The glibc-kernheaders packages provides 'kernel-headers'. If you need to require a specific _version_, you should use that. But if you just need to require that it exists, you don't need to do anything -- the standard gcc development packages depend on it. If there's a file missing from /usr/include/linux or /usr/include/asm when you try to build, that's either a bug in the glibc-kernheaders package, or a bug in the package you're trying to build. If it's a kernel header you _should_ be using from userspace, assume the former and file a bug against glibc-kernheaders. If the latter, fix it not to include kernel headers. Do _NOT_ add 'BuildRequires: glibc-kernheaders' to any packages. That will break. Soon. -- dwmw2