> But the plan is in the end to compile it on a HP-UX 10.20 system, tehn it > should be runable on HP-UX 11 as well. Then, please go to a 10.20 system. Never use gcc on a system that it is not made for. gcc will do wrong assumptions about header files in /usr/include. It is possible to build a cross compiler, but this is much more complicated than a native compiler... Thomas