util-linux build fails with glibc HEAD

[Andrew Walrond]

Indeed yes, as I'd just discovered. Adding #include <errno.h>
to pivot_root.c fixes the problem

Andries, please apply this trivial fix to util-linux/mount/pivot_root.c

Andrew Walrond

Jeff Bailey wrote:
> 
> Your code probably doesn't #include <errno.h>.  Make sure that it does
> that.  The old glibc used to allow non-standards compliant code to
> compile and work.  Recent glibcs aren't as permissive.  Note that old
> binaries run against the new glibc will fail (either silently or at
> startup time, depending on whether the bug related to that has been
> fixed or not)
> 
> Tks,
> Jeff Bailey
>