Hello. I found the macro definition for _syscall?() are not found in /usr/include/asm/unistd.h for Fedora Core 6 environment. The definitions are found in /usr/src/kernels/2.6.18-1.2798.fc6-i686/include/asm/unistd.h which belongs to kernel-devel package, but are not found in /usr/include/asm/unistd.h which (I think) belongs to glibc-kernelheaders package. What should I do? Regards. -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/