build: Use more compiler warnings
authorWerner Koch <wk@gnupg.org>
Tue, 13 Sep 2016 18:41:16 +0000 (20:41 +0200)
committerWerner Koch <wk@gnupg.org>
Tue, 13 Sep 2016 18:41:16 +0000 (20:41 +0200)
commit0510591c36591816a6ff3f87a04451001b7ed46f
treea76961c0f5912d80652dff98af00389c32a4b790
parent00c501d296da287bec2fd6a0e3912abfbde90a98
build: Use more compiler warnings

* configure.ac: Add useful compiler warnings.
--

It is strange that this seems to be the only GnuPG package which does
not use modern warning.

Signed-off-by: Werner Koch <wk@gnupg.org>
configure.ac