gcc 3.2's cpp breaks configure scripts

[Jakub Jelinek]

On Thu, Aug 01, 2002 at 07:03:43AM +0000, Gareth Pearce wrote:
> but only with files which are fixincluded right? (not rhetorical)

This has nothing to do with fixinclude. #include_next is used e.g.
to include gcc's include header of the same name, or by libstdc++-v3
headers to include C headers, etc.
Also, -I/usr/include changes the status of /usr/include headers from
system headers to user headers, thus you may get warnings (or errors
with -Werror) where you otherwise would not get any.

	Jakub