some question about kernel-2.4.20/lib/errno.c
In kernel-2.4.20, there was a file named errno.c in folder lib. And a global variable named errno was defined in this .c file. But in kernel-2.6.27, this file doesn't exist any more.
In my hand, there are some code based on kernel-2.4.20, and the global variable errno is used, so if compile the code in my hand based on kernel-2.6.27, an error is given: no definition of errno. How do I solve this problem?