output of ./config.guess: alphaev6-dec-osf4.0f output of gcc -v: Reading specs from /usr/local/lib/gcc-lib/alphaev6-dec-osf4.0f/3.0.4/specs Configured with: ../gcc-3.0.4/configure Thread model: single gcc version 3.0.4 I build it with: make CFLAGS='-O' LIBCFLAGS='-g -O2' LIBCXXFLAGS='-g -O2 -fno-implicit-templates' bootstrap-lean