5889                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
5890 enabled opencl            && { check_lib OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
5891                                check_lib CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
5892                                die "ERROR: opencl not found"; } &&
5893                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
5894                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
5895                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
5896 enabled opengl            && { check_lib GL/glx.h glXGetProcAddress "-lGL" ||
5897                                check_lib windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
5898                                check_lib OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
5899                                check_lib ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
5900                                die "ERROR: opengl not found."
5901                              }
5902 enabled omx_rpi           && { check_header OMX_Core.h ||
5903                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_header OMX_Core.h ; } ||
5904                                die "ERROR: OpenMAX IL headers not found"; }
5905 enabled omx               && { check_header OMX_Core.h || die "ERROR: OpenMAX IL headers not found"; }
5906 enabled openssl           && { use_pkg_config openssl openssl/ssl.h OPENSSL_init_ssl ||
5907                                use_pkg_config openssl openssl/ssl.h SSL_library_init ||
5908                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
5909                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
5910                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
5911                                die "ERROR: openssl not found"; }
5912 enabled qtkit_indev      && { check_header_objcc QTKit/QTKit.h || disable qtkit_indev; }
5913
5914 if enabled gcrypt; then
5915     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
5916     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
5917         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
5918         gcrypt_libs=$("${GCRYPT_CONFIG}" --libs)
5919         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_libs ||
5920             die "ERROR: gcrypt not found"
5921         add_cflags $gcrypt_cflags && add_extralibs $gcrypt_libs
5922     else
5923         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
5924     fi
5925 fi
5926
5927 disabled sdl && disable sdl2
5928 if ! disabled sdl2; then
5929     SDL2_CONFIG="${cross_prefix}sdl2-config"
5930     if check_pkg_config sdl2 SDL_events.h SDL_PollEvent; then
5931         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
5932         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
5933         check_func SDL_Init $sdl2_libs $sdl2_cflags && enable sdl2
5934     else
5935       if "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
5936         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
5937         sdl2_libs=$("${SDL2_CONFIG}" --libs)
5938         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
5939         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
5940         check_func SDL_Init $sdl2_libs $sdl2_cflags && enable sdl2
5941       fi
5942     fi
5943     if test $target_os = "mingw32"; then
5944         sdl2_libs="$sdl2_libs -mconsole"
5945     fi
5946 fi
5947 enabled sdl2 && enable sdl && add_cflags $sdl2_cflags && add_extralibs $sdl2_libs
5948
5949 disabled securetransport || { check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5950     check_lib "Security/SecureTransport.h Security/Security.h" "SSLCreateContext SecItemImport" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5951     enable securetransport; }
5952
5953 disabled schannel || { check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
5954                        check_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" && enable schannel && add_extralibs -lsecur32; }
5955
5956 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
5957 enabled makeinfo \
5958     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
5959     && enable makeinfo_html || disable makeinfo_html
5960 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
5961 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
5962 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
5963 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
5964
5965 check_header linux/fb.h
5966 check_header linux/videodev.h
5967 check_header linux/videodev2.h
5968 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5969
5970 check_header sys/videoio.h
5971 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5972
5973 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
5974 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
5975 # w32api 3.12 had it defined wrong
5976 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
5977
5978 check_type "dshow.h" IBaseFilter
5979
5980 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
5981 { check_header dev/bktr/ioctl_meteor.h &&
5982   check_header dev/bktr/ioctl_bt848.h; } ||
5983 { check_header machine/ioctl_meteor.h &&
5984   check_header machine/ioctl_bt848.h; } ||
5985 { check_header dev/video/meteor/ioctl_meteor.h &&
5986   check_header dev/video/bktr/ioctl_bt848.h; } ||
5987 check_header dev/ic/bt8xx.h
5988
5989 check_header sndio.h
5990 if check_struct sys/soundcard.h audio_buf_info bytes; then
5991     enable_safe sys/soundcard.h
5992 else
5993     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
5994     #include <sys/soundcard.h>
5995     audio_buf_info abc;
5996 EOF
5997 fi
5998 check_header soundcard.h
5999
6000 enabled_any alsa_indev alsa_outdev &&
6001     check_lib alsa/asoundlib.h snd_pcm_htimestamp -lasound
6002
6003 enabled jack_indev && check_lib jack/jack.h jack_client_open -ljack &&
6004     check_func jack_port_get_latency_range -ljack
6005
6006 enabled_any sndio_indev sndio_outdev && check_lib sndio.h sio_open -lsndio
6007
6008 if enabled libcdio; then
6009     check_lib "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6010     check_lib "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6011     die "ERROR: No usable libcdio/cdparanoia found"
6012 fi
6013
6014 if ! disabled libxcb; then
6015     check_pkg_config "xcb >= 1.4" xcb/xcb.h xcb_connect || {
6016         enabled libxcb && die "ERROR: libxcb >= 1.4 not found";
6017     } && enable libxcb
6018
6019 if enabled libxcb; then
6020     disabled libxcb_shm || {
6021         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
6022             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
6023         } && check_header sys/shm.h && enable libxcb_shm; }
6024
6025     disabled libxcb_xfixes || {
6026         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
6027             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
6028         } && enable libxcb_xfixes; }
6029
6030     disabled libxcb_shape || {
6031         check_pkg_config xcb-shape xcb/shape.h xcb_shape_get_rectangles || {
6032             enabled libxcb_shape && die "ERROR: libxcb_shape not found";
6033         } && enable libxcb_shape; }
6034
6035     add_cflags $xcb_cflags $xcb_shm_cflags $xcb_xfixes_cflags $xcb_shape_cflags
6036     add_extralibs $xcb_libs $xcb_shm_libs $xcb_xfixes_libs $xcb_shape_libs
6037 fi
6038 fi
6039
6040 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6041
6042 enabled dxva2api_h &&
6043     check_cc <<EOF && enable dxva2api_cobj
6044 #define _WIN32_WINNT 0x0600
6045 #define COBJMACROS
6046 #include <windows.h>
6047 #include <d3d9.h>
6048 #include <dxva2api.h>
6049 int main(void) { IDirectXVideoDecoder *o = NULL; IDirectXVideoDecoder_Release(o); return 0; }
6050 EOF
6051
6052 enabled vaapi &&
6053     check_lib va/va.h vaInitialize -lva ||
6054     disable vaapi
6055
6056 enabled vaapi &&
6057     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
6058     disable vaapi
6059
6060 enabled vaapi &&
6061     check_lib "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm &&
6062     enable vaapi_drm
6063
6064 enabled vaapi &&
6065     check_lib "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 -lX11 &&
6066     enable vaapi_x11
6067
6068 enabled vdpau &&
6069     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
6070     disable vdpau
6071
6072 enabled vdpau &&
6073     check_lib "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11 &&
6074     enable vdpau_x11
6075
6076 if enabled x86; then
6077     case $target_os in
6078         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6079             ;;
6080         *)
6081             disable cuda cuvid nvenc
6082             ;;
6083     esac
6084 else
6085     disable cuda cuvid nvenc
6086 fi
6087
6088 enabled nvenc &&
6089     check_cc -I$source_path <<EOF || disable nvenc
6090 #include "compat/nvenc/nvEncodeAPI.h"
6091 NV_ENCODE_API_FUNCTION_LIST flist;
6092 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6093 int main(void) { return 0; }
6094 EOF
6095
6096 # Funny iconv installations are not unusual, so check it after all flags have been set
6097 disabled iconv || check_func_headers iconv.h iconv || check_lib iconv.h iconv -liconv || disable iconv
6098
6099 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6100
6101 # add some useful compiler flags if supported
6102 check_cflags -Wdeclaration-after-statement
6103 check_cflags -Wall
6104 check_cflags -Wdisabled-optimization
6105 check_cflags -Wpointer-arith
6106 check_cflags -Wredundant-decls
6107 check_cflags -Wwrite-strings
6108 check_cflags -Wtype-limits
6109 check_cflags -Wundef
6110 check_cflags -Wmissing-prototypes
6111 check_cflags -Wno-pointer-to-int-cast
6112 check_cflags -Wstrict-prototypes
6113 check_cflags -Wempty-body
6114
6115 if enabled extra_warnings; then
6116     check_cflags -Wcast-qual
6117     check_cflags -Wextra
6118     check_cflags -Wpedantic
6119 fi
6120
6121 check_disable_warning(){
6122     warning_flag=-W${1#-Wno-}
6123     test_cflags $warning_flag && add_cflags $1
6124 }
6125
6126 check_disable_warning -Wno-parentheses
6127 check_disable_warning -Wno-switch
6128 check_disable_warning -Wno-format-zero-length
6129 check_disable_warning -Wno-pointer-sign
6130 check_disable_warning -Wno-unused-const-variable
6131
6132 check_disable_warning_headers(){
6133     warning_flag=-W${1#-Wno-}
6134     test_cflags $warning_flag && add_cflags_headers $1
6135 }
6136
6137 check_disable_warning_headers -Wno-deprecated-declarations
6138 check_disable_warning_headers -Wno-unused-variable
6139
6140 # add some linker flags
6141 check_ldflags -Wl,--warn-common
6142 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6143 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
6144 enabled rpath && add_ldlibflags -Wl,-rpath,$libdir
6145 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6146
6147 # add some strip flags
6148 # -wN '..@*' is more selective than -x, but not available everywhere.
6149 check_stripflags -wN \'..@*\' || check_stripflags -x
6150
6151 enabled neon_clobber_test &&
6152     check_ldflags -Wl,--wrap,avcodec_open2              \
6153                   -Wl,--wrap,avcodec_decode_audio4      \
6154                   -Wl,--wrap,avcodec_decode_video2      \
6155                   -Wl,--wrap,avcodec_decode_subtitle2   \
6156                   -Wl,--wrap,avcodec_encode_audio2      \
6157                   -Wl,--wrap,avcodec_encode_video2      \
6158                   -Wl,--wrap,avcodec_encode_subtitle    \
6159                   -Wl,--wrap,avcodec_send_packet        \
6160                   -Wl,--wrap,avcodec_receive_packet     \
6161                   -Wl,--wrap,avcodec_send_frame         \
6162                   -Wl,--wrap,avcodec_receive_frame      \
6163                   -Wl,--wrap,swr_convert                \
6164                   -Wl,--wrap,avresample_convert ||
6165     disable neon_clobber_test
6166
6167 enabled xmm_clobber_test &&
6168     check_ldflags -Wl,--wrap,avcodec_open2              \
6169                   -Wl,--wrap,avcodec_decode_audio4      \
6170                   -Wl,--wrap,avcodec_decode_video2      \
6171                   -Wl,--wrap,avcodec_decode_subtitle2   \
6172                   -Wl,--wrap,avcodec_encode_audio2      \
6173                   -Wl,--wrap,avcodec_encode_video2      \
6174                   -Wl,--wrap,avcodec_encode_subtitle    \
6175                   -Wl,--wrap,avcodec_send_packet        \
6176                   -Wl,--wrap,avcodec_receive_packet     \
6177                   -Wl,--wrap,avcodec_send_frame         \
6178                   -Wl,--wrap,avcodec_receive_frame      \
6179                   -Wl,--wrap,swr_convert                \
6180                   -Wl,--wrap,avresample_convert         \
6181                   -Wl,--wrap,sws_scale ||
6182     disable xmm_clobber_test
6183
6184 check_ld "cc" <<EOF && enable proper_dce
6185 extern const int array[512];
6186 static inline int func(void) { return array[0]; }
6187 int main(void) { return 0; }
6188 EOF
6189
6190 if enabled proper_dce; then
6191     echo "X { local: *; };" > $TMPV
6192     if test_ldflags -Wl,${version_script},$TMPV; then
6193         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6194         check_cc <<EOF && enable symver_asm_label
6195 void ff_foo(void) __asm__ ("av_foo@VERSION");
6196 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6197 EOF
6198         check_cc <<EOF && enable symver_gnu_asm
6199 __asm__(".symver ff_foo,av_foo@VERSION");
6200 void ff_foo(void) {}
6201 EOF
6202     fi
6203 fi
6204
6205 if [ -z "$optflags" ]; then
6206     if enabled small; then
6207         optflags=$cflags_size
6208     elif enabled optimizations; then
6209         optflags=$cflags_speed
6210     else
6211         optflags=$cflags_noopt
6212     fi
6213 fi
6214
6215 check_optflags(){
6216     check_cflags "$@"
6217     enabled lto && check_ldflags "$@"
6218 }
6219
6220
6221 if enabled lto; then
6222     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6223     check_cflags  -flto
6224     check_ldflags -flto $cpuflags
6225     disable inline_asm_direct_symbol_refs
6226 fi
6227
6228 check_optflags $optflags
6229 check_optflags -fno-math-errno
6230 check_optflags -fno-signed-zeros
6231
6232 enabled ftrapv && check_cflags -ftrapv
6233
6234 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6235 int x;
6236 EOF
6237
6238
6239 if enabled icc; then
6240     # Just warnings, no remarks
6241     check_cflags -w1
6242     # -wd: Disable following warnings
6243     # 144, 167, 556: -Wno-pointer-sign
6244     # 188: enumerated type mixed with another type
6245     # 1292: attribute "foo" ignored
6246     # 1419: external declaration in primary source file
6247     # 10006: ignoring unknown option -fno-signed-zeros
6248     # 10148: ignoring unknown option -Wno-parentheses
6249     # 10156: ignoring option '-W'; no argument required
6250     # 13200: No EMMS instruction before call to function
6251     # 13203: No EMMS instruction before return from function
6252     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6253     # 11030: Warning unknown option --as-needed
6254     # 10156: ignoring option '-export'; no argument required
6255     check_ldflags -wd10156,11030
6256     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6257     enable ebp_available
6258     # The test above does not test linking
6259     enabled lto && disable symver_asm_label
6260     if enabled x86_32; then
6261         icc_version=$($cc -dumpversion)
6262         test ${icc_version%%.*} -ge 11 &&
6263             check_cflags -falign-stack=maintain-16-byte ||
6264             disable aligned_stack
6265     fi
6266 elif enabled ccc; then
6267     # disable some annoying warnings
6268     add_cflags -msg_disable bitnotint
6269     add_cflags -msg_disable mixfuncvoid
6270     add_cflags -msg_disable nonstandcast
6271     add_cflags -msg_disable unsupieee
6272 elif enabled gcc; then
6273     check_optflags -fno-tree-vectorize
6274     check_cflags -Werror=format-security
6275     check_cflags -Werror=implicit-function-declaration
6276     check_cflags -Werror=missing-prototypes
6277     check_cflags -Werror=return-type
6278     check_cflags -Werror=vla
6279     check_cflags -Wformat
6280     check_cflags -fdiagnostics-color=auto
6281     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6282 elif enabled llvm_gcc; then
6283     check_cflags -mllvm -stack-alignment=16
6284 elif enabled clang; then
6285     check_cflags -mllvm -stack-alignment=16
6286     check_cflags -mstack-alignment=16
6287     check_cflags -Qunused-arguments
6288     check_cflags -Werror=implicit-function-declaration
6289     check_cflags -Werror=missing-prototypes
6290     check_cflags -Werror=return-type
6291 elif enabled cparser; then
6292     add_cflags -Wno-missing-variable-declarations
6293     add_cflags -Wno-empty-statement
6294 elif enabled armcc; then
6295     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6296     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6297     # 2523: use of inline assembly is deprecated
6298     add_cflags -W${armcc_opt},--diag_suppress=2523
6299     add_cflags -W${armcc_opt},--diag_suppress=1207
6300     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6301     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6302     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6303     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6304 elif enabled tms470; then
6305     add_cflags -pds=824 -pds=837
6306     disable inline_asm
6307 elif enabled pathscale; then
6308     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6309 elif enabled_any msvc icl; then
6310     enabled x86_32 && disable aligned_stack
6311     enabled_all x86_32 debug && add_cflags -Oy-
6312     enabled debug && add_ldflags -debug
6313     enable pragma_deprecated
6314     if enabled icl; then
6315         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6316         # (correctly) on icl 13.x.
6317         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6318             add_cflags -Qansi-alias
6319         # Some inline asm is not compilable in debug
6320         if enabled debug; then
6321             disable ebp_available
6322             disable ebx_available
6323         fi
6324     fi
6325     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6326     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
6327     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6328     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6329     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6330     # MSVC 2013 and newer can handle it fine.
6331     # If this declspec fails, force including stdlib.h before the restrict redefinition
6332     # happens in config.h.
6333     if [ $_restrict != restrict ]; then
6334         check_cc <<EOF || add_cflags -FIstdlib.h
6335 __declspec($_restrict) void* foo(int);
6336 EOF
6337     fi
6338     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6339     # Issue has been fixed in MSVC v19.00.24218.
6340     check_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6341         check_cflags -d2SSAOptimizer-
6342     # enable utf-8 source processing on VS2015 U2 and newer
6343     check_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6344         add_cflags -utf-8
6345 fi
6346
6347 for pfx in "" host_; do
6348     varname=${pfx%_}cc_type
6349     eval "type=\$$varname"
6350     if [ $type = "msvc" ]; then
6351         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6352 static inline int foo(int a) { return a; }
6353 EOF
6354     fi
6355 done
6356
6357 case $as_type in
6358     clang)
6359         add_asflags -Qunused-arguments
6360     ;;
6361 esac
6362
6363 case $ld_type in
6364     clang)
6365         check_ldflags -Qunused-arguments
6366     ;;
6367 esac
6368
6369 case $target_os in
6370     osf1)
6371         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
6372     ;;
6373 esac
6374
6375 enable frame_thread_encoder
6376
6377 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6378
6379 check_deps $CONFIG_LIST       \
6380            $CONFIG_EXTRA      \
6381            $HAVE_LIST         \
6382            $ALL_COMPONENTS    \
6383
6384 enabled threads && ! enabled pthreads && ! enabled atomics_native && die "non pthread threading without atomics not supported, try adding --enable-pthreads or --cpu=i486 or higher if you are on x86"
6385
6386
6387 if test $target_os = "haiku"; then
6388     disable memalign
6389     disable posix_memalign
6390 fi
6391
6392 enabled_all dxva2 dxva2api_cobj CoTaskMemFree &&
6393     prepend ffmpeg_libs $($ldflags_filter "-lole32") &&
6394     enable dxva2_lib
6395
6396 # add_dep lib dep
6397 # -> enable ${lib}_deps_${dep}
6398 # -> add $dep to ${lib}_deps only once
6399 add_dep() {
6400     lib=$1
6401     dep=$2
6402     enabled "${lib}_deps_${dep}" && return 0
6403     enable  "${lib}_deps_${dep}"
6404     prepend "${lib}_deps" $dep
6405 }
6406
6407 # merge deps lib components
6408 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
6409 merge_deps() {
6410     lib=$1
6411     shift
6412     for comp in $*; do
6413         enabled $comp || continue
6414         eval "dep=\"\$${comp}_deps\""
6415         for d in $dep; do
6416             add_dep $lib $d
6417         done
6418     done
6419 }
6420
6421 merge_deps libavfilter $FILTER_LIST
6422
6423 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6424
6425 for thread in $THREADS_LIST; do
6426     if enabled $thread; then
6427         test -n "$thread_type" &&
6428             die "ERROR: Only one thread type must be selected." ||
6429             thread_type="$thread"
6430     fi
6431 done
6432
6433 if disabled stdatomic_h; then
6434     if enabled atomics_gcc; then
6435         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6436     elif enabled atomics_win32; then
6437         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6438     elif enabled atomics_suncc; then
6439         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6440     elif enabled pthreads; then
6441         add_compat atomics/pthread/stdatomic.o
6442         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6443     else
6444         enabled threads && die "Threading is enabled, but no atomics are available"
6445         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6446     fi
6447 fi
6448
6449 # Check if requested libraries were found.
6450 for lib in $AUTODETECT_LIBS; do
6451     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6452 done
6453
6454 enabled zlib && add_cppflags -DZLIB_CONST
6455
6456 # conditional library dependencies, in linking order
6457 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6458 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6459 enabled aresample_filter    && prepend avfilter_deps "swresample"
6460 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6461 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6462 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6463 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6464 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6465 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6466 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6467 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6468 enabled pan_filter          && prepend avfilter_deps "swresample"
6469 enabled pp_filter           && prepend avfilter_deps "postproc"
6470 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6471 enabled resample_filter && prepend avfilter_deps "avresample"
6472 enabled sab_filter          && prepend avfilter_deps "swscale"
6473 enabled scale_filter    && prepend avfilter_deps "swscale"
6474 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6475 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6476 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6477 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6478 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6479 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6480 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6481 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6482 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6483
6484 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6485
6486 enabled opus_decoder    && prepend avcodec_deps "swresample"
6487
6488 expand_deps(){
6489     lib_deps=${1}_deps
6490     eval "deps=\$$lib_deps"
6491     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6492     unique $lib_deps
6493 }
6494
6495 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6496 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6497
6498 map 'expand_deps $v' $LIBRARY_LIST
6499
6500 license="LGPL version 2.1 or later"
6501 if enabled nonfree; then
6502     license="nonfree and unredistributable"
6503 elif enabled gplv3; then
6504     license="GPL version 3 or later"
6505 elif enabled lgplv3; then
6506     license="LGPL version 3 or later"
6507 elif enabled gpl; then
6508     license="GPL version 2 or later"
6509 fi
6510
6511 if test "$quiet" != "yes"; then
6512
6513 echo "install prefix            $prefix"
6514 echo "source path               $source_path"
6515 echo "C compiler                $cc"
6516 echo "C library                 $libc_type"
6517 if test "$host_cc" != "$cc"; then
6518     echo "host C compiler           $host_cc"
6519     echo "host C library            $host_libc_type"
6520 fi
6521 echo "ARCH                      $arch ($cpu)"
6522 if test "$build_suffix" != ""; then
6523     echo "build suffix              $build_suffix"
6524 fi
6525 if test "$progs_suffix" != ""; then
6526     echo "progs suffix              $progs_suffix"
6527 fi
6528 if test "$extra_version" != ""; then
6529     echo "version string suffix     $extra_version"
6530 fi
6531 echo "big-endian                ${bigendian-no}"
6532 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6533 if enabled x86; then
6534     echo "${yasmexe}                      ${yasm-no}"
6535     echo "MMX enabled               ${mmx-no}"
6536     echo "MMXEXT enabled            ${mmxext-no}"
6537     echo "3DNow! enabled            ${amd3dnow-no}"
6538     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6539     echo "SSE enabled               ${sse-no}"
6540     echo "SSSE3 enabled             ${ssse3-no}"
6541     echo "AESNI enabled             ${aesni-no}"
6542     echo "AVX enabled               ${avx-no}"
6543     echo "XOP enabled               ${xop-no}"
6544     echo "FMA3 enabled              ${fma3-no}"
6545     echo "FMA4 enabled              ${fma4-no}"
6546     echo "i686 features enabled     ${i686-no}"
6547     echo "CMOV is fast              ${fast_cmov-no}"
6548     echo "EBX available             ${ebx_available-no}"
6549     echo "EBP available             ${ebp_available-no}"
6550 fi
6551 if enabled aarch64; then
6552     echo "NEON enabled              ${neon-no}"
6553     echo "VFP enabled               ${vfp-no}"
6554 fi
6555 if enabled arm; then
6556     echo "ARMv5TE enabled           ${armv5te-no}"
6557     echo "ARMv6 enabled             ${armv6-no}"
6558     echo "ARMv6T2 enabled           ${armv6t2-no}"
6559     echo "VFP enabled               ${vfp-no}"
6560     echo "NEON enabled              ${neon-no}"
6561     echo "THUMB enabled             ${thumb-no}"
6562 fi
6563 if enabled mips; then
6564     echo "MIPS FPU enabled          ${mipsfpu-no}"
6565     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6566     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6567     echo "MIPS MSA enabled          ${msa-no}"
6568     echo "LOONGSON MMI enabled      ${mmi-no}"
6569 fi
6570 if enabled ppc; then
6571     echo "AltiVec enabled           ${altivec-no}"
6572     echo "VSX enabled               ${vsx-no}"
6573     echo "POWER8 enabled            ${power8-no}"
6574     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6575     echo "dcbzl available           ${dcbzl-no}"
6576 fi
6577 echo "debug symbols             ${debug-no}"
6578 echo "strip symbols             ${stripping-no}"
6579 echo "optimize for size         ${small-no}"
6580 echo "optimizations             ${optimizations-no}"
6581 echo "static                    ${static-no}"
6582 echo "shared                    ${shared-no}"
6583 echo "postprocessing support    ${postproc-no}"
6584 echo "network support           ${network-no}"
6585 echo "threading support         ${thread_type-no}"
6586 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6587 echo "texi2html enabled         ${texi2html-no}"
6588 echo "perl enabled              ${perl-no}"
6589 echo "pod2man enabled           ${pod2man-no}"
6590 echo "makeinfo enabled          ${makeinfo-no}"
6591 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6592 test -n "$random_seed" &&
6593     echo "random seed               ${random_seed}"
6594 echo
6595
6596 echo "External libraries:"
6597 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_in_columns
6598 echo
6599
6600 echo "External libraries providing hardware acceleration:"
6601 print_enabled '' $HWACCEL_LIBRARY_LIST | print_in_columns
6602 echo
6603
6604 echo "Libraries:"
6605 print_enabled '' $LIBRARY_LIST | print_in_columns
6606 echo
6607
6608 echo "Programs:"
6609 print_enabled '' $PROGRAM_LIST | print_in_columns
6610 echo
6611
6612 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6613     echo "Enabled ${type}s:"
6614     eval list=\$$(toupper $type)_LIST
6615     print_enabled '_*' $list | print_in_columns
6616     echo
6617 done
6618
6619 echo "License: $license"
6620
6621 echo "Creating configuration files ..."
6622
6623 fi # test "$quiet" != "yes"
6624
6625 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6626
6627 enabled stripping || strip="echo skipping strip"
6628
6629 config_files="$TMPH config.mak doc/config.texi"
6630
6631 cat > config.mak <<EOF
6632 # Automatically generated by configure - do not modify!
6633 ifndef FFMPEG_CONFIG_MAK
6634 FFMPEG_CONFIG_MAK=1
6635 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6636 prefix=$prefix
6637 LIBDIR=\$(DESTDIR)$libdir
6638 SHLIBDIR=\$(DESTDIR)$shlibdir
6639 INCDIR=\$(DESTDIR)$incdir
6640 BINDIR=\$(DESTDIR)$bindir
6641 DATADIR=\$(DESTDIR)$datadir
6642 DOCDIR=\$(DESTDIR)$docdir
6643 MANDIR=\$(DESTDIR)$mandir
6644 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6645 INSTALL_NAME_DIR=$install_name_dir
6646 SRC_PATH=$source_path
6647 SRC_LINK=$source_link
6648 ifndef MAIN_MAKEFILE
6649 SRC_PATH:=\$(SRC_PATH:.%=..%)
6650 endif
6651 CC_IDENT=$cc_ident
6652 ARCH=$arch
6653 INTRINSICS=$intrinsics
6654 CC=$cc
6655 CXX=$cxx
6656 AS=$as
6657 OBJCC=$objcc
6658 LD=$ld
6659 DEPCC=$dep_cc
6660 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6661 DEPAS=$as
6662 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6663 YASM=$yasmexe
6664 DEPYASM=$yasmexe
6665 AR=$ar
6666 ARFLAGS=$arflags
6667 AR_O=$ar_o
6668 RANLIB=$ranlib
6669 STRIP=$strip
6670 CP=cp -p
6671 LN_S=$ln_s
6672 CPPFLAGS=$CPPFLAGS
6673 CFLAGS=$CFLAGS
6674 CXXFLAGS=$CXXFLAGS
6675 OBJCFLAGS=$OBJCFLAGS
6676 ASFLAGS=$ASFLAGS
6677 AS_C=$AS_C
6678 AS_O=$AS_O
6679 OBJCC_C=$OBJCC_C
6680 OBJCC_E=$OBJCC_E
6681 OBJCC_O=$OBJCC_O
6682 CC_C=$CC_C
6683 CC_E=$CC_E
6684 CC_O=$CC_O
6685 CXX_C=$CXX_C
6686 CXX_O=$CXX_O
6687 LD_O=$LD_O
6688 LD_LIB=$LD_LIB
6689 LD_PATH=$LD_PATH
6690 DLLTOOL=$dlltool
6691 WINDRES=$windres
6692 DEPWINDRES=$dep_cc
6693 DOXYGEN=$doxygen
6694 LDFLAGS=$LDFLAGS
6695 LDEXEFLAGS=$LDEXEFLAGS
6696 LDLIBFLAGS=$LDLIBFLAGS
6697 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
6698 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
6699 YASMFLAGS=$YASMFLAGS
6700 BUILDSUF=$build_suffix
6701 PROGSSUF=$progs_suffix
6702 FULLNAME=$FULLNAME
6703 LIBPREF=$LIBPREF
6704 LIBSUF=$LIBSUF
6705 LIBNAME=$LIBNAME
6706 SLIBPREF=$SLIBPREF
6707 SLIBSUF=$SLIBSUF
6708 EXESUF=$EXESUF
6709 EXTRA_VERSION=$extra_version
6710 CCDEP=$CCDEP
6711 CXXDEP=$CXXDEP
6712 CCDEP_FLAGS=$CCDEP_FLAGS
6713 ASDEP=$ASDEP
6714 ASDEP_FLAGS=$ASDEP_FLAGS
6715 CC_DEPFLAGS=$CC_DEPFLAGS
6716 AS_DEPFLAGS=$AS_DEPFLAGS
6717 HOSTCC=$host_cc
6718 HOSTLD=$host_ld
6719 HOSTCFLAGS=$host_cflags
6720 HOSTCPPFLAGS=$host_cppflags
6721 HOSTEXESUF=$HOSTEXESUF
6722 HOSTLDFLAGS=$host_ldflags
6723 HOSTLIBS=$host_libs
6724 DEPHOSTCC=$host_cc
6725 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
6726 HOSTCCDEP=$HOSTCCDEP
6727 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
6728 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
6729 HOSTCC_C=$HOSTCC_C
6730 HOSTCC_O=$HOSTCC_O
6731 HOSTLD_O=$HOSTLD_O
6732 TARGET_EXEC=$target_exec $target_exec_args
6733 TARGET_PATH=$target_path
6734 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
6735 CFLAGS-ffplay=${sdl2_cflags}
6736 CFLAGS_HEADERS=$CFLAGS_HEADERS
6737 ZLIB=$($ldflags_filter -lz)
6738 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
6739 EXTRALIBS=$extralibs
6740 COMPAT_OBJS=$compat_objs
6741 INSTALL=$install
6742 LIBTARGET=${LIBTARGET}
6743 SLIBNAME=${SLIBNAME}
6744 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
6745 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
6746 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
6747 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
6748 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
6749 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
6750 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
6751 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
6752 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
6753 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
6754 NOREDZONE_FLAGS=$noredzone_flags
6755 EOF
6756
6757 get_version(){
6758     lcname=lib${1}
6759     name=$(toupper $lcname)
6760     file=$source_path/$lcname/version.h
6761     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
6762     enabled raise_major && eval ${name}_VERSION_MAJOR=$((${name}_VERSION_MAJOR+100))
6763     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
6764     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
6765     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
6766     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
6767 }
6768
6769 map 'get_version $v' $LIBRARY_LIST
6770
6771 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> config.mak' $LIBRARY_LIST
6772
6773 print_program_libs(){
6774     eval "program_libs=\$${1}_libs"
6775     eval echo "LIBS-${1}=${program_libs}" >> config.mak
6776 }
6777
6778 map 'print_program_libs $v' $PROGRAM_LIST
6779
6780 cat > $TMPH <<EOF
6781 /* Automatically generated by configure - do not modify! */
6782 #ifndef FFMPEG_CONFIG_H
6783 #define FFMPEG_CONFIG_H
6784 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
6785 #define FFMPEG_LICENSE "$(c_escape $license)"
6786 #define CONFIG_THIS_YEAR 2017
6787 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
6788 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
6789 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
6790 #define av_restrict $_restrict
6791 #define EXTERN_PREFIX "${extern_prefix}"
6792 #define EXTERN_ASM ${extern_prefix}
6793 #define BUILDSUF "$build_suffix"
6794 #define SLIBSUF "$SLIBSUF"
6795 #define HAVE_MMX2 HAVE_MMXEXT
6796 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
6797 EOF
6798
6799 test -n "$assert_level" &&
6800     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
6801
6802 test -n "$malloc_prefix" &&
6803     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
6804
6805 if enabled yasm; then
6806     append config_files $TMPASM
6807     printf '' >$TMPASM
6808 fi
6809
6810 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
6811
6812
6813 mkdir -p doc
6814 mkdir -p tests
6815 mkdir -p tests/api
6816 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
6817
6818 print_config ARCH_   "$config_files" $ARCH_LIST
6819 print_config HAVE_   "$config_files" $HAVE_LIST
6820 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
6821                                      $CONFIG_EXTRA      \
6822                                      $ALL_COMPONENTS    \
6823
6824 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
6825 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
6826
6827 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
6828 cp_if_changed $TMPH config.h
6829 touch .config
6830
6831 enabled yasm && cp_if_changed $TMPASM config.asm
6832
6833 cat > $TMPH <<EOF
6834 /* Generated by ffconf */
6835 #ifndef AVUTIL_AVCONFIG_H
6836 #define AVUTIL_AVCONFIG_H
6837 EOF
6838
6839 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
6840
6841 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
6842
6843 cp_if_changed $TMPH libavutil/avconfig.h
6844
6845 # generate the lists of enabled components
6846 print_enabled_components(){
6847     file=$1
6848     struct_name=$2
6849     name=$3
6850     shift 3
6851     echo "static const $struct_name *$name[] = {" > $TMPH
6852     for c in $*; do
6853         enabled $c && printf "    &ff_%s,\n" $c >> $TMPH
6854     done
6855     echo "    NULL };" >> $TMPH
6856     cp_if_changed $TMPH $file
6857 }
6858
6859 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
6860 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
6861
6862 if test -n "$WARNINGS"; then
6863     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
6864     enabled fatal_warnings && exit 1
6865 fi
6866
6867 # build pkg-config files
6868
6869 lib_version(){
6870     eval printf "\"lib${1}${build_suffix} >= \$LIB$(toupper ${1})_VERSION, \""
6871 }
6872
6873 pkgconfig_generate(){
6874     name=$1
6875     shortname=${name#lib}${build_suffix}
6876     comment=$2
6877     version=$3
6878     libs=$4
6879     requires=$(map 'lib_version $v' $(eval echo \$${name#lib}_deps))
6880     requires=${requires%, }
6881     enabled ${name#lib} || return 0
6882     mkdir -p $name
6883     cat <<EOF > $name/$name${build_suffix}.pc
6884 prefix=$prefix
6885 exec_prefix=\${prefix}
6886 libdir=$libdir
6887 includedir=$incdir
6888
6889 Name: $name
6890 Description: $comment
6891 Version: $version
6892 Requires: $(enabled shared || echo $requires)
6893 Requires.private: $(enabled shared && echo $requires)
6894 Conflicts:
6895 Libs: -L\${libdir} $(enabled rpath && echo "-Wl,-rpath,\${libdir}") -l${shortname} $(enabled shared || echo $libs)
6896 Libs.private: $(enabled shared && echo $libs)
6897 Cflags: -I\${includedir}
6898 EOF
6899
6900 mkdir -p doc/examples/pc-uninstalled
6901 includedir=${source_path}
6902 [ "$includedir" = . ] && includedir="\${pcfiledir}/../../.."
6903     cat <<EOF > doc/examples/pc-uninstalled/${name}-uninstalled.pc
6904 prefix=
6905 exec_prefix=
6906 libdir=\${pcfiledir}/../../../$name
6907 includedir=${includedir}
6908
6909 Name: $name
6910 Description: $comment
6911 Version: $version
6912 Requires: $requires
6913 Conflicts:
6914 Libs: -L\${libdir} -Wl,-rpath,\${libdir} -l${shortname} $(enabled shared || echo $libs)
6915 Cflags: -I\${includedir}
6916 EOF
6917 }
6918
6919 pkgconfig_generate libavutil     "FFmpeg utility library"               "$LIBAVUTIL_VERSION"     "$LIBRT $LIBM"
6920 pkgconfig_generate libavcodec    "FFmpeg codec library"                 "$LIBAVCODEC_VERSION"    "$extralibs"
6921 pkgconfig_generate libavformat   "FFmpeg container format library"      "$LIBAVFORMAT_VERSION"   "$extralibs"
6922 pkgconfig_generate libavdevice   "FFmpeg device handling library"       "$LIBAVDEVICE_VERSION"   "$extralibs"
6923 pkgconfig_generate libavfilter   "FFmpeg audio/video filtering library" "$LIBAVFILTER_VERSION"   "$extralibs"
6924 pkgconfig_generate libpostproc   "FFmpeg postprocessing library"        "$LIBPOSTPROC_VERSION"   ""
6925 pkgconfig_generate libavresample "Libav audio resampling library"       "$LIBAVRESAMPLE_VERSION" "$LIBM"
6926 pkgconfig_generate libswscale    "FFmpeg image rescaling library"       "$LIBSWSCALE_VERSION"    "$LIBM"
6927 pkgconfig_generate libswresample "FFmpeg audio resampling library"      "$LIBSWRESAMPLE_VERSION" "$LIBM $LIBSOXR"