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     metadata_example
1472     muxing_example
1473     qsvdec_example
1474     remuxing_example
1475     resampling_audio_example
1476     scaling_video_example
1477     transcode_aac_example
1478     transcoding_example
1479 "
1480 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1481     bzlib
1482     iconv
1483     libxcb
1484     libxcb_shm
1485     libxcb_shape
1486     libxcb_xfixes
1487     lzma
1488     schannel
1489     sdl
1490     sdl2
1491     securetransport
1492     xlib
1493     zlib
1494 "
1495
1496 EXTERNAL_LIBRARY_GPL_LIST="
1497     avisynth
1498     frei0r
1499     libcdio
1500     librubberband
1501     libvidstab
1502     libx264
1503     libx265
1504     libxavs
1505     libxvid
1506 "
1507
1508 EXTERNAL_LIBRARY_NONFREE_LIST="
1509     decklink
1510     libfdk_aac
1511     openssl
1512 "
1513
1514 EXTERNAL_LIBRARY_VERSION3_LIST="
1515     gmp
1516     libopencore_amrnb
1517     libopencore_amrwb
1518     libvo_amrwbenc
1519 "
1520
1521 EXTERNAL_LIBRARY_GPLV3_LIST="
1522     libsmbclient
1523 "
1524
1525 EXTERNAL_LIBRARY_LIST="
1526     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1527     $EXTERNAL_LIBRARY_GPL_LIST
1528     $EXTERNAL_LIBRARY_NONFREE_LIST
1529     $EXTERNAL_LIBRARY_VERSION3_LIST
1530     $EXTERNAL_LIBRARY_GPLV3_LIST
1531     chromaprint
1532     crystalhd
1533     gcrypt
1534     gnutls
1535     jni
1536     ladspa
1537     libass
1538     libbluray
1539     libbs2b
1540     libcaca
1541     libcelt
1542     libdc1394
1543     libflite
1544     libfontconfig
1545     libfreetype
1546     libfribidi
1547     libgme
1548     libgsm
1549     libiec61883
1550     libilbc
1551     libkvazaar
1552     libmodplug
1553     libmp3lame
1554     libmysofa
1555     libopencv
1556     libopenh264
1557     libopenjpeg
1558     libopenmpt
1559     libopus
1560     libpulse
1561     librsvg
1562     librtmp
1563     libshine
1564     libsmbclient
1565     libsnappy
1566     libsoxr
1567     libspeex
1568     libssh
1569     libtesseract
1570     libtheora
1571     libtwolame
1572     libv4l2
1573     libvmaf
1574     libvorbis
1575     libvpx
1576     libwavpack
1577     libwebp
1578     libzimg
1579     libzmq
1580     libzvbi
1581     mediacodec
1582     openal
1583     opencl
1584     opengl
1585     videotoolbox
1586 "
1587 HWACCEL_AUTODETECT_LIBRARY_LIST="
1588     audiotoolbox
1589     cuda
1590     cuvid
1591     d3d11va
1592     dxva2
1593     nvenc
1594     vaapi
1595     vda
1596     vdpau
1597     videotoolbox_hwaccel
1598     xvmc
1599 "
1600
1601 HWACCEL_LIBRARY_NONFREE_LIST="
1602     cuda_sdk
1603     libnpp
1604 "
1605
1606 HWACCEL_LIBRARY_LIST="
1607     $HWACCEL_AUTODETECT_LIBRARY_LIST
1608     $HWACCEL_LIBRARY_NONFREE_LIST
1609     libmfx
1610     mmal
1611     omx
1612 "
1613
1614 DOCUMENT_LIST="
1615     doc
1616     htmlpages
1617     manpages
1618     podpages
1619     txtpages
1620 "
1621
1622 FEATURE_LIST="
1623     ftrapv
1624     gray
1625     hardcoded_tables
1626     omx_rpi
1627     runtime_cpudetect
1628     safe_bitstream_reader
1629     shared
1630     small
1631     static
1632     swscale_alpha
1633 "
1634
1635 LIBRARY_LIST="
1636     avcodec
1637     avdevice
1638     avfilter
1639     avformat
1640     avresample
1641     avutil
1642     postproc
1643     swresample
1644     swscale
1645 "
1646
1647 LICENSE_LIST="
1648     gpl
1649     nonfree
1650     version3
1651 "
1652
1653 PROGRAM_LIST="
1654     ffplay
1655     ffprobe
1656     ffserver
1657     ffmpeg
1658 "
1659
1660 SUBSYSTEM_LIST="
1661     dct
1662     dwt
1663     error_resilience
1664     faan
1665     fast_unaligned
1666     fft
1667     lsp
1668     lzo
1669     mdct
1670     pixelutils
1671     network
1672     rdft
1673 "
1674
1675 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1676 CONFIG_LIST="
1677     $DOCUMENT_LIST
1678     $EXAMPLE_LIST
1679     $EXTERNAL_LIBRARY_LIST
1680     $HWACCEL_LIBRARY_LIST
1681     $FEATURE_LIST
1682     $LICENSE_LIST
1683     $LIBRARY_LIST
1684     $PROGRAM_LIST
1685     $SUBSYSTEM_LIST
1686     fontconfig
1687     memory_poisoning
1688     neon_clobber_test
1689     ossfuzz
1690     pic
1691     thumb
1692     valgrind_backtrace
1693     xmm_clobber_test
1694     $COMPONENT_LIST
1695 "
1696
1697 THREADS_LIST="
1698     pthreads
1699     os2threads
1700     w32threads
1701 "
1702
1703 ATOMICS_LIST="
1704     atomics_gcc
1705     atomics_suncc
1706     atomics_win32
1707 "
1708
1709 AUTODETECT_LIBS="
1710     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1711     $HWACCEL_AUTODETECT_LIBRARY_LIST
1712     $THREADS_LIST
1713 "
1714
1715 ARCH_LIST="
1716     aarch64
1717     alpha
1718     arm
1719     avr32
1720     avr32_ap
1721     avr32_uc
1722     bfin
1723     ia64
1724     m68k
1725     mips
1726     mips64
1727     parisc
1728     ppc
1729     ppc64
1730     s390
1731     sh4
1732     sparc
1733     sparc64
1734     tilegx
1735     tilepro
1736     tomi
1737     x86
1738     x86_32
1739     x86_64
1740 "
1741
1742 ARCH_EXT_LIST_ARM="
1743     armv5te
1744     armv6
1745     armv6t2
1746     armv8
1747     neon
1748     vfp
1749     vfpv3
1750     setend
1751 "
1752
1753 ARCH_EXT_LIST_MIPS="
1754     mipsfpu
1755     mips32r2
1756     mips32r5
1757     mips64r2
1758     mips32r6
1759     mips64r6
1760     mipsdsp
1761     mipsdspr2
1762     msa
1763 "
1764
1765 ARCH_EXT_LIST_LOONGSON="
1766     loongson2
1767     loongson3
1768     mmi
1769 "
1770
1771 ARCH_EXT_LIST_X86_SIMD="
1772     aesni
1773     amd3dnow
1774     amd3dnowext
1775     avx
1776     avx2
1777     fma3
1778     fma4
1779     mmx
1780     mmxext
1781     sse
1782     sse2
1783     sse3
1784     sse4
1785     sse42
1786     ssse3
1787     xop
1788 "
1789
1790 ARCH_EXT_LIST_PPC="
1791     altivec
1792     dcbzl
1793     ldbrx
1794     power8
1795     ppc4xx
1796     vsx
1797 "
1798
1799 ARCH_EXT_LIST_X86="
1800     $ARCH_EXT_LIST_X86_SIMD
1801     cpunop
1802     i686
1803 "
1804
1805 ARCH_EXT_LIST="
1806     $ARCH_EXT_LIST_ARM
1807     $ARCH_EXT_LIST_PPC
1808     $ARCH_EXT_LIST_X86
1809     $ARCH_EXT_LIST_MIPS
1810     $ARCH_EXT_LIST_LOONGSON
1811 "
1812
1813 ARCH_FEATURES="
1814     aligned_stack
1815     fast_64bit
1816     fast_clz
1817     fast_cmov
1818     local_aligned_8
1819     local_aligned_16
1820     local_aligned_32
1821     simd_align_16
1822     simd_align_32
1823 "
1824
1825 BUILTIN_LIST="
1826     atomic_cas_ptr
1827     machine_rw_barrier
1828     MemoryBarrier
1829     mm_empty
1830     rdtsc
1831     sarestart
1832     sem_timedwait
1833     sync_val_compare_and_swap
1834 "
1835 HAVE_LIST_CMDLINE="
1836     inline_asm
1837     symver
1838     x86asm
1839 "
1840
1841 HAVE_LIST_PUB="
1842     bigendian
1843     fast_unaligned
1844 "
1845
1846 HEADERS_LIST="
1847     alsa_asoundlib_h
1848     altivec_h
1849     arpa_inet_h
1850     asm_types_h
1851     cdio_paranoia_h
1852     cdio_paranoia_paranoia_h
1853     cuda_h
1854     d3d11_h
1855     dispatch_dispatch_h
1856     dev_bktr_ioctl_bt848_h
1857     dev_bktr_ioctl_meteor_h
1858     dev_ic_bt8xx_h
1859     dev_video_bktr_ioctl_bt848_h
1860     dev_video_meteor_ioctl_meteor_h
1861     direct_h
1862     dirent_h
1863     dlfcn_h
1864     dxgidebug_h
1865     dxva_h
1866     ES2_gl_h
1867     gsm_h
1868     io_h
1869     mach_mach_time_h
1870     machine_ioctl_bt848_h
1871     machine_ioctl_meteor_h
1872     malloc_h
1873     opencv2_core_core_c_h
1874     openjpeg_2_2_openjpeg_h
1875     openjpeg_2_1_openjpeg_h
1876     openjpeg_2_0_openjpeg_h
1877     openjpeg_1_5_openjpeg_h
1878     OpenGL_gl3_h
1879     poll_h
1880     sndio_h
1881     soundcard_h
1882     stdatomic_h
1883     sys_mman_h
1884     sys_param_h
1885     sys_resource_h
1886     sys_select_h
1887     sys_soundcard_h
1888     sys_time_h
1889     sys_un_h
1890     sys_videoio_h
1891     termios_h
1892     udplite_h
1893     unistd_h
1894     valgrind_valgrind_h
1895     windows_h
1896     winsock2_h
1897 "
1898
1899 INTRINSICS_LIST="
1900     intrinsics_neon
1901 "
1902
1903 COMPLEX_FUNCS="
1904     cabs
1905     cexp
1906 "
1907
1908 MATH_FUNCS="
1909     atanf
1910     atan2f
1911     cbrt
1912     cbrtf
1913     copysign
1914     cosf
1915     erf
1916     exp2
1917     exp2f
1918     expf
1919     hypot
1920     isfinite
1921     isinf
1922     isnan
1923     ldexpf
1924     llrint
1925     llrintf
1926     log2
1927     log2f
1928     log10f
1929     lrint
1930     lrintf
1931     powf
1932     rint
1933     round
1934     roundf
1935     sinf
1936     trunc
1937     truncf
1938 "
1939
1940 SYSTEM_FUNCS="
1941     access
1942     aligned_malloc
1943     arc4random
1944     clock_gettime
1945     closesocket
1946     CommandLineToArgvW
1947     CoTaskMemFree
1948     CryptGenRandom
1949     dlopen
1950     fcntl
1951     flt_lim
1952     fork
1953     getaddrinfo
1954     gethrtime
1955     getopt
1956     GetProcessAffinityMask
1957     GetProcessMemoryInfo
1958     GetProcessTimes
1959     getrusage
1960     GetSystemTimeAsFileTime
1961     gettimeofday
1962     glob
1963     glXGetProcAddress
1964     gmtime_r
1965     inet_aton
1966     isatty
1967     jack_port_get_latency_range
1968     kbhit
1969     LoadLibrary
1970     localtime_r
1971     lstat
1972     lzo1x_999_compress
1973     mach_absolute_time
1974     MapViewOfFile
1975     memalign
1976     mkstemp
1977     mmap
1978     mprotect
1979     nanosleep
1980     PeekNamedPipe
1981     posix_memalign
1982     pthread_cancel
1983     sched_getaffinity
1984     SetConsoleTextAttribute
1985     SetConsoleCtrlHandler
1986     setmode
1987     setrlimit
1988     Sleep
1989     strerror_r
1990     sysconf
1991     sysctl
1992     usleep
1993     UTGetOSTypeFromString
1994     VirtualAlloc
1995     wglGetProcAddress
1996 "
1997
1998 TOOLCHAIN_FEATURES="
1999     as_dn_directive
2000     as_fpu_directive
2001     as_func
2002     as_object_arch
2003     asm_mod_q
2004     attribute_may_alias
2005     attribute_packed
2006     blocks_extension
2007     ebp_available
2008     ebx_available
2009     gnu_as
2010     gnu_windres
2011     ibm_asm
2012     inline_asm_direct_symbol_refs
2013     inline_asm_labels
2014     inline_asm_nonlocal_labels
2015     pragma_deprecated
2016     rsync_contimeout
2017     symver_asm_label
2018     symver_gnu_asm
2019     vfp_args
2020     xform_asm
2021     xmm_clobbers
2022 "
2023
2024 TYPES_LIST="
2025     CONDITION_VARIABLE_Ptr
2026     socklen_t
2027     struct_addrinfo
2028     struct_group_source_req
2029     struct_ip_mreq_source
2030     struct_ipv6_mreq
2031     struct_msghdr_msg_flags
2032     struct_pollfd
2033     struct_rusage_ru_maxrss
2034     struct_sctp_event_subscribe
2035     struct_sockaddr_in6
2036     struct_sockaddr_sa_len
2037     struct_sockaddr_storage
2038     struct_stat_st_mtim_tv_nsec
2039     struct_v4l2_frmivalenum_discrete
2040 "
2041
2042 HAVE_LIST="
2043     $ARCH_EXT_LIST
2044     $(add_suffix _external $ARCH_EXT_LIST)
2045     $(add_suffix _inline   $ARCH_EXT_LIST)
2046     $ARCH_FEATURES
2047     $ATOMICS_LIST
2048     $BUILTIN_LIST
2049     $COMPLEX_FUNCS
2050     $HAVE_LIST_CMDLINE
2051     $HAVE_LIST_PUB
2052     $HEADERS_LIST
2053     $INTRINSICS_LIST
2054     $MATH_FUNCS
2055     $SYSTEM_FUNCS
2056     $THREADS_LIST
2057     $TOOLCHAIN_FEATURES
2058     $TYPES_LIST
2059     alsa
2060     atomics_native
2061     dos_paths
2062     jack
2063     libc_msvcrt
2064     makeinfo
2065     makeinfo_html
2066     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2067     perl
2068     pod2man
2069     sdl2
2070     section_data_rel_ro
2071     sndio
2072     texi2html
2073     threads
2074     vaapi_drm
2075     vaapi_x11
2076     vdpau_x11
2077     winrt
2078 "
2079
2080 # options emitted with CONFIG_ prefix but not available on the command line
2081 CONFIG_EXTRA="
2082     aandcttables
2083     ac3dsp
2084     audio_frame_queue
2085     audiodsp
2086     blockdsp
2087     bswapdsp
2088     cabac
2089     dirac_parse
2090     dvprofile
2091     exif
2092     faandct
2093     faanidct
2094     fdctdsp
2095     flacdsp
2096     fmtconvert
2097     frame_thread_encoder
2098     g722dsp
2099     golomb
2100     gplv3
2101     h263dsp
2102     h264chroma
2103     h264dsp
2104     h264parse
2105     h264pred
2106     h264qpel
2107     hevcparse
2108     hpeldsp
2109     huffman
2110     huffyuvdsp
2111     huffyuvencdsp
2112     idctdsp
2113     iirfilter
2114     mdct15
2115     intrax8
2116     iso_media
2117     ividsp
2118     jpegtables
2119     lgplv3
2120     libx262
2121     llauddsp
2122     llviddsp
2123     llvidencdsp
2124     lpc
2125     lzf
2126     me_cmp
2127     mpeg_er
2128     mpegaudio
2129     mpegaudiodsp
2130     mpegaudioheader
2131     mpegvideo
2132     mpegvideoenc
2133     mss34dsp
2134     pixblockdsp
2135     qpeldsp
2136     qsv
2137     qsvdec
2138     qsvenc
2139     rangecoder
2140     riffdec
2141     riffenc
2142     rtpdec
2143     rtpenc_chain
2144     rv34dsp
2145     sinewin
2146     snappy
2147     srtp
2148     startcode
2149     texturedsp
2150     texturedspenc
2151     tpeldsp
2152     vaapi_encode
2153     vc1dsp
2154     videodsp
2155     vp3dsp
2156     vp56dsp
2157     vp8dsp
2158     vt_bt2020
2159     wma_freqs
2160     wmv2dsp
2161 "
2162
2163 CMDLINE_SELECT="
2164     $ARCH_EXT_LIST
2165     $CONFIG_LIST
2166     $HAVE_LIST_CMDLINE
2167     $THREADS_LIST
2168     asm
2169     cross_compile
2170     debug
2171     extra_warnings
2172     logging
2173     lto
2174     optimizations
2175     rpath
2176     stripping
2177 "
2178
2179 PATHS_LIST="
2180     bindir
2181     datadir
2182     docdir
2183     incdir
2184     libdir
2185     mandir
2186     pkgconfigdir
2187     prefix
2188     shlibdir
2189     install_name_dir
2190 "
2191
2192 CMDLINE_SET="
2193     $PATHS_LIST
2194     ar
2195     arch
2196     as
2197     assert_level
2198     build_suffix
2199     cc
2200     objcc
2201     cpu
2202     cross_prefix
2203     custom_allocator
2204     cxx
2205     dep_cc
2206     doxygen
2207     env
2208     extra_version
2209     gas
2210     host_cc
2211     host_cflags
2212     host_extralibs
2213     host_ld
2214     host_ldflags
2215     host_os
2216     ignore_tests
2217     install
2218     ld
2219     ln_s
2220     logfile
2221     malloc_prefix
2222     nm
2223     optflags
2224     nvccflags
2225     pkg_config
2226     pkg_config_flags
2227     progs_suffix
2228     random_seed
2229     ranlib
2230     samples
2231     strip
2232     sws_max_filter_size
2233     sysinclude
2234     sysroot
2235     target_exec
2236     target_os
2237     target_path
2238     target_samples
2239     tempprefix
2240     toolchain
2241     valgrind
2242     x86asmexe
2243 "
2244
2245 CMDLINE_APPEND="
2246     extra_cflags
2247     extra_cxxflags
2248     extra_objcflags
2249     host_cppflags
2250 "
2251
2252 # code dependency declarations
2253
2254 # architecture extensions
2255
2256 armv5te_deps="arm"
2257 armv6_deps="arm"
2258 armv6t2_deps="arm"
2259 armv8_deps="aarch64"
2260 neon_deps_any="aarch64 arm"
2261 intrinsics_neon_deps="neon"
2262 vfp_deps_any="aarch64 arm"
2263 vfpv3_deps="vfp"
2264 setend_deps="arm"
2265
2266 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2267
2268 loongson2_deps="mips"
2269 loongson3_deps="mips"
2270 mipsfpu_deps="mips"
2271 mipsdsp_deps="mips"
2272 mipsdspr2_deps="mips"
2273 mips32r2_deps="mips"
2274 mips32r5_deps="mips"
2275 mips32r6_deps="mips"
2276 mips64r2_deps="mips"
2277 mips64r6_deps="mips"
2278 msa_deps="mipsfpu"
2279 mmi_deps="mips"
2280
2281 altivec_deps="ppc"
2282 dcbzl_deps="ppc"
2283 ldbrx_deps="ppc"
2284 ppc4xx_deps="ppc"
2285 vsx_deps="altivec"
2286 power8_deps="vsx"
2287
2288 cpunop_deps="i686"
2289 x86_64_select="i686"
2290 x86_64_suggest="fast_cmov"
2291
2292 amd3dnow_deps="mmx"
2293 amd3dnowext_deps="amd3dnow"
2294 i686_deps="x86"
2295 mmx_deps="x86"
2296 mmxext_deps="mmx"
2297 sse_deps="mmxext"
2298 sse2_deps="sse"
2299 sse3_deps="sse2"
2300 ssse3_deps="sse3"
2301 sse4_deps="ssse3"
2302 sse42_deps="sse4"
2303 aesni_deps="sse42"
2304 avx_deps="sse42"
2305 xop_deps="avx"
2306 fma3_deps="avx"
2307 fma4_deps="avx"
2308 avx2_deps="avx"
2309
2310 mmx_external_deps="x86asm"
2311 mmx_inline_deps="inline_asm"
2312 mmx_suggest="mmx_external mmx_inline"
2313
2314 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2315     eval dep=\$${ext}_deps
2316     eval ${ext}_external_deps='"${dep}_external"'
2317     eval ${ext}_inline_deps='"${dep}_inline"'
2318     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2319 done
2320
2321 aligned_stack_if_any="aarch64 ppc x86"
2322 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2323 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2324 fast_unaligned_if_any="aarch64 ppc x86"
2325 simd_align_16_if_any="altivec neon sse"
2326 simd_align_32_if_any="avx"
2327
2328 # system capabilities
2329 symver_if_any="symver_asm_label symver_gnu_asm"
2330 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
2331
2332 # threading support
2333 atomics_gcc_if="sync_val_compare_and_swap"
2334 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2335 atomics_win32_if="MemoryBarrier"
2336 atomics_native_if_any="$ATOMICS_LIST"
2337 w32threads_deps="atomics_native"
2338 threads_if_any="$THREADS_LIST"
2339
2340 # subsystems
2341 dct_select="rdft"
2342 dirac_parse_select="golomb"
2343 error_resilience_select="me_cmp"
2344 faandct_deps="faan fdctdsp"
2345 faanidct_deps="faan idctdsp"
2346 h264dsp_select="startcode"
2347 hevcparse_select="golomb"
2348 frame_thread_encoder_deps="encoders threads"
2349 intrax8_select="blockdsp idctdsp"
2350 mdct_select="fft"
2351 mdct15_select="fft"
2352 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2353 mpeg_er_select="error_resilience"
2354 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2355 mpegaudiodsp_select="dct"
2356 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2357 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2358 vc1dsp_select="h264chroma qpeldsp startcode"
2359 rdft_select="fft"
2360
2361 # decoders / encoders
2362 aac_decoder_select="mdct15 mdct sinewin"
2363 aac_fixed_decoder_select="mdct sinewin"
2364 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2365 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2366 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2367 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2368 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2369 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2370 adpcm_g722_decoder_select="g722dsp"
2371 adpcm_g722_encoder_select="g722dsp"
2372 aic_decoder_select="golomb idctdsp"
2373 alac_encoder_select="lpc"
2374 als_decoder_select="bswapdsp"
2375 amrnb_decoder_select="lsp"
2376 amrwb_decoder_select="lsp"
2377 amv_decoder_select="sp5x_decoder exif"
2378 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2379 ape_decoder_select="bswapdsp llauddsp"
2380 apng_decoder_select="zlib"
2381 apng_encoder_select="llvidencdsp zlib"
2382 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2383 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2384 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2385 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2386 atrac1_decoder_select="mdct sinewin"
2387 atrac3_decoder_select="mdct"
2388 atrac3p_decoder_select="mdct sinewin"
2389 avrn_decoder_select="exif jpegtables"
2390 bink_decoder_select="blockdsp hpeldsp"
2391 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2392 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2393 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2394 clearvideo_decoder_select="idctdsp"
2395 cllc_decoder_select="bswapdsp"
2396 comfortnoise_encoder_select="lpc"
2397 cook_decoder_select="audiodsp mdct sinewin"
2398 cscd_decoder_select="lzo"
2399 cscd_decoder_suggest="zlib"
2400 dca_decoder_select="mdct"
2401 dds_decoder_select="texturedsp"
2402 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2403 dnxhd_decoder_select="blockdsp idctdsp"
2404 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2405 dolby_e_decoder_select="mdct"
2406 dvvideo_decoder_select="dvprofile idctdsp"
2407 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2408 dxa_decoder_select="zlib"
2409 dxv_decoder_select="lzf texturedsp"
2410 eac3_decoder_select="ac3_decoder"
2411 eac3_encoder_select="ac3_encoder"
2412 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2413 eatgq_decoder_select="aandcttables"
2414 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2415 exr_decoder_select="zlib"
2416 ffv1_decoder_select="rangecoder"
2417 ffv1_encoder_select="rangecoder"
2418 ffvhuff_decoder_select="huffyuv_decoder"
2419 ffvhuff_encoder_select="huffyuv_encoder"
2420 fic_decoder_select="golomb"
2421 flac_decoder_select="flacdsp"
2422 flac_encoder_select="bswapdsp flacdsp lpc"
2423 flashsv2_decoder_select="zlib"
2424 flashsv2_encoder_select="zlib"
2425 flashsv_decoder_select="zlib"
2426 flashsv_encoder_select="zlib"
2427 flv_decoder_select="h263_decoder"
2428 flv_encoder_select="h263_encoder"
2429 fourxm_decoder_select="blockdsp bswapdsp"
2430 fraps_decoder_select="bswapdsp huffman"
2431 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2432 g729_decoder_select="audiodsp"
2433 h261_decoder_select="mpegvideo"
2434 h261_encoder_select="aandcttables mpegvideoenc"
2435 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2436 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2437 h263i_decoder_select="h263_decoder"
2438 h263p_decoder_select="h263_decoder"
2439 h263p_encoder_select="h263_encoder"
2440 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2441 h264_decoder_suggest="error_resilience"
2442 hap_decoder_select="snappy texturedsp"
2443 hap_encoder_deps="libsnappy"
2444 hap_encoder_select="texturedspenc"
2445 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2446 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2447 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2448 iac_decoder_select="imc_decoder"
2449 imc_decoder_select="bswapdsp fft mdct sinewin"
2450 indeo3_decoder_select="hpeldsp"
2451 indeo4_decoder_select="ividsp"
2452 indeo5_decoder_select="ividsp"
2453 interplay_video_decoder_select="hpeldsp"
2454 jpegls_decoder_select="mjpeg_decoder"
2455 jv_decoder_select="blockdsp"
2456 lagarith_decoder_select="llviddsp"
2457 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2458 magicyuv_decoder_select="llviddsp"
2459 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2460 metasound_decoder_select="lsp mdct sinewin"
2461 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2462 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2463 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2464 mjpegb_decoder_select="mjpeg_decoder"
2465 mlp_decoder_select="mlp_parser"
2466 mlp_encoder_select="lpc"
2467 motionpixels_decoder_select="bswapdsp"
2468 mp1_decoder_select="mpegaudio"
2469 mp1float_decoder_select="mpegaudio"
2470 mp2_decoder_select="mpegaudio"
2471 mp2float_decoder_select="mpegaudio"
2472 mp3_decoder_select="mpegaudio"
2473 mp3adu_decoder_select="mpegaudio"
2474 mp3adufloat_decoder_select="mpegaudio"
2475 mp3float_decoder_select="mpegaudio"
2476 mp3on4_decoder_select="mpegaudio"
2477 mp3on4float_decoder_select="mpegaudio"
2478 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2479 mpc8_decoder_select="mpegaudiodsp"
2480 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2481 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2482 mpegvideo_decoder_select="mpegvideo"
2483 mpeg1video_decoder_select="mpegvideo"
2484 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2485 mpeg2video_decoder_select="mpegvideo"
2486 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2487 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2488 mpeg4_encoder_select="h263_encoder"
2489 msa1_decoder_select="mss34dsp"
2490 mscc_decoder_select="zlib"
2491 msmpeg4v1_decoder_select="h263_decoder"
2492 msmpeg4v2_decoder_select="h263_decoder"
2493 msmpeg4v2_encoder_select="h263_encoder"
2494 msmpeg4v3_decoder_select="h263_decoder"
2495 msmpeg4v3_encoder_select="h263_encoder"
2496 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2497 mts2_decoder_select="mss34dsp"
2498 mxpeg_decoder_select="mjpeg_decoder"
2499 nellymoser_decoder_select="mdct sinewin"
2500 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2501 nuv_decoder_select="idctdsp lzo"
2502 on2avc_decoder_select="mdct"
2503 opus_decoder_deps="swresample"
2504 opus_decoder_select="mdct15"
2505 opus_encoder_select="audio_frame_queue mdct15"
2506 png_decoder_select="zlib"
2507 png_encoder_select="llvidencdsp zlib"
2508 prores_decoder_select="blockdsp idctdsp"
2509 prores_encoder_select="fdctdsp"
2510 qcelp_decoder_select="lsp"
2511 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2512 ra_144_decoder_select="audiodsp"
2513 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2514 ralf_decoder_select="golomb"
2515 rawvideo_decoder_select="bswapdsp"
2516 rscc_decoder_select="zlib"
2517 rtjpeg_decoder_select="me_cmp"
2518 rv10_decoder_select="h263_decoder"
2519 rv10_encoder_select="h263_encoder"
2520 rv20_decoder_select="h263_decoder"
2521 rv20_encoder_select="h263_encoder"
2522 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2523 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2524 screenpresso_decoder_select="zlib"
2525 shorten_decoder_select="bswapdsp"
2526 sipr_decoder_select="lsp"
2527 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2528 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2529 sonic_decoder_select="golomb rangecoder"
2530 sonic_encoder_select="golomb rangecoder"
2531 sonic_ls_encoder_select="golomb rangecoder"
2532 sp5x_decoder_select="mjpeg_decoder"
2533 srgc_decoder_select="zlib"
2534 svq1_decoder_select="hpeldsp"
2535 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2536 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2537 svq3_decoder_suggest="zlib"
2538 tak_decoder_select="audiodsp"
2539 tdsc_decoder_select="zlib mjpeg_decoder"
2540 theora_decoder_select="vp3_decoder"
2541 thp_decoder_select="mjpeg_decoder"
2542 tiff_decoder_suggest="zlib lzma"
2543 tiff_encoder_suggest="zlib"
2544 truehd_decoder_select="mlp_parser"
2545 truehd_encoder_select="lpc"
2546 truemotion2_decoder_select="bswapdsp"
2547 truespeech_decoder_select="bswapdsp"
2548 tscc_decoder_select="zlib"
2549 twinvq_decoder_select="mdct lsp sinewin"
2550 txd_decoder_select="texturedsp"
2551 utvideo_decoder_select="bswapdsp llviddsp"
2552 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2553 vble_decoder_select="llviddsp"
2554 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2555 vc1_qsv_decoder_deps="libmfx"
2556 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2557 vc1image_decoder_select="vc1_decoder"
2558 vorbis_decoder_select="mdct"
2559 vorbis_encoder_select="mdct"
2560 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2561 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2562 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2563 vp6a_decoder_select="vp6_decoder"
2564 vp6f_decoder_select="vp6_decoder"
2565 vp7_decoder_select="h264pred videodsp vp8dsp"
2566 vp8_decoder_select="h264pred videodsp vp8dsp"
2567 vp9_decoder_select="videodsp vp9_parser"
2568 webp_decoder_select="vp8_decoder exif"
2569 wmalossless_decoder_select="llauddsp"
2570 wmapro_decoder_select="mdct sinewin wma_freqs"
2571 wmav1_decoder_select="mdct sinewin wma_freqs"
2572 wmav1_encoder_select="mdct sinewin wma_freqs"
2573 wmav2_decoder_select="mdct sinewin wma_freqs"
2574 wmav2_encoder_select="mdct sinewin wma_freqs"
2575 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2576 wmv1_decoder_select="h263_decoder"
2577 wmv1_encoder_select="h263_encoder"
2578 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2579 wmv2_encoder_select="h263_encoder wmv2dsp"
2580 wmv3_decoder_select="vc1_decoder"
2581 wmv3image_decoder_select="wmv3_decoder"
2582 xma1_decoder_select="wmapro_decoder"
2583 xma2_decoder_select="wmapro_decoder"
2584 zerocodec_decoder_select="zlib"
2585 zlib_decoder_select="zlib"
2586 zlib_encoder_select="zlib"
2587 zmbv_decoder_select="zlib"
2588 zmbv_encoder_select="zlib"
2589
2590 # platform codecs
2591 audiotoolbox_deps="AudioToolbox_AudioToolbox_h"
2592 audiotoolbox_extralibs="-framework CoreFoundation -framework AudioToolbox -framework CoreMedia"
2593
2594 # hardware accelerators
2595 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2596 cuda_deps_any="dlopen LoadLibrary"
2597 cuvid_deps="cuda"
2598 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2599 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32"
2600 dxva2_extralibs="-luser32"
2601 vda_framework_deps="VideoDecodeAcceleration_VDADecoder_h blocks_extension"
2602 vda_framework_extralibs="-framework VideoDecodeAcceleration"
2603 vda_deps="vda_framework pthreads"
2604 vda_extralibs="-framework CoreFoundation -framework QuartzCore"
2605 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2606 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2607 xvmc_deps="X11_extensions_XvMClib_h"
2608
2609 h263_vaapi_hwaccel_deps="vaapi"
2610 h263_vaapi_hwaccel_select="h263_decoder"
2611 h263_videotoolbox_hwaccel_deps="videotoolbox"
2612 h263_videotoolbox_hwaccel_select="h263_decoder"
2613 h264_cuvid_hwaccel_deps="cuda cuvid"
2614 h264_cuvid_hwaccel_select="h264_cuvid_decoder"
2615 h264_d3d11va_hwaccel_deps="d3d11va"
2616 h264_d3d11va_hwaccel_select="h264_decoder"
2617 h264_d3d11va2_hwaccel_deps="d3d11va"
2618 h264_d3d11va2_hwaccel_select="h264_decoder"
2619 h264_dxva2_hwaccel_deps="dxva2"
2620 h264_dxva2_hwaccel_select="h264_decoder"
2621 h264_mediacodec_hwaccel_deps="mediacodec"
2622 h264_mmal_hwaccel_deps="mmal"
2623 h264_qsv_hwaccel_deps="libmfx"
2624 h264_vaapi_hwaccel_deps="vaapi"
2625 h264_vaapi_hwaccel_select="h264_decoder"
2626 h264_vda_hwaccel_deps="vda"
2627 h264_vda_hwaccel_select="h264_decoder"
2628 h264_vda_old_hwaccel_deps="vda"
2629 h264_vda_old_hwaccel_select="h264_decoder"
2630 h264_vdpau_hwaccel_deps="vdpau"
2631 h264_vdpau_hwaccel_select="h264_decoder"
2632 h264_videotoolbox_hwaccel_deps="videotoolbox"
2633 h264_videotoolbox_hwaccel_select="h264_decoder"
2634 hevc_cuvid_hwaccel_deps="cuda cuvid"
2635 hevc_cuvid_hwaccel_select="hevc_cuvid_decoder"
2636 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2637 hevc_d3d11va_hwaccel_select="hevc_decoder"
2638 hevc_mediacodec_hwaccel_deps="mediacodec"
2639 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2640 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2641 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2642 hevc_dxva2_hwaccel_select="hevc_decoder"
2643 hevc_qsv_hwaccel_deps="libmfx"
2644 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2645 hevc_vaapi_hwaccel_select="hevc_decoder"
2646 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2647 hevc_vdpau_hwaccel_select="hevc_decoder"
2648 mjpeg_cuvid_hwaccel_deps="cuda cuvid"
2649 mjpeg_cuvid_hwaccel_select="mjpeg_cuvid_decoder"
2650 mpeg_xvmc_hwaccel_deps="xvmc"
2651 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2652 mpeg1_cuvid_hwaccel_deps="cuda cuvid"
2653 mpeg1_cuvid_hwaccel_select="mpeg1_cuvid_decoder"
2654 mpeg1_vdpau_hwaccel_deps="vdpau"
2655 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2656 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2657 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2658 mpeg1_xvmc_hwaccel_deps="xvmc"
2659 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2660 mpeg2_cuvid_hwaccel_deps="cuda cuvid"
2661 mpeg2_cuvid_hwaccel_select="mpeg2_cuvid_decoder"
2662 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2663 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2664 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2665 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2666 mpeg2_dxva2_hwaccel_deps="dxva2"
2667 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2668 mpeg2_mediacodec_hwaccel_deps="mediacodec"
2669 mpeg2_mmal_hwaccel_deps="mmal"
2670 mpeg2_qsv_hwaccel_deps="libmfx"
2671 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2672 mpeg2_vaapi_hwaccel_deps="vaapi"
2673 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2674 mpeg2_vdpau_hwaccel_deps="vdpau"
2675 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2676 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2677 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2678 mpeg2_xvmc_hwaccel_deps="xvmc"
2679 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2680 mpeg4_cuvid_hwaccel_deps="cuda cuvid"
2681 mpeg4_cuvid_hwaccel_select="mpeg4_cuvid_decoder"
2682 mpeg4_mediacodec_hwaccel_deps="mediacodec"
2683 mpeg4_mmal_hwaccel_deps="mmal"
2684 mpeg4_vaapi_hwaccel_deps="vaapi"
2685 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2686 mpeg4_vdpau_hwaccel_deps="vdpau"
2687 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2688 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2689 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2690 vc1_cuvid_hwaccel_deps="cuda cuvid"
2691 vc1_cuvid_hwaccel_select="vc1_cuvid_decoder"
2692 vc1_d3d11va_hwaccel_deps="d3d11va"
2693 vc1_d3d11va_hwaccel_select="vc1_decoder"
2694 vc1_d3d11va2_hwaccel_deps="d3d11va"
2695 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2696 vc1_dxva2_hwaccel_deps="dxva2"
2697 vc1_dxva2_hwaccel_select="vc1_decoder"
2698 vc1_mmal_hwaccel_deps="mmal"
2699 vc1_qsv_hwaccel_deps="libmfx"
2700 vc1_qsv_hwaccel_select="qsvdec_vc1"
2701 vc1_vaapi_hwaccel_deps="vaapi"
2702 vc1_vaapi_hwaccel_select="vc1_decoder"
2703 vc1_vdpau_hwaccel_deps="vdpau"
2704 vc1_vdpau_hwaccel_select="vc1_decoder"
2705 vp8_cuvid_hwaccel_deps="cuda cuvid"
2706 vp8_cuvid_hwaccel_select="vp8_cuvid_decoder"
2707 vp9_cuvid_hwaccel_deps="cuda cuvid"
2708 vp9_cuvid_hwaccel_select="vp9_cuvid_decoder"
2709 vp8_mediacodec_hwaccel_deps="mediacodec"
2710 vp8_qsv_hwaccel_deps="libmfx"
2711 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2712 vp9_d3d11va_hwaccel_select="vp9_decoder"
2713 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2714 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2715 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2716 vp9_dxva2_hwaccel_select="vp9_decoder"
2717 vp9_mediacodec_hwaccel_deps="mediacodec"
2718 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2719 vp9_vaapi_hwaccel_select="vp9_decoder"
2720 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2721 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2722 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2723 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2724 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2725
2726 # hardware-accelerated codecs
2727 omx_deps="dlopen pthreads"
2728 omx_extralibs='$ldl'
2729 omx_rpi_select="omx"
2730 qsvdec_select="qsv"
2731 qsvenc_select="qsv"
2732 vaapi_encode_deps="vaapi"
2733
2734 hwupload_cuda_filter_deps="cuda"
2735 scale_npp_filter_deps="cuda libnpp"
2736 scale_cuda_filter_deps="cuda_sdk"
2737
2738 nvenc_deps="cuda"
2739 nvenc_deps_any="dlopen LoadLibrary"
2740 nvenc_encoder_deps="nvenc"
2741
2742 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2743 h264_cuvid_decoder_deps="cuda cuvid"
2744 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2745 h264_mediacodec_decoder_deps="mediacodec"
2746 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2747 h264_mmal_decoder_deps="mmal"
2748 h264_nvenc_encoder_deps="nvenc"
2749 h264_omx_encoder_deps="omx"
2750 h264_qsv_decoder_deps="libmfx"
2751 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2752 h264_qsv_encoder_deps="libmfx"
2753 h264_qsv_encoder_select="qsvenc"
2754 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2755 h264_vaapi_encoder_select="vaapi_encode golomb"
2756 h264_vda_decoder_deps="vda"
2757 h264_vda_decoder_select="h264_decoder"
2758 h264_vdpau_decoder_deps="vdpau"
2759 h264_vdpau_decoder_select="h264_decoder"
2760 hevc_cuvid_decoder_deps="cuda cuvid"
2761 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2762 hevc_mediacodec_decoder_deps="mediacodec"
2763 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2764 hevc_nvenc_encoder_deps="nvenc"
2765 hevc_qsv_decoder_deps="libmfx"
2766 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2767 hevc_qsv_encoder_deps="libmfx"
2768 hevc_qsv_encoder_select="hevcparse qsvenc"
2769 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2770 hevc_vaapi_encoder_select="vaapi_encode golomb"
2771 mjpeg_cuvid_decoder_deps="cuda cuvid"
2772 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2773 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2774 mpeg1_cuvid_decoder_deps="cuda cuvid"
2775 mpeg1_vdpau_decoder_deps="vdpau"
2776 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2777 mpeg2_crystalhd_decoder_select="crystalhd"
2778 mpeg2_cuvid_decoder_deps="cuda cuvid"
2779 mpeg2_mmal_decoder_deps="mmal"
2780 mpeg2_mediacodec_decoder_deps="mediacodec"
2781 mpeg2_qsv_decoder_deps="libmfx"
2782 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2783 mpeg2_qsv_encoder_deps="libmfx"
2784 mpeg2_qsv_encoder_select="qsvenc"
2785 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2786 mpeg2_vaapi_encoder_select="vaapi_encode"
2787 mpeg4_crystalhd_decoder_select="crystalhd"
2788 mpeg4_cuvid_decoder_deps="cuda cuvid"
2789 mpeg4_mediacodec_decoder_deps="mediacodec"
2790 mpeg4_mmal_decoder_deps="mmal"
2791 mpeg4_omx_encoder_deps="omx"
2792 mpeg4_vdpau_decoder_deps="vdpau"
2793 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2794 mpeg_vdpau_decoder_deps="vdpau"
2795 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2796 msmpeg4_crystalhd_decoder_select="crystalhd"
2797 nvenc_h264_encoder_select="h264_nvenc_encoder"
2798 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2799 vc1_crystalhd_decoder_select="crystalhd"
2800 vc1_cuvid_decoder_deps="cuda cuvid"
2801 vc1_mmal_decoder_deps="mmal"
2802 vc1_vdpau_decoder_deps="vdpau"
2803 vc1_vdpau_decoder_select="vc1_decoder"
2804 vp8_cuvid_decoder_deps="cuda cuvid"
2805 vp8_mediacodec_decoder_deps="mediacodec"
2806 vp8_qsv_decoder_deps="libmfx"
2807 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2808 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2809 vp8_vaapi_encoder_select="vaapi_encode"
2810 vp9_cuvid_decoder_deps="cuda cuvid"
2811 vp9_mediacodec_decoder_deps="mediacodec"
2812 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2813 vp9_vaapi_encoder_select="vaapi_encode"
2814 wmv3_crystalhd_decoder_select="crystalhd"
2815 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2816
2817 # parsers
2818 h264_parser_select="golomb h264dsp h264parse"
2819 hevc_parser_select="hevcparse"
2820 mpegaudio_parser_select="mpegaudioheader"
2821 mpegvideo_parser_select="mpegvideo"
2822 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2823 vc1_parser_select="vc1dsp"
2824
2825 # bitstream_filters
2826 mjpeg2jpeg_bsf_select="jpegtables"
2827
2828 # external libraries
2829 aac_at_decoder_deps="audiotoolbox"
2830 ac3_at_decoder_deps="audiotoolbox"
2831 ac3_at_decoder_select="ac3_parser"
2832 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2833 alac_at_decoder_deps="audiotoolbox"
2834 amr_nb_at_decoder_deps="audiotoolbox"
2835 avisynth_deps_any="dlopen LoadLibrary"
2836 avisynth_demuxer_deps="avisynth"
2837 avisynth_demuxer_select="riffdec"
2838 eac3_at_decoder_deps="audiotoolbox"
2839 eac3_at_decoder_select="ac3_parser"
2840 gsm_ms_at_decoder_deps="audiotoolbox"
2841 ilbc_at_decoder_deps="audiotoolbox"
2842 mp1_at_decoder_deps="audiotoolbox"
2843 mp2_at_decoder_deps="audiotoolbox"
2844 mp3_at_decoder_deps="audiotoolbox"
2845 mp1_at_decoder_select="mpegaudioheader"
2846 mp2_at_decoder_select="mpegaudioheader"
2847 mp3_at_decoder_select="mpegaudioheader"
2848 pcm_alaw_at_decoder_deps="audiotoolbox"
2849 pcm_mulaw_at_decoder_deps="audiotoolbox"
2850 qdmc_at_decoder_deps="audiotoolbox"
2851 qdm2_at_decoder_deps="audiotoolbox"
2852 aac_at_encoder_deps="audiotoolbox"
2853 aac_at_encoder_select="audio_frame_queue"
2854 alac_at_encoder_deps="audiotoolbox"
2855 alac_at_encoder_select="audio_frame_queue"
2856 ilbc_at_encoder_deps="audiotoolbox"
2857 ilbc_at_encoder_select="audio_frame_queue"
2858 pcm_alaw_at_encoder_deps="audiotoolbox"
2859 pcm_alaw_at_encoder_select="audio_frame_queue"
2860 pcm_mulaw_at_encoder_deps="audiotoolbox"
2861 pcm_mulaw_at_encoder_select="audio_frame_queue"
2862 chromaprint_muxer_deps="chromaprint"
2863 h264_videotoolbox_encoder_deps="videotoolbox_encoder pthreads"
2864 libcelt_decoder_deps="libcelt"
2865 libfdk_aac_decoder_deps="libfdk_aac"
2866 libfdk_aac_encoder_deps="libfdk_aac"
2867 libfdk_aac_encoder_select="audio_frame_queue"
2868 libgme_demuxer_deps="libgme"
2869 libgsm_decoder_deps="libgsm"
2870 libgsm_encoder_deps="libgsm"
2871 libgsm_ms_decoder_deps="libgsm"
2872 libgsm_ms_encoder_deps="libgsm"
2873 libilbc_decoder_deps="libilbc"
2874 libilbc_encoder_deps="libilbc"
2875 libkvazaar_encoder_deps="libkvazaar"
2876 libmodplug_demuxer_deps="libmodplug"
2877 libmp3lame_encoder_deps="libmp3lame"
2878 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2879 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2880 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2881 libopencore_amrnb_encoder_select="audio_frame_queue"
2882 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2883 libopenh264_decoder_deps="libopenh264"
2884 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2885 libopenh264_encoder_deps="libopenh264"
2886 libopenjpeg_decoder_deps="libopenjpeg"
2887 libopenjpeg_encoder_deps="libopenjpeg"
2888 libopenmpt_demuxer_deps="libopenmpt"
2889 libopus_decoder_deps="libopus"
2890 libopus_encoder_deps="libopus"
2891 libopus_encoder_select="audio_frame_queue"
2892 librsvg_decoder_deps="librsvg"
2893 libshine_encoder_deps="libshine"
2894 libshine_encoder_select="audio_frame_queue"
2895 libspeex_decoder_deps="libspeex"
2896 libspeex_encoder_deps="libspeex"
2897 libspeex_encoder_select="audio_frame_queue"
2898 libtheora_encoder_deps="libtheora"
2899 libtwolame_encoder_deps="libtwolame"
2900 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2901 libvorbis_decoder_deps="libvorbis"
2902 libvorbis_encoder_deps="libvorbis"
2903 libvorbis_encoder_select="audio_frame_queue"
2904 libvpx_vp8_decoder_deps="libvpx"
2905 libvpx_vp8_encoder_deps="libvpx"
2906 libvpx_vp9_decoder_deps="libvpx"
2907 libvpx_vp9_encoder_deps="libvpx"
2908 libwavpack_encoder_deps="libwavpack"
2909 libwavpack_encoder_select="audio_frame_queue"
2910 libwebp_encoder_deps="libwebp"
2911 libwebp_anim_encoder_deps="libwebp"
2912 libx262_encoder_deps="libx262"
2913 libx264_encoder_deps="libx264"
2914 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2915 libx264rgb_encoder_select="libx264_encoder"
2916 libx265_encoder_deps="libx265"
2917 libxavs_encoder_deps="libxavs"
2918 libxvid_encoder_deps="libxvid"
2919 libzvbi_teletext_decoder_deps="libzvbi"
2920 videotoolbox_deps="VideoToolbox_VideoToolbox_h"
2921 videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework CoreVideo"
2922 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2923 videotoolbox_encoder_suggest="vda_framework vt_bt2020"
2924 vt_bt2020_deps="kCVImageBufferColorPrimaries_ITU_R_2020"
2925
2926 # demuxers / muxers
2927 ac3_demuxer_select="ac3_parser"
2928 aiff_muxer_select="iso_media"
2929 asf_demuxer_select="riffdec"
2930 asf_o_demuxer_select="riffdec"
2931 asf_muxer_select="riffenc"
2932 asf_stream_muxer_select="asf_muxer"
2933 avi_demuxer_select="iso_media riffdec exif"
2934 avi_muxer_select="riffenc"
2935 caf_demuxer_select="iso_media riffdec"
2936 caf_muxer_select="iso_media"
2937 dash_muxer_select="mp4_muxer"
2938 dirac_demuxer_select="dirac_parser"
2939 dts_demuxer_select="dca_parser"
2940 dtshd_demuxer_select="dca_parser"
2941 dv_demuxer_select="dvprofile"
2942 dv_muxer_select="dvprofile"
2943 dxa_demuxer_select="riffdec"
2944 eac3_demuxer_select="ac3_parser"
2945 f4v_muxer_select="mov_muxer"
2946 fifo_muxer_deps="threads"
2947 flac_demuxer_select="flac_parser"
2948 hds_muxer_select="flv_muxer"
2949 hls_muxer_select="mpegts_muxer"
2950 image2_alias_pix_demuxer_select="image2_demuxer"
2951 image2_brender_pix_demuxer_select="image2_demuxer"
2952 ipod_muxer_select="mov_muxer"
2953 ismv_muxer_select="mov_muxer"
2954 matroska_audio_muxer_select="matroska_muxer"
2955 matroska_demuxer_select="iso_media riffdec"
2956 matroska_demuxer_suggest="bzlib lzo zlib"
2957 matroska_muxer_select="iso_media riffenc"
2958 mmf_muxer_select="riffenc"
2959 mov_demuxer_select="iso_media riffdec"
2960 mov_demuxer_suggest="zlib"
2961 mov_muxer_select="iso_media riffenc rtpenc_chain"
2962 mp3_demuxer_select="mpegaudio_parser"
2963 mp3_muxer_select="mpegaudioheader"
2964 mp4_muxer_select="mov_muxer"
2965 mpegts_demuxer_select="iso_media"
2966 mpegts_muxer_select="adts_muxer latm_muxer"
2967 mpegtsraw_demuxer_select="mpegts_demuxer"
2968 mxf_d10_muxer_select="mxf_muxer"
2969 mxf_opatom_muxer_select="mxf_muxer"
2970 nut_muxer_select="riffenc"
2971 nuv_demuxer_select="riffdec"
2972 oga_muxer_select="ogg_muxer"
2973 ogg_demuxer_select="dirac_parse"
2974 ogv_muxer_select="ogg_muxer"
2975 opus_muxer_select="ogg_muxer"
2976 psp_muxer_select="mov_muxer"
2977 rtp_demuxer_select="sdp_demuxer"
2978 rtp_muxer_select="golomb"
2979 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2980 rtsp_demuxer_select="http_protocol rtpdec"
2981 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2982 sap_demuxer_select="sdp_demuxer"
2983 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2984 sdp_demuxer_select="rtpdec"
2985 smoothstreaming_muxer_select="ismv_muxer"
2986 spdif_muxer_select="aac_parser"
2987 spx_muxer_select="ogg_muxer"
2988 swf_demuxer_suggest="zlib"
2989 tak_demuxer_select="tak_parser"
2990 tg2_muxer_select="mov_muxer"
2991 tgp_muxer_select="mov_muxer"
2992 vobsub_demuxer_select="mpegps_demuxer"
2993 w64_demuxer_select="wav_demuxer"
2994 w64_muxer_select="wav_muxer"
2995 wav_demuxer_select="riffdec"
2996 wav_muxer_select="riffenc"
2997 webm_muxer_select="iso_media riffenc"
2998 webm_dash_manifest_demuxer_select="matroska_demuxer"
2999 wtv_demuxer_select="mpegts_demuxer riffdec"
3000 wtv_muxer_select="mpegts_muxer riffenc"
3001 xmv_demuxer_select="riffdec"
3002 xwma_demuxer_select="riffdec"
3003
3004 # indevs / outdevs
3005 alsa_indev_deps="alsa"
3006 alsa_outdev_deps="alsa"
3007 avfoundation_indev_deps="pthreads"
3008 avfoundation_indev_extralibs="-framework Foundation -framework AVFoundation -framework CoreVideo -framework CoreMedia"
3009 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3010 caca_outdev_deps="libcaca"
3011 decklink_indev_deps="decklink threads"
3012 decklink_indev_extralibs="-lstdc++"
3013 decklink_outdev_deps="decklink threads"
3014 decklink_outdev_extralibs="-lstdc++"
3015 dshow_indev_deps="IBaseFilter"
3016 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3017 dv1394_indev_deps="dv1394"
3018 dv1394_indev_select="dv_demuxer"
3019 fbdev_indev_deps="linux_fb_h"
3020 fbdev_outdev_deps="linux_fb_h"
3021 gdigrab_indev_deps="CreateDIBSection"
3022 gdigrab_indev_extralibs="-lgdi32"
3023 gdigrab_indev_select="bmp_decoder"
3024 iec61883_indev_deps="libiec61883"
3025 jack_indev_deps="jack"
3026 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3027 lavfi_indev_deps="avfilter"
3028 libcdio_indev_deps="libcdio"
3029 libdc1394_indev_deps="libdc1394"
3030 libv4l2_indev_deps="libv4l2"
3031 openal_indev_deps="openal"
3032 opengl_outdev_deps="opengl"
3033 oss_indev_deps_any="soundcard_h sys_soundcard_h"
3034 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
3035 pulse_indev_deps="libpulse"
3036 pulse_outdev_deps="libpulse"
3037 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
3038 qtkit_indev_select="qtkit"
3039 sdl2_outdev_deps="sdl2"
3040 sndio_indev_deps="sndio"
3041 sndio_outdev_deps="sndio"
3042 v4l_indev_deps="linux_videodev_h"
3043 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3044 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3045 vfwcap_indev_deps="vfw32 vfwcap_defines"
3046 xcbgrab_indev_deps="libxcb"
3047 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3048 xv_outdev_extralibs="-lXv -lX11 -lXext"
3049
3050 # protocols
3051 async_protocol_deps="threads"
3052 bluray_protocol_deps="libbluray"
3053 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
3054 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3055 ffrtmpcrypt_protocol_select="tcp_protocol"
3056 ffrtmphttp_protocol_deps="!librtmp_protocol"
3057 ffrtmphttp_protocol_select="http_protocol"
3058 ftp_protocol_select="tcp_protocol"
3059 gopher_protocol_select="network"
3060 http_protocol_select="tcp_protocol"
3061 httpproxy_protocol_select="tcp_protocol"
3062 https_protocol_select="tls_protocol"
3063 icecast_protocol_select="http_protocol"
3064 librtmp_protocol_deps="librtmp"
3065 librtmpe_protocol_deps="librtmp"
3066 librtmps_protocol_deps="librtmp"
3067 librtmpt_protocol_deps="librtmp"
3068 librtmpte_protocol_deps="librtmp"
3069 libsmbclient_protocol_deps="libsmbclient gplv3"
3070 libssh_protocol_deps="libssh"
3071 mmsh_protocol_select="http_protocol"
3072 mmst_protocol_select="network"
3073 rtmp_protocol_deps="!librtmp_protocol"
3074 rtmp_protocol_select="tcp_protocol"
3075 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3076 rtmps_protocol_deps="!librtmp_protocol"
3077 rtmps_protocol_select="tls_protocol"
3078 rtmpt_protocol_select="ffrtmphttp_protocol"
3079 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3080 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3081 rtp_protocol_select="udp_protocol"
3082 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3083 sctp_protocol_select="network"
3084 srtp_protocol_select="rtp_protocol srtp"
3085 tcp_protocol_select="network"
3086 tls_gnutls_protocol_deps="gnutls !tls_schannel_protocol !tls_securetransport_protocol"
3087 tls_gnutls_protocol_select="tcp_protocol"
3088 tls_openssl_protocol_deps="openssl !tls_schannel_protocol !tls_securetransport_protocol !tls_gnutls_protocol"
3089 tls_openssl_protocol_select="tcp_protocol"
3090 tls_schannel_protocol_deps="schannel"
3091 tls_schannel_protocol_select="tcp_protocol"
3092 tls_securetransport_protocol_deps="securetransport"
3093 tls_securetransport_protocol_select="tcp_protocol"
3094 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
3095 udp_protocol_select="network"
3096 udplite_protocol_select="network"
3097 unix_protocol_deps="sys_un_h"
3098 unix_protocol_select="network"
3099
3100 # filters
3101 afftfilt_filter_deps="avcodec"
3102 afftfilt_filter_select="fft"
3103 afir_filter_deps="avcodec"
3104 afir_filter_select="fft"
3105 amovie_filter_deps="avcodec avformat"
3106 aresample_filter_deps="swresample"
3107 ass_filter_deps="libass"
3108 atempo_filter_deps="avcodec"
3109 atempo_filter_select="rdft"
3110 azmq_filter_deps="libzmq"
3111 blackframe_filter_deps="gpl"
3112 boxblur_filter_deps="gpl"
3113 bs2b_filter_deps="libbs2b"
3114 colormatrix_filter_deps="gpl"
3115 cover_rect_filter_deps="avcodec avformat gpl"
3116 cropdetect_filter_deps="gpl"
3117 deinterlace_qsv_filter_deps="libmfx"
3118 deinterlace_vaapi_filter_deps="vaapi"
3119 delogo_filter_deps="gpl"
3120 deshake_filter_select="pixelutils"
3121 drawtext_filter_deps="libfreetype"
3122 elbg_filter_deps="avcodec"
3123 eq_filter_deps="gpl"
3124 fftfilt_filter_deps="avcodec"
3125 fftfilt_filter_select="rdft"
3126 find_rect_filter_deps="avcodec avformat gpl"
3127 firequalizer_filter_deps="avcodec"
3128 firequalizer_filter_select="rdft"
3129 flite_filter_deps="libflite"
3130 framerate_filter_select="pixelutils"
3131 frei0r_filter_deps="frei0r dlopen"
3132 frei0r_src_filter_deps="frei0r dlopen"
3133 fspp_filter_deps="gpl"
3134 geq_filter_deps="gpl"
3135 histeq_filter_deps="gpl"
3136 hqdn3d_filter_deps="gpl"
3137 interlace_filter_deps="gpl"
3138 kerndeint_filter_deps="gpl"
3139 ladspa_filter_deps="ladspa dlopen"
3140 mcdeint_filter_deps="avcodec gpl"
3141 movie_filter_deps="avcodec avformat"
3142 mpdecimate_filter_deps="gpl"
3143 mpdecimate_filter_select="pixelutils"
3144 mptestsrc_filter_deps="gpl"
3145 negate_filter_deps="lut_filter"
3146 nnedi_filter_deps="gpl"
3147 ocr_filter_deps="libtesseract"
3148 ocv_filter_deps="libopencv"
3149 owdenoise_filter_deps="gpl"
3150 pan_filter_deps="swresample"
3151 perspective_filter_deps="gpl"
3152 phase_filter_deps="gpl"
3153 pp7_filter_deps="gpl"
3154 pp_filter_deps="gpl postproc"
3155 pullup_filter_deps="gpl"
3156 removelogo_filter_deps="avcodec avformat swscale"
3157 repeatfields_filter_deps="gpl"
3158 resample_filter_deps="avresample"
3159 rubberband_filter_deps="librubberband"
3160 sab_filter_deps="gpl swscale"
3161 scale2ref_filter_deps="swscale"
3162 scale_filter_deps="swscale"
3163 scale_qsv_filter_deps="libmfx"
3164 select_filter_select="pixelutils"
3165 showcqt_filter_deps="avcodec avformat swscale"
3166 showcqt_filter_select="fft"
3167 showfreqs_filter_deps="avcodec"
3168 showfreqs_filter_select="fft"
3169 showspectrum_filter_deps="avcodec"
3170 showspectrum_filter_select="fft"
3171 showspectrumpic_filter_deps="avcodec"
3172 showspectrumpic_filter_select="fft"
3173 signature_filter_deps="gpl avcodec avformat"
3174 smartblur_filter_deps="gpl swscale"
3175 sofalizer_filter_deps="libmysofa avcodec"
3176 sofalizer_filter_select="fft"
3177 spectrumsynth_filter_deps="avcodec"
3178 spectrumsynth_filter_select="fft"
3179 spp_filter_deps="gpl avcodec"
3180 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3181 stereo3d_filter_deps="gpl"
3182 subtitles_filter_deps="avformat avcodec libass"
3183 super2xsai_filter_deps="gpl"
3184 pixfmts_super2xsai_test_deps="super2xsai_filter"
3185 tinterlace_filter_deps="gpl"
3186 tinterlace_merge_test_deps="tinterlace_filter"
3187 tinterlace_pad_test_deps="tinterlace_filter"
3188 uspp_filter_deps="gpl avcodec"
3189 vaguedenoiser_filter_deps="gpl"
3190 vidstabdetect_filter_deps="libvidstab"
3191 vidstabtransform_filter_deps="libvidstab"
3192 libvmaf_filter_deps="libvmaf"
3193 zmq_filter_deps="libzmq"
3194 zoompan_filter_deps="swscale"
3195 zscale_filter_deps="libzimg"
3196 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3197
3198 # examples
3199 avio_dir_cmd_deps="avformat avutil"
3200 avio_reading_deps="avformat avcodec avutil"
3201 decode_audio_example_deps="avcodec avutil"
3202 decode_video_example_deps="avcodec avutil"
3203 demuxing_decoding_example_deps="avcodec avformat avutil"
3204 encode_audio_example_deps="avcodec avutil"
3205 encode_video_example_deps="avcodec avutil"
3206 extract_mvs_example_deps="avcodec avformat avutil"
3207 filter_audio_example_deps="avfilter avutil"
3208 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3209 filtering_video_example_deps="avfilter avcodec avformat avutil"
3210 http_multiclient_example_deps="avformat avutil fork"
3211 metadata_example_deps="avformat avutil"
3212 muxing_example_deps="avcodec avformat avutil swscale"
3213 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3214 remuxing_example_deps="avcodec avformat avutil"
3215 resampling_audio_example_deps="avutil swresample"
3216 scaling_video_example_deps="avutil swscale"
3217 transcode_aac_example_deps="avcodec avformat swresample"
3218 transcoding_example_deps="avfilter avcodec avformat avutil"
3219
3220 # libraries, in linking order
3221 avcodec_deps="avutil"
3222 avcodec_select="null_bsf"
3223 avdevice_deps="avformat avcodec avutil"
3224 avfilter_deps="avutil"
3225 avformat_deps="avcodec avutil"
3226 avresample_deps="avutil"
3227 postproc_deps="avutil gpl"
3228 swresample_deps="avutil"
3229 swscale_deps="avutil"
3230
3231 # programs
3232 ffmpeg_deps="avcodec avfilter avformat swresample"
3233 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3234                null_filter
3235                trim_filter"
3236 ffplay_deps="avcodec avformat swscale swresample sdl2"
3237 ffplay_extralibs='$sdl2_extralibs'
3238 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3239 ffprobe_deps="avcodec avformat"
3240 ffserver_deps="avformat fork sarestart"
3241 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3242
3243 # documentation
3244 podpages_deps="perl"
3245 manpages_deps="perl pod2man"
3246 htmlpages_deps="perl"
3247 htmlpages_deps_any="makeinfo_html texi2html"
3248 txtpages_deps="perl makeinfo"
3249 doc_deps_any="manpages htmlpages podpages txtpages"
3250
3251 # default parameters
3252
3253 logfile="ffbuild/config.log"
3254
3255 # installation paths
3256 prefix_default="/usr/local"
3257 bindir_default='${prefix}/bin'
3258 datadir_default='${prefix}/share/ffmpeg'
3259 docdir_default='${prefix}/share/doc/ffmpeg'
3260 incdir_default='${prefix}/include'
3261 libdir_default='${prefix}/lib'
3262 mandir_default='${prefix}/share/man'
3263
3264 # toolchain
3265 ar_default="ar"
3266 cc_default="gcc"
3267 cxx_default="g++"
3268 host_cc_default="gcc"
3269 doxygen_default="doxygen"
3270 install="install"
3271 ln_s_default="ln -s -f"
3272 nm_default="nm -g"
3273 pkg_config_default=pkg-config
3274 ranlib_default="ranlib"
3275 strip_default="strip"
3276 version_script='--version-script'
3277 x86asmexe_default="nasm"
3278 windres_default="windres"
3279 nvcc_default="nvcc"
3280 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3281
3282 # OS
3283 target_os_default=$(tolower $(uname -s))
3284 host_os=$target_os_default
3285
3286 # machine
3287 if test "$target_os_default" = aix; then
3288     arch_default=$(uname -p)
3289     strip_default="strip -X32_64"
3290 else
3291     arch_default=$(uname -m)
3292 fi
3293 cpu="generic"
3294 intrinsics="none"
3295
3296 # configurable options
3297 enable $PROGRAM_LIST
3298 enable $DOCUMENT_LIST
3299 enable $EXAMPLE_LIST
3300 enable $(filter_out avresample $LIBRARY_LIST)
3301 enable stripping
3302
3303 enable asm
3304 enable debug
3305 enable doc
3306 enable faan faandct faanidct
3307 enable optimizations
3308 enable runtime_cpudetect
3309 enable safe_bitstream_reader
3310 enable static
3311 enable swscale_alpha
3312 enable valgrind_backtrace
3313
3314 sws_max_filter_size_default=256
3315 set_default sws_max_filter_size
3316
3317 # build settings
3318 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3319 LIBPREF="lib"
3320 LIBSUF=".a"
3321 FULLNAME='$(NAME)$(BUILDSUF)'
3322 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3323 SLIBPREF="lib"
3324 SLIBSUF=".so"
3325 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3326 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3327 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3328 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3329 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3330 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3331 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3332
3333 asflags_filter=echo
3334 cflags_filter=echo
3335 ldflags_filter=echo
3336
3337 AS_C='-c'
3338 AS_O='-o $@'
3339 CC_C='-c'
3340 CC_E='-E -o $@'
3341 CC_O='-o $@'
3342 CXX_C='-c'
3343 CXX_O='-o $@'
3344 OBJCC_C='-c'
3345 OBJCC_E='-E -o $@'
3346 OBJCC_O='-o $@'
3347 X86ASM_O='-o $@'
3348 LD_O='-o $@'
3349 LD_LIB='-l%'
3350 LD_PATH='-L'
3351 HOSTCC_C='-c'
3352 HOSTCC_E='-E -o $@'
3353 HOSTCC_O='-o $@'
3354 HOSTLD_O='-o $@'
3355 NVCC_C='-c'
3356 NVCC_O='-o $@'
3357
3358 host_extralibs='-lm'
3359 host_cflags_filter=echo
3360 host_ldflags_filter=echo
3361
3362 target_path='$(CURDIR)'
3363
3364 # since the object filename is not given with the -MM flag, the compiler
3365 # is only able to print the basename, and we must add the path ourselves
3366 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3367 DEPFLAGS='-MM'
3368
3369 mkdir -p ffbuild
3370
3371 # find source path
3372 if test -f configure; then
3373     source_path=.
3374 else
3375     source_path=$(cd $(dirname "$0"); pwd)
3376     case "$source_path" in
3377         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3378     esac
3379     test -e "$source_path/config.h" &&
3380         die "Out of tree builds are impossible with config.h in source dir."
3381 fi
3382
3383 for v in "$@"; do
3384     r=${v#*=}
3385     l=${v%"$r"}
3386     r=$(sh_quote "$r")
3387     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3388 done
3389
3390 find_things(){
3391     thing=$1
3392     pattern=$2
3393     file=$source_path/$3
3394     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3395 }
3396
3397 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3398 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3399 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3400 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3401 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3402 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3403 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3404 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3405 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3406
3407 find_things_extern(){
3408     thing=$1
3409     pattern=$2
3410     file=$source_path/$3
3411     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3412 }
3413
3414 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3415 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3416
3417 ALL_COMPONENTS="
3418     $BSF_LIST
3419     $DECODER_LIST
3420     $DEMUXER_LIST
3421     $ENCODER_LIST
3422     $FILTER_LIST
3423     $HWACCEL_LIST
3424     $INDEV_LIST
3425     $MUXER_LIST
3426     $OUTDEV_LIST
3427     $PARSER_LIST
3428     $PROTOCOL_LIST
3429 "
3430
3431 for n in $COMPONENT_LIST; do
3432     v=$(toupper ${n%s})_LIST
3433     eval enable \$$v
3434     eval ${n}_if_any="\$$v"
3435 done
3436
3437 enable $ARCH_EXT_LIST
3438
3439 die_unknown(){
3440     echo "Unknown option \"$1\"."
3441     echo "See $0 --help for available options."
3442     exit 1
3443 }
3444
3445 print_in_columns() {
3446     cols=$(expr $ncols / 24)
3447     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3448 }
3449
3450 show_list() {
3451     suffix=_$1
3452     shift
3453     echo $* | sed s/$suffix//g | print_in_columns
3454     exit 0
3455 }
3456
3457 rand_list(){
3458     IFS=', '
3459     set -- $*
3460     unset IFS
3461     for thing; do
3462         comp=${thing%:*}
3463         prob=${thing#$comp}
3464         prob=${prob#:}
3465         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3466         echo "prob ${prob:-0.5}"
3467         printf '%s\n' $comp
3468     done
3469 }
3470
3471 do_random(){
3472     action=$1
3473     shift
3474     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3475     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3476 }
3477
3478 for opt do
3479     optval="${opt#*=}"
3480     case "$opt" in
3481         --extra-ldflags=*)
3482             add_ldflags $optval
3483         ;;
3484         --extra-ldexeflags=*)
3485             add_ldexeflags $optval
3486         ;;
3487         --extra-ldlibflags=*)
3488             add_ldlibflags $optval
3489         ;;
3490         --extra-libs=*)
3491             add_extralibs $optval
3492         ;;
3493         --disable-devices)
3494             disable $INDEV_LIST $OUTDEV_LIST
3495         ;;
3496         --enable-debug=*)
3497             debuglevel="$optval"
3498         ;;
3499         --disable-programs)
3500             disable $PROGRAM_LIST
3501         ;;
3502         --disable-everything)
3503             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3504         ;;
3505         --disable-all)
3506             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3507             disable $LIBRARY_LIST $PROGRAM_LIST doc
3508             enable avutil
3509         ;;
3510         --enable-random|--disable-random)
3511             action=${opt%%-random}
3512             do_random ${action#--} $COMPONENT_LIST
3513         ;;
3514         --enable-random=*|--disable-random=*)
3515             action=${opt%%-random=*}
3516             do_random ${action#--} $optval
3517         ;;
3518         --enable-*=*|--disable-*=*)
3519             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3520             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3521             eval list=\$$(toupper $thing)_LIST
3522             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3523             list=$(filter "$name" $list)
3524             [ "$list" = "" ] && warn "Option $opt did not match anything"
3525             $action $list
3526         ;;
3527         --enable-yasm|--disable-yasm)
3528             warn "The ${opt} option is only provided for compatibility and will be\n"\
3529                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3530             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3531         ;;
3532         --yasmexe=*)
3533             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3534                  "removed in the future. Use --x86asmexe instead."
3535             x86asmexe="$optval"
3536         ;;
3537         --enable-?*|--disable-?*)
3538             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3539             if is_in $option $COMPONENT_LIST; then
3540                 test $action = disable && action=unset
3541                 eval $action \$$(toupper ${option%s})_LIST
3542             elif is_in $option $CMDLINE_SELECT; then
3543                 $action $option
3544             else
3545                 die_unknown $opt
3546             fi
3547         ;;
3548         --list-*)
3549             NAME="${opt#--list-}"
3550             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3551             NAME=${NAME%s}
3552             eval show_list $NAME \$$(toupper $NAME)_LIST
3553         ;;
3554         --help|-h) show_help
3555         ;;
3556         --quiet|-q) quiet=yes
3557         ;;
3558         --fatal-warnings) enable fatal_warnings
3559         ;;
3560         --libfuzzer=*)
3561             libfuzzer_path="$optval"
3562         ;;
3563         *)
3564             optname="${opt%%=*}"
3565             optname="${optname#--}"
3566             optname=$(echo "$optname" | sed 's/-/_/g')
3567             if is_in $optname $CMDLINE_SET; then
3568                 eval $optname='$optval'
3569             elif is_in $optname $CMDLINE_APPEND; then
3570                 append $optname "$optval"
3571             else
3572                 die_unknown $opt
3573             fi
3574         ;;
3575     esac
3576 done
3577
3578 for e in $env; do
3579     eval "export $e"
3580 done
3581
3582 # Mark specifically enabled, but normally autodetected libraries as requested.
3583 for lib in $AUTODETECT_LIBS; do
3584     enabled $lib && request $lib
3585 done
3586
3587 # Enable platform codecs by default.
3588 enable_weak audiotoolbox
3589
3590 # Enable hwaccels by default.
3591 enable_weak d3d11va dxva2 vaapi vda vdpau videotoolbox_hwaccel xvmc
3592 enable_weak xlib
3593
3594 enable_weak cuda cuvid nvenc vda_framework videotoolbox videotoolbox_encoder
3595
3596 disabled logging && logfile=/dev/null
3597
3598 die_license_disabled() {
3599     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3600 }
3601
3602 die_license_disabled_gpl() {
3603     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3604 }
3605
3606 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3607 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3608
3609 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3610 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3611
3612 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3613
3614 # Disable all the library-specific components if the library itself
3615 # is disabled, see AVCODEC_LIST and following _LIST variables.
3616
3617 disable_components(){
3618     disabled ${1} && disable $(
3619         eval components="\$$(toupper ${1})_COMPONENTS"
3620         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3621     )
3622 }
3623
3624 map 'disable_components $v' $LIBRARY_LIST
3625
3626 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3627 set >> $logfile
3628
3629 test -n "$valgrind" && toolchain="valgrind-memcheck"
3630
3631 enabled ossfuzz && {
3632     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
3633     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
3634 }
3635
3636 case "$toolchain" in
3637     *-asan)
3638         cc_default="${toolchain%-asan}"
3639         add_cflags  -fsanitize=address
3640         add_ldflags -fsanitize=address
3641     ;;
3642     *-msan)
3643         cc_default="${toolchain%-msan}"
3644         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3645         add_ldflags -fsanitize=memory
3646     ;;
3647     *-tsan)
3648         cc_default="${toolchain%-tsan}"
3649         add_cflags  -fsanitize=thread -fPIE
3650         add_ldflags -fsanitize=thread -pie
3651         case "$toolchain" in
3652             gcc-tsan)
3653                 add_cflags  -fPIC
3654                 add_ldflags -fPIC
3655                 ;;
3656         esac
3657     ;;
3658     *-usan)
3659         cc_default="${toolchain%-usan}"
3660         add_cflags  -fsanitize=undefined
3661         add_ldflags -fsanitize=undefined
3662     ;;
3663     valgrind-*)
3664         target_exec_default="valgrind"
3665         case "$toolchain" in
3666             valgrind-massif)
3667                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3668                 ;;
3669             valgrind-memcheck)
3670                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3671                 ;;
3672         esac
3673     ;;
3674     msvc)
3675         # Check whether the current MSVC version needs the C99 converter.
3676         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3677         # support enough of C99 to build ffmpeg. Default to the new
3678         # behaviour if the regexp was unable to match anything, since this
3679         # successfully parses the version number of existing supported
3680         # versions that require the converter (MSVC 2010 and 2012).
3681         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3682         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3683             cc_default="cl"
3684             cxx_default="cl"
3685         else
3686             cc_default="c99wrap cl"
3687             cxx_default="c99wrap cl"
3688         fi
3689         ld_default="$source_path/compat/windows/mslink"
3690         nm_default="dumpbin -symbols"
3691         ar_default="lib"
3692         case "$arch" in
3693         arm*)
3694             as_default="armasm"
3695             ;;
3696         esac
3697         target_os_default="win32"
3698         # Use a relative path for TMPDIR. This makes sure all the
3699         # ffconf temp files are written with a relative path, avoiding
3700         # issues with msys/win32 path conversion for MSVC parameters
3701         # such as -Fo<file> or -out:<file>.
3702         TMPDIR=.
3703     ;;
3704     icl)
3705         cc_default="icl"
3706         ld_default="xilink"
3707         nm_default="dumpbin -symbols"
3708         ar_default="xilib"
3709         target_os_default="win32"
3710         TMPDIR=.
3711     ;;
3712     gcov)
3713         add_cflags  -fprofile-arcs -ftest-coverage
3714         add_ldflags -fprofile-arcs -ftest-coverage
3715     ;;
3716     llvm-cov)
3717         add_cflags -fprofile-arcs -ftest-coverage
3718         add_ldflags --coverage
3719     ;;
3720     hardened)
3721         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3722         add_cflags   -fno-strict-overflow -fstack-protector-all
3723         add_ldflags  -Wl,-z,relro -Wl,-z,now
3724         add_cflags   -fPIE
3725         add_ldexeflags -fPIE -pie
3726     ;;
3727     ?*)
3728         die "Unknown toolchain $toolchain"
3729     ;;
3730 esac
3731
3732 test -n "$cross_prefix" && enable cross_compile
3733
3734 if enabled cross_compile; then
3735     test -n "$arch" && test -n "$target_os" ||
3736         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3737 fi
3738
3739 ar_default="${cross_prefix}${ar_default}"
3740 cc_default="${cross_prefix}${cc_default}"
3741 cxx_default="${cross_prefix}${cxx_default}"
3742 nm_default="${cross_prefix}${nm_default}"
3743 pkg_config_default="${cross_prefix}${pkg_config_default}"
3744 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3745     ranlib_default="${cross_prefix}${ranlib_default} -D"
3746 else
3747     ranlib_default="${cross_prefix}${ranlib_default}"
3748 fi
3749 strip_default="${cross_prefix}${strip_default}"
3750 windres_default="${cross_prefix}${windres_default}"
3751
3752 sysinclude_default="${sysroot}/usr/include"
3753
3754 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3755     target_exec target_os x86asmexe nvcc
3756 enabled cross_compile || host_cc_default=$cc
3757 set_default host_cc
3758
3759 pkg_config_fail_message=""
3760 if ! $pkg_config --version >/dev/null 2>&1; then
3761     warn "$pkg_config not found, library detection may fail."
3762     pkg_config=false
3763 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3764     pkg_config_fail_message="
3765 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3766 fi
3767
3768 if test $doxygen != $doxygen_default && \
3769   ! $doxygen --version >/dev/null 2>&1; then
3770     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3771 fi
3772
3773 exesuf() {
3774     case $1 in
3775         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3776     esac
3777 }
3778
3779 EXESUF=$(exesuf $target_os)
3780 HOSTEXESUF=$(exesuf $host_os)
3781
3782 # set temporary file name
3783 : ${TMPDIR:=$TEMPDIR}
3784 : ${TMPDIR:=$TMP}
3785 : ${TMPDIR:=/tmp}
3786
3787 if [ -n "$tempprefix" ] ; then
3788     mktemp(){
3789         tmpname="$tempprefix.${HOSTNAME}.${UID}"
3790         echo "$tmpname"
3791         mkdir "$tmpname"
3792     }
3793 elif ! check_cmd mktemp -u XXXXXX; then
3794     # simple replacement for missing mktemp
3795     # NOT SAFE FOR GENERAL USE
3796     mktemp(){
3797         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3798         echo "$tmpname"
3799         mkdir "$tmpname"
3800     }
3801 fi
3802
3803 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
3804     die "Unable to create temporary directory in $TMPDIR."
3805
3806 tmpfile(){
3807     tmp="${FFTMPDIR}/test"$2
3808     (set -C; exec > $tmp) 2> /dev/null ||
3809         die "Unable to create temporary file in $FFTMPDIR."
3810     eval $1=$tmp
3811 }
3812
3813 trap 'rm -rf -- "$FFTMPDIR"' EXIT
3814 trap 'exit 2' INT
3815
3816 tmpfile TMPASM .asm
3817 tmpfile TMPC   .c
3818 tmpfile TMPCPP .cpp
3819 tmpfile TMPE   $EXESUF
3820 tmpfile TMPH   .h
3821 tmpfile TMPM   .m
3822 tmpfile TMPO   .o
3823 tmpfile TMPS   .S
3824 tmpfile TMPSH  .sh
3825 tmpfile TMPV   .ver
3826
3827 unset -f mktemp
3828
3829 chmod +x $TMPE
3830
3831 # make sure we can execute files in $TMPDIR
3832 cat > $TMPSH 2>> $logfile <<EOF
3833 #! /bin/sh
3834 EOF
3835 chmod +x $TMPSH >> $logfile 2>&1
3836 if ! $TMPSH >> $logfile 2>&1; then
3837     cat <<EOF
3838 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3839 variable to another directory and make sure that it is not mounted noexec.
3840 EOF
3841     die "Sanity test failed."
3842 fi
3843
3844 armasm_flags(){
3845     for flag; do
3846         case $flag in
3847             # Filter out MSVC cl.exe options from cflags that shouldn't
3848             # be passed to gas-preprocessor
3849             -M[TD]*)                                            ;;
3850             *)                  echo $flag                      ;;
3851         esac
3852    done
3853 }
3854
3855 ccc_flags(){
3856     for flag; do
3857         case $flag in
3858             -std=c99)           echo -c99                       ;;
3859             -mcpu=*)            echo -arch ${flag#*=}           ;;
3860             -mieee)             echo -ieee                      ;;
3861             -O*|-fast)          echo $flag                      ;;
3862             -fno-math-errno)    echo -assume nomath_errno       ;;
3863             -g)                 echo -g3                        ;;
3864             -Wall)              echo -msg_enable level2         ;;
3865             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3866             -Wl,*)              echo $flag                      ;;
3867             -f*|-W*)                                            ;;
3868             *)                  echo $flag                      ;;
3869         esac
3870    done
3871 }
3872
3873 cparser_flags(){
3874     for flag; do
3875         case $flag in
3876             -Wno-switch)             echo -Wno-switch-enum ;;
3877             -Wno-format-zero-length) ;;
3878             -Wdisabled-optimization) ;;
3879             -Wno-pointer-sign)       echo -Wno-other ;;
3880             *)                       echo $flag ;;
3881         esac
3882     done
3883 }
3884
3885 msvc_common_flags(){
3886     for flag; do
3887         case $flag in
3888             # In addition to specifying certain flags under the compiler
3889             # specific filters, they must be specified here as well or else the
3890             # generic catch all at the bottom will print the original flag.
3891             -Wall)                ;;
3892             -Wextra)              ;;
3893             -std=c99)             ;;
3894             # Common flags
3895             -fomit-frame-pointer) ;;
3896             -g)                   echo -Z7 ;;
3897             -fno-math-errno)      ;;
3898             -fno-common)          ;;
3899             -fno-signed-zeros)    ;;
3900             -fPIC)                ;;
3901             -mthumb)              ;;
3902             -march=*)             ;;
3903             -lz)                  echo zlib.lib ;;
3904             -lx264)               echo libx264.lib ;;
3905             -lstdc++)             ;;
3906             -l*)                  echo ${flag#-l}.lib ;;
3907             -LARGEADDRESSAWARE)   echo $flag ;;
3908             -L*)                  echo -libpath:${flag#-L} ;;
3909             *)                    echo $flag ;;
3910         esac
3911     done
3912 }
3913
3914 msvc_flags(){
3915     msvc_common_flags "$@"
3916     for flag; do
3917         case $flag in
3918             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
3919                                        -wd4554 ;;
3920             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3921                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3922                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3923                                        -wd4307 \
3924                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
3925         esac
3926     done
3927 }
3928
3929 icl_flags(){
3930     msvc_common_flags "$@"
3931     for flag; do
3932         case $flag in
3933             # Despite what Intel's documentation says -Wall, which is supported
3934             # on Windows, does enable remarks so disable them here.
3935             -Wall)                echo $flag -Qdiag-disable:remark ;;
3936             -std=c99)             echo -Qstd=c99 ;;
3937             -flto)                echo -ipo ;;
3938         esac
3939     done
3940 }
3941
3942 icc_flags(){
3943     for flag; do
3944         case $flag in
3945             -flto)                echo -ipo ;;
3946             *)                    echo $flag ;;
3947         esac
3948     done
3949 }
3950
3951 pgi_flags(){
3952     for flag; do
3953         case $flag in
3954             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3955             -fomit-frame-pointer) echo -Mnoframe ;;
3956             -g)                   echo -gopt ;;
3957             *)                    echo $flag ;;
3958         esac
3959     done
3960 }
3961
3962 suncc_flags(){
3963     for flag; do
3964         case $flag in
3965             -march=*|-mcpu=*)
3966                 case "${flag#*=}" in
3967                     native)                   echo -xtarget=native       ;;
3968                     v9|niagara)               echo -xarch=sparc          ;;
3969                     ultrasparc)               echo -xarch=sparcvis       ;;
3970                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3971                     i586|pentium)             echo -xchip=pentium        ;;
3972                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3973                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3974                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3975                     pentium4*)          echo -xtarget=pentium4           ;;
3976                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3977                     *-sse3)             echo -xarch=sse3                 ;;
3978                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3979                     bonnell)                   echo -xarch=ssse3         ;;
3980                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3981                     westmere)                  echo -xtarget=westmere    ;;
3982                     silvermont)                echo -xarch=sse4_2        ;;
3983                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3984                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
3985                                                echo -xarch=avx           ;;
3986                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3987                     btver1)                    echo -xarch=amdsse4a      ;;
3988                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
3989                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3990                     k8|opteron|athlon64|athlon-fx)
3991                                                echo -xarch=sse2a         ;;
3992                     athlon*)                   echo -xarch=pentium_proa  ;;
3993                 esac
3994                 ;;
3995             -std=c99)             echo -xc99              ;;
3996             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3997             -fPIC)                echo -KPIC -xcode=pic32 ;;
3998             -W*,*)                echo $flag              ;;
3999             -f*-*|-W*|-mimpure-text)                      ;;
4000             -shared)              echo -G                 ;;
4001             *)                    echo $flag              ;;
4002         esac
4003     done
4004 }
4005
4006 tms470_flags(){
4007     for flag; do
4008         case $flag in
4009             -march=*|-mcpu=*)
4010                 case "${flag#*=}" in
4011                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
4012                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
4013                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
4014                     armv6*|arm11*)          echo -mv=6   ;;
4015                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
4016                                             echo -mv=5e  ;;
4017                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
4018                 esac
4019                 ;;
4020             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
4021             -mfpu=vfp)      echo --float_support=vfpv2        ;;
4022             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
4023             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
4024             -msoft-float)   echo --float_support=vfplib       ;;
4025             -O[0-3]|-mf=*)  echo $flag                        ;;
4026             -g)             echo -g -mn                       ;;
4027             -pds=*)         echo $flag                        ;;
4028             -D*|-I*)        echo $flag                        ;;
4029             --gcc|--abi=*)  echo $flag                        ;;
4030             -me)            echo $flag                        ;;
4031         esac
4032     done
4033 }
4034
4035 probe_cc(){
4036     pfx=$1
4037     _cc=$2
4038     first=$3
4039
4040     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4041     unset _ld_o _ldflags _ld_lib _ld_path
4042     unset _depflags _DEPCMD _DEPFLAGS
4043     _flags_filter=echo
4044
4045     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4046         true # no-op to avoid reading stdin in following checks
4047     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4048         _type=llvm_gcc
4049         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4050         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4051         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4052         _cflags_speed='-O3'
4053         _cflags_size='-Os'
4054     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4055         _type=gcc
4056         gcc_version=$($_cc --version | head -n1)
4057         gcc_basever=$($_cc -dumpversion)
4058         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4059         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4060         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4061         case $gcc_basever in
4062             2) ;;
4063             2.*) ;;
4064             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4065         esac
4066         if [ "$first" = true ]; then
4067             case $gcc_basever in
4068                 4.2*)
4069                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4070             esac
4071         fi
4072         _cflags_speed='-O3'
4073         _cflags_size='-Os'
4074     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4075         _type=icc
4076         _ident=$($_cc --version | head -n1)
4077         _depflags='-MMD'
4078         _cflags_speed='-O3'
4079         _cflags_size='-Os'
4080         _cflags_noopt='-O1'
4081         _flags_filter=icc_flags
4082     elif $_cc -v 2>&1 | grep -q xlc; then
4083         _type=xlc
4084         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4085         _cflags_speed='-O5'
4086         _cflags_size='-O5 -qcompact'
4087     elif $_cc -V 2>/dev/null | grep -q Compaq; then
4088         _type=ccc
4089         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
4090         _DEPFLAGS='-M'
4091         _cflags_speed='-fast'
4092         _cflags_size='-O1'
4093         _flags_filter=ccc_flags
4094     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4095         test -d "$sysroot" || die "No valid sysroot specified."
4096         _type=armcc
4097         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4098         armcc_conf="$PWD/armcc.conf"
4099         $_cc --arm_linux_configure                 \
4100              --arm_linux_config_file="$armcc_conf" \
4101              --configure_sysroot="$sysroot"        \
4102              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4103              die "Error creating armcc configuration file."
4104         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4105         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4106         as_default="${cross_prefix}gcc"
4107         _depflags='-MMD'
4108         _cflags_speed='-O3'
4109         _cflags_size='-Os'
4110     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
4111         _type=tms470
4112         _ident=$($_cc -version | head -n1 | tr -s ' ')
4113         _flags='--gcc --abi=eabi -me'
4114         _cc_e='-ppl -fe=$@'
4115         _cc_o='-fe=$@'
4116         _depflags='-ppa -ppd=$(@:.o=.d)'
4117         _cflags_speed='-O3 -mf=5'
4118         _cflags_size='-O3 -mf=2'
4119         _flags_filter=tms470_flags
4120     elif $_cc -v 2>&1 | grep -q clang; then
4121         _type=clang
4122         _ident=$($_cc --version 2>/dev/null | head -n1)
4123         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4124         _cflags_speed='-O3'
4125         _cflags_size='-Oz'
4126     elif $_cc -V 2>&1 | grep -q Sun; then
4127         _type=suncc
4128         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4129         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4130         _DEPFLAGS='-xM1 -xc99'
4131         _ldflags='-std=c99'
4132         _cflags_speed='-O5'
4133         _cflags_size='-O5 -xspace'
4134         _flags_filter=suncc_flags
4135     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4136         _type=pathscale
4137         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4138         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4139         _cflags_speed='-O2'
4140         _cflags_size='-Os'
4141         _flags_filter='filter_out -Wdisabled-optimization'
4142     elif $_cc -v 2>&1 | grep -q Open64; then
4143         _type=open64
4144         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4145         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4146         _cflags_speed='-O2'
4147         _cflags_size='-Os'
4148         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4149     elif $_cc -V 2>&1 | grep -q Portland; then
4150         _type=pgi
4151         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
4152         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
4153         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
4154         _cflags_size="-O2 -Munroll=c:1 $opt_common"
4155         _cflags_noopt="-O"
4156         _flags_filter=pgi_flags
4157     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4158         _type=armasm
4159         _ident=$($_cc | head -n1)
4160         # 4509: "This form of conditional instruction is deprecated"
4161         _flags="-nologo -ignore 4509"
4162         _flags_filter=armasm_flags
4163     elif $_cc 2>&1 | grep -q Intel; then
4164         _type=icl
4165         _ident=$($_cc 2>&1 | head -n1)
4166         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4167         # Not only is O3 broken on 13.x+ but it is slower on all previous
4168         # versions (tested) as well.
4169         _cflags_speed="-O2"
4170         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4171         if $_cc 2>&1 | grep -q Linker; then
4172             _ld_o='-out:$@'
4173         else
4174             _ld_o='-Fe$@'
4175         fi
4176         _cc_o='-Fo$@'
4177         _cc_e='-P'
4178         _flags_filter=icl_flags
4179         _ld_lib='lib%.a'
4180         _ld_path='-libpath:'
4181         # -Qdiag-error to make icl error when seeing certain unknown arguments
4182         _flags='-nologo -Qdiag-error:4044,10157'
4183         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4184         # with MSVC which enables it by default.
4185         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4186         disable stripping
4187     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4188         # lld can emulate multiple different linkers; in ms link.exe mode,
4189         # the -? parameter gives the help output which contains an identifyable
4190         # string, while it gives an error in other modes.
4191         _type=lld-link
4192         # The link.exe mode doesn't have a switch for getting the version,
4193         # but we can force it back to gnu mode and get the version from there.
4194         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4195         _ld_o='-out:$@'
4196         _flags_filter=msvc_flags
4197         _ld_lib='lib%.a'
4198         _ld_path='-libpath:'
4199     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4200         _type=msvc
4201         _ident=$($_cc 2>&1 | head -n1)
4202         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4203         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4204         _cflags_speed="-O2"
4205         _cflags_size="-O1"
4206         _cflags_noopt="-O1"
4207         if $_cc -nologo- 2>&1 | grep -q Linker; then
4208             _ld_o='-out:$@'
4209         else
4210             _ld_o='-Fe$@'
4211         fi
4212         _cc_o='-Fo$@'
4213         _cc_e='-P -Fi$@'
4214         _flags_filter=msvc_flags
4215         _ld_lib='lib%.a'
4216         _ld_path='-libpath:'
4217         _flags='-nologo'
4218         disable stripping
4219     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4220         _type=cparser
4221         _ident=$($_cc --version | head -n1)
4222         _depflags='-MMD'
4223         _cflags_speed='-O4'
4224         _cflags_size='-O2'
4225         _flags_filter=cparser_flags
4226     fi
4227
4228     eval ${pfx}_type=\$_type
4229     eval ${pfx}_ident=\$_ident
4230 }
4231
4232 set_ccvars(){
4233     eval ${1}_C=\${_cc_c-\${${1}_C}}
4234     eval ${1}_E=\${_cc_e-\${${1}_E}}
4235     eval ${1}_O=\${_cc_o-\${${1}_O}}
4236
4237     if [ -n "$_depflags" ]; then
4238         eval ${1}_DEPFLAGS=\$_depflags
4239     else
4240         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4241         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4242         eval DEP${1}FLAGS=\$_flags
4243     fi
4244 }
4245
4246 probe_cc cc "$cc" "true"
4247 cflags_filter=$_flags_filter
4248 cflags_speed=$_cflags_speed
4249 cflags_size=$_cflags_size
4250 cflags_noopt=$_cflags_noopt
4251 add_cflags $_flags $_cflags
4252 cc_ldflags=$_ldflags
4253 set_ccvars CC
4254 set_ccvars CXX
4255
4256 probe_cc hostcc "$host_cc"
4257 host_cflags_filter=$_flags_filter
4258 host_cflags_speed=$_cflags_speed
4259 add_host_cflags  $_flags $_cflags
4260 set_ccvars HOSTCC
4261
4262 test -n "$cc_type" && enable $cc_type ||
4263     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4264
4265 : ${as_default:=$cc}
4266 : ${objcc_default:=$cc}
4267 : ${dep_cc_default:=$cc}
4268 : ${ld_default:=$cc}
4269 : ${host_ld_default:=$host_cc}
4270 set_default ar as objcc dep_cc ld ln_s host_ld windres
4271
4272 probe_cc as "$as"
4273 asflags_filter=$_flags_filter
4274 add_asflags $_flags $_cflags
4275 set_ccvars AS
4276
4277 probe_cc objcc "$objcc"
4278 objcflags_filter=$_flags_filter
4279 add_objcflags $_flags $_cflags
4280 set_ccvars OBJC
4281
4282 probe_cc ld "$ld"
4283 ldflags_filter=$_flags_filter
4284 add_ldflags $_flags $_ldflags
4285 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4286 LD_O=${_ld_o-$LD_O}
4287 LD_LIB=${_ld_lib-$LD_LIB}
4288 LD_PATH=${_ld_path-$LD_PATH}
4289
4290 probe_cc hostld "$host_ld"
4291 host_ldflags_filter=$_flags_filter
4292 add_host_ldflags $_flags $_ldflags
4293 HOSTLD_O=${_ld_o-$HOSTLD_O}
4294
4295 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4296     probe_cc depcc "$dep_cc"
4297     CCDEP=${_DEPCMD:-$DEPCMD}
4298     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4299     DEPCCFLAGS=$_flags
4300 fi
4301
4302 if $ar 2>&1 | grep -q Microsoft; then
4303     arflags="-nologo"
4304     ar_o='-out:$@'
4305 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
4306     arflags="rq"
4307     ar_o='$@'
4308 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
4309     arflags='-Xany -r -c'
4310     ar_o='$@'
4311 elif $ar 2>&1 | grep -q "\[D\] "; then
4312     arflags="rcD"
4313     ar_o='$@'
4314 else
4315     arflags="rc"
4316     ar_o='$@'
4317 fi
4318
4319 add_cflags $extra_cflags
4320 add_cxxflags $extra_cxxflags
4321 add_objcflags $extra_objcflags
4322 add_asflags $extra_cflags
4323
4324 if test -n "$sysroot"; then
4325     case "$cc_type" in
4326         gcc|llvm_gcc|clang)
4327             add_cppflags --sysroot="$sysroot"
4328             add_ldflags --sysroot="$sysroot"
4329 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
4330             add_cppflags -isysroot "$sysroot"
4331             add_ldflags -isysroot "$sysroot"
4332         ;;
4333         tms470)
4334             add_cppflags -I"$sysinclude"
4335             add_ldflags  --sysroot="$sysroot"
4336         ;;
4337     esac
4338 fi
4339
4340 if test "$cpu" = host; then
4341     enabled cross_compile &&
4342         die "--cpu=host makes no sense when cross-compiling."
4343
4344     case "$cc_type" in
4345         gcc|llvm_gcc)
4346             check_native(){
4347                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4348                 sed -n "/cc1.*$1=/{
4349                             s/.*$1=\\([^ ]*\\).*/\\1/
4350                             p
4351                             q
4352                         }" $TMPE
4353             }
4354             cpu=$(check_native -march || check_native -mcpu)
4355         ;;
4356         clang)
4357             check_native(){
4358                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4359                 sed -n "/cc1.*-target-cpu /{
4360                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4361                             p
4362                             q
4363                         }" $TMPE
4364             }
4365             cpu=$(check_native -march)
4366         ;;
4367     esac
4368
4369     test "${cpu:-host}" = host &&
4370         die "--cpu=host not supported with compiler $cc"
4371 fi
4372
4373 # Deal with common $arch aliases
4374 case "$arch" in
4375     aarch64|arm64)
4376         arch="aarch64"
4377     ;;
4378     arm*|iPad*|iPhone*)
4379         arch="arm"
4380     ;;
4381     mips*|IP*)
4382         case "$arch" in
4383         *el)
4384             add_cppflags -EL
4385             add_ldflags -EL
4386         ;;
4387         *eb)
4388             add_cppflags -EB
4389             add_ldflags -EB
4390         ;;
4391         esac
4392         arch="mips"
4393     ;;
4394     parisc*|hppa*)
4395         arch="parisc"
4396     ;;
4397     "Power Macintosh"|ppc*|powerpc*)
4398         arch="ppc"
4399     ;;
4400     s390|s390x)
4401         arch="s390"
4402     ;;
4403     sh4|sh)
4404         arch="sh4"
4405     ;;
4406     sun4*|sparc*)
4407         arch="sparc"
4408     ;;
4409     tilegx|tile-gx)
4410         arch="tilegx"
4411     ;;
4412     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4413         arch="x86"
4414     ;;
4415 esac
4416
4417 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4418 enable $arch
4419
4420 # Add processor-specific flags
4421 if enabled aarch64; then
4422
4423     case $cpu in
4424         armv*)
4425             cpuflags="-march=$cpu"
4426         ;;
4427         *)
4428             cpuflags="-mcpu=$cpu"
4429         ;;
4430     esac
4431
4432 elif enabled alpha; then
4433
4434     cpuflags="-mcpu=$cpu"
4435
4436 elif enabled arm; then
4437
4438     check_arm_arch() {
4439         check_cpp_condition stddef.h \
4440             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4441             $cpuflags
4442     }
4443
4444     probe_arm_arch() {
4445         if   check_arm_arch 4;        then echo armv4
4446         elif check_arm_arch 4T;       then echo armv4t
4447         elif check_arm_arch 5;        then echo armv5
4448         elif check_arm_arch 5E;       then echo armv5e
4449         elif check_arm_arch 5T;       then echo armv5t
4450         elif check_arm_arch 5TE;      then echo armv5te
4451         elif check_arm_arch 5TEJ;     then echo armv5te
4452         elif check_arm_arch 6;        then echo armv6
4453         elif check_arm_arch 6J;       then echo armv6j
4454         elif check_arm_arch 6K;       then echo armv6k
4455         elif check_arm_arch 6Z;       then echo armv6z
4456         elif check_arm_arch 6ZK;      then echo armv6zk
4457         elif check_arm_arch 6T2;      then echo armv6t2
4458         elif check_arm_arch 7;        then echo armv7
4459         elif check_arm_arch 7A  7_A;  then echo armv7-a
4460         elif check_arm_arch 7S;       then echo armv7-a
4461         elif check_arm_arch 7R  7_R;  then echo armv7-r
4462         elif check_arm_arch 7M  7_M;  then echo armv7-m
4463         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4464         elif check_arm_arch 8A  8_A;  then echo armv8-a
4465         fi
4466     }
4467
4468     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4469
4470     case $cpu in
4471         armv*)
4472             cpuflags="-march=$cpu"
4473             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4474         ;;
4475         *)
4476             cpuflags="-mcpu=$cpu"
4477             case $cpu in
4478                 cortex-a*)                               subarch=armv7a  ;;
4479                 cortex-r*)                               subarch=armv7r  ;;
4480                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4481                 arm11*)                                  subarch=armv6   ;;
4482                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4483                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4484                 *)                             subarch=$(probe_arm_arch) ;;
4485             esac
4486         ;;
4487     esac
4488
4489     case "$subarch" in
4490         armv5t*)    enable fast_clz                ;;
4491         armv[6-8]*)
4492             enable fast_clz
4493             disabled fast_unaligned || enable fast_unaligned
4494             ;;
4495     esac
4496
4497 elif enabled avr32; then
4498
4499     case $cpu in
4500         ap7[02]0[0-2])
4501             subarch="avr32_ap"
4502             cpuflags="-mpart=$cpu"
4503         ;;
4504         ap)
4505             subarch="avr32_ap"
4506             cpuflags="-march=$cpu"
4507         ;;
4508         uc3[ab]*)
4509             subarch="avr32_uc"
4510             cpuflags="-mcpu=$cpu"
4511         ;;
4512         uc)
4513             subarch="avr32_uc"
4514             cpuflags="-march=$cpu"
4515         ;;
4516     esac
4517
4518 elif enabled bfin; then
4519
4520     cpuflags="-mcpu=$cpu"
4521
4522 elif enabled mips; then
4523
4524     cpuflags="-march=$cpu"
4525
4526     if [ "$cpu" != "generic" ]; then
4527         disable mips32r2
4528         disable mips32r5
4529         disable mips64r2
4530         disable mips32r6
4531         disable mips64r6
4532         disable loongson2
4533         disable loongson3
4534
4535         case $cpu in
4536             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4537                 enable mips32r2
4538                 disable msa
4539             ;;
4540             p5600|i6400|p6600)
4541                 disable mipsdsp
4542                 disable mipsdspr2
4543             ;;
4544             loongson*)
4545                 enable loongson2
4546                 enable loongson3
4547                 enable local_aligned_8 local_aligned_16 local_aligned_32
4548                 enable simd_align_16
4549                 enable fast_64bit
4550                 enable fast_clz
4551                 enable fast_cmov
4552                 enable fast_unaligned
4553                 disable aligned_stack
4554                 disable mipsfpu
4555                 disable mipsdsp
4556                 disable mipsdspr2
4557                 case $cpu in
4558                     loongson3*)
4559                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4560                     ;;
4561                     loongson2e)
4562                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4563                     ;;
4564                     loongson2f)
4565                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4566                     ;;
4567                 esac
4568             ;;
4569             *)
4570                 # Unknown CPU. Disable everything.
4571                 warn "unknown CPU. Disabling all MIPS optimizations."
4572                 disable mipsfpu
4573                 disable mipsdsp
4574                 disable mipsdspr2
4575                 disable msa
4576                 disable mmi
4577             ;;
4578         esac
4579
4580         case $cpu in
4581             24kc)
4582                 disable mipsfpu
4583                 disable mipsdsp
4584                 disable mipsdspr2
4585             ;;
4586             24kf*)
4587                 disable mipsdsp
4588                 disable mipsdspr2
4589             ;;
4590             24kec|34kc|1004kc)
4591                 disable mipsfpu
4592                 disable mipsdspr2
4593             ;;
4594             24kef*|34kf*|1004kf*)
4595                 disable mipsdspr2
4596             ;;
4597             74kc)
4598                 disable mipsfpu
4599             ;;
4600             p5600)
4601                 enable mips32r5
4602                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4603             ;;
4604             i6400)
4605                 enable mips64r6
4606                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4607             ;;
4608             p6600)
4609                 enable mips64r6
4610                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4611             ;;
4612         esac
4613     else
4614         # We do not disable anything. Is up to the user to disable the unwanted features.
4615         warn 'generic cpu selected'
4616     fi
4617
4618 elif enabled ppc; then
4619
4620     disable ldbrx
4621
4622     case $(tolower $cpu) in
4623         601|ppc601|powerpc601)
4624             cpuflags="-mcpu=601"
4625             disable altivec
4626         ;;
4627         603*|ppc603*|powerpc603*)
4628             cpuflags="-mcpu=603"
4629             disable altivec
4630         ;;
4631         604*|ppc604*|powerpc604*)
4632             cpuflags="-mcpu=604"
4633             disable altivec
4634         ;;
4635         g3|75*|ppc75*|powerpc75*)
4636             cpuflags="-mcpu=750"
4637             disable altivec
4638         ;;
4639         g4|745*|ppc745*|powerpc745*)
4640             cpuflags="-mcpu=7450"
4641             disable vsx
4642         ;;
4643         74*|ppc74*|powerpc74*)
4644             cpuflags="-mcpu=7400"
4645             disable vsx
4646         ;;
4647         g5|970|ppc970|powerpc970)
4648             cpuflags="-mcpu=970"
4649             disable vsx
4650         ;;
4651         power[3-6]*)
4652             cpuflags="-mcpu=$cpu"
4653             disable vsx
4654         ;;
4655         power[7-8]*)
4656             cpuflags="-mcpu=$cpu"
4657         ;;
4658         cell)
4659             cpuflags="-mcpu=cell"
4660             enable ldbrx
4661             disable vsx
4662         ;;
4663         e500mc)
4664             cpuflags="-mcpu=e500mc"
4665             disable altivec
4666         ;;
4667         e500v2)
4668             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4669             disable altivec
4670             disable dcbzl
4671         ;;
4672         e500)
4673             cpuflags="-mcpu=8540 -mhard-float"
4674             disable altivec
4675             disable dcbzl
4676         ;;
4677     esac
4678
4679 elif enabled sparc; then
4680
4681     case $cpu in
4682         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4683             cpuflags="-mcpu=$cpu"
4684         ;;
4685         ultrasparc*|niagara[234])
4686             cpuflags="-mcpu=$cpu"
4687         ;;
4688     esac
4689
4690 elif enabled x86; then
4691
4692     case $cpu in
4693         i[345]86|pentium)
4694             cpuflags="-march=$cpu"
4695             disable i686
4696             disable mmx
4697         ;;
4698         # targets that do NOT support nopl and conditional mov (cmov)
4699         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4700             cpuflags="-march=$cpu"
4701             disable i686
4702         ;;
4703         # targets that do support nopl and conditional mov (cmov)
4704         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4705         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4706         |amdfam10|barcelona|b[dt]ver*|znver*)
4707             cpuflags="-march=$cpu"
4708             enable i686
4709             enable fast_cmov
4710         ;;
4711         # targets that do support conditional mov but on which it's slow
4712         pentium4|pentium4m|prescott|nocona)
4713             cpuflags="-march=$cpu"
4714             enable i686
4715             disable fast_cmov
4716         ;;
4717     esac
4718
4719 fi
4720
4721 if [ "$cpu" != generic ]; then
4722     add_cflags  $cpuflags
4723     add_asflags $cpuflags
4724     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4725 fi
4726
4727 # compiler sanity check
4728 check_exec <<EOF
4729 int main(void){ return 0; }
4730 EOF
4731 if test "$?" != 0; then
4732     echo "$cc is unable to create an executable file."
4733     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4734         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4735         echo "Only do this if you know what cross compiling means."
4736     fi
4737     die "C compiler test failed."
4738 fi
4739
4740 add_cppflags -D_ISOC99_SOURCE
4741 add_cxxflags -D__STDC_CONSTANT_MACROS
4742 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4743
4744 # some compilers silently accept -std=c11, so we also need to check that the
4745 # version macro is defined properly
4746 if test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L"; then
4747     add_cflags -std=c11
4748 else
4749     check_cflags -std=c99
4750 fi
4751
4752 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4753 #include <stdlib.h>
4754 EOF
4755 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4756 #include <stdlib.h>
4757 EOF
4758
4759 add_host_cppflags -D_ISOC99_SOURCE
4760 check_host_cflags -std=c99
4761 check_host_cflags -Wall
4762 check_host_cflags $host_cflags_speed
4763
4764 check_64bit(){
4765     arch32=$1
4766     arch64=$2
4767     expr=$3
4768     check_code cc "" "int test[2*($expr) - 1]" &&
4769         subarch=$arch64 || subarch=$arch32
4770 }
4771
4772 case "$arch" in
4773     aarch64|alpha|ia64)
4774         spic=$shared
4775     ;;
4776     mips)
4777         check_64bit mips mips64 '_MIPS_SIM > 1'
4778         spic=$shared
4779     ;;
4780     parisc)
4781         check_64bit parisc parisc64 'sizeof(void *) > 4'
4782         spic=$shared
4783     ;;
4784     ppc)
4785         check_64bit ppc ppc64 'sizeof(void *) > 4'
4786         spic=$shared
4787     ;;
4788     s390)
4789         check_64bit s390 s390x 'sizeof(void *) > 4'
4790         spic=$shared
4791     ;;
4792     sparc)
4793         check_64bit sparc sparc64 'sizeof(void *) > 4'
4794         spic=$shared
4795     ;;
4796     x86)
4797         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4798         # Treat x32 as x64 for now. Note it also needs spic=$shared
4799         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4800             subarch=x86_64
4801         if test "$subarch" = "x86_64"; then
4802             spic=$shared
4803         fi
4804     ;;
4805     ppc)
4806         check_cc <<EOF && subarch="ppc64"
4807         int test[(int)sizeof(char*) - 7];
4808 EOF
4809     ;;
4810 esac
4811
4812 enable $subarch
4813 enabled spic && enable_weak pic
4814
4815 enabled x86_64 && objformat=elf64 || objformat="elf32"
4816
4817 # OS specific
4818 case $target_os in
4819     aix)
4820         SHFLAGS=-shared
4821         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4822         enabled shared && add_ldflags -Wl,-brtl
4823         ;;
4824     android)
4825         disable symver
4826         enable section_data_rel_ro
4827         SLIB_INSTALL_NAME='$(SLIBNAME)'
4828         SLIB_INSTALL_LINKS=
4829         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4830         ;;
4831     haiku)
4832         prefix_default="/boot/common"
4833         network_extralibs="-lnetwork"
4834         host_extralibs=
4835         ;;
4836     sunos)
4837         SHFLAGS='-shared -Wl,-h,$$(@F)'
4838         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4839         network_extralibs="-lsocket -lnsl"
4840         add_cppflags -D__EXTENSIONS__
4841         # When using suncc to build, the Solaris linker will mark
4842         # an executable with each instruction set encountered by
4843         # the Solaris assembler.  As our libraries contain their own
4844         # guards for processor-specific code, instead suppress
4845         # generation of the HWCAPS ELF section on Solaris x86 only.
4846         enabled_all suncc x86 &&
4847             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4848             add_ldflags -Wl,-M,mapfile
4849         nm_default='nm -P -g'
4850         version_script='-M'
4851         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
4852         ;;
4853     netbsd)
4854         disable symver
4855         oss_indev_extralibs="-lossaudio"
4856         oss_outdev_extralibs="-lossaudio"
4857         enabled gcc || check_ldflags -Wl,-zmuldefs
4858         ;;
4859     openbsd|bitrig)
4860         disable symver
4861         SHFLAGS='-shared'
4862         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4863         SLIB_INSTALL_LINKS=
4864         oss_indev_extralibs="-lossaudio"
4865         oss_outdev_extralibs="-lossaudio"
4866         ;;
4867     dragonfly)
4868         disable symver
4869         ;;
4870     freebsd)
4871         ;;
4872     bsd/os)
4873         add_extralibs -lpoll -lgnugetopt
4874         strip="strip -d"
4875         ;;
4876     darwin)
4877         enabled ppc && add_asflags -force_cpusubtype_ALL
4878         install_name_dir_default='$(SHLIBDIR)'
4879         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4880         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4881         strip="${strip} -x"
4882         add_ldflags -Wl,-dynamic,-search_paths_first
4883         SLIBSUF=".dylib"
4884         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4885         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4886         objformat="macho"
4887         enabled x86_64 && objformat="macho64" || objformat="macho32"
4888         enabled_any pic shared x86_64 ||
4889             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4890         check_header dispatch/dispatch.h &&
4891             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
4892         version_script='-exported_symbols_list'
4893         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
4894         ;;
4895     msys*)
4896         die "Native MSYS builds are discouraged, please use the MINGW environment."
4897         ;;
4898     mingw32*|mingw64*)
4899         if test $target_os = "mingw32ce"; then
4900             disable network
4901         else
4902             target_os=mingw32
4903         fi
4904         LIBTARGET=i386
4905         if enabled x86_64; then
4906             LIBTARGET="i386:x86-64"
4907         elif enabled arm; then
4908             LIBTARGET=arm-wince
4909         fi
4910         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4911         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4912         shlibdir_default="$bindir_default"
4913         SLIBPREF=""
4914         SLIBSUF=".dll"
4915         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4916         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4917         dlltool="${cross_prefix}dlltool"
4918         if check_cmd lib.exe -list; then
4919             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4920             if enabled x86_64; then
4921                 LIBTARGET=x64
4922             fi
4923         elif check_cmd $dlltool --version; then
4924             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4925         fi
4926         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4927         SLIB_INSTALL_LINKS=
4928         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4929         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4930         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--disable-auto-image-base'
4931         enabled x86_64 && objformat="win64" || objformat="win32"
4932         ranlib=:
4933         enable dos_paths
4934         check_ldflags -Wl,--nxcompat,--dynamicbase
4935         # Lets work around some stupidity in binutils.
4936         # ld will strip relocations from executables even though we need them
4937         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4938         # however ld then forgets what the entry point should be (oops) so we
4939         # have to manually (re)set it.
4940         if enabled x86_32; then
4941             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
4942         elif enabled x86_64; then
4943             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
4944             check_ldflags -Wl,--high-entropy-va # binutils 2.25
4945             # Set image base >4GB for extra entropy with HEASLR
4946             add_ldexeflags -Wl,--image-base,0x140000000
4947             append SHFLAGS -Wl,--image-base,0x180000000
4948         fi
4949         ;;
4950     win32|win64)
4951         disable symver
4952         if enabled shared; then
4953             # Link to the import library instead of the normal static library
4954             # for shared libs.
4955             LD_LIB='%.lib'
4956             # Cannot build both shared and static libs with MSVC or icl.
4957             disable static
4958         fi
4959         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4960         shlibdir_default="$bindir_default"
4961         SLIBPREF=""
4962         SLIBSUF=".dll"
4963         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4964         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4965         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4966         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4967         SLIB_INSTALL_LINKS=
4968         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4969         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4970         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4971         enabled x86_64 && objformat="win64" || objformat="win32"
4972         ranlib=:
4973         enable dos_paths
4974         ;;
4975     cygwin*)
4976         target_os=cygwin
4977         shlibdir_default="$bindir_default"
4978         SLIBPREF="cyg"
4979         SLIBSUF=".dll"
4980         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4981         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4982         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4983         SLIB_INSTALL_LINKS=
4984         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4985         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4986         enabled x86_64 && objformat="win64" || objformat="win32"
4987         enable dos_paths
4988         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4989         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4990         ;;
4991     *-dos|freedos|opendos)
4992         network_extralibs="-lsocket"
4993         objformat="coff"
4994         enable dos_paths
4995         add_cppflags -U__STRICT_ANSI__
4996         ;;
4997     linux)
4998         enable dv1394
4999         enable section_data_rel_ro
5000         ;;
5001     irix*)
5002         target_os=irix
5003         ranlib="echo ignoring ranlib"
5004         ;;
5005     os/2*)
5006         strip="lxlite -CS"
5007         objformat="aout"
5008         add_cppflags -D_GNU_SOURCE
5009         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5010         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5011         LIBSUF="_s.a"
5012         SLIBPREF=""
5013         SLIBSUF=".dll"
5014         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5015         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5016         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5017             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5018             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5019             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5020             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5021         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5022             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5023         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5024         SLIB_INSTALL_LINKS=
5025         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5026         enable dos_paths
5027         enable_weak os2threads
5028         ;;
5029     gnu/kfreebsd)
5030         add_cppflags -D_BSD_SOURCE
5031         ;;
5032     gnu)
5033         ;;
5034     qnx)
5035         add_cppflags -D_QNX_SOURCE
5036         network_extralibs="-lsocket"
5037         ;;
5038     symbian)
5039         SLIBSUF=".dll"
5040         enable dos_paths
5041         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5042         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5043         add_ldflags -Wl,--target1-abs,--no-undefined \
5044                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5045                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5046         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5047                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5048                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5049         ;;
5050     osf1)
5051         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
5052         ;;
5053     minix)
5054         ;;
5055     none)
5056         ;;
5057     *)
5058         die "Unknown OS '$target_os'."
5059         ;;
5060 esac
5061
5062 # test if creating links works
5063 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5064 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5065 mkdir "$link_dest"
5066 $ln_s "$link_dest" "$link_name"
5067 touch "$link_dest/test_file"
5068 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5069     # create link to source path
5070     [ -e src ] && rm src
5071     $ln_s "$source_path" src
5072     source_link=src
5073 else
5074     # creating directory links doesn't work
5075     # fall back to using the full source path
5076     source_link="$source_path"
5077 fi
5078 # cleanup
5079 rm -r "$link_dest"
5080 rm -r "$link_name"
5081
5082 # determine libc flavour
5083
5084 probe_libc(){
5085     pfx=$1
5086     pfx_no_=${pfx%_}
5087     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5088     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5089         eval ${pfx}libc_type=uclibc
5090         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5091     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5092         eval ${pfx}libc_type=glibc
5093         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5094     # MinGW headers can be installed on Cygwin, so check for newlib first.
5095     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5096         eval ${pfx}libc_type=newlib
5097         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5098     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5099     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5100         eval ${pfx}libc_type=mingw64
5101         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5102             add_compat msvcrt/snprintf.o
5103             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5104         fi
5105         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5106         eval test \$${pfx_no_}cc_type = "gcc" &&
5107             add_${pfx}cppflags -D__printf__=__gnu_printf__
5108     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5109          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5110         eval ${pfx}libc_type=mingw32
5111         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5112             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5113             die "ERROR: MinGW32 runtime version must be >= 3.15."
5114         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5115         check_${pfx}cpp_condition _mingw.h "defined(_WIN32_WINNT) && _WIN32_WINNT >= 0x0502" ||
5116             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
5117         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5118             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5119         eval test \$${pfx_no_}cc_type = "gcc" &&
5120             add_${pfx}cppflags -D__printf__=__gnu_printf__
5121     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5122         eval ${pfx}libc_type=msvcrt
5123         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5124             if [ "$pfx" = host_ ]; then
5125                 add_host_cppflags -Dsnprintf=_snprintf
5126             else
5127                 add_compat strtod.o strtod=avpriv_strtod
5128                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5129                                              _snprintf=avpriv_snprintf  \
5130                                              vsnprintf=avpriv_vsnprintf
5131             fi
5132         fi
5133         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5134         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5135         # 0x601 by default unless something else is set by the user.
5136         # This can easily lead to us detecting functions only present
5137         # in such new versions and producing binaries requiring windows 7.0.
5138         # Therefore explicitly set the default to XP unless the user has
5139         # set something else on the command line.
5140         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5141         # family. For these cases, configure is free to use any functions
5142         # found in the SDK headers by default. (Alternatively, we could force
5143         # _WIN32_WINNT to 0x0602 in that case.)
5144         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5145             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
5146 #ifdef WINAPI_FAMILY
5147 #include <winapifamily.h>
5148 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5149 #error not desktop
5150 #endif
5151 #endif
5152 EOF
5153         if [ "$pfx" = "" ]; then
5154             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5155             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5156         fi
5157     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5158         eval ${pfx}libc_type=klibc
5159     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5160         eval ${pfx}libc_type=bionic
5161     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5162         eval ${pfx}libc_type=solaris
5163         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5164     fi
5165     check_${pfx}cc <<EOF
5166 #include <time.h>
5167 void *v = localtime_r;
5168 EOF
5169 test "$?" != 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
5170 #include <time.h>
5171 void *v = localtime_r;
5172 EOF
5173
5174 }
5175
5176 probe_libc
5177 test -n "$libc_type" && enable libc_$libc_type
5178 probe_libc host_
5179 test -n "$host_libc_type" && enable host_libc_$host_libc_type
5180
5181 case $libc_type in
5182     bionic)
5183         add_compat strtod.o strtod=avpriv_strtod
5184         ;;
5185 esac
5186
5187 # hacks for compiler/libc/os combinations
5188
5189 if enabled_all tms470 libc_glibc; then
5190     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
5191     add_cppflags -D__USER_LABEL_PREFIX__=
5192     add_cppflags -D__builtin_memset=memset
5193     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
5194     add_cflags   -pds=48    # incompatible redefinition of macro
5195 fi
5196
5197 if enabled_all ccc libc_glibc; then
5198     add_ldflags -Wl,-z,now  # calls to libots crash without this
5199 fi
5200
5201 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5202     add_cppflags '-I\$(SRC_PATH)/compat/float'
5203
5204 esc(){
5205     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
5206 }
5207
5208 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
5209
5210 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5211
5212 set_default libdir
5213 : ${shlibdir_default:="$libdir"}
5214 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5215
5216 set_default $PATHS_LIST
5217 set_default nm
5218
5219 # we need to build at least one lib type
5220 if ! enabled_any static shared; then
5221     cat <<EOF
5222 At least one library type must be built.
5223 Specify --enable-static to build the static libraries or --enable-shared to
5224 build the shared libraries as well. To only build the shared libraries specify
5225 --disable-static in addition to --enable-shared.
5226 EOF
5227     exit 1
5228 fi
5229
5230 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5231
5232 enable_weak_pic() {
5233     disabled pic && return
5234     enable pic
5235     add_cppflags -DPIC
5236     case "$target_os" in
5237     mingw*|cygwin*)
5238         ;;
5239     *)
5240         add_cflags -fPIC
5241         ;;
5242     esac
5243     add_asflags  -fPIC
5244 }
5245
5246 enabled pic && enable_weak_pic
5247
5248 check_cc <<EOF || die "Symbol mangling check failed."
5249 int ff_extern;
5250 EOF
5251 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5252 extern_prefix=${sym%%ff_extern*}
5253
5254 check_cc <<EOF && enable_weak inline_asm
5255 void foo(void) { __asm__ volatile ("" ::); }
5256 EOF
5257
5258 _restrict=
5259 for restrict_keyword in restrict __restrict__ __restrict; do
5260     check_cc <<EOF && _restrict=$restrict_keyword && break
5261 void foo(char * $restrict_keyword p);
5262 EOF
5263 done
5264
5265 check_cc <<EOF && enable pragma_deprecated
5266 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
5267 EOF
5268
5269 check_cc <<EOF && enable attribute_packed
5270 struct { int x; } __attribute__((packed)) x;
5271 EOF
5272
5273 check_cc <<EOF && enable attribute_may_alias
5274 union { int x; } __attribute__((may_alias)) x;
5275 EOF
5276
5277 check_cc <<EOF || die "endian test failed"
5278 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5279 EOF
5280 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5281
5282 if ! enabled ppc64 || enabled bigendian; then
5283     disable vsx
5284 fi
5285
5286 check_gas() {
5287     log "check_gas using '$as' as AS"
5288     # :vararg is used on aarch64, arm and ppc altivec
5289     check_as <<EOF || return 1
5290 .macro m n, y:vararg=0
5291 \n: .int \y
5292 .endm
5293 m x
5294 EOF
5295     # .altmacro is only used in arm asm
5296     ! enabled arm || check_as <<EOF || return 1
5297 .altmacro
5298 EOF
5299     enable gnu_as
5300     return 0
5301 }
5302
5303 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5304     nogas=:
5305     enabled_any arm aarch64 && nogas=die
5306     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5307     as_noop=-v
5308
5309     case $as_type in
5310         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5311         gcc)  gaspp_as_type=gas ;;
5312         *)    gaspp_as_type=$as_type ;;
5313     esac
5314
5315     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5316
5317     test "${as#*gas-preprocessor.pl}" != "$as" ||
5318     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5319         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5320
5321     if ! check_gas ; then
5322         as=${gas:=$as}
5323         check_gas || \
5324             $nogas "GNU assembler not found, install/update gas-preprocessor"
5325     fi
5326
5327     check_as <<EOF && enable as_func
5328 .func test
5329 .endfunc
5330 EOF
5331 fi
5332
5333 check_inline_asm inline_asm_labels '"1:\n"'
5334
5335 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5336
5337 if enabled aarch64; then
5338     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5339     # internal assembler in clang 3.3 does not support this instruction
5340     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5341     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5342
5343     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5344
5345 elif enabled alpha; then
5346
5347     check_cflags -mieee
5348
5349 elif enabled arm; then
5350
5351     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
5352
5353     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
5354 float func(float a, float b){ return a+b; }
5355 EOF
5356
5357     enabled thumb && check_cflags -mthumb || check_cflags -marm
5358
5359     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
5360         enable vfp_args
5361     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5362         enable vfp_args
5363     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5364         case "${cross_prefix:-$cc}" in
5365             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
5366             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
5367 __asm__ (".eabi_attribute 28, 1");
5368 int main(void) { return 0; }
5369 EOF
5370         esac
5371         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5372     fi
5373
5374     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5375     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5376     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5377     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5378     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5379     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5380     enabled setend  && check_insn setend  'setend be'
5381
5382     [ $target_os = linux ] || [ $target_os = android ] ||
5383         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5384             $ARCH_EXT_LIST_ARM
5385
5386     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5387
5388     check_as <<EOF && enable as_dn_directive
5389 ra .dn d0.i16
5390 .unreq ra
5391 EOF
5392     check_as <<EOF && enable as_fpu_directive
5393 .fpu neon
5394 EOF
5395
5396     # llvm's integrated assembler supports .object_arch from llvm 3.5
5397     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5398         check_as <<EOF && enable as_object_arch
5399 .object_arch armv4
5400 EOF
5401
5402     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5403
5404 elif enabled mips; then
5405
5406     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5407     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5408     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5409
5410     # Enable minimum ISA based on selected options
5411     if enabled mips64; then
5412         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5413         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5414         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5415     else
5416         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5417         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5418         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5419         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5420     fi
5421
5422     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5423     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5424     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
5425     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5426     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5427
5428     if enabled bigendian && enabled msa; then
5429         disable msa
5430     fi
5431
5432 elif enabled parisc; then
5433
5434     if enabled gcc; then
5435         case $($cc -dumpversion) in
5436             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5437         esac
5438     fi
5439
5440 elif enabled ppc; then
5441
5442     enable local_aligned_8 local_aligned_16 local_aligned_32
5443
5444     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5445     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5446     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5447     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5448
5449     # AltiVec flags: The FSF version of GCC differs from the Apple version
5450     if enabled altivec; then
5451         check_cflags -maltivec -mabi=altivec &&
5452         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
5453         check_cflags -faltivec
5454
5455         # check if our compiler supports Motorola AltiVec C API
5456         check_cc <<EOF || disable altivec
5457 $inc_altivec_h
5458 int main(void) {
5459     vector signed int v1 = (vector signed int) { 0 };
5460     vector signed int v2 = (vector signed int) { 1 };
5461     v1 = vec_add(v1, v2);
5462     return 0;
5463 }
5464 EOF
5465
5466         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5467     fi
5468
5469     if enabled vsx; then
5470         check_cflags -mvsx &&
5471         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
5472     fi
5473
5474     if enabled power8; then
5475         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
5476     fi
5477
5478 elif enabled x86; then
5479
5480     check_builtin rdtsc    intrin.h   "__rdtsc()"
5481     check_builtin mm_empty mmintrin.h "_mm_empty()"
5482
5483     enable local_aligned_8 local_aligned_16 local_aligned_32
5484
5485     # check whether EBP is available on x86
5486     # As 'i' is stored on the stack, this program will crash
5487     # if the base pointer is used to access it because the
5488     # base pointer is cleared in the inline assembly code.
5489     check_exec_crash <<EOF && enable ebp_available
5490 volatile int i=0;
5491 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5492 return i;
5493 EOF
5494
5495     # check whether EBX is available on x86
5496     check_inline_asm ebx_available '""::"b"(0)' &&
5497         check_inline_asm ebx_available '"":::"%ebx"'
5498
5499     # check whether xmm clobbers are supported
5500     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5501
5502     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5503         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5504
5505     # check whether binutils is new enough to compile SSSE3/MMXEXT
5506     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5507     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5508
5509     probe_x86asm(){
5510         x86asmexe_probe=$1
5511         if check_cmd $x86asmexe_probe -v; then
5512             x86asmexe=$x86asmexe_probe
5513             x86asm_type=nasm
5514             x86asm_debug="-g -F dwarf"
5515         elif check_cmd $x86asmexe_probe --version; then
5516             x86asmexe=$x86asmexe_probe
5517             x86asm_type=yasm
5518             x86asm_debug="-g dwarf2"
5519         fi
5520         check_x86asm "movbe ecx, [5]" && enable x86asm
5521     }
5522
5523     if ! disabled_any asm mmx x86asm; then
5524         disable x86asm
5525         for program in $x86asmexe nasm yasm; do
5526             probe_x86asm $program && break
5527         done
5528         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
5529         test $x86asm_type = 'nasm' && X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
5530         test $x86asm_type = 'yasm' && X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
5531         X86ASMFLAGS="-f $objformat"
5532         enabled pic               && append X86ASMFLAGS "-DPIC"
5533         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
5534         case "$objformat" in
5535             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
5536         esac
5537
5538         check_x86asm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
5539         check_x86asm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
5540         check_x86asm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
5541         check_x86asm "CPU amdnop" || disable cpunop
5542     fi
5543
5544     case "$cpu" in
5545         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5546             disable fast_clz
5547         ;;
5548     esac
5549
5550 fi
5551
5552 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
5553
5554 check_ldflags -Wl,--as-needed
5555 check_ldflags -Wl,-z,noexecstack
5556
5557 if check_func dlopen && check_func dlsym; then
5558     ldl=
5559 elif check_func dlopen -ldl && check_func dlsym -ldl; then
5560     ldl=-ldl
5561 fi
5562
5563 avisynth_demuxer_extralibs='$ldl'
5564 cuda_extralibs='$ldl'
5565 decklink_outdev_extralibs="$decklink_outdev_extralibs $ldl"
5566 decklink_indev_extralibs="$decklink_indev_extralibs $ldl"
5567 frei0r_filter_extralibs='$ldl'
5568 frei0r_src_filter_extralibs='$ldl'
5569 ladspa_filter_extralibs='$ldl'
5570 nvenc_extralibs='$ldl'
5571 coreimage_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5572 coreimagesrc_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5573
5574 if ! disabled network; then
5575     check_func getaddrinfo $network_extralibs
5576     check_func inet_aton $network_extralibs
5577
5578     check_type netdb.h "struct addrinfo"
5579     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5580     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5581     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5582     check_type poll.h "struct pollfd"
5583     check_type netinet/sctp.h "struct sctp_event_subscribe"
5584     check_struct "sys/socket.h" "struct msghdr" msg_flags
5585     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5586     check_type netinet/in.h "struct sockaddr_in6"
5587     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5588     check_type "sys/types.h sys/socket.h" socklen_t
5589
5590     # Prefer arpa/inet.h over winsock2
5591     if check_header arpa/inet.h ; then
5592         check_func closesocket
5593     elif check_header winsock2.h ; then
5594         check_func_headers winsock2.h closesocket -lws2 &&
5595             network_extralibs="-lws2" ||
5596         { check_func_headers winsock2.h closesocket -lws2_32 &&
5597             network_extralibs="-lws2_32"; } || disable winsock2_h network
5598         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5599
5600         check_type ws2tcpip.h socklen_t
5601         check_type ws2tcpip.h "struct addrinfo"
5602         check_type ws2tcpip.h "struct group_source_req"
5603         check_type ws2tcpip.h "struct ip_mreq_source"
5604         check_type ws2tcpip.h "struct ipv6_mreq"
5605         check_type winsock2.h "struct pollfd"
5606         check_struct winsock2.h "struct sockaddr" sa_len
5607         check_type ws2tcpip.h "struct sockaddr_in6"
5608         check_type ws2tcpip.h "struct sockaddr_storage"
5609     else
5610         disable network
5611     fi
5612 fi
5613
5614 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5615 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5616 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5617 check_builtin sarestart signal.h "SA_RESTART"
5618 check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" -lpthread
5619 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5620 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5621 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5622 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5623
5624 case "$custom_allocator" in
5625     jemalloc)
5626         # jemalloc by default does not use a prefix
5627         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5628     ;;
5629     tcmalloc)
5630         require_pkg_config libtcmalloc gperftools/tcmalloc.h tc_malloc
5631         malloc_prefix=tc_
5632     ;;
5633 esac
5634
5635 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5636 check_func  ${malloc_prefix}memalign            && enable memalign
5637 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5638
5639 check_func  access
5640 check_func_headers stdlib.h arc4random
5641 check_func_headers time.h clock_gettime ||
5642     { check_lib clock_gettime time.h clock_gettime -lrt && LIBRT="-lrt"; }
5643 check_func  fcntl
5644 check_func  fork
5645 check_func  gethrtime
5646 check_func  getopt
5647 check_func  getrusage
5648 check_func  gettimeofday
5649 check_func  isatty
5650 check_func  mach_absolute_time
5651 check_func  mkstemp
5652 check_func  mmap
5653 check_func  mprotect
5654 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5655 check_func_headers time.h nanosleep ||
5656     { check_lib nanosleep time.h nanosleep -lrt && LIBRT="-lrt"; }
5657 check_func  sched_getaffinity
5658 check_func  setrlimit
5659 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5660 check_func  strerror_r
5661 check_func  sysconf
5662 check_func  sysctl
5663 check_func  usleep
5664
5665 check_func_headers conio.h kbhit
5666 check_func_headers io.h setmode
5667 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5668 check_func_headers stdlib.h getenv
5669 check_func_headers sys/stat.h lstat
5670
5671 check_func_headers windows.h GetProcessAffinityMask
5672 check_func_headers windows.h GetProcessTimes
5673 check_func_headers windows.h GetSystemTimeAsFileTime
5674 check_func_headers windows.h LoadLibrary
5675 check_func_headers windows.h MapViewOfFile
5676 check_func_headers windows.h PeekNamedPipe
5677 check_func_headers windows.h SetConsoleTextAttribute
5678 check_func_headers windows.h SetConsoleCtrlHandler
5679 check_func_headers windows.h Sleep
5680 check_func_headers windows.h VirtualAlloc
5681 check_struct windows.h "CONDITION_VARIABLE" Ptr
5682 check_func_headers glob.h glob
5683 enabled xlib &&
5684     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5685
5686 check_header AudioToolbox/AudioToolbox.h
5687 check_header d3d11.h
5688 check_header direct.h
5689 check_header dirent.h
5690 check_header dlfcn.h
5691 check_header dxgidebug.h
5692 check_header dxva.h
5693 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5694 check_header io.h
5695 check_header libcrystalhd/libcrystalhd_if.h
5696 check_header mach/mach_time.h
5697 check_header malloc.h
5698 check_header net/udplite.h
5699 check_header poll.h
5700 check_header sys/mman.h
5701 check_header sys/param.h
5702 check_header sys/resource.h
5703 check_header sys/select.h
5704 check_header sys/time.h
5705 check_header sys/un.h
5706 check_header termios.h
5707 check_header unistd.h
5708 check_header valgrind/valgrind.h
5709 check_header VideoDecodeAcceleration/VDADecoder.h
5710 check_header VideoToolbox/VideoToolbox.h
5711 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5712 enabled videotoolbox && check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferColorPrimaries_ITU_R_2020 -framework CoreVideo
5713 check_header windows.h
5714 check_header X11/extensions/XvMClib.h
5715 check_header asm/types.h
5716
5717 # it seems there are versions of clang in some distros that try to use the
5718 # gcc headers, which explodes for stdatomic
5719 # so we also check that atomics actually work here
5720 check_builtin stdatomic_h stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0)"
5721
5722 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
5723 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
5724 check_lib wincrypt "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
5725 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
5726
5727 check_lib coreservices "CoreServices/CoreServices.h" UTGetOSTypeFromString "-framework CoreServices"
5728
5729 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5730
5731 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5732 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5733 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5734 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5735 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5736
5737 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
5738 check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
5739 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
5740 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
5741 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5742 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5743 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
5744 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
5745 check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
5746
5747 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5748
5749 check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt
5750
5751 if ! disabled w32threads && ! enabled pthreads; then
5752     check_func_headers "windows.h process.h" _beginthreadex &&
5753         enable w32threads || disable w32threads
5754     if ! enabled w32threads && enabled winrt; then
5755         check_func_headers "windows.h" CreateThread &&
5756             enable w32threads || disable w32threads
5757     fi
5758 fi
5759
5760 # check for some common methods of building with pthread support
5761 # do this before the optional library checks as some of them require pthreads
5762 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5763     if check_lib pthreads pthread.h pthread_join   -pthread &&
5764        check_lib pthreads pthread.h pthread_create -pthread; then
5765         add_cflags -pthread
5766     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
5767          check_lib pthreads pthread.h pthread_create -pthreads; then
5768         add_cflags -pthreads
5769     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
5770          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
5771         add_cflags -ldl -pthread
5772     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
5773          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
5774         :
5775     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
5776          check_lib pthreads pthread.h pthread_create -lpthread; then
5777         :
5778     elif check_func pthread_join && check_func pthread_create; then
5779         enable pthreads
5780     fi
5781     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5782 fi
5783
5784
5785 if enabled pthreads; then
5786   check_func pthread_cancel
5787 fi
5788
5789 enabled pthreads &&
5790     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)"
5791
5792 disabled  zlib || check_lib zlib   zlib.h      zlibVersion    -lz
5793 disabled bzlib || check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
5794 disabled  lzma || check_lib lzma   lzma.h lzma_version_number -llzma
5795
5796 check_lib libm math.h sin -lm && LIBM="-lm"
5797 disabled crystalhd || check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
5798
5799 atan2f_args=2
5800 copysign_args=2
5801 hypot_args=2
5802 ldexpf_args=2
5803 powf_args=2
5804
5805 for func in $MATH_FUNCS; do
5806     eval check_mathfunc $func \${${func}_args:-1} $LIBM
5807 done
5808
5809 for func in $COMPLEX_FUNCS; do
5810     eval check_complexfunc $func \${${func}_args:-1}
5811 done
5812
5813 # these are off by default, so fail if requested and not available
5814 enabled avfoundation_indev && { check_header_objcc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
5815 enabled avfoundation_indev && { check_lib avfoundation_indev CoreGraphics/CoreGraphics.h CGGetActiveDisplayList -framework CoreGraphics ||
5816                                 check_lib avfoundation_indev ApplicationServices/ApplicationServices.h CGGetActiveDisplayList -framework ApplicationServices; }
5817 enabled cuda_sdk          && require cuda_sdk cuda.h cuCtxCreate -lcuda
5818 enabled cuvid             && { enabled cuda ||
5819                                die "ERROR: CUVID requires CUDA"; }
5820 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5821 enabled coreimage_filter  && { check_header_objcc QuartzCore/CoreImage.h || disable coreimage_filter; }
5822 enabled coreimagesrc_filter && { check_header_objcc QuartzCore/CoreImage.h || disable coreimagesrc_filter; }
5823 enabled decklink          && { { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; } &&
5824                                { check_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a060100" || die "ERROR: Decklink API version must be >= 10.6.1."; } }
5825 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
5826 enabled gmp               && require gmp gmp.h mpz_export -lgmp
5827 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
5828 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads || die "ERROR: jni not found"; }
5829 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
5830 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5831 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
5832 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
5833 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
5834 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5835                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
5836                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5837 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
5838 enabled libdc1394         && require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new
5839 enabled libfdk_aac        && { use_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5840                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5841                                  warn "using libfdk without pkg-config"; } }
5842 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"
5843 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
5844 enabled fontconfig        && enable libfontconfig
5845 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
5846 enabled libfreetype       && require_pkg_config freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
5847 enabled libfribidi        && require_pkg_config fribidi fribidi.h fribidi_version_info
5848 enabled libgme            && { use_pkg_config libgme gme/gme.h gme_new_emu ||
5849                                require libgme gme/gme.h gme_new_emu -lgme -lstdc++; }
5850 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5851                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
5852                                done || die "ERROR: libgsm not found"; }
5853 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
5854 enabled libkvazaar        && require_pkg_config "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
5855 # While it may appear that require is being used as a pkg-config
5856 # fallback for libmfx, it is actually being used to detect a different
5857 # installation route altogether.  If libmfx is installed via the Intel
5858 # Media SDK or Intel Media Server Studio, these don't come with
5859 # pkg-config support.  Instead, users should make sure that the build
5860 # can find the libraries and headers through other means.
5861 enabled libmfx            && { use_pkg_config libmfx "mfx/mfxvideo.h" MFXInit ||
5862                                { require libmfx "mfx/mfxvideo.h" MFXInit -llibmfx && warn "using libmfx without pkg-config"; } }
5863 enabled libmodplug        && require_pkg_config libmodplug libmodplug/modplug.h ModPlug_Load
5864 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5865 enabled libmysofa         && require libmysofa "mysofa.h" mysofa_load -lmysofa
5866 enabled libnpp            && require libnpp npp.h nppGetLibVersion -lnppi -lnppc
5867 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5868 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5869 enabled libopencv         && { check_header opencv2/core/core_c.h &&
5870                                { use_pkg_config opencv opencv2/core/core_c.h cvCreateImageHeader ||
5871                                  require opencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
5872                                require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader; }
5873 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
5874 enabled libopenjpeg       && { { check_lib libopenjpeg openjpeg-2.2/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5875                                check_lib libopenjpeg openjpeg-2.2/openjpeg.h opj_version -lopenjp2 ||
5876                                { check_lib libopenjpeg openjpeg-2.1/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5877                                check_lib libopenjpeg openjpeg-2.1/openjpeg.h opj_version -lopenjp2 ||
5878                                { check_lib libopenjpeg openjpeg-2.0/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5879                                { check_lib libopenjpeg openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5880                                { check_lib libopenjpeg openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5881                                die "ERROR: libopenjpeg not found"; }
5882 enabled libopenmpt        && require_pkg_config "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create
5883 enabled libopus           && {
5884     enabled libopus_decoder && {
5885         require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
5886     }
5887     enabled libopus_encoder && {
5888         require_pkg_config opus opus_multistream.h opus_multistream_surround_encoder_create
5889     }
5890 }
5891 enabled libpulse          && require_pkg_config libpulse pulse/pulseaudio.h pa_context_new
5892 enabled librsvg           && require_pkg_config librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
5893 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
5894 enabled librubberband     && require_pkg_config "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new
5895 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
5896 enabled libsmbclient      && { use_pkg_config smbclient libsmbclient.h smbc_init ||
5897                                require smbclient libsmbclient.h smbc_init -lsmbclient; }
5898 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy
5899 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr && LIBSOXR="-lsoxr"
5900 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
5901 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
5902 enabled libtesseract      && require_pkg_config tesseract tesseract/capi.h TessBaseAPICreate
5903 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
5904 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
5905                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
5906                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
5907 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
5908 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
5909 enabled libvmaf           && { check_lib libvmaf "libvmaf.h" "compute_vmaf" -lvmaf -lstdc++ -lpthread -lm ||
5910                                die "ERROR: libvmaf must be installed"; }
5911 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
5912 enabled libvorbis         && require_pkg_config vorbis vorbis/codec.h vorbis_info_init &&
5913                              require_pkg_config vorbisenc vorbis/vorbisenc.h vorbis_encode_init
5914
5915 enabled libvpx            && {
5916     enabled libvpx_vp8_decoder && {
5917         use_pkg_config "vpx >= 0.9.1" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
5918             check_lib libvpx_vp8_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
5919                 die "ERROR: libvpx decoder version must be >=0.9.1";
5920     }
5921     enabled libvpx_vp8_encoder && {
5922         use_pkg_config "vpx >= 0.9.7" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
5923             check_lib libvpx_vp8_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
5924                 die "ERROR: libvpx encoder version must be >=0.9.7";
5925     }
5926     enabled libvpx_vp9_decoder && {
5927         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
5928             check_lib libvpx_vp9_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx
5929     }
5930     enabled libvpx_vp9_encoder && {
5931         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
5932             check_lib libvpx_vp9_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx
5933     }
5934     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
5935         die "libvpx enabled but no supported decoders found"
5936     fi
5937 }
5938
5939 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
5940 enabled libwebp           && {
5941     enabled libwebp_encoder      && require_pkg_config "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
5942     enabled libwebp_anim_encoder && { use_pkg_config "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit || disable libwebp_anim_encoder; } }
5943 enabled libx264           && { use_pkg_config x264 "stdint.h x264.h" x264_encoder_encode ||
5944                                { require libx264 "stdint.h x264.h" x264_encoder_encode -lx264 &&
5945                                  warn "using libx264 without pkg-config"; } } &&
5946                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
5947                                die "ERROR: libx264 must be installed and version must be >= 0.118."; } &&
5948                              { check_cpp_condition x264.h "X264_MPEG2" &&
5949                                enable libx262; }
5950 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
5951                              { check_cpp_condition x265.h "X265_BUILD >= 68" ||
5952                                die "ERROR: libx265 version must be >= 68."; }
5953 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode -lxavs
5954 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
5955 enabled libzimg           && require_pkg_config "zimg >= 2.3.0" zimg.h zimg_get_api_version
5956 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
5957 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi &&
5958                              { check_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
5959                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
5960 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
5961 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
5962                                { ! enabled cross_compile &&
5963                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
5964                                  add_ldflags -L/opt/vc/lib/ &&
5965                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
5966                                die "ERROR: mmal not found" &&
5967                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
5968 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
5969                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
5970                                die "ERROR: openal not found"; } &&
5971                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
5972                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
5973 enabled opencl            && { check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
5974                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
5975                                die "ERROR: opencl not found"; } &&
5976                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
5977                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
5978                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
5979 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
5980                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
5981                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
5982                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
5983                                die "ERROR: opengl not found."
5984                              }
5985 enabled omx_rpi           && { check_header OMX_Core.h ||
5986                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_header OMX_Core.h ; } ||
5987                                die "ERROR: OpenMAX IL headers not found"; }
5988 enabled omx               && { check_header OMX_Core.h || die "ERROR: OpenMAX IL headers not found"; }
5989 enabled openssl           && { use_pkg_config openssl openssl/ssl.h OPENSSL_init_ssl ||
5990                                use_pkg_config openssl openssl/ssl.h SSL_library_init ||
5991                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
5992                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
5993                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
5994                                die "ERROR: openssl not found"; }
5995 enabled qtkit_indev      && { check_header_objcc QTKit/QTKit.h || disable qtkit_indev; }
5996
5997 if enabled gcrypt; then
5998     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
5999     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
6000         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
6001         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
6002         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
6003             die "ERROR: gcrypt not found"
6004         add_cflags $gcrypt_cflags && add_extralibs $gcrypt_extralibs
6005     else
6006         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
6007     fi
6008 fi
6009
6010 disabled sdl && disable sdl2
6011 if ! disabled sdl2; then
6012     SDL2_CONFIG="${cross_prefix}sdl2-config"
6013     if check_pkg_config sdl2 SDL_events.h SDL_PollEvent; then
6014         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6015         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6016         check_func SDL_Init $sdl2_extralibs $sdl2_cflags && enable sdl2
6017     else
6018       if "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6019         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6020         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6021         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6022         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6023         check_func SDL_Init $sdl2_extralibs $sdl2_cflags && enable sdl2
6024       fi
6025     fi
6026     if test $target_os = "mingw32"; then
6027         sdl2_extralibs="$sdl2_extralibs -mconsole"
6028     fi
6029 fi
6030 enabled sdl2 && enable sdl && add_cflags $sdl2_cflags && add_extralibs $sdl2_extralibs
6031
6032 if enabled decklink; then
6033     case $target_os in
6034         mingw32*|mingw64*|win32|win64)
6035             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6036             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6037             ;;
6038     esac
6039 fi
6040
6041 disabled securetransport || { check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6042     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext SecItemImport" "-Wl,-framework,CoreFoundation -Wl,-framework,Security"; }
6043
6044 disabled schannel || { check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6045                        check_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" && enable schannel && add_extralibs -lsecur32; }
6046
6047 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6048 enabled makeinfo \
6049     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6050     && enable makeinfo_html || disable makeinfo_html
6051 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6052 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6053 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6054 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6055
6056 check_header linux/fb.h
6057 check_header linux/videodev.h
6058 check_header linux/videodev2.h
6059 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
6060
6061 check_header sys/videoio.h
6062 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
6063
6064 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6065 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6066 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6067 # w32api 3.12 had it defined wrong
6068 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
6069
6070 check_type "dshow.h" IBaseFilter
6071
6072 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6073 { check_header dev/bktr/ioctl_meteor.h &&
6074   check_header dev/bktr/ioctl_bt848.h; } ||
6075 { check_header machine/ioctl_meteor.h &&
6076   check_header machine/ioctl_bt848.h; } ||
6077 { check_header dev/video/meteor/ioctl_meteor.h &&
6078   check_header dev/video/bktr/ioctl_bt848.h; } ||
6079 check_header dev/ic/bt8xx.h
6080
6081 if check_struct sys/soundcard.h audio_buf_info bytes; then
6082     enable_safe sys/soundcard.h
6083 else
6084     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
6085     #include <sys/soundcard.h>
6086     audio_buf_info abc;
6087 EOF
6088 fi
6089 check_header soundcard.h
6090
6091 enabled_any alsa_indev alsa_outdev &&
6092     check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
6093
6094 enabled jack_indev && check_lib jack jack/jack.h jack_client_open -ljack &&
6095     check_func jack_port_get_latency_range -ljack
6096
6097 enabled_any sndio_indev sndio_outdev && check_lib sndio sndio.h sio_open -lsndio
6098
6099 if enabled libcdio; then
6100     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6101     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6102     die "ERROR: No usable libcdio/cdparanoia found"
6103 fi
6104
6105 if ! disabled libxcb; then
6106     check_pkg_config "xcb >= 1.4" xcb/xcb.h xcb_connect || {
6107         enabled libxcb && die "ERROR: libxcb >= 1.4 not found";
6108     } && enable libxcb
6109
6110 if enabled libxcb; then
6111     disabled libxcb_shm || {
6112         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
6113             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
6114         } && check_header sys/shm.h && enable libxcb_shm; }
6115
6116     disabled libxcb_xfixes || {
6117         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
6118             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
6119         } && enable libxcb_xfixes; }
6120
6121     disabled libxcb_shape || {
6122         check_pkg_config xcb-shape xcb/shape.h xcb_shape_get_rectangles || {
6123             enabled libxcb_shape && die "ERROR: libxcb_shape not found";
6124         } && enable libxcb_shape; }
6125
6126     add_cflags $xcb_cflags $xcb_shm_cflags $xcb_xfixes_cflags $xcb_shape_cflags
6127     add_extralibs $xcb_extralibs $xcb_shm_extralibs $xcb_xfixes_extralibs $xcb_shape_extralibs
6128 fi
6129 fi
6130
6131 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6132
6133 # d3d11va requires linking directly to dxgi and d3d11 if not building for
6134 # the desktop api partition
6135 enabled LoadLibrary || d3d11va_extralibs="-ldxgi -ld3d11"
6136
6137 enabled vaapi &&
6138     check_lib vaapi va/va.h vaInitialize -lva
6139
6140 enabled vaapi &&
6141     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
6142     disable vaapi
6143
6144 enabled vaapi &&
6145     check_lib vaapi_drm "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm
6146
6147 enabled vaapi &&
6148     check_lib vaapi_x11 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 -lX11
6149
6150 enabled vdpau &&
6151     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
6152     disable vdpau
6153
6154 enabled vdpau &&
6155     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6156
6157 if enabled x86; then
6158     case $target_os in
6159         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6160             ;;
6161         *)
6162             disable cuda cuvid nvenc
6163             ;;
6164     esac
6165 else
6166     disable cuda cuvid nvenc
6167 fi
6168
6169 enabled nvenc &&
6170     check_cc -I$source_path <<EOF || disable nvenc
6171 #include "compat/nvenc/nvEncodeAPI.h"
6172 NV_ENCODE_API_FUNCTION_LIST flist;
6173 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6174 int main(void) { return 0; }
6175 EOF
6176
6177 # Funny iconv installations are not unusual, so check it after all flags have been set
6178 disabled iconv || check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6179
6180 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6181
6182 # add some useful compiler flags if supported
6183 check_cflags -Wdeclaration-after-statement
6184 check_cflags -Wall
6185 check_cflags -Wdisabled-optimization
6186 check_cflags -Wpointer-arith
6187 check_cflags -Wredundant-decls
6188 check_cflags -Wwrite-strings
6189 check_cflags -Wtype-limits
6190 check_cflags -Wundef
6191 check_cflags -Wmissing-prototypes
6192 check_cflags -Wno-pointer-to-int-cast
6193 check_cflags -Wstrict-prototypes
6194 check_cflags -Wempty-body
6195
6196 if enabled extra_warnings; then
6197     check_cflags -Wcast-qual
6198     check_cflags -Wextra
6199     check_cflags -Wpedantic
6200 fi
6201
6202 check_disable_warning(){
6203     warning_flag=-W${1#-Wno-}
6204     test_cflags $warning_flag && add_cflags $1
6205 }
6206
6207 check_disable_warning -Wno-parentheses
6208 check_disable_warning -Wno-switch
6209 check_disable_warning -Wno-format-zero-length
6210 check_disable_warning -Wno-pointer-sign
6211 check_disable_warning -Wno-unused-const-variable
6212
6213 check_disable_warning_headers(){
6214     warning_flag=-W${1#-Wno-}
6215     test_cflags $warning_flag && add_cflags_headers $1
6216 }
6217
6218 check_disable_warning_headers -Wno-deprecated-declarations
6219 check_disable_warning_headers -Wno-unused-variable
6220
6221 check_cc <<EOF && enable blocks_extension
6222 void (^block)(void);
6223 EOF
6224
6225 # add some linker flags
6226 check_ldflags -Wl,--warn-common
6227 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6228 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
6229 enabled rpath && add_ldlibflags -Wl,-rpath,$libdir
6230 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6231
6232 # add some strip flags
6233 check_stripflags -x
6234
6235 enabled neon_clobber_test &&
6236     check_ldflags -Wl,--wrap,avcodec_open2              \
6237                   -Wl,--wrap,avcodec_decode_audio4      \
6238                   -Wl,--wrap,avcodec_decode_video2      \
6239                   -Wl,--wrap,avcodec_decode_subtitle2   \
6240                   -Wl,--wrap,avcodec_encode_audio2      \
6241                   -Wl,--wrap,avcodec_encode_video2      \
6242                   -Wl,--wrap,avcodec_encode_subtitle    \
6243                   -Wl,--wrap,avcodec_send_packet        \
6244                   -Wl,--wrap,avcodec_receive_packet     \
6245                   -Wl,--wrap,avcodec_send_frame         \
6246                   -Wl,--wrap,avcodec_receive_frame      \
6247                   -Wl,--wrap,swr_convert                \
6248                   -Wl,--wrap,avresample_convert ||
6249     disable neon_clobber_test
6250
6251 enabled xmm_clobber_test &&
6252     check_ldflags -Wl,--wrap,avcodec_open2              \
6253                   -Wl,--wrap,avcodec_decode_audio4      \
6254                   -Wl,--wrap,avcodec_decode_video2      \
6255                   -Wl,--wrap,avcodec_decode_subtitle2   \
6256                   -Wl,--wrap,avcodec_encode_audio2      \
6257                   -Wl,--wrap,avcodec_encode_video2      \
6258                   -Wl,--wrap,avcodec_encode_subtitle    \
6259                   -Wl,--wrap,avcodec_send_packet        \
6260                   -Wl,--wrap,avcodec_receive_packet     \
6261                   -Wl,--wrap,avcodec_send_frame         \
6262                   -Wl,--wrap,avcodec_receive_frame      \
6263                   -Wl,--wrap,swr_convert                \
6264                   -Wl,--wrap,avresample_convert         \
6265                   -Wl,--wrap,sws_scale ||
6266     disable xmm_clobber_test
6267
6268 check_ld "cc" <<EOF && enable proper_dce
6269 extern const int array[512];
6270 static inline int func(void) { return array[0]; }
6271 int main(void) { return 0; }
6272 EOF
6273
6274 if enabled proper_dce; then
6275     echo "X { local: *; };" > $TMPV
6276     if test_ldflags -Wl,${version_script},$TMPV; then
6277         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6278         check_cc <<EOF && enable symver_asm_label
6279 void ff_foo(void) __asm__ ("av_foo@VERSION");
6280 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6281 EOF
6282         check_cc <<EOF && enable symver_gnu_asm
6283 __asm__(".symver ff_foo,av_foo@VERSION");
6284 void ff_foo(void) {}
6285 EOF
6286     fi
6287 fi
6288
6289 if [ -z "$optflags" ]; then
6290     if enabled small; then
6291         optflags=$cflags_size
6292     elif enabled optimizations; then
6293         optflags=$cflags_speed
6294     else
6295         optflags=$cflags_noopt
6296     fi
6297 fi
6298
6299 if [ -z "$nvccflags" ]; then
6300     nvccflags=$nvccflags_default
6301 fi
6302
6303 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6304     nvccflags="$nvccflags -m64"
6305 else
6306     nvccflags="$nvccflags -m32"
6307 fi
6308
6309 check_optflags(){
6310     check_cflags "$@"
6311     enabled lto && check_ldflags "$@"
6312 }
6313
6314 check_optflags $optflags
6315 check_optflags -fno-math-errno
6316 check_optflags -fno-signed-zeros
6317
6318 if enabled lto; then
6319     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6320     check_cflags  -flto
6321     check_ldflags -flto $cpuflags
6322     disable inline_asm_direct_symbol_refs
6323 fi
6324
6325 enabled ftrapv && check_cflags -ftrapv
6326
6327 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6328 int x;
6329 EOF
6330
6331
6332 if enabled icc; then
6333     # Just warnings, no remarks
6334     check_cflags -w1
6335     # -wd: Disable following warnings
6336     # 144, 167, 556: -Wno-pointer-sign
6337     # 188: enumerated type mixed with another type
6338     # 1292: attribute "foo" ignored
6339     # 1419: external declaration in primary source file
6340     # 10006: ignoring unknown option -fno-signed-zeros
6341     # 10148: ignoring unknown option -Wno-parentheses
6342     # 10156: ignoring option '-W'; no argument required
6343     # 13200: No EMMS instruction before call to function
6344     # 13203: No EMMS instruction before return from function
6345     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6346     # 11030: Warning unknown option --as-needed
6347     # 10156: ignoring option '-export'; no argument required
6348     check_ldflags -wd10156,11030
6349     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6350     enable ebp_available
6351     # The test above does not test linking
6352     enabled lto && disable symver_asm_label
6353     if enabled x86_32; then
6354         icc_version=$($cc -dumpversion)
6355         test ${icc_version%%.*} -ge 11 &&
6356             check_cflags -falign-stack=maintain-16-byte ||
6357             disable aligned_stack
6358     fi
6359 elif enabled ccc; then
6360     # disable some annoying warnings
6361     add_cflags -msg_disable bitnotint
6362     add_cflags -msg_disable mixfuncvoid
6363     add_cflags -msg_disable nonstandcast
6364     add_cflags -msg_disable unsupieee
6365 elif enabled gcc; then
6366     check_optflags -fno-tree-vectorize
6367     check_cflags -Werror=format-security
6368     check_cflags -Werror=implicit-function-declaration
6369     check_cflags -Werror=missing-prototypes
6370     check_cflags -Werror=return-type
6371     check_cflags -Werror=vla
6372     check_cflags -Wformat
6373     check_cflags -fdiagnostics-color=auto
6374     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6375 elif enabled llvm_gcc; then
6376     check_cflags -mllvm -stack-alignment=16
6377 elif enabled clang; then
6378     check_cflags -mllvm -stack-alignment=16
6379     check_cflags -mstack-alignment=16
6380     check_cflags -Qunused-arguments
6381     check_cflags -Werror=implicit-function-declaration
6382     check_cflags -Werror=missing-prototypes
6383     check_cflags -Werror=return-type
6384 elif enabled cparser; then
6385     add_cflags -Wno-missing-variable-declarations
6386     add_cflags -Wno-empty-statement
6387 elif enabled armcc; then
6388     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6389     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6390     # 2523: use of inline assembly is deprecated
6391     add_cflags -W${armcc_opt},--diag_suppress=2523
6392     add_cflags -W${armcc_opt},--diag_suppress=1207
6393     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6394     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6395     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6396     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6397 elif enabled tms470; then
6398     add_cflags -pds=824 -pds=837
6399     disable inline_asm
6400 elif enabled pathscale; then
6401     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6402 elif enabled_any msvc icl; then
6403     enabled x86_32 && disable aligned_stack
6404     enabled_all x86_32 debug && add_cflags -Oy-
6405     enabled debug && add_ldflags -debug
6406     enable pragma_deprecated
6407     if enabled icl; then
6408         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6409         # (correctly) on icl 13.x.
6410         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6411             add_cflags -Qansi-alias
6412         # Some inline asm is not compilable in debug
6413         if enabled debug; then
6414             disable ebp_available
6415             disable ebx_available
6416         fi
6417     fi
6418     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6419     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
6420     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6421     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6422     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6423     # MSVC 2013 and newer can handle it fine.
6424     # If this declspec fails, force including stdlib.h before the restrict redefinition
6425     # happens in config.h.
6426     if [ $_restrict != restrict ]; then
6427         check_cc <<EOF || add_cflags -FIstdlib.h
6428 __declspec($_restrict) void* foo(int);
6429 EOF
6430     fi
6431     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6432     # Issue has been fixed in MSVC v19.00.24218.
6433     check_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6434         check_cflags -d2SSAOptimizer-
6435     # enable utf-8 source processing on VS2015 U2 and newer
6436     check_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6437         add_cflags -utf-8
6438 fi
6439
6440 for pfx in "" host_; do
6441     varname=${pfx%_}cc_type
6442     eval "type=\$$varname"
6443     if [ "$type" = "msvc" ]; then
6444         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6445 static inline int foo(int a) { return a; }
6446 EOF
6447     fi
6448 done
6449
6450 case $as_type in
6451     clang)
6452         add_asflags -Qunused-arguments
6453     ;;
6454 esac
6455
6456 case $ld_type in
6457     clang)
6458         check_ldflags -Qunused-arguments
6459     ;;
6460 esac
6461
6462 case $target_os in
6463     osf1)
6464         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
6465     ;;
6466 esac
6467
6468 enable frame_thread_encoder
6469
6470 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6471
6472 check_deps $CONFIG_LIST       \
6473            $CONFIG_EXTRA      \
6474            $HAVE_LIST         \
6475            $ALL_COMPONENTS    \
6476
6477 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"
6478
6479
6480 if test $target_os = "haiku"; then
6481     disable memalign
6482     disable posix_memalign
6483 fi
6484
6485 # add_dep lib dep
6486 # -> enable ${lib}_deps_${dep}
6487 # -> add $dep to ${lib}_deps only once
6488 add_dep() {
6489     lib=$1
6490     dep=$2
6491     enabled "${lib}_deps_${dep}" && return 0
6492     enable  "${lib}_deps_${dep}"
6493     prepend "${lib}_deps" $dep
6494 }
6495
6496 # merge deps lib components
6497 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
6498 merge_deps() {
6499     lib=$1
6500     shift
6501     for comp in $*; do
6502         enabled $comp || continue
6503         eval "dep=\"\$${comp}_deps\""
6504         for d in $dep; do
6505             add_dep $lib $d
6506         done
6507     done
6508 }
6509
6510 merge_deps libavfilter $FILTER_LIST
6511
6512 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6513
6514 for thread in $THREADS_LIST; do
6515     if enabled $thread; then
6516         test -n "$thread_type" &&
6517             die "ERROR: Only one thread type must be selected." ||
6518             thread_type="$thread"
6519     fi
6520 done
6521
6522 if disabled stdatomic_h; then
6523     if enabled atomics_gcc; then
6524         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6525     elif enabled atomics_win32; then
6526         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6527     elif enabled atomics_suncc; then
6528         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6529     elif enabled pthreads; then
6530         add_compat atomics/pthread/stdatomic.o
6531         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6532     else
6533         enabled threads && die "Threading is enabled, but no atomics are available"
6534         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6535     fi
6536 fi
6537
6538 # Check if requested libraries were found.
6539 for lib in $AUTODETECT_LIBS; do
6540     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6541 done
6542
6543 enabled zlib && add_cppflags -DZLIB_CONST
6544
6545 # conditional library dependencies, in linking order
6546 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6547 enabled afir_filter         && prepend avfilter_deps "avcodec"
6548 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6549 enabled aresample_filter    && prepend avfilter_deps "swresample"
6550 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6551 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6552 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6553 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6554 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6555 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6556 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
6557 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6558 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6559 enabled pan_filter          && prepend avfilter_deps "swresample"
6560 enabled pp_filter           && prepend avfilter_deps "postproc"
6561 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6562 enabled resample_filter && prepend avfilter_deps "avresample"
6563 enabled sab_filter          && prepend avfilter_deps "swscale"
6564 enabled scale_filter    && prepend avfilter_deps "swscale"
6565 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6566 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6567 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6568 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6569 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6570 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
6571 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6572 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6573 enabled spp_filter          && prepend avfilter_deps "avcodec"
6574 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6575 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6576 enabled zoompan_filter      && prepend avfilter_deps "swscale"
6577
6578 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6579
6580 enabled opus_decoder    && prepend avcodec_deps "swresample"
6581
6582 expand_deps(){
6583     lib_deps=${1}_deps
6584     eval "deps=\$$lib_deps"
6585     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6586     unique $lib_deps
6587 }
6588
6589 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6590 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6591
6592 map 'expand_deps $v' $LIBRARY_LIST
6593
6594 license="LGPL version 2.1 or later"
6595 if enabled nonfree; then
6596     license="nonfree and unredistributable"
6597 elif enabled gplv3; then
6598     license="GPL version 3 or later"
6599 elif enabled lgplv3; then
6600     license="LGPL version 3 or later"
6601 elif enabled gpl; then
6602     license="GPL version 2 or later"
6603 fi
6604
6605 if test "$quiet" != "yes"; then
6606
6607 echo "install prefix            $prefix"
6608 echo "source path               $source_path"
6609 echo "C compiler                $cc"
6610 echo "C library                 $libc_type"
6611 if test "$host_cc" != "$cc"; then
6612     echo "host C compiler           $host_cc"
6613     echo "host C library            $host_libc_type"
6614 fi
6615 echo "ARCH                      $arch ($cpu)"
6616 if test "$build_suffix" != ""; then
6617     echo "build suffix              $build_suffix"
6618 fi
6619 if test "$progs_suffix" != ""; then
6620     echo "progs suffix              $progs_suffix"
6621 fi
6622 if test "$extra_version" != ""; then
6623     echo "version string suffix     $extra_version"
6624 fi
6625 echo "big-endian                ${bigendian-no}"
6626 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6627 if enabled x86; then
6628     echo "standalone assembly       ${x86asm-no}"
6629     echo "x86 assembler             ${x86asmexe}"
6630     echo "MMX enabled               ${mmx-no}"
6631     echo "MMXEXT enabled            ${mmxext-no}"
6632     echo "3DNow! enabled            ${amd3dnow-no}"
6633     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6634     echo "SSE enabled               ${sse-no}"
6635     echo "SSSE3 enabled             ${ssse3-no}"
6636     echo "AESNI enabled             ${aesni-no}"
6637     echo "AVX enabled               ${avx-no}"
6638     echo "XOP enabled               ${xop-no}"
6639     echo "FMA3 enabled              ${fma3-no}"
6640     echo "FMA4 enabled              ${fma4-no}"
6641     echo "i686 features enabled     ${i686-no}"
6642     echo "CMOV is fast              ${fast_cmov-no}"
6643     echo "EBX available             ${ebx_available-no}"
6644     echo "EBP available             ${ebp_available-no}"
6645 fi
6646 if enabled aarch64; then
6647     echo "NEON enabled              ${neon-no}"
6648     echo "VFP enabled               ${vfp-no}"
6649 fi
6650 if enabled arm; then
6651     echo "ARMv5TE enabled           ${armv5te-no}"
6652     echo "ARMv6 enabled             ${armv6-no}"
6653     echo "ARMv6T2 enabled           ${armv6t2-no}"
6654     echo "VFP enabled               ${vfp-no}"
6655     echo "NEON enabled              ${neon-no}"
6656     echo "THUMB enabled             ${thumb-no}"
6657 fi
6658 if enabled mips; then
6659     echo "MIPS FPU enabled          ${mipsfpu-no}"
6660     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6661     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6662     echo "MIPS MSA enabled          ${msa-no}"
6663     echo "LOONGSON MMI enabled      ${mmi-no}"
6664 fi
6665 if enabled ppc; then
6666     echo "AltiVec enabled           ${altivec-no}"
6667     echo "VSX enabled               ${vsx-no}"
6668     echo "POWER8 enabled            ${power8-no}"
6669     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6670     echo "dcbzl available           ${dcbzl-no}"
6671 fi
6672 echo "debug symbols             ${debug-no}"
6673 echo "strip symbols             ${stripping-no}"
6674 echo "optimize for size         ${small-no}"
6675 echo "optimizations             ${optimizations-no}"
6676 echo "static                    ${static-no}"
6677 echo "shared                    ${shared-no}"
6678 echo "postprocessing support    ${postproc-no}"
6679 echo "network support           ${network-no}"
6680 echo "threading support         ${thread_type-no}"
6681 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6682 echo "texi2html enabled         ${texi2html-no}"
6683 echo "perl enabled              ${perl-no}"
6684 echo "pod2man enabled           ${pod2man-no}"
6685 echo "makeinfo enabled          ${makeinfo-no}"
6686 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6687 test -n "$random_seed" &&
6688     echo "random seed               ${random_seed}"
6689 echo
6690
6691 echo "External libraries:"
6692 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_in_columns
6693 echo
6694
6695 echo "External libraries providing hardware acceleration:"
6696 print_enabled '' $HWACCEL_LIBRARY_LIST | print_in_columns
6697 echo
6698
6699 echo "Libraries:"
6700 print_enabled '' $LIBRARY_LIST | print_in_columns
6701 echo
6702
6703 echo "Programs:"
6704 print_enabled '' $PROGRAM_LIST | print_in_columns
6705 echo
6706
6707 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6708     echo "Enabled ${type}s:"
6709     eval list=\$$(toupper $type)_LIST
6710     print_enabled '_*' $list | print_in_columns
6711     echo
6712 done
6713
6714 if test -n "$ignore_tests"; then
6715     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
6716     echo "Ignored FATE tests:"
6717     echo $ignore_tests | print_in_columns
6718     echo
6719 fi
6720
6721 echo "License: $license"
6722
6723 echo "Creating configuration files ..."
6724
6725 fi # test "$quiet" != "yes"
6726
6727 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6728
6729 enabled stripping || strip="echo skipping strip"
6730
6731 config_files="$TMPH ffbuild/config.mak doc/config.texi"
6732
6733 cat > ffbuild/config.mak <<EOF
6734 # Automatically generated by configure - do not modify!
6735 ifndef FFMPEG_CONFIG_MAK
6736 FFMPEG_CONFIG_MAK=1
6737 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6738 prefix=$prefix
6739 LIBDIR=\$(DESTDIR)$libdir
6740 SHLIBDIR=\$(DESTDIR)$shlibdir
6741 INCDIR=\$(DESTDIR)$incdir
6742 BINDIR=\$(DESTDIR)$bindir
6743 DATADIR=\$(DESTDIR)$datadir
6744 DOCDIR=\$(DESTDIR)$docdir
6745 MANDIR=\$(DESTDIR)$mandir
6746 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6747 INSTALL_NAME_DIR=$install_name_dir
6748 SRC_PATH=$source_path
6749 SRC_LINK=$source_link
6750 ifndef MAIN_MAKEFILE
6751 SRC_PATH:=\$(SRC_PATH:.%=..%)
6752 endif
6753 CC_IDENT=$cc_ident
6754 ARCH=$arch
6755 INTRINSICS=$intrinsics
6756 CC=$cc
6757 CXX=$cxx
6758 AS=$as
6759 OBJCC=$objcc
6760 LD=$ld
6761 DEPCC=$dep_cc
6762 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6763 DEPAS=$as
6764 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6765 X86ASM=$x86asmexe
6766 DEPX86ASM=$x86asmexe
6767 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
6768 AR=$ar
6769 ARFLAGS=$arflags
6770 AR_O=$ar_o
6771 RANLIB=$ranlib
6772 STRIP=$strip
6773 NVCC=$nvcc
6774 CP=cp -p
6775 LN_S=$ln_s
6776 CPPFLAGS=$CPPFLAGS
6777 CFLAGS=$CFLAGS
6778 CXXFLAGS=$CXXFLAGS
6779 OBJCFLAGS=$OBJCFLAGS
6780 ASFLAGS=$ASFLAGS
6781 NVCCFLAGS=$nvccflags
6782 AS_C=$AS_C
6783 AS_O=$AS_O
6784 OBJCC_C=$OBJCC_C
6785 OBJCC_E=$OBJCC_E
6786 OBJCC_O=$OBJCC_O
6787 CC_C=$CC_C
6788 CC_E=$CC_E
6789 CC_O=$CC_O
6790 CXX_C=$CXX_C
6791 CXX_O=$CXX_O
6792 NVCC_C=$NVCC_C
6793 NVCC_O=$NVCC_O
6794 LD_O=$LD_O
6795 X86ASM_O=$X86ASM_O
6796 LD_LIB=$LD_LIB
6797 LD_PATH=$LD_PATH
6798 DLLTOOL=$dlltool
6799 WINDRES=$windres
6800 DEPWINDRES=$dep_cc
6801 DOXYGEN=$doxygen
6802 LDFLAGS=$LDFLAGS
6803 LDEXEFLAGS=$LDEXEFLAGS
6804 LDLIBFLAGS=$LDLIBFLAGS
6805 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
6806 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
6807 X86ASMFLAGS=$X86ASMFLAGS
6808 BUILDSUF=$build_suffix
6809 PROGSSUF=$progs_suffix
6810 FULLNAME=$FULLNAME
6811 LIBPREF=$LIBPREF
6812 LIBSUF=$LIBSUF
6813 LIBNAME=$LIBNAME
6814 SLIBPREF=$SLIBPREF
6815 SLIBSUF=$SLIBSUF
6816 EXESUF=$EXESUF
6817 EXTRA_VERSION=$extra_version
6818 CCDEP=$CCDEP
6819 CXXDEP=$CXXDEP
6820 CCDEP_FLAGS=$CCDEP_FLAGS
6821 ASDEP=$ASDEP
6822 ASDEP_FLAGS=$ASDEP_FLAGS
6823 X86ASMDEP=$X86ASMDEP
6824 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
6825 CC_DEPFLAGS=$CC_DEPFLAGS
6826 AS_DEPFLAGS=$AS_DEPFLAGS
6827 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
6828 HOSTCC=$host_cc
6829 HOSTLD=$host_ld
6830 HOSTCFLAGS=$host_cflags
6831 HOSTCPPFLAGS=$host_cppflags
6832 HOSTEXESUF=$HOSTEXESUF
6833 HOSTLDFLAGS=$host_ldflags
6834 HOSTEXTRALIBS=$host_extralibs
6835 DEPHOSTCC=$host_cc
6836 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
6837 HOSTCCDEP=$HOSTCCDEP
6838 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
6839 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
6840 HOSTCC_C=$HOSTCC_C
6841 HOSTCC_O=$HOSTCC_O
6842 HOSTLD_O=$HOSTLD_O
6843 TARGET_EXEC=$target_exec $target_exec_args
6844 TARGET_PATH=$target_path
6845 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
6846 CFLAGS-ffplay=${sdl2_cflags}
6847 CFLAGS_HEADERS=$CFLAGS_HEADERS
6848 ZLIB=$($ldflags_filter -lz)
6849 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
6850 EXTRALIBS=$extralibs
6851 COMPAT_OBJS=$compat_objs
6852 INSTALL=$install
6853 LIBTARGET=${LIBTARGET}
6854 SLIBNAME=${SLIBNAME}
6855 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
6856 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
6857 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
6858 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
6859 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
6860 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
6861 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
6862 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
6863 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
6864 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
6865 NOREDZONE_FLAGS=$noredzone_flags
6866 LIBFUZZER_PATH=$libfuzzer_path
6867 IGNORE_TESTS=$ignore_tests
6868 EOF
6869
6870 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
6871
6872 print_program_extralibs(){
6873     eval "program_extralibs=\$${1}_extralibs"
6874     eval echo "EXTRALIBS-${1}=${program_extralibs}" >> ffbuild/config.mak
6875 }
6876
6877 map 'print_program_extralibs $v' $PROGRAM_LIST
6878
6879 cat > $TMPH <<EOF
6880 /* Automatically generated by configure - do not modify! */
6881 #ifndef FFMPEG_CONFIG_H
6882 #define FFMPEG_CONFIG_H
6883 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
6884 #define FFMPEG_LICENSE "$(c_escape $license)"
6885 #define CONFIG_THIS_YEAR 2017
6886 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
6887 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
6888 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
6889 #define av_restrict $_restrict
6890 #define EXTERN_PREFIX "${extern_prefix}"
6891 #define EXTERN_ASM ${extern_prefix}
6892 #define BUILDSUF "$build_suffix"
6893 #define SLIBSUF "$SLIBSUF"
6894 #define HAVE_MMX2 HAVE_MMXEXT
6895 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
6896 EOF
6897
6898 test -n "$assert_level" &&
6899     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
6900
6901 test -n "$malloc_prefix" &&
6902     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
6903
6904 if enabled x86asm; then
6905     append config_files $TMPASM
6906     printf '' >$TMPASM
6907 fi
6908
6909 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
6910
6911
6912 mkdir -p doc
6913 mkdir -p tests
6914 mkdir -p tests/api
6915 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
6916
6917 print_config ARCH_   "$config_files" $ARCH_LIST
6918 print_config HAVE_   "$config_files" $HAVE_LIST
6919 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
6920                                      $CONFIG_EXTRA      \
6921                                      $ALL_COMPONENTS    \
6922
6923 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
6924 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
6925
6926 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
6927 cp_if_changed $TMPH config.h
6928 touch ffbuild/.config
6929
6930 enabled x86asm && cp_if_changed $TMPASM config.asm
6931
6932 cat > $TMPH <<EOF
6933 /* Generated by ffconf */
6934 #ifndef AVUTIL_AVCONFIG_H
6935 #define AVUTIL_AVCONFIG_H
6936 EOF
6937
6938 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
6939
6940 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
6941
6942 cp_if_changed $TMPH libavutil/avconfig.h
6943
6944 # generate the lists of enabled components
6945 print_enabled_components(){
6946     file=$1
6947     struct_name=$2
6948     name=$3
6949     shift 3
6950     echo "static const $struct_name *$name[] = {" > $TMPH
6951     for c in $*; do
6952         enabled $c && printf "    &ff_%s,\n" $c >> $TMPH
6953     done
6954     echo "    NULL };" >> $TMPH
6955     cp_if_changed $TMPH $file
6956 }
6957
6958 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
6959 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
6960
6961 if test -n "$WARNINGS"; then
6962     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
6963     enabled fatal_warnings && exit 1
6964 fi
6965
6966 # Settings for pkg-config files
6967
6968 cat > ffbuild/config.sh <<EOF
6969 # Automatically generated by configure - do not modify!
6970 shared=$shared
6971 build_suffix=$build_suffix
6972 prefix=$prefix
6973 libdir=$libdir
6974 incdir=$incdir
6975 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
6976 source_path=${source_path}
6977 LIBPREF=${LIBPREF}
6978 LIBSUF=${LIBSUF}
6979
6980 extralibs_avutil="$LIBRT $LIBM"
6981 extralibs_avcodec="$extralibs"
6982 extralibs_avformat="$extralibs"
6983 extralibs_avdevice="$extralibs"
6984 extralibs_avfilter="$extralibs"
6985 extralibs_avresample="$LIBM"
6986 extralibs_postproc=""
6987 extralibs_swscale="$LIBM"
6988 extralibs_swresample="$LIBM $LIBSOXR"
6989 EOF
6990
6991 for lib in $LIBRARY_LIST; do
6992     lib_deps="$(eval echo \$${lib}_deps)"
6993     echo ${lib}_deps=\"$lib_deps\" >> ffbuild/config.sh
6994 done