Hi, The c compiler from HP has a +DA2.0 option to build in 32 bit mode on PA-RISC 2.0 & +DA2.0W to build in 64 bit mode. I am looking for similar options to compile using gcc 3.0 for hp-ux 11i. Are there any? I tried the -mpa-risc-2.0 but that did not help. Thanks Gopi