This is on an AMD Opteron system running the 64 bit version of RHEL 4.3 (curious that it is identified as "unknown-linux-gnu"). I'm building 4.3.0 with GCC 3.4.5 20051201 (Red Hat 3.4.5-2).
My configure command is ../gcc-4.3.0/configure --with-gmp=/apps/gmp/4.2.2 --with-mpfr=/apps/mpfr/2.3.0 --prefix=/apps/gcc/4.2.2 --enable-languages=c,c++,fortran,java,objc,obj-c++,treelang The configure completes successfully. The error is triggered by make bootstrap The last 20 or so lines of output from make boostrap are: if [ xinfo = xinfo ]; then \ makeinfo --split-size=5000000 --split-size=5000000 --split-size=5000000 --no-split -I ../../gcc-4.3.0/gcc/doc \ -I ../../gcc-4.3.0/gcc/doc/include -o doc/gccinstall.info ../../gcc-4.3.0/gcc/doc/install.texi; \ fi if [ xinfo = xinfo ]; then \ makeinfo --split-size=5000000 --split-size=5000000 --split-size=5000000 --no-split -I . -I ../../gcc-4.3.0/gcc/doc \ -I ../../gcc-4.3.0/gcc/doc/include -o doc/cppinternals.info ../../gcc-4.3.0/gcc/doc/cppinternals.texi; \ fi make[3]: Leaving directory `/scratch/gcc_exe/gcc' mkdir -p -- x86_64-unknown-linux-gnu/libgcc Checking multilib configuration for libgcc... Configuring stage 1 in x86_64-unknown-linux-gnu/libgcc configure: creating cache ./config.cache checking for --enable-version-specific-runtime-libs... no checking for a BSD-compatible install... /usr/bin/install -c checking for gawk... gawk checking build system type... x86_64-unknown-linux-gnu checking host system type... x86_64-unknown-linux-gnu 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... /scratch/gcc_exe/./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... /scratch/gcc_exe/./gcc/xgcc -B/scratch/gcc_exe/./gcc/ -B/apps/gcc/4.2.2/x86_64-unknown-linux-gnu/bin/ -B/apps/gcc/4.2.2/x86_64-unknown-linux-gnu/lib/ -isystem /apps/gcc/4.2.2/x86_64-unknown-linux-gnu/include -isystem /apps/gcc/4.2.2/x86_64-unknown-linux-gnu/sys-include checking for suffix of object files... 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 `/scratch/gcc_exe' make[1]: *** [stage1-bubble] Error 2 make[1]: Leaving directory `/scratch/gcc_exe' make: *** [bootstrap] Error 2 For what it's worth, the identical problem happens on a 64 bit Solaris 9 system. -- Summary: configure: error: cannot compute suffix of object files Product: gcc Version: 4.3.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: bootstrap AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: al dot danial at gmail dot com GCC build triplet: x86_64-unknown-linux-gnu GCC host triplet: x86_64-unknown-linux-gnu GCC target triplet: x86_64-unknown-linux-gnu http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35577