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-libndi_newtek   enable Newteck NDI I/O support [no]
 281   --enable-mediacodec      enable Android MediaCodec support [no]
 282   --enable-libmysofa       enable libmysofa, needed for sofalizer filter [no]
 283   --enable-openal          enable OpenAL 1.1 capture support [no]
 284   --enable-opencl          enable OpenCL code
 285   --enable-opengl          enable OpenGL rendering [no]
 286   --enable-openssl         enable openssl, needed for https support
 287                            if gnutls is not used [no]
 288   --disable-schannel       disable SChannel SSP, needed for TLS support on
 289                            Windows if openssl and gnutls are not used [autodetect]
 290   --disable-sdl2           disable sdl2 [autodetect]
 291   --disable-securetransport disable Secure Transport, needed for TLS support
 292                            on OSX if openssl and gnutls are not used [autodetect]
 293   --disable-xlib           disable xlib [autodetect]
 294   --disable-zlib           disable zlib [autodetect]
 295
 296   The following libraries provide various hardware acceleration features:
 297   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
 298   --disable-cuda           disable dynamically linked Nvidia CUDA code [autodetect]
 299   --enable-cuda-sdk        enable CUDA features that require the CUDA SDK [no]
 300   --disable-cuvid          disable Nvidia CUVID support [autodetect]
 301   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
 302   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
 303   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
 304   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
 305   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
 306   --disable-nvenc          disable Nvidia video encoding code [autodetect]
 307   --enable-omx             enable OpenMAX IL code [no]
 308   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
 309   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
 310   --disable-vda            disable Apple Video Decode Acceleration code [autodetect]
 311   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
 312   --disable-videotoolbox   disable VideoToolbox code [autodetect]
 313
 314 Toolchain options:
 315   --arch=ARCH              select architecture [$arch]
 316   --cpu=CPU                select the minimum required CPU (affects
 317                            instruction selection, may crash on older CPUs)
 318   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 319   --progs-suffix=SUFFIX    program name suffix []
 320   --enable-cross-compile   assume a cross-compiler is used
 321   --sysroot=PATH           root of cross-build tree
 322   --sysinclude=PATH        location of cross-build system headers
 323   --target-os=OS           compiler targets OS [$target_os]
 324   --target-exec=CMD        command to run executables on target
 325   --target-path=DIR        path to view of build directory on target
 326   --target-samples=DIR     path to samples directory on target
 327   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 328   --toolchain=NAME         set tool defaults according to NAME
 329   --nm=NM                  use nm tool NM [$nm_default]
 330   --ar=AR                  use archive tool AR [$ar_default]
 331   --as=AS                  use assembler AS [$as_default]
 332   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
 333   --strip=STRIP            use strip tool STRIP [$strip_default]
 334   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 335   --x86asmexe=EXE          use nasm-compatible assembler EXE [$x86asmexe_default]
 336   --cc=CC                  use C compiler CC [$cc_default]
 337   --cxx=CXX                use C compiler CXX [$cxx_default]
 338   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 339   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 340   --nvcc=NVCC              use Nvidia CUDA compiler NVCC [$nvcc_default]
 341   --ld=LD                  use linker LD [$ld_default]
 342   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 343   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 344   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 345   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 346   --host-cc=HOSTCC         use host C compiler HOSTCC
 347   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 348   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 349   --host-ld=HOSTLD         use host linker HOSTLD
 350   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 351   --host-libs=HLIBS        use libs HLIBS when linking for host
 352   --host-os=OS             compiler host OS [$target_os]
 353   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 354   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 355   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 356   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 357   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 358   --extra-ldlibflags=ELDFLAGS add ELDFLAGS to LDLIBFLAGS [$LDLIBFLAGS]
 359   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 360   --extra-version=STRING   version string suffix []
 361   --optflags=OPTFLAGS      override optimization-related compiler flags
 362   --nvccflags=NVCCFLAGS    override nvcc flags [$nvccflags_default]
 363   --build-suffix=SUFFIX    library name suffix []
 364   --enable-pic             build position-independent code
 365   --enable-thumb           compile for Thumb instruction set
 366   --enable-lto             use link-time optimization
 367   --env="ENV=override"     override the environment variables
 368
 369 Advanced options (experts only):
 370   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 371   --custom-allocator=NAME  use a supported custom allocator
 372   --disable-symver         disable symbol versioning
 373   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 374   --disable-safe-bitstream-reader
 375                            disable buffer boundary checking in bitreaders
 376                            (faster, but may crash)
 377   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 378
 379 Optimization options (experts only):
 380   --disable-asm            disable all assembly optimizations
 381   --disable-altivec        disable AltiVec optimizations
 382   --disable-vsx            disable VSX optimizations
 383   --disable-power8         disable POWER8 optimizations
 384   --disable-amd3dnow       disable 3DNow! optimizations
 385   --disable-amd3dnowext    disable 3DNow! extended optimizations
 386   --disable-mmx            disable MMX optimizations
 387   --disable-mmxext         disable MMXEXT optimizations
 388   --disable-sse            disable SSE optimizations
 389   --disable-sse2           disable SSE2 optimizations
 390   --disable-sse3           disable SSE3 optimizations
 391   --disable-ssse3          disable SSSE3 optimizations
 392   --disable-sse4           disable SSE4 optimizations
 393   --disable-sse42          disable SSE4.2 optimizations
 394   --disable-avx            disable AVX optimizations
 395   --disable-xop            disable XOP optimizations
 396   --disable-fma3           disable FMA3 optimizations
 397   --disable-fma4           disable FMA4 optimizations
 398   --disable-avx2           disable AVX2 optimizations
 399   --disable-aesni          disable AESNI optimizations
 400   --disable-armv5te        disable armv5te optimizations
 401   --disable-armv6          disable armv6 optimizations
 402   --disable-armv6t2        disable armv6t2 optimizations
 403   --disable-vfp            disable VFP optimizations
 404   --disable-neon           disable NEON optimizations
 405   --disable-inline-asm     disable use of inline assembly
 406   --disable-x86asm         disable use of standalone x86 assembly
 407   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
 408   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 409   --disable-msa            disable MSA optimizations
 410   --disable-mipsfpu        disable floating point MIPS optimizations
 411   --disable-mmi            disable Loongson SIMD optimizations
 412   --disable-fast-unaligned consider unaligned accesses slow
 413
 414 Developer options (useful when working on FFmpeg itself):
 415   --disable-debug          disable debugging symbols
 416   --enable-debug=LEVEL     set the debug level [$debuglevel]
 417   --disable-optimizations  disable compiler optimizations
 418   --enable-extra-warnings  enable more compiler warnings
 419   --disable-stripping      disable stripping of executables and shared libraries
 420   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 421                            2 causes a slowdown at runtime.
 422   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 423   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 424                            leaks and errors, using the specified valgrind binary.
 425                            Cannot be combined with --target-exec
 426   --enable-ftrapv          Trap arithmetic overflows
 427   --samples=PATH           location of test samples for FATE, if not set use
 428                            \$FATE_SAMPLES at make invocation time.
 429   --enable-neon-clobber-test check NEON registers for clobbering (should be
 430                            used only for debugging purposes)
 431   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 432                            should be used only for debugging purposes)
 433   --enable-random          randomly enable/disable components
 434   --disable-random
 435   --enable-random=LIST     randomly enable/disable specific components or
 436   --disable-random=LIST    component groups. LIST is a comma-separated list
 437                            of NAME[:PROB] entries where NAME is a component
 438                            (group) and PROB the probability associated with
 439                            NAME (default 0.5).
 440   --random-seed=VALUE      seed value for --enable/disable-random
 441   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 442                            (only applies to --disable-optimizations builds)
 443   --enable-osfuzz          Enable building fuzzer tool
 444   --libfuzzer=PATH         path to libfuzzer
 445   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
 446                            in the name) of tests whose result is ignored
 447
 448 NOTE: Object files are built at the place where configure is launched.
 449 EOF
 450   exit 0
 451 }
 452
 453 quotes='""'
 454 if test -t 1 && which tput >/dev/null 2>&1; then
 455     ncolors=$(tput colors)
 456     if test -n "$ncolors" && test $ncolors -ge 8; then
 457         bold_color=$(tput bold)
 458         warn_color=$(tput setaf 3)
 459         error_color=$(tput setaf 1)
 460         reset_color=$(tput sgr0)
 461     fi
 462     # 72 used instead of 80 since that's the default of pr
 463     ncols=$(tput cols)
 464 fi
 465 : ${ncols:=72}
 466
 467 log(){
 468     echo "$@" >> $logfile
 469 }
 470
 471 log_file(){
 472     log BEGIN $1
 473     pr -n -t $1 >> $logfile
 474     log END $1
 475 }
 476
 477 warn(){
 478     log "WARNING: $*"
 479     WARNINGS="${WARNINGS}WARNING: $*\n"
 480 }
 481
 482 die(){
 483     log "$@"
 484     echo "$error_color$bold_color$@$reset_color"
 485     cat <<EOF
 486
 487 If you think configure made a mistake, make sure you are using the latest
 488 version from Git.  If the latest version fails, report the problem to the
 489 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 490 EOF
 491     if disabled logging; then
 492         cat <<EOF
 493 Rerun configure with logging enabled (do not use --disable-logging), and
 494 include the log this produces with your report.
 495 EOF
 496     else
 497         cat <<EOF
 498 Include the log file "$logfile" produced by configure as this will help
 499 solve the problem.
 500 EOF
 501     fi
 502     exit 1
 503 }
 504
 505 # Avoid locale weirdness, besides we really just want to translate ASCII.
 506 toupper(){
 507     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 508 }
 509
 510 tolower(){
 511     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 512 }
 513
 514 c_escape(){
 515     echo "$*" | sed 's/["\\]/\\\0/g'
 516 }
 517
 518 sh_quote(){
 519     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 520     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 521     echo "$v"
 522 }
 523
 524 cleanws(){
 525     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 526 }
 527
 528 filter(){
 529     pat=$1
 530     shift
 531     for v; do
 532         eval "case $v in $pat) printf '%s ' $v ;; esac"
 533     done
 534 }
 535
 536 filter_out(){
 537     pat=$1
 538     shift
 539     for v; do
 540         eval "case $v in $pat) ;; *) printf '%s ' $v ;; esac"
 541     done
 542 }
 543
 544 map(){
 545     m=$1
 546     shift
 547     for v; do eval $m; done
 548 }
 549
 550 add_suffix(){
 551     suffix=$1
 552     shift
 553     for v; do echo ${v}${suffix}; done
 554 }
 555
 556 set_all(){
 557     value=$1
 558     shift
 559     for var in $*; do
 560         eval $var=$value
 561     done
 562 }
 563
 564 set_weak(){
 565     value=$1
 566     shift
 567     for var; do
 568         eval : \${$var:=$value}
 569     done
 570 }
 571
 572 sanitize_var_name(){
 573     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 574 }
 575
 576 set_safe(){
 577     var=$1
 578     shift
 579     eval $(sanitize_var_name "$var")='$*'
 580 }
 581
 582 get_safe(){
 583     eval echo \$$(sanitize_var_name "$1")
 584 }
 585
 586 pushvar(){
 587     for pvar in $*; do
 588         eval level=\${${pvar}_level:=0}
 589         eval ${pvar}_${level}="\$$pvar"
 590         eval ${pvar}_level=$(($level+1))
 591     done
 592 }
 593
 594 popvar(){
 595     for pvar in $*; do
 596         eval level=\${${pvar}_level:-0}
 597         test $level = 0 && continue
 598         eval level=$(($level-1))
 599         eval $pvar="\${${pvar}_${level}}"
 600         eval ${pvar}_level=$level
 601         eval unset ${pvar}_${level}
 602     done
 603 }
 604
 605 request(){
 606     for var in $*; do
 607         eval ${var}_requested=yes
 608         eval $var=
 609     done
 610 }
 611
 612 enable(){
 613     set_all yes $*
 614 }
 615
 616 disable(){
 617     set_all no $*
 618 }
 619
 620 enable_weak(){
 621     set_weak yes $*
 622 }
 623
 624 disable_weak(){
 625     set_weak no $*
 626 }
 627
 628 enable_safe(){
 629     for var; do
 630         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 631     done
 632 }
 633
 634 disable_safe(){
 635     for var; do
 636         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 637     done
 638 }
 639
 640 do_enable_deep(){
 641     for var; do
 642         enabled $var && continue
 643         eval sel="\$${var}_select"
 644         eval sgs="\$${var}_suggest"
 645         pushvar var sgs
 646         enable_deep $sel
 647         popvar sgs
 648         enable_deep_weak $sgs
 649         popvar var
 650     done
 651 }
 652
 653 enable_deep(){
 654     do_enable_deep $*
 655     enable $*
 656 }
 657
 658 enable_deep_weak(){
 659     for var; do
 660         disabled $var && continue
 661         pushvar var
 662         do_enable_deep $var
 663         popvar var
 664         enable_weak $var
 665     done
 666 }
 667
 668 requested(){
 669     test "${1#!}" = "$1" && op='=' || op=!=
 670     eval test "x\$${1#!}_requested" $op "xyes"
 671 }
 672
 673 enabled(){
 674     test "${1#!}" = "$1" && op='=' || op=!=
 675     eval test "x\$${1#!}" $op "xyes"
 676 }
 677
 678 disabled(){
 679     test "${1#!}" = "$1" && op='=' || op=!=
 680     eval test "x\$${1#!}" $op "xno"
 681 }
 682
 683 enabled_all(){
 684     for opt; do
 685         enabled $opt || return 1
 686     done
 687 }
 688
 689 disabled_all(){
 690     for opt; do
 691         disabled $opt || return 1
 692     done
 693 }
 694
 695 enabled_any(){
 696     for opt; do
 697         enabled $opt && return 0
 698     done
 699 }
 700
 701 disabled_any(){
 702     for opt; do
 703         disabled $opt && return 0
 704     done
 705     return 1
 706 }
 707
 708 set_default(){
 709     for opt; do
 710         eval : \${$opt:=\$${opt}_default}
 711     done
 712 }
 713
 714 is_in(){
 715     value=$1
 716     shift
 717     for var in $*; do
 718         [ $var = $value ] && return 0
 719     done
 720     return 1
 721 }
 722
 723 do_check_deps(){
 724     for cfg; do
 725         cfg="${cfg#!}"
 726         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 727         disabled ${cfg}_checking && continue
 728         enable ${cfg}_checking
 729         append allopts $cfg
 730
 731         eval dep_all="\$${cfg}_deps"
 732         eval dep_any="\$${cfg}_deps_any"
 733         eval dep_sel="\$${cfg}_select"
 734         eval dep_sgs="\$${cfg}_suggest"
 735         eval dep_ifa="\$${cfg}_if"
 736         eval dep_ifn="\$${cfg}_if_any"
 737
 738         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 739         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
 740         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 741
 742         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 743         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 744         enabled_all  $dep_all || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not all dependencies are satisfied: $dep_all"; }
 745         enabled_any  $dep_any || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not any dependency is satisfied: $dep_any"; }
 746         disabled_any $dep_sel && { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some selected dependency is unsatisfied: $dep_sel"; }
 747
 748         if enabled $cfg; then
 749             enable_deep $dep_sel
 750             enable_deep_weak $dep_sgs
 751         fi
 752
 753         disable ${cfg}_checking
 754     done
 755 }
 756
 757 check_deps(){
 758     unset allopts
 759
 760     do_check_deps "$@"
 761
 762     for cfg in $allopts; do
 763         enabled $cfg || continue
 764         eval dep_extralibs="\$${cfg}_extralibs"
 765         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
 766     done
 767 }
 768
 769 print_config(){
 770     pfx=$1
 771     files=$2
 772     shift 2
 773     map 'eval echo "$v \${$v:-no}"' "$@" |
 774     awk "BEGIN { split(\"$files\", files) }
 775         {
 776             c = \"$pfx\" toupper(\$1);
 777             v = \$2;
 778             sub(/yes/, 1, v);
 779             sub(/no/,  0, v);
 780             for (f in files) {
 781                 file = files[f];
 782                 if (file ~ /\\.h\$/) {
 783                     printf(\"#define %s %d\\n\", c, v) >>file;
 784                 } else if (file ~ /\\.asm\$/) {
 785                     printf(\"%%define %s %d\\n\", c, v) >>file;
 786                 } else if (file ~ /\\.mak\$/) {
 787                     n = -v ? \"\" : \"!\";
 788                     printf(\"%s%s=yes\\n\", n, c) >>file;
 789                 } else if (file ~ /\\.texi\$/) {
 790                     pre = -v ? \"\" : \"@c \";
 791                     yesno = \$2;
 792                     c2 = tolower(c);
 793                     gsub(/_/, \"-\", c2);
 794                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 795                 }
 796             }
 797         }"
 798 }
 799
 800 print_enabled(){
 801     suf=$1
 802     shift
 803     for v; do
 804         enabled $v && printf "%s\n" ${v%$suf}
 805     done
 806 }
 807
 808 append(){
 809     var=$1
 810     shift
 811     eval "$var=\"\$$var $*\""
 812 }
 813
 814 prepend(){
 815     var=$1
 816     shift
 817     eval "$var=\"$* \$$var\""
 818 }
 819
 820 unique(){
 821     var=$1
 822     uniq_list=""
 823     for tok in $(eval echo \$$var); do
 824         uniq_list="$(filter_out $tok $uniq_list) $tok"
 825     done
 826     eval "$var=\"${uniq_list}\""
 827 }
 828
 829 add_cppflags(){
 830     append CPPFLAGS "$@"
 831 }
 832
 833 add_cflags(){
 834     append CFLAGS $($cflags_filter "$@")
 835 }
 836
 837 add_cflags_headers(){
 838     append CFLAGS_HEADERS $($cflags_filter "$@")
 839 }
 840
 841 add_cxxflags(){
 842     append CXXFLAGS $($cflags_filter "$@")
 843 }
 844
 845 add_asflags(){
 846     append ASFLAGS $($asflags_filter "$@")
 847 }
 848
 849 add_objcflags(){
 850     append OBJCFLAGS $($objcflags_filter "$@")
 851 }
 852
 853 add_ldflags(){
 854     append LDFLAGS $($ldflags_filter "$@")
 855 }
 856
 857 add_ldexeflags(){
 858     append LDEXEFLAGS $($ldflags_filter "$@")
 859 }
 860
 861 add_ldlibflags(){
 862     append LDLIBFLAGS $($ldflags_filter "$@")
 863 }
 864
 865 add_stripflags(){
 866     append ASMSTRIPFLAGS "$@"
 867 }
 868
 869 add_extralibs(){
 870     prepend extralibs $($ldflags_filter "$@")
 871 }
 872
 873 add_host_cppflags(){
 874     append host_cppflags "$@"
 875 }
 876
 877 add_host_cflags(){
 878     append host_cflags $($host_cflags_filter "$@")
 879 }
 880
 881 add_host_ldflags(){
 882     append host_ldflags $($host_ldflags_filter "$@")
 883 }
 884
 885 add_compat(){
 886     append compat_objs $1
 887     shift
 888     map 'add_cppflags -D$v' "$@"
 889 }
 890
 891 check_cmd(){
 892     log "$@"
 893     "$@" >> $logfile 2>&1
 894 }
 895
 896 check_stat(){
 897     log check_stat "$@"
 898     stat "$1" >> $logfile 2>&1
 899 }
 900
 901 cc_o(){
 902     eval printf '%s\\n' $CC_O
 903 }
 904
 905 cc_e(){
 906     eval printf '%s\\n' $CC_E
 907 }
 908
 909 check_cc(){
 910     log check_cc "$@"
 911     cat > $TMPC
 912     log_file $TMPC
 913     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 914 }
 915
 916 check_cxx(){
 917     log check_cxx "$@"
 918     cat > $TMPCPP
 919     log_file $TMPCPP
 920     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 921 }
 922
 923 check_objcc(){
 924     log check_objcc "$@"
 925     cat > $TMPM
 926     log_file $TMPM
 927     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
 928 }
 929
 930 check_cpp(){
 931     log check_cpp "$@"
 932     cat > $TMPC
 933     log_file $TMPC
 934     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 935 }
 936
 937 as_o(){
 938     eval printf '%s\\n' $AS_O
 939 }
 940
 941 check_as(){
 942     log check_as "$@"
 943     cat > $TMPS
 944     log_file $TMPS
 945     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 946 }
 947
 948 check_inline_asm(){
 949     log check_inline_asm "$@"
 950     name="$1"
 951     code="$2"
 952     shift 2
 953     disable $name
 954     check_cc "$@" <<EOF && enable $name
 955 void foo(void){ __asm__ volatile($code); }
 956 EOF
 957 }
 958
 959 check_inline_asm_flags(){
 960     log check_inline_asm_flags "$@"
 961     name="$1"
 962     code="$2"
 963     flags=''
 964     shift 2
 965     while [ "$1" != "" ]; do
 966       append flags $1
 967       shift
 968     done;
 969     disable $name
 970     cat > $TMPC <<EOF
 971 void foo(void){ __asm__ volatile($code); }
 972 EOF
 973     log_file $TMPC
 974     check_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
 975     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
 976 }
 977
 978 check_insn(){
 979     log check_insn "$@"
 980     check_inline_asm ${1}_inline "\"$2\""
 981     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 982 }
 983
 984 check_x86asm(){
 985     log check_x86asm "$@"
 986     echo "$1" > $TMPS
 987     log_file $TMPS
 988     shift 1
 989     check_cmd $x86asmexe $X86ASMFLAGS -Werror "$@" -o $TMPO $TMPS
 990 }
 991
 992 ld_o(){
 993     eval printf '%s\\n' $LD_O
 994 }
 995
 996 check_ld(){
 997     log check_ld "$@"
 998     type=$1
 999     shift 1
1000     flags=$(filter_out '-l*|*.so' $@)
1001     libs=$(filter '-l*|*.so' $@)
1002     check_$type $($cflags_filter $flags) || return
1003     flags=$($ldflags_filter $flags)
1004     libs=$($ldflags_filter $libs)
1005     check_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1006 }
1007
1008 print_include(){
1009     hdr=$1
1010     test "${hdr%.h}" = "${hdr}" &&
1011         echo "#include $hdr"    ||
1012         echo "#include <$hdr>"
1013 }
1014
1015 check_code(){
1016     log check_code "$@"
1017     check=$1
1018     headers=$2
1019     code=$3
1020     shift 3
1021     {
1022         for hdr in $headers; do
1023             print_include $hdr
1024         done
1025         echo "int main(void) { $code; return 0; }"
1026     } | check_$check "$@"
1027 }
1028
1029 check_cppflags(){
1030     log check_cppflags "$@"
1031     check_cpp "$@" <<EOF && append CPPFLAGS "$@"
1032 int x;
1033 EOF
1034 }
1035
1036 test_cflags(){
1037     log test_cflags "$@"
1038     set -- $($cflags_filter "$@")
1039     check_cc "$@" <<EOF
1040 int x;
1041 EOF
1042 }
1043
1044 check_cflags(){
1045     log check_cflags "$@"
1046     test_cflags "$@" && add_cflags "$@"
1047 }
1048
1049 check_cxxflags(){
1050     log check_cxxflags "$@"
1051     set -- $($cflags_filter "$@")
1052     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
1053 int x;
1054 EOF
1055 }
1056
1057 test_objcflags(){
1058     log test_objcflags "$@"
1059     set -- $($objcflags_filter "$@")
1060     check_objcc "$@" <<EOF
1061 int x;
1062 EOF
1063 }
1064
1065 check_objcflags(){
1066     log check_objcflags "$@"
1067     test_objcflags "$@" && add_objcflags "$@"
1068 }
1069
1070 test_ldflags(){
1071     log test_ldflags "$@"
1072     check_ld "cc" "$@" <<EOF
1073 int main(void){ return 0; }
1074 EOF
1075 }
1076
1077 check_ldflags(){
1078     log check_ldflags "$@"
1079     test_ldflags "$@" && add_ldflags "$@"
1080 }
1081
1082 test_stripflags(){
1083     log test_stripflags "$@"
1084     # call check_cc to get a fresh TMPO
1085     check_cc <<EOF
1086 int main(void) { return 0; }
1087 EOF
1088     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1089 }
1090
1091 check_stripflags(){
1092     log check_stripflags "$@"
1093     test_stripflags "$@" && add_stripflags "$@"
1094 }
1095
1096 check_header(){
1097     log check_header "$@"
1098     header=$1
1099     shift
1100     disable_safe $header
1101     check_cpp "$@" <<EOF && enable_safe $header
1102 #include <$header>
1103 int x;
1104 EOF
1105 }
1106
1107 check_header_objcc(){
1108     log check_header_objcc "$@"
1109     rm -f -- "$TMPO"
1110     header=$1
1111     shift
1112     disable_safe $header
1113     {
1114        echo "#include <$header>"
1115        echo "int main(void) { return 0; }"
1116     } | check_objcc && check_stat "$TMPO" && enable_safe $headers
1117 }
1118
1119 check_func(){
1120     log check_func "$@"
1121     func=$1
1122     shift
1123     disable $func
1124     check_ld "cc" "$@" <<EOF && enable $func
1125 extern int $func();
1126 int main(void){ $func(); }
1127 EOF
1128 }
1129
1130 check_complexfunc(){
1131     log check_complexfunc "$@"
1132     func=$1
1133     narg=$2
1134     shift 2
1135     test $narg = 2 && args="f, g" || args="f * I"
1136     disable $func
1137     check_ld "cc" "$@" <<EOF && enable $func
1138 #include <complex.h>
1139 #include <math.h>
1140 float foo(complex float f, complex float g) { return $func($args); }
1141 int main(void){ return (int) foo; }
1142 EOF
1143 }
1144
1145 check_mathfunc(){
1146     log check_mathfunc "$@"
1147     func=$1
1148     narg=$2
1149     shift 2
1150     test $narg = 2 && args="f, g" || args="f"
1151     disable $func
1152     check_ld "cc" "$@" <<EOF && enable $func
1153 #include <math.h>
1154 float foo(float f, float g) { return $func($args); }
1155 int main(void){ return (int) foo; }
1156 EOF
1157 }
1158
1159 check_func_headers(){
1160     log check_func_headers "$@"
1161     headers=$1
1162     funcs=$2
1163     shift 2
1164     {
1165         for hdr in $headers; do
1166             print_include $hdr
1167         done
1168         echo "#include <stdint.h>"
1169         for func in $funcs; do
1170             echo "long check_$func(void) { return (long) $func; }"
1171         done
1172         echo "int main(void) { int ret = 0;"
1173         # LTO could optimize out the test functions without this
1174         for func in $funcs; do
1175             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1176         done
1177         echo "return ret; }"
1178     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1179 }
1180
1181 check_class_headers_cpp(){
1182     log check_class_headers_cpp "$@"
1183     headers=$1
1184     classes=$2
1185     shift 2
1186     {
1187         for hdr in $headers; do
1188             echo "#include <$hdr>"
1189         done
1190         echo "int main(void) { "
1191         i=1
1192         for class in $classes; do
1193             echo "$class obj$i;"
1194             i=$(expr $i + 1)
1195         done
1196         echo "return 0; }"
1197     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1198 }
1199
1200 check_cpp_condition(){
1201     log check_cpp_condition "$@"
1202     header=$1
1203     condition=$2
1204     shift 2
1205     check_cpp "$@" <<EOF
1206 #include <$header>
1207 #if !($condition)
1208 #error "unsatisfied condition: $condition"
1209 #endif
1210 EOF
1211 }
1212
1213 test_cflags_cc(){
1214     log test_cflags_cc "$@"
1215     flags=$1
1216     header=$2
1217     condition=$3
1218     shift 3
1219     set -- $($cflags_filter "$flags")
1220     check_cc "$@" <<EOF
1221 #include <$header>
1222 #if !($condition)
1223 #error "unsatisfied condition: $condition"
1224 #endif
1225 EOF
1226 }
1227
1228 check_lib(){
1229     log check_lib "$@"
1230     name="$1"
1231     headers="$2"
1232     funcs="$3"
1233     shift 3
1234     disable $name
1235     check_func_headers "$headers" "$funcs" "$@" &&
1236         enable $name && add_extralibs "$@"
1237 }
1238
1239 check_lib_cpp(){
1240     log check_lib_cpp "$@"
1241     headers="$1"
1242     classes="$2"
1243     shift 2
1244     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1245 }
1246
1247 check_pkg_config(){
1248     log check_pkg_config "$@"
1249     pkg_version="$1"
1250     pkg="${1%% *}"
1251     headers="$2"
1252     funcs="$3"
1253     shift 3
1254     check_cmd $pkg_config --exists --print-errors $pkg_version || return
1255     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1256     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1257     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1258         set_safe "${pkg}_cflags"    $pkg_cflags &&
1259         set_safe "${pkg}_extralibs" $pkg_libs
1260 }
1261
1262 check_exec(){
1263     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1264 }
1265
1266 check_exec_crash(){
1267     log check_exec_crash "$@"
1268     code=$(cat)
1269
1270     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1271     # are safe but may not be available everywhere.  Thus we use
1272     # raise(SIGTERM) instead.  The check is run in a subshell so we
1273     # can redirect the "Terminated" message from the shell.  SIGBUS
1274     # is not defined by standard C so it is used conditionally.
1275
1276     (check_exec "$@") >> $logfile 2>&1 <<EOF
1277 #include <signal.h>
1278 static void sighandler(int sig){
1279     raise(SIGTERM);
1280 }
1281 int foo(void){
1282     $code
1283 }
1284 int (*func_ptr)(void) = foo;
1285 int main(void){
1286     signal(SIGILL, sighandler);
1287     signal(SIGFPE, sighandler);
1288     signal(SIGSEGV, sighandler);
1289 #ifdef SIGBUS
1290     signal(SIGBUS, sighandler);
1291 #endif
1292     return func_ptr();
1293 }
1294 EOF
1295 }
1296
1297 check_type(){
1298     log check_type "$@"
1299     headers=$1
1300     type=$2
1301     shift 2
1302     disable_safe "$type"
1303     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1304 }
1305
1306 check_struct(){
1307     log check_struct "$@"
1308     headers=$1
1309     struct=$2
1310     member=$3
1311     shift 3
1312     disable_safe "${struct}_${member}"
1313     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1314         enable_safe "${struct}_${member}"
1315 }
1316
1317 check_builtin(){
1318     log check_builtin "$@"
1319     name=$1
1320     headers=$2
1321     builtin=$3
1322     shift 3
1323     disable "$name"
1324     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1325 }
1326
1327 check_compile_assert(){
1328     log check_compile_assert "$@"
1329     name=$1
1330     headers=$2
1331     condition=$3
1332     shift 3
1333     disable "$name"
1334     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1335 }
1336
1337 require(){
1338     log require "$@"
1339     name_version="$1"
1340     name="${1%% *}"
1341     headers="$2"
1342     func="$3"
1343     shift 3
1344     check_lib $name "$headers" $func "$@" || die "ERROR: $name_version not found"
1345 }
1346
1347 require_cpp(){
1348     name="$1"
1349     headers="$2"
1350     classes="$3"
1351     shift 3
1352     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1353 }
1354
1355 use_pkg_config(){
1356     log use_pkg_config "$@"
1357     pkg="$1"
1358     check_pkg_config "$@" || return 1
1359     add_cflags    $(get_safe "${pkg}_cflags")
1360     add_extralibs $(get_safe "${pkg}_extralibs")
1361 }
1362
1363 require_pkg_config(){
1364     use_pkg_config "$@" || die "ERROR: $pkg not found using pkg-config$pkg_config_fail_message"
1365 }
1366
1367 hostcc_e(){
1368     eval printf '%s\\n' $HOSTCC_E
1369 }
1370
1371 hostcc_o(){
1372     eval printf '%s\\n' $HOSTCC_O
1373 }
1374
1375 check_host_cc(){
1376     log check_host_cc "$@"
1377     cat > $TMPC
1378     log_file $TMPC
1379     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1380 }
1381
1382 check_host_cpp(){
1383     log check_host_cpp "$@"
1384     cat > $TMPC
1385     log_file $TMPC
1386     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1387 }
1388
1389 check_host_cppflags(){
1390     log check_host_cppflags "$@"
1391     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1392 int x;
1393 EOF
1394 }
1395
1396 check_host_cflags(){
1397     log check_host_cflags "$@"
1398     set -- $($host_cflags_filter "$@")
1399     check_host_cc "$@" <<EOF && append host_cflags "$@"
1400 int x;
1401 EOF
1402 }
1403
1404 check_host_cpp_condition(){
1405     log check_host_cpp_condition "$@"
1406     header=$1
1407     condition=$2
1408     shift 2
1409     check_host_cpp "$@" <<EOF
1410 #include <$header>
1411 #if !($condition)
1412 #error "unsatisfied condition: $condition"
1413 #endif
1414 EOF
1415 }
1416
1417 cp_if_changed(){
1418     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1419     mkdir -p "$(dirname $2)"
1420     cp -f "$1" "$2"
1421 }
1422
1423 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1424 # system-dependent things.
1425
1426 AVCODEC_COMPONENTS="
1427     bsfs
1428     decoders
1429     encoders
1430     hwaccels
1431     parsers
1432 "
1433
1434 AVDEVICE_COMPONENTS="
1435     indevs
1436     outdevs
1437 "
1438 AVFILTER_COMPONENTS="
1439     filters
1440 "
1441 AVFORMAT_COMPONENTS="
1442     demuxers
1443     muxers
1444     protocols
1445 "
1446
1447 AVRESAMPLE_COMPONENTS=""
1448 AVUTIL_COMPONENTS=""
1449
1450 COMPONENT_LIST="
1451     $AVCODEC_COMPONENTS
1452     $AVDEVICE_COMPONENTS
1453     $AVFILTER_COMPONENTS
1454     $AVFORMAT_COMPONENTS
1455     $AVRESAMPLE_COMPONENTS
1456     $AVUTIL_COMPONENTS
1457 "
1458
1459 EXAMPLE_LIST="
1460     avio_dir_cmd_example
1461     avio_reading_example
1462     decode_audio_example
1463     decode_video_example
1464     demuxing_decoding_example
1465     encode_audio_example
1466     encode_video_example
1467     extract_mvs_example
1468     filter_audio_example
1469     filtering_audio_example
1470     filtering_video_example
1471     http_multiclient_example
1472     hw_decode_example
1473     metadata_example
1474     muxing_example
1475     qsvdec_example
1476     remuxing_example
1477     resampling_audio_example
1478     scaling_video_example
1479     transcode_aac_example
1480     transcoding_example
1481 "
1482 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1483     bzlib
1484     iconv
1485     libxcb
1486     libxcb_shm
1487     libxcb_shape
1488     libxcb_xfixes
1489     lzma
1490     schannel
1491     sdl2
1492     securetransport
1493     xlib
1494     zlib
1495 "
1496
1497 EXTERNAL_LIBRARY_GPL_LIST="
1498     avisynth
1499     frei0r
1500     libcdio
1501     librubberband
1502     libvidstab
1503     libx264
1504     libx265
1505     libxavs
1506     libxvid
1507 "
1508
1509 EXTERNAL_LIBRARY_NONFREE_LIST="
1510     decklink
1511     libndi_newtek
1512     libfdk_aac
1513     openssl
1514 "
1515
1516 EXTERNAL_LIBRARY_VERSION3_LIST="
1517     gmp
1518     libopencore_amrnb
1519     libopencore_amrwb
1520     libvo_amrwbenc
1521 "
1522
1523 EXTERNAL_LIBRARY_GPLV3_LIST="
1524     libsmbclient
1525 "
1526
1527 EXTERNAL_LIBRARY_LIST="
1528     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1529     $EXTERNAL_LIBRARY_GPL_LIST
1530     $EXTERNAL_LIBRARY_NONFREE_LIST
1531     $EXTERNAL_LIBRARY_VERSION3_LIST
1532     $EXTERNAL_LIBRARY_GPLV3_LIST
1533     chromaprint
1534     gcrypt
1535     gnutls
1536     jni
1537     ladspa
1538     libass
1539     libbluray
1540     libbs2b
1541     libcaca
1542     libcelt
1543     libdc1394
1544     libflite
1545     libfontconfig
1546     libfreetype
1547     libfribidi
1548     libgme
1549     libgsm
1550     libiec61883
1551     libilbc
1552     libkvazaar
1553     libmodplug
1554     libmp3lame
1555     libmysofa
1556     libopencv
1557     libopenh264
1558     libopenjpeg
1559     libopenmpt
1560     libopus
1561     libpulse
1562     librsvg
1563     librtmp
1564     libshine
1565     libsmbclient
1566     libsnappy
1567     libsoxr
1568     libspeex
1569     libssh
1570     libtesseract
1571     libtheora
1572     libtwolame
1573     libv4l2
1574     libvmaf
1575     libvorbis
1576     libvpx
1577     libwavpack
1578     libwebp
1579     libzimg
1580     libzmq
1581     libzvbi
1582     mediacodec
1583     openal
1584     opencl
1585     opengl
1586     videotoolbox
1587 "
1588 HWACCEL_AUTODETECT_LIBRARY_LIST="
1589     audiotoolbox
1590     crystalhd
1591     cuda
1592     cuvid
1593     d3d11va
1594     dxva2
1595     nvenc
1596     vaapi
1597     vda
1598     vdpau
1599     videotoolbox_hwaccel
1600     xvmc
1601 "
1602
1603 HWACCEL_LIBRARY_NONFREE_LIST="
1604     cuda_sdk
1605     libnpp
1606 "
1607
1608 HWACCEL_LIBRARY_LIST="
1609     $HWACCEL_AUTODETECT_LIBRARY_LIST
1610     $HWACCEL_LIBRARY_NONFREE_LIST
1611     libmfx
1612     mmal
1613     omx
1614 "
1615
1616 DOCUMENT_LIST="
1617     doc
1618     htmlpages
1619     manpages
1620     podpages
1621     txtpages
1622 "
1623
1624 FEATURE_LIST="
1625     ftrapv
1626     gray
1627     hardcoded_tables
1628     omx_rpi
1629     runtime_cpudetect
1630     safe_bitstream_reader
1631     shared
1632     small
1633     static
1634     swscale_alpha
1635 "
1636
1637 LIBRARY_LIST="
1638     avcodec
1639     avdevice
1640     avfilter
1641     avformat
1642     avresample
1643     avutil
1644     postproc
1645     swresample
1646     swscale
1647 "
1648
1649 LICENSE_LIST="
1650     gpl
1651     nonfree
1652     version3
1653 "
1654
1655 PROGRAM_LIST="
1656     ffplay
1657     ffprobe
1658     ffserver
1659     ffmpeg
1660 "
1661
1662 SUBSYSTEM_LIST="
1663     dct
1664     dwt
1665     error_resilience
1666     faan
1667     fast_unaligned
1668     fft
1669     lsp
1670     lzo
1671     mdct
1672     pixelutils
1673     network
1674     rdft
1675 "
1676
1677 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1678 CONFIG_LIST="
1679     $DOCUMENT_LIST
1680     $EXAMPLE_LIST
1681     $EXTERNAL_LIBRARY_LIST
1682     $HWACCEL_LIBRARY_LIST
1683     $FEATURE_LIST
1684     $LICENSE_LIST
1685     $LIBRARY_LIST
1686     $PROGRAM_LIST
1687     $SUBSYSTEM_LIST
1688     fontconfig
1689     memory_poisoning
1690     neon_clobber_test
1691     ossfuzz
1692     pic
1693     thumb
1694     valgrind_backtrace
1695     xmm_clobber_test
1696     $COMPONENT_LIST
1697 "
1698
1699 THREADS_LIST="
1700     pthreads
1701     os2threads
1702     w32threads
1703 "
1704
1705 ATOMICS_LIST="
1706     atomics_gcc
1707     atomics_suncc
1708     atomics_win32
1709 "
1710
1711 AUTODETECT_LIBS="
1712     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1713     $HWACCEL_AUTODETECT_LIBRARY_LIST
1714     $THREADS_LIST
1715 "
1716
1717 ARCH_LIST="
1718     aarch64
1719     alpha
1720     arm
1721     avr32
1722     avr32_ap
1723     avr32_uc
1724     bfin
1725     ia64
1726     m68k
1727     mips
1728     mips64
1729     parisc
1730     ppc
1731     ppc64
1732     s390
1733     sh4
1734     sparc
1735     sparc64
1736     tilegx
1737     tilepro
1738     tomi
1739     x86
1740     x86_32
1741     x86_64
1742 "
1743
1744 ARCH_EXT_LIST_ARM="
1745     armv5te
1746     armv6
1747     armv6t2
1748     armv8
1749     neon
1750     vfp
1751     vfpv3
1752     setend
1753 "
1754
1755 ARCH_EXT_LIST_MIPS="
1756     mipsfpu
1757     mips32r2
1758     mips32r5
1759     mips64r2
1760     mips32r6
1761     mips64r6
1762     mipsdsp
1763     mipsdspr2
1764     msa
1765 "
1766
1767 ARCH_EXT_LIST_LOONGSON="
1768     loongson2
1769     loongson3
1770     mmi
1771 "
1772
1773 ARCH_EXT_LIST_X86_SIMD="
1774     aesni
1775     amd3dnow
1776     amd3dnowext
1777     avx
1778     avx2
1779     fma3
1780     fma4
1781     mmx
1782     mmxext
1783     sse
1784     sse2
1785     sse3
1786     sse4
1787     sse42
1788     ssse3
1789     xop
1790 "
1791
1792 ARCH_EXT_LIST_PPC="
1793     altivec
1794     dcbzl
1795     ldbrx
1796     power8
1797     ppc4xx
1798     vsx
1799 "
1800
1801 ARCH_EXT_LIST_X86="
1802     $ARCH_EXT_LIST_X86_SIMD
1803     cpunop
1804     i686
1805 "
1806
1807 ARCH_EXT_LIST="
1808     $ARCH_EXT_LIST_ARM
1809     $ARCH_EXT_LIST_PPC
1810     $ARCH_EXT_LIST_X86
1811     $ARCH_EXT_LIST_MIPS
1812     $ARCH_EXT_LIST_LOONGSON
1813 "
1814
1815 ARCH_FEATURES="
1816     aligned_stack
1817     fast_64bit
1818     fast_clz
1819     fast_cmov
1820     local_aligned_8
1821     local_aligned_16
1822     local_aligned_32
1823     simd_align_16
1824     simd_align_32
1825 "
1826
1827 BUILTIN_LIST="
1828     atomic_cas_ptr
1829     machine_rw_barrier
1830     MemoryBarrier
1831     mm_empty
1832     rdtsc
1833     sarestart
1834     sem_timedwait
1835     sync_val_compare_and_swap
1836 "
1837 HAVE_LIST_CMDLINE="
1838     inline_asm
1839     symver
1840     x86asm
1841 "
1842
1843 HAVE_LIST_PUB="
1844     bigendian
1845     fast_unaligned
1846 "
1847
1848 HEADERS_LIST="
1849     alsa_asoundlib_h
1850     altivec_h
1851     arpa_inet_h
1852     asm_types_h
1853     cdio_paranoia_h
1854     cdio_paranoia_paranoia_h
1855     cuda_h
1856     d3d11_h
1857     dispatch_dispatch_h
1858     dev_bktr_ioctl_bt848_h
1859     dev_bktr_ioctl_meteor_h
1860     dev_ic_bt8xx_h
1861     dev_video_bktr_ioctl_bt848_h
1862     dev_video_meteor_ioctl_meteor_h
1863     direct_h
1864     dirent_h
1865     dlfcn_h
1866     dxgidebug_h
1867     dxva_h
1868     ES2_gl_h
1869     gsm_h
1870     io_h
1871     mach_mach_time_h
1872     machine_ioctl_bt848_h
1873     machine_ioctl_meteor_h
1874     malloc_h
1875     opencv2_core_core_c_h
1876     openjpeg_2_2_openjpeg_h
1877     openjpeg_2_1_openjpeg_h
1878     openjpeg_2_0_openjpeg_h
1879     openjpeg_1_5_openjpeg_h
1880     OpenGL_gl3_h
1881     poll_h
1882     sndio_h
1883     soundcard_h
1884     stdatomic_h
1885     sys_mman_h
1886     sys_param_h
1887     sys_resource_h
1888     sys_select_h
1889     sys_soundcard_h
1890     sys_time_h
1891     sys_un_h
1892     sys_videoio_h
1893     termios_h
1894     udplite_h
1895     unistd_h
1896     valgrind_valgrind_h
1897     windows_h
1898     winsock2_h
1899 "
1900
1901 INTRINSICS_LIST="
1902     intrinsics_neon
1903 "
1904
1905 COMPLEX_FUNCS="
1906     cabs
1907     cexp
1908 "
1909
1910 MATH_FUNCS="
1911     atanf
1912     atan2f
1913     cbrt
1914     cbrtf
1915     copysign
1916     cosf
1917     erf
1918     exp2
1919     exp2f
1920     expf
1921     hypot
1922     isfinite
1923     isinf
1924     isnan
1925     ldexpf
1926     llrint
1927     llrintf
1928     log2
1929     log2f
1930     log10f
1931     lrint
1932     lrintf
1933     powf
1934     rint
1935     round
1936     roundf
1937     sinf
1938     trunc
1939     truncf
1940 "
1941
1942 SYSTEM_FUNCS="
1943     access
1944     aligned_malloc
1945     arc4random
1946     clock_gettime
1947     closesocket
1948     CommandLineToArgvW
1949     CoTaskMemFree
1950     CryptGenRandom
1951     dlopen
1952     fcntl
1953     flt_lim
1954     fork
1955     getaddrinfo
1956     gethrtime
1957     getopt
1958     GetProcessAffinityMask
1959     GetProcessMemoryInfo
1960     GetProcessTimes
1961     getrusage
1962     GetSystemTimeAsFileTime
1963     gettimeofday
1964     glob
1965     glXGetProcAddress
1966     gmtime_r
1967     inet_aton
1968     isatty
1969     jack_port_get_latency_range
1970     kbhit
1971     LoadLibrary
1972     localtime_r
1973     lstat
1974     lzo1x_999_compress
1975     mach_absolute_time
1976     MapViewOfFile
1977     memalign
1978     mkstemp
1979     mmap
1980     mprotect
1981     nanosleep
1982     PeekNamedPipe
1983     posix_memalign
1984     pthread_cancel
1985     sched_getaffinity
1986     SetConsoleTextAttribute
1987     SetConsoleCtrlHandler
1988     setmode
1989     setrlimit
1990     Sleep
1991     strerror_r
1992     sysconf
1993     sysctl
1994     usleep
1995     UTGetOSTypeFromString
1996     VirtualAlloc
1997     wglGetProcAddress
1998 "
1999
2000 TOOLCHAIN_FEATURES="
2001     as_dn_directive
2002     as_fpu_directive
2003     as_func
2004     as_object_arch
2005     asm_mod_q
2006     attribute_may_alias
2007     attribute_packed
2008     blocks_extension
2009     ebp_available
2010     ebx_available
2011     gnu_as
2012     gnu_windres
2013     ibm_asm
2014     inline_asm_direct_symbol_refs
2015     inline_asm_labels
2016     inline_asm_nonlocal_labels
2017     pragma_deprecated
2018     rsync_contimeout
2019     symver_asm_label
2020     symver_gnu_asm
2021     vfp_args
2022     xform_asm
2023     xmm_clobbers
2024 "
2025
2026 TYPES_LIST="
2027     CONDITION_VARIABLE_Ptr
2028     socklen_t
2029     struct_addrinfo
2030     struct_group_source_req
2031     struct_ip_mreq_source
2032     struct_ipv6_mreq
2033     struct_msghdr_msg_flags
2034     struct_pollfd
2035     struct_rusage_ru_maxrss
2036     struct_sctp_event_subscribe
2037     struct_sockaddr_in6
2038     struct_sockaddr_sa_len
2039     struct_sockaddr_storage
2040     struct_stat_st_mtim_tv_nsec
2041     struct_v4l2_frmivalenum_discrete
2042 "
2043
2044 HAVE_LIST="
2045     $ARCH_EXT_LIST
2046     $(add_suffix _external $ARCH_EXT_LIST)
2047     $(add_suffix _inline   $ARCH_EXT_LIST)
2048     $ARCH_FEATURES
2049     $ATOMICS_LIST
2050     $BUILTIN_LIST
2051     $COMPLEX_FUNCS
2052     $HAVE_LIST_CMDLINE
2053     $HAVE_LIST_PUB
2054     $HEADERS_LIST
2055     $INTRINSICS_LIST
2056     $MATH_FUNCS
2057     $SYSTEM_FUNCS
2058     $THREADS_LIST
2059     $TOOLCHAIN_FEATURES
2060     $TYPES_LIST
2061     alsa
2062     atomics_native
2063     dos_paths
2064     jack
2065     libc_msvcrt
2066     makeinfo
2067     makeinfo_html
2068     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2069     perl
2070     pod2man
2071     section_data_rel_ro
2072     sndio
2073     texi2html
2074     threads
2075     uwp
2076     vaapi_drm
2077     vaapi_x11
2078     vdpau_x11
2079     winrt
2080 "
2081
2082 # options emitted with CONFIG_ prefix but not available on the command line
2083 CONFIG_EXTRA="
2084     aandcttables
2085     ac3dsp
2086     audio_frame_queue
2087     audiodsp
2088     blockdsp
2089     bswapdsp
2090     cabac
2091     dirac_parse
2092     dvprofile
2093     exif
2094     faandct
2095     faanidct
2096     fdctdsp
2097     flacdsp
2098     fmtconvert
2099     frame_thread_encoder
2100     g722dsp
2101     golomb
2102     gplv3
2103     h263dsp
2104     h264chroma
2105     h264dsp
2106     h264parse
2107     h264pred
2108     h264qpel
2109     hevcparse
2110     hpeldsp
2111     huffman
2112     huffyuvdsp
2113     huffyuvencdsp
2114     idctdsp
2115     iirfilter
2116     mdct15
2117     intrax8
2118     iso_media
2119     ividsp
2120     jpegtables
2121     lgplv3
2122     libx262
2123     llauddsp
2124     llviddsp
2125     llvidencdsp
2126     lpc
2127     lzf
2128     me_cmp
2129     mpeg_er
2130     mpegaudio
2131     mpegaudiodsp
2132     mpegaudioheader
2133     mpegvideo
2134     mpegvideoenc
2135     mss34dsp
2136     pixblockdsp
2137     qpeldsp
2138     qsv
2139     qsvdec
2140     qsvenc
2141     rangecoder
2142     riffdec
2143     riffenc
2144     rtpdec
2145     rtpenc_chain
2146     rv34dsp
2147     sinewin
2148     snappy
2149     srtp
2150     startcode
2151     texturedsp
2152     texturedspenc
2153     tpeldsp
2154     vaapi_encode
2155     vc1dsp
2156     videodsp
2157     vp3dsp
2158     vp56dsp
2159     vp8dsp
2160     vt_bt2020
2161     wma_freqs
2162     wmv2dsp
2163 "
2164
2165 CMDLINE_SELECT="
2166     $ARCH_EXT_LIST
2167     $CONFIG_LIST
2168     $HAVE_LIST_CMDLINE
2169     $THREADS_LIST
2170     asm
2171     cross_compile
2172     debug
2173     extra_warnings
2174     logging
2175     lto
2176     optimizations
2177     rpath
2178     stripping
2179 "
2180
2181 PATHS_LIST="
2182     bindir
2183     datadir
2184     docdir
2185     incdir
2186     libdir
2187     mandir
2188     pkgconfigdir
2189     prefix
2190     shlibdir
2191     install_name_dir
2192 "
2193
2194 CMDLINE_SET="
2195     $PATHS_LIST
2196     ar
2197     arch
2198     as
2199     assert_level
2200     build_suffix
2201     cc
2202     objcc
2203     cpu
2204     cross_prefix
2205     custom_allocator
2206     cxx
2207     dep_cc
2208     doxygen
2209     env
2210     extra_version
2211     gas
2212     host_cc
2213     host_cflags
2214     host_extralibs
2215     host_ld
2216     host_ldflags
2217     host_os
2218     ignore_tests
2219     install
2220     ld
2221     ln_s
2222     logfile
2223     malloc_prefix
2224     nm
2225     optflags
2226     nvccflags
2227     pkg_config
2228     pkg_config_flags
2229     progs_suffix
2230     random_seed
2231     ranlib
2232     samples
2233     strip
2234     sws_max_filter_size
2235     sysinclude
2236     sysroot
2237     target_exec
2238     target_os
2239     target_path
2240     target_samples
2241     tempprefix
2242     toolchain
2243     valgrind
2244     x86asmexe
2245 "
2246
2247 CMDLINE_APPEND="
2248     extra_cflags
2249     extra_cxxflags
2250     extra_objcflags
2251     host_cppflags
2252 "
2253
2254 # code dependency declarations
2255
2256 # architecture extensions
2257
2258 armv5te_deps="arm"
2259 armv6_deps="arm"
2260 armv6t2_deps="arm"
2261 armv8_deps="aarch64"
2262 neon_deps_any="aarch64 arm"
2263 intrinsics_neon_deps="neon"
2264 vfp_deps_any="aarch64 arm"
2265 vfpv3_deps="vfp"
2266 setend_deps="arm"
2267
2268 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2269
2270 loongson2_deps="mips"
2271 loongson3_deps="mips"
2272 mipsfpu_deps="mips"
2273 mipsdsp_deps="mips"
2274 mipsdspr2_deps="mips"
2275 mips32r2_deps="mips"
2276 mips32r5_deps="mips"
2277 mips32r6_deps="mips"
2278 mips64r2_deps="mips"
2279 mips64r6_deps="mips"
2280 msa_deps="mipsfpu"
2281 mmi_deps="mips"
2282
2283 altivec_deps="ppc"
2284 dcbzl_deps="ppc"
2285 ldbrx_deps="ppc"
2286 ppc4xx_deps="ppc"
2287 vsx_deps="altivec"
2288 power8_deps="vsx"
2289
2290 cpunop_deps="i686"
2291 x86_64_select="i686"
2292 x86_64_suggest="fast_cmov"
2293
2294 amd3dnow_deps="mmx"
2295 amd3dnowext_deps="amd3dnow"
2296 i686_deps="x86"
2297 mmx_deps="x86"
2298 mmxext_deps="mmx"
2299 sse_deps="mmxext"
2300 sse2_deps="sse"
2301 sse3_deps="sse2"
2302 ssse3_deps="sse3"
2303 sse4_deps="ssse3"
2304 sse42_deps="sse4"
2305 aesni_deps="sse42"
2306 avx_deps="sse42"
2307 xop_deps="avx"
2308 fma3_deps="avx"
2309 fma4_deps="avx"
2310 avx2_deps="avx"
2311
2312 mmx_external_deps="x86asm"
2313 mmx_inline_deps="inline_asm"
2314 mmx_suggest="mmx_external mmx_inline"
2315
2316 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2317     eval dep=\$${ext}_deps
2318     eval ${ext}_external_deps='"${dep}_external"'
2319     eval ${ext}_inline_deps='"${dep}_inline"'
2320     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2321 done
2322
2323 aligned_stack_if_any="aarch64 ppc x86"
2324 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2325 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2326 fast_unaligned_if_any="aarch64 ppc x86"
2327 simd_align_16_if_any="altivec neon sse"
2328 simd_align_32_if_any="avx"
2329
2330 # system capabilities
2331 symver_if_any="symver_asm_label symver_gnu_asm"
2332 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
2333
2334 # threading support
2335 atomics_gcc_if="sync_val_compare_and_swap"
2336 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2337 atomics_win32_if="MemoryBarrier"
2338 atomics_native_if_any="$ATOMICS_LIST"
2339 w32threads_deps="atomics_native"
2340 threads_if_any="$THREADS_LIST"
2341
2342 # subsystems
2343 dct_select="rdft"
2344 dirac_parse_select="golomb"
2345 error_resilience_select="me_cmp"
2346 faandct_deps="faan fdctdsp"
2347 faanidct_deps="faan idctdsp"
2348 h264dsp_select="startcode"
2349 hevcparse_select="golomb"
2350 frame_thread_encoder_deps="encoders threads"
2351 intrax8_select="blockdsp idctdsp"
2352 mdct_select="fft"
2353 mdct15_select="fft"
2354 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2355 mpeg_er_select="error_resilience"
2356 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2357 mpegaudiodsp_select="dct"
2358 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2359 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2360 vc1dsp_select="h264chroma qpeldsp startcode"
2361 rdft_select="fft"
2362
2363 # decoders / encoders
2364 aac_decoder_select="mdct15 mdct sinewin"
2365 aac_fixed_decoder_select="mdct sinewin"
2366 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2367 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2368 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2369 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2370 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2371 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2372 adpcm_g722_decoder_select="g722dsp"
2373 adpcm_g722_encoder_select="g722dsp"
2374 aic_decoder_select="golomb idctdsp"
2375 alac_encoder_select="lpc"
2376 als_decoder_select="bswapdsp"
2377 amrnb_decoder_select="lsp"
2378 amrwb_decoder_select="lsp"
2379 amv_decoder_select="sp5x_decoder exif"
2380 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2381 ape_decoder_select="bswapdsp llauddsp"
2382 apng_decoder_select="zlib"
2383 apng_encoder_select="llvidencdsp zlib"
2384 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2385 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2386 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2387 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2388 atrac1_decoder_select="mdct sinewin"
2389 atrac3_decoder_select="mdct"
2390 atrac3p_decoder_select="mdct sinewin"
2391 avrn_decoder_select="exif jpegtables"
2392 bink_decoder_select="blockdsp hpeldsp"
2393 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2394 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2395 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2396 clearvideo_decoder_select="idctdsp"
2397 cllc_decoder_select="bswapdsp"
2398 comfortnoise_encoder_select="lpc"
2399 cook_decoder_select="audiodsp mdct sinewin"
2400 cscd_decoder_select="lzo"
2401 cscd_decoder_suggest="zlib"
2402 dca_decoder_select="mdct"
2403 dds_decoder_select="texturedsp"
2404 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2405 dnxhd_decoder_select="blockdsp idctdsp"
2406 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2407 dolby_e_decoder_select="mdct"
2408 dvvideo_decoder_select="dvprofile idctdsp"
2409 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2410 dxa_decoder_select="zlib"
2411 dxv_decoder_select="lzf texturedsp"
2412 eac3_decoder_select="ac3_decoder"
2413 eac3_encoder_select="ac3_encoder"
2414 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2415 eatgq_decoder_select="aandcttables"
2416 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2417 exr_decoder_select="zlib"
2418 ffv1_decoder_select="rangecoder"
2419 ffv1_encoder_select="rangecoder"
2420 ffvhuff_decoder_select="huffyuv_decoder"
2421 ffvhuff_encoder_select="huffyuv_encoder"
2422 fic_decoder_select="golomb"
2423 flac_decoder_select="flacdsp"
2424 flac_encoder_select="bswapdsp flacdsp lpc"
2425 flashsv2_decoder_select="zlib"
2426 flashsv2_encoder_select="zlib"
2427 flashsv_decoder_select="zlib"
2428 flashsv_encoder_select="zlib"
2429 flv_decoder_select="h263_decoder"
2430 flv_encoder_select="h263_encoder"
2431 fourxm_decoder_select="blockdsp bswapdsp"
2432 fraps_decoder_select="bswapdsp huffman"
2433 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2434 g729_decoder_select="audiodsp"
2435 h261_decoder_select="mpegvideo"
2436 h261_encoder_select="aandcttables mpegvideoenc"
2437 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2438 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2439 h263i_decoder_select="h263_decoder"
2440 h263p_decoder_select="h263_decoder"
2441 h263p_encoder_select="h263_encoder"
2442 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2443 h264_decoder_suggest="error_resilience"
2444 hap_decoder_select="snappy texturedsp"
2445 hap_encoder_deps="libsnappy"
2446 hap_encoder_select="texturedspenc"
2447 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2448 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2449 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2450 iac_decoder_select="imc_decoder"
2451 imc_decoder_select="bswapdsp fft mdct sinewin"
2452 indeo3_decoder_select="hpeldsp"
2453 indeo4_decoder_select="ividsp"
2454 indeo5_decoder_select="ividsp"
2455 interplay_video_decoder_select="hpeldsp"
2456 jpegls_decoder_select="mjpeg_decoder"
2457 jv_decoder_select="blockdsp"
2458 lagarith_decoder_select="llviddsp"
2459 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2460 magicyuv_decoder_select="llviddsp"
2461 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2462 metasound_decoder_select="lsp mdct sinewin"
2463 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2464 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2465 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2466 mjpegb_decoder_select="mjpeg_decoder"
2467 mlp_decoder_select="mlp_parser"
2468 mlp_encoder_select="lpc"
2469 motionpixels_decoder_select="bswapdsp"
2470 mp1_decoder_select="mpegaudio"
2471 mp1float_decoder_select="mpegaudio"
2472 mp2_decoder_select="mpegaudio"
2473 mp2float_decoder_select="mpegaudio"
2474 mp3_decoder_select="mpegaudio"
2475 mp3adu_decoder_select="mpegaudio"
2476 mp3adufloat_decoder_select="mpegaudio"
2477 mp3float_decoder_select="mpegaudio"
2478 mp3on4_decoder_select="mpegaudio"
2479 mp3on4float_decoder_select="mpegaudio"
2480 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2481 mpc8_decoder_select="mpegaudiodsp"
2482 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2483 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2484 mpegvideo_decoder_select="mpegvideo"
2485 mpeg1video_decoder_select="mpegvideo"
2486 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2487 mpeg2video_decoder_select="mpegvideo"
2488 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2489 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2490 mpeg4_encoder_select="h263_encoder"
2491 msa1_decoder_select="mss34dsp"
2492 mscc_decoder_select="zlib"
2493 msmpeg4v1_decoder_select="h263_decoder"
2494 msmpeg4v2_decoder_select="h263_decoder"
2495 msmpeg4v2_encoder_select="h263_encoder"
2496 msmpeg4v3_decoder_select="h263_decoder"
2497 msmpeg4v3_encoder_select="h263_encoder"
2498 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2499 mts2_decoder_select="mss34dsp"
2500 mxpeg_decoder_select="mjpeg_decoder"
2501 nellymoser_decoder_select="mdct sinewin"
2502 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2503 nuv_decoder_select="idctdsp lzo"
2504 on2avc_decoder_select="mdct"
2505 opus_decoder_deps="swresample"
2506 opus_decoder_select="mdct15"
2507 opus_encoder_select="audio_frame_queue mdct15"
2508 png_decoder_select="zlib"
2509 png_encoder_select="llvidencdsp zlib"
2510 prores_decoder_select="blockdsp idctdsp"
2511 prores_encoder_select="fdctdsp"
2512 qcelp_decoder_select="lsp"
2513 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2514 ra_144_decoder_select="audiodsp"
2515 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2516 ralf_decoder_select="golomb"
2517 rawvideo_decoder_select="bswapdsp"
2518 rscc_decoder_select="zlib"
2519 rtjpeg_decoder_select="me_cmp"
2520 rv10_decoder_select="h263_decoder"
2521 rv10_encoder_select="h263_encoder"
2522 rv20_decoder_select="h263_decoder"
2523 rv20_encoder_select="h263_encoder"
2524 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2525 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2526 screenpresso_decoder_select="zlib"
2527 shorten_decoder_select="bswapdsp"
2528 sipr_decoder_select="lsp"
2529 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2530 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2531 sonic_decoder_select="golomb rangecoder"
2532 sonic_encoder_select="golomb rangecoder"
2533 sonic_ls_encoder_select="golomb rangecoder"
2534 sp5x_decoder_select="mjpeg_decoder"
2535 srgc_decoder_select="zlib"
2536 svq1_decoder_select="hpeldsp"
2537 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2538 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2539 svq3_decoder_suggest="zlib"
2540 tak_decoder_select="audiodsp"
2541 tdsc_decoder_select="zlib mjpeg_decoder"
2542 theora_decoder_select="vp3_decoder"
2543 thp_decoder_select="mjpeg_decoder"
2544 tiff_decoder_suggest="zlib lzma"
2545 tiff_encoder_suggest="zlib"
2546 truehd_decoder_select="mlp_parser"
2547 truehd_encoder_select="lpc"
2548 truemotion2_decoder_select="bswapdsp"
2549 truespeech_decoder_select="bswapdsp"
2550 tscc_decoder_select="zlib"
2551 twinvq_decoder_select="mdct lsp sinewin"
2552 txd_decoder_select="texturedsp"
2553 utvideo_decoder_select="bswapdsp llviddsp"
2554 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2555 vble_decoder_select="llviddsp"
2556 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2557 vc1_qsv_decoder_deps="libmfx"
2558 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2559 vc1image_decoder_select="vc1_decoder"
2560 vorbis_decoder_select="mdct"
2561 vorbis_encoder_select="mdct"
2562 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2563 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2564 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2565 vp6a_decoder_select="vp6_decoder"
2566 vp6f_decoder_select="vp6_decoder"
2567 vp7_decoder_select="h264pred videodsp vp8dsp"
2568 vp8_decoder_select="h264pred videodsp vp8dsp"
2569 vp9_decoder_select="videodsp vp9_parser"
2570 webp_decoder_select="vp8_decoder exif"
2571 wmalossless_decoder_select="llauddsp"
2572 wmapro_decoder_select="mdct sinewin wma_freqs"
2573 wmav1_decoder_select="mdct sinewin wma_freqs"
2574 wmav1_encoder_select="mdct sinewin wma_freqs"
2575 wmav2_decoder_select="mdct sinewin wma_freqs"
2576 wmav2_encoder_select="mdct sinewin wma_freqs"
2577 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2578 wmv1_decoder_select="h263_decoder"
2579 wmv1_encoder_select="h263_encoder"
2580 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2581 wmv2_encoder_select="h263_encoder wmv2dsp"
2582 wmv3_decoder_select="vc1_decoder"
2583 wmv3image_decoder_select="wmv3_decoder"
2584 xma1_decoder_select="wmapro_decoder"
2585 xma2_decoder_select="wmapro_decoder"
2586 zerocodec_decoder_select="zlib"
2587 zlib_decoder_select="zlib"
2588 zlib_encoder_select="zlib"
2589 zmbv_decoder_select="zlib"
2590 zmbv_encoder_select="zlib"
2591
2592 # platform codecs
2593 audiotoolbox_deps="AudioToolbox_AudioToolbox_h"
2594 audiotoolbox_extralibs="-framework CoreFoundation -framework AudioToolbox -framework CoreMedia"
2595
2596 # hardware accelerators
2597 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2598 cuda_deps_any="dlopen LoadLibrary"
2599 cuvid_deps="cuda"
2600 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2601 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32"
2602 dxva2_extralibs="-luser32"
2603 vda_framework_deps="VideoDecodeAcceleration_VDADecoder_h blocks_extension"
2604 vda_framework_extralibs="-framework VideoDecodeAcceleration"
2605 vda_deps="vda_framework pthreads"
2606 vda_extralibs="-framework CoreFoundation -framework QuartzCore"
2607 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2608 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2609 xvmc_deps="X11_extensions_XvMClib_h"
2610
2611 h263_vaapi_hwaccel_deps="vaapi"
2612 h263_vaapi_hwaccel_select="h263_decoder"
2613 h263_videotoolbox_hwaccel_deps="videotoolbox"
2614 h263_videotoolbox_hwaccel_select="h263_decoder"
2615 h264_cuvid_hwaccel_deps="cuda cuvid"
2616 h264_cuvid_hwaccel_select="h264_cuvid_decoder"
2617 h264_d3d11va_hwaccel_deps="d3d11va"
2618 h264_d3d11va_hwaccel_select="h264_decoder"
2619 h264_d3d11va2_hwaccel_deps="d3d11va"
2620 h264_d3d11va2_hwaccel_select="h264_decoder"
2621 h264_dxva2_hwaccel_deps="dxva2"
2622 h264_dxva2_hwaccel_select="h264_decoder"
2623 h264_mediacodec_hwaccel_deps="mediacodec"
2624 h264_mmal_hwaccel_deps="mmal"
2625 h264_qsv_hwaccel_deps="libmfx"
2626 h264_vaapi_hwaccel_deps="vaapi"
2627 h264_vaapi_hwaccel_select="h264_decoder"
2628 h264_vda_hwaccel_deps="vda"
2629 h264_vda_hwaccel_select="h264_decoder"
2630 h264_vda_old_hwaccel_deps="vda"
2631 h264_vda_old_hwaccel_select="h264_decoder"
2632 h264_vdpau_hwaccel_deps="vdpau"
2633 h264_vdpau_hwaccel_select="h264_decoder"
2634 h264_videotoolbox_hwaccel_deps="videotoolbox"
2635 h264_videotoolbox_hwaccel_select="h264_decoder"
2636 hevc_cuvid_hwaccel_deps="cuda cuvid"
2637 hevc_cuvid_hwaccel_select="hevc_cuvid_decoder"
2638 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2639 hevc_d3d11va_hwaccel_select="hevc_decoder"
2640 hevc_mediacodec_hwaccel_deps="mediacodec"
2641 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2642 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2643 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2644 hevc_dxva2_hwaccel_select="hevc_decoder"
2645 hevc_qsv_hwaccel_deps="libmfx"
2646 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2647 hevc_vaapi_hwaccel_select="hevc_decoder"
2648 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2649 hevc_vdpau_hwaccel_select="hevc_decoder"
2650 mjpeg_cuvid_hwaccel_deps="cuda cuvid"
2651 mjpeg_cuvid_hwaccel_select="mjpeg_cuvid_decoder"
2652 mpeg_xvmc_hwaccel_deps="xvmc"
2653 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2654 mpeg1_cuvid_hwaccel_deps="cuda cuvid"
2655 mpeg1_cuvid_hwaccel_select="mpeg1_cuvid_decoder"
2656 mpeg1_vdpau_hwaccel_deps="vdpau"
2657 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2658 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2659 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2660 mpeg1_xvmc_hwaccel_deps="xvmc"
2661 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2662 mpeg2_cuvid_hwaccel_deps="cuda cuvid"
2663 mpeg2_cuvid_hwaccel_select="mpeg2_cuvid_decoder"
2664 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2665 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2666 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2667 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2668 mpeg2_dxva2_hwaccel_deps="dxva2"
2669 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2670 mpeg2_mediacodec_hwaccel_deps="mediacodec"
2671 mpeg2_mmal_hwaccel_deps="mmal"
2672 mpeg2_qsv_hwaccel_deps="libmfx"
2673 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2674 mpeg2_vaapi_hwaccel_deps="vaapi"
2675 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2676 mpeg2_vdpau_hwaccel_deps="vdpau"
2677 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2678 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2679 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2680 mpeg2_xvmc_hwaccel_deps="xvmc"
2681 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2682 mpeg4_cuvid_hwaccel_deps="cuda cuvid"
2683 mpeg4_cuvid_hwaccel_select="mpeg4_cuvid_decoder"
2684 mpeg4_mediacodec_hwaccel_deps="mediacodec"
2685 mpeg4_mmal_hwaccel_deps="mmal"
2686 mpeg4_vaapi_hwaccel_deps="vaapi"
2687 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2688 mpeg4_vdpau_hwaccel_deps="vdpau"
2689 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2690 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2691 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2692 vc1_cuvid_hwaccel_deps="cuda cuvid"
2693 vc1_cuvid_hwaccel_select="vc1_cuvid_decoder"
2694 vc1_d3d11va_hwaccel_deps="d3d11va"
2695 vc1_d3d11va_hwaccel_select="vc1_decoder"
2696 vc1_d3d11va2_hwaccel_deps="d3d11va"
2697 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2698 vc1_dxva2_hwaccel_deps="dxva2"
2699 vc1_dxva2_hwaccel_select="vc1_decoder"
2700 vc1_mmal_hwaccel_deps="mmal"
2701 vc1_qsv_hwaccel_deps="libmfx"
2702 vc1_qsv_hwaccel_select="qsvdec_vc1"
2703 vc1_vaapi_hwaccel_deps="vaapi"
2704 vc1_vaapi_hwaccel_select="vc1_decoder"
2705 vc1_vdpau_hwaccel_deps="vdpau"
2706 vc1_vdpau_hwaccel_select="vc1_decoder"
2707 vp8_cuvid_hwaccel_deps="cuda cuvid"
2708 vp8_cuvid_hwaccel_select="vp8_cuvid_decoder"
2709 vp9_cuvid_hwaccel_deps="cuda cuvid"
2710 vp9_cuvid_hwaccel_select="vp9_cuvid_decoder"
2711 vp8_mediacodec_hwaccel_deps="mediacodec"
2712 vp8_qsv_hwaccel_deps="libmfx"
2713 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2714 vp9_d3d11va_hwaccel_select="vp9_decoder"
2715 vp9_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2716 vp9_d3d11va2_hwaccel_select="vp9_decoder"
2717 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2718 vp9_dxva2_hwaccel_select="vp9_decoder"
2719 vp9_mediacodec_hwaccel_deps="mediacodec"
2720 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2721 vp9_vaapi_hwaccel_select="vp9_decoder"
2722 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2723 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2724 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2725 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2726 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2727
2728 # hardware-accelerated codecs
2729 omx_deps="dlopen pthreads"
2730 omx_extralibs='$ldl'
2731 omx_rpi_select="omx"
2732 qsvdec_select="qsv"
2733 qsvenc_select="qsv"
2734 vaapi_encode_deps="vaapi"
2735
2736 hwupload_cuda_filter_deps="cuda"
2737 scale_npp_filter_deps="cuda libnpp"
2738 scale_cuda_filter_deps="cuda_sdk"
2739
2740 nvenc_deps="cuda"
2741 nvenc_deps_any="dlopen LoadLibrary"
2742 nvenc_encoder_deps="nvenc"
2743
2744 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2745 h264_cuvid_decoder_deps="cuda cuvid"
2746 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2747 h264_mediacodec_decoder_deps="mediacodec"
2748 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2749 h264_mmal_decoder_deps="mmal"
2750 h264_nvenc_encoder_deps="nvenc"
2751 h264_omx_encoder_deps="omx"
2752 h264_qsv_decoder_deps="libmfx"
2753 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2754 h264_qsv_encoder_deps="libmfx"
2755 h264_qsv_encoder_select="qsvenc"
2756 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2757 h264_vaapi_encoder_select="vaapi_encode golomb"
2758 h264_vda_decoder_deps="vda"
2759 h264_vda_decoder_select="h264_decoder"
2760 h264_vdpau_decoder_deps="vdpau"
2761 h264_vdpau_decoder_select="h264_decoder"
2762 hevc_cuvid_decoder_deps="cuda cuvid"
2763 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2764 hevc_mediacodec_decoder_deps="mediacodec"
2765 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2766 hevc_nvenc_encoder_deps="nvenc"
2767 hevc_qsv_decoder_deps="libmfx"
2768 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2769 hevc_qsv_encoder_deps="libmfx"
2770 hevc_qsv_encoder_select="hevcparse qsvenc"
2771 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2772 hevc_vaapi_encoder_select="vaapi_encode golomb"
2773 mjpeg_cuvid_decoder_deps="cuda cuvid"
2774 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2775 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2776 mpeg1_cuvid_decoder_deps="cuda cuvid"
2777 mpeg1_vdpau_decoder_deps="vdpau"
2778 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2779 mpeg2_crystalhd_decoder_select="crystalhd"
2780 mpeg2_cuvid_decoder_deps="cuda cuvid"
2781 mpeg2_mmal_decoder_deps="mmal"
2782 mpeg2_mediacodec_decoder_deps="mediacodec"
2783 mpeg2_qsv_decoder_deps="libmfx"
2784 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2785 mpeg2_qsv_encoder_deps="libmfx"
2786 mpeg2_qsv_encoder_select="qsvenc"
2787 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2788 mpeg2_vaapi_encoder_select="vaapi_encode"
2789 mpeg4_crystalhd_decoder_select="crystalhd"
2790 mpeg4_cuvid_decoder_deps="cuda cuvid"
2791 mpeg4_mediacodec_decoder_deps="mediacodec"
2792 mpeg4_mmal_decoder_deps="mmal"
2793 mpeg4_omx_encoder_deps="omx"
2794 mpeg4_vdpau_decoder_deps="vdpau"
2795 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2796 mpeg_vdpau_decoder_deps="vdpau"
2797 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2798 msmpeg4_crystalhd_decoder_select="crystalhd"
2799 nvenc_h264_encoder_select="h264_nvenc_encoder"
2800 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2801 vc1_crystalhd_decoder_select="crystalhd"
2802 vc1_cuvid_decoder_deps="cuda cuvid"
2803 vc1_mmal_decoder_deps="mmal"
2804 vc1_vdpau_decoder_deps="vdpau"
2805 vc1_vdpau_decoder_select="vc1_decoder"
2806 vp8_cuvid_decoder_deps="cuda cuvid"
2807 vp8_mediacodec_decoder_deps="mediacodec"
2808 vp8_qsv_decoder_deps="libmfx"
2809 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2810 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2811 vp8_vaapi_encoder_select="vaapi_encode"
2812 vp9_cuvid_decoder_deps="cuda cuvid"
2813 vp9_mediacodec_decoder_deps="mediacodec"
2814 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2815 vp9_vaapi_encoder_select="vaapi_encode"
2816 wmv3_crystalhd_decoder_select="crystalhd"
2817 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2818
2819 # parsers
2820 h264_parser_select="golomb h264dsp h264parse"
2821 hevc_parser_select="hevcparse"
2822 mpegaudio_parser_select="mpegaudioheader"
2823 mpegvideo_parser_select="mpegvideo"
2824 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2825 vc1_parser_select="vc1dsp"
2826
2827 # bitstream_filters
2828 mjpeg2jpeg_bsf_select="jpegtables"
2829
2830 # external libraries
2831 aac_at_decoder_deps="audiotoolbox"
2832 ac3_at_decoder_deps="audiotoolbox"
2833 ac3_at_decoder_select="ac3_parser"
2834 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2835 alac_at_decoder_deps="audiotoolbox"
2836 amr_nb_at_decoder_deps="audiotoolbox"
2837 avisynth_deps_any="dlopen LoadLibrary"
2838 avisynth_demuxer_deps="avisynth"
2839 avisynth_demuxer_select="riffdec"
2840 eac3_at_decoder_deps="audiotoolbox"
2841 eac3_at_decoder_select="ac3_parser"
2842 gsm_ms_at_decoder_deps="audiotoolbox"
2843 ilbc_at_decoder_deps="audiotoolbox"
2844 mp1_at_decoder_deps="audiotoolbox"
2845 mp2_at_decoder_deps="audiotoolbox"
2846 mp3_at_decoder_deps="audiotoolbox"
2847 mp1_at_decoder_select="mpegaudioheader"
2848 mp2_at_decoder_select="mpegaudioheader"
2849 mp3_at_decoder_select="mpegaudioheader"
2850 pcm_alaw_at_decoder_deps="audiotoolbox"
2851 pcm_mulaw_at_decoder_deps="audiotoolbox"
2852 qdmc_at_decoder_deps="audiotoolbox"
2853 qdm2_at_decoder_deps="audiotoolbox"
2854 aac_at_encoder_deps="audiotoolbox"
2855 aac_at_encoder_select="audio_frame_queue"
2856 alac_at_encoder_deps="audiotoolbox"
2857 alac_at_encoder_select="audio_frame_queue"
2858 ilbc_at_encoder_deps="audiotoolbox"
2859 ilbc_at_encoder_select="audio_frame_queue"
2860 pcm_alaw_at_encoder_deps="audiotoolbox"
2861 pcm_alaw_at_encoder_select="audio_frame_queue"
2862 pcm_mulaw_at_encoder_deps="audiotoolbox"
2863 pcm_mulaw_at_encoder_select="audio_frame_queue"
2864 chromaprint_muxer_deps="chromaprint"
2865 h264_videotoolbox_encoder_deps="videotoolbox_encoder pthreads"
2866 libcelt_decoder_deps="libcelt"
2867 libfdk_aac_decoder_deps="libfdk_aac"
2868 libfdk_aac_encoder_deps="libfdk_aac"
2869 libfdk_aac_encoder_select="audio_frame_queue"
2870 libgme_demuxer_deps="libgme"
2871 libgsm_decoder_deps="libgsm"
2872 libgsm_encoder_deps="libgsm"
2873 libgsm_ms_decoder_deps="libgsm"
2874 libgsm_ms_encoder_deps="libgsm"
2875 libilbc_decoder_deps="libilbc"
2876 libilbc_encoder_deps="libilbc"
2877 libkvazaar_encoder_deps="libkvazaar"
2878 libmodplug_demuxer_deps="libmodplug"
2879 libmp3lame_encoder_deps="libmp3lame"
2880 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2881 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2882 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2883 libopencore_amrnb_encoder_select="audio_frame_queue"
2884 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2885 libopenh264_decoder_deps="libopenh264"
2886 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2887 libopenh264_encoder_deps="libopenh264"
2888 libopenjpeg_decoder_deps="libopenjpeg"
2889 libopenjpeg_encoder_deps="libopenjpeg"
2890 libopenmpt_demuxer_deps="libopenmpt"
2891 libopus_decoder_deps="libopus"
2892 libopus_encoder_deps="libopus"
2893 libopus_encoder_select="audio_frame_queue"
2894 librsvg_decoder_deps="librsvg"
2895 libshine_encoder_deps="libshine"
2896 libshine_encoder_select="audio_frame_queue"
2897 libspeex_decoder_deps="libspeex"
2898 libspeex_encoder_deps="libspeex"
2899 libspeex_encoder_select="audio_frame_queue"
2900 libtheora_encoder_deps="libtheora"
2901 libtwolame_encoder_deps="libtwolame"
2902 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2903 libvorbis_decoder_deps="libvorbis"
2904 libvorbis_encoder_deps="libvorbis"
2905 libvorbis_encoder_select="audio_frame_queue"
2906 libvpx_vp8_decoder_deps="libvpx"
2907 libvpx_vp8_encoder_deps="libvpx"
2908 libvpx_vp9_decoder_deps="libvpx"
2909 libvpx_vp9_encoder_deps="libvpx"
2910 libwavpack_encoder_deps="libwavpack"
2911 libwavpack_encoder_select="audio_frame_queue"
2912 libwebp_encoder_deps="libwebp"
2913 libwebp_anim_encoder_deps="libwebp"
2914 libx262_encoder_deps="libx262"
2915 libx264_encoder_deps="libx264"
2916 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2917 libx264rgb_encoder_select="libx264_encoder"
2918 libx265_encoder_deps="libx265"
2919 libxavs_encoder_deps="libxavs"
2920 libxvid_encoder_deps="libxvid"
2921 libzvbi_teletext_decoder_deps="libzvbi"
2922 videotoolbox_deps="VideoToolbox_VideoToolbox_h"
2923 videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework CoreVideo"
2924 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2925 videotoolbox_encoder_suggest="vda_framework vt_bt2020"
2926 vt_bt2020_deps="kCVImageBufferColorPrimaries_ITU_R_2020"
2927
2928 # demuxers / muxers
2929 ac3_demuxer_select="ac3_parser"
2930 aiff_muxer_select="iso_media"
2931 asf_demuxer_select="riffdec"
2932 asf_o_demuxer_select="riffdec"
2933 asf_muxer_select="riffenc"
2934 asf_stream_muxer_select="asf_muxer"
2935 avi_demuxer_select="iso_media riffdec exif"
2936 avi_muxer_select="riffenc"
2937 caf_demuxer_select="iso_media riffdec"
2938 caf_muxer_select="iso_media"
2939 dash_muxer_select="mp4_muxer"
2940 dirac_demuxer_select="dirac_parser"
2941 dts_demuxer_select="dca_parser"
2942 dtshd_demuxer_select="dca_parser"
2943 dv_demuxer_select="dvprofile"
2944 dv_muxer_select="dvprofile"
2945 dxa_demuxer_select="riffdec"
2946 eac3_demuxer_select="ac3_parser"
2947 f4v_muxer_select="mov_muxer"
2948 fifo_muxer_deps="threads"
2949 flac_demuxer_select="flac_parser"
2950 hds_muxer_select="flv_muxer"
2951 hls_muxer_select="mpegts_muxer"
2952 image2_alias_pix_demuxer_select="image2_demuxer"
2953 image2_brender_pix_demuxer_select="image2_demuxer"
2954 ipod_muxer_select="mov_muxer"
2955 ismv_muxer_select="mov_muxer"
2956 matroska_audio_muxer_select="matroska_muxer"
2957 matroska_demuxer_select="iso_media riffdec"
2958 matroska_demuxer_suggest="bzlib lzo zlib"
2959 matroska_muxer_select="iso_media riffenc"
2960 mmf_muxer_select="riffenc"
2961 mov_demuxer_select="iso_media riffdec"
2962 mov_demuxer_suggest="zlib"
2963 mov_muxer_select="iso_media riffenc rtpenc_chain"
2964 mp3_demuxer_select="mpegaudio_parser"
2965 mp3_muxer_select="mpegaudioheader"
2966 mp4_muxer_select="mov_muxer"
2967 mpegts_demuxer_select="iso_media"
2968 mpegts_muxer_select="adts_muxer latm_muxer"
2969 mpegtsraw_demuxer_select="mpegts_demuxer"
2970 mxf_d10_muxer_select="mxf_muxer"
2971 mxf_opatom_muxer_select="mxf_muxer"
2972 nut_muxer_select="riffenc"
2973 nuv_demuxer_select="riffdec"
2974 oga_muxer_select="ogg_muxer"
2975 ogg_demuxer_select="dirac_parse"
2976 ogv_muxer_select="ogg_muxer"
2977 opus_muxer_select="ogg_muxer"
2978 psp_muxer_select="mov_muxer"
2979 rtp_demuxer_select="sdp_demuxer"
2980 rtp_muxer_select="golomb"
2981 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2982 rtsp_demuxer_select="http_protocol rtpdec"
2983 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2984 sap_demuxer_select="sdp_demuxer"
2985 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2986 sdp_demuxer_select="rtpdec"
2987 smoothstreaming_muxer_select="ismv_muxer"
2988 spdif_muxer_select="aac_parser"
2989 spx_muxer_select="ogg_muxer"
2990 swf_demuxer_suggest="zlib"
2991 tak_demuxer_select="tak_parser"
2992 tg2_muxer_select="mov_muxer"
2993 tgp_muxer_select="mov_muxer"
2994 vobsub_demuxer_select="mpegps_demuxer"
2995 w64_demuxer_select="wav_demuxer"
2996 w64_muxer_select="wav_muxer"
2997 wav_demuxer_select="riffdec"
2998 wav_muxer_select="riffenc"
2999 webm_muxer_select="iso_media riffenc"
3000 webm_dash_manifest_demuxer_select="matroska_demuxer"
3001 wtv_demuxer_select="mpegts_demuxer riffdec"
3002 wtv_muxer_select="mpegts_muxer riffenc"
3003 xmv_demuxer_select="riffdec"
3004 xwma_demuxer_select="riffdec"
3005
3006 # indevs / outdevs
3007 alsa_indev_deps="alsa"
3008 alsa_outdev_deps="alsa"
3009 avfoundation_indev_deps="pthreads"
3010 avfoundation_indev_extralibs="-framework Foundation -framework AVFoundation -framework CoreVideo -framework CoreMedia"
3011 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
3012 caca_outdev_deps="libcaca"
3013 decklink_indev_deps="decklink threads"
3014 decklink_indev_extralibs="-lstdc++"
3015 decklink_outdev_deps="decklink threads"
3016 decklink_outdev_extralibs="-lstdc++"
3017 libndi_newtek_indev_deps="libndi_newtek"
3018 libndi_newtek_indev_extralibs="-lndi"
3019 libndi_newtek_outdev_deps="libndi_newtek"
3020 libndi_newtek_outdev_extralibs="-lndi"
3021 dshow_indev_deps="IBaseFilter"
3022 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3023 dv1394_indev_deps="dv1394"
3024 dv1394_indev_select="dv_demuxer"
3025 fbdev_indev_deps="linux_fb_h"
3026 fbdev_outdev_deps="linux_fb_h"
3027 gdigrab_indev_deps="CreateDIBSection"
3028 gdigrab_indev_extralibs="-lgdi32"
3029 gdigrab_indev_select="bmp_decoder"
3030 iec61883_indev_deps="libiec61883"
3031 jack_indev_deps="jack"
3032 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3033 lavfi_indev_deps="avfilter"
3034 libcdio_indev_deps="libcdio"
3035 libdc1394_indev_deps="libdc1394"
3036 libv4l2_indev_deps="libv4l2"
3037 openal_indev_deps="openal"
3038 opengl_outdev_deps="opengl"
3039 oss_indev_deps_any="soundcard_h sys_soundcard_h"
3040 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
3041 pulse_indev_deps="libpulse"
3042 pulse_outdev_deps="libpulse"
3043 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
3044 qtkit_indev_select="qtkit"
3045 sdl2_outdev_deps="sdl2"
3046 sndio_indev_deps="sndio"
3047 sndio_outdev_deps="sndio"
3048 v4l_indev_deps="linux_videodev_h"
3049 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3050 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3051 vfwcap_indev_deps="vfw32 vfwcap_defines"
3052 xcbgrab_indev_deps="libxcb"
3053 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3054 xv_outdev_extralibs="-lXv -lX11 -lXext"
3055
3056 # protocols
3057 async_protocol_deps="threads"
3058 bluray_protocol_deps="libbluray"
3059 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
3060 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3061 ffrtmpcrypt_protocol_select="tcp_protocol"
3062 ffrtmphttp_protocol_deps="!librtmp_protocol"
3063 ffrtmphttp_protocol_select="http_protocol"
3064 ftp_protocol_select="tcp_protocol"
3065 gopher_protocol_select="network"
3066 http_protocol_select="tcp_protocol"
3067 httpproxy_protocol_select="tcp_protocol"
3068 https_protocol_select="tls_protocol"
3069 icecast_protocol_select="http_protocol"
3070 librtmp_protocol_deps="librtmp"
3071 librtmpe_protocol_deps="librtmp"
3072 librtmps_protocol_deps="librtmp"
3073 librtmpt_protocol_deps="librtmp"
3074 librtmpte_protocol_deps="librtmp"
3075 libsmbclient_protocol_deps="libsmbclient gplv3"
3076 libssh_protocol_deps="libssh"
3077 mmsh_protocol_select="http_protocol"
3078 mmst_protocol_select="network"
3079 rtmp_protocol_deps="!librtmp_protocol"
3080 rtmp_protocol_select="tcp_protocol"
3081 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3082 rtmps_protocol_deps="!librtmp_protocol"
3083 rtmps_protocol_select="tls_protocol"
3084 rtmpt_protocol_select="ffrtmphttp_protocol"
3085 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3086 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3087 rtp_protocol_select="udp_protocol"
3088 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3089 sctp_protocol_select="network"
3090 srtp_protocol_select="rtp_protocol srtp"
3091 tcp_protocol_select="network"
3092 tls_gnutls_protocol_deps="gnutls !tls_schannel_protocol !tls_securetransport_protocol"
3093 tls_gnutls_protocol_select="tcp_protocol"
3094 tls_openssl_protocol_deps="openssl !tls_schannel_protocol !tls_securetransport_protocol !tls_gnutls_protocol"
3095 tls_openssl_protocol_select="tcp_protocol"
3096 tls_schannel_protocol_deps="schannel"
3097 tls_schannel_protocol_select="tcp_protocol"
3098 tls_securetransport_protocol_deps="securetransport"
3099 tls_securetransport_protocol_select="tcp_protocol"
3100 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
3101 udp_protocol_select="network"
3102 udplite_protocol_select="network"
3103 unix_protocol_deps="sys_un_h"
3104 unix_protocol_select="network"
3105
3106 # filters
3107 afftfilt_filter_deps="avcodec"
3108 afftfilt_filter_select="fft"
3109 afir_filter_deps="avcodec"
3110 afir_filter_select="fft"
3111 amovie_filter_deps="avcodec avformat"
3112 aresample_filter_deps="swresample"
3113 ass_filter_deps="libass"
3114 atempo_filter_deps="avcodec"
3115 atempo_filter_select="rdft"
3116 azmq_filter_deps="libzmq"
3117 blackframe_filter_deps="gpl"
3118 boxblur_filter_deps="gpl"
3119 bs2b_filter_deps="libbs2b"
3120 colormatrix_filter_deps="gpl"
3121 cover_rect_filter_deps="avcodec avformat gpl"
3122 cropdetect_filter_deps="gpl"
3123 deinterlace_qsv_filter_deps="libmfx"
3124 deinterlace_vaapi_filter_deps="vaapi"
3125 delogo_filter_deps="gpl"
3126 deshake_filter_select="pixelutils"
3127 drawtext_filter_deps="libfreetype"
3128 elbg_filter_deps="avcodec"
3129 eq_filter_deps="gpl"
3130 fftfilt_filter_deps="avcodec"
3131 fftfilt_filter_select="rdft"
3132 find_rect_filter_deps="avcodec avformat gpl"
3133 firequalizer_filter_deps="avcodec"
3134 firequalizer_filter_select="rdft"
3135 flite_filter_deps="libflite"
3136 framerate_filter_select="pixelutils"
3137 frei0r_filter_deps="frei0r dlopen"
3138 frei0r_src_filter_deps="frei0r dlopen"
3139 fspp_filter_deps="gpl"
3140 geq_filter_deps="gpl"
3141 histeq_filter_deps="gpl"
3142 hqdn3d_filter_deps="gpl"
3143 interlace_filter_deps="gpl"
3144 kerndeint_filter_deps="gpl"
3145 ladspa_filter_deps="ladspa dlopen"
3146 mcdeint_filter_deps="avcodec gpl"
3147 movie_filter_deps="avcodec avformat"
3148 mpdecimate_filter_deps="gpl"
3149 mpdecimate_filter_select="pixelutils"
3150 mptestsrc_filter_deps="gpl"
3151 negate_filter_deps="lut_filter"
3152 nnedi_filter_deps="gpl"
3153 ocr_filter_deps="libtesseract"
3154 ocv_filter_deps="libopencv"
3155 owdenoise_filter_deps="gpl"
3156 pan_filter_deps="swresample"
3157 perspective_filter_deps="gpl"
3158 phase_filter_deps="gpl"
3159 pp7_filter_deps="gpl"
3160 pp_filter_deps="gpl postproc"
3161 pullup_filter_deps="gpl"
3162 removelogo_filter_deps="avcodec avformat swscale"
3163 repeatfields_filter_deps="gpl"
3164 resample_filter_deps="avresample"
3165 rubberband_filter_deps="librubberband"
3166 sab_filter_deps="gpl swscale"
3167 scale2ref_filter_deps="swscale"
3168 scale_filter_deps="swscale"
3169 scale_qsv_filter_deps="libmfx"
3170 select_filter_select="pixelutils"
3171 showcqt_filter_deps="avcodec avformat swscale"
3172 showcqt_filter_select="fft"
3173 showfreqs_filter_deps="avcodec"
3174 showfreqs_filter_select="fft"
3175 showspectrum_filter_deps="avcodec"
3176 showspectrum_filter_select="fft"
3177 showspectrumpic_filter_deps="avcodec"
3178 showspectrumpic_filter_select="fft"
3179 signature_filter_deps="gpl avcodec avformat"
3180 smartblur_filter_deps="gpl swscale"
3181 sofalizer_filter_deps="libmysofa avcodec"
3182 sofalizer_filter_select="fft"
3183 spectrumsynth_filter_deps="avcodec"
3184 spectrumsynth_filter_select="fft"
3185 spp_filter_deps="gpl avcodec"
3186 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3187 stereo3d_filter_deps="gpl"
3188 subtitles_filter_deps="avformat avcodec libass"
3189 super2xsai_filter_deps="gpl"
3190 pixfmts_super2xsai_test_deps="super2xsai_filter"
3191 tinterlace_filter_deps="gpl"
3192 tinterlace_merge_test_deps="tinterlace_filter"
3193 tinterlace_pad_test_deps="tinterlace_filter"
3194 uspp_filter_deps="gpl avcodec"
3195 vaguedenoiser_filter_deps="gpl"
3196 vidstabdetect_filter_deps="libvidstab"
3197 vidstabtransform_filter_deps="libvidstab"
3198 libvmaf_filter_deps="libvmaf"
3199 zmq_filter_deps="libzmq"
3200 zoompan_filter_deps="swscale"
3201 zscale_filter_deps="libzimg"
3202 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3203
3204 # examples
3205 avio_dir_cmd_deps="avformat avutil"
3206 avio_reading_deps="avformat avcodec avutil"
3207 decode_audio_example_deps="avcodec avutil"
3208 decode_video_example_deps="avcodec avutil"
3209 demuxing_decoding_example_deps="avcodec avformat avutil"
3210 encode_audio_example_deps="avcodec avutil"
3211 encode_video_example_deps="avcodec avutil"
3212 extract_mvs_example_deps="avcodec avformat avutil"
3213 filter_audio_example_deps="avfilter avutil"
3214 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3215 filtering_video_example_deps="avfilter avcodec avformat avutil"
3216 http_multiclient_example_deps="avformat avutil fork"
3217 hw_decode_example_deps="avcodec avformat avutil"
3218 metadata_example_deps="avformat avutil"
3219 muxing_example_deps="avcodec avformat avutil swscale"
3220 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3221 remuxing_example_deps="avcodec avformat avutil"
3222 resampling_audio_example_deps="avutil swresample"
3223 scaling_video_example_deps="avutil swscale"
3224 transcode_aac_example_deps="avcodec avformat swresample"
3225 transcoding_example_deps="avfilter avcodec avformat avutil"
3226
3227 # libraries, in linking order
3228 avcodec_deps="avutil"
3229 avcodec_select="null_bsf"
3230 avdevice_deps="avformat avcodec avutil"
3231 avfilter_deps="avutil"
3232 avformat_deps="avcodec avutil"
3233 avresample_deps="avutil"
3234 postproc_deps="avutil gpl"
3235 swresample_deps="avutil"
3236 swscale_deps="avutil"
3237
3238 # programs
3239 ffmpeg_deps="avcodec avfilter avformat swresample"
3240 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3241                null_filter
3242                trim_filter"
3243 ffplay_deps="avcodec avformat swscale swresample sdl2"
3244 ffplay_extralibs='$sdl2_extralibs'
3245 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3246 ffprobe_deps="avcodec avformat"
3247 ffserver_deps="avformat fork sarestart"
3248 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3249
3250 # documentation
3251 podpages_deps="perl"
3252 manpages_deps="perl pod2man"
3253 htmlpages_deps="perl"
3254 htmlpages_deps_any="makeinfo_html texi2html"
3255 txtpages_deps="perl makeinfo"
3256 doc_deps_any="manpages htmlpages podpages txtpages"
3257
3258 # default parameters
3259
3260 logfile="ffbuild/config.log"
3261
3262 # installation paths
3263 prefix_default="/usr/local"
3264 bindir_default='${prefix}/bin'
3265 datadir_default='${prefix}/share/ffmpeg'
3266 docdir_default='${prefix}/share/doc/ffmpeg'
3267 incdir_default='${prefix}/include'
3268 libdir_default='${prefix}/lib'
3269 mandir_default='${prefix}/share/man'
3270
3271 # toolchain
3272 ar_default="ar"
3273 cc_default="gcc"
3274 cxx_default="g++"
3275 host_cc_default="gcc"
3276 doxygen_default="doxygen"
3277 install="install"
3278 ln_s_default="ln -s -f"
3279 nm_default="nm -g"
3280 pkg_config_default=pkg-config
3281 ranlib_default="ranlib"
3282 strip_default="strip"
3283 version_script='--version-script'
3284 x86asmexe_default="nasm"
3285 windres_default="windres"
3286 nvcc_default="nvcc"
3287 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3288
3289 # OS
3290 target_os_default=$(tolower $(uname -s))
3291 host_os=$target_os_default
3292
3293 # machine
3294 if test "$target_os_default" = aix; then
3295     arch_default=$(uname -p)
3296     strip_default="strip -X32_64"
3297 else
3298     arch_default=$(uname -m)
3299 fi
3300 cpu="generic"
3301 intrinsics="none"
3302
3303 # configurable options
3304 enable $PROGRAM_LIST
3305 enable $DOCUMENT_LIST
3306 enable $EXAMPLE_LIST
3307 enable $(filter_out avresample $LIBRARY_LIST)
3308 enable stripping
3309
3310 enable asm
3311 enable debug
3312 enable doc
3313 enable faan faandct faanidct
3314 enable optimizations
3315 enable runtime_cpudetect
3316 enable safe_bitstream_reader
3317 enable static
3318 enable swscale_alpha
3319 enable valgrind_backtrace
3320
3321 sws_max_filter_size_default=256
3322 set_default sws_max_filter_size
3323
3324 # build settings
3325 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3326 LIBPREF="lib"
3327 LIBSUF=".a"
3328 FULLNAME='$(NAME)$(BUILDSUF)'
3329 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3330 SLIBPREF="lib"
3331 SLIBSUF=".so"
3332 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3333 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3334 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3335 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3336 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3337 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3338 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3339
3340 asflags_filter=echo
3341 cflags_filter=echo
3342 ldflags_filter=echo
3343
3344 AS_C='-c'
3345 AS_O='-o $@'
3346 CC_C='-c'
3347 CC_E='-E -o $@'
3348 CC_O='-o $@'
3349 CXX_C='-c'
3350 CXX_O='-o $@'
3351 OBJCC_C='-c'
3352 OBJCC_E='-E -o $@'
3353 OBJCC_O='-o $@'
3354 X86ASM_O='-o $@'
3355 LD_O='-o $@'
3356 LD_LIB='-l%'
3357 LD_PATH='-L'
3358 HOSTCC_C='-c'
3359 HOSTCC_E='-E -o $@'
3360 HOSTCC_O='-o $@'
3361 HOSTLD_O='-o $@'
3362 NVCC_C='-c'
3363 NVCC_O='-o $@'
3364
3365 host_extralibs='-lm'
3366 host_cflags_filter=echo
3367 host_ldflags_filter=echo
3368
3369 target_path='$(CURDIR)'
3370
3371 # since the object filename is not given with the -MM flag, the compiler
3372 # is only able to print the basename, and we must add the path ourselves
3373 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3374 DEPFLAGS='-MM'
3375
3376 mkdir -p ffbuild
3377
3378 # find source path
3379 if test -f configure; then
3380     source_path=.
3381 else
3382     source_path=$(cd $(dirname "$0"); pwd)
3383     case "$source_path" in
3384         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3385     esac
3386     test -e "$source_path/config.h" &&
3387         die "Out of tree builds are impossible with config.h in source dir."
3388 fi
3389
3390 for v in "$@"; do
3391     r=${v#*=}
3392     l=${v%"$r"}
3393     r=$(sh_quote "$r")
3394     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3395 done
3396
3397 find_things(){
3398     thing=$1
3399     pattern=$2
3400     file=$source_path/$3
3401     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3402 }
3403
3404 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3405 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3406 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3407 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3408 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3409 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3410 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3411 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3412 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3413
3414 find_things_extern(){
3415     thing=$1
3416     pattern=$2
3417     file=$source_path/$3
3418     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3419 }
3420
3421 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3422 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3423
3424 ALL_COMPONENTS="
3425     $BSF_LIST
3426     $DECODER_LIST
3427     $DEMUXER_LIST
3428     $ENCODER_LIST
3429     $FILTER_LIST
3430     $HWACCEL_LIST
3431     $INDEV_LIST
3432     $MUXER_LIST
3433     $OUTDEV_LIST
3434     $PARSER_LIST
3435     $PROTOCOL_LIST
3436 "
3437
3438 for n in $COMPONENT_LIST; do
3439     v=$(toupper ${n%s})_LIST
3440     eval enable \$$v
3441     eval ${n}_if_any="\$$v"
3442 done
3443
3444 enable $ARCH_EXT_LIST
3445
3446 die_unknown(){
3447     echo "Unknown option \"$1\"."
3448     echo "See $0 --help for available options."
3449     exit 1
3450 }
3451
3452 print_in_columns() {
3453     cols=$(expr $ncols / 24)
3454     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3455 }
3456
3457 show_list() {
3458     suffix=_$1
3459     shift
3460     echo $* | sed s/$suffix//g | print_in_columns
3461     exit 0
3462 }
3463
3464 rand_list(){
3465     IFS=', '
3466     set -- $*
3467     unset IFS
3468     for thing; do
3469         comp=${thing%:*}
3470         prob=${thing#$comp}
3471         prob=${prob#:}
3472         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3473         echo "prob ${prob:-0.5}"
3474         printf '%s\n' $comp
3475     done
3476 }
3477
3478 do_random(){
3479     action=$1
3480     shift
3481     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3482     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3483 }
3484
3485 for opt do
3486     optval="${opt#*=}"
3487     case "$opt" in
3488         --extra-ldflags=*)
3489             add_ldflags $optval
3490         ;;
3491         --extra-ldexeflags=*)
3492             add_ldexeflags $optval
3493         ;;
3494         --extra-ldlibflags=*)
3495             add_ldlibflags $optval
3496         ;;
3497         --extra-libs=*)
3498             add_extralibs $optval
3499         ;;
3500         --disable-devices)
3501             disable $INDEV_LIST $OUTDEV_LIST
3502         ;;
3503         --enable-debug=*)
3504             debuglevel="$optval"
3505         ;;
3506         --disable-programs)
3507             disable $PROGRAM_LIST
3508         ;;
3509         --disable-everything)
3510             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3511         ;;
3512         --disable-all)
3513             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3514             disable $LIBRARY_LIST $PROGRAM_LIST doc
3515             enable avutil
3516         ;;
3517         --enable-random|--disable-random)
3518             action=${opt%%-random}
3519             do_random ${action#--} $COMPONENT_LIST
3520         ;;
3521         --enable-random=*|--disable-random=*)
3522             action=${opt%%-random=*}
3523             do_random ${action#--} $optval
3524         ;;
3525         --enable-sdl)
3526             enable sdl2
3527         ;;
3528         --enable-*=*|--disable-*=*)
3529             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3530             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3531             eval list=\$$(toupper $thing)_LIST
3532             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3533             list=$(filter "$name" $list)
3534             [ "$list" = "" ] && warn "Option $opt did not match anything"
3535             $action $list
3536         ;;
3537         --enable-yasm|--disable-yasm)
3538             warn "The ${opt} option is only provided for compatibility and will be\n"\
3539                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3540             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3541         ;;
3542         --yasmexe=*)
3543             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3544                  "removed in the future. Use --x86asmexe instead."
3545             x86asmexe="$optval"
3546         ;;
3547         --enable-?*|--disable-?*)
3548             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3549             if is_in $option $COMPONENT_LIST; then
3550                 test $action = disable && action=unset
3551                 eval $action \$$(toupper ${option%s})_LIST
3552             elif is_in $option $CMDLINE_SELECT; then
3553                 $action $option
3554             else
3555                 die_unknown $opt
3556             fi
3557         ;;
3558         --list-*)
3559             NAME="${opt#--list-}"
3560             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3561             NAME=${NAME%s}
3562             eval show_list $NAME \$$(toupper $NAME)_LIST
3563         ;;
3564         --help|-h) show_help
3565         ;;
3566         --quiet|-q) quiet=yes
3567         ;;
3568         --fatal-warnings) enable fatal_warnings
3569         ;;
3570         --libfuzzer=*)
3571             libfuzzer_path="$optval"
3572         ;;
3573         *)
3574             optname="${opt%%=*}"
3575             optname="${optname#--}"
3576             optname=$(echo "$optname" | sed 's/-/_/g')
3577             if is_in $optname $CMDLINE_SET; then
3578                 eval $optname='$optval'
3579             elif is_in $optname $CMDLINE_APPEND; then
3580                 append $optname "$optval"
3581             else
3582                 die_unknown $opt
3583             fi
3584         ;;
3585     esac
3586 done
3587
3588 for e in $env; do
3589     eval "export $e"
3590 done
3591
3592 # Mark specifically enabled, but normally autodetected libraries as requested.
3593 for lib in $AUTODETECT_LIBS; do
3594     enabled $lib && request $lib
3595 done
3596
3597 # Enable platform codecs by default.
3598 enable_weak audiotoolbox
3599
3600 # Enable hwaccels by default.
3601 enable_weak crystalhd d3d11va dxva2 vaapi vda vdpau videotoolbox_hwaccel xvmc
3602 enable_weak xlib libxcb libxcb_shm libxcb_shape libxcb_xfixes
3603
3604 enable_weak cuda cuvid nvenc videotoolbox videotoolbox_encoder
3605
3606 # Enable compression/decompression libraries by default
3607 enable_weak zlib bzlib lzma
3608
3609 enable_weak iconv
3610 enable_weak securetransport schannel
3611
3612 disabled logging && logfile=/dev/null
3613
3614 die_license_disabled() {
3615     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3616 }
3617
3618 die_license_disabled_gpl() {
3619     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3620 }
3621
3622 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3623 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3624
3625 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3626 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3627
3628 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3629
3630 # Disable all the library-specific components if the library itself
3631 # is disabled, see AVCODEC_LIST and following _LIST variables.
3632
3633 disable_components(){
3634     disabled ${1} && disable $(
3635         eval components="\$$(toupper ${1})_COMPONENTS"
3636         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3637     )
3638 }
3639
3640 map 'disable_components $v' $LIBRARY_LIST
3641
3642 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3643 set >> $logfile
3644
3645 test -n "$valgrind" && toolchain="valgrind-memcheck"
3646
3647 enabled ossfuzz && {
3648     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
3649     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
3650 }
3651
3652 case "$toolchain" in
3653     *-asan)
3654         cc_default="${toolchain%-asan}"
3655         add_cflags  -fsanitize=address
3656         add_ldflags -fsanitize=address
3657     ;;
3658     *-msan)
3659         cc_default="${toolchain%-msan}"
3660         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3661         add_ldflags -fsanitize=memory
3662     ;;
3663     *-tsan)
3664         cc_default="${toolchain%-tsan}"
3665         add_cflags  -fsanitize=thread -fPIE
3666         add_ldflags -fsanitize=thread -pie
3667         case "$toolchain" in
3668             gcc-tsan)
3669                 add_cflags  -fPIC
3670                 add_ldflags -fPIC
3671                 ;;
3672         esac
3673     ;;
3674     *-usan)
3675         cc_default="${toolchain%-usan}"
3676         add_cflags  -fsanitize=undefined
3677         add_ldflags -fsanitize=undefined
3678     ;;
3679     valgrind-*)
3680         target_exec_default="valgrind"
3681         case "$toolchain" in
3682             valgrind-massif)
3683                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3684                 ;;
3685             valgrind-memcheck)
3686                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3687                 ;;
3688         esac
3689     ;;
3690     msvc)
3691         # Check whether the current MSVC version needs the C99 converter.
3692         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3693         # support enough of C99 to build ffmpeg. Default to the new
3694         # behaviour if the regexp was unable to match anything, since this
3695         # successfully parses the version number of existing supported
3696         # versions that require the converter (MSVC 2010 and 2012).
3697         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3698         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3699             cc_default="cl"
3700             cxx_default="cl"
3701         else
3702             cc_default="c99wrap cl"
3703             cxx_default="c99wrap cl"
3704         fi
3705         ld_default="$source_path/compat/windows/mslink"
3706         nm_default="dumpbin -symbols"
3707         ar_default="lib"
3708         case "$arch" in
3709         arm*)
3710             as_default="armasm"
3711             ;;
3712         esac
3713         target_os_default="win32"
3714         # Use a relative path for TMPDIR. This makes sure all the
3715         # ffconf temp files are written with a relative path, avoiding
3716         # issues with msys/win32 path conversion for MSVC parameters
3717         # such as -Fo<file> or -out:<file>.
3718         TMPDIR=.
3719     ;;
3720     icl)
3721         cc_default="icl"
3722         ld_default="xilink"
3723         nm_default="dumpbin -symbols"
3724         ar_default="xilib"
3725         target_os_default="win32"
3726         TMPDIR=.
3727     ;;
3728     gcov)
3729         add_cflags  -fprofile-arcs -ftest-coverage
3730         add_ldflags -fprofile-arcs -ftest-coverage
3731     ;;
3732     llvm-cov)
3733         add_cflags -fprofile-arcs -ftest-coverage
3734         add_ldflags --coverage
3735     ;;
3736     hardened)
3737         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3738         add_cflags   -fno-strict-overflow -fstack-protector-all
3739         add_ldflags  -Wl,-z,relro -Wl,-z,now
3740         add_cflags   -fPIE
3741         add_ldexeflags -fPIE -pie
3742     ;;
3743     ?*)
3744         die "Unknown toolchain $toolchain"
3745     ;;
3746 esac
3747
3748 test -n "$cross_prefix" && enable cross_compile
3749
3750 if enabled cross_compile; then
3751     test -n "$arch" && test -n "$target_os" ||
3752         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3753 fi
3754
3755 ar_default="${cross_prefix}${ar_default}"
3756 cc_default="${cross_prefix}${cc_default}"
3757 cxx_default="${cross_prefix}${cxx_default}"
3758 nm_default="${cross_prefix}${nm_default}"
3759 pkg_config_default="${cross_prefix}${pkg_config_default}"
3760 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3761     ranlib_default="${cross_prefix}${ranlib_default} -D"
3762 else
3763     ranlib_default="${cross_prefix}${ranlib_default}"
3764 fi
3765 strip_default="${cross_prefix}${strip_default}"
3766 windres_default="${cross_prefix}${windres_default}"
3767
3768 sysinclude_default="${sysroot}/usr/include"
3769
3770 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3771     target_exec target_os x86asmexe nvcc
3772 enabled cross_compile || host_cc_default=$cc
3773 set_default host_cc
3774
3775 pkg_config_fail_message=""
3776 if ! $pkg_config --version >/dev/null 2>&1; then
3777     warn "$pkg_config not found, library detection may fail."
3778     pkg_config=false
3779 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3780     pkg_config_fail_message="
3781 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3782 fi
3783
3784 if test $doxygen != $doxygen_default && \
3785   ! $doxygen --version >/dev/null 2>&1; then
3786     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3787 fi
3788
3789 exesuf() {
3790     case $1 in
3791         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3792     esac
3793 }
3794
3795 EXESUF=$(exesuf $target_os)
3796 HOSTEXESUF=$(exesuf $host_os)
3797
3798 # set temporary file name
3799 : ${TMPDIR:=$TEMPDIR}
3800 : ${TMPDIR:=$TMP}
3801 : ${TMPDIR:=/tmp}
3802
3803 if [ -n "$tempprefix" ] ; then
3804     mktemp(){
3805         tmpname="$tempprefix.${HOSTNAME}.${UID}"
3806         echo "$tmpname"
3807         mkdir "$tmpname"
3808     }
3809 elif ! check_cmd mktemp -u XXXXXX; then
3810     # simple replacement for missing mktemp
3811     # NOT SAFE FOR GENERAL USE
3812     mktemp(){
3813         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3814         echo "$tmpname"
3815         mkdir "$tmpname"
3816     }
3817 fi
3818
3819 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
3820     die "Unable to create temporary directory in $TMPDIR."
3821
3822 tmpfile(){
3823     tmp="${FFTMPDIR}/test"$2
3824     (set -C; exec > $tmp) 2> /dev/null ||
3825         die "Unable to create temporary file in $FFTMPDIR."
3826     eval $1=$tmp
3827 }
3828
3829 trap 'rm -rf -- "$FFTMPDIR"' EXIT
3830 trap 'exit 2' INT
3831
3832 tmpfile TMPASM .asm
3833 tmpfile TMPC   .c
3834 tmpfile TMPCPP .cpp
3835 tmpfile TMPE   $EXESUF
3836 tmpfile TMPH   .h
3837 tmpfile TMPM   .m
3838 tmpfile TMPO   .o
3839 tmpfile TMPS   .S
3840 tmpfile TMPSH  .sh
3841 tmpfile TMPV   .ver
3842
3843 unset -f mktemp
3844
3845 chmod +x $TMPE
3846
3847 # make sure we can execute files in $TMPDIR
3848 cat > $TMPSH 2>> $logfile <<EOF
3849 #! /bin/sh
3850 EOF
3851 chmod +x $TMPSH >> $logfile 2>&1
3852 if ! $TMPSH >> $logfile 2>&1; then
3853     cat <<EOF
3854 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3855 variable to another directory and make sure that it is not mounted noexec.
3856 EOF
3857     die "Sanity test failed."
3858 fi
3859
3860 armasm_flags(){
3861     for flag; do
3862         case $flag in
3863             # Filter out MSVC cl.exe options from cflags that shouldn't
3864             # be passed to gas-preprocessor
3865             -M[TD]*)                                            ;;
3866             *)                  echo $flag                      ;;
3867         esac
3868    done
3869 }
3870
3871 ccc_flags(){
3872     for flag; do
3873         case $flag in
3874             -std=c99)           echo -c99                       ;;
3875             -mcpu=*)            echo -arch ${flag#*=}           ;;
3876             -mieee)             echo -ieee                      ;;
3877             -O*|-fast)          echo $flag                      ;;
3878             -fno-math-errno)    echo -assume nomath_errno       ;;
3879             -g)                 echo -g3                        ;;
3880             -Wall)              echo -msg_enable level2         ;;
3881             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3882             -Wl,*)              echo $flag                      ;;
3883             -f*|-W*)                                            ;;
3884             *)                  echo $flag                      ;;
3885         esac
3886    done
3887 }
3888
3889 cparser_flags(){
3890     for flag; do
3891         case $flag in
3892             -Wno-switch)             echo -Wno-switch-enum ;;
3893             -Wno-format-zero-length) ;;
3894             -Wdisabled-optimization) ;;
3895             -Wno-pointer-sign)       echo -Wno-other ;;
3896             *)                       echo $flag ;;
3897         esac
3898     done
3899 }
3900
3901 msvc_common_flags(){
3902     for flag; do
3903         case $flag in
3904             # In addition to specifying certain flags under the compiler
3905             # specific filters, they must be specified here as well or else the
3906             # generic catch all at the bottom will print the original flag.
3907             -Wall)                ;;
3908             -Wextra)              ;;
3909             -std=c99)             ;;
3910             # Common flags
3911             -fomit-frame-pointer) ;;
3912             -g)                   echo -Z7 ;;
3913             -fno-math-errno)      ;;
3914             -fno-common)          ;;
3915             -fno-signed-zeros)    ;;
3916             -fPIC)                ;;
3917             -mthumb)              ;;
3918             -march=*)             ;;
3919             -lz)                  echo zlib.lib ;;
3920             -lx264)               echo libx264.lib ;;
3921             -lstdc++)             ;;
3922             -l*)                  echo ${flag#-l}.lib ;;
3923             -LARGEADDRESSAWARE)   echo $flag ;;
3924             -L*)                  echo -libpath:${flag#-L} ;;
3925             *)                    echo $flag ;;
3926         esac
3927     done
3928 }
3929
3930 msvc_flags(){
3931     msvc_common_flags "$@"
3932     for flag; do
3933         case $flag in
3934             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
3935                                        -wd4554 ;;
3936             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3937                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3938                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3939                                        -wd4307 \
3940                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
3941         esac
3942     done
3943 }
3944
3945 icl_flags(){
3946     msvc_common_flags "$@"
3947     for flag; do
3948         case $flag in
3949             # Despite what Intel's documentation says -Wall, which is supported
3950             # on Windows, does enable remarks so disable them here.
3951             -Wall)                echo $flag -Qdiag-disable:remark ;;
3952             -std=c99)             echo -Qstd=c99 ;;
3953             -flto)                echo -ipo ;;
3954         esac
3955     done
3956 }
3957
3958 icc_flags(){
3959     for flag; do
3960         case $flag in
3961             -flto)                echo -ipo ;;
3962             *)                    echo $flag ;;
3963         esac
3964     done
3965 }
3966
3967 pgi_flags(){
3968     for flag; do
3969         case $flag in
3970             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3971             -fomit-frame-pointer) echo -Mnoframe ;;
3972             -g)                   echo -gopt ;;
3973             *)                    echo $flag ;;
3974         esac
3975     done
3976 }
3977
3978 suncc_flags(){
3979     for flag; do
3980         case $flag in
3981             -march=*|-mcpu=*)
3982                 case "${flag#*=}" in
3983                     native)                   echo -xtarget=native       ;;
3984                     v9|niagara)               echo -xarch=sparc          ;;
3985                     ultrasparc)               echo -xarch=sparcvis       ;;
3986                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3987                     i586|pentium)             echo -xchip=pentium        ;;
3988                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3989                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3990                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3991                     pentium4*)          echo -xtarget=pentium4           ;;
3992                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3993                     *-sse3)             echo -xarch=sse3                 ;;
3994                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3995                     bonnell)                   echo -xarch=ssse3         ;;
3996                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3997                     westmere)                  echo -xtarget=westmere    ;;
3998                     silvermont)                echo -xarch=sse4_2        ;;
3999                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
4000                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
4001                                                echo -xarch=avx           ;;
4002                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
4003                     btver1)                    echo -xarch=amdsse4a      ;;
4004                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
4005                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
4006                     k8|opteron|athlon64|athlon-fx)
4007                                                echo -xarch=sse2a         ;;
4008                     athlon*)                   echo -xarch=pentium_proa  ;;
4009                 esac
4010                 ;;
4011             -std=c99)             echo -xc99              ;;
4012             -fomit-frame-pointer) echo -xregs=frameptr    ;;
4013             -fPIC)                echo -KPIC -xcode=pic32 ;;
4014             -W*,*)                echo $flag              ;;
4015             -f*-*|-W*|-mimpure-text)                      ;;
4016             -shared)              echo -G                 ;;
4017             *)                    echo $flag              ;;
4018         esac
4019     done
4020 }
4021
4022 tms470_flags(){
4023     for flag; do
4024         case $flag in
4025             -march=*|-mcpu=*)
4026                 case "${flag#*=}" in
4027                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
4028                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
4029                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
4030                     armv6*|arm11*)          echo -mv=6   ;;
4031                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
4032                                             echo -mv=5e  ;;
4033                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
4034                 esac
4035                 ;;
4036             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
4037             -mfpu=vfp)      echo --float_support=vfpv2        ;;
4038             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
4039             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
4040             -msoft-float)   echo --float_support=vfplib       ;;
4041             -O[0-3]|-mf=*)  echo $flag                        ;;
4042             -g)             echo -g -mn                       ;;
4043             -pds=*)         echo $flag                        ;;
4044             -D*|-I*)        echo $flag                        ;;
4045             --gcc|--abi=*)  echo $flag                        ;;
4046             -me)            echo $flag                        ;;
4047         esac
4048     done
4049 }
4050
4051 probe_cc(){
4052     pfx=$1
4053     _cc=$2
4054     first=$3
4055
4056     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4057     unset _ld_o _ldflags _ld_lib _ld_path
4058     unset _depflags _DEPCMD _DEPFLAGS
4059     _flags_filter=echo
4060
4061     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4062         true # no-op to avoid reading stdin in following checks
4063     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4064         _type=llvm_gcc
4065         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4066         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4067         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4068         _cflags_speed='-O3'
4069         _cflags_size='-Os'
4070     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4071         _type=gcc
4072         gcc_version=$($_cc --version | head -n1)
4073         gcc_basever=$($_cc -dumpversion)
4074         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4075         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4076         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4077         case $gcc_basever in
4078             2) ;;
4079             2.*) ;;
4080             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4081         esac
4082         if [ "$first" = true ]; then
4083             case $gcc_basever in
4084                 4.2*)
4085                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4086             esac
4087         fi
4088         _cflags_speed='-O3'
4089         _cflags_size='-Os'
4090     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4091         _type=icc
4092         _ident=$($_cc --version | head -n1)
4093         _depflags='-MMD'
4094         _cflags_speed='-O3'
4095         _cflags_size='-Os'
4096         _cflags_noopt='-O1'
4097         _flags_filter=icc_flags
4098     elif $_cc -v 2>&1 | grep -q xlc; then
4099         _type=xlc
4100         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4101         _cflags_speed='-O5'
4102         _cflags_size='-O5 -qcompact'
4103     elif $_cc -V 2>/dev/null | grep -q Compaq; then
4104         _type=ccc
4105         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
4106         _DEPFLAGS='-M'
4107         _cflags_speed='-fast'
4108         _cflags_size='-O1'
4109         _flags_filter=ccc_flags
4110     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4111         test -d "$sysroot" || die "No valid sysroot specified."
4112         _type=armcc
4113         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4114         armcc_conf="$PWD/armcc.conf"
4115         $_cc --arm_linux_configure                 \
4116              --arm_linux_config_file="$armcc_conf" \
4117              --configure_sysroot="$sysroot"        \
4118              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4119              die "Error creating armcc configuration file."
4120         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4121         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4122         as_default="${cross_prefix}gcc"
4123         _depflags='-MMD'
4124         _cflags_speed='-O3'
4125         _cflags_size='-Os'
4126     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
4127         _type=tms470
4128         _ident=$($_cc -version | head -n1 | tr -s ' ')
4129         _flags='--gcc --abi=eabi -me'
4130         _cc_e='-ppl -fe=$@'
4131         _cc_o='-fe=$@'
4132         _depflags='-ppa -ppd=$(@:.o=.d)'
4133         _cflags_speed='-O3 -mf=5'
4134         _cflags_size='-O3 -mf=2'
4135         _flags_filter=tms470_flags
4136     elif $_cc -v 2>&1 | grep -q clang; then
4137         _type=clang
4138         _ident=$($_cc --version 2>/dev/null | head -n1)
4139         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4140         _cflags_speed='-O3'
4141         _cflags_size='-Oz'
4142     elif $_cc -V 2>&1 | grep -q Sun; then
4143         _type=suncc
4144         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4145         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4146         _DEPFLAGS='-xM1 -xc99'
4147         _ldflags='-std=c99'
4148         _cflags_speed='-O5'
4149         _cflags_size='-O5 -xspace'
4150         _flags_filter=suncc_flags
4151     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4152         _type=pathscale
4153         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4154         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4155         _cflags_speed='-O2'
4156         _cflags_size='-Os'
4157         _flags_filter='filter_out -Wdisabled-optimization'
4158     elif $_cc -v 2>&1 | grep -q Open64; then
4159         _type=open64
4160         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4161         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4162         _cflags_speed='-O2'
4163         _cflags_size='-Os'
4164         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4165     elif $_cc -V 2>&1 | grep -q Portland; then
4166         _type=pgi
4167         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
4168         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
4169         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
4170         _cflags_size="-O2 -Munroll=c:1 $opt_common"
4171         _cflags_noopt="-O"
4172         _flags_filter=pgi_flags
4173     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4174         _type=armasm
4175         _ident=$($_cc | head -n1)
4176         # 4509: "This form of conditional instruction is deprecated"
4177         _flags="-nologo -ignore 4509"
4178         _flags_filter=armasm_flags
4179     elif $_cc 2>&1 | grep -q Intel; then
4180         _type=icl
4181         _ident=$($_cc 2>&1 | head -n1)
4182         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4183         # Not only is O3 broken on 13.x+ but it is slower on all previous
4184         # versions (tested) as well.
4185         _cflags_speed="-O2"
4186         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4187         if $_cc 2>&1 | grep -q Linker; then
4188             _ld_o='-out:$@'
4189         else
4190             _ld_o='-Fe$@'
4191         fi
4192         _cc_o='-Fo$@'
4193         _cc_e='-P'
4194         _flags_filter=icl_flags
4195         _ld_lib='lib%.a'
4196         _ld_path='-libpath:'
4197         # -Qdiag-error to make icl error when seeing certain unknown arguments
4198         _flags='-nologo -Qdiag-error:4044,10157'
4199         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4200         # with MSVC which enables it by default.
4201         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4202         disable stripping
4203     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4204         # lld can emulate multiple different linkers; in ms link.exe mode,
4205         # the -? parameter gives the help output which contains an identifyable
4206         # string, while it gives an error in other modes.
4207         _type=lld-link
4208         # The link.exe mode doesn't have a switch for getting the version,
4209         # but we can force it back to gnu mode and get the version from there.
4210         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4211         _ld_o='-out:$@'
4212         _flags_filter=msvc_flags
4213         _ld_lib='lib%.a'
4214         _ld_path='-libpath:'
4215     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4216         _type=msvc
4217         _ident=$($_cc 2>&1 | head -n1)
4218         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4219         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4220         _cflags_speed="-O2"
4221         _cflags_size="-O1"
4222         _cflags_noopt="-O1"
4223         if $_cc -nologo- 2>&1 | grep -q Linker; then
4224             _ld_o='-out:$@'
4225         else
4226             _ld_o='-Fe$@'
4227         fi
4228         _cc_o='-Fo$@'
4229         _cc_e='-P -Fi$@'
4230         _flags_filter=msvc_flags
4231         _ld_lib='lib%.a'
4232         _ld_path='-libpath:'
4233         _flags='-nologo'
4234         disable stripping
4235     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4236         _type=cparser
4237         _ident=$($_cc --version | head -n1)
4238         _depflags='-MMD'
4239         _cflags_speed='-O4'
4240         _cflags_size='-O2'
4241         _flags_filter=cparser_flags
4242     fi
4243
4244     eval ${pfx}_type=\$_type
4245     eval ${pfx}_ident=\$_ident
4246 }
4247
4248 set_ccvars(){
4249     eval ${1}_C=\${_cc_c-\${${1}_C}}
4250     eval ${1}_E=\${_cc_e-\${${1}_E}}
4251     eval ${1}_O=\${_cc_o-\${${1}_O}}
4252
4253     if [ -n "$_depflags" ]; then
4254         eval ${1}_DEPFLAGS=\$_depflags
4255     else
4256         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4257         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4258         eval DEP${1}FLAGS=\$_flags
4259     fi
4260 }
4261
4262 probe_cc cc "$cc" "true"
4263 cflags_filter=$_flags_filter
4264 cflags_speed=$_cflags_speed
4265 cflags_size=$_cflags_size
4266 cflags_noopt=$_cflags_noopt
4267 add_cflags $_flags $_cflags
4268 cc_ldflags=$_ldflags
4269 set_ccvars CC
4270 set_ccvars CXX
4271
4272 probe_cc hostcc "$host_cc"
4273 host_cflags_filter=$_flags_filter
4274 host_cflags_speed=$_cflags_speed
4275 add_host_cflags  $_flags $_cflags
4276 set_ccvars HOSTCC
4277
4278 test -n "$cc_type" && enable $cc_type ||
4279     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4280
4281 : ${as_default:=$cc}
4282 : ${objcc_default:=$cc}
4283 : ${dep_cc_default:=$cc}
4284 : ${ld_default:=$cc}
4285 : ${host_ld_default:=$host_cc}
4286 set_default ar as objcc dep_cc ld ln_s host_ld windres
4287
4288 probe_cc as "$as"
4289 asflags_filter=$_flags_filter
4290 add_asflags $_flags $_cflags
4291 set_ccvars AS
4292
4293 probe_cc objcc "$objcc"
4294 objcflags_filter=$_flags_filter
4295 add_objcflags $_flags $_cflags
4296 set_ccvars OBJC
4297
4298 probe_cc ld "$ld"
4299 ldflags_filter=$_flags_filter
4300 add_ldflags $_flags $_ldflags
4301 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4302 LD_O=${_ld_o-$LD_O}
4303 LD_LIB=${_ld_lib-$LD_LIB}
4304 LD_PATH=${_ld_path-$LD_PATH}
4305
4306 probe_cc hostld "$host_ld"
4307 host_ldflags_filter=$_flags_filter
4308 add_host_ldflags $_flags $_ldflags
4309 HOSTLD_O=${_ld_o-$HOSTLD_O}
4310
4311 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4312     probe_cc depcc "$dep_cc"
4313     CCDEP=${_DEPCMD:-$DEPCMD}
4314     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4315     DEPCCFLAGS=$_flags
4316 fi
4317
4318 if $ar 2>&1 | grep -q Microsoft; then
4319     arflags="-nologo"
4320     ar_o='-out:$@'
4321 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
4322     arflags="rq"
4323     ar_o='$@'
4324 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
4325     arflags='-Xany -r -c'
4326     ar_o='$@'
4327 elif $ar 2>&1 | grep -q "\[D\] "; then
4328     arflags="rcD"
4329     ar_o='$@'
4330 else
4331     arflags="rc"
4332     ar_o='$@'
4333 fi
4334
4335 add_cflags $extra_cflags
4336 add_cxxflags $extra_cxxflags
4337 add_objcflags $extra_objcflags
4338 add_asflags $extra_cflags
4339
4340 if test -n "$sysroot"; then
4341     case "$cc_type" in
4342         gcc|llvm_gcc|clang)
4343             add_cppflags --sysroot="$sysroot"
4344             add_ldflags --sysroot="$sysroot"
4345 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
4346             add_cppflags -isysroot "$sysroot"
4347             add_ldflags -isysroot "$sysroot"
4348         ;;
4349         tms470)
4350             add_cppflags -I"$sysinclude"
4351             add_ldflags  --sysroot="$sysroot"
4352         ;;
4353     esac
4354 fi
4355
4356 if test "$cpu" = host; then
4357     enabled cross_compile &&
4358         die "--cpu=host makes no sense when cross-compiling."
4359
4360     case "$cc_type" in
4361         gcc|llvm_gcc)
4362             check_native(){
4363                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4364                 sed -n "/cc1.*$1=/{
4365                             s/.*$1=\\([^ ]*\\).*/\\1/
4366                             p
4367                             q
4368                         }" $TMPE
4369             }
4370             cpu=$(check_native -march || check_native -mcpu)
4371         ;;
4372         clang)
4373             check_native(){
4374                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4375                 sed -n "/cc1.*-target-cpu /{
4376                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4377                             p
4378                             q
4379                         }" $TMPE
4380             }
4381             cpu=$(check_native -march)
4382         ;;
4383     esac
4384
4385     test "${cpu:-host}" = host &&
4386         die "--cpu=host not supported with compiler $cc"
4387 fi
4388
4389 # Deal with common $arch aliases
4390 case "$arch" in
4391     aarch64|arm64)
4392         arch="aarch64"
4393     ;;
4394     arm*|iPad*|iPhone*)
4395         arch="arm"
4396     ;;
4397     mips*|IP*)
4398         case "$arch" in
4399         *el)
4400             add_cppflags -EL
4401             add_ldflags -EL
4402         ;;
4403         *eb)
4404             add_cppflags -EB
4405             add_ldflags -EB
4406         ;;
4407         esac
4408         arch="mips"
4409     ;;
4410     parisc*|hppa*)
4411         arch="parisc"
4412     ;;
4413     "Power Macintosh"|ppc*|powerpc*)
4414         arch="ppc"
4415     ;;
4416     s390|s390x)
4417         arch="s390"
4418     ;;
4419     sh4|sh)
4420         arch="sh4"
4421     ;;
4422     sun4*|sparc*)
4423         arch="sparc"
4424     ;;
4425     tilegx|tile-gx)
4426         arch="tilegx"
4427     ;;
4428     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4429         arch="x86"
4430     ;;
4431 esac
4432
4433 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4434 enable $arch
4435
4436 # Add processor-specific flags
4437 if enabled aarch64; then
4438
4439     case $cpu in
4440         armv*)
4441             cpuflags="-march=$cpu"
4442         ;;
4443         *)
4444             cpuflags="-mcpu=$cpu"
4445         ;;
4446     esac
4447
4448 elif enabled alpha; then
4449
4450     cpuflags="-mcpu=$cpu"
4451
4452 elif enabled arm; then
4453
4454     check_arm_arch() {
4455         check_cpp_condition stddef.h \
4456             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4457             $cpuflags
4458     }
4459
4460     probe_arm_arch() {
4461         if   check_arm_arch 4;        then echo armv4
4462         elif check_arm_arch 4T;       then echo armv4t
4463         elif check_arm_arch 5;        then echo armv5
4464         elif check_arm_arch 5E;       then echo armv5e
4465         elif check_arm_arch 5T;       then echo armv5t
4466         elif check_arm_arch 5TE;      then echo armv5te
4467         elif check_arm_arch 5TEJ;     then echo armv5te
4468         elif check_arm_arch 6;        then echo armv6
4469         elif check_arm_arch 6J;       then echo armv6j
4470         elif check_arm_arch 6K;       then echo armv6k
4471         elif check_arm_arch 6Z;       then echo armv6z
4472         elif check_arm_arch 6ZK;      then echo armv6zk
4473         elif check_arm_arch 6T2;      then echo armv6t2
4474         elif check_arm_arch 7;        then echo armv7
4475         elif check_arm_arch 7A  7_A;  then echo armv7-a
4476         elif check_arm_arch 7S;       then echo armv7-a
4477         elif check_arm_arch 7R  7_R;  then echo armv7-r
4478         elif check_arm_arch 7M  7_M;  then echo armv7-m
4479         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4480         elif check_arm_arch 8A  8_A;  then echo armv8-a
4481         fi
4482     }
4483
4484     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4485
4486     case $cpu in
4487         armv*)
4488             cpuflags="-march=$cpu"
4489             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4490         ;;
4491         *)
4492             cpuflags="-mcpu=$cpu"
4493             case $cpu in
4494                 cortex-a*)                               subarch=armv7a  ;;
4495                 cortex-r*)                               subarch=armv7r  ;;
4496                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4497                 arm11*)                                  subarch=armv6   ;;
4498                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4499                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4500                 *)                             subarch=$(probe_arm_arch) ;;
4501             esac
4502         ;;
4503     esac
4504
4505     case "$subarch" in
4506         armv5t*)    enable fast_clz                ;;
4507         armv[6-8]*)
4508             enable fast_clz
4509             disabled fast_unaligned || enable fast_unaligned
4510             ;;
4511     esac
4512
4513 elif enabled avr32; then
4514
4515     case $cpu in
4516         ap7[02]0[0-2])
4517             subarch="avr32_ap"
4518             cpuflags="-mpart=$cpu"
4519         ;;
4520         ap)
4521             subarch="avr32_ap"
4522             cpuflags="-march=$cpu"
4523         ;;
4524         uc3[ab]*)
4525             subarch="avr32_uc"
4526             cpuflags="-mcpu=$cpu"
4527         ;;
4528         uc)
4529             subarch="avr32_uc"
4530             cpuflags="-march=$cpu"
4531         ;;
4532     esac
4533
4534 elif enabled bfin; then
4535
4536     cpuflags="-mcpu=$cpu"
4537
4538 elif enabled mips; then
4539
4540     cpuflags="-march=$cpu"
4541
4542     if [ "$cpu" != "generic" ]; then
4543         disable mips32r2
4544         disable mips32r5
4545         disable mips64r2
4546         disable mips32r6
4547         disable mips64r6
4548         disable loongson2
4549         disable loongson3
4550
4551         case $cpu in
4552             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4553                 enable mips32r2
4554                 disable msa
4555             ;;
4556             p5600|i6400|p6600)
4557                 disable mipsdsp
4558                 disable mipsdspr2
4559             ;;
4560             loongson*)
4561                 enable loongson2
4562                 enable loongson3
4563                 enable local_aligned_8 local_aligned_16 local_aligned_32
4564                 enable simd_align_16
4565                 enable fast_64bit
4566                 enable fast_clz
4567                 enable fast_cmov
4568                 enable fast_unaligned
4569                 disable aligned_stack
4570                 disable mipsfpu
4571                 disable mipsdsp
4572                 disable mipsdspr2
4573                 case $cpu in
4574                     loongson3*)
4575                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4576                     ;;
4577                     loongson2e)
4578                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4579                     ;;
4580                     loongson2f)
4581                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4582                     ;;
4583                 esac
4584             ;;
4585             *)
4586                 # Unknown CPU. Disable everything.
4587                 warn "unknown CPU. Disabling all MIPS optimizations."
4588                 disable mipsfpu
4589                 disable mipsdsp
4590                 disable mipsdspr2
4591                 disable msa
4592                 disable mmi
4593             ;;
4594         esac
4595
4596         case $cpu in
4597             24kc)
4598                 disable mipsfpu
4599                 disable mipsdsp
4600                 disable mipsdspr2
4601             ;;
4602             24kf*)
4603                 disable mipsdsp
4604                 disable mipsdspr2
4605             ;;
4606             24kec|34kc|1004kc)
4607                 disable mipsfpu
4608                 disable mipsdspr2
4609             ;;
4610             24kef*|34kf*|1004kf*)
4611                 disable mipsdspr2
4612             ;;
4613             74kc)
4614                 disable mipsfpu
4615             ;;
4616             p5600)
4617                 enable mips32r5
4618                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4619             ;;
4620             i6400)
4621                 enable mips64r6
4622                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4623             ;;
4624             p6600)
4625                 enable mips64r6
4626                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4627             ;;
4628         esac
4629     else
4630         # We do not disable anything. Is up to the user to disable the unwanted features.
4631         warn 'generic cpu selected'
4632     fi
4633
4634 elif enabled ppc; then
4635
4636     disable ldbrx
4637
4638     case $(tolower $cpu) in
4639         601|ppc601|powerpc601)
4640             cpuflags="-mcpu=601"
4641             disable altivec
4642         ;;
4643         603*|ppc603*|powerpc603*)
4644             cpuflags="-mcpu=603"
4645             disable altivec
4646         ;;
4647         604*|ppc604*|powerpc604*)
4648             cpuflags="-mcpu=604"
4649             disable altivec
4650         ;;
4651         g3|75*|ppc75*|powerpc75*)
4652             cpuflags="-mcpu=750"
4653             disable altivec
4654         ;;
4655         g4|745*|ppc745*|powerpc745*)
4656             cpuflags="-mcpu=7450"
4657             disable vsx
4658         ;;
4659         74*|ppc74*|powerpc74*)
4660             cpuflags="-mcpu=7400"
4661             disable vsx
4662         ;;
4663         g5|970|ppc970|powerpc970)
4664             cpuflags="-mcpu=970"
4665             disable vsx
4666         ;;
4667         power[3-6]*)
4668             cpuflags="-mcpu=$cpu"
4669             disable vsx
4670         ;;
4671         power[7-8]*)
4672             cpuflags="-mcpu=$cpu"
4673         ;;
4674         cell)
4675             cpuflags="-mcpu=cell"
4676             enable ldbrx
4677             disable vsx
4678         ;;
4679         e500mc)
4680             cpuflags="-mcpu=e500mc"
4681             disable altivec
4682         ;;
4683         e500v2)
4684             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4685             disable altivec
4686             disable dcbzl
4687         ;;
4688         e500)
4689             cpuflags="-mcpu=8540 -mhard-float"
4690             disable altivec
4691             disable dcbzl
4692         ;;
4693     esac
4694
4695 elif enabled sparc; then
4696
4697     case $cpu in
4698         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4699             cpuflags="-mcpu=$cpu"
4700         ;;
4701         ultrasparc*|niagara[234])
4702             cpuflags="-mcpu=$cpu"
4703         ;;
4704     esac
4705
4706 elif enabled x86; then
4707
4708     case $cpu in
4709         i[345]86|pentium)
4710             cpuflags="-march=$cpu"
4711             disable i686
4712             disable mmx
4713         ;;
4714         # targets that do NOT support nopl and conditional mov (cmov)
4715         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4716             cpuflags="-march=$cpu"
4717             disable i686
4718         ;;
4719         # targets that do support nopl and conditional mov (cmov)
4720         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4721         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4722         |amdfam10|barcelona|b[dt]ver*|znver*)
4723             cpuflags="-march=$cpu"
4724             enable i686
4725             enable fast_cmov
4726         ;;
4727         # targets that do support conditional mov but on which it's slow
4728         pentium4|pentium4m|prescott|nocona)
4729             cpuflags="-march=$cpu"
4730             enable i686
4731             disable fast_cmov
4732         ;;
4733     esac
4734
4735 fi
4736
4737 if [ "$cpu" != generic ]; then
4738     add_cflags  $cpuflags
4739     add_asflags $cpuflags
4740     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4741 fi
4742
4743 # compiler sanity check
4744 check_exec <<EOF
4745 int main(void){ return 0; }
4746 EOF
4747 if test "$?" != 0; then
4748     echo "$cc is unable to create an executable file."
4749     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4750         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4751         echo "Only do this if you know what cross compiling means."
4752     fi
4753     die "C compiler test failed."
4754 fi
4755
4756 add_cppflags -D_ISOC99_SOURCE
4757 add_cxxflags -D__STDC_CONSTANT_MACROS
4758 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4759
4760 # some compilers silently accept -std=c11, so we also need to check that the
4761 # version macro is defined properly
4762 if test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L"; then
4763     add_cflags -std=c11
4764 else
4765     check_cflags -std=c99
4766 fi
4767
4768 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4769 #include <stdlib.h>
4770 EOF
4771 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4772 #include <stdlib.h>
4773 EOF
4774
4775 add_host_cppflags -D_ISOC99_SOURCE
4776 check_host_cflags -std=c99
4777 check_host_cflags -Wall
4778 check_host_cflags $host_cflags_speed
4779
4780 check_64bit(){
4781     arch32=$1
4782     arch64=$2
4783     expr=$3
4784     check_code cc "" "int test[2*($expr) - 1]" &&
4785         subarch=$arch64 || subarch=$arch32
4786 }
4787
4788 case "$arch" in
4789     aarch64|alpha|ia64)
4790         spic=$shared
4791     ;;
4792     mips)
4793         check_64bit mips mips64 '_MIPS_SIM > 1'
4794         spic=$shared
4795     ;;
4796     parisc)
4797         check_64bit parisc parisc64 'sizeof(void *) > 4'
4798         spic=$shared
4799     ;;
4800     ppc)
4801         check_64bit ppc ppc64 'sizeof(void *) > 4'
4802         spic=$shared
4803     ;;
4804     s390)
4805         check_64bit s390 s390x 'sizeof(void *) > 4'
4806         spic=$shared
4807     ;;
4808     sparc)
4809         check_64bit sparc sparc64 'sizeof(void *) > 4'
4810         spic=$shared
4811     ;;
4812     x86)
4813         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4814         # Treat x32 as x64 for now. Note it also needs spic=$shared
4815         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4816             subarch=x86_64
4817         if test "$subarch" = "x86_64"; then
4818             spic=$shared
4819         fi
4820     ;;
4821     ppc)
4822         check_cc <<EOF && subarch="ppc64"
4823         int test[(int)sizeof(char*) - 7];
4824 EOF
4825     ;;
4826 esac
4827
4828 enable $subarch
4829 enabled spic && enable_weak pic
4830
4831 enabled x86_64 && objformat=elf64 || objformat="elf32"
4832
4833 # OS specific
4834 case $target_os in
4835     aix)
4836         SHFLAGS=-shared
4837         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4838         enabled shared && add_ldflags -Wl,-brtl
4839         ;;
4840     android)
4841         disable symver
4842         enable section_data_rel_ro
4843         SLIB_INSTALL_NAME='$(SLIBNAME)'
4844         SLIB_INSTALL_LINKS=
4845         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4846         ;;
4847     haiku)
4848         prefix_default="/boot/common"
4849         network_extralibs="-lnetwork"
4850         host_extralibs=
4851         ;;
4852     sunos)
4853         SHFLAGS='-shared -Wl,-h,$$(@F)'
4854         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4855         network_extralibs="-lsocket -lnsl"
4856         add_cppflags -D__EXTENSIONS__
4857         # When using suncc to build, the Solaris linker will mark
4858         # an executable with each instruction set encountered by
4859         # the Solaris assembler.  As our libraries contain their own
4860         # guards for processor-specific code, instead suppress
4861         # generation of the HWCAPS ELF section on Solaris x86 only.
4862         enabled_all suncc x86 &&
4863             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4864             add_ldflags -Wl,-M,mapfile
4865         nm_default='nm -P -g'
4866         version_script='-M'
4867         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
4868         ;;
4869     netbsd)
4870         disable symver
4871         oss_indev_extralibs="-lossaudio"
4872         oss_outdev_extralibs="-lossaudio"
4873         enabled gcc || check_ldflags -Wl,-zmuldefs
4874         ;;
4875     openbsd|bitrig)
4876         disable symver
4877         SHFLAGS='-shared'
4878         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4879         SLIB_INSTALL_LINKS=
4880         oss_indev_extralibs="-lossaudio"
4881         oss_outdev_extralibs="-lossaudio"
4882         ;;
4883     dragonfly)
4884         disable symver
4885         ;;
4886     freebsd)
4887         ;;
4888     bsd/os)
4889         add_extralibs -lpoll -lgnugetopt
4890         strip="strip -d"
4891         ;;
4892     darwin)
4893         enabled ppc && add_asflags -force_cpusubtype_ALL
4894         install_name_dir_default='$(SHLIBDIR)'
4895         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4896         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4897         strip="${strip} -x"
4898         add_ldflags -Wl,-dynamic,-search_paths_first
4899         SLIBSUF=".dylib"
4900         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4901         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4902         objformat="macho"
4903         enabled x86_64 && objformat="macho64" || objformat="macho32"
4904         enabled_any pic shared x86_64 ||
4905             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4906         check_header dispatch/dispatch.h &&
4907             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
4908         version_script='-exported_symbols_list'
4909         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
4910         ;;
4911     msys*)
4912         die "Native MSYS builds are discouraged, please use the MINGW environment."
4913         ;;
4914     mingw32*|mingw64*)
4915         if test $target_os = "mingw32ce"; then
4916             disable network
4917         else
4918             target_os=mingw32
4919         fi
4920         LIBTARGET=i386
4921         if enabled x86_64; then
4922             LIBTARGET="i386:x86-64"
4923         elif enabled arm; then
4924             LIBTARGET=arm-wince
4925         fi
4926         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4927         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4928         shlibdir_default="$bindir_default"
4929         SLIBPREF=""
4930         SLIBSUF=".dll"
4931         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4932         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4933         dlltool="${cross_prefix}dlltool"
4934         if check_cmd lib.exe -list; then
4935             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4936             if enabled x86_64; then
4937                 LIBTARGET=x64
4938             fi
4939         elif check_cmd $dlltool --version; then
4940             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4941         fi
4942         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4943         SLIB_INSTALL_LINKS=
4944         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4945         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4946         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--disable-auto-image-base'
4947         enabled x86_64 && objformat="win64" || objformat="win32"
4948         ranlib=:
4949         enable dos_paths
4950         check_ldflags -Wl,--nxcompat,--dynamicbase
4951         # Lets work around some stupidity in binutils.
4952         # ld will strip relocations from executables even though we need them
4953         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4954         # however ld then forgets what the entry point should be (oops) so we
4955         # have to manually (re)set it.
4956         if enabled x86_32; then
4957             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
4958         elif enabled x86_64; then
4959             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
4960             check_ldflags -Wl,--high-entropy-va # binutils 2.25
4961             # Set image base >4GB for extra entropy with HEASLR
4962             add_ldexeflags -Wl,--image-base,0x140000000
4963             append SHFLAGS -Wl,--image-base,0x180000000
4964         fi
4965         ;;
4966     win32|win64)
4967         disable symver
4968         if enabled shared; then
4969             # Link to the import library instead of the normal static library
4970             # for shared libs.
4971             LD_LIB='%.lib'
4972             # Cannot build both shared and static libs with MSVC or icl.
4973             disable static
4974         fi
4975         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4976         shlibdir_default="$bindir_default"
4977         SLIBPREF=""
4978         SLIBSUF=".dll"
4979         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4980         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4981         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4982         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4983         SLIB_INSTALL_LINKS=
4984         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4985         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4986         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4987         enabled x86_64 && objformat="win64" || objformat="win32"
4988         ranlib=:
4989         enable dos_paths
4990         ;;
4991     cygwin*)
4992         target_os=cygwin
4993         shlibdir_default="$bindir_default"
4994         SLIBPREF="cyg"
4995         SLIBSUF=".dll"
4996         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4997         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4998         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4999         SLIB_INSTALL_LINKS=
5000         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
5001         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
5002         enabled x86_64 && objformat="win64" || objformat="win32"
5003         enable dos_paths
5004         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
5005         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5006         ;;
5007     *-dos|freedos|opendos)
5008         network_extralibs="-lsocket"
5009         objformat="coff"
5010         enable dos_paths
5011         add_cppflags -U__STRICT_ANSI__
5012         ;;
5013     linux)
5014         enable dv1394
5015         enable section_data_rel_ro
5016         ;;
5017     irix*)
5018         target_os=irix
5019         ranlib="echo ignoring ranlib"
5020         ;;
5021     os/2*)
5022         strip="lxlite -CS"
5023         objformat="aout"
5024         add_cppflags -D_GNU_SOURCE
5025         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
5026         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
5027         LIBSUF="_s.a"
5028         SLIBPREF=""
5029         SLIBSUF=".dll"
5030         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
5031         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5032         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5033             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5034             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5035             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5036             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5037         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5038             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5039         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5040         SLIB_INSTALL_LINKS=
5041         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5042         enable dos_paths
5043         enable_weak os2threads
5044         ;;
5045     gnu/kfreebsd)
5046         add_cppflags -D_BSD_SOURCE
5047         ;;
5048     gnu)
5049         ;;
5050     qnx)
5051         add_cppflags -D_QNX_SOURCE
5052         network_extralibs="-lsocket"
5053         ;;
5054     symbian)
5055         SLIBSUF=".dll"
5056         enable dos_paths
5057         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5058         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5059         add_ldflags -Wl,--target1-abs,--no-undefined \
5060                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5061                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5062         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5063                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5064                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5065         ;;
5066     osf1)
5067         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
5068         ;;
5069     minix)
5070         ;;
5071     none)
5072         ;;
5073     *)
5074         die "Unknown OS '$target_os'."
5075         ;;
5076 esac
5077
5078 # test if creating links works
5079 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5080 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5081 mkdir "$link_dest"
5082 $ln_s "$link_dest" "$link_name"
5083 touch "$link_dest/test_file"
5084 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5085     # create link to source path
5086     [ -e src ] && rm src
5087     $ln_s "$source_path" src
5088     source_link=src
5089 else
5090     # creating directory links doesn't work
5091     # fall back to using the full source path
5092     source_link="$source_path"
5093 fi
5094 # cleanup
5095 rm -r "$link_dest"
5096 rm -r "$link_name"
5097
5098 # determine libc flavour
5099
5100 probe_libc(){
5101     pfx=$1
5102     pfx_no_=${pfx%_}
5103     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5104     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5105         eval ${pfx}libc_type=uclibc
5106         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5107     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5108         eval ${pfx}libc_type=glibc
5109         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5110     # MinGW headers can be installed on Cygwin, so check for newlib first.
5111     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5112         eval ${pfx}libc_type=newlib
5113         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5114     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5115     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5116         eval ${pfx}libc_type=mingw64
5117         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5118             add_compat msvcrt/snprintf.o
5119             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5120         fi
5121         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5122         eval test \$${pfx_no_}cc_type = "gcc" &&
5123             add_${pfx}cppflags -D__printf__=__gnu_printf__
5124     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5125          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5126         eval ${pfx}libc_type=mingw32
5127         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5128             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5129             die "ERROR: MinGW32 runtime version must be >= 3.15."
5130         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5131         check_${pfx}cpp_condition _mingw.h "defined(_WIN32_WINNT) && _WIN32_WINNT >= 0x0502" ||
5132             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
5133         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5134             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5135         eval test \$${pfx_no_}cc_type = "gcc" &&
5136             add_${pfx}cppflags -D__printf__=__gnu_printf__
5137     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5138         eval ${pfx}libc_type=msvcrt
5139         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5140             if [ "$pfx" = host_ ]; then
5141                 add_host_cppflags -Dsnprintf=_snprintf
5142             else
5143                 add_compat strtod.o strtod=avpriv_strtod
5144                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5145                                              _snprintf=avpriv_snprintf  \
5146                                              vsnprintf=avpriv_vsnprintf
5147             fi
5148         fi
5149         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5150         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5151         # 0x601 by default unless something else is set by the user.
5152         # This can easily lead to us detecting functions only present
5153         # in such new versions and producing binaries requiring windows 7.0.
5154         # Therefore explicitly set the default to XP unless the user has
5155         # set something else on the command line.
5156         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5157         # family. For these cases, configure is free to use any functions
5158         # found in the SDK headers by default. (Alternatively, we could force
5159         # _WIN32_WINNT to 0x0602 in that case.)
5160         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5161             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
5162 #ifdef WINAPI_FAMILY
5163 #include <winapifamily.h>
5164 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5165 #error not desktop
5166 #endif
5167 #endif
5168 EOF
5169         if [ "$pfx" = "" ]; then
5170             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5171             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5172         fi
5173     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5174         eval ${pfx}libc_type=klibc
5175     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5176         eval ${pfx}libc_type=bionic
5177     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5178         eval ${pfx}libc_type=solaris
5179         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5180     fi
5181     check_${pfx}cc <<EOF
5182 #include <time.h>
5183 void *v = localtime_r;
5184 EOF
5185 test "$?" != 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
5186 #include <time.h>
5187 void *v = localtime_r;
5188 EOF
5189
5190 }
5191
5192 probe_libc
5193 test -n "$libc_type" && enable libc_$libc_type
5194 probe_libc host_
5195 test -n "$host_libc_type" && enable host_libc_$host_libc_type
5196
5197 case $libc_type in
5198     bionic)
5199         add_compat strtod.o strtod=avpriv_strtod
5200         ;;
5201 esac
5202
5203 # hacks for compiler/libc/os combinations
5204
5205 if enabled_all tms470 libc_glibc; then
5206     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
5207     add_cppflags -D__USER_LABEL_PREFIX__=
5208     add_cppflags -D__builtin_memset=memset
5209     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
5210     add_cflags   -pds=48    # incompatible redefinition of macro
5211 fi
5212
5213 if enabled_all ccc libc_glibc; then
5214     add_ldflags -Wl,-z,now  # calls to libots crash without this
5215 fi
5216
5217 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5218     add_cppflags '-I\$(SRC_PATH)/compat/float'
5219
5220 esc(){
5221     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
5222 }
5223
5224 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
5225
5226 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5227
5228 set_default libdir
5229 : ${shlibdir_default:="$libdir"}
5230 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5231
5232 set_default $PATHS_LIST
5233 set_default nm
5234
5235 # we need to build at least one lib type
5236 if ! enabled_any static shared; then
5237     cat <<EOF
5238 At least one library type must be built.
5239 Specify --enable-static to build the static libraries or --enable-shared to
5240 build the shared libraries as well. To only build the shared libraries specify
5241 --disable-static in addition to --enable-shared.
5242 EOF
5243     exit 1
5244 fi
5245
5246 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5247
5248 enable_weak_pic() {
5249     disabled pic && return
5250     enable pic
5251     add_cppflags -DPIC
5252     case "$target_os" in
5253     mingw*|cygwin*)
5254         ;;
5255     *)
5256         add_cflags -fPIC
5257         ;;
5258     esac
5259     add_asflags  -fPIC
5260 }
5261
5262 enabled pic && enable_weak_pic
5263
5264 check_cc <<EOF || die "Symbol mangling check failed."
5265 int ff_extern;
5266 EOF
5267 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5268 extern_prefix=${sym%%ff_extern*}
5269
5270 check_cc <<EOF && enable_weak inline_asm
5271 void foo(void) { __asm__ volatile ("" ::); }
5272 EOF
5273
5274 _restrict=
5275 for restrict_keyword in restrict __restrict__ __restrict; do
5276     check_cc <<EOF && _restrict=$restrict_keyword && break
5277 void foo(char * $restrict_keyword p);
5278 EOF
5279 done
5280
5281 check_cc <<EOF && enable pragma_deprecated
5282 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
5283 EOF
5284
5285 check_cc <<EOF && enable attribute_packed
5286 struct { int x; } __attribute__((packed)) x;
5287 EOF
5288
5289 check_cc <<EOF && enable attribute_may_alias
5290 union { int x; } __attribute__((may_alias)) x;
5291 EOF
5292
5293 check_cc <<EOF || die "endian test failed"
5294 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5295 EOF
5296 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5297
5298 if ! enabled ppc64 || enabled bigendian; then
5299     disable vsx
5300 fi
5301
5302 check_gas() {
5303     log "check_gas using '$as' as AS"
5304     # :vararg is used on aarch64, arm and ppc altivec
5305     check_as <<EOF || return 1
5306 .macro m n, y:vararg=0
5307 \n: .int \y
5308 .endm
5309 m x
5310 EOF
5311     # .altmacro is only used in arm asm
5312     ! enabled arm || check_as <<EOF || return 1
5313 .altmacro
5314 EOF
5315     enable gnu_as
5316     return 0
5317 }
5318
5319 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5320     nogas=:
5321     enabled_any arm aarch64 && nogas=die
5322     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5323     as_noop=-v
5324
5325     case $as_type in
5326         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5327         gcc)  gaspp_as_type=gas ;;
5328         *)    gaspp_as_type=$as_type ;;
5329     esac
5330
5331     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5332
5333     test "${as#*gas-preprocessor.pl}" != "$as" ||
5334     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5335         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5336
5337     if ! check_gas ; then
5338         as=${gas:=$as}
5339         check_gas || \
5340             $nogas "GNU assembler not found, install/update gas-preprocessor"
5341     fi
5342
5343     check_as <<EOF && enable as_func
5344 .func test
5345 .endfunc
5346 EOF
5347 fi
5348
5349 check_inline_asm inline_asm_labels '"1:\n"'
5350
5351 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5352
5353 if enabled aarch64; then
5354     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5355     # internal assembler in clang 3.3 does not support this instruction
5356     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5357     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5358
5359     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5360
5361 elif enabled alpha; then
5362
5363     check_cflags -mieee
5364
5365 elif enabled arm; then
5366
5367     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
5368
5369     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
5370 float func(float a, float b){ return a+b; }
5371 EOF
5372
5373     enabled thumb && check_cflags -mthumb || check_cflags -marm
5374
5375     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
5376         enable vfp_args
5377     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5378         enable vfp_args
5379     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5380         case "${cross_prefix:-$cc}" in
5381             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
5382             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
5383 __asm__ (".eabi_attribute 28, 1");
5384 int main(void) { return 0; }
5385 EOF
5386         esac
5387         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5388     fi
5389
5390     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5391     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5392     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5393     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5394     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5395     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5396     enabled setend  && check_insn setend  'setend be'
5397
5398     [ $target_os = linux ] || [ $target_os = android ] ||
5399         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5400             $ARCH_EXT_LIST_ARM
5401
5402     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5403
5404     check_as <<EOF && enable as_dn_directive
5405 ra .dn d0.i16
5406 .unreq ra
5407 EOF
5408     check_as <<EOF && enable as_fpu_directive
5409 .fpu neon
5410 EOF
5411
5412     # llvm's integrated assembler supports .object_arch from llvm 3.5
5413     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5414         check_as <<EOF && enable as_object_arch
5415 .object_arch armv4
5416 EOF
5417
5418     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5419
5420 elif enabled mips; then
5421
5422     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5423     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5424     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5425
5426     # Enable minimum ISA based on selected options
5427     if enabled mips64; then
5428         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5429         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5430         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5431     else
5432         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5433         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5434         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5435         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5436     fi
5437
5438     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5439     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5440     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
5441     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5442     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5443
5444     if enabled bigendian && enabled msa; then
5445         disable msa
5446     fi
5447
5448 elif enabled parisc; then
5449
5450     if enabled gcc; then
5451         case $($cc -dumpversion) in
5452             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5453         esac
5454     fi
5455
5456 elif enabled ppc; then
5457
5458     enable local_aligned_8 local_aligned_16 local_aligned_32
5459
5460     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5461     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5462     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5463     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5464
5465     # AltiVec flags: The FSF version of GCC differs from the Apple version
5466     if enabled altivec; then
5467         check_cflags -maltivec -mabi=altivec &&
5468         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
5469         check_cflags -faltivec
5470
5471         # check if our compiler supports Motorola AltiVec C API
5472         check_cc <<EOF || disable altivec
5473 $inc_altivec_h
5474 int main(void) {
5475     vector signed int v1 = (vector signed int) { 0 };
5476     vector signed int v2 = (vector signed int) { 1 };
5477     v1 = vec_add(v1, v2);
5478     return 0;
5479 }
5480 EOF
5481
5482         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5483     fi
5484
5485     if enabled vsx; then
5486         check_cflags -mvsx &&
5487         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
5488     fi
5489
5490     if enabled power8; then
5491         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
5492     fi
5493
5494 elif enabled x86; then
5495
5496     check_builtin rdtsc    intrin.h   "__rdtsc()"
5497     check_builtin mm_empty mmintrin.h "_mm_empty()"
5498
5499     enable local_aligned_8 local_aligned_16 local_aligned_32
5500
5501     # check whether EBP is available on x86
5502     # As 'i' is stored on the stack, this program will crash
5503     # if the base pointer is used to access it because the
5504     # base pointer is cleared in the inline assembly code.
5505     check_exec_crash <<EOF && enable ebp_available
5506 volatile int i=0;
5507 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5508 return i;
5509 EOF
5510
5511     # check whether EBX is available on x86
5512     check_inline_asm ebx_available '""::"b"(0)' &&
5513         check_inline_asm ebx_available '"":::"%ebx"'
5514
5515     # check whether xmm clobbers are supported
5516     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5517
5518     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5519         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5520
5521     # check whether binutils is new enough to compile SSSE3/MMXEXT
5522     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5523     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5524
5525     probe_x86asm(){
5526         x86asmexe_probe=$1
5527         if check_cmd $x86asmexe_probe -v; then
5528             x86asmexe=$x86asmexe_probe
5529             x86asm_type=nasm
5530             x86asm_debug="-g -F dwarf"
5531         elif check_cmd $x86asmexe_probe --version; then
5532             x86asmexe=$x86asmexe_probe
5533             x86asm_type=yasm
5534             x86asm_debug="-g dwarf2"
5535         fi
5536         check_x86asm "movbe ecx, [5]" && enable x86asm
5537     }
5538
5539     if ! disabled_any asm mmx x86asm; then
5540         disable x86asm
5541         for program in $x86asmexe nasm yasm; do
5542             probe_x86asm $program && break
5543         done
5544         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
5545         test $x86asm_type = 'nasm' && X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
5546         test $x86asm_type = 'yasm' && X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
5547         X86ASMFLAGS="-f $objformat"
5548         enabled pic               && append X86ASMFLAGS "-DPIC"
5549         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
5550         case "$objformat" in
5551             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
5552         esac
5553
5554         check_x86asm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
5555         check_x86asm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
5556         check_x86asm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
5557         check_x86asm "CPU amdnop" || disable cpunop
5558     fi
5559
5560     case "$cpu" in
5561         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5562             disable fast_clz
5563         ;;
5564     esac
5565
5566 fi
5567
5568 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
5569
5570 check_ldflags -Wl,--as-needed
5571 check_ldflags -Wl,-z,noexecstack
5572
5573 if check_func dlopen && check_func dlsym; then
5574     ldl=
5575 elif check_func dlopen -ldl && check_func dlsym -ldl; then
5576     ldl=-ldl
5577 fi
5578
5579 avisynth_demuxer_extralibs='$ldl'
5580 cuda_extralibs='$ldl'
5581 decklink_outdev_extralibs="$decklink_outdev_extralibs $ldl"
5582 decklink_indev_extralibs="$decklink_indev_extralibs $ldl"
5583 libndi_newtek_outdev_extralibs="$libndi_newtek_outdev_extralibs $ldl"
5584 libndi_newtek_indev_extralibs="$libndi_newtek_indev_extralibs $ldl"
5585 frei0r_filter_extralibs='$ldl'
5586 frei0r_src_filter_extralibs='$ldl'
5587 ladspa_filter_extralibs='$ldl'
5588 nvenc_extralibs='$ldl'
5589 coreimage_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5590 coreimagesrc_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5591
5592 if ! disabled network; then
5593     check_func getaddrinfo $network_extralibs
5594     check_func inet_aton $network_extralibs
5595
5596     check_type netdb.h "struct addrinfo"
5597     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5598     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5599     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5600     check_type poll.h "struct pollfd"
5601     check_type netinet/sctp.h "struct sctp_event_subscribe"
5602     check_struct "sys/socket.h" "struct msghdr" msg_flags
5603     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5604     check_type netinet/in.h "struct sockaddr_in6"
5605     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5606     check_type "sys/types.h sys/socket.h" socklen_t
5607
5608     # Prefer arpa/inet.h over winsock2
5609     if check_header arpa/inet.h ; then
5610         check_func closesocket
5611     elif check_header winsock2.h ; then
5612         check_func_headers winsock2.h closesocket -lws2 &&
5613             network_extralibs="-lws2" ||
5614         { check_func_headers winsock2.h closesocket -lws2_32 &&
5615             network_extralibs="-lws2_32"; } || disable winsock2_h network
5616         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5617
5618         check_type ws2tcpip.h socklen_t
5619         check_type ws2tcpip.h "struct addrinfo"
5620         check_type ws2tcpip.h "struct group_source_req"
5621         check_type ws2tcpip.h "struct ip_mreq_source"
5622         check_type ws2tcpip.h "struct ipv6_mreq"
5623         check_type winsock2.h "struct pollfd"
5624         check_struct winsock2.h "struct sockaddr" sa_len
5625         check_type ws2tcpip.h "struct sockaddr_in6"
5626         check_type ws2tcpip.h "struct sockaddr_storage"
5627     else
5628         disable network
5629     fi
5630 fi
5631
5632 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5633 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5634 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5635 check_builtin sarestart signal.h "SA_RESTART"
5636 check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" -lpthread
5637 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5638 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5639 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5640 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5641
5642 case "$custom_allocator" in
5643     jemalloc)
5644         # jemalloc by default does not use a prefix
5645         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5646     ;;
5647     tcmalloc)
5648         require_pkg_config libtcmalloc gperftools/tcmalloc.h tc_malloc
5649         malloc_prefix=tc_
5650     ;;
5651 esac
5652
5653 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5654 check_func  ${malloc_prefix}memalign            && enable memalign
5655 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5656
5657 check_func  access
5658 check_func_headers stdlib.h arc4random
5659 check_func_headers time.h clock_gettime ||
5660     { check_lib clock_gettime time.h clock_gettime -lrt && LIBRT="-lrt"; }
5661 check_func  fcntl
5662 check_func  fork
5663 check_func  gethrtime
5664 check_func  getopt
5665 check_func  getrusage
5666 check_func  gettimeofday
5667 check_func  isatty
5668 check_func  mach_absolute_time
5669 check_func  mkstemp
5670 check_func  mmap
5671 check_func  mprotect
5672 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5673 check_func_headers time.h nanosleep ||
5674     { check_lib nanosleep time.h nanosleep -lrt && LIBRT="-lrt"; }
5675 check_func  sched_getaffinity
5676 check_func  setrlimit
5677 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5678 check_func  strerror_r
5679 check_func  sysconf
5680 check_func  sysctl
5681 check_func  usleep
5682
5683 check_func_headers conio.h kbhit
5684 check_func_headers io.h setmode
5685 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5686 check_func_headers stdlib.h getenv
5687 check_func_headers sys/stat.h lstat
5688
5689 check_func_headers windows.h GetProcessAffinityMask
5690 check_func_headers windows.h GetProcessTimes
5691 check_func_headers windows.h GetSystemTimeAsFileTime
5692 check_func_headers windows.h LoadLibrary
5693 check_func_headers windows.h MapViewOfFile
5694 check_func_headers windows.h PeekNamedPipe
5695 check_func_headers windows.h SetConsoleTextAttribute
5696 check_func_headers windows.h SetConsoleCtrlHandler
5697 check_func_headers windows.h Sleep
5698 check_func_headers windows.h VirtualAlloc
5699 check_struct windows.h "CONDITION_VARIABLE" Ptr
5700 check_func_headers glob.h glob
5701 enabled xlib &&
5702     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5703
5704 check_header AudioToolbox/AudioToolbox.h
5705 check_header d3d11.h
5706 check_header direct.h
5707 check_header dirent.h
5708 check_header dlfcn.h
5709 check_header dxgidebug.h
5710 check_header dxva.h
5711 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5712 check_header io.h
5713 check_header libcrystalhd/libcrystalhd_if.h
5714 check_header mach/mach_time.h
5715 check_header malloc.h
5716 check_header net/udplite.h
5717 check_header poll.h
5718 check_header sys/mman.h
5719 check_header sys/param.h
5720 check_header sys/resource.h
5721 check_header sys/select.h
5722 check_header sys/time.h
5723 check_header sys/un.h
5724 check_header termios.h
5725 check_header unistd.h
5726 check_header valgrind/valgrind.h
5727 check_header VideoDecodeAcceleration/VDADecoder.h
5728 check_header VideoToolbox/VideoToolbox.h
5729 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5730 enabled videotoolbox && check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferColorPrimaries_ITU_R_2020 -framework CoreVideo
5731 check_header windows.h
5732 check_header X11/extensions/XvMClib.h
5733 check_header asm/types.h
5734
5735 # it seems there are versions of clang in some distros that try to use the
5736 # gcc headers, which explodes for stdatomic
5737 # so we also check that atomics actually work here
5738 check_builtin stdatomic_h stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0)"
5739
5740 check_lib ole32    "windows.h"            CoTaskMemFree        -lole32
5741 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
5742 check_lib wincrypt "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
5743 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
5744
5745 check_lib coreservices "CoreServices/CoreServices.h" UTGetOSTypeFromString "-framework CoreServices"
5746
5747 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5748
5749 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5750 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5751 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5752 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5753 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5754
5755 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
5756 check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
5757 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
5758 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
5759 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5760 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5761 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
5762 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
5763 check_type "va/va.h va/va_enc_vp9.h"  "VAEncPictureParameterBufferVP9"
5764
5765 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5766
5767 check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt
5768
5769 if ! disabled w32threads && ! enabled pthreads; then
5770     check_func_headers "windows.h process.h" _beginthreadex &&
5771         enable w32threads || disable w32threads
5772     if ! enabled w32threads && enabled winrt; then
5773         check_func_headers "windows.h" CreateThread &&
5774             enable w32threads || disable w32threads
5775     fi
5776 fi
5777
5778 # check for some common methods of building with pthread support
5779 # do this before the optional library checks as some of them require pthreads
5780 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5781     if check_lib pthreads pthread.h pthread_join   -pthread &&
5782        check_lib pthreads pthread.h pthread_create -pthread; then
5783         add_cflags -pthread
5784     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
5785          check_lib pthreads pthread.h pthread_create -pthreads; then
5786         add_cflags -pthreads
5787     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
5788          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
5789         add_cflags -ldl -pthread
5790     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
5791          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
5792         :
5793     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
5794          check_lib pthreads pthread.h pthread_create -lpthread; then
5795         :
5796     elif check_func pthread_join && check_func pthread_create; then
5797         enable pthreads
5798     fi
5799     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5800 fi
5801
5802
5803 if enabled pthreads; then
5804   check_func pthread_cancel
5805 fi
5806
5807 enabled pthreads &&
5808     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)"
5809
5810 enabled  zlib && check_lib zlib   zlib.h      zlibVersion    -lz
5811 enabled bzlib && check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
5812 enabled  lzma && check_lib lzma   lzma.h lzma_version_number -llzma
5813
5814 check_lib libm math.h sin -lm && LIBM="-lm"
5815
5816 atan2f_args=2
5817 copysign_args=2
5818 hypot_args=2
5819 ldexpf_args=2
5820 powf_args=2
5821
5822 for func in $MATH_FUNCS; do
5823     eval check_mathfunc $func \${${func}_args:-1} $LIBM
5824 done
5825
5826 for func in $COMPLEX_FUNCS; do
5827     eval check_complexfunc $func \${${func}_args:-1}
5828 done
5829
5830 # these are off by default, so fail if requested and not available
5831 enabled avfoundation_indev && { check_header_objcc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
5832 enabled avfoundation_indev && { check_lib avfoundation_indev CoreGraphics/CoreGraphics.h CGGetActiveDisplayList -framework CoreGraphics ||
5833                                 check_lib avfoundation_indev ApplicationServices/ApplicationServices.h CGGetActiveDisplayList -framework ApplicationServices; }
5834 enabled cuda_sdk          && require cuda_sdk cuda.h cuCtxCreate -lcuda
5835 enabled cuvid             && { enabled cuda ||
5836                                die "ERROR: CUVID requires CUDA"; }
5837 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5838 enabled coreimage_filter  && { check_header_objcc QuartzCore/CoreImage.h || disable coreimage_filter; }
5839 enabled coreimagesrc_filter && { check_header_objcc QuartzCore/CoreImage.h || disable coreimagesrc_filter; }
5840 enabled decklink          && { { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; } &&
5841                                { check_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a060100" || die "ERROR: Decklink API version must be >= 10.6.1."; } }
5842 enabled libndi_newtek     && { check_header Processing.NDI.Lib.h || die "ERROR: Processing.NDI.Lib.h header not found"; }
5843 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
5844 enabled gmp               && require gmp gmp.h mpz_export -lgmp
5845 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
5846 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads || die "ERROR: jni not found"; }
5847 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
5848 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5849 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
5850 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
5851 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
5852 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5853                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
5854                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5855 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
5856 enabled libdc1394         && require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new
5857 enabled libfdk_aac        && { use_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5858                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5859                                  warn "using libfdk without pkg-config"; } }
5860 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"
5861 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
5862 enabled fontconfig        && enable libfontconfig
5863 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
5864 enabled libfreetype       && require_pkg_config freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
5865 enabled libfribidi        && require_pkg_config fribidi fribidi.h fribidi_version_info
5866 enabled libgme            && { use_pkg_config libgme gme/gme.h gme_new_emu ||
5867                                require libgme gme/gme.h gme_new_emu -lgme -lstdc++; }
5868 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5869                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
5870                                done || die "ERROR: libgsm not found"; }
5871 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
5872 enabled libkvazaar        && require_pkg_config "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
5873 # While it may appear that require is being used as a pkg-config
5874 # fallback for libmfx, it is actually being used to detect a different
5875 # installation route altogether.  If libmfx is installed via the Intel
5876 # Media SDK or Intel Media Server Studio, these don't come with
5877 # pkg-config support.  Instead, users should make sure that the build
5878 # can find the libraries and headers through other means.
5879 enabled libmfx            && { use_pkg_config libmfx "mfx/mfxvideo.h" MFXInit ||
5880                                { require libmfx "mfx/mfxvideo.h" MFXInit -llibmfx && warn "using libmfx without pkg-config"; } }
5881 enabled libmodplug        && require_pkg_config libmodplug libmodplug/modplug.h ModPlug_Load
5882 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5883 enabled libmysofa         && require libmysofa "mysofa.h" mysofa_load -lmysofa
5884 enabled libnpp            && { check_lib libnpp npp.h nppGetLibVersion -lnppig -lnppicc -lnppc ||
5885                                check_lib libnpp npp.h nppGetLibVersion -lnppi -lnppc ||
5886                                die "ERROR: libnpp not found"; }
5887 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5888 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5889 enabled libopencv         && { check_header opencv2/core/core_c.h &&
5890                                { use_pkg_config opencv opencv2/core/core_c.h cvCreateImageHeader ||
5891                                  require opencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
5892                                require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader; }
5893 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
5894 enabled libopenjpeg       && { { check_lib libopenjpeg openjpeg-2.2/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5895                                check_lib libopenjpeg openjpeg-2.2/openjpeg.h opj_version -lopenjp2 ||
5896                                { check_lib libopenjpeg openjpeg-2.1/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5897                                check_lib libopenjpeg openjpeg-2.1/openjpeg.h opj_version -lopenjp2 ||
5898                                { check_lib libopenjpeg openjpeg-2.0/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5899                                { check_lib libopenjpeg openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5900                                { check_lib libopenjpeg openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5901                                die "ERROR: libopenjpeg not found"; }
5902 enabled libopenmpt        && require_pkg_config "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create
5903 enabled libopus           && {
5904     enabled libopus_decoder && {
5905         require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
5906     }
5907     enabled libopus_encoder && {
5908         require_pkg_config opus opus_multistream.h opus_multistream_surround_encoder_create
5909     }
5910 }
5911 enabled libpulse          && require_pkg_config libpulse pulse/pulseaudio.h pa_context_new
5912 enabled librsvg           && require_pkg_config librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
5913 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
5914 enabled librubberband     && require_pkg_config "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new
5915 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
5916 enabled libsmbclient      && { use_pkg_config smbclient libsmbclient.h smbc_init ||
5917                                require smbclient libsmbclient.h smbc_init -lsmbclient; }
5918 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy
5919 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr && LIBSOXR="-lsoxr"
5920 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
5921 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
5922 enabled libtesseract      && require_pkg_config tesseract tesseract/capi.h TessBaseAPICreate
5923 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
5924 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
5925                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
5926                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
5927 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
5928 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
5929 enabled libvmaf           && require_pkg_config libvmaf libvmaf.h compute_vmaf
5930 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
5931 enabled libvorbis         && require_pkg_config vorbis vorbis/codec.h vorbis_info_init &&
5932                              require_pkg_config vorbisenc vorbis/vorbisenc.h vorbis_encode_init
5933
5934 enabled libvpx            && {
5935     enabled libvpx_vp8_decoder && {
5936         use_pkg_config "vpx >= 0.9.1" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
5937             check_lib libvpx_vp8_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
5938                 die "ERROR: libvpx decoder version must be >=0.9.1";
5939     }
5940     enabled libvpx_vp8_encoder && {
5941         use_pkg_config "vpx >= 0.9.7" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
5942             check_lib libvpx_vp8_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
5943                 die "ERROR: libvpx encoder version must be >=0.9.7";
5944     }
5945     enabled libvpx_vp9_decoder && {
5946         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
5947             check_lib libvpx_vp9_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx
5948     }
5949     enabled libvpx_vp9_encoder && {
5950         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
5951             check_lib libvpx_vp9_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx
5952     }
5953     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
5954         die "libvpx enabled but no supported decoders found"
5955     fi
5956 }
5957
5958 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
5959 enabled libwebp           && {
5960     enabled libwebp_encoder      && require_pkg_config "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
5961     enabled libwebp_anim_encoder && { use_pkg_config "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit || disable libwebp_anim_encoder; } }
5962 enabled libx264           && { use_pkg_config x264 "stdint.h x264.h" x264_encoder_encode ||
5963                                { require libx264 "stdint.h x264.h" x264_encoder_encode -lx264 &&
5964                                  warn "using libx264 without pkg-config"; } } &&
5965                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
5966                                die "ERROR: libx264 must be installed and version must be >= 0.118."; } &&
5967                              { check_cpp_condition x264.h "X264_MPEG2" &&
5968                                enable libx262; }
5969 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
5970                              { check_cpp_condition x265.h "X265_BUILD >= 68" ||
5971                                die "ERROR: libx265 version must be >= 68."; }
5972 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode -lxavs
5973 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
5974 enabled libzimg           && require_pkg_config "zimg >= 2.3.0" zimg.h zimg_get_api_version
5975 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
5976 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi &&
5977                              { check_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
5978                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
5979 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
5980 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
5981                                { ! enabled cross_compile &&
5982                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
5983                                  add_ldflags -L/opt/vc/lib/ &&
5984                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
5985                                die "ERROR: mmal not found" &&
5986                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
5987 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
5988                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
5989                                die "ERROR: openal not found"; } &&
5990                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
5991                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
5992 enabled opencl            && { check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
5993                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
5994                                die "ERROR: opencl not found"; } &&
5995                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
5996                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
5997                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
5998 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
5999                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
6000                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
6001                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
6002                                die "ERROR: opengl not found."
6003                              }
6004 enabled omx_rpi           && { check_header OMX_Core.h ||
6005                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_header OMX_Core.h ; } ||
6006                                die "ERROR: OpenMAX IL headers not found"; }
6007 enabled omx               && { check_header OMX_Core.h || die "ERROR: OpenMAX IL headers not found"; }
6008 enabled openssl           && { use_pkg_config openssl openssl/ssl.h OPENSSL_init_ssl ||
6009                                use_pkg_config openssl openssl/ssl.h SSL_library_init ||
6010                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
6011                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
6012                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
6013                                die "ERROR: openssl not found"; }
6014 enabled qtkit_indev      && { check_header_objcc QTKit/QTKit.h || disable qtkit_indev; }
6015
6016 if enabled gcrypt; then
6017     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
6018     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
6019         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
6020         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
6021         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
6022             die "ERROR: gcrypt not found"
6023         add_cflags $gcrypt_cflags && add_extralibs $gcrypt_extralibs
6024     else
6025         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
6026     fi
6027 fi
6028
6029 if enabled sdl2; then
6030     SDL2_CONFIG="${cross_prefix}sdl2-config"
6031     if check_pkg_config sdl2 SDL_events.h SDL_PollEvent; then
6032         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6033         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6034         check_func SDL_Init $sdl2_extralibs $sdl2_cflags ||
6035             disable sdl2
6036     elif "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
6037         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
6038         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
6039         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
6040         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
6041         check_func SDL_Init $sdl2_extralibs $sdl2_cflags ||
6042             disable sdl2
6043     else
6044         disable sdl2
6045     fi
6046     if test $target_os = "mingw32"; then
6047         sdl2_extralibs="$sdl2_extralibs -mconsole"
6048     fi
6049 fi
6050 enabled sdl2 && add_cflags $sdl2_cflags && add_extralibs $sdl2_extralibs
6051
6052 if enabled decklink; then
6053     case $target_os in
6054         mingw32*|mingw64*|win32|win64)
6055             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6056             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6057             ;;
6058     esac
6059 fi
6060
6061 enabled securetransport &&
6062     check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6063     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext SecItemImport" "-Wl,-framework,CoreFoundation -Wl,-framework,Security" ||
6064         disable securetransport
6065
6066 enabled schannel &&
6067     check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6068     check_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" &&
6069     add_extralibs -lsecur32 ||
6070         disable schannel
6071
6072 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6073 enabled makeinfo \
6074     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6075     && enable makeinfo_html || disable makeinfo_html
6076 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6077 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6078 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6079 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6080
6081 check_header linux/fb.h
6082 check_header linux/videodev.h
6083 check_header linux/videodev2.h
6084 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
6085
6086 check_header sys/videoio.h
6087 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
6088
6089 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6090 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6091 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6092 # w32api 3.12 had it defined wrong
6093 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
6094
6095 check_type "dshow.h" IBaseFilter
6096
6097 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6098 { check_header dev/bktr/ioctl_meteor.h &&
6099   check_header dev/bktr/ioctl_bt848.h; } ||
6100 { check_header machine/ioctl_meteor.h &&
6101   check_header machine/ioctl_bt848.h; } ||
6102 { check_header dev/video/meteor/ioctl_meteor.h &&
6103   check_header dev/video/bktr/ioctl_bt848.h; } ||
6104 check_header dev/ic/bt8xx.h
6105
6106 if check_struct sys/soundcard.h audio_buf_info bytes; then
6107     enable_safe sys/soundcard.h
6108 else
6109     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
6110     #include <sys/soundcard.h>
6111     audio_buf_info abc;
6112 EOF
6113 fi
6114 check_header soundcard.h
6115
6116 enabled_any alsa_indev alsa_outdev &&
6117     check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
6118
6119 enabled jack_indev && check_lib jack jack/jack.h jack_client_open -ljack &&
6120     check_func jack_port_get_latency_range -ljack
6121
6122 enabled_any sndio_indev sndio_outdev && check_lib sndio sndio.h sio_open -lsndio
6123
6124 if enabled libcdio; then
6125     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6126     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6127     die "ERROR: No usable libcdio/cdparanoia found"
6128 fi
6129
6130 enabled libxcb && check_pkg_config "xcb >= 1.4" xcb/xcb.h xcb_connect || disable libxcb
6131
6132 if enabled libxcb; then
6133
6134     enabled libxcb_shm    && check_pkg_config xcb-shm    xcb/shm.h    xcb_shm_attach              || disable libxcb_shm
6135     enabled libxcb_shape  && check_pkg_config xcb-shape  xcb/shape.h  xcb_shape_get_rectangles    || disable libxcb_shape
6136     enabled libxcb_xfixes && check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || disable libxcb_xfixes
6137
6138     add_cflags $xcb_cflags $xcb_shm_cflags $xcb_xfixes_cflags $xcb_shape_cflags
6139     add_extralibs $xcb_extralibs $xcb_shm_extralibs $xcb_xfixes_extralibs $xcb_shape_extralibs
6140 fi
6141
6142 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6143
6144 # d3d11va requires linking directly to dxgi and d3d11 if not building for
6145 # the desktop api partition
6146 check_cpp <<EOF && enable uwp && d3d11va_extralibs="-ldxgi -ld3d11"
6147 #ifdef WINAPI_FAMILY
6148 #include <winapifamily.h>
6149 #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
6150 #error desktop, not uwp
6151 #else
6152 // WINAPI_FAMILY_APP, WINAPI_FAMILY_PHONE_APP => UWP
6153 #endif
6154 #else
6155 #error no family set
6156 #endif
6157 EOF
6158
6159 enabled vaapi &&
6160     check_lib vaapi va/va.h vaInitialize -lva
6161
6162 enabled vaapi &&
6163     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
6164     disable vaapi
6165
6166 enabled vaapi &&
6167     check_lib vaapi_drm "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm
6168
6169 enabled vaapi &&
6170     check_lib vaapi_x11 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 -lX11
6171
6172 enabled vdpau &&
6173     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
6174     disable vdpau
6175
6176 enabled vdpau &&
6177     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6178
6179 enabled crystalhd && check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
6180
6181 if enabled x86; then
6182     case $target_os in
6183         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6184             ;;
6185         *)
6186             disable cuda cuvid nvenc
6187             ;;
6188     esac
6189 else
6190     disable cuda cuvid nvenc
6191 fi
6192
6193 enabled nvenc &&
6194     check_cc -I$source_path <<EOF || disable nvenc
6195 #include "compat/nvenc/nvEncodeAPI.h"
6196 NV_ENCODE_API_FUNCTION_LIST flist;
6197 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6198 int main(void) { return 0; }
6199 EOF
6200
6201 # Funny iconv installations are not unusual, so check it after all flags have been set
6202 enabled iconv && check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6203
6204 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6205
6206 # add some useful compiler flags if supported
6207 check_cflags -Wdeclaration-after-statement
6208 check_cflags -Wall
6209 check_cflags -Wdisabled-optimization
6210 check_cflags -Wpointer-arith
6211 check_cflags -Wredundant-decls
6212 check_cflags -Wwrite-strings
6213 check_cflags -Wtype-limits
6214 check_cflags -Wundef
6215 check_cflags -Wmissing-prototypes
6216 check_cflags -Wno-pointer-to-int-cast
6217 check_cflags -Wstrict-prototypes
6218 check_cflags -Wempty-body
6219
6220 if enabled extra_warnings; then
6221     check_cflags -Wcast-qual
6222     check_cflags -Wextra
6223     check_cflags -Wpedantic
6224 fi
6225
6226 check_disable_warning(){
6227     warning_flag=-W${1#-Wno-}
6228     test_cflags $warning_flag && add_cflags $1
6229 }
6230
6231 check_disable_warning -Wno-parentheses
6232 check_disable_warning -Wno-switch
6233 check_disable_warning -Wno-format-zero-length
6234 check_disable_warning -Wno-pointer-sign
6235 check_disable_warning -Wno-unused-const-variable
6236
6237 check_disable_warning_headers(){
6238     warning_flag=-W${1#-Wno-}
6239     test_cflags $warning_flag && add_cflags_headers $1
6240 }
6241
6242 check_disable_warning_headers -Wno-deprecated-declarations
6243 check_disable_warning_headers -Wno-unused-variable
6244
6245 check_cc <<EOF && enable blocks_extension
6246 void (^block)(void);
6247 EOF
6248
6249 # add some linker flags
6250 check_ldflags -Wl,--warn-common
6251 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6252 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
6253 enabled rpath && add_ldlibflags -Wl,-rpath,$libdir
6254 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6255
6256 # add some strip flags
6257 check_stripflags -x
6258
6259 enabled neon_clobber_test &&
6260     check_ldflags -Wl,--wrap,avcodec_open2              \
6261                   -Wl,--wrap,avcodec_decode_audio4      \
6262                   -Wl,--wrap,avcodec_decode_video2      \
6263                   -Wl,--wrap,avcodec_decode_subtitle2   \
6264                   -Wl,--wrap,avcodec_encode_audio2      \
6265                   -Wl,--wrap,avcodec_encode_video2      \
6266                   -Wl,--wrap,avcodec_encode_subtitle    \
6267                   -Wl,--wrap,avcodec_send_packet        \
6268                   -Wl,--wrap,avcodec_receive_packet     \
6269                   -Wl,--wrap,avcodec_send_frame         \
6270                   -Wl,--wrap,avcodec_receive_frame      \
6271                   -Wl,--wrap,swr_convert                \
6272                   -Wl,--wrap,avresample_convert ||
6273     disable neon_clobber_test
6274
6275 enabled xmm_clobber_test &&
6276     check_ldflags -Wl,--wrap,avcodec_open2              \
6277                   -Wl,--wrap,avcodec_decode_audio4      \
6278                   -Wl,--wrap,avcodec_decode_video2      \
6279                   -Wl,--wrap,avcodec_decode_subtitle2   \
6280                   -Wl,--wrap,avcodec_encode_audio2      \
6281                   -Wl,--wrap,avcodec_encode_video2      \
6282                   -Wl,--wrap,avcodec_encode_subtitle    \
6283                   -Wl,--wrap,avcodec_send_packet        \
6284                   -Wl,--wrap,avcodec_receive_packet     \
6285                   -Wl,--wrap,avcodec_send_frame         \
6286                   -Wl,--wrap,avcodec_receive_frame      \
6287                   -Wl,--wrap,swr_convert                \
6288                   -Wl,--wrap,avresample_convert         \
6289                   -Wl,--wrap,sws_scale ||
6290     disable xmm_clobber_test
6291
6292 check_ld "cc" <<EOF && enable proper_dce
6293 extern const int array[512];
6294 static inline int func(void) { return array[0]; }
6295 int main(void) { return 0; }
6296 EOF
6297
6298 if enabled proper_dce; then
6299     echo "X { local: *; };" > $TMPV
6300     if test_ldflags -Wl,${version_script},$TMPV; then
6301         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6302         check_cc <<EOF && enable symver_asm_label
6303 void ff_foo(void) __asm__ ("av_foo@VERSION");
6304 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6305 EOF
6306         check_cc <<EOF && enable symver_gnu_asm
6307 __asm__(".symver ff_foo,av_foo@VERSION");
6308 void ff_foo(void) {}
6309 EOF
6310     fi
6311 fi
6312
6313 if [ -z "$optflags" ]; then
6314     if enabled small; then
6315         optflags=$cflags_size
6316     elif enabled optimizations; then
6317         optflags=$cflags_speed
6318     else
6319         optflags=$cflags_noopt
6320     fi
6321 fi
6322
6323 if [ -z "$nvccflags" ]; then
6324     nvccflags=$nvccflags_default
6325 fi
6326
6327 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6328     nvccflags="$nvccflags -m64"
6329 else
6330     nvccflags="$nvccflags -m32"
6331 fi
6332
6333 check_optflags(){
6334     check_cflags "$@"
6335     enabled lto && check_ldflags "$@"
6336 }
6337
6338 check_optflags $optflags
6339 check_optflags -fno-math-errno
6340 check_optflags -fno-signed-zeros
6341
6342 if enabled lto; then
6343     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6344     check_cflags  -flto
6345     check_ldflags -flto $cpuflags
6346     disable inline_asm_direct_symbol_refs
6347 fi
6348
6349 enabled ftrapv && check_cflags -ftrapv
6350
6351 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6352 int x;
6353 EOF
6354
6355
6356 if enabled icc; then
6357     # Just warnings, no remarks
6358     check_cflags -w1
6359     # -wd: Disable following warnings
6360     # 144, 167, 556: -Wno-pointer-sign
6361     # 188: enumerated type mixed with another type
6362     # 1292: attribute "foo" ignored
6363     # 1419: external declaration in primary source file
6364     # 10006: ignoring unknown option -fno-signed-zeros
6365     # 10148: ignoring unknown option -Wno-parentheses
6366     # 10156: ignoring option '-W'; no argument required
6367     # 13200: No EMMS instruction before call to function
6368     # 13203: No EMMS instruction before return from function
6369     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6370     # 11030: Warning unknown option --as-needed
6371     # 10156: ignoring option '-export'; no argument required
6372     check_ldflags -wd10156,11030
6373     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6374     enable ebp_available
6375     # The test above does not test linking
6376     enabled lto && disable symver_asm_label
6377     if enabled x86_32; then
6378         icc_version=$($cc -dumpversion)
6379         test ${icc_version%%.*} -ge 11 &&
6380             check_cflags -falign-stack=maintain-16-byte ||
6381             disable aligned_stack
6382     fi
6383 elif enabled ccc; then
6384     # disable some annoying warnings
6385     add_cflags -msg_disable bitnotint
6386     add_cflags -msg_disable mixfuncvoid
6387     add_cflags -msg_disable nonstandcast
6388     add_cflags -msg_disable unsupieee
6389 elif enabled gcc; then
6390     check_optflags -fno-tree-vectorize
6391     check_cflags -Werror=format-security
6392     check_cflags -Werror=implicit-function-declaration
6393     check_cflags -Werror=missing-prototypes
6394     check_cflags -Werror=return-type
6395     check_cflags -Werror=vla
6396     check_cflags -Wformat
6397     check_cflags -fdiagnostics-color=auto
6398     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6399 elif enabled llvm_gcc; then
6400     check_cflags -mllvm -stack-alignment=16
6401 elif enabled clang; then
6402     check_cflags -mllvm -stack-alignment=16
6403     check_cflags -mstack-alignment=16
6404     check_cflags -Qunused-arguments
6405     check_cflags -Werror=implicit-function-declaration
6406     check_cflags -Werror=missing-prototypes
6407     check_cflags -Werror=return-type
6408 elif enabled cparser; then
6409     add_cflags -Wno-missing-variable-declarations
6410     add_cflags -Wno-empty-statement
6411 elif enabled armcc; then
6412     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6413     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6414     # 2523: use of inline assembly is deprecated
6415     add_cflags -W${armcc_opt},--diag_suppress=2523
6416     add_cflags -W${armcc_opt},--diag_suppress=1207
6417     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6418     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6419     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6420     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6421 elif enabled tms470; then
6422     add_cflags -pds=824 -pds=837
6423     disable inline_asm
6424 elif enabled pathscale; then
6425     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6426 elif enabled_any msvc icl; then
6427     enabled x86_32 && disable aligned_stack
6428     enabled_all x86_32 debug && add_cflags -Oy-
6429     enabled debug && add_ldflags -debug
6430     enable pragma_deprecated
6431     if enabled icl; then
6432         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6433         # (correctly) on icl 13.x.
6434         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6435             add_cflags -Qansi-alias
6436         # Some inline asm is not compilable in debug
6437         if enabled debug; then
6438             disable ebp_available
6439             disable ebx_available
6440         fi
6441     fi
6442     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6443     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
6444     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6445     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6446     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6447     # MSVC 2013 and newer can handle it fine.
6448     # If this declspec fails, force including stdlib.h before the restrict redefinition
6449     # happens in config.h.
6450     if [ $_restrict != restrict ]; then
6451         check_cc <<EOF || add_cflags -FIstdlib.h
6452 __declspec($_restrict) void* foo(int);
6453 EOF
6454     fi
6455     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6456     # Issue has been fixed in MSVC v19.00.24218.
6457     check_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6458         check_cflags -d2SSAOptimizer-
6459     # enable utf-8 source processing on VS2015 U2 and newer
6460     check_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6461         add_cflags -utf-8
6462 fi
6463
6464 for pfx in "" host_; do
6465     varname=${pfx%_}cc_type
6466     eval "type=\$$varname"
6467     if [ "$type" = "msvc" ]; then
6468         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6469 static inline int foo(int a) { return a; }
6470 EOF
6471     fi
6472 done
6473
6474 case $as_type in
6475     clang)
6476         add_asflags -Qunused-arguments
6477     ;;
6478 esac
6479
6480 case $ld_type in
6481     clang)
6482         check_ldflags -Qunused-arguments
6483     ;;
6484 esac
6485
6486 case $target_os in
6487     osf1)
6488         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
6489     ;;
6490 esac
6491
6492 enable frame_thread_encoder
6493
6494 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6495
6496 check_deps $CONFIG_LIST       \
6497            $CONFIG_EXTRA      \
6498            $HAVE_LIST         \
6499            $ALL_COMPONENTS    \
6500
6501 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"
6502
6503
6504 if test $target_os = "haiku"; then
6505     disable memalign
6506     disable posix_memalign
6507 fi
6508
6509 # add_dep lib dep
6510 # -> enable ${lib}_deps_${dep}
6511 # -> add $dep to ${lib}_deps only once
6512 add_dep() {
6513     lib=$1
6514     dep=$2
6515     enabled "${lib}_deps_${dep}" && return 0
6516     enable  "${lib}_deps_${dep}"
6517     prepend "${lib}_deps" $dep
6518 }
6519
6520 # merge deps lib components
6521 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
6522 merge_deps() {
6523     lib=$1
6524     shift
6525     for comp in $*; do
6526         enabled $comp || continue
6527         eval "dep=\"\$${comp}_deps\""
6528         for d in $dep; do
6529             add_dep $lib $d
6530         done
6531     done
6532 }
6533
6534 merge_deps libavfilter $FILTER_LIST
6535
6536 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6537
6538 for thread in $THREADS_LIST; do
6539     if enabled $thread; then
6540         test -n "$thread_type" &&
6541             die "ERROR: Only one thread type must be selected." ||
6542             thread_type="$thread"
6543     fi
6544 done
6545
6546 if disabled stdatomic_h; then
6547     if enabled atomics_gcc; then
6548         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6549     elif enabled atomics_win32; then
6550         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6551     elif enabled atomics_suncc; then
6552         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6553     elif enabled pthreads; then
6554         add_compat atomics/pthread/stdatomic.o
6555         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6556     else
6557         enabled threads && die "Threading is enabled, but no atomics are available"
6558         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6559     fi
6560 fi
6561
6562 # Check if requested libraries were found.
6563 for lib in $AUTODETECT_LIBS; do
6564     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6565 done
6566
6567 enabled zlib && add_cppflags -DZLIB_CONST
6568
6569 # conditional library dependencies, in linking order
6570 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6571 enabled afir_filter         && prepend avfilter_deps "avcodec"
6572 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6573 enabled aresample_filter    && prepend avfilter_deps "swresample"
6574 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6575 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6576 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6577 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6578 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6579 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6580 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
6581 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6582 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6583 enabled pan_filter          && prepend avfilter_deps "swresample"
6584 enabled pp_filter           && prepend avfilter_deps "postproc"
6585 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6586 enabled resample_filter && prepend avfilter_deps "avresample"
6587 enabled sab_filter          && prepend avfilter_deps "swscale"
6588 enabled scale_filter    && prepend avfilter_deps "swscale"
6589 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6590 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6591 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6592 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6593 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6594 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
6595 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6596 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6597 enabled spp_filter          && prepend avfilter_deps "avcodec"
6598 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6599 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6600 enabled zoompan_filter      && prepend avfilter_deps "swscale"
6601
6602 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6603
6604 enabled opus_decoder    && prepend avcodec_deps "swresample"
6605
6606 expand_deps(){
6607     lib_deps=${1}_deps
6608     eval "deps=\$$lib_deps"
6609     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6610     unique $lib_deps
6611 }
6612
6613 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6614 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6615
6616 map 'expand_deps $v' $LIBRARY_LIST
6617
6618 license="LGPL version 2.1 or later"
6619 if enabled nonfree; then
6620     license="nonfree and unredistributable"
6621 elif enabled gplv3; then
6622     license="GPL version 3 or later"
6623 elif enabled lgplv3; then
6624     license="LGPL version 3 or later"
6625 elif enabled gpl; then
6626     license="GPL version 2 or later"
6627 fi
6628
6629 if test "$quiet" != "yes"; then
6630
6631 echo "install prefix            $prefix"
6632 echo "source path               $source_path"
6633 echo "C compiler                $cc"
6634 echo "C library                 $libc_type"
6635 if test "$host_cc" != "$cc"; then
6636     echo "host C compiler           $host_cc"
6637     echo "host C library            $host_libc_type"
6638 fi
6639 echo "ARCH                      $arch ($cpu)"
6640 if test "$build_suffix" != ""; then
6641     echo "build suffix              $build_suffix"
6642 fi
6643 if test "$progs_suffix" != ""; then
6644     echo "progs suffix              $progs_suffix"
6645 fi
6646 if test "$extra_version" != ""; then
6647     echo "version string suffix     $extra_version"
6648 fi
6649 echo "big-endian                ${bigendian-no}"
6650 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6651 if enabled x86; then
6652     echo "standalone assembly       ${x86asm-no}"
6653     echo "x86 assembler             ${x86asmexe}"
6654     echo "MMX enabled               ${mmx-no}"
6655     echo "MMXEXT enabled            ${mmxext-no}"
6656     echo "3DNow! enabled            ${amd3dnow-no}"
6657     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6658     echo "SSE enabled               ${sse-no}"
6659     echo "SSSE3 enabled             ${ssse3-no}"
6660     echo "AESNI enabled             ${aesni-no}"
6661     echo "AVX enabled               ${avx-no}"
6662     echo "AVX2 enabled              ${avx2-no}"
6663     echo "XOP enabled               ${xop-no}"
6664     echo "FMA3 enabled              ${fma3-no}"
6665     echo "FMA4 enabled              ${fma4-no}"
6666     echo "i686 features enabled     ${i686-no}"
6667     echo "CMOV is fast              ${fast_cmov-no}"
6668     echo "EBX available             ${ebx_available-no}"
6669     echo "EBP available             ${ebp_available-no}"
6670 fi
6671 if enabled aarch64; then
6672     echo "NEON enabled              ${neon-no}"
6673     echo "VFP enabled               ${vfp-no}"
6674 fi
6675 if enabled arm; then
6676     echo "ARMv5TE enabled           ${armv5te-no}"
6677     echo "ARMv6 enabled             ${armv6-no}"
6678     echo "ARMv6T2 enabled           ${armv6t2-no}"
6679     echo "VFP enabled               ${vfp-no}"
6680     echo "NEON enabled              ${neon-no}"
6681     echo "THUMB enabled             ${thumb-no}"
6682 fi
6683 if enabled mips; then
6684     echo "MIPS FPU enabled          ${mipsfpu-no}"
6685     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6686     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6687     echo "MIPS MSA enabled          ${msa-no}"
6688     echo "LOONGSON MMI enabled      ${mmi-no}"
6689 fi
6690 if enabled ppc; then
6691     echo "AltiVec enabled           ${altivec-no}"
6692     echo "VSX enabled               ${vsx-no}"
6693     echo "POWER8 enabled            ${power8-no}"
6694     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6695     echo "dcbzl available           ${dcbzl-no}"
6696 fi
6697 echo "debug symbols             ${debug-no}"
6698 echo "strip symbols             ${stripping-no}"
6699 echo "optimize for size         ${small-no}"
6700 echo "optimizations             ${optimizations-no}"
6701 echo "static                    ${static-no}"
6702 echo "shared                    ${shared-no}"
6703 echo "postprocessing support    ${postproc-no}"
6704 echo "network support           ${network-no}"
6705 echo "threading support         ${thread_type-no}"
6706 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6707 echo "texi2html enabled         ${texi2html-no}"
6708 echo "perl enabled              ${perl-no}"
6709 echo "pod2man enabled           ${pod2man-no}"
6710 echo "makeinfo enabled          ${makeinfo-no}"
6711 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6712 test -n "$random_seed" &&
6713     echo "random seed               ${random_seed}"
6714 echo
6715
6716 echo "External libraries:"
6717 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_in_columns
6718 echo
6719
6720 echo "External libraries providing hardware acceleration:"
6721 print_enabled '' $HWACCEL_LIBRARY_LIST | print_in_columns
6722 echo
6723
6724 echo "Libraries:"
6725 print_enabled '' $LIBRARY_LIST | print_in_columns
6726 echo
6727
6728 echo "Programs:"
6729 print_enabled '' $PROGRAM_LIST | print_in_columns
6730 echo
6731
6732 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6733     echo "Enabled ${type}s:"
6734     eval list=\$$(toupper $type)_LIST
6735     print_enabled '_*' $list | print_in_columns
6736     echo
6737 done
6738
6739 if test -n "$ignore_tests"; then
6740     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
6741     echo "Ignored FATE tests:"
6742     echo $ignore_tests | print_in_columns
6743     echo
6744 fi
6745
6746 echo "License: $license"
6747
6748 echo "Creating configuration files ..."
6749
6750 fi # test "$quiet" != "yes"
6751
6752 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6753
6754 enabled stripping || strip="echo skipping strip"
6755
6756 config_files="$TMPH ffbuild/config.mak doc/config.texi"
6757
6758 cat > ffbuild/config.mak <<EOF
6759 # Automatically generated by configure - do not modify!
6760 ifndef FFMPEG_CONFIG_MAK
6761 FFMPEG_CONFIG_MAK=1
6762 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6763 prefix=$prefix
6764 LIBDIR=\$(DESTDIR)$libdir
6765 SHLIBDIR=\$(DESTDIR)$shlibdir
6766 INCDIR=\$(DESTDIR)$incdir
6767 BINDIR=\$(DESTDIR)$bindir
6768 DATADIR=\$(DESTDIR)$datadir
6769 DOCDIR=\$(DESTDIR)$docdir
6770 MANDIR=\$(DESTDIR)$mandir
6771 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6772 INSTALL_NAME_DIR=$install_name_dir
6773 SRC_PATH=$source_path
6774 SRC_LINK=$source_link
6775 ifndef MAIN_MAKEFILE
6776 SRC_PATH:=\$(SRC_PATH:.%=..%)
6777 endif
6778 CC_IDENT=$cc_ident
6779 ARCH=$arch
6780 INTRINSICS=$intrinsics
6781 CC=$cc
6782 CXX=$cxx
6783 AS=$as
6784 OBJCC=$objcc
6785 LD=$ld
6786 DEPCC=$dep_cc
6787 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6788 DEPAS=$as
6789 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6790 X86ASM=$x86asmexe
6791 DEPX86ASM=$x86asmexe
6792 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
6793 AR=$ar
6794 ARFLAGS=$arflags
6795 AR_O=$ar_o
6796 RANLIB=$ranlib
6797 STRIP=$strip
6798 NVCC=$nvcc
6799 CP=cp -p
6800 LN_S=$ln_s
6801 CPPFLAGS=$CPPFLAGS
6802 CFLAGS=$CFLAGS
6803 CXXFLAGS=$CXXFLAGS
6804 OBJCFLAGS=$OBJCFLAGS
6805 ASFLAGS=$ASFLAGS
6806 NVCCFLAGS=$nvccflags
6807 AS_C=$AS_C
6808 AS_O=$AS_O
6809 OBJCC_C=$OBJCC_C
6810 OBJCC_E=$OBJCC_E
6811 OBJCC_O=$OBJCC_O
6812 CC_C=$CC_C
6813 CC_E=$CC_E
6814 CC_O=$CC_O
6815 CXX_C=$CXX_C
6816 CXX_O=$CXX_O
6817 NVCC_C=$NVCC_C
6818 NVCC_O=$NVCC_O
6819 LD_O=$LD_O
6820 X86ASM_O=$X86ASM_O
6821 LD_LIB=$LD_LIB
6822 LD_PATH=$LD_PATH
6823 DLLTOOL=$dlltool
6824 WINDRES=$windres
6825 DEPWINDRES=$dep_cc
6826 DOXYGEN=$doxygen
6827 LDFLAGS=$LDFLAGS
6828 LDEXEFLAGS=$LDEXEFLAGS
6829 LDLIBFLAGS=$LDLIBFLAGS
6830 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
6831 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
6832 X86ASMFLAGS=$X86ASMFLAGS
6833 BUILDSUF=$build_suffix
6834 PROGSSUF=$progs_suffix
6835 FULLNAME=$FULLNAME
6836 LIBPREF=$LIBPREF
6837 LIBSUF=$LIBSUF
6838 LIBNAME=$LIBNAME
6839 SLIBPREF=$SLIBPREF
6840 SLIBSUF=$SLIBSUF
6841 EXESUF=$EXESUF
6842 EXTRA_VERSION=$extra_version
6843 CCDEP=$CCDEP
6844 CXXDEP=$CXXDEP
6845 CCDEP_FLAGS=$CCDEP_FLAGS
6846 ASDEP=$ASDEP
6847 ASDEP_FLAGS=$ASDEP_FLAGS
6848 X86ASMDEP=$X86ASMDEP
6849 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
6850 CC_DEPFLAGS=$CC_DEPFLAGS
6851 AS_DEPFLAGS=$AS_DEPFLAGS
6852 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
6853 HOSTCC=$host_cc
6854 HOSTLD=$host_ld
6855 HOSTCFLAGS=$host_cflags
6856 HOSTCPPFLAGS=$host_cppflags
6857 HOSTEXESUF=$HOSTEXESUF
6858 HOSTLDFLAGS=$host_ldflags
6859 HOSTEXTRALIBS=$host_extralibs
6860 DEPHOSTCC=$host_cc
6861 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
6862 HOSTCCDEP=$HOSTCCDEP
6863 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
6864 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
6865 HOSTCC_C=$HOSTCC_C
6866 HOSTCC_O=$HOSTCC_O
6867 HOSTLD_O=$HOSTLD_O
6868 TARGET_EXEC=$target_exec $target_exec_args
6869 TARGET_PATH=$target_path
6870 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
6871 CFLAGS-ffplay=${sdl2_cflags}
6872 CFLAGS_HEADERS=$CFLAGS_HEADERS
6873 ZLIB=$($ldflags_filter -lz)
6874 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
6875 EXTRALIBS=$extralibs
6876 COMPAT_OBJS=$compat_objs
6877 INSTALL=$install
6878 LIBTARGET=${LIBTARGET}
6879 SLIBNAME=${SLIBNAME}
6880 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
6881 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
6882 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
6883 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
6884 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
6885 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
6886 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
6887 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
6888 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
6889 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
6890 NOREDZONE_FLAGS=$noredzone_flags
6891 LIBFUZZER_PATH=$libfuzzer_path
6892 IGNORE_TESTS=$ignore_tests
6893 EOF
6894
6895 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
6896
6897 print_program_extralibs(){
6898     eval "program_extralibs=\$${1}_extralibs"
6899     eval echo "EXTRALIBS-${1}=${program_extralibs}" >> ffbuild/config.mak
6900 }
6901
6902 map 'print_program_extralibs $v' $PROGRAM_LIST
6903
6904 cat > $TMPH <<EOF
6905 /* Automatically generated by configure - do not modify! */
6906 #ifndef FFMPEG_CONFIG_H
6907 #define FFMPEG_CONFIG_H
6908 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
6909 #define FFMPEG_LICENSE "$(c_escape $license)"
6910 #define CONFIG_THIS_YEAR 2017
6911 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
6912 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
6913 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
6914 #define av_restrict $_restrict
6915 #define EXTERN_PREFIX "${extern_prefix}"
6916 #define EXTERN_ASM ${extern_prefix}
6917 #define BUILDSUF "$build_suffix"
6918 #define SLIBSUF "$SLIBSUF"
6919 #define HAVE_MMX2 HAVE_MMXEXT
6920 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
6921 EOF
6922
6923 test -n "$assert_level" &&
6924     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
6925
6926 test -n "$malloc_prefix" &&
6927     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
6928
6929 if enabled x86asm; then
6930     append config_files $TMPASM
6931     printf '' >$TMPASM
6932 fi
6933
6934 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
6935
6936
6937 mkdir -p doc
6938 mkdir -p tests
6939 mkdir -p tests/api
6940 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
6941
6942 print_config ARCH_   "$config_files" $ARCH_LIST
6943 print_config HAVE_   "$config_files" $HAVE_LIST
6944 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
6945                                      $CONFIG_EXTRA      \
6946                                      $ALL_COMPONENTS    \
6947
6948 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
6949 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
6950
6951 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
6952 cp_if_changed $TMPH config.h
6953 touch ffbuild/.config
6954
6955 enabled x86asm && cp_if_changed $TMPASM config.asm
6956
6957 cat > $TMPH <<EOF
6958 /* Generated by ffconf */
6959 #ifndef AVUTIL_AVCONFIG_H
6960 #define AVUTIL_AVCONFIG_H
6961 EOF
6962
6963 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
6964
6965 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
6966
6967 cp_if_changed $TMPH libavutil/avconfig.h
6968
6969 # generate the lists of enabled components
6970 print_enabled_components(){
6971     file=$1
6972     struct_name=$2
6973     name=$3
6974     shift 3
6975     echo "static const $struct_name *$name[] = {" > $TMPH
6976     for c in $*; do
6977         enabled $c && printf "    &ff_%s,\n" $c >> $TMPH
6978     done
6979     echo "    NULL };" >> $TMPH
6980     cp_if_changed $TMPH $file
6981 }
6982
6983 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
6984 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
6985
6986 if test -n "$WARNINGS"; then
6987     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
6988     enabled fatal_warnings && exit 1
6989 fi
6990
6991 # Settings for pkg-config files
6992
6993 cat > ffbuild/config.sh <<EOF
6994 # Automatically generated by configure - do not modify!
6995 shared=$shared
6996 build_suffix=$build_suffix
6997 prefix=$prefix
6998 libdir=$libdir
6999 incdir=$incdir
7000 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
7001 source_path=${source_path}
7002 LIBPREF=${LIBPREF}
7003 LIBSUF=${LIBSUF}
7004
7005 extralibs_avutil="$LIBRT $LIBM"
7006 extralibs_avcodec="$extralibs"
7007 extralibs_avformat="$extralibs"
7008 extralibs_avdevice="$extralibs"
7009 extralibs_avfilter="$extralibs"
7010 extralibs_avresample="$LIBM"
7011 extralibs_postproc=""
7012 extralibs_swscale="$LIBM"
7013 extralibs_swresample="$LIBM $LIBSOXR"
7014 EOF
7015
7016 for lib in $LIBRARY_LIST; do
7017     lib_deps="$(eval echo \$${lib}_deps)"
7018     echo ${lib}_deps=\"$lib_deps\" >> ffbuild/config.sh
7019 done