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" ] || [ $cl_major_ver -ge 18 ]; then
3642             cc_default="cl"
3643             cxx_default="cl"
3644         else
3645             cc_default="c99wrap cl"
3646             cxx_default="c99wrap cl"
3647         fi
3648         ld_default="$source_path/compat/windows/mslink"
3649         nm_default="dumpbin -symbols"
3650         ar_default="lib"
3651         case "$arch" in
3652         arm*)
3653             as_default="armasm"
3654             ;;
3655         esac
3656         target_os_default="win32"
3657         # Use a relative path for TMPDIR. This makes sure all the
3658         # ffconf temp files are written with a relative path, avoiding
3659         # issues with msys/win32 path conversion for MSVC parameters
3660         # such as -Fo<file> or -out:<file>.
3661         TMPDIR=.
3662     ;;
3663     icl)
3664         cc_default="icl"
3665         ld_default="xilink"
3666         nm_default="dumpbin -symbols"
3667         ar_default="xilib"
3668         target_os_default="win32"
3669         TMPDIR=.
3670     ;;
3671     gcov)
3672         add_cflags  -fprofile-arcs -ftest-coverage
3673         add_ldflags -fprofile-arcs -ftest-coverage
3674     ;;
3675     llvm-cov)
3676         add_cflags -fprofile-arcs -ftest-coverage
3677         add_ldflags --coverage
3678     ;;
3679     hardened)
3680         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3681         add_cflags   -fno-strict-overflow -fstack-protector-all
3682         add_ldflags  -Wl,-z,relro -Wl,-z,now
3683         add_cflags   -fPIE
3684         add_ldexeflags -fPIE -pie
3685     ;;
3686     ?*)
3687         die "Unknown toolchain $toolchain"
3688     ;;
3689 esac
3690
3691 test -n "$cross_prefix" && enable cross_compile
3692
3693 if enabled cross_compile; then
3694     test -n "$arch" && test -n "$target_os" ||
3695         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3696 fi
3697
3698 ar_default="${cross_prefix}${ar_default}"
3699 cc_default="${cross_prefix}${cc_default}"
3700 cxx_default="${cross_prefix}${cxx_default}"
3701 nm_default="${cross_prefix}${nm_default}"
3702 pkg_config_default="${cross_prefix}${pkg_config_default}"
3703 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3704     ranlib_default="${cross_prefix}${ranlib_default} -D"
3705 else
3706     ranlib_default="${cross_prefix}${ranlib_default}"
3707 fi
3708 strip_default="${cross_prefix}${strip_default}"
3709 windres_default="${cross_prefix}${windres_default}"
3710
3711 sysinclude_default="${sysroot}/usr/include"
3712
3713 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3714     target_exec target_os yasmexe
3715 enabled cross_compile || host_cc_default=$cc
3716 set_default host_cc
3717
3718 pkg_config_fail_message=""
3719 if ! $pkg_config --version >/dev/null 2>&1; then
3720     warn "$pkg_config not found, library detection may fail."
3721     pkg_config=false
3722 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3723     pkg_config_fail_message="
3724 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3725 fi
3726
3727 if test $doxygen != $doxygen_default && \
3728   ! $doxygen --version >/dev/null 2>&1; then
3729     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3730 fi
3731
3732 exesuf() {
3733     case $1 in
3734         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3735     esac
3736 }
3737
3738 EXESUF=$(exesuf $target_os)
3739 HOSTEXESUF=$(exesuf $host_os)
3740
3741 # set temporary file name
3742 : ${TMPDIR:=$TEMPDIR}
3743 : ${TMPDIR:=$TMP}
3744 : ${TMPDIR:=/tmp}
3745
3746 if [ -n "$tempprefix" ] ; then
3747     mktemp(){
3748         echo $tempprefix.${HOSTNAME}.${UID}
3749     }
3750 elif ! check_cmd mktemp -u XXXXXX; then
3751     # simple replacement for missing mktemp
3752     # NOT SAFE FOR GENERAL USE
3753     mktemp(){
3754         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3755     }
3756 fi
3757
3758 tmpfile(){
3759     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3760         (set -C; exec > $tmp) 2>/dev/null ||
3761         die "Unable to create temporary file in $TMPDIR."
3762     append TMPFILES $tmp
3763     eval $1=$tmp
3764 }
3765
3766 trap 'rm -f -- $TMPFILES' EXIT
3767
3768 tmpfile TMPASM .asm
3769 tmpfile TMPC   .c
3770 tmpfile TMPCPP .cpp
3771 tmpfile TMPE   $EXESUF
3772 tmpfile TMPH   .h
3773 tmpfile TMPM   .m
3774 tmpfile TMPO   .o
3775 tmpfile TMPS   .S
3776 tmpfile TMPSH  .sh
3777 tmpfile TMPV   .ver
3778
3779 unset -f mktemp
3780
3781 chmod +x $TMPE
3782
3783 # make sure we can execute files in $TMPDIR
3784 cat > $TMPSH 2>> $logfile <<EOF
3785 #! /bin/sh
3786 EOF
3787 chmod +x $TMPSH >> $logfile 2>&1
3788 if ! $TMPSH >> $logfile 2>&1; then
3789     cat <<EOF
3790 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3791 variable to another directory and make sure that it is not mounted noexec.
3792 EOF
3793     die "Sanity test failed."
3794 fi
3795
3796 armasm_flags(){
3797     for flag; do
3798         case $flag in
3799             # Filter out MSVC cl.exe options from cflags that shouldn't
3800             # be passed to gas-preprocessor
3801             -M[TD]*)                                            ;;
3802             *)                  echo $flag                      ;;
3803         esac
3804    done
3805 }
3806
3807 ccc_flags(){
3808     for flag; do
3809         case $flag in
3810             -std=c99)           echo -c99                       ;;
3811             -mcpu=*)            echo -arch ${flag#*=}           ;;
3812             -mieee)             echo -ieee                      ;;
3813             -O*|-fast)          echo $flag                      ;;
3814             -fno-math-errno)    echo -assume nomath_errno       ;;
3815             -g)                 echo -g3                        ;;
3816             -Wall)              echo -msg_enable level2         ;;
3817             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3818             -Wl,*)              echo $flag                      ;;
3819             -f*|-W*)                                            ;;
3820             *)                  echo $flag                      ;;
3821         esac
3822    done
3823 }
3824
3825 cparser_flags(){
3826     for flag; do
3827         case $flag in
3828             -Wno-switch)             echo -Wno-switch-enum ;;
3829             -Wno-format-zero-length) ;;
3830             -Wdisabled-optimization) ;;
3831             -Wno-pointer-sign)       echo -Wno-other ;;
3832             *)                       echo $flag ;;
3833         esac
3834     done
3835 }
3836
3837 msvc_common_flags(){
3838     for flag; do
3839         case $flag in
3840             # In addition to specifying certain flags under the compiler
3841             # specific filters, they must be specified here as well or else the
3842             # generic catch all at the bottom will print the original flag.
3843             -Wall)                ;;
3844             -std=c99)             ;;
3845             # Common flags
3846             -fomit-frame-pointer) ;;
3847             -g)                   echo -Z7 ;;
3848             -fno-math-errno)      ;;
3849             -fno-common)          ;;
3850             -fno-signed-zeros)    ;;
3851             -fPIC)                ;;
3852             -mthumb)              ;;
3853             -march=*)             ;;
3854             -lz)                  echo zlib.lib ;;
3855             -lavicap32)           echo vfw32.lib user32.lib ;;
3856             -lx264)               echo libx264.lib ;;
3857             -lstdc++)             ;;
3858             -l*)                  echo ${flag#-l}.lib ;;
3859             -LARGEADDRESSAWARE)   echo $flag ;;
3860             -L*)                  echo -libpath:${flag#-L} ;;
3861             *)                    echo $flag ;;
3862         esac
3863     done
3864 }
3865
3866 msvc_flags(){
3867     msvc_common_flags "$@"
3868     for flag; do
3869         case $flag in
3870             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3871                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3872                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3873                                        -wd4307 \
3874                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
3875         esac
3876     done
3877 }
3878
3879 icl_flags(){
3880     msvc_common_flags "$@"
3881     for flag; do
3882         case $flag in
3883             # Despite what Intel's documentation says -Wall, which is supported
3884             # on Windows, does enable remarks so disable them here.
3885             -Wall)                echo $flag -Qdiag-disable:remark ;;
3886             -std=c99)             echo -Qstd=c99 ;;
3887             -flto)                echo -ipo ;;
3888         esac
3889     done
3890 }
3891
3892 icc_flags(){
3893     for flag; do
3894         case $flag in
3895             -flto)                echo -ipo ;;
3896             *)                    echo $flag ;;
3897         esac
3898     done
3899 }
3900
3901 pgi_flags(){
3902     for flag; do
3903         case $flag in
3904             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3905             -fomit-frame-pointer) echo -Mnoframe ;;
3906             -g)                   echo -gopt ;;
3907             *)                    echo $flag ;;
3908         esac
3909     done
3910 }
3911
3912 suncc_flags(){
3913     for flag; do
3914         case $flag in
3915             -march=*|-mcpu=*)
3916                 case "${flag#*=}" in
3917                     native)                   echo -xtarget=native       ;;
3918                     v9|niagara)               echo -xarch=sparc          ;;
3919                     ultrasparc)               echo -xarch=sparcvis       ;;
3920                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3921                     i586|pentium)             echo -xchip=pentium        ;;
3922                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3923                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3924                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3925                     pentium4*)          echo -xtarget=pentium4           ;;
3926                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3927                     *-sse3)             echo -xarch=sse3                 ;;
3928                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3929                     bonnell)                   echo -xarch=ssse3         ;;
3930                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3931                     westmere)                  echo -xtarget=westmere    ;;
3932                     silvermont)                echo -xarch=sse4_2        ;;
3933                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3934                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
3935                                                echo -xarch=avx           ;;
3936                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3937                     btver1)                    echo -xarch=amdsse4a      ;;
3938                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
3939                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3940                     k8|opteron|athlon64|athlon-fx)
3941                                                echo -xarch=sse2a         ;;
3942                     athlon*)                   echo -xarch=pentium_proa  ;;
3943                 esac
3944                 ;;
3945             -std=c99)             echo -xc99              ;;
3946             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3947             -fPIC)                echo -KPIC -xcode=pic32 ;;
3948             -W*,*)                echo $flag              ;;
3949             -f*-*|-W*|-mimpure-text)                      ;;
3950             -shared)              echo -G                 ;;
3951             *)                    echo $flag              ;;
3952         esac
3953     done
3954 }
3955
3956 tms470_flags(){
3957     for flag; do
3958         case $flag in
3959             -march=*|-mcpu=*)
3960                 case "${flag#*=}" in
3961                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3962                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3963                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3964                     armv6*|arm11*)          echo -mv=6   ;;
3965                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3966                                             echo -mv=5e  ;;
3967                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3968                 esac
3969                 ;;
3970             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3971             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3972             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3973             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3974             -msoft-float)   echo --float_support=vfplib       ;;
3975             -O[0-3]|-mf=*)  echo $flag                        ;;
3976             -g)             echo -g -mn                       ;;
3977             -pds=*)         echo $flag                        ;;
3978             -D*|-I*)        echo $flag                        ;;
3979             --gcc|--abi=*)  echo $flag                        ;;
3980             -me)            echo $flag                        ;;
3981         esac
3982     done
3983 }
3984
3985 probe_cc(){
3986     pfx=$1
3987     _cc=$2
3988     first=$3
3989
3990     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3991     unset _ld_o _ldflags _ld_lib _ld_path
3992     unset _depflags _DEPCMD _DEPFLAGS
3993     _flags_filter=echo
3994
3995     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3996         true # no-op to avoid reading stdin in following checks
3997     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3998         _type=llvm_gcc
3999         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4000         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4001         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4002         _cflags_speed='-O3'
4003         _cflags_size='-Os'
4004     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4005         _type=gcc
4006         gcc_version=$($_cc --version | head -n1)
4007         gcc_basever=$($_cc -dumpversion)
4008         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4009         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4010         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4011         case $gcc_basever in
4012             2) ;;
4013             2.*) ;;
4014             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4015         esac
4016         if [ "$first" = true ]; then
4017             case $gcc_basever in
4018                 4.2*)
4019                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4020             esac
4021         fi
4022         _cflags_speed='-O3'
4023         _cflags_size='-Os'
4024     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4025         _type=icc
4026         _ident=$($_cc --version | head -n1)
4027         _depflags='-MMD'
4028         _cflags_speed='-O3'
4029         _cflags_size='-Os'
4030         _cflags_noopt='-O1'
4031         _flags_filter=icc_flags
4032     elif $_cc -v 2>&1 | grep -q xlc; then
4033         _type=xlc
4034         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4035         _cflags_speed='-O5'
4036         _cflags_size='-O5 -qcompact'
4037     elif $_cc -V 2>/dev/null | grep -q Compaq; then
4038         _type=ccc
4039         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
4040         _DEPFLAGS='-M'
4041         _cflags_speed='-fast'
4042         _cflags_size='-O1'
4043         _flags_filter=ccc_flags
4044     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4045         test -d "$sysroot" || die "No valid sysroot specified."
4046         _type=armcc
4047         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4048         armcc_conf="$PWD/armcc.conf"
4049         $_cc --arm_linux_configure                 \
4050              --arm_linux_config_file="$armcc_conf" \
4051              --configure_sysroot="$sysroot"        \
4052              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4053              die "Error creating armcc configuration file."
4054         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4055         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4056         as_default="${cross_prefix}gcc"
4057         _depflags='-MMD'
4058         _cflags_speed='-O3'
4059         _cflags_size='-Os'
4060     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
4061         _type=tms470
4062         _ident=$($_cc -version | head -n1 | tr -s ' ')
4063         _flags='--gcc --abi=eabi -me'
4064         _cc_e='-ppl -fe=$@'
4065         _cc_o='-fe=$@'
4066         _depflags='-ppa -ppd=$(@:.o=.d)'
4067         _cflags_speed='-O3 -mf=5'
4068         _cflags_size='-O3 -mf=2'
4069         _flags_filter=tms470_flags
4070     elif $_cc -v 2>&1 | grep -q clang; then
4071         _type=clang
4072         _ident=$($_cc --version 2>/dev/null | head -n1)
4073         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4074         _cflags_speed='-O3'
4075         _cflags_size='-Oz'
4076     elif $_cc -V 2>&1 | grep -q Sun; then
4077         _type=suncc
4078         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4079         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4080         _DEPFLAGS='-xM1 -xc99'
4081         _ldflags='-std=c99'
4082         _cflags_speed='-O5'
4083         _cflags_size='-O5 -xspace'
4084         _flags_filter=suncc_flags
4085     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4086         _type=pathscale
4087         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4088         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4089         _cflags_speed='-O2'
4090         _cflags_size='-Os'
4091         _flags_filter='filter_out -Wdisabled-optimization'
4092     elif $_cc -v 2>&1 | grep -q Open64; then
4093         _type=open64
4094         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4095         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4096         _cflags_speed='-O2'
4097         _cflags_size='-Os'
4098         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4099     elif $_cc -V 2>&1 | grep -q Portland; then
4100         _type=pgi
4101         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
4102         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
4103         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
4104         _cflags_size="-O2 -Munroll=c:1 $opt_common"
4105         _cflags_noopt="-O"
4106         _flags_filter=pgi_flags
4107     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4108         _type=armasm
4109         _ident=$($_cc | head -n1)
4110         # 4509: "This form of conditional instruction is deprecated"
4111         _flags="-nologo -ignore 4509"
4112         _flags_filter=armasm_flags
4113     elif $_cc 2>&1 | grep -q Intel; then
4114         _type=icl
4115         _ident=$($_cc 2>&1 | head -n1)
4116         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4117         # Not only is O3 broken on 13.x+ but it is slower on all previous
4118         # versions (tested) as well.
4119         _cflags_speed="-O2"
4120         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4121         if $_cc 2>&1 | grep -q Linker; then
4122             _ld_o='-out:$@'
4123         else
4124             _ld_o='-Fe$@'
4125         fi
4126         _cc_o='-Fo$@'
4127         _cc_e='-P'
4128         _flags_filter=icl_flags
4129         _ld_lib='lib%.a'
4130         _ld_path='-libpath:'
4131         # -Qdiag-error to make icl error when seeing certain unknown arguments
4132         _flags='-nologo -Qdiag-error:4044,10157'
4133         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4134         # with MSVC which enables it by default.
4135         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4136         disable stripping
4137     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4138         # lld can emulate multiple different linkers; in ms link.exe mode,
4139         # the -? parameter gives the help output which contains an identifyable
4140         # string, while it gives an error in other modes.
4141         _type=lld-link
4142         # The link.exe mode doesn't have a switch for getting the version,
4143         # but we can force it back to gnu mode and get the version from there.
4144         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4145         _ld_o='-out:$@'
4146         _flags_filter=msvc_flags
4147         _ld_lib='lib%.a'
4148         _ld_path='-libpath:'
4149     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4150         _type=msvc
4151         _ident=$($_cc 2>&1 | head -n1)
4152         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4153         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4154         _cflags_speed="-O2"
4155         _cflags_size="-O1"
4156         if $_cc -nologo- 2>&1 | grep -q Linker; then
4157             _ld_o='-out:$@'
4158         else
4159             _ld_o='-Fe$@'
4160         fi
4161         _cc_o='-Fo$@'
4162         _cc_e='-P -Fi$@'
4163         _flags_filter=msvc_flags
4164         _ld_lib='lib%.a'
4165         _ld_path='-libpath:'
4166         _flags='-nologo'
4167         disable stripping
4168     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4169         _type=cparser
4170         _ident=$($_cc --version | head -n1)
4171         _depflags='-MMD'
4172         _cflags_speed='-O4'
4173         _cflags_size='-O2'
4174         _flags_filter=cparser_flags
4175     fi
4176
4177     eval ${pfx}_type=\$_type
4178     eval ${pfx}_ident=\$_ident
4179 }
4180
4181 set_ccvars(){
4182     eval ${1}_C=\${_cc_c-\${${1}_C}}
4183     eval ${1}_E=\${_cc_e-\${${1}_E}}
4184     eval ${1}_O=\${_cc_o-\${${1}_O}}
4185
4186     if [ -n "$_depflags" ]; then
4187         eval ${1}_DEPFLAGS=\$_depflags
4188     else
4189         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4190         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4191         eval DEP${1}FLAGS=\$_flags
4192     fi
4193 }
4194
4195 probe_cc cc "$cc" "true"
4196 cflags_filter=$_flags_filter
4197 cflags_speed=$_cflags_speed
4198 cflags_size=$_cflags_size
4199 cflags_noopt=$_cflags_noopt
4200 add_cflags $_flags $_cflags
4201 cc_ldflags=$_ldflags
4202 set_ccvars CC
4203 set_ccvars CXX
4204
4205 probe_cc hostcc "$host_cc"
4206 host_cflags_filter=$_flags_filter
4207 add_host_cflags  $_flags $_cflags
4208 set_ccvars HOSTCC
4209
4210 test -n "$cc_type" && enable $cc_type ||
4211     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4212
4213 : ${as_default:=$cc}
4214 : ${objcc_default:=$cc}
4215 : ${dep_cc_default:=$cc}
4216 : ${ld_default:=$cc}
4217 : ${host_ld_default:=$host_cc}
4218 set_default ar as objcc dep_cc ld ln_s host_ld windres
4219
4220 probe_cc as "$as"
4221 asflags_filter=$_flags_filter
4222 add_asflags $_flags $_cflags
4223 set_ccvars AS
4224
4225 probe_cc objcc "$objcc"
4226 objcflags_filter=$_flags_filter
4227 add_objcflags $_flags $_cflags
4228 set_ccvars OBJC
4229
4230 probe_cc ld "$ld"
4231 ldflags_filter=$_flags_filter
4232 add_ldflags $_flags $_ldflags
4233 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4234 LD_O=${_ld_o-$LD_O}
4235 LD_LIB=${_ld_lib-$LD_LIB}
4236 LD_PATH=${_ld_path-$LD_PATH}
4237
4238 probe_cc hostld "$host_ld"
4239 host_ldflags_filter=$_flags_filter
4240 add_host_ldflags $_flags $_ldflags
4241 HOSTLD_O=${_ld_o-$HOSTLD_O}
4242
4243 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4244     probe_cc depcc "$dep_cc"
4245     CCDEP=${_DEPCMD:-$DEPCMD}
4246     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4247     DEPCCFLAGS=$_flags
4248 fi
4249
4250 if $ar 2>&1 | grep -q Microsoft; then
4251     arflags="-nologo"
4252     ar_o='-out:$@'
4253 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
4254     arflags="rq"
4255     ar_o='$@'
4256 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
4257     arflags='-Xany -r -c'
4258     ar_o='$@'
4259 elif $ar 2>&1 | grep -q "\[D\] "; then
4260     arflags="rcD"
4261     ar_o='$@'
4262 else
4263     arflags="rc"
4264     ar_o='$@'
4265 fi
4266
4267 add_cflags $extra_cflags
4268 add_cxxflags $extra_cxxflags
4269 add_objcflags $extra_objcflags
4270 add_asflags $extra_cflags
4271
4272 if test -n "$sysroot"; then
4273     case "$cc_type" in
4274         gcc|llvm_gcc|clang)
4275             add_cppflags --sysroot="$sysroot"
4276             add_ldflags --sysroot="$sysroot"
4277 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
4278             add_cppflags -isysroot "$sysroot"
4279             add_ldflags -isysroot "$sysroot"
4280         ;;
4281         tms470)
4282             add_cppflags -I"$sysinclude"
4283             add_ldflags  --sysroot="$sysroot"
4284         ;;
4285     esac
4286 fi
4287
4288 if test "$cpu" = host; then
4289     enabled cross_compile &&
4290         die "--cpu=host makes no sense when cross-compiling."
4291
4292     case "$cc_type" in
4293         gcc|llvm_gcc)
4294             check_native(){
4295                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4296                 sed -n "/cc1.*$1=/{
4297                             s/.*$1=\\([^ ]*\\).*/\\1/
4298                             p
4299                             q
4300                         }" $TMPE
4301             }
4302             cpu=$(check_native -march || check_native -mcpu)
4303         ;;
4304         clang)
4305             check_native(){
4306                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4307                 sed -n "/cc1.*-target-cpu /{
4308                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4309                             p
4310                             q
4311                         }" $TMPE
4312             }
4313             cpu=$(check_native -march)
4314         ;;
4315     esac
4316
4317     test "${cpu:-host}" = host &&
4318         die "--cpu=host not supported with compiler $cc"
4319 fi
4320
4321 # Deal with common $arch aliases
4322 case "$arch" in
4323     aarch64|arm64)
4324         arch="aarch64"
4325     ;;
4326     arm*|iPad*|iPhone*)
4327         arch="arm"
4328     ;;
4329     mips*|IP*)
4330         case "$arch" in
4331         *el)
4332             add_cppflags -EL
4333             add_ldflags -EL
4334         ;;
4335         *eb)
4336             add_cppflags -EB
4337             add_ldflags -EB
4338         ;;
4339         esac
4340         arch="mips"
4341     ;;
4342     parisc*|hppa*)
4343         arch="parisc"
4344     ;;
4345     "Power Macintosh"|ppc*|powerpc*)
4346         arch="ppc"
4347     ;;
4348     s390|s390x)
4349         arch="s390"
4350     ;;
4351     sh4|sh)
4352         arch="sh4"
4353     ;;
4354     sun4*|sparc*)
4355         arch="sparc"
4356     ;;
4357     tilegx|tile-gx)
4358         arch="tilegx"
4359     ;;
4360     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4361         arch="x86"
4362     ;;
4363 esac
4364
4365 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4366 enable $arch
4367
4368 # Add processor-specific flags
4369 if enabled aarch64; then
4370
4371     case $cpu in
4372         armv*)
4373             cpuflags="-march=$cpu"
4374         ;;
4375         *)
4376             cpuflags="-mcpu=$cpu"
4377         ;;
4378     esac
4379
4380 elif enabled alpha; then
4381
4382     cpuflags="-mcpu=$cpu"
4383
4384 elif enabled arm; then
4385
4386     check_arm_arch() {
4387         check_cpp_condition stddef.h \
4388             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4389             $cpuflags
4390     }
4391
4392     probe_arm_arch() {
4393         if   check_arm_arch 4;        then echo armv4
4394         elif check_arm_arch 4T;       then echo armv4t
4395         elif check_arm_arch 5;        then echo armv5
4396         elif check_arm_arch 5E;       then echo armv5e
4397         elif check_arm_arch 5T;       then echo armv5t
4398         elif check_arm_arch 5TE;      then echo armv5te
4399         elif check_arm_arch 5TEJ;     then echo armv5te
4400         elif check_arm_arch 6;        then echo armv6
4401         elif check_arm_arch 6J;       then echo armv6j
4402         elif check_arm_arch 6K;       then echo armv6k
4403         elif check_arm_arch 6Z;       then echo armv6z
4404         elif check_arm_arch 6ZK;      then echo armv6zk
4405         elif check_arm_arch 6T2;      then echo armv6t2
4406         elif check_arm_arch 7;        then echo armv7
4407         elif check_arm_arch 7A  7_A;  then echo armv7-a
4408         elif check_arm_arch 7S;       then echo armv7-a
4409         elif check_arm_arch 7R  7_R;  then echo armv7-r
4410         elif check_arm_arch 7M  7_M;  then echo armv7-m
4411         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4412         elif check_arm_arch 8A  8_A;  then echo armv8-a
4413         fi
4414     }
4415
4416     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4417
4418     case $cpu in
4419         armv*)
4420             cpuflags="-march=$cpu"
4421             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4422         ;;
4423         *)
4424             cpuflags="-mcpu=$cpu"
4425             case $cpu in
4426                 cortex-a*)                               subarch=armv7a  ;;
4427                 cortex-r*)                               subarch=armv7r  ;;
4428                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4429                 arm11*)                                  subarch=armv6   ;;
4430                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4431                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4432                 *)                             subarch=$(probe_arm_arch) ;;
4433             esac
4434         ;;
4435     esac
4436
4437     case "$subarch" in
4438         armv5t*)    enable fast_clz                ;;
4439         armv[6-8]*)
4440             enable fast_clz
4441             disabled fast_unaligned || enable fast_unaligned
4442             ;;
4443     esac
4444
4445 elif enabled avr32; then
4446
4447     case $cpu in
4448         ap7[02]0[0-2])
4449             subarch="avr32_ap"
4450             cpuflags="-mpart=$cpu"
4451         ;;
4452         ap)
4453             subarch="avr32_ap"
4454             cpuflags="-march=$cpu"
4455         ;;
4456         uc3[ab]*)
4457             subarch="avr32_uc"
4458             cpuflags="-mcpu=$cpu"
4459         ;;
4460         uc)
4461             subarch="avr32_uc"
4462             cpuflags="-march=$cpu"
4463         ;;
4464     esac
4465
4466 elif enabled bfin; then
4467
4468     cpuflags="-mcpu=$cpu"
4469
4470 elif enabled mips; then
4471
4472     cpuflags="-march=$cpu"
4473
4474     if [ "$cpu" != "generic" ]; then
4475         disable mips32r2
4476         disable mips32r5
4477         disable mips64r2
4478         disable mips32r6
4479         disable mips64r6
4480         disable loongson2
4481         disable loongson3
4482
4483         case $cpu in
4484             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4485                 enable mips32r2
4486                 disable msa
4487             ;;
4488             p5600|i6400|p6600)
4489                 disable mipsdsp
4490                 disable mipsdspr2
4491             ;;
4492             loongson*)
4493                 enable loongson2
4494                 enable loongson3
4495                 enable local_aligned_8 local_aligned_16 local_aligned_32
4496                 enable simd_align_16
4497                 enable fast_64bit
4498                 enable fast_clz
4499                 enable fast_cmov
4500                 enable fast_unaligned
4501                 disable aligned_stack
4502                 disable mipsfpu
4503                 disable mipsdsp
4504                 disable mipsdspr2
4505                 case $cpu in
4506                     loongson3*)
4507                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4508                     ;;
4509                     loongson2e)
4510                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4511                     ;;
4512                     loongson2f)
4513                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4514                     ;;
4515                 esac
4516             ;;
4517             *)
4518                 # Unknown CPU. Disable everything.
4519                 warn "unknown CPU. Disabling all MIPS optimizations."
4520                 disable mipsfpu
4521                 disable mipsdsp
4522                 disable mipsdspr2
4523                 disable msa
4524                 disable mmi
4525             ;;
4526         esac
4527
4528         case $cpu in
4529             24kc)
4530                 disable mipsfpu
4531                 disable mipsdsp
4532                 disable mipsdspr2
4533             ;;
4534             24kf*)
4535                 disable mipsdsp
4536                 disable mipsdspr2
4537             ;;
4538             24kec|34kc|1004kc)
4539                 disable mipsfpu
4540                 disable mipsdspr2
4541             ;;
4542             24kef*|34kf*|1004kf*)
4543                 disable mipsdspr2
4544             ;;
4545             74kc)
4546                 disable mipsfpu
4547             ;;
4548             p5600)
4549                 enable mips32r5
4550                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4551             ;;
4552             i6400)
4553                 enable mips64r6
4554                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4555             ;;
4556             p6600)
4557                 enable mips64r6
4558                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4559             ;;
4560         esac
4561     else
4562         # We do not disable anything. Is up to the user to disable the unwanted features.
4563         warn 'generic cpu selected'
4564     fi
4565
4566 elif enabled ppc; then
4567
4568     disable ldbrx
4569
4570     case $(tolower $cpu) in
4571         601|ppc601|powerpc601)
4572             cpuflags="-mcpu=601"
4573             disable altivec
4574         ;;
4575         603*|ppc603*|powerpc603*)
4576             cpuflags="-mcpu=603"
4577             disable altivec
4578         ;;
4579         604*|ppc604*|powerpc604*)
4580             cpuflags="-mcpu=604"
4581             disable altivec
4582         ;;
4583         g3|75*|ppc75*|powerpc75*)
4584             cpuflags="-mcpu=750"
4585             disable altivec
4586         ;;
4587         g4|745*|ppc745*|powerpc745*)
4588             cpuflags="-mcpu=7450"
4589             disable vsx
4590         ;;
4591         74*|ppc74*|powerpc74*)
4592             cpuflags="-mcpu=7400"
4593             disable vsx
4594         ;;
4595         g5|970|ppc970|powerpc970)
4596             cpuflags="-mcpu=970"
4597             disable vsx
4598         ;;
4599         power[3-6]*)
4600             cpuflags="-mcpu=$cpu"
4601             disable vsx
4602         ;;
4603         power[7-8]*)
4604             cpuflags="-mcpu=$cpu"
4605         ;;
4606         cell)
4607             cpuflags="-mcpu=cell"
4608             enable ldbrx
4609             disable vsx
4610         ;;
4611         e500mc)
4612             cpuflags="-mcpu=e500mc"
4613             disable altivec
4614         ;;
4615         e500v2)
4616             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4617             disable altivec
4618             disable dcbzl
4619         ;;
4620         e500)
4621             cpuflags="-mcpu=8540 -mhard-float"
4622             disable altivec
4623             disable dcbzl
4624         ;;
4625     esac
4626
4627 elif enabled sparc; then
4628
4629     case $cpu in
4630         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4631             cpuflags="-mcpu=$cpu"
4632         ;;
4633         ultrasparc*|niagara[234])
4634             cpuflags="-mcpu=$cpu"
4635         ;;
4636     esac
4637
4638 elif enabled x86; then
4639
4640     case $cpu in
4641         i[345]86|pentium)
4642             cpuflags="-march=$cpu"
4643             disable i686
4644             disable mmx
4645         ;;
4646         # targets that do NOT support nopl and conditional mov (cmov)
4647         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4648             cpuflags="-march=$cpu"
4649             disable i686
4650         ;;
4651         # targets that do support nopl and conditional mov (cmov)
4652         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4653         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4654         |amdfam10|barcelona|b[dt]ver*|znver*)
4655             cpuflags="-march=$cpu"
4656             enable i686
4657             enable fast_cmov
4658         ;;
4659         # targets that do support conditional mov but on which it's slow
4660         pentium4|pentium4m|prescott|nocona)
4661             cpuflags="-march=$cpu"
4662             enable i686
4663             disable fast_cmov
4664         ;;
4665     esac
4666
4667 fi
4668
4669 if [ "$cpu" != generic ]; then
4670     add_cflags  $cpuflags
4671     add_asflags $cpuflags
4672     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4673 fi
4674
4675 # compiler sanity check
4676 check_exec <<EOF
4677 int main(void){ return 0; }
4678 EOF
4679 if test "$?" != 0; then
4680     echo "$cc is unable to create an executable file."
4681     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4682         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4683         echo "Only do this if you know what cross compiling means."
4684     fi
4685     die "C compiler test failed."
4686 fi
4687
4688 add_cppflags -D_ISOC99_SOURCE
4689 add_cxxflags -D__STDC_CONSTANT_MACROS
4690 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4691
4692 # some compilers silently accept -std=c11, so we also need to check that the
4693 # version macro is defined properly
4694 if test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L"; then
4695     add_cflags -std=c11
4696 else
4697     check_cflags -std=c99
4698 fi
4699
4700 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4701 #include <stdlib.h>
4702 EOF
4703 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4704 #include <stdlib.h>
4705 EOF
4706
4707 add_host_cppflags -D_ISOC99_SOURCE
4708 check_host_cflags -std=c99
4709 check_host_cflags -Wall
4710 check_host_cflags -O3
4711
4712 check_64bit(){
4713     arch32=$1
4714     arch64=$2
4715     expr=$3
4716     check_code cc "" "int test[2*($expr) - 1]" &&
4717         subarch=$arch64 || subarch=$arch32
4718 }
4719
4720 case "$arch" in
4721     aarch64|alpha|ia64)
4722         spic=$shared
4723     ;;
4724     mips)
4725         check_64bit mips mips64 '_MIPS_SIM > 1'
4726         spic=$shared
4727     ;;
4728     parisc)
4729         check_64bit parisc parisc64 'sizeof(void *) > 4'
4730         spic=$shared
4731     ;;
4732     ppc)
4733         check_64bit ppc ppc64 'sizeof(void *) > 4'
4734         spic=$shared
4735     ;;
4736     s390)
4737         check_64bit s390 s390x 'sizeof(void *) > 4'
4738         spic=$shared
4739     ;;
4740     sparc)
4741         check_64bit sparc sparc64 'sizeof(void *) > 4'
4742         spic=$shared
4743     ;;
4744     x86)
4745         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4746         # Treat x32 as x64 for now. Note it also needs spic=$shared
4747         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4748             subarch=x86_64
4749         if test "$subarch" = "x86_64"; then
4750             spic=$shared
4751         fi
4752     ;;
4753     ppc)
4754         check_cc <<EOF && subarch="ppc64"
4755         int test[(int)sizeof(char*) - 7];
4756 EOF
4757     ;;
4758 esac
4759
4760 enable $subarch
4761 enabled spic && enable_weak pic
4762
4763 # OS specific
4764 case $target_os in
4765     aix)
4766         SHFLAGS=-shared
4767         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4768         enabled shared && add_ldflags -Wl,-brtl
4769         ;;
4770     android)
4771         disable symver
4772         enable section_data_rel_ro
4773         SLIB_INSTALL_NAME='$(SLIBNAME)'
4774         SLIB_INSTALL_LINKS=
4775         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4776         ;;
4777     haiku)
4778         prefix_default="/boot/common"
4779         network_extralibs="-lnetwork"
4780         host_libs=
4781         ;;
4782     sunos)
4783         SHFLAGS='-shared -Wl,-h,$$(@F)'
4784         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4785         network_extralibs="-lsocket -lnsl"
4786         add_cppflags -D__EXTENSIONS__
4787         # When using suncc to build, the Solaris linker will mark
4788         # an executable with each instruction set encountered by
4789         # the Solaris assembler.  As our libraries contain their own
4790         # guards for processor-specific code, instead suppress
4791         # generation of the HWCAPS ELF section on Solaris x86 only.
4792         enabled_all suncc x86 &&
4793             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4794             add_ldflags -Wl,-M,mapfile
4795         nm_default='nm -P -g'
4796         version_script='-M'
4797         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
4798         ;;
4799     netbsd)
4800         disable symver
4801         oss_indev_extralibs="-lossaudio"
4802         oss_outdev_extralibs="-lossaudio"
4803         enabled gcc || check_ldflags -Wl,-zmuldefs
4804         ;;
4805     openbsd|bitrig)
4806         disable symver
4807         SHFLAGS='-shared'
4808         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4809         SLIB_INSTALL_LINKS=
4810         oss_indev_extralibs="-lossaudio"
4811         oss_outdev_extralibs="-lossaudio"
4812         ;;
4813     dragonfly)
4814         disable symver
4815         ;;
4816     freebsd)
4817         ;;
4818     bsd/os)
4819         add_extralibs -lpoll -lgnugetopt
4820         strip="strip -d"
4821         ;;
4822     darwin)
4823         enabled ppc && add_asflags -force_cpusubtype_ALL
4824         install_name_dir_default='$(SHLIBDIR)'
4825         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4826         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4827         strip="${strip} -x"
4828         add_ldflags -Wl,-dynamic,-search_paths_first
4829         SLIBSUF=".dylib"
4830         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4831         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4832         objformat="macho"
4833         enabled x86_64 && objformat="macho64"
4834         enabled_any pic shared x86_64 ||
4835             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4836         check_header dispatch/dispatch.h &&
4837             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
4838         version_script='-exported_symbols_list'
4839         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
4840         ;;
4841     msys*)
4842         die "Native MSYS builds are discouraged, please use the MINGW environment."
4843         ;;
4844     mingw32*|mingw64*)
4845         if test $target_os = "mingw32ce"; then
4846             disable network
4847         else
4848             target_os=mingw32
4849         fi
4850         decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
4851         decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
4852         LIBTARGET=i386
4853         if enabled x86_64; then
4854             LIBTARGET="i386:x86-64"
4855         elif enabled arm; then
4856             LIBTARGET=arm-wince
4857         fi
4858         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4859         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4860         shlibdir_default="$bindir_default"
4861         SLIBPREF=""
4862         SLIBSUF=".dll"
4863         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4864         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4865         dlltool="${cross_prefix}dlltool"
4866         if check_cmd lib.exe -list; then
4867             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4868             if enabled x86_64; then
4869                 LIBTARGET=x64
4870             fi
4871         elif check_cmd $dlltool --version; then
4872             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4873         fi
4874         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4875         SLIB_INSTALL_LINKS=
4876         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4877         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4878         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--disable-auto-image-base'
4879         objformat="win32"
4880         ranlib=:
4881         enable dos_paths
4882         check_ldflags -Wl,--nxcompat,--dynamicbase
4883         # Lets work around some stupidity in binutils.
4884         # ld will strip relocations from executables even though we need them
4885         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4886         # however ld then forgets what the entry point should be (oops) so we
4887         # have to manually (re)set it.
4888         if enabled x86_32; then
4889             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
4890         elif enabled x86_64; then
4891             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
4892             check_ldflags -Wl,--high-entropy-va # binutils 2.25
4893             # Set image base >4GB for extra entropy with HEASLR
4894             add_ldexeflags -Wl,--image-base,0x140000000
4895             append SHFLAGS -Wl,--image-base,0x180000000
4896         fi
4897         ;;
4898     win32|win64)
4899         disable symver
4900         if enabled shared; then
4901             # Link to the import library instead of the normal static library
4902             # for shared libs.
4903             LD_LIB='%.lib'
4904             # Cannot build both shared and static libs with MSVC or icl.
4905             disable static
4906         fi
4907         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4908         shlibdir_default="$bindir_default"
4909         SLIBPREF=""
4910         SLIBSUF=".dll"
4911         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4912         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4913         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4914         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4915         SLIB_INSTALL_LINKS=
4916         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4917         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4918         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4919         objformat="win32"
4920         ranlib=:
4921         enable dos_paths
4922         ;;
4923     cygwin*)
4924         target_os=cygwin
4925         shlibdir_default="$bindir_default"
4926         SLIBPREF="cyg"
4927         SLIBSUF=".dll"
4928         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4929         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4930         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4931         SLIB_INSTALL_LINKS=
4932         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4933         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4934         objformat="win32"
4935         enable dos_paths
4936         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4937         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4938         ;;
4939     *-dos|freedos|opendos)
4940         network_extralibs="-lsocket"
4941         objformat="coff"
4942         enable dos_paths
4943         add_cppflags -U__STRICT_ANSI__
4944         ;;
4945     linux)
4946         enable dv1394
4947         enable section_data_rel_ro
4948         ;;
4949     irix*)
4950         target_os=irix
4951         ranlib="echo ignoring ranlib"
4952         ;;
4953     os/2*)
4954         strip="lxlite -CS"
4955         objformat="aout"
4956         add_cppflags -D_GNU_SOURCE
4957         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4958         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4959         LIBSUF="_s.a"
4960         SLIBPREF=""
4961         SLIBSUF=".dll"
4962         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4963         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4964         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
4965             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
4966             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
4967             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
4968             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
4969         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
4970             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
4971         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4972         SLIB_INSTALL_LINKS=
4973         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
4974         enable dos_paths
4975         enable_weak os2threads
4976         ;;
4977     gnu/kfreebsd)
4978         add_cppflags -D_BSD_SOURCE
4979         ;;
4980     gnu)
4981         ;;
4982     qnx)
4983         add_cppflags -D_QNX_SOURCE
4984         network_extralibs="-lsocket"
4985         ;;
4986     symbian)
4987         SLIBSUF=".dll"
4988         enable dos_paths
4989         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4990         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4991         add_ldflags -Wl,--target1-abs,--no-undefined \
4992                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4993                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4994         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4995                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4996                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4997         ;;
4998     osf1)
4999         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
5000         ;;
5001     minix)
5002         ;;
5003     none)
5004         ;;
5005     *)
5006         die "Unknown OS '$target_os'."
5007         ;;
5008 esac
5009
5010 # test if creating links works
5011 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5012 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5013 mkdir "$link_dest"
5014 $ln_s "$link_dest" "$link_name"
5015 touch "$link_dest/test_file"
5016 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5017     # create link to source path
5018     [ -e src ] && rm src
5019     $ln_s "$source_path" src
5020     source_link=src
5021 else
5022     # creating directory links doesn't work
5023     # fall back to using the full source path
5024     source_link="$source_path"
5025 fi
5026 # cleanup
5027 rm -r "$link_dest"
5028 rm -r "$link_name"
5029
5030 # determine libc flavour
5031
5032 probe_libc(){
5033     pfx=$1
5034     pfx_no_=${pfx%_}
5035     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5036     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5037         eval ${pfx}libc_type=uclibc
5038         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5039     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5040         eval ${pfx}libc_type=glibc
5041         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5042     # MinGW headers can be installed on Cygwin, so check for newlib first.
5043     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5044         eval ${pfx}libc_type=newlib
5045         add_${pfx}cppflags -U__STRICT_ANSI__
5046     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5047     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5048         eval ${pfx}libc_type=mingw64
5049         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5050             add_compat msvcrt/snprintf.o
5051             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5052         fi
5053         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5054         eval test \$${pfx_no_}cc_type = "gcc" &&
5055             add_${pfx}cppflags -D__printf__=__gnu_printf__
5056     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5057          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5058         eval ${pfx}libc_type=mingw32
5059         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5060             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5061             die "ERROR: MinGW32 runtime version must be >= 3.15."
5062         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5063         check_${pfx}cpp_condition _mingw.h "defined(_WIN32_WINNT) && _WIN32_WINNT >= 0x0502" ||
5064             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
5065         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700__" &&
5066             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5067         eval test \$${pfx_no_}cc_type = "gcc" &&
5068             add_${pfx}cppflags -D__printf__=__gnu_printf__
5069     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5070         eval ${pfx}libc_type=msvcrt
5071         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5072             if [ "$pfx" = host_ ]; then
5073                 add_host_cppflags -Dsnprintf=_snprintf
5074             else
5075                 add_compat strtod.o strtod=avpriv_strtod
5076                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5077                                              _snprintf=avpriv_snprintf  \
5078                                              vsnprintf=avpriv_vsnprintf
5079             fi
5080         fi
5081         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5082         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5083         # 0x601 by default unless something else is set by the user.
5084         # This can easily lead to us detecting functions only present
5085         # in such new versions and producing binaries requiring windows 7.0.
5086         # Therefore explicitly set the default to XP unless the user has
5087         # set something else on the command line.
5088         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5089         # family. For these cases, configure is free to use any functions
5090         # found in the SDK headers by default. (Alternatively, we could force
5091         # _WIN32_WINNT to 0x0602 in that case.)
5092         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5093             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
5094 #ifdef WINAPI_FAMILY
5095 #include <winapifamily.h>
5096 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5097 #error not desktop
5098 #endif
5099 #endif
5100 EOF
5101         if [ "$pfx" = "" ]; then
5102             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5103             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5104         fi
5105     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5106         eval ${pfx}libc_type=klibc
5107     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5108         eval ${pfx}libc_type=bionic
5109     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5110         eval ${pfx}libc_type=solaris
5111         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5112     fi
5113     check_${pfx}cc <<EOF
5114 #include <time.h>
5115 void *v = localtime_r;
5116 EOF
5117 test "$?" != 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
5118 #include <time.h>
5119 void *v = localtime_r;
5120 EOF
5121
5122 }
5123
5124 probe_libc
5125 test -n "$libc_type" && enable libc_$libc_type
5126 probe_libc host_
5127 test -n "$host_libc_type" && enable host_libc_$host_libc_type
5128
5129 case $libc_type in
5130     bionic)
5131         add_compat strtod.o strtod=avpriv_strtod
5132         ;;
5133 esac
5134
5135 # hacks for compiler/libc/os combinations
5136
5137 if enabled_all tms470 libc_glibc; then
5138     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
5139     add_cppflags -D__USER_LABEL_PREFIX__=
5140     add_cppflags -D__builtin_memset=memset
5141     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
5142     add_cflags   -pds=48    # incompatible redefinition of macro
5143 fi
5144
5145 if enabled_all ccc libc_glibc; then
5146     add_ldflags -Wl,-z,now  # calls to libots crash without this
5147 fi
5148
5149 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5150     add_cppflags '-I\$(SRC_PATH)/compat/float'
5151
5152 esc(){
5153     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
5154 }
5155
5156 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
5157
5158 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5159
5160 set_default libdir
5161 : ${shlibdir_default:="$libdir"}
5162 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5163
5164 set_default $PATHS_LIST
5165 set_default nm
5166
5167 # we need to build at least one lib type
5168 if ! enabled_any static shared; then
5169     cat <<EOF
5170 At least one library type must be built.
5171 Specify --enable-static to build the static libraries or --enable-shared to
5172 build the shared libraries as well. To only build the shared libraries specify
5173 --disable-static in addition to --enable-shared.
5174 EOF
5175     exit 1
5176 fi
5177
5178 disabled optimizations || check_cflags -fomit-frame-pointer
5179
5180 enable_weak_pic() {
5181     disabled pic && return
5182     enable pic
5183     add_cppflags -DPIC
5184     case "$target_os" in
5185     mingw*|cygwin*)
5186         ;;
5187     *)
5188         add_cflags -fPIC
5189         ;;
5190     esac
5191     add_asflags  -fPIC
5192 }
5193
5194 enabled pic && enable_weak_pic
5195
5196 check_cc <<EOF || die "Symbol mangling check failed."
5197 int ff_extern;
5198 EOF
5199 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5200 extern_prefix=${sym%%ff_extern*}
5201
5202 check_cc <<EOF && enable_weak inline_asm
5203 void foo(void) { __asm__ volatile ("" ::); }
5204 EOF
5205
5206 _restrict=
5207 for restrict_keyword in restrict __restrict__ __restrict; do
5208     check_cc <<EOF && _restrict=$restrict_keyword && break
5209 void foo(char * $restrict_keyword p);
5210 EOF
5211 done
5212
5213 check_cc <<EOF && enable pragma_deprecated
5214 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
5215 EOF
5216
5217 check_cc <<EOF && enable attribute_packed
5218 struct { int x; } __attribute__((packed)) x;
5219 EOF
5220
5221 check_cc <<EOF && enable attribute_may_alias
5222 union { int x; } __attribute__((may_alias)) x;
5223 EOF
5224
5225 check_cc <<EOF || die "endian test failed"
5226 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5227 EOF
5228 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5229
5230 if ! enabled ppc64 || enabled bigendian; then
5231     disable vsx
5232 fi
5233
5234 check_gas() {
5235     log "check_gas using '$as' as AS"
5236     # :vararg is used on aarch64, arm and ppc altivec
5237     check_as <<EOF || return 1
5238 .macro m n, y:vararg=0
5239 \n: .int \y
5240 .endm
5241 m x
5242 EOF
5243     # .altmacro is only used in arm asm
5244     ! enabled arm || check_as <<EOF || return 1
5245 .altmacro
5246 EOF
5247     enable gnu_as
5248     return 0
5249 }
5250
5251 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5252     nogas=:
5253     enabled_any arm aarch64 && nogas=die
5254     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5255     as_noop=-v
5256
5257     case $as_type in
5258         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5259         gcc)  gaspp_as_type=gas ;;
5260         *)    gaspp_as_type=$as_type ;;
5261     esac
5262
5263     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5264
5265     test "${as#*gas-preprocessor.pl}" != "$as" ||
5266     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5267         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5268
5269     if ! check_gas ; then
5270         as=${gas:=$as}
5271         check_gas || \
5272             $nogas "GNU assembler not found, install/update gas-preprocessor"
5273     fi
5274
5275     check_as <<EOF && enable as_func
5276 .func test
5277 .endfunc
5278 EOF
5279 fi
5280
5281 check_inline_asm inline_asm_labels '"1:\n"'
5282
5283 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5284
5285 if enabled aarch64; then
5286     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5287     # internal assembler in clang 3.3 does not support this instruction
5288     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5289     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5290
5291     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5292
5293 elif enabled alpha; then
5294
5295     check_cflags -mieee
5296
5297 elif enabled arm; then
5298
5299     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
5300
5301     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
5302 float func(float a, float b){ return a+b; }
5303 EOF
5304
5305     enabled thumb && check_cflags -mthumb || check_cflags -marm
5306
5307     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
5308         enable vfp_args
5309     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5310         enable vfp_args
5311     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5312         case "${cross_prefix:-$cc}" in
5313             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
5314             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
5315 __asm__ (".eabi_attribute 28, 1");
5316 int main(void) { return 0; }
5317 EOF
5318         esac
5319         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5320     fi
5321
5322     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5323     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5324     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5325     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5326     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5327     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5328     enabled setend  && check_insn setend  'setend be'
5329
5330     [ $target_os = linux ] || [ $target_os = android ] ||
5331         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5332             $ARCH_EXT_LIST_ARM
5333
5334     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5335
5336     check_as <<EOF && enable as_dn_directive
5337 ra .dn d0.i16
5338 .unreq ra
5339 EOF
5340     check_as <<EOF && enable as_fpu_directive
5341 .fpu neon
5342 EOF
5343
5344     # llvm's integrated assembler supports .object_arch from llvm 3.5
5345     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
5346 .object_arch armv4
5347 EOF
5348
5349     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5350
5351 elif enabled mips; then
5352
5353     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5354     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5355     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5356
5357     # Enable minimum ISA based on selected options
5358     if enabled mips64; then
5359         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5360         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5361         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5362     else
5363         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5364         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5365         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5366         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5367     fi
5368
5369     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5370     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5371     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
5372     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5373     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5374
5375 elif enabled parisc; then
5376
5377     if enabled gcc; then
5378         case $($cc -dumpversion) in
5379             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5380         esac
5381     fi
5382
5383 elif enabled ppc; then
5384
5385     enable local_aligned_8 local_aligned_16 local_aligned_32
5386
5387     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5388     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5389     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5390     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5391
5392     # AltiVec flags: The FSF version of GCC differs from the Apple version
5393     if enabled altivec; then
5394         check_cflags -maltivec -mabi=altivec &&
5395         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
5396         check_cflags -faltivec
5397
5398         # check if our compiler supports Motorola AltiVec C API
5399         check_cc <<EOF || disable altivec
5400 $inc_altivec_h
5401 int main(void) {
5402     vector signed int v1 = (vector signed int) { 0 };
5403     vector signed int v2 = (vector signed int) { 1 };
5404     v1 = vec_add(v1, v2);
5405     return 0;
5406 }
5407 EOF
5408
5409         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5410     fi
5411
5412     if enabled vsx; then
5413         check_cflags -mvsx &&
5414         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
5415     fi
5416
5417     if enabled power8; then
5418         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
5419     fi
5420
5421 elif enabled x86; then
5422
5423     check_builtin rdtsc    intrin.h   "__rdtsc()"
5424     check_builtin mm_empty mmintrin.h "_mm_empty()"
5425
5426     enable local_aligned_8 local_aligned_16 local_aligned_32
5427
5428     # check whether EBP is available on x86
5429     # As 'i' is stored on the stack, this program will crash
5430     # if the base pointer is used to access it because the
5431     # base pointer is cleared in the inline assembly code.
5432     check_exec_crash <<EOF && enable ebp_available
5433 volatile int i=0;
5434 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5435 return i;
5436 EOF
5437
5438     # check whether EBX is available on x86
5439     check_inline_asm ebx_available '""::"b"(0)' &&
5440         check_inline_asm ebx_available '"":::"%ebx"'
5441
5442     # check whether xmm clobbers are supported
5443     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5444
5445     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5446         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5447
5448     # check whether binutils is new enough to compile SSSE3/MMXEXT
5449     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5450     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5451
5452     if ! disabled_any asm mmx yasm; then
5453         if check_cmd $yasmexe --version; then
5454             enabled x86_64 && yasm_extra="-m amd64"
5455             yasm_debug="-g dwarf2"
5456         elif check_cmd nasm -v; then
5457             yasmexe=nasm
5458             yasm_debug="-g -F dwarf"
5459             if enabled x86_64; then
5460                 case "$objformat" in
5461                     elf)   objformat=elf64 ;;
5462                     win32) objformat=win64 ;;
5463                 esac
5464             fi
5465         fi
5466
5467         YASMFLAGS="-f $objformat $yasm_extra"
5468         enabled pic               && append YASMFLAGS "-DPIC"
5469         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
5470         case "$objformat" in
5471             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
5472         esac
5473
5474         check_yasm "movbe ecx, [5]" && enable yasm ||
5475             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
5476         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
5477         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
5478         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
5479         check_yasm "CPU amdnop" || disable cpunop
5480     fi
5481
5482     case "$cpu" in
5483         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5484             disable fast_clz
5485         ;;
5486     esac
5487
5488 fi
5489
5490 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
5491
5492 check_ldflags -Wl,--as-needed
5493 check_ldflags -Wl,-z,noexecstack
5494
5495 if check_func dlopen && check_func dlsym; then
5496     ldl=
5497 elif check_func dlopen -ldl && check_func dlsym -ldl; then
5498     ldl=-ldl
5499 fi
5500
5501 avisynth_demuxer_extralibs='$ldl'
5502 cuda_extralibs='$ldl'
5503 decklink_outdev_extralibs="$decklink_outdev_extralibs $ldl"
5504 decklink_indev_extralibs="$decklink_indev_extralibs $ldl"
5505 frei0r_filter_extralibs='$ldl'
5506 frei0r_src_filter_extralibs='$ldl'
5507 ladspa_filter_extralibs='$ldl'
5508 nvenc_extralibs='$ldl'
5509 coreimage_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5510 coreimagesrc_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5511
5512 if ! disabled network; then
5513     check_func getaddrinfo $network_extralibs
5514     check_func inet_aton $network_extralibs
5515
5516     check_type netdb.h "struct addrinfo"
5517     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5518     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5519     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5520     check_type poll.h "struct pollfd"
5521     check_type netinet/sctp.h "struct sctp_event_subscribe"
5522     check_struct "sys/socket.h" "struct msghdr" msg_flags
5523     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5524     check_type netinet/in.h "struct sockaddr_in6"
5525     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5526     check_type "sys/types.h sys/socket.h" socklen_t
5527
5528     # Prefer arpa/inet.h over winsock2
5529     if check_header arpa/inet.h ; then
5530         check_func closesocket
5531     elif check_header winsock2.h ; then
5532         check_func_headers winsock2.h closesocket -lws2 &&
5533             network_extralibs="-lws2" ||
5534         { check_func_headers winsock2.h closesocket -lws2_32 &&
5535             network_extralibs="-lws2_32"; } || disable winsock2_h network
5536         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5537
5538         check_type ws2tcpip.h socklen_t
5539         check_type ws2tcpip.h "struct addrinfo"
5540         check_type ws2tcpip.h "struct group_source_req"
5541         check_type ws2tcpip.h "struct ip_mreq_source"
5542         check_type ws2tcpip.h "struct ipv6_mreq"
5543         check_type winsock2.h "struct pollfd"
5544         check_struct winsock2.h "struct sockaddr" sa_len
5545         check_type ws2tcpip.h "struct sockaddr_in6"
5546         check_type ws2tcpip.h "struct sockaddr_storage"
5547     else
5548         disable network
5549     fi
5550 fi
5551
5552 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5553 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5554 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5555 check_builtin sarestart signal.h "SA_RESTART"
5556 check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" -lpthread
5557 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5558 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5559 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5560 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5561
5562 case "$custom_allocator" in
5563     jemalloc)
5564         # jemalloc by default does not use a prefix
5565         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5566     ;;
5567     tcmalloc)
5568         require_pkg_config libtcmalloc gperftools/tcmalloc.h tc_malloc
5569         malloc_prefix=tc_
5570     ;;
5571 esac
5572
5573 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5574 check_func  ${malloc_prefix}memalign            && enable memalign
5575 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5576
5577 check_func  access
5578 check_func_headers stdlib.h arc4random
5579 check_func_headers time.h clock_gettime ||
5580     { check_lib time.h clock_gettime -lrt && LIBRT="-lrt"; }
5581 check_func  fcntl
5582 check_func  fork
5583 check_func  gethrtime
5584 check_func  getopt
5585 check_func  getrusage
5586 check_func  gettimeofday
5587 check_func  isatty
5588 check_func  mach_absolute_time
5589 check_func  mkstemp
5590 check_func  mmap
5591 check_func  mprotect
5592 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5593 check_func_headers time.h nanosleep ||
5594     { check_lib time.h nanosleep -lrt && LIBRT="-lrt"; }
5595 check_func  sched_getaffinity
5596 check_func  setrlimit
5597 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5598 check_func  strerror_r
5599 check_func  sysconf
5600 check_func  sysctl
5601 check_func  usleep
5602
5603 check_func_headers conio.h kbhit
5604 check_func_headers io.h setmode
5605 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5606 check_func_headers stdlib.h getenv
5607 check_func_headers sys/stat.h lstat
5608
5609 check_func_headers windows.h CoTaskMemFree -lole32
5610 check_func_headers windows.h GetProcessAffinityMask
5611 check_func_headers windows.h GetProcessTimes
5612 check_func_headers windows.h GetSystemTimeAsFileTime
5613 check_func_headers windows.h LoadLibrary
5614 check_func_headers windows.h MapViewOfFile
5615 check_func_headers windows.h PeekNamedPipe
5616 check_func_headers windows.h SetConsoleTextAttribute
5617 check_func_headers windows.h SetConsoleCtrlHandler
5618 check_func_headers windows.h Sleep
5619 check_func_headers windows.h VirtualAlloc
5620 check_struct windows.h "CONDITION_VARIABLE" Ptr
5621 check_func_headers glob.h glob
5622 enabled xlib &&
5623     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5624
5625 check_header AudioToolbox/AudioToolbox.h
5626 check_header direct.h
5627 check_header dirent.h
5628 check_header dlfcn.h
5629 check_header d3d11.h
5630 check_header dxva.h
5631 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5632 check_header io.h
5633 check_header libcrystalhd/libcrystalhd_if.h
5634 check_header mach/mach_time.h
5635 check_header malloc.h
5636 check_header net/udplite.h
5637 check_header poll.h
5638 check_header sys/mman.h
5639 check_header sys/param.h
5640 check_header sys/resource.h
5641 check_header sys/select.h
5642 check_header sys/time.h
5643 check_header sys/un.h
5644 check_header termios.h
5645 check_header unistd.h
5646 check_header valgrind/valgrind.h
5647 check_header vdpau/vdpau.h
5648 check_header vdpau/vdpau_x11.h
5649 check_header VideoDecodeAcceleration/VDADecoder.h
5650 check_header VideoToolbox/VideoToolbox.h
5651 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5652 enabled videotoolbox && check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferColorPrimaries_ITU_R_2020 -framework CoreVideo
5653 check_header windows.h
5654 check_header X11/extensions/XvMClib.h
5655 check_header asm/types.h
5656
5657 # it seems there are versions of clang in some distros that try to use the
5658 # gcc headers, which explodes for stdatomic
5659 # so we also check that atomics actually work here
5660 check_builtin stdatomic_h stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0)"
5661
5662 check_lib "windows.h shellapi.h" CommandLineToArgvW   -lshell32
5663 check_lib "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
5664 check_lib "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
5665
5666 check_lib "CoreServices/CoreServices.h" UTGetOSTypeFromString "-framework CoreServices"
5667
5668 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5669
5670 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5671 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5672 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5673 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5674 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5675
5676 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
5677 check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
5678 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
5679 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
5680 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5681 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5682 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
5683 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
5684
5685 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5686
5687 check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt
5688
5689 if ! disabled w32threads && ! enabled pthreads; then
5690     check_func_headers "windows.h process.h" _beginthreadex &&
5691         enable w32threads || disable w32threads
5692     if ! enabled w32threads && enabled winrt; then
5693         check_func_headers "windows.h" CreateThread &&
5694             enable w32threads || disable w32threads
5695     fi
5696 fi
5697
5698 # check for some common methods of building with pthread support
5699 # do this before the optional library checks as some of them require pthreads
5700 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5701     enable pthreads
5702     if check_func pthread_join -pthread && check_func pthread_create -pthread; then
5703         add_cflags -pthread
5704         add_extralibs -pthread
5705     elif check_func pthread_join -pthreads && check_func pthread_create -pthreads; then
5706         add_cflags -pthreads
5707         add_extralibs -pthreads
5708     elif check_func pthread_join -ldl -pthread && check_func pthread_create -ldl -pthread; then
5709         add_cflags -ldl -pthread
5710         add_extralibs -ldl -pthread
5711     elif check_func pthread_join -lpthreadGC2 && check_func pthread_create -lpthreadGC2; then
5712         add_extralibs -lpthreadGC2
5713     elif check_lib pthread.h pthread_join -lpthread && check_lib pthread.h pthread_create -lpthread; then
5714         :
5715     elif ! check_func pthread_join && ! check_func pthread_create; then
5716         disable pthreads
5717     fi
5718     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5719 fi
5720
5721
5722 if enabled pthreads; then
5723   check_func pthread_cancel
5724 fi
5725
5726 enabled pthreads &&
5727     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)"
5728
5729 disabled  zlib || check_lib  zlib.h      zlibVersion    -lz    || disable  zlib
5730 disabled bzlib || check_lib bzlib.h BZ2_bzlibVersion    -lbz2  || disable bzlib
5731 disabled  lzma || check_lib  lzma.h lzma_version_number -llzma || disable lzma
5732
5733 check_lib math.h sin -lm && LIBM="-lm"
5734 disabled crystalhd || check_lib "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd || disable crystalhd
5735
5736 atan2f_args=2
5737 copysign_args=2
5738 hypot_args=2
5739 ldexpf_args=2
5740 powf_args=2
5741
5742 for func in $MATH_FUNCS; do
5743     eval check_mathfunc $func \${${func}_args:-1} $LIBM
5744 done
5745
5746 for func in $COMPLEX_FUNCS; do
5747     eval check_complexfunc $func \${${func}_args:-1}
5748 done
5749
5750 # these are off by default, so fail if requested and not available
5751 enabled avfoundation_indev && { check_header_objcc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
5752 enabled avfoundation_indev && { check_lib CoreGraphics/CoreGraphics.h CGGetActiveDisplayList -framework CoreGraphics ||
5753                                 check_lib ApplicationServices/ApplicationServices.h CGGetActiveDisplayList -framework ApplicationServices; }
5754 enabled cuda              && check_header cuda.h # this is not a dependency
5755 enabled cuvid             && { enabled cuda ||
5756                                die "ERROR: CUVID requires CUDA"; }
5757 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5758 enabled coreimage_filter  && { check_header_objcc QuartzCore/CoreImage.h || disable coreimage_filter; }
5759 enabled coreimagesrc_filter && { check_header_objcc QuartzCore/CoreImage.h || disable coreimagesrc_filter; }
5760 enabled decklink          && { { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; } &&
5761                                { check_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a060100" || die "ERROR: Decklink API version must be >= 10.6.1."; } }
5762 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
5763 enabled gmp               && require gmp gmp.h mpz_export -lgmp
5764 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
5765 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads &&
5766                                check_lib "dlfcn.h" dlopen -ldl || die "ERROR: jni not found"; }
5767 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
5768 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5769 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
5770 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
5771 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
5772 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5773                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
5774                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5775 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
5776 enabled libdc1394         && require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new
5777 enabled libfdk_aac        && { use_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5778                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5779                                  warn "using libfdk without pkg-config"; } }
5780 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"
5781 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_libs
5782 enabled fontconfig        && enable libfontconfig
5783 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
5784 enabled libfreetype       && require_libfreetype
5785 enabled libfribidi        && require_pkg_config fribidi fribidi.h fribidi_version_info
5786 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
5787 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5788                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
5789                                done || die "ERROR: libgsm not found"; }
5790 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
5791 enabled libkvazaar        && require_pkg_config "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
5792 enabled libmfx            && require_pkg_config libmfx "mfx/mfxvideo.h" MFXInit
5793 enabled libmodplug        && require_pkg_config libmodplug libmodplug/modplug.h ModPlug_Load
5794 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5795 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
5796 enabled libnpp            && require libnpp npp.h nppGetLibVersion -lnppi -lnppc
5797 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5798 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5799 enabled libopencv         && { check_header opencv2/core/core_c.h &&
5800                                { use_pkg_config opencv opencv2/core/core_c.h cvCreateImageHeader ||
5801                                  require opencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
5802                                require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader; }
5803 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
5804 enabled libopenjpeg       && { { check_lib openjpeg-2.1/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5805                                check_lib openjpeg-2.1/openjpeg.h opj_version -lopenjp2 ||
5806                                { check_lib openjpeg-2.0/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5807                                { check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5808                                { check_lib openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5809                                die "ERROR: libopenjpeg not found"; }
5810 enabled libopenmpt        && require_pkg_config "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create
5811 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
5812 enabled libpulse          && require_pkg_config libpulse pulse/pulseaudio.h pa_context_new
5813 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
5814 enabled librubberband     && require_pkg_config "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new
5815 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
5816 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
5817 enabled libsmbclient      && { use_pkg_config smbclient libsmbclient.h smbc_init ||
5818                                require smbclient libsmbclient.h smbc_init -lsmbclient; }
5819 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy
5820 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr && LIBSOXR="-lsoxr"
5821 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
5822 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
5823 enabled libtesseract      && require_pkg_config tesseract tesseract/capi.h TessBaseAPICreate
5824 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
5825 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
5826                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
5827                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
5828 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
5829 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
5830 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
5831 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
5832
5833 enabled libvpx            && {
5834     enabled libvpx_vp8_decoder && {
5835         use_pkg_config "vpx >= 0.9.1" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
5836             check_lib "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
5837                 die "ERROR: libvpx decoder version must be >=0.9.1";
5838     }
5839     enabled libvpx_vp8_encoder && {
5840         use_pkg_config "vpx >= 0.9.7" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
5841             check_lib "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
5842                 die "ERROR: libvpx encoder version must be >=0.9.7";
5843     }
5844     enabled libvpx_vp9_decoder && {
5845         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
5846             check_lib "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx ||
5847                 disable libvpx_vp9_decoder;
5848     }
5849     enabled libvpx_vp9_encoder && {
5850         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
5851             check_lib "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx ||
5852                 disable libvpx_vp9_encoder;
5853     }
5854     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
5855         die "libvpx enabled but no supported decoders found"
5856     fi
5857 }
5858
5859 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
5860 enabled libwebp           && {
5861     enabled libwebp_encoder      && require_pkg_config "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
5862     enabled libwebp_anim_encoder && { use_pkg_config "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit || disable libwebp_anim_encoder; } }
5863 enabled libx264           && { use_pkg_config x264 "stdint.h x264.h" x264_encoder_encode ||
5864                                { require libx264 "stdint.h x264.h" x264_encoder_encode -lx264 &&
5865                                  warn "using libx264 without pkg-config"; } } &&
5866                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
5867                                die "ERROR: libx264 must be installed and version must be >= 0.118."; } &&
5868                              { check_cpp_condition x264.h "X264_MPEG2" &&
5869                                enable libx262; }
5870 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
5871                              { check_cpp_condition x265.h "X265_BUILD >= 68" ||
5872                                die "ERROR: libx265 version must be >= 68."; }
5873 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode -lxavs
5874 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
5875 enabled libzimg           && require_pkg_config "zimg >= 2.3.0" zimg.h zimg_get_api_version
5876 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
5877 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi &&
5878                              { check_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
5879                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
5880 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
5881 enabled mmal              && { check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
5882                                { ! enabled cross_compile &&
5883                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
5884                                  add_ldflags -L/opt/vc/lib/ &&
5885                                  check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
5886                                die "ERROR: mmal not found" &&
5887                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
5888 enabled netcdf            && require_pkg_config netcdf netcdf.h nc_inq_libvers
5889 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
5890                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
5891                                die "ERROR: openal not found"; } &&
5892                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
5893                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
5894 enabled opencl            && { check_lib OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
5895                                check_lib CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
5896                                die "ERROR: opencl not found"; } &&
5897                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
5898                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
5899                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
5900 enabled opengl            && { check_lib GL/glx.h glXGetProcAddress "-lGL" ||
5901                                check_lib windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
5902                                check_lib OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
5903                                check_lib ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
5904                                die "ERROR: opengl not found."
5905                              }
5906 enabled omx_rpi           && { check_header OMX_Core.h ||
5907                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_header OMX_Core.h ; } ||
5908                                die "ERROR: OpenMAX IL headers not found"; }
5909 enabled omx               && { check_header OMX_Core.h || die "ERROR: OpenMAX IL headers not found"; }
5910 enabled openssl           && { use_pkg_config openssl openssl/ssl.h OPENSSL_init_ssl ||
5911                                use_pkg_config openssl openssl/ssl.h SSL_library_init ||
5912                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
5913                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
5914                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
5915                                die "ERROR: openssl not found"; }
5916 enabled qtkit_indev      && { check_header_objcc QTKit/QTKit.h || disable qtkit_indev; }
5917
5918 if enabled gcrypt; then
5919     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
5920     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
5921         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
5922         gcrypt_libs=$("${GCRYPT_CONFIG}" --libs)
5923         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_libs ||
5924             die "ERROR: gcrypt not found"
5925         add_cflags $gcrypt_cflags && add_extralibs $gcrypt_libs
5926     else
5927         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
5928     fi
5929 fi
5930
5931 disabled sdl && disable sdl2
5932 if ! disabled sdl2; then
5933     SDL2_CONFIG="${cross_prefix}sdl2-config"
5934     if check_pkg_config sdl2 SDL_events.h SDL_PollEvent; then
5935         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
5936         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
5937         check_func SDL_Init $sdl2_libs $sdl2_cflags && enable sdl2
5938     else
5939       if "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
5940         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
5941         sdl2_libs=$("${SDL2_CONFIG}" --libs)
5942         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
5943         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
5944         check_func SDL_Init $sdl2_libs $sdl2_cflags && enable sdl2
5945       fi
5946     fi
5947     if test $target_os = "mingw32"; then
5948         sdl2_libs="$sdl2_libs -mconsole"
5949     fi
5950 fi
5951 enabled sdl2 && enable sdl && add_cflags $sdl2_cflags && add_extralibs $sdl2_libs
5952
5953 disabled securetransport || { check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5954     check_lib "Security/SecureTransport.h Security/Security.h" "SSLCreateContext SecItemImport" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
5955     enable securetransport; }
5956
5957 disabled schannel || { check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
5958                        check_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" && enable schannel && add_extralibs -lsecur32; }
5959
5960 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
5961 enabled makeinfo \
5962     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
5963     && enable makeinfo_html || disable makeinfo_html
5964 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
5965 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
5966 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
5967 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
5968
5969 check_header linux/fb.h
5970 check_header linux/videodev.h
5971 check_header linux/videodev2.h
5972 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5973
5974 check_header sys/videoio.h
5975 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
5976
5977 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
5978 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
5979 # w32api 3.12 had it defined wrong
5980 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
5981
5982 check_type "dshow.h" IBaseFilter
5983
5984 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
5985 { check_header dev/bktr/ioctl_meteor.h &&
5986   check_header dev/bktr/ioctl_bt848.h; } ||
5987 { check_header machine/ioctl_meteor.h &&
5988   check_header machine/ioctl_bt848.h; } ||
5989 { check_header dev/video/meteor/ioctl_meteor.h &&
5990   check_header dev/video/bktr/ioctl_bt848.h; } ||
5991 check_header dev/ic/bt8xx.h
5992
5993 check_header sndio.h
5994 if check_struct sys/soundcard.h audio_buf_info bytes; then
5995     enable_safe sys/soundcard.h
5996 else
5997     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
5998     #include <sys/soundcard.h>
5999     audio_buf_info abc;
6000 EOF
6001 fi
6002 check_header soundcard.h
6003
6004 enabled_any alsa_indev alsa_outdev &&
6005     check_lib alsa/asoundlib.h snd_pcm_htimestamp -lasound
6006
6007 enabled jack_indev && check_lib jack/jack.h jack_client_open -ljack &&
6008     check_func jack_port_get_latency_range -ljack
6009
6010 enabled_any sndio_indev sndio_outdev && check_lib sndio.h sio_open -lsndio
6011
6012 if enabled libcdio; then
6013     check_lib "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6014     check_lib "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6015     die "ERROR: No usable libcdio/cdparanoia found"
6016 fi
6017
6018 if ! disabled libxcb; then
6019     check_pkg_config "xcb >= 1.4" xcb/xcb.h xcb_connect || {
6020         enabled libxcb && die "ERROR: libxcb >= 1.4 not found";
6021     } && enable libxcb
6022
6023 if enabled libxcb; then
6024     disabled libxcb_shm || {
6025         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
6026             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
6027         } && check_header sys/shm.h && enable libxcb_shm; }
6028
6029     disabled libxcb_xfixes || {
6030         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
6031             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
6032         } && enable libxcb_xfixes; }
6033
6034     disabled libxcb_shape || {
6035         check_pkg_config xcb-shape xcb/shape.h xcb_shape_get_rectangles || {
6036             enabled libxcb_shape && die "ERROR: libxcb_shape not found";
6037         } && enable libxcb_shape; }
6038
6039     add_cflags $xcb_cflags $xcb_shm_cflags $xcb_xfixes_cflags $xcb_shape_cflags
6040     add_extralibs $xcb_libs $xcb_shm_libs $xcb_xfixes_libs $xcb_shape_libs
6041 fi
6042 fi
6043
6044 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6045
6046 enabled dxva2api_h &&
6047     check_cc <<EOF && enable dxva2api_cobj
6048 #define _WIN32_WINNT 0x0600
6049 #define COBJMACROS
6050 #include <windows.h>
6051 #include <d3d9.h>
6052 #include <dxva2api.h>
6053 int main(void) { IDirectXVideoDecoder *o = NULL; IDirectXVideoDecoder_Release(o); return 0; }
6054 EOF
6055
6056 enabled vaapi &&
6057     check_lib va/va.h vaInitialize -lva ||
6058     disable vaapi
6059
6060 enabled vaapi &&
6061     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
6062     disable vaapi
6063
6064 enabled vaapi &&
6065     check_lib "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm &&
6066     enable vaapi_drm
6067
6068 enabled vaapi &&
6069     check_lib "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 -lX11 &&
6070     enable vaapi_x11
6071
6072 enabled vdpau &&
6073     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
6074     disable vdpau
6075
6076 enabled vdpau &&
6077     check_lib "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11 &&
6078     enable vdpau_x11
6079
6080 if enabled x86; then
6081     case $target_os in
6082         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6083             ;;
6084         *)
6085             disable cuda cuvid nvenc
6086             ;;
6087     esac
6088 else
6089     disable cuda cuvid nvenc
6090 fi
6091
6092 enabled nvenc &&
6093     check_cc -I$source_path <<EOF || disable nvenc
6094 #include "compat/nvenc/nvEncodeAPI.h"
6095 NV_ENCODE_API_FUNCTION_LIST flist;
6096 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6097 int main(void) { return 0; }
6098 EOF
6099
6100 # Funny iconv installations are not unusual, so check it after all flags have been set
6101 disabled iconv || check_func_headers iconv.h iconv || check_lib iconv.h iconv -liconv || disable iconv
6102
6103 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6104
6105 # add some useful compiler flags if supported
6106 check_cflags -Wdeclaration-after-statement
6107 check_cflags -Wall
6108 check_cflags -Wdisabled-optimization
6109 check_cflags -Wpointer-arith
6110 check_cflags -Wredundant-decls
6111 check_cflags -Wwrite-strings
6112 check_cflags -Wtype-limits
6113 check_cflags -Wundef
6114 check_cflags -Wmissing-prototypes
6115 check_cflags -Wno-pointer-to-int-cast
6116 check_cflags -Wstrict-prototypes
6117 check_cflags -Wempty-body
6118
6119 if enabled extra_warnings; then
6120     check_cflags -Wcast-qual
6121     check_cflags -Wextra
6122     check_cflags -Wpedantic
6123 fi
6124
6125 check_disable_warning(){
6126     warning_flag=-W${1#-Wno-}
6127     test_cflags $warning_flag && add_cflags $1
6128 }
6129
6130 check_disable_warning -Wno-parentheses
6131 check_disable_warning -Wno-switch
6132 check_disable_warning -Wno-format-zero-length
6133 check_disable_warning -Wno-pointer-sign
6134 check_disable_warning -Wno-unused-const-variable
6135
6136 check_disable_warning_headers(){
6137     warning_flag=-W${1#-Wno-}
6138     test_cflags $warning_flag && add_cflags_headers $1
6139 }
6140
6141 check_disable_warning_headers -Wno-deprecated-declarations
6142 check_disable_warning_headers -Wno-unused-variable
6143
6144 # add some linker flags
6145 check_ldflags -Wl,--warn-common
6146 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6147 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
6148 enabled rpath && add_ldlibflags -Wl,-rpath,$libdir
6149 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6150
6151 # add some strip flags
6152 # -wN '..@*' is more selective than -x, but not available everywhere.
6153 check_stripflags -wN \'..@*\' || check_stripflags -x
6154
6155 enabled neon_clobber_test &&
6156     check_ldflags -Wl,--wrap,avcodec_open2              \
6157                   -Wl,--wrap,avcodec_decode_audio4      \
6158                   -Wl,--wrap,avcodec_decode_video2      \
6159                   -Wl,--wrap,avcodec_decode_subtitle2   \
6160                   -Wl,--wrap,avcodec_encode_audio2      \
6161                   -Wl,--wrap,avcodec_encode_video2      \
6162                   -Wl,--wrap,avcodec_encode_subtitle    \
6163                   -Wl,--wrap,avcodec_send_packet        \
6164                   -Wl,--wrap,avcodec_receive_packet     \
6165                   -Wl,--wrap,avcodec_send_frame         \
6166                   -Wl,--wrap,avcodec_receive_frame      \
6167                   -Wl,--wrap,swr_convert                \
6168                   -Wl,--wrap,avresample_convert ||
6169     disable neon_clobber_test
6170
6171 enabled xmm_clobber_test &&
6172     check_ldflags -Wl,--wrap,avcodec_open2              \
6173                   -Wl,--wrap,avcodec_decode_audio4      \
6174                   -Wl,--wrap,avcodec_decode_video2      \
6175                   -Wl,--wrap,avcodec_decode_subtitle2   \
6176                   -Wl,--wrap,avcodec_encode_audio2      \
6177                   -Wl,--wrap,avcodec_encode_video2      \
6178                   -Wl,--wrap,avcodec_encode_subtitle    \
6179                   -Wl,--wrap,avcodec_send_packet        \
6180                   -Wl,--wrap,avcodec_receive_packet     \
6181                   -Wl,--wrap,avcodec_send_frame         \
6182                   -Wl,--wrap,avcodec_receive_frame      \
6183                   -Wl,--wrap,swr_convert                \
6184                   -Wl,--wrap,avresample_convert         \
6185                   -Wl,--wrap,sws_scale ||
6186     disable xmm_clobber_test
6187
6188 check_ld "cc" <<EOF && enable proper_dce
6189 extern const int array[512];
6190 static inline int func(void) { return array[0]; }
6191 int main(void) { return 0; }
6192 EOF
6193
6194 if enabled proper_dce; then
6195     echo "X { local: *; };" > $TMPV
6196     if test_ldflags -Wl,${version_script},$TMPV; then
6197         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6198         check_cc <<EOF && enable symver_asm_label
6199 void ff_foo(void) __asm__ ("av_foo@VERSION");
6200 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6201 EOF
6202         check_cc <<EOF && enable symver_gnu_asm
6203 __asm__(".symver ff_foo,av_foo@VERSION");
6204 void ff_foo(void) {}
6205 EOF
6206     fi
6207 fi
6208
6209 if [ -z "$optflags" ]; then
6210     if enabled small; then
6211         optflags=$cflags_size
6212     elif enabled optimizations; then
6213         optflags=$cflags_speed
6214     else
6215         optflags=$cflags_noopt
6216     fi
6217 fi
6218
6219 check_optflags(){
6220     check_cflags "$@"
6221     enabled lto && check_ldflags "$@"
6222 }
6223
6224
6225 if enabled lto; then
6226     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6227     check_cflags  -flto
6228     check_ldflags -flto $cpuflags
6229     disable inline_asm_direct_symbol_refs
6230 fi
6231
6232 check_optflags $optflags
6233 check_optflags -fno-math-errno
6234 check_optflags -fno-signed-zeros
6235
6236 enabled ftrapv && check_cflags -ftrapv
6237
6238 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6239 int x;
6240 EOF
6241
6242
6243 if enabled icc; then
6244     # Just warnings, no remarks
6245     check_cflags -w1
6246     # -wd: Disable following warnings
6247     # 144, 167, 556: -Wno-pointer-sign
6248     # 188: enumerated type mixed with another type
6249     # 1292: attribute "foo" ignored
6250     # 1419: external declaration in primary source file
6251     # 10006: ignoring unknown option -fno-signed-zeros
6252     # 10148: ignoring unknown option -Wno-parentheses
6253     # 10156: ignoring option '-W'; no argument required
6254     # 13200: No EMMS instruction before call to function
6255     # 13203: No EMMS instruction before return from function
6256     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6257     # 11030: Warning unknown option --as-needed
6258     # 10156: ignoring option '-export'; no argument required
6259     check_ldflags -wd10156,11030
6260     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6261     enable ebp_available
6262     # The test above does not test linking
6263     enabled lto && disable symver_asm_label
6264     if enabled x86_32; then
6265         icc_version=$($cc -dumpversion)
6266         test ${icc_version%%.*} -ge 11 &&
6267             check_cflags -falign-stack=maintain-16-byte ||
6268             disable aligned_stack
6269     fi
6270 elif enabled ccc; then
6271     # disable some annoying warnings
6272     add_cflags -msg_disable bitnotint
6273     add_cflags -msg_disable mixfuncvoid
6274     add_cflags -msg_disable nonstandcast
6275     add_cflags -msg_disable unsupieee
6276 elif enabled gcc; then
6277     check_optflags -fno-tree-vectorize
6278     check_cflags -Werror=format-security
6279     check_cflags -Werror=implicit-function-declaration
6280     check_cflags -Werror=missing-prototypes
6281     check_cflags -Werror=return-type
6282     check_cflags -Werror=vla
6283     check_cflags -Wformat
6284     check_cflags -fdiagnostics-color=auto
6285     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6286 elif enabled llvm_gcc; then
6287     check_cflags -mllvm -stack-alignment=16
6288 elif enabled clang; then
6289     check_cflags -mllvm -stack-alignment=16
6290     check_cflags -mstack-alignment=16
6291     check_cflags -Qunused-arguments
6292     check_cflags -Werror=implicit-function-declaration
6293     check_cflags -Werror=missing-prototypes
6294     check_cflags -Werror=return-type
6295 elif enabled cparser; then
6296     add_cflags -Wno-missing-variable-declarations
6297     add_cflags -Wno-empty-statement
6298 elif enabled armcc; then
6299     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6300     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6301     # 2523: use of inline assembly is deprecated
6302     add_cflags -W${armcc_opt},--diag_suppress=2523
6303     add_cflags -W${armcc_opt},--diag_suppress=1207
6304     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6305     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6306     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6307     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6308 elif enabled tms470; then
6309     add_cflags -pds=824 -pds=837
6310     disable inline_asm
6311 elif enabled pathscale; then
6312     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6313 elif enabled_any msvc icl; then
6314     enabled x86_32 && disable aligned_stack
6315     enabled_all x86_32 debug && add_cflags -Oy-
6316     enabled debug && add_ldflags -debug
6317     enable pragma_deprecated
6318     if enabled icl; then
6319         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6320         # (correctly) on icl 13.x.
6321         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6322             add_cflags -Qansi-alias
6323         # Some inline asm is not compilable in debug
6324         if enabled debug; then
6325             disable ebp_available
6326             disable ebx_available
6327         fi
6328     fi
6329     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6330     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
6331     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6332     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6333     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6334     # MSVC 2013 and newer can handle it fine.
6335     # If this declspec fails, force including stdlib.h before the restrict redefinition
6336     # happens in config.h.
6337     if [ $_restrict != restrict ]; then
6338         check_cc <<EOF || add_cflags -FIstdlib.h
6339 __declspec($_restrict) void* foo(int);
6340 EOF
6341     fi
6342     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6343     # Issue has been fixed in MSVC v19.00.24218.
6344     check_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6345         check_cflags -d2SSAOptimizer-
6346     # enable utf-8 source processing on VS2015 U2 and newer
6347     check_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6348         add_cflags -utf-8
6349 fi
6350
6351 for pfx in "" host_; do
6352     varname=${pfx%_}cc_type
6353     eval "type=\$$varname"
6354     if [ $type = "msvc" ]; then
6355         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6356 static inline int foo(int a) { return a; }
6357 EOF
6358     fi
6359 done
6360
6361 case $as_type in
6362     clang)
6363         add_asflags -Qunused-arguments
6364     ;;
6365 esac
6366
6367 case $ld_type in
6368     clang)
6369         check_ldflags -Qunused-arguments
6370     ;;
6371 esac
6372
6373 case $target_os in
6374     osf1)
6375         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
6376     ;;
6377 esac
6378
6379 enable frame_thread_encoder
6380
6381 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6382
6383 check_deps $CONFIG_LIST       \
6384            $CONFIG_EXTRA      \
6385            $HAVE_LIST         \
6386            $ALL_COMPONENTS    \
6387
6388 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"
6389
6390
6391 if test $target_os = "haiku"; then
6392     disable memalign
6393     disable posix_memalign
6394 fi
6395
6396 enabled_all dxva2 dxva2api_cobj CoTaskMemFree &&
6397     prepend ffmpeg_libs $($ldflags_filter "-lole32") &&
6398     enable dxva2_lib
6399
6400 # add_dep lib dep
6401 # -> enable ${lib}_deps_${dep}
6402 # -> add $dep to ${lib}_deps only once
6403 add_dep() {
6404     lib=$1
6405     dep=$2
6406     enabled "${lib}_deps_${dep}" && return 0
6407     enable  "${lib}_deps_${dep}"
6408     prepend "${lib}_deps" $dep
6409 }
6410
6411 # merge deps lib components
6412 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
6413 merge_deps() {
6414     lib=$1
6415     shift
6416     for comp in $*; do
6417         enabled $comp || continue
6418         eval "dep=\"\$${comp}_deps\""
6419         for d in $dep; do
6420             add_dep $lib $d
6421         done
6422     done
6423 }
6424
6425 merge_deps libavfilter $FILTER_LIST
6426
6427 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6428
6429 for thread in $THREADS_LIST; do
6430     if enabled $thread; then
6431         test -n "$thread_type" &&
6432             die "ERROR: Only one thread type must be selected." ||
6433             thread_type="$thread"
6434     fi
6435 done
6436
6437 if disabled stdatomic_h; then
6438     if enabled atomics_gcc; then
6439         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6440     elif enabled atomics_win32; then
6441         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6442     elif enabled atomics_suncc; then
6443         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6444     elif enabled pthreads; then
6445         add_compat atomics/pthread/stdatomic.o
6446         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6447     else
6448         enabled threads && die "Threading is enabled, but no atomics are available"
6449         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6450     fi
6451 fi
6452
6453 # Check if requested libraries were found.
6454 for lib in $AUTODETECT_LIBS; do
6455     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6456 done
6457
6458 enabled zlib && add_cppflags -DZLIB_CONST
6459
6460 # conditional library dependencies, in linking order
6461 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6462 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6463 enabled aresample_filter    && prepend avfilter_deps "swresample"
6464 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6465 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6466 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6467 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6468 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6469 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6470 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6471 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6472 enabled pan_filter          && prepend avfilter_deps "swresample"
6473 enabled pp_filter           && prepend avfilter_deps "postproc"
6474 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6475 enabled resample_filter && prepend avfilter_deps "avresample"
6476 enabled sab_filter          && prepend avfilter_deps "swscale"
6477 enabled scale_filter    && prepend avfilter_deps "swscale"
6478 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6479 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6480 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6481 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6482 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6483 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6484 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6485 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6486 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6487
6488 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6489
6490 enabled opus_decoder    && prepend avcodec_deps "swresample"
6491
6492 expand_deps(){
6493     lib_deps=${1}_deps
6494     eval "deps=\$$lib_deps"
6495     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6496     unique $lib_deps
6497 }
6498
6499 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6500 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6501
6502 map 'expand_deps $v' $LIBRARY_LIST
6503
6504 license="LGPL version 2.1 or later"
6505 if enabled nonfree; then
6506     license="nonfree and unredistributable"
6507 elif enabled gplv3; then
6508     license="GPL version 3 or later"
6509 elif enabled lgplv3; then
6510     license="LGPL version 3 or later"
6511 elif enabled gpl; then
6512     license="GPL version 2 or later"
6513 fi
6514
6515 if test "$quiet" != "yes"; then
6516
6517 echo "install prefix            $prefix"
6518 echo "source path               $source_path"
6519 echo "C compiler                $cc"
6520 echo "C library                 $libc_type"
6521 if test "$host_cc" != "$cc"; then
6522     echo "host C compiler           $host_cc"
6523     echo "host C library            $host_libc_type"
6524 fi
6525 echo "ARCH                      $arch ($cpu)"
6526 if test "$build_suffix" != ""; then
6527     echo "build suffix              $build_suffix"
6528 fi
6529 if test "$progs_suffix" != ""; then
6530     echo "progs suffix              $progs_suffix"
6531 fi
6532 if test "$extra_version" != ""; then
6533     echo "version string suffix     $extra_version"
6534 fi
6535 echo "big-endian                ${bigendian-no}"
6536 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6537 if enabled x86; then
6538     echo "${yasmexe}                      ${yasm-no}"
6539     echo "MMX enabled               ${mmx-no}"
6540     echo "MMXEXT enabled            ${mmxext-no}"
6541     echo "3DNow! enabled            ${amd3dnow-no}"
6542     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6543     echo "SSE enabled               ${sse-no}"
6544     echo "SSSE3 enabled             ${ssse3-no}"
6545     echo "AESNI enabled             ${aesni-no}"
6546     echo "AVX enabled               ${avx-no}"
6547     echo "XOP enabled               ${xop-no}"
6548     echo "FMA3 enabled              ${fma3-no}"
6549     echo "FMA4 enabled              ${fma4-no}"
6550     echo "i686 features enabled     ${i686-no}"
6551     echo "CMOV is fast              ${fast_cmov-no}"
6552     echo "EBX available             ${ebx_available-no}"
6553     echo "EBP available             ${ebp_available-no}"
6554 fi
6555 if enabled aarch64; then
6556     echo "NEON enabled              ${neon-no}"
6557     echo "VFP enabled               ${vfp-no}"
6558 fi
6559 if enabled arm; then
6560     echo "ARMv5TE enabled           ${armv5te-no}"
6561     echo "ARMv6 enabled             ${armv6-no}"
6562     echo "ARMv6T2 enabled           ${armv6t2-no}"
6563     echo "VFP enabled               ${vfp-no}"
6564     echo "NEON enabled              ${neon-no}"
6565     echo "THUMB enabled             ${thumb-no}"
6566 fi
6567 if enabled mips; then
6568     echo "MIPS FPU enabled          ${mipsfpu-no}"
6569     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6570     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6571     echo "MIPS MSA enabled          ${msa-no}"
6572     echo "LOONGSON MMI enabled      ${mmi-no}"
6573 fi
6574 if enabled ppc; then
6575     echo "AltiVec enabled           ${altivec-no}"
6576     echo "VSX enabled               ${vsx-no}"
6577     echo "POWER8 enabled            ${power8-no}"
6578     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6579     echo "dcbzl available           ${dcbzl-no}"
6580 fi
6581 echo "debug symbols             ${debug-no}"
6582 echo "strip symbols             ${stripping-no}"
6583 echo "optimize for size         ${small-no}"
6584 echo "optimizations             ${optimizations-no}"
6585 echo "static                    ${static-no}"
6586 echo "shared                    ${shared-no}"
6587 echo "postprocessing support    ${postproc-no}"
6588 echo "network support           ${network-no}"
6589 echo "threading support         ${thread_type-no}"
6590 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6591 echo "texi2html enabled         ${texi2html-no}"
6592 echo "perl enabled              ${perl-no}"
6593 echo "pod2man enabled           ${pod2man-no}"
6594 echo "makeinfo enabled          ${makeinfo-no}"
6595 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6596 test -n "$random_seed" &&
6597     echo "random seed               ${random_seed}"
6598 echo
6599
6600 echo "External libraries:"
6601 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_in_columns
6602 echo
6603
6604 echo "External libraries providing hardware acceleration:"
6605 print_enabled '' $HWACCEL_LIBRARY_LIST | print_in_columns
6606 echo
6607
6608 echo "Libraries:"
6609 print_enabled '' $LIBRARY_LIST | print_in_columns
6610 echo
6611
6612 echo "Programs:"
6613 print_enabled '' $PROGRAM_LIST | print_in_columns
6614 echo
6615
6616 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6617     echo "Enabled ${type}s:"
6618     eval list=\$$(toupper $type)_LIST
6619     print_enabled '_*' $list | print_in_columns
6620     echo
6621 done
6622
6623 echo "License: $license"
6624
6625 echo "Creating configuration files ..."
6626
6627 fi # test "$quiet" != "yes"
6628
6629 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6630
6631 enabled stripping || strip="echo skipping strip"
6632
6633 config_files="$TMPH config.mak doc/config.texi"
6634
6635 cat > config.mak <<EOF
6636 # Automatically generated by configure - do not modify!
6637 ifndef FFMPEG_CONFIG_MAK
6638 FFMPEG_CONFIG_MAK=1
6639 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6640 prefix=$prefix
6641 LIBDIR=\$(DESTDIR)$libdir
6642 SHLIBDIR=\$(DESTDIR)$shlibdir
6643 INCDIR=\$(DESTDIR)$incdir
6644 BINDIR=\$(DESTDIR)$bindir
6645 DATADIR=\$(DESTDIR)$datadir
6646 DOCDIR=\$(DESTDIR)$docdir
6647 MANDIR=\$(DESTDIR)$mandir
6648 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6649 INSTALL_NAME_DIR=$install_name_dir
6650 SRC_PATH=$source_path
6651 SRC_LINK=$source_link
6652 ifndef MAIN_MAKEFILE
6653 SRC_PATH:=\$(SRC_PATH:.%=..%)
6654 endif
6655 CC_IDENT=$cc_ident
6656 ARCH=$arch
6657 INTRINSICS=$intrinsics
6658 CC=$cc
6659 CXX=$cxx
6660 AS=$as
6661 OBJCC=$objcc
6662 LD=$ld
6663 DEPCC=$dep_cc
6664 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6665 DEPAS=$as
6666 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6667 YASM=$yasmexe
6668 DEPYASM=$yasmexe
6669 AR=$ar
6670 ARFLAGS=$arflags
6671 AR_O=$ar_o
6672 RANLIB=$ranlib
6673 STRIP=$strip
6674 CP=cp -p
6675 LN_S=$ln_s
6676 CPPFLAGS=$CPPFLAGS
6677 CFLAGS=$CFLAGS
6678 CXXFLAGS=$CXXFLAGS
6679 OBJCFLAGS=$OBJCFLAGS
6680 ASFLAGS=$ASFLAGS
6681 AS_C=$AS_C
6682 AS_O=$AS_O
6683 OBJCC_C=$OBJCC_C
6684 OBJCC_E=$OBJCC_E
6685 OBJCC_O=$OBJCC_O
6686 CC_C=$CC_C
6687 CC_E=$CC_E
6688 CC_O=$CC_O
6689 CXX_C=$CXX_C
6690 CXX_O=$CXX_O
6691 LD_O=$LD_O
6692 LD_LIB=$LD_LIB
6693 LD_PATH=$LD_PATH
6694 DLLTOOL=$dlltool
6695 WINDRES=$windres
6696 DEPWINDRES=$dep_cc
6697 DOXYGEN=$doxygen
6698 LDFLAGS=$LDFLAGS
6699 LDEXEFLAGS=$LDEXEFLAGS
6700 LDLIBFLAGS=$LDLIBFLAGS
6701 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
6702 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
6703 YASMFLAGS=$YASMFLAGS
6704 BUILDSUF=$build_suffix
6705 PROGSSUF=$progs_suffix
6706 FULLNAME=$FULLNAME
6707 LIBPREF=$LIBPREF
6708 LIBSUF=$LIBSUF
6709 LIBNAME=$LIBNAME
6710 SLIBPREF=$SLIBPREF
6711 SLIBSUF=$SLIBSUF
6712 EXESUF=$EXESUF
6713 EXTRA_VERSION=$extra_version
6714 CCDEP=$CCDEP
6715 CXXDEP=$CXXDEP
6716 CCDEP_FLAGS=$CCDEP_FLAGS
6717 ASDEP=$ASDEP
6718 ASDEP_FLAGS=$ASDEP_FLAGS
6719 CC_DEPFLAGS=$CC_DEPFLAGS
6720 AS_DEPFLAGS=$AS_DEPFLAGS
6721 HOSTCC=$host_cc
6722 HOSTLD=$host_ld
6723 HOSTCFLAGS=$host_cflags
6724 HOSTCPPFLAGS=$host_cppflags
6725 HOSTEXESUF=$HOSTEXESUF
6726 HOSTLDFLAGS=$host_ldflags
6727 HOSTLIBS=$host_libs
6728 DEPHOSTCC=$host_cc
6729 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
6730 HOSTCCDEP=$HOSTCCDEP
6731 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
6732 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
6733 HOSTCC_C=$HOSTCC_C
6734 HOSTCC_O=$HOSTCC_O
6735 HOSTLD_O=$HOSTLD_O
6736 TARGET_EXEC=$target_exec $target_exec_args
6737 TARGET_PATH=$target_path
6738 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
6739 CFLAGS-ffplay=${sdl2_cflags}
6740 CFLAGS_HEADERS=$CFLAGS_HEADERS
6741 ZLIB=$($ldflags_filter -lz)
6742 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
6743 EXTRALIBS=$extralibs
6744 COMPAT_OBJS=$compat_objs
6745 INSTALL=$install
6746 LIBTARGET=${LIBTARGET}
6747 SLIBNAME=${SLIBNAME}
6748 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
6749 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
6750 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
6751 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
6752 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
6753 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
6754 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
6755 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
6756 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
6757 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
6758 NOREDZONE_FLAGS=$noredzone_flags
6759 EOF
6760
6761 get_version(){
6762     lcname=lib${1}
6763     name=$(toupper $lcname)
6764     file=$source_path/$lcname/version.h
6765     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
6766     enabled raise_major && eval ${name}_VERSION_MAJOR=$((${name}_VERSION_MAJOR+100))
6767     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
6768     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
6769     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
6770     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
6771 }
6772
6773 map 'get_version $v' $LIBRARY_LIST
6774
6775 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> config.mak' $LIBRARY_LIST
6776
6777 print_program_libs(){
6778     eval "program_libs=\$${1}_libs"
6779     eval echo "LIBS-${1}=${program_libs}" >> config.mak
6780 }
6781
6782 map 'print_program_libs $v' $PROGRAM_LIST
6783
6784 cat > $TMPH <<EOF
6785 /* Automatically generated by configure - do not modify! */
6786 #ifndef FFMPEG_CONFIG_H
6787 #define FFMPEG_CONFIG_H
6788 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
6789 #define FFMPEG_LICENSE "$(c_escape $license)"
6790 #define CONFIG_THIS_YEAR 2017
6791 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
6792 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
6793 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
6794 #define av_restrict $_restrict
6795 #define EXTERN_PREFIX "${extern_prefix}"
6796 #define EXTERN_ASM ${extern_prefix}
6797 #define BUILDSUF "$build_suffix"
6798 #define SLIBSUF "$SLIBSUF"
6799 #define HAVE_MMX2 HAVE_MMXEXT
6800 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
6801 EOF
6802
6803 test -n "$assert_level" &&
6804     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
6805
6806 test -n "$malloc_prefix" &&
6807     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
6808
6809 if enabled yasm; then
6810     append config_files $TMPASM
6811     printf '' >$TMPASM
6812 fi
6813
6814 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
6815
6816
6817 mkdir -p doc
6818 mkdir -p tests
6819 mkdir -p tests/api
6820 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
6821
6822 print_config ARCH_   "$config_files" $ARCH_LIST
6823 print_config HAVE_   "$config_files" $HAVE_LIST
6824 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
6825                                      $CONFIG_EXTRA      \
6826                                      $ALL_COMPONENTS    \
6827
6828 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
6829 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
6830
6831 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
6832 cp_if_changed $TMPH config.h
6833 touch .config
6834
6835 enabled yasm && cp_if_changed $TMPASM config.asm
6836
6837 cat > $TMPH <<EOF
6838 /* Generated by ffconf */
6839 #ifndef AVUTIL_AVCONFIG_H
6840 #define AVUTIL_AVCONFIG_H
6841 EOF
6842
6843 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
6844
6845 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
6846
6847 cp_if_changed $TMPH libavutil/avconfig.h
6848
6849 # generate the lists of enabled components
6850 print_enabled_components(){
6851     file=$1
6852     struct_name=$2
6853     name=$3
6854     shift 3
6855     echo "static const $struct_name *$name[] = {" > $TMPH
6856     for c in $*; do
6857         enabled $c && printf "    &ff_%s,\n" $c >> $TMPH
6858     done
6859     echo "    NULL };" >> $TMPH
6860     cp_if_changed $TMPH $file
6861 }
6862
6863 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
6864 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
6865
6866 if test -n "$WARNINGS"; then
6867     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
6868     enabled fatal_warnings && exit 1
6869 fi
6870
6871 # build pkg-config files
6872
6873 lib_version(){
6874     eval printf "\"lib${1}${build_suffix} >= \$LIB$(toupper ${1})_VERSION, \""
6875 }
6876
6877 pkgconfig_generate(){
6878     name=$1
6879     shortname=${name#lib}${build_suffix}
6880     comment=$2
6881     version=$3
6882     libs=$4
6883     requires=$(map 'lib_version $v' $(eval echo \$${name#lib}_deps))
6884     requires=${requires%, }
6885     enabled ${name#lib} || return 0
6886     mkdir -p $name
6887     cat <<EOF > $name/$name${build_suffix}.pc
6888 prefix=$prefix
6889 exec_prefix=\${prefix}
6890 libdir=$libdir
6891 includedir=$incdir
6892
6893 Name: $name
6894 Description: $comment
6895 Version: $version
6896 Requires: $(enabled shared || echo $requires)
6897 Requires.private: $(enabled shared && echo $requires)
6898 Conflicts:
6899 Libs: -L\${libdir} $(enabled rpath && echo "-Wl,-rpath,\${libdir}") -l${shortname} $(enabled shared || echo $libs)
6900 Libs.private: $(enabled shared && echo $libs)
6901 Cflags: -I\${includedir}
6902 EOF
6903
6904 mkdir -p doc/examples/pc-uninstalled
6905 includedir=${source_path}
6906 [ "$includedir" = . ] && includedir="\${pcfiledir}/../../.."
6907     cat <<EOF > doc/examples/pc-uninstalled/${name}-uninstalled.pc
6908 prefix=
6909 exec_prefix=
6910 libdir=\${pcfiledir}/../../../$name
6911 includedir=${includedir}
6912
6913 Name: $name
6914 Description: $comment
6915 Version: $version
6916 Requires: $requires
6917 Conflicts:
6918 Libs: -L\${libdir} -Wl,-rpath,\${libdir} -l${shortname} $(enabled shared || echo $libs)
6919 Cflags: -I\${includedir}
6920 EOF
6921 }
6922
6923 pkgconfig_generate libavutil     "FFmpeg utility library"               "$LIBAVUTIL_VERSION"     "$LIBRT $LIBM"
6924 pkgconfig_generate libavcodec    "FFmpeg codec library"                 "$LIBAVCODEC_VERSION"    "$extralibs"
6925 pkgconfig_generate libavformat   "FFmpeg container format library"      "$LIBAVFORMAT_VERSION"   "$extralibs"
6926 pkgconfig_generate libavdevice   "FFmpeg device handling library"       "$LIBAVDEVICE_VERSION"   "$extralibs"
6927 pkgconfig_generate libavfilter   "FFmpeg audio/video filtering library" "$LIBAVFILTER_VERSION"   "$extralibs"
6928 pkgconfig_generate libpostproc   "FFmpeg postprocessing library"        "$LIBPOSTPROC_VERSION"   ""
6929 pkgconfig_generate libavresample "Libav audio resampling library"       "$LIBAVRESAMPLE_VERSION" "$LIBM"
6930 pkgconfig_generate libswscale    "FFmpeg image rescaling library"       "$LIBSWSCALE_VERSION"    "$LIBM"
6931 pkgconfig_generate libswresample "FFmpeg audio resampling library"      "$LIBSWRESAMPLE_VERSION" "$LIBM $LIBSOXR"