2008-11-17 Simon Josefsson <simon@josefsson.org>
+ * m4/warnings.m4: Improve code. Reported by Ralf Wildenhues
+ <Ralf.Wildenhues@gmx.de> and Paolo Bonzini <bonzini@gnu.org>.
+
+2008-11-17 Simon Josefsson <simon@josefsson.org>
+
* m4/warnings.m4: Use CPPFLAGS to really check whether the
parameter works.