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-libvmaf         enable vmaf filter via libvmaf [no]
 260   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 261   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 262                            native implementation exists [no]
 263   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 264   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 265   --enable-libwebp         enable WebP encoding via libwebp [no]
 266   --enable-libx264         enable H.264 encoding via x264 [no]
 267   --enable-libx265         enable HEVC encoding via x265 [no]
 268   --enable-libxavs         enable AVS encoding via xavs [no]
 269   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
 270   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
 271   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
 272   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
 273   --enable-libxvid         enable Xvid encoding via xvidcore,
 274                            native MPEG-4/Xvid encoder exists [no]
 275   --enable-libzimg         enable z.lib, needed for zscale filter [no]
 276   --enable-libzmq          enable message passing via libzmq [no]
 277   --enable-libzvbi         enable teletext support via libzvbi [no]
 278   --disable-lzma           disable lzma [autodetect]
 279   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
 280   --enable-mediacodec      enable Android MediaCodec support [no]
 281   --enable-libmysofa       enable libmysofa, needed for sofalizer filter [no]
 282   --enable-openal          enable OpenAL 1.1 capture support [no]
 283   --enable-opencl          enable OpenCL code
 284   --enable-opengl          enable OpenGL rendering [no]
 285   --enable-openssl         enable openssl, needed for https support
 286                            if gnutls is not used [no]
 287   --disable-schannel       disable SChannel SSP, needed for TLS support on
 288                            Windows if openssl and gnutls are not used [autodetect]
 289   --disable-sdl2           disable sdl2 [autodetect]
 290   --disable-securetransport disable Secure Transport, needed for TLS support
 291                            on OSX if openssl and gnutls are not used [autodetect]
 292   --disable-xlib           disable xlib [autodetect]
 293   --disable-zlib           disable zlib [autodetect]
 294
 295   The following libraries provide various hardware acceleration features:
 296   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
 297   --disable-cuda           disable dynamically linked Nvidia CUDA code [autodetect]
 298   --enable-cuda-sdk        enable CUDA features that require the CUDA SDK [no]
 299   --disable-cuvid          disable Nvidia CUVID support [autodetect]
 300   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
 301   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
 302   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
 303   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
 304   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
 305   --disable-nvenc          disable Nvidia video encoding code [autodetect]
 306   --enable-omx             enable OpenMAX IL code [no]
 307   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
 308   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
 309   --disable-vda            disable Apple Video Decode Acceleration code [autodetect]
 310   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
 311   --disable-videotoolbox   disable VideoToolbox code [autodetect]
 312
 313 Toolchain options:
 314   --arch=ARCH              select architecture [$arch]
 315   --cpu=CPU                select the minimum required CPU (affects
 316                            instruction selection, may crash on older CPUs)
 317   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 318   --progs-suffix=SUFFIX    program name suffix []
 319   --enable-cross-compile   assume a cross-compiler is used
 320   --sysroot=PATH           root of cross-build tree
 321   --sysinclude=PATH        location of cross-build system headers
 322   --target-os=OS           compiler targets OS [$target_os]
 323   --target-exec=CMD        command to run executables on target
 324   --target-path=DIR        path to view of build directory on target
 325   --target-samples=DIR     path to samples directory on target
 326   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 327   --toolchain=NAME         set tool defaults according to NAME
 328   --nm=NM                  use nm tool NM [$nm_default]
 329   --ar=AR                  use archive tool AR [$ar_default]
 330   --as=AS                  use assembler AS [$as_default]
 331   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
 332   --strip=STRIP            use strip tool STRIP [$strip_default]
 333   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 334   --x86asmexe=EXE          use nasm-compatible assembler EXE [$x86asmexe_default]
 335   --cc=CC                  use C compiler CC [$cc_default]
 336   --cxx=CXX                use C compiler CXX [$cxx_default]
 337   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 338   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 339   --nvcc=NVCC              use Nvidia CUDA compiler NVCC [$nvcc_default]
 340   --ld=LD                  use linker LD [$ld_default]
 341   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 342   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 343   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 344   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 345   --host-cc=HOSTCC         use host C compiler HOSTCC
 346   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 347   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 348   --host-ld=HOSTLD         use host linker HOSTLD
 349   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 350   --host-libs=HLIBS        use libs HLIBS when linking for host
 351   --host-os=OS             compiler host OS [$target_os]
 352   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 353   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 354   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 355   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 356   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 357   --extra-ldlibflags=ELDFLAGS add ELDFLAGS to LDLIBFLAGS [$LDLIBFLAGS]
 358   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 359   --extra-version=STRING   version string suffix []
 360   --optflags=OPTFLAGS      override optimization-related compiler flags
 361   --nvccflags=NVCCFLAGS    override nvcc flags [$nvccflags_default]
 362   --build-suffix=SUFFIX    library name suffix []
 363   --enable-pic             build position-independent code
 364   --enable-thumb           compile for Thumb instruction set
 365   --enable-lto             use link-time optimization
 366   --env="ENV=override"     override the environment variables
 367
 368 Advanced options (experts only):
 369   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 370   --custom-allocator=NAME  use a supported custom allocator
 371   --disable-symver         disable symbol versioning
 372   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 373   --disable-safe-bitstream-reader
 374                            disable buffer boundary checking in bitreaders
 375                            (faster, but may crash)
 376   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 377
 378 Optimization options (experts only):
 379   --disable-asm            disable all assembly optimizations
 380   --disable-altivec        disable AltiVec optimizations
 381   --disable-vsx            disable VSX optimizations
 382   --disable-power8         disable POWER8 optimizations
 383   --disable-amd3dnow       disable 3DNow! optimizations
 384   --disable-amd3dnowext    disable 3DNow! extended optimizations
 385   --disable-mmx            disable MMX optimizations
 386   --disable-mmxext         disable MMXEXT optimizations
 387   --disable-sse            disable SSE optimizations
 388   --disable-sse2           disable SSE2 optimizations
 389   --disable-sse3           disable SSE3 optimizations
 390   --disable-ssse3          disable SSSE3 optimizations
 391   --disable-sse4           disable SSE4 optimizations
 392   --disable-sse42          disable SSE4.2 optimizations
 393   --disable-avx            disable AVX optimizations
 394   --disable-xop            disable XOP optimizations
 395   --disable-fma3           disable FMA3 optimizations
 396   --disable-fma4           disable FMA4 optimizations
 397   --disable-avx2           disable AVX2 optimizations
 398   --disable-aesni          disable AESNI optimizations
 399   --disable-armv5te        disable armv5te optimizations
 400   --disable-armv6          disable armv6 optimizations
 401   --disable-armv6t2        disable armv6t2 optimizations
 402   --disable-vfp            disable VFP optimizations
 403   --disable-neon           disable NEON optimizations
 404   --disable-inline-asm     disable use of inline assembly
 405   --disable-x86asm         disable use of standalone x86 assembly
 406   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
 407   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 408   --disable-msa            disable MSA optimizations
 409   --disable-mipsfpu        disable floating point MIPS optimizations
 410   --disable-mmi            disable Loongson SIMD optimizations
 411   --disable-fast-unaligned consider unaligned accesses slow
 412
 413 Developer options (useful when working on FFmpeg itself):
 414   --disable-debug          disable debugging symbols
 415   --enable-debug=LEVEL     set the debug level [$debuglevel]
 416   --disable-optimizations  disable compiler optimizations
 417   --enable-extra-warnings  enable more compiler warnings
 418   --disable-stripping      disable stripping of executables and shared libraries
 419   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 420                            2 causes a slowdown at runtime.
 421   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 422   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 423                            leaks and errors, using the specified valgrind binary.
 424                            Cannot be combined with --target-exec
 425   --enable-ftrapv          Trap arithmetic overflows
 426   --samples=PATH           location of test samples for FATE, if not set use
 427                            \$FATE_SAMPLES at make invocation time.
 428   --enable-neon-clobber-test check NEON registers for clobbering (should be
 429                            used only for debugging purposes)
 430   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 431                            should be used only for debugging purposes)
 432   --enable-random          randomly enable/disable components
 433   --disable-random
 434   --enable-random=LIST     randomly enable/disable specific components or
 435   --disable-random=LIST    component groups. LIST is a comma-separated list
 436                            of NAME[:PROB] entries where NAME is a component
 437                            (group) and PROB the probability associated with
 438                            NAME (default 0.5).
 439   --random-seed=VALUE      seed value for --enable/disable-random
 440   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 441                            (only applies to --disable-optimizations builds)
 442   --enable-osfuzz          Enable building fuzzer tool
 443   --libfuzzer=PATH         path to libfuzzer
 444   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
 445                            in the name) of tests whose result is ignored
 446
 447 NOTE: Object files are built at the place where configure is launched.
 448 EOF
 449   exit 0
 450 }
 451
 452 quotes='""'
 453 if test -t 1 && which tput >/dev/null 2>&1; then
 454     ncolors=$(tput colors)
 455     if test -n "$ncolors" && test $ncolors -ge 8; then
 456         bold_color=$(tput bold)
 457         warn_color=$(tput setaf 3)
 458         error_color=$(tput setaf 1)
 459         reset_color=$(tput sgr0)
 460     fi
 461     # 72 used instead of 80 since that's the default of pr
 462     ncols=$(tput cols)
 463 fi
 464 : ${ncols:=72}
 465
 466 log(){
 467     echo "$@" >> $logfile
 468 }
 469
 470 log_file(){
 471     log BEGIN $1
 472     pr -n -t $1 >> $logfile
 473     log END $1
 474 }
 475
 476 warn(){
 477     log "WARNING: $*"
 478     WARNINGS="${WARNINGS}WARNING: $*\n"
 479 }
 480
 481 die(){
 482     log "$@"
 483     echo "$error_color$bold_color$@$reset_color"
 484     cat <<EOF
 485
 486 If you think configure made a mistake, make sure you are using the latest
 487 version from Git.  If the latest version fails, report the problem to the
 488 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 489 EOF
 490     if disabled logging; then
 491         cat <<EOF
 492 Rerun configure with logging enabled (do not use --disable-logging), and
 493 include the log this produces with your report.
 494 EOF
 495     else
 496         cat <<EOF
 497 Include the log file "$logfile" produced by configure as this will help
 498 solve the problem.
 499 EOF
 500     fi
 501     exit 1
 502 }
 503
 504 # Avoid locale weirdness, besides we really just want to translate ASCII.
 505 toupper(){
 506     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 507 }
 508
 509 tolower(){
 510     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 511 }
 512
 513 c_escape(){
 514     echo "$*" | sed 's/["\\]/\\\0/g'
 515 }
 516
 517 sh_quote(){
 518     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 519     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 520     echo "$v"
 521 }
 522
 523 cleanws(){
 524     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 525 }
 526
 527 filter(){
 528     pat=$1
 529     shift
 530     for v; do
 531         eval "case $v in $pat) printf '%s ' $v ;; esac"
 532     done
 533 }
 534
 535 filter_out(){
 536     pat=$1
 537     shift
 538     for v; do
 539         eval "case $v in $pat) ;; *) printf '%s ' $v ;; esac"
 540     done
 541 }
 542
 543 map(){
 544     m=$1
 545     shift
 546     for v; do eval $m; done
 547 }
 548
 549 add_suffix(){
 550     suffix=$1
 551     shift
 552     for v; do echo ${v}${suffix}; done
 553 }
 554
 555 set_all(){
 556     value=$1
 557     shift
 558     for var in $*; do
 559         eval $var=$value
 560     done
 561 }
 562
 563 set_weak(){
 564     value=$1
 565     shift
 566     for var; do
 567         eval : \${$var:=$value}
 568     done
 569 }
 570
 571 sanitize_var_name(){
 572     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 573 }
 574
 575 set_safe(){
 576     var=$1
 577     shift
 578     eval $(sanitize_var_name "$var")='$*'
 579 }
 580
 581 get_safe(){
 582     eval echo \$$(sanitize_var_name "$1")
 583 }
 584
 585 pushvar(){
 586     for pvar in $*; do
 587         eval level=\${${pvar}_level:=0}
 588         eval ${pvar}_${level}="\$$pvar"
 589         eval ${pvar}_level=$(($level+1))
 590     done
 591 }
 592
 593 popvar(){
 594     for pvar in $*; do
 595         eval level=\${${pvar}_level:-0}
 596         test $level = 0 && continue
 597         eval level=$(($level-1))
 598         eval $pvar="\${${pvar}_${level}}"
 599         eval ${pvar}_level=$level
 600         eval unset ${pvar}_${level}
 601     done
 602 }
 603
 604 request(){
 605     for var in $*; do
 606         eval ${var}_requested=yes
 607         eval $var=
 608     done
 609 }
 610
 611 enable(){
 612     set_all yes $*
 613 }
 614
 615 disable(){
 616     set_all no $*
 617 }
 618
 619 enable_weak(){
 620     set_weak yes $*
 621 }
 622
 623 disable_weak(){
 624     set_weak no $*
 625 }
 626
 627 enable_safe(){
 628     for var; do
 629         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 630     done
 631 }
 632
 633 disable_safe(){
 634     for var; do
 635         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 636     done
 637 }
 638
 639 do_enable_deep(){
 640     for var; do
 641         enabled $var && continue
 642         eval sel="\$${var}_select"
 643         eval sgs="\$${var}_suggest"
 644         pushvar var sgs
 645         enable_deep $sel
 646         popvar sgs
 647         enable_deep_weak $sgs
 648         popvar var
 649     done
 650 }
 651
 652 enable_deep(){
 653     do_enable_deep $*
 654     enable $*
 655 }
 656
 657 enable_deep_weak(){
 658     for var; do
 659         disabled $var && continue
 660         pushvar var
 661         do_enable_deep $var
 662         popvar var
 663         enable_weak $var
 664     done
 665 }
 666
 667 requested(){
 668     test "${1#!}" = "$1" && op='=' || op=!=
 669     eval test "x\$${1#!}_requested" $op "xyes"
 670 }
 671
 672 enabled(){
 673     test "${1#!}" = "$1" && op='=' || op=!=
 674     eval test "x\$${1#!}" $op "xyes"
 675 }
 676
 677 disabled(){
 678     test "${1#!}" = "$1" && op='=' || op=!=
 679     eval test "x\$${1#!}" $op "xno"
 680 }
 681
 682 enabled_all(){
 683     for opt; do
 684         enabled $opt || return 1
 685     done
 686 }
 687
 688 disabled_all(){
 689     for opt; do
 690         disabled $opt || return 1
 691     done
 692 }
 693
 694 enabled_any(){
 695     for opt; do
 696         enabled $opt && return 0
 697     done
 698 }
 699
 700 disabled_any(){
 701     for opt; do
 702         disabled $opt && return 0
 703     done
 704     return 1
 705 }
 706
 707 set_default(){
 708     for opt; do
 709         eval : \${$opt:=\$${opt}_default}
 710     done
 711 }
 712
 713 is_in(){
 714     value=$1
 715     shift
 716     for var in $*; do
 717         [ $var = $value ] && return 0
 718     done
 719     return 1
 720 }
 721
 722 do_check_deps(){
 723     for cfg; do
 724         cfg="${cfg#!}"
 725         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 726         disabled ${cfg}_checking && continue
 727         enable ${cfg}_checking
 728         append allopts $cfg
 729
 730         eval dep_all="\$${cfg}_deps"
 731         eval dep_any="\$${cfg}_deps_any"
 732         eval dep_sel="\$${cfg}_select"
 733         eval dep_sgs="\$${cfg}_suggest"
 734         eval dep_ifa="\$${cfg}_if"
 735         eval dep_ifn="\$${cfg}_if_any"
 736
 737         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 738         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
 739         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 740
 741         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 742         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 743         enabled_all  $dep_all || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not all dependencies are satisfied: $dep_all"; }
 744         enabled_any  $dep_any || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not any dependency is satisfied: $dep_any"; }
 745         disabled_any $dep_sel && { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some selected dependency is unsatisfied: $dep_sel"; }
 746
 747         if enabled $cfg; then
 748             enable_deep $dep_sel
 749             enable_deep_weak $dep_sgs
 750         fi
 751
 752         disable ${cfg}_checking
 753     done
 754 }
 755
 756 check_deps(){
 757     unset allopts
 758
 759     do_check_deps "$@"
 760
 761     for cfg in $allopts; do
 762         enabled $cfg || continue
 763         eval dep_extralibs="\$${cfg}_extralibs"
 764         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
 765     done
 766 }
 767
 768 print_config(){
 769     pfx=$1
 770     files=$2
 771     shift 2
 772     map 'eval echo "$v \${$v:-no}"' "$@" |
 773     awk "BEGIN { split(\"$files\", files) }
 774         {
 775             c = \"$pfx\" toupper(\$1);
 776             v = \$2;
 777             sub(/yes/, 1, v);
 778             sub(/no/,  0, v);
 779             for (f in files) {
 780                 file = files[f];
 781                 if (file ~ /\\.h\$/) {
 782                     printf(\"#define %s %d\\n\", c, v) >>file;
 783                 } else if (file ~ /\\.asm\$/) {
 784                     printf(\"%%define %s %d\\n\", c, v) >>file;
 785                 } else if (file ~ /\\.mak\$/) {
 786                     n = -v ? \"\" : \"!\";
 787                     printf(\"%s%s=yes\\n\", n, c) >>file;
 788                 } else if (file ~ /\\.texi\$/) {
 789                     pre = -v ? \"\" : \"@c \";
 790                     yesno = \$2;
 791                     c2 = tolower(c);
 792                     gsub(/_/, \"-\", c2);
 793                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 794                 }
 795             }
 796         }"
 797 }
 798
 799 print_enabled(){
 800     suf=$1
 801     shift
 802     for v; do
 803         enabled $v && printf "%s\n" ${v%$suf}
 804     done
 805 }
 806
 807 append(){
 808     var=$1
 809     shift
 810     eval "$var=\"\$$var $*\""
 811 }
 812
 813 prepend(){
 814     var=$1
 815     shift
 816     eval "$var=\"$* \$$var\""
 817 }
 818
 819 unique(){
 820     var=$1
 821     uniq_list=""
 822     for tok in $(eval echo \$$var); do
 823         uniq_list="$(filter_out $tok $uniq_list) $tok"
 824     done
 825     eval "$var=\"${uniq_list}\""
 826 }
 827
 828 add_cppflags(){
 829     append CPPFLAGS "$@"
 830 }
 831
 832 add_cflags(){
 833     append CFLAGS $($cflags_filter "$@")
 834 }
 835
 836 add_cflags_headers(){
 837     append CFLAGS_HEADERS $($cflags_filter "$@")
 838 }
 839
 840 add_cxxflags(){
 841     append CXXFLAGS $($cflags_filter "$@")
 842 }
 843
 844 add_asflags(){
 845     append ASFLAGS $($asflags_filter "$@")
 846 }
 847
 848 add_objcflags(){
 849     append OBJCFLAGS $($objcflags_filter "$@")
 850 }
 851
 852 add_ldflags(){
 853     append LDFLAGS $($ldflags_filter "$@")
 854 }
 855
 856 add_ldexeflags(){
 857     append LDEXEFLAGS $($ldflags_filter "$@")
 858 }
 859
 860 add_ldlibflags(){
 861     append LDLIBFLAGS $($ldflags_filter "$@")
 862 }
 863
 864 add_stripflags(){
 865     append ASMSTRIPFLAGS "$@"
 866 }
 867
 868 add_extralibs(){
 869     prepend extralibs $($ldflags_filter "$@")
 870 }
 871
 872 add_host_cppflags(){
 873     append host_cppflags "$@"
 874 }
 875
 876 add_host_cflags(){
 877     append host_cflags $($host_cflags_filter "$@")
 878 }
 879
 880 add_host_ldflags(){
 881     append host_ldflags $($host_ldflags_filter "$@")
 882 }
 883
 884 add_compat(){
 885     append compat_objs $1
 886     shift
 887     map 'add_cppflags -D$v' "$@"
 888 }
 889
 890 check_cmd(){
 891     log "$@"
 892     "$@" >> $logfile 2>&1
 893 }
 894
 895 check_stat(){
 896     log check_stat "$@"
 897     stat "$1" >> $logfile 2>&1
 898 }
 899
 900 cc_o(){
 901     eval printf '%s\\n' $CC_O
 902 }
 903
 904 cc_e(){
 905     eval printf '%s\\n' $CC_E
 906 }
 907
 908 check_cc(){
 909     log check_cc "$@"
 910     cat > $TMPC
 911     log_file $TMPC
 912     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 913 }
 914
 915 check_cxx(){
 916     log check_cxx "$@"
 917     cat > $TMPCPP
 918     log_file $TMPCPP
 919     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 920 }
 921
 922 check_objcc(){
 923     log check_objcc "$@"
 924     cat > $TMPM
 925     log_file $TMPM
 926     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
 927 }
 928
 929 check_cpp(){
 930     log check_cpp "$@"
 931     cat > $TMPC
 932     log_file $TMPC
 933     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 934 }
 935
 936 as_o(){
 937     eval printf '%s\\n' $AS_O
 938 }
 939
 940 check_as(){
 941     log check_as "$@"
 942     cat > $TMPS
 943     log_file $TMPS
 944     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 945 }
 946
 947 check_inline_asm(){
 948     log check_inline_asm "$@"
 949     name="$1"
 950     code="$2"
 951     shift 2
 952     disable $name
 953     check_cc "$@" <<EOF && enable $name
 954 void foo(void){ __asm__ volatile($code); }
 955 EOF
 956 }
 957
 958 check_inline_asm_flags(){
 959     log check_inline_asm_flags "$@"
 960     name="$1"
 961     code="$2"
 962     flags=''
 963     shift 2
 964     while [ "$1" != "" ]; do
 965       append flags $1
 966       shift
 967     done;
 968     disable $name
 969     cat > $TMPC <<EOF
 970 void foo(void){ __asm__ volatile($code); }
 971 EOF
 972     log_file $TMPC
 973     check_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
 974     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
 975 }
 976
 977 check_insn(){
 978     log check_insn "$@"
 979     check_inline_asm ${1}_inline "\"$2\""
 980     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 981 }
 982
 983 check_x86asm(){
 984     log check_x86asm "$@"
 985     echo "$1" > $TMPS
 986     log_file $TMPS
 987     shift 1
 988     check_cmd $x86asmexe $X86ASMFLAGS -Werror "$@" -o $TMPO $TMPS
 989 }
 990
 991 ld_o(){
 992     eval printf '%s\\n' $LD_O
 993 }
 994
 995 check_ld(){
 996     log check_ld "$@"
 997     type=$1
 998     shift 1
 999     flags=$(filter_out '-l*|*.so' $@)
1000     libs=$(filter '-l*|*.so' $@)
1001     check_$type $($cflags_filter $flags) || return
1002     flags=$($ldflags_filter $flags)
1003     libs=$($ldflags_filter $libs)
1004     check_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1005 }
1006
1007 print_include(){
1008     hdr=$1
1009     test "${hdr%.h}" = "${hdr}" &&
1010         echo "#include $hdr"    ||
1011         echo "#include <$hdr>"
1012 }
1013
1014 check_code(){
1015     log check_code "$@"
1016     check=$1
1017     headers=$2
1018     code=$3
1019     shift 3
1020     {
1021         for hdr in $headers; do
1022             print_include $hdr
1023         done
1024         echo "int main(void) { $code; return 0; }"
1025     } | check_$check "$@"
1026 }
1027
1028 check_cppflags(){
1029     log check_cppflags "$@"
1030     check_cpp "$@" <<EOF && append CPPFLAGS "$@"
1031 int x;
1032 EOF
1033 }
1034
1035 test_cflags(){
1036     log test_cflags "$@"
1037     set -- $($cflags_filter "$@")
1038     check_cc "$@" <<EOF
1039 int x;
1040 EOF
1041 }
1042
1043 check_cflags(){
1044     log check_cflags "$@"
1045     test_cflags "$@" && add_cflags "$@"
1046 }
1047
1048 check_cxxflags(){
1049     log check_cxxflags "$@"
1050     set -- $($cflags_filter "$@")
1051     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
1052 int x;
1053 EOF
1054 }
1055
1056 test_objcflags(){
1057     log test_objcflags "$@"
1058     set -- $($objcflags_filter "$@")
1059     check_objcc "$@" <<EOF
1060 int x;
1061 EOF
1062 }
1063
1064 check_objcflags(){
1065     log check_objcflags "$@"
1066     test_objcflags "$@" && add_objcflags "$@"
1067 }
1068
1069 test_ldflags(){
1070     log test_ldflags "$@"
1071     check_ld "cc" "$@" <<EOF
1072 int main(void){ return 0; }
1073 EOF
1074 }
1075
1076 check_ldflags(){
1077     log check_ldflags "$@"
1078     test_ldflags "$@" && add_ldflags "$@"
1079 }
1080
1081 test_stripflags(){
1082     log test_stripflags "$@"
1083     # call check_cc to get a fresh TMPO
1084     check_cc <<EOF
1085 int main(void) { return 0; }
1086 EOF
1087     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1088 }
1089
1090 check_stripflags(){
1091     log check_stripflags "$@"
1092     test_stripflags "$@" && add_stripflags "$@"
1093 }
1094
1095 check_header(){
1096     log check_header "$@"
1097     header=$1
1098     shift
1099     disable_safe $header
1100     check_cpp "$@" <<EOF && enable_safe $header
1101 #include <$header>
1102 int x;
1103 EOF
1104 }
1105
1106 check_header_objcc(){
1107     log check_header_objcc "$@"
1108     rm -f -- "$TMPO"
1109     header=$1
1110     shift
1111     disable_safe $header
1112     {
1113        echo "#include <$header>"
1114        echo "int main(void) { return 0; }"
1115     } | check_objcc && check_stat "$TMPO" && enable_safe $headers
1116 }
1117
1118 check_func(){
1119     log check_func "$@"
1120     func=$1
1121     shift
1122     disable $func
1123     check_ld "cc" "$@" <<EOF && enable $func
1124 extern int $func();
1125 int main(void){ $func(); }
1126 EOF
1127 }
1128
1129 check_complexfunc(){
1130     log check_complexfunc "$@"
1131     func=$1
1132     narg=$2
1133     shift 2
1134     test $narg = 2 && args="f, g" || args="f * I"
1135     disable $func
1136     check_ld "cc" "$@" <<EOF && enable $func
1137 #include <complex.h>
1138 #include <math.h>
1139 float foo(complex float f, complex float g) { return $func($args); }
1140 int main(void){ return (int) foo; }
1141 EOF
1142 }
1143
1144 check_mathfunc(){
1145     log check_mathfunc "$@"
1146     func=$1
1147     narg=$2
1148     shift 2
1149     test $narg = 2 && args="f, g" || args="f"
1150     disable $func
1151     check_ld "cc" "$@" <<EOF && enable $func
1152 #include <math.h>
1153 float foo(float f, float g) { return $func($args); }
1154 int main(void){ return (int) foo; }
1155 EOF
1156 }
1157
1158 check_func_headers(){
1159     log check_func_headers "$@"
1160     headers=$1
1161     funcs=$2
1162     shift 2
1163     {
1164         for hdr in $headers; do
1165             print_include $hdr
1166         done
1167         echo "#include <stdint.h>"
1168         for func in $funcs; do
1169             echo "long check_$func(void) { return (long) $func; }"
1170         done
1171         echo "int main(void) { int ret = 0;"
1172         # LTO could optimize out the test functions without this
1173         for func in $funcs; do
1174             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1175         done
1176         echo "return ret; }"
1177     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1178 }
1179
1180 check_class_headers_cpp(){
1181     log check_class_headers_cpp "$@"
1182     headers=$1
1183     classes=$2
1184     shift 2
1185     {
1186         for hdr in $headers; do
1187             echo "#include <$hdr>"
1188         done
1189         echo "int main(void) { "
1190         i=1
1191         for class in $classes; do
1192             echo "$class obj$i;"
1193             i=$(expr $i + 1)
1194         done
1195         echo "return 0; }"
1196     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1197 }
1198
1199 check_cpp_condition(){
1200     log check_cpp_condition "$@"
1201     header=$1
1202     condition=$2
1203     shift 2
1204     check_cpp "$@" <<EOF
1205 #include <$header>
1206 #if !($condition)
1207 #error "unsatisfied condition: $condition"
1208 #endif
1209 EOF
1210 }
1211
1212 test_cflags_cc(){
1213     log test_cflags_cc "$@"
1214     flags=$1
1215     header=$2
1216     condition=$3
1217     shift 3
1218     set -- $($cflags_filter "$flags")
1219     check_cc "$@" <<EOF
1220 #include <$header>
1221 #if !($condition)
1222 #error "unsatisfied condition: $condition"
1223 #endif
1224 EOF
1225 }
1226
1227 check_lib(){
1228     log check_lib "$@"
1229     name="$1"
1230     headers="$2"
1231     funcs="$3"
1232     shift 3
1233     disable $name
1234     check_func_headers "$headers" "$funcs" "$@" &&
1235         enable $name && add_extralibs "$@"
1236 }
1237
1238 check_lib_cpp(){
1239     log check_lib_cpp "$@"
1240     headers="$1"
1241     classes="$2"
1242     shift 2
1243     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1244 }
1245
1246 check_pkg_config(){
1247     log check_pkg_config "$@"
1248     pkg_version="$1"
1249     pkg="${1%% *}"
1250     headers="$2"
1251     funcs="$3"
1252     shift 3
1253     check_cmd $pkg_config --exists --print-errors $pkg_version || return
1254     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1255     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1256     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1257         set_safe "${pkg}_cflags"    $pkg_cflags &&
1258         set_safe "${pkg}_extralibs" $pkg_libs
1259 }
1260
1261 check_exec(){
1262     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1263 }
1264
1265 check_exec_crash(){
1266     log check_exec_crash "$@"
1267     code=$(cat)
1268
1269     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1270     # are safe but may not be available everywhere.  Thus we use
1271     # raise(SIGTERM) instead.  The check is run in a subshell so we
1272     # can redirect the "Terminated" message from the shell.  SIGBUS
1273     # is not defined by standard C so it is used conditionally.
1274
1275     (check_exec "$@") >> $logfile 2>&1 <<EOF
1276 #include <signal.h>
1277 static void sighandler(int sig){
1278     raise(SIGTERM);
1279 }
1280 int foo(void){
1281     $code
1282 }
1283 int (*func_ptr)(void) = foo;
1284 int main(void){
1285     signal(SIGILL, sighandler);
1286     signal(SIGFPE, sighandler);
1287     signal(SIGSEGV, sighandler);
1288 #ifdef SIGBUS
1289     signal(SIGBUS, sighandler);
1290 #endif
1291     return func_ptr();
1292 }
1293 EOF
1294 }
1295
1296 check_type(){
1297     log check_type "$@"
1298     headers=$1
1299     type=$2
1300     shift 2
1301     disable_safe "$type"
1302     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1303 }
1304
1305 check_struct(){
1306     log check_struct "$@"
1307     headers=$1
1308     struct=$2
1309     member=$3
1310     shift 3
1311     disable_safe "${struct}_${member}"
1312     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1313         enable_safe "${struct}_${member}"
1314 }
1315
1316 check_builtin(){
1317     log check_builtin "$@"
1318     name=$1
1319     headers=$2
1320     builtin=$3
1321     shift 3
1322     disable "$name"
1323     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1324 }
1325
1326 check_compile_assert(){
1327     log check_compile_assert "$@"
1328     name=$1
1329     headers=$2
1330     condition=$3
1331     shift 3
1332     disable "$name"
1333     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1334 }
1335
1336 require(){
1337     log require "$@"
1338     name_version="$1"
1339     name="${1%% *}"
1340     headers="$2"
1341     func="$3"
1342     shift 3
1343     check_lib $name "$headers" $func "$@" || die "ERROR: $name_version not found"
1344 }
1345
1346 require_cpp(){
1347     name="$1"
1348     headers="$2"
1349     classes="$3"
1350     shift 3
1351     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1352 }
1353
1354 use_pkg_config(){
1355     log use_pkg_config "$@"
1356     pkg="$1"
1357     check_pkg_config "$@" || return 1
1358     add_cflags    $(get_safe "${pkg}_cflags")
1359     add_extralibs $(get_safe "${pkg}_extralibs")
1360 }
1361
1362 require_pkg_config(){
1363     use_pkg_config "$@" || die "ERROR: $pkg not found using pkg-config$pkg_config_fail_message"
1364 }
1365
1366 hostcc_e(){
1367     eval printf '%s\\n' $HOSTCC_E
1368 }
1369
1370 hostcc_o(){
1371     eval printf '%s\\n' $HOSTCC_O
1372 }
1373
1374 check_host_cc(){
1375     log check_host_cc "$@"
1376     cat > $TMPC
1377     log_file $TMPC
1378     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1379 }
1380
1381 check_host_cpp(){
1382     log check_host_cpp "$@"
1383     cat > $TMPC
1384     log_file $TMPC
1385     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1386 }
1387
1388 check_host_cppflags(){
1389     log check_host_cppflags "$@"
1390     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1391 int x;
1392 EOF
1393 }
1394
1395 check_host_cflags(){
1396     log check_host_cflags "$@"
1397     set -- $($host_cflags_filter "$@")
1398     check_host_cc "$@" <<EOF && append host_cflags "$@"
1399 int x;
1400 EOF
1401 }
1402
1403 check_host_cpp_condition(){
1404     log check_host_cpp_condition "$@"
1405     header=$1
1406     condition=$2
1407     shift 2
1408     check_host_cpp "$@" <<EOF
1409 #include <$header>
1410 #if !($condition)
1411 #error "unsatisfied condition: $condition"
1412 #endif
1413 EOF
1414 }
1415
1416 cp_if_changed(){
1417     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1418     mkdir -p "$(dirname $2)"
1419     cp -f "$1" "$2"
1420 }
1421
1422 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1423 # system-dependent things.
1424
1425 AVCODEC_COMPONENTS="
1426     bsfs
1427     decoders
1428     encoders
1429     hwaccels
1430     parsers
1431 "
1432
1433 AVDEVICE_COMPONENTS="
1434     indevs
1435     outdevs
1436 "
1437 AVFILTER_COMPONENTS="
1438     filters
1439 "
1440 AVFORMAT_COMPONENTS="
1441     demuxers
1442     muxers
1443     protocols
1444 "
1445
1446 AVRESAMPLE_COMPONENTS=""
1447 AVUTIL_COMPONENTS=""
1448
1449 COMPONENT_LIST="
1450     $AVCODEC_COMPONENTS
1451     $AVDEVICE_COMPONENTS
1452     $AVFILTER_COMPONENTS
1453     $AVFORMAT_COMPONENTS
1454     $AVRESAMPLE_COMPONENTS
1455     $AVUTIL_COMPONENTS
1456 "
1457
1458 EXAMPLE_LIST="
1459     avio_dir_cmd_example
1460     avio_reading_example
1461     decode_audio_example
1462     decode_video_example
1463     demuxing_decoding_example
1464     encode_audio_example
1465     encode_video_example
1466     extract_mvs_example
1467     filter_audio_example
1468     filtering_audio_example
1469     filtering_video_example
1470     http_multiclient_example
1471     hw_decode_example
1472     metadata_example
1473     muxing_example
1474     qsvdec_example
1475     remuxing_example
1476     resampling_audio_example
1477     scaling_video_example
1478     transcode_aac_example
1479     transcoding_example
1480 "
1481 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1482     bzlib
1483     iconv
1484     libxcb
1485     libxcb_shm
1486     libxcb_shape
1487     libxcb_xfixes
1488     lzma
1489     schannel
1490     sdl
1491     sdl2
1492     securetransport
1493     xlib
1494     zlib
1495 "
1496
1497 EXTERNAL_LIBRARY_GPL_LIST="
1498     avisynth
1499     frei0r
1500     libcdio
1501     librubberband
1502     libvidstab
1503     libx264
1504     libx265
1505     libxavs
1506     libxvid
1507 "
1508
1509 EXTERNAL_LIBRARY_NONFREE_LIST="
1510     decklink
1511     libfdk_aac
1512     openssl
1513 "
1514
1515 EXTERNAL_LIBRARY_VERSION3_LIST="
1516     gmp
1517     libopencore_amrnb
1518     libopencore_amrwb
1519     libvo_amrwbenc
1520 "
1521
1522 EXTERNAL_LIBRARY_GPLV3_LIST="
1523     libsmbclient
1524 "
1525
1526 EXTERNAL_LIBRARY_LIST="
1527     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1528     $EXTERNAL_LIBRARY_GPL_LIST
1529     $EXTERNAL_LIBRARY_NONFREE_LIST
1530     $EXTERNAL_LIBRARY_VERSION3_LIST
1531     $EXTERNAL_LIBRARY_GPLV3_LIST
1532     chromaprint
1533     crystalhd
1534     gcrypt
1535     gnutls
1536     jni
1537     ladspa
1538     libass
1539     libbluray
1540     libbs2b
1541     libcaca
1542     libcelt
1543     libdc1394
1544     libflite
1545     libfontconfig
1546     libfreetype
1547     libfribidi
1548     libgme
1549     libgsm
1550     libiec61883
1551     libilbc
1552     libkvazaar
1553     libmodplug
1554     libmp3lame
1555     libmysofa
1556     libopencv
1557     libopenh264
1558     libopenjpeg
1559     libopenmpt
1560     libopus
1561     libpulse
1562     librsvg
1563     librtmp
1564     libshine
1565     libsmbclient
1566     libsnappy
1567     libsoxr
1568     libspeex
1569     libssh
1570     libtesseract
1571     libtheora
1572     libtwolame
1573     libv4l2
1574     libvmaf
1575     libvorbis
1576     libvpx
1577     libwavpack
1578     libwebp
1579     libzimg
1580     libzmq
1581     libzvbi
1582     mediacodec
1583     openal
1584     opencl
1585     opengl
1586     videotoolbox
1587 "
1588 HWACCEL_AUTODETECT_LIBRARY_LIST="
1589     audiotoolbox
1590     cuda
1591     cuvid
1592     d3d11va
1593     dxva2
1594     nvenc
1595     vaapi
1596     vda
1597     vdpau
1598     videotoolbox_hwaccel
1599     xvmc
1600 "
1601
1602 HWACCEL_LIBRARY_NONFREE_LIST="
1603     cuda_sdk
1604     libnpp
1605 "
1606
1607 HWACCEL_LIBRARY_LIST="
1608     $HWACCEL_AUTODETECT_LIBRARY_LIST
1609     $HWACCEL_LIBRARY_NONFREE_LIST
1610     libmfx
1611     mmal
1612     omx
1613 "
1614
1615 DOCUMENT_LIST="
1616     doc
1617     htmlpages
1618     manpages
1619     podpages
1620     txtpages
1621 "
1622
1623 FEATURE_LIST="
1624     ftrapv
1625     gray
1626     hardcoded_tables
1627     omx_rpi
1628     runtime_cpudetect
1629     safe_bitstream_reader
1630     shared
1631     small
1632     static
1633     swscale_alpha
1634 "
1635
1636 LIBRARY_LIST="
1637     avcodec
1638     avdevice
1639     avfilter
1640     avformat
1641     avresample
1642     avutil
1643     postproc
1644     swresample
1645     swscale
1646 "
1647
1648 LICENSE_LIST="
1649     gpl
1650     nonfree
1651     version3
1652 "
1653
1654 PROGRAM_LIST="
1655     ffplay
1656     ffprobe
1657     ffserver
1658     ffmpeg
1659 "
1660
1661 SUBSYSTEM_LIST="
1662     dct
1663     dwt
1664     error_resilience
1665     faan
1666     fast_unaligned
1667     fft
1668     lsp
1669     lzo
1670     mdct
1671     pixelutils
1672     network
1673     rdft
1674 "
1675
1676 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1677 CONFIG_LIST="
1678     $DOCUMENT_LIST
1679     $EXAMPLE_LIST
1680     $EXTERNAL_LIBRARY_LIST
1681     $HWACCEL_LIBRARY_LIST
1682     $FEATURE_LIST
1683     $LICENSE_LIST
1684     $LIBRARY_LIST
1685     $PROGRAM_LIST
1686     $SUBSYSTEM_LIST
1687     fontconfig
1688     memory_poisoning
1689     neon_clobber_test
1690     ossfuzz
1691     pic
1692     thumb
1693     valgrind_backtrace
1694     xmm_clobber_test
1695     $COMPONENT_LIST
1696 "
1697
1698 THREADS_LIST="
1699     pthreads
1700     os2threads
1701     w32threads
1702 "
1703
1704 ATOMICS_LIST="
1705     atomics_gcc
1706     atomics_suncc
1707     atomics_win32
1708 "
1709
1710 AUTODETECT_LIBS="
1711     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1712     $HWACCEL_AUTODETECT_LIBRARY_LIST
1713     $THREADS_LIST
1714 "
1715
1716 ARCH_LIST="
1717     aarch64
1718     alpha
1719     arm
1720     avr32
1721     avr32_ap
1722     avr32_uc
1723     bfin
1724     ia64
1725     m68k
1726     mips
1727     mips64
1728     parisc
1729     ppc
1730     ppc64
1731     s390
1732     sh4
1733     sparc
1734     sparc64
1735     tilegx
1736     tilepro
1737     tomi
1738     x86
1739     x86_32
1740     x86_64
1741 "
1742
1743 ARCH_EXT_LIST_ARM="
1744     armv5te
1745     armv6
1746     armv6t2
1747     armv8
1748     neon
1749     vfp
1750     vfpv3
1751     setend
1752 "
1753
1754 ARCH_EXT_LIST_MIPS="
1755     mipsfpu
1756     mips32r2
1757     mips32r5
1758     mips64r2
1759     mips32r6
1760     mips64r6
1761     mipsdsp
1762     mipsdspr2
1763     msa
1764 "
1765
1766 ARCH_EXT_LIST_LOONGSON="
1767     loongson2
1768     loongson3
1769     mmi
1770 "
1771
1772 ARCH_EXT_LIST_X86_SIMD="
1773     aesni
1774     amd3dnow
1775     amd3dnowext
1776     avx
1777     avx2
1778     fma3
1779     fma4
1780     mmx
1781     mmxext
1782     sse
1783     sse2
1784     sse3
1785     sse4
1786     sse42
1787     ssse3
1788     xop
1789 "
1790
1791 ARCH_EXT_LIST_PPC="
1792     altivec
1793     dcbzl
1794     ldbrx
1795     power8
1796     ppc4xx
1797     vsx
1798 "
1799
1800 ARCH_EXT_LIST_X86="
1801     $ARCH_EXT_LIST_X86_SIMD
1802     cpunop
1803     i686
1804 "
1805
1806 ARCH_EXT_LIST="
1807     $ARCH_EXT_LIST_ARM
1808     $ARCH_EXT_LIST_PPC
1809     $ARCH_EXT_LIST_X86
1810     $ARCH_EXT_LIST_MIPS
1811     $ARCH_EXT_LIST_LOONGSON
1812 "
1813
1814 ARCH_FEATURES="
1815     aligned_stack
1816     fast_64bit
1817     fast_clz
1818     fast_cmov
1819     local_aligned_8
1820     local_aligned_16
1821     local_aligned_32
1822     simd_align_16
1823     simd_align_32
1824 "
1825
1826 BUILTIN_LIST="
1827     atomic_cas_ptr
1828     machine_rw_barrier
1829     MemoryBarrier
1830     mm_empty
1831     rdtsc
1832     sarestart
1833     sem_timedwait
1834     sync_val_compare_and_swap
1835 "
1836 HAVE_LIST_CMDLINE="
1837     inline_asm
1838     symver
1839     x86asm
1840 "
1841
1842 HAVE_LIST_PUB="
1843     bigendian
1844     fast_unaligned
1845 "
1846
1847 HEADERS_LIST="
1848     alsa_asoundlib_h
1849     altivec_h
1850     arpa_inet_h
1851     asm_types_h
1852     cdio_paranoia_h
1853     cdio_paranoia_paranoia_h
1854     cuda_h
1855     d3d11_h
1856     dispatch_dispatch_h
1857     dev_bktr_ioctl_bt848_h
1858     dev_bktr_ioctl_meteor_h
1859     dev_ic_bt8xx_h
1860     dev_video_bktr_ioctl_bt848_h
1861     dev_video_meteor_ioctl_meteor_h
1862     direct_h
1863     dirent_h
1864     dlfcn_h
1865     dxgidebug_h
1866     dxva_h
1867     ES2_gl_h
1868     gsm_h
1869     io_h
1870     mach_mach_time_h
1871     machine_ioctl_bt848_h
1872     machine_ioctl_meteor_h
1873     malloc_h
1874     opencv2_core_core_c_h
1875     openjpeg_2_2_openjpeg_h
1876     openjpeg_2_1_openjpeg_h
1877     openjpeg_2_0_openjpeg_h
1878     openjpeg_1_5_openjpeg_h
1879     OpenGL_gl3_h
1880     poll_h
1881     sndio_h
1882     soundcard_h
1883     stdatomic_h
1884     sys_mman_h
1885     sys_param_h
1886     sys_resource_h
1887     sys_select_h
1888     sys_soundcard_h
1889     sys_time_h
1890     sys_un_h
1891     sys_videoio_h
1892     termios_h
1893     udplite_h
1894     unistd_h
1895     valgrind_valgrind_h
1896     windows_h
1897     winsock2_h
1898 "
1899
1900 INTRINSICS_LIST="
1901     intrinsics_neon
1902 "
1903
1904 COMPLEX_FUNCS="
1905     cabs
1906     cexp
1907 "
1908
1909 MATH_FUNCS="
1910     atanf
1911     atan2f
1912     cbrt
1913     cbrtf
1914     copysign
1915     cosf
1916     erf
1917     exp2
1918     exp2f
1919     expf
1920     hypot
1921     isfinite
1922     isinf
1923     isnan
1924     ldexpf
1925     llrint
1926     llrintf
1927     log2
1928     log2f
1929     log10f
1930     lrint
1931     lrintf
1932     powf
1933     rint
1934     round
1935     roundf
1936     sinf
1937     trunc
1938     truncf
1939 "
1940
1941 SYSTEM_FUNCS="
1942     access
1943     aligned_malloc
1944     arc4random
1945     clock_gettime
1946     closesocket
1947     CommandLineToArgvW
1948     CoTaskMemFree
1949     CryptGenRandom
1950     dlopen
1951     fcntl
1952     flt_lim
1953     fork
1954     getaddrinfo
1955     gethrtime
1956     getopt
1957     GetProcessAffinityMask
1958     GetProcessMemoryInfo
1959     GetProcessTimes
1960     getrusage
1961     GetSystemTimeAsFileTime
1962     gettimeofday
1963     glob
1964     glXGetProcAddress
1965     gmtime_r
1966     inet_aton
1967     isatty
1968     jack_port_get_latency_range
1969     kbhit
1970     LoadLibrary
1971     localtime_r
1972     lstat
1973     lzo1x_999_compress
1974     mach_absolute_time
1975     MapViewOfFile
1976     memalign
1977     mkstemp
1978     mmap
1979     mprotect
1980     nanosleep
1981     PeekNamedPipe
1982     posix_memalign
1983     pthread_cancel
1984     sched_getaffinity
1985     SetConsoleTextAttribute
1986     SetConsoleCtrlHandler
1987     setmode
1988     setrlimit
1989     Sleep
1990     strerror_r
1991     sysconf
1992     sysctl
1993     usleep
1994     UTGetOSTypeFromString
1995     VirtualAlloc
1996     wglGetProcAddress
1997 "
1998
1999 TOOLCHAIN_FEATURES="
2000     as_dn_directive
2001     as_fpu_directive
2002     as_func
2003     as_object_arch
2004     asm_mod_q
2005     attribute_may_alias
2006     attribute_packed
2007     blocks_extension
2008     ebp_available
2009     ebx_available
2010     gnu_as
2011     gnu_windres
2012     ibm_asm
2013     inline_asm_direct_symbol_refs
2014     inline_asm_labels
2015     inline_asm_nonlocal_labels
2016     pragma_deprecated
2017     rsync_contimeout
2018     symver_asm_label
2019     symver_gnu_asm
2020     vfp_args
2021     xform_asm
2022     xmm_clobbers
2023 "
2024
2025 TYPES_LIST="
2026     CONDITION_VARIABLE_Ptr
2027     socklen_t
2028     struct_addrinfo
2029     struct_group_source_req
2030     struct_ip_mreq_source
2031     struct_ipv6_mreq
2032     struct_msghdr_msg_flags
2033     struct_pollfd
2034     struct_rusage_ru_maxrss
2035     struct_sctp_event_subscribe
2036     struct_sockaddr_in6
2037     struct_sockaddr_sa_len
2038     struct_sockaddr_storage
2039     struct_stat_st_mtim_tv_nsec
2040     struct_v4l2_frmivalenum_discrete
2041 "
2042
2043 HAVE_LIST="
2044     $ARCH_EXT_LIST
2045     $(add_suffix _external $ARCH_EXT_LIST)
2046     $(add_suffix _inline   $ARCH_EXT_LIST)
2047     $ARCH_FEATURES
2048     $ATOMICS_LIST
2049     $BUILTIN_LIST
2050     $COMPLEX_FUNCS
2051     $HAVE_LIST_CMDLINE
2052     $HAVE_LIST_PUB
2053     $HEADERS_LIST
2054     $INTRINSICS_LIST
2055     $MATH_FUNCS
2056     $SYSTEM_FUNCS
2057     $THREADS_LIST
2058     $TOOLCHAIN_FEATURES
2059     $TYPES_LIST
2060     alsa
2061     atomics_native
2062     dos_paths
2063     jack
2064     libc_msvcrt
2065     makeinfo
2066     makeinfo_html
2067     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2068     perl
2069     pod2man
2070     sdl2
2071     section_data_rel_ro
2072     sndio
2073     texi2html
2074     threads
2075     uwp
2076     vaapi_drm
2077     vaapi_x11
2078     vdpau_x11
2079     winrt
2080 "
2081
2082 # options emitted with CONFIG_ prefix but not available on the command line
2083 CONFIG_EXTRA="
2084     aandcttables
2085     ac3dsp
2086     audio_frame_queue
2087     audiodsp
2088     blockdsp
2089     bswapdsp
2090     cabac
2091     dirac_parse
2092     dvprofile
2093     exif
2094     faandct
2095     faanidct
2096     fdctdsp
2097     flacdsp
2098     fmtconvert
2099     frame_thread_encoder
2100     g722dsp
2101     golomb
2102     gplv3
2103     h263dsp
2104     h264chroma
2105     h264dsp
2106     h264parse
2107     h264pred
2108     h264qpel
2109     hevcparse
2110     hpeldsp
2111     huffman
2112     huffyuvdsp
2113     huffyuvencdsp
2114     idctdsp
2115     iirfilter
2116     mdct15
2117     intrax8
2118     iso_media
2119     ividsp
2120     jpegtables
2121     lgplv3
2122     libx262
2123     llauddsp
2124     llviddsp
2125     llvidencdsp
2126     lpc
2127     lzf
2128     me_cmp
2129     mpeg_er
2130     mpegaudio
2131     mpegaudiodsp
2132     mpegaudioheader
2133     mpegvideo
2134     mpegvideoenc
2135     mss34dsp
2136     pixblockdsp
2137     qpeldsp
2138     qsv
2139     qsvdec
2140     qsvenc
2141     rangecoder
2142     riffdec
2143     riffenc
2144     rtpdec
2145     rtpenc_chain
2146     rv34dsp
2147     sinewin
2148     snappy
2149     srtp
2150     startcode
2151     texturedsp
2152     texturedspenc
2153     tpeldsp
2154     vaapi_encode
2155     vc1dsp
2156     videodsp
2157     vp3dsp
2158     vp56dsp
2159     vp8dsp
2160     vt_bt2020
2161     wma_freqs
2162     wmv2dsp
2163 "
2164
2165 CMDLINE_SELECT="
2166     $ARCH_EXT_LIST
2167     $CONFIG_LIST
2168     $HAVE_LIST_CMDLINE
2169     $THREADS_LIST
2170     asm
2171     cross_compile
2172     debug
2173     extra_warnings
2174     logging
2175     lto
2176     optimizations
2177     rpath
2178     stripping
2179 "
2180
2181 PATHS_LIST="
2182     bindir
2183     datadir
2184     docdir
2185     incdir
2186     libdir
2187     mandir
2188     pkgconfigdir
2189     prefix
2190     shlibdir
2191     install_name_dir
2192 "
2193
2194 CMDLINE_SET="
2195     $PATHS_LIST
2196     ar
2197     arch
2198     as
2199     assert_level
2200     build_suffix
2201     cc
2202     objcc
2203     cpu
2204     cross_prefix
2205     custom_allocator
2206     cxx
2207     dep_cc
2208     doxygen
2209     env
2210     extra_version
2211     gas
2212     host_cc
2213     host_cflags
2214     host_extralibs
2215     host_ld
2216     host_ldflags
2217     host_os
2218     ignore_tests
2219     install
2220     ld
2221     ln_s
2222     logfile
2223     malloc_prefix
2224     nm
2225     optflags
2226     nvccflags
2227     pkg_config
2228     pkg_config_flags
2229     progs_suffix
2230     random_seed
2231     ranlib
2232     samples
2233     strip
2234     sws_max_filter_size
2235     sysinclude
2236     sysroot
2237     target_exec
2238     target_os
2239     target_path
2240     target_samples
2241     tempprefix
2242     toolchain
2243     valgrind
2244     x86asmexe
2245 "
2246
2247 CMDLINE_APPEND="
2248     extra_cflags
2249     extra_cxxflags
2250     extra_objcflags
2251     host_cppflags
2252 "
2253
2254 # code dependency declarations
2255
2256 # architecture extensions
2257
2258 armv5te_deps="arm"
2259 armv6_deps="arm"
2260 armv6t2_deps="arm"
2261 armv8_deps="aarch64"
2262 neon_deps_any="aarch64 arm"
2263 intrinsics_neon_deps="neon"
2264 vfp_deps_any="aarch64 arm"
2265 vfpv3_deps="vfp"
2266 setend_deps="arm"
2267
2268 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2269
2270 loongson2_deps="mips"
2271 loongson3_deps="mips"
2272 mipsfpu_deps="mips"
2273 mipsdsp_deps="mips"
2274 mipsdspr2_deps="mips"
2275 mips32r2_deps="mips"
2276 mips32r5_deps="mips"
2277 mips32r6_deps="mips"
2278 mips64r2_deps="mips"
2279 mips64r6_deps="mips"
2280 msa_deps="mipsfpu"
2281 mmi_deps="mips"
2282
2283 altivec_deps="ppc"
2284 dcbzl_deps="ppc"
2285 ldbrx_deps="ppc"
2286 ppc4xx_deps="ppc"
2287 vsx_deps="altivec"
2288 power8_deps="vsx"
2289
2290 cpunop_deps="i686"
2291 x86_64_select="i686"
2292 x86_64_suggest="fast_cmov"
2293
2294 amd3dnow_deps="mmx"
2295 amd3dnowext_deps="amd3dnow"
2296 i686_deps="x86"
2297 mmx_deps="x86"
2298 mmxext_deps="mmx"
2299 sse_deps="mmxext"
2300 sse2_deps="sse"
2301 sse3_deps="sse2"
2302 ssse3_deps="sse3"
2303 sse4_deps="ssse3"
2304 sse42_deps="sse4"
2305 aesni_deps="sse42"
2306 avx_deps="sse42"
2307 xop_deps="avx"
2308 fma3_deps="avx"
2309 fma4_deps="avx"
2310 avx2_deps="avx"
2311
2312 mmx_external_deps="x86asm"
2313 mmx_inline_deps="inline_asm"
2314 mmx_suggest="mmx_external mmx_inline"
2315
2316 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2317     eval dep=\$${ext}_deps
2318     eval ${ext}_external_deps='"${dep}_external"'
2319     eval ${ext}_inline_deps='"${dep}_inline"'
2320     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2321 done
2322
2323 aligned_stack_if_any="aarch64 ppc x86"
2324 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2325 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2326 fast_unaligned_if_any="aarch64 ppc x86"
2327 simd_align_16_if_any="altivec neon sse"
2328 simd_align_32_if_any="avx"
2329
2330 # system capabilities
2331 symver_if_any="symver_asm_label symver_gnu_asm"
2332 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
2333
2334 # threading support
2335 atomics_gcc_if="sync_val_compare_and_swap"
2336 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2337 atomics_win32_if="MemoryBarrier"
2338 atomics_native_if_any="$ATOMICS_LIST"
2339 w32threads_deps="atomics_native"
2340 threads_if_any="$THREADS_LIST"
2341
2342 # subsystems
2343 dct_select="rdft"
2344 dirac_parse_select="golomb"
2345 error_resilience_select="me_cmp"
2346 faandct_deps="faan fdctdsp"
2347 faanidct_deps="faan idctdsp"
2348 h264dsp_select="startcode"
2349 hevcparse_select="golomb"
2350 frame_thread_encoder_deps="encoders threads"
2351 intrax8_select="blockdsp idctdsp"
2352 mdct_select="fft"
2353 mdct15_select="fft"
2354 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2355 mpeg_er_select="error_resilience"
2356 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2357 mpegaudiodsp_select="dct"
2358 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2359 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2360 vc1dsp_select="h264chroma qpeldsp startcode"
2361 rdft_select="fft"
2362
2363 # decoders / encoders
2364 aac_decoder_select="mdct15 mdct sinewin"
2365 aac_fixed_decoder_select="mdct sinewin"
2366 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2367 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2368 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2369 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2370 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2371 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2372 adpcm_g722_decoder_select="g722dsp"
2373 adpcm_g722_encoder_select="g722dsp"
2374 aic_decoder_select="golomb idctdsp"
2375 alac_encoder_select="lpc"
2376 als_decoder_select="bswapdsp"
2377 amrnb_decoder_select="lsp"
2378 amrwb_decoder_select="lsp"
2379 amv_decoder_select="sp5x_decoder exif"
2380 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2381 ape_decoder_select="bswapdsp llauddsp"
2382 apng_decoder_select="zlib"
2383 apng_encoder_select="llvidencdsp zlib"
2384 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2385 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2386 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2387 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2388 atrac1_decoder_select="mdct sinewin"
2389 atrac3_decoder_select="mdct"
2390 atrac3p_decoder_select="mdct sinewin"
2391 avrn_decoder_select="exif jpegtables"
2392 bink_decoder_select="blockdsp hpeldsp"
2393 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2394 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2395 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2396 clearvideo_decoder_select="idctdsp"
2397 cllc_decoder_select="bswapdsp"
2398 comfortnoise_encoder_select="lpc"
2399 cook_decoder_select="audiodsp mdct sinewin"
2400 cscd_decoder_select="lzo"
2401 cscd_decoder_suggest="zlib"
2402 dca_decoder_select="mdct"
2403 dds_decoder_select="texturedsp"
2404 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2405 dnxhd_decoder_select="blockdsp idctdsp"
2406 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2407 dolby_e_decoder_select="mdct"
2408 dvvideo_decoder_select="dvprofile idctdsp"
2409 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2410 dxa_decoder_select="zlib"
2411 dxv_decoder_select="lzf texturedsp"
2412 eac3_decoder_select="ac3_decoder"
2413 eac3_encoder_select="ac3_encoder"
2414 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2415 eatgq_decoder_select="aandcttables"
2416 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2417 exr_decoder_select="zlib"
2418 ffv1_decoder_select="rangecoder"
2419 ffv1_encoder_select="rangecoder"
2420 ffvhuff_decoder_select="huffyuv_decoder"
2421 ffvhuff_encoder_select="huffyuv_encoder"
2422 fic_decoder_select="golomb"
2423 flac_decoder_select="flacdsp"
2424 flac_encoder_select="bswapdsp flacdsp lpc"
2425 flashsv2_decoder_select="zlib"
2426 flashsv2_encoder_select="zlib"
2427 flashsv_decoder_select="zlib"
2428 flashsv_encoder_select="zlib"
2429 flv_decoder_select="h263_decoder"
2430 flv_encoder_select="h263_encoder"
2431 fourxm_decoder_select="blockdsp bswapdsp"
2432 fraps_decoder_select="bswapdsp huffman"
2433 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2434 g729_decoder_select="audiodsp"
2435 h261_decoder_select="mpegvideo"
2436 h261_encoder_select="aandcttables mpegvideoenc"
2437 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2438 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2439 h263i_decoder_select="h263_decoder"
2440 h263p_decoder_select="h263_decoder"
2441 h263p_encoder_select="h263_encoder"
2442 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2443 h264_decoder_suggest="error_resilience"
2444 hap_decoder_select="snappy texturedsp"
2445 hap_encoder_deps="libsnappy"
2446 hap_encoder_select="texturedspenc"
2447 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2448 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2449 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2450 iac_decoder_select="imc_decoder"
2451 imc_decoder_select="bswapdsp fft mdct sinewin"
2452 indeo3_decoder_select="hpeldsp"
2453 indeo4_decoder_select="ividsp"
2454 indeo5_decoder_select="ividsp"
2455 interplay_video_decoder_select="hpeldsp"
2456 jpegls_decoder_select="mjpeg_decoder"
2457 jv_decoder_select="blockdsp"
2458 lagarith_decoder_select="llviddsp"
2459 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2460 magicyuv_decoder_select="llviddsp"
2461 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2462 metasound_decoder_select="lsp mdct sinewin"
2463 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2464 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2465 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2466 mjpegb_decoder_select="mjpeg_decoder"
2467 mlp_decoder_select="mlp_parser"
2468 mlp_encoder_select="lpc"
2469 motionpixels_decoder_select="bswapdsp"
2470 mp1_decoder_select="mpegaudio"
2471 mp1float_decoder_select="mpegaudio"
2472 mp2_decoder_select="mpegaudio"
2473 mp2float_decoder_select="mpegaudio"
2474 mp3_decoder_select="mpegaudio"
2475 mp3adu_decoder_select="mpegaudio"
2476 mp3adufloat_decoder_select="mpegaudio"
2477 mp3float_decoder_select="mpegaudio"
2478 mp3on4_decoder_select="mpegaudio"
2479 mp3on4float_decoder_select="mpegaudio"
2480 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2481 mpc8_decoder_select="mpegaudiodsp"
2482 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2483 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2484 mpegvideo_decoder_select="mpegvideo"
2485 mpeg1video_decoder_select="mpegvideo"
2486 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2487 mpeg2video_decoder_select="mpegvideo"
2488 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2489 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2490 mpeg4_encoder_select="h263_encoder"
2491 msa1_decoder_select="mss34dsp"
2492 mscc_decoder_select="zlib"
2493 msmpeg4v1_decoder_select="h263_decoder"
2494 msmpeg4v2_decoder_select="h263_decoder"
2495 msmpeg4v2_encoder_select="h263_encoder"
2496 msmpeg4v3_decoder_select="h263_decoder"
2497 msmpeg4v3_encoder_select="h263_encoder"
2498 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2499 mts2_decoder_select="mss34dsp"
2500 mxpeg_decoder_select="mjpeg_decoder"
2501 nellymoser_decoder_select="mdct sinewin"
2502 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2503 nuv_decoder_select="idctdsp lzo"
2504 on2avc_decoder_select="mdct"
2505 opus_decoder_deps="swresample"
2506 opus_decoder_select="mdct15"
2507 opus_encoder_select="audio_frame_queue mdct15"
2508 png_decoder_select="zlib"
2509 png_encoder_select="llvidencdsp zlib"
2510 prores_decoder_select="blockdsp idctdsp"
2511 prores_encoder_select="fdctdsp"
2512 qcelp_decoder_select="lsp"
2513 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2514 ra_144_decoder_select="audiodsp"
2515 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2516 ralf_decoder_select="golomb"
2517 rawvideo_decoder_select="bswapdsp"
2518 rscc_decoder_select="zlib"
2519 rtjpeg_decoder_select="me_cmp"
2520 rv10_decoder_select="h263_decoder"
2521 rv10_encoder_select="h263_encoder"
2522 rv20_decoder_select="h263_decoder"
2523 rv20_encoder_select="h263_encoder"
2524 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2525 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2526 screenpresso_decoder_select="zlib"
2527 shorten_decoder_select="bswapdsp"
2528 sipr_decoder_select="lsp"
2529 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2530 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2531 sonic_decoder_select="golomb rangecoder"
2532 sonic_encoder_select="golomb rangecoder"
2533 sonic_ls_encoder_select="golomb rangecoder"
2534 sp5x_decoder_select="mjpeg_decoder"
2535 srgc_decoder_select="zlib"
2536 svq1_decoder_select="hpeldsp"
2537 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2538 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2539 svq3_decoder_suggest="zlib"
2540 tak_decoder_select="audiodsp"
2541 tdsc_decoder_select="zlib mjpeg_decoder"
2542 theora_decoder_select="vp3_decoder"
2543 thp_decoder_select="mjpeg_decoder"
2544 tiff_decoder_suggest="zlib lzma"
2545 tiff_encoder_suggest="zlib"
2546 truehd_decoder_select="mlp_parser"
2547 truehd_encoder_select="lpc"
2548 truemotion2_decoder_select="bswapdsp"
2549 truespeech_decoder_select="bswapdsp"
2550 tscc_decoder_select="zlib"
2551 twinvq_decoder_select="mdct lsp sinewin"
2552 txd_decoder_select="texturedsp"
2553 utvideo_decoder_select="bswapdsp llviddsp"
2554 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2555 vble_decoder_select="llviddsp"
2556 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2557 vc1_qsv_decoder_deps="libmfx"
2558 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2559 vc1image_decoder_select="vc1_decoder"
2560 vorbis_decoder_select="mdct"
2561 vorbis_encoder_select="mdct"
2562 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2563 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2564 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2565 vp6a_decoder_select="vp6_decoder"
2566 vp6f_decoder_select="vp6_decoder"
2567 vp7_decoder_select="h264pred videodsp vp8dsp"
2568 vp8_decoder_select="h264pred videodsp vp8dsp"
2569 vp9_decoder_select="videodsp vp9_parser"
2570 webp_decoder_select="vp8_decoder exif"
2571 wmalossless_decoder_select="llauddsp"
2572 wmapro_decoder_select="mdct sinewin wma_freqs"
2573 wmav1_decoder_select="mdct sinewin wma_freqs"
2574 wmav1_encoder_select="mdct sinewin wma_freqs"
2575 wmav2_decoder_select="mdct sinewin wma_freqs"
2576 wmav2_encoder_select="mdct sinewin wma_freqs"
2577 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2578 wmv1_decoder_select="h263_decoder"
2579 wmv1_encoder_select="h263_encoder"
2580 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2581 wmv2_encoder_select="h263_encoder wmv2dsp"
2582 wmv3_decoder_select="vc1_decoder"
2583 wmv3image_decoder_select="wmv3_decoder"
2584 xma1_decoder_select="wmapro_decoder"
2585 xma2_decoder_select="wmapro_decoder"
2586 zerocodec_decoder_select="zlib"
2587 zlib_decoder_select="zlib"
2588 zlib_encoder_select="zlib"
2589 zmbv_decoder_select="zlib"
2590 zmbv_encoder_select="zlib"
2591
2592 # platform codecs
2593 audiotoolbox_deps="AudioToolbox_AudioToolbox_h"
2594 audiotoolbox_extralibs="-framework CoreFoundation -framework AudioToolbox -framework CoreMedia"
2595
2596 # hardware accelerators
2597 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2598 cuda_deps_any="dlopen LoadLibrary"
2599 cuvid_deps="cuda"
2600 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2601 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32"
2602 dxva2_extralibs="-luser32"
2603 vda_framework_deps="VideoDecodeAcceleration_VDADecoder_h blocks_extension"
2604 vda_framework_extralibs="-framework VideoDecodeAcceleration"
2605 vda_deps="vda_framework pthreads"
2606 vda_extralibs="-framework CoreFoundation -framework QuartzCore"
2607 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2608 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2609 xvmc_deps="X11_extensions_XvMClib_h"
2610
2611 h263_vaapi_hwaccel_deps="vaapi"
2612 h263_vaapi_hwaccel_select="h263_decoder"
2613 h263_videotoolbox_hwaccel_deps="videotoolbox"
2614 h263_videotoolbox_hwaccel_select="h263_decoder"
2615 h264_cuvid_hwaccel_deps="cuda cuvid"
2616 h264_cuvid_hwaccel_select="h264_cuvid_decoder"
2617 h264_d3d11va_hwaccel_deps="d3d11va"
2618 h264_d3d11va_hwaccel_select="h264_decoder"
2619 h264_d3d11va2_hwaccel_deps="d3d11va"
2620 h264_d3d11va2_hwaccel_select="h264_decoder"
2621 h264_dxva2_hwaccel_deps="dxva2"
2622 h264_dxva2_hwaccel_select="h264_decoder"
2623 h264_mediacodec_hwaccel_deps="mediacodec"
2624 h264_mmal_hwaccel_deps="mmal"
2625 h264_qsv_hwaccel_deps="libmfx"
2626 h264_vaapi_hwaccel_deps="vaapi"
2627 h264_vaapi_hwaccel_select="h264_decoder"
2628 h264_vda_hwaccel_deps="vda"
2629 h264_vda_hwaccel_select="h264_decoder"
2630 h264_vda_old_hwaccel_deps="vda"
2631 h264_vda_old_hwaccel_select="h264_decoder"
2632 h264_vdpau_hwaccel_deps="vdpau"
2633 h264_vdpau_hwaccel_select="h264_decoder"
2634 h264_videotoolbox_hwaccel_deps="videotoolbox"
2635 h264_videotoolbox_hwaccel_select="h264_decoder"
2636 hevc_cuvid_hwaccel_deps="cuda cuvid"
2637 hevc_cuvid_hwaccel_select="hevc_cuvid_decoder"
2638 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2639 hevc_d3d11va_hwaccel_select="hevc_decoder"
2640 hevc_mediacodec_hwaccel_deps="mediacodec"
2641 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2642 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2643 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2644 hevc_dxva2_hwaccel_select="hevc_decoder"
2645 hevc_qsv_hwaccel_deps="libmfx"
2646 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2647 hevc_vaapi_hwaccel_select="hevc_decoder"
2648 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2649 hevc_vdpau_hwaccel_select="hevc_decoder"
2650 mjpeg_cuvid_hwaccel_deps="cuda cuvid"
2651 mjpeg_cuvid_hwaccel_select="mjpeg_cuvid_decoder"
2652 mpeg_xvmc_hwaccel_deps="xvmc"
2653 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2654 mpeg1_cuvid_hwaccel_deps="cuda cuvid"
2655 mpeg1_cuvid_hwaccel_select="mpeg1_cuvid_decoder"
2656 mpeg1_vdpau_hwaccel_deps="vdpau"
2657 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2658 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2659 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2660 mpeg1_xvmc_hwaccel_deps="xvmc"
2661 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2662 mpeg2_cuvid_hwaccel_deps="cuda cuvid"
2663 mpeg2_cuvid_hwaccel_select="mpeg2_cuvid_decoder"
2664 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2665 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2666 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2667 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2668 mpeg2_dxva2_hwaccel_deps="dxva2"
2669 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2670 mpeg2_mediacodec_hwaccel_deps="mediacodec"
2671 mpeg2_mmal_hwaccel_deps="mmal"
2672 mpeg2_qsv_hwaccel_deps="libmfx"
2673 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2674 mpeg2_vaapi_hwaccel_deps="vaapi"
2675 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2676 mpeg2_vdpau_hwaccel_deps="vdpau"
2677 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2678 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2679 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2680 mpeg2_xvmc_hwaccel_deps="xvmc"
2681 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2682 mpeg4_cuvid_hwaccel_deps="cuda cuvid"
2683 mpeg4_cuvid_hwaccel_select="mpeg4_cuvid_decoder"
2684 mpeg4_mediacodec_hwaccel_deps="mediacodec"
2685 mpeg4_mmal_hwaccel_deps="mmal"
2686 mpeg4_vaapi_hwaccel_deps="vaapi"
2687 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2688 mpeg4_vdpau_hwaccel_deps="vdpau"
2689 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2690 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2691 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2692 vc1_cuvid_hwaccel_deps="cuda cuvid"
2693 vc1_cuvid_hwaccel_select="vc1_cuvid_decoder"
2694 vc1_d3d11va_hwaccel_deps="d3d11va"
2695 vc1_d3d11va_hwaccel_select="vc1_decoder"
2696 vc1_d3d11va2_hwaccel_deps="d3d11va"
2697 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2698 vc1_dxva2_hwaccel_deps="dxva2"
2699 vc1_dxva2_hwaccel_select="vc1_decoder"
2700 vc1_mmal_hwaccel_deps="mmal"
2701 vc1_qsv_hwaccel_deps="libmfx"
2702 vc1_qsv_hwaccel_select="qsvdec_vc1"
2703 vc1_vaapi_hwaccel_deps="vaapi"
2704 vc1_vaapi_hwaccel_select="vc1_decoder"
2705 vc1_vdpau_hwaccel_deps="vdpau"
2706 vc1_vdpau_hwaccel_select="vc1_decoder"
2707 vp8_cuvid_hwaccel_deps="cuda cuvid"
2708 vp8_cuvid_hwaccel_select="vp8_cuvid_decoder"
2709 vp9_cuvid_hwaccel_deps="cuda cuvid"
2710 vp9_cuvid_hwaccel_select="vp9_cuvid_decoder"
2711 vp8_mediacodec_hwaccel_deps="mediacodec"
2712 vp8_qsv_hwaccel_deps="libmfx"
2713 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2714 vp9_d3d11va_hwaccel_select="vp9_decoder"
2715 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2716 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2717 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2718 vp9_dxva2_hwaccel_select="vp9_decoder"
2719 vp9_mediacodec_hwaccel_deps="mediacodec"
2720 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2721 vp9_vaapi_hwaccel_select="vp9_decoder"
2722 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2723 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2724 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2725 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2726 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2727
2728 # hardware-accelerated codecs
2729 omx_deps="dlopen pthreads"
2730 omx_extralibs='$ldl'
2731 omx_rpi_select="omx"
2732 qsvdec_select="qsv"
2733 qsvenc_select="qsv"
2734 vaapi_encode_deps="vaapi"
2735
2736 hwupload_cuda_filter_deps="cuda"
2737 scale_npp_filter_deps="cuda libnpp"
2738 scale_cuda_filter_deps="cuda_sdk"
2739
2740 nvenc_deps="cuda"
2741 nvenc_deps_any="dlopen LoadLibrary"
2742 nvenc_encoder_deps="nvenc"
2743
2744 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2745 h264_cuvid_decoder_deps="cuda cuvid"
2746 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2747 h264_mediacodec_decoder_deps="mediacodec"
2748 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2749 h264_mmal_decoder_deps="mmal"
2750 h264_nvenc_encoder_deps="nvenc"
2751 h264_omx_encoder_deps="omx"
2752 h264_qsv_decoder_deps="libmfx"
2753 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2754 h264_qsv_encoder_deps="libmfx"
2755 h264_qsv_encoder_select="qsvenc"
2756 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2757 h264_vaapi_encoder_select="vaapi_encode golomb"
2758 h264_vda_decoder_deps="vda"
2759 h264_vda_decoder_select="h264_decoder"
2760 h264_vdpau_decoder_deps="vdpau"
2761 h264_vdpau_decoder_select="h264_decoder"
2762 hevc_cuvid_decoder_deps="cuda cuvid"
2763 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2764 hevc_mediacodec_decoder_deps="mediacodec"
2765 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2766 hevc_nvenc_encoder_deps="nvenc"
2767 hevc_qsv_decoder_deps="libmfx"
2768 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2769 hevc_qsv_encoder_deps="libmfx"
2770 hevc_qsv_encoder_select="hevcparse qsvenc"
2771 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2772 hevc_vaapi_encoder_select="vaapi_encode golomb"
2773 mjpeg_cuvid_decoder_deps="cuda cuvid"
2774 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2775 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2776 mpeg1_cuvid_decoder_deps="cuda cuvid"
2777 mpeg1_vdpau_decoder_deps="vdpau"
2778 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2779 mpeg2_crystalhd_decoder_select="crystalhd"
2780 mpeg2_cuvid_decoder_deps="cuda cuvid"
2781 mpeg2_mmal_decoder_deps="mmal"
2782 mpeg2_mediacodec_decoder_deps="mediacodec"
2783 mpeg2_qsv_decoder_deps="libmfx"
2784 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2785 mpeg2_qsv_encoder_deps="libmfx"
2786 mpeg2_qsv_encoder_select="qsvenc"
2787 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2788 mpeg2_vaapi_encoder_select="vaapi_encode"
2789 mpeg4_crystalhd_decoder_select="crystalhd"
2790 mpeg4_cuvid_decoder_deps="cuda cuvid"
2791 mpeg4_mediacodec_decoder_deps="mediacodec"
2792 mpeg4_mmal_decoder_deps="mmal"
2793 mpeg4_omx_encoder_deps="omx"
2794 mpeg4_vdpau_decoder_deps="vdpau"
2795 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2796 mpeg_vdpau_decoder_deps="vdpau"
2797 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2798 msmpeg4_crystalhd_decoder_select="crystalhd"
2799 nvenc_h264_encoder_select="h264_nvenc_encoder"
2800 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2801 vc1_crystalhd_decoder_select="crystalhd"
2802 vc1_cuvid_decoder_deps="cuda cuvid"
2803 vc1_mmal_decoder_deps="mmal"
2804 vc1_vdpau_decoder_deps="vdpau"
2805 vc1_vdpau_decoder_select="vc1_decoder"
2806 vp8_cuvid_decoder_deps="cuda cuvid"
2807 vp8_mediacodec_decoder_deps="mediacodec"
2808 vp8_qsv_decoder_deps="libmfx"
2809 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2810 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2811 vp8_vaapi_encoder_select="vaapi_encode"
2812 vp9_cuvid_decoder_deps="cuda cuvid"
2813 vp9_mediacodec_decoder_deps="mediacodec"
2814 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2815 vp9_vaapi_encoder_select="vaapi_encode"
2816 wmv3_crystalhd_decoder_select="crystalhd"
2817 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2818
2819 # parsers
2820 h264_parser_select="golomb h264dsp h264parse"
2821 hevc_parser_select="hevcparse"
2822 mpegaudio_parser_select="mpegaudioheader"
2823 mpegvideo_parser_select="mpegvideo"
2824 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2825 vc1_parser_select="vc1dsp"
2826
2827 # bitstream_filters
2828 mjpeg2jpeg_bsf_select="jpegtables"
2829
2830 # external libraries
2831 aac_at_decoder_deps="audiotoolbox"
2832 ac3_at_decoder_deps="audiotoolbox"
2833 ac3_at_decoder_select="ac3_parser"
2834 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2835 alac_at_decoder_deps="audiotoolbox"
2836 amr_nb_at_decoder_deps="audiotoolbox"
2837 avisynth_deps_any="dlopen LoadLibrary"
2838 avisynth_demuxer_deps="avisynth"
2839 avisynth_demuxer_select="riffdec"
2840 eac3_at_decoder_deps="audiotoolbox"
2841 eac3_at_decoder_select="ac3_parser"
2842 gsm_ms_at_decoder_deps="audiotoolbox"
2843 ilbc_at_decoder_deps="audiotoolbox"
2844 mp1_at_decoder_deps="audiotoolbox"
2845 mp2_at_decoder_deps="audiotoolbox"
2846 mp3_at_decoder_deps="audiotoolbox"
2847 mp1_at_decoder_select="mpegaudioheader"
2848 mp2_at_decoder_select="mpegaudioheader"
2849 mp3_at_decoder_select="mpegaudioheader"
2850 pcm_alaw_at_decoder_deps="audiotoolbox"
2851 pcm_mulaw_at_decoder_deps="audiotoolbox"
2852 qdmc_at_decoder_deps="audiotoolbox"
2853 qdm2_at_decoder_deps="audiotoolbox"
2854 aac_at_encoder_deps="audiotoolbox"
2855 aac_at_encoder_select="audio_frame_queue"
2856 alac_at_encoder_deps="audiotoolbox"
2857 alac_at_encoder_select="audio_frame_queue"
2858 ilbc_at_encoder_deps="audiotoolbox"
2859 ilbc_at_encoder_select="audio_frame_queue"
2860 pcm_alaw_at_encoder_deps="audiotoolbox"
2861 pcm_alaw_at_encoder_select="audio_frame_queue"
2862 pcm_mulaw_at_encoder_deps="audiotoolbox"
2863 pcm_mulaw_at_encoder_select="audio_frame_queue"
2864 chromaprint_muxer_deps="chromaprint"
2865 h264_videotoolbox_encoder_deps="videotoolbox_encoder pthreads"
2866 libcelt_decoder_deps="libcelt"
2867 libfdk_aac_decoder_deps="libfdk_aac"
2868 libfdk_aac_encoder_deps="libfdk_aac"
2869 libfdk_aac_encoder_select="audio_frame_queue"
2870 libgme_demuxer_deps="libgme"
2871 libgsm_decoder_deps="libgsm"
2872 libgsm_encoder_deps="libgsm"
2873 libgsm_ms_decoder_deps="libgsm"
2874 libgsm_ms_encoder_deps="libgsm"
2875 libilbc_decoder_deps="libilbc"
2876 libilbc_encoder_deps="libilbc"
2877 libkvazaar_encoder_deps="libkvazaar"
2878 libmodplug_demuxer_deps="libmodplug"
2879 libmp3lame_encoder_deps="libmp3lame"
2880 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2881 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2882 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2883 libopencore_amrnb_encoder_select="audio_frame_queue"
2884 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2885 libopenh264_decoder_deps="libopenh264"
2886 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2887 libopenh264_encoder_deps="libopenh264"
2888 libopenjpeg_decoder_deps="libopenjpeg"
2889 libopenjpeg_encoder_deps="libopenjpeg"
2890 libopenmpt_demuxer_deps="libopenmpt"
2891 libopus_decoder_deps="libopus"
2892 libopus_encoder_deps="libopus"
2893 libopus_encoder_select="audio_frame_queue"
2894 librsvg_decoder_deps="librsvg"
2895 libshine_encoder_deps="libshine"
2896 libshine_encoder_select="audio_frame_queue"
2897 libspeex_decoder_deps="libspeex"
2898 libspeex_encoder_deps="libspeex"
2899 libspeex_encoder_select="audio_frame_queue"
2900 libtheora_encoder_deps="libtheora"
2901 libtwolame_encoder_deps="libtwolame"
2902 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2903 libvorbis_decoder_deps="libvorbis"
2904 libvorbis_encoder_deps="libvorbis"
2905 libvorbis_encoder_select="audio_frame_queue"
2906 libvpx_vp8_decoder_deps="libvpx"
2907 libvpx_vp8_encoder_deps="libvpx"
2908 libvpx_vp9_decoder_deps="libvpx"
2909 libvpx_vp9_encoder_deps="libvpx"
2910 libwavpack_encoder_deps="libwavpack"
2911 libwavpack_encoder_select="audio_frame_queue"
2912 libwebp_encoder_deps="libwebp"
2913 libwebp_anim_encoder_deps="libwebp"
2914 libx262_encoder_deps="libx262"
2915 libx264_encoder_deps="libx264"
2916 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2917 libx264rgb_encoder_select="libx264_encoder"
2918 libx265_encoder_deps="libx265"
2919 libxavs_encoder_deps="libxavs"
2920 libxvid_encoder_deps="libxvid"
2921 libzvbi_teletext_decoder_deps="libzvbi"
2922 videotoolbox_deps="VideoToolbox_VideoToolbox_h"
2923 videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework CoreVideo"
2924 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2925 videotoolbox_encoder_suggest="vda_framework vt_bt2020"
2926 vt_bt2020_deps="kCVImageBufferColorPrimaries_ITU_R_2020"
2927
2928 # demuxers / muxers
2929 ac3_demuxer_select="ac3_parser"
2930 aiff_muxer_select="iso_media"
2931 asf_demuxer_select="riffdec"
2932 asf_o_demuxer_select="riffdec"
2933 asf_muxer_select="riffenc"
2934 asf_stream_muxer_select="asf_muxer"
2935 avi_demuxer_select="iso_media riffdec exif"
2936 avi_muxer_select="riffenc"
2937 caf_demuxer_select="iso_media riffdec"
2938 caf_muxer_select="iso_media"
2939 dash_muxer_select="mp4_muxer"
2940 dirac_demuxer_select="dirac_parser"
2941 dts_demuxer_select="dca_parser"
2942 dtshd_demuxer_select="dca_parser"
2943 dv_demuxer_select="dvprofile"
2944 dv_muxer_select="dvprofile"
2945 dxa_demuxer_select="riffdec"
2946 eac3_demuxer_select="ac3_parser"
2947 f4v_muxer_select="mov_muxer"
2948 fifo_muxer_deps="threads"
2949 flac_demuxer_select="flac_parser"
2950 hds_muxer_select="flv_muxer"
2951 hls_muxer_select="mpegts_muxer"
2952 image2_alias_pix_demuxer_select="image2_demuxer"
2953 image2_brender_pix_demuxer_select="image2_demuxer"
2954 ipod_muxer_select="mov_muxer"
2955 ismv_muxer_select="mov_muxer"
2956 matroska_audio_muxer_select="matroska_muxer"
2957 matroska_demuxer_select="iso_media riffdec"
2958 matroska_demuxer_suggest="bzlib lzo zlib"
2959 matroska_muxer_select="iso_media riffenc"
2960 mmf_muxer_select="riffenc"
2961 mov_demuxer_select="iso_media riffdec"
2962 mov_demuxer_suggest="zlib"
2963 mov_muxer_select="iso_media riffenc rtpenc_chain"
2964 mp3_demuxer_select="mpegaudio_parser"
2965 mp3_muxer_select="mpegaudioheader"
2966 mp4_muxer_select="mov_muxer"
2967 mpegts_demuxer_select="iso_media"
2968 mpegts_muxer_select="adts_muxer latm_muxer"
2969 mpegtsraw_demuxer_select="mpegts_demuxer"
2970 mxf_d10_muxer_select="mxf_muxer"
2971 mxf_opatom_muxer_select="mxf_muxer"
2972 nut_muxer_select="riffenc"
2973 nuv_demuxer_select="riffdec"
2974 oga_muxer_select="ogg_muxer"
2975 ogg_demuxer_select="dirac_parse"
2976 ogv_muxer_select="ogg_muxer"
2977 opus_muxer_select="ogg_muxer"
2978 psp_muxer_select="mov_muxer"
2979 rtp_demuxer_select="sdp_demuxer"
2980 rtp_muxer_select="golomb"
2981 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2982 rtsp_demuxer_select="http_protocol rtpdec"
2983 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2984 sap_demuxer_select="sdp_demuxer"
2985 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2986 sdp_demuxer_select="rtpdec"
2987 smoothstreaming_muxer_select="ismv_muxer"
2988 spdif_muxer_select="aac_parser"
2989 spx_muxer_select="ogg_muxer"
2990 swf_demuxer_suggest="zlib"
2991 tak_demuxer_select="tak_parser"
2992 tg2_muxer_select="mov_muxer"
2993 tgp_muxer_select="mov_muxer"
2994 vobsub_demuxer_select="mpegps_demuxer"
2995 w64_demuxer_select="wav_demuxer"
2996 w64_muxer_select="wav_muxer"
2997 wav_demuxer_select="riffdec"
2998 wav_muxer_select="riffenc"
2999 webm_muxer_select="iso_media riffenc"
3000 webm_dash_manifest_demuxer_select="matroska_demuxer"
3001 wtv_demuxer_select="mpegts_demuxer riffdec"
3002 wtv_muxer_select="mpegts_muxer riffenc"
3003 xmv_demuxer_select="riffdec"
3004 xwma_demuxer_select="riffdec"
3005
3006 # indevs / outdevs
3007 alsa_indev_deps="alsa"
3008 alsa_outdev_deps="alsa"
3009 avfoundation_indev_deps="pthreads"
3010 avfoundation_indev_extralibs="-framework Foundation -framework AVFoundation -framework CoreVideo -framework CoreMedia"
3011 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3012 caca_outdev_deps="libcaca"
3013 decklink_indev_deps="decklink threads"
3014 decklink_indev_extralibs="-lstdc++"
3015 decklink_outdev_deps="decklink threads"
3016 decklink_outdev_extralibs="-lstdc++"
3017 dshow_indev_deps="IBaseFilter"
3018 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3019 dv1394_indev_deps="dv1394"
3020 dv1394_indev_select="dv_demuxer"
3021 fbdev_indev_deps="linux_fb_h"
3022 fbdev_outdev_deps="linux_fb_h"
3023 gdigrab_indev_deps="CreateDIBSection"
3024 gdigrab_indev_extralibs="-lgdi32"
3025 gdigrab_indev_select="bmp_decoder"
3026 iec61883_indev_deps="libiec61883"
3027 jack_indev_deps="jack"
3028 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3029 lavfi_indev_deps="avfilter"
3030 libcdio_indev_deps="libcdio"
3031 libdc1394_indev_deps="libdc1394"
3032 libv4l2_indev_deps="libv4l2"
3033 openal_indev_deps="openal"
3034 opengl_outdev_deps="opengl"
3035 oss_indev_deps_any="soundcard_h sys_soundcard_h"
3036 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
3037 pulse_indev_deps="libpulse"
3038 pulse_outdev_deps="libpulse"
3039 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
3040 qtkit_indev_select="qtkit"
3041 sdl2_outdev_deps="sdl2"
3042 sndio_indev_deps="sndio"
3043 sndio_outdev_deps="sndio"
3044 v4l_indev_deps="linux_videodev_h"
3045 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3046 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3047 vfwcap_indev_deps="vfw32 vfwcap_defines"
3048 xcbgrab_indev_deps="libxcb"
3049 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3050 xv_outdev_extralibs="-lXv -lX11 -lXext"
3051
3052 # protocols
3053 async_protocol_deps="threads"
3054 bluray_protocol_deps="libbluray"
3055 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
3056 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3057 ffrtmpcrypt_protocol_select="tcp_protocol"
3058 ffrtmphttp_protocol_deps="!librtmp_protocol"
3059 ffrtmphttp_protocol_select="http_protocol"
3060 ftp_protocol_select="tcp_protocol"
3061 gopher_protocol_select="network"
3062 http_protocol_select="tcp_protocol"
3063 httpproxy_protocol_select="tcp_protocol"
3064 https_protocol_select="tls_protocol"
3065 icecast_protocol_select="http_protocol"
3066 librtmp_protocol_deps="librtmp"
3067 librtmpe_protocol_deps="librtmp"
3068 librtmps_protocol_deps="librtmp"
3069 librtmpt_protocol_deps="librtmp"
3070 librtmpte_protocol_deps="librtmp"
3071 libsmbclient_protocol_deps="libsmbclient gplv3"
3072 libssh_protocol_deps="libssh"
3073 mmsh_protocol_select="http_protocol"
3074 mmst_protocol_select="network"
3075 rtmp_protocol_deps="!librtmp_protocol"
3076 rtmp_protocol_select="tcp_protocol"
3077 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3078 rtmps_protocol_deps="!librtmp_protocol"
3079 rtmps_protocol_select="tls_protocol"
3080 rtmpt_protocol_select="ffrtmphttp_protocol"
3081 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3082 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3083 rtp_protocol_select="udp_protocol"
3084 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3085 sctp_protocol_select="network"
3086 srtp_protocol_select="rtp_protocol srtp"
3087 tcp_protocol_select="network"
3088 tls_gnutls_protocol_deps="gnutls !tls_schannel_protocol !tls_securetransport_protocol"
3089 tls_gnutls_protocol_select="tcp_protocol"
3090 tls_openssl_protocol_deps="openssl !tls_schannel_protocol !tls_securetransport_protocol !tls_gnutls_protocol"
3091 tls_openssl_protocol_select="tcp_protocol"
3092 tls_schannel_protocol_deps="schannel"
3093 tls_schannel_protocol_select="tcp_protocol"
3094 tls_securetransport_protocol_deps="securetransport"
3095 tls_securetransport_protocol_select="tcp_protocol"
3096 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
3097 udp_protocol_select="network"
3098 udplite_protocol_select="network"
3099 unix_protocol_deps="sys_un_h"
3100 unix_protocol_select="network"
3101
3102 # filters
3103 afftfilt_filter_deps="avcodec"
3104 afftfilt_filter_select="fft"
3105 afir_filter_deps="avcodec"
3106 afir_filter_select="fft"
3107 amovie_filter_deps="avcodec avformat"
3108 aresample_filter_deps="swresample"
3109 ass_filter_deps="libass"
3110 atempo_filter_deps="avcodec"
3111 atempo_filter_select="rdft"
3112 azmq_filter_deps="libzmq"
3113 blackframe_filter_deps="gpl"
3114 boxblur_filter_deps="gpl"
3115 bs2b_filter_deps="libbs2b"
3116 colormatrix_filter_deps="gpl"
3117 cover_rect_filter_deps="avcodec avformat gpl"
3118 cropdetect_filter_deps="gpl"
3119 deinterlace_qsv_filter_deps="libmfx"
3120 deinterlace_vaapi_filter_deps="vaapi"
3121 delogo_filter_deps="gpl"
3122 deshake_filter_select="pixelutils"
3123 drawtext_filter_deps="libfreetype"
3124 elbg_filter_deps="avcodec"
3125 eq_filter_deps="gpl"
3126 fftfilt_filter_deps="avcodec"
3127 fftfilt_filter_select="rdft"
3128 find_rect_filter_deps="avcodec avformat gpl"
3129 firequalizer_filter_deps="avcodec"
3130 firequalizer_filter_select="rdft"
3131 flite_filter_deps="libflite"
3132 framerate_filter_select="pixelutils"
3133 frei0r_filter_deps="frei0r dlopen"
3134 frei0r_src_filter_deps="frei0r dlopen"
3135 fspp_filter_deps="gpl"
3136 geq_filter_deps="gpl"
3137 histeq_filter_deps="gpl"
3138 hqdn3d_filter_deps="gpl"
3139 interlace_filter_deps="gpl"
3140 kerndeint_filter_deps="gpl"
3141 ladspa_filter_deps="ladspa dlopen"
3142 mcdeint_filter_deps="avcodec gpl"
3143 movie_filter_deps="avcodec avformat"
3144 mpdecimate_filter_deps="gpl"
3145 mpdecimate_filter_select="pixelutils"
3146 mptestsrc_filter_deps="gpl"
3147 negate_filter_deps="lut_filter"
3148 nnedi_filter_deps="gpl"
3149 ocr_filter_deps="libtesseract"
3150 ocv_filter_deps="libopencv"
3151 owdenoise_filter_deps="gpl"
3152 pan_filter_deps="swresample"
3153 perspective_filter_deps="gpl"
3154 phase_filter_deps="gpl"
3155 pp7_filter_deps="gpl"
3156 pp_filter_deps="gpl postproc"
3157 pullup_filter_deps="gpl"
3158 removelogo_filter_deps="avcodec avformat swscale"
3159 repeatfields_filter_deps="gpl"
3160 resample_filter_deps="avresample"
3161 rubberband_filter_deps="librubberband"
3162 sab_filter_deps="gpl swscale"
3163 scale2ref_filter_deps="swscale"
3164 scale_filter_deps="swscale"
3165 scale_qsv_filter_deps="libmfx"
3166 select_filter_select="pixelutils"
3167 showcqt_filter_deps="avcodec avformat swscale"
3168 showcqt_filter_select="fft"
3169 showfreqs_filter_deps="avcodec"
3170 showfreqs_filter_select="fft"
3171 showspectrum_filter_deps="avcodec"
3172 showspectrum_filter_select="fft"
3173 showspectrumpic_filter_deps="avcodec"
3174 showspectrumpic_filter_select="fft"
3175 signature_filter_deps="gpl avcodec avformat"
3176 smartblur_filter_deps="gpl swscale"
3177 sofalizer_filter_deps="libmysofa avcodec"
3178 sofalizer_filter_select="fft"
3179 spectrumsynth_filter_deps="avcodec"
3180 spectrumsynth_filter_select="fft"
3181 spp_filter_deps="gpl avcodec"
3182 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3183 stereo3d_filter_deps="gpl"
3184 subtitles_filter_deps="avformat avcodec libass"
3185 super2xsai_filter_deps="gpl"
3186 pixfmts_super2xsai_test_deps="super2xsai_filter"
3187 tinterlace_filter_deps="gpl"
3188 tinterlace_merge_test_deps="tinterlace_filter"
3189 tinterlace_pad_test_deps="tinterlace_filter"
3190 uspp_filter_deps="gpl avcodec"
3191 vaguedenoiser_filter_deps="gpl"
3192 vidstabdetect_filter_deps="libvidstab"
3193 vidstabtransform_filter_deps="libvidstab"
3194 libvmaf_filter_deps="libvmaf"
3195 zmq_filter_deps="libzmq"
3196 zoompan_filter_deps="swscale"
3197 zscale_filter_deps="libzimg"
3198 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3199
3200 # examples
3201 avio_dir_cmd_deps="avformat avutil"
3202 avio_reading_deps="avformat avcodec avutil"
3203 decode_audio_example_deps="avcodec avutil"
3204 decode_video_example_deps="avcodec avutil"
3205 demuxing_decoding_example_deps="avcodec avformat avutil"
3206 encode_audio_example_deps="avcodec avutil"
3207 encode_video_example_deps="avcodec avutil"
3208 extract_mvs_example_deps="avcodec avformat avutil"
3209 filter_audio_example_deps="avfilter avutil"
3210 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3211 filtering_video_example_deps="avfilter avcodec avformat avutil"
3212 http_multiclient_example_deps="avformat avutil fork"
3213 hw_decode_example_deps="avcodec avformat avutil"
3214 metadata_example_deps="avformat avutil"
3215 muxing_example_deps="avcodec avformat avutil swscale"
3216 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3217 remuxing_example_deps="avcodec avformat avutil"
3218 resampling_audio_example_deps="avutil swresample"
3219 scaling_video_example_deps="avutil swscale"
3220 transcode_aac_example_deps="avcodec avformat swresample"
3221 transcoding_example_deps="avfilter avcodec avformat avutil"
3222
3223 # libraries, in linking order
3224 avcodec_deps="avutil"
3225 avcodec_select="null_bsf"
3226 avdevice_deps="avformat avcodec avutil"
3227 avfilter_deps="avutil"
3228 avformat_deps="avcodec avutil"
3229 avresample_deps="avutil"
3230 postproc_deps="avutil gpl"
3231 swresample_deps="avutil"
3232 swscale_deps="avutil"
3233
3234 # programs
3235 ffmpeg_deps="avcodec avfilter avformat swresample"
3236 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3237                null_filter
3238                trim_filter"
3239 ffplay_deps="avcodec avformat swscale swresample sdl2"
3240 ffplay_extralibs='$sdl2_extralibs'
3241 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3242 ffprobe_deps="avcodec avformat"
3243 ffserver_deps="avformat fork sarestart"
3244 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3245
3246 # documentation
3247 podpages_deps="perl"
3248 manpages_deps="perl pod2man"
3249 htmlpages_deps="perl"
3250 htmlpages_deps_any="makeinfo_html texi2html"
3251 txtpages_deps="perl makeinfo"
3252 doc_deps_any="manpages htmlpages podpages txtpages"
3253
3254 # default parameters
3255
3256 logfile="ffbuild/config.log"
3257
3258 # installation paths
3259 prefix_default="/usr/local"
3260 bindir_default='${prefix}/bin'
3261 datadir_default='${prefix}/share/ffmpeg'
3262 docdir_default='${prefix}/share/doc/ffmpeg'
3263 incdir_default='${prefix}/include'
3264 libdir_default='${prefix}/lib'
3265 mandir_default='${prefix}/share/man'
3266
3267 # toolchain
3268 ar_default="ar"
3269 cc_default="gcc"
3270 cxx_default="g++"
3271 host_cc_default="gcc"
3272 doxygen_default="doxygen"
3273 install="install"
3274 ln_s_default="ln -s -f"
3275 nm_default="nm -g"
3276 pkg_config_default=pkg-config
3277 ranlib_default="ranlib"
3278 strip_default="strip"
3279 version_script='--version-script'
3280 x86asmexe_default="nasm"
3281 windres_default="windres"
3282 nvcc_default="nvcc"
3283 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3284
3285 # OS
3286 target_os_default=$(tolower $(uname -s))
3287 host_os=$target_os_default
3288
3289 # machine
3290 if test "$target_os_default" = aix; then
3291     arch_default=$(uname -p)
3292     strip_default="strip -X32_64"
3293 else
3294     arch_default=$(uname -m)
3295 fi
3296 cpu="generic"
3297 intrinsics="none"
3298
3299 # configurable options
3300 enable $PROGRAM_LIST
3301 enable $DOCUMENT_LIST
3302 enable $EXAMPLE_LIST
3303 enable $(filter_out avresample $LIBRARY_LIST)
3304 enable stripping
3305
3306 enable asm
3307 enable debug
3308 enable doc
3309 enable faan faandct faanidct
3310 enable optimizations
3311 enable runtime_cpudetect
3312 enable safe_bitstream_reader
3313 enable static
3314 enable swscale_alpha
3315 enable valgrind_backtrace
3316
3317 sws_max_filter_size_default=256
3318 set_default sws_max_filter_size
3319
3320 # build settings
3321 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3322 LIBPREF="lib"
3323 LIBSUF=".a"
3324 FULLNAME='$(NAME)$(BUILDSUF)'
3325 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3326 SLIBPREF="lib"
3327 SLIBSUF=".so"
3328 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3329 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3330 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3331 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3332 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3333 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3334 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3335
3336 asflags_filter=echo
3337 cflags_filter=echo
3338 ldflags_filter=echo
3339
3340 AS_C='-c'
3341 AS_O='-o $@'
3342 CC_C='-c'
3343 CC_E='-E -o $@'
3344 CC_O='-o $@'
3345 CXX_C='-c'
3346 CXX_O='-o $@'
3347 OBJCC_C='-c'
3348 OBJCC_E='-E -o $@'
3349 OBJCC_O='-o $@'
3350 X86ASM_O='-o $@'
3351 LD_O='-o $@'
3352 LD_LIB='-l%'
3353 LD_PATH='-L'
3354 HOSTCC_C='-c'
3355 HOSTCC_E='-E -o $@'
3356 HOSTCC_O='-o $@'
3357 HOSTLD_O='-o $@'
3358 NVCC_C='-c'
3359 NVCC_O='-o $@'
3360
3361 host_extralibs='-lm'
3362 host_cflags_filter=echo
3363 host_ldflags_filter=echo
3364
3365 target_path='$(CURDIR)'
3366
3367 # since the object filename is not given with the -MM flag, the compiler
3368 # is only able to print the basename, and we must add the path ourselves
3369 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3370 DEPFLAGS='-MM'
3371
3372 mkdir -p ffbuild
3373
3374 # find source path
3375 if test -f configure; then
3376     source_path=.
3377 else
3378     source_path=$(cd $(dirname "$0"); pwd)
3379     case "$source_path" in
3380         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3381     esac
3382     test -e "$source_path/config.h" &&
3383         die "Out of tree builds are impossible with config.h in source dir."
3384 fi
3385
3386 for v in "$@"; do
3387     r=${v#*=}
3388     l=${v%"$r"}
3389     r=$(sh_quote "$r")
3390     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3391 done
3392
3393 find_things(){
3394     thing=$1
3395     pattern=$2
3396     file=$source_path/$3
3397     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3398 }
3399
3400 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3401 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3402 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3403 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3404 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3405 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3406 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3407 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3408 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3409
3410 find_things_extern(){
3411     thing=$1
3412     pattern=$2
3413     file=$source_path/$3
3414     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3415 }
3416
3417 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3418 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3419
3420 ALL_COMPONENTS="
3421     $BSF_LIST
3422     $DECODER_LIST
3423     $DEMUXER_LIST
3424     $ENCODER_LIST
3425     $FILTER_LIST
3426     $HWACCEL_LIST
3427     $INDEV_LIST
3428     $MUXER_LIST
3429     $OUTDEV_LIST
3430     $PARSER_LIST
3431     $PROTOCOL_LIST
3432 "
3433
3434 for n in $COMPONENT_LIST; do
3435     v=$(toupper ${n%s})_LIST
3436     eval enable \$$v
3437     eval ${n}_if_any="\$$v"
3438 done
3439
3440 enable $ARCH_EXT_LIST
3441
3442 die_unknown(){
3443     echo "Unknown option \"$1\"."
3444     echo "See $0 --help for available options."
3445     exit 1
3446 }
3447
3448 print_in_columns() {
3449     cols=$(expr $ncols / 24)
3450     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3451 }
3452
3453 show_list() {
3454     suffix=_$1
3455     shift
3456     echo $* | sed s/$suffix//g | print_in_columns
3457     exit 0
3458 }
3459
3460 rand_list(){
3461     IFS=', '
3462     set -- $*
3463     unset IFS
3464     for thing; do
3465         comp=${thing%:*}
3466         prob=${thing#$comp}
3467         prob=${prob#:}
3468         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3469         echo "prob ${prob:-0.5}"
3470         printf '%s\n' $comp
3471     done
3472 }
3473
3474 do_random(){
3475     action=$1
3476     shift
3477     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3478     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3479 }
3480
3481 for opt do
3482     optval="${opt#*=}"
3483     case "$opt" in
3484         --extra-ldflags=*)
3485             add_ldflags $optval
3486         ;;
3487         --extra-ldexeflags=*)
3488             add_ldexeflags $optval
3489         ;;
3490         --extra-ldlibflags=*)
3491             add_ldlibflags $optval
3492         ;;
3493         --extra-libs=*)
3494             add_extralibs $optval
3495         ;;
3496         --disable-devices)
3497             disable $INDEV_LIST $OUTDEV_LIST
3498         ;;
3499         --enable-debug=*)
3500             debuglevel="$optval"
3501         ;;
3502         --disable-programs)
3503             disable $PROGRAM_LIST
3504         ;;
3505         --disable-everything)
3506             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3507         ;;
3508         --disable-all)
3509             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3510             disable $LIBRARY_LIST $PROGRAM_LIST doc
3511             enable avutil
3512         ;;
3513         --enable-random|--disable-random)
3514             action=${opt%%-random}
3515             do_random ${action#--} $COMPONENT_LIST
3516         ;;
3517         --enable-random=*|--disable-random=*)
3518             action=${opt%%-random=*}
3519             do_random ${action#--} $optval
3520         ;;
3521         --enable-*=*|--disable-*=*)
3522             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3523             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3524             eval list=\$$(toupper $thing)_LIST
3525             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3526             list=$(filter "$name" $list)
3527             [ "$list" = "" ] && warn "Option $opt did not match anything"
3528             $action $list
3529         ;;
3530         --enable-yasm|--disable-yasm)
3531             warn "The ${opt} option is only provided for compatibility and will be\n"\
3532                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3533             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3534         ;;
3535         --yasmexe=*)
3536             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3537                  "removed in the future. Use --x86asmexe instead."
3538             x86asmexe="$optval"
3539         ;;
3540         --enable-?*|--disable-?*)
3541             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3542             if is_in $option $COMPONENT_LIST; then
3543                 test $action = disable && action=unset
3544                 eval $action \$$(toupper ${option%s})_LIST
3545             elif is_in $option $CMDLINE_SELECT; then
3546                 $action $option
3547             else
3548                 die_unknown $opt
3549             fi
3550         ;;
3551         --list-*)
3552             NAME="${opt#--list-}"
3553             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3554             NAME=${NAME%s}
3555             eval show_list $NAME \$$(toupper $NAME)_LIST
3556         ;;
3557         --help|-h) show_help
3558         ;;
3559         --quiet|-q) quiet=yes
3560         ;;
3561         --fatal-warnings) enable fatal_warnings
3562         ;;
3563         --libfuzzer=*)
3564             libfuzzer_path="$optval"
3565         ;;
3566         *)
3567             optname="${opt%%=*}"
3568             optname="${optname#--}"
3569             optname=$(echo "$optname" | sed 's/-/_/g')
3570             if is_in $optname $CMDLINE_SET; then
3571                 eval $optname='$optval'
3572             elif is_in $optname $CMDLINE_APPEND; then
3573                 append $optname "$optval"
3574             else
3575                 die_unknown $opt
3576             fi
3577         ;;
3578     esac
3579 done
3580
3581 for e in $env; do
3582     eval "export $e"
3583 done
3584
3585 # Mark specifically enabled, but normally autodetected libraries as requested.
3586 for lib in $AUTODETECT_LIBS; do
3587     enabled $lib && request $lib
3588 done
3589
3590 # Enable platform codecs by default.
3591 enable_weak audiotoolbox
3592
3593 # Enable hwaccels by default.
3594 enable_weak d3d11va dxva2 vaapi vda vdpau videotoolbox_hwaccel xvmc
3595 enable_weak xlib
3596
3597 enable_weak cuda cuvid nvenc vda_framework videotoolbox videotoolbox_encoder
3598
3599 disabled logging && logfile=/dev/null
3600
3601 die_license_disabled() {
3602     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3603 }
3604
3605 die_license_disabled_gpl() {
3606     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3607 }
3608
3609 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3610 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3611
3612 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3613 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3614
3615 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3616
3617 # Disable all the library-specific components if the library itself
3618 # is disabled, see AVCODEC_LIST and following _LIST variables.
3619
3620 disable_components(){
3621     disabled ${1} && disable $(
3622         eval components="\$$(toupper ${1})_COMPONENTS"
3623         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3624     )
3625 }
3626
3627 map 'disable_components $v' $LIBRARY_LIST
3628
3629 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3630 set >> $logfile
3631
3632 test -n "$valgrind" && toolchain="valgrind-memcheck"
3633
3634 enabled ossfuzz && {
3635     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
3636     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
3637 }
3638
3639 case "$toolchain" in
3640     *-asan)
3641         cc_default="${toolchain%-asan}"
3642         add_cflags  -fsanitize=address
3643         add_ldflags -fsanitize=address
3644     ;;
3645     *-msan)
3646         cc_default="${toolchain%-msan}"
3647         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3648         add_ldflags -fsanitize=memory
3649     ;;
3650     *-tsan)
3651         cc_default="${toolchain%-tsan}"
3652         add_cflags  -fsanitize=thread -fPIE
3653         add_ldflags -fsanitize=thread -pie
3654         case "$toolchain" in
3655             gcc-tsan)
3656                 add_cflags  -fPIC
3657                 add_ldflags -fPIC
3658                 ;;
3659         esac
3660     ;;
3661     *-usan)
3662         cc_default="${toolchain%-usan}"
3663         add_cflags  -fsanitize=undefined
3664         add_ldflags -fsanitize=undefined
3665     ;;
3666     valgrind-*)
3667         target_exec_default="valgrind"
3668         case "$toolchain" in
3669             valgrind-massif)
3670                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3671                 ;;
3672             valgrind-memcheck)
3673                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3674                 ;;
3675         esac
3676     ;;
3677     msvc)
3678         # Check whether the current MSVC version needs the C99 converter.
3679         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3680         # support enough of C99 to build ffmpeg. Default to the new
3681         # behaviour if the regexp was unable to match anything, since this
3682         # successfully parses the version number of existing supported
3683         # versions that require the converter (MSVC 2010 and 2012).
3684         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3685         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3686             cc_default="cl"
3687             cxx_default="cl"
3688         else
3689             cc_default="c99wrap cl"
3690             cxx_default="c99wrap cl"
3691         fi
3692         ld_default="$source_path/compat/windows/mslink"
3693         nm_default="dumpbin -symbols"
3694         ar_default="lib"
3695         case "$arch" in
3696         arm*)
3697             as_default="armasm"
3698             ;;
3699         esac
3700         target_os_default="win32"
3701         # Use a relative path for TMPDIR. This makes sure all the
3702         # ffconf temp files are written with a relative path, avoiding
3703         # issues with msys/win32 path conversion for MSVC parameters
3704         # such as -Fo<file> or -out:<file>.
3705         TMPDIR=.
3706     ;;
3707     icl)
3708         cc_default="icl"
3709         ld_default="xilink"
3710         nm_default="dumpbin -symbols"
3711         ar_default="xilib"
3712         target_os_default="win32"
3713         TMPDIR=.
3714     ;;
3715     gcov)
3716         add_cflags  -fprofile-arcs -ftest-coverage
3717         add_ldflags -fprofile-arcs -ftest-coverage
3718     ;;
3719     llvm-cov)
3720         add_cflags -fprofile-arcs -ftest-coverage
3721         add_ldflags --coverage
3722     ;;
3723     hardened)
3724         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3725         add_cflags   -fno-strict-overflow -fstack-protector-all
3726         add_ldflags  -Wl,-z,relro -Wl,-z,now
3727         add_cflags   -fPIE
3728         add_ldexeflags -fPIE -pie
3729     ;;
3730     ?*)
3731         die "Unknown toolchain $toolchain"
3732     ;;
3733 esac
3734
3735 test -n "$cross_prefix" && enable cross_compile
3736
3737 if enabled cross_compile; then
3738     test -n "$arch" && test -n "$target_os" ||
3739         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3740 fi
3741
3742 ar_default="${cross_prefix}${ar_default}"
3743 cc_default="${cross_prefix}${cc_default}"
3744 cxx_default="${cross_prefix}${cxx_default}"
3745 nm_default="${cross_prefix}${nm_default}"
3746 pkg_config_default="${cross_prefix}${pkg_config_default}"
3747 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3748     ranlib_default="${cross_prefix}${ranlib_default} -D"
3749 else
3750     ranlib_default="${cross_prefix}${ranlib_default}"
3751 fi
3752 strip_default="${cross_prefix}${strip_default}"
3753 windres_default="${cross_prefix}${windres_default}"
3754
3755 sysinclude_default="${sysroot}/usr/include"
3756
3757 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3758     target_exec target_os x86asmexe nvcc
3759 enabled cross_compile || host_cc_default=$cc
3760 set_default host_cc
3761
3762 pkg_config_fail_message=""
3763 if ! $pkg_config --version >/dev/null 2>&1; then
3764     warn "$pkg_config not found, library detection may fail."
3765     pkg_config=false
3766 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3767     pkg_config_fail_message="
3768 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3769 fi
3770
3771 if test $doxygen != $doxygen_default && \
3772   ! $doxygen --version >/dev/null 2>&1; then
3773     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3774 fi
3775
3776 exesuf() {
3777     case $1 in
3778         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3779     esac
3780 }
3781
3782 EXESUF=$(exesuf $target_os)
3783 HOSTEXESUF=$(exesuf $host_os)
3784
3785 # set temporary file name
3786 : ${TMPDIR:=$TEMPDIR}
3787 : ${TMPDIR:=$TMP}
3788 : ${TMPDIR:=/tmp}
3789
3790 if [ -n "$tempprefix" ] ; then
3791     mktemp(){
3792         tmpname="$tempprefix.${HOSTNAME}.${UID}"
3793         echo "$tmpname"
3794         mkdir "$tmpname"
3795     }
3796 elif ! check_cmd mktemp -u XXXXXX; then
3797     # simple replacement for missing mktemp
3798     # NOT SAFE FOR GENERAL USE
3799     mktemp(){
3800         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3801         echo "$tmpname"
3802         mkdir "$tmpname"
3803     }
3804 fi
3805
3806 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
3807     die "Unable to create temporary directory in $TMPDIR."
3808
3809 tmpfile(){
3810     tmp="${FFTMPDIR}/test"$2
3811     (set -C; exec > $tmp) 2> /dev/null ||
3812         die "Unable to create temporary file in $FFTMPDIR."
3813     eval $1=$tmp
3814 }
3815
3816 trap 'rm -rf -- "$FFTMPDIR"' EXIT
3817 trap 'exit 2' INT
3818
3819 tmpfile TMPASM .asm
3820 tmpfile TMPC   .c
3821 tmpfile TMPCPP .cpp
3822 tmpfile TMPE   $EXESUF
3823 tmpfile TMPH   .h
3824 tmpfile TMPM   .m
3825 tmpfile TMPO   .o
3826 tmpfile TMPS   .S
3827 tmpfile TMPSH  .sh
3828 tmpfile TMPV   .ver
3829
3830 unset -f mktemp
3831
3832 chmod +x $TMPE
3833
3834 # make sure we can execute files in $TMPDIR
3835 cat > $TMPSH 2>> $logfile <<EOF
3836 #! /bin/sh
3837 EOF
3838 chmod +x $TMPSH >> $logfile 2>&1
3839 if ! $TMPSH >> $logfile 2>&1; then
3840     cat <<EOF
3841 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3842 variable to another directory and make sure that it is not mounted noexec.
3843 EOF
3844     die "Sanity test failed."
3845 fi
3846
3847 armasm_flags(){
3848     for flag; do
3849         case $flag in
3850             # Filter out MSVC cl.exe options from cflags that shouldn't
3851             # be passed to gas-preprocessor
3852             -M[TD]*)                                            ;;
3853             *)                  echo $flag                      ;;
3854         esac
3855    done
3856 }
3857
3858 ccc_flags(){
3859     for flag; do
3860         case $flag in
3861             -std=c99)           echo -c99                       ;;
3862             -mcpu=*)            echo -arch ${flag#*=}           ;;
3863             -mieee)             echo -ieee                      ;;
3864             -O*|-fast)          echo $flag                      ;;
3865             -fno-math-errno)    echo -assume nomath_errno       ;;
3866             -g)                 echo -g3                        ;;
3867             -Wall)              echo -msg_enable level2         ;;
3868             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3869             -Wl,*)              echo $flag                      ;;
3870             -f*|-W*)                                            ;;
3871             *)                  echo $flag                      ;;
3872         esac
3873    done
3874 }
3875
3876 cparser_flags(){
3877     for flag; do
3878         case $flag in
3879             -Wno-switch)             echo -Wno-switch-enum ;;
3880             -Wno-format-zero-length) ;;
3881             -Wdisabled-optimization) ;;
3882             -Wno-pointer-sign)       echo -Wno-other ;;
3883             *)                       echo $flag ;;
3884         esac
3885     done
3886 }
3887
3888 msvc_common_flags(){
3889     for flag; do
3890         case $flag in
3891             # In addition to specifying certain flags under the compiler
3892             # specific filters, they must be specified here as well or else the
3893             # generic catch all at the bottom will print the original flag.
3894             -Wall)                ;;
3895             -Wextra)              ;;
3896             -std=c99)             ;;
3897             # Common flags
3898             -fomit-frame-pointer) ;;
3899             -g)                   echo -Z7 ;;
3900             -fno-math-errno)      ;;
3901             -fno-common)          ;;
3902             -fno-signed-zeros)    ;;
3903             -fPIC)                ;;
3904             -mthumb)              ;;
3905             -march=*)             ;;
3906             -lz)                  echo zlib.lib ;;
3907             -lx264)               echo libx264.lib ;;
3908             -lstdc++)             ;;
3909             -l*)                  echo ${flag#-l}.lib ;;
3910             -LARGEADDRESSAWARE)   echo $flag ;;
3911             -L*)                  echo -libpath:${flag#-L} ;;
3912             *)                    echo $flag ;;
3913         esac
3914     done
3915 }
3916
3917 msvc_flags(){
3918     msvc_common_flags "$@"
3919     for flag; do
3920         case $flag in
3921             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
3922                                        -wd4554 ;;
3923             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3924                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3925                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3926                                        -wd4307 \
3927                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
3928         esac
3929     done
3930 }
3931
3932 icl_flags(){
3933     msvc_common_flags "$@"
3934     for flag; do
3935         case $flag in
3936             # Despite what Intel's documentation says -Wall, which is supported
3937             # on Windows, does enable remarks so disable them here.
3938             -Wall)                echo $flag -Qdiag-disable:remark ;;
3939             -std=c99)             echo -Qstd=c99 ;;
3940             -flto)                echo -ipo ;;
3941         esac
3942     done
3943 }
3944
3945 icc_flags(){
3946     for flag; do
3947         case $flag in
3948             -flto)                echo -ipo ;;
3949             *)                    echo $flag ;;
3950         esac
3951     done
3952 }
3953
3954 pgi_flags(){
3955     for flag; do
3956         case $flag in
3957             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3958             -fomit-frame-pointer) echo -Mnoframe ;;
3959             -g)                   echo -gopt ;;
3960             *)                    echo $flag ;;
3961         esac
3962     done
3963 }
3964
3965 suncc_flags(){
3966     for flag; do
3967         case $flag in
3968             -march=*|-mcpu=*)
3969                 case "${flag#*=}" in
3970                     native)                   echo -xtarget=native       ;;
3971                     v9|niagara)               echo -xarch=sparc          ;;
3972                     ultrasparc)               echo -xarch=sparcvis       ;;
3973                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3974                     i586|pentium)             echo -xchip=pentium        ;;
3975                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3976                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3977                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3978                     pentium4*)          echo -xtarget=pentium4           ;;
3979                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3980                     *-sse3)             echo -xarch=sse3                 ;;
3981                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3982                     bonnell)                   echo -xarch=ssse3         ;;
3983                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3984                     westmere)                  echo -xtarget=westmere    ;;
3985                     silvermont)                echo -xarch=sse4_2        ;;
3986                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3987                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
3988                                                echo -xarch=avx           ;;
3989                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3990                     btver1)                    echo -xarch=amdsse4a      ;;
3991                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
3992                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3993                     k8|opteron|athlon64|athlon-fx)
3994                                                echo -xarch=sse2a         ;;
3995                     athlon*)                   echo -xarch=pentium_proa  ;;
3996                 esac
3997                 ;;
3998             -std=c99)             echo -xc99              ;;
3999             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4000             -fPIC)                echo -KPIC -xcode=pic32 ;;
4001             -W*,*)                echo $flag              ;;
4002             -f*-*|-W*|-mimpure-text)                      ;;
4003             -shared)              echo -G                 ;;
4004             *)                    echo $flag              ;;
4005         esac
4006     done
4007 }
4008
4009 tms470_flags(){
4010     for flag; do
4011         case $flag in
4012             -march=*|-mcpu=*)
4013                 case "${flag#*=}" in
4014                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
4015                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
4016                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
4017                     armv6*|arm11*)          echo -mv=6   ;;
4018                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
4019                                             echo -mv=5e  ;;
4020                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
4021                 esac
4022                 ;;
4023             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
4024             -mfpu=vfp)      echo --float_support=vfpv2        ;;
4025             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
4026             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
4027             -msoft-float)   echo --float_support=vfplib       ;;
4028             -O[0-3]|-mf=*)  echo $flag                        ;;
4029             -g)             echo -g -mn                       ;;
4030             -pds=*)         echo $flag                        ;;
4031             -D*|-I*)        echo $flag                        ;;
4032             --gcc|--abi=*)  echo $flag                        ;;
4033             -me)            echo $flag                        ;;
4034         esac
4035     done
4036 }
4037
4038 probe_cc(){
4039     pfx=$1
4040     _cc=$2
4041     first=$3
4042
4043     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4044     unset _ld_o _ldflags _ld_lib _ld_path
4045     unset _depflags _DEPCMD _DEPFLAGS
4046     _flags_filter=echo
4047
4048     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4049         true # no-op to avoid reading stdin in following checks
4050     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4051         _type=llvm_gcc
4052         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4053         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4054         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4055         _cflags_speed='-O3'
4056         _cflags_size='-Os'
4057     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4058         _type=gcc
4059         gcc_version=$($_cc --version | head -n1)
4060         gcc_basever=$($_cc -dumpversion)
4061         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4062         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4063         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4064         case $gcc_basever in
4065             2) ;;
4066             2.*) ;;
4067             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4068         esac
4069         if [ "$first" = true ]; then
4070             case $gcc_basever in
4071                 4.2*)
4072                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4073             esac
4074         fi
4075         _cflags_speed='-O3'
4076         _cflags_size='-Os'
4077     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4078         _type=icc
4079         _ident=$($_cc --version | head -n1)
4080         _depflags='-MMD'
4081         _cflags_speed='-O3'
4082         _cflags_size='-Os'
4083         _cflags_noopt='-O1'
4084         _flags_filter=icc_flags
4085     elif $_cc -v 2>&1 | grep -q xlc; then
4086         _type=xlc
4087         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4088         _cflags_speed='-O5'
4089         _cflags_size='-O5 -qcompact'
4090     elif $_cc -V 2>/dev/null | grep -q Compaq; then
4091         _type=ccc
4092         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
4093         _DEPFLAGS='-M'
4094         _cflags_speed='-fast'
4095         _cflags_size='-O1'
4096         _flags_filter=ccc_flags
4097     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4098         test -d "$sysroot" || die "No valid sysroot specified."
4099         _type=armcc
4100         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4101         armcc_conf="$PWD/armcc.conf"
4102         $_cc --arm_linux_configure                 \
4103              --arm_linux_config_file="$armcc_conf" \
4104              --configure_sysroot="$sysroot"        \
4105              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4106              die "Error creating armcc configuration file."
4107         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4108         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4109         as_default="${cross_prefix}gcc"
4110         _depflags='-MMD'
4111         _cflags_speed='-O3'
4112         _cflags_size='-Os'
4113     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
4114         _type=tms470
4115         _ident=$($_cc -version | head -n1 | tr -s ' ')
4116         _flags='--gcc --abi=eabi -me'
4117         _cc_e='-ppl -fe=$@'
4118         _cc_o='-fe=$@'
4119         _depflags='-ppa -ppd=$(@:.o=.d)'
4120         _cflags_speed='-O3 -mf=5'
4121         _cflags_size='-O3 -mf=2'
4122         _flags_filter=tms470_flags
4123     elif $_cc -v 2>&1 | grep -q clang; then
4124         _type=clang
4125         _ident=$($_cc --version 2>/dev/null | head -n1)
4126         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4127         _cflags_speed='-O3'
4128         _cflags_size='-Oz'
4129     elif $_cc -V 2>&1 | grep -q Sun; then
4130         _type=suncc
4131         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4132         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4133         _DEPFLAGS='-xM1 -xc99'
4134         _ldflags='-std=c99'
4135         _cflags_speed='-O5'
4136         _cflags_size='-O5 -xspace'
4137         _flags_filter=suncc_flags
4138     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4139         _type=pathscale
4140         _ident=$($_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'
4145     elif $_cc -v 2>&1 | grep -q Open64; then
4146         _type=open64
4147         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4148         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4149         _cflags_speed='-O2'
4150         _cflags_size='-Os'
4151         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4152     elif $_cc -V 2>&1 | grep -q Portland; then
4153         _type=pgi
4154         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
4155         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
4156         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
4157         _cflags_size="-O2 -Munroll=c:1 $opt_common"
4158         _cflags_noopt="-O"
4159         _flags_filter=pgi_flags
4160     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4161         _type=armasm
4162         _ident=$($_cc | head -n1)
4163         # 4509: "This form of conditional instruction is deprecated"
4164         _flags="-nologo -ignore 4509"
4165         _flags_filter=armasm_flags
4166     elif $_cc 2>&1 | grep -q Intel; then
4167         _type=icl
4168         _ident=$($_cc 2>&1 | head -n1)
4169         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4170         # Not only is O3 broken on 13.x+ but it is slower on all previous
4171         # versions (tested) as well.
4172         _cflags_speed="-O2"
4173         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4174         if $_cc 2>&1 | grep -q Linker; then
4175             _ld_o='-out:$@'
4176         else
4177             _ld_o='-Fe$@'
4178         fi
4179         _cc_o='-Fo$@'
4180         _cc_e='-P'
4181         _flags_filter=icl_flags
4182         _ld_lib='lib%.a'
4183         _ld_path='-libpath:'
4184         # -Qdiag-error to make icl error when seeing certain unknown arguments
4185         _flags='-nologo -Qdiag-error:4044,10157'
4186         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4187         # with MSVC which enables it by default.
4188         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4189         disable stripping
4190     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4191         # lld can emulate multiple different linkers; in ms link.exe mode,
4192         # the -? parameter gives the help output which contains an identifyable
4193         # string, while it gives an error in other modes.
4194         _type=lld-link
4195         # The link.exe mode doesn't have a switch for getting the version,
4196         # but we can force it back to gnu mode and get the version from there.
4197         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4198         _ld_o='-out:$@'
4199         _flags_filter=msvc_flags
4200         _ld_lib='lib%.a'
4201         _ld_path='-libpath:'
4202     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4203         _type=msvc
4204         _ident=$($_cc 2>&1 | head -n1)
4205         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4206         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4207         _cflags_speed="-O2"
4208         _cflags_size="-O1"
4209         _cflags_noopt="-O1"
4210         if $_cc -nologo- 2>&1 | grep -q Linker; then
4211             _ld_o='-out:$@'
4212         else
4213             _ld_o='-Fe$@'
4214         fi
4215         _cc_o='-Fo$@'
4216         _cc_e='-P -Fi$@'
4217         _flags_filter=msvc_flags
4218         _ld_lib='lib%.a'
4219         _ld_path='-libpath:'
4220         _flags='-nologo'
4221         disable stripping
4222     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4223         _type=cparser
4224         _ident=$($_cc --version | head -n1)
4225         _depflags='-MMD'
4226         _cflags_speed='-O4'
4227         _cflags_size='-O2'
4228         _flags_filter=cparser_flags
4229     fi
4230
4231     eval ${pfx}_type=\$_type
4232     eval ${pfx}_ident=\$_ident
4233 }
4234
4235 set_ccvars(){
4236     eval ${1}_C=\${_cc_c-\${${1}_C}}
4237     eval ${1}_E=\${_cc_e-\${${1}_E}}
4238     eval ${1}_O=\${_cc_o-\${${1}_O}}
4239
4240     if [ -n "$_depflags" ]; then
4241         eval ${1}_DEPFLAGS=\$_depflags
4242     else
4243         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4244         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4245         eval DEP${1}FLAGS=\$_flags
4246     fi
4247 }
4248
4249 probe_cc cc "$cc" "true"
4250 cflags_filter=$_flags_filter
4251 cflags_speed=$_cflags_speed
4252 cflags_size=$_cflags_size
4253 cflags_noopt=$_cflags_noopt
4254 add_cflags $_flags $_cflags
4255 cc_ldflags=$_ldflags
4256 set_ccvars CC
4257 set_ccvars CXX
4258
4259 probe_cc hostcc "$host_cc"
4260 host_cflags_filter=$_flags_filter
4261 host_cflags_speed=$_cflags_speed
4262 add_host_cflags  $_flags $_cflags
4263 set_ccvars HOSTCC
4264
4265 test -n "$cc_type" && enable $cc_type ||
4266     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4267
4268 : ${as_default:=$cc}
4269 : ${objcc_default:=$cc}
4270 : ${dep_cc_default:=$cc}
4271 : ${ld_default:=$cc}
4272 : ${host_ld_default:=$host_cc}
4273 set_default ar as objcc dep_cc ld ln_s host_ld windres
4274
4275 probe_cc as "$as"
4276 asflags_filter=$_flags_filter
4277 add_asflags $_flags $_cflags
4278 set_ccvars AS
4279
4280 probe_cc objcc "$objcc"
4281 objcflags_filter=$_flags_filter
4282 add_objcflags $_flags $_cflags
4283 set_ccvars OBJC
4284
4285 probe_cc ld "$ld"
4286 ldflags_filter=$_flags_filter
4287 add_ldflags $_flags $_ldflags
4288 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4289 LD_O=${_ld_o-$LD_O}
4290 LD_LIB=${_ld_lib-$LD_LIB}
4291 LD_PATH=${_ld_path-$LD_PATH}
4292
4293 probe_cc hostld "$host_ld"
4294 host_ldflags_filter=$_flags_filter
4295 add_host_ldflags $_flags $_ldflags
4296 HOSTLD_O=${_ld_o-$HOSTLD_O}
4297
4298 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4299     probe_cc depcc "$dep_cc"
4300     CCDEP=${_DEPCMD:-$DEPCMD}
4301     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4302     DEPCCFLAGS=$_flags
4303 fi
4304
4305 if $ar 2>&1 | grep -q Microsoft; then
4306     arflags="-nologo"
4307     ar_o='-out:$@'
4308 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
4309     arflags="rq"
4310     ar_o='$@'
4311 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
4312     arflags='-Xany -r -c'
4313     ar_o='$@'
4314 elif $ar 2>&1 | grep -q "\[D\] "; then
4315     arflags="rcD"
4316     ar_o='$@'
4317 else
4318     arflags="rc"
4319     ar_o='$@'
4320 fi
4321
4322 add_cflags $extra_cflags
4323 add_cxxflags $extra_cxxflags
4324 add_objcflags $extra_objcflags
4325 add_asflags $extra_cflags
4326
4327 if test -n "$sysroot"; then
4328     case "$cc_type" in
4329         gcc|llvm_gcc|clang)
4330             add_cppflags --sysroot="$sysroot"
4331             add_ldflags --sysroot="$sysroot"
4332 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
4333             add_cppflags -isysroot "$sysroot"
4334             add_ldflags -isysroot "$sysroot"
4335         ;;
4336         tms470)
4337             add_cppflags -I"$sysinclude"
4338             add_ldflags  --sysroot="$sysroot"
4339         ;;
4340     esac
4341 fi
4342
4343 if test "$cpu" = host; then
4344     enabled cross_compile &&
4345         die "--cpu=host makes no sense when cross-compiling."
4346
4347     case "$cc_type" in
4348         gcc|llvm_gcc)
4349             check_native(){
4350                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4351                 sed -n "/cc1.*$1=/{
4352                             s/.*$1=\\([^ ]*\\).*/\\1/
4353                             p
4354                             q
4355                         }" $TMPE
4356             }
4357             cpu=$(check_native -march || check_native -mcpu)
4358         ;;
4359         clang)
4360             check_native(){
4361                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4362                 sed -n "/cc1.*-target-cpu /{
4363                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4364                             p
4365                             q
4366                         }" $TMPE
4367             }
4368             cpu=$(check_native -march)
4369         ;;
4370     esac
4371
4372     test "${cpu:-host}" = host &&
4373         die "--cpu=host not supported with compiler $cc"
4374 fi
4375
4376 # Deal with common $arch aliases
4377 case "$arch" in
4378     aarch64|arm64)
4379         arch="aarch64"
4380     ;;
4381     arm*|iPad*|iPhone*)
4382         arch="arm"
4383     ;;
4384     mips*|IP*)
4385         case "$arch" in
4386         *el)
4387             add_cppflags -EL
4388             add_ldflags -EL
4389         ;;
4390         *eb)
4391             add_cppflags -EB
4392             add_ldflags -EB
4393         ;;
4394         esac
4395         arch="mips"
4396     ;;
4397     parisc*|hppa*)
4398         arch="parisc"
4399     ;;
4400     "Power Macintosh"|ppc*|powerpc*)
4401         arch="ppc"
4402     ;;
4403     s390|s390x)
4404         arch="s390"
4405     ;;
4406     sh4|sh)
4407         arch="sh4"
4408     ;;
4409     sun4*|sparc*)
4410         arch="sparc"
4411     ;;
4412     tilegx|tile-gx)
4413         arch="tilegx"
4414     ;;
4415     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4416         arch="x86"
4417     ;;
4418 esac
4419
4420 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4421 enable $arch
4422
4423 # Add processor-specific flags
4424 if enabled aarch64; then
4425
4426     case $cpu in
4427         armv*)
4428             cpuflags="-march=$cpu"
4429         ;;
4430         *)
4431             cpuflags="-mcpu=$cpu"
4432         ;;
4433     esac
4434
4435 elif enabled alpha; then
4436
4437     cpuflags="-mcpu=$cpu"
4438
4439 elif enabled arm; then
4440
4441     check_arm_arch() {
4442         check_cpp_condition stddef.h \
4443             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4444             $cpuflags
4445     }
4446
4447     probe_arm_arch() {
4448         if   check_arm_arch 4;        then echo armv4
4449         elif check_arm_arch 4T;       then echo armv4t
4450         elif check_arm_arch 5;        then echo armv5
4451         elif check_arm_arch 5E;       then echo armv5e
4452         elif check_arm_arch 5T;       then echo armv5t
4453         elif check_arm_arch 5TE;      then echo armv5te
4454         elif check_arm_arch 5TEJ;     then echo armv5te
4455         elif check_arm_arch 6;        then echo armv6
4456         elif check_arm_arch 6J;       then echo armv6j
4457         elif check_arm_arch 6K;       then echo armv6k
4458         elif check_arm_arch 6Z;       then echo armv6z
4459         elif check_arm_arch 6ZK;      then echo armv6zk
4460         elif check_arm_arch 6T2;      then echo armv6t2
4461         elif check_arm_arch 7;        then echo armv7
4462         elif check_arm_arch 7A  7_A;  then echo armv7-a
4463         elif check_arm_arch 7S;       then echo armv7-a
4464         elif check_arm_arch 7R  7_R;  then echo armv7-r
4465         elif check_arm_arch 7M  7_M;  then echo armv7-m
4466         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4467         elif check_arm_arch 8A  8_A;  then echo armv8-a
4468         fi
4469     }
4470
4471     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4472
4473     case $cpu in
4474         armv*)
4475             cpuflags="-march=$cpu"
4476             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4477         ;;
4478         *)
4479             cpuflags="-mcpu=$cpu"
4480             case $cpu in
4481                 cortex-a*)                               subarch=armv7a  ;;
4482                 cortex-r*)                               subarch=armv7r  ;;
4483                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4484                 arm11*)                                  subarch=armv6   ;;
4485                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4486                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4487                 *)                             subarch=$(probe_arm_arch) ;;
4488             esac
4489         ;;
4490     esac
4491
4492     case "$subarch" in
4493         armv5t*)    enable fast_clz                ;;
4494         armv[6-8]*)
4495             enable fast_clz
4496             disabled fast_unaligned || enable fast_unaligned
4497             ;;
4498     esac
4499
4500 elif enabled avr32; then
4501
4502     case $cpu in
4503         ap7[02]0[0-2])
4504             subarch="avr32_ap"
4505             cpuflags="-mpart=$cpu"
4506         ;;
4507         ap)
4508             subarch="avr32_ap"
4509             cpuflags="-march=$cpu"
4510         ;;
4511         uc3[ab]*)
4512             subarch="avr32_uc"
4513             cpuflags="-mcpu=$cpu"
4514         ;;
4515         uc)
4516             subarch="avr32_uc"
4517             cpuflags="-march=$cpu"
4518         ;;
4519     esac
4520
4521 elif enabled bfin; then
4522
4523     cpuflags="-mcpu=$cpu"
4524
4525 elif enabled mips; then
4526
4527     cpuflags="-march=$cpu"
4528
4529     if [ "$cpu" != "generic" ]; then
4530         disable mips32r2
4531         disable mips32r5
4532         disable mips64r2
4533         disable mips32r6
4534         disable mips64r6
4535         disable loongson2
4536         disable loongson3
4537
4538         case $cpu in
4539             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4540                 enable mips32r2
4541                 disable msa
4542             ;;
4543             p5600|i6400|p6600)
4544                 disable mipsdsp
4545                 disable mipsdspr2
4546             ;;
4547             loongson*)
4548                 enable loongson2
4549                 enable loongson3
4550                 enable local_aligned_8 local_aligned_16 local_aligned_32
4551                 enable simd_align_16
4552                 enable fast_64bit
4553                 enable fast_clz
4554                 enable fast_cmov
4555                 enable fast_unaligned
4556                 disable aligned_stack
4557                 disable mipsfpu
4558                 disable mipsdsp
4559                 disable mipsdspr2
4560                 case $cpu in
4561                     loongson3*)
4562                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4563                     ;;
4564                     loongson2e)
4565                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4566                     ;;
4567                     loongson2f)
4568                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4569                     ;;
4570                 esac
4571             ;;
4572             *)
4573                 # Unknown CPU. Disable everything.
4574                 warn "unknown CPU. Disabling all MIPS optimizations."
4575                 disable mipsfpu
4576                 disable mipsdsp
4577                 disable mipsdspr2
4578                 disable msa
4579                 disable mmi
4580             ;;
4581         esac
4582
4583         case $cpu in
4584             24kc)
4585                 disable mipsfpu
4586                 disable mipsdsp
4587                 disable mipsdspr2
4588             ;;
4589             24kf*)
4590                 disable mipsdsp
4591                 disable mipsdspr2
4592             ;;
4593             24kec|34kc|1004kc)
4594                 disable mipsfpu
4595                 disable mipsdspr2
4596             ;;
4597             24kef*|34kf*|1004kf*)
4598                 disable mipsdspr2
4599             ;;
4600             74kc)
4601                 disable mipsfpu
4602             ;;
4603             p5600)
4604                 enable mips32r5
4605                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4606             ;;
4607             i6400)
4608                 enable mips64r6
4609                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4610             ;;
4611             p6600)
4612                 enable mips64r6
4613                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4614             ;;
4615         esac
4616     else
4617         # We do not disable anything. Is up to the user to disable the unwanted features.
4618         warn 'generic cpu selected'
4619     fi
4620
4621 elif enabled ppc; then
4622
4623     disable ldbrx
4624
4625     case $(tolower $cpu) in
4626         601|ppc601|powerpc601)
4627             cpuflags="-mcpu=601"
4628             disable altivec
4629         ;;
4630         603*|ppc603*|powerpc603*)
4631             cpuflags="-mcpu=603"
4632             disable altivec
4633         ;;
4634         604*|ppc604*|powerpc604*)
4635             cpuflags="-mcpu=604"
4636             disable altivec
4637         ;;
4638         g3|75*|ppc75*|powerpc75*)
4639             cpuflags="-mcpu=750"
4640             disable altivec
4641         ;;
4642         g4|745*|ppc745*|powerpc745*)
4643             cpuflags="-mcpu=7450"
4644             disable vsx
4645         ;;
4646         74*|ppc74*|powerpc74*)
4647             cpuflags="-mcpu=7400"
4648             disable vsx
4649         ;;
4650         g5|970|ppc970|powerpc970)
4651             cpuflags="-mcpu=970"
4652             disable vsx
4653         ;;
4654         power[3-6]*)
4655             cpuflags="-mcpu=$cpu"
4656             disable vsx
4657         ;;
4658         power[7-8]*)
4659             cpuflags="-mcpu=$cpu"
4660         ;;
4661         cell)
4662             cpuflags="-mcpu=cell"
4663             enable ldbrx
4664             disable vsx
4665         ;;
4666         e500mc)
4667             cpuflags="-mcpu=e500mc"
4668             disable altivec
4669         ;;
4670         e500v2)
4671             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4672             disable altivec
4673             disable dcbzl
4674         ;;
4675         e500)
4676             cpuflags="-mcpu=8540 -mhard-float"
4677             disable altivec
4678             disable dcbzl
4679         ;;
4680     esac
4681
4682 elif enabled sparc; then
4683
4684     case $cpu in
4685         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4686             cpuflags="-mcpu=$cpu"
4687         ;;
4688         ultrasparc*|niagara[234])
4689             cpuflags="-mcpu=$cpu"
4690         ;;
4691     esac
4692
4693 elif enabled x86; then
4694
4695     case $cpu in
4696         i[345]86|pentium)
4697             cpuflags="-march=$cpu"
4698             disable i686
4699             disable mmx
4700         ;;
4701         # targets that do NOT support nopl and conditional mov (cmov)
4702         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4703             cpuflags="-march=$cpu"
4704             disable i686
4705         ;;
4706         # targets that do support nopl and conditional mov (cmov)
4707         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4708         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4709         |amdfam10|barcelona|b[dt]ver*|znver*)
4710             cpuflags="-march=$cpu"
4711             enable i686
4712             enable fast_cmov
4713         ;;
4714         # targets that do support conditional mov but on which it's slow
4715         pentium4|pentium4m|prescott|nocona)
4716             cpuflags="-march=$cpu"
4717             enable i686
4718             disable fast_cmov
4719         ;;
4720     esac
4721
4722 fi
4723
4724 if [ "$cpu" != generic ]; then
4725     add_cflags  $cpuflags
4726     add_asflags $cpuflags
4727     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4728 fi
4729
4730 # compiler sanity check
4731 check_exec <<EOF
4732 int main(void){ return 0; }
4733 EOF
4734 if test "$?" != 0; then
4735     echo "$cc is unable to create an executable file."
4736     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4737         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4738         echo "Only do this if you know what cross compiling means."
4739     fi
4740     die "C compiler test failed."
4741 fi
4742
4743 add_cppflags -D_ISOC99_SOURCE
4744 add_cxxflags -D__STDC_CONSTANT_MACROS
4745 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4746
4747 # some compilers silently accept -std=c11, so we also need to check that the
4748 # version macro is defined properly
4749 if test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L"; then
4750     add_cflags -std=c11
4751 else
4752     check_cflags -std=c99
4753 fi
4754
4755 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4756 #include <stdlib.h>
4757 EOF
4758 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4759 #include <stdlib.h>
4760 EOF
4761
4762 add_host_cppflags -D_ISOC99_SOURCE
4763 check_host_cflags -std=c99
4764 check_host_cflags -Wall
4765 check_host_cflags $host_cflags_speed
4766
4767 check_64bit(){
4768     arch32=$1
4769     arch64=$2
4770     expr=$3
4771     check_code cc "" "int test[2*($expr) - 1]" &&
4772         subarch=$arch64 || subarch=$arch32
4773 }
4774
4775 case "$arch" in
4776     aarch64|alpha|ia64)
4777         spic=$shared
4778     ;;
4779     mips)
4780         check_64bit mips mips64 '_MIPS_SIM > 1'
4781         spic=$shared
4782     ;;
4783     parisc)
4784         check_64bit parisc parisc64 'sizeof(void *) > 4'
4785         spic=$shared
4786     ;;
4787     ppc)
4788         check_64bit ppc ppc64 'sizeof(void *) > 4'
4789         spic=$shared
4790     ;;
4791     s390)
4792         check_64bit s390 s390x 'sizeof(void *) > 4'
4793         spic=$shared
4794     ;;
4795     sparc)
4796         check_64bit sparc sparc64 'sizeof(void *) > 4'
4797         spic=$shared
4798     ;;
4799     x86)
4800         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4801         # Treat x32 as x64 for now. Note it also needs spic=$shared
4802         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4803             subarch=x86_64
4804         if test "$subarch" = "x86_64"; then
4805             spic=$shared
4806         fi
4807     ;;
4808     ppc)
4809         check_cc <<EOF && subarch="ppc64"
4810         int test[(int)sizeof(char*) - 7];
4811 EOF
4812     ;;
4813 esac
4814
4815 enable $subarch
4816 enabled spic && enable_weak pic
4817
4818 enabled x86_64 && objformat=elf64 || objformat="elf32"
4819
4820 # OS specific
4821 case $target_os in
4822     aix)
4823         SHFLAGS=-shared
4824         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4825         enabled shared && add_ldflags -Wl,-brtl
4826         ;;
4827     android)
4828         disable symver
4829         enable section_data_rel_ro
4830         SLIB_INSTALL_NAME='$(SLIBNAME)'
4831         SLIB_INSTALL_LINKS=
4832         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4833         ;;
4834     haiku)
4835         prefix_default="/boot/common"
4836         network_extralibs="-lnetwork"
4837         host_extralibs=
4838         ;;
4839     sunos)
4840         SHFLAGS='-shared -Wl,-h,$$(@F)'
4841         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4842         network_extralibs="-lsocket -lnsl"
4843         add_cppflags -D__EXTENSIONS__
4844         # When using suncc to build, the Solaris linker will mark
4845         # an executable with each instruction set encountered by
4846         # the Solaris assembler.  As our libraries contain their own
4847         # guards for processor-specific code, instead suppress
4848         # generation of the HWCAPS ELF section on Solaris x86 only.
4849         enabled_all suncc x86 &&
4850             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4851             add_ldflags -Wl,-M,mapfile
4852         nm_default='nm -P -g'
4853         version_script='-M'
4854         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
4855         ;;
4856     netbsd)
4857         disable symver
4858         oss_indev_extralibs="-lossaudio"
4859         oss_outdev_extralibs="-lossaudio"
4860         enabled gcc || check_ldflags -Wl,-zmuldefs
4861         ;;
4862     openbsd|bitrig)
4863         disable symver
4864         SHFLAGS='-shared'
4865         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4866         SLIB_INSTALL_LINKS=
4867         oss_indev_extralibs="-lossaudio"
4868         oss_outdev_extralibs="-lossaudio"
4869         ;;
4870     dragonfly)
4871         disable symver
4872         ;;
4873     freebsd)
4874         ;;
4875     bsd/os)
4876         add_extralibs -lpoll -lgnugetopt
4877         strip="strip -d"
4878         ;;
4879     darwin)
4880         enabled ppc && add_asflags -force_cpusubtype_ALL
4881         install_name_dir_default='$(SHLIBDIR)'
4882         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4883         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4884         strip="${strip} -x"
4885         add_ldflags -Wl,-dynamic,-search_paths_first
4886         SLIBSUF=".dylib"
4887         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4888         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4889         objformat="macho"
4890         enabled x86_64 && objformat="macho64" || objformat="macho32"
4891         enabled_any pic shared x86_64 ||
4892             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4893         check_header dispatch/dispatch.h &&
4894             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
4895         version_script='-exported_symbols_list'
4896         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
4897         ;;
4898     msys*)
4899         die "Native MSYS builds are discouraged, please use the MINGW environment."
4900         ;;
4901     mingw32*|mingw64*)
4902         if test $target_os = "mingw32ce"; then
4903             disable network
4904         else
4905             target_os=mingw32
4906         fi
4907         LIBTARGET=i386
4908         if enabled x86_64; then
4909             LIBTARGET="i386:x86-64"
4910         elif enabled arm; then
4911             LIBTARGET=arm-wince
4912         fi
4913         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4914         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4915         shlibdir_default="$bindir_default"
4916         SLIBPREF=""
4917         SLIBSUF=".dll"
4918         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4919         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4920         dlltool="${cross_prefix}dlltool"
4921         if check_cmd lib.exe -list; then
4922             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4923             if enabled x86_64; then
4924                 LIBTARGET=x64
4925             fi
4926         elif check_cmd $dlltool --version; then
4927             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4928         fi
4929         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4930         SLIB_INSTALL_LINKS=
4931         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4932         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4933         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--disable-auto-image-base'
4934         enabled x86_64 && objformat="win64" || objformat="win32"
4935         ranlib=:
4936         enable dos_paths
4937         check_ldflags -Wl,--nxcompat,--dynamicbase
4938         # Lets work around some stupidity in binutils.
4939         # ld will strip relocations from executables even though we need them
4940         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4941         # however ld then forgets what the entry point should be (oops) so we
4942         # have to manually (re)set it.
4943         if enabled x86_32; then
4944             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
4945         elif enabled x86_64; then
4946             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
4947             check_ldflags -Wl,--high-entropy-va # binutils 2.25
4948             # Set image base >4GB for extra entropy with HEASLR
4949             add_ldexeflags -Wl,--image-base,0x140000000
4950             append SHFLAGS -Wl,--image-base,0x180000000
4951         fi
4952         ;;
4953     win32|win64)
4954         disable symver
4955         if enabled shared; then
4956             # Link to the import library instead of the normal static library
4957             # for shared libs.
4958             LD_LIB='%.lib'
4959             # Cannot build both shared and static libs with MSVC or icl.
4960             disable static
4961         fi
4962         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4963         shlibdir_default="$bindir_default"
4964         SLIBPREF=""
4965         SLIBSUF=".dll"
4966         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4967         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4968         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4969         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4970         SLIB_INSTALL_LINKS=
4971         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4972         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4973         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4974         enabled x86_64 && objformat="win64" || objformat="win32"
4975         ranlib=:
4976         enable dos_paths
4977         ;;
4978     cygwin*)
4979         target_os=cygwin
4980         shlibdir_default="$bindir_default"
4981         SLIBPREF="cyg"
4982         SLIBSUF=".dll"
4983         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4984         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4985         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4986         SLIB_INSTALL_LINKS=
4987         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4988         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4989         enabled x86_64 && objformat="win64" || objformat="win32"
4990         enable dos_paths
4991         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4992         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4993         ;;
4994     *-dos|freedos|opendos)
4995         network_extralibs="-lsocket"
4996         objformat="coff"
4997         enable dos_paths
4998         add_cppflags -U__STRICT_ANSI__
4999         ;;
5000     linux)
5001         enable dv1394
5002         enable section_data_rel_ro
5003         ;;
5004     irix*)
5005         target_os=irix
5006         ranlib="echo ignoring ranlib"
5007         ;;
5008     os/2*)
5009         strip="lxlite -CS"
5010         objformat="aout"
5011         add_cppflags -D_GNU_SOURCE
5012         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5013         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5014         LIBSUF="_s.a"
5015         SLIBPREF=""
5016         SLIBSUF=".dll"
5017         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5018         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5019         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5020             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5021             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5022             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5023             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5024         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5025             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5026         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5027         SLIB_INSTALL_LINKS=
5028         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5029         enable dos_paths
5030         enable_weak os2threads
5031         ;;
5032     gnu/kfreebsd)
5033         add_cppflags -D_BSD_SOURCE
5034         ;;
5035     gnu)
5036         ;;
5037     qnx)
5038         add_cppflags -D_QNX_SOURCE
5039         network_extralibs="-lsocket"
5040         ;;
5041     symbian)
5042         SLIBSUF=".dll"
5043         enable dos_paths
5044         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5045         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5046         add_ldflags -Wl,--target1-abs,--no-undefined \
5047                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5048                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5049         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5050                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5051                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5052         ;;
5053     osf1)
5054         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
5055         ;;
5056     minix)
5057         ;;
5058     none)
5059         ;;
5060     *)
5061         die "Unknown OS '$target_os'."
5062         ;;
5063 esac
5064
5065 # test if creating links works
5066 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5067 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5068 mkdir "$link_dest"
5069 $ln_s "$link_dest" "$link_name"
5070 touch "$link_dest/test_file"
5071 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5072     # create link to source path
5073     [ -e src ] && rm src
5074     $ln_s "$source_path" src
5075     source_link=src
5076 else
5077     # creating directory links doesn't work
5078     # fall back to using the full source path
5079     source_link="$source_path"
5080 fi
5081 # cleanup
5082 rm -r "$link_dest"
5083 rm -r "$link_name"
5084
5085 # determine libc flavour
5086
5087 probe_libc(){
5088     pfx=$1
5089     pfx_no_=${pfx%_}
5090     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5091     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5092         eval ${pfx}libc_type=uclibc
5093         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5094     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5095         eval ${pfx}libc_type=glibc
5096         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5097     # MinGW headers can be installed on Cygwin, so check for newlib first.
5098     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5099         eval ${pfx}libc_type=newlib
5100         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5101     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5102     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5103         eval ${pfx}libc_type=mingw64
5104         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5105             add_compat msvcrt/snprintf.o
5106             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5107         fi
5108         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5109         eval test \$${pfx_no_}cc_type = "gcc" &&
5110             add_${pfx}cppflags -D__printf__=__gnu_printf__
5111     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5112          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5113         eval ${pfx}libc_type=mingw32
5114         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5115             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5116             die "ERROR: MinGW32 runtime version must be >= 3.15."
5117         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5118         check_${pfx}cpp_condition _mingw.h "defined(_WIN32_WINNT) && _WIN32_WINNT >= 0x0502" ||
5119             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
5120         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5121             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5122         eval test \$${pfx_no_}cc_type = "gcc" &&
5123             add_${pfx}cppflags -D__printf__=__gnu_printf__
5124     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5125         eval ${pfx}libc_type=msvcrt
5126         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5127             if [ "$pfx" = host_ ]; then
5128                 add_host_cppflags -Dsnprintf=_snprintf
5129             else
5130                 add_compat strtod.o strtod=avpriv_strtod
5131                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5132                                              _snprintf=avpriv_snprintf  \
5133                                              vsnprintf=avpriv_vsnprintf
5134             fi
5135         fi
5136         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5137         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5138         # 0x601 by default unless something else is set by the user.
5139         # This can easily lead to us detecting functions only present
5140         # in such new versions and producing binaries requiring windows 7.0.
5141         # Therefore explicitly set the default to XP unless the user has
5142         # set something else on the command line.
5143         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5144         # family. For these cases, configure is free to use any functions
5145         # found in the SDK headers by default. (Alternatively, we could force
5146         # _WIN32_WINNT to 0x0602 in that case.)
5147         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5148             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
5149 #ifdef WINAPI_FAMILY
5150 #include <winapifamily.h>
5151 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5152 #error not desktop
5153 #endif
5154 #endif
5155 EOF
5156         if [ "$pfx" = "" ]; then
5157             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5158             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5159         fi
5160     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5161         eval ${pfx}libc_type=klibc
5162     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5163         eval ${pfx}libc_type=bionic
5164     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5165         eval ${pfx}libc_type=solaris
5166         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5167     fi
5168     check_${pfx}cc <<EOF
5169 #include <time.h>
5170 void *v = localtime_r;
5171 EOF
5172 test "$?" != 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
5173 #include <time.h>
5174 void *v = localtime_r;
5175 EOF
5176
5177 }
5178
5179 probe_libc
5180 test -n "$libc_type" && enable libc_$libc_type
5181 probe_libc host_
5182 test -n "$host_libc_type" && enable host_libc_$host_libc_type
5183
5184 case $libc_type in
5185     bionic)
5186         add_compat strtod.o strtod=avpriv_strtod
5187         ;;
5188 esac
5189
5190 # hacks for compiler/libc/os combinations
5191
5192 if enabled_all tms470 libc_glibc; then
5193     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
5194     add_cppflags -D__USER_LABEL_PREFIX__=
5195     add_cppflags -D__builtin_memset=memset
5196     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
5197     add_cflags   -pds=48    # incompatible redefinition of macro
5198 fi
5199
5200 if enabled_all ccc libc_glibc; then
5201     add_ldflags -Wl,-z,now  # calls to libots crash without this
5202 fi
5203
5204 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5205     add_cppflags '-I\$(SRC_PATH)/compat/float'
5206
5207 esc(){
5208     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
5209 }
5210
5211 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
5212
5213 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5214
5215 set_default libdir
5216 : ${shlibdir_default:="$libdir"}
5217 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5218
5219 set_default $PATHS_LIST
5220 set_default nm
5221
5222 # we need to build at least one lib type
5223 if ! enabled_any static shared; then
5224     cat <<EOF
5225 At least one library type must be built.
5226 Specify --enable-static to build the static libraries or --enable-shared to
5227 build the shared libraries as well. To only build the shared libraries specify
5228 --disable-static in addition to --enable-shared.
5229 EOF
5230     exit 1
5231 fi
5232
5233 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5234
5235 enable_weak_pic() {
5236     disabled pic && return
5237     enable pic
5238     add_cppflags -DPIC
5239     case "$target_os" in
5240     mingw*|cygwin*)
5241         ;;
5242     *)
5243         add_cflags -fPIC
5244         ;;
5245     esac
5246     add_asflags  -fPIC
5247 }
5248
5249 enabled pic && enable_weak_pic
5250
5251 check_cc <<EOF || die "Symbol mangling check failed."
5252 int ff_extern;
5253 EOF
5254 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5255 extern_prefix=${sym%%ff_extern*}
5256
5257 check_cc <<EOF && enable_weak inline_asm
5258 void foo(void) { __asm__ volatile ("" ::); }
5259 EOF
5260
5261 _restrict=
5262 for restrict_keyword in restrict __restrict__ __restrict; do
5263     check_cc <<EOF && _restrict=$restrict_keyword && break
5264 void foo(char * $restrict_keyword p);
5265 EOF
5266 done
5267
5268 check_cc <<EOF && enable pragma_deprecated
5269 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
5270 EOF
5271
5272 check_cc <<EOF && enable attribute_packed
5273 struct { int x; } __attribute__((packed)) x;
5274 EOF
5275
5276 check_cc <<EOF && enable attribute_may_alias
5277 union { int x; } __attribute__((may_alias)) x;
5278 EOF
5279
5280 check_cc <<EOF || die "endian test failed"
5281 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5282 EOF
5283 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5284
5285 if ! enabled ppc64 || enabled bigendian; then
5286     disable vsx
5287 fi
5288
5289 check_gas() {
5290     log "check_gas using '$as' as AS"
5291     # :vararg is used on aarch64, arm and ppc altivec
5292     check_as <<EOF || return 1
5293 .macro m n, y:vararg=0
5294 \n: .int \y
5295 .endm
5296 m x
5297 EOF
5298     # .altmacro is only used in arm asm
5299     ! enabled arm || check_as <<EOF || return 1
5300 .altmacro
5301 EOF
5302     enable gnu_as
5303     return 0
5304 }
5305
5306 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5307     nogas=:
5308     enabled_any arm aarch64 && nogas=die
5309     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5310     as_noop=-v
5311
5312     case $as_type in
5313         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5314         gcc)  gaspp_as_type=gas ;;
5315         *)    gaspp_as_type=$as_type ;;
5316     esac
5317
5318     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5319
5320     test "${as#*gas-preprocessor.pl}" != "$as" ||
5321     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5322         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5323
5324     if ! check_gas ; then
5325         as=${gas:=$as}
5326         check_gas || \
5327             $nogas "GNU assembler not found, install/update gas-preprocessor"
5328     fi
5329
5330     check_as <<EOF && enable as_func
5331 .func test
5332 .endfunc
5333 EOF
5334 fi
5335
5336 check_inline_asm inline_asm_labels '"1:\n"'
5337
5338 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5339
5340 if enabled aarch64; then
5341     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5342     # internal assembler in clang 3.3 does not support this instruction
5343     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5344     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5345
5346     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5347
5348 elif enabled alpha; then
5349
5350     check_cflags -mieee
5351
5352 elif enabled arm; then
5353
5354     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
5355
5356     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
5357 float func(float a, float b){ return a+b; }
5358 EOF
5359
5360     enabled thumb && check_cflags -mthumb || check_cflags -marm
5361
5362     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
5363         enable vfp_args
5364     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5365         enable vfp_args
5366     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5367         case "${cross_prefix:-$cc}" in
5368             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
5369             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
5370 __asm__ (".eabi_attribute 28, 1");
5371 int main(void) { return 0; }
5372 EOF
5373         esac
5374         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5375     fi
5376
5377     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5378     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5379     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5380     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5381     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5382     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5383     enabled setend  && check_insn setend  'setend be'
5384
5385     [ $target_os = linux ] || [ $target_os = android ] ||
5386         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5387             $ARCH_EXT_LIST_ARM
5388
5389     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5390
5391     check_as <<EOF && enable as_dn_directive
5392 ra .dn d0.i16
5393 .unreq ra
5394 EOF
5395     check_as <<EOF && enable as_fpu_directive
5396 .fpu neon
5397 EOF
5398
5399     # llvm's integrated assembler supports .object_arch from llvm 3.5
5400     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5401         check_as <<EOF && enable as_object_arch
5402 .object_arch armv4
5403 EOF
5404
5405     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5406
5407 elif enabled mips; then
5408
5409     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5410     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5411     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5412
5413     # Enable minimum ISA based on selected options
5414     if enabled mips64; then
5415         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5416         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5417         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5418     else
5419         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5420         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5421         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5422         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5423     fi
5424
5425     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5426     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5427     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
5428     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5429     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5430
5431     if enabled bigendian && enabled msa; then
5432         disable msa
5433     fi
5434
5435 elif enabled parisc; then
5436
5437     if enabled gcc; then
5438         case $($cc -dumpversion) in
5439             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5440         esac
5441     fi
5442
5443 elif enabled ppc; then
5444
5445     enable local_aligned_8 local_aligned_16 local_aligned_32
5446
5447     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5448     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5449     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5450     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5451
5452     # AltiVec flags: The FSF version of GCC differs from the Apple version
5453     if enabled altivec; then
5454         check_cflags -maltivec -mabi=altivec &&
5455         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
5456         check_cflags -faltivec
5457
5458         # check if our compiler supports Motorola AltiVec C API
5459         check_cc <<EOF || disable altivec
5460 $inc_altivec_h
5461 int main(void) {
5462     vector signed int v1 = (vector signed int) { 0 };
5463     vector signed int v2 = (vector signed int) { 1 };
5464     v1 = vec_add(v1, v2);
5465     return 0;
5466 }
5467 EOF
5468
5469         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5470     fi
5471
5472     if enabled vsx; then
5473         check_cflags -mvsx &&
5474         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
5475     fi
5476
5477     if enabled power8; then
5478         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
5479     fi
5480
5481 elif enabled x86; then
5482
5483     check_builtin rdtsc    intrin.h   "__rdtsc()"
5484     check_builtin mm_empty mmintrin.h "_mm_empty()"
5485
5486     enable local_aligned_8 local_aligned_16 local_aligned_32
5487
5488     # check whether EBP is available on x86
5489     # As 'i' is stored on the stack, this program will crash
5490     # if the base pointer is used to access it because the
5491     # base pointer is cleared in the inline assembly code.
5492     check_exec_crash <<EOF && enable ebp_available
5493 volatile int i=0;
5494 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5495 return i;
5496 EOF
5497
5498     # check whether EBX is available on x86
5499     check_inline_asm ebx_available '""::"b"(0)' &&
5500         check_inline_asm ebx_available '"":::"%ebx"'
5501
5502     # check whether xmm clobbers are supported
5503     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5504
5505     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5506         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5507
5508     # check whether binutils is new enough to compile SSSE3/MMXEXT
5509     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5510     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5511
5512     probe_x86asm(){
5513         x86asmexe_probe=$1
5514         if check_cmd $x86asmexe_probe -v; then
5515             x86asmexe=$x86asmexe_probe
5516             x86asm_type=nasm
5517             x86asm_debug="-g -F dwarf"
5518         elif check_cmd $x86asmexe_probe --version; then
5519             x86asmexe=$x86asmexe_probe
5520             x86asm_type=yasm
5521             x86asm_debug="-g dwarf2"
5522         fi
5523         check_x86asm "movbe ecx, [5]" && enable x86asm
5524     }
5525
5526     if ! disabled_any asm mmx x86asm; then
5527         disable x86asm
5528         for program in $x86asmexe nasm yasm; do
5529             probe_x86asm $program && break
5530         done
5531         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
5532         test $x86asm_type = 'nasm' && X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
5533         test $x86asm_type = 'yasm' && X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
5534         X86ASMFLAGS="-f $objformat"
5535         enabled pic               && append X86ASMFLAGS "-DPIC"
5536         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
5537         case "$objformat" in
5538             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
5539         esac
5540
5541         check_x86asm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
5542         check_x86asm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
5543         check_x86asm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
5544         check_x86asm "CPU amdnop" || disable cpunop
5545     fi
5546
5547     case "$cpu" in
5548         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5549             disable fast_clz
5550         ;;
5551     esac
5552
5553 fi
5554
5555 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
5556
5557 check_ldflags -Wl,--as-needed
5558 check_ldflags -Wl,-z,noexecstack
5559
5560 if check_func dlopen && check_func dlsym; then
5561     ldl=
5562 elif check_func dlopen -ldl && check_func dlsym -ldl; then
5563     ldl=-ldl
5564 fi
5565
5566 avisynth_demuxer_extralibs='$ldl'
5567 cuda_extralibs='$ldl'
5568 decklink_outdev_extralibs="$decklink_outdev_extralibs $ldl"
5569 decklink_indev_extralibs="$decklink_indev_extralibs $ldl"
5570 frei0r_filter_extralibs='$ldl'
5571 frei0r_src_filter_extralibs='$ldl'
5572 ladspa_filter_extralibs='$ldl'
5573 nvenc_extralibs='$ldl'
5574 coreimage_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5575 coreimagesrc_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5576
5577 if ! disabled network; then
5578     check_func getaddrinfo $network_extralibs
5579     check_func inet_aton $network_extralibs
5580
5581     check_type netdb.h "struct addrinfo"
5582     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5583     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5584     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5585     check_type poll.h "struct pollfd"
5586     check_type netinet/sctp.h "struct sctp_event_subscribe"
5587     check_struct "sys/socket.h" "struct msghdr" msg_flags
5588     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5589     check_type netinet/in.h "struct sockaddr_in6"
5590     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5591     check_type "sys/types.h sys/socket.h" socklen_t
5592
5593     # Prefer arpa/inet.h over winsock2
5594     if check_header arpa/inet.h ; then
5595         check_func closesocket
5596     elif check_header winsock2.h ; then
5597         check_func_headers winsock2.h closesocket -lws2 &&
5598             network_extralibs="-lws2" ||
5599         { check_func_headers winsock2.h closesocket -lws2_32 &&
5600             network_extralibs="-lws2_32"; } || disable winsock2_h network
5601         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5602
5603         check_type ws2tcpip.h socklen_t
5604         check_type ws2tcpip.h "struct addrinfo"
5605         check_type ws2tcpip.h "struct group_source_req"
5606         check_type ws2tcpip.h "struct ip_mreq_source"
5607         check_type ws2tcpip.h "struct ipv6_mreq"
5608         check_type winsock2.h "struct pollfd"
5609         check_struct winsock2.h "struct sockaddr" sa_len
5610         check_type ws2tcpip.h "struct sockaddr_in6"
5611         check_type ws2tcpip.h "struct sockaddr_storage"
5612     else
5613         disable network
5614     fi
5615 fi
5616
5617 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5618 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5619 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5620 check_builtin sarestart signal.h "SA_RESTART"
5621 check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" -lpthread
5622 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5623 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5624 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5625 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5626
5627 case "$custom_allocator" in
5628     jemalloc)
5629         # jemalloc by default does not use a prefix
5630         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5631     ;;
5632     tcmalloc)
5633         require_pkg_config libtcmalloc gperftools/tcmalloc.h tc_malloc
5634         malloc_prefix=tc_
5635     ;;
5636 esac
5637
5638 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5639 check_func  ${malloc_prefix}memalign            && enable memalign
5640 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5641
5642 check_func  access
5643 check_func_headers stdlib.h arc4random
5644 check_func_headers time.h clock_gettime ||
5645     { check_lib clock_gettime time.h clock_gettime -lrt && LIBRT="-lrt"; }
5646 check_func  fcntl
5647 check_func  fork
5648 check_func  gethrtime
5649 check_func  getopt
5650 check_func  getrusage
5651 check_func  gettimeofday
5652 check_func  isatty
5653 check_func  mach_absolute_time
5654 check_func  mkstemp
5655 check_func  mmap
5656 check_func  mprotect
5657 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5658 check_func_headers time.h nanosleep ||
5659     { check_lib nanosleep time.h nanosleep -lrt && LIBRT="-lrt"; }
5660 check_func  sched_getaffinity
5661 check_func  setrlimit
5662 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5663 check_func  strerror_r
5664 check_func  sysconf
5665 check_func  sysctl
5666 check_func  usleep
5667
5668 check_func_headers conio.h kbhit
5669 check_func_headers io.h setmode
5670 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5671 check_func_headers stdlib.h getenv
5672 check_func_headers sys/stat.h lstat
5673
5674 check_func_headers windows.h GetProcessAffinityMask
5675 check_func_headers windows.h GetProcessTimes
5676 check_func_headers windows.h GetSystemTimeAsFileTime
5677 check_func_headers windows.h LoadLibrary
5678 check_func_headers windows.h MapViewOfFile
5679 check_func_headers windows.h PeekNamedPipe
5680 check_func_headers windows.h SetConsoleTextAttribute
5681 check_func_headers windows.h SetConsoleCtrlHandler
5682 check_func_headers windows.h Sleep
5683 check_func_headers windows.h VirtualAlloc
5684 check_struct windows.h "CONDITION_VARIABLE" Ptr
5685 check_func_headers glob.h glob
5686 enabled xlib &&
5687     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5688
5689 check_header AudioToolbox/AudioToolbox.h
5690 check_header d3d11.h
5691 check_header direct.h
5692 check_header dirent.h
5693 check_header dlfcn.h
5694 check_header dxgidebug.h
5695 check_header dxva.h
5696 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5697 check_header io.h
5698 check_header libcrystalhd/libcrystalhd_if.h
5699 check_header mach/mach_time.h
5700 check_header malloc.h
5701 check_header net/udplite.h
5702 check_header poll.h
5703 check_header sys/mman.h
5704 check_header sys/param.h
5705 check_header sys/resource.h
5706 check_header sys/select.h
5707 check_header sys/time.h
5708 check_header sys/un.h
5709 check_header termios.h
5710 check_header unistd.h
5711 check_header valgrind/valgrind.h
5712 check_header VideoDecodeAcceleration/VDADecoder.h
5713 check_header VideoToolbox/VideoToolbox.h
5714 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5715 enabled videotoolbox && check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferColorPrimaries_ITU_R_2020 -framework CoreVideo
5716 check_header windows.h
5717 check_header X11/extensions/XvMClib.h
5718 check_header asm/types.h
5719
5720 # it seems there are versions of clang in some distros that try to use the
5721 # gcc headers, which explodes for stdatomic
5722 # so we also check that atomics actually work here
5723 check_builtin stdatomic_h stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0)"
5724
5725 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
5726 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
5727 check_lib wincrypt "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
5728 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
5729
5730 check_lib coreservices "CoreServices/CoreServices.h" UTGetOSTypeFromString "-framework CoreServices"
5731
5732 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5733
5734 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5735 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5736 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5737 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5738 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5739
5740 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
5741 check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
5742 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
5743 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
5744 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5745 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5746 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
5747 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
5748 check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
5749
5750 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5751
5752 check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt
5753
5754 if ! disabled w32threads && ! enabled pthreads; then
5755     check_func_headers "windows.h process.h" _beginthreadex &&
5756         enable w32threads || disable w32threads
5757     if ! enabled w32threads && enabled winrt; then
5758         check_func_headers "windows.h" CreateThread &&
5759             enable w32threads || disable w32threads
5760     fi
5761 fi
5762
5763 # check for some common methods of building with pthread support
5764 # do this before the optional library checks as some of them require pthreads
5765 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5766     if check_lib pthreads pthread.h pthread_join   -pthread &&
5767        check_lib pthreads pthread.h pthread_create -pthread; then
5768         add_cflags -pthread
5769     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
5770          check_lib pthreads pthread.h pthread_create -pthreads; then
5771         add_cflags -pthreads
5772     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
5773          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
5774         add_cflags -ldl -pthread
5775     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
5776          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
5777         :
5778     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
5779          check_lib pthreads pthread.h pthread_create -lpthread; then
5780         :
5781     elif check_func pthread_join && check_func pthread_create; then
5782         enable pthreads
5783     fi
5784     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5785 fi
5786
5787
5788 if enabled pthreads; then
5789   check_func pthread_cancel
5790 fi
5791
5792 enabled pthreads &&
5793     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)"
5794
5795 disabled  zlib || check_lib zlib   zlib.h      zlibVersion    -lz
5796 disabled bzlib || check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
5797 disabled  lzma || check_lib lzma   lzma.h lzma_version_number -llzma
5798
5799 check_lib libm math.h sin -lm && LIBM="-lm"
5800 disabled crystalhd || check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
5801
5802 atan2f_args=2
5803 copysign_args=2
5804 hypot_args=2
5805 ldexpf_args=2
5806 powf_args=2
5807
5808 for func in $MATH_FUNCS; do
5809     eval check_mathfunc $func \${${func}_args:-1} $LIBM
5810 done
5811
5812 for func in $COMPLEX_FUNCS; do
5813     eval check_complexfunc $func \${${func}_args:-1}
5814 done
5815
5816 # these are off by default, so fail if requested and not available
5817 enabled avfoundation_indev && { check_header_objcc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
5818 enabled avfoundation_indev && { check_lib avfoundation_indev CoreGraphics/CoreGraphics.h CGGetActiveDisplayList -framework CoreGraphics ||
5819                                 check_lib avfoundation_indev ApplicationServices/ApplicationServices.h CGGetActiveDisplayList -framework ApplicationServices; }
5820 enabled cuda_sdk          && require cuda_sdk cuda.h cuCtxCreate -lcuda
5821 enabled cuvid             && { enabled cuda ||
5822                                die "ERROR: CUVID requires CUDA"; }
5823 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5824 enabled coreimage_filter  && { check_header_objcc QuartzCore/CoreImage.h || disable coreimage_filter; }
5825 enabled coreimagesrc_filter && { check_header_objcc QuartzCore/CoreImage.h || disable coreimagesrc_filter; }
5826 enabled decklink          && { { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; } &&
5827                                { check_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a060100" || die "ERROR: Decklink API version must be >= 10.6.1."; } }
5828 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
5829 enabled gmp               && require gmp gmp.h mpz_export -lgmp
5830 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
5831 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads || die "ERROR: jni not found"; }
5832 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
5833 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5834 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
5835 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
5836 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
5837 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5838                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
5839                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5840 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
5841 enabled libdc1394         && require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new
5842 enabled libfdk_aac        && { use_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5843                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5844                                  warn "using libfdk without pkg-config"; } }
5845 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"
5846 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
5847 enabled fontconfig        && enable libfontconfig
5848 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
5849 enabled libfreetype       && require_pkg_config freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
5850 enabled libfribidi        && require_pkg_config fribidi fribidi.h fribidi_version_info
5851 enabled libgme            && { use_pkg_config libgme gme/gme.h gme_new_emu ||
5852                                require libgme gme/gme.h gme_new_emu -lgme -lstdc++; }
5853 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5854                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
5855                                done || die "ERROR: libgsm not found"; }
5856 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
5857 enabled libkvazaar        && require_pkg_config "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
5858 # While it may appear that require is being used as a pkg-config
5859 # fallback for libmfx, it is actually being used to detect a different
5860 # installation route altogether.  If libmfx is installed via the Intel
5861 # Media SDK or Intel Media Server Studio, these don't come with
5862 # pkg-config support.  Instead, users should make sure that the build
5863 # can find the libraries and headers through other means.
5864 enabled libmfx            && { use_pkg_config libmfx "mfx/mfxvideo.h" MFXInit ||
5865                                { require libmfx "mfx/mfxvideo.h" MFXInit -llibmfx && warn "using libmfx without pkg-config"; } }
5866 enabled libmodplug        && require_pkg_config libmodplug libmodplug/modplug.h ModPlug_Load
5867 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5868 enabled libmysofa         && require libmysofa "mysofa.h" mysofa_load -lmysofa
5869 enabled libnpp            && require libnpp npp.h nppGetLibVersion -lnppi -lnppc
5870 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5871 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5872 enabled libopencv         && { check_header opencv2/core/core_c.h &&
5873                                { use_pkg_config opencv opencv2/core/core_c.h cvCreateImageHeader ||
5874                                  require opencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
5875                                require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader; }
5876 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
5877 enabled libopenjpeg       && { { check_lib libopenjpeg openjpeg-2.2/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5878                                check_lib libopenjpeg openjpeg-2.2/openjpeg.h opj_version -lopenjp2 ||
5879                                { check_lib libopenjpeg openjpeg-2.1/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5880                                check_lib libopenjpeg openjpeg-2.1/openjpeg.h opj_version -lopenjp2 ||
5881                                { check_lib libopenjpeg openjpeg-2.0/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5882                                { check_lib libopenjpeg openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5883                                { check_lib libopenjpeg openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5884                                die "ERROR: libopenjpeg not found"; }
5885 enabled libopenmpt        && require_pkg_config "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create
5886 enabled libopus           && {
5887     enabled libopus_decoder && {
5888         require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
5889     }
5890     enabled libopus_encoder && {
5891         require_pkg_config opus opus_multistream.h opus_multistream_surround_encoder_create
5892     }
5893 }
5894 enabled libpulse          && require_pkg_config libpulse pulse/pulseaudio.h pa_context_new
5895 enabled librsvg           && require_pkg_config librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
5896 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
5897 enabled librubberband     && require_pkg_config "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new
5898 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
5899 enabled libsmbclient      && { use_pkg_config smbclient libsmbclient.h smbc_init ||
5900                                require smbclient libsmbclient.h smbc_init -lsmbclient; }
5901 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy
5902 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr && LIBSOXR="-lsoxr"
5903 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
5904 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
5905 enabled libtesseract      && require_pkg_config tesseract tesseract/capi.h TessBaseAPICreate
5906 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
5907 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
5908                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
5909                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
5910 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
5911 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
5912 enabled libvmaf           && { check_lib libvmaf "libvmaf.h" "compute_vmaf" -lvmaf -lstdc++ -lpthread -lm ||
5913                                die "ERROR: libvmaf must be installed"; }
5914 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
5915 enabled libvorbis         && require_pkg_config vorbis vorbis/codec.h vorbis_info_init &&
5916                              require_pkg_config vorbisenc vorbis/vorbisenc.h vorbis_encode_init
5917
5918 enabled libvpx            && {
5919     enabled libvpx_vp8_decoder && {
5920         use_pkg_config "vpx >= 0.9.1" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
5921             check_lib libvpx_vp8_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
5922                 die "ERROR: libvpx decoder version must be >=0.9.1";
5923     }
5924     enabled libvpx_vp8_encoder && {
5925         use_pkg_config "vpx >= 0.9.7" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
5926             check_lib libvpx_vp8_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
5927                 die "ERROR: libvpx encoder version must be >=0.9.7";
5928     }
5929     enabled libvpx_vp9_decoder && {
5930         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
5931             check_lib libvpx_vp9_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx
5932     }
5933     enabled libvpx_vp9_encoder && {
5934         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
5935             check_lib libvpx_vp9_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx
5936     }
5937     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
5938         die "libvpx enabled but no supported decoders found"
5939     fi
5940 }
5941
5942 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
5943 enabled libwebp           && {
5944     enabled libwebp_encoder      && require_pkg_config "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
5945     enabled libwebp_anim_encoder && { use_pkg_config "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit || disable libwebp_anim_encoder; } }
5946 enabled libx264           && { use_pkg_config x264 "stdint.h x264.h" x264_encoder_encode ||
5947                                { require libx264 "stdint.h x264.h" x264_encoder_encode -lx264 &&
5948                                  warn "using libx264 without pkg-config"; } } &&
5949                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
5950                                die "ERROR: libx264 must be installed and version must be >= 0.118."; } &&
5951                              { check_cpp_condition x264.h "X264_MPEG2" &&
5952                                enable libx262; }
5953 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
5954                              { check_cpp_condition x265.h "X265_BUILD >= 68" ||
5955                                die "ERROR: libx265 version must be >= 68."; }
5956 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode -lxavs
5957 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
5958 enabled libzimg           && require_pkg_config "zimg >= 2.3.0" zimg.h zimg_get_api_version
5959 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
5960 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi &&
5961                              { check_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
5962                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
5963 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
5964 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
5965                                { ! enabled cross_compile &&
5966                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
5967                                  add_ldflags -L/opt/vc/lib/ &&
5968                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
5969                                die "ERROR: mmal not found" &&
5970                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
5971 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
5972                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
5973                                die "ERROR: openal not found"; } &&
5974                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
5975                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
5976 enabled opencl            && { check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
5977                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
5978                                die "ERROR: opencl not found"; } &&
5979                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
5980                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
5981                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
5982 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
5983                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
5984                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
5985                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
5986                                die "ERROR: opengl not found."
5987                              }
5988 enabled omx_rpi           && { check_header OMX_Core.h ||
5989                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_header OMX_Core.h ; } ||
5990                                die "ERROR: OpenMAX IL headers not found"; }
5991 enabled omx               && { check_header OMX_Core.h || die "ERROR: OpenMAX IL headers not found"; }
5992 enabled openssl           && { use_pkg_config openssl openssl/ssl.h OPENSSL_init_ssl ||
5993                                use_pkg_config openssl openssl/ssl.h SSL_library_init ||
5994                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
5995                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
5996                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
5997                                die "ERROR: openssl not found"; }
5998 enabled qtkit_indev      && { check_header_objcc QTKit/QTKit.h || disable qtkit_indev; }
5999
6000 if enabled gcrypt; then
6001     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
6002     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
6003         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
6004         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
6005         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
6006             die "ERROR: gcrypt not found"
6007         add_cflags $gcrypt_cflags && add_extralibs $gcrypt_extralibs
6008     else
6009         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
6010     fi
6011 fi
6012
6013 disabled sdl && disable sdl2
6014 if ! disabled sdl2; then
6015     SDL2_CONFIG="${cross_prefix}sdl2-config"
6016     if check_pkg_config sdl2 SDL_events.h SDL_PollEvent; then
6017         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6018         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6019         check_func SDL_Init $sdl2_extralibs $sdl2_cflags && enable sdl2
6020     else
6021       if "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6022         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6023         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6024         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6025         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6026         check_func SDL_Init $sdl2_extralibs $sdl2_cflags && enable sdl2
6027       fi
6028     fi
6029     if test $target_os = "mingw32"; then
6030         sdl2_extralibs="$sdl2_extralibs -mconsole"
6031     fi
6032 fi
6033 enabled sdl2 && enable sdl && add_cflags $sdl2_cflags && add_extralibs $sdl2_extralibs
6034
6035 if enabled decklink; then
6036     case $target_os in
6037         mingw32*|mingw64*|win32|win64)
6038             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6039             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6040             ;;
6041     esac
6042 fi
6043
6044 disabled securetransport || { check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6045     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext SecItemImport" "-Wl,-framework,CoreFoundation -Wl,-framework,Security"; }
6046
6047 disabled schannel || { check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6048                        check_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" && enable schannel && add_extralibs -lsecur32; }
6049
6050 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6051 enabled makeinfo \
6052     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6053     && enable makeinfo_html || disable makeinfo_html
6054 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6055 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6056 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6057 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6058
6059 check_header linux/fb.h
6060 check_header linux/videodev.h
6061 check_header linux/videodev2.h
6062 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
6063
6064 check_header sys/videoio.h
6065 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
6066
6067 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6068 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6069 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6070 # w32api 3.12 had it defined wrong
6071 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
6072
6073 check_type "dshow.h" IBaseFilter
6074
6075 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6076 { check_header dev/bktr/ioctl_meteor.h &&
6077   check_header dev/bktr/ioctl_bt848.h; } ||
6078 { check_header machine/ioctl_meteor.h &&
6079   check_header machine/ioctl_bt848.h; } ||
6080 { check_header dev/video/meteor/ioctl_meteor.h &&
6081   check_header dev/video/bktr/ioctl_bt848.h; } ||
6082 check_header dev/ic/bt8xx.h
6083
6084 if check_struct sys/soundcard.h audio_buf_info bytes; then
6085     enable_safe sys/soundcard.h
6086 else
6087     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
6088     #include <sys/soundcard.h>
6089     audio_buf_info abc;
6090 EOF
6091 fi
6092 check_header soundcard.h
6093
6094 enabled_any alsa_indev alsa_outdev &&
6095     check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
6096
6097 enabled jack_indev && check_lib jack jack/jack.h jack_client_open -ljack &&
6098     check_func jack_port_get_latency_range -ljack
6099
6100 enabled_any sndio_indev sndio_outdev && check_lib sndio sndio.h sio_open -lsndio
6101
6102 if enabled libcdio; then
6103     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6104     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6105     die "ERROR: No usable libcdio/cdparanoia found"
6106 fi
6107
6108 if ! disabled libxcb; then
6109     check_pkg_config "xcb >= 1.4" xcb/xcb.h xcb_connect || {
6110         enabled libxcb && die "ERROR: libxcb >= 1.4 not found";
6111     } && enable libxcb
6112
6113 if enabled libxcb; then
6114     disabled libxcb_shm || {
6115         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
6116             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
6117         } && check_header sys/shm.h && enable libxcb_shm; }
6118
6119     disabled libxcb_xfixes || {
6120         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
6121             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
6122         } && enable libxcb_xfixes; }
6123
6124     disabled libxcb_shape || {
6125         check_pkg_config xcb-shape xcb/shape.h xcb_shape_get_rectangles || {
6126             enabled libxcb_shape && die "ERROR: libxcb_shape not found";
6127         } && enable libxcb_shape; }
6128
6129     add_cflags $xcb_cflags $xcb_shm_cflags $xcb_xfixes_cflags $xcb_shape_cflags
6130     add_extralibs $xcb_extralibs $xcb_shm_extralibs $xcb_xfixes_extralibs $xcb_shape_extralibs
6131 fi
6132 fi
6133
6134 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6135
6136 # d3d11va requires linking directly to dxgi and d3d11 if not building for
6137 # the desktop api partition
6138 check_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
6139 #ifdef WINAPI_FAMILY
6140 #include <winapifamily.h>
6141 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
6142 #error desktop, not uwp
6143 #else
6144 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
6145 #endif
6146 #else
6147 #error no family set
6148 #endif
6149 EOF
6150
6151 enabled vaapi &&
6152     check_lib vaapi va/va.h vaInitialize -lva
6153
6154 enabled vaapi &&
6155     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
6156     disable vaapi
6157
6158 enabled vaapi &&
6159     check_lib vaapi_drm "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm
6160
6161 enabled vaapi &&
6162     check_lib vaapi_x11 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 -lX11
6163
6164 enabled vdpau &&
6165     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
6166     disable vdpau
6167
6168 enabled vdpau &&
6169     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6170
6171 if enabled x86; then
6172     case $target_os in
6173         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6174             ;;
6175         *)
6176             disable cuda cuvid nvenc
6177             ;;
6178     esac
6179 else
6180     disable cuda cuvid nvenc
6181 fi
6182
6183 enabled nvenc &&
6184     check_cc -I$source_path <<EOF || disable nvenc
6185 #include "compat/nvenc/nvEncodeAPI.h"
6186 NV_ENCODE_API_FUNCTION_LIST flist;
6187 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6188 int main(void) { return 0; }
6189 EOF
6190
6191 # Funny iconv installations are not unusual, so check it after all flags have been set
6192 disabled iconv || check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6193
6194 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6195
6196 # add some useful compiler flags if supported
6197 check_cflags -Wdeclaration-after-statement
6198 check_cflags -Wall
6199 check_cflags -Wdisabled-optimization
6200 check_cflags -Wpointer-arith
6201 check_cflags -Wredundant-decls
6202 check_cflags -Wwrite-strings
6203 check_cflags -Wtype-limits
6204 check_cflags -Wundef
6205 check_cflags -Wmissing-prototypes
6206 check_cflags -Wno-pointer-to-int-cast
6207 check_cflags -Wstrict-prototypes
6208 check_cflags -Wempty-body
6209
6210 if enabled extra_warnings; then
6211     check_cflags -Wcast-qual
6212     check_cflags -Wextra
6213     check_cflags -Wpedantic
6214 fi
6215
6216 check_disable_warning(){
6217     warning_flag=-W${1#-Wno-}
6218     test_cflags $warning_flag && add_cflags $1
6219 }
6220
6221 check_disable_warning -Wno-parentheses
6222 check_disable_warning -Wno-switch
6223 check_disable_warning -Wno-format-zero-length
6224 check_disable_warning -Wno-pointer-sign
6225 check_disable_warning -Wno-unused-const-variable
6226
6227 check_disable_warning_headers(){
6228     warning_flag=-W${1#-Wno-}
6229     test_cflags $warning_flag && add_cflags_headers $1
6230 }
6231
6232 check_disable_warning_headers -Wno-deprecated-declarations
6233 check_disable_warning_headers -Wno-unused-variable
6234
6235 check_cc <<EOF && enable blocks_extension
6236 void (^block)(void);
6237 EOF
6238
6239 # add some linker flags
6240 check_ldflags -Wl,--warn-common
6241 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6242 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
6243 enabled rpath && add_ldlibflags -Wl,-rpath,$libdir
6244 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6245
6246 # add some strip flags
6247 check_stripflags -x
6248
6249 enabled neon_clobber_test &&
6250     check_ldflags -Wl,--wrap,avcodec_open2              \
6251                   -Wl,--wrap,avcodec_decode_audio4      \
6252                   -Wl,--wrap,avcodec_decode_video2      \
6253                   -Wl,--wrap,avcodec_decode_subtitle2   \
6254                   -Wl,--wrap,avcodec_encode_audio2      \
6255                   -Wl,--wrap,avcodec_encode_video2      \
6256                   -Wl,--wrap,avcodec_encode_subtitle    \
6257                   -Wl,--wrap,avcodec_send_packet        \
6258                   -Wl,--wrap,avcodec_receive_packet     \
6259                   -Wl,--wrap,avcodec_send_frame         \
6260                   -Wl,--wrap,avcodec_receive_frame      \
6261                   -Wl,--wrap,swr_convert                \
6262                   -Wl,--wrap,avresample_convert ||
6263     disable neon_clobber_test
6264
6265 enabled xmm_clobber_test &&
6266     check_ldflags -Wl,--wrap,avcodec_open2              \
6267                   -Wl,--wrap,avcodec_decode_audio4      \
6268                   -Wl,--wrap,avcodec_decode_video2      \
6269                   -Wl,--wrap,avcodec_decode_subtitle2   \
6270                   -Wl,--wrap,avcodec_encode_audio2      \
6271                   -Wl,--wrap,avcodec_encode_video2      \
6272                   -Wl,--wrap,avcodec_encode_subtitle    \
6273                   -Wl,--wrap,avcodec_send_packet        \
6274                   -Wl,--wrap,avcodec_receive_packet     \
6275                   -Wl,--wrap,avcodec_send_frame         \
6276                   -Wl,--wrap,avcodec_receive_frame      \
6277                   -Wl,--wrap,swr_convert                \
6278                   -Wl,--wrap,avresample_convert         \
6279                   -Wl,--wrap,sws_scale ||
6280     disable xmm_clobber_test
6281
6282 check_ld "cc" <<EOF && enable proper_dce
6283 extern const int array[512];
6284 static inline int func(void) { return array[0]; }
6285 int main(void) { return 0; }
6286 EOF
6287
6288 if enabled proper_dce; then
6289     echo "X { local: *; };" > $TMPV
6290     if test_ldflags -Wl,${version_script},$TMPV; then
6291         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6292         check_cc <<EOF && enable symver_asm_label
6293 void ff_foo(void) __asm__ ("av_foo@VERSION");
6294 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6295 EOF
6296         check_cc <<EOF && enable symver_gnu_asm
6297 __asm__(".symver ff_foo,av_foo@VERSION");
6298 void ff_foo(void) {}
6299 EOF
6300     fi
6301 fi
6302
6303 if [ -z "$optflags" ]; then
6304     if enabled small; then
6305         optflags=$cflags_size
6306     elif enabled optimizations; then
6307         optflags=$cflags_speed
6308     else
6309         optflags=$cflags_noopt
6310     fi
6311 fi
6312
6313 if [ -z "$nvccflags" ]; then
6314     nvccflags=$nvccflags_default
6315 fi
6316
6317 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6318     nvccflags="$nvccflags -m64"
6319 else
6320     nvccflags="$nvccflags -m32"
6321 fi
6322
6323 check_optflags(){
6324     check_cflags "$@"
6325     enabled lto && check_ldflags "$@"
6326 }
6327
6328 check_optflags $optflags
6329 check_optflags -fno-math-errno
6330 check_optflags -fno-signed-zeros
6331
6332 if enabled lto; then
6333     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6334     check_cflags  -flto
6335     check_ldflags -flto $cpuflags
6336     disable inline_asm_direct_symbol_refs
6337 fi
6338
6339 enabled ftrapv && check_cflags -ftrapv
6340
6341 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6342 int x;
6343 EOF
6344
6345
6346 if enabled icc; then
6347     # Just warnings, no remarks
6348     check_cflags -w1
6349     # -wd: Disable following warnings
6350     # 144, 167, 556: -Wno-pointer-sign
6351     # 188: enumerated type mixed with another type
6352     # 1292: attribute "foo" ignored
6353     # 1419: external declaration in primary source file
6354     # 10006: ignoring unknown option -fno-signed-zeros
6355     # 10148: ignoring unknown option -Wno-parentheses
6356     # 10156: ignoring option '-W'; no argument required
6357     # 13200: No EMMS instruction before call to function
6358     # 13203: No EMMS instruction before return from function
6359     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6360     # 11030: Warning unknown option --as-needed
6361     # 10156: ignoring option '-export'; no argument required
6362     check_ldflags -wd10156,11030
6363     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6364     enable ebp_available
6365     # The test above does not test linking
6366     enabled lto && disable symver_asm_label
6367     if enabled x86_32; then
6368         icc_version=$($cc -dumpversion)
6369         test ${icc_version%%.*} -ge 11 &&
6370             check_cflags -falign-stack=maintain-16-byte ||
6371             disable aligned_stack
6372     fi
6373 elif enabled ccc; then
6374     # disable some annoying warnings
6375     add_cflags -msg_disable bitnotint
6376     add_cflags -msg_disable mixfuncvoid
6377     add_cflags -msg_disable nonstandcast
6378     add_cflags -msg_disable unsupieee
6379 elif enabled gcc; then
6380     check_optflags -fno-tree-vectorize
6381     check_cflags -Werror=format-security
6382     check_cflags -Werror=implicit-function-declaration
6383     check_cflags -Werror=missing-prototypes
6384     check_cflags -Werror=return-type
6385     check_cflags -Werror=vla
6386     check_cflags -Wformat
6387     check_cflags -fdiagnostics-color=auto
6388     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6389 elif enabled llvm_gcc; then
6390     check_cflags -mllvm -stack-alignment=16
6391 elif enabled clang; then
6392     check_cflags -mllvm -stack-alignment=16
6393     check_cflags -mstack-alignment=16
6394     check_cflags -Qunused-arguments
6395     check_cflags -Werror=implicit-function-declaration
6396     check_cflags -Werror=missing-prototypes
6397     check_cflags -Werror=return-type
6398 elif enabled cparser; then
6399     add_cflags -Wno-missing-variable-declarations
6400     add_cflags -Wno-empty-statement
6401 elif enabled armcc; then
6402     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6403     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6404     # 2523: use of inline assembly is deprecated
6405     add_cflags -W${armcc_opt},--diag_suppress=2523
6406     add_cflags -W${armcc_opt},--diag_suppress=1207
6407     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6408     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6409     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6410     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6411 elif enabled tms470; then
6412     add_cflags -pds=824 -pds=837
6413     disable inline_asm
6414 elif enabled pathscale; then
6415     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6416 elif enabled_any msvc icl; then
6417     enabled x86_32 && disable aligned_stack
6418     enabled_all x86_32 debug && add_cflags -Oy-
6419     enabled debug && add_ldflags -debug
6420     enable pragma_deprecated
6421     if enabled icl; then
6422         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6423         # (correctly) on icl 13.x.
6424         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6425             add_cflags -Qansi-alias
6426         # Some inline asm is not compilable in debug
6427         if enabled debug; then
6428             disable ebp_available
6429             disable ebx_available
6430         fi
6431     fi
6432     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6433     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
6434     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6435     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6436     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6437     # MSVC 2013 and newer can handle it fine.
6438     # If this declspec fails, force including stdlib.h before the restrict redefinition
6439     # happens in config.h.
6440     if [ $_restrict != restrict ]; then
6441         check_cc <<EOF || add_cflags -FIstdlib.h
6442 __declspec($_restrict) void* foo(int);
6443 EOF
6444     fi
6445     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6446     # Issue has been fixed in MSVC v19.00.24218.
6447     check_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6448         check_cflags -d2SSAOptimizer-
6449     # enable utf-8 source processing on VS2015 U2 and newer
6450     check_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6451         add_cflags -utf-8
6452 fi
6453
6454 for pfx in "" host_; do
6455     varname=${pfx%_}cc_type
6456     eval "type=\$$varname"
6457     if [ "$type" = "msvc" ]; then
6458         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6459 static inline int foo(int a) { return a; }
6460 EOF
6461     fi
6462 done
6463
6464 case $as_type in
6465     clang)
6466         add_asflags -Qunused-arguments
6467     ;;
6468 esac
6469
6470 case $ld_type in
6471     clang)
6472         check_ldflags -Qunused-arguments
6473     ;;
6474 esac
6475
6476 case $target_os in
6477     osf1)
6478         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
6479     ;;
6480 esac
6481
6482 enable frame_thread_encoder
6483
6484 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6485
6486 check_deps $CONFIG_LIST       \
6487            $CONFIG_EXTRA      \
6488            $HAVE_LIST         \
6489            $ALL_COMPONENTS    \
6490
6491 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"
6492
6493
6494 if test $target_os = "haiku"; then
6495     disable memalign
6496     disable posix_memalign
6497 fi
6498
6499 # add_dep lib dep
6500 # -> enable ${lib}_deps_${dep}
6501 # -> add $dep to ${lib}_deps only once
6502 add_dep() {
6503     lib=$1
6504     dep=$2
6505     enabled "${lib}_deps_${dep}" && return 0
6506     enable  "${lib}_deps_${dep}"
6507     prepend "${lib}_deps" $dep
6508 }
6509
6510 # merge deps lib components
6511 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
6512 merge_deps() {
6513     lib=$1
6514     shift
6515     for comp in $*; do
6516         enabled $comp || continue
6517         eval "dep=\"\$${comp}_deps\""
6518         for d in $dep; do
6519             add_dep $lib $d
6520         done
6521     done
6522 }
6523
6524 merge_deps libavfilter $FILTER_LIST
6525
6526 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6527
6528 for thread in $THREADS_LIST; do
6529     if enabled $thread; then
6530         test -n "$thread_type" &&
6531             die "ERROR: Only one thread type must be selected." ||
6532             thread_type="$thread"
6533     fi
6534 done
6535
6536 if disabled stdatomic_h; then
6537     if enabled atomics_gcc; then
6538         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6539     elif enabled atomics_win32; then
6540         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6541     elif enabled atomics_suncc; then
6542         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6543     elif enabled pthreads; then
6544         add_compat atomics/pthread/stdatomic.o
6545         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6546     else
6547         enabled threads && die "Threading is enabled, but no atomics are available"
6548         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6549     fi
6550 fi
6551
6552 # Check if requested libraries were found.
6553 for lib in $AUTODETECT_LIBS; do
6554     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6555 done
6556
6557 enabled zlib && add_cppflags -DZLIB_CONST
6558
6559 # conditional library dependencies, in linking order
6560 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6561 enabled afir_filter         && prepend avfilter_deps "avcodec"
6562 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6563 enabled aresample_filter    && prepend avfilter_deps "swresample"
6564 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6565 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6566 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6567 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6568 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6569 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6570 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
6571 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6572 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6573 enabled pan_filter          && prepend avfilter_deps "swresample"
6574 enabled pp_filter           && prepend avfilter_deps "postproc"
6575 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6576 enabled resample_filter && prepend avfilter_deps "avresample"
6577 enabled sab_filter          && prepend avfilter_deps "swscale"
6578 enabled scale_filter    && prepend avfilter_deps "swscale"
6579 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6580 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6581 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6582 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6583 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6584 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
6585 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6586 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6587 enabled spp_filter          && prepend avfilter_deps "avcodec"
6588 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6589 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6590 enabled zoompan_filter      && prepend avfilter_deps "swscale"
6591
6592 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6593
6594 enabled opus_decoder    && prepend avcodec_deps "swresample"
6595
6596 expand_deps(){
6597     lib_deps=${1}_deps
6598     eval "deps=\$$lib_deps"
6599     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6600     unique $lib_deps
6601 }
6602
6603 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6604 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6605
6606 map 'expand_deps $v' $LIBRARY_LIST
6607
6608 license="LGPL version 2.1 or later"
6609 if enabled nonfree; then
6610     license="nonfree and unredistributable"
6611 elif enabled gplv3; then
6612     license="GPL version 3 or later"
6613 elif enabled lgplv3; then
6614     license="LGPL version 3 or later"
6615 elif enabled gpl; then
6616     license="GPL version 2 or later"
6617 fi
6618
6619 if test "$quiet" != "yes"; then
6620
6621 echo "install prefix            $prefix"
6622 echo "source path               $source_path"
6623 echo "C compiler                $cc"
6624 echo "C library                 $libc_type"
6625 if test "$host_cc" != "$cc"; then
6626     echo "host C compiler           $host_cc"
6627     echo "host C library            $host_libc_type"
6628 fi
6629 echo "ARCH                      $arch ($cpu)"
6630 if test "$build_suffix" != ""; then
6631     echo "build suffix              $build_suffix"
6632 fi
6633 if test "$progs_suffix" != ""; then
6634     echo "progs suffix              $progs_suffix"
6635 fi
6636 if test "$extra_version" != ""; then
6637     echo "version string suffix     $extra_version"
6638 fi
6639 echo "big-endian                ${bigendian-no}"
6640 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6641 if enabled x86; then
6642     echo "standalone assembly       ${x86asm-no}"
6643     echo "x86 assembler             ${x86asmexe}"
6644     echo "MMX enabled               ${mmx-no}"
6645     echo "MMXEXT enabled            ${mmxext-no}"
6646     echo "3DNow! enabled            ${amd3dnow-no}"
6647     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6648     echo "SSE enabled               ${sse-no}"
6649     echo "SSSE3 enabled             ${ssse3-no}"
6650     echo "AESNI enabled             ${aesni-no}"
6651     echo "AVX enabled               ${avx-no}"
6652     echo "XOP enabled               ${xop-no}"
6653     echo "FMA3 enabled              ${fma3-no}"
6654     echo "FMA4 enabled              ${fma4-no}"
6655     echo "i686 features enabled     ${i686-no}"
6656     echo "CMOV is fast              ${fast_cmov-no}"
6657     echo "EBX available             ${ebx_available-no}"
6658     echo "EBP available             ${ebp_available-no}"
6659 fi
6660 if enabled aarch64; then
6661     echo "NEON enabled              ${neon-no}"
6662     echo "VFP enabled               ${vfp-no}"
6663 fi
6664 if enabled arm; then
6665     echo "ARMv5TE enabled           ${armv5te-no}"
6666     echo "ARMv6 enabled             ${armv6-no}"
6667     echo "ARMv6T2 enabled           ${armv6t2-no}"
6668     echo "VFP enabled               ${vfp-no}"
6669     echo "NEON enabled              ${neon-no}"
6670     echo "THUMB enabled             ${thumb-no}"
6671 fi
6672 if enabled mips; then
6673     echo "MIPS FPU enabled          ${mipsfpu-no}"
6674     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6675     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6676     echo "MIPS MSA enabled          ${msa-no}"
6677     echo "LOONGSON MMI enabled      ${mmi-no}"
6678 fi
6679 if enabled ppc; then
6680     echo "AltiVec enabled           ${altivec-no}"
6681     echo "VSX enabled               ${vsx-no}"
6682     echo "POWER8 enabled            ${power8-no}"
6683     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6684     echo "dcbzl available           ${dcbzl-no}"
6685 fi
6686 echo "debug symbols             ${debug-no}"
6687 echo "strip symbols             ${stripping-no}"
6688 echo "optimize for size         ${small-no}"
6689 echo "optimizations             ${optimizations-no}"
6690 echo "static                    ${static-no}"
6691 echo "shared                    ${shared-no}"
6692 echo "postprocessing support    ${postproc-no}"
6693 echo "network support           ${network-no}"
6694 echo "threading support         ${thread_type-no}"
6695 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6696 echo "texi2html enabled         ${texi2html-no}"
6697 echo "perl enabled              ${perl-no}"
6698 echo "pod2man enabled           ${pod2man-no}"
6699 echo "makeinfo enabled          ${makeinfo-no}"
6700 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6701 test -n "$random_seed" &&
6702     echo "random seed               ${random_seed}"
6703 echo
6704
6705 echo "External libraries:"
6706 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_in_columns
6707 echo
6708
6709 echo "External libraries providing hardware acceleration:"
6710 print_enabled '' $HWACCEL_LIBRARY_LIST | print_in_columns
6711 echo
6712
6713 echo "Libraries:"
6714 print_enabled '' $LIBRARY_LIST | print_in_columns
6715 echo
6716
6717 echo "Programs:"
6718 print_enabled '' $PROGRAM_LIST | print_in_columns
6719 echo
6720
6721 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6722     echo "Enabled ${type}s:"
6723     eval list=\$$(toupper $type)_LIST
6724     print_enabled '_*' $list | print_in_columns
6725     echo
6726 done
6727
6728 if test -n "$ignore_tests"; then
6729     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
6730     echo "Ignored FATE tests:"
6731     echo $ignore_tests | print_in_columns
6732     echo
6733 fi
6734
6735 echo "License: $license"
6736
6737 echo "Creating configuration files ..."
6738
6739 fi # test "$quiet" != "yes"
6740
6741 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6742
6743 enabled stripping || strip="echo skipping strip"
6744
6745 config_files="$TMPH ffbuild/config.mak doc/config.texi"
6746
6747 cat > ffbuild/config.mak <<EOF
6748 # Automatically generated by configure - do not modify!
6749 ifndef FFMPEG_CONFIG_MAK
6750 FFMPEG_CONFIG_MAK=1
6751 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6752 prefix=$prefix
6753 LIBDIR=\$(DESTDIR)$libdir
6754 SHLIBDIR=\$(DESTDIR)$shlibdir
6755 INCDIR=\$(DESTDIR)$incdir
6756 BINDIR=\$(DESTDIR)$bindir
6757 DATADIR=\$(DESTDIR)$datadir
6758 DOCDIR=\$(DESTDIR)$docdir
6759 MANDIR=\$(DESTDIR)$mandir
6760 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6761 INSTALL_NAME_DIR=$install_name_dir
6762 SRC_PATH=$source_path
6763 SRC_LINK=$source_link
6764 ifndef MAIN_MAKEFILE
6765 SRC_PATH:=\$(SRC_PATH:.%=..%)
6766 endif
6767 CC_IDENT=$cc_ident
6768 ARCH=$arch
6769 INTRINSICS=$intrinsics
6770 CC=$cc
6771 CXX=$cxx
6772 AS=$as
6773 OBJCC=$objcc
6774 LD=$ld
6775 DEPCC=$dep_cc
6776 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6777 DEPAS=$as
6778 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6779 X86ASM=$x86asmexe
6780 DEPX86ASM=$x86asmexe
6781 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
6782 AR=$ar
6783 ARFLAGS=$arflags
6784 AR_O=$ar_o
6785 RANLIB=$ranlib
6786 STRIP=$strip
6787 NVCC=$nvcc
6788 CP=cp -p
6789 LN_S=$ln_s
6790 CPPFLAGS=$CPPFLAGS
6791 CFLAGS=$CFLAGS
6792 CXXFLAGS=$CXXFLAGS
6793 OBJCFLAGS=$OBJCFLAGS
6794 ASFLAGS=$ASFLAGS
6795 NVCCFLAGS=$nvccflags
6796 AS_C=$AS_C
6797 AS_O=$AS_O
6798 OBJCC_C=$OBJCC_C
6799 OBJCC_E=$OBJCC_E
6800 OBJCC_O=$OBJCC_O
6801 CC_C=$CC_C
6802 CC_E=$CC_E
6803 CC_O=$CC_O
6804 CXX_C=$CXX_C
6805 CXX_O=$CXX_O
6806 NVCC_C=$NVCC_C
6807 NVCC_O=$NVCC_O
6808 LD_O=$LD_O
6809 X86ASM_O=$X86ASM_O
6810 LD_LIB=$LD_LIB
6811 LD_PATH=$LD_PATH
6812 DLLTOOL=$dlltool
6813 WINDRES=$windres
6814 DEPWINDRES=$dep_cc
6815 DOXYGEN=$doxygen
6816 LDFLAGS=$LDFLAGS
6817 LDEXEFLAGS=$LDEXEFLAGS
6818 LDLIBFLAGS=$LDLIBFLAGS
6819 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
6820 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
6821 X86ASMFLAGS=$X86ASMFLAGS
6822 BUILDSUF=$build_suffix
6823 PROGSSUF=$progs_suffix
6824 FULLNAME=$FULLNAME
6825 LIBPREF=$LIBPREF
6826 LIBSUF=$LIBSUF
6827 LIBNAME=$LIBNAME
6828 SLIBPREF=$SLIBPREF
6829 SLIBSUF=$SLIBSUF
6830 EXESUF=$EXESUF
6831 EXTRA_VERSION=$extra_version
6832 CCDEP=$CCDEP
6833 CXXDEP=$CXXDEP
6834 CCDEP_FLAGS=$CCDEP_FLAGS
6835 ASDEP=$ASDEP
6836 ASDEP_FLAGS=$ASDEP_FLAGS
6837 X86ASMDEP=$X86ASMDEP
6838 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
6839 CC_DEPFLAGS=$CC_DEPFLAGS
6840 AS_DEPFLAGS=$AS_DEPFLAGS
6841 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
6842 HOSTCC=$host_cc
6843 HOSTLD=$host_ld
6844 HOSTCFLAGS=$host_cflags
6845 HOSTCPPFLAGS=$host_cppflags
6846 HOSTEXESUF=$HOSTEXESUF
6847 HOSTLDFLAGS=$host_ldflags
6848 HOSTEXTRALIBS=$host_extralibs
6849 DEPHOSTCC=$host_cc
6850 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
6851 HOSTCCDEP=$HOSTCCDEP
6852 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
6853 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
6854 HOSTCC_C=$HOSTCC_C
6855 HOSTCC_O=$HOSTCC_O
6856 HOSTLD_O=$HOSTLD_O
6857 TARGET_EXEC=$target_exec $target_exec_args
6858 TARGET_PATH=$target_path
6859 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
6860 CFLAGS-ffplay=${sdl2_cflags}
6861 CFLAGS_HEADERS=$CFLAGS_HEADERS
6862 ZLIB=$($ldflags_filter -lz)
6863 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
6864 EXTRALIBS=$extralibs
6865 COMPAT_OBJS=$compat_objs
6866 INSTALL=$install
6867 LIBTARGET=${LIBTARGET}
6868 SLIBNAME=${SLIBNAME}
6869 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
6870 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
6871 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
6872 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
6873 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
6874 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
6875 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
6876 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
6877 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
6878 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
6879 NOREDZONE_FLAGS=$noredzone_flags
6880 LIBFUZZER_PATH=$libfuzzer_path
6881 IGNORE_TESTS=$ignore_tests
6882 EOF
6883
6884 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
6885
6886 print_program_extralibs(){
6887     eval "program_extralibs=\$${1}_extralibs"
6888     eval echo "EXTRALIBS-${1}=${program_extralibs}" >> ffbuild/config.mak
6889 }
6890
6891 map 'print_program_extralibs $v' $PROGRAM_LIST
6892
6893 cat > $TMPH <<EOF
6894 /* Automatically generated by configure - do not modify! */
6895 #ifndef FFMPEG_CONFIG_H
6896 #define FFMPEG_CONFIG_H
6897 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
6898 #define FFMPEG_LICENSE "$(c_escape $license)"
6899 #define CONFIG_THIS_YEAR 2017
6900 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
6901 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
6902 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
6903 #define av_restrict $_restrict
6904 #define EXTERN_PREFIX "${extern_prefix}"
6905 #define EXTERN_ASM ${extern_prefix}
6906 #define BUILDSUF "$build_suffix"
6907 #define SLIBSUF "$SLIBSUF"
6908 #define HAVE_MMX2 HAVE_MMXEXT
6909 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
6910 EOF
6911
6912 test -n "$assert_level" &&
6913     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
6914
6915 test -n "$malloc_prefix" &&
6916     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
6917
6918 if enabled x86asm; then
6919     append config_files $TMPASM
6920     printf '' >$TMPASM
6921 fi
6922
6923 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
6924
6925
6926 mkdir -p doc
6927 mkdir -p tests
6928 mkdir -p tests/api
6929 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
6930
6931 print_config ARCH_   "$config_files" $ARCH_LIST
6932 print_config HAVE_   "$config_files" $HAVE_LIST
6933 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
6934                                      $CONFIG_EXTRA      \
6935                                      $ALL_COMPONENTS    \
6936
6937 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
6938 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
6939
6940 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
6941 cp_if_changed $TMPH config.h
6942 touch ffbuild/.config
6943
6944 enabled x86asm && cp_if_changed $TMPASM config.asm
6945
6946 cat > $TMPH <<EOF
6947 /* Generated by ffconf */
6948 #ifndef AVUTIL_AVCONFIG_H
6949 #define AVUTIL_AVCONFIG_H
6950 EOF
6951
6952 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
6953
6954 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
6955
6956 cp_if_changed $TMPH libavutil/avconfig.h
6957
6958 # generate the lists of enabled components
6959 print_enabled_components(){
6960     file=$1
6961     struct_name=$2
6962     name=$3
6963     shift 3
6964     echo "static const $struct_name *$name[] = {" > $TMPH
6965     for c in $*; do
6966         enabled $c && printf "    &ff_%s,\n" $c >> $TMPH
6967     done
6968     echo "    NULL };" >> $TMPH
6969     cp_if_changed $TMPH $file
6970 }
6971
6972 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
6973 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
6974
6975 if test -n "$WARNINGS"; then
6976     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
6977     enabled fatal_warnings && exit 1
6978 fi
6979
6980 # Settings for pkg-config files
6981
6982 cat > ffbuild/config.sh <<EOF
6983 # Automatically generated by configure - do not modify!
6984 shared=$shared
6985 build_suffix=$build_suffix
6986 prefix=$prefix
6987 libdir=$libdir
6988 incdir=$incdir
6989 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
6990 source_path=${source_path}
6991 LIBPREF=${LIBPREF}
6992 LIBSUF=${LIBSUF}
6993
6994 extralibs_avutil="$LIBRT $LIBM"
6995 extralibs_avcodec="$extralibs"
6996 extralibs_avformat="$extralibs"
6997 extralibs_avdevice="$extralibs"
6998 extralibs_avfilter="$extralibs"
6999 extralibs_avresample="$LIBM"
7000 extralibs_postproc=""
7001 extralibs_swscale="$LIBM"
7002 extralibs_swresample="$LIBM $LIBSOXR"
7003 EOF
7004
7005 for lib in $LIBRARY_LIST; do
7006     lib_deps="$(eval echo \$${lib}_deps)"
7007     echo ${lib}_deps=\"$lib_deps\" >> ffbuild/config.sh
7008 done