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0001 Usage: configure [options] 0002 Options: [defaults in brackets after descriptions] 0003 0004 Help options: 0005 --help print this message 0006 --quiet Suppress showing informative output 0007 --list-decoders show all available decoders 0008 --list-encoders show all available encoders 0009 --list-hwaccels show all available hardware accelerators 0010 --list-demuxers show all available demuxers 0011 --list-muxers show all available muxers 0012 --list-parsers show all available parsers 0013 --list-protocols show all available protocols 0014 --list-bsfs show all available bitstream filters 0015 --list-indevs show all available input devices 0016 --list-outdevs show all available output devices 0017 --list-filters show all available filters 0018 0019 Standard options: 0020 --logfile=FILE log tests and output to FILE [ffbuild/config.log] 0021 --disable-logging do not log configure debug information 0022 --fatal-warnings fail if any configure warning is generated 0023 --prefix=PREFIX install in PREFIX [/usr/local] 0024 --bindir=DIR install binaries in DIR [PREFIX/bin] 0025 --datadir=DIR install data files in DIR [PREFIX/share/ffmpeg] 0026 --docdir=DIR install documentation in DIR [PREFIX/share/doc/ffmpeg] 0027 --libdir=DIR install libs in DIR [PREFIX/lib] 0028 --shlibdir=DIR install shared libs in DIR [LIBDIR] 0029 --incdir=DIR install includes in DIR [PREFIX/include] 0030 --mandir=DIR install man page in DIR [PREFIX/share/man] 0031 --pkgconfigdir=DIR install pkg-config files in DIR [LIBDIR/pkgconfig] 0032 --enable-rpath use rpath to allow installing libraries in paths 0033 not part of the dynamic linker search path 0034 use rpath when linking programs (USE WITH CARE) 0035 --install-name-dir=DIR Darwin directory name for installed targets 0036 0037 Licensing options: 0038 --enable-gpl allow use of GPL code, the resulting libs 0039 and binaries will be under GPL [no] 0040 --enable-version3 upgrade (L)GPL to version 3 [no] 0041 --enable-nonfree allow use of nonfree code, the resulting libs 0042 and binaries will be unredistributable [no] 0043 0044 Configuration options: 0045 --disable-static do not build static libraries [no] 0046 --enable-shared build shared libraries [no] 0047 --enable-small optimize for size instead of speed 0048 --disable-runtime-cpudetect disable detecting CPU capabilities at runtime (smaller binary) 0049 --enable-gray enable full grayscale support (slower color) 0050 --disable-swscale-alpha disable alpha channel support in swscale 0051 --disable-all disable building components, libraries and programs 0052 --disable-autodetect disable automatically detected external libraries [no] 0053 0054 Program options: 0055 --disable-programs do not build command line programs 0056 --disable-ffmpeg disable ffmpeg build 0057 --disable-ffplay disable ffplay build 0058 --disable-ffprobe disable ffprobe build 0059 0060 Documentation options: 0061 --disable-doc do not build documentation 0062 --disable-htmlpages do not build HTML documentation pages 0063 --disable-manpages do not build man documentation pages 0064 --disable-podpages do not build POD documentation pages 0065 --disable-txtpages do not build text documentation pages 0066 0067 Component options: 0068 --disable-avdevice disable libavdevice build 0069 --disable-avcodec disable libavcodec build 0070 --disable-avformat disable libavformat build 0071 --disable-swresample disable libswresample build 0072 --disable-swscale disable libswscale build 0073 --disable-postproc disable libpostproc build 0074 --disable-avfilter disable libavfilter build 0075 --enable-avresample enable libavresample build (deprecated) [no] 0076 --disable-pthreads disable pthreads [autodetect] 0077 --disable-w32threads disable Win32 threads [autodetect] 0078 --disable-os2threads disable OS/2 threads [autodetect] 0079 --disable-network disable network support [no] 0080 --disable-dct disable DCT code 0081 --disable-dwt disable DWT code 0082 --disable-error-resilience disable error resilience code 0083 --disable-lsp disable LSP code 0084 --disable-lzo disable LZO decoder code 0085 --disable-mdct disable MDCT code 0086 --disable-rdft disable RDFT code 0087 --disable-fft disable FFT code 0088 --disable-faan disable floating point AAN (I)DCT code 0089 --disable-pixelutils disable pixel utils in libavutil 0090 0091 Individual component options: 0092 --disable-everything disable all components listed below 0093 --disable-encoder=NAME disable encoder NAME 0094 --enable-encoder=NAME enable encoder NAME 0095 --disable-encoders disable all encoders 0096 --disable-decoder=NAME disable decoder NAME 0097 --enable-decoder=NAME enable decoder NAME 0098 --disable-decoders disable all decoders 0099 --disable-hwaccel=NAME disable hwaccel NAME 0100 --enable-hwaccel=NAME enable hwaccel NAME 0101 --disable-hwaccels disable all hwaccels 0102 --disable-muxer=NAME disable muxer NAME 0103 --enable-muxer=NAME enable muxer NAME 0104 --disable-muxers disable all muxers 0105 --disable-demuxer=NAME disable demuxer NAME 0106 --enable-demuxer=NAME enable demuxer NAME 0107 --disable-demuxers disable all demuxers 0108 --enable-parser=NAME enable parser NAME 0109 --disable-parser=NAME disable parser NAME 0110 --disable-parsers disable all parsers 0111 --enable-bsf=NAME enable bitstream filter NAME 0112 --disable-bsf=NAME disable bitstream filter NAME 0113 --disable-bsfs disable all bitstream filters 0114 --enable-protocol=NAME enable protocol NAME 0115 --disable-protocol=NAME disable protocol NAME 0116 --disable-protocols disable all protocols 0117 --enable-indev=NAME enable input device NAME 0118 --disable-indev=NAME disable input device NAME 0119 --disable-indevs disable input devices 0120 --enable-outdev=NAME enable output device NAME 0121 --disable-outdev=NAME disable output device NAME 0122 --disable-outdevs disable output devices 0123 --disable-devices disable all devices 0124 --enable-filter=NAME enable filter NAME 0125 --disable-filter=NAME disable filter NAME 0126 --disable-filters disable all filters 0127 0128 External library support: 0129 0130 Using any of the following switches will allow FFmpeg to link to the 0131 corresponding external library. All the components depending on that library 0132 will become enabled, if all their other dependencies are met and they are not 0133 explicitly disabled. E.g. --enable-libopus will enable linking to 0134 libopus and allow the libopus encoder to be built, unless it is 0135 specifically disabled with --disable-encoder=libopus. 0136 0137 Note that only the system libraries are auto-detected. All the other external 0138 libraries must be explicitly enabled. 0139 0140 Also note that the following help text describes the purpose of the libraries 0141 themselves, not all their features will necessarily be usable by FFmpeg. 0142 0143 --disable-alsa disable ALSA support [autodetect] 0144 --disable-appkit disable Apple AppKit framework [autodetect] 0145 --disable-avfoundation disable Apple AVFoundation framework [autodetect] 0146 --enable-avisynth enable reading of AviSynth script files [no] 0147 --disable-bzlib disable bzlib [autodetect] 0148 --disable-coreimage disable Apple CoreImage framework [autodetect] 0149 --enable-chromaprint enable audio fingerprinting with chromaprint [no] 0150 --enable-frei0r enable frei0r video filtering [no] 0151 --enable-gcrypt enable gcrypt, needed for rtmp(t)e support 0152 if openssl, librtmp or gmp is not used [no] 0153 --enable-gmp enable gmp, needed for rtmp(t)e support 0154 if openssl or librtmp is not used [no] 0155 --enable-gnutls enable gnutls, needed for https support 0156 if openssl, libtls or mbedtls is not used [no] 0157 --disable-iconv disable iconv [autodetect] 0158 --enable-jni enable JNI support [no] 0159 --enable-ladspa enable LADSPA audio filtering [no] 0160 --enable-libaom enable AV1 video encoding/decoding via libaom [no] 0161 --enable-libaribb24 enable ARIB text and caption decoding via libaribb24 [no] 0162 --enable-libass enable libass subtitles rendering, 0163 needed for subtitles and ass filter [no] 0164 --enable-libbluray enable BluRay reading using libbluray [no] 0165 --enable-libbs2b enable bs2b DSP library [no] 0166 --enable-libcaca enable textual display using libcaca [no] 0167 --enable-libcelt enable CELT decoding via libcelt [no] 0168 --enable-libcdio enable audio CD grabbing with libcdio [no] 0169 --enable-libcodec2 enable codec2 en/decoding using libcodec2 [no] 0170 --enable-libdav1d enable AV1 decoding via libdav1d [no] 0171 --enable-libdavs2 enable AVS2 decoding via libdavs2 [no] 0172 --enable-libdc1394 enable IIDC-1394 grabbing using libdc1394 0173 and libraw1394 [no] 0174 --enable-libfdk-aac enable AAC de/encoding via libfdk-aac [no] 0175 --enable-libflite enable flite (voice synthesis) support via libflite [no] 0176 --enable-libfontconfig enable libfontconfig, useful for drawtext filter [no] 0177 --enable-libfreetype enable libfreetype, needed for drawtext filter [no] 0178 --enable-libfribidi enable libfribidi, improves drawtext filter [no] 0179 --enable-libglslang enable GLSL->SPIRV compilation via libglslang [no] 0180 --enable-libgme enable Game Music Emu via libgme [no] 0181 --enable-libgsm enable GSM de/encoding via libgsm [no] 0182 --enable-libiec61883 enable iec61883 via libiec61883 [no] 0183 --enable-libilbc enable iLBC de/encoding via libilbc [no] 0184 --enable-libjack enable JACK audio sound server [no] 0185 --enable-libklvanc enable Kernel Labs VANC processing [no] 0186 --enable-libkvazaar enable HEVC encoding via libkvazaar [no] 0187 --enable-liblensfun enable lensfun lens correction [no] 0188 --enable-libmodplug enable ModPlug via libmodplug [no] 0189 --enable-libmp3lame enable MP3 encoding via libmp3lame [no] 0190 --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no] 0191 --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no] 0192 --enable-libopencv enable video filtering via libopencv [no] 0193 --enable-libopenh264 enable H.264 encoding via OpenH264 [no] 0194 --enable-libopenjpeg enable JPEG 2000 de/encoding via OpenJPEG [no] 0195 --enable-libopenmpt enable decoding tracked files via libopenmpt [no] 0196 --enable-libopenvino enable OpenVINO as a DNN module backend 0197 for DNN based filters like dnn_processing [no] 0198 --enable-libopus enable Opus de/encoding via libopus [no] 0199 --enable-libpulse enable Pulseaudio input via libpulse [no] 0200 --enable-librabbitmq enable RabbitMQ library [no] 0201 --enable-librav1e enable AV1 encoding via rav1e [no] 0202 --enable-librist enable RIST via librist [no] 0203 --enable-librsvg enable SVG rasterization via librsvg [no] 0204 --enable-librubberband enable rubberband needed for rubberband filter [no] 0205 --enable-librtmp enable RTMP[E] support via librtmp [no] 0206 --enable-libshine enable fixed-point MP3 encoding via libshine [no] 0207 --enable-libsmbclient enable Samba protocol via libsmbclient [no] 0208 --enable-libsnappy enable Snappy compression, needed for hap encoding [no] 0209 --enable-libsoxr enable Include libsoxr resampling [no] 0210 --enable-libspeex enable Speex de/encoding via libspeex [no] 0211 --enable-libsrt enable Haivision SRT protocol via libsrt [no] 0212 --enable-libssh enable SFTP protocol via libssh [no] 0213 --enable-libsvtav1 enable AV1 encoding via SVT [no] 0214 --enable-libtensorflow enable TensorFlow as a DNN module backend 0215 for DNN based filters like sr [no] 0216 --enable-libtesseract enable Tesseract, needed for ocr filter [no] 0217 --enable-libtheora enable Theora encoding via libtheora [no] 0218 --enable-libtls enable LibreSSL (via libtls), needed for https support 0219 if openssl, gnutls or mbedtls is not used [no] 0220 --enable-libtwolame enable MP2 encoding via libtwolame [no] 0221 --enable-libuavs3d enable AVS3 decoding via libuavs3d [no] 0222 --enable-libv4l2 enable libv4l2/v4l-utils [no] 0223 --enable-libvidstab enable video stabilization using vid.stab [no] 0224 --enable-libvmaf enable vmaf filter via libvmaf [no] 0225 --enable-libvo-amrwbenc enable AMR-WB encoding via libvo-amrwbenc [no] 0226 --enable-libvorbis enable Vorbis en/decoding via libvorbis, 0227 native implementation exists [no] 0228 --enable-libvpx enable VP8 and VP9 de/encoding via libvpx [no] 0229 --enable-libwebp enable WebP encoding via libwebp [no] 0230 --enable-libx264 enable H.264 encoding via x264 [no] 0231 --enable-libx265 enable HEVC encoding via x265 [no] 0232 --enable-libxavs enable AVS encoding via xavs [no] 0233 --enable-libxavs2 enable AVS2 encoding via xavs2 [no] 0234 --enable-libxcb enable X11 grabbing using XCB [autodetect] 0235 --enable-libxcb-shm enable X11 grabbing shm communication [autodetect] 0236 --enable-libxcb-xfixes enable X11 grabbing mouse rendering [autodetect] 0237 --enable-libxcb-shape enable X11 grabbing shape rendering [autodetect] 0238 --enable-libxvid enable Xvid encoding via xvidcore, 0239 native MPEG-4/Xvid encoder exists [no] 0240 --enable-libxml2 enable XML parsing using the C library libxml2, needed 0241 for dash demuxing support [no] 0242 --enable-libzimg enable z.lib, needed for zscale filter [no] 0243 --enable-libzmq enable message passing via libzmq [no] 0244 --enable-libzvbi enable teletext support via libzvbi [no] 0245 --enable-lv2 enable LV2 audio filtering [no] 0246 --disable-lzma disable lzma [autodetect] 0247 --enable-decklink enable Blackmagic DeckLink I/O support [no] 0248 --enable-mbedtls enable mbedTLS, needed for https support 0249 if openssl, gnutls or libtls is not used [no] 0250 --enable-mediacodec enable Android MediaCodec support [no] 0251 --enable-mediafoundation enable encoding via MediaFoundation [auto] 0252 --enable-libmysofa enable libmysofa, needed for sofalizer filter [no] 0253 --enable-openal enable OpenAL 1.1 capture support [no] 0254 --enable-opencl enable OpenCL processing [no] 0255 --enable-opengl enable OpenGL rendering [no] 0256 --enable-openssl enable openssl, needed for https support 0257 if gnutls, libtls or mbedtls is not used [no] 0258 --enable-pocketsphinx enable PocketSphinx, needed for asr filter [no] 0259 --disable-sndio disable sndio support [autodetect] 0260 --disable-schannel disable SChannel SSP, needed for TLS support on 0261 Windows if openssl and gnutls are not used [autodetect] 0262 --disable-sdl2 disable sdl2 [autodetect] 0263 --disable-securetransport disable Secure Transport, needed for TLS support 0264 on OSX if openssl and gnutls are not used [autodetect] 0265 --enable-vapoursynth enable VapourSynth demuxer [no] 0266 --enable-vulkan enable Vulkan code [no] 0267 --disable-xlib disable xlib [autodetect] 0268 --disable-zlib disable zlib [autodetect] 0269 0270 The following libraries provide various hardware acceleration features: 0271 --disable-amf disable AMF video encoding code [autodetect] 0272 --disable-audiotoolbox disable Apple AudioToolbox code [autodetect] 0273 --enable-cuda-nvcc enable Nvidia CUDA compiler [no] 0274 --disable-cuda-llvm disable CUDA compilation using clang [autodetect] 0275 --disable-cuvid disable Nvidia CUVID support [autodetect] 0276 --disable-d3d11va disable Microsoft Direct3D 11 video acceleration code [autodetect] 0277 --disable-dxva2 disable Microsoft DirectX 9 video acceleration code [autodetect] 0278 --disable-ffnvcodec disable dynamically linked Nvidia code [autodetect] 0279 --enable-libdrm enable DRM code (Linux) [no] 0280 --enable-libmfx enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no] 0281 --enable-libnpp enable Nvidia Performance Primitives-based code [no] 0282 --enable-mmal enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no] 0283 --disable-nvdec disable Nvidia video decoding acceleration (via hwaccel) [autodetect] 0284 --disable-nvenc disable Nvidia video encoding code [autodetect] 0285 --enable-omx enable OpenMAX IL code [no] 0286 --enable-omx-rpi enable OpenMAX IL code for Raspberry Pi [no] 0287 --enable-rkmpp enable Rockchip Media Process Platform code [no] 0288 --disable-v4l2-m2m disable V4L2 mem2mem code [autodetect] 0289 --disable-vaapi disable Video Acceleration API (mainly Unix/Intel) code [autodetect] 0290 --disable-vdpau disable Nvidia Video Decode and Presentation API for Unix code [autodetect] 0291 --disable-videotoolbox disable VideoToolbox code [autodetect] 0292 0293 Toolchain options: 0294 --arch=ARCH select architecture [] 0295 --cpu=CPU select the minimum required CPU (affects 0296 instruction selection, may crash on older CPUs) 0297 --cross-prefix=PREFIX use PREFIX for compilation tools [] 0298 --progs-suffix=SUFFIX program name suffix [] 0299 --enable-cross-compile assume a cross-compiler is used 0300 --sysroot=PATH root of cross-build tree 0301 --sysinclude=PATH location of cross-build system headers 0302 --target-os=OS compiler targets OS [] 0303 --target-exec=CMD command to run executables on target 0304 --target-path=DIR path to view of build directory on target 0305 --target-samples=DIR path to samples directory on target 0306 --tempprefix=PATH force fixed dir/prefix instead of mktemp for checks 0307 --toolchain=NAME set tool defaults according to NAME 0308 (gcc-asan, clang-asan, gcc-msan, clang-msan, 0309 gcc-tsan, clang-tsan, gcc-usan, clang-usan, 0310 valgrind-massif, valgrind-memcheck, 0311 msvc, icl, gcov, llvm-cov, hardened) 0312 --nm=NM use nm tool NM [nm -g] 0313 --ar=AR use archive tool AR [ar] 0314 --as=AS use assembler AS [] 0315 --ln_s=LN_S use symbolic link tool LN_S [ln -s -f] 0316 --strip=STRIP use strip tool STRIP [strip] 0317 --windres=WINDRES use windows resource compiler WINDRES [windres] 0318 --x86asmexe=EXE use nasm-compatible assembler EXE [nasm] 0319 --cc=CC use C compiler CC [gcc] 0320 --cxx=CXX use C compiler CXX [g++] 0321 --objcc=OCC use ObjC compiler OCC [gcc] 0322 --dep-cc=DEPCC use dependency generator DEPCC [gcc] 0323 --nvcc=NVCC use Nvidia CUDA compiler NVCC or clang [] 0324 --ld=LD use linker LD [] 0325 --pkg-config=PKGCONFIG use pkg-config tool PKGCONFIG [pkg-config] 0326 --pkg-config-flags=FLAGS pass additional flags to pkgconf [] 0327 --ranlib=RANLIB use ranlib RANLIB [ranlib] 0328 --doxygen=DOXYGEN use DOXYGEN to generate API doc [doxygen] 0329 --host-cc=HOSTCC use host C compiler HOSTCC 0330 --host-cflags=HCFLAGS use HCFLAGS when compiling for host 0331 --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host 0332 --host-ld=HOSTLD use host linker HOSTLD 0333 --host-ldflags=HLDFLAGS use HLDFLAGS when linking for host 0334 --host-extralibs=HLIBS use libs HLIBS when linking for host 0335 --host-os=OS compiler host OS [] 0336 --extra-cflags=ECFLAGS add ECFLAGS to CFLAGS [] 0337 --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [] 0338 --extra-objcflags=FLAGS add FLAGS to OBJCFLAGS [] 0339 --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [] 0340 --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [] 0341 --extra-ldsoflags=ELDFLAGS add ELDFLAGS to LDSOFLAGS [] 0342 --extra-libs=ELIBS add ELIBS [] 0343 --extra-version=STRING version string suffix [] 0344 --optflags=OPTFLAGS override optimization-related compiler flags 0345 --nvccflags=NVCCFLAGS override nvcc flags [] 0346 --build-suffix=SUFFIX library name suffix [] 0347 --enable-pic build position-independent code 0348 --enable-thumb compile for Thumb instruction set 0349 --enable-lto use link-time optimization 0350 --env="ENV=override" override the environment variables 0351 0352 Advanced options (experts only): 0353 --malloc-prefix=PREFIX prefix malloc and related names with PREFIX 0354 --custom-allocator=NAME use a supported custom allocator 0355 --disable-symver disable symbol versioning 0356 --enable-hardcoded-tables use hardcoded tables instead of runtime generation 0357 --disable-safe-bitstream-reader 0358 disable buffer boundary checking in bitreaders 0359 (faster, but may crash) 0360 --sws-max-filter-size=N the max filter size swscale uses [256] 0361 0362 Optimization options (experts only): 0363 --disable-asm disable all assembly optimizations 0364 --disable-altivec disable AltiVec optimizations 0365 --disable-vsx disable VSX optimizations 0366 --disable-power8 disable POWER8 optimizations 0367 --disable-amd3dnow disable 3DNow! optimizations 0368 --disable-amd3dnowext disable 3DNow! extended optimizations 0369 --disable-mmx disable MMX optimizations 0370 --disable-mmxext disable MMXEXT optimizations 0371 --disable-sse disable SSE optimizations 0372 --disable-sse2 disable SSE2 optimizations 0373 --disable-sse3 disable SSE3 optimizations 0374 --disable-ssse3 disable SSSE3 optimizations 0375 --disable-sse4 disable SSE4 optimizations 0376 --disable-sse42 disable SSE4.2 optimizations 0377 --disable-avx disable AVX optimizations 0378 --disable-xop disable XOP optimizations 0379 --disable-fma3 disable FMA3 optimizations 0380 --disable-fma4 disable FMA4 optimizations 0381 --disable-avx2 disable AVX2 optimizations 0382 --disable-avx512 disable AVX-512 optimizations 0383 --disable-aesni disable AESNI optimizations 0384 --disable-armv5te disable armv5te optimizations 0385 --disable-armv6 disable armv6 optimizations 0386 --disable-armv6t2 disable armv6t2 optimizations 0387 --disable-vfp disable VFP optimizations 0388 --disable-neon disable NEON optimizations 0389 --disable-inline-asm disable use of inline assembly 0390 --disable-x86asm disable use of standalone x86 assembly 0391 --disable-mipsdsp disable MIPS DSP ASE R1 optimizations 0392 --disable-mipsdspr2 disable MIPS DSP ASE R2 optimizations 0393 --disable-msa disable MSA optimizations 0394 --disable-msa2 disable MSA2 optimizations 0395 --disable-mipsfpu disable floating point MIPS optimizations 0396 --disable-mmi disable Loongson SIMD optimizations 0397 --disable-fast-unaligned consider unaligned accesses slow 0398 0399 Developer options (useful when working on FFmpeg itself): 0400 --disable-debug disable debugging symbols 0401 --enable-debug=LEVEL set the debug level [] 0402 --disable-optimizations disable compiler optimizations 0403 --enable-extra-warnings enable more compiler warnings 0404 --disable-stripping disable stripping of executables and shared libraries 0405 --assert-level=level 0(default), 1 or 2, amount of assertion testing, 0406 2 causes a slowdown at runtime. 0407 --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data 0408 --valgrind=VALGRIND run "make fate" tests through valgrind to detect memory 0409 leaks and errors, using the specified valgrind binary. 0410 Cannot be combined with --target-exec 0411 --enable-ftrapv Trap arithmetic overflows 0412 --samples=PATH location of test samples for FATE, if not set use 0413 $FATE_SAMPLES at make invocation time. 0414 --enable-neon-clobber-test check NEON registers for clobbering (should be 0415 used only for debugging purposes) 0416 --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only; 0417 should be used only for debugging purposes) 0418 --enable-random randomly enable/disable components 0419 --disable-random 0420 --enable-random=LIST randomly enable/disable specific components or 0421 --disable-random=LIST component groups. LIST is a comma-separated list 0422 of NAME[:PROB] entries where NAME is a component 0423 (group) and PROB the probability associated with 0424 NAME (default 0.5). 0425 --random-seed=VALUE seed value for --enable/disable-random 0426 --disable-valgrind-backtrace do not print a backtrace under Valgrind 0427 (only applies to --disable-optimizations builds) 0428 --enable-ossfuzz Enable building fuzzer tool 0429 --libfuzzer=PATH path to libfuzzer 0430 --ignore-tests=TESTS comma-separated list (without "fate-" prefix 0431 in the name) of tests whose result is ignored 0432 --enable-linux-perf enable Linux Performance Monitor API 0433 --disable-large-tests disable tests that use a large amount of memory 0434 0435 NOTE: Object files are built at the place where configure is launched.