`configure' configures this package to adapt to many kinds of systems. Usage: ./configure [OPTION]... [VAR=VALUE]... To assign environment variables (e.g., CC, CFLAGS...), specify them as VAR=VALUE. See below for descriptions of some of the useful variables. Defaults for the options are specified in brackets. Configuration: -h, --help display this help and exit --help=short display options specific to this package --help=recursive display the short help of all the included packages -V, --version display version information and exit -q, --quiet, --silent do not print `checking ...' messages --cache-file=FILE cache test results in FILE [disabled] -C, --config-cache alias for `--cache-file=config.cache' -n, --no-create do not create output files --srcdir=DIR find the sources in DIR [configure dir or `..'] Installation directories: --prefix=PREFIX install architecture-independent files in PREFIX [/usr/local] --exec-prefix=EPREFIX install architecture-dependent files in EPREFIX [PREFIX] By default, `make install' will install all the files in `/usr/local/bin', `/usr/local/lib' etc. You can specify an installation prefix other than `/usr/local' using `--prefix', for instance `--prefix=$HOME'. For better control, use the options below. Fine tuning of the installation directories: --bindir=DIR user executables [EPREFIX/bin] --sbindir=DIR system admin executables [EPREFIX/sbin] --libexecdir=DIR program executables [EPREFIX/libexec] --sysconfdir=DIR read-only single-machine data [PREFIX/etc] --sharedstatedir=DIR modifiable architecture-independent data [PREFIX/com] --localstatedir=DIR modifiable single-machine data [PREFIX/var] --libdir=DIR object code libraries [EPREFIX/lib] --includedir=DIR C header files [PREFIX/include] --oldincludedir=DIR C header files for non-gcc [/usr/include] --datarootdir=DIR read-only arch.-independent data root [PREFIX/share] --datadir=DIR read-only architecture-independent data [DATAROOTDIR] --infodir=DIR info documentation [DATAROOTDIR/info] --localedir=DIR locale-dependent data [DATAROOTDIR/locale] --mandir=DIR man documentation [DATAROOTDIR/man] --docdir=DIR documentation root [DATAROOTDIR/doc/PACKAGE] --htmldir=DIR html documentation [DOCDIR] --dvidir=DIR dvi documentation [DOCDIR] --pdfdir=DIR pdf documentation [DOCDIR] --psdir=DIR ps documentation [DOCDIR] Program names: --program-prefix=PREFIX prepend PREFIX to installed program names --program-suffix=SUFFIX append SUFFIX to installed program names --program-transform-name=PROGRAM run sed PROGRAM on installed program names System types: --build=BUILD configure for building on BUILD [guessed] --host=HOST cross-compile to build programs to run on HOST [BUILD] --target=TARGET configure for building compilers for TARGET [HOST] Optional Features: --disable-option-checking ignore unrecognized --enable/--with options --disable-FEATURE do not include FEATURE (same as --enable-FEATURE=no) --enable-FEATURE[=ARG] include FEATURE [ARG=yes] --enable-as-accelerator-for=ARG build as offload target compiler. Specify offload host triple by ARG --enable-offload-targets=LIST enable offloading to devices from comma-separated LIST of TARGET[=DIR]. Use optional path to find offload target compiler during the build --enable-gold[=ARG] build gold [ARG={default,yes,no}] --enable-ld[=ARG] build ld [ARG={default,yes,no}] --enable-compressed-debug-sections={all,gas,gold,ld,none} Enable compressed debug sections for gas, gold or ld by default --disable-libquadmath do not build libquadmath directory --disable-libquadmath-support disable libquadmath support for Fortran --enable-libada build libada directory --enable-libssp build libssp directory --disable-libstdcxx do not build libstdc++-v3 directory --enable-liboffloadmic=ARG build liboffloadmic [ARG={no,host,target}] --enable-bootstrap enable bootstrapping [yes if native build] --disable-isl-version-check disable check for isl version --enable-lto enable link time optimization support --enable-linker-plugin-configure-flags=FLAGS additional flags for configuring linker plugins [none] --enable-linker-plugin-flags=FLAGS additional flags for configuring and building linker plugins [none] --enable-host-shared build host code as shared libraries --enable-stage1-languages[=all] choose additional languages to build during stage1. Mostly useful for compiler development --enable-objc-gc enable use of Boehm's garbage collector with the GNU Objective-C runtime --enable-vtable-verify Enable vtable verification feature --enable-serial-[{host,target,build}-]configure force sequential configuration of sub-packages for the host, target or build machine, or all sub-packages --enable-maintainer-mode enable make rules and dependencies not useful (and sometimes confusing) to the casual installer --enable-stage1-checking[=all] choose additional checking for stage1 of the compiler --enable-werror enable -Werror in bootstrap stage2 and later Optional Packages: --with-PACKAGE[=ARG] use PACKAGE [ARG=yes] --without-PACKAGE do not use PACKAGE (same as --with-PACKAGE=no) --with-build-libsubdir=DIR Directory where to find libraries for build system --with-system-zlib use installed libz --with-mpc=PATH specify prefix directory for installed MPC package. Equivalent to --with-mpc-include=PATH/include plus --with-mpc-lib=PATH/lib --with-mpc-include=PATH specify directory for installed MPC include files --with-mpc-lib=PATH specify directory for the installed MPC library --with-mpfr-dir=PATH this option has been REMOVED --with-mpfr=PATH specify prefix directory for installed MPFR package. Equivalent to --with-mpfr-include=PATH/include plus --with-mpfr-lib=PATH/lib --with-mpfr-include=PATH specify directory for installed MPFR include files --with-mpfr-lib=PATH specify directory for the installed MPFR library --with-gmp-dir=PATH this option has been REMOVED --with-gmp=PATH specify prefix directory for the installed GMP package. Equivalent to --with-gmp-include=PATH/include plus --with-gmp-lib=PATH/lib --with-gmp-include=PATH specify directory for installed GMP include files --with-gmp-lib=PATH specify directory for the installed GMP library --with-stage1-libs=LIBS libraries for stage1 --with-static-standard-libraries use -static-libstdc++ and -static-libgcc (default=auto) --with-stage1-ldflags=FLAGS linker flags for stage1 --with-boot-libs=LIBS libraries for stage2 and later --with-boot-ldflags=FLAGS linker flags for stage2 and later --with-isl=PATH Specify prefix directory for the installed isl package. Equivalent to --with-isl-include=PATH/include plus --with-isl-lib=PATH/lib --with-isl-include=PATH Specify directory for installed isl include files --with-isl-lib=PATH Specify the directory for the installed isl library --with-target-bdw-gc=PATHLIST specify prefix directory for installed bdw-gc package. Equivalent to --with-target-bdw-gc-include=PATH/include plus --with-target-bdw-gc-lib=PATH/lib --with-target-bdw-gc-include=PATHLIST specify directories for installed bdw-gc include files --with-target-bdw-gc-lib=PATHLIST specify directories for installed bdw-gc library --with-gcc-major-version-only use only GCC major number in filesystem paths --with-build-sysroot=SYSROOT use sysroot as the system root during the build --with-debug-prefix-map='A=B C=D ...' map A to B, C to D ... in debug information --with-build-config='NAME NAME2...' use config/NAME.mk build configuration --with-build-time-tools=PATH use given path to find target tools during the build Some influential environment variables: CC C compiler command CFLAGS C compiler flags LDFLAGS linker flags, e.g. -L if you have libraries in a nonstandard directory LIBS libraries to pass to the linker, e.g. -l CPPFLAGS (Objective) C/C++ preprocessor flags, e.g. -I if you have headers in a nonstandard directory CXX C++ compiler command CXXFLAGS C++ compiler flags build_configargs additional configure arguments for build directories host_configargs additional configure arguments for host directories target_configargs additional configure arguments for target directories AR AR for the host AS AS for the host DLLTOOL DLLTOOL for the host LD LD for the host LIPO LIPO for the host NM NM for the host RANLIB RANLIB for the host STRIP STRIP for the host WINDRES WINDRES for the host WINDMC WINDMC for the host OBJCOPY OBJCOPY for the host OBJDUMP OBJDUMP for the host READELF READELF for the host CC_FOR_TARGET CC for the target CXX_FOR_TARGET CXX for the target GCC_FOR_TARGET GCC for the target GFORTRAN_FOR_TARGET GFORTRAN for the target GOC_FOR_TARGET GOC for the target AR_FOR_TARGET AR for the target AS_FOR_TARGET AS for the target DLLTOOL_FOR_TARGET DLLTOOL for the target LD_FOR_TARGET LD for the target LIPO_FOR_TARGET LIPO for the target NM_FOR_TARGET NM for the target OBJCOPY_FOR_TARGET OBJCOPY for the target OBJDUMP_FOR_TARGET OBJDUMP for the target RANLIB_FOR_TARGET RANLIB for the target READELF_FOR_TARGET READELF for the target STRIP_FOR_TARGET STRIP for the target WINDRES_FOR_TARGET WINDRES for the target WINDMC_FOR_TARGET WINDMC for the target Use these variables to override the choices made by `configure' or to help it to find libraries and programs with nonstandard names/locations. 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