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