git.sesse.net Git - ffmpeg/blob - configure

   1 #!/bin/sh
   2 #
   3 # FFmpeg configure script
   4 #
   5 # Copyright (c) 2000-2002 Fabrice Bellard
   6 # Copyright (c) 2005-2008 Diego Biurrun
   7 # Copyright (c) 2005-2008 Mans Rullgard
   8 #
   9
  10 # Prevent locale nonsense from breaking basic text processing.
  11 LC_ALL=C
  12 export LC_ALL
  13
  14 # make sure we are running under a compatible shell
  15 # try to make this part work with most shells
  16
  17 try_exec(){
  18     echo "Trying shell $1"
  19     type "$1" > /dev/null 2>&1 && exec "$@"
  20 }
  21
  22 unset foo
  23 (: ${foo%%bar}) 2> /dev/null
  24 E1="$?"
  25
  26 (: ${foo?}) 2> /dev/null
  27 E2="$?"
  28
  29 if test "$E1" != 0 || test "$E2" = 0; then
  30     echo "Broken shell detected.  Trying alternatives."
  31     export FF_CONF_EXEC
  32     if test "0$FF_CONF_EXEC" -lt 1; then
  33         FF_CONF_EXEC=1
  34         try_exec bash "$0" "$@"
  35     fi
  36     if test "0$FF_CONF_EXEC" -lt 2; then
  37         FF_CONF_EXEC=2
  38         try_exec ksh "$0" "$@"
  39     fi
  40     if test "0$FF_CONF_EXEC" -lt 3; then
  41         FF_CONF_EXEC=3
  42         try_exec /usr/xpg4/bin/sh "$0" "$@"
  43     fi
  44     echo "No compatible shell script interpreter found."
  45     echo "This configure script requires a POSIX-compatible shell"
  46     echo "such as bash or ksh."
  47     echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
  48     echo "Instead, install a working POSIX-compatible shell."
  49     echo "Disabling this configure test will create a broken FFmpeg."
  50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
  51         echo "This bash version ($BASH_VERSION) is broken on your platform."
  52         echo "Upgrade to a later version if available."
  53     fi
  54     exit 1
  55 fi
  56
  57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
  58
  59 show_help(){
  60     cat <<EOF
  61 Usage: configure [options]
  62 Options: [defaults in brackets after descriptions]
  63
  64 Help options:
  65   --help                   print this message
  66   --quiet                  Suppress showing informative output
  67   --list-decoders          show all available decoders
  68   --list-encoders          show all available encoders
  69   --list-hwaccels          show all available hardware accelerators
  70   --list-demuxers          show all available demuxers
  71   --list-muxers            show all available muxers
  72   --list-parsers           show all available parsers
  73   --list-protocols         show all available protocols
  74   --list-bsfs              show all available bitstream filters
  75   --list-indevs            show all available input devices
  76   --list-outdevs           show all available output devices
  77   --list-filters           show all available filters
  78
  79 Standard options:
  80   --logfile=FILE           log tests and output to FILE [ffbuild/config.log]
  81   --disable-logging        do not log configure debug information
  82   --fatal-warnings         fail if any configure warning is generated
  83   --prefix=PREFIX          install in PREFIX [$prefix_default]
  84   --bindir=DIR             install binaries in DIR [PREFIX/bin]
  85   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
  86   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
  87   --libdir=DIR             install libs in DIR [PREFIX/lib]
  88   --shlibdir=DIR           install shared libs in DIR [LIBDIR]
  89   --incdir=DIR             install includes in DIR [PREFIX/include]
  90   --mandir=DIR             install man page in DIR [PREFIX/share/man]
  91   --pkgconfigdir=DIR       install pkg-config files in DIR [LIBDIR/pkgconfig]
  92   --enable-rpath           use rpath to allow installing libraries in paths
  93                            not part of the dynamic linker search path
  94                            use rpath when linking programs (USE WITH CARE)
  95   --install-name-dir=DIR   Darwin directory name for installed targets
  96
  97 Licensing options:
  98   --enable-gpl             allow use of GPL code, the resulting libs
  99                            and binaries will be under GPL [no]
 100   --enable-version3        upgrade (L)GPL to version 3 [no]
 101   --enable-nonfree         allow use of nonfree code, the resulting libs
 102                            and binaries will be unredistributable [no]
 103
 104 Configuration options:
 105   --disable-static         do not build static libraries [no]
 106   --enable-shared          build shared libraries [no]
 107   --enable-small           optimize for size instead of speed
 108   --disable-runtime-cpudetect disable detecting CPU capabilities at runtime (smaller binary)
 109   --enable-gray            enable full grayscale support (slower color)
 110   --disable-swscale-alpha  disable alpha channel support in swscale
 111   --disable-all            disable building components, libraries and programs
 112
 113 Program options:
 114   --disable-programs       do not build command line programs
 115   --disable-ffmpeg         disable ffmpeg build
 116   --disable-ffplay         disable ffplay build
 117   --disable-ffprobe        disable ffprobe build
 118   --disable-ffserver       disable ffserver build
 119
 120 Documentation options:
 121   --disable-doc            do not build documentation
 122   --disable-htmlpages      do not build HTML documentation pages
 123   --disable-manpages       do not build man documentation pages
 124   --disable-podpages       do not build POD documentation pages
 125   --disable-txtpages       do not build text documentation pages
 126
 127 Component options:
 128   --disable-avdevice       disable libavdevice build
 129   --disable-avcodec        disable libavcodec build
 130   --disable-avformat       disable libavformat build
 131   --disable-swresample     disable libswresample build
 132   --disable-swscale        disable libswscale build
 133   --disable-postproc       disable libpostproc build
 134   --disable-avfilter       disable libavfilter build
 135   --enable-avresample      enable libavresample build [no]
 136   --disable-pthreads       disable pthreads [autodetect]
 137   --disable-w32threads     disable Win32 threads [autodetect]
 138   --disable-os2threads     disable OS/2 threads [autodetect]
 139   --disable-network        disable network support [no]
 140   --disable-dct            disable DCT code
 141   --disable-dwt            disable DWT code
 142   --disable-error-resilience disable error resilience code
 143   --disable-lsp            disable LSP code
 144   --disable-lzo            disable LZO decoder code
 145   --disable-mdct           disable MDCT code
 146   --disable-rdft           disable RDFT code
 147   --disable-fft            disable FFT code
 148   --disable-faan           disable floating point AAN (I)DCT code
 149   --disable-pixelutils     disable pixel utils in libavutil
 150
 151 Individual component options:
 152   --disable-everything     disable all components listed below
 153   --disable-encoder=NAME   disable encoder NAME
 154   --enable-encoder=NAME    enable encoder NAME
 155   --disable-encoders       disable all encoders
 156   --disable-decoder=NAME   disable decoder NAME
 157   --enable-decoder=NAME    enable decoder NAME
 158   --disable-decoders       disable all decoders
 159   --disable-hwaccel=NAME   disable hwaccel NAME
 160   --enable-hwaccel=NAME    enable hwaccel NAME
 161   --disable-hwaccels       disable all hwaccels
 162   --disable-muxer=NAME     disable muxer NAME
 163   --enable-muxer=NAME      enable muxer NAME
 164   --disable-muxers         disable all muxers
 165   --disable-demuxer=NAME   disable demuxer NAME
 166   --enable-demuxer=NAME    enable demuxer NAME
 167   --disable-demuxers       disable all demuxers
 168   --enable-parser=NAME     enable parser NAME
 169   --disable-parser=NAME    disable parser NAME
 170   --disable-parsers        disable all parsers
 171   --enable-bsf=NAME        enable bitstream filter NAME
 172   --disable-bsf=NAME       disable bitstream filter NAME
 173   --disable-bsfs           disable all bitstream filters
 174   --enable-protocol=NAME   enable protocol NAME
 175   --disable-protocol=NAME  disable protocol NAME
 176   --disable-protocols      disable all protocols
 177   --enable-indev=NAME      enable input device NAME
 178   --disable-indev=NAME     disable input device NAME
 179   --disable-indevs         disable input devices
 180   --enable-outdev=NAME     enable output device NAME
 181   --disable-outdev=NAME    disable output device NAME
 182   --disable-outdevs        disable output devices
 183   --disable-devices        disable all devices
 184   --enable-filter=NAME     enable filter NAME
 185   --disable-filter=NAME    disable filter NAME
 186   --disable-filters        disable all filters
 187
 188 External library support:
 189
 190   Using any of the following switches will allow FFmpeg to link to the
 191   corresponding external library. All the components depending on that library
 192   will become enabled, if all their other dependencies are met and they are not
 193   explicitly disabled. E.g. --enable-libwavpack will enable linking to
 194   libwavpack and allow the libwavpack encoder to be built, unless it is
 195   specifically disabled with --disable-encoder=libwavpack.
 196
 197   Note that only the system libraries are auto-detected. All the other external
 198   libraries must be explicitly enabled.
 199
 200   Also note that the following help text describes the purpose of the libraries
 201   themselves, not all their features will necessarily be usable by FFmpeg.
 202
 203   --enable-avisynth        enable reading of AviSynth script files [no]
 204   --disable-bzlib          disable bzlib [autodetect]
 205   --enable-chromaprint     enable audio fingerprinting with chromaprint [no]
 206   --enable-frei0r          enable frei0r video filtering [no]
 207   --enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
 208                            if openssl, librtmp or gmp is not used [no]
 209   --enable-gmp             enable gmp, needed for rtmp(t)e support
 210                            if openssl or librtmp is not used [no]
 211   --enable-gnutls          enable gnutls, needed for https support
 212                            if openssl is not used [no]
 213   --disable-iconv          disable iconv [autodetect]
 214   --enable-jni             enable JNI support [no]
 215   --enable-ladspa          enable LADSPA audio filtering [no]
 216   --enable-libass          enable libass subtitles rendering,
 217                            needed for subtitles and ass filter [no]
 218   --enable-libbluray       enable BluRay reading using libbluray [no]
 219   --enable-libbs2b         enable bs2b DSP library [no]
 220   --enable-libcaca         enable textual display using libcaca [no]
 221   --enable-libcelt         enable CELT decoding via libcelt [no]
 222   --enable-libcdio         enable audio CD grabbing with libcdio [no]
 223   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 224                            and libraw1394 [no]
 225   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 226   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 227   --enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
 228   --enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
 229   --enable-libfribidi      enable libfribidi, improves drawtext filter [no]
 230   --enable-libgme          enable Game Music Emu via libgme [no]
 231   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 232   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 233   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 234   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
 235   --enable-libmodplug      enable ModPlug via libmodplug [no]
 236   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 237   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 238   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 239   --enable-libopencv       enable video filtering via libopencv [no]
 240   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
 241   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 242   --enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
 243   --enable-libopus         enable Opus de/encoding via libopus [no]
 244   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 245   --enable-librsvg         enable SVG rasterization via librsvg [no]
 246   --enable-librubberband   enable rubberband needed for rubberband filter [no]
 247   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 248   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 249   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
 250   --enable-libsnappy       enable Snappy compression, needed for hap encoding [no]
 251   --enable-libsoxr         enable Include libsoxr resampling [no]
 252   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 253   --enable-libssh          enable SFTP protocol via libssh [no]
 254   --enable-libtesseract    enable Tesseract, needed for ocr filter [no]
 255   --enable-libtheora       enable Theora encoding via libtheora [no]
 256   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 257   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 258   --enable-libvidstab      enable video stabilization using vid.stab [no]
 259   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 260   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 261                            native implementation exists [no]
 262   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 263   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 264   --enable-libwebp         enable WebP encoding via libwebp [no]
 265   --enable-libx264         enable H.264 encoding via x264 [no]
 266   --enable-libx265         enable HEVC encoding via x265 [no]
 267   --enable-libxavs         enable AVS encoding via xavs [no]
 268   --enable-libxcb          enable X11 grabbing using XCB [autodetect]
 269   --enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
 270   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
 271   --enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
 272   --enable-libxvid         enable Xvid encoding via xvidcore,
 273                            native MPEG-4/Xvid encoder exists [no]
 274   --enable-libzimg         enable z.lib, needed for zscale filter [no]
 275   --enable-libzmq          enable message passing via libzmq [no]
 276   --enable-libzvbi         enable teletext support via libzvbi [no]
 277   --disable-lzma           disable lzma [autodetect]
 278   --enable-decklink        enable Blackmagic DeckLink I/O support [no]
 279   --enable-mediacodec      enable Android MediaCodec support [no]
 280   --enable-libmysofa       enable libmysofa, needed for sofalizer filter [no]
 281   --enable-openal          enable OpenAL 1.1 capture support [no]
 282   --enable-opencl          enable OpenCL code
 283   --enable-opengl          enable OpenGL rendering [no]
 284   --enable-openssl         enable openssl, needed for https support
 285                            if gnutls is not used [no]
 286   --disable-schannel       disable SChannel SSP, needed for TLS support on
 287                            Windows if openssl and gnutls are not used [autodetect]
 288   --disable-sdl2           disable sdl2 [autodetect]
 289   --disable-securetransport disable Secure Transport, needed for TLS support
 290                            on OSX if openssl and gnutls are not used [autodetect]
 291   --disable-xlib           disable xlib [autodetect]
 292   --disable-zlib           disable zlib [autodetect]
 293
 294   The following libraries provide various hardware acceleration features:
 295   --disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
 296   --disable-cuda           disable dynamically linked Nvidia CUDA code [autodetect]
 297   --enable-cuda-sdk        enable CUDA features that require the CUDA SDK [no]
 298   --disable-cuvid          disable Nvidia CUVID support [autodetect]
 299   --disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code [autodetect]
 300   --disable-dxva2          disable Microsoft DirectX 9 video acceleration code [autodetect]
 301   --enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
 302   --enable-libnpp          enable Nvidia Performance Primitives-based code [no]
 303   --enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
 304   --disable-nvenc          disable Nvidia video encoding code [autodetect]
 305   --enable-omx             enable OpenMAX IL code [no]
 306   --enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
 307   --disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
 308   --disable-vda            disable Apple Video Decode Acceleration code [autodetect]
 309   --disable-vdpau          disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
 310   --disable-videotoolbox   disable VideoToolbox code [autodetect]
 311
 312 Toolchain options:
 313   --arch=ARCH              select architecture [$arch]
 314   --cpu=CPU                select the minimum required CPU (affects
 315                            instruction selection, may crash on older CPUs)
 316   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 317   --progs-suffix=SUFFIX    program name suffix []
 318   --enable-cross-compile   assume a cross-compiler is used
 319   --sysroot=PATH           root of cross-build tree
 320   --sysinclude=PATH        location of cross-build system headers
 321   --target-os=OS           compiler targets OS [$target_os]
 322   --target-exec=CMD        command to run executables on target
 323   --target-path=DIR        path to view of build directory on target
 324   --target-samples=DIR     path to samples directory on target
 325   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 326   --toolchain=NAME         set tool defaults according to NAME
 327   --nm=NM                  use nm tool NM [$nm_default]
 328   --ar=AR                  use archive tool AR [$ar_default]
 329   --as=AS                  use assembler AS [$as_default]
 330   --ln_s=LN_S              use symbolic link tool LN_S [$ln_s_default]
 331   --strip=STRIP            use strip tool STRIP [$strip_default]
 332   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
 333   --x86asmexe=EXE          use nasm-compatible assembler EXE [$x86asmexe_default]
 334   --cc=CC                  use C compiler CC [$cc_default]
 335   --cxx=CXX                use C compiler CXX [$cxx_default]
 336   --objcc=OCC              use ObjC compiler OCC [$cc_default]
 337   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 338   --nvcc=NVCC              use Nvidia CUDA compiler NVCC [$nvcc_default]
 339   --ld=LD                  use linker LD [$ld_default]
 340   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
 341   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
 342   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
 343   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
 344   --host-cc=HOSTCC         use host C compiler HOSTCC
 345   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 346   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 347   --host-ld=HOSTLD         use host linker HOSTLD
 348   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 349   --host-libs=HLIBS        use libs HLIBS when linking for host
 350   --host-os=OS             compiler host OS [$target_os]
 351   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 352   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 353   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
 354   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 355   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
 356   --extra-ldlibflags=ELDFLAGS add ELDFLAGS to LDLIBFLAGS [$LDLIBFLAGS]
 357   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 358   --extra-version=STRING   version string suffix []
 359   --optflags=OPTFLAGS      override optimization-related compiler flags
 360   --nvccflags=NVCCFLAGS    override nvcc flags [$nvccflags_default]
 361   --build-suffix=SUFFIX    library name suffix []
 362   --enable-pic             build position-independent code
 363   --enable-thumb           compile for Thumb instruction set
 364   --enable-lto             use link-time optimization
 365   --env="ENV=override"     override the environment variables
 366
 367 Advanced options (experts only):
 368   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 369   --custom-allocator=NAME  use a supported custom allocator
 370   --disable-symver         disable symbol versioning
 371   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 372   --disable-safe-bitstream-reader
 373                            disable buffer boundary checking in bitreaders
 374                            (faster, but may crash)
 375   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
 376
 377 Optimization options (experts only):
 378   --disable-asm            disable all assembly optimizations
 379   --disable-altivec        disable AltiVec optimizations
 380   --disable-vsx            disable VSX optimizations
 381   --disable-power8         disable POWER8 optimizations
 382   --disable-amd3dnow       disable 3DNow! optimizations
 383   --disable-amd3dnowext    disable 3DNow! extended optimizations
 384   --disable-mmx            disable MMX optimizations
 385   --disable-mmxext         disable MMXEXT optimizations
 386   --disable-sse            disable SSE optimizations
 387   --disable-sse2           disable SSE2 optimizations
 388   --disable-sse3           disable SSE3 optimizations
 389   --disable-ssse3          disable SSSE3 optimizations
 390   --disable-sse4           disable SSE4 optimizations
 391   --disable-sse42          disable SSE4.2 optimizations
 392   --disable-avx            disable AVX optimizations
 393   --disable-xop            disable XOP optimizations
 394   --disable-fma3           disable FMA3 optimizations
 395   --disable-fma4           disable FMA4 optimizations
 396   --disable-avx2           disable AVX2 optimizations
 397   --disable-aesni          disable AESNI optimizations
 398   --disable-armv5te        disable armv5te optimizations
 399   --disable-armv6          disable armv6 optimizations
 400   --disable-armv6t2        disable armv6t2 optimizations
 401   --disable-vfp            disable VFP optimizations
 402   --disable-neon           disable NEON optimizations
 403   --disable-inline-asm     disable use of inline assembly
 404   --disable-x86asm         disable use of standalone x86 assembly
 405   --disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
 406   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 407   --disable-msa            disable MSA optimizations
 408   --disable-mipsfpu        disable floating point MIPS optimizations
 409   --disable-mmi            disable Loongson SIMD optimizations
 410   --disable-fast-unaligned consider unaligned accesses slow
 411
 412 Developer options (useful when working on FFmpeg itself):
 413   --disable-debug          disable debugging symbols
 414   --enable-debug=LEVEL     set the debug level [$debuglevel]
 415   --disable-optimizations  disable compiler optimizations
 416   --enable-extra-warnings  enable more compiler warnings
 417   --disable-stripping      disable stripping of executables and shared libraries
 418   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 419                            2 causes a slowdown at runtime.
 420   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 421   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 422                            leaks and errors, using the specified valgrind binary.
 423                            Cannot be combined with --target-exec
 424   --enable-ftrapv          Trap arithmetic overflows
 425   --samples=PATH           location of test samples for FATE, if not set use
 426                            \$FATE_SAMPLES at make invocation time.
 427   --enable-neon-clobber-test check NEON registers for clobbering (should be
 428                            used only for debugging purposes)
 429   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 430                            should be used only for debugging purposes)
 431   --enable-random          randomly enable/disable components
 432   --disable-random
 433   --enable-random=LIST     randomly enable/disable specific components or
 434   --disable-random=LIST    component groups. LIST is a comma-separated list
 435                            of NAME[:PROB] entries where NAME is a component
 436                            (group) and PROB the probability associated with
 437                            NAME (default 0.5).
 438   --random-seed=VALUE      seed value for --enable/disable-random
 439   --disable-valgrind-backtrace do not print a backtrace under Valgrind
 440                            (only applies to --disable-optimizations builds)
 441   --enable-osfuzz          Enable building fuzzer tool
 442   --libfuzzer=PATH         path to libfuzzer
 443   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
 444                            in the name) of tests whose result is ignored
 445
 446 NOTE: Object files are built at the place where configure is launched.
 447 EOF
 448   exit 0
 449 }
 450
 451 quotes='""'
 452 if test -t 1 && which tput >/dev/null 2>&1; then
 453     ncolors=$(tput colors)
 454     if test -n "$ncolors" && test $ncolors -ge 8; then
 455         bold_color=$(tput bold)
 456         warn_color=$(tput setaf 3)
 457         error_color=$(tput setaf 1)
 458         reset_color=$(tput sgr0)
 459     fi
 460     # 72 used instead of 80 since that's the default of pr
 461     ncols=$(tput cols)
 462 fi
 463 : ${ncols:=72}
 464
 465 log(){
 466     echo "$@" >> $logfile
 467 }
 468
 469 log_file(){
 470     log BEGIN $1
 471     pr -n -t $1 >> $logfile
 472     log END $1
 473 }
 474
 475 warn(){
 476     log "WARNING: $*"
 477     WARNINGS="${WARNINGS}WARNING: $*\n"
 478 }
 479
 480 die(){
 481     log "$@"
 482     echo "$error_color$bold_color$@$reset_color"
 483     cat <<EOF
 484
 485 If you think configure made a mistake, make sure you are using the latest
 486 version from Git.  If the latest version fails, report the problem to the
 487 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 488 EOF
 489     if disabled logging; then
 490         cat <<EOF
 491 Rerun configure with logging enabled (do not use --disable-logging), and
 492 include the log this produces with your report.
 493 EOF
 494     else
 495         cat <<EOF
 496 Include the log file "$logfile" produced by configure as this will help
 497 solve the problem.
 498 EOF
 499     fi
 500     exit 1
 501 }
 502
 503 # Avoid locale weirdness, besides we really just want to translate ASCII.
 504 toupper(){
 505     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 506 }
 507
 508 tolower(){
 509     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 510 }
 511
 512 c_escape(){
 513     echo "$*" | sed 's/["\\]/\\\0/g'
 514 }
 515
 516 sh_quote(){
 517     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 518     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 519     echo "$v"
 520 }
 521
 522 cleanws(){
 523     echo "$@" | sed 's/^ *//;s/[[:space:]][[:space:]]*/ /g;s/ *$//'
 524 }
 525
 526 filter(){
 527     pat=$1
 528     shift
 529     for v; do
 530         eval "case $v in $pat) printf '%s ' $v ;; esac"
 531     done
 532 }
 533
 534 filter_out(){
 535     pat=$1
 536     shift
 537     for v; do
 538         eval "case $v in $pat) ;; *) printf '%s ' $v ;; esac"
 539     done
 540 }
 541
 542 map(){
 543     m=$1
 544     shift
 545     for v; do eval $m; done
 546 }
 547
 548 add_suffix(){
 549     suffix=$1
 550     shift
 551     for v; do echo ${v}${suffix}; done
 552 }
 553
 554 set_all(){
 555     value=$1
 556     shift
 557     for var in $*; do
 558         eval $var=$value
 559     done
 560 }
 561
 562 set_weak(){
 563     value=$1
 564     shift
 565     for var; do
 566         eval : \${$var:=$value}
 567     done
 568 }
 569
 570 sanitize_var_name(){
 571     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 572 }
 573
 574 set_safe(){
 575     var=$1
 576     shift
 577     eval $(sanitize_var_name "$var")='$*'
 578 }
 579
 580 get_safe(){
 581     eval echo \$$(sanitize_var_name "$1")
 582 }
 583
 584 pushvar(){
 585     for pvar in $*; do
 586         eval level=\${${pvar}_level:=0}
 587         eval ${pvar}_${level}="\$$pvar"
 588         eval ${pvar}_level=$(($level+1))
 589     done
 590 }
 591
 592 popvar(){
 593     for pvar in $*; do
 594         eval level=\${${pvar}_level:-0}
 595         test $level = 0 && continue
 596         eval level=$(($level-1))
 597         eval $pvar="\${${pvar}_${level}}"
 598         eval ${pvar}_level=$level
 599         eval unset ${pvar}_${level}
 600     done
 601 }
 602
 603 request(){
 604     for var in $*; do
 605         eval ${var}_requested=yes
 606         eval $var=
 607     done
 608 }
 609
 610 enable(){
 611     set_all yes $*
 612 }
 613
 614 disable(){
 615     set_all no $*
 616 }
 617
 618 enable_weak(){
 619     set_weak yes $*
 620 }
 621
 622 disable_weak(){
 623     set_weak no $*
 624 }
 625
 626 enable_safe(){
 627     for var; do
 628         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 629     done
 630 }
 631
 632 disable_safe(){
 633     for var; do
 634         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 635     done
 636 }
 637
 638 do_enable_deep(){
 639     for var; do
 640         enabled $var && continue
 641         eval sel="\$${var}_select"
 642         eval sgs="\$${var}_suggest"
 643         pushvar var sgs
 644         enable_deep $sel
 645         popvar sgs
 646         enable_deep_weak $sgs
 647         popvar var
 648     done
 649 }
 650
 651 enable_deep(){
 652     do_enable_deep $*
 653     enable $*
 654 }
 655
 656 enable_deep_weak(){
 657     for var; do
 658         disabled $var && continue
 659         pushvar var
 660         do_enable_deep $var
 661         popvar var
 662         enable_weak $var
 663     done
 664 }
 665
 666 requested(){
 667     test "${1#!}" = "$1" && op='=' || op=!=
 668     eval test "x\$${1#!}_requested" $op "xyes"
 669 }
 670
 671 enabled(){
 672     test "${1#!}" = "$1" && op='=' || op=!=
 673     eval test "x\$${1#!}" $op "xyes"
 674 }
 675
 676 disabled(){
 677     test "${1#!}" = "$1" && op='=' || op=!=
 678     eval test "x\$${1#!}" $op "xno"
 679 }
 680
 681 enabled_all(){
 682     for opt; do
 683         enabled $opt || return 1
 684     done
 685 }
 686
 687 disabled_all(){
 688     for opt; do
 689         disabled $opt || return 1
 690     done
 691 }
 692
 693 enabled_any(){
 694     for opt; do
 695         enabled $opt && return 0
 696     done
 697 }
 698
 699 disabled_any(){
 700     for opt; do
 701         disabled $opt && return 0
 702     done
 703     return 1
 704 }
 705
 706 set_default(){
 707     for opt; do
 708         eval : \${$opt:=\$${opt}_default}
 709     done
 710 }
 711
 712 is_in(){
 713     value=$1
 714     shift
 715     for var in $*; do
 716         [ $var = $value ] && return 0
 717     done
 718     return 1
 719 }
 720
 721 do_check_deps(){
 722     for cfg; do
 723         cfg="${cfg#!}"
 724         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 725         disabled ${cfg}_checking && continue
 726         enable ${cfg}_checking
 727         append allopts $cfg
 728
 729         eval dep_all="\$${cfg}_deps"
 730         eval dep_any="\$${cfg}_deps_any"
 731         eval dep_sel="\$${cfg}_select"
 732         eval dep_sgs="\$${cfg}_suggest"
 733         eval dep_ifa="\$${cfg}_if"
 734         eval dep_ifn="\$${cfg}_if_any"
 735
 736         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 737         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
 738         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 739
 740         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 741         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 742         enabled_all  $dep_all || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not all dependencies are satisfied: $dep_all"; }
 743         enabled_any  $dep_any || { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but not any dependency is satisfied: $dep_any"; }
 744         disabled_any $dep_sel && { disable $cfg && requested $cfg && die "ERROR: $cfg requested, but some selected dependency is unsatisfied: $dep_sel"; }
 745
 746         if enabled $cfg; then
 747             enable_deep $dep_sel
 748             enable_deep_weak $dep_sgs
 749         fi
 750
 751         disable ${cfg}_checking
 752     done
 753 }
 754
 755 check_deps(){
 756     unset allopts
 757
 758     do_check_deps "$@"
 759
 760     for cfg in $allopts; do
 761         enabled $cfg || continue
 762         eval dep_extralibs="\$${cfg}_extralibs"
 763         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
 764     done
 765 }
 766
 767 print_config(){
 768     pfx=$1
 769     files=$2
 770     shift 2
 771     map 'eval echo "$v \${$v:-no}"' "$@" |
 772     awk "BEGIN { split(\"$files\", files) }
 773         {
 774             c = \"$pfx\" toupper(\$1);
 775             v = \$2;
 776             sub(/yes/, 1, v);
 777             sub(/no/,  0, v);
 778             for (f in files) {
 779                 file = files[f];
 780                 if (file ~ /\\.h\$/) {
 781                     printf(\"#define %s %d\\n\", c, v) >>file;
 782                 } else if (file ~ /\\.asm\$/) {
 783                     printf(\"%%define %s %d\\n\", c, v) >>file;
 784                 } else if (file ~ /\\.mak\$/) {
 785                     n = -v ? \"\" : \"!\";
 786                     printf(\"%s%s=yes\\n\", n, c) >>file;
 787                 } else if (file ~ /\\.texi\$/) {
 788                     pre = -v ? \"\" : \"@c \";
 789                     yesno = \$2;
 790                     c2 = tolower(c);
 791                     gsub(/_/, \"-\", c2);
 792                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 793                 }
 794             }
 795         }"
 796 }
 797
 798 print_enabled(){
 799     suf=$1
 800     shift
 801     for v; do
 802         enabled $v && printf "%s\n" ${v%$suf}
 803     done
 804 }
 805
 806 append(){
 807     var=$1
 808     shift
 809     eval "$var=\"\$$var $*\""
 810 }
 811
 812 prepend(){
 813     var=$1
 814     shift
 815     eval "$var=\"$* \$$var\""
 816 }
 817
 818 unique(){
 819     var=$1
 820     uniq_list=""
 821     for tok in $(eval echo \$$var); do
 822         uniq_list="$(filter_out $tok $uniq_list) $tok"
 823     done
 824     eval "$var=\"${uniq_list}\""
 825 }
 826
 827 add_cppflags(){
 828     append CPPFLAGS "$@"
 829 }
 830
 831 add_cflags(){
 832     append CFLAGS $($cflags_filter "$@")
 833 }
 834
 835 add_cflags_headers(){
 836     append CFLAGS_HEADERS $($cflags_filter "$@")
 837 }
 838
 839 add_cxxflags(){
 840     append CXXFLAGS $($cflags_filter "$@")
 841 }
 842
 843 add_asflags(){
 844     append ASFLAGS $($asflags_filter "$@")
 845 }
 846
 847 add_objcflags(){
 848     append OBJCFLAGS $($objcflags_filter "$@")
 849 }
 850
 851 add_ldflags(){
 852     append LDFLAGS $($ldflags_filter "$@")
 853 }
 854
 855 add_ldexeflags(){
 856     append LDEXEFLAGS $($ldflags_filter "$@")
 857 }
 858
 859 add_ldlibflags(){
 860     append LDLIBFLAGS $($ldflags_filter "$@")
 861 }
 862
 863 add_stripflags(){
 864     append ASMSTRIPFLAGS "$@"
 865 }
 866
 867 add_extralibs(){
 868     prepend extralibs $($ldflags_filter "$@")
 869 }
 870
 871 add_host_cppflags(){
 872     append host_cppflags "$@"
 873 }
 874
 875 add_host_cflags(){
 876     append host_cflags $($host_cflags_filter "$@")
 877 }
 878
 879 add_host_ldflags(){
 880     append host_ldflags $($host_ldflags_filter "$@")
 881 }
 882
 883 add_compat(){
 884     append compat_objs $1
 885     shift
 886     map 'add_cppflags -D$v' "$@"
 887 }
 888
 889 check_cmd(){
 890     log "$@"
 891     "$@" >> $logfile 2>&1
 892 }
 893
 894 check_stat(){
 895     log check_stat "$@"
 896     stat "$1" >> $logfile 2>&1
 897 }
 898
 899 cc_o(){
 900     eval printf '%s\\n' $CC_O
 901 }
 902
 903 cc_e(){
 904     eval printf '%s\\n' $CC_E
 905 }
 906
 907 check_cc(){
 908     log check_cc "$@"
 909     cat > $TMPC
 910     log_file $TMPC
 911     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 912 }
 913
 914 check_cxx(){
 915     log check_cxx "$@"
 916     cat > $TMPCPP
 917     log_file $TMPCPP
 918     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 919 }
 920
 921 check_objcc(){
 922     log check_objcc "$@"
 923     cat > $TMPM
 924     log_file $TMPM
 925     check_cmd $objcc -Werror=missing-prototypes $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPM
 926 }
 927
 928 check_cpp(){
 929     log check_cpp "$@"
 930     cat > $TMPC
 931     log_file $TMPC
 932     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 933 }
 934
 935 as_o(){
 936     eval printf '%s\\n' $AS_O
 937 }
 938
 939 check_as(){
 940     log check_as "$@"
 941     cat > $TMPS
 942     log_file $TMPS
 943     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 944 }
 945
 946 check_inline_asm(){
 947     log check_inline_asm "$@"
 948     name="$1"
 949     code="$2"
 950     shift 2
 951     disable $name
 952     check_cc "$@" <<EOF && enable $name
 953 void foo(void){ __asm__ volatile($code); }
 954 EOF
 955 }
 956
 957 check_inline_asm_flags(){
 958     log check_inline_asm_flags "$@"
 959     name="$1"
 960     code="$2"
 961     flags=''
 962     shift 2
 963     while [ "$1" != "" ]; do
 964       append flags $1
 965       shift
 966     done;
 967     disable $name
 968     cat > $TMPC <<EOF
 969 void foo(void){ __asm__ volatile($code); }
 970 EOF
 971     log_file $TMPC
 972     check_cmd $cc $CPPFLAGS $CFLAGS $flags "$@" $CC_C $(cc_o $TMPO) $TMPC &&
 973     enable $name && add_cflags $flags && add_asflags $flags && add_ldflags $flags
 974 }
 975
 976 check_insn(){
 977     log check_insn "$@"
 978     check_inline_asm ${1}_inline "\"$2\""
 979     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 980 }
 981
 982 check_x86asm(){
 983     log check_x86asm "$@"
 984     echo "$1" > $TMPS
 985     log_file $TMPS
 986     shift 1
 987     check_cmd $x86asmexe $X86ASMFLAGS -Werror "$@" -o $TMPO $TMPS
 988 }
 989
 990 ld_o(){
 991     eval printf '%s\\n' $LD_O
 992 }
 993
 994 check_ld(){
 995     log check_ld "$@"
 996     type=$1
 997     shift 1
 998     flags=$(filter_out '-l*|*.so' $@)
 999     libs=$(filter '-l*|*.so' $@)
1000     check_$type $($cflags_filter $flags) || return
1001     flags=$($ldflags_filter $flags)
1002     libs=$($ldflags_filter $libs)
1003     check_cmd $ld $LDFLAGS $LDEXEFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
1004 }
1005
1006 print_include(){
1007     hdr=$1
1008     test "${hdr%.h}" = "${hdr}" &&
1009         echo "#include $hdr"    ||
1010         echo "#include <$hdr>"
1011 }
1012
1013 check_code(){
1014     log check_code "$@"
1015     check=$1
1016     headers=$2
1017     code=$3
1018     shift 3
1019     {
1020         for hdr in $headers; do
1021             print_include $hdr
1022         done
1023         echo "int main(void) { $code; return 0; }"
1024     } | check_$check "$@"
1025 }
1026
1027 check_cppflags(){
1028     log check_cppflags "$@"
1029     check_cpp "$@" <<EOF && append CPPFLAGS "$@"
1030 int x;
1031 EOF
1032 }
1033
1034 test_cflags(){
1035     log test_cflags "$@"
1036     set -- $($cflags_filter "$@")
1037     check_cc "$@" <<EOF
1038 int x;
1039 EOF
1040 }
1041
1042 check_cflags(){
1043     log check_cflags "$@"
1044     test_cflags "$@" && add_cflags "$@"
1045 }
1046
1047 check_cxxflags(){
1048     log check_cxxflags "$@"
1049     set -- $($cflags_filter "$@")
1050     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
1051 int x;
1052 EOF
1053 }
1054
1055 test_objcflags(){
1056     log test_objcflags "$@"
1057     set -- $($objcflags_filter "$@")
1058     check_objcc "$@" <<EOF
1059 int x;
1060 EOF
1061 }
1062
1063 check_objcflags(){
1064     log check_objcflags "$@"
1065     test_objcflags "$@" && add_objcflags "$@"
1066 }
1067
1068 test_ldflags(){
1069     log test_ldflags "$@"
1070     check_ld "cc" "$@" <<EOF
1071 int main(void){ return 0; }
1072 EOF
1073 }
1074
1075 check_ldflags(){
1076     log check_ldflags "$@"
1077     test_ldflags "$@" && add_ldflags "$@"
1078 }
1079
1080 test_stripflags(){
1081     log test_stripflags "$@"
1082     # call check_cc to get a fresh TMPO
1083     check_cc <<EOF
1084 int main(void) { return 0; }
1085 EOF
1086     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
1087 }
1088
1089 check_stripflags(){
1090     log check_stripflags "$@"
1091     test_stripflags "$@" && add_stripflags "$@"
1092 }
1093
1094 check_header(){
1095     log check_header "$@"
1096     header=$1
1097     shift
1098     disable_safe $header
1099     check_cpp "$@" <<EOF && enable_safe $header
1100 #include <$header>
1101 int x;
1102 EOF
1103 }
1104
1105 check_header_objcc(){
1106     log check_header_objcc "$@"
1107     rm -f -- "$TMPO"
1108     header=$1
1109     shift
1110     disable_safe $header
1111     {
1112        echo "#include <$header>"
1113        echo "int main(void) { return 0; }"
1114     } | check_objcc && check_stat "$TMPO" && enable_safe $headers
1115 }
1116
1117 check_func(){
1118     log check_func "$@"
1119     func=$1
1120     shift
1121     disable $func
1122     check_ld "cc" "$@" <<EOF && enable $func
1123 extern int $func();
1124 int main(void){ $func(); }
1125 EOF
1126 }
1127
1128 check_complexfunc(){
1129     log check_complexfunc "$@"
1130     func=$1
1131     narg=$2
1132     shift 2
1133     test $narg = 2 && args="f, g" || args="f * I"
1134     disable $func
1135     check_ld "cc" "$@" <<EOF && enable $func
1136 #include <complex.h>
1137 #include <math.h>
1138 float foo(complex float f, complex float g) { return $func($args); }
1139 int main(void){ return (int) foo; }
1140 EOF
1141 }
1142
1143 check_mathfunc(){
1144     log check_mathfunc "$@"
1145     func=$1
1146     narg=$2
1147     shift 2
1148     test $narg = 2 && args="f, g" || args="f"
1149     disable $func
1150     check_ld "cc" "$@" <<EOF && enable $func
1151 #include <math.h>
1152 float foo(float f, float g) { return $func($args); }
1153 int main(void){ return (int) foo; }
1154 EOF
1155 }
1156
1157 check_func_headers(){
1158     log check_func_headers "$@"
1159     headers=$1
1160     funcs=$2
1161     shift 2
1162     {
1163         for hdr in $headers; do
1164             print_include $hdr
1165         done
1166         echo "#include <stdint.h>"
1167         for func in $funcs; do
1168             echo "long check_$func(void) { return (long) $func; }"
1169         done
1170         echo "int main(void) { int ret = 0;"
1171         # LTO could optimize out the test functions without this
1172         for func in $funcs; do
1173             echo " ret |= ((intptr_t)check_$func) & 0xFFFF;"
1174         done
1175         echo "return ret; }"
1176     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1177 }
1178
1179 check_class_headers_cpp(){
1180     log check_class_headers_cpp "$@"
1181     headers=$1
1182     classes=$2
1183     shift 2
1184     {
1185         for hdr in $headers; do
1186             echo "#include <$hdr>"
1187         done
1188         echo "int main(void) { "
1189         i=1
1190         for class in $classes; do
1191             echo "$class obj$i;"
1192             i=$(expr $i + 1)
1193         done
1194         echo "return 0; }"
1195     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1196 }
1197
1198 check_cpp_condition(){
1199     log check_cpp_condition "$@"
1200     header=$1
1201     condition=$2
1202     shift 2
1203     check_cpp "$@" <<EOF
1204 #include <$header>
1205 #if !($condition)
1206 #error "unsatisfied condition: $condition"
1207 #endif
1208 EOF
1209 }
1210
1211 test_cflags_cc(){
1212     log test_cflags_cc "$@"
1213     flags=$1
1214     header=$2
1215     condition=$3
1216     shift 3
1217     set -- $($cflags_filter "$flags")
1218     check_cc "$@" <<EOF
1219 #include <$header>
1220 #if !($condition)
1221 #error "unsatisfied condition: $condition"
1222 #endif
1223 EOF
1224 }
1225
1226 check_lib(){
1227     log check_lib "$@"
1228     name="$1"
1229     headers="$2"
1230     funcs="$3"
1231     shift 3
1232     disable $name
1233     check_func_headers "$headers" "$funcs" "$@" &&
1234         enable $name && add_extralibs "$@"
1235 }
1236
1237 check_lib_cpp(){
1238     log check_lib_cpp "$@"
1239     headers="$1"
1240     classes="$2"
1241     shift 2
1242     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1243 }
1244
1245 check_pkg_config(){
1246     log check_pkg_config "$@"
1247     pkg_version="$1"
1248     pkg="${1%% *}"
1249     headers="$2"
1250     funcs="$3"
1251     shift 3
1252     check_cmd $pkg_config --exists --print-errors $pkg_version || return
1253     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1254     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1255     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1256         set_safe "${pkg}_cflags"    $pkg_cflags &&
1257         set_safe "${pkg}_extralibs" $pkg_libs
1258 }
1259
1260 check_exec(){
1261     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1262 }
1263
1264 check_exec_crash(){
1265     log check_exec_crash "$@"
1266     code=$(cat)
1267
1268     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1269     # are safe but may not be available everywhere.  Thus we use
1270     # raise(SIGTERM) instead.  The check is run in a subshell so we
1271     # can redirect the "Terminated" message from the shell.  SIGBUS
1272     # is not defined by standard C so it is used conditionally.
1273
1274     (check_exec "$@") >> $logfile 2>&1 <<EOF
1275 #include <signal.h>
1276 static void sighandler(int sig){
1277     raise(SIGTERM);
1278 }
1279 int foo(void){
1280     $code
1281 }
1282 int (*func_ptr)(void) = foo;
1283 int main(void){
1284     signal(SIGILL, sighandler);
1285     signal(SIGFPE, sighandler);
1286     signal(SIGSEGV, sighandler);
1287 #ifdef SIGBUS
1288     signal(SIGBUS, sighandler);
1289 #endif
1290     return func_ptr();
1291 }
1292 EOF
1293 }
1294
1295 check_type(){
1296     log check_type "$@"
1297     headers=$1
1298     type=$2
1299     shift 2
1300     disable_safe "$type"
1301     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1302 }
1303
1304 check_struct(){
1305     log check_struct "$@"
1306     headers=$1
1307     struct=$2
1308     member=$3
1309     shift 3
1310     disable_safe "${struct}_${member}"
1311     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1312         enable_safe "${struct}_${member}"
1313 }
1314
1315 check_builtin(){
1316     log check_builtin "$@"
1317     name=$1
1318     headers=$2
1319     builtin=$3
1320     shift 3
1321     disable "$name"
1322     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1323 }
1324
1325 check_compile_assert(){
1326     log check_compile_assert "$@"
1327     name=$1
1328     headers=$2
1329     condition=$3
1330     shift 3
1331     disable "$name"
1332     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1333 }
1334
1335 require(){
1336     log require "$@"
1337     name_version="$1"
1338     name="${1%% *}"
1339     headers="$2"
1340     func="$3"
1341     shift 3
1342     check_lib $name "$headers" $func "$@" || die "ERROR: $name_version not found"
1343 }
1344
1345 require_cpp(){
1346     name="$1"
1347     headers="$2"
1348     classes="$3"
1349     shift 3
1350     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1351 }
1352
1353 use_pkg_config(){
1354     log use_pkg_config "$@"
1355     pkg="$1"
1356     check_pkg_config "$@" || return 1
1357     add_cflags    $(get_safe "${pkg}_cflags")
1358     add_extralibs $(get_safe "${pkg}_extralibs")
1359 }
1360
1361 require_pkg_config(){
1362     use_pkg_config "$@" || die "ERROR: $pkg not found using pkg-config$pkg_config_fail_message"
1363 }
1364
1365 hostcc_e(){
1366     eval printf '%s\\n' $HOSTCC_E
1367 }
1368
1369 hostcc_o(){
1370     eval printf '%s\\n' $HOSTCC_O
1371 }
1372
1373 check_host_cc(){
1374     log check_host_cc "$@"
1375     cat > $TMPC
1376     log_file $TMPC
1377     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1378 }
1379
1380 check_host_cpp(){
1381     log check_host_cpp "$@"
1382     cat > $TMPC
1383     log_file $TMPC
1384     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1385 }
1386
1387 check_host_cppflags(){
1388     log check_host_cppflags "$@"
1389     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1390 int x;
1391 EOF
1392 }
1393
1394 check_host_cflags(){
1395     log check_host_cflags "$@"
1396     set -- $($host_cflags_filter "$@")
1397     check_host_cc "$@" <<EOF && append host_cflags "$@"
1398 int x;
1399 EOF
1400 }
1401
1402 check_host_cpp_condition(){
1403     log check_host_cpp_condition "$@"
1404     header=$1
1405     condition=$2
1406     shift 2
1407     check_host_cpp "$@" <<EOF
1408 #include <$header>
1409 #if !($condition)
1410 #error "unsatisfied condition: $condition"
1411 #endif
1412 EOF
1413 }
1414
1415 cp_if_changed(){
1416     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1417     mkdir -p "$(dirname $2)"
1418     cp -f "$1" "$2"
1419 }
1420
1421 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1422 # system-dependent things.
1423
1424 AVCODEC_COMPONENTS="
1425     bsfs
1426     decoders
1427     encoders
1428     hwaccels
1429     parsers
1430 "
1431
1432 AVDEVICE_COMPONENTS="
1433     indevs
1434     outdevs
1435 "
1436 AVFILTER_COMPONENTS="
1437     filters
1438 "
1439 AVFORMAT_COMPONENTS="
1440     demuxers
1441     muxers
1442     protocols
1443 "
1444
1445 AVRESAMPLE_COMPONENTS=""
1446 AVUTIL_COMPONENTS=""
1447
1448 COMPONENT_LIST="
1449     $AVCODEC_COMPONENTS
1450     $AVDEVICE_COMPONENTS
1451     $AVFILTER_COMPONENTS
1452     $AVFORMAT_COMPONENTS
1453     $AVRESAMPLE_COMPONENTS
1454     $AVUTIL_COMPONENTS
1455 "
1456
1457 EXAMPLE_LIST="
1458     avio_dir_cmd_example
1459     avio_reading_example
1460     decode_audio_example
1461     decode_video_example
1462     demuxing_decoding_example
1463     encode_audio_example
1464     encode_video_example
1465     extract_mvs_example
1466     filter_audio_example
1467     filtering_audio_example
1468     filtering_video_example
1469     http_multiclient_example
1470     metadata_example
1471     muxing_example
1472     qsvdec_example
1473     remuxing_example
1474     resampling_audio_example
1475     scaling_video_example
1476     transcode_aac_example
1477     transcoding_example
1478 "
1479 EXTERNAL_AUTODETECT_LIBRARY_LIST="
1480     bzlib
1481     iconv
1482     libxcb
1483     libxcb_shm
1484     libxcb_shape
1485     libxcb_xfixes
1486     lzma
1487     schannel
1488     sdl
1489     sdl2
1490     securetransport
1491     xlib
1492     zlib
1493 "
1494
1495 EXTERNAL_LIBRARY_GPL_LIST="
1496     avisynth
1497     frei0r
1498     libcdio
1499     librubberband
1500     libvidstab
1501     libx264
1502     libx265
1503     libxavs
1504     libxvid
1505 "
1506
1507 EXTERNAL_LIBRARY_NONFREE_LIST="
1508     decklink
1509     libfdk_aac
1510     openssl
1511 "
1512
1513 EXTERNAL_LIBRARY_VERSION3_LIST="
1514     gmp
1515     libopencore_amrnb
1516     libopencore_amrwb
1517     libvo_amrwbenc
1518 "
1519
1520 EXTERNAL_LIBRARY_GPLV3_LIST="
1521     libsmbclient
1522 "
1523
1524 EXTERNAL_LIBRARY_LIST="
1525     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1526     $EXTERNAL_LIBRARY_GPL_LIST
1527     $EXTERNAL_LIBRARY_NONFREE_LIST
1528     $EXTERNAL_LIBRARY_VERSION3_LIST
1529     $EXTERNAL_LIBRARY_GPLV3_LIST
1530     chromaprint
1531     crystalhd
1532     gcrypt
1533     gnutls
1534     jni
1535     ladspa
1536     libass
1537     libbluray
1538     libbs2b
1539     libcaca
1540     libcelt
1541     libdc1394
1542     libflite
1543     libfontconfig
1544     libfreetype
1545     libfribidi
1546     libgme
1547     libgsm
1548     libiec61883
1549     libilbc
1550     libkvazaar
1551     libmodplug
1552     libmp3lame
1553     libmysofa
1554     libopencv
1555     libopenh264
1556     libopenjpeg
1557     libopenmpt
1558     libopus
1559     libpulse
1560     librsvg
1561     librtmp
1562     libshine
1563     libsmbclient
1564     libsnappy
1565     libsoxr
1566     libspeex
1567     libssh
1568     libtesseract
1569     libtheora
1570     libtwolame
1571     libv4l2
1572     libvorbis
1573     libvpx
1574     libwavpack
1575     libwebp
1576     libzimg
1577     libzmq
1578     libzvbi
1579     mediacodec
1580     openal
1581     opencl
1582     opengl
1583     videotoolbox
1584 "
1585 HWACCEL_AUTODETECT_LIBRARY_LIST="
1586     audiotoolbox
1587     cuda
1588     cuvid
1589     d3d11va
1590     dxva2
1591     nvenc
1592     vaapi
1593     vda
1594     vdpau
1595     videotoolbox_hwaccel
1596     xvmc
1597 "
1598
1599 HWACCEL_LIBRARY_NONFREE_LIST="
1600     cuda_sdk
1601     libnpp
1602 "
1603
1604 HWACCEL_LIBRARY_LIST="
1605     $HWACCEL_AUTODETECT_LIBRARY_LIST
1606     $HWACCEL_LIBRARY_NONFREE_LIST
1607     libmfx
1608     mmal
1609     omx
1610 "
1611
1612 DOCUMENT_LIST="
1613     doc
1614     htmlpages
1615     manpages
1616     podpages
1617     txtpages
1618 "
1619
1620 FEATURE_LIST="
1621     ftrapv
1622     gray
1623     hardcoded_tables
1624     omx_rpi
1625     runtime_cpudetect
1626     safe_bitstream_reader
1627     shared
1628     small
1629     static
1630     swscale_alpha
1631 "
1632
1633 LIBRARY_LIST="
1634     avcodec
1635     avdevice
1636     avfilter
1637     avformat
1638     avresample
1639     avutil
1640     postproc
1641     swresample
1642     swscale
1643 "
1644
1645 LICENSE_LIST="
1646     gpl
1647     nonfree
1648     version3
1649 "
1650
1651 PROGRAM_LIST="
1652     ffplay
1653     ffprobe
1654     ffserver
1655     ffmpeg
1656 "
1657
1658 SUBSYSTEM_LIST="
1659     dct
1660     dwt
1661     error_resilience
1662     faan
1663     fast_unaligned
1664     fft
1665     lsp
1666     lzo
1667     mdct
1668     pixelutils
1669     network
1670     rdft
1671 "
1672
1673 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1674 CONFIG_LIST="
1675     $DOCUMENT_LIST
1676     $EXAMPLE_LIST
1677     $EXTERNAL_LIBRARY_LIST
1678     $HWACCEL_LIBRARY_LIST
1679     $FEATURE_LIST
1680     $LICENSE_LIST
1681     $LIBRARY_LIST
1682     $PROGRAM_LIST
1683     $SUBSYSTEM_LIST
1684     fontconfig
1685     memory_poisoning
1686     neon_clobber_test
1687     ossfuzz
1688     pic
1689     thumb
1690     valgrind_backtrace
1691     xmm_clobber_test
1692     $COMPONENT_LIST
1693 "
1694
1695 THREADS_LIST="
1696     pthreads
1697     os2threads
1698     w32threads
1699 "
1700
1701 ATOMICS_LIST="
1702     atomics_gcc
1703     atomics_suncc
1704     atomics_win32
1705 "
1706
1707 AUTODETECT_LIBS="
1708     $EXTERNAL_AUTODETECT_LIBRARY_LIST
1709     $HWACCEL_AUTODETECT_LIBRARY_LIST
1710     $THREADS_LIST
1711 "
1712
1713 ARCH_LIST="
1714     aarch64
1715     alpha
1716     arm
1717     avr32
1718     avr32_ap
1719     avr32_uc
1720     bfin
1721     ia64
1722     m68k
1723     mips
1724     mips64
1725     parisc
1726     ppc
1727     ppc64
1728     s390
1729     sh4
1730     sparc
1731     sparc64
1732     tilegx
1733     tilepro
1734     tomi
1735     x86
1736     x86_32
1737     x86_64
1738 "
1739
1740 ARCH_EXT_LIST_ARM="
1741     armv5te
1742     armv6
1743     armv6t2
1744     armv8
1745     neon
1746     vfp
1747     vfpv3
1748     setend
1749 "
1750
1751 ARCH_EXT_LIST_MIPS="
1752     mipsfpu
1753     mips32r2
1754     mips32r5
1755     mips64r2
1756     mips32r6
1757     mips64r6
1758     mipsdsp
1759     mipsdspr2
1760     msa
1761 "
1762
1763 ARCH_EXT_LIST_LOONGSON="
1764     loongson2
1765     loongson3
1766     mmi
1767 "
1768
1769 ARCH_EXT_LIST_X86_SIMD="
1770     aesni
1771     amd3dnow
1772     amd3dnowext
1773     avx
1774     avx2
1775     fma3
1776     fma4
1777     mmx
1778     mmxext
1779     sse
1780     sse2
1781     sse3
1782     sse4
1783     sse42
1784     ssse3
1785     xop
1786 "
1787
1788 ARCH_EXT_LIST_PPC="
1789     altivec
1790     dcbzl
1791     ldbrx
1792     power8
1793     ppc4xx
1794     vsx
1795 "
1796
1797 ARCH_EXT_LIST_X86="
1798     $ARCH_EXT_LIST_X86_SIMD
1799     cpunop
1800     i686
1801 "
1802
1803 ARCH_EXT_LIST="
1804     $ARCH_EXT_LIST_ARM
1805     $ARCH_EXT_LIST_PPC
1806     $ARCH_EXT_LIST_X86
1807     $ARCH_EXT_LIST_MIPS
1808     $ARCH_EXT_LIST_LOONGSON
1809 "
1810
1811 ARCH_FEATURES="
1812     aligned_stack
1813     fast_64bit
1814     fast_clz
1815     fast_cmov
1816     local_aligned_8
1817     local_aligned_16
1818     local_aligned_32
1819     simd_align_16
1820     simd_align_32
1821 "
1822
1823 BUILTIN_LIST="
1824     atomic_cas_ptr
1825     machine_rw_barrier
1826     MemoryBarrier
1827     mm_empty
1828     rdtsc
1829     sarestart
1830     sem_timedwait
1831     sync_val_compare_and_swap
1832 "
1833 HAVE_LIST_CMDLINE="
1834     inline_asm
1835     symver
1836     x86asm
1837 "
1838
1839 HAVE_LIST_PUB="
1840     bigendian
1841     fast_unaligned
1842 "
1843
1844 HEADERS_LIST="
1845     alsa_asoundlib_h
1846     altivec_h
1847     arpa_inet_h
1848     asm_types_h
1849     cdio_paranoia_h
1850     cdio_paranoia_paranoia_h
1851     cuda_h
1852     d3d11_h
1853     dispatch_dispatch_h
1854     dev_bktr_ioctl_bt848_h
1855     dev_bktr_ioctl_meteor_h
1856     dev_ic_bt8xx_h
1857     dev_video_bktr_ioctl_bt848_h
1858     dev_video_meteor_ioctl_meteor_h
1859     direct_h
1860     dirent_h
1861     dlfcn_h
1862     dxva_h
1863     ES2_gl_h
1864     gsm_h
1865     io_h
1866     mach_mach_time_h
1867     machine_ioctl_bt848_h
1868     machine_ioctl_meteor_h
1869     malloc_h
1870     opencv2_core_core_c_h
1871     openjpeg_2_1_openjpeg_h
1872     openjpeg_2_0_openjpeg_h
1873     openjpeg_1_5_openjpeg_h
1874     OpenGL_gl3_h
1875     poll_h
1876     sndio_h
1877     soundcard_h
1878     stdatomic_h
1879     sys_mman_h
1880     sys_param_h
1881     sys_resource_h
1882     sys_select_h
1883     sys_soundcard_h
1884     sys_time_h
1885     sys_un_h
1886     sys_videoio_h
1887     termios_h
1888     udplite_h
1889     unistd_h
1890     valgrind_valgrind_h
1891     windows_h
1892     winsock2_h
1893 "
1894
1895 INTRINSICS_LIST="
1896     intrinsics_neon
1897 "
1898
1899 COMPLEX_FUNCS="
1900     cabs
1901     cexp
1902 "
1903
1904 MATH_FUNCS="
1905     atanf
1906     atan2f
1907     cbrt
1908     cbrtf
1909     copysign
1910     cosf
1911     erf
1912     exp2
1913     exp2f
1914     expf
1915     hypot
1916     isfinite
1917     isinf
1918     isnan
1919     ldexpf
1920     llrint
1921     llrintf
1922     log2
1923     log2f
1924     log10f
1925     lrint
1926     lrintf
1927     powf
1928     rint
1929     round
1930     roundf
1931     sinf
1932     trunc
1933     truncf
1934 "
1935
1936 SYSTEM_FUNCS="
1937     access
1938     aligned_malloc
1939     arc4random
1940     clock_gettime
1941     closesocket
1942     CommandLineToArgvW
1943     CoTaskMemFree
1944     CryptGenRandom
1945     dlopen
1946     fcntl
1947     flt_lim
1948     fork
1949     getaddrinfo
1950     gethrtime
1951     getopt
1952     GetProcessAffinityMask
1953     GetProcessMemoryInfo
1954     GetProcessTimes
1955     getrusage
1956     GetSystemTimeAsFileTime
1957     gettimeofday
1958     glob
1959     glXGetProcAddress
1960     gmtime_r
1961     inet_aton
1962     isatty
1963     jack_port_get_latency_range
1964     kbhit
1965     LoadLibrary
1966     localtime_r
1967     lstat
1968     lzo1x_999_compress
1969     mach_absolute_time
1970     MapViewOfFile
1971     memalign
1972     mkstemp
1973     mmap
1974     mprotect
1975     nanosleep
1976     PeekNamedPipe
1977     posix_memalign
1978     pthread_cancel
1979     sched_getaffinity
1980     SetConsoleTextAttribute
1981     SetConsoleCtrlHandler
1982     setmode
1983     setrlimit
1984     Sleep
1985     strerror_r
1986     sysconf
1987     sysctl
1988     usleep
1989     UTGetOSTypeFromString
1990     VirtualAlloc
1991     wglGetProcAddress
1992 "
1993
1994 TOOLCHAIN_FEATURES="
1995     as_dn_directive
1996     as_fpu_directive
1997     as_func
1998     as_object_arch
1999     asm_mod_q
2000     attribute_may_alias
2001     attribute_packed
2002     blocks_extension
2003     ebp_available
2004     ebx_available
2005     gnu_as
2006     gnu_windres
2007     ibm_asm
2008     inline_asm_direct_symbol_refs
2009     inline_asm_labels
2010     inline_asm_nonlocal_labels
2011     pragma_deprecated
2012     rsync_contimeout
2013     symver_asm_label
2014     symver_gnu_asm
2015     vfp_args
2016     xform_asm
2017     xmm_clobbers
2018 "
2019
2020 TYPES_LIST="
2021     CONDITION_VARIABLE_Ptr
2022     socklen_t
2023     struct_addrinfo
2024     struct_group_source_req
2025     struct_ip_mreq_source
2026     struct_ipv6_mreq
2027     struct_msghdr_msg_flags
2028     struct_pollfd
2029     struct_rusage_ru_maxrss
2030     struct_sctp_event_subscribe
2031     struct_sockaddr_in6
2032     struct_sockaddr_sa_len
2033     struct_sockaddr_storage
2034     struct_stat_st_mtim_tv_nsec
2035     struct_v4l2_frmivalenum_discrete
2036 "
2037
2038 HAVE_LIST="
2039     $ARCH_EXT_LIST
2040     $(add_suffix _external $ARCH_EXT_LIST)
2041     $(add_suffix _inline   $ARCH_EXT_LIST)
2042     $ARCH_FEATURES
2043     $ATOMICS_LIST
2044     $BUILTIN_LIST
2045     $COMPLEX_FUNCS
2046     $HAVE_LIST_CMDLINE
2047     $HAVE_LIST_PUB
2048     $HEADERS_LIST
2049     $INTRINSICS_LIST
2050     $MATH_FUNCS
2051     $SYSTEM_FUNCS
2052     $THREADS_LIST
2053     $TOOLCHAIN_FEATURES
2054     $TYPES_LIST
2055     alsa
2056     atomics_native
2057     dos_paths
2058     dxva2_lib
2059     dxva2api_cobj
2060     jack
2061     libc_msvcrt
2062     makeinfo
2063     makeinfo_html
2064     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
2065     perl
2066     pod2man
2067     sdl2
2068     section_data_rel_ro
2069     sndio
2070     texi2html
2071     threads
2072     vaapi_drm
2073     vaapi_x11
2074     vdpau_x11
2075     winrt
2076 "
2077
2078 # options emitted with CONFIG_ prefix but not available on the command line
2079 CONFIG_EXTRA="
2080     aandcttables
2081     ac3dsp
2082     audio_frame_queue
2083     audiodsp
2084     blockdsp
2085     bswapdsp
2086     cabac
2087     dirac_parse
2088     dvprofile
2089     exif
2090     faandct
2091     faanidct
2092     fdctdsp
2093     flacdsp
2094     fmtconvert
2095     frame_thread_encoder
2096     g722dsp
2097     golomb
2098     gplv3
2099     h263dsp
2100     h264chroma
2101     h264dsp
2102     h264parse
2103     h264pred
2104     h264qpel
2105     hevcparse
2106     hpeldsp
2107     huffman
2108     huffyuvdsp
2109     huffyuvencdsp
2110     idctdsp
2111     iirfilter
2112     mdct15
2113     intrax8
2114     iso_media
2115     ividsp
2116     jpegtables
2117     lgplv3
2118     libx262
2119     llauddsp
2120     llviddsp
2121     llvidencdsp
2122     lpc
2123     lzf
2124     me_cmp
2125     mpeg_er
2126     mpegaudio
2127     mpegaudiodsp
2128     mpegaudioheader
2129     mpegvideo
2130     mpegvideoenc
2131     mss34dsp
2132     pixblockdsp
2133     qpeldsp
2134     qsv
2135     qsvdec
2136     qsvenc
2137     rangecoder
2138     riffdec
2139     riffenc
2140     rtpdec
2141     rtpenc_chain
2142     rv34dsp
2143     sinewin
2144     snappy
2145     srtp
2146     startcode
2147     texturedsp
2148     texturedspenc
2149     tpeldsp
2150     vaapi_encode
2151     vc1dsp
2152     videodsp
2153     vp3dsp
2154     vp56dsp
2155     vp8dsp
2156     vt_bt2020
2157     wma_freqs
2158     wmv2dsp
2159 "
2160
2161 CMDLINE_SELECT="
2162     $ARCH_EXT_LIST
2163     $CONFIG_LIST
2164     $HAVE_LIST_CMDLINE
2165     $THREADS_LIST
2166     asm
2167     cross_compile
2168     debug
2169     extra_warnings
2170     logging
2171     lto
2172     optimizations
2173     rpath
2174     stripping
2175 "
2176
2177 PATHS_LIST="
2178     bindir
2179     datadir
2180     docdir
2181     incdir
2182     libdir
2183     mandir
2184     pkgconfigdir
2185     prefix
2186     shlibdir
2187     install_name_dir
2188 "
2189
2190 CMDLINE_SET="
2191     $PATHS_LIST
2192     ar
2193     arch
2194     as
2195     assert_level
2196     build_suffix
2197     cc
2198     objcc
2199     cpu
2200     cross_prefix
2201     custom_allocator
2202     cxx
2203     dep_cc
2204     doxygen
2205     env
2206     extra_version
2207     gas
2208     host_cc
2209     host_cflags
2210     host_extralibs
2211     host_ld
2212     host_ldflags
2213     host_os
2214     ignore_tests
2215     install
2216     ld
2217     ln_s
2218     logfile
2219     malloc_prefix
2220     nm
2221     optflags
2222     nvccflags
2223     pkg_config
2224     pkg_config_flags
2225     progs_suffix
2226     random_seed
2227     ranlib
2228     samples
2229     strip
2230     sws_max_filter_size
2231     sysinclude
2232     sysroot
2233     target_exec
2234     target_os
2235     target_path
2236     target_samples
2237     tempprefix
2238     toolchain
2239     valgrind
2240     x86asmexe
2241 "
2242
2243 CMDLINE_APPEND="
2244     extra_cflags
2245     extra_cxxflags
2246     extra_objcflags
2247     host_cppflags
2248 "
2249
2250 # code dependency declarations
2251
2252 # architecture extensions
2253
2254 armv5te_deps="arm"
2255 armv6_deps="arm"
2256 armv6t2_deps="arm"
2257 armv8_deps="aarch64"
2258 neon_deps_any="aarch64 arm"
2259 intrinsics_neon_deps="neon"
2260 vfp_deps_any="aarch64 arm"
2261 vfpv3_deps="vfp"
2262 setend_deps="arm"
2263
2264 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
2265
2266 loongson2_deps="mips"
2267 loongson3_deps="mips"
2268 mipsfpu_deps="mips"
2269 mipsdsp_deps="mips"
2270 mipsdspr2_deps="mips"
2271 mips32r2_deps="mips"
2272 mips32r5_deps="mips"
2273 mips32r6_deps="mips"
2274 mips64r2_deps="mips"
2275 mips64r6_deps="mips"
2276 msa_deps="mipsfpu"
2277 mmi_deps="mips"
2278
2279 altivec_deps="ppc"
2280 dcbzl_deps="ppc"
2281 ldbrx_deps="ppc"
2282 ppc4xx_deps="ppc"
2283 vsx_deps="altivec"
2284 power8_deps="vsx"
2285
2286 cpunop_deps="i686"
2287 x86_64_select="i686"
2288 x86_64_suggest="fast_cmov"
2289
2290 amd3dnow_deps="mmx"
2291 amd3dnowext_deps="amd3dnow"
2292 i686_deps="x86"
2293 mmx_deps="x86"
2294 mmxext_deps="mmx"
2295 sse_deps="mmxext"
2296 sse2_deps="sse"
2297 sse3_deps="sse2"
2298 ssse3_deps="sse3"
2299 sse4_deps="ssse3"
2300 sse42_deps="sse4"
2301 aesni_deps="sse42"
2302 avx_deps="sse42"
2303 xop_deps="avx"
2304 fma3_deps="avx"
2305 fma4_deps="avx"
2306 avx2_deps="avx"
2307
2308 mmx_external_deps="x86asm"
2309 mmx_inline_deps="inline_asm"
2310 mmx_suggest="mmx_external mmx_inline"
2311
2312 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2313     eval dep=\$${ext}_deps
2314     eval ${ext}_external_deps='"${dep}_external"'
2315     eval ${ext}_inline_deps='"${dep}_inline"'
2316     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2317 done
2318
2319 aligned_stack_if_any="aarch64 ppc x86"
2320 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2321 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2322 fast_unaligned_if_any="aarch64 ppc x86"
2323 simd_align_16_if_any="altivec neon sse"
2324 simd_align_32_if_any="avx"
2325
2326 # system capabilities
2327 symver_if_any="symver_asm_label symver_gnu_asm"
2328 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
2329
2330 # threading support
2331 atomics_gcc_if="sync_val_compare_and_swap"
2332 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2333 atomics_win32_if="MemoryBarrier"
2334 atomics_native_if_any="$ATOMICS_LIST"
2335 w32threads_deps="atomics_native"
2336 threads_if_any="$THREADS_LIST"
2337
2338 # subsystems
2339 dct_select="rdft"
2340 dirac_parse_select="golomb"
2341 error_resilience_select="me_cmp"
2342 faandct_deps="faan fdctdsp"
2343 faanidct_deps="faan idctdsp"
2344 h264dsp_select="startcode"
2345 hevcparse_select="golomb"
2346 frame_thread_encoder_deps="encoders threads"
2347 intrax8_select="blockdsp idctdsp"
2348 mdct_select="fft"
2349 mdct15_select="fft"
2350 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2351 mpeg_er_select="error_resilience"
2352 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2353 mpegaudiodsp_select="dct"
2354 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp mpeg_er videodsp"
2355 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2356 vc1dsp_select="h264chroma qpeldsp startcode"
2357 rdft_select="fft"
2358
2359 # decoders / encoders
2360 aac_decoder_select="mdct15 mdct sinewin"
2361 aac_fixed_decoder_select="mdct sinewin"
2362 aac_encoder_select="audio_frame_queue iirfilter lpc mdct sinewin"
2363 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2364 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2365 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2366 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2367 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2368 adpcm_g722_decoder_select="g722dsp"
2369 adpcm_g722_encoder_select="g722dsp"
2370 aic_decoder_select="golomb idctdsp"
2371 alac_encoder_select="lpc"
2372 als_decoder_select="bswapdsp"
2373 amrnb_decoder_select="lsp"
2374 amrwb_decoder_select="lsp"
2375 amv_decoder_select="sp5x_decoder exif"
2376 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
2377 ape_decoder_select="bswapdsp llauddsp"
2378 apng_decoder_select="zlib"
2379 apng_encoder_select="llvidencdsp zlib"
2380 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2381 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2382 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2383 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2384 atrac1_decoder_select="mdct sinewin"
2385 atrac3_decoder_select="mdct"
2386 atrac3p_decoder_select="mdct sinewin"
2387 avrn_decoder_select="exif jpegtables"
2388 bink_decoder_select="blockdsp hpeldsp"
2389 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2390 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2391 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2392 clearvideo_decoder_select="idctdsp"
2393 cllc_decoder_select="bswapdsp"
2394 comfortnoise_encoder_select="lpc"
2395 cook_decoder_select="audiodsp mdct sinewin"
2396 cscd_decoder_select="lzo"
2397 cscd_decoder_suggest="zlib"
2398 dca_decoder_select="mdct"
2399 dds_decoder_select="texturedsp"
2400 dirac_decoder_select="dirac_parse dwt golomb videodsp mpegvideoenc"
2401 dnxhd_decoder_select="blockdsp idctdsp"
2402 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2403 dvvideo_decoder_select="dvprofile idctdsp"
2404 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2405 dxa_decoder_select="zlib"
2406 dxv_decoder_select="lzf texturedsp"
2407 eac3_decoder_select="ac3_decoder"
2408 eac3_encoder_select="ac3_encoder"
2409 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2410 eatgq_decoder_select="aandcttables"
2411 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2412 exr_decoder_select="zlib"
2413 ffv1_decoder_select="rangecoder"
2414 ffv1_encoder_select="rangecoder"
2415 ffvhuff_decoder_select="huffyuv_decoder"
2416 ffvhuff_encoder_select="huffyuv_encoder"
2417 fic_decoder_select="golomb"
2418 flac_decoder_select="flacdsp"
2419 flac_encoder_select="bswapdsp flacdsp lpc"
2420 flashsv2_decoder_select="zlib"
2421 flashsv2_encoder_select="zlib"
2422 flashsv_decoder_select="zlib"
2423 flashsv_encoder_select="zlib"
2424 flv_decoder_select="h263_decoder"
2425 flv_encoder_select="h263_encoder"
2426 fourxm_decoder_select="blockdsp bswapdsp"
2427 fraps_decoder_select="bswapdsp huffman"
2428 g2m_decoder_select="blockdsp idctdsp jpegtables zlib"
2429 g729_decoder_select="audiodsp"
2430 h261_decoder_select="mpegvideo"
2431 h261_encoder_select="aandcttables mpegvideoenc"
2432 h263_decoder_select="h263_parser h263dsp mpegvideo qpeldsp"
2433 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2434 h263i_decoder_select="h263_decoder"
2435 h263p_decoder_select="h263_decoder"
2436 h263p_encoder_select="h263_encoder"
2437 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2438 h264_decoder_suggest="error_resilience"
2439 hap_decoder_select="snappy texturedsp"
2440 hap_encoder_deps="libsnappy"
2441 hap_encoder_select="texturedspenc"
2442 hevc_decoder_select="bswapdsp cabac golomb hevcparse videodsp"
2443 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2444 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
2445 iac_decoder_select="imc_decoder"
2446 imc_decoder_select="bswapdsp fft mdct sinewin"
2447 indeo3_decoder_select="hpeldsp"
2448 indeo4_decoder_select="ividsp"
2449 indeo5_decoder_select="ividsp"
2450 interplay_video_decoder_select="hpeldsp"
2451 jpegls_decoder_select="mjpeg_decoder"
2452 jv_decoder_select="blockdsp"
2453 lagarith_decoder_select="llviddsp"
2454 ljpeg_encoder_select="aandcttables idctdsp jpegtables mpegvideoenc"
2455 magicyuv_decoder_select="llviddsp"
2456 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2457 metasound_decoder_select="lsp mdct sinewin"
2458 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2459 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp jpegtables"
2460 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2461 mjpegb_decoder_select="mjpeg_decoder"
2462 mlp_decoder_select="mlp_parser"
2463 mlp_encoder_select="lpc"
2464 motionpixels_decoder_select="bswapdsp"
2465 mp1_decoder_select="mpegaudio"
2466 mp1float_decoder_select="mpegaudio"
2467 mp2_decoder_select="mpegaudio"
2468 mp2float_decoder_select="mpegaudio"
2469 mp3_decoder_select="mpegaudio"
2470 mp3adu_decoder_select="mpegaudio"
2471 mp3adufloat_decoder_select="mpegaudio"
2472 mp3float_decoder_select="mpegaudio"
2473 mp3on4_decoder_select="mpegaudio"
2474 mp3on4float_decoder_select="mpegaudio"
2475 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2476 mpc8_decoder_select="mpegaudiodsp"
2477 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2478 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2479 mpegvideo_decoder_select="mpegvideo"
2480 mpeg1video_decoder_select="mpegvideo"
2481 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2482 mpeg2video_decoder_select="mpegvideo"
2483 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2484 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2485 mpeg4_encoder_select="h263_encoder"
2486 msa1_decoder_select="mss34dsp"
2487 mscc_decoder_select="zlib"
2488 msmpeg4v1_decoder_select="h263_decoder"
2489 msmpeg4v2_decoder_select="h263_decoder"
2490 msmpeg4v2_encoder_select="h263_encoder"
2491 msmpeg4v3_decoder_select="h263_decoder"
2492 msmpeg4v3_encoder_select="h263_encoder"
2493 mss2_decoder_select="mpegvideo qpeldsp vc1_decoder"
2494 mts2_decoder_select="mss34dsp"
2495 mxpeg_decoder_select="mjpeg_decoder"
2496 nellymoser_decoder_select="mdct sinewin"
2497 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2498 nuv_decoder_select="idctdsp lzo"
2499 on2avc_decoder_select="mdct"
2500 opus_decoder_deps="swresample"
2501 opus_decoder_select="mdct15"
2502 opus_encoder_select="audio_frame_queue mdct15"
2503 png_decoder_select="zlib"
2504 png_encoder_select="llvidencdsp zlib"
2505 prores_decoder_select="blockdsp idctdsp"
2506 prores_encoder_select="fdctdsp"
2507 qcelp_decoder_select="lsp"
2508 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2509 ra_144_decoder_select="audiodsp"
2510 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2511 ralf_decoder_select="golomb"
2512 rawvideo_decoder_select="bswapdsp"
2513 rscc_decoder_select="zlib"
2514 rtjpeg_decoder_select="me_cmp"
2515 rv10_decoder_select="h263_decoder"
2516 rv10_encoder_select="h263_encoder"
2517 rv20_decoder_select="h263_decoder"
2518 rv20_encoder_select="h263_encoder"
2519 rv30_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2520 rv40_decoder_select="golomb h264pred h264qpel mpegvideo rv34dsp"
2521 screenpresso_decoder_select="zlib"
2522 shorten_decoder_select="bswapdsp"
2523 sipr_decoder_select="lsp"
2524 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2525 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2526 sonic_decoder_select="golomb rangecoder"
2527 sonic_encoder_select="golomb rangecoder"
2528 sonic_ls_encoder_select="golomb rangecoder"
2529 sp5x_decoder_select="mjpeg_decoder"
2530 srgc_decoder_select="zlib"
2531 svq1_decoder_select="hpeldsp"
2532 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2533 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2534 svq3_decoder_suggest="zlib"
2535 tak_decoder_select="audiodsp"
2536 tdsc_decoder_select="zlib mjpeg_decoder"
2537 theora_decoder_select="vp3_decoder"
2538 thp_decoder_select="mjpeg_decoder"
2539 tiff_decoder_suggest="zlib lzma"
2540 tiff_encoder_suggest="zlib"
2541 truehd_decoder_select="mlp_parser"
2542 truehd_encoder_select="lpc"
2543 truemotion2_decoder_select="bswapdsp"
2544 truespeech_decoder_select="bswapdsp"
2545 tscc_decoder_select="zlib"
2546 twinvq_decoder_select="mdct lsp sinewin"
2547 txd_decoder_select="texturedsp"
2548 utvideo_decoder_select="bswapdsp llviddsp"
2549 utvideo_encoder_select="bswapdsp huffman llvidencdsp"
2550 vble_decoder_select="llviddsp"
2551 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
2552 vc1_qsv_decoder_deps="libmfx"
2553 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2554 vc1image_decoder_select="vc1_decoder"
2555 vorbis_decoder_select="mdct"
2556 vorbis_encoder_select="mdct"
2557 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2558 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2559 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2560 vp6a_decoder_select="vp6_decoder"
2561 vp6f_decoder_select="vp6_decoder"
2562 vp7_decoder_select="h264pred videodsp vp8dsp"
2563 vp8_decoder_select="h264pred videodsp vp8dsp"
2564 vp9_decoder_select="videodsp vp9_parser"
2565 webp_decoder_select="vp8_decoder exif"
2566 wmalossless_decoder_select="llauddsp"
2567 wmapro_decoder_select="mdct sinewin wma_freqs"
2568 wmav1_decoder_select="mdct sinewin wma_freqs"
2569 wmav1_encoder_select="mdct sinewin wma_freqs"
2570 wmav2_decoder_select="mdct sinewin wma_freqs"
2571 wmav2_encoder_select="mdct sinewin wma_freqs"
2572 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2573 wmv1_decoder_select="h263_decoder"
2574 wmv1_encoder_select="h263_encoder"
2575 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2576 wmv2_encoder_select="h263_encoder wmv2dsp"
2577 wmv3_decoder_select="vc1_decoder"
2578 wmv3image_decoder_select="wmv3_decoder"
2579 xma1_decoder_select="wmapro_decoder"
2580 xma2_decoder_select="wmapro_decoder"
2581 zerocodec_decoder_select="zlib"
2582 zlib_decoder_select="zlib"
2583 zlib_encoder_select="zlib"
2584 zmbv_decoder_select="zlib"
2585 zmbv_encoder_select="zlib"
2586
2587 # platform codecs
2588 audiotoolbox_deps="AudioToolbox_AudioToolbox_h"
2589 audiotoolbox_extralibs="-framework CoreFoundation -framework AudioToolbox -framework CoreMedia"
2590
2591 # hardware accelerators
2592 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2593 cuda_deps_any="dlopen LoadLibrary"
2594 cuvid_deps="cuda"
2595 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder ID3D11VideoContext"
2596 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2597 dxva2_extralibs="-luser32"
2598 dxva2_lib_deps="dxva2"
2599 vda_framework_deps="VideoDecodeAcceleration_VDADecoder_h blocks_extension"
2600 vda_framework_extralibs="-framework VideoDecodeAcceleration"
2601 vda_deps="vda_framework pthreads"
2602 vda_extralibs="-framework CoreFoundation -framework QuartzCore"
2603 videotoolbox_hwaccel_deps="videotoolbox pthreads"
2604 videotoolbox_hwaccel_extralibs="-framework QuartzCore"
2605 xvmc_deps="X11_extensions_XvMClib_h"
2606
2607 h263_vaapi_hwaccel_deps="vaapi"
2608 h263_vaapi_hwaccel_select="h263_decoder"
2609 h263_videotoolbox_hwaccel_deps="videotoolbox"
2610 h263_videotoolbox_hwaccel_select="h263_decoder"
2611 h264_cuvid_hwaccel_deps="cuda cuvid"
2612 h264_cuvid_hwaccel_select="h264_cuvid_decoder"
2613 h264_d3d11va_hwaccel_deps="d3d11va"
2614 h264_d3d11va_hwaccel_select="h264_decoder"
2615 h264_dxva2_hwaccel_deps="dxva2"
2616 h264_dxva2_hwaccel_select="h264_decoder"
2617 h264_mediacodec_hwaccel_deps="mediacodec"
2618 h264_mmal_hwaccel_deps="mmal"
2619 h264_qsv_hwaccel_deps="libmfx"
2620 h264_vaapi_hwaccel_deps="vaapi"
2621 h264_vaapi_hwaccel_select="h264_decoder"
2622 h264_vda_hwaccel_deps="vda"
2623 h264_vda_hwaccel_select="h264_decoder"
2624 h264_vda_old_hwaccel_deps="vda"
2625 h264_vda_old_hwaccel_select="h264_decoder"
2626 h264_vdpau_hwaccel_deps="vdpau"
2627 h264_vdpau_hwaccel_select="h264_decoder"
2628 h264_videotoolbox_hwaccel_deps="videotoolbox"
2629 h264_videotoolbox_hwaccel_select="h264_decoder"
2630 hevc_cuvid_hwaccel_deps="cuda cuvid"
2631 hevc_cuvid_hwaccel_select="hevc_cuvid_decoder"
2632 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2633 hevc_d3d11va_hwaccel_select="hevc_decoder"
2634 hevc_mediacodec_hwaccel_deps="mediacodec"
2635 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2636 hevc_dxva2_hwaccel_select="hevc_decoder"
2637 hevc_qsv_hwaccel_deps="libmfx"
2638 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2639 hevc_vaapi_hwaccel_select="hevc_decoder"
2640 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2641 hevc_vdpau_hwaccel_select="hevc_decoder"
2642 mjpeg_cuvid_hwaccel_deps="cuda cuvid"
2643 mjpeg_cuvid_hwaccel_select="mjpeg_cuvid_decoder"
2644 mpeg_xvmc_hwaccel_deps="xvmc"
2645 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2646 mpeg1_cuvid_hwaccel_deps="cuda cuvid"
2647 mpeg1_cuvid_hwaccel_select="mpeg1_cuvid_decoder"
2648 mpeg1_vdpau_hwaccel_deps="vdpau"
2649 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2650 mpeg1_videotoolbox_hwaccel_deps="videotoolbox"
2651 mpeg1_videotoolbox_hwaccel_select="mpeg1video_decoder"
2652 mpeg1_xvmc_hwaccel_deps="xvmc"
2653 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2654 mpeg2_cuvid_hwaccel_deps="cuda cuvid"
2655 mpeg2_cuvid_hwaccel_select="mpeg2_cuvid_decoder"
2656 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2657 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2658 mpeg2_dxva2_hwaccel_deps="dxva2"
2659 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2660 mpeg2_mediacodec_hwaccel_deps="mediacodec"
2661 mpeg2_mmal_hwaccel_deps="mmal"
2662 mpeg2_qsv_hwaccel_deps="libmfx"
2663 mpeg2_qsv_hwaccel_select="qsvdec_mpeg2"
2664 mpeg2_vaapi_hwaccel_deps="vaapi"
2665 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2666 mpeg2_vdpau_hwaccel_deps="vdpau"
2667 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2668 mpeg2_videotoolbox_hwaccel_deps="videotoolbox"
2669 mpeg2_videotoolbox_hwaccel_select="mpeg2video_decoder"
2670 mpeg2_xvmc_hwaccel_deps="xvmc"
2671 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2672 mpeg4_cuvid_hwaccel_deps="cuda cuvid"
2673 mpeg4_cuvid_hwaccel_select="mpeg4_cuvid_decoder"
2674 mpeg4_mediacodec_hwaccel_deps="mediacodec"
2675 mpeg4_mmal_hwaccel_deps="mmal"
2676 mpeg4_vaapi_hwaccel_deps="vaapi"
2677 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2678 mpeg4_vdpau_hwaccel_deps="vdpau"
2679 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2680 mpeg4_videotoolbox_hwaccel_deps="videotoolbox"
2681 mpeg4_videotoolbox_hwaccel_select="mpeg4_decoder"
2682 vc1_cuvid_hwaccel_deps="cuda cuvid"
2683 vc1_cuvid_hwaccel_select="vc1_cuvid_decoder"
2684 vc1_d3d11va_hwaccel_deps="d3d11va"
2685 vc1_d3d11va_hwaccel_select="vc1_decoder"
2686 vc1_dxva2_hwaccel_deps="dxva2"
2687 vc1_dxva2_hwaccel_select="vc1_decoder"
2688 vc1_mmal_hwaccel_deps="mmal"
2689 vc1_qsv_hwaccel_deps="libmfx"
2690 vc1_qsv_hwaccel_select="qsvdec_vc1"
2691 vc1_vaapi_hwaccel_deps="vaapi"
2692 vc1_vaapi_hwaccel_select="vc1_decoder"
2693 vc1_vdpau_hwaccel_deps="vdpau"
2694 vc1_vdpau_hwaccel_select="vc1_decoder"
2695 vp8_cuvid_hwaccel_deps="cuda cuvid"
2696 vp8_cuvid_hwaccel_select="vp8_cuvid_decoder"
2697 vp9_cuvid_hwaccel_deps="cuda cuvid"
2698 vp9_cuvid_hwaccel_select="vp9_cuvid_decoder"
2699 vp8_mediacodec_hwaccel_deps="mediacodec"
2700 vp8_qsv_hwaccel_deps="libmfx"
2701 vp9_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_VP9"
2702 vp9_d3d11va_hwaccel_select="vp9_decoder"
2703 vp9_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_VP9"
2704 vp9_dxva2_hwaccel_select="vp9_decoder"
2705 vp9_mediacodec_hwaccel_deps="mediacodec"
2706 vp9_vaapi_hwaccel_deps="vaapi VADecPictureParameterBufferVP9_bit_depth"
2707 vp9_vaapi_hwaccel_select="vp9_decoder"
2708 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2709 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2710 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2711 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2712
2713 # hardware-accelerated codecs
2714 omx_deps="dlopen pthreads"
2715 omx_extralibs='$ldl'
2716 omx_rpi_select="omx"
2717 qsvdec_select="qsv"
2718 qsvenc_select="qsv"
2719 vaapi_encode_deps="vaapi"
2720
2721 hwupload_cuda_filter_deps="cuda"
2722 scale_npp_filter_deps="cuda libnpp"
2723 scale_cuda_filter_deps="cuda_sdk"
2724
2725 nvenc_deps="cuda"
2726 nvenc_deps_any="dlopen LoadLibrary"
2727 nvenc_encoder_deps="nvenc"
2728
2729 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2730 h264_cuvid_decoder_deps="cuda cuvid"
2731 h264_cuvid_decoder_select="h264_mp4toannexb_bsf"
2732 h264_mediacodec_decoder_deps="mediacodec"
2733 h264_mediacodec_decoder_select="h264_mp4toannexb_bsf h264_parser"
2734 h264_mmal_decoder_deps="mmal"
2735 h264_nvenc_encoder_deps="nvenc"
2736 h264_omx_encoder_deps="omx"
2737 h264_qsv_decoder_deps="libmfx"
2738 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2739 h264_qsv_encoder_deps="libmfx"
2740 h264_qsv_encoder_select="qsvenc"
2741 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2742 h264_vaapi_encoder_select="vaapi_encode golomb"
2743 h264_vda_decoder_deps="vda"
2744 h264_vda_decoder_select="h264_decoder"
2745 h264_vdpau_decoder_deps="vdpau"
2746 h264_vdpau_decoder_select="h264_decoder"
2747 hevc_cuvid_decoder_deps="cuda cuvid"
2748 hevc_cuvid_decoder_select="hevc_mp4toannexb_bsf"
2749 hevc_mediacodec_decoder_deps="mediacodec"
2750 hevc_mediacodec_decoder_select="hevc_mp4toannexb_bsf hevc_parser"
2751 hevc_nvenc_encoder_deps="nvenc"
2752 hevc_qsv_decoder_deps="libmfx"
2753 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
2754 hevc_qsv_encoder_deps="libmfx"
2755 hevc_qsv_encoder_select="hevcparse qsvenc"
2756 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2757 hevc_vaapi_encoder_select="vaapi_encode golomb"
2758 mjpeg_cuvid_decoder_deps="cuda cuvid"
2759 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2760 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2761 mpeg1_cuvid_decoder_deps="cuda cuvid"
2762 mpeg1_vdpau_decoder_deps="vdpau"
2763 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2764 mpeg2_crystalhd_decoder_select="crystalhd"
2765 mpeg2_cuvid_decoder_deps="cuda cuvid"
2766 mpeg2_mmal_decoder_deps="mmal"
2767 mpeg2_mediacodec_decoder_deps="mediacodec"
2768 mpeg2_qsv_decoder_deps="libmfx"
2769 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel"
2770 mpeg2_qsv_encoder_deps="libmfx"
2771 mpeg2_qsv_encoder_select="qsvenc"
2772 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2773 mpeg2_vaapi_encoder_select="vaapi_encode"
2774 mpeg4_crystalhd_decoder_select="crystalhd"
2775 mpeg4_cuvid_decoder_deps="cuda cuvid"
2776 mpeg4_mediacodec_decoder_deps="mediacodec"
2777 mpeg4_mmal_decoder_deps="mmal"
2778 mpeg4_omx_encoder_deps="omx"
2779 mpeg4_vdpau_decoder_deps="vdpau"
2780 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2781 mpeg_vdpau_decoder_deps="vdpau"
2782 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2783 msmpeg4_crystalhd_decoder_select="crystalhd"
2784 nvenc_h264_encoder_select="h264_nvenc_encoder"
2785 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2786 vc1_crystalhd_decoder_select="crystalhd"
2787 vc1_cuvid_decoder_deps="cuda cuvid"
2788 vc1_mmal_decoder_deps="mmal"
2789 vc1_vdpau_decoder_deps="vdpau"
2790 vc1_vdpau_decoder_select="vc1_decoder"
2791 vp8_cuvid_decoder_deps="cuda cuvid"
2792 vp8_mediacodec_decoder_deps="mediacodec"
2793 vp8_qsv_decoder_deps="libmfx"
2794 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2795 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2796 vp8_vaapi_encoder_select="vaapi_encode"
2797 vp9_cuvid_decoder_deps="cuda cuvid"
2798 vp9_mediacodec_decoder_deps="mediacodec"
2799 wmv3_crystalhd_decoder_select="crystalhd"
2800 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2801
2802 # parsers
2803 h264_parser_select="golomb h264dsp h264parse"
2804 hevc_parser_select="hevcparse"
2805 mpegaudio_parser_select="mpegaudioheader"
2806 mpegvideo_parser_select="mpegvideo"
2807 mpeg4video_parser_select="h263dsp mpegvideo qpeldsp"
2808 vc1_parser_select="vc1dsp"
2809
2810 # bitstream_filters
2811 mjpeg2jpeg_bsf_select="jpegtables"
2812
2813 # external libraries
2814 aac_at_decoder_deps="audiotoolbox"
2815 ac3_at_decoder_deps="audiotoolbox"
2816 ac3_at_decoder_select="ac3_parser"
2817 adpcm_ima_qt_at_decoder_deps="audiotoolbox"
2818 alac_at_decoder_deps="audiotoolbox"
2819 amr_nb_at_decoder_deps="audiotoolbox"
2820 avisynth_deps_any="dlopen LoadLibrary"
2821 avisynth_demuxer_deps="avisynth"
2822 avisynth_demuxer_select="riffdec"
2823 eac3_at_decoder_deps="audiotoolbox"
2824 eac3_at_decoder_select="ac3_parser"
2825 gsm_ms_at_decoder_deps="audiotoolbox"
2826 ilbc_at_decoder_deps="audiotoolbox"
2827 mp1_at_decoder_deps="audiotoolbox"
2828 mp2_at_decoder_deps="audiotoolbox"
2829 mp3_at_decoder_deps="audiotoolbox"
2830 mp1_at_decoder_select="mpegaudioheader"
2831 mp2_at_decoder_select="mpegaudioheader"
2832 mp3_at_decoder_select="mpegaudioheader"
2833 pcm_alaw_at_decoder_deps="audiotoolbox"
2834 pcm_mulaw_at_decoder_deps="audiotoolbox"
2835 qdmc_at_decoder_deps="audiotoolbox"
2836 qdm2_at_decoder_deps="audiotoolbox"
2837 aac_at_encoder_deps="audiotoolbox"
2838 aac_at_encoder_select="audio_frame_queue"
2839 alac_at_encoder_deps="audiotoolbox"
2840 alac_at_encoder_select="audio_frame_queue"
2841 ilbc_at_encoder_deps="audiotoolbox"
2842 ilbc_at_encoder_select="audio_frame_queue"
2843 pcm_alaw_at_encoder_deps="audiotoolbox"
2844 pcm_alaw_at_encoder_select="audio_frame_queue"
2845 pcm_mulaw_at_encoder_deps="audiotoolbox"
2846 pcm_mulaw_at_encoder_select="audio_frame_queue"
2847 chromaprint_muxer_deps="chromaprint"
2848 h264_videotoolbox_encoder_deps="videotoolbox_encoder pthreads"
2849 libcelt_decoder_deps="libcelt"
2850 libfdk_aac_decoder_deps="libfdk_aac"
2851 libfdk_aac_encoder_deps="libfdk_aac"
2852 libfdk_aac_encoder_select="audio_frame_queue"
2853 libgme_demuxer_deps="libgme"
2854 libgsm_decoder_deps="libgsm"
2855 libgsm_encoder_deps="libgsm"
2856 libgsm_ms_decoder_deps="libgsm"
2857 libgsm_ms_encoder_deps="libgsm"
2858 libilbc_decoder_deps="libilbc"
2859 libilbc_encoder_deps="libilbc"
2860 libkvazaar_encoder_deps="libkvazaar"
2861 libmodplug_demuxer_deps="libmodplug"
2862 libmp3lame_encoder_deps="libmp3lame"
2863 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2864 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2865 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2866 libopencore_amrnb_encoder_select="audio_frame_queue"
2867 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2868 libopenh264_decoder_deps="libopenh264"
2869 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2870 libopenh264_encoder_deps="libopenh264"
2871 libopenjpeg_decoder_deps="libopenjpeg"
2872 libopenjpeg_encoder_deps="libopenjpeg"
2873 libopenmpt_demuxer_deps="libopenmpt"
2874 libopus_decoder_deps="libopus"
2875 libopus_encoder_deps="libopus"
2876 libopus_encoder_select="audio_frame_queue"
2877 librsvg_decoder_deps="librsvg"
2878 libshine_encoder_deps="libshine"
2879 libshine_encoder_select="audio_frame_queue"
2880 libspeex_decoder_deps="libspeex"
2881 libspeex_encoder_deps="libspeex"
2882 libspeex_encoder_select="audio_frame_queue"
2883 libtheora_encoder_deps="libtheora"
2884 libtwolame_encoder_deps="libtwolame"
2885 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2886 libvorbis_decoder_deps="libvorbis"
2887 libvorbis_encoder_deps="libvorbis"
2888 libvorbis_encoder_select="audio_frame_queue"
2889 libvpx_vp8_decoder_deps="libvpx"
2890 libvpx_vp8_encoder_deps="libvpx"
2891 libvpx_vp9_decoder_deps="libvpx"
2892 libvpx_vp9_encoder_deps="libvpx"
2893 libwavpack_encoder_deps="libwavpack"
2894 libwavpack_encoder_select="audio_frame_queue"
2895 libwebp_encoder_deps="libwebp"
2896 libwebp_anim_encoder_deps="libwebp"
2897 libx262_encoder_deps="libx262"
2898 libx264_encoder_deps="libx264"
2899 libx264rgb_encoder_deps="libx264 x264_csp_bgr"
2900 libx264rgb_encoder_select="libx264_encoder"
2901 libx265_encoder_deps="libx265"
2902 libxavs_encoder_deps="libxavs"
2903 libxvid_encoder_deps="libxvid"
2904 libzvbi_teletext_decoder_deps="libzvbi"
2905 videotoolbox_deps="VideoToolbox_VideoToolbox_h"
2906 videotoolbox_extralibs="-framework CoreFoundation -framework VideoToolbox -framework CoreMedia -framework CoreVideo"
2907 videotoolbox_encoder_deps="videotoolbox VTCompressionSessionPrepareToEncodeFrames"
2908 videotoolbox_encoder_suggest="vda_framework vt_bt2020"
2909 vt_bt2020_deps="kCVImageBufferColorPrimaries_ITU_R_2020"
2910
2911 # demuxers / muxers
2912 ac3_demuxer_select="ac3_parser"
2913 aiff_muxer_select="iso_media"
2914 asf_demuxer_select="riffdec"
2915 asf_o_demuxer_select="riffdec"
2916 asf_muxer_select="riffenc"
2917 asf_stream_muxer_select="asf_muxer"
2918 avi_demuxer_select="iso_media riffdec exif"
2919 avi_muxer_select="riffenc"
2920 caf_demuxer_select="iso_media riffdec"
2921 caf_muxer_select="iso_media"
2922 dash_muxer_select="mp4_muxer"
2923 dirac_demuxer_select="dirac_parser"
2924 dts_demuxer_select="dca_parser"
2925 dtshd_demuxer_select="dca_parser"
2926 dv_demuxer_select="dvprofile"
2927 dv_muxer_select="dvprofile"
2928 dxa_demuxer_select="riffdec"
2929 eac3_demuxer_select="ac3_parser"
2930 f4v_muxer_select="mov_muxer"
2931 fifo_muxer_deps="threads"
2932 flac_demuxer_select="flac_parser"
2933 hds_muxer_select="flv_muxer"
2934 hls_muxer_select="mpegts_muxer"
2935 image2_alias_pix_demuxer_select="image2_demuxer"
2936 image2_brender_pix_demuxer_select="image2_demuxer"
2937 ipod_muxer_select="mov_muxer"
2938 ismv_muxer_select="mov_muxer"
2939 matroska_audio_muxer_select="matroska_muxer"
2940 matroska_demuxer_select="iso_media riffdec"
2941 matroska_demuxer_suggest="bzlib lzo zlib"
2942 matroska_muxer_select="iso_media riffenc"
2943 mmf_muxer_select="riffenc"
2944 mov_demuxer_select="iso_media riffdec"
2945 mov_demuxer_suggest="zlib"
2946 mov_muxer_select="iso_media riffenc rtpenc_chain"
2947 mp3_demuxer_select="mpegaudio_parser"
2948 mp3_muxer_select="mpegaudioheader"
2949 mp4_muxer_select="mov_muxer"
2950 mpegts_demuxer_select="iso_media"
2951 mpegts_muxer_select="adts_muxer latm_muxer"
2952 mpegtsraw_demuxer_select="mpegts_demuxer"
2953 mxf_d10_muxer_select="mxf_muxer"
2954 mxf_opatom_muxer_select="mxf_muxer"
2955 nut_muxer_select="riffenc"
2956 nuv_demuxer_select="riffdec"
2957 oga_muxer_select="ogg_muxer"
2958 ogg_demuxer_select="dirac_parse"
2959 ogv_muxer_select="ogg_muxer"
2960 opus_muxer_select="ogg_muxer"
2961 psp_muxer_select="mov_muxer"
2962 rtp_demuxer_select="sdp_demuxer"
2963 rtp_muxer_select="golomb"
2964 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2965 rtsp_demuxer_select="http_protocol rtpdec"
2966 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2967 sap_demuxer_select="sdp_demuxer"
2968 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2969 sdp_demuxer_select="rtpdec"
2970 smoothstreaming_muxer_select="ismv_muxer"
2971 spdif_muxer_select="aac_parser"
2972 spx_muxer_select="ogg_muxer"
2973 swf_demuxer_suggest="zlib"
2974 tak_demuxer_select="tak_parser"
2975 tg2_muxer_select="mov_muxer"
2976 tgp_muxer_select="mov_muxer"
2977 vobsub_demuxer_select="mpegps_demuxer"
2978 w64_demuxer_select="wav_demuxer"
2979 w64_muxer_select="wav_muxer"
2980 wav_demuxer_select="riffdec"
2981 wav_muxer_select="riffenc"
2982 webm_muxer_select="iso_media riffenc"
2983 webm_dash_manifest_demuxer_select="matroska_demuxer"
2984 wtv_demuxer_select="mpegts_demuxer riffdec"
2985 wtv_muxer_select="mpegts_muxer riffenc"
2986 xmv_demuxer_select="riffdec"
2987 xwma_demuxer_select="riffdec"
2988
2989 # indevs / outdevs
2990 alsa_indev_deps="alsa"
2991 alsa_outdev_deps="alsa"
2992 avfoundation_indev_deps="pthreads"
2993 avfoundation_indev_extralibs="-framework Foundation -framework AVFoundation -framework CoreVideo -framework CoreMedia"
2994 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2995 caca_outdev_deps="libcaca"
2996 decklink_indev_deps="decklink threads"
2997 decklink_indev_extralibs="-lstdc++"
2998 decklink_outdev_deps="decklink threads"
2999 decklink_outdev_extralibs="-lstdc++"
3000 dshow_indev_deps="IBaseFilter"
3001 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid -loleaut32 -lshlwapi"
3002 dv1394_indev_deps="dv1394"
3003 dv1394_indev_select="dv_demuxer"
3004 fbdev_indev_deps="linux_fb_h"
3005 fbdev_outdev_deps="linux_fb_h"
3006 gdigrab_indev_deps="CreateDIBSection"
3007 gdigrab_indev_extralibs="-lgdi32"
3008 gdigrab_indev_select="bmp_decoder"
3009 iec61883_indev_deps="libiec61883"
3010 jack_indev_deps="jack"
3011 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
3012 lavfi_indev_deps="avfilter"
3013 libcdio_indev_deps="libcdio"
3014 libdc1394_indev_deps="libdc1394"
3015 libv4l2_indev_deps="libv4l2"
3016 openal_indev_deps="openal"
3017 opengl_outdev_deps="opengl"
3018 oss_indev_deps_any="soundcard_h sys_soundcard_h"
3019 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
3020 pulse_indev_deps="libpulse"
3021 pulse_outdev_deps="libpulse"
3022 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
3023 qtkit_indev_select="qtkit"
3024 sdl2_outdev_deps="sdl2"
3025 sndio_indev_deps="sndio"
3026 sndio_outdev_deps="sndio"
3027 v4l_indev_deps="linux_videodev_h"
3028 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
3029 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
3030 vfwcap_indev_deps="vfw32 vfwcap_defines"
3031 xcbgrab_indev_deps="libxcb"
3032 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
3033 xv_outdev_extralibs="-lXv -lX11 -lXext"
3034
3035 # protocols
3036 async_protocol_deps="threads"
3037 bluray_protocol_deps="libbluray"
3038 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
3039 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
3040 ffrtmpcrypt_protocol_select="tcp_protocol"
3041 ffrtmphttp_protocol_deps="!librtmp_protocol"
3042 ffrtmphttp_protocol_select="http_protocol"
3043 ftp_protocol_select="tcp_protocol"
3044 gopher_protocol_select="network"
3045 http_protocol_select="tcp_protocol"
3046 httpproxy_protocol_select="tcp_protocol"
3047 https_protocol_select="tls_protocol"
3048 icecast_protocol_select="http_protocol"
3049 librtmp_protocol_deps="librtmp"
3050 librtmpe_protocol_deps="librtmp"
3051 librtmps_protocol_deps="librtmp"
3052 librtmpt_protocol_deps="librtmp"
3053 librtmpte_protocol_deps="librtmp"
3054 libsmbclient_protocol_deps="libsmbclient gplv3"
3055 libssh_protocol_deps="libssh"
3056 mmsh_protocol_select="http_protocol"
3057 mmst_protocol_select="network"
3058 rtmp_protocol_deps="!librtmp_protocol"
3059 rtmp_protocol_select="tcp_protocol"
3060 rtmpe_protocol_select="ffrtmpcrypt_protocol"
3061 rtmps_protocol_deps="!librtmp_protocol"
3062 rtmps_protocol_select="tls_protocol"
3063 rtmpt_protocol_select="ffrtmphttp_protocol"
3064 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
3065 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
3066 rtp_protocol_select="udp_protocol"
3067 sctp_protocol_deps="struct_sctp_event_subscribe struct_msghdr_msg_flags"
3068 sctp_protocol_select="network"
3069 srtp_protocol_select="rtp_protocol srtp"
3070 tcp_protocol_select="network"
3071 tls_gnutls_protocol_deps="gnutls !tls_schannel_protocol !tls_securetransport_protocol"
3072 tls_gnutls_protocol_select="tcp_protocol"
3073 tls_openssl_protocol_deps="openssl !tls_schannel_protocol !tls_securetransport_protocol !tls_gnutls_protocol"
3074 tls_openssl_protocol_select="tcp_protocol"
3075 tls_schannel_protocol_deps="schannel"
3076 tls_schannel_protocol_select="tcp_protocol"
3077 tls_securetransport_protocol_deps="securetransport"
3078 tls_securetransport_protocol_select="tcp_protocol"
3079 tls_protocol_deps_any="tls_schannel_protocol tls_securetransport_protocol tls_gnutls_protocol tls_openssl_protocol"
3080 udp_protocol_select="network"
3081 udplite_protocol_select="network"
3082 unix_protocol_deps="sys_un_h"
3083 unix_protocol_select="network"
3084
3085 # filters
3086 afftfilt_filter_deps="avcodec"
3087 afftfilt_filter_select="fft"
3088 afir_filter_deps="avcodec"
3089 afir_filter_select="fft"
3090 amovie_filter_deps="avcodec avformat"
3091 aresample_filter_deps="swresample"
3092 ass_filter_deps="libass"
3093 atempo_filter_deps="avcodec"
3094 atempo_filter_select="rdft"
3095 azmq_filter_deps="libzmq"
3096 blackframe_filter_deps="gpl"
3097 boxblur_filter_deps="gpl"
3098 bs2b_filter_deps="libbs2b"
3099 colormatrix_filter_deps="gpl"
3100 cover_rect_filter_deps="avcodec avformat gpl"
3101 cropdetect_filter_deps="gpl"
3102 deinterlace_qsv_filter_deps="libmfx"
3103 deinterlace_vaapi_filter_deps="vaapi"
3104 delogo_filter_deps="gpl"
3105 deshake_filter_select="pixelutils"
3106 drawtext_filter_deps="libfreetype"
3107 elbg_filter_deps="avcodec"
3108 eq_filter_deps="gpl"
3109 fftfilt_filter_deps="avcodec"
3110 fftfilt_filter_select="rdft"
3111 find_rect_filter_deps="avcodec avformat gpl"
3112 firequalizer_filter_deps="avcodec"
3113 firequalizer_filter_select="rdft"
3114 flite_filter_deps="libflite"
3115 framerate_filter_select="pixelutils"
3116 frei0r_filter_deps="frei0r dlopen"
3117 frei0r_src_filter_deps="frei0r dlopen"
3118 fspp_filter_deps="gpl"
3119 geq_filter_deps="gpl"
3120 histeq_filter_deps="gpl"
3121 hqdn3d_filter_deps="gpl"
3122 interlace_filter_deps="gpl"
3123 kerndeint_filter_deps="gpl"
3124 ladspa_filter_deps="ladspa dlopen"
3125 mcdeint_filter_deps="avcodec gpl"
3126 movie_filter_deps="avcodec avformat"
3127 mpdecimate_filter_deps="gpl"
3128 mpdecimate_filter_select="pixelutils"
3129 mptestsrc_filter_deps="gpl"
3130 negate_filter_deps="lut_filter"
3131 nnedi_filter_deps="gpl"
3132 ocr_filter_deps="libtesseract"
3133 ocv_filter_deps="libopencv"
3134 owdenoise_filter_deps="gpl"
3135 pan_filter_deps="swresample"
3136 perspective_filter_deps="gpl"
3137 phase_filter_deps="gpl"
3138 pp7_filter_deps="gpl"
3139 pp_filter_deps="gpl postproc"
3140 pullup_filter_deps="gpl"
3141 removelogo_filter_deps="avcodec avformat swscale"
3142 repeatfields_filter_deps="gpl"
3143 resample_filter_deps="avresample"
3144 rubberband_filter_deps="librubberband"
3145 sab_filter_deps="gpl swscale"
3146 scale2ref_filter_deps="swscale"
3147 scale_filter_deps="swscale"
3148 scale_qsv_filter_deps="libmfx"
3149 select_filter_select="pixelutils"
3150 showcqt_filter_deps="avcodec avformat swscale"
3151 showcqt_filter_select="fft"
3152 showfreqs_filter_deps="avcodec"
3153 showfreqs_filter_select="fft"
3154 showspectrum_filter_deps="avcodec"
3155 showspectrum_filter_select="fft"
3156 showspectrumpic_filter_deps="avcodec"
3157 showspectrumpic_filter_select="fft"
3158 signature_filter_deps="gpl avcodec avformat"
3159 smartblur_filter_deps="gpl swscale"
3160 sofalizer_filter_deps="libmysofa avcodec"
3161 sofalizer_filter_select="fft"
3162 spectrumsynth_filter_deps="avcodec"
3163 spectrumsynth_filter_select="fft"
3164 spp_filter_deps="gpl avcodec"
3165 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
3166 stereo3d_filter_deps="gpl"
3167 subtitles_filter_deps="avformat avcodec libass"
3168 super2xsai_filter_deps="gpl"
3169 pixfmts_super2xsai_test_deps="super2xsai_filter"
3170 tinterlace_filter_deps="gpl"
3171 tinterlace_merge_test_deps="tinterlace_filter"
3172 tinterlace_pad_test_deps="tinterlace_filter"
3173 uspp_filter_deps="gpl avcodec"
3174 vaguedenoiser_filter_deps="gpl"
3175 vidstabdetect_filter_deps="libvidstab"
3176 vidstabtransform_filter_deps="libvidstab"
3177 zmq_filter_deps="libzmq"
3178 zoompan_filter_deps="swscale"
3179 zscale_filter_deps="libzimg"
3180 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
3181
3182 # examples
3183 avio_dir_cmd_deps="avformat avutil"
3184 avio_reading_deps="avformat avcodec avutil"
3185 decode_audio_example_deps="avcodec avutil"
3186 decode_video_example_deps="avcodec avutil"
3187 demuxing_decoding_example_deps="avcodec avformat avutil"
3188 encode_audio_example_deps="avcodec avutil"
3189 encode_video_example_deps="avcodec avutil"
3190 extract_mvs_example_deps="avcodec avformat avutil"
3191 filter_audio_example_deps="avfilter avutil"
3192 filtering_audio_example_deps="avfilter avcodec avformat avutil"
3193 filtering_video_example_deps="avfilter avcodec avformat avutil"
3194 http_multiclient_example_deps="avformat avutil fork"
3195 metadata_example_deps="avformat avutil"
3196 muxing_example_deps="avcodec avformat avutil swscale"
3197 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
3198 remuxing_example_deps="avcodec avformat avutil"
3199 resampling_audio_example_deps="avutil swresample"
3200 scaling_video_example_deps="avutil swscale"
3201 transcode_aac_example_deps="avcodec avformat swresample"
3202 transcoding_example_deps="avfilter avcodec avformat avutil"
3203
3204 # libraries, in linking order
3205 avcodec_deps="avutil"
3206 avcodec_select="null_bsf"
3207 avdevice_deps="avformat avcodec avutil"
3208 avfilter_deps="avutil"
3209 avformat_deps="avcodec avutil"
3210 avresample_deps="avutil"
3211 postproc_deps="avutil gpl"
3212 swresample_deps="avutil"
3213 swscale_deps="avutil"
3214
3215 # programs
3216 ffmpeg_deps="avcodec avfilter avformat swresample"
3217 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
3218                null_filter
3219                trim_filter"
3220 ffplay_deps="avcodec avformat swscale swresample sdl2"
3221 ffplay_extralibs='$sdl2_extralibs'
3222 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
3223 ffprobe_deps="avcodec avformat"
3224 ffserver_deps="avformat fork sarestart"
3225 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
3226
3227 # documentation
3228 podpages_deps="perl"
3229 manpages_deps="perl pod2man"
3230 htmlpages_deps="perl"
3231 htmlpages_deps_any="makeinfo_html texi2html"
3232 txtpages_deps="perl makeinfo"
3233 doc_deps_any="manpages htmlpages podpages txtpages"
3234
3235 # default parameters
3236
3237 logfile="ffbuild/config.log"
3238
3239 # installation paths
3240 prefix_default="/usr/local"
3241 bindir_default='${prefix}/bin'
3242 datadir_default='${prefix}/share/ffmpeg'
3243 docdir_default='${prefix}/share/doc/ffmpeg'
3244 incdir_default='${prefix}/include'
3245 libdir_default='${prefix}/lib'
3246 mandir_default='${prefix}/share/man'
3247
3248 # toolchain
3249 ar_default="ar"
3250 cc_default="gcc"
3251 cxx_default="g++"
3252 host_cc_default="gcc"
3253 doxygen_default="doxygen"
3254 install="install"
3255 ln_s_default="ln -s -f"
3256 nm_default="nm -g"
3257 pkg_config_default=pkg-config
3258 ranlib_default="ranlib"
3259 strip_default="strip"
3260 version_script='--version-script'
3261 x86asmexe_default="nasm"
3262 windres_default="windres"
3263 nvcc_default="nvcc"
3264 nvccflags_default="-gencode arch=compute_30,code=sm_30 -O2"
3265
3266 # OS
3267 target_os_default=$(tolower $(uname -s))
3268 host_os=$target_os_default
3269
3270 # machine
3271 if test "$target_os_default" = aix; then
3272     arch_default=$(uname -p)
3273     strip_default="strip -X32_64"
3274 else
3275     arch_default=$(uname -m)
3276 fi
3277 cpu="generic"
3278 intrinsics="none"
3279
3280 # configurable options
3281 enable $PROGRAM_LIST
3282 enable $DOCUMENT_LIST
3283 enable $EXAMPLE_LIST
3284 enable $(filter_out avresample $LIBRARY_LIST)
3285 enable stripping
3286
3287 enable asm
3288 enable debug
3289 enable doc
3290 enable faan faandct faanidct
3291 enable optimizations
3292 enable runtime_cpudetect
3293 enable safe_bitstream_reader
3294 enable static
3295 enable swscale_alpha
3296 enable valgrind_backtrace
3297
3298 sws_max_filter_size_default=256
3299 set_default sws_max_filter_size
3300
3301 # build settings
3302 SHFLAGS='-shared -Wl,-soname,$$(@F)'
3303 LIBPREF="lib"
3304 LIBSUF=".a"
3305 FULLNAME='$(NAME)$(BUILDSUF)'
3306 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
3307 SLIBPREF="lib"
3308 SLIBSUF=".so"
3309 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
3310 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
3311 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
3312 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
3313 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
3314 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
3315 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
3316
3317 asflags_filter=echo
3318 cflags_filter=echo
3319 ldflags_filter=echo
3320
3321 AS_C='-c'
3322 AS_O='-o $@'
3323 CC_C='-c'
3324 CC_E='-E -o $@'
3325 CC_O='-o $@'
3326 CXX_C='-c'
3327 CXX_O='-o $@'
3328 OBJCC_C='-c'
3329 OBJCC_E='-E -o $@'
3330 OBJCC_O='-o $@'
3331 X86ASM_O='-o $@'
3332 LD_O='-o $@'
3333 LD_LIB='-l%'
3334 LD_PATH='-L'
3335 HOSTCC_C='-c'
3336 HOSTCC_E='-E -o $@'
3337 HOSTCC_O='-o $@'
3338 HOSTLD_O='-o $@'
3339 NVCC_C='-c'
3340 NVCC_O='-o $@'
3341
3342 host_extralibs='-lm'
3343 host_cflags_filter=echo
3344 host_ldflags_filter=echo
3345
3346 target_path='$(CURDIR)'
3347
3348 # since the object filename is not given with the -MM flag, the compiler
3349 # is only able to print the basename, and we must add the path ourselves
3350 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>/dev/null | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(@F),$(@D)/$(@F)," > $(@:.o=.d)'
3351 DEPFLAGS='-MM'
3352
3353 mkdir -p ffbuild
3354
3355 # find source path
3356 if test -f configure; then
3357     source_path=.
3358 else
3359     source_path=$(cd $(dirname "$0"); pwd)
3360     case "$source_path" in
3361         *[[:blank:]]*) die "Out of tree builds are impossible with whitespace in source path." ;;
3362     esac
3363     test -e "$source_path/config.h" &&
3364         die "Out of tree builds are impossible with config.h in source dir."
3365 fi
3366
3367 for v in "$@"; do
3368     r=${v#*=}
3369     l=${v%"$r"}
3370     r=$(sh_quote "$r")
3371     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
3372 done
3373
3374 find_things(){
3375     thing=$1
3376     pattern=$2
3377     file=$source_path/$3
3378     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
3379 }
3380
3381 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
3382 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
3383 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
3384 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
3385 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
3386 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
3387 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
3388 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
3389 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
3390
3391 find_things_extern(){
3392     thing=$1
3393     pattern=$2
3394     file=$source_path/$3
3395     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
3396 }
3397
3398 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
3399 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
3400
3401 ALL_COMPONENTS="
3402     $BSF_LIST
3403     $DECODER_LIST
3404     $DEMUXER_LIST
3405     $ENCODER_LIST
3406     $FILTER_LIST
3407     $HWACCEL_LIST
3408     $INDEV_LIST
3409     $MUXER_LIST
3410     $OUTDEV_LIST
3411     $PARSER_LIST
3412     $PROTOCOL_LIST
3413 "
3414
3415 for n in $COMPONENT_LIST; do
3416     v=$(toupper ${n%s})_LIST
3417     eval enable \$$v
3418     eval ${n}_if_any="\$$v"
3419 done
3420
3421 enable $ARCH_EXT_LIST
3422
3423 die_unknown(){
3424     echo "Unknown option \"$1\"."
3425     echo "See $0 --help for available options."
3426     exit 1
3427 }
3428
3429 print_in_columns() {
3430     cols=$(expr $ncols / 24)
3431     cat | tr ' ' '\n' | sort | pr -r "-$cols" -w $ncols -t
3432 }
3433
3434 show_list() {
3435     suffix=_$1
3436     shift
3437     echo $* | sed s/$suffix//g | print_in_columns
3438     exit 0
3439 }
3440
3441 rand_list(){
3442     IFS=', '
3443     set -- $*
3444     unset IFS
3445     for thing; do
3446         comp=${thing%:*}
3447         prob=${thing#$comp}
3448         prob=${prob#:}
3449         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
3450         echo "prob ${prob:-0.5}"
3451         printf '%s\n' $comp
3452     done
3453 }
3454
3455 do_random(){
3456     action=$1
3457     shift
3458     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
3459     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
3460 }
3461
3462 for opt do
3463     optval="${opt#*=}"
3464     case "$opt" in
3465         --extra-ldflags=*)
3466             add_ldflags $optval
3467         ;;
3468         --extra-ldexeflags=*)
3469             add_ldexeflags $optval
3470         ;;
3471         --extra-ldlibflags=*)
3472             add_ldlibflags $optval
3473         ;;
3474         --extra-libs=*)
3475             add_extralibs $optval
3476         ;;
3477         --disable-devices)
3478             disable $INDEV_LIST $OUTDEV_LIST
3479         ;;
3480         --enable-debug=*)
3481             debuglevel="$optval"
3482         ;;
3483         --disable-programs)
3484             disable $PROGRAM_LIST
3485         ;;
3486         --disable-everything)
3487             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3488         ;;
3489         --disable-all)
3490             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
3491             disable $LIBRARY_LIST $PROGRAM_LIST doc
3492             enable avutil
3493         ;;
3494         --enable-random|--disable-random)
3495             action=${opt%%-random}
3496             do_random ${action#--} $COMPONENT_LIST
3497         ;;
3498         --enable-random=*|--disable-random=*)
3499             action=${opt%%-random=*}
3500             do_random ${action#--} $optval
3501         ;;
3502         --enable-*=*|--disable-*=*)
3503             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
3504             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
3505             eval list=\$$(toupper $thing)_LIST
3506             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
3507             list=$(filter "$name" $list)
3508             [ "$list" = "" ] && warn "Option $opt did not match anything"
3509             $action $list
3510         ;;
3511         --enable-yasm|--disable-yasm)
3512             warn "The ${opt} option is only provided for compatibility and will be\n"\
3513                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
3514             test $opt = --enable-yasm && x86asm=yes || x86asm=no
3515         ;;
3516         --yasmexe=*)
3517             warn "The --yasmexe option is only provided for compatibility and will be\n"\
3518                  "removed in the future. Use --x86asmexe instead."
3519             x86asmexe="$optval"
3520         ;;
3521         --enable-?*|--disable-?*)
3522             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
3523             if is_in $option $COMPONENT_LIST; then
3524                 test $action = disable && action=unset
3525                 eval $action \$$(toupper ${option%s})_LIST
3526             elif is_in $option $CMDLINE_SELECT; then
3527                 $action $option
3528             else
3529                 die_unknown $opt
3530             fi
3531         ;;
3532         --list-*)
3533             NAME="${opt#--list-}"
3534             is_in $NAME $COMPONENT_LIST || die_unknown $opt
3535             NAME=${NAME%s}
3536             eval show_list $NAME \$$(toupper $NAME)_LIST
3537         ;;
3538         --help|-h) show_help
3539         ;;
3540         --quiet|-q) quiet=yes
3541         ;;
3542         --fatal-warnings) enable fatal_warnings
3543         ;;
3544         --libfuzzer=*)
3545             libfuzzer_path="$optval"
3546         ;;
3547         *)
3548             optname="${opt%%=*}"
3549             optname="${optname#--}"
3550             optname=$(echo "$optname" | sed 's/-/_/g')
3551             if is_in $optname $CMDLINE_SET; then
3552                 eval $optname='$optval'
3553             elif is_in $optname $CMDLINE_APPEND; then
3554                 append $optname "$optval"
3555             else
3556                 die_unknown $opt
3557             fi
3558         ;;
3559     esac
3560 done
3561
3562 for e in $env; do
3563     eval "export $e"
3564 done
3565
3566 # Mark specifically enabled, but normally autodetected libraries as requested.
3567 for lib in $AUTODETECT_LIBS; do
3568     enabled $lib && request $lib
3569 done
3570
3571 # Enable platform codecs by default.
3572 enable_weak audiotoolbox
3573
3574 # Enable hwaccels by default.
3575 enable_weak d3d11va dxva2 vaapi vda vdpau videotoolbox_hwaccel xvmc
3576 enable_weak xlib
3577
3578 enable_weak cuda cuvid nvenc vda_framework videotoolbox videotoolbox_encoder
3579
3580 disabled logging && logfile=/dev/null
3581
3582 die_license_disabled() {
3583     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
3584 }
3585
3586 die_license_disabled_gpl() {
3587     enabled $1 || { enabled $v && die "$v is incompatible with the gpl and --enable-$1 is not specified."; }
3588 }
3589
3590 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3591 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST $EXTERNAL_LIBRARY_GPLV3_LIST
3592
3593 enabled gpl && map "die_license_disabled_gpl nonfree" $EXTERNAL_LIBRARY_NONFREE_LIST
3594 map "die_license_disabled nonfree" $HWACCEL_LIBRARY_NONFREE_LIST
3595
3596 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3597
3598 # Disable all the library-specific components if the library itself
3599 # is disabled, see AVCODEC_LIST and following _LIST variables.
3600
3601 disable_components(){
3602     disabled ${1} && disable $(
3603         eval components="\$$(toupper ${1})_COMPONENTS"
3604         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
3605     )
3606 }
3607
3608 map 'disable_components $v' $LIBRARY_LIST
3609
3610 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
3611 set >> $logfile
3612
3613 test -n "$valgrind" && toolchain="valgrind-memcheck"
3614
3615 enabled ossfuzz && {
3616     add_cflags  -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp -fno-omit-frame-pointer
3617     add_ldflags -fsanitize=address,undefined -fsanitize-coverage=trace-pc-guard,trace-cmp
3618 }
3619
3620 case "$toolchain" in
3621     *-asan)
3622         cc_default="${toolchain%-asan}"
3623         add_cflags  -fsanitize=address
3624         add_ldflags -fsanitize=address
3625     ;;
3626     *-msan)
3627         cc_default="${toolchain%-msan}"
3628         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
3629         add_ldflags -fsanitize=memory
3630     ;;
3631     *-tsan)
3632         cc_default="${toolchain%-tsan}"
3633         add_cflags  -fsanitize=thread -fPIE
3634         add_ldflags -fsanitize=thread -pie
3635         case "$toolchain" in
3636             gcc-tsan)
3637                 add_cflags  -fPIC
3638                 add_ldflags -fPIC
3639                 ;;
3640         esac
3641     ;;
3642     *-usan)
3643         cc_default="${toolchain%-usan}"
3644         add_cflags  -fsanitize=undefined
3645         add_ldflags -fsanitize=undefined
3646     ;;
3647     valgrind-*)
3648         target_exec_default="valgrind"
3649         case "$toolchain" in
3650             valgrind-massif)
3651                 target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
3652                 ;;
3653             valgrind-memcheck)
3654                 target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3655                 ;;
3656         esac
3657     ;;
3658     msvc)
3659         # Check whether the current MSVC version needs the C99 converter.
3660         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3661         # support enough of C99 to build ffmpeg. Default to the new
3662         # behaviour if the regexp was unable to match anything, since this
3663         # successfully parses the version number of existing supported
3664         # versions that require the converter (MSVC 2010 and 2012).
3665         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3666         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3667             cc_default="cl"
3668             cxx_default="cl"
3669         else
3670             cc_default="c99wrap cl"
3671             cxx_default="c99wrap cl"
3672         fi
3673         ld_default="$source_path/compat/windows/mslink"
3674         nm_default="dumpbin -symbols"
3675         ar_default="lib"
3676         case "$arch" in
3677         arm*)
3678             as_default="armasm"
3679             ;;
3680         esac
3681         target_os_default="win32"
3682         # Use a relative path for TMPDIR. This makes sure all the
3683         # ffconf temp files are written with a relative path, avoiding
3684         # issues with msys/win32 path conversion for MSVC parameters
3685         # such as -Fo<file> or -out:<file>.
3686         TMPDIR=.
3687     ;;
3688     icl)
3689         cc_default="icl"
3690         ld_default="xilink"
3691         nm_default="dumpbin -symbols"
3692         ar_default="xilib"
3693         target_os_default="win32"
3694         TMPDIR=.
3695     ;;
3696     gcov)
3697         add_cflags  -fprofile-arcs -ftest-coverage
3698         add_ldflags -fprofile-arcs -ftest-coverage
3699     ;;
3700     llvm-cov)
3701         add_cflags -fprofile-arcs -ftest-coverage
3702         add_ldflags --coverage
3703     ;;
3704     hardened)
3705         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3706         add_cflags   -fno-strict-overflow -fstack-protector-all
3707         add_ldflags  -Wl,-z,relro -Wl,-z,now
3708         add_cflags   -fPIE
3709         add_ldexeflags -fPIE -pie
3710     ;;
3711     ?*)
3712         die "Unknown toolchain $toolchain"
3713     ;;
3714 esac
3715
3716 test -n "$cross_prefix" && enable cross_compile
3717
3718 if enabled cross_compile; then
3719     test -n "$arch" && test -n "$target_os" ||
3720         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3721 fi
3722
3723 ar_default="${cross_prefix}${ar_default}"
3724 cc_default="${cross_prefix}${cc_default}"
3725 cxx_default="${cross_prefix}${cxx_default}"
3726 nm_default="${cross_prefix}${nm_default}"
3727 pkg_config_default="${cross_prefix}${pkg_config_default}"
3728 if ${cross_prefix}${ranlib_default} 2>&1 | grep -q "\-D "; then
3729     ranlib_default="${cross_prefix}${ranlib_default} -D"
3730 else
3731     ranlib_default="${cross_prefix}${ranlib_default}"
3732 fi
3733 strip_default="${cross_prefix}${strip_default}"
3734 windres_default="${cross_prefix}${windres_default}"
3735
3736 sysinclude_default="${sysroot}/usr/include"
3737
3738 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3739     target_exec target_os x86asmexe nvcc
3740 enabled cross_compile || host_cc_default=$cc
3741 set_default host_cc
3742
3743 pkg_config_fail_message=""
3744 if ! $pkg_config --version >/dev/null 2>&1; then
3745     warn "$pkg_config not found, library detection may fail."
3746     pkg_config=false
3747 elif is_in -static $cc $LDFLAGS && ! is_in --static $pkg_config $pkg_config_flags; then
3748     pkg_config_fail_message="
3749 Note: When building a static binary, add --pkg-config-flags=\"--static\"."
3750 fi
3751
3752 if test $doxygen != $doxygen_default && \
3753   ! $doxygen --version >/dev/null 2>&1; then
3754     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3755 fi
3756
3757 exesuf() {
3758     case $1 in
3759         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3760     esac
3761 }
3762
3763 EXESUF=$(exesuf $target_os)
3764 HOSTEXESUF=$(exesuf $host_os)
3765
3766 # set temporary file name
3767 : ${TMPDIR:=$TEMPDIR}
3768 : ${TMPDIR:=$TMP}
3769 : ${TMPDIR:=/tmp}
3770
3771 if [ -n "$tempprefix" ] ; then
3772     mktemp(){
3773         tmpname="$tempprefix.${HOSTNAME}.${UID}"
3774         echo "$tmpname"
3775         mkdir "$tmpname"
3776     }
3777 elif ! check_cmd mktemp -u XXXXXX; then
3778     # simple replacement for missing mktemp
3779     # NOT SAFE FOR GENERAL USE
3780     mktemp(){
3781         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3782         echo "$tmpname"
3783         mkdir "$tmpname"
3784     }
3785 fi
3786
3787 FFTMPDIR=$(mktemp -d "${TMPDIR}/ffconf.XXXXXXXX" 2> /dev/null) ||
3788     die "Unable to create temporary directory in $TMPDIR."
3789
3790 tmpfile(){
3791     tmp="${FFTMPDIR}/test"$2
3792     (set -C; exec > $tmp) 2> /dev/null ||
3793         die "Unable to create temporary file in $FFTMPDIR."
3794     eval $1=$tmp
3795 }
3796
3797 trap 'rm -rf -- "$FFTMPDIR"' EXIT
3798 trap 'exit 2' INT
3799
3800 tmpfile TMPASM .asm
3801 tmpfile TMPC   .c
3802 tmpfile TMPCPP .cpp
3803 tmpfile TMPE   $EXESUF
3804 tmpfile TMPH   .h
3805 tmpfile TMPM   .m
3806 tmpfile TMPO   .o
3807 tmpfile TMPS   .S
3808 tmpfile TMPSH  .sh
3809 tmpfile TMPV   .ver
3810
3811 unset -f mktemp
3812
3813 chmod +x $TMPE
3814
3815 # make sure we can execute files in $TMPDIR
3816 cat > $TMPSH 2>> $logfile <<EOF
3817 #! /bin/sh
3818 EOF
3819 chmod +x $TMPSH >> $logfile 2>&1
3820 if ! $TMPSH >> $logfile 2>&1; then
3821     cat <<EOF
3822 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3823 variable to another directory and make sure that it is not mounted noexec.
3824 EOF
3825     die "Sanity test failed."
3826 fi
3827
3828 armasm_flags(){
3829     for flag; do
3830         case $flag in
3831             # Filter out MSVC cl.exe options from cflags that shouldn't
3832             # be passed to gas-preprocessor
3833             -M[TD]*)                                            ;;
3834             *)                  echo $flag                      ;;
3835         esac
3836    done
3837 }
3838
3839 ccc_flags(){
3840     for flag; do
3841         case $flag in
3842             -std=c99)           echo -c99                       ;;
3843             -mcpu=*)            echo -arch ${flag#*=}           ;;
3844             -mieee)             echo -ieee                      ;;
3845             -O*|-fast)          echo $flag                      ;;
3846             -fno-math-errno)    echo -assume nomath_errno       ;;
3847             -g)                 echo -g3                        ;;
3848             -Wall)              echo -msg_enable level2         ;;
3849             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3850             -Wl,*)              echo $flag                      ;;
3851             -f*|-W*)                                            ;;
3852             *)                  echo $flag                      ;;
3853         esac
3854    done
3855 }
3856
3857 cparser_flags(){
3858     for flag; do
3859         case $flag in
3860             -Wno-switch)             echo -Wno-switch-enum ;;
3861             -Wno-format-zero-length) ;;
3862             -Wdisabled-optimization) ;;
3863             -Wno-pointer-sign)       echo -Wno-other ;;
3864             *)                       echo $flag ;;
3865         esac
3866     done
3867 }
3868
3869 msvc_common_flags(){
3870     for flag; do
3871         case $flag in
3872             # In addition to specifying certain flags under the compiler
3873             # specific filters, they must be specified here as well or else the
3874             # generic catch all at the bottom will print the original flag.
3875             -Wall)                ;;
3876             -Wextra)              ;;
3877             -std=c99)             ;;
3878             # Common flags
3879             -fomit-frame-pointer) ;;
3880             -g)                   echo -Z7 ;;
3881             -fno-math-errno)      ;;
3882             -fno-common)          ;;
3883             -fno-signed-zeros)    ;;
3884             -fPIC)                ;;
3885             -mthumb)              ;;
3886             -march=*)             ;;
3887             -lz)                  echo zlib.lib ;;
3888             -lx264)               echo libx264.lib ;;
3889             -lstdc++)             ;;
3890             -l*)                  echo ${flag#-l}.lib ;;
3891             -LARGEADDRESSAWARE)   echo $flag ;;
3892             -L*)                  echo -libpath:${flag#-L} ;;
3893             *)                    echo $flag ;;
3894         esac
3895     done
3896 }
3897
3898 msvc_flags(){
3899     msvc_common_flags "$@"
3900     for flag; do
3901         case $flag in
3902             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
3903                                        -wd4554 ;;
3904             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3905                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3906                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3907                                        -wd4307 \
3908                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
3909         esac
3910     done
3911 }
3912
3913 icl_flags(){
3914     msvc_common_flags "$@"
3915     for flag; do
3916         case $flag in
3917             # Despite what Intel's documentation says -Wall, which is supported
3918             # on Windows, does enable remarks so disable them here.
3919             -Wall)                echo $flag -Qdiag-disable:remark ;;
3920             -std=c99)             echo -Qstd=c99 ;;
3921             -flto)                echo -ipo ;;
3922         esac
3923     done
3924 }
3925
3926 icc_flags(){
3927     for flag; do
3928         case $flag in
3929             -flto)                echo -ipo ;;
3930             *)                    echo $flag ;;
3931         esac
3932     done
3933 }
3934
3935 pgi_flags(){
3936     for flag; do
3937         case $flag in
3938             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3939             -fomit-frame-pointer) echo -Mnoframe ;;
3940             -g)                   echo -gopt ;;
3941             *)                    echo $flag ;;
3942         esac
3943     done
3944 }
3945
3946 suncc_flags(){
3947     for flag; do
3948         case $flag in
3949             -march=*|-mcpu=*)
3950                 case "${flag#*=}" in
3951                     native)                   echo -xtarget=native       ;;
3952                     v9|niagara)               echo -xarch=sparc          ;;
3953                     ultrasparc)               echo -xarch=sparcvis       ;;
3954                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3955                     i586|pentium)             echo -xchip=pentium        ;;
3956                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3957                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3958                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3959                     pentium4*)          echo -xtarget=pentium4           ;;
3960                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3961                     *-sse3)             echo -xarch=sse3                 ;;
3962                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3963                     bonnell)                   echo -xarch=ssse3         ;;
3964                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3965                     westmere)                  echo -xtarget=westmere    ;;
3966                     silvermont)                echo -xarch=sse4_2        ;;
3967                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3968                     core-avx*|ivybridge|haswell|broadwell|skylake*|knl)
3969                                                echo -xarch=avx           ;;
3970                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3971                     btver1)                    echo -xarch=amdsse4a      ;;
3972                     btver2|bdver*|znver*)      echo -xarch=avx           ;;
3973                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3974                     k8|opteron|athlon64|athlon-fx)
3975                                                echo -xarch=sse2a         ;;
3976                     athlon*)                   echo -xarch=pentium_proa  ;;
3977                 esac
3978                 ;;
3979             -std=c99)             echo -xc99              ;;
3980             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3981             -fPIC)                echo -KPIC -xcode=pic32 ;;
3982             -W*,*)                echo $flag              ;;
3983             -f*-*|-W*|-mimpure-text)                      ;;
3984             -shared)              echo -G                 ;;
3985             *)                    echo $flag              ;;
3986         esac
3987     done
3988 }
3989
3990 tms470_flags(){
3991     for flag; do
3992         case $flag in
3993             -march=*|-mcpu=*)
3994                 case "${flag#*=}" in
3995                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3996                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3997                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3998                     armv6*|arm11*)          echo -mv=6   ;;
3999                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
4000                                             echo -mv=5e  ;;
4001                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
4002                 esac
4003                 ;;
4004             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
4005             -mfpu=vfp)      echo --float_support=vfpv2        ;;
4006             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
4007             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
4008             -msoft-float)   echo --float_support=vfplib       ;;
4009             -O[0-3]|-mf=*)  echo $flag                        ;;
4010             -g)             echo -g -mn                       ;;
4011             -pds=*)         echo $flag                        ;;
4012             -D*|-I*)        echo $flag                        ;;
4013             --gcc|--abi=*)  echo $flag                        ;;
4014             -me)            echo $flag                        ;;
4015         esac
4016     done
4017 }
4018
4019 probe_cc(){
4020     pfx=$1
4021     _cc=$2
4022     first=$3
4023
4024     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
4025     unset _ld_o _ldflags _ld_lib _ld_path
4026     unset _depflags _DEPCMD _DEPFLAGS
4027     _flags_filter=echo
4028
4029     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
4030         true # no-op to avoid reading stdin in following checks
4031     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
4032         _type=llvm_gcc
4033         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
4034         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
4035         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4036         _cflags_speed='-O3'
4037         _cflags_size='-Os'
4038     elif $_cc -v 2>&1 | grep -qi ^gcc; then
4039         _type=gcc
4040         gcc_version=$($_cc --version | head -n1)
4041         gcc_basever=$($_cc -dumpversion)
4042         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
4043         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
4044         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
4045         case $gcc_basever in
4046             2) ;;
4047             2.*) ;;
4048             *) _depflags='-MMD -MF $(@:.o=.d) -MT $@' ;;
4049         esac
4050         if [ "$first" = true ]; then
4051             case $gcc_basever in
4052                 4.2*)
4053                 warn "gcc 4.2 is outdated and may miscompile FFmpeg. Please use a newer compiler." ;;
4054             esac
4055         fi
4056         _cflags_speed='-O3'
4057         _cflags_size='-Os'
4058     elif $_cc --version 2>/dev/null | grep -q ^icc; then
4059         _type=icc
4060         _ident=$($_cc --version | head -n1)
4061         _depflags='-MMD'
4062         _cflags_speed='-O3'
4063         _cflags_size='-Os'
4064         _cflags_noopt='-O1'
4065         _flags_filter=icc_flags
4066     elif $_cc -v 2>&1 | grep -q xlc; then
4067         _type=xlc
4068         _ident=$($_cc -qversion 2>/dev/null | head -n1)
4069         _cflags_speed='-O5'
4070         _cflags_size='-O5 -qcompact'
4071     elif $_cc -V 2>/dev/null | grep -q Compaq; then
4072         _type=ccc
4073         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
4074         _DEPFLAGS='-M'
4075         _cflags_speed='-fast'
4076         _cflags_size='-O1'
4077         _flags_filter=ccc_flags
4078     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
4079         test -d "$sysroot" || die "No valid sysroot specified."
4080         _type=armcc
4081         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
4082         armcc_conf="$PWD/armcc.conf"
4083         $_cc --arm_linux_configure                 \
4084              --arm_linux_config_file="$armcc_conf" \
4085              --configure_sysroot="$sysroot"        \
4086              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
4087              die "Error creating armcc configuration file."
4088         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
4089         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
4090         as_default="${cross_prefix}gcc"
4091         _depflags='-MMD'
4092         _cflags_speed='-O3'
4093         _cflags_size='-Os'
4094     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
4095         _type=tms470
4096         _ident=$($_cc -version | head -n1 | tr -s ' ')
4097         _flags='--gcc --abi=eabi -me'
4098         _cc_e='-ppl -fe=$@'
4099         _cc_o='-fe=$@'
4100         _depflags='-ppa -ppd=$(@:.o=.d)'
4101         _cflags_speed='-O3 -mf=5'
4102         _cflags_size='-O3 -mf=2'
4103         _flags_filter=tms470_flags
4104     elif $_cc -v 2>&1 | grep -q clang; then
4105         _type=clang
4106         _ident=$($_cc --version 2>/dev/null | head -n1)
4107         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4108         _cflags_speed='-O3'
4109         _cflags_size='-Oz'
4110     elif $_cc -V 2>&1 | grep -q Sun; then
4111         _type=suncc
4112         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
4113         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
4114         _DEPFLAGS='-xM1 -xc99'
4115         _ldflags='-std=c99'
4116         _cflags_speed='-O5'
4117         _cflags_size='-O5 -xspace'
4118         _flags_filter=suncc_flags
4119     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
4120         _type=pathscale
4121         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4122         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4123         _cflags_speed='-O2'
4124         _cflags_size='-Os'
4125         _flags_filter='filter_out -Wdisabled-optimization'
4126     elif $_cc -v 2>&1 | grep -q Open64; then
4127         _type=open64
4128         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
4129         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
4130         _cflags_speed='-O2'
4131         _cflags_size='-Os'
4132         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
4133     elif $_cc -V 2>&1 | grep -q Portland; then
4134         _type=pgi
4135         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
4136         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
4137         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
4138         _cflags_size="-O2 -Munroll=c:1 $opt_common"
4139         _cflags_noopt="-O"
4140         _flags_filter=pgi_flags
4141     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
4142         _type=armasm
4143         _ident=$($_cc | head -n1)
4144         # 4509: "This form of conditional instruction is deprecated"
4145         _flags="-nologo -ignore 4509"
4146         _flags_filter=armasm_flags
4147     elif $_cc 2>&1 | grep -q Intel; then
4148         _type=icl
4149         _ident=$($_cc 2>&1 | head -n1)
4150         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
4151         # Not only is O3 broken on 13.x+ but it is slower on all previous
4152         # versions (tested) as well.
4153         _cflags_speed="-O2"
4154         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
4155         if $_cc 2>&1 | grep -q Linker; then
4156             _ld_o='-out:$@'
4157         else
4158             _ld_o='-Fe$@'
4159         fi
4160         _cc_o='-Fo$@'
4161         _cc_e='-P'
4162         _flags_filter=icl_flags
4163         _ld_lib='lib%.a'
4164         _ld_path='-libpath:'
4165         # -Qdiag-error to make icl error when seeing certain unknown arguments
4166         _flags='-nologo -Qdiag-error:4044,10157'
4167         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
4168         # with MSVC which enables it by default.
4169         _cflags='-Qms0 -Qvec- -Qsimd- -GS -fp:precise'
4170         disable stripping
4171     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
4172         # lld can emulate multiple different linkers; in ms link.exe mode,
4173         # the -? parameter gives the help output which contains an identifyable
4174         # string, while it gives an error in other modes.
4175         _type=lld-link
4176         # The link.exe mode doesn't have a switch for getting the version,
4177         # but we can force it back to gnu mode and get the version from there.
4178         _ident=$($_cc -flavor gnu --version 2>/dev/null)
4179         _ld_o='-out:$@'
4180         _flags_filter=msvc_flags
4181         _ld_lib='lib%.a'
4182         _ld_path='-libpath:'
4183     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
4184         _type=msvc
4185         _ident=$($_cc 2>&1 | head -n1)
4186         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
4187         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
4188         _cflags_speed="-O2"
4189         _cflags_size="-O1"
4190         _cflags_noopt="-O1"
4191         if $_cc -nologo- 2>&1 | grep -q Linker; then
4192             _ld_o='-out:$@'
4193         else
4194             _ld_o='-Fe$@'
4195         fi
4196         _cc_o='-Fo$@'
4197         _cc_e='-P -Fi$@'
4198         _flags_filter=msvc_flags
4199         _ld_lib='lib%.a'
4200         _ld_path='-libpath:'
4201         _flags='-nologo'
4202         disable stripping
4203     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
4204         _type=cparser
4205         _ident=$($_cc --version | head -n1)
4206         _depflags='-MMD'
4207         _cflags_speed='-O4'
4208         _cflags_size='-O2'
4209         _flags_filter=cparser_flags
4210     fi
4211
4212     eval ${pfx}_type=\$_type
4213     eval ${pfx}_ident=\$_ident
4214 }
4215
4216 set_ccvars(){
4217     eval ${1}_C=\${_cc_c-\${${1}_C}}
4218     eval ${1}_E=\${_cc_e-\${${1}_E}}
4219     eval ${1}_O=\${_cc_o-\${${1}_O}}
4220
4221     if [ -n "$_depflags" ]; then
4222         eval ${1}_DEPFLAGS=\$_depflags
4223     else
4224         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
4225         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
4226         eval DEP${1}FLAGS=\$_flags
4227     fi
4228 }
4229
4230 probe_cc cc "$cc" "true"
4231 cflags_filter=$_flags_filter
4232 cflags_speed=$_cflags_speed
4233 cflags_size=$_cflags_size
4234 cflags_noopt=$_cflags_noopt
4235 add_cflags $_flags $_cflags
4236 cc_ldflags=$_ldflags
4237 set_ccvars CC
4238 set_ccvars CXX
4239
4240 probe_cc hostcc "$host_cc"
4241 host_cflags_filter=$_flags_filter
4242 host_cflags_speed=$_cflags_speed
4243 add_host_cflags  $_flags $_cflags
4244 set_ccvars HOSTCC
4245
4246 test -n "$cc_type" && enable $cc_type ||
4247     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
4248
4249 : ${as_default:=$cc}
4250 : ${objcc_default:=$cc}
4251 : ${dep_cc_default:=$cc}
4252 : ${ld_default:=$cc}
4253 : ${host_ld_default:=$host_cc}
4254 set_default ar as objcc dep_cc ld ln_s host_ld windres
4255
4256 probe_cc as "$as"
4257 asflags_filter=$_flags_filter
4258 add_asflags $_flags $_cflags
4259 set_ccvars AS
4260
4261 probe_cc objcc "$objcc"
4262 objcflags_filter=$_flags_filter
4263 add_objcflags $_flags $_cflags
4264 set_ccvars OBJC
4265
4266 probe_cc ld "$ld"
4267 ldflags_filter=$_flags_filter
4268 add_ldflags $_flags $_ldflags
4269 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
4270 LD_O=${_ld_o-$LD_O}
4271 LD_LIB=${_ld_lib-$LD_LIB}
4272 LD_PATH=${_ld_path-$LD_PATH}
4273
4274 probe_cc hostld "$host_ld"
4275 host_ldflags_filter=$_flags_filter
4276 add_host_ldflags $_flags $_ldflags
4277 HOSTLD_O=${_ld_o-$HOSTLD_O}
4278
4279 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
4280     probe_cc depcc "$dep_cc"
4281     CCDEP=${_DEPCMD:-$DEPCMD}
4282     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
4283     DEPCCFLAGS=$_flags
4284 fi
4285
4286 if $ar 2>&1 | grep -q Microsoft; then
4287     arflags="-nologo"
4288     ar_o='-out:$@'
4289 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
4290     arflags="rq"
4291     ar_o='$@'
4292 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
4293     arflags='-Xany -r -c'
4294     ar_o='$@'
4295 elif $ar 2>&1 | grep -q "\[D\] "; then
4296     arflags="rcD"
4297     ar_o='$@'
4298 else
4299     arflags="rc"
4300     ar_o='$@'
4301 fi
4302
4303 add_cflags $extra_cflags
4304 add_cxxflags $extra_cxxflags
4305 add_objcflags $extra_objcflags
4306 add_asflags $extra_cflags
4307
4308 if test -n "$sysroot"; then
4309     case "$cc_type" in
4310         gcc|llvm_gcc|clang)
4311             add_cppflags --sysroot="$sysroot"
4312             add_ldflags --sysroot="$sysroot"
4313 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
4314             add_cppflags -isysroot "$sysroot"
4315             add_ldflags -isysroot "$sysroot"
4316         ;;
4317         tms470)
4318             add_cppflags -I"$sysinclude"
4319             add_ldflags  --sysroot="$sysroot"
4320         ;;
4321     esac
4322 fi
4323
4324 if test "$cpu" = host; then
4325     enabled cross_compile &&
4326         die "--cpu=host makes no sense when cross-compiling."
4327
4328     case "$cc_type" in
4329         gcc|llvm_gcc)
4330             check_native(){
4331                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4332                 sed -n "/cc1.*$1=/{
4333                             s/.*$1=\\([^ ]*\\).*/\\1/
4334                             p
4335                             q
4336                         }" $TMPE
4337             }
4338             cpu=$(check_native -march || check_native -mcpu)
4339         ;;
4340         clang)
4341             check_native(){
4342                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
4343                 sed -n "/cc1.*-target-cpu /{
4344                             s/.*-target-cpu \\([^ ]*\\).*/\\1/
4345                             p
4346                             q
4347                         }" $TMPE
4348             }
4349             cpu=$(check_native -march)
4350         ;;
4351     esac
4352
4353     test "${cpu:-host}" = host &&
4354         die "--cpu=host not supported with compiler $cc"
4355 fi
4356
4357 # Deal with common $arch aliases
4358 case "$arch" in
4359     aarch64|arm64)
4360         arch="aarch64"
4361     ;;
4362     arm*|iPad*|iPhone*)
4363         arch="arm"
4364     ;;
4365     mips*|IP*)
4366         case "$arch" in
4367         *el)
4368             add_cppflags -EL
4369             add_ldflags -EL
4370         ;;
4371         *eb)
4372             add_cppflags -EB
4373             add_ldflags -EB
4374         ;;
4375         esac
4376         arch="mips"
4377     ;;
4378     parisc*|hppa*)
4379         arch="parisc"
4380     ;;
4381     "Power Macintosh"|ppc*|powerpc*)
4382         arch="ppc"
4383     ;;
4384     s390|s390x)
4385         arch="s390"
4386     ;;
4387     sh4|sh)
4388         arch="sh4"
4389     ;;
4390     sun4*|sparc*)
4391         arch="sparc"
4392     ;;
4393     tilegx|tile-gx)
4394         arch="tilegx"
4395     ;;
4396     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
4397         arch="x86"
4398     ;;
4399 esac
4400
4401 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
4402 enable $arch
4403
4404 # Add processor-specific flags
4405 if enabled aarch64; then
4406
4407     case $cpu in
4408         armv*)
4409             cpuflags="-march=$cpu"
4410         ;;
4411         *)
4412             cpuflags="-mcpu=$cpu"
4413         ;;
4414     esac
4415
4416 elif enabled alpha; then
4417
4418     cpuflags="-mcpu=$cpu"
4419
4420 elif enabled arm; then
4421
4422     check_arm_arch() {
4423         check_cpp_condition stddef.h \
4424             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
4425             $cpuflags
4426     }
4427
4428     probe_arm_arch() {
4429         if   check_arm_arch 4;        then echo armv4
4430         elif check_arm_arch 4T;       then echo armv4t
4431         elif check_arm_arch 5;        then echo armv5
4432         elif check_arm_arch 5E;       then echo armv5e
4433         elif check_arm_arch 5T;       then echo armv5t
4434         elif check_arm_arch 5TE;      then echo armv5te
4435         elif check_arm_arch 5TEJ;     then echo armv5te
4436         elif check_arm_arch 6;        then echo armv6
4437         elif check_arm_arch 6J;       then echo armv6j
4438         elif check_arm_arch 6K;       then echo armv6k
4439         elif check_arm_arch 6Z;       then echo armv6z
4440         elif check_arm_arch 6ZK;      then echo armv6zk
4441         elif check_arm_arch 6T2;      then echo armv6t2
4442         elif check_arm_arch 7;        then echo armv7
4443         elif check_arm_arch 7A  7_A;  then echo armv7-a
4444         elif check_arm_arch 7S;       then echo armv7-a
4445         elif check_arm_arch 7R  7_R;  then echo armv7-r
4446         elif check_arm_arch 7M  7_M;  then echo armv7-m
4447         elif check_arm_arch 7EM 7E_M; then echo armv7-m
4448         elif check_arm_arch 8A  8_A;  then echo armv8-a
4449         fi
4450     }
4451
4452     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
4453
4454     case $cpu in
4455         armv*)
4456             cpuflags="-march=$cpu"
4457             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
4458         ;;
4459         *)
4460             cpuflags="-mcpu=$cpu"
4461             case $cpu in
4462                 cortex-a*)                               subarch=armv7a  ;;
4463                 cortex-r*)                               subarch=armv7r  ;;
4464                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
4465                 arm11*)                                  subarch=armv6   ;;
4466                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
4467                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
4468                 *)                             subarch=$(probe_arm_arch) ;;
4469             esac
4470         ;;
4471     esac
4472
4473     case "$subarch" in
4474         armv5t*)    enable fast_clz                ;;
4475         armv[6-8]*)
4476             enable fast_clz
4477             disabled fast_unaligned || enable fast_unaligned
4478             ;;
4479     esac
4480
4481 elif enabled avr32; then
4482
4483     case $cpu in
4484         ap7[02]0[0-2])
4485             subarch="avr32_ap"
4486             cpuflags="-mpart=$cpu"
4487         ;;
4488         ap)
4489             subarch="avr32_ap"
4490             cpuflags="-march=$cpu"
4491         ;;
4492         uc3[ab]*)
4493             subarch="avr32_uc"
4494             cpuflags="-mcpu=$cpu"
4495         ;;
4496         uc)
4497             subarch="avr32_uc"
4498             cpuflags="-march=$cpu"
4499         ;;
4500     esac
4501
4502 elif enabled bfin; then
4503
4504     cpuflags="-mcpu=$cpu"
4505
4506 elif enabled mips; then
4507
4508     cpuflags="-march=$cpu"
4509
4510     if [ "$cpu" != "generic" ]; then
4511         disable mips32r2
4512         disable mips32r5
4513         disable mips64r2
4514         disable mips32r6
4515         disable mips64r6
4516         disable loongson2
4517         disable loongson3
4518
4519         case $cpu in
4520             24kc|24kf*|24kec|34kc|1004kc|24kef*|34kf*|1004kf*|74kc|74kf)
4521                 enable mips32r2
4522                 disable msa
4523             ;;
4524             p5600|i6400|p6600)
4525                 disable mipsdsp
4526                 disable mipsdspr2
4527             ;;
4528             loongson*)
4529                 enable loongson2
4530                 enable loongson3
4531                 enable local_aligned_8 local_aligned_16 local_aligned_32
4532                 enable simd_align_16
4533                 enable fast_64bit
4534                 enable fast_clz
4535                 enable fast_cmov
4536                 enable fast_unaligned
4537                 disable aligned_stack
4538                 disable mipsfpu
4539                 disable mipsdsp
4540                 disable mipsdspr2
4541                 case $cpu in
4542                     loongson3*)
4543                         cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
4544                     ;;
4545                     loongson2e)
4546                         cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
4547                     ;;
4548                     loongson2f)
4549                         cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
4550                     ;;
4551                 esac
4552             ;;
4553             *)
4554                 # Unknown CPU. Disable everything.
4555                 warn "unknown CPU. Disabling all MIPS optimizations."
4556                 disable mipsfpu
4557                 disable mipsdsp
4558                 disable mipsdspr2
4559                 disable msa
4560                 disable mmi
4561             ;;
4562         esac
4563
4564         case $cpu in
4565             24kc)
4566                 disable mipsfpu
4567                 disable mipsdsp
4568                 disable mipsdspr2
4569             ;;
4570             24kf*)
4571                 disable mipsdsp
4572                 disable mipsdspr2
4573             ;;
4574             24kec|34kc|1004kc)
4575                 disable mipsfpu
4576                 disable mipsdspr2
4577             ;;
4578             24kef*|34kf*|1004kf*)
4579                 disable mipsdspr2
4580             ;;
4581             74kc)
4582                 disable mipsfpu
4583             ;;
4584             p5600)
4585                 enable mips32r5
4586                 check_cflags "-mtune=p5600" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops"
4587             ;;
4588             i6400)
4589                 enable mips64r6
4590                 check_cflags "-mtune=i6400 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4591             ;;
4592             p6600)
4593                 enable mips64r6
4594                 check_cflags "-mtune=p6600 -mabi=64" && check_cflags "-msched-weight -mload-store-pairs -funroll-loops" && check_ldflags "-mabi=64"
4595             ;;
4596         esac
4597     else
4598         # We do not disable anything. Is up to the user to disable the unwanted features.
4599         warn 'generic cpu selected'
4600     fi
4601
4602 elif enabled ppc; then
4603
4604     disable ldbrx
4605
4606     case $(tolower $cpu) in
4607         601|ppc601|powerpc601)
4608             cpuflags="-mcpu=601"
4609             disable altivec
4610         ;;
4611         603*|ppc603*|powerpc603*)
4612             cpuflags="-mcpu=603"
4613             disable altivec
4614         ;;
4615         604*|ppc604*|powerpc604*)
4616             cpuflags="-mcpu=604"
4617             disable altivec
4618         ;;
4619         g3|75*|ppc75*|powerpc75*)
4620             cpuflags="-mcpu=750"
4621             disable altivec
4622         ;;
4623         g4|745*|ppc745*|powerpc745*)
4624             cpuflags="-mcpu=7450"
4625             disable vsx
4626         ;;
4627         74*|ppc74*|powerpc74*)
4628             cpuflags="-mcpu=7400"
4629             disable vsx
4630         ;;
4631         g5|970|ppc970|powerpc970)
4632             cpuflags="-mcpu=970"
4633             disable vsx
4634         ;;
4635         power[3-6]*)
4636             cpuflags="-mcpu=$cpu"
4637             disable vsx
4638         ;;
4639         power[7-8]*)
4640             cpuflags="-mcpu=$cpu"
4641         ;;
4642         cell)
4643             cpuflags="-mcpu=cell"
4644             enable ldbrx
4645             disable vsx
4646         ;;
4647         e500mc)
4648             cpuflags="-mcpu=e500mc"
4649             disable altivec
4650         ;;
4651         e500v2)
4652             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
4653             disable altivec
4654             disable dcbzl
4655         ;;
4656         e500)
4657             cpuflags="-mcpu=8540 -mhard-float"
4658             disable altivec
4659             disable dcbzl
4660         ;;
4661     esac
4662
4663 elif enabled sparc; then
4664
4665     case $cpu in
4666         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
4667             cpuflags="-mcpu=$cpu"
4668         ;;
4669         ultrasparc*|niagara[234])
4670             cpuflags="-mcpu=$cpu"
4671         ;;
4672     esac
4673
4674 elif enabled x86; then
4675
4676     case $cpu in
4677         i[345]86|pentium)
4678             cpuflags="-march=$cpu"
4679             disable i686
4680             disable mmx
4681         ;;
4682         # targets that do NOT support nopl and conditional mov (cmov)
4683         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
4684             cpuflags="-march=$cpu"
4685             disable i686
4686         ;;
4687         # targets that do support nopl and conditional mov (cmov)
4688         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
4689         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|skylake*|knl\
4690         |amdfam10|barcelona|b[dt]ver*|znver*)
4691             cpuflags="-march=$cpu"
4692             enable i686
4693             enable fast_cmov
4694         ;;
4695         # targets that do support conditional mov but on which it's slow
4696         pentium4|pentium4m|prescott|nocona)
4697             cpuflags="-march=$cpu"
4698             enable i686
4699             disable fast_cmov
4700         ;;
4701     esac
4702
4703 fi
4704
4705 if [ "$cpu" != generic ]; then
4706     add_cflags  $cpuflags
4707     add_asflags $cpuflags
4708     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
4709 fi
4710
4711 # compiler sanity check
4712 check_exec <<EOF
4713 int main(void){ return 0; }
4714 EOF
4715 if test "$?" != 0; then
4716     echo "$cc is unable to create an executable file."
4717     if test -z "$cross_prefix" && ! enabled cross_compile ; then
4718         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
4719         echo "Only do this if you know what cross compiling means."
4720     fi
4721     die "C compiler test failed."
4722 fi
4723
4724 add_cppflags -D_ISOC99_SOURCE
4725 add_cxxflags -D__STDC_CONSTANT_MACROS
4726 check_cxxflags -std=c++11 || check_cxxflags -std=c++0x
4727
4728 # some compilers silently accept -std=c11, so we also need to check that the
4729 # version macro is defined properly
4730 if test_cflags_cc -std=c11 ctype.h "__STDC_VERSION__ >= 201112L"; then
4731     add_cflags -std=c11
4732 else
4733     check_cflags -std=c99
4734 fi
4735
4736 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
4737 #include <stdlib.h>
4738 EOF
4739 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
4740 #include <stdlib.h>
4741 EOF
4742
4743 add_host_cppflags -D_ISOC99_SOURCE
4744 check_host_cflags -std=c99
4745 check_host_cflags -Wall
4746 check_host_cflags $host_cflags_speed
4747
4748 check_64bit(){
4749     arch32=$1
4750     arch64=$2
4751     expr=$3
4752     check_code cc "" "int test[2*($expr) - 1]" &&
4753         subarch=$arch64 || subarch=$arch32
4754 }
4755
4756 case "$arch" in
4757     aarch64|alpha|ia64)
4758         spic=$shared
4759     ;;
4760     mips)
4761         check_64bit mips mips64 '_MIPS_SIM > 1'
4762         spic=$shared
4763     ;;
4764     parisc)
4765         check_64bit parisc parisc64 'sizeof(void *) > 4'
4766         spic=$shared
4767     ;;
4768     ppc)
4769         check_64bit ppc ppc64 'sizeof(void *) > 4'
4770         spic=$shared
4771     ;;
4772     s390)
4773         check_64bit s390 s390x 'sizeof(void *) > 4'
4774         spic=$shared
4775     ;;
4776     sparc)
4777         check_64bit sparc sparc64 'sizeof(void *) > 4'
4778         spic=$shared
4779     ;;
4780     x86)
4781         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
4782         # Treat x32 as x64 for now. Note it also needs spic=$shared
4783         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
4784             subarch=x86_64
4785         if test "$subarch" = "x86_64"; then
4786             spic=$shared
4787         fi
4788     ;;
4789     ppc)
4790         check_cc <<EOF && subarch="ppc64"
4791         int test[(int)sizeof(char*) - 7];
4792 EOF
4793     ;;
4794 esac
4795
4796 enable $subarch
4797 enabled spic && enable_weak pic
4798
4799 enabled x86_64 && objformat=elf64 || objformat="elf32"
4800
4801 # OS specific
4802 case $target_os in
4803     aix)
4804         SHFLAGS=-shared
4805         add_cppflags '-I\$(SRC_PATH)/compat/aix'
4806         enabled shared && add_ldflags -Wl,-brtl
4807         ;;
4808     android)
4809         disable symver
4810         enable section_data_rel_ro
4811         SLIB_INSTALL_NAME='$(SLIBNAME)'
4812         SLIB_INSTALL_LINKS=
4813         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
4814         ;;
4815     haiku)
4816         prefix_default="/boot/common"
4817         network_extralibs="-lnetwork"
4818         host_extralibs=
4819         ;;
4820     sunos)
4821         SHFLAGS='-shared -Wl,-h,$$(@F)'
4822         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
4823         network_extralibs="-lsocket -lnsl"
4824         add_cppflags -D__EXTENSIONS__
4825         # When using suncc to build, the Solaris linker will mark
4826         # an executable with each instruction set encountered by
4827         # the Solaris assembler.  As our libraries contain their own
4828         # guards for processor-specific code, instead suppress
4829         # generation of the HWCAPS ELF section on Solaris x86 only.
4830         enabled_all suncc x86 &&
4831             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4832             add_ldflags -Wl,-M,mapfile
4833         nm_default='nm -P -g'
4834         version_script='-M'
4835         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
4836         ;;
4837     netbsd)
4838         disable symver
4839         oss_indev_extralibs="-lossaudio"
4840         oss_outdev_extralibs="-lossaudio"
4841         enabled gcc || check_ldflags -Wl,-zmuldefs
4842         ;;
4843     openbsd|bitrig)
4844         disable symver
4845         SHFLAGS='-shared'
4846         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4847         SLIB_INSTALL_LINKS=
4848         oss_indev_extralibs="-lossaudio"
4849         oss_outdev_extralibs="-lossaudio"
4850         ;;
4851     dragonfly)
4852         disable symver
4853         ;;
4854     freebsd)
4855         ;;
4856     bsd/os)
4857         add_extralibs -lpoll -lgnugetopt
4858         strip="strip -d"
4859         ;;
4860     darwin)
4861         enabled ppc && add_asflags -force_cpusubtype_ALL
4862         install_name_dir_default='$(SHLIBDIR)'
4863         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(INSTALL_NAME_DIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4864         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4865         strip="${strip} -x"
4866         add_ldflags -Wl,-dynamic,-search_paths_first
4867         SLIBSUF=".dylib"
4868         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4869         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4870         objformat="macho"
4871         enabled x86_64 && objformat="macho64" || objformat="macho32"
4872         enabled_any pic shared x86_64 ||
4873             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4874         check_header dispatch/dispatch.h &&
4875             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
4876         version_script='-exported_symbols_list'
4877         VERSION_SCRIPT_POSTPROCESS_CMD='tr " " "\n" | sed -n /global:/,/local:/p | grep ";" | tr ";" "\n" | sed -E "s/(.+)/_\1/g" | sed -E "s/(.+[^*])$$$$/\1*/"'
4878         ;;
4879     msys*)
4880         die "Native MSYS builds are discouraged, please use the MINGW environment."
4881         ;;
4882     mingw32*|mingw64*)
4883         if test $target_os = "mingw32ce"; then
4884             disable network
4885         else
4886             target_os=mingw32
4887         fi
4888         LIBTARGET=i386
4889         if enabled x86_64; then
4890             LIBTARGET="i386:x86-64"
4891         elif enabled arm; then
4892             LIBTARGET=arm-wince
4893         fi
4894         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4895         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4896         shlibdir_default="$bindir_default"
4897         SLIBPREF=""
4898         SLIBSUF=".dll"
4899         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4900         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4901         dlltool="${cross_prefix}dlltool"
4902         if check_cmd lib.exe -list; then
4903             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe -nologo -machine:$(LIBTARGET) -def:$$(@:$(SLIBSUF)=.def) -out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4904             if enabled x86_64; then
4905                 LIBTARGET=x64
4906             fi
4907         elif check_cmd $dlltool --version; then
4908             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4909         fi
4910         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4911         SLIB_INSTALL_LINKS=
4912         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4913         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4914         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--disable-auto-image-base'
4915         enabled x86_64 && objformat="win64" || objformat="win32"
4916         ranlib=:
4917         enable dos_paths
4918         check_ldflags -Wl,--nxcompat,--dynamicbase
4919         # Lets work around some stupidity in binutils.
4920         # ld will strip relocations from executables even though we need them
4921         # for dynamicbase (ASLR).  Using -pie does retain the reloc section
4922         # however ld then forgets what the entry point should be (oops) so we
4923         # have to manually (re)set it.
4924         if enabled x86_32; then
4925             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,_mainCRTStartup
4926         elif enabled x86_64; then
4927             disabled debug && add_ldexeflags -Wl,--pic-executable,-e,mainCRTStartup
4928             check_ldflags -Wl,--high-entropy-va # binutils 2.25
4929             # Set image base >4GB for extra entropy with HEASLR
4930             add_ldexeflags -Wl,--image-base,0x140000000
4931             append SHFLAGS -Wl,--image-base,0x180000000
4932         fi
4933         ;;
4934     win32|win64)
4935         disable symver
4936         if enabled shared; then
4937             # Link to the import library instead of the normal static library
4938             # for shared libs.
4939             LD_LIB='%.lib'
4940             # Cannot build both shared and static libs with MSVC or icl.
4941             disable static
4942         fi
4943         enabled x86_32 && check_ldflags -LARGEADDRESSAWARE
4944         shlibdir_default="$bindir_default"
4945         SLIBPREF=""
4946         SLIBSUF=".dll"
4947         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4948         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4949         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4950         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4951         SLIB_INSTALL_LINKS=
4952         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4953         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4954         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4955         enabled x86_64 && objformat="win64" || objformat="win32"
4956         ranlib=:
4957         enable dos_paths
4958         ;;
4959     cygwin*)
4960         target_os=cygwin
4961         shlibdir_default="$bindir_default"
4962         SLIBPREF="cyg"
4963         SLIBSUF=".dll"
4964         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4965         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4966         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4967         SLIB_INSTALL_LINKS=
4968         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4969         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4970         enabled x86_64 && objformat="win64" || objformat="win32"
4971         enable dos_paths
4972         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4973         add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4974         ;;
4975     *-dos|freedos|opendos)
4976         network_extralibs="-lsocket"
4977         objformat="coff"
4978         enable dos_paths
4979         add_cppflags -U__STRICT_ANSI__
4980         ;;
4981     linux)
4982         enable dv1394
4983         enable section_data_rel_ro
4984         ;;
4985     irix*)
4986         target_os=irix
4987         ranlib="echo ignoring ranlib"
4988         ;;
4989     os/2*)
4990         strip="lxlite -CS"
4991         objformat="aout"
4992         add_cppflags -D_GNU_SOURCE
4993         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
4994         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4995         LIBSUF="_s.a"
4996         SLIBPREF=""
4997         SLIBSUF=".dll"
4998         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4999         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(FULLNAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
5000         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(FULLNAME).def; \
5001             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(FULLNAME).def; \
5002             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(FULLNAME).def; \
5003             echo EXPORTS >> $(SUBDIR)$(FULLNAME).def; \
5004             emxexp $(OBJS) >> $(SUBDIR)$(FULLNAME).def'
5005         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.a $(SUBDIR)$(FULLNAME).def; \
5006             emximp -o $(SUBDIR)$(LIBPREF)$(FULLNAME)_dll.lib $(SUBDIR)$(FULLNAME).def;'
5007         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
5008         SLIB_INSTALL_LINKS=
5009         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(FULLNAME)_dll.a $(LIBPREF)$(FULLNAME)_dll.lib'
5010         enable dos_paths
5011         enable_weak os2threads
5012         ;;
5013     gnu/kfreebsd)
5014         add_cppflags -D_BSD_SOURCE
5015         ;;
5016     gnu)
5017         ;;
5018     qnx)
5019         add_cppflags -D_QNX_SOURCE
5020         network_extralibs="-lsocket"
5021         ;;
5022     symbian)
5023         SLIBSUF=".dll"
5024         enable dos_paths
5025         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
5026         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
5027         add_ldflags -Wl,--target1-abs,--no-undefined \
5028                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
5029                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
5030         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
5031                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
5032                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
5033         ;;
5034     osf1)
5035         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
5036         ;;
5037     minix)
5038         ;;
5039     none)
5040         ;;
5041     *)
5042         die "Unknown OS '$target_os'."
5043         ;;
5044 esac
5045
5046 # test if creating links works
5047 link_dest=$(mktemp -u $TMPDIR/dest_XXXXXXXX)
5048 link_name=$(mktemp -u $TMPDIR/name_XXXXXXXX)
5049 mkdir "$link_dest"
5050 $ln_s "$link_dest" "$link_name"
5051 touch "$link_dest/test_file"
5052 if [ "$source_path" != "." ] && ([ ! -d src ] || [ -L src ]) && [ -e "$link_name/test_file" ]; then
5053     # create link to source path
5054     [ -e src ] && rm src
5055     $ln_s "$source_path" src
5056     source_link=src
5057 else
5058     # creating directory links doesn't work
5059     # fall back to using the full source path
5060     source_link="$source_path"
5061 fi
5062 # cleanup
5063 rm -r "$link_dest"
5064 rm -r "$link_name"
5065
5066 # determine libc flavour
5067
5068 probe_libc(){
5069     pfx=$1
5070     pfx_no_=${pfx%_}
5071     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
5072     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
5073         eval ${pfx}libc_type=uclibc
5074         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5075     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
5076         eval ${pfx}libc_type=glibc
5077         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
5078     # MinGW headers can be installed on Cygwin, so check for newlib first.
5079     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
5080         eval ${pfx}libc_type=newlib
5081         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
5082     # MinGW64 is backwards compatible with MinGW32, so check for it first.
5083     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
5084         eval ${pfx}libc_type=mingw64
5085         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
5086             add_compat msvcrt/snprintf.o
5087             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
5088         fi
5089         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5090         eval test \$${pfx_no_}cc_type = "gcc" &&
5091             add_${pfx}cppflags -D__printf__=__gnu_printf__
5092     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
5093          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
5094         eval ${pfx}libc_type=mingw32
5095         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
5096             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
5097             die "ERROR: MinGW32 runtime version must be >= 3.15."
5098         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
5099         check_${pfx}cpp_condition _mingw.h "defined(_WIN32_WINNT) && _WIN32_WINNT >= 0x0502" ||
5100             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
5101         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
5102             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
5103         eval test \$${pfx_no_}cc_type = "gcc" &&
5104             add_${pfx}cppflags -D__printf__=__gnu_printf__
5105     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
5106         eval ${pfx}libc_type=msvcrt
5107         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
5108             if [ "$pfx" = host_ ]; then
5109                 add_host_cppflags -Dsnprintf=_snprintf
5110             else
5111                 add_compat strtod.o strtod=avpriv_strtod
5112                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
5113                                              _snprintf=avpriv_snprintf  \
5114                                              vsnprintf=avpriv_vsnprintf
5115             fi
5116         fi
5117         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
5118         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
5119         # 0x601 by default unless something else is set by the user.
5120         # This can easily lead to us detecting functions only present
5121         # in such new versions and producing binaries requiring windows 7.0.
5122         # Therefore explicitly set the default to XP unless the user has
5123         # set something else on the command line.
5124         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
5125         # family. For these cases, configure is free to use any functions
5126         # found in the SDK headers by default. (Alternatively, we could force
5127         # _WIN32_WINNT to 0x0602 in that case.)
5128         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
5129             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
5130 #ifdef WINAPI_FAMILY
5131 #include <winapifamily.h>
5132 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
5133 #error not desktop
5134 #endif
5135 #endif
5136 EOF
5137         if [ "$pfx" = "" ]; then
5138             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
5139             check_func strtoull || add_cflags -Dstrtoull=_strtoui64
5140         fi
5141     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
5142         eval ${pfx}libc_type=klibc
5143     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
5144         eval ${pfx}libc_type=bionic
5145     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
5146         eval ${pfx}libc_type=solaris
5147         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
5148     fi
5149     check_${pfx}cc <<EOF
5150 #include <time.h>
5151 void *v = localtime_r;
5152 EOF
5153 test "$?" != 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
5154 #include <time.h>
5155 void *v = localtime_r;
5156 EOF
5157
5158 }
5159
5160 probe_libc
5161 test -n "$libc_type" && enable libc_$libc_type
5162 probe_libc host_
5163 test -n "$host_libc_type" && enable host_libc_$host_libc_type
5164
5165 case $libc_type in
5166     bionic)
5167         add_compat strtod.o strtod=avpriv_strtod
5168         ;;
5169 esac
5170
5171 # hacks for compiler/libc/os combinations
5172
5173 if enabled_all tms470 libc_glibc; then
5174     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
5175     add_cppflags -D__USER_LABEL_PREFIX__=
5176     add_cppflags -D__builtin_memset=memset
5177     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
5178     add_cflags   -pds=48    # incompatible redefinition of macro
5179 fi
5180
5181 if enabled_all ccc libc_glibc; then
5182     add_ldflags -Wl,-z,now  # calls to libots crash without this
5183 fi
5184
5185 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
5186     add_cppflags '-I\$(SRC_PATH)/compat/float'
5187
5188 esc(){
5189     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
5190 }
5191
5192 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" > ffbuild/config.fate
5193
5194 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
5195
5196 set_default libdir
5197 : ${shlibdir_default:="$libdir"}
5198 : ${pkgconfigdir_default:="$libdir/pkgconfig"}
5199
5200 set_default $PATHS_LIST
5201 set_default nm
5202
5203 # we need to build at least one lib type
5204 if ! enabled_any static shared; then
5205     cat <<EOF
5206 At least one library type must be built.
5207 Specify --enable-static to build the static libraries or --enable-shared to
5208 build the shared libraries as well. To only build the shared libraries specify
5209 --disable-static in addition to --enable-shared.
5210 EOF
5211     exit 1
5212 fi
5213
5214 disabled optimizations || enabled ossfuzz || check_cflags -fomit-frame-pointer
5215
5216 enable_weak_pic() {
5217     disabled pic && return
5218     enable pic
5219     add_cppflags -DPIC
5220     case "$target_os" in
5221     mingw*|cygwin*)
5222         ;;
5223     *)
5224         add_cflags -fPIC
5225         ;;
5226     esac
5227     add_asflags  -fPIC
5228 }
5229
5230 enabled pic && enable_weak_pic
5231
5232 check_cc <<EOF || die "Symbol mangling check failed."
5233 int ff_extern;
5234 EOF
5235 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
5236 extern_prefix=${sym%%ff_extern*}
5237
5238 check_cc <<EOF && enable_weak inline_asm
5239 void foo(void) { __asm__ volatile ("" ::); }
5240 EOF
5241
5242 _restrict=
5243 for restrict_keyword in restrict __restrict__ __restrict; do
5244     check_cc <<EOF && _restrict=$restrict_keyword && break
5245 void foo(char * $restrict_keyword p);
5246 EOF
5247 done
5248
5249 check_cc <<EOF && enable pragma_deprecated
5250 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
5251 EOF
5252
5253 check_cc <<EOF && enable attribute_packed
5254 struct { int x; } __attribute__((packed)) x;
5255 EOF
5256
5257 check_cc <<EOF && enable attribute_may_alias
5258 union { int x; } __attribute__((may_alias)) x;
5259 EOF
5260
5261 check_cc <<EOF || die "endian test failed"
5262 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
5263 EOF
5264 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
5265
5266 if ! enabled ppc64 || enabled bigendian; then
5267     disable vsx
5268 fi
5269
5270 check_gas() {
5271     log "check_gas using '$as' as AS"
5272     # :vararg is used on aarch64, arm and ppc altivec
5273     check_as <<EOF || return 1
5274 .macro m n, y:vararg=0
5275 \n: .int \y
5276 .endm
5277 m x
5278 EOF
5279     # .altmacro is only used in arm asm
5280     ! enabled arm || check_as <<EOF || return 1
5281 .altmacro
5282 EOF
5283     enable gnu_as
5284     return 0
5285 }
5286
5287 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
5288     nogas=:
5289     enabled_any arm aarch64 && nogas=die
5290     enabled_all ppc altivec && [ $target_os_default != aix ] && nogas=warn
5291     as_noop=-v
5292
5293     case $as_type in
5294         arm*) gaspp_as_type=armasm; as_noop=-h ;;
5295         gcc)  gaspp_as_type=gas ;;
5296         *)    gaspp_as_type=$as_type ;;
5297     esac
5298
5299     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
5300
5301     test "${as#*gas-preprocessor.pl}" != "$as" ||
5302     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- ${as:=$cc} $as_noop &&
5303         gas="${gas:=gas-preprocessor.pl} -arch $arch -as-type $gaspp_as_type -- ${as:=$cc}"
5304
5305     if ! check_gas ; then
5306         as=${gas:=$as}
5307         check_gas || \
5308             $nogas "GNU assembler not found, install/update gas-preprocessor"
5309     fi
5310
5311     check_as <<EOF && enable as_func
5312 .func test
5313 .endfunc
5314 EOF
5315 fi
5316
5317 check_inline_asm inline_asm_labels '"1:\n"'
5318
5319 check_inline_asm inline_asm_nonlocal_labels '"Label:\n"'
5320
5321 if enabled aarch64; then
5322     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
5323     # internal assembler in clang 3.3 does not support this instruction
5324     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
5325     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
5326
5327     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
5328
5329 elif enabled alpha; then
5330
5331     check_cflags -mieee
5332
5333 elif enabled arm; then
5334
5335     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
5336
5337     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
5338 float func(float a, float b){ return a+b; }
5339 EOF
5340
5341     enabled thumb && check_cflags -mthumb || check_cflags -marm
5342
5343     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
5344         enable vfp_args
5345     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
5346         enable vfp_args
5347     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
5348         case "${cross_prefix:-$cc}" in
5349             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
5350             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
5351 __asm__ (".eabi_attribute 28, 1");
5352 int main(void) { return 0; }
5353 EOF
5354         esac
5355         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
5356     fi
5357
5358     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
5359     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
5360     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
5361     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
5362     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
5363     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
5364     enabled setend  && check_insn setend  'setend be'
5365
5366     [ $target_os = linux ] || [ $target_os = android ] ||
5367         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
5368             $ARCH_EXT_LIST_ARM
5369
5370     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
5371
5372     check_as <<EOF && enable as_dn_directive
5373 ra .dn d0.i16
5374 .unreq ra
5375 EOF
5376     check_as <<EOF && enable as_fpu_directive
5377 .fpu neon
5378 EOF
5379
5380     # llvm's integrated assembler supports .object_arch from llvm 3.5
5381     [ "$objformat" = elf32 ] || [ "$objformat" = elf64 ] &&
5382         check_as <<EOF && enable as_object_arch
5383 .object_arch armv4
5384 EOF
5385
5386     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
5387
5388 elif enabled mips; then
5389
5390     enabled loongson2 && check_inline_asm loongson2 '"dmult.g $8, $9, $10"'
5391     enabled loongson3 && check_inline_asm loongson3 '"gsldxc1 $f0, 0($2, $3)"'
5392     enabled mmi && check_inline_asm mmi '"punpcklhw $f0, $f0, $f0"'
5393
5394     # Enable minimum ISA based on selected options
5395     if enabled mips64; then
5396         enabled mips64r6 && check_inline_asm_flags mips64r6 '"dlsa $0, $0, $0, 1"' '-mips64r6'
5397         enabled mips64r2 && check_inline_asm_flags mips64r2 '"dext $0, $0, 0, 1"' '-mips64r2'
5398         disabled mips64r6 && disabled mips64r2 && check_inline_asm_flags mips64r1 '"daddi $0, $0, 0"' '-mips64'
5399     else
5400         enabled mips32r6 && check_inline_asm_flags mips32r6 '"aui $0, $0, 0"' '-mips32r6'
5401         enabled mips32r5 && check_inline_asm_flags mips32r5 '"eretnc"' '-mips32r5'
5402         enabled mips32r2 && check_inline_asm_flags mips32r2 '"ext $0, $0, 0, 1"' '-mips32r2'
5403         disabled mips32r6 && disabled mips32r5 && disabled mips32r2 && check_inline_asm_flags mips32r1 '"addi $0, $0, 0"' '-mips32'
5404     fi
5405
5406     enabled mipsfpu && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f2"' '-mhard-float'
5407     enabled mipsfpu && (enabled mips32r5 || enabled mips32r6 || enabled mips64r6) && check_inline_asm_flags mipsfpu '"cvt.d.l $f0, $f1"' '-mfp64'
5408     enabled mipsfpu && enabled msa && check_inline_asm_flags msa '"addvi.b $w0, $w1, 1"' '-mmsa' && check_header msa.h || disable msa
5409     enabled mipsdsp && check_inline_asm_flags mipsdsp '"addu.qb $t0, $t1, $t2"' '-mdsp'
5410     enabled mipsdspr2 && check_inline_asm_flags mipsdspr2 '"absq_s.qb $t0, $t1"' '-mdspr2'
5411
5412     if enabled bigendian && enabled msa; then
5413         disable msa
5414     fi
5415
5416 elif enabled parisc; then
5417
5418     if enabled gcc; then
5419         case $($cc -dumpversion) in
5420             4.[3-9].*) check_cflags -fno-optimize-sibling-calls ;;
5421         esac
5422     fi
5423
5424 elif enabled ppc; then
5425
5426     enable local_aligned_8 local_aligned_16 local_aligned_32
5427
5428     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
5429     check_inline_asm ibm_asm   '"add 0, 0, 0"'
5430     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
5431     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
5432
5433     # AltiVec flags: The FSF version of GCC differs from the Apple version
5434     if enabled altivec; then
5435         check_cflags -maltivec -mabi=altivec &&
5436         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
5437         check_cflags -faltivec
5438
5439         # check if our compiler supports Motorola AltiVec C API
5440         check_cc <<EOF || disable altivec
5441 $inc_altivec_h
5442 int main(void) {
5443     vector signed int v1 = (vector signed int) { 0 };
5444     vector signed int v2 = (vector signed int) { 1 };
5445     v1 = vec_add(v1, v2);
5446     return 0;
5447 }
5448 EOF
5449
5450         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
5451     fi
5452
5453     if enabled vsx; then
5454         check_cflags -mvsx &&
5455         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
5456     fi
5457
5458     if enabled power8; then
5459         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
5460     fi
5461
5462 elif enabled x86; then
5463
5464     check_builtin rdtsc    intrin.h   "__rdtsc()"
5465     check_builtin mm_empty mmintrin.h "_mm_empty()"
5466
5467     enable local_aligned_8 local_aligned_16 local_aligned_32
5468
5469     # check whether EBP is available on x86
5470     # As 'i' is stored on the stack, this program will crash
5471     # if the base pointer is used to access it because the
5472     # base pointer is cleared in the inline assembly code.
5473     check_exec_crash <<EOF && enable ebp_available
5474 volatile int i=0;
5475 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
5476 return i;
5477 EOF
5478
5479     # check whether EBX is available on x86
5480     check_inline_asm ebx_available '""::"b"(0)' &&
5481         check_inline_asm ebx_available '"":::"%ebx"'
5482
5483     # check whether xmm clobbers are supported
5484     check_inline_asm xmm_clobbers '"":::"%xmm0"'
5485
5486     check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test, %eax"' ||
5487         check_inline_asm inline_asm_direct_symbol_refs '"movl '$extern_prefix'test(%rip), %eax"'
5488
5489     # check whether binutils is new enough to compile SSSE3/MMXEXT
5490     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
5491     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
5492
5493     probe_x86asm(){
5494         x86asmexe_probe=$1
5495         if check_cmd $x86asmexe_probe -v; then
5496             x86asmexe=$x86asmexe_probe
5497             x86asm_type=nasm
5498             x86asm_debug="-g -F dwarf"
5499             X86ASM_DEPFLAGS='-MD $(@:.o=.d)'
5500         elif check_cmd $x86asmexe_probe --version; then
5501             x86asmexe=$x86asmexe_probe
5502             x86asm_type=yasm
5503             x86asm_debug="-g dwarf2"
5504             X86ASMDEP='$(DEPX86ASM) $(X86ASMFLAGS) -M $(X86ASM_O) $< > $(@:.o=.d)'
5505         fi
5506         check_x86asm "movbe ecx, [5]" && enable x86asm
5507     }
5508
5509     if ! disabled_any asm mmx x86asm; then
5510         disable x86asm
5511         for program in $x86asmexe nasm yasm; do
5512             probe_x86asm $program && break
5513         done
5514         disabled x86asm && die "nasm/yasm not found or too old. Use --disable-x86asm for a crippled build."
5515         X86ASMFLAGS="-f $objformat"
5516         enabled pic               && append X86ASMFLAGS "-DPIC"
5517         test -n "$extern_prefix"  && append X86ASMFLAGS "-DPREFIX"
5518         case "$objformat" in
5519             elf*) enabled debug && append X86ASMFLAGS $x86asm_debug ;;
5520         esac
5521
5522         check_x86asm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
5523         check_x86asm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
5524         check_x86asm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
5525         check_x86asm "CPU amdnop" || disable cpunop
5526     fi
5527
5528     case "$cpu" in
5529         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
5530             disable fast_clz
5531         ;;
5532     esac
5533
5534 fi
5535
5536 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
5537
5538 check_ldflags -Wl,--as-needed
5539 check_ldflags -Wl,-z,noexecstack
5540
5541 if check_func dlopen && check_func dlsym; then
5542     ldl=
5543 elif check_func dlopen -ldl && check_func dlsym -ldl; then
5544     ldl=-ldl
5545 fi
5546
5547 avisynth_demuxer_extralibs='$ldl'
5548 cuda_extralibs='$ldl'
5549 decklink_outdev_extralibs="$decklink_outdev_extralibs $ldl"
5550 decklink_indev_extralibs="$decklink_indev_extralibs $ldl"
5551 frei0r_filter_extralibs='$ldl'
5552 frei0r_src_filter_extralibs='$ldl'
5553 ladspa_filter_extralibs='$ldl'
5554 nvenc_extralibs='$ldl'
5555 coreimage_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5556 coreimagesrc_filter_extralibs="-framework QuartzCore -framework AppKit -framework OpenGL"
5557
5558 if ! disabled network; then
5559     check_func getaddrinfo $network_extralibs
5560     check_func inet_aton $network_extralibs
5561
5562     check_type netdb.h "struct addrinfo"
5563     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
5564     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
5565     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
5566     check_type poll.h "struct pollfd"
5567     check_type netinet/sctp.h "struct sctp_event_subscribe"
5568     check_struct "sys/socket.h" "struct msghdr" msg_flags
5569     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
5570     check_type netinet/in.h "struct sockaddr_in6"
5571     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
5572     check_type "sys/types.h sys/socket.h" socklen_t
5573
5574     # Prefer arpa/inet.h over winsock2
5575     if check_header arpa/inet.h ; then
5576         check_func closesocket
5577     elif check_header winsock2.h ; then
5578         check_func_headers winsock2.h closesocket -lws2 &&
5579             network_extralibs="-lws2" ||
5580         { check_func_headers winsock2.h closesocket -lws2_32 &&
5581             network_extralibs="-lws2_32"; } || disable winsock2_h network
5582         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
5583
5584         check_type ws2tcpip.h socklen_t
5585         check_type ws2tcpip.h "struct addrinfo"
5586         check_type ws2tcpip.h "struct group_source_req"
5587         check_type ws2tcpip.h "struct ip_mreq_source"
5588         check_type ws2tcpip.h "struct ipv6_mreq"
5589         check_type winsock2.h "struct pollfd"
5590         check_struct winsock2.h "struct sockaddr" sa_len
5591         check_type ws2tcpip.h "struct sockaddr_in6"
5592         check_type ws2tcpip.h "struct sockaddr_storage"
5593     else
5594         disable network
5595     fi
5596 fi
5597
5598 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
5599 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
5600 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
5601 check_builtin sarestart signal.h "SA_RESTART"
5602 check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)" -lpthread
5603 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
5604 check_builtin gmtime_r time.h "time_t *time; struct tm *tm; gmtime_r(time, tm)"
5605 check_builtin localtime_r time.h "time_t *time; struct tm *tm; localtime_r(time, tm)"
5606 check_builtin x264_csp_bgr "stdint.h x264.h" "X264_CSP_BGR"
5607
5608 case "$custom_allocator" in
5609     jemalloc)
5610         # jemalloc by default does not use a prefix
5611         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
5612     ;;
5613     tcmalloc)
5614         require_pkg_config libtcmalloc gperftools/tcmalloc.h tc_malloc
5615         malloc_prefix=tc_
5616     ;;
5617 esac
5618
5619 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
5620 check_func  ${malloc_prefix}memalign            && enable memalign
5621 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
5622
5623 check_func  access
5624 check_func_headers stdlib.h arc4random
5625 check_func_headers time.h clock_gettime ||
5626     { check_lib clock_gettime time.h clock_gettime -lrt && LIBRT="-lrt"; }
5627 check_func  fcntl
5628 check_func  fork
5629 check_func  gethrtime
5630 check_func  getopt
5631 check_func  getrusage
5632 check_func  gettimeofday
5633 check_func  isatty
5634 check_func  mach_absolute_time
5635 check_func  mkstemp
5636 check_func  mmap
5637 check_func  mprotect
5638 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
5639 check_func_headers time.h nanosleep ||
5640     { check_lib nanosleep time.h nanosleep -lrt && LIBRT="-lrt"; }
5641 check_func  sched_getaffinity
5642 check_func  setrlimit
5643 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
5644 check_func  strerror_r
5645 check_func  sysconf
5646 check_func  sysctl
5647 check_func  usleep
5648
5649 check_func_headers conio.h kbhit
5650 check_func_headers io.h setmode
5651 check_func_headers lzo/lzo1x.h lzo1x_999_compress
5652 check_func_headers stdlib.h getenv
5653 check_func_headers sys/stat.h lstat
5654
5655 check_func_headers windows.h GetProcessAffinityMask
5656 check_func_headers windows.h GetProcessTimes
5657 check_func_headers windows.h GetSystemTimeAsFileTime
5658 check_func_headers windows.h LoadLibrary
5659 check_func_headers windows.h MapViewOfFile
5660 check_func_headers windows.h PeekNamedPipe
5661 check_func_headers windows.h SetConsoleTextAttribute
5662 check_func_headers windows.h SetConsoleCtrlHandler
5663 check_func_headers windows.h Sleep
5664 check_func_headers windows.h VirtualAlloc
5665 check_struct windows.h "CONDITION_VARIABLE" Ptr
5666 check_func_headers glob.h glob
5667 enabled xlib &&
5668     check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
5669
5670 check_header AudioToolbox/AudioToolbox.h
5671 check_header d3d11.h
5672 check_header direct.h
5673 check_header dirent.h
5674 check_header dlfcn.h
5675 check_header dxva.h
5676 check_header dxva2api.h -D_WIN32_WINNT=0x0600
5677 check_header io.h
5678 check_header libcrystalhd/libcrystalhd_if.h
5679 check_header mach/mach_time.h
5680 check_header malloc.h
5681 check_header net/udplite.h
5682 check_header poll.h
5683 check_header sys/mman.h
5684 check_header sys/param.h
5685 check_header sys/resource.h
5686 check_header sys/select.h
5687 check_header sys/time.h
5688 check_header sys/un.h
5689 check_header termios.h
5690 check_header unistd.h
5691 check_header valgrind/valgrind.h
5692 check_header VideoDecodeAcceleration/VDADecoder.h
5693 check_header VideoToolbox/VideoToolbox.h
5694 check_func_headers VideoToolbox/VTCompressionSession.h VTCompressionSessionPrepareToEncodeFrames -framework VideoToolbox
5695 enabled videotoolbox && check_func_headers CoreVideo/CVImageBuffer.h kCVImageBufferColorPrimaries_ITU_R_2020 -framework CoreVideo
5696 check_header windows.h
5697 check_header X11/extensions/XvMClib.h
5698 check_header asm/types.h
5699
5700 # it seems there are versions of clang in some distros that try to use the
5701 # gcc headers, which explodes for stdatomic
5702 # so we also check that atomics actually work here
5703 check_builtin stdatomic_h stdatomic.h "atomic_int foo, bar = ATOMIC_VAR_INIT(-1); atomic_store(&foo, 0)"
5704
5705 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
5706 check_lib wincrypt "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
5707 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
5708
5709 check_lib coreservices "CoreServices/CoreServices.h" UTGetOSTypeFromString "-framework CoreServices"
5710
5711 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
5712
5713 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5714 check_type "windows.h dxva.h" "DXVA_PicParams_VP9" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
5715 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
5716 check_type "windows.h d3d11.h" "ID3D11VideoContext"
5717 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
5718
5719 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
5720 check_struct "va/va.h" "VADecPictureParameterBufferVP9" bit_depth
5721 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
5722 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
5723 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
5724 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
5725 check_type "va/va.h va/va_enc_mpeg2.h" "VAEncPictureParameterBufferMPEG2"
5726 check_type "va/va.h va/va_enc_vp8.h"  "VAEncPictureParameterBufferVP8"
5727
5728 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
5729
5730 check_cpp_condition windows.h "!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)" && enable winrt || disable winrt
5731
5732 if ! disabled w32threads && ! enabled pthreads; then
5733     check_func_headers "windows.h process.h" _beginthreadex &&
5734         enable w32threads || disable w32threads
5735     if ! enabled w32threads && enabled winrt; then
5736         check_func_headers "windows.h" CreateThread &&
5737             enable w32threads || disable w32threads
5738     fi
5739 fi
5740
5741 # check for some common methods of building with pthread support
5742 # do this before the optional library checks as some of them require pthreads
5743 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
5744     if check_lib pthreads pthread.h pthread_join   -pthread &&
5745        check_lib pthreads pthread.h pthread_create -pthread; then
5746         add_cflags -pthread
5747     elif check_lib pthreads pthread.h pthread_join   -pthreads &&
5748          check_lib pthreads pthread.h pthread_create -pthreads; then
5749         add_cflags -pthreads
5750     elif check_lib pthreads pthread.h pthread_join   -ldl -pthread &&
5751          check_lib pthreads pthread.h pthread_create -ldl -pthread; then
5752         add_cflags -ldl -pthread
5753     elif check_lib pthreads pthread.h pthread_join   -lpthreadGC2 &&
5754          check_lib pthreads pthread.h pthread_create -lpthreadGC2; then
5755         :
5756     elif check_lib pthreads pthread.h pthread_join   -lpthread &&
5757          check_lib pthreads pthread.h pthread_create -lpthread; then
5758         :
5759     elif check_func pthread_join && check_func pthread_create; then
5760         enable pthreads
5761     fi
5762     check_code cc "pthread.h" "static pthread_mutex_t atomic_lock = PTHREAD_MUTEX_INITIALIZER" || disable pthreads
5763 fi
5764
5765
5766 if enabled pthreads; then
5767   check_func pthread_cancel
5768 fi
5769
5770 enabled pthreads &&
5771     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)"
5772
5773 disabled  zlib || check_lib zlib   zlib.h      zlibVersion    -lz
5774 disabled bzlib || check_lib bzlib bzlib.h BZ2_bzlibVersion    -lbz2
5775 disabled  lzma || check_lib lzma   lzma.h lzma_version_number -llzma
5776
5777 check_lib libm math.h sin -lm && LIBM="-lm"
5778 disabled crystalhd || check_lib crystalhd "stdint.h libcrystalhd/libcrystalhd_if.h" DtsCrystalHDVersion -lcrystalhd
5779
5780 atan2f_args=2
5781 copysign_args=2
5782 hypot_args=2
5783 ldexpf_args=2
5784 powf_args=2
5785
5786 for func in $MATH_FUNCS; do
5787     eval check_mathfunc $func \${${func}_args:-1} $LIBM
5788 done
5789
5790 for func in $COMPLEX_FUNCS; do
5791     eval check_complexfunc $func \${${func}_args:-1}
5792 done
5793
5794 # these are off by default, so fail if requested and not available
5795 enabled avfoundation_indev && { check_header_objcc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
5796 enabled avfoundation_indev && { check_lib avfoundation_indev CoreGraphics/CoreGraphics.h CGGetActiveDisplayList -framework CoreGraphics ||
5797                                 check_lib avfoundation_indev ApplicationServices/ApplicationServices.h CGGetActiveDisplayList -framework ApplicationServices; }
5798 enabled cuda_sdk          && require cuda_sdk cuda.h cuCtxCreate -lcuda
5799 enabled cuvid             && { enabled cuda ||
5800                                die "ERROR: CUVID requires CUDA"; }
5801 enabled chromaprint       && require chromaprint chromaprint.h chromaprint_get_version -lchromaprint
5802 enabled coreimage_filter  && { check_header_objcc QuartzCore/CoreImage.h || disable coreimage_filter; }
5803 enabled coreimagesrc_filter && { check_header_objcc QuartzCore/CoreImage.h || disable coreimagesrc_filter; }
5804 enabled decklink          && { { check_header DeckLinkAPI.h || die "ERROR: DeckLinkAPI.h header not found"; } &&
5805                                { check_cpp_condition DeckLinkAPIVersion.h "BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a060100" || die "ERROR: Decklink API version must be >= 10.6.1."; } }
5806 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
5807 enabled gmp               && require gmp gmp.h mpz_export -lgmp
5808 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
5809 enabled jni               && { [ $target_os = "android" ] && check_header jni.h && enabled pthreads || die "ERROR: jni not found"; }
5810 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
5811 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
5812 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
5813 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
5814 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
5815 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
5816                              { check_lib libcelt celt/celt.h celt_decoder_create_custom -lcelt0 ||
5817                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
5818 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
5819 enabled libdc1394         && require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new
5820 enabled libfdk_aac        && { use_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen ||
5821                                { require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac &&
5822                                  warn "using libfdk without pkg-config"; } }
5823 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"
5824 enabled libflite          && require libflite "flite/flite.h" flite_init $flite_extralibs
5825 enabled fontconfig        && enable libfontconfig
5826 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
5827 enabled libfreetype       && require_pkg_config freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
5828 enabled libfribidi        && require_pkg_config fribidi fribidi.h fribidi_version_info
5829 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
5830 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
5831                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
5832                                done || die "ERROR: libgsm not found"; }
5833 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
5834 enabled libkvazaar        && require_pkg_config "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
5835 # While it may appear that require is being used as a pkg-config
5836 # fallback for libmfx, it is actually being used to detect a different
5837 # installation route altogether.  If libmfx is installed via the Intel
5838 # Media SDK or Intel Media Server Studio, these don't come with
5839 # pkg-config support.  Instead, users should make sure that the build
5840 # can find the libraries and headers through other means.
5841 enabled libmfx            && { use_pkg_config libmfx "mfx/mfxvideo.h" MFXInit ||
5842                                { require libmfx "mfx/mfxvideo.h" MFXInit -llibmfx && warn "using libmfx without pkg-config"; } }
5843 enabled libmodplug        && require_pkg_config libmodplug libmodplug/modplug.h ModPlug_Load
5844 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
5845 enabled libmysofa         && require libmysofa "mysofa.h" mysofa_load -lmysofa
5846 enabled libnpp            && require libnpp npp.h nppGetLibVersion -lnppi -lnppc
5847 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
5848 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
5849 enabled libopencv         && { check_header opencv2/core/core_c.h &&
5850                                { use_pkg_config opencv opencv2/core/core_c.h cvCreateImageHeader ||
5851                                  require opencv opencv2/core/core_c.h cvCreateImageHeader -lopencv_core -lopencv_imgproc; } ||
5852                                require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader; }
5853 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
5854 enabled libopenjpeg       && { { check_lib libopenjpeg openjpeg-2.1/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5855                                check_lib libopenjpeg openjpeg-2.1/openjpeg.h opj_version -lopenjp2 ||
5856                                { check_lib libopenjpeg openjpeg-2.0/openjpeg.h opj_version -lopenjp2 -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5857                                { check_lib libopenjpeg openjpeg-1.5/openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5858                                { check_lib libopenjpeg openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC && add_cppflags -DOPJ_STATIC; } ||
5859                                die "ERROR: libopenjpeg not found"; }
5860 enabled libopenmpt        && require_pkg_config "libopenmpt >= 0.2.6557" libopenmpt/libopenmpt.h openmpt_module_create
5861 enabled libopus           && {
5862     enabled libopus_decoder && {
5863         require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
5864     }
5865     enabled libopus_encoder && {
5866         require_pkg_config opus opus_multistream.h opus_multistream_surround_encoder_create
5867     }
5868 }
5869 enabled libpulse          && require_pkg_config libpulse pulse/pulseaudio.h pa_context_new
5870 enabled librsvg           && require_pkg_config librsvg-2.0 librsvg-2.0/librsvg/rsvg.h rsvg_handle_render_cairo
5871 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
5872 enabled librubberband     && require_pkg_config "rubberband >= 1.8.1" rubberband/rubberband-c.h rubberband_new
5873 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
5874 enabled libsmbclient      && { use_pkg_config smbclient libsmbclient.h smbc_init ||
5875                                require smbclient libsmbclient.h smbc_init -lsmbclient; }
5876 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy
5877 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr && LIBSOXR="-lsoxr"
5878 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
5879 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
5880 enabled libtesseract      && require_pkg_config tesseract tesseract/capi.h TessBaseAPICreate
5881 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
5882 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
5883                              { check_lib libtwolame twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
5884                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
5885 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
5886 enabled libvidstab        && require_pkg_config "vidstab >= 0.98" vid.stab/libvidstab.h vsMotionDetectInit
5887 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
5888 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
5889
5890 enabled libvpx            && {
5891     enabled libvpx_vp8_decoder && {
5892         use_pkg_config "vpx >= 0.9.1" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
5893             check_lib libvpx_vp8_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
5894                 die "ERROR: libvpx decoder version must be >=0.9.1";
5895     }
5896     enabled libvpx_vp8_encoder && {
5897         use_pkg_config "vpx >= 0.9.7" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
5898             check_lib libvpx_vp8_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
5899                 die "ERROR: libvpx encoder version must be >=0.9.7";
5900     }
5901     enabled libvpx_vp9_decoder && {
5902         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
5903             check_lib libvpx_vp9_decoder "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx
5904     }
5905     enabled libvpx_vp9_encoder && {
5906         use_pkg_config "vpx >= 1.3.0" "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
5907             check_lib libvpx_vp9_encoder "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx VP9E_SET_AQ_MODE" -lvpx
5908     }
5909     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
5910         die "libvpx enabled but no supported decoders found"
5911     fi
5912 }
5913
5914 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
5915 enabled libwebp           && {
5916     enabled libwebp_encoder      && require_pkg_config "libwebp >= 0.2.0" webp/encode.h WebPGetEncoderVersion
5917     enabled libwebp_anim_encoder && { use_pkg_config "libwebpmux >= 0.4.0" webp/mux.h WebPAnimEncoderOptionsInit || disable libwebp_anim_encoder; } }
5918 enabled libx264           && { use_pkg_config x264 "stdint.h x264.h" x264_encoder_encode ||
5919                                { require libx264 "stdint.h x264.h" x264_encoder_encode -lx264 &&
5920                                  warn "using libx264 without pkg-config"; } } &&
5921                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
5922                                die "ERROR: libx264 must be installed and version must be >= 0.118."; } &&
5923                              { check_cpp_condition x264.h "X264_MPEG2" &&
5924                                enable libx262; }
5925 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
5926                              { check_cpp_condition x265.h "X265_BUILD >= 68" ||
5927                                die "ERROR: libx265 version must be >= 68."; }
5928 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode -lxavs
5929 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
5930 enabled libzimg           && require_pkg_config "zimg >= 2.3.0" zimg.h zimg_get_api_version
5931 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
5932 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi &&
5933                              { check_cpp_condition libzvbi.h "VBI_VERSION_MAJOR > 0 || VBI_VERSION_MINOR > 2 || VBI_VERSION_MINOR == 2 && VBI_VERSION_MICRO >= 28" ||
5934                                enabled gpl || die "ERROR: libzvbi requires version 0.2.28 or --enable-gpl."; }
5935 enabled mediacodec        && { enabled jni || die "ERROR: mediacodec requires --enable-jni"; }
5936 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
5937                                { ! enabled cross_compile &&
5938                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
5939                                  add_ldflags -L/opt/vc/lib/ &&
5940                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
5941                                die "ERROR: mmal not found" &&
5942                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
5943 enabled openal            && { { for al_extralibs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
5944                                check_lib openal 'AL/al.h' alGetError "${al_extralibs}" && break; done } ||
5945                                die "ERROR: openal not found"; } &&
5946                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
5947                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
5948 enabled opencl            && { check_lib opencl OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
5949                                check_lib opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
5950                                die "ERROR: opencl not found"; } &&
5951                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
5952                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
5953                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
5954 enabled opengl            && { check_lib opengl GL/glx.h glXGetProcAddress "-lGL" ||
5955                                check_lib opengl windows.h wglGetProcAddress "-lopengl32 -lgdi32" ||
5956                                check_lib opengl OpenGL/gl3.h glGetError "-Wl,-framework,OpenGL" ||
5957                                check_lib opengl ES2/gl.h glGetError "-isysroot=${sysroot} -Wl,-framework,OpenGLES" ||
5958                                die "ERROR: opengl not found."
5959                              }
5960 enabled omx_rpi           && { check_header OMX_Core.h ||
5961                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_header OMX_Core.h ; } ||
5962                                die "ERROR: OpenMAX IL headers not found"; }
5963 enabled omx               && { check_header OMX_Core.h || die "ERROR: OpenMAX IL headers not found"; }
5964 enabled openssl           && { use_pkg_config openssl openssl/ssl.h OPENSSL_init_ssl ||
5965                                use_pkg_config openssl openssl/ssl.h SSL_library_init ||
5966                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
5967                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
5968                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
5969                                die "ERROR: openssl not found"; }
5970 enabled qtkit_indev      && { check_header_objcc QTKit/QTKit.h || disable qtkit_indev; }
5971
5972 if enabled gcrypt; then
5973     GCRYPT_CONFIG="${cross_prefix}libgcrypt-config"
5974     if "${GCRYPT_CONFIG}" --version > /dev/null 2>&1; then
5975         gcrypt_cflags=$("${GCRYPT_CONFIG}" --cflags)
5976         gcrypt_extralibs=$("${GCRYPT_CONFIG}" --libs)
5977         check_func_headers gcrypt.h gcry_mpi_new $gcrypt_cflags $gcrypt_extralibs ||
5978             die "ERROR: gcrypt not found"
5979         add_cflags $gcrypt_cflags && add_extralibs $gcrypt_extralibs
5980     else
5981         require gcrypt gcrypt.h gcry_mpi_new -lgcrypt
5982     fi
5983 fi
5984
5985 disabled sdl && disable sdl2
5986 if ! disabled sdl2; then
5987     SDL2_CONFIG="${cross_prefix}sdl2-config"
5988     if check_pkg_config sdl2 SDL_events.h SDL_PollEvent; then
5989         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
5990         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
5991         check_func SDL_Init $sdl2_extralibs $sdl2_cflags && enable sdl2
5992     else
5993       if "${SDL2_CONFIG}" --version > /dev/null 2>&1; then
5994         sdl2_cflags=$("${SDL2_CONFIG}" --cflags)
5995         sdl2_extralibs=$("${SDL2_CONFIG}" --libs)
5996         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x020001" $sdl2_cflags &&
5997         check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x020100" $sdl2_cflags &&
5998         check_func SDL_Init $sdl2_extralibs $sdl2_cflags && enable sdl2
5999       fi
6000     fi
6001     if test $target_os = "mingw32"; then
6002         sdl2_extralibs="$sdl2_extralibs -mconsole"
6003     fi
6004 fi
6005 enabled sdl2 && enable sdl && add_cflags $sdl2_cflags && add_extralibs $sdl2_extralibs
6006
6007 if enabled decklink; then
6008     case $target_os in
6009         mingw32*|mingw64*|win32|win64)
6010             decklink_outdev_extralibs="$decklink_outdev_extralibs -lole32 -loleaut32"
6011             decklink_indev_extralibs="$decklink_indev_extralibs -lole32 -loleaut32"
6012             ;;
6013     esac
6014 fi
6015
6016 disabled securetransport || { check_func SecIdentityCreate "-Wl,-framework,CoreFoundation -Wl,-framework,Security" &&
6017     check_lib securetransport "Security/SecureTransport.h Security/Security.h" "SSLCreateContext SecItemImport" "-Wl,-framework,CoreFoundation -Wl,-framework,Security"; }
6018
6019 disabled schannel || { check_func_headers "windows.h security.h" InitializeSecurityContext -DSECURITY_WIN32 -lsecur32 &&
6020                        check_cpp_condition winerror.h "defined(SEC_I_CONTEXT_EXPIRED)" && enable schannel && add_extralibs -lsecur32; }
6021
6022 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
6023 enabled makeinfo \
6024     && [ 0$(makeinfo --version | grep "texinfo" | sed 's/.*texinfo[^0-9]*\([0-9]*\)\..*/\1/') -ge 5 ] \
6025     && enable makeinfo_html || disable makeinfo_html
6026 disabled makeinfo_html && texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
6027 perl -v            > /dev/null 2>&1 && enable perl      || disable perl
6028 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
6029 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
6030
6031 check_header linux/fb.h
6032 check_header linux/videodev.h
6033 check_header linux/videodev2.h
6034 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
6035
6036 check_header sys/videoio.h
6037 check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
6038
6039 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
6040 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
6041 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
6042 # w32api 3.12 had it defined wrong
6043 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
6044
6045 check_type "dshow.h" IBaseFilter
6046
6047 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
6048 { check_header dev/bktr/ioctl_meteor.h &&
6049   check_header dev/bktr/ioctl_bt848.h; } ||
6050 { check_header machine/ioctl_meteor.h &&
6051   check_header machine/ioctl_bt848.h; } ||
6052 { check_header dev/video/meteor/ioctl_meteor.h &&
6053   check_header dev/video/bktr/ioctl_bt848.h; } ||
6054 check_header dev/ic/bt8xx.h
6055
6056 if check_struct sys/soundcard.h audio_buf_info bytes; then
6057     enable_safe sys/soundcard.h
6058 else
6059     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
6060     #include <sys/soundcard.h>
6061     audio_buf_info abc;
6062 EOF
6063 fi
6064 check_header soundcard.h
6065
6066 enabled_any alsa_indev alsa_outdev &&
6067     check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
6068
6069 enabled jack_indev && check_lib jack jack/jack.h jack_client_open -ljack &&
6070     check_func jack_port_get_latency_range -ljack
6071
6072 enabled_any sndio_indev sndio_outdev && check_lib sndio sndio.h sio_open -lsndio
6073
6074 if enabled libcdio; then
6075     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6076     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
6077     die "ERROR: No usable libcdio/cdparanoia found"
6078 fi
6079
6080 if ! disabled libxcb; then
6081     check_pkg_config "xcb >= 1.4" xcb/xcb.h xcb_connect || {
6082         enabled libxcb && die "ERROR: libxcb >= 1.4 not found";
6083     } && enable libxcb
6084
6085 if enabled libxcb; then
6086     disabled libxcb_shm || {
6087         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
6088             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
6089         } && check_header sys/shm.h && enable libxcb_shm; }
6090
6091     disabled libxcb_xfixes || {
6092         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
6093             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
6094         } && enable libxcb_xfixes; }
6095
6096     disabled libxcb_shape || {
6097         check_pkg_config xcb-shape xcb/shape.h xcb_shape_get_rectangles || {
6098             enabled libxcb_shape && die "ERROR: libxcb_shape not found";
6099         } && enable libxcb_shape; }
6100
6101     add_cflags $xcb_cflags $xcb_shm_cflags $xcb_xfixes_cflags $xcb_shape_cflags
6102     add_extralibs $xcb_extralibs $xcb_shm_extralibs $xcb_xfixes_extralibs $xcb_shape_extralibs
6103 fi
6104 fi
6105
6106 check_func_headers "windows.h" CreateDIBSection "$gdigrab_indev_extralibs"
6107
6108 enabled dxva2api_h &&
6109     check_cc <<EOF && enable dxva2api_cobj
6110 #define _WIN32_WINNT 0x0600
6111 #define COBJMACROS
6112 #include <windows.h>
6113 #include <d3d9.h>
6114 #include <dxva2api.h>
6115 int main(void) { IDirectXVideoDecoder *o = NULL; IDirectXVideoDecoder_Release(o); return 0; }
6116 EOF
6117
6118 enabled dxva2 &&
6119     check_lib dxva2_lib windows.h CoTaskMemFree -lole32
6120
6121 enabled vaapi &&
6122     check_lib vaapi va/va.h vaInitialize -lva
6123
6124 enabled vaapi &&
6125     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
6126     disable vaapi
6127
6128 enabled vaapi &&
6129     check_lib vaapi_drm "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm
6130
6131 enabled vaapi &&
6132     check_lib vaapi_x11 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 -lX11
6133
6134 enabled vdpau &&
6135     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
6136     disable vdpau
6137
6138 enabled vdpau &&
6139     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
6140
6141 if enabled x86; then
6142     case $target_os in
6143         mingw32*|mingw64*|win32|win64|linux|cygwin*)
6144             ;;
6145         *)
6146             disable cuda cuvid nvenc
6147             ;;
6148     esac
6149 else
6150     disable cuda cuvid nvenc
6151 fi
6152
6153 enabled nvenc &&
6154     check_cc -I$source_path <<EOF || disable nvenc
6155 #include "compat/nvenc/nvEncodeAPI.h"
6156 NV_ENCODE_API_FUNCTION_LIST flist;
6157 void f(void) { struct { const GUID guid; } s[] = { { NV_ENC_PRESET_HQ_GUID } }; }
6158 int main(void) { return 0; }
6159 EOF
6160
6161 # Funny iconv installations are not unusual, so check it after all flags have been set
6162 disabled iconv || check_func_headers iconv.h iconv || check_lib iconv iconv.h iconv -liconv
6163
6164 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
6165
6166 # add some useful compiler flags if supported
6167 check_cflags -Wdeclaration-after-statement
6168 check_cflags -Wall
6169 check_cflags -Wdisabled-optimization
6170 check_cflags -Wpointer-arith
6171 check_cflags -Wredundant-decls
6172 check_cflags -Wwrite-strings
6173 check_cflags -Wtype-limits
6174 check_cflags -Wundef
6175 check_cflags -Wmissing-prototypes
6176 check_cflags -Wno-pointer-to-int-cast
6177 check_cflags -Wstrict-prototypes
6178 check_cflags -Wempty-body
6179
6180 if enabled extra_warnings; then
6181     check_cflags -Wcast-qual
6182     check_cflags -Wextra
6183     check_cflags -Wpedantic
6184 fi
6185
6186 check_disable_warning(){
6187     warning_flag=-W${1#-Wno-}
6188     test_cflags $warning_flag && add_cflags $1
6189 }
6190
6191 check_disable_warning -Wno-parentheses
6192 check_disable_warning -Wno-switch
6193 check_disable_warning -Wno-format-zero-length
6194 check_disable_warning -Wno-pointer-sign
6195 check_disable_warning -Wno-unused-const-variable
6196
6197 check_disable_warning_headers(){
6198     warning_flag=-W${1#-Wno-}
6199     test_cflags $warning_flag && add_cflags_headers $1
6200 }
6201
6202 check_disable_warning_headers -Wno-deprecated-declarations
6203 check_disable_warning_headers -Wno-unused-variable
6204
6205 check_cc <<EOF && enable blocks_extension
6206 void (^block)(void);
6207 EOF
6208
6209 # add some linker flags
6210 check_ldflags -Wl,--warn-common
6211 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
6212 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
6213 enabled rpath && add_ldlibflags -Wl,-rpath,$libdir
6214 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
6215
6216 # add some strip flags
6217 check_stripflags -x
6218
6219 enabled neon_clobber_test &&
6220     check_ldflags -Wl,--wrap,avcodec_open2              \
6221                   -Wl,--wrap,avcodec_decode_audio4      \
6222                   -Wl,--wrap,avcodec_decode_video2      \
6223                   -Wl,--wrap,avcodec_decode_subtitle2   \
6224                   -Wl,--wrap,avcodec_encode_audio2      \
6225                   -Wl,--wrap,avcodec_encode_video2      \
6226                   -Wl,--wrap,avcodec_encode_subtitle    \
6227                   -Wl,--wrap,avcodec_send_packet        \
6228                   -Wl,--wrap,avcodec_receive_packet     \
6229                   -Wl,--wrap,avcodec_send_frame         \
6230                   -Wl,--wrap,avcodec_receive_frame      \
6231                   -Wl,--wrap,swr_convert                \
6232                   -Wl,--wrap,avresample_convert ||
6233     disable neon_clobber_test
6234
6235 enabled xmm_clobber_test &&
6236     check_ldflags -Wl,--wrap,avcodec_open2              \
6237                   -Wl,--wrap,avcodec_decode_audio4      \
6238                   -Wl,--wrap,avcodec_decode_video2      \
6239                   -Wl,--wrap,avcodec_decode_subtitle2   \
6240                   -Wl,--wrap,avcodec_encode_audio2      \
6241                   -Wl,--wrap,avcodec_encode_video2      \
6242                   -Wl,--wrap,avcodec_encode_subtitle    \
6243                   -Wl,--wrap,avcodec_send_packet        \
6244                   -Wl,--wrap,avcodec_receive_packet     \
6245                   -Wl,--wrap,avcodec_send_frame         \
6246                   -Wl,--wrap,avcodec_receive_frame      \
6247                   -Wl,--wrap,swr_convert                \
6248                   -Wl,--wrap,avresample_convert         \
6249                   -Wl,--wrap,sws_scale ||
6250     disable xmm_clobber_test
6251
6252 check_ld "cc" <<EOF && enable proper_dce
6253 extern const int array[512];
6254 static inline int func(void) { return array[0]; }
6255 int main(void) { return 0; }
6256 EOF
6257
6258 if enabled proper_dce; then
6259     echo "X { local: *; };" > $TMPV
6260     if test_ldflags -Wl,${version_script},$TMPV; then
6261         append SHFLAGS '-Wl,${version_script},\$(SUBDIR)lib\$(NAME).ver'
6262         check_cc <<EOF && enable symver_asm_label
6263 void ff_foo(void) __asm__ ("av_foo@VERSION");
6264 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
6265 EOF
6266         check_cc <<EOF && enable symver_gnu_asm
6267 __asm__(".symver ff_foo,av_foo@VERSION");
6268 void ff_foo(void) {}
6269 EOF
6270     fi
6271 fi
6272
6273 if [ -z "$optflags" ]; then
6274     if enabled small; then
6275         optflags=$cflags_size
6276     elif enabled optimizations; then
6277         optflags=$cflags_speed
6278     else
6279         optflags=$cflags_noopt
6280     fi
6281 fi
6282
6283 if [ -z "$nvccflags" ]; then
6284     nvccflags=$nvccflags_default
6285 fi
6286
6287 if enabled x86_64 || enabled ppc64 || enabled aarch64; then
6288     nvccflags="$nvccflags -m64"
6289 else
6290     nvccflags="$nvccflags -m32"
6291 fi
6292
6293 check_optflags(){
6294     check_cflags "$@"
6295     enabled lto && check_ldflags "$@"
6296 }
6297
6298 check_optflags $optflags
6299 check_optflags -fno-math-errno
6300 check_optflags -fno-signed-zeros
6301
6302 if enabled lto; then
6303     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
6304     check_cflags  -flto
6305     check_ldflags -flto $cpuflags
6306     disable inline_asm_direct_symbol_refs
6307 fi
6308
6309 enabled ftrapv && check_cflags -ftrapv
6310
6311 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
6312 int x;
6313 EOF
6314
6315
6316 if enabled icc; then
6317     # Just warnings, no remarks
6318     check_cflags -w1
6319     # -wd: Disable following warnings
6320     # 144, 167, 556: -Wno-pointer-sign
6321     # 188: enumerated type mixed with another type
6322     # 1292: attribute "foo" ignored
6323     # 1419: external declaration in primary source file
6324     # 10006: ignoring unknown option -fno-signed-zeros
6325     # 10148: ignoring unknown option -Wno-parentheses
6326     # 10156: ignoring option '-W'; no argument required
6327     # 13200: No EMMS instruction before call to function
6328     # 13203: No EMMS instruction before return from function
6329     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156,13200,13203
6330     # 11030: Warning unknown option --as-needed
6331     # 10156: ignoring option '-export'; no argument required
6332     check_ldflags -wd10156,11030
6333     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
6334     enable ebp_available
6335     # The test above does not test linking
6336     enabled lto && disable symver_asm_label
6337     if enabled x86_32; then
6338         icc_version=$($cc -dumpversion)
6339         test ${icc_version%%.*} -ge 11 &&
6340             check_cflags -falign-stack=maintain-16-byte ||
6341             disable aligned_stack
6342     fi
6343 elif enabled ccc; then
6344     # disable some annoying warnings
6345     add_cflags -msg_disable bitnotint
6346     add_cflags -msg_disable mixfuncvoid
6347     add_cflags -msg_disable nonstandcast
6348     add_cflags -msg_disable unsupieee
6349 elif enabled gcc; then
6350     check_optflags -fno-tree-vectorize
6351     check_cflags -Werror=format-security
6352     check_cflags -Werror=implicit-function-declaration
6353     check_cflags -Werror=missing-prototypes
6354     check_cflags -Werror=return-type
6355     check_cflags -Werror=vla
6356     check_cflags -Wformat
6357     check_cflags -fdiagnostics-color=auto
6358     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
6359 elif enabled llvm_gcc; then
6360     check_cflags -mllvm -stack-alignment=16
6361 elif enabled clang; then
6362     check_cflags -mllvm -stack-alignment=16
6363     check_cflags -mstack-alignment=16
6364     check_cflags -Qunused-arguments
6365     check_cflags -Werror=implicit-function-declaration
6366     check_cflags -Werror=missing-prototypes
6367     check_cflags -Werror=return-type
6368 elif enabled cparser; then
6369     add_cflags -Wno-missing-variable-declarations
6370     add_cflags -Wno-empty-statement
6371 elif enabled armcc; then
6372     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
6373     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
6374     # 2523: use of inline assembly is deprecated
6375     add_cflags -W${armcc_opt},--diag_suppress=2523
6376     add_cflags -W${armcc_opt},--diag_suppress=1207
6377     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
6378     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
6379     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
6380     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
6381 elif enabled tms470; then
6382     add_cflags -pds=824 -pds=837
6383     disable inline_asm
6384 elif enabled pathscale; then
6385     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
6386 elif enabled_any msvc icl; then
6387     enabled x86_32 && disable aligned_stack
6388     enabled_all x86_32 debug && add_cflags -Oy-
6389     enabled debug && add_ldflags -debug
6390     enable pragma_deprecated
6391     if enabled icl; then
6392         # -Qansi-alias is basically -fstrict-aliasing, but does not work
6393         # (correctly) on icl 13.x.
6394         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
6395             add_cflags -Qansi-alias
6396         # Some inline asm is not compilable in debug
6397         if enabled debug; then
6398             disable ebp_available
6399             disable ebx_available
6400         fi
6401     fi
6402     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
6403     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
6404     # The CRT headers contain __declspec(restrict) in a few places, but if redefining
6405     # restrict, this might break. MSVC 2010 and 2012 fail with __declspec(__restrict)
6406     # (as it ends up if the restrict redefine is done before including stdlib.h), while
6407     # MSVC 2013 and newer can handle it fine.
6408     # If this declspec fails, force including stdlib.h before the restrict redefinition
6409     # happens in config.h.
6410     if [ $_restrict != restrict ]; then
6411         check_cc <<EOF || add_cflags -FIstdlib.h
6412 __declspec($_restrict) void* foo(int);
6413 EOF
6414     fi
6415     # the new SSA optimzer in VS2015 U3 is mis-optimizing some parts of the code
6416     # Issue has been fixed in MSVC v19.00.24218.
6417     check_cpp_condition windows.h "_MSC_FULL_VER >= 190024218" ||
6418         check_cflags -d2SSAOptimizer-
6419     # enable utf-8 source processing on VS2015 U2 and newer
6420     check_cpp_condition windows.h "_MSC_FULL_VER >= 190023918" &&
6421         add_cflags -utf-8
6422 fi
6423
6424 for pfx in "" host_; do
6425     varname=${pfx%_}cc_type
6426     eval "type=\$$varname"
6427     if [ "$type" = "msvc" ]; then
6428         check_${pfx}cc <<EOF || add_${pfx}cflags -Dinline=__inline
6429 static inline int foo(int a) { return a; }
6430 EOF
6431     fi
6432 done
6433
6434 case $as_type in
6435     clang)
6436         add_asflags -Qunused-arguments
6437     ;;
6438 esac
6439
6440 case $ld_type in
6441     clang)
6442         check_ldflags -Qunused-arguments
6443     ;;
6444 esac
6445
6446 case $target_os in
6447     osf1)
6448         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
6449     ;;
6450 esac
6451
6452 enable frame_thread_encoder
6453
6454 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
6455
6456 check_deps $CONFIG_LIST       \
6457            $CONFIG_EXTRA      \
6458            $HAVE_LIST         \
6459            $ALL_COMPONENTS    \
6460
6461 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"
6462
6463
6464 if test $target_os = "haiku"; then
6465     disable memalign
6466     disable posix_memalign
6467 fi
6468
6469 # add_dep lib dep
6470 # -> enable ${lib}_deps_${dep}
6471 # -> add $dep to ${lib}_deps only once
6472 add_dep() {
6473     lib=$1
6474     dep=$2
6475     enabled "${lib}_deps_${dep}" && return 0
6476     enable  "${lib}_deps_${dep}"
6477     prepend "${lib}_deps" $dep
6478 }
6479
6480 # merge deps lib components
6481 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
6482 merge_deps() {
6483     lib=$1
6484     shift
6485     for comp in $*; do
6486         enabled $comp || continue
6487         eval "dep=\"\$${comp}_deps\""
6488         for d in $dep; do
6489             add_dep $lib $d
6490         done
6491     done
6492 }
6493
6494 merge_deps libavfilter $FILTER_LIST
6495
6496 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
6497
6498 for thread in $THREADS_LIST; do
6499     if enabled $thread; then
6500         test -n "$thread_type" &&
6501             die "ERROR: Only one thread type must be selected." ||
6502             thread_type="$thread"
6503     fi
6504 done
6505
6506 if disabled stdatomic_h; then
6507     if enabled atomics_gcc; then
6508         add_cppflags '-I\$(SRC_PATH)/compat/atomics/gcc'
6509     elif enabled atomics_win32; then
6510         add_cppflags '-I\$(SRC_PATH)/compat/atomics/win32'
6511     elif enabled atomics_suncc; then
6512         add_cppflags '-I\$(SRC_PATH)/compat/atomics/suncc'
6513     elif enabled pthreads; then
6514         add_compat atomics/pthread/stdatomic.o
6515         add_cppflags '-I\$(SRC_PATH)/compat/atomics/pthread'
6516     else
6517         enabled threads && die "Threading is enabled, but no atomics are available"
6518         add_cppflags '-I\$(SRC_PATH)/compat/atomics/dummy'
6519     fi
6520 fi
6521
6522 # Check if requested libraries were found.
6523 for lib in $AUTODETECT_LIBS; do
6524     requested $lib && ! enabled $lib && die "ERROR: $lib requested but not found";
6525 done
6526
6527 enabled zlib && add_cppflags -DZLIB_CONST
6528
6529 # conditional library dependencies, in linking order
6530 enabled afftfilt_filter     && prepend avfilter_deps "avcodec"
6531 enabled afir_filter         && prepend avfilter_deps "avcodec"
6532 enabled amovie_filter       && prepend avfilter_deps "avformat avcodec"
6533 enabled aresample_filter    && prepend avfilter_deps "swresample"
6534 enabled atempo_filter       && prepend avfilter_deps "avcodec"
6535 enabled cover_rect_filter   && prepend avfilter_deps "avformat avcodec"
6536 enabled ebur128_filter && enabled swresample && prepend avfilter_deps "swresample"
6537 enabled elbg_filter         && prepend avfilter_deps "avcodec"
6538 enabled fftfilt_filter      && prepend avfilter_deps "avcodec"
6539 enabled find_rect_filter    && prepend avfilter_deps "avformat avcodec"
6540 enabled firequalizer_filter && prepend avfilter_deps "avcodec"
6541 enabled mcdeint_filter      && prepend avfilter_deps "avcodec"
6542 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
6543 enabled pan_filter          && prepend avfilter_deps "swresample"
6544 enabled pp_filter           && prepend avfilter_deps "postproc"
6545 enabled removelogo_filter   && prepend avfilter_deps "avformat avcodec swscale"
6546 enabled resample_filter && prepend avfilter_deps "avresample"
6547 enabled sab_filter          && prepend avfilter_deps "swscale"
6548 enabled scale_filter    && prepend avfilter_deps "swscale"
6549 enabled scale2ref_filter    && prepend avfilter_deps "swscale"
6550 enabled sofalizer_filter    && prepend avfilter_deps "avcodec"
6551 enabled showcqt_filter      && prepend avfilter_deps "avformat avcodec swscale"
6552 enabled showfreqs_filter    && prepend avfilter_deps "avcodec"
6553 enabled showspectrum_filter && prepend avfilter_deps "avcodec"
6554 enabled signature_filter    && prepend avfilter_deps "avcodec avformat"
6555 enabled smartblur_filter    && prepend avfilter_deps "swscale"
6556 enabled spectrumsynth_filter && prepend avfilter_deps "avcodec"
6557 enabled spp_filter          && prepend avfilter_deps "avcodec"
6558 enabled subtitles_filter    && prepend avfilter_deps "avformat avcodec"
6559 enabled uspp_filter         && prepend avfilter_deps "avcodec"
6560 enabled zoompan_filter      && prepend avfilter_deps "swscale"
6561
6562 enabled lavfi_indev         && prepend avdevice_deps "avfilter"
6563
6564 enabled opus_decoder    && prepend avcodec_deps "swresample"
6565
6566 expand_deps(){
6567     lib_deps=${1}_deps
6568     eval "deps=\$$lib_deps"
6569     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
6570     unique $lib_deps
6571 }
6572
6573 #we have to remove gpl from the deps here as some code assumes all lib deps are libs
6574 postproc_deps="$(filter_out 'gpl' $postproc_deps)"
6575
6576 map 'expand_deps $v' $LIBRARY_LIST
6577
6578 license="LGPL version 2.1 or later"
6579 if enabled nonfree; then
6580     license="nonfree and unredistributable"
6581 elif enabled gplv3; then
6582     license="GPL version 3 or later"
6583 elif enabled lgplv3; then
6584     license="LGPL version 3 or later"
6585 elif enabled gpl; then
6586     license="GPL version 2 or later"
6587 fi
6588
6589 if test "$quiet" != "yes"; then
6590
6591 echo "install prefix            $prefix"
6592 echo "source path               $source_path"
6593 echo "C compiler                $cc"
6594 echo "C library                 $libc_type"
6595 if test "$host_cc" != "$cc"; then
6596     echo "host C compiler           $host_cc"
6597     echo "host C library            $host_libc_type"
6598 fi
6599 echo "ARCH                      $arch ($cpu)"
6600 if test "$build_suffix" != ""; then
6601     echo "build suffix              $build_suffix"
6602 fi
6603 if test "$progs_suffix" != ""; then
6604     echo "progs suffix              $progs_suffix"
6605 fi
6606 if test "$extra_version" != ""; then
6607     echo "version string suffix     $extra_version"
6608 fi
6609 echo "big-endian                ${bigendian-no}"
6610 echo "runtime cpu detection     ${runtime_cpudetect-no}"
6611 if enabled x86; then
6612     echo "standalone assembly       ${x86asm-no}"
6613     echo "x86 assembler             ${x86asmexe}"
6614     echo "MMX enabled               ${mmx-no}"
6615     echo "MMXEXT enabled            ${mmxext-no}"
6616     echo "3DNow! enabled            ${amd3dnow-no}"
6617     echo "3DNow! extended enabled   ${amd3dnowext-no}"
6618     echo "SSE enabled               ${sse-no}"
6619     echo "SSSE3 enabled             ${ssse3-no}"
6620     echo "AESNI enabled             ${aesni-no}"
6621     echo "AVX enabled               ${avx-no}"
6622     echo "XOP enabled               ${xop-no}"
6623     echo "FMA3 enabled              ${fma3-no}"
6624     echo "FMA4 enabled              ${fma4-no}"
6625     echo "i686 features enabled     ${i686-no}"
6626     echo "CMOV is fast              ${fast_cmov-no}"
6627     echo "EBX available             ${ebx_available-no}"
6628     echo "EBP available             ${ebp_available-no}"
6629 fi
6630 if enabled aarch64; then
6631     echo "NEON enabled              ${neon-no}"
6632     echo "VFP enabled               ${vfp-no}"
6633 fi
6634 if enabled arm; then
6635     echo "ARMv5TE enabled           ${armv5te-no}"
6636     echo "ARMv6 enabled             ${armv6-no}"
6637     echo "ARMv6T2 enabled           ${armv6t2-no}"
6638     echo "VFP enabled               ${vfp-no}"
6639     echo "NEON enabled              ${neon-no}"
6640     echo "THUMB enabled             ${thumb-no}"
6641 fi
6642 if enabled mips; then
6643     echo "MIPS FPU enabled          ${mipsfpu-no}"
6644     echo "MIPS DSP R1 enabled       ${mipsdsp-no}"
6645     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
6646     echo "MIPS MSA enabled          ${msa-no}"
6647     echo "LOONGSON MMI enabled      ${mmi-no}"
6648 fi
6649 if enabled ppc; then
6650     echo "AltiVec enabled           ${altivec-no}"
6651     echo "VSX enabled               ${vsx-no}"
6652     echo "POWER8 enabled            ${power8-no}"
6653     echo "PPC 4xx optimizations     ${ppc4xx-no}"
6654     echo "dcbzl available           ${dcbzl-no}"
6655 fi
6656 echo "debug symbols             ${debug-no}"
6657 echo "strip symbols             ${stripping-no}"
6658 echo "optimize for size         ${small-no}"
6659 echo "optimizations             ${optimizations-no}"
6660 echo "static                    ${static-no}"
6661 echo "shared                    ${shared-no}"
6662 echo "postprocessing support    ${postproc-no}"
6663 echo "network support           ${network-no}"
6664 echo "threading support         ${thread_type-no}"
6665 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
6666 echo "texi2html enabled         ${texi2html-no}"
6667 echo "perl enabled              ${perl-no}"
6668 echo "pod2man enabled           ${pod2man-no}"
6669 echo "makeinfo enabled          ${makeinfo-no}"
6670 echo "makeinfo supports HTML    ${makeinfo_html-no}"
6671 test -n "$random_seed" &&
6672     echo "random seed               ${random_seed}"
6673 echo
6674
6675 echo "External libraries:"
6676 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_in_columns
6677 echo
6678
6679 echo "External libraries providing hardware acceleration:"
6680 print_enabled '' $HWACCEL_LIBRARY_LIST | print_in_columns
6681 echo
6682
6683 echo "Libraries:"
6684 print_enabled '' $LIBRARY_LIST | print_in_columns
6685 echo
6686
6687 echo "Programs:"
6688 print_enabled '' $PROGRAM_LIST | print_in_columns
6689 echo
6690
6691 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
6692     echo "Enabled ${type}s:"
6693     eval list=\$$(toupper $type)_LIST
6694     print_enabled '_*' $list | print_in_columns
6695     echo
6696 done
6697
6698 if test -n "$ignore_tests"; then
6699     ignore_tests=$(echo $ignore_tests | tr ',' ' ')
6700     echo "Ignored FATE tests:"
6701     echo $ignore_tests | print_in_columns
6702     echo
6703 fi
6704
6705 echo "License: $license"
6706
6707 echo "Creating configuration files ..."
6708
6709 fi # test "$quiet" != "yes"
6710
6711 test -e Makefile || echo "include $source_path/Makefile" > Makefile
6712
6713 enabled stripping || strip="echo skipping strip"
6714
6715 config_files="$TMPH ffbuild/config.mak doc/config.texi"
6716
6717 cat > ffbuild/config.mak <<EOF
6718 # Automatically generated by configure - do not modify!
6719 ifndef FFMPEG_CONFIG_MAK
6720 FFMPEG_CONFIG_MAK=1
6721 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
6722 prefix=$prefix
6723 LIBDIR=\$(DESTDIR)$libdir
6724 SHLIBDIR=\$(DESTDIR)$shlibdir
6725 INCDIR=\$(DESTDIR)$incdir
6726 BINDIR=\$(DESTDIR)$bindir
6727 DATADIR=\$(DESTDIR)$datadir
6728 DOCDIR=\$(DESTDIR)$docdir
6729 MANDIR=\$(DESTDIR)$mandir
6730 PKGCONFIGDIR=\$(DESTDIR)$pkgconfigdir
6731 INSTALL_NAME_DIR=$install_name_dir
6732 SRC_PATH=$source_path
6733 SRC_LINK=$source_link
6734 ifndef MAIN_MAKEFILE
6735 SRC_PATH:=\$(SRC_PATH:.%=..%)
6736 endif
6737 CC_IDENT=$cc_ident
6738 ARCH=$arch
6739 INTRINSICS=$intrinsics
6740 CC=$cc
6741 CXX=$cxx
6742 AS=$as
6743 OBJCC=$objcc
6744 LD=$ld
6745 DEPCC=$dep_cc
6746 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
6747 DEPAS=$as
6748 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
6749 X86ASM=$x86asmexe
6750 DEPX86ASM=$x86asmexe
6751 DEPX86ASMFLAGS=\$(X86ASMFLAGS)
6752 AR=$ar
6753 ARFLAGS=$arflags
6754 AR_O=$ar_o
6755 RANLIB=$ranlib
6756 STRIP=$strip
6757 NVCC=$nvcc
6758 CP=cp -p
6759 LN_S=$ln_s
6760 CPPFLAGS=$CPPFLAGS
6761 CFLAGS=$CFLAGS
6762 CXXFLAGS=$CXXFLAGS
6763 OBJCFLAGS=$OBJCFLAGS
6764 ASFLAGS=$ASFLAGS
6765 NVCCFLAGS=$nvccflags
6766 AS_C=$AS_C
6767 AS_O=$AS_O
6768 OBJCC_C=$OBJCC_C
6769 OBJCC_E=$OBJCC_E
6770 OBJCC_O=$OBJCC_O
6771 CC_C=$CC_C
6772 CC_E=$CC_E
6773 CC_O=$CC_O
6774 CXX_C=$CXX_C
6775 CXX_O=$CXX_O
6776 NVCC_C=$NVCC_C
6777 NVCC_O=$NVCC_O
6778 LD_O=$LD_O
6779 X86ASM_O=$X86ASM_O
6780 LD_LIB=$LD_LIB
6781 LD_PATH=$LD_PATH
6782 DLLTOOL=$dlltool
6783 WINDRES=$windres
6784 DEPWINDRES=$dep_cc
6785 DOXYGEN=$doxygen
6786 LDFLAGS=$LDFLAGS
6787 LDEXEFLAGS=$LDEXEFLAGS
6788 LDLIBFLAGS=$LDLIBFLAGS
6789 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
6790 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
6791 X86ASMFLAGS=$X86ASMFLAGS
6792 BUILDSUF=$build_suffix
6793 PROGSSUF=$progs_suffix
6794 FULLNAME=$FULLNAME
6795 LIBPREF=$LIBPREF
6796 LIBSUF=$LIBSUF
6797 LIBNAME=$LIBNAME
6798 SLIBPREF=$SLIBPREF
6799 SLIBSUF=$SLIBSUF
6800 EXESUF=$EXESUF
6801 EXTRA_VERSION=$extra_version
6802 CCDEP=$CCDEP
6803 CXXDEP=$CXXDEP
6804 CCDEP_FLAGS=$CCDEP_FLAGS
6805 ASDEP=$ASDEP
6806 ASDEP_FLAGS=$ASDEP_FLAGS
6807 X86ASMDEP=$X86ASMDEP
6808 X86ASMDEP_FLAGS=$X86ASMDEP_FLAGS
6809 CC_DEPFLAGS=$CC_DEPFLAGS
6810 AS_DEPFLAGS=$AS_DEPFLAGS
6811 X86ASM_DEPFLAGS=$X86ASM_DEPFLAGS
6812 HOSTCC=$host_cc
6813 HOSTLD=$host_ld
6814 HOSTCFLAGS=$host_cflags
6815 HOSTCPPFLAGS=$host_cppflags
6816 HOSTEXESUF=$HOSTEXESUF
6817 HOSTLDFLAGS=$host_ldflags
6818 HOSTEXTRALIBS=$host_extralibs
6819 DEPHOSTCC=$host_cc
6820 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
6821 HOSTCCDEP=$HOSTCCDEP
6822 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
6823 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
6824 HOSTCC_C=$HOSTCC_C
6825 HOSTCC_O=$HOSTCC_O
6826 HOSTLD_O=$HOSTLD_O
6827 TARGET_EXEC=$target_exec $target_exec_args
6828 TARGET_PATH=$target_path
6829 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
6830 CFLAGS-ffplay=${sdl2_cflags}
6831 CFLAGS_HEADERS=$CFLAGS_HEADERS
6832 ZLIB=$($ldflags_filter -lz)
6833 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
6834 EXTRALIBS=$extralibs
6835 COMPAT_OBJS=$compat_objs
6836 INSTALL=$install
6837 LIBTARGET=${LIBTARGET}
6838 SLIBNAME=${SLIBNAME}
6839 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
6840 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
6841 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
6842 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
6843 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
6844 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
6845 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
6846 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
6847 VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
6848 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
6849 NOREDZONE_FLAGS=$noredzone_flags
6850 LIBFUZZER_PATH=$libfuzzer_path
6851 IGNORE_TESTS=$ignore_tests
6852 EOF
6853
6854 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> ffbuild/config.mak' $LIBRARY_LIST
6855
6856 print_program_extralibs(){
6857     eval "program_extralibs=\$${1}_extralibs"
6858     eval echo "EXTRALIBS-${1}=${program_extralibs}" >> ffbuild/config.mak
6859 }
6860
6861 map 'print_program_extralibs $v' $PROGRAM_LIST
6862
6863 cat > $TMPH <<EOF
6864 /* Automatically generated by configure - do not modify! */
6865 #ifndef FFMPEG_CONFIG_H
6866 #define FFMPEG_CONFIG_H
6867 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
6868 #define FFMPEG_LICENSE "$(c_escape $license)"
6869 #define CONFIG_THIS_YEAR 2017
6870 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
6871 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
6872 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
6873 #define av_restrict $_restrict
6874 #define EXTERN_PREFIX "${extern_prefix}"
6875 #define EXTERN_ASM ${extern_prefix}
6876 #define BUILDSUF "$build_suffix"
6877 #define SLIBSUF "$SLIBSUF"
6878 #define HAVE_MMX2 HAVE_MMXEXT
6879 #define SWS_MAX_FILTER_SIZE $sws_max_filter_size
6880 EOF
6881
6882 test -n "$assert_level" &&
6883     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
6884
6885 test -n "$malloc_prefix" &&
6886     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
6887
6888 if enabled x86asm; then
6889     append config_files $TMPASM
6890     printf '' >$TMPASM
6891 fi
6892
6893 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
6894
6895
6896 mkdir -p doc
6897 mkdir -p tests
6898 mkdir -p tests/api
6899 echo "@c auto-generated by configure - do not modify! " > doc/config.texi
6900
6901 print_config ARCH_   "$config_files" $ARCH_LIST
6902 print_config HAVE_   "$config_files" $HAVE_LIST
6903 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
6904                                      $CONFIG_EXTRA      \
6905                                      $ALL_COMPONENTS    \
6906
6907 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
6908 echo "endif # FFMPEG_CONFIG_MAK" >> ffbuild/config.mak
6909
6910 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
6911 cp_if_changed $TMPH config.h
6912 touch ffbuild/.config
6913
6914 enabled x86asm && cp_if_changed $TMPASM config.asm
6915
6916 cat > $TMPH <<EOF
6917 /* Generated by ffconf */
6918 #ifndef AVUTIL_AVCONFIG_H
6919 #define AVUTIL_AVCONFIG_H
6920 EOF
6921
6922 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
6923
6924 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
6925
6926 cp_if_changed $TMPH libavutil/avconfig.h
6927
6928 # generate the lists of enabled components
6929 print_enabled_components(){
6930     file=$1
6931     struct_name=$2
6932     name=$3
6933     shift 3
6934     echo "static const $struct_name *$name[] = {" > $TMPH
6935     for c in $*; do
6936         enabled $c && printf "    &ff_%s,\n" $c >> $TMPH
6937     done
6938     echo "    NULL };" >> $TMPH
6939     cp_if_changed $TMPH $file
6940 }
6941
6942 print_enabled_components libavcodec/bsf_list.c AVBitStreamFilter bitstream_filters $BSF_LIST
6943 print_enabled_components libavformat/protocol_list.c URLProtocol url_protocols $PROTOCOL_LIST
6944
6945 if test -n "$WARNINGS"; then
6946     printf "\n%s%s$WARNINGS%s" "$warn_color" "$bold_color" "$reset_color"
6947     enabled fatal_warnings && exit 1
6948 fi
6949
6950 # Settings for pkg-config files
6951
6952 cat > ffbuild/config.sh <<EOF
6953 # Automatically generated by configure - do not modify!
6954 shared=$shared
6955 build_suffix=$build_suffix
6956 prefix=$prefix
6957 libdir=$libdir
6958 incdir=$incdir
6959 rpath=$(enabled rpath && echo "-Wl,-rpath,\${libdir}")
6960 source_path=${source_path}
6961 LIBPREF=${LIBPREF}
6962 LIBSUF=${LIBSUF}
6963
6964 extralibs_avutil="$LIBRT $LIBM"
6965 extralibs_avcodec="$extralibs"
6966 extralibs_avformat="$extralibs"
6967 extralibs_avdevice="$extralibs"
6968 extralibs_avfilter="$extralibs"
6969 extralibs_avresample="$LIBM"
6970 extralibs_postproc=""
6971 extralibs_swscale="$LIBM"
6972 extralibs_swresample="$LIBM $LIBSOXR"
6973 EOF
6974
6975 for lib in $LIBRARY_LIST; do
6976     lib_deps="$(eval echo \$${lib}_deps)"
6977     echo ${lib}_deps=\"$lib_deps\" >> ffbuild/config.sh
6978 done