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:$PATH
  58
  59 show_help(){
  60     cat <<EOF
  61 Usage: configure [options]
  62 Options: [defaults in brackets after descriptions]
  63
  64 Help options:
  65   --help                   print this message
  66   --quiet                  Suppress showing informative output
  67   --list-decoders          show all available decoders
  68   --list-encoders          show all available encoders
  69   --list-hwaccels          show all available hardware accelerators
  70   --list-demuxers          show all available demuxers
  71   --list-muxers            show all available muxers
  72   --list-parsers           show all available parsers
  73   --list-protocols         show all available protocols
  74   --list-bsfs              show all available bitstream filters
  75   --list-indevs            show all available input devices
  76   --list-outdevs           show all available output devices
  77   --list-filters           show all available filters
  78
  79 Standard options:
  80   --logfile=FILE           log tests and output to FILE [ffbuild/config.log]
  81   --disable-logging        do not log configure debug information
  82   --fatal-warnings         fail if any configure warning is generated
  83   --prefix=PREFIX          install in PREFIX [$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
 113 Program options:
 114   --disable-programs       do not build command line programs
 115   --disable-ffmpeg         disable ffmpeg build
 116   --disable-ffplay         disable ffplay build
 117   --disable-ffprobe        disable ffprobe build
 118   --disable-ffserver       disable ffserver build
 119
 120 Documentation options:
 121   --disable-doc            do not build documentation
 122   --disable-htmlpages      do not build HTML documentation pages
 123   --disable-manpages       do not build man documentation pages
 124   --disable-podpages       do not build POD documentation pages
 125   --disable-txtpages       do not build text documentation pages
 126
 127 Component options:
 128   --disable-avdevice       disable libavdevice build
 129   --disable-avcodec        disable libavcodec build
 130   --disable-avformat       disable libavformat build
 131   --disable-swresample     disable libswresample build
 132   --disable-swscale        disable libswscale build
 133   --disable-postproc       disable libpostproc build
 134   --disable-avfilter       disable libavfilter build
 135   --enable-avresample      enable libavresample build [no]
 136   --disable-pthreads       disable pthreads [autodetect]
 137   --disable-w32threads     disable Win32 threads [autodetect]
 138   --disable-os2threads     disable OS/2 threads [autodetect]
 139   --disable-network        disable network support [no]
 140   --disable-dct            disable DCT code
 141   --disable-dwt            disable DWT code
 142   --disable-error-resilience disable error resilience code
 143   --disable-lsp            disable LSP code
 144   --disable-lzo            disable LZO decoder code
 145   --disable-mdct           disable MDCT code
 146   --disable-rdft           disable RDFT code
 147   --disable-fft            disable FFT code
 148   --disable-faan           disable floating point AAN (I)DCT code
 149   --disable-pixelutils     disable pixel utils in libavutil
 150
 151 Individual component options:
 152   --disable-everything     disable all components listed below
 153   --disable-encoder=NAME   disable encoder NAME
 154   --enable-encoder=NAME    enable encoder NAME
 155   --disable-encoders       disable all encoders
 156   --disable-decoder=NAME   disable decoder NAME
 157   --enable-decoder=NAME    enable decoder NAME
 158   --disable-decoders       disable all decoders
 159   --disable-hwaccel=NAME   disable hwaccel NAME
 160   --enable-hwaccel=NAME    enable hwaccel NAME
 161   --disable-hwaccels       disable all hwaccels
 162   --disable-muxer=NAME     disable muxer NAME
 163   --enable-muxer=NAME      enable muxer NAME
 164   --disable-muxers         disable all muxers
 165   --disable-demuxer=NAME   disable demuxer NAME
 166   --enable-demuxer=NAME    enable demuxer NAME
 167   --disable-demuxers       disable all demuxers
 168   --enable-parser=NAME     enable parser NAME
 169   --disable-parser=NAME    disable parser NAME
 170   --disable-parsers        disable all parsers
 171   --enable-bsf=NAME        enable bitstream filter NAME
 172   --disable-bsf=NAME       disable bitstream filter NAME
 173   --disable-bsfs           disable all bitstream filters
 174   --enable-protocol=NAME   enable protocol NAME
 175   --disable-protocol=NAME  disable protocol NAME
 176   --disable-protocols      disable all protocols
 177   --enable-indev=NAME      enable input device NAME
 178   --disable-indev=NAME     disable input device NAME
 179   --disable-indevs         disable input devices
 180   --enable-outdev=NAME     enable output device NAME
 181   --disable-outdev=NAME    disable output device NAME
 182   --disable-outdevs        disable output devices
 183   --disable-devices        disable all devices
 184   --enable-filter=NAME     enable filter NAME
 185   --disable-filter=NAME    disable filter NAME
 186   --disable-filters        disable all filters
 187
 188 External library support:
 189
 190   Using any of the following switches will allow FFmpeg to link to the
 191   corresponding external library. All the components depending on that library
 192   will become enabled, if all their other dependencies are met and they are not
 193   explicitly disabled. E.g. --enable-libwavpack will enable linking to
 194   libwavpack and allow the libwavpack encoder to be built, unless it is
 195   specifically disabled with --disable-encoder=libwavpack.
 196
 197   Note that only the system libraries are auto-detected. All the other external
 198   libraries must be explicitly enabled.
 199
 200   Also note that the following help text describes the purpose of the libraries
 201   themselves, not all their features will necessarily be usable by FFmpeg.
 202
 203   --enable-avisynth        enable reading of AviSynth script files [no]
 204   --disable-bzlib          disable bzlib [autodetect]
 205   --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
 206   --enable-frei0r          enable frei0r video filtering [no]
 207   --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
 208                            if openssl, librtmp or gmp is not used [no]
 209   --enable-gmp             enable gmp, needed for rtmp(t)e support
 210                            if openssl or librtmp is not used [no]
 211   --enable-gnutls          enable gnutls, needed for https support
 212                            if openssl is not used [no]
 213   --disable-iconv          disable iconv [autodetect]
 214   --enable-jni             enable JNI support [no]
 215   --enable-ladspa          enable LADSPA audio filtering [no]
 216   --enable-libass          enable libass subtitles rendering,
 217                            needed for subtitles and ass filter [no]
 218   --enable-libbluray       enable BluRay reading using libbluray [no]
 219   --enable-libbs2b         enable bs2b DSP library [no]
 220   --enable-libcaca         enable textual display using libcaca [no]
 221   --enable-libcelt         enable CELT decoding via libcelt [no]
 222   --enable-libcdio         enable audio CD grabbing with libcdio [no]
 223   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 224                            and libraw1394 [no]
 225   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 226   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 227   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
 228   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
 229   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
 230   --enable-libgme          enable Game Music Emu via libgme [no]
 231   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 232   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 233   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 234   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
 235   --enable-libmodplug      enable ModPlug via libmodplug [no]
 236   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 237   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 238   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 239   --enable-libopencv       enable video filtering via libopencv [no]
 240   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 241   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 242   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
 243   --enable-libopus         enable Opus de/encoding via libopus [no]
 244   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 245   --enable-librsvg         enable SVG rasterization via librsvg [no]
 246   --enable-librubberband   enable rubberband needed for rubberband filter [no]
 247   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 248   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 249   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 250   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
 251   --enable-libsoxr         enable Include libsoxr resampling [no]
 252   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 253   --enable-libssh          enable SFTP protocol via libssh [no]
 254   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
 255   --enable-libtheora       enable Theora encoding via libtheora [no]
 256   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 257   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 258   --enable-libvidstab      enable video stabilization using vid.stab [no]
 259   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 260   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 261                            native implementation exists [no]
 262   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 263   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 264   --enable-libwebp         enable WebP encoding via libwebp [no]
 265   --enable-libx264         enable H.264 encoding via x264 [no]
 266   --enable-libx265         enable HEVC encoding via x265 [no]
 267   --enable-libxavs         enable AVS encoding via xavs [no]
 268   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
 269   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
 270   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
 271   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
 272   --enable-libxvid         enable Xvid encoding via xvidcore,
 273                            native MPEG-4/Xvid encoder exists [no]
 274   --enable-libzimg         enable z.lib, needed for zscale filter [no]
 275   --enable-libzmq          enable message passing via libzmq [no]
 276   --enable-libzvbi         enable teletext support via libzvbi [no]
 277   --disable-lzma           disable lzma [autodetect]
 278   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
 279   --enable-mediacodec      enable Android MediaCodec support [no]
 280   --enable-libmysofa       enable libmysofa, needed for sofalizer filter [no]
 281   --enable-openal          enable OpenAL 1.1 capture support [no]
 282   --enable-opencl          enable OpenCL code
 283   --enable-opengl          enable OpenGL rendering [no]
 284   --enable-openssl         enable openssl, needed for https support
 285                            if gnutls is not used [no]
 286   --disable-schannel       disable SChannel SSP, needed for TLS support on
 287                            Windows if openssl and gnutls are not used [autodetect]
 288   --disable-sdl2           disable sdl2 [autodetect]
 289   --disable-securetransport disable Secure Transport, needed for TLS support
 290                            on OSX if openssl and gnutls are not used [autodetect]
 291   --disable-xlib           disable xlib [autodetect]
 292   --disable-zlib           disable zlib [autodetect]
 293
 294   The following libraries provide various hardware acceleration features:
 295   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
 296   --disable-cuda           disable dynamically linked Nvidia CUDA code [autodetect]
 297   --enable-cuda-sdk        enable CUDA features that require the CUDA SDK [no]
 298   --disable-cuvid          disable Nvidia CUVID support [autodetect]
 299   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
 300   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
 301   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
 302   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
 303   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
 304   --disable-nvenc          disable Nvidia video encoding code [autodetect]
 305   --enable-omx             enable OpenMAX IL code [no]
 306   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
 307   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
 308   --disable-vda            disable Apple Video Decode Acceleration code [autodetect]
 309   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
 310   --disable-videotoolbox   disable VideoToolbox code [autodetect]
 311
 312 Toolchain options:
 313   --arch=ARCH              select architecture [$arch]
 314   --cpu=CPU                select the minimum required CPU (affects
 315                            instruction selection, may crash on older CPUs)
 316   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 317   --progs-suffix=SUFFIX    program name suffix []
 318   --enable-cross-compile   assume a cross-compiler is used
 319   --sysroot=PATH           root of cross-build tree
 320   --sysinclude=PATH        location of cross-build system headers
 321   --target-os=OS           compiler targets OS [$target_os]
 322   --target-exec=CMD        command to run executables on target
 323   --target-path=DIR        path to view of build directory on target
 324   --target-samples=DIR     path to samples directory on target
 325   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 326   --toolchain=NAME         set tool defaults according to NAME
 327   --nm=NM                  use nm tool NM [$nm_default]
 328   --ar=AR                  use archive tool AR [$ar_default]
 329   --as=AS                  use assembler AS [$as_default]
 330   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
 331   --strip=STRIP            use strip tool STRIP [$strip_default]
 332   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 333   --x86asmexe=EXE          use nasm-compatible assembler EXE [$x86asmexe_default]
 334   --cc=CC                  use C compiler CC [$cc_default]
 335   --cxx=CXX                use C compiler CXX [$cxx_default]
 336   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 337   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 338   --nvcc=NVCC              use Nvidia CUDA compiler NVCC [$nvcc_default]
 339   --ld=LD                  use linker LD [$ld_default]
 340   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 341   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 342   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 343   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 344   --host-cc=HOSTCC         use host C compiler HOSTCC
 345   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 346   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 347   --host-ld=HOSTLD         use host linker HOSTLD
 348   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 349   --host-libs=HLIBS        use libs HLIBS when linking for host
 350   --host-os=OS             compiler host OS [$target_os]
 351   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 352   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 353   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 354   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 355   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 356   --extra-ldlibflags=ELDFLAGS add ELDFLAGS to LDLIBFLAGS [$LDLIBFLAGS]
 357   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 358   --extra-version=STRING   version string suffix []
 359   --optflags=OPTFLAGS      override optimization-related compiler flags
 360   --nvccflags=NVCCFLAGS    override nvcc flags [$nvccflags_default]
 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-x86asm         disable use of standalone x86 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   --enable-osfuzz          Enable building fuzzer tool
 442   --libfuzzer=PATH         path to libfuzzer
 443   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
 444                            in the name) of tests whose result is ignored
 445
 446 NOTE: Object files are built at the place where configure is launched.
 447 EOF
 448   exit 0
 449 }
 450
 451 quotes='""'
 452 if test -t 1 && which tput >/dev/null 2>&1; then
 453     ncolors=$(tput colors)
 454     if test -n "$ncolors" && test $ncolors -ge 8; then
 455         bold_color=$(tput bold)
 456         warn_color=$(tput setaf 3)
 457         error_color=$(tput setaf 1)
 458         reset_color=$(tput sgr0)
 459     fi
 460     # 72 used instead of 80 since that's the default of pr
 461     ncols=$(tput cols)
 462 fi
 463 : ${ncols:=72}
 464
 465 log(){
 466     echo "$@" >> $logfile
 467 }
 468
 469 log_file(){
 470     log BEGIN $1
 471     pr -n -t $1 >> $logfile
 472     log END $1
 473 }
 474
 475 warn(){
 476     log "WARNING: $*"
 477     WARNINGS="${WARNINGS}WARNING: $*\n"
 478 }
 479
 480 die(){
 481     log "$@"
 482     echo "$error_color$bold_color$@$reset_color"
 483     cat <<EOF
 484
 485 If you think configure made a mistake, make sure you are using the latest
 486 version from Git.  If the latest version fails, report the problem to the
 487 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 488 EOF
 489     if disabled logging; then
 490         cat <<EOF
 491 Rerun configure with logging enabled (do not use --disable-logging), and
 492 include the log this produces with your report.
 493 EOF
 494     else
 495         cat <<EOF
 496 Include the log file "$logfile" produced by configure as this will help
 497 solve the problem.
 498 EOF
 499     fi
 500     exit 1
 501 }
 502
 503 # Avoid locale weirdness, besides we really just want to translate ASCII.
 504 toupper(){
 505     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 506 }
 507
 508 tolower(){
 509     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 510 }
 511
 512 c_escape(){
 513     echo "$*" | sed 's/["\\]/\\\0/g'
 514 }
 515
 516 sh_quote(){
 517     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 518     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 519     echo "$v"
 520 }
 521
 522 cleanws(){
 523     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 524 }
 525
 526 filter(){
 527     pat=$1
 528     shift
 529     for v; do
 530         eval "case $v in $pat) printf '%s ' $v ;; esac"
 531     done
 532 }
 533
 534 filter_out(){
 535     pat=$1
 536     shift
 537     for v; do
 538         eval "case $v in $pat) ;; *) printf '%s ' $v ;; esac"
 539     done
 540 }
 541
 542 map(){
 543     m=$1
 544     shift
 545     for v; do eval $m; done
 546 }
 547
 548 add_suffix(){
 549     suffix=$1
 550     shift
 551     for v; do echo ${v}${suffix}; done
 552 }
 553
 554 set_all(){
 555     value=$1
 556     shift
 557     for var in $*; do
 558         eval $var=$value
 559     done
 560 }
 561
 562 set_weak(){
 563     value=$1
 564     shift
 565     for var; do
 566         eval : \${$var:=$value}
 567     done
 568 }
 569
 570 sanitize_var_name(){
 571     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 572 }
 573
 574 set_safe(){
 575     var=$1
 576     shift
 577     eval $(sanitize_var_name "$var")='$*'
 578 }
 579
 580 get_safe(){
 581     eval echo \$$(sanitize_var_name "$1")
 582 }
 583
 584 pushvar(){
 585     for pvar in $*; do
 586         eval level=\${${pvar}_level:=0}
 587         eval ${pvar}_${level}="\$$pvar"
 588         eval ${pvar}_level=$(($level+1))
 589     done
 590 }
 591
 592 popvar(){
 593     for pvar in $*; do
 594         eval level=\${${pvar}_level:-0}
 595         test $level = 0 && continue
 596         eval level=$(($level-1))
 597         eval $pvar="\${${pvar}_${level}}"
 598         eval ${pvar}_level=$level
 599         eval unset ${pvar}_${level}
 600     done
 601 }
 602
 603 request(){
 604     for var in $*; do
 605         eval ${var}_requested=yes
 606         eval $var=
 607     done
 608 }
 609
 610 enable(){
 611     set_all yes $*
 612 }
 613
 614 disable(){
 615     set_all no $*
 616 }
 617
 618 enable_weak(){
 619     set_weak yes $*
 620 }
 621
 622 disable_weak(){
 623     set_weak no $*
 624 }
 625
 626 enable_safe(){
 627     for var; do
 628         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 629     done
 630 }
 631
 632 disable_safe(){
 633     for var; do
 634         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 635     done
 636 }
 637
 638 do_enable_deep(){
 639     for var; do
 640         enabled $var && continue
 641         eval sel="\$${var}_select"
 642         eval sgs="\$${var}_suggest"
 643         pushvar var sgs
 644         enable_deep $sel
 645         popvar sgs
 646         enable_deep_weak $sgs
 647         popvar var
 648     done
 649 }
 650
 651 enable_deep(){
 652     do_enable_deep $*
 653     enable $*
 654 }
 655
 656 enable_deep_weak(){
 657     for var; do
 658         disabled $var && continue
 659         pushvar var
 660         do_enable_deep $var
 661         popvar var
 662         enable_weak $var
 663     done
 664 }
 665
 666 requested(){
 667     test "${1#!}" = "$1" && op='=' || op=!=
 668     eval test "x\$${1#!}_requested" $op "xyes"
 669 }
 670
 671 enabled(){
 672     test "${1#!}" = "$1" && op='=' || op=!=
 673     eval test "x\$${1#!}" $op "xyes"
 674 }
 675
 676 disabled(){
 677     test "${1#!}" = "$1" && op='=' || op=!=
 678     eval test "x\$${1#!}" $op "xno"
 679 }
 680
 681 enabled_all(){
 682     for opt; do
 683         enabled $opt || return 1
 684     done
 685 }
 686
 687 disabled_all(){
 688     for opt; do
 689         disabled $opt || return 1
 690     done
 691 }
 692
 693 enabled_any(){
 694     for opt; do
 695         enabled $opt && return 0
 696     done
 697 }
 698
 699 disabled_any(){
 700     for opt; do
 701         disabled $opt && return 0
 702     done
 703     return 1
 704 }
 705
 706 set_default(){
 707     for opt; do
 708         eval : \${$opt:=\$${opt}_default}
 709     done
 710 }
 711
 712 is_in(){
 713     value=$1
 714     shift
 715     for var in $*; do
 716         [ $var = $value ] && return 0
 717     done
 718     return 1
 719 }
 720
 721 do_check_deps(){
 722     for cfg; do
 723         cfg="${cfg#!}"
 724         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 725         disabled ${cfg}_checking && continue
 726         enable ${cfg}_checking
 727         append allopts $cfg
 728
 729         eval dep_all="\$${cfg}_deps"
 730         eval dep_any="\$${cfg}_deps_any"
 731         eval dep_sel="\$${cfg}_select"
 732         eval dep_sgs="\$${cfg}_suggest"
 733         eval dep_ifa="\$${cfg}_if"
 734         eval dep_ifn="\$${cfg}_if_any"
 735
 736         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 737         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
 738         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 739
 740         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 741         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 742         enabled_all  $dep_all || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not all dependencies are satisfied: $dep_all"; }
 743         enabled_any  $dep_any || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not any dependency is satisfied: $dep_any"; }
 744         disabled_any $dep_sel && { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some selected dependency is unsatisfied: $dep_sel"; }
 745
 746         if enabled $cfg; then
 747             enable_deep $dep_sel
 748             enable_deep_weak $dep_sgs
 749         fi
 750
 751         disable ${cfg}_checking
 752     done
 753 }
 754
 755 check_deps(){
 756     unset allopts
 757
 758     do_check_deps "$@"
 759
 760     for cfg in $allopts; do
 761         enabled $cfg || continue
 762         eval dep_extralibs="\$${cfg}_extralibs"
 763         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
 764     done
 765 }
 766
 767 print_config(){
 768     pfx=$1
 769     files=$2
 770     shift 2
 771     map 'eval echo "$v \${$v:-no}"' "$@" |
 772     awk "BEGIN { split(\"$files\", files) }
 773         {
 774             c = \"$pfx\" toupper(\$1);
 775             v = \$2;
 776             sub(/yes/, 1, v);
 777             sub(/no/,  0, v);
 778             for (f in files) {
 779                 file = files[f];
 780                 if (file ~ /\\.h\$/) {
 781                     printf(\"#define %s %d\\n\", c, v) >>file;
 782                 } else if (file ~ /\\.asm\$/) {
 783                     printf(\"%%define %s %d\\n\", c, v) >>file;
 784                 } else if (file ~ /\\.mak\$/) {
 785                     n = -v ? \"\" : \"!\";
 786                     printf(\"%s%s=yes\\n\", n, c) >>file;
 787                 } else if (file ~ /\\.texi\$/) {
 788                     pre = -v ? \"\" : \"@c \";
 789                     yesno = \$2;
 790                     c2 = tolower(c);
 791                     gsub(/_/, \"-\", c2);
 792                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 793                 }
 794             }
 795         }"
 796 }
 797
 798 print_enabled(){
 799     suf=$1
 800     shift
 801     for v; do
 802         enabled $v && printf "%s\n" ${v%$suf}
 803     done
 804 }
 805
 806 append(){
 807     var=$1
 808     shift
 809     eval "$var=\"\$$var $*\""
 810 }
 811
 812 prepend(){
 813     var=$1
 814     shift
 815     eval "$var=\"$* \$$var\""
 816 }
 817
 818 unique(){
 819     var=$1
 820     uniq_list=""
 821     for tok in $(eval echo \$$var); do
 822         uniq_list="$(filter_out $tok $uniq_list) $tok"
 823     done
 824     eval "$var=\"${uniq_list}\""
 825 }
 826
 827 add_cppflags(){
 828     append CPPFLAGS "$@"
 829 }
 830
 831 add_cflags(){
 832     append CFLAGS $($cflags_filter "$@")
 833 }
 834
 835 add_cflags_headers(){
 836     append CFLAGS_HEADERS $($cflags_filter "$@")
 837 }
 838
 839 add_cxxflags(){
 840     append CXXFLAGS $($cflags_filter "$@")
 841 }
 842
 843 add_asflags(){
 844     append ASFLAGS $($asflags_filter "$@")
 845 }
 846
 847 add_objcflags(){
 848     append OBJCFLAGS $($objcflags_filter "$@")
 849 }
 850
 851 add_ldflags(){
 852     append LDFLAGS $($ldflags_filter "$@")
 853 }
 854
 855 add_ldexeflags(){
 856     append LDEXEFLAGS $($ldflags_filter "$@")
 857 }
 858
 859 add_ldlibflags(){
 860     append LDLIBFLAGS $($ldflags_filter "$@")
 861 }
 862
 863 add_stripflags(){
 864     append ASMSTRIPFLAGS "$@"
 865 }
 866
 867 add_extralibs(){
 868     prepend extralibs $($ldflags_filter "$@")
 869 }
 870
 871 add_host_cppflags(){
 872     append host_cppflags "$@"
 873 }
 874
 875 add_host_cflags(){
 876     append host_cflags $($host_cflags_filter "$@")
 877 }
 878
 879 add_host_ldflags(){
 880     append host_ldflags $($host_ldflags_filter "$@")
 881 }
 882
 883 add_compat(){
 884     append compat_objs $1
 885     shift
 886     map 'add_cppflags -D$v' "$@"
 887 }
 888
 889 check_cmd(){
 890     log "$@"
 891     "$@" >> $logfile 2>&1
 892 }
 893
 894 check_stat(){
 895     log check_stat "$@"
 896     stat "$1" >> $logfile 2>&1
 897 }
 898
 899 cc_o(){
 900     eval printf '%s\\n' $CC_O
 901 }
 902
 903 cc_e(){
 904     eval printf '%s\\n' $CC_E
 905 }
 906
 907 check_cc(){
 908     log check_cc "$@"
 909     cat > $TMPC
 910     log_file $TMPC
 911     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 912 }
 913
 914 check_cxx(){
 915     log check_cxx "$@"
 916     cat > $TMPCPP
 917     log_file $TMPCPP
 918     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 919 }
 920
 921 check_objcc(){
 922     log check_objcc "$@"
 923     cat > $TMPM
 924     log_file $TMPM
 925     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
 926 }
 927
 928 check_cpp(){
 929     log check_cpp "$@"
 930     cat > $TMPC
 931     log_file $TMPC
 932     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 933 }
 934
 935 as_o(){
 936     eval printf '%s\\n' $AS_O
 937 }
 938
 939 check_as(){
 940     log check_as "$@"
 941     cat > $TMPS
 942     log_file $TMPS
 943     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 944 }
 945
 946 check_inline_asm(){
 947     log check_inline_asm "$@"
 948     name="$1"
 949     code="$2"
 950     shift 2
 951     disable $name
 952     check_cc "$@" <<EOF && enable $name
 953 void foo(void){ __asm__ volatile($code); }
 954 EOF
 955 }
 956
 957 check_inline_asm_flags(){
 958     log check_inline_asm_flags "$@"
 959     name="$1"
 960     code="$2"
 961     flags=''
 962     shift 2
 963     while [ "$1" != "" ]; do
 964       append flags $1
 965       shift
 966     done;
 967     disable $name
 968     cat > $TMPC <<EOF
 969 void foo(void){ __asm__ volatile($code); }
 970 EOF
 971     log_file $TMPC
 972     check_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
 973     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
 974 }
 975
 976 check_insn(){
 977     log check_insn "$@"
 978     check_inline_asm ${1}_inline "\"$2\""
 979     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 980 }
 981
 982 check_x86asm(){
 983     log check_x86asm "$@"
 984     echo "$1" > $TMPS
 985     log_file $TMPS
 986     shift 1
 987     check_cmd $x86asmexe $X86ASMFLAGS -Werror "$@" -o $TMPO $TMPS
 988 }
 989
 990 ld_o(){
 991     eval printf '%s\\n' $LD_O
 992 }
 993
 994 check_ld(){
 995     log check_ld "$@"
 996     type=$1
 997     shift 1
 998     flags=$(filter_out '-l*|*.so' $@)
 999     libs=$(filter '-l*|*.so' $@)
1000     check_$type $($cflags_filter $flags) || return
1001     flags=$($ldflags_filter $flags)
1002     libs=$($ldflags_filter $libs)
1003     check_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1004 }
1005
1006 print_include(){
1007     hdr=$1
1008     test "${hdr%.h}" = "${hdr}" &&
1009         echo "#include $hdr"    ||
1010         echo "#include <$hdr>"
1011 }
1012
1013 check_code(){
1014     log check_code "$@"
1015     check=$1
1016     headers=$2
1017     code=$3
1018     shift 3
1019     {
1020         for hdr in $headers; do
1021             print_include $hdr
1022         done
1023         echo "int main(void) { $code; return 0; }"
1024     } | check_$check "$@"
1025 }
1026
1027 check_cppflags(){
1028     log check_cppflags "$@"
1029     check_cpp "$@" <<EOF && append CPPFLAGS "$@"
1030 int x;
1031 EOF
1032 }
1033
1034 test_cflags(){
1035     log test_cflags "$@"
1036     set -- $($cflags_filter "$@")
1037     check_cc "$@" <<EOF
1038 int x;
1039 EOF
1040 }
1041
1042 check_cflags(){
1043     log check_cflags "$@"
1044     test_cflags "$@" && add_cflags "$@"
1045 }
1046
1047 check_cxxflags(){
1048     log check_cxxflags "$@"
1049     set -- $($cflags_filter "$@")
1050     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
1051 int x;
1052 EOF
1053 }
1054
1055 test_objcflags(){
1056     log test_objcflags "$@"
1057     set -- $($objcflags_filter "$@")
1058     check_objcc "$@" <<EOF
1059 int x;
1060 EOF
1061 }
1062
1063 check_objcflags(){
1064     log check_objcflags "$@"
1065     test_objcflags "$@" && add_objcflags "$@"
1066 }
1067
1068 test_ldflags(){
1069     log test_ldflags "$@"
1070     check_ld "cc" "$@" <<EOF
1071 int main(void){ return 0; }
1072 EOF
1073 }
1074
1075 check_ldflags(){
1076     log check_ldflags "$@"
1077     test_ldflags "$@" && add_ldflags "$@"
1078 }
1079
1080 test_stripflags(){
1081     log test_stripflags "$@"
1082     # call check_cc to get a fresh TMPO
1083     check_cc <<EOF
1084 int main(void) { return 0; }
1085 EOF
1086     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1087 }
1088
1089 check_stripflags(){
1090     log check_stripflags "$@"
1091     test_stripflags "$@" && add_stripflags "$@"
1092 }
1093
1094 check_header(){
1095     log check_header "$@"
1096     header=$1
1097     shift
1098     disable_safe $header
1099     check_cpp "$@" <<EOF && enable_safe $header
1100 #include <$header>
1101 int x;
1102 EOF
1103 }
1104
1105 check_header_objcc(){
1106     log check_header_objcc "$@"
1107     rm -f -- "$TMPO"
1108     header=$1
1109     shift
1110     disable_safe $header
1111     {
1112        echo "#include <$header>"
1113        echo "int main(void) { return 0; }"
1114     } | check_objcc && check_stat "$TMPO" && enable_safe $headers
1115 }
1116
1117 check_func(){
1118     log check_func "$@"
1119     func=$1
1120     shift
1121     disable $func
1122     check_ld "cc" "$@" <<EOF && enable $func
1123 extern int $func();
1124 int main(void){ $func(); }
1125 EOF
1126 }
1127
1128 check_complexfunc(){
1129     log check_complexfunc "$@"
1130     func=$1
1131     narg=$2
1132     shift 2
1133     test $narg = 2 && args="f, g" || args="f * I"
1134     disable $func
1135     check_ld "cc" "$@" <<EOF && enable $func
1136 #include <complex.h>
1137 #include <math.h>
1138 float foo(complex float f, complex float g) { return $func($args); }
1139 int main(void){ return (int) foo; }
1140 EOF
1141 }
1142
1143 check_mathfunc(){
1144     log check_mathfunc "$@"
1145     func=$1
1146     narg=$2
1147     shift 2
1148     test $narg = 2 && args="f, g" || args="f"
1149     disable $func
1150     check_ld "cc" "$@" <<EOF && enable $func
1151 #include <math.h>
1152 float foo(float f, float g) { return $func($args); }
1153 int main(void){ return (int) foo; }
1154 EOF
1155 }
1156
1157 check_func_headers(){
1158     log check_func_headers "$@"
1159     headers=$1
1160     funcs=$2
1161     shift 2
1162     {
1163         for hdr in $headers; do
1164             print_include $hdr
1165         done
1166         echo "#include <stdint.h>"
1167         for func in $funcs; do
1168             echo "long check_$func(void) { return (long) $func; }"
1169         done
1170         echo "int main(void) { int ret = 0;"
1171         # LTO could optimize out the test functions without this
1172         for func in $funcs; do
1173             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1174         done
1175         echo "return ret; }"
1176     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1177 }
1178
1179 check_class_headers_cpp(){
1180     log check_class_headers_cpp "$@"
1181     headers=$1
1182     classes=$2
1183     shift 2
1184     {
1185         for hdr in $headers; do
1186             echo "#include <$hdr>"
1187         done
1188         echo "int main(void) { "
1189         i=1
1190         for class in $classes; do
1191             echo "$class obj$i;"
1192             i=$(expr $i + 1)
1193         done
1194         echo "return 0; }"
1195     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1196 }
1197
1198 check_cpp_condition(){
1199     log check_cpp_condition "$@"
1200     header=$1
1201     condition=$2
1202     shift 2
1203     check_cpp "$@" <<EOF
1204 #include <$header>
1205 #if !($condition)
1206 #error "unsatisfied condition: $condition"
1207 #endif
1208 EOF
1209 }
1210
1211 test_cflags_cc(){
1212     log test_cflags_cc "$@"
1213     flags=$1
1214     header=$2
1215     condition=$3
1216     shift 3
1217     set -- $($cflags_filter "$flags")
1218     check_cc "$@" <<EOF
1219 #include <$header>
1220 #if !($condition)
1221 #error "unsatisfied condition: $condition"
1222 #endif
1223 EOF
1224 }
1225
1226 check_lib(){
1227     log check_lib "$@"
1228     name="$1"
1229     headers="$2"
1230     funcs="$3"
1231     shift 3
1232     disable $name
1233     check_func_headers "$headers" "$funcs" "$@" &&
1234         enable $name && add_extralibs "$@"
1235 }
1236
1237 check_lib_cpp(){
1238     log check_lib_cpp "$@"
1239     headers="$1"
1240     classes="$2"
1241     shift 2
1242     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1243 }
1244
1245 check_pkg_config(){
1246     log check_pkg_config "$@"
1247     pkg_version="$1"
1248     pkg="${1%% *}"
1249     headers="$2"
1250     funcs="$3"
1251     shift 3
1252     check_cmd $pkg_config --exists --print-errors $pkg_version || return
1253     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1254     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1255     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1256         set_safe "${pkg}_cflags"    $pkg_cflags &&
1257         set_safe "${pkg}_extralibs" $pkg_libs
1258 }
1259
1260 check_exec(){
1261     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1262 }
1263
1264 check_exec_crash(){
1265     log check_exec_crash "$@"
1266     code=$(cat)
1267
1268     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1269     # are safe but may not be available everywhere.  Thus we use
1270     # raise(SIGTERM) instead.  The check is run in a subshell so we
1271     # can redirect the "Terminated" message from the shell.  SIGBUS
1272     # is not defined by standard C so it is used conditionally.
1273
1274     (check_exec "$@") >> $logfile 2>&1 <<EOF
1275 #include <signal.h>
1276 static void sighandler(int sig){
1277     raise(SIGTERM);
1278 }
1279 int foo(void){
1280     $code
1281 }
1282 int (*func_ptr)(void) = foo;
1283 int main(void){
1284     signal(SIGILL, sighandler);
1285     signal(SIGFPE, sighandler);
1286     signal(SIGSEGV, sighandler);
1287 #ifdef SIGBUS
1288     signal(SIGBUS, sighandler);
1289 #endif
1290     return func_ptr();
1291 }
1292 EOF
1293 }
1294
1295 check_type(){
1296     log check_type "$@"
1297     headers=$1
1298     type=$2
1299     shift 2
1300     disable_safe "$type"
1301     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1302 }
1303
1304 check_struct(){
1305     log check_struct "$@"
1306     headers=$1
1307     struct=$2
1308     member=$3
1309     shift 3
1310     disable_safe "${struct}_${member}"
1311     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1312         enable_safe "${struct}_${member}"
1313 }
1314
1315 check_builtin(){
1316     log check_builtin "$@"
1317     name=$1
1318     headers=$2
1319     builtin=$3
1320     shift 3
1321     disable "$name"
1322     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1323 }
1324
1325 check_compile_assert(){
1326     log check_compile_assert "$@"
1327     name=$1
1328     headers=$2
1329     condition=$3
1330     shift 3
1331     disable "$name"
1332     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1333 }
1334
1335 require(){
1336     log require "$@"
1337     name_version="$1"
1338     name="${1%% *}"
1339     headers="$2"
1340     func="$3"
1341     shift 3
1342     check_lib $name "$headers" $func "$@" || die "ERROR: $name_version not found"
1343 }
1344
1345 require_cpp(){
1346     name="$1"
1347     headers="$2"
1348     classes="$3"
1349     shift 3
1350     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1351 }
1352
1353 use_pkg_config(){
1354     log use_pkg_config "$@"
1355     pkg="$1"
1356     check_pkg_config "$@" || return 1
1357     add_cflags    $(get_safe "${pkg}_cflags")
1358     add_extralibs $(get_safe "${pkg}_extralibs")
1359 }
1360
1361 require_pkg_config(){
1362     use_pkg_config "$@" || die "ERROR: $pkg not found using pkg-config$pkg_config_fail_message"
1363 }
1364
1365 hostcc_e(){
1366     eval printf '%s\\n' $HOSTCC_E
1367 }
1368
1369 hostcc_o(){
1370     eval printf '%s\\n' $HOSTCC_O
1371 }
1372
1373 check_host_cc(){
1374     log check_host_cc "$@"
1375     cat > $TMPC
1376     log_file $TMPC
1377     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1378 }
1379
1380 check_host_cpp(){
1381     log check_host_cpp "$@"
1382     cat > $TMPC
1383     log_file $TMPC
1384     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1385 }
1386
1387 check_host_cppflags(){
1388     log check_host_cppflags "$@"
1389     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1390 int x;
1391 EOF
1392 }
1393
1394 check_host_cflags(){
1395     log check_host_cflags "$@"
1396     set -- $($host_cflags_filter "$@")
1397     check_host_cc "$@" <<EOF && append host_cflags "$@"
1398 int x;
1399 EOF
1400 }
1401
1402 check_host_cpp_condition(){
1403     log check_host_cpp_condition "$@"
1404     header=$1
1405     condition=$2
1406     shift 2
1407     check_host_cpp "$@" <<EOF
1408 #include <$header>
1409 #if !($condition)
1410 #error "unsatisfied condition: $condition"
1411 #endif
1412 EOF
1413 }
1414
1415 cp_if_changed(){
1416     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1417     mkdir -p "$(dirname $2)"
1418     cp -f "$1" "$2"
1419 }
1420
1421 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1422 # system-dependent things.
1423
1424 AVCODEC_COMPONENTS="
1425     bsfs
1426     decoders
1427     encoders
1428     hwaccels
1429     parsers
1430 "
1431
1432 AVDEVICE_COMPONENTS="
1433     indevs
1434     outdevs
1435 "
1436 AVFILTER_COMPONENTS="
1437     filters
1438 "
1439 AVFORMAT_COMPONENTS="
1440     demuxers
1441     muxers
1442     protocols
1443 "
1444
1445 AVRESAMPLE_COMPONENTS=""
1446 AVUTIL_COMPONENTS=""
1447
1448 COMPONENT_LIST="
1449     $AVCODEC_COMPONENTS
1450     $AVDEVICE_COMPONENTS
1451     $AVFILTER_COMPONENTS
1452     $AVFORMAT_COMPONENTS
1453     $AVRESAMPLE_COMPONENTS
1454     $AVUTIL_COMPONENTS
1455 "
1456
1457 EXAMPLE_LIST="
1458     avio_dir_cmd_example
1459     avio_reading_example
1460     decode_audio_example
1461     decode_video_example
1462     demuxing_decoding_example
1463     encode_audio_example
1464     encode_video_example
1465     extract_mvs_example
1466     filter_audio_example
1467     filtering_audio_example
1468     filtering_video_example
1469     http_multiclient_example
1470     metadata_example
1471     muxing_example
1472     qsvdec_example
1473     remuxing_example
1474     resampling_audio_example
1475     scaling_video_example
1476     transcode_aac_example
1477     transcoding_example
1478 "
1479 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1480     bzlib
1481     iconv
1482     libxcb
1483     libxcb_shm
1484     libxcb_shape
1485     libxcb_xfixes
1486     lzma
1487     schannel
1488     sdl
1489     sdl2
1490     securetransport
1491     xlib
1492     zlib
1493 "
1494
1495 EXTERNAL_LIBRARY_GPL_LIST="
1496     avisynth
1497     frei0r
1498     libcdio
1499     librubberband
1500     libvidstab
1501     libx264
1502     libx265
1503     libxavs
1504     libxvid
1505 "
1506
1507 EXTERNAL_LIBRARY_NONFREE_LIST="
1508     decklink
1509     libfdk_aac
1510     openssl
1511 "
1512
1513 EXTERNAL_LIBRARY_VERSION3_LIST="
1514     gmp
1515     libopencore_amrnb
1516     libopencore_amrwb
1517     libvo_amrwbenc
1518 "
1519
1520 EXTERNAL_LIBRARY_GPLV3_LIST="
1521     libsmbclient
1522 "
1523
1524 EXTERNAL_LIBRARY_LIST="
1525     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1526     $EXTERNAL_LIBRARY_GPL_LIST
1527     $EXTERNAL_LIBRARY_NONFREE_LIST
1528     $EXTERNAL_LIBRARY_VERSION3_LIST
1529     $EXTERNAL_LIBRARY_GPLV3_LIST
1530     chromaprint
1531     crystalhd
1532     gcrypt
1533     gnutls
1534     jni
1535     ladspa
1536     libass
1537     libbluray
1538     libbs2b
1539     libcaca
1540     libcelt
1541     libdc1394
1542     libflite
1543     libfontconfig
1544     libfreetype
1545     libfribidi
1546     libgme
1547     libgsm
1548     libiec61883
1549     libilbc
1550     libkvazaar
1551     libmodplug
1552     libmp3lame
1553     libmysofa
1554     libopencv
1555     libopenh264
1556     libopenjpeg
1557     libopenmpt
1558     libopus
1559     libpulse
1560     librsvg
1561     librtmp
1562     libshine
1563     libsmbclient
1564     libsnappy
1565     libsoxr
1566     libspeex
1567     libssh
1568     libtesseract
1569     libtheora
1570     libtwolame
1571     libv4l2
1572     libvorbis
1573     libvpx
1574     libwavpack
1575     libwebp
1576     libzimg
1577     libzmq
1578     libzvbi
1579     mediacodec
1580     openal
1581     opencl
1582     opengl
1583     videotoolbox
1584 "
1585 HWACCEL_AUTODETECT_LIBRARY_LIST="
1586     audiotoolbox
1587     cuda
1588     cuvid
1589     d3d11va
1590     dxva2
1591     nvenc
1592     vaapi
1593     vda
1594     vdpau
1595     videotoolbox_hwaccel
1596     xvmc
1597 "
1598
1599 HWACCEL_LIBRARY_NONFREE_LIST="
1600     cuda_sdk
1601     libnpp
1602 "
1603
1604 HWACCEL_LIBRARY_LIST="
1605     $HWACCEL_AUTODETECT_LIBRARY_LIST
1606     $HWACCEL_LIBRARY_NONFREE_LIST
1607     libmfx
1608     mmal
1609     omx
1610 "
1611
1612 DOCUMENT_LIST="
1613     doc
1614     htmlpages
1615     manpages
1616     podpages
1617     txtpages
1618 "
1619
1620 FEATURE_LIST="
1621     ftrapv
1622     gray
1623     hardcoded_tables
1624     omx_rpi
1625     runtime_cpudetect
1626     safe_bitstream_reader
1627     shared
1628     small
1629     static
1630     swscale_alpha
1631 "
1632
1633 LIBRARY_LIST="
1634     avcodec
1635     avdevice
1636     avfilter
1637     avformat
1638     avresample
1639     avutil
1640     postproc
1641     swresample
1642     swscale
1643 "
1644
1645 LICENSE_LIST="
1646     gpl
1647     nonfree
1648     version3
1649 "
1650
1651 PROGRAM_LIST="
1652     ffplay
1653     ffprobe
1654     ffserver
1655     ffmpeg
1656 "
1657
1658 SUBSYSTEM_LIST="
1659     dct
1660     dwt
1661     error_resilience
1662     faan
1663     fast_unaligned
1664     fft
1665     lsp
1666     lzo
1667     mdct
1668     pixelutils
1669     network
1670     rdft
1671 "
1672
1673 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1674 CONFIG_LIST="
1675     $DOCUMENT_LIST
1676     $EXAMPLE_LIST
1677     $EXTERNAL_LIBRARY_LIST
1678     $HWACCEL_LIBRARY_LIST
1679     $FEATURE_LIST
1680     $LICENSE_LIST
1681     $LIBRARY_LIST
1682     $PROGRAM_LIST
1683     $SUBSYSTEM_LIST
1684     fontconfig
1685     memory_poisoning
1686     neon_clobber_test
1687     ossfuzz
1688     pic
1689     thumb
1690     valgrind_backtrace
1691     xmm_clobber_test
1692     $COMPONENT_LIST
1693 "
1694
1695 THREADS_LIST="
1696     pthreads
1697     os2threads
1698     w32threads
1699 "
1700
1701 ATOMICS_LIST="
1702     atomics_gcc
1703     atomics_suncc
1704     atomics_win32
1705 "
1706
1707 AUTODETECT_LIBS="
1708     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1709     $HWACCEL_AUTODETECT_LIBRARY_LIST
1710     $THREADS_LIST
1711 "
1712
1713 ARCH_LIST="
1714     aarch64
1715     alpha
1716     arm
1717     avr32
1718     avr32_ap
1719     avr32_uc
1720     bfin
1721     ia64
1722     m68k
1723     mips
1724     mips64
1725     parisc
1726     ppc
1727     ppc64
1728     s390
1729     sh4
1730     sparc
1731     sparc64
1732     tilegx
1733     tilepro
1734     tomi
1735     x86
1736     x86_32
1737     x86_64
1738 "
1739
1740 ARCH_EXT_LIST_ARM="
1741     armv5te
1742     armv6
1743     armv6t2
1744     armv8
1745     neon
1746     vfp
1747     vfpv3
1748     setend
1749 "
1750
1751 ARCH_EXT_LIST_MIPS="
1752     mipsfpu
1753     mips32r2
1754     mips32r5
1755     mips64r2
1756     mips32r6
1757     mips64r6
1758     mipsdsp
1759     mipsdspr2
1760     msa
1761 "
1762
1763 ARCH_EXT_LIST_LOONGSON="
1764     loongson2
1765     loongson3
1766     mmi
1767 "
1768
1769 ARCH_EXT_LIST_X86_SIMD="
1770     aesni
1771     amd3dnow
1772     amd3dnowext
1773     avx
1774     avx2
1775     fma3
1776     fma4
1777     mmx
1778     mmxext
1779     sse
1780     sse2
1781     sse3
1782     sse4
1783     sse42
1784     ssse3
1785     xop
1786 "
1787
1788 ARCH_EXT_LIST_PPC="
1789     altivec
1790     dcbzl
1791     ldbrx
1792     power8
1793     ppc4xx
1794     vsx
1795 "
1796
1797 ARCH_EXT_LIST_X86="
1798     $ARCH_EXT_LIST_X86_SIMD
1799     cpunop
1800     i686
1801 "
1802
1803 ARCH_EXT_LIST="
1804     $ARCH_EXT_LIST_ARM
1805     $ARCH_EXT_LIST_PPC
1806     $ARCH_EXT_LIST_X86
1807     $ARCH_EXT_LIST_MIPS
1808     $ARCH_EXT_LIST_LOONGSON
1809 "
1810
1811 ARCH_FEATURES="
1812     aligned_stack
1813     fast_64bit
1814     fast_clz
1815     fast_cmov
1816     local_aligned_8
1817     local_aligned_16
1818     local_aligned_32
1819     simd_align_16
1820     simd_align_32
1821 "
1822
1823 BUILTIN_LIST="
1824     atomic_cas_ptr
1825     machine_rw_barrier
1826     MemoryBarrier
1827     mm_empty
1828     rdtsc
1829     sarestart
1830     sem_timedwait
1831     sync_val_compare_and_swap
1832 "
1833 HAVE_LIST_CMDLINE="
1834     inline_asm
1835     symver
1836     x86asm
1837 "
1838
1839 HAVE_LIST_PUB="
1840     bigendian
1841     fast_unaligned
1842 "
1843
1844 HEADERS_LIST="
1845     alsa_asoundlib_h
1846     altivec_h
1847     arpa_inet_h
1848     asm_types_h
1849     cdio_paranoia_h
1850     cdio_paranoia_paranoia_h
1851     cuda_h
1852     d3d11_h
1853     dispatch_dispatch_h
1854     dev_bktr_ioctl_bt848_h
1855     dev_bktr_ioctl_meteor_h
1856     dev_ic_bt8xx_h
1857     dev_video_bktr_ioctl_bt848_h
1858     dev_video_meteor_ioctl_meteor_h
1859     direct_h
1860     dirent_h
1861     dlfcn_h
1862     dxgidebug_h
1863     dxva_h
1864     ES2_gl_h
1865     gsm_h
1866     io_h
1867     mach_mach_time_h
1868     machine_ioctl_bt848_h
1869     machine_ioctl_meteor_h
1870     malloc_h
1871     opencv2_core_core_c_h
1872     openjpeg_2_2_openjpeg_h
1873     openjpeg_2_1_openjpeg_h
1874     openjpeg_2_0_openjpeg_h
1875     openjpeg_1_5_openjpeg_h
1876     OpenGL_gl3_h
1877     poll_h
1878     sndio_h
1879     soundcard_h
1880     stdatomic_h
1881     sys_mman_h
1882     sys_param_h
1883     sys_resource_h
1884     sys_select_h
1885     sys_soundcard_h
1886     sys_time_h
1887     sys_un_h
1888     sys_videoio_h
1889     termios_h
1890     udplite_h
1891     unistd_h
1892     valgrind_valgrind_h
1893     windows_h
1894     winsock2_h
1895 "
1896
1897 INTRINSICS_LIST="
1898     intrinsics_neon
1899 "
1900
1901 COMPLEX_FUNCS="
1902     cabs
1903     cexp
1904 "
1905
1906 MATH_FUNCS="
1907     atanf
1908     atan2f
1909     cbrt
1910     cbrtf
1911     copysign
1912     cosf
1913     erf
1914     exp2
1915     exp2f
1916     expf
1917     hypot
1918     isfinite
1919     isinf
1920     isnan
1921     ldexpf
1922     llrint
1923     llrintf
1924     log2
1925     log2f
1926     log10f
1927     lrint
1928     lrintf
1929     powf
1930     rint
1931     round
1932     roundf
1933     sinf
1934     trunc
1935     truncf
1936 "
1937
1938 SYSTEM_FUNCS="
1939     access
1940     aligned_malloc
1941     arc4random
1942     clock_gettime
1943     closesocket
1944     CommandLineToArgvW
1945     CoTaskMemFree
1946     CryptGenRandom
1947     dlopen
1948     fcntl
1949     flt_lim
1950     fork
1951     getaddrinfo
1952     gethrtime
1953     getopt
1954     GetProcessAffinityMask
1955     GetProcessMemoryInfo
1956     GetProcessTimes
1957     getrusage
1958     GetSystemTimeAsFileTime
1959     gettimeofday
1960     glob
1961     glXGetProcAddress
1962     gmtime_r
1963     inet_aton
1964     isatty
1965     jack_port_get_latency_range
1966     kbhit
1967     LoadLibrary
1968     localtime_r
1969     lstat
1970     lzo1x_999_compress
1971     mach_absolute_time
1972     MapViewOfFile
1973     memalign
1974     mkstemp
1975     mmap
1976     mprotect
1977     nanosleep
1978     PeekNamedPipe
1979     posix_memalign
1980     pthread_cancel
1981     sched_getaffinity
1982     SetConsoleTextAttribute
1983     SetConsoleCtrlHandler
1984     setmode
1985     setrlimit
1986     Sleep
1987     strerror_r
1988     sysconf
1989     sysctl
1990     usleep
1991     UTGetOSTypeFromString
1992     VirtualAlloc
1993     wglGetProcAddress
1994 "
1995
1996 TOOLCHAIN_FEATURES="
1997     as_dn_directive
1998     as_fpu_directive
1999     as_func
2000     as_object_arch
2001     asm_mod_q
2002     attribute_may_alias
2003     attribute_packed
2004     blocks_extension
2005     ebp_available
2006     ebx_available
2007     gnu_as
2008     gnu_windres
2009     ibm_asm
2010     inline_asm_direct_symbol_refs
2011     inline_asm_labels
2012     inline_asm_nonlocal_labels
2013     pragma_deprecated
2014     rsync_contimeout
2015     symver_asm_label
2016     symver_gnu_asm
2017     vfp_args
2018     xform_asm
2019     xmm_clobbers
2020 "
2021
2022 TYPES_LIST="
2023     CONDITION_VARIABLE_Ptr
2024     socklen_t
2025     struct_addrinfo
2026     struct_group_source_req
2027     struct_ip_mreq_source
2028     struct_ipv6_mreq
2029     struct_msghdr_msg_flags
2030     struct_pollfd
2031     struct_rusage_ru_maxrss
2032     struct_sctp_event_subscribe
2033     struct_sockaddr_in6
2034     struct_sockaddr_sa_len
2035     struct_sockaddr_storage
2036     struct_stat_st_mtim_tv_nsec
2037     struct_v4l2_frmivalenum_discrete
2038 "
2039
2040 HAVE_LIST="
2041     $ARCH_EXT_LIST
2042     $(add_suffix _external $ARCH_EXT_LIST)
2043     $(add_suffix _inline   $ARCH_EXT_LIST)
2044     $ARCH_FEATURES
2045     $ATOMICS_LIST
2046     $BUILTIN_LIST
2047     $COMPLEX_FUNCS
2048     $HAVE_LIST_CMDLINE
2049     $HAVE_LIST_PUB
2050     $HEADERS_LIST
2051     $INTRINSICS_LIST
2052     $MATH_FUNCS
2053     $SYSTEM_FUNCS
2054     $THREADS_LIST
2055     $TOOLCHAIN_FEATURES
2056     $TYPES_LIST
2057     alsa
2058     atomics_native
2059     dos_paths
2060     jack
2061     libc_msvcrt
2062     makeinfo
2063     makeinfo_html
2064     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2065     perl
2066     pod2man
2067     sdl2
2068     section_data_rel_ro
2069     sndio
2070     texi2html
2071     threads
2072     vaapi_drm
2073     vaapi_x11
2074     vdpau_x11
2075     winrt
2076 "
2077
2078 # options emitted with CONFIG_ prefix but not available on the command line
2079 CONFIG_EXTRA="
2080     aandcttables
2081     ac3dsp
2082     audio_frame_queue
2083     audiodsp
2084     blockdsp
2085     bswapdsp
2086     cabac
2087     dirac_parse
2088     dvprofile
2089     exif
2090     faandct
2091     faanidct
2092     fdctdsp
2093     flacdsp
2094     fmtconvert
2095     frame_thread_encoder
2096     g722dsp
2097     golomb
2098     gplv3
2099     h263dsp
2100     h264chroma
2101     h264dsp
2102     h264parse
2103     h264pred
2104     h264qpel
2105     hevcparse
2106     hpeldsp
2107     huffman
2108     huffyuvdsp
2109     huffyuvencdsp
2110     idctdsp
2111     iirfilter
2112     mdct15
2113     intrax8
2114     iso_media
2115     ividsp
2116     jpegtables
2117     lgplv3
2118     libx262
2119     llauddsp
2120     llviddsp
2121     llvidencdsp
2122     lpc
2123     lzf
2124     me_cmp
2125     mpeg_er
2126     mpegaudio
2127     mpegaudiodsp
2128     mpegaudioheader
2129     mpegvideo
2130     mpegvideoenc
2131     mss34dsp
2132     pixblockdsp
2133     qpeldsp
2134     qsv
2135     qsvdec
2136     qsvenc
2137     rangecoder
2138     riffdec
2139     riffenc
2140     rtpdec
2141     rtpenc_chain
2142     rv34dsp
2143     sinewin
2144     snappy
2145     srtp
2146     startcode
2147     texturedsp
2148     texturedspenc
2149     tpeldsp
2150     vaapi_encode
2151     vc1dsp
2152     videodsp
2153     vp3dsp
2154     vp56dsp
2155     vp8dsp
2156     vt_bt2020
2157     wma_freqs
2158     wmv2dsp
2159 "
2160
2161 CMDLINE_SELECT="
2162     $ARCH_EXT_LIST
2163     $CONFIG_LIST
2164     $HAVE_LIST_CMDLINE
2165     $THREADS_LIST
2166     asm
2167     cross_compile
2168     debug
2169     extra_warnings
2170     logging
2171     lto
2172     optimizations
2173     rpath
2174     stripping
2175 "
2176
2177 PATHS_LIST="
2178     bindir
2179     datadir
2180     docdir
2181     incdir
2182     libdir
2183     mandir
2184     pkgconfigdir
2185     prefix
2186     shlibdir
2187     install_name_dir
2188 "
2189
2190 CMDLINE_SET="
2191     $PATHS_LIST
2192     ar
2193     arch
2194     as
2195     assert_level
2196     build_suffix
2197     cc
2198     objcc
2199     cpu
2200     cross_prefix
2201     custom_allocator
2202     cxx
2203     dep_cc
2204     doxygen
2205     env
2206     extra_version
2207     gas
2208     host_cc
2209     host_cflags
2210     host_extralibs
2211     host_ld
2212     host_ldflags
2213     host_os
2214     ignore_tests
2215     install
2216     ld
2217     ln_s
2218     logfile
2219     malloc_prefix
2220     nm
2221     optflags
2222     nvccflags
2223     pkg_config
2224     pkg_config_flags
2225     progs_suffix
2226     random_seed
2227     ranlib
2228     samples
2229     strip
2230     sws_max_filter_size
2231     sysinclude
2232     sysroot
2233     target_exec
2234     target_os
2235     target_path
2236     target_samples
2237     tempprefix
2238     toolchain
2239     valgrind
2240     x86asmexe
2241 "
2242
2243 CMDLINE_APPEND="
2244     extra_cflags
2245     extra_cxxflags
2246     extra_objcflags
2247     host_cppflags
2248 "
2249
2250 # code dependency declarations
2251
2252 # architecture extensions
2253
2254 armv5te_deps="arm"
2255 armv6_deps="arm"
2256 armv6t2_deps="arm"
2257 armv8_deps="aarch64"
2258 neon_deps_any="aarch64 arm"
2259 intrinsics_neon_deps="neon"
2260 vfp_deps_any="aarch64 arm"
2261 vfpv3_deps="vfp"
2262 setend_deps="arm"
2263
2264 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2265
2266 loongson2_deps="mips"
2267 loongson3_deps="mips"
2268 mipsfpu_deps="mips"
2269 mipsdsp_deps="mips"
2270 mipsdspr2_deps="mips"
2271 mips32r2_deps="mips"
2272 mips32r5_deps="mips"
2273 mips32r6_deps="mips"
2274 mips64r2_deps="mips"
2275 mips64r6_deps="mips"
2276 msa_deps="mipsfpu"
2277 mmi_deps="mips"
2278
2279 altivec_deps="ppc"
2280 dcbzl_deps="ppc"
2281 ldbrx_deps="ppc"
2282 ppc4xx_deps="ppc"
2283 vsx_deps="altivec"
2284 power8_deps="vsx"
2285
2286 cpunop_deps="i686"
2287 x86_64_select="i686"
2288 x86_64_suggest="fast_cmov"
2289
2290 amd3dnow_deps="mmx"
2291 amd3dnowext_deps="amd3dnow"
2292 i686_deps="x86"
2293 mmx_deps="x86"
2294 mmxext_deps="mmx"
2295 sse_deps="mmxext"
2296 sse2_deps="sse"
2297 sse3_deps="sse2"
2298 ssse3_deps="sse3"
2299 sse4_deps="ssse3"
2300 sse42_deps="sse4"
2301 aesni_deps="sse42"
2302 avx_deps="sse42"
2303 xop_deps="avx"
2304 fma3_deps="avx"
2305 fma4_deps="avx"
2306 avx2_deps="avx"
2307
2308 mmx_external_deps="x86asm"
2309 mmx_inline_deps="inline_asm"
2310 mmx_suggest="mmx_external mmx_inline"
2311
2312 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2313     eval dep=\$${ext}_deps
2314     eval ${ext}_external_deps='"${dep}_external"'
2315     eval ${ext}_inline_deps='"${dep}_inline"'
2316     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2317 done
2318
2319 aligned_stack_if_any="aarch64 ppc x86"
2320 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2321 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2322 fast_unaligned_if_any="aarch64 ppc x86"
2323 simd_align_16_if_any="altivec neon sse"
2324 simd_align_32_if_any="avx"
2325
2326 # system capabilities
2327 symver_if_any="symver_asm_label symver_gnu_asm"
2328 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
2329
2330 # threading support
2331 atomics_gcc_if="sync_val_compare_and_swap"
2332 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2333 atomics_win32_if="MemoryBarrier"
2334 atomics_native_if_any="$ATOMICS_LIST"
2335 w32threads_deps="atomics_native"
2336 threads_if_any="$THREADS_LIST"
2337
2338 # subsystems
2339 dct_select="rdft"
2340 dirac_parse_select="golomb"
2341 error_resilience_select="me_cmp"
2342 faandct_deps="faan fdctdsp"
2343 faanidct_deps="faan idctdsp"
2344 h264dsp_select="startcode"
2345 hevcparse_select="golomb"
2346 frame_thread_encoder_deps="encoders threads"
2347 intrax8_select="blockdsp idctdsp"
2348 mdct_select="fft"
2349 mdct15_select="fft"
2350 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2351 mpeg_er_select="error_resilience"
2352 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2353 mpegaudiodsp_select="dct"
2354 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2355 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2356 vc1dsp_select="h264chroma qpeldsp startcode"
2357 rdft_select="fft"
2358
2359 # decoders / encoders
2360 aac_decoder_select="mdct15 mdct sinewin"
2361 aac_fixed_decoder_select="mdct sinewin"
2362 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2363 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2364 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2365 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2366 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2367 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2368 adpcm_g722_decoder_select="g722dsp"
2369 adpcm_g722_encoder_select="g722dsp"
2370 aic_decoder_select="golomb idctdsp"
2371 alac_encoder_select="lpc"
2372 als_decoder_select="bswapdsp"
2373 amrnb_decoder_select="lsp"
2374 amrwb_decoder_select="lsp"
2375 amv_decoder_select="sp5x_decoder exif"
2376 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2377 ape_decoder_select="bswapdsp llauddsp"
2378 apng_decoder_select="zlib"
2379 apng_encoder_select="llvidencdsp zlib"
2380 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2381 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2382 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2383 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2384 atrac1_decoder_select="mdct sinewin"
2385 atrac3_decoder_select="mdct"
2386 atrac3p_decoder_select="mdct sinewin"
2387 avrn_decoder_select="exif jpegtables"
2388 bink_decoder_select="blockdsp hpeldsp"
2389 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2390 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2391 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2392 clearvideo_decoder_select="idctdsp"
2393 cllc_decoder_select="bswapdsp"
2394 comfortnoise_encoder_select="lpc"
2395 cook_decoder_select="audiodsp mdct sinewin"
2396 cscd_decoder_select="lzo"
2397 cscd_decoder_suggest="zlib"
2398 dca_decoder_select="mdct"
2399 dds_decoder_select="texturedsp"
2400 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2401 dnxhd_decoder_select="blockdsp idctdsp"
2402 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2403 dvvideo_decoder_select="dvprofile idctdsp"
2404 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2405 dxa_decoder_select="zlib"
2406 dxv_decoder_select="lzf texturedsp"
2407 eac3_decoder_select="ac3_decoder"
2408 eac3_encoder_select="ac3_encoder"
2409 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2410 eatgq_decoder_select="aandcttables"
2411 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2412 exr_decoder_select="zlib"
2413 ffv1_decoder_select="rangecoder"
2414 ffv1_encoder_select="rangecoder"
2415 ffvhuff_decoder_select="huffyuv_decoder"
2416 ffvhuff_encoder_select="huffyuv_encoder"
2417 fic_decoder_select="golomb"
2418 flac_decoder_select="flacdsp"
2419 flac_encoder_select="bswapdsp flacdsp lpc"
2420 flashsv2_decoder_select="zlib"
2421 flashsv2_encoder_select="zlib"
2422 flashsv_decoder_select="zlib"
2423 flashsv_encoder_select="zlib"
2424 flv_decoder_select="h263_decoder"
2425 flv_encoder_select="h263_encoder"
2426 fourxm_decoder_select="blockdsp bswapdsp"
2427 fraps_decoder_select="bswapdsp huffman"
2428 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2429 g729_decoder_select="audiodsp"
2430 h261_decoder_select="mpegvideo"
2431 h261_encoder_select="aandcttables mpegvideoenc"
2432 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2433 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2434 h263i_decoder_select="h263_decoder"
2435 h263p_decoder_select="h263_decoder"
2436 h263p_encoder_select="h263_encoder"
2437 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2438 h264_decoder_suggest="error_resilience"
2439 hap_decoder_select="snappy texturedsp"
2440 hap_encoder_deps="libsnappy"
2441 hap_encoder_select="texturedspenc"
2442 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2443 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2444 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2445 iac_decoder_select="imc_decoder"
2446 imc_decoder_select="bswapdsp fft mdct sinewin"
2447 indeo3_decoder_select="hpeldsp"
2448 indeo4_decoder_select="ividsp"
2449 indeo5_decoder_select="ividsp"
2450 interplay_video_decoder_select="hpeldsp"
2451 jpegls_decoder_select="mjpeg_decoder"
2452 jv_decoder_select="blockdsp"
2453 lagarith_decoder_select="llviddsp"
2454 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2455 magicyuv_decoder_select="llviddsp"
2456 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2457 metasound_decoder_select="lsp mdct sinewin"
2458 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2459 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2460 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2461 mjpegb_decoder_select="mjpeg_decoder"
2462 mlp_decoder_select="mlp_parser"
2463 mlp_encoder_select="lpc"
2464 motionpixels_decoder_select="bswapdsp"
2465 mp1_decoder_select="mpegaudio"
2466 mp1float_decoder_select="mpegaudio"
2467 mp2_decoder_select="mpegaudio"
2468 mp2float_decoder_select="mpegaudio"
2469 mp3_decoder_select="mpegaudio"
2470 mp3adu_decoder_select="mpegaudio"
2471 mp3adufloat_decoder_select="mpegaudio"
2472 mp3float_decoder_select="mpegaudio"
2473 mp3on4_decoder_select="mpegaudio"
2474 mp3on4float_decoder_select="mpegaudio"
2475 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2476 mpc8_decoder_select="mpegaudiodsp"
2477 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2478 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2479 mpegvideo_decoder_select="mpegvideo"
2480 mpeg1video_decoder_select="mpegvideo"
2481 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2482 mpeg2video_decoder_select="mpegvideo"
2483 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2484 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2485 mpeg4_encoder_select="h263_encoder"
2486 msa1_decoder_select="mss34dsp"
2487 mscc_decoder_select="zlib"
2488 msmpeg4v1_decoder_select="h263_decoder"
2489 msmpeg4v2_decoder_select="h263_decoder"
2490 msmpeg4v2_encoder_select="h263_encoder"
2491 msmpeg4v3_decoder_select="h263_decoder"
2492 msmpeg4v3_encoder_select="h263_encoder"
2493 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2494 mts2_decoder_select="mss34dsp"
2495 mxpeg_decoder_select="mjpeg_decoder"
2496 nellymoser_decoder_select="mdct sinewin"
2497 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2498 nuv_decoder_select="idctdsp lzo"
2499 on2avc_decoder_select="mdct"
2500 opus_decoder_deps="swresample"
2501 opus_decoder_select="mdct15"
2502 opus_encoder_select="audio_frame_queue mdct15"
2503 png_decoder_select="zlib"
2504 png_encoder_select="llvidencdsp zlib"
2505 prores_decoder_select="blockdsp idctdsp"
2506 prores_encoder_select="fdctdsp"
2507 qcelp_decoder_select="lsp"
2508 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2509 ra_144_decoder_select="audiodsp"
2510 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2511 ralf_decoder_select="golomb"
2512 rawvideo_decoder_select="bswapdsp"
2513 rscc_decoder_select="zlib"
2514 rtjpeg_decoder_select="me_cmp"
2515 rv10_decoder_select="h263_decoder"
2516 rv10_encoder_select="h263_encoder"
2517 rv20_decoder_select="h263_decoder"
2518 rv20_encoder_select="h263_encoder"
2519 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2520 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2521 screenpresso_decoder_select="zlib"
2522 shorten_decoder_select="bswapdsp"
2523 sipr_decoder_select="lsp"
2524 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2525 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2526 sonic_decoder_select="golomb rangecoder"
2527 sonic_encoder_select="golomb rangecoder"
2528 sonic_ls_encoder_select="golomb rangecoder"
2529 sp5x_decoder_select="mjpeg_decoder"
2530 srgc_decoder_select="zlib"
2531 svq1_decoder_select="hpeldsp"
2532 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2533 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2534 svq3_decoder_suggest="zlib"
2535 tak_decoder_select="audiodsp"
2536 tdsc_decoder_select="zlib mjpeg_decoder"
2537 theora_decoder_select="vp3_decoder"
2538 thp_decoder_select="mjpeg_decoder"
2539 tiff_decoder_suggest="zlib lzma"
2540 tiff_encoder_suggest="zlib"
2541 truehd_decoder_select="mlp_parser"
2542 truehd_encoder_select="lpc"
2543 truemotion2_decoder_select="bswapdsp"
2544 truespeech_decoder_select="bswapdsp"
2545 tscc_decoder_select="zlib"
2546 twinvq_decoder_select="mdct lsp sinewin"
2547 txd_decoder_select="texturedsp"
2548 utvideo_decoder_select="bswapdsp llviddsp"
2549 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2550 vble_decoder_select="llviddsp"
2551 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2552 vc1_qsv_decoder_deps="libmfx"
2553 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2554 vc1image_decoder_select="vc1_decoder"
2555 vorbis_decoder_select="mdct"
2556 vorbis_encoder_select="mdct"
2557 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2558 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2559 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2560 vp6a_decoder_select="vp6_decoder"
2561 vp6f_decoder_select="vp6_decoder"
2562 vp7_decoder_select="h264pred videodsp vp8dsp"
2563 vp8_decoder_select="h264pred videodsp vp8dsp"
2564 vp9_decoder_select="videodsp vp9_parser"
2565 webp_decoder_select="vp8_decoder exif"
2566 wmalossless_decoder_select="llauddsp"
2567 wmapro_decoder_select="mdct sinewin wma_freqs"
2568 wmav1_decoder_select="mdct sinewin wma_freqs"
2569 wmav1_encoder_select="mdct sinewin wma_freqs"
2570 wmav2_decoder_select="mdct sinewin wma_freqs"
2571 wmav2_encoder_select="mdct sinewin wma_freqs"
2572 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2573 wmv1_decoder_select="h263_decoder"
2574 wmv1_encoder_select="h263_encoder"
2575 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2576 wmv2_encoder_select="h263_encoder wmv2dsp"
2577 wmv3_decoder_select="vc1_decoder"
2578 wmv3image_decoder_select="wmv3_decoder"
2579 xma1_decoder_select="wmapro_decoder"
2580 xma2_decoder_select="wmapro_decoder"
2581 zerocodec_decoder_select="zlib"
2582 zlib_decoder_select="zlib"
2583 zlib_encoder_select="zlib"
2584 zmbv_decoder_select="zlib"
2585 zmbv_encoder_select="zlib"
2586
2587 # platform codecs
2588 audiotoolbox_deps="AudioToolbox_AudioToolbox_h"
2589 audiotoolbox_extralibs="-framework CoreFoundation -framework AudioToolbox -framework CoreMedia"
2590
2591 # hardware accelerators
2592 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2593 cuda_deps_any="dlopen LoadLibrary"
2594 cuvid_deps="cuda"
2595 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2596 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32"
2597 dxva2_extralibs="-luser32"
2598 vda_framework_deps="VideoDecodeAcceleration_VDADecoder_h blocks_extension"
2599 vda_framework_extralibs="-framework VideoDecodeAcceleration"
2600 vda_deps="vda_framework pthreads"
2601 vda_extralibs="-framework CoreFoundation -framework QuartzCore"
2602 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2603 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2604 xvmc_deps="X11_extensions_XvMClib_h"
2605
2606 h263_vaapi_hwaccel_deps="vaapi"
2607 h263_vaapi_hwaccel_select="h263_decoder"
2608 h263_videotoolbox_hwaccel_deps="videotoolbox"
2609 h263_videotoolbox_hwaccel_select="h263_decoder"
2610 h264_cuvid_hwaccel_deps="cuda cuvid"
2611 h264_cuvid_hwaccel_select="h264_cuvid_decoder"
2612 h264_d3d11va_hwaccel_deps="d3d11va"
2613 h264_d3d11va_hwaccel_select="h264_decoder"
2614 h264_d3d11va2_hwaccel_deps="d3d11va"
2615 h264_d3d11va2_hwaccel_select="h264_decoder"
2616 h264_dxva2_hwaccel_deps="dxva2"
2617 h264_dxva2_hwaccel_select="h264_decoder"
2618 h264_mediacodec_hwaccel_deps="mediacodec"
2619 h264_mmal_hwaccel_deps="mmal"
2620 h264_qsv_hwaccel_deps="libmfx"
2621 h264_vaapi_hwaccel_deps="vaapi"
2622 h264_vaapi_hwaccel_select="h264_decoder"
2623 h264_vda_hwaccel_deps="vda"
2624 h264_vda_hwaccel_select="h264_decoder"
2625 h264_vda_old_hwaccel_deps="vda"
2626 h264_vda_old_hwaccel_select="h264_decoder"
2627 h264_vdpau_hwaccel_deps="vdpau"
2628 h264_vdpau_hwaccel_select="h264_decoder"
2629 h264_videotoolbox_hwaccel_deps="videotoolbox"
2630 h264_videotoolbox_hwaccel_select="h264_decoder"
2631 hevc_cuvid_hwaccel_deps="cuda cuvid"
2632 hevc_cuvid_hwaccel_select="hevc_cuvid_decoder"
2633 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2634 hevc_d3d11va_hwaccel_select="hevc_decoder"
2635 hevc_mediacodec_hwaccel_deps="mediacodec"
2636 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2637 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2638 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2639 hevc_dxva2_hwaccel_select="hevc_decoder"
2640 hevc_qsv_hwaccel_deps="libmfx"
2641 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2642 hevc_vaapi_hwaccel_select="hevc_decoder"
2643 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2644 hevc_vdpau_hwaccel_select="hevc_decoder"
2645 mjpeg_cuvid_hwaccel_deps="cuda cuvid"
2646 mjpeg_cuvid_hwaccel_select="mjpeg_cuvid_decoder"
2647 mpeg_xvmc_hwaccel_deps="xvmc"
2648 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2649 mpeg1_cuvid_hwaccel_deps="cuda cuvid"
2650 mpeg1_cuvid_hwaccel_select="mpeg1_cuvid_decoder"
2651 mpeg1_vdpau_hwaccel_deps="vdpau"
2652 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2653 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2654 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2655 mpeg1_xvmc_hwaccel_deps="xvmc"
2656 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2657 mpeg2_cuvid_hwaccel_deps="cuda cuvid"
2658 mpeg2_cuvid_hwaccel_select="mpeg2_cuvid_decoder"
2659 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2660 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2661 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2662 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2663 mpeg2_dxva2_hwaccel_deps="dxva2"
2664 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2665 mpeg2_mediacodec_hwaccel_deps="mediacodec"
2666 mpeg2_mmal_hwaccel_deps="mmal"
2667 mpeg2_qsv_hwaccel_deps="libmfx"
2668 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2669 mpeg2_vaapi_hwaccel_deps="vaapi"
2670 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2671 mpeg2_vdpau_hwaccel_deps="vdpau"
2672 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2673 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2674 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2675 mpeg2_xvmc_hwaccel_deps="xvmc"
2676 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2677 mpeg4_cuvid_hwaccel_deps="cuda cuvid"
2678 mpeg4_cuvid_hwaccel_select="mpeg4_cuvid_decoder"
2679 mpeg4_mediacodec_hwaccel_deps="mediacodec"
2680 mpeg4_mmal_hwaccel_deps="mmal"
2681 mpeg4_vaapi_hwaccel_deps="vaapi"
2682 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2683 mpeg4_vdpau_hwaccel_deps="vdpau"
2684 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2685 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2686 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2687 vc1_cuvid_hwaccel_deps="cuda cuvid"
2688 vc1_cuvid_hwaccel_select="vc1_cuvid_decoder"
2689 vc1_d3d11va_hwaccel_deps="d3d11va"
2690 vc1_d3d11va_hwaccel_select="vc1_decoder"
2691 vc1_d3d11va2_hwaccel_deps="d3d11va"
2692 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2693 vc1_dxva2_hwaccel_deps="dxva2"
2694 vc1_dxva2_hwaccel_select="vc1_decoder"
2695 vc1_mmal_hwaccel_deps="mmal"
2696 vc1_qsv_hwaccel_deps="libmfx"
2697 vc1_qsv_hwaccel_select="qsvdec_vc1"
2698 vc1_vaapi_hwaccel_deps="vaapi"
2699 vc1_vaapi_hwaccel_select="vc1_decoder"
2700 vc1_vdpau_hwaccel_deps="vdpau"
2701 vc1_vdpau_hwaccel_select="vc1_decoder"
2702 vp8_cuvid_hwaccel_deps="cuda cuvid"
2703 vp8_cuvid_hwaccel_select="vp8_cuvid_decoder"
2704 vp9_cuvid_hwaccel_deps="cuda cuvid"
2705 vp9_cuvid_hwaccel_select="vp9_cuvid_decoder"
2706 vp8_mediacodec_hwaccel_deps="mediacodec"
2707 vp8_qsv_hwaccel_deps="libmfx"
2708 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2709 vp9_d3d11va_hwaccel_select="vp9_decoder"
2710 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2711 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2712 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2713 vp9_dxva2_hwaccel_select="vp9_decoder"
2714 vp9_mediacodec_hwaccel_deps="mediacodec"
2715 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2716 vp9_vaapi_hwaccel_select="vp9_decoder"
2717 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2718 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2719 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2720 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2721 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2722
2723 # hardware-accelerated codecs
2724 omx_deps="dlopen pthreads"
2725 omx_extralibs='$ldl'
2726 omx_rpi_select="omx"
2727 qsvdec_select="qsv"
2728 qsvenc_select="qsv"
2729 vaapi_encode_deps="vaapi"
2730
2731 hwupload_cuda_filter_deps="cuda"
2732 scale_npp_filter_deps="cuda libnpp"
2733 scale_cuda_filter_deps="cuda_sdk"
2734
2735 nvenc_deps="cuda"
2736 nvenc_deps_any="dlopen LoadLibrary"
2737 nvenc_encoder_deps="nvenc"
2738
2739 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2740 h264_cuvid_decoder_deps="cuda cuvid"
2741 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2742 h264_mediacodec_decoder_deps="mediacodec"
2743 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2744 h264_mmal_decoder_deps="mmal"
2745 h264_nvenc_encoder_deps="nvenc"
2746 h264_omx_encoder_deps="omx"
2747 h264_qsv_decoder_deps="libmfx"
2748 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2749 h264_qsv_encoder_deps="libmfx"
2750 h264_qsv_encoder_select="qsvenc"
2751 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2752 h264_vaapi_encoder_select="vaapi_encode golomb"
2753 h264_vda_decoder_deps="vda"
2754 h264_vda_decoder_select="h264_decoder"
2755 h264_vdpau_decoder_deps="vdpau"
2756 h264_vdpau_decoder_select="h264_decoder"
2757 hevc_cuvid_decoder_deps="cuda cuvid"
2758 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2759 hevc_mediacodec_decoder_deps="mediacodec"
2760 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2761 hevc_nvenc_encoder_deps="nvenc"
2762 hevc_qsv_decoder_deps="libmfx"
2763 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2764 hevc_qsv_encoder_deps="libmfx"
2765 hevc_qsv_encoder_select="hevcparse qsvenc"
2766 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2767 hevc_vaapi_encoder_select="vaapi_encode golomb"
2768 mjpeg_cuvid_decoder_deps="cuda cuvid"
2769 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2770 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2771 mpeg1_cuvid_decoder_deps="cuda cuvid"
2772 mpeg1_vdpau_decoder_deps="vdpau"
2773 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2774 mpeg2_crystalhd_decoder_select="crystalhd"
2775 mpeg2_cuvid_decoder_deps="cuda cuvid"
2776 mpeg2_mmal_decoder_deps="mmal"
2777 mpeg2_mediacodec_decoder_deps="mediacodec"
2778 mpeg2_qsv_decoder_deps="libmfx"
2779 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2780 mpeg2_qsv_encoder_deps="libmfx"
2781 mpeg2_qsv_encoder_select="qsvenc"
2782 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2783 mpeg2_vaapi_encoder_select="vaapi_encode"
2784 mpeg4_crystalhd_decoder_select="crystalhd"
2785 mpeg4_cuvid_decoder_deps="cuda cuvid"
2786 mpeg4_mediacodec_decoder_deps="mediacodec"
2787 mpeg4_mmal_decoder_deps="mmal"
2788 mpeg4_omx_encoder_deps="omx"
2789 mpeg4_vdpau_decoder_deps="vdpau"
2790 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2791 mpeg_vdpau_decoder_deps="vdpau"
2792 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2793 msmpeg4_crystalhd_decoder_select="crystalhd"
2794 nvenc_h264_encoder_select="h264_nvenc_encoder"
2795 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2796 vc1_crystalhd_decoder_select="crystalhd"
2797 vc1_cuvid_decoder_deps="cuda cuvid"
2798 vc1_mmal_decoder_deps="mmal"
2799 vc1_vdpau_decoder_deps="vdpau"
2800 vc1_vdpau_decoder_select="vc1_decoder"
2801 vp8_cuvid_decoder_deps="cuda cuvid"
2802 vp8_mediacodec_decoder_deps="mediacodec"
2803 vp8_qsv_decoder_deps="libmfx"
2804 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2805 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2806 vp8_vaapi_encoder_select="vaapi_encode"
2807 vp9_cuvid_decoder_deps="cuda cuvid"
2808 vp9_mediacodec_decoder_deps="mediacodec"
2809 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2810 vp9_vaapi_encoder_select="vaapi_encode"
2811 wmv3_crystalhd_decoder_select="crystalhd"
2812 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2813
2814 # parsers
2815 h264_parser_select="golomb h264dsp h264parse"
2816 hevc_parser_select="hevcparse"
2817 mpegaudio_parser_select="mpegaudioheader"
2818 mpegvideo_parser_select="mpegvideo"
2819 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2820 vc1_parser_select="vc1dsp"
2821
2822 # bitstream_filters
2823 mjpeg2jpeg_bsf_select="jpegtables"
2824
2825 # external libraries
2826 aac_at_decoder_deps="audiotoolbox"
2827 ac3_at_decoder_deps="audiotoolbox"
2828 ac3_at_decoder_select="ac3_parser"
2829 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2830 alac_at_decoder_deps="audiotoolbox"
2831 amr_nb_at_decoder_deps="audiotoolbox"
2832 avisynth_deps_any="dlopen LoadLibrary"
2833 avisynth_demuxer_deps="avisynth"
2834 avisynth_demuxer_select="riffdec"
2835 eac3_at_decoder_deps="audiotoolbox"
2836 eac3_at_decoder_select="ac3_parser"
2837 gsm_ms_at_decoder_deps="audiotoolbox"
2838 ilbc_at_decoder_deps="audiotoolbox"
2839 mp1_at_decoder_deps="audiotoolbox"
2840 mp2_at_decoder_deps="audiotoolbox"
2841 mp3_at_decoder_deps="audiotoolbox"
2842 mp1_at_decoder_select="mpegaudioheader"
2843 mp2_at_decoder_select="mpegaudioheader"
2844 mp3_at_decoder_select="mpegaudioheader"
2845 pcm_alaw_at_decoder_deps="audiotoolbox"
2846 pcm_mulaw_at_decoder_deps="audiotoolbox"
2847 qdmc_at_decoder_deps="audiotoolbox"
2848 qdm2_at_decoder_deps="audiotoolbox"
2849 aac_at_encoder_deps="audiotoolbox"
2850 aac_at_encoder_select="audio_frame_queue"
2851 alac_at_encoder_deps="audiotoolbox"
2852 alac_at_encoder_select="audio_frame_queue"
2853 ilbc_at_encoder_deps="audiotoolbox"
2854 ilbc_at_encoder_select="audio_frame_queue"
2855 pcm_alaw_at_encoder_deps="audiotoolbox"
2856 pcm_alaw_at_encoder_select="audio_frame_queue"
2857 pcm_mulaw_at_encoder_deps="audiotoolbox"
2858 pcm_mulaw_at_encoder_select="audio_frame_queue"
2859 chromaprint_muxer_deps="chromaprint"
2860 h264_videotoolbox_encoder_deps="videotoolbox_encoder pthreads"
2861 libcelt_decoder_deps="libcelt"
2862 libfdk_aac_decoder_deps="libfdk_aac"
2863 libfdk_aac_encoder_deps="libfdk_aac"
2864 libfdk_aac_encoder_select="audio_frame_queue"
2865 libgme_demuxer_deps="libgme"
2866 libgsm_decoder_deps="libgsm"
2867 libgsm_encoder_deps="libgsm"
2868 libgsm_ms_decoder_deps="libgsm"
2869 libgsm_ms_encoder_deps="libgsm"
2870 libilbc_decoder_deps="libilbc"
2871 libilbc_encoder_deps="libilbc"
2872 libkvazaar_encoder_deps="libkvazaar"
2873 libmodplug_demuxer_deps="libmodplug"
2874 libmp3lame_encoder_deps="libmp3lame"
2875 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2876 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2877 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2878 libopencore_amrnb_encoder_select="audio_frame_queue"
2879 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2880 libopenh264_decoder_deps="libopenh264"
2881 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2882 libopenh264_encoder_deps="libopenh264"
2883 libopenjpeg_decoder_deps="libopenjpeg"
2884 libopenjpeg_encoder_deps="libopenjpeg"
2885 libopenmpt_demuxer_deps="libopenmpt"
2886 libopus_decoder_deps="libopus"
2887 libopus_encoder_deps="libopus"
2888 libopus_encoder_select="audio_frame_queue"
2889 librsvg_decoder_deps="librsvg"
2890 libshine_encoder_deps="libshine"
2891 libshine_encoder_select="audio_frame_queue"
2892 libspeex_decoder_deps="libspeex"
2893 libspeex_encoder_deps="libspeex"
2894 libspeex_encoder_select="audio_frame_queue"
2895 libtheora_encoder_deps="libtheora"
2896 libtwolame_encoder_deps="libtwolame"
2897 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2898 libvorbis_decoder_deps="libvorbis"
2899 libvorbis_encoder_deps="libvorbis"
2900 libvorbis_encoder_select="audio_frame_queue"
2901 libvpx_vp8_decoder_deps="libvpx"
2902 libvpx_vp8_encoder_deps="libvpx"
2903 libvpx_vp9_decoder_deps="libvpx"
2904 libvpx_vp9_encoder_deps="libvpx"
2905 libwavpack_encoder_deps="libwavpack"
2906 libwavpack_encoder_select="audio_frame_queue"
2907 libwebp_encoder_deps="libwebp"
2908 libwebp_anim_encoder_deps="libwebp"
2909 libx262_encoder_deps="libx262"
2910 libx264_encoder_deps="libx264"
2911 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2912 libx264rgb_encoder_select="libx264_encoder"
2913 libx265_encoder_deps="libx265"
2914 libxavs_encoder_deps="libxavs"
2915 libxvid_encoder_deps="libxvid"
2916 libzvbi_teletext_decoder_deps="libzvbi"
2917 videotoolbox_deps="VideoToolbox_VideoToolbox_h"
2918 videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework CoreVideo"
2919 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2920 videotoolbox_encoder_suggest="vda_framework vt_bt2020"
2921 vt_bt2020_deps="kCVImageBufferColorPrimaries_ITU_R_2020"
2922
2923 # demuxers / muxers
2924 ac3_demuxer_select="ac3_parser"
2925 aiff_muxer_select="iso_media"
2926 asf_demuxer_select="riffdec"
2927 asf_o_demuxer_select="riffdec"
2928 asf_muxer_select="riffenc"
2929 asf_stream_muxer_select="asf_muxer"
2930 avi_demuxer_select="iso_media riffdec exif"
2931 avi_muxer_select="riffenc"
2932 caf_demuxer_select="iso_media riffdec"
2933 caf_muxer_select="iso_media"
2934 dash_muxer_select="mp4_muxer"
2935 dirac_demuxer_select="dirac_parser"
2936 dts_demuxer_select="dca_parser"
2937 dtshd_demuxer_select="dca_parser"
2938 dv_demuxer_select="dvprofile"
2939 dv_muxer_select="dvprofile"
2940 dxa_demuxer_select="riffdec"
2941 eac3_demuxer_select="ac3_parser"
2942 f4v_muxer_select="mov_muxer"
2943 fifo_muxer_deps="threads"
2944 flac_demuxer_select="flac_parser"
2945 hds_muxer_select="flv_muxer"
2946 hls_muxer_select="mpegts_muxer"
2947 image2_alias_pix_demuxer_select="image2_demuxer"
2948 image2_brender_pix_demuxer_select="image2_demuxer"
2949 ipod_muxer_select="mov_muxer"
2950 ismv_muxer_select="mov_muxer"
2951 matroska_audio_muxer_select="matroska_muxer"
2952 matroska_demuxer_select="iso_media riffdec"
2953 matroska_demuxer_suggest="bzlib lzo zlib"
2954 matroska_muxer_select="iso_media riffenc"
2955 mmf_muxer_select="riffenc"
2956 mov_demuxer_select="iso_media riffdec"
2957 mov_demuxer_suggest="zlib"
2958 mov_muxer_select="iso_media riffenc rtpenc_chain"
2959 mp3_demuxer_select="mpegaudio_parser"
2960 mp3_muxer_select="mpegaudioheader"
2961 mp4_muxer_select="mov_muxer"
2962 mpegts_demuxer_select="iso_media"
2963 mpegts_muxer_select="adts_muxer latm_muxer"
2964 mpegtsraw_demuxer_select="mpegts_demuxer"
2965 mxf_d10_muxer_select="mxf_muxer"
2966 mxf_opatom_muxer_select="mxf_muxer"
2967 nut_muxer_select="riffenc"
2968 nuv_demuxer_select="riffdec"
2969 oga_muxer_select="ogg_muxer"
2970 ogg_demuxer_select="dirac_parse"
2971 ogv_muxer_select="ogg_muxer"
2972 opus_muxer_select="ogg_muxer"
2973 psp_muxer_select="mov_muxer"
2974 rtp_demuxer_select="sdp_demuxer"
2975 rtp_muxer_select="golomb"
2976 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2977 rtsp_demuxer_select="http_protocol rtpdec"
2978 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2979 sap_demuxer_select="sdp_demuxer"
2980 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2981 sdp_demuxer_select="rtpdec"
2982 smoothstreaming_muxer_select="ismv_muxer"
2983 spdif_muxer_select="aac_parser"
2984 spx_muxer_select="ogg_muxer"
2985 swf_demuxer_suggest="zlib"
2986 tak_demuxer_select="tak_parser"
2987 tg2_muxer_select="mov_muxer"
2988 tgp_muxer_select="mov_muxer"
2989 vobsub_demuxer_select="mpegps_demuxer"
2990 w64_demuxer_select="wav_demuxer"
2991 w64_muxer_select="wav_muxer"
2992 wav_demuxer_select="riffdec"
2993 wav_muxer_select="riffenc"
2994 webm_muxer_select="iso_media riffenc"
2995 webm_dash_manifest_demuxer_select="matroska_demuxer"
2996 wtv_demuxer_select="mpegts_demuxer riffdec"
2997 wtv_muxer_select="mpegts_muxer riffenc"
2998 xmv_demuxer_select="riffdec"
2999 xwma_demuxer_select="riffdec"
3000
3001 # indevs / outdevs
3002 alsa_indev_deps="alsa"
3003 alsa_outdev_deps="alsa"
3004 avfoundation_indev_deps="pthreads"
3005 avfoundation_indev_extralibs="-framework Foundation -framework AVFoundation -framework CoreVideo -framework CoreMedia"
3006 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3007 caca_outdev_deps="libcaca"
3008 decklink_indev_deps="decklink threads"
3009 decklink_indev_extralibs="-lstdc++"
3010 decklink_outdev_deps="decklink threads"
3011 decklink_outdev_extralibs="-lstdc++"
3012 dshow_indev_deps="IBaseFilter"
3013 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3014 dv1394_indev_deps="dv1394"
3015 dv1394_indev_select="dv_demuxer"
3016 fbdev_indev_deps="linux_fb_h"
3017 fbdev_outdev_deps="linux_fb_h"
3018 gdigrab_indev_deps="CreateDIBSection"
3019 gdigrab_indev_extralibs="-lgdi32"
3020 gdigrab_indev_select="bmp_decoder"
3021 iec61883_indev_deps="libiec61883"
3022 jack_indev_deps="jack"
3023 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3024 lavfi_indev_deps="avfilter"
3025 libcdio_indev_deps="libcdio"
3026 libdc1394_indev_deps="libdc1394"
3027 libv4l2_indev_deps="libv4l2"
3028 openal_indev_deps="openal"
3029 opengl_outdev_deps="opengl"
3030 oss_indev_deps_any="soundcard_h sys_soundcard_h"
3031 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
3032 pulse_indev_deps="libpulse"
3033 pulse_outdev_deps="libpulse"
3034 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
3035 qtkit_indev_select="qtkit"
3036 sdl2_outdev_deps="sdl2"
3037 sndio_indev_deps="sndio"
3038 sndio_outdev_deps="sndio"
3039 v4l_indev_deps="linux_videodev_h"
3040 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3041 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3042 vfwcap_indev_deps="vfw32 vfwcap_defines"
3043 xcbgrab_indev_deps="libxcb"
3044 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3045 xv_outdev_extralibs="-lXv -lX11 -lXext"
3046
3047 # protocols
3048 async_protocol_deps="threads"
3049 bluray_protocol_deps="libbluray"
3050 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
3051 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3052 ffrtmpcrypt_protocol_select="tcp_protocol"
3053 ffrtmphttp_protocol_deps="!librtmp_protocol"
3054 ffrtmphttp_protocol_select="http_protocol"
3055 ftp_protocol_select="tcp_protocol"
3056 gopher_protocol_select="network"
3057 http_protocol_select="tcp_protocol"
3058 httpproxy_protocol_select="tcp_protocol"
3059 https_protocol_select="tls_protocol"
3060 icecast_protocol_select="http_protocol"
3061 librtmp_protocol_deps="librtmp"
3062 librtmpe_protocol_deps="librtmp"
3063 librtmps_protocol_deps="librtmp"
3064 librtmpt_protocol_deps="librtmp"
3065 librtmpte_protocol_deps="librtmp"
3066 libsmbclient_protocol_deps="libsmbclient gplv3"
3067 libssh_protocol_deps="libssh"
3068 mmsh_protocol_select="http_protocol"
3069 mmst_protocol_select="network"
3070 rtmp_protocol_deps="!librtmp_protocol"
3071 rtmp_protocol_select="tcp_protocol"
3072 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3073 rtmps_protocol_deps="!librtmp_protocol"
3074 rtmps_protocol_select="tls_protocol"
3075 rtmpt_protocol_select="ffrtmphttp_protocol"
3076 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3077 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3078 rtp_protocol_select="udp_protocol"
3079 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3080 sctp_protocol_select="network"
3081 srtp_protocol_select="rtp_protocol srtp"
3082 tcp_protocol_select="network"
3083 tls_gnutls_protocol_deps="gnutls !tls_schannel_protocol !tls_securetransport_protocol"
3084 tls_gnutls_protocol_select="tcp_protocol"
3085 tls_openssl_protocol_deps="openssl !tls_schannel_protocol !tls_securetransport_protocol !tls_gnutls_protocol"
3086 tls_openssl_protocol_select="tcp_protocol"
3087 tls_schannel_protocol_deps="schannel"
3088 tls_schannel_protocol_select="tcp_protocol"
3089 tls_securetransport_protocol_deps="securetransport"
3090 tls_securetransport_protocol_select="tcp_protocol"
3091 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
3092 udp_protocol_select="network"
3093 udplite_protocol_select="network"
3094 unix_protocol_deps="sys_un_h"
3095 unix_protocol_select="network"
3096
3097 # filters
3098 afftfilt_filter_deps="avcodec"
3099 afftfilt_filter_select="fft"
3100 afir_filter_deps="avcodec"
3101 afir_filter_select="fft"
3102 amovie_filter_deps="avcodec avformat"
3103 aresample_filter_deps="swresample"
3104 ass_filter_deps="libass"
3105 atempo_filter_deps="avcodec"
3106 atempo_filter_select="rdft"
3107 azmq_filter_deps="libzmq"
3108 blackframe_filter_deps="gpl"
3109 boxblur_filter_deps="gpl"
3110 bs2b_filter_deps="libbs2b"
3111 colormatrix_filter_deps="gpl"
3112 cover_rect_filter_deps="avcodec avformat gpl"
3113 cropdetect_filter_deps="gpl"
3114 deinterlace_qsv_filter_deps="libmfx"
3115 deinterlace_vaapi_filter_deps="vaapi"
3116 delogo_filter_deps="gpl"
3117 deshake_filter_select="pixelutils"
3118 drawtext_filter_deps="libfreetype"
3119 elbg_filter_deps="avcodec"
3120 eq_filter_deps="gpl"
3121 fftfilt_filter_deps="avcodec"
3122 fftfilt_filter_select="rdft"
3123 find_rect_filter_deps="avcodec avformat gpl"
3124 firequalizer_filter_deps="avcodec"
3125 firequalizer_filter_select="rdft"
3126 flite_filter_deps="libflite"
3127 framerate_filter_select="pixelutils"
3128 frei0r_filter_deps="frei0r dlopen"
3129 frei0r_src_filter_deps="frei0r dlopen"
3130 fspp_filter_deps="gpl"
3131 geq_filter_deps="gpl"
3132 histeq_filter_deps="gpl"
3133 hqdn3d_filter_deps="gpl"
3134 interlace_filter_deps="gpl"
3135 kerndeint_filter_deps="gpl"
3136 ladspa_filter_deps="ladspa dlopen"
3137 mcdeint_filter_deps="avcodec gpl"
3138 movie_filter_deps="avcodec avformat"
3139 mpdecimate_filter_deps="gpl"
3140 mpdecimate_filter_select="pixelutils"
3141 mptestsrc_filter_deps="gpl"
3142 negate_filter_deps="lut_filter"
3143 nnedi_filter_deps="gpl"
3144 ocr_filter_deps="libtesseract"
3145 ocv_filter_deps="libopencv"
3146 owdenoise_filter_deps="gpl"
3147 pan_filter_deps="swresample"
3148 perspective_filter_deps="gpl"
3149 phase_filter_deps="gpl"
3150 pp7_filter_deps="gpl"
3151 pp_filter_deps="gpl postproc"
3152 pullup_filter_deps="gpl"
3153 removelogo_filter_deps="avcodec avformat swscale"
3154 repeatfields_filter_deps="gpl"
3155 resample_filter_deps="avresample"
3156 rubberband_filter_deps="librubberband"
3157 sab_filter_deps="gpl swscale"
3158 scale2ref_filter_deps="swscale"
3159 scale_filter_deps="swscale"
3160 scale_qsv_filter_deps="libmfx"
3161 select_filter_select="pixelutils"
3162 showcqt_filter_deps="avcodec avformat swscale"
3163 showcqt_filter_select="fft"
3164 showfreqs_filter_deps="avcodec"
3165 showfreqs_filter_select="fft"
3166 showspectrum_filter_deps="avcodec"
3167 showspectrum_filter_select="fft"
3168 showspectrumpic_filter_deps="avcodec"
3169 showspectrumpic_filter_select="fft"
3170 signature_filter_deps="gpl avcodec avformat"
3171 smartblur_filter_deps="gpl swscale"
3172 sofalizer_filter_deps="libmysofa avcodec"
3173 sofalizer_filter_select="fft"
3174 spectrumsynth_filter_deps="avcodec"
3175 spectrumsynth_filter_select="fft"
3176 spp_filter_deps="gpl avcodec"
3177 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3178 stereo3d_filter_deps="gpl"
3179 subtitles_filter_deps="avformat avcodec libass"
3180 super2xsai_filter_deps="gpl"
3181 pixfmts_super2xsai_test_deps="super2xsai_filter"
3182 tinterlace_filter_deps="gpl"
3183 tinterlace_merge_test_deps="tinterlace_filter"
3184 tinterlace_pad_test_deps="tinterlace_filter"
3185 uspp_filter_deps="gpl avcodec"
3186 vaguedenoiser_filter_deps="gpl"
3187 vidstabdetect_filter_deps="libvidstab"
3188 vidstabtransform_filter_deps="libvidstab"
3189 zmq_filter_deps="libzmq"
3190 zoompan_filter_deps="swscale"
3191 zscale_filter_deps="libzimg"
3192 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3193
3194 # examples
3195 avio_dir_cmd_deps="avformat avutil"
3196 avio_reading_deps="avformat avcodec avutil"
3197 decode_audio_example_deps="avcodec avutil"
3198 decode_video_example_deps="avcodec avutil"
3199 demuxing_decoding_example_deps="avcodec avformat avutil"
3200 encode_audio_example_deps="avcodec avutil"
3201 encode_video_example_deps="avcodec avutil"
3202 extract_mvs_example_deps="avcodec avformat avutil"
3203 filter_audio_example_deps="avfilter avutil"
3204 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3205 filtering_video_example_deps="avfilter avcodec avformat avutil"
3206 http_multiclient_example_deps="avformat avutil fork"
3207 metadata_example_deps="avformat avutil"
3208 muxing_example_deps="avcodec avformat avutil swscale"
3209 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3210 remuxing_example_deps="avcodec avformat avutil"
3211 resampling_audio_example_deps="avutil swresample"
3212 scaling_video_example_deps="avutil swscale"
3213 transcode_aac_example_deps="avcodec avformat swresample"
3214 transcoding_example_deps="avfilter avcodec avformat avutil"
3215
3216 # libraries, in linking order
3217 avcodec_deps="avutil"
3218 avcodec_select="null_bsf"
3219 avdevice_deps="avformat avcodec avutil"
3220 avfilter_deps="avutil"
3221 avformat_deps="avcodec avutil"
3222 avresample_deps="avutil"
3223 postproc_deps="avutil gpl"
3224 swresample_deps="avutil"
3225 swscale_deps="avutil"
3226
3227 # programs
3228 ffmpeg_deps="avcodec avfilter avformat swresample"
3229 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3230                null_filter
3231                trim_filter"
3232 ffplay_deps="avcodec avformat swscale swresample sdl2"
3233 ffplay_extralibs='$sdl2_extralibs'
3234 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3235 ffprobe_deps="avcodec avformat"
3236 ffserver_deps="avformat fork sarestart"
3237 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3238
3239 # documentation
3240 podpages_deps="perl"
3241 manpages_deps="perl pod2man"
3242 htmlpages_deps="perl"
3243 htmlpages_deps_any="makeinfo_html texi2html"
3244 txtpages_deps="perl makeinfo"
3245 doc_deps_any="manpages htmlpages podpages txtpages"
3246
3247 # default parameters
3248
3249 logfile="ffbuild/config.log"
3250
3251 # installation paths
3252 prefix_default="/usr/local"
3253 bindir_default='${prefix}/bin'
3254 datadir_default='${prefix}/share/ffmpeg'
3255 docdir_default='${prefix}/share/doc/ffmpeg'
3256 incdir_default='${prefix}/include'
3257 libdir_default='${prefix}/lib'
3258 mandir_default='${prefix}/share/man'
3259
3260 # toolchain
3261 ar_default="ar"
3262 cc_default="gcc"
3263 cxx_default="g++"
3264 host_cc_default="gcc"
3265 doxygen_default="doxygen"
3266 install="install"
3267 ln_s_default="ln -s -f"
3268 nm_default="nm -g"
3269 pkg_config_default=pkg-config
3270 ranlib_default="ranlib"
3271 strip_default="strip"
3272 version_script='--version-script'
3273 x86asmexe_default="nasm"
3274 windres_default="windres"
3275 nvcc_default="nvcc"
3276 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3277
3278 # OS
3279 target_os_default=$(tolower $(uname -s))
3280 host_os=$target_os_default
3281
3282 # machine
3283 if test "$target_os_default" = aix; then
3284     arch_default=$(uname -p)
3285     strip_default="strip -X32_64"
3286 else
3287     arch_default=$(uname -m)
3288 fi
3289 cpu="generic"
3290 intrinsics="none"
3291
3292 # configurable options
3293 enable $PROGRAM_LIST
3294 enable $DOCUMENT_LIST
3295 enable $EXAMPLE_LIST
3296 enable $(filter_out avresample $LIBRARY_LIST)
3297 enable stripping
3298
3299 enable asm
3300 enable debug
3301 enable doc
3302 enable faan faandct faanidct
3303 enable optimizations
3304 enable runtime_cpudetect
3305 enable safe_bitstream_reader
3306 enable static
3307 enable swscale_alpha
3308 enable valgrind_backtrace
3309
3310 sws_max_filter_size_default=256
3311 set_default sws_max_filter_size
3312
3313 # build settings
3314 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3315 LIBPREF="lib"
3316 LIBSUF=".a"
3317 FULLNAME='$(NAME)$(BUILDSUF)'
3318 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3319 SLIBPREF="lib"
3320 SLIBSUF=".so"
3321 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3322 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3323 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3324 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3325 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3326 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3327 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3328
3329 asflags_filter=echo
3330 cflags_filter=echo
3331 ldflags_filter=echo
3332
3333 AS_C='-c'
3334 AS_O='-o $@'
3335 CC_C='-c'
3336 CC_E='-E -o $@'
3337 CC_O='-o $@'
3338 CXX_C='-c'
3339 CXX_O='-o $@'
3340 OBJCC_C='-c'
3341 OBJCC_E='-E -o $@'
3342 OBJCC_O='-o $@'
3343 X86ASM_O='-o $@'
3344 LD_O='-o $@'
3345 LD_LIB='-l%'
3346 LD_PATH='-L'
3347 HOSTCC_C='-c'
3348 HOSTCC_E='-E -o $@'
3349 HOSTCC_O='-o $@'
3350 HOSTLD_O='-o $@'
3351 NVCC_C='-c'
3352 NVCC_O='-o $@'
3353
3354 host_extralibs='-lm'
3355 host_cflags_filter=echo
3356 host_ldflags_filter=echo
3357
3358 target_path='$(CURDIR)'
3359
3360 # since the object filename is not given with the -MM flag, the compiler
3361 # is only able to print the basename, and we must add the path ourselves
3362 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3363 DEPFLAGS='-MM'
3364
3365 mkdir -p ffbuild
3366
3367 # find source path
3368 if test -f configure; then
3369     source_path=.
3370 else
3371     source_path=$(cd $(dirname "$0"); pwd)
3372     case "$source_path" in
3373         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3374     esac
3375     test -e "$source_path/config.h" &&
3376         die "Out of tree builds are impossible with config.h in source dir."
3377 fi
3378
3379 for v in "$@"; do
3380     r=${v#*=}
3381     l=${v%"$r"}
3382     r=$(sh_quote "$r")
3383     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3384 done
3385
3386 find_things(){
3387     thing=$1
3388     pattern=$2
3389     file=$source_path/$3
3390     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3391 }
3392
3393 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3394 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3395 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3396 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3397 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3398 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3399 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3400 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3401 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3402
3403 find_things_extern(){
3404     thing=$1
3405     pattern=$2
3406     file=$source_path/$3
3407     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3408 }
3409
3410 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3411 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3412
3413 ALL_COMPONENTS="
3414     $BSF_LIST
3415     $DECODER_LIST
3416     $DEMUXER_LIST
3417     $ENCODER_LIST
3418     $FILTER_LIST
3419     $HWACCEL_LIST
3420     $INDEV_LIST
3421     $MUXER_LIST
3422     $OUTDEV_LIST
3423     $PARSER_LIST
3424     $PROTOCOL_LIST
3425 "
3426
3427 for n in $COMPONENT_LIST; do
3428     v=$(toupper ${n%s})_LIST
3429     eval enable \$$v
3430     eval ${n}_if_any="\$$v"
3431 done
3432
3433 enable $ARCH_EXT_LIST
3434
3435 die_unknown(){
3436     echo "Unknown option \"$1\"."
3437     echo "See $0 --help for available options."
3438     exit 1
3439 }
3440
3441 print_in_columns() {
3442     cols=$(expr $ncols / 24)
3443     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3444 }
3445
3446 show_list() {
3447     suffix=_$1
3448     shift
3449     echo $* | sed s/$suffix//g | print_in_columns
3450     exit 0
3451 }
3452
3453 rand_list(){
3454     IFS=', '
3455     set -- $*
3456     unset IFS
3457     for thing; do
3458         comp=${thing%:*}
3459         prob=${thing#$comp}
3460         prob=${prob#:}
3461         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3462         echo "prob ${prob:-0.5}"
3463         printf '%s\n' $comp
3464     done
3465 }
3466
3467 do_random(){
3468     action=$1
3469     shift
3470     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3471     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3472 }
3473
3474 for opt do
3475     optval="${opt#*=}"
3476     case "$opt" in
3477         --extra-ldflags=*)
3478             add_ldflags $optval
3479         ;;
3480         --extra-ldexeflags=*)
3481             add_ldexeflags $optval
3482         ;;
3483         --extra-ldlibflags=*)
3484             add_ldlibflags $optval
3485         ;;
3486         --extra-libs=*)
3487             add_extralibs $optval
3488         ;;
3489         --disable-devices)
3490             disable $INDEV_LIST $OUTDEV_LIST
3491         ;;
3492         --enable-debug=*)
3493             debuglevel="$optval"
3494         ;;
3495         --disable-programs)
3496             disable $PROGRAM_LIST
3497         ;;
3498         --disable-everything)
3499             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3500         ;;
3501         --disable-all)
3502             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3503             disable $LIBRARY_LIST $PROGRAM_LIST doc
3504             enable avutil
3505         ;;
3506         --enable-random|--disable-random)
3507             action=${opt%%-random}
3508             do_random ${action#--} $COMPONENT_LIST
3509         ;;
3510         --enable-random=*|--disable-random=*)
3511             action=${opt%%-random=*}
3512             do_random ${action#--} $optval
3513         ;;
3514         --enable-*=*|--disable-*=*)
3515             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3516             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3517             eval list=\$$(toupper $thing)_LIST
3518             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3519             list=$(filter "$name" $list)
3520             [ "$list" = "" ] && warn "Option $opt did not match anything"
3521             $action $list
3522         ;;
3523         --enable-yasm|--disable-yasm)
3524             warn "The ${opt} option is only provided for compatibility and will be\n"\
3525                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3526             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3527         ;;
3528         --yasmexe=*)
3529             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3530                  "removed in the future. Use --x86asmexe instead."
3531             x86asmexe="$optval"
3532         ;;
3533         --enable-?*|--disable-?*)
3534             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3535             if is_in $option $COMPONENT_LIST; then
3536                 test $action = disable && action=unset
3537                 eval $action \$$(toupper ${option%s})_LIST
3538             elif is_in $option $CMDLINE_SELECT; then
3539                 $action $option
3540             else
3541                 die_unknown $opt
3542             fi
3543         ;;
3544         --list-*)
3545             NAME="${opt#--list-}"
3546             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3547             NAME=${NAME%s}
3548             eval show_list $NAME \$$(toupper $NAME)_LIST
3549         ;;
3550         --help|-h) show_help
3551         ;;
3552         --quiet|-q) quiet=yes
3553         ;;
3554         --fatal-warnings) enable fatal_warnings
3555         ;;
3556         --libfuzzer=*)
3557             libfuzzer_path="$optval"
3558         ;;
3559         *)
3560             optname="${opt%%=*}"
3561             optname="${optname#--}"
3562             optname=$(echo "$optname" | sed 's/-/_/g')
3563             if is_in $optname $CMDLINE_SET; then
3564                 eval $optname='$optval'
3565             elif is_in $optname $CMDLINE_APPEND; then
3566                 append $optname "$optval"
3567             else
3568                 die_unknown $opt
3569             fi
3570         ;;
3571     esac
3572 done
3573
3574 for e in $env; do
3575     eval "export $e"
3576 done
3577
3578 # Mark specifically enabled, but normally autodetected libraries as requested.
3579 for lib in $AUTODETECT_LIBS; do
3580     enabled $lib && request $lib
3581 done
3582
3583 # Enable platform codecs by default.
3584 enable_weak audiotoolbox
3585
3586 # Enable hwaccels by default.
3587 enable_weak d3d11va dxva2 vaapi vda vdpau videotoolbox_hwaccel xvmc
3588 enable_weak xlib
3589
3590 enable_weak cuda cuvid nvenc vda_framework videotoolbox videotoolbox_encoder
3591
3592 disabled logging && logfile=/dev/null
3593
3594 die_license_disabled() {
3595     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3596 }
3597
3598 die_license_disabled_gpl() {
3599     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3600 }
3601
3602 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3603 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3604
3605 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3606 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3607
3608 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3609
3610 # Disable all the library-specific components if the library itself
3611 # is disabled, see AVCODEC_LIST and following _LIST variables.
3612
3613 disable_components(){
3614     disabled ${1} && disable $(
3615         eval components="\$$(toupper ${1})_COMPONENTS"
3616         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3617     )
3618 }
3619
3620 map 'disable_components $v' $LIBRARY_LIST
3621
3622 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3623 set >> $logfile
3624
3625 test -n "$valgrind" && toolchain="valgrind-memcheck"
3626
3627 enabled ossfuzz && {
3628     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
3629     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
3630 }
3631
3632 case "$toolchain" in
3633     *-asan)
3634         cc_default="${toolchain%-asan}"
3635         add_cflags  -fsanitize=address
3636         add_ldflags -fsanitize=address
3637     ;;
3638     *-msan)
3639         cc_default="${toolchain%-msan}"
3640         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3641         add_ldflags -fsanitize=memory
3642     ;;
3643     *-tsan)
3644         cc_default="${toolchain%-tsan}"
3645         add_cflags  -fsanitize=thread -fPIE
3646         add_ldflags -fsanitize=thread -pie
3647         case "$toolchain" in
3648             gcc-tsan)
3649                 add_cflags  -fPIC
3650                 add_ldflags -fPIC
3651                 ;;
3652         esac
3653     ;;
3654     *-usan)
3655         cc_default="${toolchain%-usan}"
3656         add_cflags  -fsanitize=undefined
3657         add_ldflags -fsanitize=undefined
3658     ;;
3659     valgrind-*)
3660         target_exec_default="valgrind"
3661         case "$toolchain" in
3662             valgrind-massif)
3663                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3664                 ;;
3665             valgrind-memcheck)
3666                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3667                 ;;
3668         esac
3669     ;;
3670     msvc)
3671         # Check whether the current MSVC version needs the C99 converter.
3672         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3673         # support enough of C99 to build ffmpeg. Default to the new
3674         # behaviour if the regexp was unable to match anything, since this
3675         # successfully parses the version number of existing supported
3676         # versions that require the converter (MSVC 2010 and 2012).
3677         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3678         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3679             cc_default="cl"
3680             cxx_default="cl"
3681         else
3682             cc_default="c99wrap cl"
3683             cxx_default="c99wrap cl"
3684         fi
3685         ld_default="$source_path/compat/windows/mslink"
3686         nm_default="dumpbin -symbols"
3687         ar_default="lib"
3688         case "$arch" in
3689         arm*)
3690             as_default="armasm"
3691             ;;
3692         esac
3693         target_os_default="win32"
3694         # Use a relative path for TMPDIR. This makes sure all the
3695         # ffconf temp files are written with a relative path, avoiding
3696         # issues with msys/win32 path conversion for MSVC parameters
3697         # such as -Fo<file> or -out:<file>.
3698         TMPDIR=.
3699     ;;
3700     icl)
3701         cc_default="icl"
3702         ld_default="xilink"
3703         nm_default="dumpbin -symbols"
3704         ar_default="xilib"
3705         target_os_default="win32"
3706         TMPDIR=.
3707     ;;
3708     gcov)
3709         add_cflags  -fprofile-arcs -ftest-coverage
3710         add_ldflags -fprofile-arcs -ftest-coverage
3711     ;;
3712     llvm-cov)
3713         add_cflags -fprofile-arcs -ftest-coverage
3714         add_ldflags --coverage
3715     ;;
3716     hardened)
3717         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3718         add_cflags   -fno-strict-overflow -fstack-protector-all
3719         add_ldflags  -Wl,-z,relro -Wl,-z,now
3720         add_cflags   -fPIE
3721         add_ldexeflags -fPIE -pie
3722     ;;
3723     ?*)
3724         die "Unknown toolchain $toolchain"
3725     ;;
3726 esac
3727
3728 test -n "$cross_prefix" && enable cross_compile
3729
3730 if enabled cross_compile; then
3731     test -n "$arch" && test -n "$target_os" ||
3732         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3733 fi
3734
3735 ar_default="${cross_prefix}${ar_default}"
3736 cc_default="${cross_prefix}${cc_default}"
3737 cxx_default="${cross_prefix}${cxx_default}"
3738 nm_default="${cross_prefix}${nm_default}"
3739 pkg_config_default="${cross_prefix}${pkg_config_default}"
3740 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3741     ranlib_default="${cross_prefix}${ranlib_default} -D"
3742 else
3743     ranlib_default="${cross_prefix}${ranlib_default}"
3744 fi
3745 strip_default="${cross_prefix}${strip_default}"
3746 windres_default="${cross_prefix}${windres_default}"
3747
3748 sysinclude_default="${sysroot}/usr/include"
3749
3750 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3751     target_exec target_os x86asmexe nvcc
3752 enabled cross_compile || host_cc_default=$cc
3753 set_default host_cc
3754
3755 pkg_config_fail_message=""
3756 if ! $pkg_config --version >/dev/null 2>&1; then
3757     warn "$pkg_config not found, library detection may fail."
3758     pkg_config=false
3759 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3760     pkg_config_fail_message="
3761 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3762 fi
3763
3764 if test $doxygen != $doxygen_default && \
3765   ! $doxygen --version >/dev/null 2>&1; then
3766     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3767 fi
3768
3769 exesuf() {
3770     case $1 in
3771         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3772     esac
3773 }
3774
3775 EXESUF=$(exesuf $target_os)
3776 HOSTEXESUF=$(exesuf $host_os)
3777
3778 # set temporary file name
3779 : ${TMPDIR:=$TEMPDIR}
3780 : ${TMPDIR:=$TMP}
3781 : ${TMPDIR:=/tmp}
3782
3783 if [ -n "$tempprefix" ] ; then
3784     mktemp(){
3785         tmpname="$tempprefix.${HOSTNAME}.${UID}"
3786         echo "$tmpname"
3787         mkdir "$tmpname"
3788     }
3789 elif ! check_cmd mktemp -u XXXXXX; then
3790     # simple replacement for missing mktemp
3791     # NOT SAFE FOR GENERAL USE
3792     mktemp(){
3793         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3794         echo "$tmpname"
3795         mkdir "$tmpname"
3796     }
3797 fi
3798
3799 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
3800     die "Unable to create temporary directory in $TMPDIR."
3801
3802 tmpfile(){
3803     tmp="${FFTMPDIR}/test"$2
3804     (set -C; exec > $tmp) 2> /dev/null ||
3805         die "Unable to create temporary file in $FFTMPDIR."
3806     eval $1=$tmp
3807 }
3808
3809 trap 'rm -rf -- "$FFTMPDIR"' EXIT
3810 trap 'exit 2' INT
3811
3812 tmpfile TMPASM .asm
3813 tmpfile TMPC   .c
3814 tmpfile TMPCPP .cpp
3815 tmpfile TMPE   $EXESUF
3816 tmpfile TMPH   .h
3817 tmpfile TMPM   .m
3818 tmpfile TMPO   .o
3819 tmpfile TMPS   .S
3820 tmpfile TMPSH  .sh
3821 tmpfile TMPV   .ver
3822
3823 unset -f mktemp
3824
3825 chmod +x $TMPE
3826
3827 # make sure we can execute files in $TMPDIR
3828 cat > $TMPSH 2>> $logfile <<EOF
3829 #! /bin/sh
3830 EOF
3831 chmod +x $TMPSH >> $logfile 2>&1
3832 if ! $TMPSH >> $logfile 2>&1; then
3833     cat <<EOF
3834 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3835 variable to another directory and make sure that it is not mounted noexec.
3836 EOF
3837     die "Sanity test failed."
3838 fi
3839
3840 armasm_flags(){
3841     for flag; do
3842         case $flag in
3843             # Filter out MSVC cl.exe options from cflags that shouldn't
3844             # be passed to gas-preprocessor
3845             -M[TD]*)                                            ;;
3846             *)                  echo $flag                      ;;
3847         esac
3848    done
3849 }
3850
3851 ccc_flags(){
3852     for flag; do
3853         case $flag in
3854             -std=c99)           echo -c99                       ;;
3855             -mcpu=*)            echo -arch ${flag#*=}           ;;
3856             -mieee)             echo -ieee                      ;;
3857             -O*|-fast)          echo $flag                      ;;
3858             -fno-math-errno)    echo -assume nomath_errno       ;;
3859             -g)                 echo -g3                        ;;
3860             -Wall)              echo -msg_enable level2         ;;
3861             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3862             -Wl,*)              echo $flag                      ;;
3863             -f*|-W*)                                            ;;
3864             *)                  echo $flag                      ;;
3865         esac
3866    done
3867 }
3868
3869 cparser_flags(){
3870     for flag; do
3871         case $flag in
3872             -Wno-switch)             echo -Wno-switch-enum ;;
3873             -Wno-format-zero-length) ;;
3874             -Wdisabled-optimization) ;;
3875             -Wno-pointer-sign)       echo -Wno-other ;;
3876             *)                       echo $flag ;;
3877         esac
3878     done
3879 }
3880
3881 msvc_common_flags(){
3882     for flag; do
3883         case $flag in
3884             # In addition to specifying certain flags under the compiler
3885             # specific filters, they must be specified here as well or else the
3886             # generic catch all at the bottom will print the original flag.
3887             -Wall)                ;;
3888             -Wextra)              ;;
3889             -std=c99)             ;;
3890             # Common flags
3891             -fomit-frame-pointer) ;;
3892             -g)                   echo -Z7 ;;
3893             -fno-math-errno)      ;;
3894             -fno-common)          ;;
3895             -fno-signed-zeros)    ;;
3896             -fPIC)                ;;
3897             -mthumb)              ;;
3898             -march=*)             ;;
3899             -lz)                  echo zlib.lib ;;
3900             -lx264)               echo libx264.lib ;;
3901             -lstdc++)             ;;
3902             -l*)                  echo ${flag#-l}.lib ;;
3903             -LARGEADDRESSAWARE)   echo $flag ;;
3904             -L*)                  echo -libpath:${flag#-L} ;;
3905             *)                    echo $flag ;;
3906         esac
3907     done
3908 }
3909
3910 msvc_flags(){
3911     msvc_common_flags "$@"
3912     for flag; do
3913         case $flag in
3914             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
3915                                        -wd4554 ;;
3916             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3917                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3918                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3919                                        -wd4307 \
3920                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
3921         esac
3922     done
3923 }
3924
3925 icl_flags(){
3926     msvc_common_flags "$@"
3927     for flag; do
3928         case $flag in
3929             # Despite what Intel's documentation says -Wall, which is supported
3930             # on Windows, does enable remarks so disable them here.
3931             -Wall)                echo $flag -Qdiag-disable:remark ;;
3932             -std=c99)             echo -Qstd=c99 ;;
3933             -flto)                echo -ipo ;;
3934         esac
3935     done
3936 }
3937
3938 icc_flags(){
3939     for flag; do
3940         case $flag in
3941             -flto)                echo -ipo ;;
3942             *)                    echo $flag ;;
3943         esac
3944     done
3945 }
3946
3947 pgi_flags(){
3948     for flag; do
3949         case $flag in
3950             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3951             -fomit-frame-pointer) echo -Mnoframe ;;
3952             -g)                   echo -gopt ;;
3953             *)                    echo $flag ;;
3954         esac
3955     done
3956 }
3957
3958 suncc_flags(){
3959     for flag; do
3960         case $flag in
3961             -march=*|-mcpu=*)
3962                 case "${flag#*=}" in
3963                     native)                   echo -xtarget=native       ;;
3964                     v9|niagara)               echo -xarch=sparc          ;;
3965                     ultrasparc)               echo -xarch=sparcvis       ;;
3966                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3967                     i586|pentium)             echo -xchip=pentium        ;;
3968                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3969                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3970                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3971                     pentium4*)          echo -xtarget=pentium4           ;;
3972                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3973                     *-sse3)             echo -xarch=sse3                 ;;
3974                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3975                     bonnell)                   echo -xarch=ssse3         ;;
3976                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3977                     westmere)                  echo -xtarget=westmere    ;;
3978                     silvermont)                echo -xarch=sse4_2        ;;
3979                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3980                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
3981                                                echo -xarch=avx           ;;
3982                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3983                     btver1)                    echo -xarch=amdsse4a      ;;
3984                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
3985                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3986                     k8|opteron|athlon64|athlon-fx)
3987                                                echo -xarch=sse2a         ;;
3988                     athlon*)                   echo -xarch=pentium_proa  ;;
3989                 esac
3990                 ;;
3991             -std=c99)             echo -xc99              ;;
3992             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3993             -fPIC)                echo -KPIC -xcode=pic32 ;;
3994             -W*,*)                echo $flag              ;;
3995             -f*-*|-W*|-mimpure-text)                      ;;
3996             -shared)              echo -G                 ;;
3997             *)                    echo $flag              ;;
3998         esac
3999     done
4000 }
4001
4002 tms470_flags(){
4003     for flag; do
4004         case $flag in
4005             -march=*|-mcpu=*)
4006                 case "${flag#*=}" in
4007                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
4008                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
4009                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
4010                     armv6*|arm11*)          echo -mv=6   ;;
4011                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
4012                                             echo -mv=5e  ;;
4013                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
4014                 esac
4015                 ;;
4016             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
4017             -mfpu=vfp)      echo --float_support=vfpv2        ;;
4018             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
4019             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
4020             -msoft-float)   echo --float_support=vfplib       ;;
4021             -O[0-3]|-mf=*)  echo $flag                        ;;
4022             -g)             echo -g -mn                       ;;
4023             -pds=*)         echo $flag                        ;;
4024             -D*|-I*)        echo $flag                        ;;
4025             --gcc|--abi=*)  echo $flag                        ;;
4026             -me)            echo $flag                        ;;
4027         esac
4028     done
4029 }
4030
4031 probe_cc(){
4032     pfx=$1
4033     _cc=$2
4034     first=$3
4035
4036     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4037     unset _ld_o _ldflags _ld_lib _ld_path
4038     unset _depflags _DEPCMD _DEPFLAGS
4039     _flags_filter=echo
4040
4041     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4042         true # no-op to avoid reading stdin in following checks
4043     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4044         _type=llvm_gcc
4045         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4046         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4047         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4048         _cflags_speed='-O3'
4049         _cflags_size='-Os'
4050     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4051         _type=gcc
4052         gcc_version=$($_cc --version | head -n1)
4053         gcc_basever=$($_cc -dumpversion)
4054         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4055         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4056         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4057         case $gcc_basever in
4058             2) ;;
4059             2.*) ;;
4060             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4061         esac
4062         if [ "$first" = true ]; then
4063             case $gcc_basever in
4064                 4.2*)
4065                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4066             esac
4067         fi
4068         _cflags_speed='-O3'
4069         _cflags_size='-Os'
4070     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4071         _type=icc
4072         _ident=$($_cc --version | head -n1)
4073         _depflags='-MMD'
4074         _cflags_speed='-O3'
4075         _cflags_size='-Os'
4076         _cflags_noopt='-O1'
4077         _flags_filter=icc_flags
4078     elif $_cc -v 2>&1 | grep -q xlc; then
4079         _type=xlc
4080         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4081         _cflags_speed='-O5'
4082         _cflags_size='-O5 -qcompact'
4083     elif $_cc -V 2>/dev/null | grep -q Compaq; then
4084         _type=ccc
4085         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
4086         _DEPFLAGS='-M'
4087         _cflags_speed='-fast'
4088         _cflags_size='-O1'
4089         _flags_filter=ccc_flags
4090     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4091         test -d "$sysroot" || die "No valid sysroot specified."
4092         _type=armcc
4093         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4094         armcc_conf="$PWD/armcc.conf"
4095         $_cc --arm_linux_configure                 \
4096              --arm_linux_config_file="$armcc_conf" \
4097              --configure_sysroot="$sysroot"        \
4098              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4099              die "Error creating armcc configuration file."
4100         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4101         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4102         as_default="${cross_prefix}gcc"
4103         _depflags='-MMD'
4104         _cflags_speed='-O3'
4105         _cflags_size='-Os'
4106     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
4107         _type=tms470
4108         _ident=$($_cc -version | head -n1 | tr -s ' ')
4109         _flags='--gcc --abi=eabi -me'
4110         _cc_e='-ppl -fe=$@'
4111         _cc_o='-fe=$@'
4112         _depflags='-ppa -ppd=$(@:.o=.d)'
4113         _cflags_speed='-O3 -mf=5'
4114         _cflags_size='-O3 -mf=2'
4115         _flags_filter=tms470_flags
4116     elif $_cc -v 2>&1 | grep -q clang; then
4117         _type=clang
4118         _ident=$($_cc --version 2>/dev/null | head -n1)
4119         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4120         _cflags_speed='-O3'
4121         _cflags_size='-Oz'
4122     elif $_cc -V 2>&1 | grep -q Sun; then
4123         _type=suncc
4124         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4125         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4126         _DEPFLAGS='-xM1 -xc99'
4127         _ldflags='-std=c99'
4128         _cflags_speed='-O5'
4129         _cflags_size='-O5 -xspace'
4130         _flags_filter=suncc_flags
4131     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4132         _type=pathscale
4133         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4134         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4135         _cflags_speed='-O2'
4136         _cflags_size='-Os'
4137         _flags_filter='filter_out -Wdisabled-optimization'
4138     elif $_cc -v 2>&1 | grep -q Open64; then
4139         _type=open64
4140         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4141         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4142         _cflags_speed='-O2'
4143         _cflags_size='-Os'
4144         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4145     elif $_cc -V 2>&1 | grep -q Portland; then
4146         _type=pgi
4147         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
4148         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
4149         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
4150         _cflags_size="-O2 -Munroll=c:1 $opt_common"
4151         _cflags_noopt="-O"
4152         _flags_filter=pgi_flags
4153     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4154         _type=armasm
4155         _ident=$($_cc | head -n1)
4156         # 4509: "This form of conditional instruction is deprecated"
4157         _flags="-nologo -ignore 4509"
4158         _flags_filter=armasm_flags
4159     elif $_cc 2>&1 | grep -q Intel; then
4160         _type=icl
4161         _ident=$($_cc 2>&1 | head -n1)
4162         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4163         # Not only is O3 broken on 13.x+ but it is slower on all previous
4164         # versions (tested) as well.
4165         _cflags_speed="-O2"
4166         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4167         if $_cc 2>&1 | grep -q Linker; then
4168             _ld_o='-out:$@'
4169         else
4170             _ld_o='-Fe$@'
4171         fi
4172         _cc_o='-Fo$@'
4173         _cc_e='-P'
4174         _flags_filter=icl_flags
4175         _ld_lib='lib%.a'
4176         _ld_path='-libpath:'
4177         # -Qdiag-error to make icl error when seeing certain unknown arguments
4178         _flags='-nologo -Qdiag-error:4044,10157'
4179         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4180         # with MSVC which enables it by default.
4181         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4182         disable stripping
4183     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4184         # lld can emulate multiple different linkers; in ms link.exe mode,
4185         # the -? parameter gives the help output which contains an identifyable
4186         # string, while it gives an error in other modes.
4187         _type=lld-link
4188         # The link.exe mode doesn't have a switch for getting the version,
4189         # but we can force it back to gnu mode and get the version from there.
4190         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4191         _ld_o='-out:$@'
4192         _flags_filter=msvc_flags
4193         _ld_lib='lib%.a'
4194         _ld_path='-libpath:'
4195     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4196         _type=msvc
4197         _ident=$($_cc 2>&1 | head -n1)
4198         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4199         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4200         _cflags_speed="-O2"
4201         _cflags_size="-O1"
4202         _cflags_noopt="-O1"
4203         if $_cc -nologo- 2>&1 | grep -q Linker; then
4204             _ld_o='-out:$@'
4205         else
4206             _ld_o='-Fe$@'
4207         fi
4208         _cc_o='-Fo$@'
4209         _cc_e='-P -Fi$@'
4210         _flags_filter=msvc_flags
4211         _ld_lib='lib%.a'
4212         _ld_path='-libpath:'
4213         _flags='-nologo'
4214         disable stripping
4215     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4216         _type=cparser
4217         _ident=$($_cc --version | head -n1)
4218         _depflags='-MMD'
4219         _cflags_speed='-O4'
4220         _cflags_size='-O2'
4221         _flags_filter=cparser_flags
4222     fi
4223
4224     eval ${pfx}_type=\$_type
4225     eval ${pfx}_ident=\$_ident
4226 }
4227
4228 set_ccvars(){
4229     eval ${1}_C=\${_cc_c-\${${1}_C}}
4230     eval ${1}_E=\${_cc_e-\${${1}_E}}
4231     eval ${1}_O=\${_cc_o-\${${1}_O}}
4232
4233     if [ -n "$_depflags" ]; then
4234         eval ${1}_DEPFLAGS=\$_depflags
4235     else
4236         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4237         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4238         eval DEP${1}FLAGS=\$_flags
4239     fi
4240 }
4241
4242 probe_cc cc "$cc" "true"
4243 cflags_filter=$_flags_filter
4244 cflags_speed=$_cflags_speed
4245 cflags_size=$_cflags_size
4246 cflags_noopt=$_cflags_noopt
4247 add_cflags $_flags $_cflags
4248 cc_ldflags=$_ldflags
4249 set_ccvars CC
4250 set_ccvars CXX
4251
4252 probe_cc hostcc "$host_cc"
4253 host_cflags_filter=$_flags_filter
4254 host_cflags_speed=$_cflags_speed
4255 add_host_cflags  $_flags $_cflags
4256 set_ccvars HOSTCC
4257
4258 test -n "$cc_type" && enable $cc_type ||
4259     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4260
4261 : ${as_default:=$cc}
4262 : ${objcc_default:=$cc}
4263 : ${dep_cc_default:=$cc}
4264 : ${ld_default:=$cc}
4265 : ${host_ld_default:=$host_cc}
4266 set_default ar as objcc dep_cc ld ln_s host_ld windres
4267
4268 probe_cc as "$as"
4269 asflags_filter=$_flags_filter
4270 add_asflags $_flags $_cflags
4271 set_ccvars AS
4272
4273 probe_cc objcc "$objcc"
4274 objcflags_filter=$_flags_filter
4275 add_objcflags $_flags $_cflags
4276 set_ccvars OBJC
4277
4278 probe_cc ld "$ld"
4279 ldflags_filter=$_flags_filter
4280 add_ldflags $_flags $_ldflags
4281 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4282 LD_O=${_ld_o-$LD_O}
4283 LD_LIB=${_ld_lib-$LD_LIB}
4284 LD_PATH=${_ld_path-$LD_PATH}
4285
4286 probe_cc hostld "$host_ld"
4287 host_ldflags_filter=$_flags_filter
4288 add_host_ldflags $_flags $_ldflags
4289 HOSTLD_O=${_ld_o-$HOSTLD_O}
4290
4291 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4292     probe_cc depcc "$dep_cc"
4293     CCDEP=${_DEPCMD:-$DEPCMD}
4294     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4295     DEPCCFLAGS=$_flags
4296 fi
4297
4298 if $ar 2>&1 | grep -q Microsoft; then
4299     arflags="-nologo"
4300     ar_o='-out:$@'
4301 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
4302     arflags="rq"
4303     ar_o='$@'
4304 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
4305     arflags='-Xany -r -c'
4306     ar_o='$@'
4307 elif $ar 2>&1 | grep -q "\[D\] "; then
4308     arflags="rcD"
4309     ar_o='$@'
4310 else
4311     arflags="rc"
4312     ar_o='$@'
4313 fi
4314
4315 add_cflags $extra_cflags
4316 add_cxxflags $extra_cxxflags
4317 add_objcflags $extra_objcflags
4318 add_asflags $extra_cflags
4319
4320 if test -n "$sysroot"; then
4321     case "$cc_type" in
4322         gcc|llvm_gcc|clang)
4323             add_cppflags --sysroot="$sysroot"
4324             add_ldflags --sysroot="$sysroot"
4325 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
4326             add_cppflags -isysroot "$sysroot"
4327             add_ldflags -isysroot "$sysroot"
4328         ;;
4329         tms470)
4330             add_cppflags -I"$sysinclude"
4331             add_ldflags  --sysroot="$sysroot"
4332         ;;
4333     esac
4334 fi
4335
4336 if test "$cpu" = host; then
4337     enabled cross_compile &&
4338         die "--cpu=host makes no sense when cross-compiling."
4339
4340     case "$cc_type" in
4341         gcc|llvm_gcc)
4342             check_native(){
4343                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4344                 sed -n "/cc1.*$1=/{
4345                             s/.*$1=\\([^ ]*\\).*/\\1/
4346                             p
4347                             q
4348                         }" $TMPE
4349             }
4350             cpu=$(check_native -march || check_native -mcpu)
4351         ;;
4352         clang)
4353             check_native(){
4354                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4355                 sed -n "/cc1.*-target-cpu /{
4356                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4357                             p
4358                             q
4359                         }" $TMPE
4360             }
4361             cpu=$(check_native -march)
4362         ;;
4363     esac
4364
4365     test "${cpu:-host}" = host &&
4366         die "--cpu=host not supported with compiler $cc"
4367 fi
4368
4369 # Deal with common $arch aliases
4370 case "$arch" in
4371     aarch64|arm64)
4372         arch="aarch64"
4373     ;;
4374     arm*|iPad*|iPhone*)
4375         arch="arm"
4376     ;;
4377     mips*|IP*)
4378         case "$arch" in
4379         *el)
4380             add_cppflags -EL
4381             add_ldflags -EL
4382         ;;
4383         *eb)
4384             add_cppflags -EB
4385             add_ldflags -EB
4386         ;;
4387         esac
4388         arch="mips"
4389     ;;
4390     parisc*|hppa*)
4391         arch="parisc"
4392     ;;
4393     "Power Macintosh"|ppc*|powerpc*)
4394         arch="ppc"
4395     ;;
4396     s390|s390x)
4397         arch="s390"
4398     ;;
4399     sh4|sh)
4400         arch="sh4"
4401     ;;
4402     sun4*|sparc*)
4403         arch="sparc"
4404     ;;
4405     tilegx|tile-gx)
4406         arch="tilegx"
4407     ;;
4408     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4409         arch="x86"
4410     ;;
4411 esac
4412
4413 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4414 enable $arch
4415
4416 # Add processor-specific flags
4417 if enabled aarch64; then
4418
4419     case $cpu in
4420         armv*)
4421             cpuflags="-march=$cpu"
4422         ;;
4423         *)
4424             cpuflags="-mcpu=$cpu"
4425         ;;
4426     esac
4427
4428 elif enabled alpha; then
4429
4430     cpuflags="-mcpu=$cpu"
4431
4432 elif enabled arm; then
4433
4434     check_arm_arch() {
4435         check_cpp_condition stddef.h \
4436             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4437             $cpuflags
4438     }
4439
4440     probe_arm_arch() {
4441         if   check_arm_arch 4;        then echo armv4
4442         elif check_arm_arch 4T;       then echo armv4t
4443         elif check_arm_arch 5;        then echo armv5
4444         elif check_arm_arch 5E;       then echo armv5e
4445         elif check_arm_arch 5T;       then echo armv5t
4446         elif check_arm_arch 5TE;      then echo armv5te
4447         elif check_arm_arch 5TEJ;     then echo armv5te
4448         elif check_arm_arch 6;        then echo armv6
4449         elif check_arm_arch 6J;       then echo armv6j
4450         elif check_arm_arch 6K;       then echo armv6k
4451         elif check_arm_arch 6Z;       then echo armv6z
4452         elif check_arm_arch 6ZK;      then echo armv6zk
4453         elif check_arm_arch 6T2;      then echo armv6t2
4454         elif check_arm_arch 7;        then echo armv7
4455         elif check_arm_arch 7A  7_A;  then echo armv7-a
4456         elif check_arm_arch 7S;       then echo armv7-a
4457         elif check_arm_arch 7R  7_R;  then echo armv7-r
4458         elif check_arm_arch 7M  7_M;  then echo armv7-m
4459         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4460         elif check_arm_arch 8A  8_A;  then echo armv8-a
4461         fi
4462     }
4463
4464     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4465
4466     case $cpu in
4467         armv*)
4468             cpuflags="-march=$cpu"
4469             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4470         ;;
4471         *)
4472             cpuflags="-mcpu=$cpu"
4473             case $cpu in
4474                 cortex-a*)                               subarch=armv7a  ;;
4475                 cortex-r*)                               subarch=armv7r  ;;
4476                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4477                 arm11*)                                  subarch=armv6   ;;
4478                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4479                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4480                 *)                             subarch=$(probe_arm_arch) ;;
4481             esac
4482         ;;
4483     esac
4484
4485     case "$subarch" in
4486         armv5t*)    enable fast_clz                ;;
4487         armv[6-8]*)
4488             enable fast_clz
4489             disabled fast_unaligned || enable fast_unaligned
4490             ;;
4491     esac
4492
4493 elif enabled avr32; then
4494
4495     case $cpu in
4496         ap7[02]0[0-2])
4497             subarch="avr32_ap"
4498             cpuflags="-mpart=$cpu"
4499         ;;
4500         ap)
4501             subarch="avr32_ap"
4502             cpuflags="-march=$cpu"
4503         ;;
4504         uc3[ab]*)
4505             subarch="avr32_uc"
4506             cpuflags="-mcpu=$cpu"
4507         ;;
4508         uc)
4509             subarch="avr32_uc"
4510             cpuflags="-march=$cpu"
4511         ;;
4512     esac
4513
4514 elif enabled bfin; then
4515
4516     cpuflags="-mcpu=$cpu"
4517
4518 elif enabled mips; then
4519
4520     cpuflags="-march=$cpu"
4521
4522     if [ "$cpu" != "generic" ]; then
4523         disable mips32r2
4524         disable mips32r5
4525         disable mips64r2
4526         disable mips32r6
4527         disable mips64r6
4528         disable loongson2
4529         disable loongson3
4530
4531         case $cpu in
4532             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4533                 enable mips32r2
4534                 disable msa
4535             ;;
4536             p5600|i6400|p6600)
4537                 disable mipsdsp
4538                 disable mipsdspr2
4539             ;;
4540             loongson*)
4541                 enable loongson2
4542                 enable loongson3
4543                 enable local_aligned_8 local_aligned_16 local_aligned_32
4544                 enable simd_align_16
4545                 enable fast_64bit
4546                 enable fast_clz
4547                 enable fast_cmov
4548                 enable fast_unaligned
4549                 disable aligned_stack
4550                 disable mipsfpu
4551                 disable mipsdsp
4552                 disable mipsdspr2
4553                 case $cpu in
4554                     loongson3*)
4555                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4556                     ;;
4557                     loongson2e)
4558                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4559                     ;;
4560                     loongson2f)
4561                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4562                     ;;
4563                 esac
4564             ;;
4565             *)
4566                 # Unknown CPU. Disable everything.
4567                 warn "unknown CPU. Disabling all MIPS optimizations."
4568                 disable mipsfpu
4569                 disable mipsdsp
4570                 disable mipsdspr2
4571                 disable msa
4572                 disable mmi
4573             ;;
4574         esac
4575
4576         case $cpu in
4577             24kc)
4578                 disable mipsfpu
4579                 disable mipsdsp
4580                 disable mipsdspr2
4581             ;;
4582             24kf*)
4583                 disable mipsdsp
4584                 disable mipsdspr2
4585             ;;
4586             24kec|34kc|1004kc)
4587                 disable mipsfpu
4588                 disable mipsdspr2
4589             ;;
4590             24kef*|34kf*|1004kf*)
4591                 disable mipsdspr2
4592             ;;
4593             74kc)
4594                 disable mipsfpu
4595             ;;
4596             p5600)
4597                 enable mips32r5
4598                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4599             ;;
4600             i6400)
4601                 enable mips64r6
4602                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4603             ;;
4604             p6600)
4605                 enable mips64r6
4606                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4607             ;;
4608         esac
4609     else
4610         # We do not disable anything. Is up to the user to disable the unwanted features.
4611         warn 'generic cpu selected'
4612     fi
4613
4614 elif enabled ppc; then
4615
4616     disable ldbrx
4617
4618     case $(tolower $cpu) in
4619         601|ppc601|powerpc601)
4620             cpuflags="-mcpu=601"
4621             disable altivec
4622         ;;
4623         603*|ppc603*|powerpc603*)
4624             cpuflags="-mcpu=603"
4625             disable altivec
4626         ;;
4627         604*|ppc604*|powerpc604*)
4628             cpuflags="-mcpu=604"
4629             disable altivec
4630         ;;
4631         g3|75*|ppc75*|powerpc75*)
4632             cpuflags="-mcpu=750"
4633             disable altivec
4634         ;;
4635         g4|745*|ppc745*|powerpc745*)
4636             cpuflags="-mcpu=7450"
4637             disable vsx
4638         ;;
4639         74*|ppc74*|powerpc74*)
4640             cpuflags="-mcpu=7400"
4641             disable vsx
4642         ;;
4643         g5|970|ppc970|powerpc970)
4644             cpuflags="-mcpu=970"
4645             disable vsx
4646         ;;
4647         power[3-6]*)
4648             cpuflags="-mcpu=$cpu"
4649             disable vsx
4650         ;;
4651         power[7-8]*)
4652             cpuflags="-mcpu=$cpu"
4653         ;;
4654         cell)
4655             cpuflags="-mcpu=cell"
4656             enable ldbrx
4657             disable vsx
4658         ;;
4659         e500mc)
4660             cpuflags="-mcpu=e500mc"
4661             disable altivec
4662         ;;
4663         e500v2)
4664             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4665             disable altivec
4666             disable dcbzl
4667         ;;
4668         e500)
4669             cpuflags="-mcpu=8540 -mhard-float"
4670             disable altivec
4671             disable dcbzl
4672         ;;
4673     esac
4674
4675 elif enabled sparc; then
4676
4677     case $cpu in
4678         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4679             cpuflags="-mcpu=$cpu"
4680         ;;
4681         ultrasparc*|niagara[234])
4682             cpuflags="-mcpu=$cpu"
4683         ;;
4684     esac
4685
4686 elif enabled x86; then
4687
4688     case $cpu in
4689         i[345]86|pentium)
4690             cpuflags="-march=$cpu"
4691             disable i686
4692             disable mmx
4693         ;;
4694         # targets that do NOT support nopl and conditional mov (cmov)
4695         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4696             cpuflags="-march=$cpu"
4697             disable i686
4698         ;;
4699         # targets that do support nopl and conditional mov (cmov)
4700         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4701         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4702         |amdfam10|barcelona|b[dt]ver*|znver*)
4703             cpuflags="-march=$cpu"
4704             enable i686
4705             enable fast_cmov
4706         ;;
4707         # targets that do support conditional mov but on which it's slow
4708         pentium4|pentium4m|prescott|nocona)
4709             cpuflags="-march=$cpu"
4710             enable i686
4711             disable fast_cmov
4712         ;;
4713     esac
4714
4715 fi
4716
4717 if [ "$cpu" != generic ]; then
4718     add_cflags  $cpuflags
4719     add_asflags $cpuflags
4720     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4721 fi
4722
4723 # compiler sanity check
4724 check_exec <<EOF
4725 int main(void){ return 0; }
4726 EOF
4727 if test "$?" != 0; then
4728     echo "$cc is unable to create an executable file."
4729     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4730         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4731         echo "Only do this if you know what cross compiling means."
4732     fi
4733     die "C compiler test failed."
4734 fi
4735
4736 add_cppflags -D_ISOC99_SOURCE
4737 add_cxxflags -D__STDC_CONSTANT_MACROS
4738 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4739
4740 # some compilers silently accept -std=c11, so we also need to check that the
4741 # version macro is defined properly
4742 if test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L"; then
4743     add_cflags -std=c11
4744 else
4745     check_cflags -std=c99
4746 fi
4747
4748 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4749 #include <stdlib.h>
4750 EOF
4751 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4752 #include <stdlib.h>
4753 EOF
4754
4755 add_host_cppflags -D_ISOC99_SOURCE
4756 check_host_cflags -std=c99
4757 check_host_cflags -Wall
4758 check_host_cflags $host_cflags_speed
4759
4760 check_64bit(){
4761     arch32=$1
4762     arch64=$2
4763     expr=$3
4764     check_code cc "" "int test[2*($expr) - 1]" &&
4765         subarch=$arch64 || subarch=$arch32
4766 }
4767
4768 case "$arch" in
4769     aarch64|alpha|ia64)
4770         spic=$shared
4771     ;;
4772     mips)
4773         check_64bit mips mips64 '_MIPS_SIM > 1'
4774         spic=$shared
4775     ;;
4776     parisc)
4777         check_64bit parisc parisc64 'sizeof(void *) > 4'
4778         spic=$shared
4779     ;;
4780     ppc)
4781         check_64bit ppc ppc64 'sizeof(void *) > 4'
4782         spic=$shared
4783     ;;
4784     s390)
4785         check_64bit s390 s390x 'sizeof(void *) > 4'
4786         spic=$shared
4787     ;;
4788     sparc)
4789         check_64bit sparc sparc64 'sizeof(void *) > 4'
4790         spic=$shared
4791     ;;
4792     x86)
4793         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4794         # Treat x32 as x64 for now. Note it also needs spic=$shared
4795         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4796             subarch=x86_64
4797         if test "$subarch" = "x86_64"; then
4798             spic=$shared
4799         fi
4800     ;;
4801     ppc)
4802         check_cc <<EOF && subarch="ppc64"
4803         int test[(int)sizeof(char*) - 7];
4804 EOF
4805     ;;
4806 esac
4807
4808 enable $subarch
4809 enabled spic && enable_weak pic
4810
4811 enabled x86_64 && objformat=elf64 || objformat="elf32"
4812
4813 # OS specific
4814 case $target_os in
4815     aix)
4816         SHFLAGS=-shared
4817         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4818         enabled shared && add_ldflags -Wl,-brtl
4819         ;;
4820     android)
4821         disable symver
4822         enable section_data_rel_ro
4823         SLIB_INSTALL_NAME='$(SLIBNAME)'
4824         SLIB_INSTALL_LINKS=
4825         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4826         ;;
4827     haiku)
4828         prefix_default="/boot/common"
4829         network_extralibs="-lnetwork"
4830         host_extralibs=
4831         ;;
4832     sunos)
4833         SHFLAGS='-shared -Wl,-h,$$(@F)'
4834         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4835         network_extralibs="-lsocket -lnsl"
4836         add_cppflags -D__EXTENSIONS__
4837         # When using suncc to build, the Solaris linker will mark
4838         # an executable with each instruction set encountered by
4839         # the Solaris assembler.  As our libraries contain their own
4840         # guards for processor-specific code, instead suppress
4841         # generation of the HWCAPS ELF section on Solaris x86 only.
4842         enabled_all suncc x86 &&
4843             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4844             add_ldflags -Wl,-M,mapfile
4845         nm_default='nm -P -g'
4846         version_script='-M'
4847         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
4848         ;;
4849     netbsd)
4850         disable symver
4851         oss_indev_extralibs="-lossaudio"
4852         oss_outdev_extralibs="-lossaudio"
4853         enabled gcc || check_ldflags -Wl,-zmuldefs
4854         ;;
4855     openbsd|bitrig)
4856         disable symver
4857         SHFLAGS='-shared'
4858         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4859         SLIB_INSTALL_LINKS=
4860         oss_indev_extralibs="-lossaudio"
4861         oss_outdev_extralibs="-lossaudio"
4862         ;;
4863     dragonfly)
4864         disable symver
4865         ;;
4866     freebsd)
4867         ;;
4868     bsd/os)
4869         add_extralibs -lpoll -lgnugetopt
4870         strip="strip -d"
4871         ;;
4872     darwin)
4873         enabled ppc && add_asflags -force_cpusubtype_ALL
4874         install_name_dir_default='$(SHLIBDIR)'
4875         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4876         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4877         strip="${strip} -x"
4878         add_ldflags -Wl,-dynamic,-search_paths_first
4879         SLIBSUF=".dylib"
4880         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4881         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4882         objformat="macho"
4883         enabled x86_64 && objformat="macho64" || objformat="macho32"
4884         enabled_any pic shared x86_64 ||
4885             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4886         check_header dispatch/dispatch.h &&
4887             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
4888         version_script='-exported_symbols_list'
4889         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
4890         ;;
4891     msys*)
4892         die "Native MSYS builds are discouraged, please use the MINGW environment."
4893         ;;
4894     mingw32*|mingw64*)
4895         if test $target_os = "mingw32ce"; then
4896             disable network
4897         else
4898             target_os=mingw32
4899         fi
4900         LIBTARGET=i386
4901         if enabled x86_64; then
4902             LIBTARGET="i386:x86-64"
4903         elif enabled arm; then
4904             LIBTARGET=arm-wince
4905         fi
4906         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4907         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4908         shlibdir_default="$bindir_default"
4909         SLIBPREF=""
4910         SLIBSUF=".dll"
4911         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4912         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4913         dlltool="${cross_prefix}dlltool"
4914         if check_cmd lib.exe -list; then
4915             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4916             if enabled x86_64; then
4917                 LIBTARGET=x64
4918             fi
4919         elif check_cmd $dlltool --version; then
4920             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4921         fi
4922         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4923         SLIB_INSTALL_LINKS=
4924         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4925         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4926         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--disable-auto-image-base'
4927         enabled x86_64 && objformat="win64" || objformat="win32"
4928         ranlib=:
4929         enable dos_paths
4930         check_ldflags -Wl,--nxcompat,--dynamicbase
4931         # Lets work around some stupidity in binutils.
4932         # ld will strip relocations from executables even though we need them
4933         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4934         # however ld then forgets what the entry point should be (oops) so we
4935         # have to manually (re)set it.
4936         if enabled x86_32; then
4937             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
4938         elif enabled x86_64; then
4939             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
4940             check_ldflags -Wl,--high-entropy-va # binutils 2.25
4941             # Set image base >4GB for extra entropy with HEASLR
4942             add_ldexeflags -Wl,--image-base,0x140000000
4943             append SHFLAGS -Wl,--image-base,0x180000000
4944         fi
4945         ;;
4946     win32|win64)
4947         disable symver
4948         if enabled shared; then
4949             # Link to the import library instead of the normal static library
4950             # for shared libs.
4951             LD_LIB='%.lib'
4952             # Cannot build both shared and static libs with MSVC or icl.
4953             disable static
4954         fi
4955         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4956         shlibdir_default="$bindir_default"
4957         SLIBPREF=""
4958         SLIBSUF=".dll"
4959         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4960         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4961         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4962         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4963         SLIB_INSTALL_LINKS=
4964         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4965         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4966         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4967         enabled x86_64 && objformat="win64" || objformat="win32"
4968         ranlib=:
4969         enable dos_paths
4970         ;;
4971     cygwin*)
4972         target_os=cygwin
4973         shlibdir_default="$bindir_default"
4974         SLIBPREF="cyg"
4975         SLIBSUF=".dll"
4976         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4977         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4978         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4979         SLIB_INSTALL_LINKS=
4980         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4981         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4982         enabled x86_64 && objformat="win64" || objformat="win32"
4983         enable dos_paths
4984         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4985         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4986         ;;
4987     *-dos|freedos|opendos)
4988         network_extralibs="-lsocket"
4989         objformat="coff"
4990         enable dos_paths
4991         add_cppflags -U__STRICT_ANSI__
4992         ;;
4993     linux)
4994         enable dv1394
4995         enable section_data_rel_ro
4996         ;;
4997     irix*)
4998         target_os=irix
4999         ranlib="echo ignoring ranlib"
5000         ;;
5001     os/2*)
5002         strip="lxlite -CS"
5003         objformat="aout"
5004         add_cppflags -D_GNU_SOURCE
5005         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5006         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5007         LIBSUF="_s.a"
5008         SLIBPREF=""
5009         SLIBSUF=".dll"
5010         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5011         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5012         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5013             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5014             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5015             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5016             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5017         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5018             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5019         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5020         SLIB_INSTALL_LINKS=
5021         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5022         enable dos_paths
5023         enable_weak os2threads
5024         ;;
5025     gnu/kfreebsd)
5026         add_cppflags -D_BSD_SOURCE
5027         ;;
5028     gnu)
5029         ;;
5030     qnx)
5031         add_cppflags -D_QNX_SOURCE
5032         network_extralibs="-lsocket"
5033         ;;
5034     symbian)
5035         SLIBSUF=".dll"
5036         enable dos_paths
5037         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5038         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5039         add_ldflags -Wl,--target1-abs,--no-undefined \
5040                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5041                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5042         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5043                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5044                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5045         ;;
5046     osf1)
5047         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
5048         ;;
5049     minix)
5050         ;;
5051     none)
5052         ;;
5053     *)
5054         die "Unknown OS '$target_os'."
5055         ;;
5056 esac
5057
5058 # test if creating links works
5059 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5060 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5061 mkdir "$link_dest"
5062 $ln_s "$link_dest" "$link_name"
5063 touch "$link_dest/test_file"
5064 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5065     # create link to source path
5066     [ -e src ] && rm src
5067     $ln_s "$source_path" src
5068     source_link=src
5069 else
5070     # creating directory links doesn't work
5071     # fall back to using the full source path
5072     source_link="$source_path"
5073 fi
5074 # cleanup
5075 rm -r "$link_dest"
5076 rm -r "$link_name"
5077
5078 # determine libc flavour
5079
5080 probe_libc(){
5081     pfx=$1
5082     pfx_no_=${pfx%_}
5083     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5084     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5085         eval ${pfx}libc_type=uclibc
5086         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5087     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5088         eval ${pfx}libc_type=glibc
5089         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5090     # MinGW headers can be installed on Cygwin, so check for newlib first.
5091     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5092         eval ${pfx}libc_type=newlib
5093         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5094     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5095     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5096         eval ${pfx}libc_type=mingw64
5097         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5098             add_compat msvcrt/snprintf.o
5099             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5100         fi
5101         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5102         eval test \$${pfx_no_}cc_type = "gcc" &&
5103             add_${pfx}cppflags -D__printf__=__gnu_printf__
5104     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5105          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5106         eval ${pfx}libc_type=mingw32
5107         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5108             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5109             die "ERROR: MinGW32 runtime version must be >= 3.15."
5110         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5111         check_${pfx}cpp_condition _mingw.h "defined(_WIN32_WINNT) && _WIN32_WINNT >= 0x0502" ||
5112             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
5113         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5114             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5115         eval test \$${pfx_no_}cc_type = "gcc" &&
5116             add_${pfx}cppflags -D__printf__=__gnu_printf__
5117     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5118         eval ${pfx}libc_type=msvcrt
5119         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5120             if [ "$pfx" = host_ ]; then
5121                 add_host_cppflags -Dsnprintf=_snprintf
5122             else
5123                 add_compat strtod.o strtod=avpriv_strtod
5124                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5125                                              _snprintf=avpriv_snprintf  \
5126                                              vsnprintf=avpriv_vsnprintf
5127             fi
5128         fi
5129         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5130         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5131         # 0x601 by default unless something else is set by the user.
5132         # This can easily lead to us detecting functions only present
5133         # in such new versions and producing binaries requiring windows 7.0.
5134         # Therefore explicitly set the default to XP unless the user has
5135         # set something else on the command line.
5136         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5137         # family. For these cases, configure is free to use any functions
5138         # found in the SDK headers by default. (Alternatively, we could force
5139         # _WIN32_WINNT to 0x0602 in that case.)
5140         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5141             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
5142 #ifdef WINAPI_FAMILY
5143 #include <winapifamily.h>
5144 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5145 #error not desktop
5146 #endif
5147 #endif
5148 EOF
5149         if [ "$pfx" = "" ]; then
5150             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5151             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5152         fi
5153     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5154         eval ${pfx}libc_type=klibc
5155     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5156         eval ${pfx}libc_type=bionic
5157     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5158         eval ${pfx}libc_type=solaris
5159         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5160     fi
5161     check_${pfx}cc <<EOF
5162 #include <time.h>
5163 void *v = localtime_r;
5164 EOF
5165 test "$?" != 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
5166 #include <time.h>
5167 void *v = localtime_r;
5168 EOF
5169
5170 }
5171
5172 probe_libc
5173 test -n "$libc_type" && enable libc_$libc_type
5174 probe_libc host_
5175 test -n "$host_libc_type" && enable host_libc_$host_libc_type
5176
5177 case $libc_type in
5178     bionic)
5179         add_compat strtod.o strtod=avpriv_strtod
5180         ;;
5181 esac
5182
5183 # hacks for compiler/libc/os combinations
5184
5185 if enabled_all tms470 libc_glibc; then
5186     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
5187     add_cppflags -D__USER_LABEL_PREFIX__=
5188     add_cppflags -D__builtin_memset=memset
5189     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
5190     add_cflags   -pds=48    # incompatible redefinition of macro
5191 fi
5192
5193 if enabled_all ccc libc_glibc; then
5194     add_ldflags -Wl,-z,now  # calls to libots crash without this
5195 fi
5196
5197 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5198     add_cppflags '-I\$(SRC_PATH)/compat/float'
5199
5200 esc(){
5201     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
5202 }
5203
5204 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
5205
5206 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5207
5208 set_default libdir
5209 : ${shlibdir_default:="$libdir"}
5210 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5211
5212 set_default $PATHS_LIST
5213 set_default nm
5214
5215 # we need to build at least one lib type
5216 if ! enabled_any static shared; then
5217     cat <<EOF
5218 At least one library type must be built.
5219 Specify --enable-static to build the static libraries or --enable-shared to
5220 build the shared libraries as well. To only build the shared libraries specify
5221 --disable-static in addition to --enable-shared.
5222 EOF
5223     exit 1
5224 fi
5225
5226 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5227
5228 enable_weak_pic() {
5229     disabled pic && return
5230     enable pic
5231     add_cppflags -DPIC
5232     case "$target_os" in
5233     mingw*|cygwin*)
5234         ;;
5235     *)
5236         add_cflags -fPIC
5237         ;;
5238     esac
5239     add_asflags  -fPIC
5240 }
5241
5242 enabled pic && enable_weak_pic
5243
5244 check_cc <<EOF || die "Symbol mangling check failed."
5245 int ff_extern;
5246 EOF
5247 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5248 extern_prefix=${sym%%ff_extern*}
5249
5250 check_cc <<EOF && enable_weak inline_asm
5251 void foo(void) { __asm__ volatile ("" ::); }
5252 EOF
5253
5254 _restrict=
5255 for restrict_keyword in restrict __restrict__ __restrict; do
5256     check_cc <<EOF && _restrict=$restrict_keyword && break
5257 void foo(char * $restrict_keyword p);
5258 EOF
5259 done
5260
5261 check_cc <<EOF && enable pragma_deprecated
5262 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
5263 EOF
5264
5265 check_cc <<EOF && enable attribute_packed
5266 struct { int x; } __attribute__((packed)) x;
5267 EOF
5268
5269 check_cc <<EOF && enable attribute_may_alias
5270 union { int x; } __attribute__((may_alias)) x;
5271 EOF
5272
5273 check_cc <<EOF || die "endian test failed"
5274 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5275 EOF
5276 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5277
5278 if ! enabled ppc64 || enabled bigendian; then
5279     disable vsx
5280 fi
5281
5282 check_gas() {
5283     log "check_gas using '$as' as AS"
5284     # :vararg is used on aarch64, arm and ppc altivec
5285     check_as <<EOF || return 1
5286 .macro m n, y:vararg=0
5287 \n: .int \y
5288 .endm
5289 m x
5290 EOF
5291     # .altmacro is only used in arm asm
5292     ! enabled arm || check_as <<EOF || return 1
5293 .altmacro
5294 EOF
5295     enable gnu_as
5296     return 0
5297 }
5298
5299 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5300     nogas=:
5301     enabled_any arm aarch64 && nogas=die
5302     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5303     as_noop=-v
5304
5305     case $as_type in
5306         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5307         gcc)  gaspp_as_type=gas ;;
5308         *)    gaspp_as_type=$as_type ;;
5309     esac
5310
5311     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5312
5313     test "${as#*gas-preprocessor.pl}" != "$as" ||
5314     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5315         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5316
5317     if ! check_gas ; then
5318         as=${gas:=$as}
5319         check_gas || \
5320             $nogas "GNU assembler not found, install/update gas-preprocessor"
5321     fi
5322
5323     check_as <<EOF && enable as_func
5324 .func test
5325 .endfunc
5326 EOF
5327 fi
5328
5329 check_inline_asm inline_asm_labels '"1:\n"'
5330
5331 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5332
5333 if enabled aarch64; then
5334     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5335     # internal assembler in clang 3.3 does not support this instruction
5336     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5337     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5338
5339     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5340
5341 elif enabled alpha; then
5342
5343     check_cflags -mieee
5344
5345 elif enabled arm; then
5346
5347     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
5348
5349     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
5350 float func(float a, float b){ return a+b; }
5351 EOF
5352
5353     enabled thumb && check_cflags -mthumb || check_cflags -marm
5354
5355     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
5356         enable vfp_args
5357     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5358         enable vfp_args
5359     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5360         case "${cross_prefix:-$cc}" in
5361             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
5362             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
5363 __asm__ (".eabi_attribute 28, 1");
5364 int main(void) { return 0; }
5365 EOF
5366         esac
5367         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5368     fi
5369
5370     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5371     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5372     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5373     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5374     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5375     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5376     enabled setend  && check_insn setend  'setend be'
5377
5378     [ $target_os = linux ] || [ $target_os = android ] ||
5379         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5380             $ARCH_EXT_LIST_ARM
5381
5382     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5383
5384     check_as <<EOF && enable as_dn_directive
5385 ra .dn d0.i16
5386 .unreq ra
5387 EOF
5388     check_as <<EOF && enable as_fpu_directive
5389 .fpu neon
5390 EOF
5391
5392     # llvm's integrated assembler supports .object_arch from llvm 3.5
5393     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5394         check_as <<EOF && enable as_object_arch
5395 .object_arch armv4
5396 EOF
5397
5398     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5399
5400 elif enabled mips; then
5401
5402     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5403     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5404     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5405
5406     # Enable minimum ISA based on selected options
5407     if enabled mips64; then
5408         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5409         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5410         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5411     else
5412         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5413         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5414         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5415         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5416     fi
5417
5418     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5419     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5420     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
5421     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5422     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5423
5424     if enabled bigendian && enabled msa; then
5425         disable msa
5426     fi
5427
5428 elif enabled parisc; then
5429
5430     if enabled gcc; then
5431         case $($cc -dumpversion) in
5432             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5433         esac
5434     fi
5435
5436 elif enabled ppc; then
5437
5438     enable local_aligned_8 local_aligned_16 local_aligned_32
5439
5440     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5441     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5442     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5443     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5444
5445     # AltiVec flags: The FSF version of GCC differs from the Apple version
5446     if enabled altivec; then
5447         check_cflags -maltivec -mabi=altivec &&
5448         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
5449         check_cflags -faltivec
5450
5451         # check if our compiler supports Motorola AltiVec C API
5452         check_cc <<EOF || disable altivec
5453 $inc_altivec_h
5454 int main(void) {
5455     vector signed int v1 = (vector signed int) { 0 };
5456     vector signed int v2 = (vector signed int) { 1 };
5457     v1 = vec_add(v1, v2);
5458     return 0;
5459 }
5460 EOF
5461
5462         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5463     fi
5464
5465     if enabled vsx; then
5466         check_cflags -mvsx &&
5467         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
5468     fi
5469
5470     if enabled power8; then
5471         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
5472     fi
5473
5474 elif enabled x86; then
5475
5476     check_builtin rdtsc    intrin.h   "__rdtsc()"
5477     check_builtin mm_empty mmintrin.h "_mm_empty()"
5478
5479     enable local_aligned_8 local_aligned_16 local_aligned_32
5480
5481     # check whether EBP is available on x86
5482     # As 'i' is stored on the stack, this program will crash
5483     # if the base pointer is used to access it because the
5484     # base pointer is cleared in the inline assembly code.
5485     check_exec_crash <<EOF && enable ebp_available
5486 volatile int i=0;
5487 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5488 return i;
5489 EOF
5490
5491     # check whether EBX is available on x86
5492     check_inline_asm ebx_available '""::"b"(0)' &&
5493         check_inline_asm ebx_available '"":::"%ebx"'
5494
5495     # check whether xmm clobbers are supported
5496     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5497
5498     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5499         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5500
5501     # check whether binutils is new enough to compile SSSE3/MMXEXT
5502     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5503     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5504
5505     probe_x86asm(){
5506         x86asmexe_probe=$1
5507         if check_cmd $x86asmexe_probe -v; then
5508             x86asmexe=$x86asmexe_probe
5509             x86asm_type=nasm
5510             x86asm_debug="-g -F dwarf"
5511         elif check_cmd $x86asmexe_probe --version; then
5512             x86asmexe=$x86asmexe_probe
5513             x86asm_type=yasm
5514             x86asm_debug="-g dwarf2"
5515         fi
5516         check_x86asm "movbe ecx, [5]" && enable x86asm
5517     }
5518
5519     if ! disabled_any asm mmx x86asm; then
5520         disable x86asm
5521         for program in $x86asmexe nasm yasm; do
5522             probe_x86asm $program && break
5523         done
5524         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
5525         test $x86asm_type = 'nasm' && X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
5526         test $x86asm_type = 'yasm' && X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
5527         X86ASMFLAGS="-f $objformat"
5528         enabled pic               && append X86ASMFLAGS "-DPIC"
5529         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
5530         case "$objformat" in
5531             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
5532         esac
5533
5534         check_x86asm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
5535         check_x86asm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
5536         check_x86asm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
5537         check_x86asm "CPU amdnop" || disable cpunop
5538     fi
5539
5540     case "$cpu" in
5541         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5542             disable fast_clz
5543         ;;
5544     esac
5545
5546 fi
5547
5548 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
5549
5550 check_ldflags -Wl,--as-needed
5551 check_ldflags -Wl,-z,noexecstack
5552
5553 if check_func dlopen && check_func dlsym; then
5554     ldl=
5555 elif check_func dlopen -ldl && check_func dlsym -ldl; then
5556     ldl=-ldl
5557 fi
5558
5559 avisynth_demuxer_extralibs='$ldl'
5560 cuda_extralibs='$ldl'
5561 decklink_outdev_extralibs="$decklink_outdev_extralibs $ldl"
5562 decklink_indev_extralibs="$decklink_indev_extralibs $ldl"
5563 frei0r_filter_extralibs='$ldl'
5564 frei0r_src_filter_extralibs='$ldl'
5565 ladspa_filter_extralibs='$ldl'
5566 nvenc_extralibs='$ldl'
5567 coreimage_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5568 coreimagesrc_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5569
5570 if ! disabled network; then
5571     check_func getaddrinfo $network_extralibs
5572     check_func inet_aton $network_extralibs
5573
5574     check_type netdb.h "struct addrinfo"
5575     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5576     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5577     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5578     check_type poll.h "struct pollfd"
5579     check_type netinet/sctp.h "struct sctp_event_subscribe"
5580     check_struct "sys/socket.h" "struct msghdr" msg_flags
5581     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5582     check_type netinet/in.h "struct sockaddr_in6"
5583     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5584     check_type "sys/types.h sys/socket.h" socklen_t
5585
5586     # Prefer arpa/inet.h over winsock2
5587     if check_header arpa/inet.h ; then
5588         check_func closesocket
5589     elif check_header winsock2.h ; then
5590         check_func_headers winsock2.h closesocket -lws2 &&
5591             network_extralibs="-lws2" ||
5592         { check_func_headers winsock2.h closesocket -lws2_32 &&
5593             network_extralibs="-lws2_32"; } || disable winsock2_h network
5594         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5595
5596         check_type ws2tcpip.h socklen_t
5597         check_type ws2tcpip.h "struct addrinfo"
5598         check_type ws2tcpip.h "struct group_source_req"
5599         check_type ws2tcpip.h "struct ip_mreq_source"
5600         check_type ws2tcpip.h "struct ipv6_mreq"
5601         check_type winsock2.h "struct pollfd"
5602         check_struct winsock2.h "struct sockaddr" sa_len
5603         check_type ws2tcpip.h "struct sockaddr_in6"
5604         check_type ws2tcpip.h "struct sockaddr_storage"
5605     else
5606         disable network
5607     fi
5608 fi
5609
5610 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5611 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5612 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5613 check_builtin sarestart signal.h "SA_RESTART"
5614 check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" -lpthread
5615 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5616 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5617 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5618 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5619
5620 case "$custom_allocator" in
5621     jemalloc)
5622         # jemalloc by default does not use a prefix
5623         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5624     ;;
5625     tcmalloc)
5626         require_pkg_config libtcmalloc gperftools/tcmalloc.h tc_malloc
5627         malloc_prefix=tc_
5628     ;;
5629 esac
5630
5631 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5632 check_func  ${malloc_prefix}memalign            && enable memalign
5633 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5634
5635 check_func  access
5636 check_func_headers stdlib.h arc4random
5637 check_func_headers time.h clock_gettime ||
5638     { check_lib clock_gettime time.h clock_gettime -lrt && LIBRT="-lrt"; }
5639 check_func  fcntl
5640 check_func  fork
5641 check_func  gethrtime
5642 check_func  getopt
5643 check_func  getrusage
5644 check_func  gettimeofday
5645 check_func  isatty
5646 check_func  mach_absolute_time
5647 check_func  mkstemp
5648 check_func  mmap
5649 check_func  mprotect
5650 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5651 check_func_headers time.h nanosleep ||
5652     { check_lib nanosleep time.h nanosleep -lrt && LIBRT="-lrt"; }
5653 check_func  sched_getaffinity
5654 check_func  setrlimit
5655 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5656 check_func  strerror_r
5657 check_func  sysconf
5658 check_func  sysctl
5659 check_func  usleep
5660
5661 check_func_headers conio.h kbhit
5662 check_func_headers io.h setmode
5663 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5664 check_func_headers stdlib.h getenv
5665 check_func_headers sys/stat.h lstat
5666
5667 check_func_headers windows.h GetProcessAffinityMask
5668 check_func_headers windows.h GetProcessTimes
5669 check_func_headers windows.h GetSystemTimeAsFileTime
5670 check_func_headers windows.h LoadLibrary
5671 check_func_headers windows.h MapViewOfFile
5672 check_func_headers windows.h PeekNamedPipe
5673 check_func_headers windows.h SetConsoleTextAttribute
5674 check_func_headers windows.h SetConsoleCtrlHandler
5675 check_func_headers windows.h Sleep
5676 check_func_headers windows.h VirtualAlloc
5677 check_struct windows.h "CONDITION_VARIABLE" Ptr
5678 check_func_headers glob.h glob
5679 enabled xlib &&
5680     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5681
5682 check_header AudioToolbox/AudioToolbox.h
5683 check_header d3d11.h
5684 check_header direct.h
5685 check_header dirent.h
5686 check_header dlfcn.h
5687 check_header dxgidebug.h
5688 check_header dxva.h
5689 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5690 check_header io.h
5691 check_header libcrystalhd/libcrystalhd_if.h
5692 check_header mach/mach_time.h
5693 check_header malloc.h
5694 check_header net/udplite.h
5695 check_header poll.h
5696 check_header sys/mman.h
5697 check_header sys/param.h
5698 check_header sys/resource.h
5699 check_header sys/select.h
5700 check_header sys/time.h
5701 check_header sys/un.h
5702 check_header termios.h
5703 check_header unistd.h
5704 check_header valgrind/valgrind.h
5705 check_header VideoDecodeAcceleration/VDADecoder.h
5706 check_header VideoToolbox/VideoToolbox.h
5707 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5708 enabled videotoolbox && check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferColorPrimaries_ITU_R_2020 -framework CoreVideo
5709 check_header windows.h
5710 check_header X11/extensions/XvMClib.h
5711 check_header asm/types.h
5712
5713 # it seems there are versions of clang in some distros that try to use the
5714 # gcc headers, which explodes for stdatomic
5715 # so we also check that atomics actually work here
5716 check_builtin stdatomic_h stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0)"
5717
5718 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
5719 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
5720 check_lib wincrypt "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
5721 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
5722
5723 check_lib coreservices "CoreServices/CoreServices.h" UTGetOSTypeFromString "-framework CoreServices"
5724
5725 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5726
5727 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5728 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5729 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5730 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5731 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5732
5733 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
5734 check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
5735 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
5736 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
5737 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5738 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5739 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
5740 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
5741 check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
5742
5743 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5744
5745 check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt
5746
5747 if ! disabled w32threads && ! enabled pthreads; then
5748     check_func_headers "windows.h process.h" _beginthreadex &&
5749         enable w32threads || disable w32threads
5750     if ! enabled w32threads && enabled winrt; then
5751         check_func_headers "windows.h" CreateThread &&
5752             enable w32threads || disable w32threads
5753     fi
5754 fi
5755
5756 # check for some common methods of building with pthread support
5757 # do this before the optional library checks as some of them require pthreads
5758 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5759     if check_lib pthreads pthread.h pthread_join   -pthread &&
5760        check_lib pthreads pthread.h pthread_create -pthread; then
5761         add_cflags -pthread
5762     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
5763          check_lib pthreads pthread.h pthread_create -pthreads; then
5764         add_cflags -pthreads
5765     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
5766          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
5767         add_cflags -ldl -pthread
5768     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
5769          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
5770         :
5771     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
5772          check_lib pthreads pthread.h pthread_create -lpthread; then
5773         :
5774     elif check_func pthread_join && check_func pthread_create; then
5775         enable pthreads
5776     fi
5777     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5778 fi
5779
5780
5781 if enabled pthreads; then
5782   check_func pthread_cancel
5783 fi
5784
5785 enabled pthreads &&
5786     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)"
5787
5788 disabled  zlib || check_lib zlib   zlib.h      zlibVersion    -lz
5789 disabled bzlib || check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
5790 disabled  lzma || check_lib lzma   lzma.h lzma_version_number -llzma
5791
5792 check_lib libm math.h sin -lm && LIBM="-lm"
5793 disabled crystalhd || check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
5794
5795 atan2f_args=2
5796 copysign_args=2
5797 hypot_args=2
5798 ldexpf_args=2
5799 powf_args=2
5800
5801 for func in $MATH_FUNCS; do
5802     eval check_mathfunc $func \${${func}_args:-1} $LIBM
5803 done
5804
5805 for func in $COMPLEX_FUNCS; do
5806     eval check_complexfunc $func \${${func}_args:-1}
5807 done
5808
5809 # these are off by default, so fail if requested and not available
5810 enabled avfoundation_indev && { check_header_objcc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
5811 enabled avfoundation_indev && { check_lib avfoundation_indev CoreGraphics/CoreGraphics.h CGGetActiveDisplayList -framework CoreGraphics ||
5812                                 check_lib avfoundation_indev ApplicationServices/ApplicationServices.h CGGetActiveDisplayList -framework ApplicationServices; }
5813 enabled cuda_sdk          && require cuda_sdk cuda.h cuCtxCreate -lcuda
5814 enabled cuvid             && { enabled cuda ||
5815                                die "ERROR: CUVID requires CUDA"; }
5816 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5817 enabled coreimage_filter  && { check_header_objcc QuartzCore/CoreImage.h || disable coreimage_filter; }
5818 enabled coreimagesrc_filter && { check_header_objcc QuartzCore/CoreImage.h || disable coreimagesrc_filter; }
5819 enabled decklink          && { { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; } &&
5820                                { check_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a060100" || die "ERROR: Decklink API version must be >= 10.6.1."; } }
5821 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
5822 enabled gmp               && require gmp gmp.h mpz_export -lgmp
5823 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
5824 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads || die "ERROR: jni not found"; }
5825 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
5826 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5827 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
5828 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
5829 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
5830 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5831                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
5832                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5833 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
5834 enabled libdc1394         && require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new
5835 enabled libfdk_aac        && { use_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5836                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5837                                  warn "using libfdk without pkg-config"; } }
5838 flite_extralibs="-lflite_cmu_time_awb -lflite_cmu_us_awb -lflite_cmu_us_kal -lflite_cmu_us_kal16 -lflite_cmu_us_rms -lflite_cmu_us_slt -lflite_usenglish -lflite_cmulex -lflite"
5839 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
5840 enabled fontconfig        && enable libfontconfig
5841 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
5842 enabled libfreetype       && require_pkg_config freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
5843 enabled libfribidi        && require_pkg_config fribidi fribidi.h fribidi_version_info
5844 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
5845 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5846                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
5847                                done || die "ERROR: libgsm not found"; }
5848 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
5849 enabled libkvazaar        && require_pkg_config "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
5850 # While it may appear that require is being used as a pkg-config
5851 # fallback for libmfx, it is actually being used to detect a different
5852 # installation route altogether.  If libmfx is installed via the Intel
5853 # Media SDK or Intel Media Server Studio, these don't come with
5854 # pkg-config support.  Instead, users should make sure that the build
5855 # can find the libraries and headers through other means.
5856 enabled libmfx            && { use_pkg_config libmfx "mfx/mfxvideo.h" MFXInit ||
5857                                { require libmfx "mfx/mfxvideo.h" MFXInit -llibmfx && warn "using libmfx without pkg-config"; } }
5858 enabled libmodplug        && require_pkg_config libmodplug libmodplug/modplug.h ModPlug_Load
5859 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5860 enabled libmysofa         && require libmysofa "mysofa.h" mysofa_load -lmysofa
5861 enabled libnpp            && require libnpp npp.h nppGetLibVersion -lnppi -lnppc
5862 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5863 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5864 enabled libopencv         && { check_header opencv2/core/core_c.h &&
5865                                { use_pkg_config opencv opencv2/core/core_c.h cvCreateImageHeader ||
5866                                  require opencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
5867                                require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader; }
5868 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
5869 enabled libopenjpeg       && { { check_lib libopenjpeg openjpeg-2.2/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5870                                check_lib libopenjpeg openjpeg-2.2/openjpeg.h opj_version -lopenjp2 ||
5871                                { check_lib libopenjpeg openjpeg-2.1/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5872                                check_lib libopenjpeg openjpeg-2.1/openjpeg.h opj_version -lopenjp2 ||
5873                                { check_lib libopenjpeg openjpeg-2.0/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5874                                { check_lib libopenjpeg openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5875                                { check_lib libopenjpeg openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5876                                die "ERROR: libopenjpeg not found"; }
5877 enabled libopenmpt        && require_pkg_config "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create
5878 enabled libopus           && {
5879     enabled libopus_decoder && {
5880         require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
5881     }
5882     enabled libopus_encoder && {
5883         require_pkg_config opus opus_multistream.h opus_multistream_surround_encoder_create
5884     }
5885 }
5886 enabled libpulse          && require_pkg_config libpulse pulse/pulseaudio.h pa_context_new
5887 enabled librsvg           && require_pkg_config librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
5888 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
5889 enabled librubberband     && require_pkg_config "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new
5890 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
5891 enabled libsmbclient      && { use_pkg_config smbclient libsmbclient.h smbc_init ||
5892                                require smbclient libsmbclient.h smbc_init -lsmbclient; }
5893 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy
5894 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr && LIBSOXR="-lsoxr"
5895 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
5896 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
5897 enabled libtesseract      && require_pkg_config tesseract tesseract/capi.h TessBaseAPICreate
5898 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
5899 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
5900                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
5901                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
5902 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
5903 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
5904 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
5905 enabled libvorbis         && require_pkg_config vorbis vorbis/codec.h vorbis_info_init &&
5906                              require_pkg_config vorbisenc vorbis/vorbisenc.h vorbis_encode_init
5907
5908 enabled libvpx            && {
5909     enabled libvpx_vp8_decoder && {
5910         use_pkg_config "vpx >= 0.9.1" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
5911             check_lib libvpx_vp8_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
5912                 die "ERROR: libvpx decoder version must be >=0.9.1";
5913     }
5914     enabled libvpx_vp8_encoder && {
5915         use_pkg_config "vpx >= 0.9.7" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
5916             check_lib libvpx_vp8_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
5917                 die "ERROR: libvpx encoder version must be >=0.9.7";
5918     }
5919     enabled libvpx_vp9_decoder && {
5920         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
5921             check_lib libvpx_vp9_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx
5922     }
5923     enabled libvpx_vp9_encoder && {
5924         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
5925             check_lib libvpx_vp9_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx
5926     }
5927     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
5928         die "libvpx enabled but no supported decoders found"
5929     fi
5930 }
5931
5932 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
5933 enabled libwebp           && {
5934     enabled libwebp_encoder      && require_pkg_config "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
5935     enabled libwebp_anim_encoder && { use_pkg_config "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit || disable libwebp_anim_encoder; } }
5936 enabled libx264           && { use_pkg_config x264 "stdint.h x264.h" x264_encoder_encode ||
5937                                { require libx264 "stdint.h x264.h" x264_encoder_encode -lx264 &&
5938                                  warn "using libx264 without pkg-config"; } } &&
5939                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
5940                                die "ERROR: libx264 must be installed and version must be >= 0.118."; } &&
5941                              { check_cpp_condition x264.h "X264_MPEG2" &&
5942                                enable libx262; }
5943 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
5944                              { check_cpp_condition x265.h "X265_BUILD >= 68" ||
5945                                die "ERROR: libx265 version must be >= 68."; }
5946 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode -lxavs
5947 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
5948 enabled libzimg           && require_pkg_config "zimg >= 2.3.0" zimg.h zimg_get_api_version
5949 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
5950 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi &&
5951                              { check_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
5952                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
5953 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
5954 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
5955                                { ! enabled cross_compile &&
5956                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
5957                                  add_ldflags -L/opt/vc/lib/ &&
5958                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
5959                                die "ERROR: mmal not found" &&
5960                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
5961 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
5962                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
5963                                die "ERROR: openal not found"; } &&
5964                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
5965                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
5966 enabled opencl            && { check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
5967                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
5968                                die "ERROR: opencl not found"; } &&
5969                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
5970                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
5971                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
5972 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
5973                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
5974                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
5975                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
5976                                die "ERROR: opengl not found."
5977                              }
5978 enabled omx_rpi           && { check_header OMX_Core.h ||
5979                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_header OMX_Core.h ; } ||
5980                                die "ERROR: OpenMAX IL headers not found"; }
5981 enabled omx               && { check_header OMX_Core.h || die "ERROR: OpenMAX IL headers not found"; }
5982 enabled openssl           && { use_pkg_config openssl openssl/ssl.h OPENSSL_init_ssl ||
5983                                use_pkg_config openssl openssl/ssl.h SSL_library_init ||
5984                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
5985                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
5986                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
5987                                die "ERROR: openssl not found"; }
5988 enabled qtkit_indev      && { check_header_objcc QTKit/QTKit.h || disable qtkit_indev; }
5989
5990 if enabled gcrypt; then
5991     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
5992     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
5993         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
5994         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
5995         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
5996             die "ERROR: gcrypt not found"
5997         add_cflags $gcrypt_cflags && add_extralibs $gcrypt_extralibs
5998     else
5999         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
6000     fi
6001 fi
6002
6003 disabled sdl && disable sdl2
6004 if ! disabled sdl2; then
6005     SDL2_CONFIG="${cross_prefix}sdl2-config"
6006     if check_pkg_config sdl2 SDL_events.h SDL_PollEvent; then
6007         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6008         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6009         check_func SDL_Init $sdl2_extralibs $sdl2_cflags && enable sdl2
6010     else
6011       if "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6012         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6013         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6014         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6015         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6016         check_func SDL_Init $sdl2_extralibs $sdl2_cflags && enable sdl2
6017       fi
6018     fi
6019     if test $target_os = "mingw32"; then
6020         sdl2_extralibs="$sdl2_extralibs -mconsole"
6021     fi
6022 fi
6023 enabled sdl2 && enable sdl && add_cflags $sdl2_cflags && add_extralibs $sdl2_extralibs
6024
6025 if enabled decklink; then
6026     case $target_os in
6027         mingw32*|mingw64*|win32|win64)
6028             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6029             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6030             ;;
6031     esac
6032 fi
6033
6034 disabled securetransport || { check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6035     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext SecItemImport" "-Wl,-framework,CoreFoundation -Wl,-framework,Security"; }
6036
6037 disabled schannel || { check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6038                        check_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" && enable schannel && add_extralibs -lsecur32; }
6039
6040 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6041 enabled makeinfo \
6042     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6043     && enable makeinfo_html || disable makeinfo_html
6044 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6045 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6046 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6047 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6048
6049 check_header linux/fb.h
6050 check_header linux/videodev.h
6051 check_header linux/videodev2.h
6052 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
6053
6054 check_header sys/videoio.h
6055 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
6056
6057 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6058 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6059 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6060 # w32api 3.12 had it defined wrong
6061 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
6062
6063 check_type "dshow.h" IBaseFilter
6064
6065 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6066 { check_header dev/bktr/ioctl_meteor.h &&
6067   check_header dev/bktr/ioctl_bt848.h; } ||
6068 { check_header machine/ioctl_meteor.h &&
6069   check_header machine/ioctl_bt848.h; } ||
6070 { check_header dev/video/meteor/ioctl_meteor.h &&
6071   check_header dev/video/bktr/ioctl_bt848.h; } ||
6072 check_header dev/ic/bt8xx.h
6073
6074 if check_struct sys/soundcard.h audio_buf_info bytes; then
6075     enable_safe sys/soundcard.h
6076 else
6077     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
6078     #include <sys/soundcard.h>
6079     audio_buf_info abc;
6080 EOF
6081 fi
6082 check_header soundcard.h
6083
6084 enabled_any alsa_indev alsa_outdev &&
6085     check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
6086
6087 enabled jack_indev && check_lib jack jack/jack.h jack_client_open -ljack &&
6088     check_func jack_port_get_latency_range -ljack
6089
6090 enabled_any sndio_indev sndio_outdev && check_lib sndio sndio.h sio_open -lsndio
6091
6092 if enabled libcdio; then
6093     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6094     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6095     die "ERROR: No usable libcdio/cdparanoia found"
6096 fi
6097
6098 if ! disabled libxcb; then
6099     check_pkg_config "xcb >= 1.4" xcb/xcb.h xcb_connect || {
6100         enabled libxcb && die "ERROR: libxcb >= 1.4 not found";
6101     } && enable libxcb
6102
6103 if enabled libxcb; then
6104     disabled libxcb_shm || {
6105         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
6106             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
6107         } && check_header sys/shm.h && enable libxcb_shm; }
6108
6109     disabled libxcb_xfixes || {
6110         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
6111             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
6112         } && enable libxcb_xfixes; }
6113
6114     disabled libxcb_shape || {
6115         check_pkg_config xcb-shape xcb/shape.h xcb_shape_get_rectangles || {
6116             enabled libxcb_shape && die "ERROR: libxcb_shape not found";
6117         } && enable libxcb_shape; }
6118
6119     add_cflags $xcb_cflags $xcb_shm_cflags $xcb_xfixes_cflags $xcb_shape_cflags
6120     add_extralibs $xcb_extralibs $xcb_shm_extralibs $xcb_xfixes_extralibs $xcb_shape_extralibs
6121 fi
6122 fi
6123
6124 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6125
6126 # d3d11va requires linking directly to dxgi and d3d11 if not building for
6127 # the desktop api partition
6128 enabled LoadLibrary || d3d11va_extralibs="-ldxgi -ld3d11"
6129
6130 enabled vaapi &&
6131     check_lib vaapi va/va.h vaInitialize -lva
6132
6133 enabled vaapi &&
6134     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
6135     disable vaapi
6136
6137 enabled vaapi &&
6138     check_lib vaapi_drm "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm
6139
6140 enabled vaapi &&
6141     check_lib vaapi_x11 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 -lX11
6142
6143 enabled vdpau &&
6144     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
6145     disable vdpau
6146
6147 enabled vdpau &&
6148     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6149
6150 if enabled x86; then
6151     case $target_os in
6152         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6153             ;;
6154         *)
6155             disable cuda cuvid nvenc
6156             ;;
6157     esac
6158 else
6159     disable cuda cuvid nvenc
6160 fi
6161
6162 enabled nvenc &&
6163     check_cc -I$source_path <<EOF || disable nvenc
6164 #include "compat/nvenc/nvEncodeAPI.h"
6165 NV_ENCODE_API_FUNCTION_LIST flist;
6166 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6167 int main(void) { return 0; }
6168 EOF
6169
6170 # Funny iconv installations are not unusual, so check it after all flags have been set
6171 disabled iconv || check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6172
6173 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6174
6175 # add some useful compiler flags if supported
6176 check_cflags -Wdeclaration-after-statement
6177 check_cflags -Wall
6178 check_cflags -Wdisabled-optimization
6179 check_cflags -Wpointer-arith
6180 check_cflags -Wredundant-decls
6181 check_cflags -Wwrite-strings
6182 check_cflags -Wtype-limits
6183 check_cflags -Wundef
6184 check_cflags -Wmissing-prototypes
6185 check_cflags -Wno-pointer-to-int-cast
6186 check_cflags -Wstrict-prototypes
6187 check_cflags -Wempty-body
6188
6189 if enabled extra_warnings; then
6190     check_cflags -Wcast-qual
6191     check_cflags -Wextra
6192     check_cflags -Wpedantic
6193 fi
6194
6195 check_disable_warning(){
6196     warning_flag=-W${1#-Wno-}
6197     test_cflags $warning_flag && add_cflags $1
6198 }
6199
6200 check_disable_warning -Wno-parentheses
6201 check_disable_warning -Wno-switch
6202 check_disable_warning -Wno-format-zero-length
6203 check_disable_warning -Wno-pointer-sign
6204 check_disable_warning -Wno-unused-const-variable
6205
6206 check_disable_warning_headers(){
6207     warning_flag=-W${1#-Wno-}
6208     test_cflags $warning_flag && add_cflags_headers $1
6209 }
6210
6211 check_disable_warning_headers -Wno-deprecated-declarations
6212 check_disable_warning_headers -Wno-unused-variable
6213
6214 check_cc <<EOF && enable blocks_extension
6215 void (^block)(void);
6216 EOF
6217
6218 # add some linker flags
6219 check_ldflags -Wl,--warn-common
6220 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6221 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
6222 enabled rpath && add_ldlibflags -Wl,-rpath,$libdir
6223 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6224
6225 # add some strip flags
6226 check_stripflags -x
6227
6228 enabled neon_clobber_test &&
6229     check_ldflags -Wl,--wrap,avcodec_open2              \
6230                   -Wl,--wrap,avcodec_decode_audio4      \
6231                   -Wl,--wrap,avcodec_decode_video2      \
6232                   -Wl,--wrap,avcodec_decode_subtitle2   \
6233                   -Wl,--wrap,avcodec_encode_audio2      \
6234                   -Wl,--wrap,avcodec_encode_video2      \
6235                   -Wl,--wrap,avcodec_encode_subtitle    \
6236                   -Wl,--wrap,avcodec_send_packet        \
6237                   -Wl,--wrap,avcodec_receive_packet     \
6238                   -Wl,--wrap,avcodec_send_frame         \
6239                   -Wl,--wrap,avcodec_receive_frame      \
6240                   -Wl,--wrap,swr_convert                \
6241                   -Wl,--wrap,avresample_convert ||
6242     disable neon_clobber_test
6243
6244 enabled xmm_clobber_test &&
6245     check_ldflags -Wl,--wrap,avcodec_open2              \
6246                   -Wl,--wrap,avcodec_decode_audio4      \
6247                   -Wl,--wrap,avcodec_decode_video2      \
6248                   -Wl,--wrap,avcodec_decode_subtitle2   \
6249                   -Wl,--wrap,avcodec_encode_audio2      \
6250                   -Wl,--wrap,avcodec_encode_video2      \
6251                   -Wl,--wrap,avcodec_encode_subtitle    \
6252                   -Wl,--wrap,avcodec_send_packet        \
6253                   -Wl,--wrap,avcodec_receive_packet     \
6254                   -Wl,--wrap,avcodec_send_frame         \
6255                   -Wl,--wrap,avcodec_receive_frame      \
6256                   -Wl,--wrap,swr_convert                \
6257                   -Wl,--wrap,avresample_convert         \
6258                   -Wl,--wrap,sws_scale ||
6259     disable xmm_clobber_test
6260
6261 check_ld "cc" <<EOF && enable proper_dce
6262 extern const int array[512];
6263 static inline int func(void) { return array[0]; }
6264 int main(void) { return 0; }
6265 EOF
6266
6267 if enabled proper_dce; then
6268     echo "X { local: *; };" > $TMPV
6269     if test_ldflags -Wl,${version_script},$TMPV; then
6270         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6271         check_cc <<EOF && enable symver_asm_label
6272 void ff_foo(void) __asm__ ("av_foo@VERSION");
6273 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6274 EOF
6275         check_cc <<EOF && enable symver_gnu_asm
6276 __asm__(".symver ff_foo,av_foo@VERSION");
6277 void ff_foo(void) {}
6278 EOF
6279     fi
6280 fi
6281
6282 if [ -z "$optflags" ]; then
6283     if enabled small; then
6284         optflags=$cflags_size
6285     elif enabled optimizations; then
6286         optflags=$cflags_speed
6287     else
6288         optflags=$cflags_noopt
6289     fi
6290 fi
6291
6292 if [ -z "$nvccflags" ]; then
6293     nvccflags=$nvccflags_default
6294 fi
6295
6296 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6297     nvccflags="$nvccflags -m64"
6298 else
6299     nvccflags="$nvccflags -m32"
6300 fi
6301
6302 check_optflags(){
6303     check_cflags "$@"
6304     enabled lto && check_ldflags "$@"
6305 }
6306
6307 check_optflags $optflags
6308 check_optflags -fno-math-errno
6309 check_optflags -fno-signed-zeros
6310
6311 if enabled lto; then
6312     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6313     check_cflags  -flto
6314     check_ldflags -flto $cpuflags
6315     disable inline_asm_direct_symbol_refs
6316 fi
6317
6318 enabled ftrapv && check_cflags -ftrapv
6319
6320 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6321 int x;
6322 EOF
6323
6324
6325 if enabled icc; then
6326     # Just warnings, no remarks
6327     check_cflags -w1
6328     # -wd: Disable following warnings
6329     # 144, 167, 556: -Wno-pointer-sign
6330     # 188: enumerated type mixed with another type
6331     # 1292: attribute "foo" ignored
6332     # 1419: external declaration in primary source file
6333     # 10006: ignoring unknown option -fno-signed-zeros
6334     # 10148: ignoring unknown option -Wno-parentheses
6335     # 10156: ignoring option '-W'; no argument required
6336     # 13200: No EMMS instruction before call to function
6337     # 13203: No EMMS instruction before return from function
6338     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6339     # 11030: Warning unknown option --as-needed
6340     # 10156: ignoring option '-export'; no argument required
6341     check_ldflags -wd10156,11030
6342     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6343     enable ebp_available
6344     # The test above does not test linking
6345     enabled lto && disable symver_asm_label
6346     if enabled x86_32; then
6347         icc_version=$($cc -dumpversion)
6348         test ${icc_version%%.*} -ge 11 &&
6349             check_cflags -falign-stack=maintain-16-byte ||
6350             disable aligned_stack
6351     fi
6352 elif enabled ccc; then
6353     # disable some annoying warnings
6354     add_cflags -msg_disable bitnotint
6355     add_cflags -msg_disable mixfuncvoid
6356     add_cflags -msg_disable nonstandcast
6357     add_cflags -msg_disable unsupieee
6358 elif enabled gcc; then
6359     check_optflags -fno-tree-vectorize
6360     check_cflags -Werror=format-security
6361     check_cflags -Werror=implicit-function-declaration
6362     check_cflags -Werror=missing-prototypes
6363     check_cflags -Werror=return-type
6364     check_cflags -Werror=vla
6365     check_cflags -Wformat
6366     check_cflags -fdiagnostics-color=auto
6367     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6368 elif enabled llvm_gcc; then
6369     check_cflags -mllvm -stack-alignment=16
6370 elif enabled clang; then
6371     check_cflags -mllvm -stack-alignment=16
6372     check_cflags -mstack-alignment=16
6373     check_cflags -Qunused-arguments
6374     check_cflags -Werror=implicit-function-declaration
6375     check_cflags -Werror=missing-prototypes
6376     check_cflags -Werror=return-type
6377 elif enabled cparser; then
6378     add_cflags -Wno-missing-variable-declarations
6379     add_cflags -Wno-empty-statement
6380 elif enabled armcc; then
6381     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6382     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6383     # 2523: use of inline assembly is deprecated
6384     add_cflags -W${armcc_opt},--diag_suppress=2523
6385     add_cflags -W${armcc_opt},--diag_suppress=1207
6386     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6387     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6388     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6389     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6390 elif enabled tms470; then
6391     add_cflags -pds=824 -pds=837
6392     disable inline_asm
6393 elif enabled pathscale; then
6394     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6395 elif enabled_any msvc icl; then
6396     enabled x86_32 && disable aligned_stack
6397     enabled_all x86_32 debug && add_cflags -Oy-
6398     enabled debug && add_ldflags -debug
6399     enable pragma_deprecated
6400     if enabled icl; then
6401         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6402         # (correctly) on icl 13.x.
6403         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6404             add_cflags -Qansi-alias
6405         # Some inline asm is not compilable in debug
6406         if enabled debug; then
6407             disable ebp_available
6408             disable ebx_available
6409         fi
6410     fi
6411     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6412     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
6413     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6414     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6415     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6416     # MSVC 2013 and newer can handle it fine.
6417     # If this declspec fails, force including stdlib.h before the restrict redefinition
6418     # happens in config.h.
6419     if [ $_restrict != restrict ]; then
6420         check_cc <<EOF || add_cflags -FIstdlib.h
6421 __declspec($_restrict) void* foo(int);
6422 EOF
6423     fi
6424     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6425     # Issue has been fixed in MSVC v19.00.24218.
6426     check_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6427         check_cflags -d2SSAOptimizer-
6428     # enable utf-8 source processing on VS2015 U2 and newer
6429     check_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6430         add_cflags -utf-8
6431 fi
6432
6433 for pfx in "" host_; do
6434     varname=${pfx%_}cc_type
6435     eval "type=\$$varname"
6436     if [ "$type" = "msvc" ]; then
6437         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6438 static inline int foo(int a) { return a; }
6439 EOF
6440     fi
6441 done
6442
6443 case $as_type in
6444     clang)
6445         add_asflags -Qunused-arguments
6446     ;;
6447 esac
6448
6449 case $ld_type in
6450     clang)
6451         check_ldflags -Qunused-arguments
6452     ;;
6453 esac
6454
6455 case $target_os in
6456     osf1)
6457         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
6458     ;;
6459 esac
6460
6461 enable frame_thread_encoder
6462
6463 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6464
6465 check_deps $CONFIG_LIST       \
6466            $CONFIG_EXTRA      \
6467            $HAVE_LIST         \
6468            $ALL_COMPONENTS    \
6469
6470 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"
6471
6472
6473 if test $target_os = "haiku"; then
6474     disable memalign
6475     disable posix_memalign
6476 fi
6477
6478 # add_dep lib dep
6479 # -> enable ${lib}_deps_${dep}
6480 # -> add $dep to ${lib}_deps only once
6481 add_dep() {
6482     lib=$1
6483     dep=$2
6484     enabled "${lib}_deps_${dep}" && return 0
6485     enable  "${lib}_deps_${dep}"
6486     prepend "${lib}_deps" $dep
6487 }
6488
6489 # merge deps lib components
6490 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
6491 merge_deps() {
6492     lib=$1
6493     shift
6494     for comp in $*; do
6495         enabled $comp || continue
6496         eval "dep=\"\$${comp}_deps\""
6497         for d in $dep; do
6498             add_dep $lib $d
6499         done
6500     done
6501 }
6502
6503 merge_deps libavfilter $FILTER_LIST
6504
6505 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6506
6507 for thread in $THREADS_LIST; do
6508     if enabled $thread; then
6509         test -n "$thread_type" &&
6510             die "ERROR: Only one thread type must be selected." ||
6511             thread_type="$thread"
6512     fi
6513 done
6514
6515 if disabled stdatomic_h; then
6516     if enabled atomics_gcc; then
6517         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6518     elif enabled atomics_win32; then
6519         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6520     elif enabled atomics_suncc; then
6521         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6522     elif enabled pthreads; then
6523         add_compat atomics/pthread/stdatomic.o
6524         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6525     else
6526         enabled threads && die "Threading is enabled, but no atomics are available"
6527         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6528     fi
6529 fi
6530
6531 # Check if requested libraries were found.
6532 for lib in $AUTODETECT_LIBS; do
6533     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6534 done
6535
6536 enabled zlib && add_cppflags -DZLIB_CONST
6537
6538 # conditional library dependencies, in linking order
6539 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6540 enabled afir_filter         && prepend avfilter_deps "avcodec"
6541 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6542 enabled aresample_filter    && prepend avfilter_deps "swresample"
6543 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6544 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6545 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6546 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6547 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6548 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6549 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
6550 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6551 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6552 enabled pan_filter          && prepend avfilter_deps "swresample"
6553 enabled pp_filter           && prepend avfilter_deps "postproc"
6554 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6555 enabled resample_filter && prepend avfilter_deps "avresample"
6556 enabled sab_filter          && prepend avfilter_deps "swscale"
6557 enabled scale_filter    && prepend avfilter_deps "swscale"
6558 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6559 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6560 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6561 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6562 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6563 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
6564 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6565 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6566 enabled spp_filter          && prepend avfilter_deps "avcodec"
6567 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6568 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6569 enabled zoompan_filter      && prepend avfilter_deps "swscale"
6570
6571 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6572
6573 enabled opus_decoder    && prepend avcodec_deps "swresample"
6574
6575 expand_deps(){
6576     lib_deps=${1}_deps
6577     eval "deps=\$$lib_deps"
6578     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6579     unique $lib_deps
6580 }
6581
6582 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6583 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6584
6585 map 'expand_deps $v' $LIBRARY_LIST
6586
6587 license="LGPL version 2.1 or later"
6588 if enabled nonfree; then
6589     license="nonfree and unredistributable"
6590 elif enabled gplv3; then
6591     license="GPL version 3 or later"
6592 elif enabled lgplv3; then
6593     license="LGPL version 3 or later"
6594 elif enabled gpl; then
6595     license="GPL version 2 or later"
6596 fi
6597
6598 if test "$quiet" != "yes"; then
6599
6600 echo "install prefix            $prefix"
6601 echo "source path               $source_path"
6602 echo "C compiler                $cc"
6603 echo "C library                 $libc_type"
6604 if test "$host_cc" != "$cc"; then
6605     echo "host C compiler           $host_cc"
6606     echo "host C library            $host_libc_type"
6607 fi
6608 echo "ARCH                      $arch ($cpu)"
6609 if test "$build_suffix" != ""; then
6610     echo "build suffix              $build_suffix"
6611 fi
6612 if test "$progs_suffix" != ""; then
6613     echo "progs suffix              $progs_suffix"
6614 fi
6615 if test "$extra_version" != ""; then
6616     echo "version string suffix     $extra_version"
6617 fi
6618 echo "big-endian                ${bigendian-no}"
6619 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6620 if enabled x86; then
6621     echo "standalone assembly       ${x86asm-no}"
6622     echo "x86 assembler             ${x86asmexe}"
6623     echo "MMX enabled               ${mmx-no}"
6624     echo "MMXEXT enabled            ${mmxext-no}"
6625     echo "3DNow! enabled            ${amd3dnow-no}"
6626     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6627     echo "SSE enabled               ${sse-no}"
6628     echo "SSSE3 enabled             ${ssse3-no}"
6629     echo "AESNI enabled             ${aesni-no}"
6630     echo "AVX enabled               ${avx-no}"
6631     echo "XOP enabled               ${xop-no}"
6632     echo "FMA3 enabled              ${fma3-no}"
6633     echo "FMA4 enabled              ${fma4-no}"
6634     echo "i686 features enabled     ${i686-no}"
6635     echo "CMOV is fast              ${fast_cmov-no}"
6636     echo "EBX available             ${ebx_available-no}"
6637     echo "EBP available             ${ebp_available-no}"
6638 fi
6639 if enabled aarch64; then
6640     echo "NEON enabled              ${neon-no}"
6641     echo "VFP enabled               ${vfp-no}"
6642 fi
6643 if enabled arm; then
6644     echo "ARMv5TE enabled           ${armv5te-no}"
6645     echo "ARMv6 enabled             ${armv6-no}"
6646     echo "ARMv6T2 enabled           ${armv6t2-no}"
6647     echo "VFP enabled               ${vfp-no}"
6648     echo "NEON enabled              ${neon-no}"
6649     echo "THUMB enabled             ${thumb-no}"
6650 fi
6651 if enabled mips; then
6652     echo "MIPS FPU enabled          ${mipsfpu-no}"
6653     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6654     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6655     echo "MIPS MSA enabled          ${msa-no}"
6656     echo "LOONGSON MMI enabled      ${mmi-no}"
6657 fi
6658 if enabled ppc; then
6659     echo "AltiVec enabled           ${altivec-no}"
6660     echo "VSX enabled               ${vsx-no}"
6661     echo "POWER8 enabled            ${power8-no}"
6662     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6663     echo "dcbzl available           ${dcbzl-no}"
6664 fi
6665 echo "debug symbols             ${debug-no}"
6666 echo "strip symbols             ${stripping-no}"
6667 echo "optimize for size         ${small-no}"
6668 echo "optimizations             ${optimizations-no}"
6669 echo "static                    ${static-no}"
6670 echo "shared                    ${shared-no}"
6671 echo "postprocessing support    ${postproc-no}"
6672 echo "network support           ${network-no}"
6673 echo "threading support         ${thread_type-no}"
6674 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6675 echo "texi2html enabled         ${texi2html-no}"
6676 echo "perl enabled              ${perl-no}"
6677 echo "pod2man enabled           ${pod2man-no}"
6678 echo "makeinfo enabled          ${makeinfo-no}"
6679 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6680 test -n "$random_seed" &&
6681     echo "random seed               ${random_seed}"
6682 echo
6683
6684 echo "External libraries:"
6685 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_in_columns
6686 echo
6687
6688 echo "External libraries providing hardware acceleration:"
6689 print_enabled '' $HWACCEL_LIBRARY_LIST | print_in_columns
6690 echo
6691
6692 echo "Libraries:"
6693 print_enabled '' $LIBRARY_LIST | print_in_columns
6694 echo
6695
6696 echo "Programs:"
6697 print_enabled '' $PROGRAM_LIST | print_in_columns
6698 echo
6699
6700 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6701     echo "Enabled ${type}s:"
6702     eval list=\$$(toupper $type)_LIST
6703     print_enabled '_*' $list | print_in_columns
6704     echo
6705 done
6706
6707 if test -n "$ignore_tests"; then
6708     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
6709     echo "Ignored FATE tests:"
6710     echo $ignore_tests | print_in_columns
6711     echo
6712 fi
6713
6714 echo "License: $license"
6715
6716 echo "Creating configuration files ..."
6717
6718 fi # test "$quiet" != "yes"
6719
6720 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6721
6722 enabled stripping || strip="echo skipping strip"
6723
6724 config_files="$TMPH ffbuild/config.mak doc/config.texi"
6725
6726 cat > ffbuild/config.mak <<EOF
6727 # Automatically generated by configure - do not modify!
6728 ifndef FFMPEG_CONFIG_MAK
6729 FFMPEG_CONFIG_MAK=1
6730 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6731 prefix=$prefix
6732 LIBDIR=\$(DESTDIR)$libdir
6733 SHLIBDIR=\$(DESTDIR)$shlibdir
6734 INCDIR=\$(DESTDIR)$incdir
6735 BINDIR=\$(DESTDIR)$bindir
6736 DATADIR=\$(DESTDIR)$datadir
6737 DOCDIR=\$(DESTDIR)$docdir
6738 MANDIR=\$(DESTDIR)$mandir
6739 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6740 INSTALL_NAME_DIR=$install_name_dir
6741 SRC_PATH=$source_path
6742 SRC_LINK=$source_link
6743 ifndef MAIN_MAKEFILE
6744 SRC_PATH:=\$(SRC_PATH:.%=..%)
6745 endif
6746 CC_IDENT=$cc_ident
6747 ARCH=$arch
6748 INTRINSICS=$intrinsics
6749 CC=$cc
6750 CXX=$cxx
6751 AS=$as
6752 OBJCC=$objcc
6753 LD=$ld
6754 DEPCC=$dep_cc
6755 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6756 DEPAS=$as
6757 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6758 X86ASM=$x86asmexe
6759 DEPX86ASM=$x86asmexe
6760 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
6761 AR=$ar
6762 ARFLAGS=$arflags
6763 AR_O=$ar_o
6764 RANLIB=$ranlib
6765 STRIP=$strip
6766 NVCC=$nvcc
6767 CP=cp -p
6768 LN_S=$ln_s
6769 CPPFLAGS=$CPPFLAGS
6770 CFLAGS=$CFLAGS
6771 CXXFLAGS=$CXXFLAGS
6772 OBJCFLAGS=$OBJCFLAGS
6773 ASFLAGS=$ASFLAGS
6774 NVCCFLAGS=$nvccflags
6775 AS_C=$AS_C
6776 AS_O=$AS_O
6777 OBJCC_C=$OBJCC_C
6778 OBJCC_E=$OBJCC_E
6779 OBJCC_O=$OBJCC_O
6780 CC_C=$CC_C
6781 CC_E=$CC_E
6782 CC_O=$CC_O
6783 CXX_C=$CXX_C
6784 CXX_O=$CXX_O
6785 NVCC_C=$NVCC_C
6786 NVCC_O=$NVCC_O
6787 LD_O=$LD_O
6788 X86ASM_O=$X86ASM_O
6789 LD_LIB=$LD_LIB
6790 LD_PATH=$LD_PATH
6791 DLLTOOL=$dlltool
6792 WINDRES=$windres
6793 DEPWINDRES=$dep_cc
6794 DOXYGEN=$doxygen
6795 LDFLAGS=$LDFLAGS
6796 LDEXEFLAGS=$LDEXEFLAGS
6797 LDLIBFLAGS=$LDLIBFLAGS
6798 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
6799 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
6800 X86ASMFLAGS=$X86ASMFLAGS
6801 BUILDSUF=$build_suffix
6802 PROGSSUF=$progs_suffix
6803 FULLNAME=$FULLNAME
6804 LIBPREF=$LIBPREF
6805 LIBSUF=$LIBSUF
6806 LIBNAME=$LIBNAME
6807 SLIBPREF=$SLIBPREF
6808 SLIBSUF=$SLIBSUF
6809 EXESUF=$EXESUF
6810 EXTRA_VERSION=$extra_version
6811 CCDEP=$CCDEP
6812 CXXDEP=$CXXDEP
6813 CCDEP_FLAGS=$CCDEP_FLAGS
6814 ASDEP=$ASDEP
6815 ASDEP_FLAGS=$ASDEP_FLAGS
6816 X86ASMDEP=$X86ASMDEP
6817 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
6818 CC_DEPFLAGS=$CC_DEPFLAGS
6819 AS_DEPFLAGS=$AS_DEPFLAGS
6820 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
6821 HOSTCC=$host_cc
6822 HOSTLD=$host_ld
6823 HOSTCFLAGS=$host_cflags
6824 HOSTCPPFLAGS=$host_cppflags
6825 HOSTEXESUF=$HOSTEXESUF
6826 HOSTLDFLAGS=$host_ldflags
6827 HOSTEXTRALIBS=$host_extralibs
6828 DEPHOSTCC=$host_cc
6829 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
6830 HOSTCCDEP=$HOSTCCDEP
6831 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
6832 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
6833 HOSTCC_C=$HOSTCC_C
6834 HOSTCC_O=$HOSTCC_O
6835 HOSTLD_O=$HOSTLD_O
6836 TARGET_EXEC=$target_exec $target_exec_args
6837 TARGET_PATH=$target_path
6838 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
6839 CFLAGS-ffplay=${sdl2_cflags}
6840 CFLAGS_HEADERS=$CFLAGS_HEADERS
6841 ZLIB=$($ldflags_filter -lz)
6842 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
6843 EXTRALIBS=$extralibs
6844 COMPAT_OBJS=$compat_objs
6845 INSTALL=$install
6846 LIBTARGET=${LIBTARGET}
6847 SLIBNAME=${SLIBNAME}
6848 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
6849 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
6850 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
6851 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
6852 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
6853 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
6854 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
6855 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
6856 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
6857 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
6858 NOREDZONE_FLAGS=$noredzone_flags
6859 LIBFUZZER_PATH=$libfuzzer_path
6860 IGNORE_TESTS=$ignore_tests
6861 EOF
6862
6863 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
6864
6865 print_program_extralibs(){
6866     eval "program_extralibs=\$${1}_extralibs"
6867     eval echo "EXTRALIBS-${1}=${program_extralibs}" >> ffbuild/config.mak
6868 }
6869
6870 map 'print_program_extralibs $v' $PROGRAM_LIST
6871
6872 cat > $TMPH <<EOF
6873 /* Automatically generated by configure - do not modify! */
6874 #ifndef FFMPEG_CONFIG_H
6875 #define FFMPEG_CONFIG_H
6876 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
6877 #define FFMPEG_LICENSE "$(c_escape $license)"
6878 #define CONFIG_THIS_YEAR 2017
6879 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
6880 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
6881 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
6882 #define av_restrict $_restrict
6883 #define EXTERN_PREFIX "${extern_prefix}"
6884 #define EXTERN_ASM ${extern_prefix}
6885 #define BUILDSUF "$build_suffix"
6886 #define SLIBSUF "$SLIBSUF"
6887 #define HAVE_MMX2 HAVE_MMXEXT
6888 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
6889 EOF
6890
6891 test -n "$assert_level" &&
6892     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
6893
6894 test -n "$malloc_prefix" &&
6895     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
6896
6897 if enabled x86asm; then
6898     append config_files $TMPASM
6899     printf '' >$TMPASM
6900 fi
6901
6902 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
6903
6904
6905 mkdir -p doc
6906 mkdir -p tests
6907 mkdir -p tests/api
6908 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
6909
6910 print_config ARCH_   "$config_files" $ARCH_LIST
6911 print_config HAVE_   "$config_files" $HAVE_LIST
6912 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
6913                                      $CONFIG_EXTRA      \
6914                                      $ALL_COMPONENTS    \
6915
6916 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
6917 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
6918
6919 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
6920 cp_if_changed $TMPH config.h
6921 touch ffbuild/.config
6922
6923 enabled x86asm && cp_if_changed $TMPASM config.asm
6924
6925 cat > $TMPH <<EOF
6926 /* Generated by ffconf */
6927 #ifndef AVUTIL_AVCONFIG_H
6928 #define AVUTIL_AVCONFIG_H
6929 EOF
6930
6931 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
6932
6933 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
6934
6935 cp_if_changed $TMPH libavutil/avconfig.h
6936
6937 # generate the lists of enabled components
6938 print_enabled_components(){
6939     file=$1
6940     struct_name=$2
6941     name=$3
6942     shift 3
6943     echo "static const $struct_name *$name[] = {" > $TMPH
6944     for c in $*; do
6945         enabled $c && printf "    &ff_%s,\n" $c >> $TMPH
6946     done
6947     echo "    NULL };" >> $TMPH
6948     cp_if_changed $TMPH $file
6949 }
6950
6951 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
6952 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
6953
6954 if test -n "$WARNINGS"; then
6955     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
6956     enabled fatal_warnings && exit 1
6957 fi
6958
6959 # Settings for pkg-config files
6960
6961 cat > ffbuild/config.sh <<EOF
6962 # Automatically generated by configure - do not modify!
6963 shared=$shared
6964 build_suffix=$build_suffix
6965 prefix=$prefix
6966 libdir=$libdir
6967 incdir=$incdir
6968 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
6969 source_path=${source_path}
6970 LIBPREF=${LIBPREF}
6971 LIBSUF=${LIBSUF}
6972
6973 extralibs_avutil="$LIBRT $LIBM"
6974 extralibs_avcodec="$extralibs"
6975 extralibs_avformat="$extralibs"
6976 extralibs_avdevice="$extralibs"
6977 extralibs_avfilter="$extralibs"
6978 extralibs_avresample="$LIBM"
6979 extralibs_postproc=""
6980 extralibs_swscale="$LIBM"
6981 extralibs_swresample="$LIBM $LIBSOXR"
6982 EOF
6983
6984 for lib in $LIBRARY_LIST; do
6985     lib_deps="$(eval echo \$${lib}_deps)"
6986     echo ${lib}_deps=\"$lib_deps\" >> ffbuild/config.sh
6987 done