Hi, I have read about the compute suffix error in the FAQ, but I do have the mpc, mpfr and gmp libraries installed (from sources), so I don't have an idea why I am getting this error, any clues ? Thanks in adance make[3]: Leaving directory `/home/niko/gcc-4.7.4/host-x86_64-unknown-linux-gnu/gcc' Checking multilib configuration for libgcc... Configuring stage 1 in x86_64-unknown-linux-gnu/libgcc configure: loading cache ./config.cache checking build system type... x86_64-unknown-linux-gnu checking host system type... x86_64-unknown-linux-gnu checking for --enable-version-specific-runtime-libs... no checking for a BSD-compatible install... /usr/bin/install -c checking for gawk... gawk checking for x86_64-unknown-linux-gnu-ar... ar checking for x86_64-unknown-linux-gnu-lipo... lipo checking for x86_64-unknown-linux-gnu-nm... /home/niko/gcc-4.7.4/host-x86_64-unknown-linux-gnu/gcc/nm checking for x86_64-unknown-linux-gnu-ranlib... ranlib checking for x86_64-unknown-linux-gnu-strip... strip checking whether ln -s works... yes checking for x86_64-unknown-linux-gnu-gcc... /home/niko/gcc-4.7.4/host-x86_64-unknown-linux-gnu/gcc/xgcc -B/home/niko/gcc-4.7.4/host-x86_64-unknown-linux-gnu/gcc/ -B/usr/gcc474/x86_64-unknown-linux-gnu/bin/ -B/usr/gcc474/x86_64-unknown-linux-gnu/lib/ -isystem /usr/gcc474/x86_64-unknown-linux-gnu/include -isystem /usr/gcc474/x86_64-unknown-linux-gnu/sys-include checking for suffix of object files... configure: error: in `/home/niko/gcc-4.7.4/x86_64-unknown-linux-gnu/libgcc': configure: error: cannot compute suffix of object files: cannot compile See `config.log' for more details. make[2]: *** [configure-stage1-target-libgcc] Error 1 make[2]: Leaving directory `/home/niko/gcc-4.7.4' make[1]: *** [stage1-bubble] Error 2 make[1]: Leaving directory `/home/niko/gcc-4.7.4' make: *** [all] Error 2 -bash-3.2$ tail -50 config.log poststage1_libs='' pplinc='' ppllibs='' prefix='/usr/gcc474' program_transform_name='s,y,y,' psdir='${docdir}' sbindir='${exec_prefix}/sbin' sharedstatedir='${prefix}/com' stage1_cflags='-g -fkeep-inline-functions' stage1_checking='--enable-checking=yes,types' stage1_languages='c,c++,lto' stage1_ldflags='' stage1_libs='' stage2_werror_flag='' sysconfdir='${prefix}/etc' target='x86_64-unknown-linux-gnu' target_alias='' target_configargs='--cache-file=./config.cache --enable-multilib '\''--verbose'\'' '\''--prefix=/usr/gcc474/'\'' '\''--with-gmp=/usr/gmp/'\'' '\''--with-mpfr=/usr/mpfr/'\'' '\''--with-mpc=/usr/mpc/'\'' '\''--enable-languages=c,c++,fortran,java,lto,objc'\'' --program-transform-name='\''s,y,y,'\'' --disable-option-checking' target_configdirs=' libgcc libgomp libitm libstdc++-v3 libmudflap libssp libquadmath libgfortran boehm-gc libffi zlib libjava libobjc' target_cpu='x86_64' target_noncanonical='x86_64-unknown-linux-gnu' target_os='linux-gnu' target_subdir='x86_64-unknown-linux-gnu' target_vendor='unknown' tooldir='${exec_prefix}/x86_64-unknown-linux-gnu' ## ------------------- ## ## File substitutions. ## ## ------------------- ## alphaieee_frag='/dev/null' host_makefile_frag='/dev/null' ospace_frag='/dev/null' serialization_dependencies='serdep.tmp' target_makefile_frag='./config/mt-gnu' ## ----------- ## ## confdefs.h. ## ## ----------- ## /* confdefs.h */ #define PACKAGE_NAME "" #define PACKAGE_TARNAME "" #define PACKAGE_VERSION "" #define PACKAGE_STRING "" #define PACKAGE_BUGREPORT "" #define PACKAGE_URL "" #define LT_OBJDIR ".libs/" configure: exit 0 -bash-3.2$