Dear All: I wrote a very small program as following : #include <kernel/fs.h> #include <sys/types.h> int main () { ; // contains no C programs, } and give the command " cc -D__KERNEL__ -I/usr/src/linux/include to compiler the program . A lot of parser error messages show on the screen . Does anybody know why ? - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/