I've been trying to build GCC 4.2.1 on Solaris 8 for several weeks. The initial guidance I got from Garey Mills, Kai Ruottu, and Dennis Clarke was to pay attention to the "Prerequisites". So my configuration is: GNU make 3.81 Binutils 2.19 Gawk 3.1.5 Gmp 4.3.1 Mpfr 2.3.2 I've used Dennis Clarke's test results as a guideline http://gcc.gnu.org/ml/gcc-testresults/2007-08/msg00318.html I've built with GCC 3.3.2 as well as SunStudio 9. I've built with CONFIG_SHELL set to /bin/bash, /bin/ksh, and bash4.0. My current configure line is: /emc/ctadm/drp/gcc/gcc-4.2.1/configure \ --prefix=/disks/rmdev/tools/solaris8 \ --with-local-prefix=/disks/rmdev/tools/solaris8 \ --with-build-sysroot=/disks/rmdev/tools/sysroots/solaris8 \ --enable-threads \ --enable-languages=c,c++ \ --disable-nls \ --without-gnu-ld \ --with-ld=/usr/ccs/bin/ld \ --without-gnu-as \ --with-as=/usr/ccs/bin/as \ --enable-shared \ --enable-bootstrap \ --with-gmp=/disks/rmdev/tools/solaris8 \ --with-mpfr=/disks/rmdev/tools/solaris8 I have saved several build directories "objdirX" with a full log of the configuration/make where each log file is > 2MB. I have been trying different combinations of compilers, config shells, etc. The build of GCC stop with a failure to build the libstdc++-v3 directory in stage3. The most common errors I see are: