Solaris 10 shipped with an old gcc, probably version 3.7.2, under /usr/sfw/bin. My project required to be built by gcc >=4.3 to be compiled successfully. Therefore, I installed a pre-compiled gcc 3.4.6 from [sunfreeware.com|sunfreeware.com] and successfully compiled latest version (2.23.1) of GNU binutils. Also I could successfully build GMP, MPC, MPFR libraries required as a pre-requisite to compile gcc. But, I get the error message as follows: (Last few lines of several KBs of 'make' log) /home/Dip/Workspace/gcc-build/./gcc/xgcc -B/home/Dip/Workspace/gcc-build/./gcc/ -B/usr/local/sparc-sun-solaris2.10/bin/ -B/usr/local/sparc-sun-solaris2.10/lib/ -isystem /usr/local/sparc-sun-solaris2.10/include -isystem /usr/local/sparc-sun-solaris2.10/sys-include -g -O2 -m64 -O2 -g -O2 -DIN_GCC -W -Wall -Wwrite-strings -Wcast-qual -Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition -isystem ./include -fPIC -g -DIN_LIBGCC2 -fbuilding-libgcc -fno-stack-protector -fPIC -I. -I. -I../../.././gcc -I../../../../gcc-4.7.2/libgcc -I../../../../gcc-4.7.2/libgcc/. -I../../../../gcc-4.7.2/libgcc/../gcc -I../../../../gcc-4.7.2/libgcc/../include -DHAVE_CC_TLS -o _ctors.o -MT _ctors.o -MD -MP -MF _ctors.dep -DL_ctors -c ../../../../gcc-4.7.2/libgcc/libgcc2.c -fvisibility=hidden -DHIDE_EXPORTS /home/Dip/Workspace/gcc-build/./gcc/xgcc -B/home/Dip/Workspace/gcc-build/./gcc/ -B/usr/local/sparc-sun-solaris2.10/bin/ -B/usr/local/sparc-sun-solaris2.10/lib/ -isystem /usr/local/sparc-sun-solaris2.10/include -isystem /usr/local/sparc-sun-solaris2.10/sys-include -g -O2 -m64 -O2 -g -O2 -DIN_GCC -W -Wall -Wwrite-strings -Wcast-qual -Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition -isystem ./include -fPIC -g -DIN_LIBGCC2 -fbuilding-libgcc -fno-stack-protector -fPIC -I. -I. -I../../.././gcc -I../../../../gcc-4.7.2/libgcc -I../../../../gcc-4.7.2/libgcc/. -I../../../../gcc-4.7.2/libgcc/../gcc -I../../../../gcc-4.7.2/libgcc/../include -DHAVE_CC_TLS -o _ffssi2.o -MT _ffssi2.o -MD -MP -MF _ffssi2.dep -DL_ffssi2 -c ../../../../gcc-4.7.2/libgcc/libgcc2.c -fvisibility=hidden -DHIDE_EXPORTS /var/tmp//ccT2zOsO.s: Assembler messages: /var/tmp//ccT2zOsO.s:636: Error: unknown pseudo-op: `.group' *make[5]: *** [_ffssi2.o] Error 1* make[5]: Leaving directory `/home/Dip/Workspace/gcc-build/sparc-sun-solaris2.10/sparcv9/libgcc' *make[4]: *** [multi-do] Error 1* make[4]: Leaving directory `/home/Dip/Workspace/gcc-build/sparc-sun-solaris2.10/libgcc' *make[3]: *** [all-multi] Error 2* make[3]: Leaving directory `/home/Dip/Workspace/gcc-build/sparc-sun-solaris2.10/libgcc' *make[2]: *** [all-stage1-target-libgcc] Error 2* make[2]: Leaving directory `/home/Dip/Workspace/gcc-build' *make[1]: *** [stage1-bubble] Error 2* make[1]: Leaving directory `/home/Dip/Workspace/gcc-build' *make: *** [all] Error 2* Does that ring any bell? Has anyone been able to build gcc >=4.3 from source under Solaris 10 successfully? Please suggest. My project urgently needs it, but all the activities are stalled. -- Thanks & Regards, Dipanjan