Add a temporary workaround to compile with glibc 2.28
as some constants were removed and others made private
Signed-off-by: Luis Araneda <luaraneda@gmail.com>
M4 fails to build against glibc 2.16.x, the shipped stdio.in.h attempts to
wrap gets() with a warning which fails since gets() got removed from the
default _GNU_SOURCE featureset.
SVN-Revision: 32648
