> Dont include kernel headers in userspace OR define the needed variables to make your userspace application compile. > > Nice report btw > > /ismail How then do you wrote an application to utilize kernel features? I am working on a real-time operating system (KURT - www.ittc.ku.edu/kurt) and need to include a header that exists in the kernel. The header is installed in the /usr/src/linux/include/linux/ but not in /usr/include/linux. Thanks about the report. I got the idea from a library I help work on called ACE+TAO (www.cs.wustl.edu/~schmidt/ACE.html). Stephen -- Stephen Torri