[Buildroot] [PATCH] package/m4: fix build in host with glibc-2.28

[Peter Korsgaard]

>>>>> "Yann" == Yann E MORIN <yann.morin.1998 at free.fr> writes:

 > glibc-2.28 did quite some lifting in their headers, which breaks the
 > way some packages were detecting glibc, like gnulib.

 > However, packages do bundle gnulib (it was meant to be bundled),
 > and so does m4.

:/

Committed, thanks.

-- 
Bye, Peter Korsgaard