-xtarget Values on x86 Platforms

Compiling for 64-bit Solaris software on 64-bit x86 platforms is indicated by the -m64 option. If you specify -xtarget with a flag other than native64 or generic64, you must also specify the -m64 option as follows: -xtarget=opteron ... -m64 otherwise the compiler uses a 32-bit memory model.