| $ ./configure --help Usage: configure [options] Options: [defaults in brackets after descriptions] 
 Help options:   --help                   print this message   --list-decoders          show all available decoders   --list-encoders          show all available encoders   --list-hwaccels          show all available hardware accelerators   --list-demuxers          show all available demuxers   --list-muxers            show all available muxers   --list-parsers           show all available parsers   --list-protocols         show all available protocols   --list-bsfs              show all available bitstream filters   --list-indevs            show all available input devices   --list-outdevs           show all available output devices   --list-filters           show all available filters 
 Standard options:   --logfile=FILE           log tests and output to FILE [config.log]   --disable-logging        do not log configure debug information   --prefix=PREFIX          install in PREFIX []   --bindir=DIR             install binaries in DIR [PREFIX/bin]   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]   --libdir=DIR             install libs in DIR [PREFIX/lib]   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]   --incdir=DIR             install includes in DIR [PREFIX/include]   --mandir=DIR             install man page in DIR [PREFIX/share/man] 
 Licensing options:   --enable-gpl             allow use of GPL code, the resulting libs                            and binaries will be under GPL [no]   --enable-version3        upgrade (L)GPL to version 3 [no]   --enable-nonfree         allow use of nonfree code, the resulting libs                            and binaries will be unredistributable [no] 
 Configuration options:   --disable-static         do not build static libraries [no]   --enable-shared          build shared libraries [no]   --enable-small           optimize for size instead of speed   --enable-runtime-cpudetect detect cpu capabilities at runtime (bigger binary)   --enable-gray            enable full grayscale support (slower color)   --disable-swscale-alpha  disable alpha channel support in swscale 
 Component options:   --disable-doc            do not build documentation   --disable-ffmpeg         disable ffmpeg build   --disable-ffplay         disable ffplay build   --disable-ffprobe        disable ffprobe build   --disable-ffserver       disable ffserver build   --disable-avdevice       disable libavdevice build   --disable-avcodec        disable libavcodec build   --disable-avformat       disable libavformat build   --disable-swresample     disable libswresample build   --disable-swscale        disable libswscale build   --disable-postproc       disable libpostproc build   --disable-avfilter       disable video filter support [no]   --enable-avresample      enable libavresample build [no]   --disable-pthreads       disable pthreads [auto]   --disable-w32threads     disable Win32 threads [auto]   --disable-os2threads     disable OS/2 threads [auto]   --enable-x11grab         enable X11 grabbing [no]   --disable-network        disable network support [no]   --disable-dct            disable DCT code   --disable-mdct           disable MDCT code   --disable-rdft           disable RDFT code   --disable-fft            disable FFT code   --enable-dxva2           enable DXVA2 code   --enable-vaapi           enable VAAPI code [autodetect]   --enable-vda             enable VDA code   [autodetect]   --enable-vdpau           enable VDPAU code [autodetect] 
 Individual component options:   --disable-everything     disable all components listed below   --disable-encoder=NAME   disable encoder NAME   --enable-encoder=NAME    enable encoder NAME   --disable-encoders       disable all encoders   --disable-decoder=NAME   disable decoder NAME   --enable-decoder=NAME    enable decoder NAME   --disable-decoders       disable all decoders   --disable-hwaccel=NAME   disable hwaccel NAME   --enable-hwaccel=NAME    enable hwaccel NAME   --disable-hwaccels       disable all hwaccels   --disable-muxer=NAME     disable muxer NAME   --enable-muxer=NAME      enable muxer NAME   --disable-muxers         disable all muxers   --disable-demuxer=NAME   disable demuxer NAME   --enable-demuxer=NAME    enable demuxer NAME   --disable-demuxers       disable all demuxers   --enable-parser=NAME     enable parser NAME   --disable-parser=NAME    disable parser NAME   --disable-parsers        disable all parsers   --enable-bsf=NAME        enable bitstream filter NAME   --disable-bsf=NAME       disable bitstream filter NAME   --disable-bsfs           disable all bitstream filters   --enable-protocol=NAME   enable protocol NAME   --disable-protocol=NAME  disable protocol NAME   --disable-protocols      disable all protocols   --enable-indev=NAME      enable input device NAME   --disable-indev=NAME     disable input device NAME   --disable-indevs         disable input devices   --enable-outdev=NAME     enable output device NAME   --disable-outdev=NAME    disable output device NAME   --disable-outdevs        disable output devices   --disable-devices        disable all devices   --enable-filter=NAME     enable filter NAME   --disable-filter=NAME    disable filter NAME   --disable-filters        disable all filters 
 External library support:   --enable-avisynth        enable reading of AVISynth script files [no]   --enable-bzlib           enable bzlib [autodetect]   --enable-fontconfig      enable fontconfig   --enable-frei0r          enable frei0r video filtering   --enable-gnutls          enable gnutls [no]   --enable-libaacplus      enable AAC+ encoding via libaacplus [no]   --enable-libass          enable libass subtitles rendering [no]   --enable-libbluray       enable BluRay reading using libbluray [no]   --enable-libcelt         enable CELT decoding via libcelt [no]   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]   --enable-libopencv       enable video filtering via libopencv [no]   --enable-libcdio         enable audio CD grabbing with libcdio   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394                            and libraw1394 [no]   --enable-libfaac         enable FAAC support via libfaac [no]   --enable-libfreetype     enable libfreetype [no]   --enable-libgsm          enable GSM support via libgsm [no]   --enable-libmodplug      enable ModPlug via libmodplug [no]   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]   --enable-libnut          enable NUT (de)muxing via libnut,                            native (de)muxer exists [no]   --enable-libopenjpeg     enable JPEG 2000 encoding/decoding via OpenJPEG [no]   --enable-libpulse        enable Pulseaudio input via libpulse [no]   --enable-librtmp         enable RTMP[E] support via librtmp [no]   --enable-libschroedinger enable Dirac support via libschroedinger [no]   --enable-libspeex        enable Speex support via libspeex [no]   --enable-libstagefright-h264  enable H.264 decoding via libstagefright [no]   --enable-libtheora       enable Theora encoding via libtheora [no]   --enable-libutvideo      enable Ut Video encoding and decoding via libutvideo [no]   --enable-libv4l2         enable libv4l2/v4l-utils [no]   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,                            native implementation exists [no]   --enable-libvpx          enable VP8 support via libvpx [no]   --enable-libx264         enable H.264 encoding via x264 [no]   --enable-libxavs         enable AVS encoding via xavs [no]   --enable-libxvid         enable Xvid encoding via xvidcore,                            native MPEG-4/Xvid encoder exists [no]   --enable-openal          enable OpenAL 1.1 capture support [no]   --enable-openssl         enable openssl [no]   --enable-zlib            enable zlib [autodetect] 
 Advanced options (experts only):   --cross-prefix=PREFIX    use PREFIX for compilation tools []   --enable-cross-compile   assume a cross-compiler is used   --sysroot=PATH           root of cross-build tree   --sysinclude=PATH        location of cross-build system headers   --target-os=OS           compiler targets OS []   --target-exec=CMD        command to run executables on target   --target-path=DIR        path to view of build directory on target   --nm=NM                  use nm tool NM [nm]   --ar=AR                  use archive tool AR [ar]   --as=AS                  use assembler AS []   --yasmexe=EXE            use yasm-compatible assembler EXE [yasm]   --cc=CC                  use C compiler CC [gcc]   --cxx=CXX                use C compiler CXX [g++]   --ld=LD                  use linker LD []   --host-cc=HOSTCC         use host C compiler HOSTCC   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host   --host-libs=HLIBS        use libs HLIBS when linking for host   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS []   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS []   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS []   --extra-libs=ELIBS       add ELIBS []   --extra-version=STRING   version string suffix []   --optflags               override optimization-related compiler flags   --build-suffix=SUFFIX    library name suffix []   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX   --progs-suffix=SUFFIX    program name suffix []   --arch=ARCH              select architecture []   --cpu=CPU                select the minimum required CPU (affects                            instruction selection, may crash on older CPUs)   --enable-pic             build position-independent code   --enable-sram            allow use of on-chip SRAM   --disable-symver         disable symbol versioning   --disable-fastdiv        disable table-based division   --enable-hardcoded-tables use hardcoded tables instead of runtime generation   --disable-safe-bitstream-reader                            disable buffer boundary checking in bitreaders                            (faster, but may crash)   --enable-memalign-hack   emulate memalign, interferes with memory debuggers 
 Optimization options (experts only):   --disable-asm            disable all assembler optimizations   --disable-altivec        disable AltiVec optimizations   --disable-amd3dnow       disable 3DNow! optimizations   --disable-amd3dnowext    disable 3DNow! extended optimizations   --disable-mmx            disable MMX optimizations   --disable-mmx2           disable MMX2 optimizations   --disable-sse            disable SSE optimizations   --disable-ssse3          disable SSSE3 optimizations   --disable-avx            disable AVX optimizations   --disable-armv5te        disable armv5te optimizations   --disable-armv6          disable armv6 optimizations   --disable-armv6t2        disable armv6t2 optimizations   --disable-armvfp         disable ARM VFP optimizations   --disable-mmi            disable MMI optimizations   --disable-neon           disable NEON optimizations   --disable-vis            disable VIS optimizations   --disable-yasm           disable use of yasm assembler   --postproc-version=V     build libpostproc version V.                            Where V can be '51.2.101' or 'current'. [current] 
 Developer options (useful when working on FFmpeg itself):   --enable-coverage        build with test coverage instrumentation   --disable-debug          disable debugging symbols   --enable-debug=LEVEL     set the debug level []   --disable-optimizations  disable compiler optimizations   --enable-extra-warnings  enable more compiler warnings   --disable-stripping      disable stripping of executables and shared libraries   --assert-level=level     0(default), 1 or 2, amount of assertion testing,                            2 causes a slowdown at runtime.   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory                            leaks and errors, using the specified valgrind binary.                            Cannot be combined with --target-exec   --samples=PATH           location of test samples for FATE, if not set use                            $FATE_SAMPLES at make invocation time.   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;                            should be used only for debugging purposes) 
 NOTE: Object files are built at the place where configure is launched.  |