../gcc-3.3.1/configure --prefix=/sw/gcc/3.3.1 --disable-shared --disable-aix64 --disable-multilib --host=rs6000-ibm-aix5.2.0.0 I would suggest removing --disable-shared --disable-aix64 --disable-multilib --host=rs6000-ibm-aix5.2.0.0 from the configuration line. Are you trying to build the compiler on something other than an AIX 5.2 system? David