I'm trying to build xen on an x86_64 sid base and am having problems with include file collisions. I traced the problem to the inclusion of asm/sigcontext.h and bits/sigcontext.h. One of these gets sucked in as an include from signal.h, the other as a result of including asm/elf.h. The same stuff builds on a Redhat RHEL4 distro. thanks, ray