Don't use -Wno-error=undef

[Joseph Myers]

On Tue, 18 Aug 2015, Mike Frysinger wrote:

> On 18 Aug 2015 16:21, Joseph Myers wrote:
> > This patch, relative to a tree with
> > <https://sourceware.org/ml/libc-alpha/2015-08/msg00680.html> and
> > <https://sourceware.org/ml/libc-alpha/2015-08/msg00681.html> (pending
> > review) applied, removes the use of -Wno-error=undef, so that -Wundef
> > warnings become errors.
> 
> lgtm

Are you saying those patches look good as well as the -Wno-error=undef 
removal?

> > Tested for x86_64 and x86.  If people see build or test errors
> > resulting from this on other architectures, they should fix those as
> > usual.
> 
> is it possible to compile all the tests (and not run them) ?
> i can do a few quick sanity checks for some arches ...

"make check" should do that by default when building with a cross compiler 
(it will also do tests that only require the build system and not the host 
glibc runs on, such as the ABI tests).

-- 
Joseph S. Myers
joseph@codesourcery.com